The application involves a control device that aims to improve the fuel consumption in an operation of a crane. A control device of a hydraulic winch includes an engine (110), a hydraulic pump (131, 132), a hydraulic motor (135) which drives a winch drum, a winch manipulating member (213), an engine control unit (150, 110a) which controls a rotation speed of the engine, a winch load detector (154) which detects a load applied to the winch drum, and a motor capacity control unit (120) which controls a motor capacity of the hydraulic motor so as to decrease a motor capacity of the hydraulic motor in a fuel-saving operation mode to a motor capacity (Qm3) which is smaller than a motor capacity of the hydraulic motor in a normal operation mode. The engine control unit sets an upper limit value of the rotation speed of the engine in the fuel-saving operation mode to a value (N1 to N4) which is lower than a maximum rotation speed (Nmax) of the engine in the normal operation mode and corresponds to the load detected by the winch load detector.


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    Title :

    CONTROL DEVICE OF HYDRAULIC WINCH


    Additional title:

    STEUERUNGSVORRICHTUNG EINER HYDRAULISCHEN WINDE
    DISPOSITIF DE COMMANDE DE TREUIL HYDRAULIQUE


    Contributors:

    Publication date :

    2023-12-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66D Haspeln , CAPSTANS



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