To realize a coming-off stop device of a hook 1 which has easy hooking/releasing operations of a wire rope, a smooth movement and an excellent strength by a mechanism completely different from the conventional.SOLUTION: A coming-off stop device 100 of the hook 1 comprises: a hanging blockade member 5 rotatably connected to a bracket 3 which protrudes to the front from a tip 13 of the hook 1; an energization member 6 for energizing the hanging blockade member 5 in a direction of rotating forward; an opening-stop frame 8 rotatably connected to a lower end part of the hanging blockade member 5, extending backward, and attached so as to turn around the back of the hook 1; and a holding member for regulating the opening-stop frame 8 from lifting. The hanging blockade member 5 is held at a position to block a hanging port 10 of the hook 1 in a forward leaning attitude when no external force acts. The hanging blockade member 5 is pushed in from the front, then the opening-stop frame 8 moves backward while raising its front part and the hanging port 10 opens.SELECTED DRAWING: Figure 1
【課題】ワイヤーロープの掛け外し操作が簡単で、動作が円滑であり、強度にも優れるフック1の外れ止め装置を、従来とは全く異なる機構によって実現する。【解決手段】フック1の外れ止め装置100は、フック1の先端部13よりも前方まで迫り出すブラケット3に回動可能に連結される掛け口封鎖部材5と、掛け口封鎖部材5を前方へ回動する向きに付勢する付勢部材6と、掛け口封鎖部材5の下端部に回動可能に連結されて後方へ延び、フック1の後方を回り込むように取り付けられた開き止めフレーム8と、開き止めフレーム8が持ち上がるのを規制する抑え部材と、を具備する。外力が作用しないとき、掛け口封鎖部材5は前傾姿勢でフック1の掛け口10を塞ぐ位置に保持され、掛け口封鎖部材5が前方から押し込まれると、開き止めフレーム8がその前部を上昇させながら後方へ移動して掛け口10が開口する。【選択図】図1
COMING-OFF STOP DEVICE OF HOOK
フックの外れ止め装置
2020-09-17
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |
HOOK WITH FALLING STOP, PRESSER MEMBER FOR SUSPENSION TOOL
European Patent Office | 2015
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