The invention belongs to the field of oil pumps, and discloses a combined oil pump with an automatic reversing function. The combined oil pump comprises a manual pump assembly and an electric pump, wherein the manual pump assembly is connected with the electric pump; the combined oil pump further comprises an electromagnetic directional valve and an oil cylinder; the electromagnetic directional valve is provided with a first connector, a second connector, a third connector and a fourth connector; a lifting oil opening and an oil return opening are formed in the manual pump assembly; the first connector is connected with the lifting oil opening; the second connector is connected with the oil return opening;the oil cylinder is provided with a rodless cavity and a rod cavity; the third connector is connected with the rodless cavity; and the fourth connector is connected with the rod cavity. When the electromagnetic directional valve is not electrified, the first connector is communicated with the third connector, and the second connector is communicated with the fourth connector; when the electromagnetic directional valve is electrified, the first connector is communicated with the fourth connector, and the second connector is communicated with the third connector. According to the combined oil pump, manual reversing is not needed, the electromagnetic directional valve automatically reverses, and the safety is improved.

    本发明涉及油泵领域,公开了一种具有自动换向功能的组合油泵,包括手动泵组件和电动泵,手动泵组件和电动泵连接,还包括电磁换向阀和油缸,电磁换向阀上设有第一接口、第二接口、第三接口和第四接口,手动泵组件上设有举升油口和回油口,第一接口和举升油口连接,第二接口和回油口连接,油缸上设有无杆腔和有杆腔,第三接口和无杆腔连接,第四接口和有杆腔连接。当电磁换向阀未通电时,第一接口和第三接口连通,第二接口和第四接口连通;当电磁换向阀通电时,第一接口和第四接口连通,第二接口和第三接口连通。本发明具有无需手动换向、电磁换向阀自动换向、提升安全性的优点。


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    Title :

    Combined oil pump with automatic reversing function


    Additional title:

    一种具有自动换向功能的组合油泵


    Contributors:
    WU ZHUOQUAN (author) / SHAO JINLONG (author) / LIU XIANZHEN (author) / HU ZHENGZHONG (author) / QIU WENHUA (author)

    Publication date :

    2022-02-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / B62D MOTOR VEHICLES , Motorfahrzeuge



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