Stable connecting structure of auxiliary frame cross beam and H-shaped arm support
By setting a notch on the upper longitudinal beam of the automobile frame and welding the longitudinal beam connecting plate, the length of the weld between the H-arm bracket and the cross beam is extended, and the welding strength is enhanced, the problems of limited welding position and stress concentration in the prior art are solved, and the stiffness of the subframe parts are improved.
Patent Information
- Application Number
- CN202420221392.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-01-30
AI Technical Summary
In the prior art, the welding position between the H-arm bracket and the cross beam of the automobile frame is blocked by the longitudinal beam, resulting in a short weld length, a reduced connection stability, and a concentrated stress on the weld position, affecting the stiffness of the subframe parts.
A stable connection structure between the subframe cross beam and the H-arm bracket is designed. By setting a gap on the upper longitudinal beam and welding the longitudinal beam connecting plate, the weld length between the H-arm bracket and the beam is extended and the welding strength is enhanced.
The length of the weld between the H-arm bracket and the beam is effectively improved, the welding strength is enhanced, the stress concentration at the weld position is reduced, and the stiffness of the subframe parts is improved.
Smart Images
Figure CN222663569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile frame structures, in particular to a stable connection structure between a sub-frame crossbeam and an H-arm bracket. Background Art
[0002] The H-arm bracket is welded to the crossbeam and longitudinal beam of the automobile frame to connect the automobile suspension. During welding, the H-arm bracket is usually welded to the crossbeam and longitudinal beam that have been welded. Figure 1 and 2 As shown in the figure (the figure is a top view), the upper longitudinal beam is welded above the cross beam. When welding is required between the cross beam and the H-arm bracket, the longitudinal beam blocks the welding position, so that only a small part of the cross beam and the H-arm bracket can be welded during actual welding, resulting in a short weld length, reduced connection stability, and a large stress concentration at the weld position, which affects the rigidity of the subframe. Therefore, a stable connection structure between the subframe cross beam and the H-arm bracket is needed to solve the above problems. Utility Model Content
[0003] The purpose of the utility model is to provide a stable connection structure between a subframe cross beam and an H-arm bracket to solve the problems existing in the prior art proposed in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A stable connection structure between a subframe crossbeam and an H-arm bracket comprises a crossbeam, a lower longitudinal beam, an upper longitudinal beam and an H-arm bracket, wherein the upper longitudinal beam and the lower longitudinal beam are respectively welded to the upper and lower sides of the crossbeam, the H-arm bracket is welded to the lower longitudinal beam, the crossbeam and the upper longitudinal beam, a notch is provided on the upper longitudinal beam near the H-arm bracket, a longitudinal beam connecting plate is welded to the notch, and one side of the longitudinal beam connecting plate is welded to the H-arm bracket.
[0006] Preferably, the cross beam comprises a cross beam upper plate and a cross beam lower plate, the lower longitudinal beam is welded to the cross beam lower plate, and the upper longitudinal beam is welded to the cross beam upper plate.
[0007] Preferably, the bottom of the H-arm bracket is welded to the lower longitudinal beam, and the side walls of the H-arm bracket are welded to the upper plate of the cross beam, the upper longitudinal beam and the longitudinal beam connecting plate.
[0008] Preferably, positioning holes are provided on the longitudinal beam connecting plate.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] The utility model optimizes the upper longitudinal beam structure and adds a longitudinal beam connecting plate, which can effectively increase the weld length between the cross beam and the H-arm bracket, and at the same time ensure the welding strength between the upper longitudinal beam and the H-arm bracket, thereby reducing the stress concentration at the weld position, reducing the body stress, and improving the rigidity of the subframe. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the existing crossbeam, longitudinal beam and H-arm bracket connection assembly structure.
[0012] Figure 2 This is a schematic diagram of the welding between the existing crossbeam and the H-arm bracket.
[0013] Figure 3 It is a schematic diagram of the connection and assembly structure of the cross beam, longitudinal beam and H-arm bracket of the utility model.
[0014] Figure 4 This is a schematic diagram of the welding structure of the crossbeam and the H-arm bracket of the utility model.
[0015] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model.
[0016] Figure 6 This is the stress analysis result diagram of the existing connection structure.
[0017] Figure 7 This is a diagram showing the stress analysis results of the connection structure of the utility model.
[0018] In the figure: 1. cross beam; 2. lower longitudinal beam; 3. upper longitudinal beam; 4. H-arm bracket; 5. longitudinal beam connecting plate. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0020] See also Figure 1-7 , the utility model provides the following technical solutions:
[0021] A stable connection structure between a subframe crossbeam and an H-arm bracket comprises a crossbeam 1, a lower longitudinal beam 2, an upper longitudinal beam 3 and an H-arm bracket 4, wherein the upper longitudinal beam 3 and the lower longitudinal beam 2 are respectively welded to the upper and lower sides of the crossbeam 1, the crossbeam 1 comprises a crossbeam upper plate and a crossbeam lower plate, the lower longitudinal beam 2 is welded to the crossbeam lower plate, and the upper longitudinal beam 3 is welded to the crossbeam upper plate.
[0022] The H-arm bracket 4 is welded to the lower longitudinal beam 2, the cross beam 1 and the upper longitudinal beam 3, the bottom of the H-arm bracket 4 is welded to the lower longitudinal beam 2, and the side wall of the H-arm bracket 4 is welded to the cross beam upper plate, the upper longitudinal beam 3 and the longitudinal beam connecting plate 5. By welding the H-arm bracket 4 to multiple components such as the lower longitudinal beam 2, the cross beam 1 and the upper longitudinal beam 3, the connection strength of the H-arm bracket 4 can be improved, so that the frame has stronger rigidity.
[0023] A notch is provided on the upper longitudinal beam 3 near the side of the H-arm bracket 4, and a longitudinal beam connecting plate 5 is welded to the notch. One side of the longitudinal beam connecting plate 5 is welded to the H-arm bracket 4, and a positioning hole is opened on the longitudinal beam connecting plate 5. The positioning hole is used for positioning when the longitudinal beam connecting plate 5 is welded, so that the welding butt position is more accurate; by setting the notch on the upper longitudinal beam 3, space can be left for welding between the H-arm bracket 4 and the cross beam 1. After the H-arm bracket 4 and the cross beam 1 are welded, the longitudinal beam connecting plate 5 is placed between the upper longitudinal beam 3 and the H-arm bracket 4 for welding. Through the design of this structure, the weld length between the H-arm bracket 4 and the cross beam 1 can be extended, and the welding strength between the H-arm bracket 4 and the upper longitudinal beam 3 can also be ensured.
[0024] pass Figure 2 and Figure 4 By comparison, it can be concluded that only a small portion of the upper side of the H-arm bracket 4 can be welded between the existing H-arm bracket 4 and the crossbeam 1, while the connection structure of the utility model can weld the joint between the H-arm bracket 4 and the crossbeam 1 more completely; Figure 6 and Figure 7 Comparison of stress analysis results shows that, under the same working conditions, the stress of the existing connection structure reaches 535MPa, while the stress of the connection structure of the utility model is 273MPa, which improves the stress concentration at the welding point.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A structure for stably connecting a subframe crossbeam and an H-arm bracket, comprising a crossbeam (1), a lower longitudinal beam (2), an upper longitudinal beam (3) and an H-arm bracket (4), wherein the upper longitudinal beam (3) and the lower longitudinal beam (2) are respectively welded to the upper and lower sides of the crossbeam (1), and the H-arm bracket (4) is welded to the lower longitudinal beam (2), the crossbeam (1) and the upper longitudinal beam (3), characterized in that: A notch is provided on the upper longitudinal beam (3) on one side close to the H-arm bracket (4), a longitudinal beam connecting plate (5) is welded to the notch, and one side of the longitudinal beam connecting plate (5) is welded to the H-arm bracket (4).
2. The stable connection structure between the subframe cross beam and the H-arm bracket according to claim 1, characterized in that: The cross beam (1) comprises a cross beam upper plate and a cross beam lower plate, the lower longitudinal beam (2) is welded to the cross beam lower plate, and the upper longitudinal beam (3) is welded to the cross beam upper plate.
3. The stable connection structure between the subframe cross beam and the H-arm bracket according to claim 2 is characterized in that: The bottom of the H-arm bracket (4) is welded to the lower longitudinal beam (2), and the side wall of the H-arm bracket (4) is welded to the upper plate of the cross beam, the upper longitudinal beam (3) and the longitudinal beam connecting plate (5).
4. The stable connection structure between a subframe crossbeam and an H-arm bracket according to claim 1, characterized in that: The longitudinal beam connecting plate (5) is provided with a positioning hole.