A heavy truck planet wheel electric drive axle comprises a first speed reduction unit and a planet row speed reducer which are in transmission connection and further comprises a differential mechanism, the differential mechanism is in transmission connection with an output shaft, and a planet carrier of the planet row speed reducer is connected with a differential mechanism shell of the differential mechanism. The output end of the first speed reduction unit is in transmission connection with a sun gear of the planet row speed reducer, the input end of the first speed reduction unit is connected with a driving motor, and a gear shifting mechanism is further connected to the planet carrier and can connect or disconnect power connection between an inner gear ring of the planet row speed reducer and the planet carrier. According to the electric drive axle, first-stage speed reduction is provided through the first speed reduction mechanism, and first-gear large-torque output and first-gear and second-gear high-speed and high-efficiency output are achieved through the gear shifting mechanism. Meanwhile, the transmission system has the requirements for high strength and high rigidity, the planetary gear train is adopted, the size is reduced, the structure is compact, the number of gears is reduced, the assembly weight is effectively reduced, and compared with an existing scheme, the transmission system is more compact and meets the space requirement.
一种重卡行星轮电驱桥,包括传动连接的第一减速单元和行星排减速器,还包括差速器,所述差速器和输出轴传动连接,所述行星排减速器的行星架和差速器的差速器壳体连接,第一减速单元的输出端和行星排减速器的太阳轮传动连接、输入端连接驱动电机,在行星架上还连接有换档机构,所述换档机构可接合或断开行星排减速器的内齿圈与行星架的动力连接。本发明提供的电驱桥,利用第一减速机构提供一级减速,并利用换档机构实现一档大扭矩输出一级二档高速高效率输出。同时传动系统具有高强度、高刚度的要求,采用行星轮系减少体积,结构紧凑,减少齿轮数,有效降低总成重量,相比现有方案更为紧凑,满足空间要求。
Heavy truck planet wheel electric drive axle
一种重卡行星轮电驱桥
2025-04-15
Patent
Electronic Resource
Chinese
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