To provide a boom head mechanism for a crane truck held by both side plates via different support shafts and in which an auxiliary hoist guide sheave and a main hoist guide sheave are arranged in the middle of a leading end part and on one side of a rear end, respectively, so as to partly overlap, wherein a rope with a socket attached to its leading end is stretched across the main hoist guide sheave from outside.SOLUTION: A gap space in which a rope for suspending a socket is transversely movable is provided in an area partly overlapping between an auxiliary hoist guide sheave and a main hoist guide sheave. While a leading end part of the rope with a rope socket attached thereto is kept lowered, the rope is transversely moved and passed through the gap space to be stretched across the main hoist guide sheave.SELECTED DRAWING: Figure 1

    【課題】異なった支軸で両側板に保持され、先端部中央に補巻ガイドシーブが、後端部の一方の側に主巻ガイドシーブが、一部重なって配置されて成るクレーン車のブームヘッド機構にあって、先端にソケットを付したままのロープを外部から主巻ガイドシーブに架設装備すること。【解決手段】補巻ガイドシーブと主巻ガイドシーブとの間で一部重なった領域に、ソケット垂下用のロープの横移動可能な隙間空間を設け、この隙間空間内を、ロープソケットが付されたロープの先端部を降下させた状態で、当該ロープを横移動させ、当該隙間空間を通過させて、前記主巻ガイドシーブに架設装備すること。【選択図】図1


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    Titel :

    BOOM HEAD MECHANISM FOR CRANE TRUCK


    Weitere Titelangaben:

    クレーン車のブームヘッド機構


    Beteiligte:

    Erscheinungsdatum :

    2020-07-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B66C Krane , CRANES



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