The invention discloses an anti-dropping device for effectively preventing a crane hook from unhooking. The hook comprises a straight handle section and a hook section, and a flange part is arranged at the tail end of the hook section; the straight handle section is provided with a hinge hole, the hinge shaft is rotationally arranged in the hinge hole, the rear end of the anti-disengaging plate is fixed to the hinge shaft, the front end of the anti-disengaging plate is provided with a clamping groove capable of being clamped to the inner side of the lifting hook section below the flange part or clamped to the inner side of the flange part, one end of the balance weight plate is fixed to the hinge shaft or the anti-disengaging plate, and the other end of the balance weight plate extends to the rear side of the lifting hook section. The torque of the counterweight plate is larger than that of the anti-falling plate. According to the lifting hook, the anti-falling plate is hinged, and the counterweight plate with large torque is arranged, so that the clamping groove in the front end of the anti-falling plate and the flange part of the lifting hook form a normally-closed structure, and the lifting hook can automatically enter the lifting hook section to form a closed anti-falling hook effect through the dead weight of the sling when the sling is installed; and the clamping groove at the front end of the anti-falling plate can prevent the anti-falling plate from shaking left and right to reduce abrasion, so that the sling is difficult to fall off, and therefore, the anti-falling sling has the characteristics of simple structure, safety, reliability and convenience in use.

    本发明公开一种有效防止行车吊钩脱钩的防脱器,吊钩包括直柄段、吊钩段,吊钩段末端设突缘部;直柄段设有铰接孔,铰接轴转动设于铰接孔内,防脱板后端与铰接轴固定且前端设有可卡接在突缘部下方的吊钩段内侧或可卡接在突缘部内侧的卡槽,配重板一端与铰接轴或防脱板固定且另一端延伸到吊钩段后侧,配重板扭矩大于防脱板的扭矩。本发明通过铰接设置防脱板,并设置扭矩较大的配重板使防脱板前端的卡槽与吊钩的突缘部形成常闭结构,使得装入吊索具时通过吊索具自重可自动进入吊钩段内形成闭合的防脱钩效果,且防脱板前端的卡槽还能防止防脱板左右晃动而减少磨损使得吊索具难以脱出,因此具有结构简单、安全可靠、使用便捷的特点。


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    Title :

    Anti-disengaging device capable of effectively preventing crane hook from unhooking


    Additional title:

    一种有效防止行车吊钩脱钩的防脱器


    Contributors:
    ZHANG JIANGLONG (author) / LI JUN (author) / ZHANG CUNBAO (author) / LUO RONGHUI (author) / WANG GANG (author) / ZHAO QIANG (author) / JIANG QIU (author) / SUN GUI'AI (author) / MENG ZHAOLEI (author) / WANG HAN (author)

    Publication date :

    2022-07-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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