To provide a gib capable of being retracted toward a boom side from an orientation where the gib is hanged down as well as being inclined toward a front side relative to a vertical direction and to configure the device for this easily.SOLUTION: A sheave for retraction 61 is attached to a boom 30 and rotatable with a rotation shaft in a transverse direction Y (boom width direction) as center. A rope for retraction 63 is hanged at the sheave for retraction 61 and attached at the rope for retraction attachment part 47 arranged at a gib 40. A winch for retraction (tension for retraction imparting part) imparts a tension to the rope for retraction 63 in a boom inclination hanging down orientation which is an orientation with the gib 40 hanged down as well as that boom 30 is inclined toward a front side X1 relative to a vertical direction Z.SELECTED DRAWING: Figure 4

    【課題】上下方向に対して前側にブームが傾斜するとともにジブが垂下した姿勢から、ジブをブーム側に引き込むことができ、そのための装置を簡易に構成できるようにする。【解決手段】引込用シーブ61は、ブーム30に取り付けられ、横方向Y(ブーム幅方向)の回転軸を中心に回転自在である。引込用ロープ63は、引込用シーブ61に掛けられ、ジブ40に設けられる引込用ロープ取付部47に取り付けられる。引込用ウインチ(引込用張力付与部)は、上下方向Zに対して前側X1にブーム30が傾斜するとともにジブ40が垂下した姿勢であるブーム傾斜ジブ垂下姿勢のときに、引込用ロープ63に張力を付与する。【選択図】図4


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    Title :

    GIB RETRACTING DEVICE AND GIB RETRACTING METHOD


    Additional title:

    ジブ引込装置およびジブ引込方法


    Contributors:

    Publication date :

    2019-01-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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