Full electric vehicle central reducer unit with motor side drive

Abstract

The invention relates to a full electric vehicle central reducer unit with motor side drive, which comprises an input gear shaft with an end part connected with a motor. The input gear shaft is supported on a reducer unit shell through an input bearing; shaft teeth on the input gear shaft are meshed with a middle shaft transmission gear; the middle shaft transmission gear is fixedly arranged on amiddle shaft; two ends of the middle shaft are supported on the reducer unit shell through cylindrical roller bearings; the middle shaft transmission gear is meshed with an output gear; the output gear is of a hollow spoke structure; an inner hole of the output gear is in interference fit to a convex seam allowance of a shell of a differential mechanism assembly; the output gear transmits a torquethrough a way that a plurality of bolts uniformly arranged on a radial plate are connected with the shell of the differential mechanism; half axle gears on two sides of the differential mechanism areconnected with output half axles; and the output half axles are connected with an output flange plate. The full electric vehicle central reducer unit with motor side drive provided by the invention adopts a two-stage fixed shaft for transmission so as to be high in transmission efficiency, and is compact in arrangement, smaller in size, and lower in processing and maintenance cost.

Description

technical field [0001] The invention relates to the field of automobile transmission, in particular to a central speed reducer of a pure electric vehicle driven by a side of a motor, which can meet the use requirements of a motor rear drive type central speed reducer for a 8-12 meter pure electric road vehicle. Background technique [0002] The 16000Nm central reducer for pure electric vehicles adopts the mode of motor side drive and central reducer transmission. The power is output from the left and right half shafts through the built-in differential of the reducer, and then passes through flanges, universal joints, drive shafts and other links To the hub, to drive the wheel forward or backward, there are no related products and technologies in China at present. [0003] Compared with the previous structure, this type of reducer has high transmission efficiency, simple and compact structure, small size, and low processing and maintenance costs. However, it is a great challe...

AI Technical Summary

Problems solved by technology

[0003] Compared with the previous structure, this kind of reducer has high transmission efficiency, simple and compact structure, small size, and low processing and maintenance costs. However, it is a great challenge to the design of housing strength, gear life, noise, and sealing. Do a lot of calculations and verification simulations

At present, there are similar structures in passenger cars, but the output torque is smaller

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