To control a hydraulic cylinder pressure to an appropriate magnitude corresponding to the condition of an undulating member for restraining the backward rotation of the undulating member.SOLUTION: A backward rotation restraint device 20 comprises a hydraulic cylinder 35, a condition monitoring unit 71, and a cylinder pressure control unit 60. The hydraulic cylinder 35 exerts a force in a direction (D1) to rotate an undulating member (13) forward X1 on the undulating member (13). The condition monitoring unit 71 monitors the condition of the undulating member (13) including a constitution length and a derricking angle (θ). The cylinder pressure control unit 60 controls the pressure of the hydraulic cylinder 35 based on the condition of the undulating member (13) monitored by the condition monitoring unit 71.SELECTED DRAWING: Figure 2

    【課題】起伏部材の煽りを抑制するための油圧シリンダの圧力を、起伏部材の状態に対応した適切な大きさに制御する。【解決手段】煽り抑制装置20は、油圧シリンダ35と、状態監視部71と、シリンダ圧力制御部60と、を備える。油圧シリンダ35は、起伏部材(13)を前側X1に回転させる向き(D1)の力を起伏部材(13)に作用させる。状態監視部71は、構成長および起伏角度(θ)を含む起伏部材(13)の状態を監視する。シリンダ圧力制御部60は、状態監視部71に監視された起伏部材(13)の状態に基づいて、油圧シリンダ35の圧力を制御する。【選択図】図2


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    Title :

    BACKWARD ROTATION RESTRAINT DEVICE


    Additional title:

    煽り抑制装置


    Contributors:

    Publication date :

    2023-04-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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