A restraining roller (100) of a hook winch (8) has a roller middle part (101), a first roller end part (102) and a second roller end part (103). The roller middle part (101) is formed in a columnar shape, and each of the first roller end part (102) and the second roller end part (103) is formed in a roughly circular truncated cone shape. The widths of the first roller end part (102) and the second roller end part (103) are greater than the diameter of a wire rope (83). A difference in diameter between an inner end and outer end of each of the first and second roller end parts (102) and (103) is less than the diameter of the wire rope (83). Where a taper angle is defined as an angle formed between a line arranged in parallel to the surface of the roller middle part (101) and a line arranged in parallel to the surface of each of the first and second roller end parts (101) and (103) in a plane view seen in a direction perpendicular to a center axis of the restraining roller (100), a taper angle θ3 of the first roller end part (101) and a taper angle θ4 of the second roller end part (102) are different from each other.


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    Titel :

    WINCH FOR PIPELAYER AND PIPELAYER EQUIPPED WITH SAME


    Beteiligte:
    UEMURA TAKUYA (Autor:in) / TAKEUCHI YASUHIKO (Autor:in) / YAMAMOTO HIROKI (Autor:in) / TERAMOTO KAZUMASA (Autor:in)

    Erscheinungsdatum :

    2016-07-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66C Krane , CRANES / B66D Haspeln , CAPSTANS / F16L PIPES , Rohre



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