transportation and other high strength pull cord of transportation

Apart from round Electric hydraulic stacker, there are triangular shares, stocks and other flat oval shaped stocks and shares. Compared with round stock, they have a higher intensity, and the drum or pulley rope groove contact performance, long life, but making more complex.
With high-quality carbon steel wire, cold drawing and heat treatment after repeated high strength can be achieved. Wet or outdoor environment in the workplace can be twisted galvanized steel wire rope, in order to enhance rust resistance.
Rope in all industrial countries are standard products, which can use to choose its diameter, number of strands, number of wires per strand, tensile strength and sufficient safety factor, and its specifications are available in the relevant manual Richard. Except the wire rope wear layer, the main deflection pulleys due to repeated Electric hydraulic stacker and roll, and gradually cause metal fatigue fracture, so the rope pulley or reel diameter ratio is an important factor in the decision life rope. The ratio of large, wire bending stress, long life, but a large organization. You must use the occasion to determine the appropriate ratio. Surface layer of wire rope wear, corrosion or broken wires within each twist at the number exceeds the specified value should be scrapped.
Wire rope is mainly used in lifting, transportation and other high strength pull cord of transportation.
Classification
1. Round strand wire rope
2. Braided rope
3. Flat rope
Discard criteria
Excerpt from "lifting wire rope inspection and retirement of practical norms" (GB5972-86) 2.5.1 (latest specification has been revised to GB5972-2006, the following is for reference only, please refer to the latest specification) the nature and quantity of broken wires
The overall design does not allow lifting rope with unlimited long life.
8 shares for the six stocks and wire rope, wire break occurs mainly in appearance. For multi-strand wire rope (typical multi-strand structure) is different, most of which occurred in the broken wire rope inside, so it is "invisible" fracture.
The following table takes into account these factors, therefore, when combined with paragraph 2.5.2 ~ 2.5.11 factors considered together, it is applicable to various structures rope.

High tower crane tire structure

High tower crane tire tire crane substructure is electric stacker the same with the ordinary. The difference is that the former place in the latter mounted jib up the school installed a p-frame is installed into place two hydraulic cylinders pull up the school. Install boom in the middle column. High tower crane tire tire crane substructure is basically the same with the ordinary. The difference is that the former place in the latter mounted jib up the school installed a p-frame is installed into place two hydraulic cylinders pull up the school. Install boom in the middle column. This crane metal structure composed of the following parts.
 1. Trolley frame
 Crane with steel frame with steel welded into a box-shaped (or slab) structure, the travel drive, transmission device mounted on the support frame mounted umbrella holder r6 rotary support, pallet stackers mounted to the frame at the front and rear end beam. Material generally use low-Jin Gaoqiang degree structural steel. Because although the number of products to be certain counterweight could be considered ordinary carbon steel frame.
 2. Turntable
 Crane turntable structure similar to ordinary tires. To install the mounting arm at school legislation, the tail with significant support beams a ship with a high-strength low-alloy structural steel made with good strength and rigidity of the box-shaped structure.
 3. Column
 Mainly from the text column order jib role that requires a certain column height to install compensate pulley. Column one small ship, I asked for the two big large section box structure to ensure good torsion resistance.
 4. Boom
The boom of the crane truss structure, the main square seamless multi-chord vessels with paragraph 2 and pin hinge.

Early 19th century, showing a bridge crane

Chinese ancient irrigation is used orange jib crane prototype.
14th century, Western Europe showed a shift of human and animal-driven boom cranes.
Early 19th century, showing a electric pallet jack crane; crane important wear parts such as shafts, gears and spreader used metal materials such as beginning and start optional hydraulic drives.
Late 19th century, steam-driven hydraulic crane gradually replace the crane driver.
The beginning of the 1920s era, because the electrical industry and the rapid development of the internal combustion engine industry to electric motor or internal combustion engine-powered equipment of all kinds cranes fundamental composition.
Composition layout
Include hand stacker cranes primary organization, functioning organization, luffing organization, reverse tissue and metal layout. Lifting crane organization is a fundamental task organization, mostly by hanging system and winch components, but also through the hydraulic system lifting heavy objects. Organization to operate or adjust the level of vertical migration of heavy crane operating position, is usually caused by motor, speed reducer, brake and wheel components. Luffing jib type organization only equipped in the crane, jib looked up and downs when reduced, bent downs when increasing amplitude of balanced and unbalanced luffing two kinds. Reverse organizations use to make the boom reversed, is supported by the drive device and the reverse devices. The layout is the skeleton of metal crane, the primary carrier such as bridge, boom and mast for box-shaped layout or truss layout, but also for web layouts, and some can be used as a steel support beam.

First half of 2010

First half of 2010, China's four major categories of construction crane sales totaled more than 24,000 units, an increase of 48.9%. In addition to exports, the major economic indicators are close to record levels during the first half of 2008. As of September 2010, China's only truck cranes, truck-mounted cranes and crawler crane sales reached 33,712 units, more than 2009 full-year sales of 345 units 4 categories crane. Construction crane industry once again restored in 2010 a rapid growth momentum.
First half of 2010, exports of construction cranes rebounded, exports amounted to 1,133 units, exports amounted to 1.86 billion yuan, respectively, an increase of 43.6% and 40.0%. Among them, exports of 893 crane units, up 40.5 percent; crawler crane export 171 units, up 141.0 percent; crane export 96 units, down 6.8%.
From the first half of 2010 corporate sales situation, Xu Zhong, Zoomlion, Sany Automobile hand pallet trucks Machinery Co., Ltd. and other four companies Liugong truck cranes sold 17,463 units, accounting for Electric hydraulic stacker cranes 87.15% of total sales, Xu Heavy sales growth biggest year growth rate of 30.5%; Sany Technology, XCMG Construction Machinery, ask dug Heavy and Zoomlion sold crawler cranes 736 units, accounting for this type of product total sales 91.43%, XCMG sales increase maximum , an increase of 115.8%; XU Sui
And total sales of Shijiazhuang Coal Mining Machinery crane 2370, accounting for the types of products 70.04% of total sales, Xu grew 62.4% over year.
Domestic construction crane on the market, cranes (including all terrain crane) is still the industry's leading products. January to September 2010, truck crane sales 27,572 units, up 35.6%; total exports of 879 units, an increase of 62.1%. Which ,3-June for the automotive crane sales season, the average monthly sales of 3,500 units or more, the peak appeared in March, sales reached 4,429 units; January largest growth rate, an increase of 158.3%; while sales in February and September appeared fell. From the product structure, small and medium-tonnage truck crane sales increased. 1344 crawler crane sales units, up 61.93 percent, close to the 2008 record high. Sales of products to 50t, 70t, 80t, 100t, 150t and 250t crawler crane mainly small and medium level. Truck crane half sales 4796 units, up 38.53 percent.

Since China Crane started in the 1970s

Shijiazhuang Coal Mining Machinery Factory is the production arm of the earlier winch truck mounted crane factory. Shanxi Changzhi Qinghua Machinery Factory is a enterprise directly under the Ministry of Aeronautics and Astronautics , early production arm-type truck mounted crane . The plant introduction of the Swedish Xi Yabo (HIAB) company production technology, production of folding arm products, no lifting mechanism , the use of heavy lifting and luffing manner , with European style products . Wuhan electric pallet truck crane truck mounted crane factory is earlier production of the manufacturers whose products are arm -type hoist crane with Dongfeng, liberation and the Yellow automobile accessory , automobile chassis at the rear and the installation of a 10t hydraulic winch , particularly Shop Liftere for electrical department rescue and construction needs. Hunan dedicated car factory was founded in 1950 , the Department of Hunan machinery industry key enterprises, the State Planning Commission, State Economic and Trade Commission and the Ministry of Machinery Industry in the country's only point of the crane truck production base. The main products are crane truck , dump truck , van, tanker truck transportation , installed after compression garbage trucks.

Since China Crane started in the 1970s, relatively late , and the development fast enough, only in recent years have greatly developed and abroad, there is a big gap. Specific features:

The main reason wheeled crane overturned

Wheeled cranes rated capacity, with the night stand elevation (working range) changes of. When lifting heavy objects weighing more than the corresponding amplitudes from the rated lifting weight, wheeled cranes might lose the machine stability, resulting in "roll-over" accident.
Wheeled cranes rated capacity, with the night stand elevation (working range) changes of. When lifting heavy objects weighing more than the corresponding amplitudes from the rated electric pallet trucks weight, wheeled cranes might lose the machine stability, resulting in "roll-over" accident.
         Crane tipping machine produced for many reasons, from a number of data analysis can be grouped into the following categories:
1. Overload operation
2. Check rider pallet truck the job is not strict, there are potential causes omissions
3. Do not fight Wen Wen legs supporting legs or lifting operations in insecure
4. Operating environmental conditions such as lighting, fog, interference
5. Crane improperly parked position
6. Hook (tie hanging) the wrong way
7. Illegal operations and command blind drivers
8. High-speed rotation with load amplitude or severe braking
9. Overload limiter safety device failure
10. Other
  For wheeled cranes, especially depression tire lifting hunger, its center of mass is high, cornering, acceleration is too large, the centrifugal force acting on the crane and a sharp increase in the level of inertial forces, but also lead to a rollover accident one of the major conditions .

Crane Network is a professional industry portal crane

Knowledge: industry portals, broadly refers to an application framework that will various application systems, data resources and Internet resources into an information management platform, and unified user interface to the user, so that enterprises can quickly establishment of counter balance stackers customers, employees and business-to-business internal information channels, enabling enterprises to release stored in a variety of internal and external information.

Crane Network is a professional industry portal crane, industry portals all the features. Cranes network is set cranes, single girder cranes, double girder cranes, gantry cranes, electric hoist, chain hoist, chain hoists, tower cranes, port cranes, reducer, motor, bridge cranes, jib cranes, Electric hydraulic stacker lift, crane, lifting crane automation, information as a whole, the use of advanced network technology as the crane industry to provide a full range, comprehensive, effective and efficient communication platform, and provides the crane industry e-commerce application solutions!

Crane Site Classification
Crane's Internet network at this stage ventures with existing model, mainly divided into operating and non-operating sites are two types of cranes website website?. Operating the crane site generally through sales and marketing tools, business development, in order to participate in the portal provides Internet and e-commerce services. Net non-operating cranes to provide advice and retrieval based, but no particular the distinction between non-operating, but the site as a window, not the mainstream of development of business.

Stacker definition

Stacker (Stacker) is a crane for loading and unloading of small cranes, can enter the cabin, carriages and containers for loading and unloading pallets, handling operations. Is a pallet transport, container transport essential equipment.
Stacker English name Empty electric pallet trucks. Belonging to a crane for rider pallet truck and unloading of small cranes to enter the cabin, carriages and containers for loading and unloading pallets, handling operations. Is a pallet transport, container transport essential equipment.
Stacker definition
Stacker simple structure, flexible operation, fretting resistance, proof security and high performance. For narrow passage and limited space operations, is elevated in warehouses, workshops ideal equipment for loading and unloading of palletized. It can be widely used in petroleum, chemical, pharmaceutical, textile, military, paints, pigments, coal and other industries, as well as ports, railways, garages, warehouses containing explosive mixture, and access to the cabin, cabin cargo pallets and containers within loading and unloading, stacking and handling operations. Can greatly improve efficiency, reduce labor intensity of competition in the market for enterprises to win the opportunity.

Impact of electric forklift market, the most important factor

With the U.S. credit rating downgrade, the international economic turmoil again and again, but China's economic growth but still occur, especially in most of the industrial sectors there has been sustained growth. For example, the manufacture and sale of forklifts. 2008 by the financial crisis, the global economic downturn, China's policy of stimulating domestic demand through government, investment funds, to stimulate the market in 2009, China's electric forklift sales growth rate as high as 62%. 2010, China forklift truck market growth rate reached 68.34%.

Impact of electric forklift market, the most important factor is the rising labor costs, so some factories, storage centers prefer to use electric forklifts to reduce costs, thereby promoting the sale of electric forklift upgrade. As China's manufacturing sector continues to strengthen, mechanization and automation of the process continues to accelerate, rising labor costs, stimulate demand for electric forklifts, prompting the traditional construction machinery manufacturers have begun putting in a lot of effort and resources to the development of electric forklift.

As China's electric electric pallet jack market demand increasing in recent years, more and more foreign companies to enter the Chinese investment and production, and in China have occupied a space. Nonetheless, most of the domestic market is mainly domestic truck manufacturers account. Because domestic brands in the price, quality and service there is a clear advantage. Most important factor is the price factor, but this is not conducive to long-term development of Chinese forklift market. At present, China's diesel forklift occupy the lion's share of the market, but with the food, beverage, materials, retail and the continuous development of railways, electric forklift would have made great progress, with the requirements of environmental protection penetrate hearts, environmental requirements increasingly stringent deepening of urbanization, new energy, industrial vehicles and electric industrial vehicles market will gradually replace the existing market economy.

Great development 2006-2009

In 2006, sales of four categories of construction cranes (truck cranes, crawler cranes, truck-mounted crane and mobile crane) 17,403 units, up 34.1 percent. 2007 sales reached 24,831 units, up 42.68 percent. 2008 Although affected by the financial crisis, China's four major categories of construction crane sales are still growing, almost equal to 28,000 units, up 12.8 percent; sales revenue of 27.27 billion yuan, an increase of 60.2%, total profit of 2.61 billion yuan, an increase of 46%. 2009 policy Air scissor lift's construction crane industry bottomed out gradually from the second half. Annual sales revenue reached 31.13 billion yuan, an increase of 14.2%; total profit reached 200 910 million yuan, an increase of 11.6%; sales of four categories of crane 33,367 units, up 19.2%.
Exports from China's construction crane after 2006 has maintained significant growth, while imports declined. In 2008, China's exports is the highest ever recorded crane, the annual export of various cranes and other construction machinery 5008 units, up 58%; total amount of more than 8.2 billion yuan, an increase of 88%, industry sales accounted for 30 %, exports become an important economic growth point. But the world recession in 2009 exports of construction cranes have a significant negative impact on exports fell significantly throughout the year without signs of recovery. 2009 exports fell by 64.8 percent, exports fell 67%.

Second, the construction boom characteristics

First, according to whether the running gear
Can be divided into mobile and stationary tower crane tower crane.
Mobile tower crane according to different walking devices can be divided into rail, tire, car type, crawler of four. Rail-mounted tower crane tower fixed on the bottom shelf to walk, you can run on a dedicated Hand stacker, good stability, can walk with a load, high efficiency, which is widely used in construction and installation works. Tire, truck mounted and crawler tower crane trackless equipment, easy to move, but you can not walk with a load, poor stability.
Stationary tower crane according to different installation location, is divided into self-elevating and attached inner climbing type two, self-elevating tower crane can be attached to the building with the temperature increased for high-rise buildings, structures only withstand horizontal loads coming from the crane, attached to convenience, but take up more than structural steel; internal climbing tower crane inside the building (elevator shafts, stairwells), using a set of brackets and lifting system for climbing, Scissor lift more burdensome , but take up less structural steel, does not require installation of foundation, all the weight and the load borne by the building bear.

Second, the construction boom characteristics
Can be divided into luffing jib luffing (boom) and trolley boom (flat arm) tower crane.
Luffing jib luffing jib tower crane is lifting unrealized by luffing, and its advantages are: give full play to the effective height of the boom, simple mechanism, the disadvantage is the minimum amplitude is limited to the most significant 30% so, can not completely close the tower, luffing jib together with the load when lifting, can not take the load amplitude.
Trolley jib tower crane is by horizontal boom track mounted Trolley realized range, and its advantages are: amplitude range, the trolley can be approaching the tower, band load amplitude, shortcomings are: boom force situation is complex, demanding for the structure, and the boom and the car must be in the building upper spire roof mounting height of buildings to be higher than 15-20 meters.

Maintenance and repair of tower cranes

Maintenance and repair to ensure the safe and economic use of tower cranes , extending its life , we must do the tower crane maintenance and repair and lubrication work .
Tower crane maintenance
1 , and keep the machine clean , timely cleaning .
2 , check the gearbox oil , timely refueling.
3 , pay attention to check all parts for loose wire , broken wire , and wear phenomena, such as exceeding the relevant regulations must be promptly replaced.
4, check the brake performance , the gap , must ensure a reliable sensitivity.
5, check the reliability of the safety device sensitive .
6 , Pallet stackers the bolt connections, in particular standard tower section connecting bolt , with each period of use , you must re- tighten.
7 , check the wire head plate , clips , etc. are loose , should be tightened.
Wire rope, drum , pulleys, hooks and other scrap , should be strictly enforced GB5144, and GB5972 requirements. 8 , check the metal components of the rods , webs and weld cracks , paying particular attention to the place and location of peeling paint , especially in the paint was peeling a 45 ° diagonal stripes most dangerous and must quickly identify the cause and timely manner .
9 , the tower everywhere ( including basic section of the chassis connection ) connecting bolts and nuts , around the pin connection diameter greater than Φ20 so are dedicated special parts, under any circumstances , is absolutely not allowed to substitute , and tower installation when every one must have two bolt nut .
10 , the standard bolt property class 10.9 , nuts performance rating of 10 ( double nut locking ) , the top surface of the bolt head and the nut head top surface must have a performance rating mark , or will be allowed to be used.
11 , machine and metal bodies after each use of a project should be carried out rust and paint stencilled once .
12, scissor pallet truck the spreader magnification changer device and rope hook retaining device is safe and reliable.
13 , the electrical contacts are observed oxidation or burning, if it is bad to be repaired or replaced.
14 , the limit switches and buttons can not fail, if rusted or damaged parts should be replaced .
15 , the electrical switch, and the switch boards, etc. must be well insulated , the insulation resistance of not less than 0.5MΩ.
16 , check the electrical components of the fastening bolts are loose , cables and other wires is broken , if it should be immediately removed .

Which category has several cranes

The crane is in a range of vertical and horizontal movement of goods hoisting machinery, and the intermittent movement of the crane operation cycle characteristics of the work.
Crane ask:
Which category has several cranes
Answer:
The crane is in a range of vertical and horizontal movement of goods hoisting Manual stacker  and the intermittent movement of the crane operation cycle characteristics of the work. By Application: General cranes, construction cranes, metallurgical cranes, railway cranes, port cranes, shipbuilding cranes, deck cranes. By tectonic Category: bridge type cranes, jib type cranes, rotary crane, non-rotating cranes, stationary cranes, crane operation, operation of cranes and rail and non-rail line. Common Model: electric single and double girder, single girder, double girder gantry, Electric pallet truck, electric single girder suspension, single and double girder grab, explosion-proof single, double girder, metallurgy single, double girder, semi-gantry cranes, manual single beam, suspension, bridge machine, etc.

Under what circumstances crane maximum lifting weight

Members brothers I was engaged in Pallet stackers engineering personnel, will lower the crane lifting weight and arm length and the angle between the horizontal arm and the relationship is how it was. Thank you
Crane ask:
Members brothers I was engaged in bridge engineering personnel, will lower the crane lifting weight and arm length and the angle between the horizontal arm and the relationship is how it was. Thank you
Questions added:
Under what circumstances will the next biggest weight lifting.
Answer:
For electrics tacker crane, in just basic arm (hydraulic telescopic boom fully retracted), 3 m lifting radius (arm to catch the maximum elevation of about 80 degrees depending on the specific model may be), the lifting capacity of the largest can reach the rated maximum lifting capacity, such as 50 tons truck crane can lift 50 tons at this time (may only be in the rear or side loading, can not rotate 360 ​​°). Boom boom elevation elongation or reduction will reduce the lifting capacity of the crane, of course, that is elongated boom while lowering the elevation angle will be greater and reduces the lifting capacity crane. For a 50-ton crane, in a state where all outriggers, not lying on a horizontal state of the crane (heavy afford overturn, etc., may result in an accident).

Ensure cleanliness of hydraulic oil indicators

In the system for disassembly cleaning and replacement filters can effectively remove from the hydraulic fluid solid particles, which is one of the key measures of pollution control. Fluid passing through a good filter to prevent swarf or other large particles stuck causing elements, scratches, clogging and other faults. On the pump inlet, an important component of the inlet filter pump is installed, etc. imaginary cleaned or replaced regularly.
     3. Ensure cleanliness of hydraulic oil indicators
     Hydraulic Hand pallet jacks crane used hydraulic oil should generally be maintained volume, viscosity, total acid as the main test indicators.
     Maintenance, adding crane hydraulic oil hydraulic system shall comply ZBE39002-86 "car tire from the attention and solid particles crane hydraulic oil contamination level" standard, namely: Group particulate contamination level should not exceed 18/ls, cranes used in the process hydraulic oil should not exceed 20/16; moisture limit indicators: total water content of hydraulic oil required should not exceed o. 1%; operating viscosity limit indicators; requirements kinematic viscosity hydraulic oil change should not exceed 10% of the soil; total acid number limit: Requires total acid number should not exceed o. 3m8 (KoH) / 8.
     4. Ensure that the closed nature of the hydraulic system
     Hydraulic truck crane hydraulic system to achieve dustproof and waterproof to keep the system closed, prohibited foreign matter into the hydraulic system.

In order to climb the tower crane workers pay talks

Followed by the local fire brigade, as well as police on duty felt for persuasion, but unfortunately have to get paid the woman would not come down.
August 28, 2013, or in Ju County, Shandong fruit Township a woman, a direct climb up over thirty meters of the tower crane, attracted more than onlookers.
Followed by the local fire Hand pallet jacks as well as police on duty felt for persuasion, but unfortunately have to get paid the woman would not come down.
To prevent accidents, the site owner finally rushed to settle wages, and personally handed workers climbed crane hands. Why did it known today, ladies and bosses have grown a little heart. Hydraulic truck crane used hydraulic oil should generally be maintained volume, viscosity, total acid as the main test indicators.
     Maintenance, adding crane hydraulic oil hydraulic system shall comply ZBE39002-86 "car tire from the attention and solid particles crane hydraulic oil contamination level" standard, namely: Group particulate contamination level should not exceed 18/ls, cranes used in the process hydraulic oil should not exceed 20/16; moisture limit indicators: total water content of hydraulic oil required should not exceed o. 1%; operating viscosity limit indicators; requirements kinematic viscosity hydraulic oil change should not exceed 10% of the soil; total acid number limit: Requires total acid number should not exceed o. 3m8 (KoH) / 8.

Tire crane slewing manipulation

This paper describes the tire as long as the crane slewing maneuvering requirements and considerations

Rotary control
(1) Release the rotating Hand pallet jacks pedal, the handle is turned to the desired position ("left" or "nails">, gradually increasing the rotational speed of the throttle control.
     (2) then the levers in situ, the turntable in a free state
When the rotating part of the crane in the parking brake smoothly.
     (3) rotary manipulation essentials.
     1) can be changed brake by the normally open normally closed, that the brake pedal while stepping on a tooth bit immobile (determining that a braking torque). Experienced drivers can pull the handle to the original position in advance, so that the turntable with inertial stop after a journey through to the desired determine the location, without having to depress the brake pedal again.
     2) Zhao heavy machinery driving, do not move pedal must be trampled to death. Turntable front with anti-rotation device, if necessary, can be locked to ensure driving safety turntable, but had to pull out before the rotary control latch.
     3) To enable a smooth swing operation room will make the crane turntable is level. And should not be rapid rotation. General Requirements: 6t more goods from turning when the maximum lifting rope declination <3. Master lifting 6-3t cargo slewing, lifting rope maximum declination <6 degrees rotation when lifting 3t the following goods, lifting the maximum angle rope <10. .

Author: China Crane News 2013-05-25 09:50

This paper describes the tire as long as the crane slewing maneuvering requirements and considerations

Rotary control
(1) Release the rotating brake pedal, the handle is turned to the desired position ("left" or "nails">, gradually increasing the rotational speed of the throttle control.
     (2) then the levers in situ, the turntable in a free state
When the rotating part of the crane in the parking brake smoothly.
     (3) rotary manipulation essentials.
     1) can be changed brake by the normally open normally closed, that the brake pedal while stepping on a tooth bit immobile (determining that a braking torque). Experienced drivers can pull the handle to the original position in advance, so that the turntable with inertial stop after a journey through to the desired determine the location, without having to depress the brake pedal again.
     2) Zhao heavy machinery driving, do not move pedal must be trampled to death. Turntable front with anti-rotation device, if necessary, can be locked to ensure driving safety turntable, but had to pull out before the rotary control latch.
     3) To enable a smooth swing operation room will make the crane turntable is level. And should not be rapid rotation. General Requirements: 6t more goods from turning when the maximum lifting rope declination <3. Master lifting 6-3t cargo slewing, lifting rope maximum declination <6 degrees rotation when lifting 3t the following goods, lifting the maximum angle rope <10. .

good reliability, high stability KBK light crane components of the system

KBK flexible light combined system including KBK-D monorail crane, KBK-LD single beam, KBK-LS double girder, KBK-LSS telescopic beam, KBK-LM stacker and other various types of lifting equipment, lifting weight of 0.125t -1t adapt to a very wide range, especially for modern production conveyor line, which features are summarized below:
1, good reliability, high stability KBK light crane components of the system are all standard modules can guarantee high-volume, high-quality production, which scissor pallet truck is very reliable; system module is the mainstay of three sizes of rolled profiles, strength, stiffness, light weight, to ensure stability of the system.
2, KBK system adaptable plant each station according to the needs, design and installation flexibility. Transported from the point to multi-point high accuracy, and more automated conveyor line beat, can be freely combined together. The plant can be used for new designs can also be used to modify or extend the old system.
3, easy to install, cost-effective KBK system installation is very convenient. KBK profiles between various standard modules can be used only with bolts, saving factory space and area, thereby reducing energy consumption, improve enterprise efficiency. System can be operated manually or can achieve automatic and semi-automatic operation.

2010, a new high

First half of 2010, China's four major categories of construction crane sales totaled more than 24,000 units, an increase of 48.9%. In addition to exports, the major economic indicators are close to record levels during the first half of 2008. As of September 2010, China's only truck cranes, Electric stacker-mounted cranes and crawler crane sales reached 33,712 units, more than 2009 full-year sales of 345 units 4 categories crane. Construction crane industry once again restored in 2010 a rapid growth momentum.
First half of 2010, exports of construction cranes rebounded, exports amounted to 1,133 units, exports amounted to 1.86 billion yuan, respectively, an increase of 43.6% and 40.0%. Among them, exports of 893 crane units, up 40.5 percent; crawler crane export 171 units, up 141.0 percent; crane export 96 units, down 6.8%.
From the first half of 2010 corporate sales situation, Xu Zhong, Zoomlion, Sany Automobile Lifting Machinery Co., Ltd. and other four companies Liugong truck cranes sold 17,463 units, accounting for truck cranes 87.15% of total sales, Xu Heavy sales growth biggest year growth rate of 30.5%; Sany Technology, XCMG Construction Machinery, ask dug Heavy and Zoomlion sold crawler cranes 736 units, accounting for this type of product total sales 91.43%, XCMG sales increase maximum , an increase of 115.8%; XU Sui
And total sales of Shijiazhuang Coal Mining Machinery crane 2370, accounting for the types of products 70.04% of total sales, Xu grew 62.4% over year.
Domestic construction crane on the market, cranes (including all terrain crane) is still the industry's leading products. January to September 2010, truck crane sales 27,572 units, up 35.6%; total exports of 879 units, an increase of 62.1%. Which ,3-June for the automotive crane sales season, the average monthly sales of 3,500 units or more, the peak appeared in March, sales reached 4,429 units;

Terex acquired 50% equity interest from long; 2008, Liugong

Product sales in the domestic construction cranes, truck cranes have been dominant. However, sales data 2006-2009, truck crane market share began to decline from 2007 to 80% in 2009 to 79.5%. With the development of economic construction, transportation, energy, metallurgy, petroleum, chemical, municipal and other areas of production equipment needs of the crane diversified trend, greatly stimulated the crane, crawler cranes and other product development. In 2008, the market share of these two models, respectively, reached the highest value of 16.5% and 5.9%.
Product sales in the domestic construction cranes, truck cranes have been dominant. However, sales data 2006-2009, truck crane market share began to decline from 2007 to 80% in 2009 to 79.5%. With the development of economic construction, transportation, energy, metallurgy, petroleum, chemical, municipal and other areas of production equipment needs of the crane diversified trend, greatly stimulated the crane, crawler cranes and other product development. In 2008, the market share of these two models, respectively, reached the highest value of 16.5% and 5.9%.
Tonnage continuously improve product is nearly three years of construction cranes in a major trend, crawler crane is one of the fastest growing types of aircraft. In 2003, sales of crawler crane market is just hundred sets, and products are mainly small and medium-tonnage. Into the "Eleventh Five-Year", the large-scale integration lifting mode become the development direction of large tonnage crawler cranes rapid increase in demand, China's leading enterprises have started construction crane develop large-tonnage products. Beginning in 2009, Zoomlion, Sany, XCMG Fuwa Heavy Industry and launched a kiloton crawler cranes. Currently, XCMG crawler crane 2000t level has also been unveiled, Zoomlion 3200t design and development is underway. Large tonnage crawler cranes, it not only makes our country to rid itself of this type of product is completely dependent on imports of the scissor pallet truck, but also fully demonstrates the technological level of domestic production and manufacturing capacity.
Construction crane industry industrial restructuring in the enterprise development strategy deepening. In 2006, Terex acquired 50% equity interest from long; 2008, Liugong acquisition Bengbu Vibro Engineering Machinery Co., Ltd. Jinzhou Huayuan Fuwa Heavy Machinery M & Co., Ltd., a joint venture Manitowoc Dongyue Heavy Industries and etc., are the development of the enterprise and a significant impact on the industry, and are fully reflected in 2009. In 2009, Anhui Liugong sales revenue grew 72.7%, cranes sales grew 62%; ask dug Heavy brocade truck crane 297 units sold, an increase of 234%; Hoisting Machinery Co., Ltd. Sany Automobile sales jumped cars Crane's first three production enterprises; Jingcheng Heavy Recovery truck crane machine production, when it achieved sales of 83 units of the good results. 2009, XCMG and Zoomlion Mobile Crane Branch 2 industry profits accounted for 95.5% of total profits.s of construction cranes in a major trend, crawler crane is one of the fastest growing types of aircraft. In 2003, sales of crawler crane market is just hundred sets, and products are mainly small and medium-tonnage. Into the "Eleventh Five-Year", the large-scale integration lifting mode become the development direction of large tonnage crawler cranes rapid increase in demand, China's leading enterprises have started construction crane develop large-tonnage products. Beginning in 2009, Zoomlion, Sany, XCMG Fuwa Heavy Industry and launched a kiloton crawler cranes. Currently, XCMG crawler crane 2000t level has also been unveiled, Zoomlion 3200t design and development is underway. Large tonnage crawler cranes, it not only makes our country to rid itself of this type of product is completely dependent on imports of the situation, but also fully demonstrates the technological level of domestic production and manufacturing capacity.
Construction crane industry industrial restructuring in the enterprise development strategy deepening. In 2006, Terex acquired 50% equity interest from long; 2008, Liugong acquisition Bengbu Vibro Engineering Machinery Co., Ltd. Jinzhou Huayuan Fuwa Heavy Machinery M & Co., Ltd., a joint venture Manitowoc Dongyue Heavy Industries and etc., are the development of the enterprise and a significant impact on the industry, and are fully reflected in 2009. In 2009, Anhui Liugong sales revenue grew 72.7%, cranes sales grew 62%; ask dug Heavy brocade truck crane 297 units sold, an increase of 234%; Hoisting Machinery Co., Ltd. Sany Automobile sales jumped cars Crane's first three production enterprises; Jingcheng Heavy Recovery truck crane machine production, when it achieved sales of 83 units of the good results. 2009, XCMG and Zoomlion Mobile Crane Branch 2 industry profits accounted for 95.5% of total profits.

Gantry crane Zhidongshiling failure analysis

Rotate work, Zhidongshiling disintegration of rotating worm gear box can be found in the limit torque limiter does not reach its design slip resistance moment when the malfunction.
(1) Analysis: actual operation starts rotating gantry crane, the brake is very frequent, so that the friction torque limiter plate and the worm gear sets often produce relative movement between the cone and wear, rubbing up and down along the worm taper gradually move closer to the plate. Put the worm, the next junction of cone angle, and its diameter is less than the friction disc small end diameter, and thus in the worm was inside the cone grind annular boss, when pressed by the pressing force electric stacker by the spring on the conical surface and the annular projection plane two parts together to bear. When the annular projection plane withstand clamping force dominates, due to the short arm boss plane rotation and the friction surface is small, so that the friction torque is reduced, and less than the original design moment occurs when these failures.
(2) exclusion method: the disintegration of the rotating worm gear box, remove the worm, the worm within the annular projection on the cone car to make the worm gear sets at the intersection of two cone is a transitional cylindrical surface, and the cylindrical surface small end diameter slightly larger than the diameter of the friction plate.

tnhe annual output value of 200 million yua

The main production "Lang too" brand series of lifting products. Companies registered capital of 100 million, the existing staff more than 800 people, college degree or above 110 people, with the title of senior engineer 40 people, the new plant production area of ??500,000 square meters, construction area of ??200,000 square meters, tnhe annual output value of 200 million yua, is the Central Plains region producing explosion-proof cranes, explosion-proof electric hoist, explosion-proof motor, explosion-proof electrical most complete varieties, the largest production and sales enterprises.
Design and manufacturing company "Lang too" brand of Scissor lift equipment and explosion-proof motors, explosion-proof electrical appliances, has achieved national issued a "national industrial production permit," national explosion-proof electrical products quality Wheeled cranes including truck cranes and all terrain cranes, are packed in ordinary or special all-terrain vehicle chassis chassis of a crane, the advantage of mobility, transfers quickly. Chassis performance is equivalent to the total weight of the same vehicle truck, road vehicles comply with the technical requirements, which can be on the road in all kinds of passage. Generally available, and get off two control rooms, operation outstretched legs remain stable. For garages, docks, construction sites and other places of various types of hoist operations, is the largest output, the most widely used type of crane. XCMG wheeled cranes comprehensive industry-leading performance indicators, currently has eight tons to 1,200 tons full range of products. Truck crane sales have been first in the world for eight consecutive years, in 2010 all terrain crane XCMG QAY500 won the China Machinery Industry Science and Technology Progress Award.

Pallet truck - Standard

The system is equipped with a number of hydraulic Electric pallet truck; international CE safety standards Valves
First, the pressure relief valve: When the load exceeds the set maximum hydraulic system can help the oil output of the bypass flow back into the tank.
Second, the compensation control valve: pressure and flow changes via the control valve automatically granted with the rate of decline in order to protect the body, and cargo safety.
※ Low Bed 65m / m, and bed pads conform sided mechanical handling operations, and another double wheel design to overcome high loads and uneven ground dedicated and strong acid, water wheels of rust MC.Harbin -2011 - excavator pallet truck
Harbin Engineering Machinery 20110 blue diesel vehicles can not pull 45-150 own mini excavator pallet truck, farm tractor, front and twin air brake, height 65-75 cm, the upper and lower flexible

he amount of pollution from the type of hydraulic system

Contamination of the hydraulic system Scissor lift sail technology classification of sources can generally be divided into the following three types.

The amount of pollution from the type of hydraulic system
     Contamination of the hydraulic system lifting sail technology classification of sources can generally be divided into the following three types. Namely;
     1. Assembly pollutants
     2. Intrusionproblem pollutants
  3. Generates pollutants
   In Hand Pallet Truck truck crane manufacturing, assembly and commissioning process, the hydraulic system is the main pollutant assembly contaminants. Cranes used in the process, pollutants are mainly generated intrusionproblem pollutants and contaminants. These pollutants and mainly solid particles such as iron, sand, ash umbrella, as well as fiber, film, welding slag, dark film, air. In the crane commissioning process, there intrusionproblem contaminants. Hydraulic system during commissioning solid particle size distribution as shown in Table 2-8. Testing method, g an optical microscope or a manual counting method.

Air hazards

    Hydraulic system of the hydraulic crane assembly and repair process, because the air in the hydraulic system hazards lack of knowledge , not fully exhaust the air from the inside into the hydraulic system , especially when a large volume of air into the cylinder , the crane lifting operation , the cylinder will emit a sharp noise , excessive vibration , or sometimes can be seen creeping phenomenon . Crawling is an scissor pallet truck harmful fault performance .
    A lot of air into the hydraulic system when the truck crane braking at high speeds condition , crane booms because of inertia sprang serious affect driving safety , leading to hook fixtures crack and damage , collision damage pulleys , etc. accidents. Channeling arm hydraulic truck cranes, which are almost always used telescopic circuit shown in Figure 2-15 jib telescopic mechanism hydraulic circuit . Boom cylinder rod chamber together with the system loop piping directly connected , A -side pressure is zero . In the no-load driving conditions , the cylinder rod chamber is usually free of oil, filled with air , if the loop is not immersed in the Hand pallet jacks tubing parked in channeling arms prone to the phenomenon . When the cylinders are filled with oil oil chamber , you can avoid the phenomenon of channeling arms .

imaginary cleaned or replaced regularly

  In the system for disassembly cleaning and replacement filters can effectively remove from the hydraulic fluid solid particles, which is one of the key measures of pollution control. Fluid passing through a good filter to prevent swarf or other large particles stuck causing elements, scratches, clogging and other faults. On the pump inlet, an important component of the inlet filter pump is installed, etc. imaginary cleaned or replaced regularly.
     3. Ensure cleanliness of hydraulic oil indicators
     Hand Pallet Truck crane used hydraulic oil should generally be maintained volume, viscosity, total acid as the main test indicators.
     Maintenance, adding crane hydraulic oil hydraulic system shall comply ZBE39002-86 "car tire from the attention and solid particles crane hydraulic oil contamination level" standard, namely: Group particulate contamination level should not exceed 18/ls, cranes used in the process hydraulic oil should not exceed 20/16; moisture limit indicators: total water content of hydraulic oil required should not exceed o. 1%; operating viscosity limit indicators; requirements kinematic viscosity hydraulic oil change should not exceed 10% of the soil; total acid number limit: Requires total acid number should not exceed o. 3m8 (KoH) / 8.
     4. Ensure that the closed nature of the hydraulic system
     Hydraulic truck crane hydraulic system to achieve dustproof and waterproof to keep the system closed, prohibited foreign material from entering the hydraulic system

affecting their life support device failure will frequently generated

(A) Installation
     (1) Truck Crane slewing bearing (unit) clean. Prior to installation, carefully cleaned down to the mounting surface, the cleaning liquid can not enter inside the raceway.
     (2) Cranes and ask to be transferred bearing surface is machined. Slewing ring mating surface with the upper and lower ends of the circumferential surface of the whole range of requirements to achieve good bonding area above criteria.
     (3) slewing ring mounting Hand stacker with the mounting holes on the bottom ledge concentric ensure accuracy. Otherwise bearing easily deformed, affecting their life support device failure will frequently generated.
     (4) the installation of slewing bolt length not less than 5d (d - bolt thread nominal size). If blind hole, then tighten the screws in the installation should not touch the bottom of the hole.
     (5) to prevent the bolt head and the nut is pressed stains material below, must pay attention to the compressive strength of the mounting surface.
     (6) the required number must be used to provide specifications of the tensile bolts.
     (7) of the bolt head and nut lower surface pressure dispersion, preferably using quenched flat washers.
     (8) bolts, threaded parts, the head, nuts and trapped between the pad friction surface must drip a little oil.
     (9) bolt preload must reach 70% of the material yield limit.
     (10) may not be used under any circumstances spring washers.
     (11) All nozzles shall be installed in an easily accessible area, and should be added to the required amount of lubrication sufficient punishment.

Slewing crane installation

(A) Installation
     (1) Truck Crane slewing bearing (unit) clean. Prior to installation, carefully cleaned down to the mounting surface, the cleaning liquid can not enter inside the raceway.
     (2) Cranes and ask to be transferred bearing surface is machined. Slewing ring Manual stacker surface with the upper and lower ends of the circumferential surface of the whole range of requirements to achieve good bonding area above criteria.
     (3) scissor pallet truck mounting holes with the mounting holes on the bottom ledge concentric ensure accuracy. Otherwise bearing easily deformed, affecting their life support device failure will frequently generated.
     (4) the installation of slewing bolt length not less than 5d (d - bolt thread nominal size). If blind hole, then tighten the screws in the installation should not touch the bottom of the hole.
     (5) to prevent the bolt head and the nut is pressed stains material below, must pay attention to the compressive strength of the mounting surface.
     (6) the required number must be used to provide specifications of the tensile bolts.
     (7) of the bolt head and nut lower surface pressure dispersion, preferably using quenched flat washers.
     (8) bolts, threaded parts, the head, nuts and trapped between the pad friction surface must drip a little oil.
     (9) bolt preload must reach 70% of the material yield limit.
     (10) may not be used under any circumstances spring washers.
     (11) All nozzles shall be installed in an easily accessible area, and should be added to the required amount of lubrication sufficient punishment.

Used truck crane slewing ring

This paper focuses on the slewing crane use and precautions
(A) in accordance with the operating conditions of slewing. Select slick interval. General ball bearing. Each operation loo hour lubrication 1
Times; supporting the column, every 500 hours of operation lubrication 1; at high temperatures and dusty environment of continuous work truck cranes, harsh environmental conditions appropriate for the level should be reduced lubrication interval.
     (2) grease to seal or reduce friction and reduce wear and anti-corrosion effect. To add a little supplemental lubricant oils, such as labyrinth seals, grease should be made over rob from the labyrinth structure overflows.
     (3) must be evenly distributed fat, grease relubrication poise, to actuate the crane slewing mechanism so slow rotation.
     (4) cleaning crane, to prevent steam or other fluids into the channel.
     (5) truck crane for a long time after the closure, the need for slewing slick.
   (6) scissor pallet truck crane work after a period of time, you need to turn the text Order bolts (screws) Retighten to the specified
Torque values. Interval a gel as three months. If the load is relatively heavy, inspection intervals should be shortened.

Wheeled crane safety technology

If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results.

  Crane various powered palle ttruck in the actual production can be fully played, depending on the actual use are reasonable. If resorted to improper maintenance, heavy machinery wheeled Zhao difficult to be effective, will exacerbate the wear and cranes sail affecting life, and even cause accidents. If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results. This section focuses on the use of mobile cranes described in security technology.
  (A) the operator
     Crane operators should be subject to strict Luo theoretical training expertise and practical technical training, proficiency in vehicle driving and crane operators two technologies. Not only to master the crane structure, working principle and technical performance, and should be read in various cooked Random technical documents, such as brochures, manuals performance, operation and maintenance manuals and safe use of rules, but also memorize the various provisions in the operation signals master - · some basic knowledge and skills.
     (Two) safe working environment conditions
     Cranes at work due to bad weather, Scissor lift as high winds, thunderstorms, big men, etc., should stop work; prohibited in a landslide hazard venue working near transmission lines; at night or in the operator's view is obstructed operating conditions, there must be reliable measures, and must be directed with the job; complex field operations in terms of personnel, generally set Starsky signs and safety fence, or by hand, as the security guard on duty.

Wheeled crane safety technology

If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results.

  Crane various powered palle ttruck in the actual production can be fully played, depending on the actual use are reasonable. If resorted to improper maintenance, heavy machinery wheeled Zhao difficult to be effective, will exacerbate the wear and cranes sail affecting life, and even cause accidents. If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results. This section focuses on the use of mobile cranes described in security technology.
  (A) the operator
     Crane operators should be subject to strict Luo theoretical training expertise and practical technical training, proficiency in vehicle driving and crane operators two technologies. Not only to master the crane structure, working principle and technical performance, and should be read in various cooked Random technical documents, such as brochures, manuals performance, operation and maintenance manuals and safe use of rules, but also memorize the various provisions in the operation signals master - · some basic knowledge and skills.
     (Two) safe working environment conditions
     Cranes at work due to bad weather, such as high winds, thunderstorms, big men, etc., should stop work; prohibited in a landslide hazard venue working near transmission lines; at night or in the operator's view is obstructed operating conditions, there must be reliable measures, and must be directed with the job; complex field operations in terms of personnel, generally set Starsky signs and safety fence, or by hand, as the security guard on duty.

Wheeled crane safety technology

If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results.

  Crane various powered palle ttruck in the actual production can be fully played, depending on the actual use are reasonable. If resorted to improper maintenance, heavy machinery wheeled Zhao difficult to be effective, will exacerbate the wear and cranes sail affecting life, and even cause accidents. If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results. This section focuses on the use of mobile cranes described in security technology.
  (A) the operator
     Crane operators should be subject to strict Luo theoretical training expertise and practical technical training, proficiency in vehicle driving and crane operators two technologies. Not only to master the crane structure, working principle and technical performance, and should be read in various cooked Random technical documents, such as brochures, manuals performance, operation and maintenance manuals and safe use of rules, but also memorize the various provisions in the operation signals master - · some basic knowledge and skills.
     (Two) safe working environment conditions
     Cranes at work due to bad weather, Scissor lift as high winds, thunderstorms, big men, etc., should stop work; prohibited in a landslide hazard venue working near transmission lines; at night or in the operator's view is obstructed operating conditions, there must be reliable measures, and must be directed with the job; complex field operations in terms of personnel, generally set Starsky signs and safety fence, or by hand, as the security guard on duty.

Wheeled crane safety technology

If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results.

  Crane various powered palle ttruck in the actual production can be fully played, depending on the actual use are reasonable. If resorted to improper maintenance, heavy machinery wheeled Zhao difficult to be effective, will exacerbate the wear and cranes sail affecting life, and even cause accidents. If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results. This section focuses on the use of mobile cranes described in security technology.
  (A) the operator
     Crane operators should be subject to strict Luo theoretical training expertise and practical technical training, proficiency in vehicle driving and crane operators two technologies. Not only to master the crane structure, working principle and technical performance, and should be read in various cooked Random technical documents, such as brochures, manuals performance, operation and maintenance manuals and safe use of rules, but also memorize the various provisions in the operation signals master - · some basic knowledge and skills.
     (Two) safe working environment conditions
     Cranes at work due to bad weather, Scissor lift as high winds, thunderstorms, big men, etc., should stop work; prohibited in a landslide hazard venue working near transmission lines; at night or in the operator's view is obstructed operating conditions, there must be reliable measures, and must be directed with the job; complex field operations in terms of personnel, generally set Starsky signs and safety fence, or by hand, as the security guard on duty.

Wheeled crane driving requirements

Wheeled cranes have adequate time is in the running state, must comply with all the requirements of driving, in addition to addition, you should note the following:
 Wheeled cranes have adequate time is in the running state, must comply with all the requirements of driving, in addition to addition, you should note the following:
 1. Boom shrink storage
For telescopic boom structure. Before driving the crane jib paragraphs should be fully retracted, folded jib. For terror frame arm, then enclose shelter pure Electric pallet truck section removed, leaving only the basic arm. The boom and hook block placed in the design position, and then turn off mechanism barium barium live, to recover the text legs, finally disengaging the clutch hydraulic fritters.
 2. Road conditions
 Driving Directions PS meaning of boom head turning radius and through bridges, culverts restrictions. Through the narrow bridge, should someone ground command. Rough terrain cranes in off-road forklift jacks, you should pay attention to the machine through the parameters, such as approach angle, departure angle, the minimum ground clearance, maximum through corners, such as the ability to adapt Max.gradeability For road conditions through the floor. It should also be appropriate to reduce the tire pressure to meet the requirements of ground pressure.

Wheeled cranes have adequate time is in the running state

Wheeled crane driving requirements
Author: China Crane News 2013-07-30 13:52

Wheeled cranes Hand pallet jacks adequate time is in the running state, must comply with all the requirements of driving, in addition to addition, you should note the following:

     Wheeled cranes have adequate time is in the running state, must comply with all the requirements of driving, in addition to addition, you should note the following:
     1. Boom shrink storage
For telescopic boom structure. Before driving the crane jib paragraphs should be fully retracted, folded jib. For terror frame arm, then enclose shelter pure intermediate section removed, leaving only the basic arm. The boom and hook block placed in the design position, and then turn off mechanism barium barium live, to recover the text legs, finally disengaging the clutch forklift jacks fritters.
     2. Road conditions
     Driving Directions PS meaning of boom head turning radius and through bridges, culverts restrictions. Through the narrow bridge, should someone ground command. Rough terrain cranes in off-road driving, you should pay attention to the machine through the parameters, such as approach angle, departure angle, the minimum ground clearance, maximum through corners, such as the ability to adapt Max.gradeability For road conditions through the floor. It should also be appropriate to reduce the tire pressure to meet the requirements of ground pressure.
     3. Traveling hoists
     Wheeled crane hoists with generally allows only cares tanks, solid, non-gradient venue. Before operating the tire pressure reaches a predetermined value, off axis and the longitudinal axis of the boom should be in the same vertical plane, rotating platform and swing bridge should be locked. Lifting weights from the weight should not exceed a predetermined value corresponding conditions, speed of not more than 5km / h.

Bridge crane classification

Bridge crane bridge crane can be divided into ordinary, simple beam bridge crane bridge crane and metallurgical dedicated three. Aka crane, driving.
General overhead cranes generally lifting trolley bridge operating agencies, bridge metal structures. Lifting trolley and the hoisting mechanism, trolley run institutions and small frame of three parts.
Lifting mechanism includes a motor, brake, reducer, drum and pulley. Motor through reducer, driving drum rotation, so that the wire rope around the drum or from a roll down to lift Scissor lift loads. Small frame and mounting bracket is lifting mechanism and trolley run institutions and other parts of the rack, usually welded structure.
Crane drive mechanism can be divided into two categories: one for the central drive, which uses an electric motor to drive long shaft-driven initiatives on both sides of the wheel; another is separately driven, that is active on both sides of each wheel with a Hand pallet jacks motor. Medium and small bridge cranes more use brakes, gear units and motors combined into one "triple play" drive mode, a large common bridge crane lifting weight for ease of installation and adjustment, universal coupling drive device often used .
Crane agencies generally only four driving and driven wheels, if the starting weight is large, common approaches to reduce the wheel increases wheel pressure. When more than four wheels, a frame must be balanced hinge device, the crane load is evenly distributed on each wheel.
The metal structure of the bridge from the main beam and side beams, divided into single girder and double girder bridge bridge categories. Single girder bridge by a single span girders and located on both sides of the end beam composed of two dual-beam bridge girders and by the end beam components.

Crane-related data

Bridge crane is Hengjia in workshops, warehouses and empty field for material lifting material lifting equipment. Because of its ends located in the tall concrete pillars or metal bracket, shaped like a bridge.
Chinese Name: Bridge Crane
English name: bridge crane; overhead crane
Other names: crane
Definition: walking along the track structure having a bridge crane.
Applied science: Water Science & Technology (a subject); hydraulic engineering (two subjects); Construction Machinery (Water) (two subjects)
Bridge crane is Hengjia in workshops, warehouses and empty field for material lifting material lifting electrics tacker. Because of its ends located in the tall concrete pillars or metal bracket, shaped like a bridge. Overhead crane overhead bridge along the laying of tracks on both sides longitudinally running, you can take advantage of the space under the bridge lifting material from ground equipment obstacles. It is the most widely used, the largest number of a lifting machinery.
Bridge crane structure
Bridge crane Manual stacker by carts, trolleys and upgrade structures. ?
Overhead crane applications
Bridge crane is a modern industrial production and lifting and transport in the production process of mechanization and automation of the important tools and equipment. So overhead crane and mining enterprises in the interior and exterior, steel chemical, railway transportation, port and logistics flow and other departments and have been widely used sites

the rolling direction of the steel sheet must be located, and the hook piece not joined

6, the longitudinal axis of plate hook sheet, the rolling direction of the steel sheet must be located, and the hook piece not joined.
7, plate hook countersunk head rivet sheet application, while on-board crane hook lifting objects with high stress point contact with the bent portion shall rivet connections.
8, the board allowed between laminations hook welded closed, allowing only intermittent welding.
9, overload test has been conducted on the hook should be discarded.
Edit this paragraph a safety inspection, human-powered lifting mechanism with hooks to 1.5 times the rated load as a proof load test.
2, the power-driven lifting mechanism with hooks to two times the rated load as a test load test.
3, after the load hook lifted electrics tacker, there should be no obvious defects and deformation of the opening degree of the increase in the amount of not more than 0.25% of the original size.
4, inspection hook, the Hand pallet jacks should be marking the low stress areas, including the nominal weight, factory standard or the trade name, inspection mark, production number and so on.
Edit this paragraph hook scrapped when one of the following conditions should be scrapped:
① crack;
② dangerous section wear up to 10% of the original size;
③ opening degree increased by 15% compared with the original size;
④ hook body torsion 超过 10 °;
⑤ hook dangerous section or plastically deformed hook neck;
⑥ hook thread corrosion;
⑦ piece hook bushing wear up to 50% of the original size, replace the bushing;
⑧ piece mandrel wear hook up to 5% of the original size, you should replace the mandrel.

railways, ports , etc., should be strictly hook factory inspection

Hook a very wide classification , generally include: shackles, rings , ring, pear ring , long rings, composite rings, S hook , nose hook, American hook claw hook , eye slip Hand pallet jacks-shaped , with the insurance card rings screws , chain shackle, are unique, innovative , high quality, safe , suitable for factories, mines , petroleum, chemical and marine terminals . Ensure safety, quality and safety factor , static load up to 3 times . Capacity from 5 tons to 150 tons.
Edit this paragraph technical requirements 1 , the purchase of the hook should be the manufacturer's certificate and other technical documents before use ; important sector procurement hook as : railways, ports , etc., should be strictly hook factory inspection ( testing ) . Claw hook
2, the hook may not affect the safe use of Manual stacker deficiencies ; hook welding defects shall ; hook surfaces should be smooth, without cracks , folding , acute angle , burr, peeling and splitting , over-burning and other defects.
3, the shortest distance from the opening of the hook proper position selected print easy to wear two signs, the sign of the distance measured as the degree of opening is used to detect changes in the basis .
4, the hook material can be selected 20 high-quality carbon steel or special materials hook DG20Mn, DG34CrMo other forged steel, prohibited the use of cast hook . Plate hook material is generally applied A3, C3 ordinary carbon steel, low alloy steel or 16Mn
5 , homemade hook should meet the technical conditions GB 10051.1-88 ~ GB 10051.5-88 provisions

Introduction crane hook

Lifting of the most common type of spreader . Often by means of pulley hook hanging in other parts of the rope on the hoisting mechanism .
Brief introduction
Name hook lifting hook.
Scissor lift of the most common type of spreader . Often by means of pulley hook hanging in other parts of the rope on the hoisting mechanism .
Divided according to the shape hook single hook and double hook ; according to manufacturing methods are divided into forging hook and laminated hook .
Single hook is simple to manufacture , easy to use , but the force is not good, mostly used in lifting capacity of 80 tons in the workplace ; lifting force is often used large symmetrical double hook . Laminated hook from a few pieces riveted steel plates cut to shape , the individual sheets when the cracks will not destroy the entire hook , security is good, but larger self , mostly used in large lifting or hoisting steel ladles the crane. Hook by the impact of the job process often requires the use of toughness, good quality carbon steel.
Hand pallet jacks a very wide classification , generally include: shackles, rings , ring, pear ring , long rings, composite rings, S hook , nose hook, American hook claw hook , eye slip hook-shaped , with the insurance card rings screws , chain shackle, are unique, innovative , high quality, safe , suitable for factories, mines , petroleum, chemical and marine terminals . Ensure safety, quality and safety factor , static load up to 3 times . Capacity from 5 tons to 150 tons.
Edit this paragraph technical requirements 1 , the purchase of the hook should be the manufacturer's certificate and other technical documents before use ; important sector procurement hook as : railways, ports , etc., should be strictly hook factory inspection ( testing ) . Claw hook

Maintenance

(1) spreader during use, such as the emergence spin lock rotation is not flexible or not in place, you should check and adjust the adjusting nut, and then check the following parts: ① pawl tension spring is damaged, such damage should be replaced; ② whether there catching transmission mechanism, such as catching, is poor lubrication, you should drive the activities of the junction filling oil (or grease). In the case of the guide pin too tight, should be appropriately adjusting nut. In the case of loose connections, transmission pipes or other rod deformation should be corrected; ③ whether the amount of buffer spring tension is too small, if too small, you should shorten the length of rope connected to the buffer spring. (2) should be used to prevent the spreader instruction marks the dashboard paint off. Once found, the need for timely identification of paint complement the original instructions. (3) for lifting the rope, to be timely cleaned and coated with oil or grease, electrics tacker wire bend. (4) For the main force component, rings, spin locks, lug plate and rigging shackle clearance in normal use conditions, at least once every three months checks, without cracks and serious distortion. (5) All oil cup, oil cup including a ratchet mechanism, sliding seat bearing oil cup and spin lock box oil cup, the main activity should be based on the use of junction timely filling oil. (6) Always check Shengka is loose, the buffer spring is overstretched, identify problems and timely treatment. (7) Each spreader shall not exceed the rated capacity, buffer spring nor overstretched. (8) lifting the lifting process should be smooth to avoid lifting equipment and cranes or other occurrence mutual impact and deformation.

Electric Stacker Overview

Electric Stacker motor-driven, battery-energy an industrial handling vehicles, refers to a piece pallets for loading and unloading cargo, forklift, stacking and short-distance transport operations of the various wheeled transportation vehicles. International Organization for Standardization ISO/TC110 called industrial vehicles. Electric Stacker include: full electric stacker, semi-electric stacker, reach stacker, Reach full electric stacker, reach stacker, pedestrian counterbalanced stacker. Electric Stacker widely used in factory workshops, warehouses, distribution centers and distribution centers, ports, railway stations, airports, freight yard, etc., and enter the cabin, carriages and containers for loading and unloading pallets, handling operations. Is a pallet transport, container transport essential equipment.

Main features:
1, with high stability.
2, low noise, no pollution, low failure rate.
3, gantry Manual stacker back and forth, small turning radius.
4, high hoisting height, suitable for high stacking.
Classification
1 manual hydraulic stacker (without any power plant, relies entirely on human sliding lifting, working radius is small, lifting laborious)
Two semi-electric stacker (with hydraulics and electric control parts and lifting gantries, human sliding front steering, electric lift, working radius is small, flexible and convenient)
3 full electric stacker (self-propelled electric up, easy to use, fast)

Stacker (Stacker) Introduction

Stacker (Stacker) is a crane for loading and unloading of small cranes, can enter the cabin, carriages and containers for loading and unloading pallets, handling operations. Is a pallet transport, container transport essential equipment.

Stacker English name electrics tacker Handlers. Belonging to a crane for loading and unloading of small cranes to enter the cabin, carriages and containers for loading and unloading pallets, handling operations. Is a pallet transport, container transport essential equipment.

Stacker definition
Stacker simple structure, flexible operation, fretting resistance, proof security and high performance. For narrow passage and limited space operations, is elevated in warehouses, workshops ideal equipment for loading and unloading of palletized. It can be widely used in petroleum, chemical, pharmaceutical, textile, military, paints, pigments, coal and other industries, as well as ports, railways, garages, warehouses containing explosive mixture, and access to the cabin, cabin cargo pallets and containers within loading and unloading, stacking and handling operations. Can greatly improve efficiency, reduce labor intensity of competition in the market for enterprises to win the opportunity.

The price is slightly higher.

5, all stainless steel forklift truck, vehicle stainless steel as material, environmental health requirements applicable to high places, such as food, medicine
6, riot stacker, is a special model, the production has been made mandatory licensing requirements, safety requirements applicable to higher places, expensive, technically demanding, riot Stacker with riot rating logo.
 
7, lateral stacker, stacker forks mounted on the side, side loading and unloading operations, mainly to solve the case of the channel is too small, the car production is generally installed lateral Electric pallet jack, but the formal mode of production is one of the of lateral forks, I had seen a similar exhibition in the German models, priced at one million dollars.
 
8, single-column stacker, namely in the form of traditional mast lift, the lift lever to independence, so that both sides are not parallel vertical speed limit, stable uniform, the general transmission mode is also changed from the chain-belt driven, so that uniform lifting.
 
These models commonly used models for the market, of course, Stacker classification, there are many, especially in some non-standard type stacker, variety, not enumerated, but in general the typical classification, the difference is larger the several models, other non-standard Stacker is generally based on the above models, modified dedicated to different parts.

Stacker (Stacker) classification

Stacker simple structure, flexible operation, fretting resistance, proof security and high performance. For narrow passage and limited space operations, is elevated in warehouses, workshops ideal equipment for loading and unloading of palletized
1, Pallet Stacker, Stacker front bottom leg for GB single tray or without transshipment cargo tray, features excellent inexpensive price.
 
2, wide leg stacker, stacker front bottom leg make broad, general internal width 550/680mm, wide legs can be done 1200/1500mm, can be installed

Unloading sided tray (duplex tray inside width less than the length, limited to its internal), benefits affordable, you can solve the duplex tray or some special cargo requirements.
 
3, counterbalanced stacker, stacker ago bottomless legs, Stacker added with weights, fork forward and backward may be appropriate to ensure that the goods shovel

Level. Advantages: wide electric pallet trucks, similar to traditional internal combustion forklifts; Disadvantages: too heavy vehicle too long, right channel distance requirements are relatively high, and the price is higher.
 
4, Reach stacker, counterbalanced fundamental respects similar, there is no front bottom leg weights, the difference is the car with the door frame fork backward

Move forward a certain distance, usually 560mm, so that may be appropriate to shorten the length of forklift trucks, on channel requires a certain ease, prices counterbalanced stacker similar. 

Regular inspection and maintenance

In addition to the inspection prior to each use, in order to ensure that parts of the life, performance, but also to its regular inspection and maintenance work.
1, when the forklift operator when problems arise:
a, when you encounter a problem, please contact your supervisor or technical staff to discuss repairs themselves suddenly cut in order to protect human safety.
b, the more specialized care or maintenance projects Please leave technician or trained professionals to deal, for professional truck repair.
2, maintenance
Routine Hand pallet jacks: once a day should be the main content is to keep the body surface clean, clean the surface of the battery, check the power cord is firmly and chain tension is normal.
A maintenance: once a week, in addition to routine maintenance maintenance content content, should focus on checking whether the normal work of the various components, each fastener is loose, the chain tension is appropriate, whether the chain connector pin torsion, the outer door shelves next movement is normal, hydraulic fittings for leaks, mechanical parts for unusual wear, electrical parts if there is any abnormal temperature and sparks, if found to have irregularities should be timely adjusted and cleared.
Two maintenance: should be regularly carried out, as required, to conduct a comprehensive inspection of the vehicle.
These are just some of the general introduction, the specific task is to combine your own situation, at the same time, the problem should be solved in the event, do not delay. While looking for a professional for repair maintenance units, they are not very professional in the case can not be blind to repair it yourself.

Try clutch pedal is normal. (Manual transmission models) test step inching pedal is normal

Open the hood, check the cooling water level. Check the engine oil level. Check the fan belt for cracks, wear and tear. View battery electrolyte level. Check hydraulic oil level. Check the brake oil level. Put down the hood, on the train, get seats. Seat adjusted to the appropriate location. Tilt steering wheel adjusted to the optimal position. Check horn function correctly. Test the brakes pedal is normal. Test accelerator pedal is normal. Try clutch pedal is normal. (Manual transmission models) test step inching pedal is normal. (Automatic transmission models) Operating handbrake lever is normal.

Turn the key switch is turned to ON, check the fuel oil is sufficient. View all dashboard warning lights and instrument effects are normal. Check the direction of the light control lever function properly. Check the brake lights function properly. Start the engine, let the Electric stacker warm up for 5 minutes, check whether there is abnormal sound or abnormal vibration. Check the mast lift and tilts forward and back is smooth and view whether hydraulic cylinder and tubing leak. The lifter slowly displacing safe area. Check the clutch (inching switch function) is normal. Check the braking force is sufficient. Check the steering wheel is normal.

From the foregoing, it is necessary to check the work of dozens of items, is a complicated matter, but the most important security, Stacker event of an accident, its impact and the damage is significant. In order to maximize safety, reduce the risk to a minimum, the operator can still hope a lot of attention to these issues.