The helicopter rotor head structure comprises a propeller hub, a propeller clamp, a bearing and a variable pitch mechanism, the propeller hub is arranged at the top of a rotor main shaft, a connecting shaft is arranged in the propeller hub, the end of the connecting shaft extends out of the propeller hub, the end of the connecting shaft is sleeved with the bearing, and the end, away from blades, of the propeller clamp is sleeved with the bearing and rotationally connected with the connecting shaft; the bearings comprise an angular contact bearing, a thrust roller bearing and a deep groove ball bearing, and the angular contact bearing, the thrust roller bearing and the deep groove ball bearing are sequentially arranged in the length direction of the connecting shaft; and the variable-pitch mechanism is arranged on the rotor wing main shaft in a sleeving manner and is connected with the propeller clamp. The bearing has the technical effects that the angular contact bearing, the thrust roller bearing and the deep groove ball bearing are combined for use, so that the axial and radial bearing capacities of the whole bearing are obviously improved, the bearing is not easy to damage, and the whole service life is longer; and by arranging the variable pitch mechanism, the angle of the paddle can be flexibly adjusted, so that the lift force and the resistance generated by the rotor wing are adjusted.
本发明公开了一种直升机旋翼头结构,包括桨毂、桨夹、轴承和变距机构,桨毂设置旋翼主轴顶部,桨毂内设有连接轴,连接轴的端部延伸至桨毂外,轴承套设在连接轴的端部,桨夹背离桨叶的一端套设在轴承外,且与连接轴转动连接;轴承包括角接触轴承、推力滚子轴承和深沟球轴承,角接触轴承、推力滚子轴承和深沟球轴承依次沿连接轴的长度方向设置;变距机构套设在旋翼主轴上,变距机构与桨夹连接。达到的技术效果为:角接触轴承、推力滚子轴承和深沟球轴承组合使用,显著提升了整个轴承的轴向和径向承载能力,从而使其不易损坏,整体使用寿命更长;通过设置变距机构,能够灵活调节桨叶的角度,从而调节旋翼产生的升力和阻力。
Helicopter rotor head structure
一种直升机旋翼头结构
02.05.2025
Patent
Elektronische Ressource
Chinesisch
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