The invention discloses a helicopter tail speed reducer and a helicopter. The helicopter tail speed reducer comprises a casing, and bevel gears, a booster operating lever, a tail rotor shaft and a planetary transmission assembly which are arranged in the casing, and the input bevel gear and the output bevel gear are in first-stage speed reduction and have speed reduction and reversing functions. The output bevel gear, the planetary transmission assembly and the tail rotor shaft are subjected to second-stage speed reduction, and the functions of speed reduction and power output are achieved. The helicopter further comprises a hydraulic oil cylinder, a tail rotor mechanism and a pitch changing mechanism. According to the invention, due to the casing, the input bevel gear and the output bevelgear arranged in the casing, the tail rotor shaft connected with the output bevel gear through the planetary transmission assembly, the propeller pitch control shaft, the booster operating lever andthe like, the tail speed reducer is complete in function, compact in structure, light in weight, high in strength and high in speed reduction ratio.
本发明专利公开了一种直升机尾减速器及直升机,该直升机尾减速器包括机匣,以及设置在机匣内部的锥齿轮、助力器操纵杆、尾桨轴以及行星传动组件,其中:输入锥齿轮与输出锥齿轮为第一级减速,具备减速和换向功能。输出锥齿轮、行星传动组件与尾桨轴为第二级减速,具备减速和输出功率功能。该直升机还包括液压油缸、尾桨机构以及变距机构。本专利通过机匣,以及设置在所述机匣内部的输入锥齿轮、输出锥齿轮、以及与输出锥齿轮通过行星传动组件相连接的尾桨轴、以及桨距操纵轴和助力器操纵杆等结构,实现了尾减速器功能完整、结构紧凑,质量轻、强度高且具备较高的减速比的目的。
Helicopter tail speed reducer and helicopter
一种直升机尾减速器及直升机
2020-11-06
Patent
Electronic Resource
Chinese
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