Electric vehicle deceleration and differential integrated rear axle assembly

Abstract

The invention relates to an electric vehicle reduction and differentiation integrated rear axle assembly which is an integrated assembly of a motor, a reducing mechanism, a differential mechanism and a rear axle of an electric vehicle. The integrated assembly is applied to rear axle drive systems of freight vehicles, passenger vehicles, electric three-wheeled vehicles, electric four-wheeled vehicles and the like. The integrated assembly comprises the motor, the reducing mechanism, the differential mechanism, a reduction and differential case and the rear axle. The rear axle comprises a rear axle stand, a first drive half-axle, a second drive half-axle, a first braking fixed plate, a second braking fixed plate, a brake block, a brake cam, a first hub and a second hub. The reduction and differential case is installed on the rear axle stand and is fixed by screws; the reducing mechanism comprises a reducing gear shaft, a reduction transition gear and a reduction transition pinion; and the differential mechanism comprises a differential mechanism housing, a differential gear, a first satellite gear, a second satellite gear, a satellite gear shaft, a first spline gear, a second spline gear and a fifth bearing. The differential mechanism housing is installed below the reduction and differential case through the fifth bearing and a bearing support, and the differential gear is arranged outside the differential mechanism housing.

Description

technical field [0001] The electric vehicle deceleration and differential integrated rear axle assembly of the present invention relates to an electric vehicle motor, reducer, differential, and rear axle integrated assembly, which is suitable for freight, passenger transport, electric three-wheel and electric four-wheel Cars and other rear axle drive systems. Background technique [0002] The current commercially available electric vehicle transmission system is a part of the transmission of the motor, the transmission output shaft passes through the sprocket, the chain, the intermediate transmission shaft, the intermediate transition sprocket, and the transmission chain, and is transmitted to the rear axle to drive the rear wheel drive shaft through the secondary transmission. , to drive electric vehicles, there are the following disadvantages: through the secondary transmission, it is necessary to increase transmission components such as sprockets, chains, intermediate tra...

AI Technical Summary

Problems solved by technology

[0002] The current commercially available electric vehicle transmission system is a part of the transmission of the motor, the transmission output shaft passes through the sprocket, the chain, the intermediate transmission shaft, the intermediate transition sprocket, and the transmission chain, and is transmitted to the rear axle to drive the rear wheel drive shaft through the secondary transmission. , to drive electric vehicles, there are the following disadvantages: through the secondary transmission, it is necessary to increase transmission components such as sprockets, chains, intermediate transition transmission shafts, and intermediate transition sprockets to drive the rear wheel drive shaft, the manufacturing cost is high, and the parts in the transmission process The friction loss is large, the transmission chain is easy to fall off the sprocket, the output power loss is large, the maintenance is troublesome, and the repair rate of the whole vehicle is high

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