Guide pulley device with lifting steel wire rope pre-tightening function

Abstract

The invention discloses a guide pulley device with a lifting steel wire rope pre-tightening function. The guide pulley device comprises a guide pulley arranged on a crane cantilever head, a plurality of pressing rollers are further arranged on the side part of the guide pulley, a lifting steel wire rope is clamped between the pressing rollers and the guide pulley, the guide pulley is connected with a speed reducing mechanism, and the speed reducing mechanism is used for controlling the torque of the guide pulley so as to pre-tighten or release the lifting steel wire rope. According to the guide pulley device with the lifting steel wire rope pre-tightening function, when the lifting steel wire rope is recycled, pre-tightening force can be applied to the lifting steel wire rope, and the problems of rope disorder, layer jumping and crushing of the lifting steel wire rope on a winding drum are solved; and the lifting steel wire rope can be smoothly released by regulating and controlling the speed reducing mechanism, so that the complexity of disassembly and assembly is avoided.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a guide pulley device with the function of pre-tightening a hoisting wire rope. Background technique [0002] Before the crane is hoisted, it is necessary to pre-tighten the bottom hoisting wire rope on the drum of the crane to prevent problems such as disordered ropes, jumps, and crushing of the bottom hoisting wire rope from affecting the service life of the wire rope. Generally, when pre-tightening the hoisting wire rope, it is necessary to release all the wire ropes, and pre-tighten the hoisting wire rope after loading. The existing method cannot effectively pre-tighten the hoisting wire rope when the crane disassembles the high-altitude heavy object, which leads to the problem of elastic ropes on the hoisting wire rope on the reel during the process of lowering the heavy object from high altitude. In order to solve this problem, an empty hook pretensioning device...

AI Technical Summary

Problems solved by technology

The existing method cannot effectively pre-tighten the hoisting wire rope when the crane is dismantling the high-altitude heavy object, which leads to the problem of the hoisting wire rope on the reel during the process of lowering the heavy object from the high altitude.

In order to solve this problem, an empty hook pretensioning device is generally installed on the hoisting wire. During the installation process, the empty hook pretensioning device needs to be installed near the turntable to facilitate the operator's control. When the hoisting wire rope is lowered, the operator needs to Only by removing the empty hook pretensioning device can the hoisting wire rope be lowered smoothly, but the installation and disassembly of the empty hook pretensioning device is too cumbersome

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