The invention relates to the technical field of undercarriages, and discloses a double-actuator-cylinder retracting and releasing system and method for retracting and releasing an undercarriage, the double-actuator-cylinder retracting and releasing system comprises a driving cylinder, a follow-up cylinder and a control assembly, the control assembly comprises a guide pipe assembly and a one-way valve body, and the follow-up cylinder is provided with a follow-up cylinder extending lock assembly; the preset unlocking oil pressure A of the one-way valve body is larger than the preset unlocking oil pressure B of the follow-up cylinder extending lock assembly. The follow-up cylinder II is arranged to assist the driving cylinder I to stretch out and draw back, the supporting strength is improved, and occupied space is reduced; by arranging the one-way valve body 4, oil path crosslinking between the driving cylinder I and the follow-up cylinder II can be achieved, so that the unlocking sequence of the driving cylinder I and the follow-up cylinder II can be controlled, the situation that the extending sequence of the driving cylinder I and the follow-up cylinder II is disordered is avoided, the control difficulty is lowered, and the fault rate of the hydraulic control system is lowered.

    本发明涉及飞机起落架技术领域,公开了一种用于起落架收放的双作动筒收放系统及收放方法,包括主动筒、随动筒、控制组件,控制组件包括导管组件、单向阀体,所述随动筒上设置有随动筒伸出锁组件,所述单向阀体的解锁预设油压A大于所述随动筒伸出锁组件的解锁预设油压B。本发明通过设置随动筒Ⅱ来辅助主动筒Ⅰ进行伸缩,提高支撑强度、减小空间占用;通过设置单向阀体4,能够实现主动筒Ⅰ、随动筒Ⅱ之间油路交联,以此能够控制主动筒Ⅰ与随动筒Ⅱ的解锁顺序,避免出现主动筒Ⅰ、随动筒Ⅱ伸出顺序混乱的情况,降低控制难度,降低液压控制系统的故障率。


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    Title :

    Double-actuator-cylinder folding and unfolding system for folding and unfolding undercarriage and folding and unfolding method


    Additional title:

    一种用于起落架收放的双作动筒收放系统及收放方法


    Contributors:
    YAN XUQIAN (author) / WU TONG (author) / XIONG HAOYU (author)

    Publication date :

    2025-03-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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