The invention provides a hydraulic jack for an aircraft. The hydraulic jack for the aircraft solves the problems that hydraulic elements are large is number, and connection pipelines are complex in the prior art. The hydraulic jack for the aircraft comprises a frame assembly, a ground foot supporting assembly, a hydraulic cylinder and a hydraulic operation unit, wherein the hydraulic operation unit comprises an oil tank, a pump and a valve sliding block assembly, the valve sliding block assembly comprises a valve block body, a safety valve assembly, a one-way valve assembly and a manual valve,a first flow passage, a second flow passage, a third flow passage, a safety valve cavity and a one-way valve cavity are arranged in the valve block body, an inlet of the first flow passage is connected with an oil outlet of the oil tank, an outlet of the first flow passage is connected with an inlet of the second flow passage through the pump, an outlet of the second flow passage is connected with an inlet of the third flow passage through the one-way valve cavity, the third flow passage is provided with two outlets, one outlet is connected with an oil return opening of the oil tank through the manual valve, the other outlet is connected with the hydraulic cylinder, the first flow passage and the second flow passage are connected through the safety valve cavity, and the safety valve assembly and the one-way valve assembly are arranged in the safety valve cavity and the one-way valve cavity respectively.

    本发明提供了一种飞机用液压千斤顶,解决了现有液压元件多、连接管路复杂的问题。其包括框架组件、地脚支撑组件、液压缸以及液压操作单元;液压操作单元包括油箱、泵以及阀滑块组件;阀滑块组件包括阀块本体、安全阀组件、单向阀组件和手动阀;阀块本体内设有第一流道、第二流道、第三流道,安全阀腔体和单向阀腔体;第一流道的入口与油箱的出油口相连,第一流道的出口通过泵与第二流道的入口相连,第二流道的出口通过单向阀腔体与第三流道的入口相连,第三流道设有两个出口,一个出口通过手动阀与油箱的回油口相连,另一个出口与液压缸相连;第一流道与第二流道通过安全阀腔体相连;安全阀组件和单向阀组件分别设置在安全阀腔体和单向阀腔体内。


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    Title :

    Hydraulic jack for aircraft


    Additional title:

    一种飞机用液压千斤顶


    Contributors:
    QIAO XU (author) / AN WEI (author) / FU SHAOLI (author) / QI XIAORONG (author) / GONG KE (author)

    Publication date :

    2020-05-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    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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