An electric drive axle with central disc brake

Abstract

The present invention proposes an electric drive axle with a central disc brake, which includes a vertically arranged axle housing assembly. The middle part of the front side of the shell assembly is fixed with a main reducer, and the main reducer is fixedly connected with the maintenance-free wheel end. The left side of the main reducer is fixed with a drive motor, and the drive motor and the axle housing assembly Fixedly connected, the top of the right side of the final reducer is fixedly provided with a central disc brake, the right end of the final reducer is fixedly provided with a central brake disc, and one side of the top of the axle housing assembly is fixedly provided with The air pressure balance valve, thereby, the present invention has the advantages of saving chassis layout space and reducing vehicle weight.

Description

technical field [0001] The invention belongs to the technical field of vehicle axle braking, in particular to an electric drive axle with a central disc brake. Background technique [0002] At present, with the implementation of the national energy conservation and emission reduction policy, the country vigorously promotes new energy vehicles, new energy vehicles are becoming more and more popular, and the proportion of new energy commercial vehicles is gradually increasing. Most of the current new energy commercial vehicles use drive motors to directly replace engines. The transmission chain of this structure is too long, the energy loss is large, and the chassis space is occupied, which is not conducive to the layout of the power battery and the chassis of the fixed scene vehicle, such as Figure 13 As shown, as shown in patent CN103496320, the basic function of vehicle driving is easily realized through the integration of drive motor and axle. The device described in pate...

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Problems solved by technology

[0003] At present, the chassis power system of new energy commercial vehicles is usually a structure of drive motor + gearbox + transmission shaft + traditional drive axle. This structure takes up a lot of space in the chassis, which is not conducive to the layout of power batteries. The weight of the power system is not conducive to new energy vehicles. Weight reduction; Among them, the patent CN 103496320 and its device do not have the function of central parking in terms of function. It adopts three-axis two-stage deceleration, and its shaft system adopts a vertical arrangement scheme. The torque on the joint surface between the reducer and the axle housing is too large, causing a large deformation of the axle housing; due to the manufacturing characteristics of the brake drum, the device described in the patent CN106976395A is extremely difficult to precisely control the dynamic unbalance, and the high speed of the drive motor, It will cause a large unbalanced centrifugal force during the rotation of the brake drum, resulting in high-frequency vibration of the gear shaft, resulting in physical damage to the bearings and gears

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