The invention discloses a jib luffing hydraulic control module, a hydraulic control system and a crane. A mechanical operation type multi-way reversing valve and a pressure reducing valve are used in a linkage mode to form a linkage pressure reducing module, a valve rod of the mechanical operation type multi-way reversing valve can drive a valve rod of the pressure reducing valve to move synchronously when being switched from an amplitude starting working position to an amplitude falling working position, and therefore the valve rod of the mechanical operation type multi-way reversing valve can be controlled to move, and the amplitude falling working position can be controlled to move synchronously. And controllable pressure output of the pressure reducing valve is obtained. According to the luffing hydraulic control module for the suspension arm, the mechanical operation type multi-way reversing valve and the pressure reducing valve are used in cooperation, the problem that the mechanical operation type multi-way reversing valve cannot be used in cooperation with the pressure reducing valve in the field of cranes is solved, effective and accurate control over the opening pressure of a self-weight falling type balance valve is achieved, and the working efficiency is improved. The problem that the suspension arm shakes due to frequent opening and closing of the balance valve under the amplitude falling working condition is solved, and the stability of a suspension arm control system is improved.

    本发明公开一种吊臂变幅液压控制模块、液压控制系统及起重机。其将机械操纵式多路换向阀与减压阀联动使用,形成一联动减压模块,其中,机械操纵式多路换向阀的阀杆在由起幅工作位向落幅工作位切换时,能够带动减压阀的阀杆同步移动,从而可以通过控制机械操纵式多路换向阀阀杆位移,获得一个可控的减压阀压力输出。本发明的吊臂变幅液压控制模块通过机械操纵式多路换向阀与减压阀的配合使用,不仅解决了起重机领域,机械操纵式多路换向阀无法配合减压阀使用的难题,而且实现了对自重下落式平衡阀开口压力的有效精准控制,克服了落幅工况时,平衡阀频繁启闭导致吊臂抖动的问题,使吊臂控制系统稳定性提升。


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    Titel :

    Suspension arm variable amplitude hydraulic control module, hydraulic control system and crane


    Weitere Titelangaben:

    吊臂变幅液压控制模块、液压控制系统及起重机


    Beteiligte:
    PAN JIANFENG (Autor:in) / ZHU YONGQUAN (Autor:in) / CHEN LEI (Autor:in) / XU HAIDONG (Autor:in) / ZHANG DAWEI (Autor:in)

    Erscheinungsdatum :

    2023-07-07


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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