CN220518399U

CN220518399U - Novel auxiliary frame behind hydraulic pipe welding type

Info

Publication number: CN220518399U
Application number: CN202322056837.5U
Authority: CN
Inventors: 赵永大; 张昊; 王远生; 何照辉; 王建林; 张建; 李幸福; 王聪; 张凤超
Original assignee: Anhui Vie Automobile Parts Co ltd
Current assignee: Anhui Vie Automobile Parts Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-02-23
Anticipated expiration: 2033-07-31

Abstract

The utility model relates to the field of automobile auxiliary frames, and discloses a novel hydraulic pipe splice welding type rear auxiliary frame which comprises a front cross beam, a rear cross beam, a left longitudinal beam, a right longitudinal beam, a spring arm cross beam welded between the left longitudinal beam and the right longitudinal beam, a rear suspension bracket, a first surface of the spring arm cross beam, a second surface of the rear cross beam, an inclined surface of the first surface, an assembling area of the second surface, and a rear suspension bracket, wherein the two ends of the rear suspension bracket are respectively connected with the spring arm cross beam and the rear cross beam. The auxiliary frame has the advantages of simple processing procedure, low cost, high precision and the like.

Description

Novel auxiliary frame behind hydraulic pipe welding type

Technical Field

The utility model relates to the field of auxiliary frames, in particular to a novel hydraulic pipe splice welding type rear auxiliary frame.

Background

With the rapid development of new energy automobiles in China, each new energy host factory mostly selects a five-link suspension with better control performance on suspension selection in order to promote the competitive advantage of self products, and an auxiliary frame is used as an important structural member of a suspension system, for example, CN202010473244.7 discloses a rear auxiliary frame which bears a motor, a control arm, a stabilizer bar, a steering gear and the like, so that the layout space is relatively limited, and the structure is relatively complex. The new energy automobile motor is generally installed on the auxiliary frame and supported by three suspension points. The suspension point dynamic stiffness and dimensional accuracy need to be high enough to meet NVH requirements and motor assembly requirements.

The general auxiliary frame suspension point structure is as follows, and control suspension point arranges in longeron front end, and back suspension point arranges in the middle part of the back crossbeam, and this kind of structure has following shortcoming:

1. the left and right suspension arrangement space is relatively narrow, the peripheral weld seams are more, the welding deformation is larger, and the mechanical properties of the materials in a larger welding heat affected zone are seriously reduced.

2. The rear suspension bracket is complex, and a plurality of molds are needed to be opened to ensure the rear suspension bracket to be molded.

3. When the rear suspension bracket is welded, the rear suspension bracket and the spring arm cross beam are assembled simultaneously, and welding is completed simultaneously, so that a welding fixture mechanism is complex, and welding precision is not easy to guarantee.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a novel hydraulic pipe splice welding type rear auxiliary frame.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

the utility model provides a novel sub vehicle frame behind hydraulic pipe splice welding, including front beam, the rear beam, left side longeron and right longeron, still including the spring arm crossbeam of welding between left side longeron and right side longeron, the spring arm crossbeam is located between front beam and the rear beam, still include rear suspension support, rear suspension support's both ends are connected with spring arm crossbeam and rear beam respectively, spring arm crossbeam and rear suspension support complex face is face one, rear beam and rear suspension support complex face is face two, face one is the inclined plane, face two is the inclined plane, the region between face one and face two place planes is the assembly region, rear suspension support can make its both ends in face one and face two cooperation respectively along the assembly region.

Preferably, the first surface and the second surface are planes, the included angle between the first surface and the horizontal plane is an angle I, the included angle between the second surface and the horizontal plane is an angle II, and the angle I is greater than or equal to the angle II.

Preferably, the angle I is 40-50 degrees, and the angle II is 40-50 degrees.

Preferably, angle one is 47 and angle two is 43.5.

Preferably, the rear suspension bracket comprises a rear suspension left bracket and a rear suspension right bracket, and the end surfaces of the two ends of the rear suspension left bracket and the rear suspension right bracket are respectively attached to the first surface and the second surface.

Preferably, the rear suspension left bracket and the rear suspension right bracket are U-shaped brackets in cross section, and U-shaped openings of the rear suspension left bracket and the rear suspension right bracket are arranged in a back-to-back mode.

Preferably, the sleeves are welded at both ends of the front cross beam and the rear cross beam.

Due to the adoption of the technical scheme, the utility model has the following remarkable technical effects:

the utility model redesigns the structure of the auxiliary frame, reduces the welding area, reduces the welding line length, ensures the strength and the dimensional accuracy of left and right suspension, reduces the molding difficulty of the rear suspension bracket, reduces 2 pairs of stamping dies, can lead the rear suspension bracket to be pushed in at last after the welding of the spring arm cross beam and the BC reference sleeve, effectively reduces the welding deformation, ensures the unification of the welding reference and the assembly reference, and ensures the dimensional accuracy. The rigidity of the auxiliary frame is enhanced through the design of the front beam arm support, and the integral mode of the auxiliary frame is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the subframe.

Fig. 2 is a schematic view of the overall structure of the subframe.

Fig. 3 is a cross-sectional view of fig. 2.

Fig. 4 is a schematic view of the structure with the suspension brackets removed.

Fig. 5 is a schematic view of the structure with the suspension brackets removed.

The technical names of the reference numerals in the drawings are: 1-front cross beam, 4-left longitudinal beam, 3-right longitudinal beam, 2-rear cross beam, 5-spring arm cross beam, 6-rear suspension bracket, 7-surface one, 8-surface two, 10-assembly area, 11-angle one, 12-angle two, 13-rear suspension left bracket, 14-rear suspension right bracket, 15-sleeve and 16-front beam arm bracket.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings and examples.

Example 1

The utility model provides a novel sub vehicle frame behind hydraulic pipe splice welding, including front cross member 1, rear cross member 2, left side longeron 4 and right side longeron 3, still including welding the spring arm crossbeam 5 between left side longeron 4 and right side longeron 3, spring arm crossbeam 5 is located between front cross member 1 and rear cross member 2, still include rear suspension support 6, the both ends of rear suspension support 6 are connected with spring arm crossbeam 5 and rear cross member 2 respectively, spring arm crossbeam 5 and rear suspension support 6 complex face is face one 7, rear cross member 2 and rear suspension support 6 complex face is face two 8, face one 7 is the inclined plane, face two 8 is the inclined plane, the region between face one 7 and face two 8 place planes is assembly area 10, rear suspension support 6 can make its both ends in face one 7 and face two 8 complex respectively along assembly area 10 territory. The design of the inclined plane forms an opening area on the upper side, and the rear suspension bracket 6 can be inserted between the first surface 7 and the second surface 8 along the opening area, so that the rear suspension bracket 6 is possible to be welded finally.

In this embodiment, the first surface 7 and the second surface 8 are both planes, the included angle between the first surface 7 and the horizontal plane is the first angle 11, the included angle between the second surface 8 and the horizontal plane is the second angle 12, and the first angle 11 is greater than or equal to the second angle 12. In this embodiment the angle of angle one 11 is greater than angle two 12. The structural design is convenient for the rear suspension bracket 6 to be clamped with the first surface 7 and the second surface 8 when being arranged between the first surface 7 and the second surface 8, ensures firm initial connection and is convenient for subsequent welding procedures.

The first angle 11 ranges from 40 degrees to 50 degrees, and the second angle 12 ranges from 40 degrees to 50 degrees.

Specifically, in this embodiment, angle one 11 is 47 ° and angle two 12 is 43.5 °.

For easy installation, the rear suspension bracket 6 comprises a rear suspension left bracket 13 and a rear suspension right bracket 14, and the end surfaces of the two ends of the rear suspension left bracket 13 and the rear suspension right bracket 14 are respectively attached to the first surface 7 and the second surface 8. The double-bracket structure is more convenient to install relative to the single-suspension bracket with larger size, has lower requirement on the size, and simultaneously has smaller double-bracket weight and is beneficial to light weight.

In the scheme, the rear suspension left bracket 13 and the rear suspension right bracket 14 are U-shaped brackets in cross section, and U-shaped openings of the rear suspension left bracket 13 and the rear suspension right bracket 14 are arranged in a back-to-back mode. The support of this kind of structure has intensity big, has promoted 10% in comparison with the prototype, and then has promoted the holistic NVH performance of sub vehicle frame, and simple structure simultaneously, the shaping degree of difficulty is low, and the shaping qualification rate is high, and the material utilization can reach 91%, and reducible a pair drawing die and cut off die have reduced part development and single cost.

In this scheme, sleeve 15 is welded at both ends of front beam 1 and rear beam 2. The upper end surface and the inner hole of the sleeve 15 serve as positioning references of the post-welding suspension bracket 6 and serve as references for subsequent detection and assembly, so that accumulated errors are avoided, and the accuracy of the post-welding suspension bracket 6 is ensured.

Still include the forebeam arm support 16, the forebeam arm support 16 is L shape, and the setting of forebeam arm support 16 is in the corner that front cross beam 1 and left longeron 4 are connected to and is set up in the corner that front cross beam 1 and right longeron 3 are connected, and the one end of forebeam foot support is connected on front cross beam 1, and the other end is connected on left longeron 4 or right longeron 3.

Example 2

The difference from example 1 is that: the front cross beam 1, the rear cross beam 2, the left longitudinal beam 4 and the right longitudinal beam 3 are hydraulic pipe beams.

Example 3

The difference from example 1 is that: the rear left bracket 13 and the rear right bracket 14 are V-shaped as a whole.

Claims

1. The utility model provides a novel sub vehicle frame behind hydraulic pipe welding which characterized in that: including front cross beam (1), rear cross beam (2), left side longeron (4) and right longeron (3), still including welding spring arm crossbeam (5) between left side longeron (4) and right side longeron (3), spring arm crossbeam (5) are located between front cross beam (1) and rear cross beam (2), still include rear suspension support (6), the both ends of rear suspension support (6) are connected with spring arm crossbeam (5) and rear cross beam (2) respectively, spring arm crossbeam (5) are face one (7) with rear suspension support (6) complex face, face one (7) are the inclined plane, face two (8) are the inclined plane, the region between face one (7) and face two (8) place is assembly district (10), rear suspension support (6) can make its both ends respectively in face one (7) and face two (8) complex along assembly district (10) territory.

2. The novel hydraulic pipe splice welding rear subframe of claim 1, wherein: the first surface (7) and the second surface (8) are both planes, the included angle between the first surface (7) and the horizontal plane is an angle one (11), the included angle between the second surface (8) and the horizontal plane is an angle two (12), and the angle one (11) is more than or equal to the angle two (12).

3. The novel hydraulic pipe splice welding rear subframe according to claim 2, wherein: the angle I (11) is 40-50 degrees, and the angle II (12) is 40-50 degrees.

4. The novel hydraulic pipe splice welding rear subframe of claim 1, wherein: angle one (11) is 47 deg., angle two (12) is 43.5 deg..

5. The novel hydraulic pipe splice welding rear subframe of claim 1, wherein: the rear suspension bracket (6) comprises a rear suspension left bracket (13) and a rear suspension right bracket (14), and the end surfaces of the two ends of the rear suspension left bracket (13) and the rear suspension right bracket (14) are respectively attached to the first surface (7) and the second surface (8).

6. The novel hydraulic pipe splice welding rear subframe of claim 5, wherein: the rear suspension left bracket (13) and the rear suspension right bracket (14) are U-shaped brackets, and U-shaped openings of the rear suspension left bracket (13) and the rear suspension right bracket (14) are arranged in a back-to-back mode.

7. The novel hydraulic pipe splice welding rear subframe of claim 1, wherein: the two ends of the front cross beam (1) and the rear cross beam (2) are welded with sleeves (15).

8. The novel hydraulic pipe splice welding rear subframe of claim 1, wherein: still include preceding beam arm support (16), preceding beam arm support (16) are L shape, and preceding beam arm support (16) set up in the corner that front cross beam (1) is connected with left longeron (4) to and set up in the corner that front cross beam (1) is connected with right longeron (3), and the one end of preceding beam foot support is connected on front cross beam (1), and the other end is connected on left longeron (4) or right longeron (3).