The invention relates to a hydraulic power unit for an electro-hydraulic point switch. The hydraulic power unit is composed of a pump valve assembly, a coupler and a motor. A motor in the hydraulic power unit is connected with the pump valve assembly through the coupler, the pump valve assembly internally comprises an oil pump, a box body, an oil inlet assembly, an oil outlet assembly, an overflow valve assembly, an oil injection filtering device, an oil scale and a reversing valve, a three-position four-way valve is adopted as a reversing valve, when the reversing valve is located at the middle position, an oil way is in a conducting state, and the oil pump adopts a one-way oil outlet mode. The structure is compact, simple and reliable, high integration of the motor and a pump valve set is achieved, the overall height and length are small, and field application is facilitated.

    本发明涉及一种电液转辙机用液压动力单元,所述液压动力单元由泵阀组件、联轴器和电机构成。所述的液压动力单元内电机通过联轴器与泵阀组件联接;所述泵阀组件内包括油泵、箱体、进油组件、出油组件、溢流阀组件、注油过滤装置、油标尺和换向阀;所述换向阀采用三位四通阀,换向阀处于中间位时,油路处于导通状态;所述油泵采用单向出油方式。本发明结构紧凑、简单可靠,实现了电机和泵阀组的高度集成化,整体的高度、长度尺寸较小,便于现场的应用。


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    Title :

    Hydraulic power unit for electro-hydraulic point switch


    Additional title:

    一种电液转辙机用液压动力单元


    Contributors:
    XU KEZHENG (author) / YANG SHUREN (author) / LIU SHANGCHAO (author) / HUANG TIANXIN (author) / SUN XIAOYONG (author) / LIU ZHENHUA (author) / CHEN HAO (author) / ZHANG LIANG (author) / XU MING (author)

    Publication date :

    2021-04-30


    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 / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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