The embodiment of the invention discloses a single planet wheel type three-gear speed reducer assembly, an electric drive axle and an automobile. The speed reducer assembly comprises an input shaft, a first gear speed reducing mechanism, a second gear speed reducing mechanism, a first synchronizer, a second synchronizer, a center shaft and a planet gear train. The input shaft is in transmission connection with the central shaft through a first gear reducing mechanism; the first synchronizer is fixed to the center shaft and can slide in the axial direction of the center shaft so as to change the speed reduction ratio of the first gear speed reduction mechanism. The second synchronizer is fixed to the center shaft and can slide in the axial direction of the center shaft so as to change the speed reduction ratio of the second gear speed reduction mechanism. 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. By adopting the combined transmission of the coaxial planetary gear train and the parallel shaft gear, the power-dividing torque-dividing bearing capacity is stronger; in addition, the overall layout is more compact, and the occupied vehicle-mounted space is reduced; and meanwhile, the power transmission path is simplified, and the construction cost is reduced.
本申请实施例公开了一种单行星轮式三档减速器总成、电驱桥以及汽车,减速器总成包括:输入轴,第一齿轮减速机构、第二齿轮减速机构、第一同步器、第二同步器、中心轴和行星轮系;输入轴通过第一齿轮减速机构传动连接至中心轴;第一同步器固定在中心轴上,可沿中心轴轴向滑动,以改变第一齿轮减速机构的减速速比;第二同步器固定在中心轴上,可沿中心轴轴向滑动,以改变第二齿轮减速机构的减速速比;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。通过采用同轴行星轮系与平行轴齿轮组合传动,具有更强的分功率分扭矩承载力;并且整体布局更加紧凑,减少了车载空间的占用;同时简化了动力传递路径,降低了建设成本。
Single planet wheel type three-gear speed reducer assembly, electric drive axle and automobile
一种单行星轮式三档减速器总成、电驱桥以及汽车
2023-09-12
Patent
Electronic Resource
Chinese
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