The invention relates to an engineering machinery control system, and provides an engineering machinery hydraulic control system which comprises an oil tank, an executive component, a first subsystem and a second subsystem, the first subsystem comprises a first variable pump and a first reversing valve which are used for being connected with the oil tank, and the first reversing valve is connected with the first variable pump and the executive component. The second subsystem comprises a second variable pump and a second reversing valve which are used for being connected with the oil tank, the second reversing valve is connected with the second variable pump and the execution element, and the second variable pump and the second reversing valve are both hydraulic elements with small flow. The second subsystem is made to have high flow control precision so that oil can be supplied when the executing element is in the micro-motion working condition state, the micro-motion performance can be met, when the executing element is in the high-speed working condition, the second subsystem and the large-flow first subsystem jointly supply oil, the large-flow requirement is met, and the control performance is comprehensively improved. The invention further provides engineering machinery.

    本发明涉及工程机械控制系统,提供了一种工程机械液压控制系统,包括油箱、执行元件、第一子系统和第二子系统,第一子系统包括用于连接油箱的第一变量泵和第一换向阀,第一换向阀分别与第一变量泵和执行元件连接,第二子系统包括用于连接油箱的第二变量泵和第二换向阀,第二换向阀分别与第二变量泵和执行元件,第二变量泵和第二换向阀均选用小流量的液压元件,不提高液压泵和阀的精度要求的情况下,使得第二子系统具有较高的流量控制精度,以在执行元件在微动工况状态进行油液供给,满足微动性能,执行元件在高速工况下,第二子系统和大流量的第一子系统共同供油,满足大流量需求,全面提升操控性能。本发明还提供一种工程机械。


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    Title :

    Engineering machinery hydraulic control system and engineering machinery


    Additional title:

    工程机械液压控制系统及工程机械


    Contributors:
    XU SHENGFU (author) / LI HUAIFU (author) / LUO XIANZHI (author) / HU TINGJIANG (author) / LIU JINGSONG (author)

    Publication date :

    2023-05-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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