The invention discloses a hydraulic resistance braking rotation system. The system comprises a motor, a reversing valve, a through flow control valve and a proportional operating valve, wherein the motor includes a first drive oil port and a second drive oil port; the reversing valve is connected among a main oil inlet, a main oil return port, the first drive oil port and the second drive oil port, and at a third valve position of the reversing valve, the main oil inlet is connected with the main oil return port; the through flow control valve is connected between the first drive oil port andthe second drive oil port, and includes a throttling port, a throttling control port and a first reset piece; the throttling port is used for controlling connection and disconnection between the firstdrive oil port and the second drive oil port and a size of a connection opening during connection, the throttling control port is used for introducing pressure oil to reduce the size of the throttling port of the through flow control valve, and the throttling control port is connected with the main oil inlet; and the proportional operating valve is connected with the throttling control port and is configured to output pressure oil of which pressure is proportionally controlled to the throttling control port so as to reduce the size of the throttling port proportionally.

    本发明公开一种本发明公开一种液阻制动回转系统,包括:马达,包括第一驱动油口和第二驱动油口;换向阀,连接在主进油口、主回油口与第一驱动油口和第二驱动油口之间,在换向阀的第三阀位,主进油口与主回油口连接;通流控制阀,连接在第一驱动油口和第二驱动油口之间,包括节流口、节流控制口和第一复位件,节流口用于控制第一驱动油口和第二驱动油口之间的通断和连通时连通开口的大小,节流控制口用于通入压力油以减小通流控制阀的节流口的大小,节流控制口与主进油口连接;比例操作阀,和节流控制口连接,被配置为向节流控制口输出压力受比例控制的压力油以比例减小节流口的大小。


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    Title :

    Hydraulic resistance braking rotation system


    Additional title:

    液阻制动回转系统


    Contributors:
    ZHOU BIN (author) / HU XIAODONG (author) / JIAO GUOWANG (author) / LI CHAO (author)

    Publication date :

    2020-04-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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