Aluminum auxiliary frame

Abstract

The utility model relates to an aluminum auxiliary frame, which belongs to the technical field of automobile parts, and comprises a hollow frame framework, and the frame framework comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam; the front cross beam comprises a mounting sleeve and front cross beam branch pipes symmetrically welded and fixed to the two sides of the mounting sleeve. The front cross beam branch pipe is provided with a welding arc face attached to the mounting sleeve, and the front side edge and the rear side edge of the welding arc face are welded and fixed to the mounting sleeve. Welding structures are arranged at the upper end and the lower end of the front cross beam branch pipe, each welding structure comprises a welding groove and welding convex parts located on the two sides of the welding groove, and the inner edge of each welding groove abuts against the mounting sleeve and is fixedly welded to the mounting sleeve; and the inner edge of the welding convex part is propped against the mounting sleeve and is welded and fixed with the mounting sleeve. The connecting structure has the effect of improving the connecting strength between the mounting sleeve and the front cross beam branch pipe.

Description

TECHNICAL FIELD

[0001] The application relates to the field of automobile parts technology, in particular to an aluminum auxiliary frame. BACKGROUND

[0002] The auxiliary frame is an important component of an automobile, which can provide a more solid foundation for the suspension system, so that the suspension can better play a role, thereby improving the handling and comfort of the vehicle.

[0003] The auxiliary frame mainly comprises a front cross beam, a rear cross beam, a left longitudinal beam connected to one side of the front cross beam and the rear cross beam, and a right longitudinal beam connected to the other side of the front cross beam and the rear cross beam. The front cross beam comprises a mounting sleeve and front cross beam branch pipes connected to both sides of the mounting sleeve. The front cross beam branch pipe has a welding arc surface for welding with the end face of the mounting sleeve, and the top face and the bottom face of the welding arc surface are parallel to the welding line of the end face of the mounting sleeve, which is parallel to the axis direction of the mounting sleeve.

[0004] According to the related technology in the above, the inventors consider that the connection strength of the mounting sleeve and the front cross beam branch pipe in the above front cross beam is not ideal. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the connection strength between the mounting sleeve and the front cross beam branch pipe, the application provides an aluminum auxiliary frame.

[0006] The application provides an aluminum auxiliary frame, which adopts the following technical scheme:

[0007] An aluminum auxiliary frame comprises a hollow frame, which comprises a front cross beam, a rear cross beam, a left longitudinal beam connected to the front cross beam and the rear cross beam, and a right longitudinal beam connected to the front cross beam and the rear cross beam and arranged opposite to the left longitudinal beam. The front cross beam comprises a mounting sleeve and front cross beam branch pipes symmetrically welded and fixed to both sides of the mounting sleeve. The front cross beam branch pipe has a welding arc surface fitted to the mounting sleeve, and the front and rear sides of the welding arc surface are both welded and fixed to the mounting sleeve. The upper and lower ends of the front cross beam branch pipe are both provided with welding structures, which comprise welding grooves and welding convex parts located on both sides of the welding grooves. The inner edge of the welding groove abuts against and is welded and fixed to the mounting sleeve. The inner edge of the welding convex part abuts against and is welded and fixed to the mounting sleeve.

[0008] By adopting the above technical scheme, the front cross beam branch pipe has a welding arc surface welded with the mounting sleeve, and the welding grooves and the welding convex parts provided on the side of the mounting sleeve of the front cross beam branch pipe increase the length of the welding line between the front cross beam branch pipe and the mounting sleeve, which helps to improve the connection strength between the front cross beam branch pipe and the mounting sleeve, and improves the overall strength and stability of the front cross beam.

[0009] Optionally, the length of the welding groove is 60% to 80% of the width of the end face of the front cross beam branch pipe.

[0010] By adopting the above technical scheme, the length of the welding groove is set to 60% to 80% of the width of the end face of the front cross beam branch pipe, so that the connection between the front cross beam branch pipe and the mounting sleeve is more uniform and stable while ensuring the ideal structural strength of the front cross beam branch pipe.

[0011] Optionally, the angle between the top surface of the welding groove and the bottom surface of the welding groove is 10° to 15° with the axis center of the mounting sleeve as the center.

[0012] By adopting the above technical scheme, the angle between the top surface of the welding groove and the bottom surface of the welding groove is controlled within the range of 10° to 15°, which can effectively increase the welding area, improve the welding strength, and improve the connection reliability between the front cross beam branch pipe and the mounting sleeve, thereby enhancing the structural stability and service life of the entire aluminum auxiliary frame.

[0013] Optionally, the mounting sleeve is symmetrically provided with a mounting through slot communicating with the inner cavity of the front cross beam branch pipe on both sides thereof towards the front cross beam branch pipe.

[0014] By adopting the above technical scheme, the mounting through slots at both ends of the mounting sleeve facilitate the production and demolding of the mounting sleeve, and can improve the lightweight effect of the auxiliary frame while ensuring the ideal structural strength of the front cross beam.

[0015] Optionally, the front cross beam branch pipe comprises a first branch pipe connected to one end of the mounting sleeve and a second branch pipe connected to the other end of the mounting sleeve, a first bushing sleeve is arranged at the end of the first branch pipe away from the mounting sleeve, a second bushing sleeve is arranged at the end of the second branch pipe away from the mounting sleeve, and the first bushing sleeve and the second bushing sleeve are respectively provided with a communication port communicating with the hollow chamber of the first branch pipe and the second branch pipe.

[0016] By adopting the above technical scheme, the structure of the front cross beam branch pipe is disclosed, and the first bushing sleeve and the second bushing sleeve facilitate the connection and installation of the aluminum auxiliary frame with other parts of the vehicle body, and the communication port helps to reduce the overall weight of the aluminum auxiliary frame and improve the lightweight effect of the aluminum auxiliary frame.

[0017] Optionally, the outer wall of the first bushing sleeve is provided with a first lug plate, and the outer wall of the second bushing sleeve is provided with a second lug plate; a circular through hole is formed in the first lug plate, and a waist-shaped hole is formed in the second lug plate.

[0018] By adopting the technical scheme, the first lug plate and the second lug plate are arranged to help the connection and cooperation of the aluminum sub-frame and other parts of the vehicle body, and the round through hole and the waist-shaped hole are arranged to help the adjustment of the installation of the aluminum sub-frame to realize accurate positioning.

[0019] Optionally, the first lug plate and the first bushing sleeve outer wall have a first circular arc angle at the connection, and the second lug plate and the second bushing sleeve outer wall have a second circular arc angle at the connection.

[0020] By adopting the technical scheme, the first circular arc angle is arranged to help provide the connection stability between the first lug plate and the first bushing sleeve, and the second circular arc angle is arranged to help improve the connection stability between the second lug plate and the second bushing sleeve, thereby effectively reducing the probability of breakage of the first lug plate and the second lug plate during use.

[0021] Optionally, the first lug plate and the second lug plate are sleeved with a protective sleeve.

[0022] By adopting the technical scheme, the protective sleeve is arranged to help reduce the probability of damage of the first lug plate and the second lug plate during transportation.

[0023] Optionally, the right longitudinal beam includes a first upper longitudinal beam and a first lower longitudinal beam, the two ends of the first upper longitudinal beam and the first lower longitudinal beam are connected, and the right longitudinal beam forms a first weight-reducing through groove between the first upper longitudinal beam and the first lower longitudinal beam; the left longitudinal beam includes a second upper longitudinal beam and a second lower longitudinal beam, the two ends of the second upper longitudinal beam and the second lower longitudinal beam are connected, and the left longitudinal beam forms a second weight-reducing through groove between the second upper longitudinal beam and the second lower longitudinal beam.

[0024] By adopting the technical scheme, the first weight-reducing through groove and the second weight-reducing through groove are arranged to reduce the weight of the right longitudinal beam and the left longitudinal beam, so that the aluminum sub-frame as a whole achieves the effect of light weight.

[0025] Optionally, the right longitudinal beam and the left longitudinal beam are respectively provided with a reinforcing block at the first weight-reducing through groove and the second weight-reducing through groove.

[0026] By adopting the technical scheme, the first reinforcing block and the second reinforcing block are arranged to help improve the structural strength of the right longitudinal beam and the left longitudinal beam at the first weight-reducing through groove and the second weight-reducing through groove, respectively, thereby reducing the probability of breakage of the right longitudinal beam and the left longitudinal beam.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. An aluminum subframe, by setting the welding camber, welding structure in the front beam support pipe, realizing the stable connection between the front beam support pipe and the mounting sleeve, wherein the setting of the welding groove increases the length of the welding line between the front beam support pipe and the mounting sleeve, helps to improve the structural stability between the front beam support pipe and the mounting sleeve, and reduces the probability of fracture at the connection between the front beam support pipe and the mounting sleeve.

[0029] 2. By setting the hollow structure of the aluminum subframe and setting the first and second weight reduction grooves, the overall weight of the aluminum subframe is reduced, achieving the effect of lightening the aluminum subframe.

[0030] 3. By setting the first and second arc angles, the connection between the first lug plate and the first bushing sleeve and the second lug plate and the second bushing sleeve is more stable, reducing the probability of fracture of the first and second lug plates during use. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the aluminum subframe in the embodiment of the present application.

[0032] Figure 2 is Figure 1 is a local enlarged view of A in

[0033] Figure 3 is a local cross-sectional view of the front beam support pipe and the mounting sleeve in the embodiment of the present application.

[0034] Figure 4 is a schematic diagram of the front beam in the embodiment of the present application.

[0035] Figure 5 is a structural schematic diagram of the left and right longitudinal beams in the embodiment of the present application.

[0036] Figure 6 is a structural schematic diagram of the first and second weight reduction grooves in the embodiment of the present application.

[0037] Explanation of reference signs: 1, frame; 11, front beam; 111, mounting sleeve; 1111, mounting slot; 112, front beam support pipe; 1121, welded arc surface; 1122, welded groove; 1123, welded convex part; 1124, first support pipe; 1125, second support pipe; 113, first bushing sleeve; 1131, first lug plate; 11311, circular through hole; 114, second bushing sleeve; 1141, second lug plate; 11411, waist-shaped hole; 115, communication opening; 116, protective sleeve; 117, circular arc corner; 12, rear beam; 13, left longitudinal beam; 131, second upper longitudinal beam; 132, second lower longitudinal beam; 133, second weight-reducing slot; 14, right longitudinal beam; 141, first upper longitudinal beam; 142, first lower longitudinal beam; 143, first weight-reducing slot; 15, reinforcing block; 2, thickening block. DETAILED DESCRIPTION

[0038] The following will be described in detail with reference to the accompanying drawings. Figures 1-6 The present application is further described in detail.

[0039] The embodiments of the present application disclose an aluminum auxiliary frame. Referring to Figure 1 The aluminum auxiliary frame comprises a frame 1 of a hollow structure. The frame 1 is in a frame shape as a whole, and comprises a front beam 11, a rear beam 12, a left longitudinal beam 13 connecting one side of the front beam 11 and the rear beam 12, and a right longitudinal beam 14 connecting the other side of the front beam 11 and the rear beam 12 and arranged opposite to the left longitudinal beam 13.

[0040] Referring to Figure 1 and Figure 2 The front beam 11 comprises a mounting sleeve 111 and front beam support pipes 112 symmetrically welded and fixed on both sides of the mounting sleeve 111, and the mounting sleeve 111 is symmetrically provided with mounting slots 1111 communicating with the inner cavities of the front beam support pipes 112 on both sides thereof. The front beam support pipes 112 have welded arc surfaces 1121 abutting the outer side portions of the mounting sleeve 111, and the front and rear sides of the welded arc surfaces 1121 of the front beam support pipes 112 are welded and fixed to the mounting sleeve 111. The upper and lower ends of the front beam support pipes 112 are further provided with welded structures comprising welded grooves 1122 and welded convex parts 1123 connected to both sides of the welded grooves 1122. The inner edges of the welded grooves 1122 abut the outer side walls of the mounting sleeve 111 and are fixed to the mounting sleeve 111 by welding, and the inner edges of the welded convex parts 1123 abut the outer side walls of the mounting sleeve 111 and are fixed to the mounting sleeve 111 by welding. In this embodiment, the welded grooves 1122 are in the shape of U-shaped grooves.

[0041] Referring to Figure 2 and Figure 3, in order to guarantee the structural strength of the front cross beam branch pipe 112 and improve the connection strength of the front cross beam branch pipe 112 and the mounting sleeve pipe 111, the length of the welding groove 1122 is 60% to 80% of the width of the end face of the front cross beam branch pipe 112, and the angle between the top surface of the welding groove 1122 and the bottom surface of the welding groove 1122 is 10° to 15° with the axis center of the mounting sleeve pipe 111 as the center. In this embodiment, the length of the welding groove 1122 is 60% of the width of the end face of the front cross beam branch pipe 112.

[0042] Referring to Figure 1 and Figure 4 , the front cross beam branch pipe 112 includes a first branch pipe 1124 connected to one end of the mounting sleeve pipe 111 and a second branch pipe 1125 symmetrically connected to the other end of the mounting sleeve pipe 111. Among them, the end of the first branch pipe 1124 and the second branch pipe 1125 away from the mounting sleeve pipe 111 is curved away from the direction of the rear cross beam 12. The end of the first branch pipe 1124 away from the mounting sleeve pipe 111 is also provided with a first bushing sleeve 113, and the outer side wall of the first bushing sleeve 113 is provided with a first lug plate 1131 and a circular through hole 11311 is formed in the first lug plate 1131. The end of the second branch pipe 1125 away from the mounting sleeve is provided with a second bushing sleeve 114, and the outer side wall of the second bushing sleeve 114 is provided with a second lug plate 1141 and a waist-shaped hole 11411 is formed in the second lug plate 1141. The first bushing sleeve 113 and the second bushing sleeve 114 are also respectively provided with a communication port 115 in communication with the hollow chamber of the first branch pipe 1124 and the second branch pipe 1125.

[0043] Referring to Figure 4 and Figure 5 , in order to improve the connection strength of the first lug plate 1131 and the first bushing sleeve 113 and the connection strength of the second lug plate 1141 and the second bushing sleeve 114, the connection between the first lug plate 1131 and the first bushing sleeve 113 has a first circular arc angle, and the connection between the second lug plate 1141 and the second bushing sleeve 114 has a second circular arc angle. Among them, the first circular arc angle and the second circular arc angle are the same angle of the circular arc angle 117. In order to reduce the probability of fracture of the first lug plate 1131 and the second lug plate 1141 during transportation, the first lug plate 1131 and the second lug plate 1141 are sleeved with a protective sleeve 116. In this embodiment, the material of the protective sleeve 116 is rubber.

[0044] Reference Figure 5 and Figure 6The right longitudinal beam 14 comprises a first upper longitudinal beam 141 and a first lower longitudinal beam 142. The first upper longitudinal beam 141 is arched upward, the first lower longitudinal beam 142 is concave downward, and the two ends of the first upper longitudinal beam 141 and the first lower longitudinal beam 142 are enclosed. The right longitudinal beam 14 forms a first lightening through groove 143 between the first upper longitudinal beam 141 and the first lower longitudinal beam 142. The left longitudinal beam 13 comprises a second upper longitudinal beam 131 and a second lower longitudinal beam 132. The second upper longitudinal beam 131 is arched upward, the second lower longitudinal beam 132 is concave downward, and the two ends of the second upper longitudinal beam 131 and the second lower longitudinal beam 132 are enclosed. The left longitudinal beam 13 forms a second lightening through groove 133 between the second upper longitudinal beam 131 and the second lower longitudinal beam 132. In order to ensure the structural strength of the right longitudinal beam 14 at the first lightening through groove 143, the right longitudinal beam 14 is provided with a first reinforcing block at the first lightening through groove 143. In order to ensure the structural strength of the left longitudinal beam 13 at the second lightening through groove 133, the left longitudinal beam 13 is provided with a second reinforcing block at the second lightening through groove 133. The first reinforcing block and the second reinforcing block are reinforcing blocks 15 arranged oppositely and having the same structure.

[0045] Reference Figure 1 And Figure 6 In order to ensure the structural strength of the aluminum auxiliary frame as a whole, the frame frame 1 is provided with a thickening block 2 at a key position, so that the thickness of the position is increased to improve the structural strength of the position.

[0046] The implementation principle of the aluminum auxiliary frame according to an embodiment of the present application is as follows: by arranging a welding groove 1122 and a welding convex part 1123 on the side of the front cross beam support pipe 112 facing the mounting sleeve pipe 111, the length of the welding line between the front cross beam support pipe 112 and the mounting sleeve pipe 111 is increased, which helps to improve the connection strength between the front cross beam support pipe 112 and the mounting sleeve pipe 111, and the overall strength and stability of the front cross beam 11 are improved. The arrangement of the first lightening groove and the second lightening groove helps to reduce the overall weight of the aluminum auxiliary frame, so as to achieve the effect of lightening the aluminum auxiliary frame. The arrangement of the reinforcing block 15 and the thickening block 2 helps to ensure the rigidity of the aluminum auxiliary frame as a whole.

[0047] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An aluminum subframe characterized by, The hollow frame (1) comprises a front cross beam (11), a rear cross beam (12), a left longitudinal beam (13) connecting the front cross beam (11) and the rear cross beam (12), and a right longitudinal beam (14) connecting the front cross beam (11) and the rear cross beam (12) and arranged opposite to the left longitudinal beam (13); the front cross beam (11) comprises a mounting sleeve (111) and a front cross beam branch pipe (112) symmetrically welded on both sides of the mounting sleeve (111); the front cross beam branch pipe (112) has a welded arc surface (1121) fitted to the mounting sleeve (111), and the front and rear sides of the welded arc surface (1121) are both welded and fixed to the mounting sleeve (111); the upper and lower ends of the front cross beam branch pipe (112) are both provided with a welding structure comprising a welding groove (1122) and a welding convex portion (1123) located on both sides of the welding groove (1122), and the inner edge of the welding groove (1122) abuts against and is welded and fixed to the mounting sleeve (111); the inner edge of the welding convex portion (1123) abuts against and is welded and fixed to the mounting sleeve (111).

2. The aluminum subframe of claim 1, wherein, The length of the welding groove (1122) is 60-80% of the width of the end face of the front cross beam branch pipe (112).

3. An aluminum subframe according to claim 2, wherein, The angle between the top surface of the welding groove (1122) and the bottom surface of the welding groove (1122) is 10-15° with the axis center of the mounting sleeve (111) as the center.

4. The aluminum subframe of claim 1, wherein, The mounting sleeve (111) is symmetrically provided with a mounting through slot (1111) communicating with the inner cavity of the front cross beam branch pipe (112) on both sides towards the front cross beam branch pipe (112).

5. The aluminum subframe of claim 1, wherein, The front cross beam branch pipe (112) comprises a first branch pipe (1124) connected to one end of the mounting sleeve (111) and a second branch pipe (1125) connected to the other end of the mounting sleeve (111), the first branch pipe (1124) is provided with a first bushing sleeve (113) at the end away from the mounting sleeve (111), the second branch pipe (1125) is provided with a second bushing sleeve (114) at the end away from the mounting sleeve (111), and the first bushing sleeve (113) and the second bushing sleeve (114) are respectively provided with a communication opening (115) communicating with the hollow chamber of the first branch pipe (1124) and the second branch pipe (1125).

6. An aluminum subframe according to claim 5, wherein, The outer wall of the first bushing sleeve (113) is provided with a first lug plate (1131), and the outer wall of the second bushing sleeve (114) is provided with a second lug plate (1141); a circular through hole (11311) is formed in the first lug plate (1131), and a waist-shaped hole (11411) is formed in the second lug plate (1141).

7. An aluminum subframe according to claim 6, wherein The connection of the first lug plate (1131) and the outer wall of the first bushing sleeve (113) and the connection of the second lug plate (1141) and the outer wall of the second bushing sleeve (114) are both provided with a circular arc angle (117).

8. An aluminum subframe according to claim 7, wherein, The first lug plate (1131) and the second lug plate (1141) are externally provided with a protective sleeve (116).

9. The aluminum subframe of claim 1, wherein, The right longitudinal beam (14) comprises a first upper longitudinal beam (141) and a first lower longitudinal beam (142), the two ends of the first upper longitudinal beam (141) and the first lower longitudinal beam (142) are connected, and the right longitudinal beam (14) forms a first weight-reducing through groove (143) between the first upper longitudinal beam (141) and the first lower longitudinal beam (142); the left longitudinal beam (13) comprises a second upper longitudinal beam (131) and a second lower longitudinal beam (132), the two ends of the second upper longitudinal beam (131) and the second lower longitudinal beam (132) are connected, and the left longitudinal beam (13) forms a second weight-reducing through groove (133) between the second upper longitudinal beam (131) and the second lower longitudinal beam (132).

10. An aluminum subframe according to claim 9, wherein, The right longitudinal beam (14) and the left longitudinal beam (13) are respectively provided with a reinforcing block (15) at the first weight-reducing through groove (143) and the second weight-reducing through groove (133).

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