To provide a moment limiter device for a boom work machine which prevents or suppresses the occurrence of overload work while activating performance of the boom work machine adequately.SOLUTION: A moment limiter device calculates a center coordinate of an outrigger float 16 upon ground state of each outrigger, sets rated load changeover lines La, Lb, Lc, Ld passing through the center coordinate and a boom turn center B0, and sets a rated load performance of a virtual area sandwiched between adjacent respective two pieces of rated load changeover lines based on combination whether each of the center coordinates of the outrigger float 16 of respective two pieces of outrigger adjacent to each other in a swing direction of a boom 5 is such a coordinate as to exceed overhang distance to be exceeded in order to exhibit the maximum rated load performance stipulated by rated load table judgement lines LwF, LwR, LwB, LwL. Therein, the rated load value with respect to a present work radius is calculated by using the rated load table corresponding to the rated load performance of the virtual area located on the 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の中心座標を演算し、こ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La、Lb、Lc、Ld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の中心座標のそれぞれが、定格荷重テーブル判定ラインLwF、LwR、LwB、LwLで規定された最大定格荷重性能を発揮するために越えるべき張出距離を越えた座標であるか否かの組み合わせに基づき、隣り合う各2本の定格荷重切替ラインに挟まれた仮想エリアの定格荷重性能を設定する。そして、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 FOR BOOM WORK MACHINE AND BOOM WORK MACHINE PROVIDED 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 :

    2019-06-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES




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