Bridge crane trolley gear due to vibration

Bridge crane trolley gear due to vibration, abrasion, pressure, temperature and other factors, the combination of surface sealing parts often appear static leakage. Traditional treatment methods to remove reducer, replacing gaskets or sealant applied, but time-consuming and difficult to ensure the sealing effect, will appear again in the operation of leakage. Contemporary Western countries use more polymer composites leakage field of governance, the most widely Blessed World Blue series. Polymer-free disassembly repair and materials have excellent adhesion, oil resistance and 350% elongation, good to overcome the impact of vibration reducer, repair effect is more effective than traditional methods.
Wear governance
Bridge crane initiative running gear wheels and carts frequently repeated electrics tacker stop and parking will cause reverse gear torque of each axis, vibration increases, could easily lead to leakage. Such problems occur, the traditional method and more to be machined after welding or repair the main brush, but there are some drawbacks both: high thermal stress generated by welding can not be completely eliminated, prone to bend or break; the brush plated by the coating thickness limit is easily peeled off, and the above two methods are metal with metal repair, you can not change the "hard to hard" with the relationship, the combined effect of the force, will cause wear again. New repair method mostly polymer composites based, and the application of more surgery products, which has superior adhesion, excellent compressive strength and other performance. Applied Polymer repaired, neither welding thermal stress on the repair thickness is not restricted, while products with metallic materials do not have the concession, can absorb shock and vibration equipment, to avoid the possibility of re-wear and greatly extended equipment component life, save a lot of down time, creating significant economic value.

Allowed to casually throwing things down from the car.

(14) limit switches and interlock protection device should always check.
(15) is not permitted to touch the limit switch as a parking solution.
(16) lifting the brake problem, you can not lift heavy objects.
(17) was hanging objects are not allowed to run over the people or equipment.
(18) When welding unit of the crane, to specifically set the ground, do not allow the use of body ground.
(19) hooks in the lower limit position, the roll must retain the safety loops more turns.
(20)Hand Pallet Truck not collide with each other, but does not allow the use of a crane to push another crane to work.
(21) lifting heavy objects, liquid metal, explosive and dangerous goods, you must first slowly lifting from the ground 100 ~ 200mm, trial brake reliability.
(22) repair and inspection of the lighting, the voltage must be 36V or less.
(23) Overhead Crane all electrical equipment enclosure should be grounded. If the car is not welded to the main beam track should be taken when welding ground measures. Ground wire cross-sectional area greater than 75mm2 available galvanized flat iron or bare copper or greater than 10mm2 30mm2 galvanized round. Cab or crane body ground position should be more than two. Any point on the crane to the power between the neutral point grounding resistance should be less than 4Ω.
(24) to have regular safety technical inspection, good pre-preparatory work.

sometimes in the transmission conduit sparks some serious blasting trolley line

Safety trolley line is a new mobile power supply unit, with its insulation, security, temperature, vibration, energy saving and other advantages to gradually replace the old bare angle iron and copper trolley line. Safety trolley line from the caulking tube or slot in the plastic plate in the T2 smooth copper or aluminum conductors embedded wearable as a carrier fluid, a combination of transmission a conduit under the open slot to facilitate the collector operation, a high wear resistance by the collector copper-graphite brush of the power-oriented electrical work.
Overhead crane in use and easy off, sometimes in the transmission conduit sparks some serious blasting trolley line ", resulting collector replaced too frequently, affecting production. To this end, the following improvements:
(A) increasing the collector brushes chamfered and polished smooth;
(2) increasing the collector between two opposite brush spring strength, flexibility, ensure spring return freely;
(3) to deepen. Electric pallet truck collector in a spring seat, the return spring to ensure the brush is not easy in the work "bit string";
(4) two safety trolley line connections connecting block should be chamfered to ensure a smooth transition collector. Meanwhile, to ensure the safety of the normal use of the trolley line, driving workers standardize operations, maintenance workers of periodic maintenance, periodic inspection is also essential.

Vice car to flip and other auxiliary work. 2 clamp crane:

Injection Mixer for lifting hot metal, steel furnaces and continuous injection of molten steel ingot lifting equipment or ingot molds and other purposes. Main car lifting ladles, ladles, Vice car to flip and other auxiliary work.
2 clamp crane:
The use of high-temperature steel ingot clamp vertically lifted onto a soaking pit furnace, or put it out into the car shipped ingot.
3 off the ingot crane:
From the ingot ingot molds used to force prolapse. Small car off the ingots have a special device, way off the ingot mold according to the shape of the ingot: Some off the plunger pressed ingot ingot crane, lift the ingot mold with tongs; some with tongs pressed ingot mold, with the tweezers lift ingots.
4 charging crane:
Added to the open electric stacker in charge. Lord of the column with the bottom of the car to pick rod for stirring bins and place it into the furnace. The main column is rotatable about a vertical axis of rotation, pick rod can swing up and down and swing. Vice trolley for furnace repair and other auxiliary operations.
5 Forging crane: [1]
With forging hydraulic press used with large workpieces. Main car hanging on a hook turn special feeder to support and flip the workpiece; Vice trolley for lifting workpieces.
?? Lifting is a modern industrial production and transport of 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 sites are widely applied.

Bridge girder structure type more typical are

Bridge operating agencies
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 omposed of two dual-beam bridge girders and by the end beam components. Main beam and side beams rigidly connected to the wheels at both ends with end beam for supporting the run on the elevated bridge. Main beam welded rails for lifting trolley. Bridge girder structure type more typical are:
1 box-shaped structure
(1) track box-shaped double beam is widely used in a basic form, the main beam from the upper and lower flange plates and sides of the vertical web composition, trolley rails arranged on the flange plate on the center line, and its simple structure, easy to manufacture, suitable for mass production, but the larger self.
(2) Partial rail box double side rail box girder and single girder cross-section are from the upper and lower flange plates and unequal thickness of primary and secondary webs composition, Hand Pallet Truck rails arranged in the main webs top box Short body stiffener save where partial rail box girder by a single wide-flange box girder instead of two main beams, weight smaller, but more complex manufacturing.
2 four truss structure
The four combined into a closed space plane truss structure, the upper surface of the horizontal truss generally paved walkway plates, light weight, stiffness, but compared with other structures, size large, more complex manufacturing, fatigue strength is low, has been less production.
3 TRUSS [1]
Similar to the off-track box girder by four steel plates form a closed structure, in addition to the primary web is a real belly-shaped beam, the other three steel plates in accordance with the design requirements into many windows, forming a non-fasting truss diagonals in the upper and lower horizontal truss paved walking platen surface, cranes operating agencies and electrical equipment installed in the tray inside, lighter weight, the overall stiffness, which is more widely used in China as a pattern.

which features are summarized below:

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 system 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 electric stacker 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.

mast mast bottom should be compacted bottom handle, smooth, spread over two sleepers

Bridge crane within the plant, because the top rail from the roof chord close, plus overhead cranes are larger in size and weight, it is not mechanized lifting. SMEs often use a single mast crane lifting the overall standing, so you can improve efficiency, shorten the construction period and reduce high-altitude operations, the construction procedure is as follows.
(A) the erection of the mast
① mast mast height maximum height of the ground to the roof top of the mast to a height less operating space between the roof and the height of the mast sleepers inquiry. Minimum height should meet the needs of lifting height.
② mast mast position due to be erected in the carts between the two main beam bridge crane center of gravity, the car must be biased, but the mast should deviate from the centerline of plant, shown in Figure 7-8. Its offset should be based on weight carts, trolleys and trolley weight offset distance determined by calculation.
③ mast mast bottom should be compacted bottom handle, smooth, spread over two sleepers, if necessary, can be added between two sleepers rails or beams, paved area determined by calculating base endurance, ensure that the ground bear mast axial pressure.
④ mast mast electric stacker methods used mobile cranes erect, quick and safe crane beam can also be used stand mast bracket wrench can also be used auxiliary mast vertical mast. Using the crane beam corbel Erecting the mast, to carry on the crane beam corbel force checking to ensure the transverse horizontal component does not exceed the maximum weight within the span of the bridge crane nominal weight and the amount of the sum of a trolley / 20.
Erection of masts, the mast should be pre-wind cable rope bindings temporarily close the roof truss bottom chords on the mast until the mast was hanging to determine the location immediately after the entire wind cable rope fastened on top of the mast and tighten the ground, such as individual wind cable rope lift after the force has stayed truss chord or circumstances, the application temporarily wind cable hove live mast, fixed wind cable rope adjusted to the appropriate location, and then release the temporary wind cable wire.