Turnover device of pulley of heavy steel structural part

Abstract

The invention relates to a turnover device of a pulley of a heavy steel structural part, which comprises a shaft coupling plate, the pulley with a groove, a shaft, a copper bush and a gasket; a load-bearing annular steel wire rope is placed on the pulley with the groove for assembling together, and has the advantages that the structure is simple, the cost is low, two main hook and secondary hook lifting equipments and the parts which are provided in a production workshop are capable of overturning, the production efficiency can be increased, the production time and the cost can be saved, and has the advantages of specialty, simplicity, reliability, practicality and the high efficiency.

Description

technical field [0001] The invention relates to a turn-over system in the air, in particular to a turn-over device for a large steel structure. Background technique [0002] In the heavy industry machinery manufacturing industry, many kinds of large workpieces are produced, with a length of tens of meters and a weight of tens of tons. During the production process, the workpiece needs to be turned over due to assembly, welding, grinding, painting, hoisting and shipping. The above production process needs to be completed. Now in the production process, the lifting lugs or temporary welding lugs are generally welded on the workpiece according to the drawing requirements, and then the workpiece is lifted by driving and crane, and lifted by the main hook and auxiliary hook. Cooperate to turn the workpiece over, and irregular large pieces need two cranes to cooperate with turning over. At present, the crane configuration of the production and processing unit is a large-tonnage cr...

AI Technical Summary

Problems solved by technology

[0002] In the heavy industry machinery manufacturing industry, many kinds of large workpieces are produced, with a length of tens of meters and a weight of tens of tons. During the production process, the workpiece needs to be turned over due to assembly, welding, grinding, painting, hoisting and shipping. The above production process needs to be completed. Now in the production process, the lifting lugs or temporary welding lugs are generally welded on the workpiece according to the drawing requirements, and then the workpiece is lifted by driving and crane, and lifted by the main hook and auxiliary hook. Cooperate to turn the workpiece over, and irregular large pieces need two cranes to cooperate with turning over. At present, the crane configuration of the production and processing unit is a large-tonnage crane plus a small-tonnage crane. When turning over, the power of the hook on the same side is different, the lifting speed is inconsistent, and the cooperation of the driver and the operator cannot reach the same level. In the case of heavy weight, the load-bearing steel wire rope will produce reverse friction with the workpiece, resulting in deformation of the stress point of the workpiece, roughening and breakage of the steel wire rope, and serious consequences

The main hook and the auxiliary hook on the same side cannot reach the same speed. The center of gravity of the lifting workpiece will fluctuate if it keeps changing Severe overload, (1) It is easy to paralyze the lifting mechanism of the auxiliary hook, and the brake fails (2) The pulley shaft is deformed and the wire rope is broken, resulting in serious consequences

Turning over irregular super-long and super-wide parts will increase the distance between the main hook and the auxiliary hook on the same platform, and the angle of the wire rope will also change at the same time. It will lead to roughening and breaking of the wire rope of the pulley, causing serious consequences. The above steps of turning over are unsafe and waste production time

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