Automobile subframe and automobile

Abstract

The invention relates to an automotive auxiliary frame which comprises a first longitudinal beam, a second longitudinal beam, a first cross beam, a second cross beam, a first swing arm mounting frame, a second swing arm mounting frame, a first supporting column and a second supporting column. The first longitudinal beam and the second longitudinal beam are oppositely arranged, and the first cross beam and the second cross beam are arranged oppositely and connected between the first longitudinal beam and the second longitudinal beam. The first swing arm mounting frame is connected to one end of the first longitudinal beam, and the second swing arm mounting frame is connected to one end of the second longitudinal beam. The first supporting column is connected to the first longitudinal beam, and the second supporting column is connected to the second longitudinal beam. According to the automotive auxiliary frame, platform design can be achieved, the automotive auxiliary frame can be applied to automobiles of different models under the condition that the local structure of the automotive auxiliary frame can be changed, the number of adopted molds is small, and the mold using cost is greatly lowered. The invention further relates to an automobile.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile auxiliary frame and an automobile. Background technique [0002] The sub-frame of the car is the main component used to support the front and rear cars and suspension. figure 1 It is a structural schematic diagram of an existing automobile sub-frame. Such as figure 1 As shown, the automobile subframe 200 includes a main body portion 201, a first swing arm installation portion 202, a second swing arm installation portion 203, a first anti-collision beam installation portion 204, a second anti-collision beam installation portion 205, a first support The elbow 206, the second support elbow 207 and the suspension box 208; the first swing arm installation part 202 and the second swing arm installation part 203 are oppositely connected to one side of the main body part 201; the first anti-collision beam installation part 204 is connected to the other side of the ma...

AI Technical Summary

Problems solved by technology

[0003] The main body 201 of the automobile sub-frame 200 is stamped and formed by a steel plate with a concave and convex die, and the first swing arm installation part 202, the second swing arm installation part 203, the first anti-collision beam installation part 204, and the second anti-collision beam installation The portion 205, the first support elbow 206, the second support elbow 207, and the suspension box 208 are also formed by stamping a steel plate with a concave-convex die; Increase, not in line with the country's long-term and short-term goals for energy conservation and emission reduction

Since each part of the existing automobile subframe 200 is formed by stamping with corresponding dies, the platform design of the existing automobile subframe 200 will be greatly limited, and the application of the existing automobile subframe 200 For another vehicle type, it is necessary to redesign the main body 201, the first swing arm installation part 202, the second swing arm installation part 203, the first anti-collision beam installation part 204, the second anti-collision beam installation part 205, the first Support bend pipe 206, second support bend pipe 207 and suspension box 208, so the development cost of existing automobile sub-frame 200 is high; especially, all series cars of A and B grades of existing automobiles all adopt traditional technology The production of the automobile subframe 200 requires at least three completely different structural solutions, so the number of molds required is huge, which brings high costs for mold and tooling changes

[0004] In addition, each part of the existing automobile subframe 200 is made by stamping. During the stamping process, the plate is physically deformed under the action of the impact force. When the stamping force exceeds the yield strength of the plate, the material is crushed. Processed into the shape of the mold, when the mold is opened, due to the release of pressure, the residual stress in the sheet will tend to restore the product to the shape before forming, resulting in inaccurate product dimensions. The dimensional accuracy of the frame 200 is low

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