The invention discloses a variable pitch propeller blade and propeller shell connecting structure, which comprises a propeller shell, a first limiting flange, a second limiting flange and a connecting piece, the paddle root part is mounted in the paddle sleeve cuff, a first limiting boss and a second limiting boss are arranged on the paddle root part at an interval, and the paddle root part between the first limiting boss and the second limiting boss is a mounting shaft neck; the thrust ball bearing is arranged on the mounting shaft neck in a sleeving mode and abuts against one side of the first limiting flange; the mounting journal is sleeved with the tapered roller bearing, the tapered roller bearing is in close fit with one side of the second limiting boss, a locking cylinder is arranged on one side of a second outer ring of the tapered roller bearing, and the outer cylinder wall of the locking cylinder is a locking threaded surface; the locking nut is connected to the locking threaded face in a threaded mode, and one side of the locking nut is connected with the end face of the oar sleeve cuff in a pressing mode. The connecting structure is high in bearing capacity, high in reliability and suitable for aircrafts with the propeller diameter being 4 meters or above, the propeller bearing capacity is very large, and the service life is 10000 hours.

    本发明公开了一种可变距螺旋桨桨叶与桨壳连接结构,包括:桨壳,其上的桨袖袖口内具有第一限位凸缘;桨叶根部,其安装在桨袖袖口内,桨叶根部上间隔设有第一限位凸台和第二限位凸台,第一限位凸台和第二限位凸台之间的桨叶根部为安装轴颈;推力球轴承,其套设在安装轴颈上,且与第一限位凸缘的一侧抵接;圆锥滚子轴承,其套设在安装轴颈上,且与第二限位凸台一侧紧密配合,圆锥滚子轴承的第二外圈的一侧具有锁紧筒,锁紧筒的外筒壁为锁紧螺纹面;锁紧螺母,其螺接在锁紧螺纹面上,且锁紧螺母一侧与桨袖袖口的端面压接。该连接结构承载能力强、可靠性高,适用螺旋桨直径为4米以上,螺旋桨承载非常大,寿命为10000小时的飞机使用。


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    Title :

    Paddle and propeller shell connecting structure of variable pitch propeller


    Additional title:

    一种可变距螺旋桨桨叶与桨壳连接结构


    Contributors:
    WANG HUILING (author) / CAI MENG (author) / YAN WEI (author)

    Publication date :

    2024-05-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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