Full electric vehicle central reducer unit with motor side drive

A technology of central reducer and pure electric vehicle, which is applied in the field of automobile transmission and can solve problems such as small output torque

Pending Publication Date: 2018-03-27
XIAN FASHITE AUTOMOBILE TRANSMISSION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Full electric vehicle central reducer unit with motor side drive
  • Full electric vehicle central reducer unit with motor side drive

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] see Figure 1-2 , the present invention belongs to 8-12 meters pure electric road vehicle motor rear drive type central reducer product, the output torque can reach 16000Nm, the speed ratio is 15.97, the maximum input speed is 9000rpm, and the distance between the input shaft and the output shaft is 430mm.

[0025] The present invention adopts two-stage fixed shaft transmission, the three axes are parallel and have no included angle, the angle between the plane determined by the three axes and the horizontal plane is 12.5 degrees after installation and the input axis is at a high position; the first stage gear pair is the transmission of the input shaft teeth and the intermediate shaft Gear 8, reduction speed ratio 3.37; The second stage gear pair is intermediate shaft and output gear 10, reduction speed ratio is 4.74; Total speed ratio is: 3.37*4.74=1...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H37/08F16H57/021F16H57/022F16H57/023F16H57/029F16H57/037H02K7/116
CPCH02K7/003H02K7/116F16H37/0813F16H57/021F16H57/022F16H57/023F16H57/029F16H57/037F16H2200/0021Y02T10/64
Inventor 刘晓雷刘义孙智金
Owner XIAN FASHITE AUTOMOBILE TRANSMISSION CO LTD
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