The invention aims to provide a helicopter rotor wing variable-pitch rod which can reduce the dry weight of a helicopter. Another purpose of the invention is to provide a helicopter automatic inclinator which comprises the helicopter rotor wing variable-pitch rod. Another purpose of the invention is to provide a helicopter which comprises the automatic inclinator for the helicopter. In order to achieve the purpose, the helicopter rotor wing variable-pitch rod comprises an outer cylinder body, a piezoelectric unit, a piston head, a liquid storage part, a check valve, a reversing valve, an energy accumulator, a hydraulic cylinder and a connecting piece, wherein the piezoelectric unit, the piston head, the liquid storage part, the check valve are arranged in the outer cylinder body, wherein the upper portion and the lower portion of the cylinder barrel are communicated with the reversing valve through the first pipe fitting and the second pipe fitting respectively, hydraulic fluid flows to the two axial sides of the piston rod through the first pipe fitting and the second pipe fitting respectively, and the reversing valve controls the first pipe fitting and the second pipe fitting tobe communicated with or closed from the first cavity respectively, so that the piston rod is driven by the hydraulic fluid to move.

    本发明的一个目的在于提供一种直升机旋翼变距杆,能够实现减轻直升机干重。本发明的另一个目的在于提供一种直升机自动倾斜器,其包括前述直升机旋翼变距杆。本发明的又一个目的在于提供一种直升机,其包括前述直升机自动倾斜器。为实现前述一个目的的直升机旋翼变距杆,包括外筒体以及设置在外筒体内的压电单元、活塞头、储液部、止回阀、换向阀、蓄能器、液压缸以及连接件。其中,缸筒上部与下部分别通过第一管件与第二管件与换向阀相连通,液压液通过第一管件与第二管件分别流至活塞杆的轴向两侧,换向阀分别控制第一管件以及第二管件与第一腔体的导通或封闭,以使活塞杆由液压液驱动运动。


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    Titel :

    Helicopter rotor wing variable-pitch rod, helicopter automatic inclinator and helicopter


    Weitere Titelangaben:

    直升机旋翼变距杆、直升机自动倾斜器以及直升机


    Beteiligte:
    NI MING (Autor:in) / LI CHAOYANG (Autor:in) / ZHENG YIHUA (Autor:in)

    Erscheinungsdatum :

    2020-06-12


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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