The invention discloses a coaxial contra-rotating type propeller pitch-varying device. A pitch-varying rod penetrates in a center hole of an inner shaft of a speed reducer, the front end of the pitch-varying rod is fixed together with a front poking sleeve, each poking fork on the front poking sleeve is fixed on a front eccentric pin eccentrically fixed on each front paddle by virtue of a bearing; a pin is inserted and fixedly arranged on the pitch-varying just facing a rear poking sleeve, the pin penetrates in a strip-shaped hole of the inner shaft of the speed reducer along an axial direction; two ends of the pin are respectively fixed on an inner sleeve of a high-speed bearing, an outer sleeve of the high-speed bearing is fixed on the inner wall of the rear poking sleeve; each poking fork on the rear poking sleeve is fixed on a rear eccentric pin eccentrically fixed on each eccentric paddle by virtue of a bearing; the rear end of the pitch-varying rod is fixed on an outer sleeve of a dynamic-static conversion bearing, an inner sleeve of the dynamic-static conversion bearing is fixed on a fork lug inserted in a center hole of the pitch-varying rod, and the other end of the fork lug is fixed on a linear movement source. The coaxial contra-rotating type propeller pitch-varying device can be used for realizing synchronous pitching varying of paddles of two propellers, and is simple in structure, accurate in transmitting movement, and high in response speed.


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    Title :

    Coaxial contra-rotating type propeller pitch-varying device


    Contributors:
    ZAN BINGHE (author) / LI ZHONGBO (author) / WANG QUN (author) / ZHAO LING (author)

    Publication date :

    2015-04-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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