The dual-mode hydraulic servo actuator comprises an oil inlet pipeline and an oil return pipeline, the oil inlet pipeline is shunted to a servo valve and a first-stage modal selection valve, and the oil return pipeline is connected to a variable damping valve; the second-stage modal selection valve is connected with the first-stage modal selection valve, the servo valve and the variable damping valve; and the actuating cylinder is connected with the second-stage modal selection valve and performs linear output when the hydraulic servo actuator is in the first mode. The hydraulic servo actuator further comprises a pressure relief unit, when the hydraulic servo actuator is in the second mode, the actuator cylinder is connected with the variable damping valve/pressure relief unit, and the pressure relief unit provides a maintenance interface and provides a release function for releasing damping force, so that the actuator cylinder and the oil return pipeline are conducted without damping. According to the hydraulic servo actuator, the problem that operation is difficult due to damping force during ground maintenance is solved, the operability and convenience of maintenance and inspection are remarkably improved, and the economical efficiency of aircraft operation is improved.

    本发明涉及一种双模式液压伺服作动器,包括:进油管线和回油管线,进油管线分流至伺服阀和第一级模态选择阀,回油管路连接到可变阻尼阀;与第一级模态选择阀、伺服阀和可变阻尼阀相连的第二级模态选择阀;以及与第二级模态选择阀相连的作动筒,其在液压伺服作动器处于第一模式时进行线性输出。液压伺服作动器还包括释压单元,当液压伺服作动器处于第二模式时,作动筒与可变阻尼阀/释压单元相连,释压单元提供维护接口并提供释放阻尼力的释放功能,以使作动筒与回油管线之间无阻尼导通。上述液压伺服作动器解决了地面维护时阻尼力导致的操作困难的问题,显著改善了维护检查的可操作性和便利性,并提高了飞行器运营的经济性。


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    Title :

    Dual-mode hydraulic servo actuator


    Additional title:

    双模式液压伺服作动器


    Contributors:
    YU XUEYANG (author) / HUANG JIAN (author) / WU YUZHEN (author)

    Publication date :

    2023-05-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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