The embodiment of the invention provides a helicopter blade folding mechanism, comprising: a blade body, one end of which is provided with a first through hole and a second through hole; a paddle clamp which is configured to clamp one end of the paddle body and is provided with a first clamping groove, a third through hole and a fourth through hole; a connecting bolt which penetrates through the second through hole and the fourth through hole and is used for connecting the paddle body and the paddle clamp; a blade pin which penetrates through the first through hole and the third through hole, and one end of the blade pin is provided with a shaft shoulder and a first circumferential groove; a check ring which is nested in the first circumferential groove; and a pendulum bob, wherein a fifth through hole is formed in the first end of the pendulum bob, the pendulum bob is arranged between the shaft shoulder and the check ring in a sleeving mode through the fifth through hole, the second end of the pendulum bob is matched with the first clamping groove, and the pendulum bob is configured to generate centrifugal force in the continuous rotation process of the paddle body so that the second end of the pendulum bob can be clamped in the first clamping groove all the time. By applying the helicopter blade folding mechanism provided by the embodiment of the invention, the convenience of folding and unfolding installation of the blades can be improved.

    本申请实施例提供了一种直升机桨叶折叠机构,包括:桨叶本体,桨叶本体的一端设置有第一通孔和第二通孔;桨夹,桨夹配置为夹持桨叶本体的一端且设置有第一卡槽、第三通孔、第四通孔;连接螺栓,连接螺栓穿设于第二通孔和第四通孔,用于连接桨叶本体与桨夹;桨叶销,桨叶销穿设于第一通孔和第三通孔且其一端设置有轴肩和第一周向凹槽;挡圈,挡圈嵌套于第一周向凹槽;摆锤,摆锤的第一端设置有第五通孔,摆锤通过第五通孔套设于轴肩与挡圈之间,摆锤的第二端与第一卡槽相适配,摆锤配置为在桨叶本体连续旋转过程中产生离心力以使其第二端始终卡于第一卡槽的内部。应用本申请实施例提供的直升机桨叶折叠机构,可以提高桨叶折叠及展开安装的便利性。


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    Title :

    Helicopter blade folding mechanism


    Additional title:

    直升机桨叶折叠机构


    Contributors:
    BAI XUEGANG (author) / SUN TAO (author) / ZHANG RUIFANG (author) / TIAN GANGYIN (author)

    Publication date :

    2022-02-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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