Self-locking type safe lifting hook for crane

Abstract

The invention discloses a self-locking type safe lifting hook for a crane. The self-locking type safe lifting hook comprises a lifting hook body which comprises a hook column, a hook tip and a hook beam. The hook tip is provided with an arc groove, an anti-separation rod is arranged in the arc groove and provided with a hinge shaft, the top end of the anti-separation rod is provided with a locking hole, and the bottom end of the anti-separation rod is connected with a pressing block. The hook beam is provided with a spring clamping groove, and a compression spring connected with the pressing block is arranged in the spring clamping groove. An elastic limiting stop block is arranged on the inner wall of the hook column and provided with a pressure sensor. The hook column is further provided with a self-locking device which is provided with a locking slotted hole, and a locking pin is arranged on the locking slotted hole. According to the lifting hook, the anti-separation rod is moved through the hinge shaft, the pressure sensor is used for achieving opening and closing of the locking pin, and thus automatic opening and closing of the lifting hook body are achieved, labor is saved, work efficiency is high, vibration and unhooking are prevented, and the safety performance is high; and the weight is low, the strength is high, and the service life is long.

Description

Technical field [0001] The invention relates to an engineering machine, in particular to a self-locking safety hook for a crane. Background technique [0002] Cranes, also known as cranes, refer to multi-action hoisting machinery that vertically lifts and horizontally transports heavy objects within a certain range. The working characteristic of the crane is to do intermittent movement, that is, the corresponding mechanism of reclaiming, transporting, unloading and other actions in a working cycle is alternately working. It is widely used in industrial production, construction, freight terminals, storage and other industries , Mainly used for lifting various goods. In addition to the power unit and the steel rope for hoisting, the crane also has hooks. The hook is an important part of the crane. It plays an important role in the entire lifting process and bears all the loads of the lifting. Safety directly affects the operation of the crane. In the course of use, once the hook ...

AI Technical Summary

Problems solved by technology

But there is following defect in anti-off design like this: because the anti-slip bar is close to the inwall of hook body hook tip, when taking out or replacing the sling, the anti-slip bar needs to be artificially pressed down toward the inner space of the suspension hook body. The sling is heavy and requires two people to operate, which wastes manpower; in addition, because the anti-slip rod occupies the opening area of ​​the hook body, if the size of the sling is large, the opening area between the anti-slip rod and the hook tip of the hook body is small. This increases the difficulty of replacing or taking out the sling and reduces work efficiency

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