The invention discloses a helicopter tail propeller pitch changing mechanism, which relates to the technical field of helicopter tail propellers. The mechanism comprises a helicopter body and a helicopter tail beam, a damping mechanism is arranged at the bottom of the helicopter body, a hollow mounting column is mounted on one side of the helicopter tail beam, a threaded rod penetrates through and is rotationally connected to the side wall of the hollow mounting column, and a first driven oblique bevel gear is fixedly connected to one end of the threaded rod; and the first driven oblique bevel gear is located in the hollow mounting column, and the surface of the threaded rod is sleeved with a tail rotor. The tail rotor can be driven to stretch out and draw back through forward and reverse rotation of the threaded rod, the effect of adjusting the distance of the tail rotor can be achieved, the length of the tail rotor on the helicopter body can be conveniently adjusted, the tensile force of the tail rotor can be conveniently adjusted, and the change difficulty of the course of the helicopter body is effectively reduced.

    本发明公开了一种直升机尾浆变距机构,涉及直升机尾浆技术领域。本发明包括直升机本体和直升机尾梁,直升机本体的底部设置有减震机构,直升机尾梁的一侧安装有空心安装柱,空心安装柱的侧壁贯穿并转动连接有螺纹杆,螺纹杆的一端固定连接有第一从动斜锥齿轮,且第一从动斜锥齿轮位于空心安装柱内部,螺纹杆的表面套设有尾桨。本发明通过螺纹杆的正反转可以带动尾桨伸缩,即可以达到对尾桨调距的效果,方便了直升机本体上尾桨长度的调整,即可以方便调整尾桨拉力的大小,有效地降低了直升机本体航向的改变难度。


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    Title :

    Helicopter tail propeller pitch changing mechanism


    Additional title:

    一种直升机尾浆变距机构


    Contributors:
    CHEN HONGYU (author) / WEI HONGBO (author) / YUAN BIAO (author) / WU JIANG (author) / ZHANG YUHAO (author)

    Publication date :

    2021-07-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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