PROBLEM TO BE SOLVED: To provide an auxiliary hoisting device which prevents unlocking of a hydraulic cylinder from a stored state when it is attached to a work machine body and a mast is in a non-vertical posture.SOLUTION: An auxiliary hoisting device comprises: a hydraulic cylinder 51 swingably suspended from a mast; a fixed plate 72 fixed to the auxiliary hoisting device and provided with a pin insertion hole 72a; a pin drive device fixed to the mast; and a stepped pin 77 which is inserted and withdrawn by the pin drive device, fixes the auxiliary hoisting device to the mast when inserted into the pin insertion hole 72a of the fixed plate 72, and brings the auxiliary hoisting device into a releasable state from the mast when withdrawn from the pin insertion hole 72a.SELECTED DRAWING: Figure 6

    【課題】作業機械本体に取り付けられてマストが非鉛直姿勢のとき、油圧シリンダを格納状態からアンロックできないようにする補助吊上装置を提供する。【解決手段】補助吊上装置は、マストから揺動自在に吊下られている油圧シリンダ51と、補助吊上装置に固定され、ピン挿入孔72aが設けられた固定プレート72と、マストに固定されたピン駆動装置と、ピン駆動装置により挿抜され、固定プレート72のピン挿入孔72aに挿入されると補助吊上装置をマストに固定し、ピン挿入孔72aから抜かれると補助吊上装置をマストから解放可能な状態とする段付きピン77とを備える。【選択図】図6


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    Title :

    AUXILIARY HOISTING DEVICE AND WORK MACHINE HAVING AUXILIARY HOISTING DEVICE


    Additional title:

    補助吊上装置および補助吊上装置を備えた作業機械


    Contributors:

    Publication date :

    2017-10-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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