PROBLEM TO BE SOLVED: To prevent the large descending of a ceiling frame due to an influence of foreign substances and the like.SOLUTION: A frame elevating/lowering device has a roller 41 which has an outer peripheral surface with first and second lift arms 33 and 34 from upper and lower sides; a drive mechanism 40 which makes the roller 41 come close to or separate from a coupling center C between the first and second lift arms 33 and 34, to relatively rotate the lift arms 33 and 34 in a standing direction or in a falling direction; a separation detection mechanism 50 which can detect that the first lift arm 33 separates from the outer peripheral surface of the roller 41; and changing means for changing the actuation of the drive mechanism 40 when the separation detection mechanism 50 detects that the first lift arm 33 separates from the outer peripheral surface of the roller 41.SELECTED DRAWING: Figure 6

    【課題】異物等の影響による天井架台の大きな下降を防止できるようにすることを目的とする。【解決手段】本発明の架台昇降装置は、第1、第2リフトアーム33,34によって外周面が上下から挟まれるローラ41と、ローラ41を第1、第2リフトアーム33,34の連結中心Cに対して接近、あるいは離隔させることで、第1、第2リフトアーム33,34を起立方向、あるいは倒伏方向に相対回動させる駆動機構40と、第1リフトアーム33がローラ41の外周面から離れたことを検出可能な離れ検知機構50と、離れ検知機構50により第1リフトアーム33がローラ41の外周面から離れたことが検出されたときに駆動機構40の作動を変更させる変更手段とを有する。【選択図】図6


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    Titel :

    FRAME ELEVATING/LOWERING DEVICE


    Weitere Titelangaben:

    架台昇降装置


    Beteiligte:
    KAWAKAMI WATARU (Autor:in) / YAMASHITA MAKOTO (Autor:in) / HIBI KAZUHIRO (Autor:in)

    Erscheinungsdatum :

    2017-03-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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



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