The invention belongs to the field of helicopter speed reducers, and relates to a torque dividing transmission speed reducer for a coaxial helicopter. A driving bevel gear of the torque dividing transmission speed reducer is meshed with two driven bevel gears at the same time to realize one-time torque dividing and one-stage speed reduction; power is divided into two parts for transmission; one driven bevel gear and two driving bevel gears are fixed on one shaft, and the other driven bevel gear and the other two driving bevel gears are fixed on one shaft; the four driving bevel gears are meshed with the other four driven bevel gears, so that two times of torque division, one time of reversing and two-stage speed reduction are realized; the four driven bevel gears and the four driving bevel gears are separately fixed on a shaft in pairs; and the two driving bevel gears are meshed with one driven bevel gear, and the other two driving bevel gears are meshed with the other driven bevel gear, so that three-stage speed reduction and two-time parallel operation are realized. According to the torque dividing transmission speed reducer for the coaxial helicopter, the gears are small in tooth number, small in size, light in weight and low in vibration noise, the bearing capacity of the gears is improved, the fatigue life of the gears is prolonged, and large-transmission-ratio and high-power transmission can be achieved.

    本发明属于直升机减速器领域,涉及一种用于共轴直升机的分扭传动减速装置,其主动斜齿轮与两个从动斜齿轮同时啮合,实现一次分扭、一级减速;动力分成两部分进行传递;一个从动斜齿轮和两个主动锥齿轮固定于一轴,另一个从动斜齿轮和另外两个主动锥齿轮固定于一轴;这四个主动锥齿轮与另外四个从动锥齿轮啮合,实现两次分扭、一次换向、二级减速;四个从动锥齿轮再分别与四个主动斜齿轮两两固定于一轴;两个主动斜齿轮与一个从动斜齿轮啮合,另两个主动斜齿轮与另一个从动斜齿轮啮合,实现三级减速,两次并车。本发明齿轮齿数较少、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。


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    Title :

    Torque dividing transmission speed reducer for coaxial helicopter


    Additional title:

    一种用于共轴直升机的分扭传动减速装置


    Contributors:
    HU MINGHUI (author) / ZENG LI (author) / CHEN GUANGYAN (author) / ZHANG ZHENYU (author)

    Publication date :

    2021-10-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16H Getriebe , GEARING / B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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