Auxiliary frame and motor vehicle

Abstract

The embodiment of the invention discloses an auxiliary frame and a motor vehicle. The auxiliary frame comprises two longitudinal beams which are oppositely arranged, the two first cross beams which are connected between the two longitudinal beams at intervals, two mounting frames which are connected with the two opposite ends of the front cross beam and the rear cross beam respectively, a second cross beam which is connected to the sides, far away from the two first cross beams, of the two mounting frames, two half shaft sleeves which are located on the sides, away from the two first cross beams, of the two longitudinal beams correspondingly, and two wheel side connecting pieces which are respectively connected between the two half axle sleeves and the corresponding longitudinal beams. According to the embodiment of the invention, the problems of low strength, complex structure and difficult modification of the auxiliary frame are effectively solved.

Description

technical field [0001] The invention relates to the technical field of motor vehicle accessories, in particular to a sub-frame and a motor vehicle. Background technique [0002] At present, the main way for a motor vehicle to realize the integration of the wheel drive rear axle is to carry the motor and the reducer on the bottom plate of the subframe, where the mounting positions that can match the motor and the reducer are set on the bottom plate. Generally, the The base plate is arranged in an arc shape, and the motor and the reducer are respectively matched and installed on corresponding installation positions on the base plate, so as to connect the motor and the reducer, and further fix the two on the base plate. When the motor vehicle is running, the reducer outputs power to the wheel hub connected to it. While realizing the power output to the wheel, since the outer shell of the reducer is firmly connected to the wheel hub, the wheel side load is transmitted to the bot...

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Problems solved by technology

[0003] In the prior art, the strength of the bottom plate is generally enhanced in the following ways: 1. The bottom plate is made of thicker steel plates, but this will directly increase the quality of the sub-frame, thus failing to meet the requirements for light weight and ride comfort ; 2. The bottom plate of the subframe is customized according to the specific shape of the motor and reducer, but this requires redesigning the bottom plate of the subframe according to the motor and reducer, which is not conducive to the modification of the motor vehicle; 3. Since the outer casing of the reducer directly accepts the wheel side load transmitted by the hub, the thickness of the outer casing of the reducer is increased to reduce the transmission of the wheel side load to the bottom plate, but this will significantly increase the weight of the reducer, while the gear of the reducer Due to the side load of the wheel, there is a large displacement, which is not conducive to gear meshing, which will also increase noise and reduce the service life of the gear

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