The invention discloses an integrated wet friction brake drive axle for an electric vehicle, which comprises an axle housing, a differential mechanism arranged in the axle housing and connected with a transmission shaft, and a left half shaft and a right half shaft respectively connected with two output ends of the differential mechanism, and further comprises a rotating sleeve which is arranged on the left half shaft in a sleeving manner and rotates synchronously with the left half shaft, outer friction plates embedded into the inner wall of the rotating sleeve in an axial sliding manner, a rotating seat which is connected to a shell of the differential mechanism and rotates synchronously with the rotating sleeve, inner friction plates which are arranged on the outer wall of the rotating seat in an axial sliding manner and are distributed with the outer friction plates in a staggered manner, a brake piston which is arranged in the axle housing in an axial moving mode and used for pushing the outer friction plates and the inner friction plates to be mutually pressed, and an elastic pre-tightening piece which is arranged between every two adjacent outer friction plates and used for keeping the two adjacent outer friction plates away from the inner friction plate between the two adjacent outer friction plates in a natural state. Differential speed between the left half shaft and the right half shaft of the vehicle in a normal linear driving state can be avoided, and rotating speed balance of the left half shaft and the right half shaft is guaranteed.
本发明公开一种电动车辆用集成式湿式摩擦制动驱动桥,包括桥壳、设置于桥壳内并与传动轴相连的差速器、与差速器的两输出端分别相连的左右半轴,还包括套设于左半轴上并与其同步旋转的旋转套、可轴向滑动地嵌设于旋转套内壁的外摩擦片、连接于差速器的壳体上并与其同步旋转的旋转座、可轴向滑动地设置于旋转座外壁且与各片外摩擦片交错分布的内摩擦片、可轴向移动地设置于桥壳内并用于推动各片外摩擦片与各片内摩擦片互相压紧的制动活塞,以及设置于相邻两片外摩擦片之间、用于在自然状态下保持相邻两片外摩擦片远离两者之间的内摩擦片的弹性预紧件。本发明能够避免车辆在正常直线行驶状态下于左右半轴之间产生差速,保证左右半轴的转速均衡。
Integrated wet friction brake drive axle for electric vehicle
一种电动车辆用集成式湿式摩擦制动驱动桥
2021-10-22
Patent
Electronic Resource
Chinese
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