Anti-rotation lifting hook

Abstract

The invention relates to a work fixture used in the lifting process, in particular to an anti-rotation lifting hook. The anti-rotation lifting hook comprises a lifting lug, wherein a cavity is formed in the lower part of the lifting lug; a tightening nut is arranged on a step inside the lower end of the cavity; a thrust ball bearing is mounted inside an mounting groove in the upper end surface of the tightening nut; a connecting part at the upper end of the lifting hook penetrates through the inner hole of the tightening nut and a bearing hole of the thrust ball bearing sequentially, and stretches into the inner cavity of the lifting lug; a swivel nut is sleeved on the connecting part of the lifting hook stretching into the inner cavity of the lifting lug; the lower part of the swivel nut is pressed on the upper end face of the thrust ball bearing. According to the invention, a connection part of the anti-rotation lifting hook and a steel wire rope is not fixed, so that after the steel wire rope is straightened by a force and the lifting hook rotates, the torque inside the steel wire rope can be released under the condition that the lifting hook does not rotate, thereby preventing risks caused by rotation of the lifting hook in the operating process and reducing unnecessary loss.

Description

technical field [0001] The invention relates to a tooling fixture used in the hoisting process, in particular to an anti-rotation hook. Background technique [0002] The rotation of the hook often occurs without any warning during the equipment hoisting operation. When the hoisting machine lifts the heavy object, the hook rotates, and the wire rope wound between the hook and the pulley block at the top of the boom is twisted together, and is entangled. The heavy object of hoisting also rotates together with suspension hook, at this moment can't continue to hoist or put down the heavy object that has been hoisted. The rotation of the hook will affect the normal operation of the hoisting operation and seriously threaten the safety of operators and equipment, so it must be avoided. [0003] The wire ropes used in hoisting machinery will generate torque when stressed. The torque is caused by the way the wire rope is made, first the wires are twisted together helically to form ...

AI Technical Summary

Problems solved by technology

[0004] On the other hand, there are many external factors that directly cause the hook to rotate. For example, external forces such as manpower or wind force during the hoisting process push the hook to rotate. Cause the hook to be unbalanced, cause the hook to rotate, etc.

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