The embodiment of the invention discloses a single planet wheel type two-gear speed reducer assembly which comprises a first input shaft, a second input shaft, a first gear speed reducing mechanism, a second gear speed reducing mechanism, a dog tooth mechanism, a center shaft and a planet gear train. Wherein the first input shaft is in transmission connection with the central shaft through the first gear reduction mechanism; the second input shaft is in transmission connection with the central shaft through a second gear reducing mechanism; the first input shaft and the second input shaft are symmetrically arranged relative to the central shaft; the first gear reduction mechanism and the second gear reduction mechanism are symmetrically arranged relative to the central shaft; the dog tooth structure is fixed on the central shaft and is pushed along the central shaft so as to change the speed ratio of the first gear speed reducing mechanism to the second gear speed reducing mechanism at the same time; the central shaft is in transmission connection with a sun gear shaft of the planetary gear train; and a planet carrier of the planetary gear train is used as an output end. According to the speed reducer assembly designed according to the scheme, the influence of impact loads from the road surface is effectively reduced through structure optimization, and meanwhile the system cost is considered.

    本申请实施例公开了一种单行星轮式两档减速器总成,包括:第一输入轴、第二输入轴、第一齿轮减速机构、第二齿轮减速机构、狗齿机构、中心轴和行星轮系;其中,第一输入轴通过第一齿轮减速机构传动连接至中心轴;第二输入轴通过第二齿轮减速机构传动连接至中心轴;第一输入轴与第二输入轴相对于中心轴轴对称设置;第一齿轮减速机构与第二齿轮减速机构相对于中心轴轴对称设置;狗齿结构固定在中心轴上,沿中心轴推动,以同时改变第一齿轮减速机构与第二齿轮减速机构的速比;中心轴与行星轮系的太阳轮轴传动连接;以行星轮系的行星架作为输出端。根据本方案设计的减速器总成,通过结构优化有效降低来自路面的冲击载荷的影响,同时兼顾系统成本。


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    Title :

    Single planet wheel type two-gear speed reducer assembly, electric drive axle and automobile


    Additional title:

    一种单行星轮式两档减速器总成、电驱桥以及汽车


    Contributors:
    LI WEI (author) / LIU FEI (author) / FU YAO (author)

    Publication date :

    2023-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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