Drive axle for electric vehicle

Abstract

The invention discloses a drive axle for an electric vehicle. The drive axle comprises a drive axle housing, one or more driving motors, one or more hollow shafts, connecting shafts, sun gears, one or more planetary classes, a differential gear, a left half vehicle shaft, a right half vehicle shaft and drive bodies, wherein each hollow shaft is coaxially driven by the corresponding driving motor, is rotatably connected with the corresponding sun gear, and can side in an axial direction; each connecting shaft comprises an inner edge outline and an outer edge outline; each drive body is located on the periphery of the corresponding sun gear, is axially arranged in the inner edge outline, and is located in a corresponding accommodating cavity; an annular element is arranged on one side of each drive body; each planetary class is in transmission connection with the corresponding sun gear; the differential gear is in transmission connection with the planetary classes; the left half vehicle shaft and the right half vehicle shaft are separately connected with two ends of the differential gear; and a supporting shaft at two ends of the drive axle housing is detachably connected with the drive axle housing. The drive axle disclosed by the invention is simple in structure, convenient to assemble and disassemble, free from efficiency losses and free from abrasion increase, and the problem of a conventional drive axle in axial supporting is well solved.

Description

technical field [0001] The invention relates to the field of drive axles, in particular to a drive axle for industrial electric vehicles. Background technique [0002] The drive axle is a mechanism located at the end of the drive train that can change the speed and torque from the transmission and transmit them to the drive wheels. In the prior art, the drive axle of an industrial electric vehicle (such as a forklift) mainly includes a drive motor, a planetary gear, and a drive shaft. Gear and planetary stages are combined with drive output shafts. However, the traditional driving axle will inevitably produce noise when the vehicle is running at high speed, especially in the driving and starting stage of the driving axle. In the traditional way of using the pressure ring, part of the axial force of the helical gear of the planetary gear will be consumed on the pressure ring, which will greatly reduce the driving efficiency; at the same time, the pressure ring will rub agai...

AI Technical Summary

Problems solved by technology

However, the traditional drive axle will inevitably produce noise when the vehicle is running at high speed, especially in the drive start stage of the drive shaft.

In the traditional way of using the pressure ring, part of the axial force of the helical gear of the planetary gear will be consumed on the pressure ring, which will greatly reduce the driving efficiency; at the same time, the pressure ring will rub against the surrounding components, which will greatly increase the wear of the drive axle components , reducing the service life of the drive axle

Images