Aluminum alloy vehicle body framework

Abstract

The invention discloses an aluminum alloy vehicle body framework which comprises a vehicle body base frame, the vehicle body base frame comprises a plurality of bearing main frames, the bearing main frames are arranged in the length direction of a vehicle body, the plurality of bearing main frames are arranged in parallel, and the plurality of bearing main frames are sequentially provided with a plurality of positioning mounting frames from one end to the other end; the plurality of bearing main frames are fixedly connected through the plurality of positioning mounting frames; the multiple bearing main frames and the multiple positioning mounting frames form a vehicle body, and the front wheel frames, the second treading frames and the rear wheel frames are sequentially arranged on the two sides of the vehicle body from the front end to the rear end. According to the aluminum alloy vehicle body framework, through the cooperative design of multiple structures, the overall structural strength of the vehicle body framework is effectively guaranteed, the overall structure is stable and firm, the structure is compact, aluminum alloy materials are used for replacing steel to serve as manufacturing materials of the middle bus body framework and covering parts, and the manufacturing cost is reduced. And the self weight of the vehicle body is greatly reduced on the premise of ensuring the rigidity and the strength.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly relates to an aluminum alloy vehicle body frame. Background Art

[0002] Urban buses are the main means of daily travel for people. As the number of travelers increases day by day, the bus network has spread to every corner of the city. While the domestic bus market is becoming increasingly saturated, each bus enterprise is working hard to develop emerging foreign markets, and more and more Chinese buses are running on the roads of various countries.

[0003] At present, the body of medium-sized buses in China generally adopts the technical route of a steel skeleton plus an outer skin. Medium-sized buses generally have the problem of heavy weight; and the structural strength of the left and right sides and the top enclosure skeleton is reduced. The body of a medium-sized bus designed in the above manner has a large self-weight, which will not only cause waste of parts materials, but also reduce the power performance and economy of the whole vehicle. Therefore, the present application proposes an aluminum alloy vehicle body frame to provide a new technical solution to solve the above-mentioned technical problems. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide an aluminum alloy vehicle body frame. Through the cooperative design of multiple structures, the overall structural strength of the vehicle body frame is effectively ensured, and the overall structure is relatively stable and firm, with a compact structure. By using aluminum alloy materials instead of steel as the manufacturing materials for the medium-sized bus body frame and covering parts, the self-weight of the vehicle body is significantly reduced while ensuring the stiffness and strength.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An aluminum alloy vehicle body frame, which is applied to an automobile body frame.

[0007] The aluminum alloy vehicle body frame specifically includes:

[0008] A vehicle body base frame, the vehicle body base frame includes a load-bearing main frame, the load-bearing main frame is arranged along the length direction of the vehicle body, the number of the load-bearing main frames is multiple, the multiple load-bearing main frames are arranged in parallel, a plurality of positioning and mounting frames are sequentially arranged on the multiple load-bearing main frames from one end to the other end, and the multiple load-bearing main frames are fixedly connected through the multiple positioning and mounting frames; the multiple load-bearing main frames and the multiple positioning and mounting frames form a vehicle body main body, and a front wheel frame, a second pedal frame, and a rear wheel frame are sequentially arranged on both sides of the vehicle body main body from the front end to the rear end. The front wheel frame, the second pedal frame, and the rear wheel frame are fixedly connected to the vehicle body main body through the positioning and mounting frames at the corresponding positions. A first pedal frame is fixedly connected to the front end of one side of the vehicle body main body through the positioning and mounting frame at the corresponding position, and a rear bracket is fixedly connected to the rear end of the vehicle body main body;

[0009] Side enclosing frames are arranged at positions on both sides of the vehicle body frame. The two side enclosing frames are symmetrically arranged. The side enclosing frame includes a side main frame. At the front end inside the side main frame, a front door frame is provided. In the middle inside the side main frame, a rear door frame is provided. At the rear end inside the side main frame, a rear side frame is provided. At a position between the front door frame and the rear door frame inside the side main frame, a front wheel frame is provided. The front wheel frame is located close to the front door frame. At a position between the rear door frame and the rear side frame inside the side main frame, a rear wheel frame is provided. The rear wheel frame is located close to the rear side frame. Reinforcing plate bodies I are fixedly connected above the front wheel frame and the rear wheel frame inside the side main frame. Reinforcing plate bodies II are fixedly connected at positions below both sides of the rear door frame inside the side main frame. A reinforcing plate body III is fixedly connected above the rear door frame inside the side main frame.

[0010] A top enclosing frame is arranged at a position above the vehicle body frame. Both sides of the top enclosing frame are fixedly connected to the two side enclosing frames respectively. The top enclosing frame includes a front top frame, a top window frame, a connecting frame, a reinforcing beam, and a tail beam. The front top frame, the top window frame, the connecting frame, the reinforcing beam, and the tail beam are arranged in sequence from the head direction to the tail direction of the vehicle. The front top frame and the top window frame are fixedly connected through a first protective plate body. The top window frame and the connecting frame are fixedly connected through a second protective plate body. The connecting frame and the reinforcing beam are fixedly connected through a third protective plate body. The reinforcing beam and the tail beam are fixedly connected through a fourth protective plate body.

[0011] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, a front protective frame is arranged at a position above the vehicle body frame and between the front ends of the two side enclosing frames. Front positioning mounting seats are fixedly connected to the front ends of the two side enclosing frames respectively. Both ends of the front protective frame are fixedly connected to the side enclosing frames through the front positioning mounting seats. The front positioning mounting seats are inclined towards the front protective frame. A rear protective frame is arranged at a position above the vehicle body frame and between the rear ends of the two side enclosing frames. Both ends of the rear protective frame are fixedly connected to the side enclosing frame at the same end.

[0012] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, the rear protective frame includes a rear protective beam and a rear seat bracket. The rear protective beam is located between the two side enclosing frames. Rear positioning mounting seats are fixedly connected to the rear ends of the side enclosing frames at positions corresponding to the rear protective beam. Both ends of the rear protective beam are fixedly connected to the rear positioning mounting seats at the same end. The rear seat bracket is located between the two side enclosing frames. The rear seat bracket is located above the middle-rear bracket of the vehicle body frame. Both ends of the rear seat bracket are fixedly connected to the side enclosing frame at the same end.

[0013] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, a plurality of hollow through grooves are provided on the first reinforcing plate body, the second reinforcing plate body, the third reinforcing plate body, the first protective plate body, the second protective plate body, the third protective plate body, and the fourth protective plate body.

[0014] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, a first upper positioning mounting seat and a second upper positioning mounting seat are fixedly connected to the front of the upper end of the side surrounding frame, and both ends of the front top frame are fixedly connected to the side surrounding frame at the same end through the first upper positioning mounting seat and the second upper positioning mounting seat.

[0015] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, a first top positioning mounting seat, a second top positioning mounting seat, and a third top positioning mounting seat are fixedly connected to the upper end of the side surrounding frame at positions corresponding to the connecting frame, the reinforcing beam, and the tail beam respectively, and the end parts of the connecting frame, the reinforcing beam, and the tail beam are fixedly connected to the side surrounding frame through the first top positioning mounting seat, the second top positioning mounting seat, and the third top positioning mounting seat at the same end respectively.

[0016] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, the number of the main bearing frames is at least three, and the number of the positioning mounting frames is at least seven. Among them, three of the positioning mounting frames are respectively used for the fixed connection of the first pedal frame and the front wheel frame, two of the positioning mounting frames are used for the fixed connection of the second pedal frame, and the remaining two positioning mounting frames are used for the fixed connection of the rear wheel frame.

[0017] As a preferred embodiment of the aluminum alloy vehicle body frame provided by the present invention, the vehicle body base frame and the side surrounding frame, the side surrounding frame and the top surrounding frame, the front protective frame and the side surrounding frame, and the rear protective frame and the side surrounding frame are all fixedly connected by welding and rivets.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] For the aluminum alloy vehicle body frame provided by the present invention, through the cooperative design of multiple structures, the overall structural strength of the vehicle body frame is effectively ensured, and the overall structure is relatively stable and firm, and the structure is compact. By using aluminum alloy materials instead of steel as the production materials for the minibus body frame and the covering parts, the self-weight of the vehicle body is greatly reduced on the premise of ensuring the stiffness and strength.

[0020] For the aluminum alloy vehicle body frame provided by the present invention, through the cooperation of the first reinforcing plate body, the second reinforcing plate body, the third reinforcing plate body, the first protective plate body, the second protective plate body, the third protective plate body, and the fourth protective plate body, the structural stability and structural strength of the vehicle body frame can be further improved, the installation and protection effect of the vehicle body can be effectively improved, and the hollow design can reduce the production materials and unnecessary mass addition. Brief Description of the Drawings

[0021] To more clearly illustrate the solutions in the present invention, the following will give a brief introduction to the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the aluminum alloy vehicle body frame provided by the present invention;

[0023] Figure 2 It is an exploded view of the overall structure of the aluminum alloy vehicle body frame provided by the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the vehicle body base frame of the aluminum alloy vehicle body frame provided by the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the side enclosure frame of the aluminum alloy vehicle body frame provided by the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the top enclosure frame of the aluminum alloy vehicle body frame provided by the present invention;

[0027] Figure 6 It is a schematic diagram of the structures of the front protection frame and the rear protection frame of the aluminum alloy vehicle body frame provided by the present invention.

[0028] The markings in the figures are described as follows:

[0029] 1. Vehicle body base frame; 2. Side enclosure frame; 3. Top enclosure frame; 4. Front protection frame; 5. Rear protection frame; 6. Main load-bearing frame; 7. Positioning and mounting frame; 8. First stepping frame; 9. Front wheel frame; 10. Second stepping frame; 11. Rear wheel frame; 12. Rear bracket; 13. Side main frame; 14. Front door frame; 15. Front wheel frame; 16. Rear door frame; 17. Rear wheel frame; 18. Rear side frame; 19. Reinforcing plate body one; 20. Reinforcing plate body two; 21. Reinforcing plate body three; 22. Front top frame; 23. Top window frame; 24. Connecting frame; 25. Reinforcing beam; 26. Tail beam; 27. Protection plate body one; 28. Protection plate body two; 29. Protection plate body three; 30. Protection plate body four; 31. Front positioning and mounting seat; 32. Upper positioning and mounting seat one; 33. Upper positioning and mounting seat two; 34. Top positioning and mounting seat one; 35. Top positioning and mounting seat two; 36. Top positioning and mounting seat three; 37. Rear positioning and mounting seat; 38. Rear protection beam; 39. Rear seat bracket. Detailed Embodiments

[0030] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] As described in the background art, at present, the body of domestic minibuses generally adopts the technical route of a steel skeleton plus an outer skin. Minibuses generally have the problem of heavy weight; and the structural strength of the left and right sides and the top enclosure skeleton is reduced. The body of the minibus designed in the above manner has a large self-weight, which will not only cause waste of parts materials, but also reduce the power performance and economy of the whole vehicle.

[0032] To solve this technical problem, the present invention provides an aluminum alloy body skeleton, which is applied to an automobile body skeleton.

[0033] Specifically, please refer to Figure 1 - Figure 6 , the aluminum alloy body skeleton specifically includes:

[0034] A vehicle body base frame 1, the vehicle body base frame 1 includes a load-bearing main frame 6, the load-bearing main frame 6 is arranged along the length direction of the vehicle body, the number of the load-bearing main frames 6 is multiple, the multiple load-bearing main frames 6 are arranged in parallel, and a plurality of positioning and mounting frames 7 are sequentially arranged on the multiple load-bearing main frames 6 from one end to the other end. The multiple load-bearing main frames 6 are fixedly connected through the multiple positioning and mounting frames 7; the multiple load-bearing main frames 6 and the multiple positioning and mounting frames 7 form a vehicle body main body, and a front wheel frame 9, a second pedal frame 10, and a rear wheel frame 11 are sequentially arranged on both sides of the vehicle body main body from the front end to the rear end. The front wheel frame 9, the second pedal frame 10, and the rear wheel frame 11 are all fixedly connected to the vehicle body main body through the positioning and mounting frames 7 at corresponding positions. A first pedal frame 8 is fixedly connected to the front end of one side of the vehicle body main body through the positioning and mounting frame 7 at the corresponding position, and a rear bracket 12 is fixedly connected to the rear end of the vehicle body main body;

[0035] Side enclosing frame 2, which is arranged at the positions on both sides of the vehicle body frame 1, and the two side enclosing frames 2 are symmetrically arranged. The side enclosing frame 2 includes a side main frame 13. At the front end inside the side main frame 13, there is a front door frame 14. In the middle part inside the side main frame 13, there is a rear door frame 16. At the rear end inside the side main frame 13, there is a rear side frame 18. Inside the side main frame 13 and at the position between the front door frame 14 and the rear door frame 16, there is a front wheel frame 15, and the front wheel frame 15 is located close to the front door frame 14. Inside the side main frame 13 and at the position between the rear door frame 16 and the rear side frame 18, there is a rear wheel frame 17, and the rear wheel frame 17 is located close to the rear side frame 18. On the inside of the side main frame 13 above the front wheel frame 15 and the rear wheel frame 17, there are reinforcing plate bodies 19 fixedly connected. On the inside of the side main frame 13 and at the positions on the lower parts on both sides of the rear door frame 16, there are reinforcing plate bodies 20 fixedly connected. On the inside of the side main frame 13 and at the position above the rear door frame 16, there is a reinforcing plate body 21 fixedly connected.

[0036] Top enclosing frame 3, which is arranged at the position above the vehicle body frame 1. The two sides of the top enclosing frame 3 are respectively fixedly connected to the two side enclosing frames 2. The top enclosing frame 3 includes a front top frame 22, a top window frame 23, a connecting frame 24, a reinforcing beam 25, and a tail beam 26. The front top frame 22, the top window frame 23, the connecting frame 24, the reinforcing beam 25, and the tail beam 26 are arranged in sequence from the head direction to the tail direction. The front top frame 22 and the top window frame 23 are fixedly connected through a first protective plate body 27. The top window frame 23 and the connecting frame 24 are fixedly connected through a second protective plate body 28. The connecting frame 24 and the reinforcing beam 25 are fixedly connected through a third protective plate body 29. The reinforcing beam 25 and the tail beam 26 are fixedly connected through a fourth protective plate body 30.

[0037] The aluminum alloy vehicle body skeleton provided by the present invention, through the cooperative design of multiple structures, effectively ensures the overall structural strength of the vehicle body skeleton, and the overall structure is relatively stable and firm, with a compact structure. By using aluminum alloy materials instead of steel as the manufacturing materials for the minibus body skeleton and covering parts, the self-weight of the vehicle body is significantly reduced on the premise of ensuring stiffness and strength.

[0038] In order to enable the personnel in the technical field to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] Please refer to Figure 1 - Figure 6 A kind of aluminum alloy vehicle body skeleton, which includes:

[0041] Vehicle body frame 1, the vehicle body frame 1 includes a load-bearing main frame 6. The load-bearing main frame 6 is arranged along the vehicle body length direction, and the number of the load-bearing main frames 6 is multiple. The multiple load-bearing main frames 6 are arranged in parallel, and a plurality of positioning and mounting frames 7 are sequentially arranged from one end to the other end of the multiple load-bearing main frames 6. The multiple load-bearing main frames 6 are fixedly connected through the multiple positioning and mounting frames 7. The multiple load-bearing main frames 6 and the multiple positioning and mounting frames 7 form the vehicle body main body. On both sides of the vehicle body main body, a front wheel frame 9, a second pedal frame 10, and a rear wheel frame 11 are sequentially arranged from the front end to the rear end. The front wheel frame 9, the second pedal frame 10, and the rear wheel frame 11 are all fixedly connected to the vehicle body main body through the positioning and mounting frames 7 at the corresponding positions. The front end of one side of the vehicle body main body is fixedly connected with a first pedal frame 8 through the positioning and mounting frame 7 at the corresponding position, and the rear end of the vehicle body main body is fixedly connected with a rear bracket 12. It can be seen that the overall support of the vehicle body skeleton is realized through the load-bearing main frame 6 and the positioning and mounting frame 7, the pedal support for people to get on and off the vehicle is realized through the first pedal frame 8 and the second pedal frame 10, the positioning and protection of the wheels are realized through the front wheel frame 9 and the rear wheel frame 11, and the support of the vehicle body tail equipment is realized through the rear bracket 12.

[0042] Side enclosing frame 2, which is arranged at the positions on both sides of the vehicle body frame 1. The two side enclosing frames 2 are symmetrically arranged. The side enclosing frame 2 includes a side main frame 13. At the front end inside the side main frame 13, a front door frame 14 is arranged. In the middle inside the side main frame 13, a rear door frame 16 is arranged. At the rear end inside the side main frame 13, a rear side frame 18 is arranged. Inside the side main frame 13 and at the position between the front door frame 14 and the rear door frame 16, a front wheel frame 15 is arranged. The front wheel frame 15 is located at a position close to the front door frame 14. Inside the side main frame 13 and at the position between the rear door frame 16 and the rear side frame 18, a rear wheel frame 17 is arranged. The rear wheel frame 17 is located at a position close to the rear side frame 18. On the inner side of the side main frame 13 and above the front wheel frame 15 and the rear wheel frame 17, a first reinforcing plate body 19 is fixedly connected. On the inner side of the side main frame 13 and at the positions of the lower parts on both sides of the rear door frame 16, a second reinforcing plate body 20 is fixedly connected. On the inner side of the side main frame 13 and at the position above the rear door frame 16, a third reinforcing plate body 21 is fixedly connected. It can be seen that the installation and fixation of the front door frame 14, the front wheel frame 15, the rear door frame 16, the rear wheel frame 17, and the rear side frame 18 are realized through the side main frame 13, and the structural strength of the side enclosing frame 2 can be effectively improved through the first reinforcing plate body 19, the second reinforcing plate body 20, and the third reinforcing plate body 21;

[0043] The top surrounding frame 3 is disposed at a position above the vehicle body frame 1. The two sides of the top surrounding frame 3 are respectively fixedly connected to two side surrounding frames 2. The top surrounding frame 3 includes a front top frame 22, a top window frame 23, a connecting frame 24, a reinforcing beam 25, and a tail beam 26. The front top frame 22, the top window frame 23, the connecting frame 24, the reinforcing beam 25, and the tail beam 26 are arranged in sequence from the vehicle head direction to the vehicle tail direction. The front top frame 22 and the top window frame 23 are fixedly connected by a first protective plate body 27. The top window frame 23 and the connecting frame 24 are fixedly connected by a second protective plate body 28. The connecting frame 24 and the reinforcing beam 25 are fixedly connected by a third protective plate body 29. The reinforcing beam 25 and the tail beam 26 are fixedly connected by a fourth protective plate body 30. The protection of the top of the vehicle head can be achieved through the front top frame 22. The installation and support of the roof window can be achieved through the top window frame 23. The stability of the rear half of the vehicle body can be improved through the connecting frame 24, the reinforcing beam 25, and the tail beam 26. At the same time, the structural strength of the top of the vehicle body can be effectively improved through the first protective plate body 27, the second protective plate body 28, the third protective plate body 29, and the fourth protective plate body 30.

[0044] Furthermore, a plurality of hollow through grooves are formed in the first reinforcing plate body 19, the second reinforcing plate body 20, the third reinforcing plate body 21, the first protective plate body 27, the second protective plate body 28, the third protective plate body 29, and the fourth protective plate body 30, so as to effectively reduce the production cost and the overall mass of the vehicle body.

[0045] Furthermore, a front protective frame 4 is disposed at a position above the vehicle body frame 1 and between the front ends of the two side surrounding frames 2. Front positioning mounting seats 31 are fixedly connected to the front ends of the two side surrounding frames 2. Both ends of the front protective frame 4 are fixedly connected to the side surrounding frames 2 through the front positioning mounting seats 31. The front positioning mounting seats 31 are inclined towards the front protective frame 4. A rear protective frame 5 is disposed at a position above the vehicle body frame 1 and between the rear ends of the two side surrounding frames 2. Both ends of the rear protective frame 5 are fixedly connected to the side surrounding frames 2 at the same end. The structural strength and protection of the front end and the rear end of the vehicle body can be effectively improved through the front protective frame 4 and the rear protective frame 5. The positioning and installation of the front protective frame 4 can be achieved through the front positioning mounting seats 31.

[0046] Among them, the rear protection frame 5 includes a rear protection beam 38 and a rear seat bracket 39. The rear protection beam 38 is located at a position between the two side enclosing frames 2. At the rear end of the side enclosing frame 2 and at a position corresponding to the rear protection beam 38, a rear positioning mount 37 is fixedly connected. The ends of the rear protection beam 38 are fixedly connected to the rear positioning mounts 37 at the same end; the rear seat bracket 39 is located at a position between the two side enclosing frames 2, and the rear seat bracket 39 is located above the rear bracket 12 in the vehicle body frame 1. The two ends of the rear seat bracket 39 are fixedly connected to the side enclosing frames 2 at the same end. Through the rear protection beam 38, the connection of the tails of the two side enclosing frames 2 can be realized, improving the structural stability. At the same time, through the rear protection beam 38, the protection effect of the vehicle body tail can be ensured, and the positioning and installation of the rear protection beam 38 can be realized through the rear positioning mounts 37; through the rear seat bracket 39, the support of the rear seat of the vehicle body can be realized.

[0047] Embodiment 2:

[0048] The aluminum alloy vehicle body frame provided in Embodiment 1 is further optimized. Specifically, as Figures 4 - 6 shown, a first upper positioning mount 32 and a second upper positioning mount 33 are fixedly connected to the front of the upper ends of the side enclosing frames 2. Both ends of the front top frame 22 are fixedly connected to the side enclosing frames 2 at the same end through the first upper positioning mount 32 and the second upper positioning mount 33. Among them, at positions corresponding to the connecting frame 24, the reinforcing beam 25, and the tail beam 26 at the upper end of the side enclosing frame 2, a first top positioning mount 34, a second top positioning mount 35, and a third top positioning mount 36 are fixedly connected respectively. The ends of the connecting frame 24, the reinforcing beam 25, and the tail beam 26 are fixedly connected to the side enclosing frame 2 through the first top positioning mount 34, the second top positioning mount 35, and the third top positioning mount 36 at the same end respectively.

[0049] Through the above structural design, the positioning and installation of the front top frame 22 are realized through the first upper positioning mount 32 and the second upper positioning mount 33, and the positioning and installation of the connecting frame 24, the reinforcing beam 25, and the tail beam 26 are realized through the first top positioning mount 34, the second top positioning mount 35, and the third top positioning mount 36.

[0050] Embodiment 3:

[0051] The aluminum alloy vehicle body frame provided in Embodiment 1 is further optimized. Specifically, as Figure 3 shown, the number of the main load-bearing frames 6 is at least three, and the number of the positioning and installation frames 7 is at least seven. Among them, three positioning and installation frames 7 are respectively used for the fixed connection of the first stepping frame 8 and the front wheel frame 9, two positioning and installation frames 7 are used for the fixed connection of the second stepping frame 10, and the remaining two positioning and installation frames 7 are used for the fixed connection of the rear wheel frame 11.

[0052] Through the above structural design, the structural strength of the vehicle body frame 1 can be effectively ensured, and the positioning and installation of the first pedal frame 8, the front wheel frame 9, the second pedal frame 10, and the rear wheel frame 11 are facilitated through the positioning and installation frame 7.

[0053] Embodiment 4:

[0054] The aluminum alloy vehicle body skeleton provided in Embodiment 1 is further optimized. Specifically, the vehicle body frame 1 and the side enclosure frame 2, the side enclosure frame 2 and the top enclosure frame 3, the front protection frame 4 and the side enclosure frame 2, and the rear protection frame 5 and the side enclosure frame 2 are all fixedly connected by welding and rivets.

Claims

1. An aluminum alloy vehicle body frame, characterized in that: include: A vehicle body base frame (1), the vehicle body base frame (1) comprises a load-bearing main frame (6), the load-bearing main frame (6) is arranged along the length direction of the vehicle body, the number of the load-bearing main frames (6) is multiple, the multiple load-bearing main frames (6) are arranged in parallel, the multiple load-bearing main frames (6) are sequentially provided with multiple positioning mounting frames (7) from one end to the other end, the multiple load-bearing main frames (6) are fixedly connected through the multiple positioning mounting frames (7); the multiple load-bearing main frames (6) and the multiple positioning mounting frames (7) constitute a vehicle body, the two sides of the vehicle body are sequentially provided with a front wheel frame (9), a second pedal frame (10), and a rear wheel frame (11) from the front end to the rear end, the front wheel frame (9), the second pedal frame (10), and the rear wheel frame (11) are all fixedly connected to the vehicle body through the positioning mounting frames (7) at corresponding positions, the front end of one side of the vehicle body is fixedly connected to the first pedal frame (8) through the positioning mounting frames (7) at corresponding positions, and the rear end of the vehicle body is fixedly connected to the rear bracket (12); A side enclosure frame (2) is arranged at positions on both sides of the vehicle body base frame (1), and the two side enclosure frames (2) are symmetrically arranged. The side enclosure frame (2) includes a side main frame (13), a front door frame (14) is arranged at the inner front end of the side main frame (13), a rear door frame (16) is arranged at the inner middle part of the side main frame (13), a rear side frame (18) is arranged at the inner rear end of the side main frame (13), a front wheel frame (15) is arranged at the inner side of the side main frame (13) and between the front door frame (14) and the rear door frame (16), and the front wheel frame (15) is located near the front door frame (14). A rear wheel frame (17) is arranged on the inner side of the side main frame (13) and located between the rear door frame (16) and the rear side frame (18), and the rear wheel frame (17) is located near the rear side frame (18); a reinforcing plate body 1 (19) is fixedly connected to the inner side of the side main frame (13) and located above the front wheel frame (15) and the rear wheel frame (17); a reinforcing plate body 2 (20) is fixedly connected to the inner side of the side main frame (13) and located at the lower part of both sides of the rear door frame (16); and a reinforcing plate body 3 (21) is fixedly connected to the inner side of the side main frame (13) and located above the rear door frame (16); A top enclosure frame (3) is arranged at a position above the vehicle body base frame (1), and the two sides of the top enclosure frame (3) are respectively fixedly connected to the two side enclosure frames (2), and the top enclosure frame (3) comprises a front top frame (22), a top window frame (23), a connecting frame (24), a reinforcing beam (25), and a tail beam (26). The front top frame (22), the top window frame (23), the connecting frame (24), the reinforcing beam (25), and the tail beam (26) are arranged in sequence from the front direction to the rear direction of the vehicle; the front top frame (22) and the top window frame (23) are fixedly connected by a protective plate body 1 (27), the top window frame (23) and the connecting frame (24) are fixedly connected by a protective plate body 2 (28), the connecting frame (24) and the reinforcing beam (25) are fixedly connected by a protective plate body 3 (29), and the reinforcing beam (25) and the tail beam (26) are fixedly connected by a protective plate body 4 (30).

2. The aluminum alloy vehicle body frame according to claim 1, characterized in that: A front protective frame (4) is arranged above the vehicle body base frame (1) and between the front ends of the two side enclosure frames (2); the front ends of the two side enclosure frames (2) are fixedly connected to front positioning mounting seats (31); both ends of the front protective frame (4) are fixedly connected to the side enclosure frames (2) via the front positioning mounting seats (31); the front positioning mounting seats (31) are arranged obliquely toward the front protective frame (4); a rear protective frame (5) is arranged above the vehicle body base frame (1) and between the rear ends of the two side enclosure frames (2); both ends of the rear protective frame (5) are fixedly connected to the side enclosure frames (2) at the same end.

3. The aluminum alloy vehicle body frame according to claim 2, characterized in that: The rear protective frame (5) comprises a rear protective beam (38) and a rear seat bracket (39), wherein the rear protective beam (38) is located between the two side enclosure frames (2), a rear positioning mounting seat (37) is fixedly connected to the rear end of the side enclosure frame (2) and at a position corresponding to the rear protective beam (38), and both ends of the rear protective beam (38) are fixedly connected to the rear positioning mounting seat (37) at the same end; the rear seat bracket (39) is located between the two side enclosure frames (2), and the rear seat bracket (39) is located above the rear bracket (12) in the vehicle body base frame (1), and both ends of the rear seat bracket (39) are fixedly connected to the side enclosure frames (2) at the same end.

4. The aluminum alloy vehicle body frame according to claim 1, characterized in that: The reinforcing plate body 1 (19), the reinforcing plate body 2 (20), the reinforcing plate body 3 (21), the protective plate body 1 (27), the protective plate body 2 (28), the protective plate body 3 (29) and the protective plate body 4 (30) are all provided with a plurality of hollow through grooves.

5. The aluminum alloy vehicle body frame according to claim 1, characterized in that: The front of the upper end of the side enclosure frame (2) is fixedly connected with an upper positioning mounting seat 1 (32) and an upper positioning mounting seat 2 (33), and both ends of the front top frame (22) are fixedly connected to the side enclosure frame (2) at the same end through the upper positioning mounting seat 1 (32) and the upper positioning mounting seat 2 (33).

6. The aluminum alloy vehicle body frame according to claim 1, characterized in that: A top positioning mounting seat 1 (34), a top positioning mounting seat 2 (35) and a top positioning mounting seat 3 (36) are respectively fixedly connected at the upper end of the side enclosure frame (2) and at positions corresponding to the connecting frame (24), the reinforcing beam (25) and the tail beam (26); and the ends of the connecting frame (24), the reinforcing beam (25) and the tail beam (26) are respectively fixedly connected to the side enclosure frame (2) via the top positioning mounting seat 1 (34), the top positioning mounting seat 2 (35) and the top positioning mounting seat 3 (36) at the same end.

7. The aluminum alloy vehicle body frame according to claim 1, characterized in that: The number of the main bearing frames (6) is at least three, and the number of the positioning mounting frames (7) is at least seven, wherein three of the positioning mounting frames (7) are respectively used for fixed connection with the first pedal frame (8) and the front wheel frame (9), two of the positioning mounting frames (7) are used for fixed connection with the second pedal frame (10), and the remaining two positioning mounting frames (7) are used for fixed connection with the rear wheel frame (11).

8. The aluminum alloy vehicle body frame according to claim 1, characterized in that: The vehicle body base frame (1) and the side enclosure frame (2), the side enclosure frame (2) and the top enclosure frame (3), the front protection frame (4) and the side enclosure frame (2), and the rear protection frame (5) and the side enclosure frame (2) are all fixedly connected by welding and rivets.

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