To provide a moment limiter device for boom work device that prevents or suppresses the occurrence of overload work while fully utilizing the performance of the boom work device.SOLUTION: A moment limiter device sets rated load switching lines that pass through center coordinates of outrigger floats 16 and a boom turning center B0, respectively when each outrigger is in contact with the ground, sets a rated load performance to a maximum rated load performance when determining that the center coordinates of the outrigger floats 16 of each two of the neighboring outriggers in a turning direction of the boom 5 are both beyond an overhang distance, sets the rated load performance to a minimum rated load performance when determining that at least one of the center coordinates of the outrigger float 16 of each two of the outriggers does not exceed the overhang distance, and calculates a rated load value for a current working radius using a rated load table corresponding to the rated load performance in a virtual area on a tip direction side of the boom 5.SELECTED DRAWING: Figure 7

    【課題】ブーム作業機の性能を十分に活かしつつ過負荷作業の発生を防止又は抑制するブーム作業機用モーメントリミッタ装置を提供する。【解決手段】モーメントリミッタ装置は、各アウトリガの接地状態時のアウトリガフロート16の中心座標とブーム旋回中心B0とを通る定格荷重切替ラインを設定し、ブーム5の旋回方向に隣り合う各2本のアウトリガのアウトリガフロート16の中心座標が共に張出距離を越えた座標であると判定したときに定格荷重性能を最大定格荷重性能に設定し、各2本のアウトリガのアウトリガフロート16の中心座標のうち少なくとも一方が張出距離を越えていない座標であると判定したときに定格荷重性能を最小定格荷重性能に設定し、ブーム5の先端方向側にある仮想エリアの定格荷重性能に対応する定格荷重テーブルを用いて現在の作業半径に対する定格荷重値を算出する。【選択図】図7


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    Title :

    MOMENT LIMITER DEVICE FOR BOOM WORK MACHINE, AND BOOM WORK MACHINE EQUIPPED WITH THE SAME


    Additional title:

    ブーム作業機用モーメントリミッタ装置及びこれを備えたブーム作業機


    Contributors:

    Publication date :

    2022-05-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES




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