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