The invention relates to the technical field of aircrafts, in particular to a rotor wing speed reducer and a helicopter. The rotor wing speed reduction device comprises a rotor wing assembly, a power input assembly, a tail transmission assembly and a speed reduction assembly, the rotor wing assembly comprises a rotor wing shaft, the speed reduction assembly comprises a first non-orthogonal face gear and a second non-orthogonal face gear which are arranged on the rotor wing shaft, and the tooth surface diameter of the first non-orthogonal face gear is smaller than that of the second non-orthogonal face gear; the power input assembly comprises a first cylindrical gear connected with the second non-orthogonal face gear in a meshed mode, and the tail transmission assembly comprises a second cylindrical gear connected with the first non-orthogonal face gear in a meshed mode. The design requirement of any front inclination angle of the rotor shaft can be met, the transmission mode of the cylindrical gear and the face gear is adopted, the higher speed ratio of the whole machine is achieved, the transmission ratio is stable, and the power density is effectively improved. And pairing processing is not needed, so that the processing and maintenance cost is greatly reduced.
本发明涉及飞行器技术领域,具体涉及一种旋翼减速装置及直升机。旋翼减速装置包括旋翼组件、动力输入组件、尾传组件以及减速组件,旋翼组件包括旋翼轴,减速组件包括设置在旋翼轴上的第一非正交面齿轮和第二非正交面齿轮,第一非正交面齿轮的齿面直径小于第二非正交面齿轮的齿面直径,动力输入组件包括与第二非正交面齿轮啮合连接的第一圆柱齿轮,尾传组件包括与第一非正交面齿轮啮合连接的第二圆柱齿轮。本发明可满足旋翼轴任意前倾角的设计要求,并采用圆柱齿轮和面齿轮的传动方式,以实现整机更大速比,其传动比稳定,有效提高了功率密度。也无需配对加工,大幅度降低了加工和维修成本。
Rotor wing speed reducer and helicopter
一种旋翼减速装置及直升机
2025-03-28
Patent
Electronic Resource
Chinese
Speed reducer shell of crossed double-rotor unmanned helicopter and speed reducer
European Patent Office | 2021
|High-speed tandem-wing full-moving-wing single-rotor-wing helicopter without tail rotor
European Patent Office | 2023
|