Self-locking hook

Abstract

The invention discloses a self-locking hook. The self-locking hook comprises a lifting rod and a hook body, a plurality of through holes are machined in the lifting rod, and pivots are inserted into the through holes; and the pivots are externally connected with a lifting device, and a strip-shaped groove is further formed in the lifting rod. The hook body is rotationally connected with the lifting rod through the third pivot, and the sharp end of the hook body coordinates with the strip-shaped groove of the lifting rod. The rotating range of the hook body does not exceed the maximum size of the strip-shaped groove, the strip-shaped groove is formed in the arc-shaped portion of the lifting rod, the third pivot penetrates through the strip-shaped groove, and through holes are machined in the two sides of the strip-shaped groove. According to the self-locking hook, the hook body is movably mounted on the lifting rod, a weight is hung, the lifting rod is pulled up, the lifting rod is in avertical state, the weight is hung on the hook body, the arc-shaped end of the hook is inserted into the strip-shaped groove under the action of gravity, the lifting rod and the hook body bear tensile force to be in a locked state, and self-locking is achieved.

Description

technical field [0001] The invention relates to the technical field of partial improvement design of hoisting machinery, in particular to a self-locking hook. Background technique [0002] In the existing technology, the engineering field often needs to face large and heavy operation objects. At this time, the spreader is a commonly used tool, and the hook on the spreader is an important part of the spreader, and special care is required. What is dealt with is the anti-slip problem of the hook. On the one hand, the hook must have sufficient strength. On the other hand, the hanging of the hook must be stable to prevent the item from slipping off the hook during the lifting process. For this reason, a variety of self-locking hooks have been developed in the engineering field. The most common self-locking method is to set a spring card in the opening area of ​​the hook. The lanyard bounces from the outside to the inside. Return to the original position under the action of the ...

AI Technical Summary

Problems solved by technology

For this reason, a variety of self-locking hooks have been developed in the engineering field. The most common self-locking method is to set a spring card in the opening area of ​​the hook. The lanyard bounces from the outside to the inside. Return to the original position under the action of the hook and lock the opening area of ​​the hook to realize the self-locking anti-slip function of the hook. The spring card in this way is the weak link of the self-locking mechanism, and it still cannot guarantee the safety of the hook.

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