The invention belongs to the field of machinery and vehicle transmission, and particularly relates to a coaxial two-gear electric drive axle. The drive axle comprises a driving motor, a secondary planetary reducing mechanism and a planet row differential mechanism; an output shaft of the driving motor is connected with the input end of the secondary planetary reducing mechanism, the output end of the secondary planetary reducing mechanism is connected with the input end of the planet row differential mechanism, and the planet row differential mechanism comprises two output ends. One output end of the planet row differential mechanism is connected with a left output half shaft, the other output end of the planet row differential mechanism is connected with a right output half shaft, an output shaft of the driving motor is a hollow shaft, and the free end of the left output half shaft penetrates through the hollow shaft and the driving motor to be arranged at the other end of the driving motor. The right output half shaft and the left output half shaft are arranged in opposite directions, and the axes are located on the same straight line. Two speed reduction gears are achieved by arranging the two-stage speed reducer, then the two-stage speed reducer is matched with the driving motor to output the rotating speed range, stepless speed change is achieved, the two output half shafts are coaxially arranged, the built-in structure is compact, the size is small, and arrangement and installation are easy.
本发明属于机械和车辆传动领域,具体涉及一种同轴式两档电驱动桥。包括驱动电机、二级行星减速机构和行星排差速器,驱动电机的输出轴与二级行星减速机构的输入端连接,二级行星减速机构的输出端与行星排差速器的输入端连接,行星排差速器包括两个输出端,行星排差速器的一个输出端连接左输出半轴,另一个输出端连接右输出半轴,驱动电机的输出轴为空心轴,左输出半轴的自由端穿过空心轴并贯穿驱动电机设置到驱动电机另一端,右输出半轴与所述左输出半轴反向设置且轴心位于同一条直线上。本发明通过设置二级减速器实现两个减速档位,进而配合驱动电机输出转速范围,实现无级变速,将两输出半轴同轴设置,内置结构紧凑,体积小,容易布置安装。
Coaxial two-gear electric drive axle
一种同轴式两档电驱动桥
2021-08-20
Patent
Elektronische Ressource
Chinesisch