A kind of pulley structure of truck for tower crane
A technology of trucks and pulleys, applied in the direction of traveling mechanism, load hanging components, transportation and packaging, etc., can solve the problems of uneven force on the four rollers of the trolley, affecting the lifting performance of the whole machine, and the trolley is not running smoothly, etc. Achieve the effects of reducing the risk of disturbance, light weight, and eliminating potential safety hazards
Active Publication Date: 2016-04-13
XUZHOU CONSTR MACHINERY
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Problems solved by technology
[0002] In the tower cranes that use the trolley to change the amplitude, the main structural forms of the trolley are triangle and quadrilateral. Although the trolley with the triangular structure is light in weight and simple in structure, the welding deformation of the trolley is particularly large during the production process, which is easy to cause the trolley The four corners of the trolley are not in the same track plane, which causes uneven force on the four rollers of the trolley during use, and the trolley is not stable when walking, posing safety hazards
In addition, the triangular structure of the trolley results in a small distance between the front and rear of the pulleys installed on the trolley structure. When the trolley is used in conjunction with the hook, it is easy to cause the hoisting wire rope to twist, which poses a safety hazard.
Although the quadrilateral structure load trolley is easy to produce and process, and the welding deformation is small, the trolley structure is heavy and the distance between the pulleys is small. When the front and rear spacing of the pulleys on the trolley structure is increased, the trolley structure will further increase, which will directly affect the lifting performance of the whole machine
Method used
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[0011] The present invention will be further described below in conjunction with the drawings.
[0012] Such as figure 1 with figure 2 As shown, the truck pulley structure for the tower crane includes a frame 1, a pulley 2, a beam 3, and a wheel 4. The machine is symmetrical. The side of the frame 1 is fixedly connected by the beam 3, and the pulleys 2 are arranged on the beam. 3 Outside, the distance between the left and right pulleys 2 is increased, and the non-parallelism between the lifting wire ropes passing through the left and right pulleys 2 is increased, thereby improving the condition of the lifting wire disturbance. The steel wire passing through the pulley 2 is arranged in the frame 1, to avoid the lifting wire rope being slack when the lifting wire rope is not hoisting, which will cause the lifting wire rope to wear out. The pulley 4 and the pulley 2 are lined up. The pulley 2 is placed on the outside of the frame 1 to obtain a larger distance between the pulleys 2...
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The invention relates to a pulley structure for a truck used in a tower crane, comprising a frame (1), a pulley (2), a beam (3) and a pulley (4). , the pulleys are respectively arranged on the outside of the beam, and the passing wheels are set in the frame through the steel wires of the pulleys, and the passing wheels and the pulleys are arranged in a line; it does not increase the structural weight, does not affect the lifting performance of the tower crane, is easy to produce and process, and is welded and deformed Small, and increase the distance between the pulleys before and after installation, which can greatly reduce the risk of hoisting wire rope twisting, improve the safety performance of the whole machine when hoisting, and the pulleys placed inside the frame can eliminate the slack and slack of the lifting wire rope The wear and tear caused by the collision between the trolleys can reach the life of the hoisting wire rope.
Description
Technical field [0001] The invention relates to a truck pulley structure for a tower crane, belonging to the technical field of wheel support. Background technique [0002] In the tower crane that passes the trolley luffing, the main structure of the trolley is triangle and quadrilateral. Although the triangle structure of the trolley is light in weight and simple in structure, in the production process, the welding deformation of the trolley is particularly large, which is easy to cause the trolley. The four corners of the trolley are not in the same track plane. During use, the four rollers of the trolley are not evenly stressed, and the trolley is not stable when traveling, which poses a safety hazard. In addition, the triangular structure of the load trolley results in a small distance between the front and rear of the pulleys installed on the trolley structure. When the load trolley is used in conjunction with the hook, it is easy to cause the hoisting wire rope to twist and...
Claims
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Inventor 王建军米成宏朱斌周瑜刘振单立
Owner XUZHOU CONSTR MACHINERY