The invention provides a self-adaptive variable damping limiting folding device and system.The self-adaptive variable damping limiting folding device is characterized in that a first inner cylinder sealing ring and a second inner cylinder sealing ring are mounted in corresponding sealing ring mounting grooves in the two ends of an inner cylinder, and the inner cylinder is inserted into an outer cylinder; the outer cylinder, the inner cylinder, the first inner cylinder sealing ring and the second inner cylinder sealing ring form a closed hydraulic oil space; the connecting piece is inserted from one end of the outer cylinder and attached to the end face of the outer cylinder, the connecting piece and the outer cylinder are connected into a whole, the connecting piece is connected with the fixing piece at the other end of the outer cylinder so as to connect the outer cylinder and the inner cylinder together, and it is guaranteed that the inner cylinder and the outer cylinder can freely rotate; one end of the outer cylinder is provided with an oil injection hole and an oil discharge hole which are blocked by a sealing piece; the adjustable flow plug is inserted into the inner cylinder through a hole in the end face of the inner cylinder. The helicopter tail folding and limiting device has a passive self-adaptive variable damping limiting function, rotation folding exceeds a certain speed, damping self-adaptive automatic increase is achieved, additional control means are not needed, the mechanical limiting function can be achieved, the structure is simple, basic damping adjustment is convenient, and the folding and limiting problem of the helicopter tail is effectively solved.

    本发明提供一种自适应变阻尼限位折叠装置及系统,该装置中第一内筒密封圈和第二内筒密封圈安装在内筒的两端相应密封圈安装槽内,内筒插入外筒中;外筒、内筒以及第一内筒密封圈和第二内筒密封圈形成封闭的液压油的空间;连接件从外筒一端插入,其与外筒端面贴合,连接件与外筒连接为一体,连接件在外筒另一端连接固定件以将外筒和内筒连接在一起,保证内筒和外筒可相互自由旋转;外筒的一端开有注油和排油的孔,并用密封件封堵;可调节流塞通过内筒端面的孔插入内筒中。本发明具有被动自适应变阻尼限位功能,旋转折叠超过一定速度,阻尼自适应的自动增大,无需额外的控制手段,并可实现机械限位的功能,结构简单,基础阻尼调整方便,有效解决了直升机尾部折叠限位的问题。


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    Title :

    Self-adaptive variable damping limiting folding device and system


    Additional title:

    一种自适应变阻尼限位折叠装置及系统


    Contributors:
    CAO YUANBAO (author) / GUO JING (author) / LUO GUOREN (author) / WANG LIWEI (author) / CHEN BENYING (author)

    Publication date :

    2025-02-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16F SPRINGS , Federn / B64C AEROPLANES , Flugzeuge



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