The hydraulic system comprises the constant displacement pump, the variable displacement pump, a valve group I, a valve group II and a valve group III, the valve group I comprises a three-way flow valve, a shuttle valve and an electromagnetic directional valve I, and an IP port of the valve group is connected with a P1 port oil way through a one-way valve; a port 1 of the three-way flow valve is connected to an oil way of a port P1 of the valve group I, a port 2 is connected with a port T, a port 3 is connected with a port 3 of the electromagnetic reversing valve I, a port 1 of the flow valve is connected with a port 2 of the shuttle valve, a port 1 of the electromagnetic reversing valve I is connected with a port LS of the valve group I, a port 2 is connected with a port 2 of the shuttle valve, a port 1 of the shuttle valve is connected with a port LS2 of the valve group I, and a port 3 is connected with a port LS1 of the valve group I. The valve group II comprises a plurality of proportional reversing valves II which are connected in parallel; and the valve group III comprises a plurality of proportional reversing valves II which are connected in parallel. The fixed displacement pump and the variable displacement pump are arranged in the hydraulic system, can be matched with various power sources and can be flexibly switched, the adaptive capacity of the overhead working truck is improved, and the overhead working truck is energy-saving, environment-friendly and convenient to match.

    本发明公开了一种自适应变量泵和定量泵的液压系统,包括定量泵、变量泵、阀组I、阀组II、阀组III,阀组I包括三通流量阀、梭阀和电磁换向阀I,阀组IP口与P1口油路通过单向阀连接;三通流量阀1口接在阀组I的P1口的油路上,2口与T口连接,3口接电磁换向阀I的3口,流量阀的1口接梭阀的2口,电磁换向阀I的1口接阀组I的LS口,2口接梭阀的2口,梭阀的1口接阀组I的LS2口,3口接阀组I的LS1口。阀组II包括多个并联的比例换向阀II,阀组III包括多个并联的比例换向阀II。本发明在液压系统中配备定量泵和变量泵,可匹配各种动力源,且可灵活切换,提高了高空作业车的适应能力,节能环保,方便匹配。


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    Titel :

    Hydraulic system of self-adaptive variable pump and constant displacement pump


    Weitere Titelangaben:

    一种自适应变量泵和定量泵的液压系统


    Beteiligte:
    GENG YANJIE (Autor:in) / WANG TENG (Autor:in) / LI JINGHE (Autor:in)

    Erscheinungsdatum :

    2023-12-12


    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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