The invention belongs to the field of transmission of main speed reducers of helicopters, and relates to a torque dividing gear transmission speed reducer for a coaxial helicopter main speed reducer. According to the torque dividing gear transmission speed reducer for the coaxial helicopter main speed reducer, an engine output shaft is connected with a power input shaft through an overrun clutch, two driving bevel gears are fixed to the power input shaft and meshed with two driven bevel gears correspondingly, so that reversing and torque dividing are achieved, the small end faces of the two driven bevel gears are oppositely arranged, and therefore the rotating directions of two rotor shafts are opposite; according to the torque dividing transmission speed reducer for the coaxial helicopter, bevel gear torque dividing is adopted for first-stage speed reduction, cylindrical gear torque dividing transmission is adopted for second-stage speed reduction, power is divided through multiple branches, torque transmitted by gears in all the branches is reduced, and the adopted gears are small in tooth number, small in size, light in weight and low in vibration noise; and the bearing capacity of the gears is improved, the fatigue life is prolonged, and large-transmission-ratio and high-power transmission can be achieved.
本发明属于直升机主减速器传动领域,涉及一种用于共轴直升机主减速器的分扭齿轮传动减速装置;本发明的发动机输出轴通过超越离合器与动力输入轴相连接,动力输入轴上固定有两个主动锥齿轮,分别与两个从动锥齿轮啮合,从而实现换向,分扭,并且两个从动锥齿轮的小端端面相对布置,从而使得两个旋翼轴的转向相反,本发明用于共轴直升机的分扭传动减速装置,在第一级减速采用锥齿轮分扭,在第二级减速采用圆柱齿轮分扭传动,功率经过多支路分流,各支路中齿轮所传递的扭矩降低,使得采用的齿轮齿数较少、体积较小、质量轻、振动噪声小,提高了齿轮的承载能力、疲劳寿命,可以实现大传动比、大功率传动。
Torque dividing gear transmission speed reducer for coaxial helicopter main speed reducer
一种用于共轴直升机主减速器的分扭齿轮传动减速装置
2021-10-08
Patent
Electronic Resource
Chinese
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