The invention relates to the technical field of hydraulic control of shear fork type aerial work platforms, in particular to a steering walking hydraulic control system of a shear fork type aerial work platform. The steering walking hydraulic control system comprises an overflow valve, a lifting pressure limiting valve, a lifting reversing assembly, a differential pressure valve assembly, a steering pressure limiting valve, a steering feedback valve assembly, a back pressure valve, a walking reversing valve assembly, a self-adaptive balance control valve, an oil supplementing valve, a switching valve, a hydraulic pump, an oil tank, a CSE lifting oil cylinder, a steering oil cylinder, a brake and a walking motor. According to the invention, a integrated valve rear load feedback steering priority system is designed, constant-flow output is achieved, and the influence of load pressure is avoided; the problems that an original system is insensitive in reaction, large in impact, abnormal in composite action and large in energy consumption are solved; an integrated self-adaptive balance control valve achieves floating self-adaptive flow output in the walking process, and meanwhile certain pressure is built in front of the integrated self-adaptive balance control valve and used for automatically starting service braking; and by combining with the oil supplementing valve, the problems of downhill stall, uncontrollability and abnormal sound of a single-side motor are solved.

    本发明涉及剪叉式高空作业平台液压控制技术领域,尤其为一种剪叉式高空作业平台转向行走液压控制系统,包括溢流阀,举升限压阀、举升换向总成、压差阀总成、转向限压阀、转向反馈阀总成、背压阀、行走换向阀总成、自适应平衡控制阀、补油阀、切换阀、液压泵、油箱、CSE举升油缸、转向油缸、制动器和行走马达,本发明通过设计集成阀后负载反馈转向优先系统,恒定流量输出,不受载荷压力影响;解决了原有系统反应不灵敏、冲击大、复合动作异响、能耗损耗大的问题;集成自适应平衡控制阀实现行走过程浮动自适应的流量输出,同时实现阀前建立一定压力,用于自动打开行车制动;结合补油阀,解决了下坡失速,不受控、单侧马达异响的问题。


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    Titel :

    Steering walking hydraulic control system of shear fork type aerial work platform


    Weitere Titelangaben:

    一种剪叉式高空作业平台转向行走液压控制系统


    Beteiligte:
    DING JIAN (Autor:in)

    Erscheinungsdatum :

    2021-06-15


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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