To simplify a boom telescopic mechanism and wiring route of wiring and piping in a telescopic boom.SOLUTION: A telescopic boom comprises: a telescopic cylinder 50 which expands and contracts a telescopic boom 10 in a nesting manner; a cylinder fixing sheave 53 fixed to a base end part 52b of a cylinder 52; five wire ropes 21 to 25 which are wired between booms so as to project and store a top boom 15 and other intermediate booms 13, 14 other than a first intermediate boom 12 in association with a telescopic operation of the telescopic cylinder 50; and wiring or the like which is routed and wired between a base end part 11a of a base boom 11 and a tip of the top boom 15. At least a part of the wiring or the like is wired on the same route as the wiring route of the wire ropes 21 to 25.SELECTED DRAWING: Figure 3

    【課題】伸縮ブームにおいて、ブーム伸縮機構と配線及び配管の配索経路を簡略化する。【解決手段】入れ子式に格納される伸縮ブーム10を伸縮させる伸縮シリンダ50と、シリンダ52の基端部52bに固定されたシリンダ固定シーブ53と、伸縮シリンダ50の伸縮動作に連動して、トップブーム15と第1中間ブーム12以外の他の中間ブーム13,14とを突出・収容させるようにブーム間に配索された5本のワイヤロープ21〜25と、ベースブーム11の基端部11aとトップブーム15の先端部との間に掛け回されて配索された配線等と、を備え、配線等の少なくとも一部は、ワイヤロープ21〜25の配索経路と同じ経路に配索されている。【選択図】図3


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    Title :

    TELESCOPIC BOOM


    Additional title:

    伸縮ブーム


    Contributors:

    Publication date :

    2020-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / B66C Krane , CRANES



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