The invention provides a constant tension hydraulic control system and a rotary drilling rig, the constant tension hydraulic control system comprises a hydraulic motor and a constant tension control valve bank, a port a and a port b of the hydraulic motor are respectively connected with a first pipeline and a second pipeline, one of the first pipeline and the second pipeline leads to a power unit, and the other leads to an oil tank; the constant tension control valve set comprises a first control valve, an inlet and an outlet of the first control valve are connected with a first pipeline and a second pipeline respectively, a remote control port of the first control valve is connected with a second control valve in series to adjust the opening pressure of a valve element of the first control valve, and therefore the high-pressure side pressure of the hydraulic motor can be limited. The tension of the steel wire rope driven by the hydraulic motor can be stabilized by remotely adjusting the opening pressure of the valve element of the first control valve according to needs, so that the steel wire rope is kept in a tensioned state, and damage to the steel wire rope and equipment connected with the steel wire rope due to over-unwinding of the steel wire rope is avoided.

    本申请提供一种恒张力液压控制系统和旋挖钻机,包括液压马达及恒张力控制阀组,其中,液压马达的a口和b口分别连接第一管路和第二管路,第一管路和第二管路其一者通往动力单元,其另一通往油箱;恒张力控制阀组包括第一控制阀,第一控制阀的进出口分别连接第一管路和第二管路,第一控制阀的远程控制口串接有第二控制阀以调定第一控制阀的阀芯开口压力,从而能够限制液压马达的高压侧压力。本申请可以根据需要远程调定第一控制阀的阀芯的开口压力来稳定液压马达驱动的钢丝绳的张力,使钢丝绳保持张紧状态,避免钢丝绳过放导致钢丝绳及与钢丝绳连接的设备损坏。


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    Titel :

    Constant-tension hydraulic control system and rotary drilling rig


    Weitere Titelangaben:

    恒张力液压控制系统和旋挖钻机


    Beteiligte:
    ZHAO QINGLONG (Autor:in) / NIU PINGFANG (Autor:in) / QI WENHU (Autor:in)

    Erscheinungsdatum :

    2023-06-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66D Haspeln , CAPSTANS / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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