To provide an unloader capable of performing the transportation and the like of a grab bucket with high accuracy and a control method of the unloader.SOLUTION: The torque generated in a motor M is measured by a torque measurement unit 15, the rotation speed commanded to the motor M from a calculation mechanism 13 is reduced at higher rate as an absolute value of an actual torque acquired by the torque measurement unit 15 is higher when the motor M winds a rope, and the rotation speed commanded to the motor M from the calculation mechanism 13 is increased at a larger rate as the absolute value of the actual torque is larger when the rope is delivered by the motor M.SELECTED DRAWING: Figure 11

    【課題】グラブバケットの移動等を高い精度で行えるアンローダおよびアンローダの制御方法を提供する。【解決手段】モータMに発生したトルクをトルク測定部15で測定して、モータMがロープの巻き取りを行っている際にはトルク測定部15により取得した実トルクの絶対値が大きいほど演算機構13からモータMに指令される回転速度を大きな割合で減少させて、モータMがロープの繰り出しを行っている際には実トルクの絶対値が大きいほど演算機構13からモータMに指令される回転速度を大きな割合で増加させる。【選択図】図11


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    Title :

    UNLOADER AND CONTROL METHOD OF UNLOADER


    Additional title:

    アンローダおよびアンローダの制御方法


    Contributors:
    OI KOJI (author) / EBIHARA KENJI (author)

    Publication date :

    2019-07-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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