To provide a parent hook accidental winding prevention device that even if a crane operator winds up a main winding rope by incorrect operation when a parent hook is suspended below the crane and fixed, can stop this winding in a mechanically safe manner.SOLUTION: In this device A, a wire rope between arms of a pair of arms is disposed between a boom 1 and a main winding rope 11 and adjacent to the main winding rope 11, and when winding of the main winding rope 11 occurs, drawing of the main winding rope 11 to the boom 1 side is received by the wire rope, a limit switch senses pulling force from this wire rope and transmits a control signal to a controller, and the controller stops the winding of the main winding rope 11 by a main winding winch.SELECTED DRAWING: Figure 16

    【課題】親フックをクレーンの下方まで下げて固定した際に、クレーンのオペレータが誤操作により主巻ロープを巻き上げても、この巻き上げを機械的に安全に停止させる。【解決手段】本装置Aでは、一対のアームにより各アーム間のワイヤーロープを、ブーム1と主巻ロープ11との間に主巻ロープ11に近接して配置し、主巻ロープ11の巻き上げが発生した際に、主巻ロープ11のブーム1側への引き寄せをワイヤーロープで受けて、このワイヤーロープからの引張り力をリミットスイッチで感知して制御信号をコントローラーに送信し、コントローラーにより主巻用のウィンチによる主巻ロープ11の巻き上げを停止する。【選択図】図16


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    Title :

    PARENT HOOK ACCIDENTAL WINDING PREVENTION DEVICE


    Additional title:

    親フック誤巻防止装置


    Contributors:
    HOTTA MUNENORI (author) / OGAWA SEITARO (author) / ITO SHO (author)

    Publication date :

    2023-08-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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