The invention discloses a connecting structure of a propeller blade and a propeller hub, and relates to the technical field of connecting structures, a centripetal thrust ball bearing is installed between the outer wall of a propeller root and the inner wall of the propeller hub, a tapered roller bearing is installed on the periphery of the propeller blade and is close to a cuff of the propeller hub, and a limiting maintaining assembly is located between the propeller hub and the propeller blade. The limiting maintaining assembly is located between the radial thrust ball bearing and the tapered roller bearing, a pressing oil cavity is formed between the limiting maintaining assembly and the inner wall of the propeller hub, and the pre-tightening element can be detachably installed on an outer ring of the tapered roller bearing; after the centripetal thrust ball bearing is installed, high-pressure oil is introduced into the pressing oil cavity so that the tapered roller bearing outer ring can tend to move in the direction away from the propeller root, due to the fact that the tapered roller bearing has a taper angle, the tapered roller bearing outer ring expands in the radial direction, at the moment, the pre-tightening element is tightened and fixed, and gaps between the propeller blades and the propeller hub can be eliminated. According to the invention, accurate positioning and reliable connection of the propeller blades and the propeller hub can be realized.
本发明公开了一种螺旋桨桨叶与桨毂的连接结构,涉及连接结构技术领域,向心推力球轴承安装于桨根外壁与桨毂内壁之间,圆锥滚子轴承安装于桨叶外周,并靠近桨毂袖口设置,限位保持组件位于桨毂和桨叶之间,且限位保持组件位于向心推力球轴承和圆锥滚子轴承之间,限位保持组件与桨毂内壁之间形成打压油腔,预紧元件能够拆卸地安装于圆锥滚子轴承的外环;在完成向心推力球轴承的安装后,向打压油腔内通入高压油能够给圆锥滚子轴承外环一远离桨根方向的运动趋势,由于圆锥滚子轴承存在锥角,使圆锥滚子轴承外环径向膨胀,此时拧紧预紧元件固定,可消除桨叶与桨毂之间的间隙。本发明能够实现螺旋桨桨叶与桨毂的准确定位及可靠连接。
Connecting structure of propeller blade and propeller hub
一种螺旋桨桨叶与桨毂的连接结构
2024-09-27
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Connecting structure of variable pitch propeller blade and propeller hub
European Patent Office | 2023
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