PROBLEM TO BE SOLVED: To realize a smooth elevating operation of a boom, and to further reduce torsional loads to a boom structure material when the elevating operation is executed by one electric cylinder when one of two electric cylinders fails in corrugation means of the boom using the two electric cylinders.SOLUTION: There is provided an elevation mechanism of a boom for driving the boom 2 by elevation by coupling a pair of electric cylinders 3, 4 to be tuned (synchronized) with each other arranged in parallel in a width direction of the boom 2 between an airframe 1 and the boom 2 elevatably supported to the airframe 1, tips of rods 33, 43 in the respective electric cylinders 3, 4 installed in the airframe 1 are coupled to the boom 2 via an equalizer plate 6.SELECTED DRAWING: Figure 2

    【課題】2本の電動シリンダを用いたブームの起伏手段において、ブームのスムーズな俯仰動作を実現できるようにすること、更には2本の電動シリンダの内の一方が故障した場合に1本の電動シリンダによって俯仰動作を実施する際のブーム構造材へのねじり負荷を少なくすることを課題とする。【解決手段】機体1と機体1に俯仰可能に支持されたブーム2との間にブーム2の幅方向に並列配置した互いに同調(同期)する一対の電動シリンダ3,4を連結してブーム2を俯仰駆動するブームの俯仰装置であって、機体1に設置した各電動シリンダ3,4におけるロッド33,43の先端をイコライザプレート6を介してブーム2に連結した。【選択図】図2


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    Title :

    ELEVATION MECHANISM OF BOOM


    Additional title:

    ブームの俯仰装置


    Contributors:

    Publication date :

    2016-05-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS , Transport- oder Lagervorrichtungen, z.B. Förderer zum Laden oder Abladen / B66C Krane , CRANES



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