Aluminum alloy frame of new energy light truck

Abstract

The utility model belongs to the technical field of light trucks, and particularly relates to a new energy light truck aluminum alloy frame which comprises a truck body bottom plate, a truck head bottom plate arranged at the front end of the truck body bottom plate, two longitudinal beams symmetrically arranged on the lower portion of the truck body bottom plate and a transverse plate connected with the bottom ends of the two longitudinal beams. A cavity is defined by the vehicle body bottom plate, the two longitudinal beams and the transverse plate. The cavity is used for placing a battery pack; the longitudinal beam is of an integrated extrusion forming structure, the section of the longitudinal beam is in a T shape, and the longitudinal beam comprises an upper end plate, a vertical longitudinal beam and a lower end plate. After integration, no auxiliary frame structure is arranged, so that the overall height of a vehicle body is reduced, wind resistance can be effectively reduced, and more energy is saved; the cavity structure in the middle of the frame is integrally designed, the battery pack is arranged at the cavity structure, the safety of the battery pack is improved, a battery pack support of an original structure is omitted, the utilization rate of the internal space of the frame is improved, the problem of stress concentration at the connecting position of the transverse beam and the longitudinal beam is solved, the overall strength of the frame is improved, and the light-weight requirement of a light truck is further met.

Description

Technical Field

[0001] The utility model belongs to the technical field of light trucks, and specifically relates to an aluminum alloy frame for a new energy light truck. Background Art

[0002] With the continuous advancement of the "dual carbon" policy, new energy trucks have entered a period of rapid development. At the same time, under the premise of meeting the load-bearing requirements, there is an urgent need for truck lightweighting. As the core load-bearing component of the truck, the frame accounts for nearly 10% of the vehicle's mass and has always been one of the main goals of truck lightweighting. At present, the light truck frame uses the traditional oil-to-electric structure. However, new energy light trucks do not need engines, fuel tanks and other components. This structural design cannot fully match the new energy truck model, has not been adjusted according to the body layout of new energy light trucks, and cannot meet the demand for automobile lightweighting. The existing oil-to-electric frame structure of light trucks uses steel or 6 series aluminum alloy materials. The two structures are basically the same. Both use rolled channel steel or channel aluminum as longitudinal beams. The floor, subframe crossbeams, subframe longitudinal beams, frame crossbeams, frame longitudinal beams and other accessories are connected to the traditional frame structure through U-bolts. The floor, subframe and frame are stacked in three layers. On the one hand, this design makes the height of the vehicle too high and the wind resistance is large. On the other hand, due to the poor utilization of the internal space of the frame, the battery pack is suspended and installed on both sides of the longitudinal beam, which poses a safety problem. In addition, there is a stress concentration problem at the connection between the frame crossbeam and longitudinal beam, which affects the overall strength of the frame and cannot fully meet the requirements of new energy light truck models. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a new energy light truck aluminum alloy frame, and the specific technical solution is as follows:

[0004] A new energy light truck aluminum alloy frame comprises a body floor, a front floor arranged at the front end of the body floor, two longitudinal beams symmetrically arranged at the lower part of the body floor, and a cross plate connecting the bottom ends of the two longitudinal beams; the body floor, the two longitudinal beams and the cross plate enclose a cavity; the cavity is used to place a battery pack.

[0005] Furthermore, the longitudinal beam is an integrated extruded structure, and the cross section of the longitudinal beam is "T"-shaped, including an upper end plate, a vertical longitudinal beam and a lower end plate.

[0006] Furthermore, the vehicle body floor panel includes a middle vehicle body floor panel formed by a number of vehicle body floor panel units fixedly connected in the same horizontal plane, an upper end plate, and an outer vehicle body floor panel formed by a number of vehicle body floor panel units fixedly connected in the same horizontal plane, and the cross plate includes a middle cross plate and a lower end plate formed by a number of cross plate units fixedly connected in the same horizontal plane; the upper end plate has the same thickness and structure as the vehicle body floor panel unit; the lower end plate has the same thickness and structure as the cross plate unit.

[0007] Furthermore, the two upper end plates are symmetrically arranged on both sides of the middle vehicle body bottom plate, and the side end surfaces of the two upper end plates are fixedly connected to the two sides of the middle vehicle body bottom plate in the same horizontal plane; the two outer vehicle body bottom plates are respectively arranged on the outer sides of the two upper end plates, and are fixedly connected to the side end surfaces of the two upper end plates in the same horizontal plane.

[0008] Furthermore, the two lower end plates are symmetrically arranged on both sides of the middle horizontal plate, and the side end surfaces of the two lower end plates are respectively fixedly connected to the two sides of the middle horizontal plate on the same horizontal plane.

[0009] Furthermore, the side end surfaces of the vehicle body bottom plate unit and / or the upper end plate are connected by stir friction welding; the side end surfaces of the cross plate unit and / or the lower end plate are connected by stir friction welding.

[0010] Furthermore, sealing plates are provided at both ends of the cavity.

[0011] Furthermore, the front floor panel is integrally arranged with the vehicle body floor panel, including a middle vehicle body floor panel and an upper end panel; two longitudinal beams extend from the vehicle body floor panel to the front end of the front floor panel, serving as supporting connecting plates.

[0012] Furthermore, the longitudinal beam at the lower end of the front floor is CNC cut.

[0013] Furthermore, the vehicle body floor, the front floor, the two longitudinal beams, the cross plate and the sealing plate are made of aluminum alloy material.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model discloses an aluminum alloy frame for a new energy light truck. After integration, it has no sub-frame structure. By optimizing and integrating the three parts of the bottom plate, the sub-frame and the frame, the overall height of the vehicle body is reduced, which can effectively reduce wind resistance and save energy. The bottom plate structure of the utility model replaces the frame crossbeam, so that the mechanical distribution of the frame is more uniform, which solves the stress concentration problem at the connection between the horizontal and longitudinal beams, reduces the risk of stress concentration, and improves the overall strength of the frame. The cavity structure in the middle of the frame is integrated and designed, and the battery pack is arranged here to improve the safety of the battery pack, and the battery pack bracket of the original structure is cancelled, which improves the utilization rate of the internal space of the frame and further realizes the lightweight demand of the light truck. The use of stir friction welding can meet the welding seam sealing requirements, and has higher strength, good sealing and smooth weld, and the safety of the frame is more reliable. In addition, the utility model is suitable for platform production needs, has high adaptability, and saves development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a new energy light truck frame according to an embodiment of the utility model;

[0017] Figure 2A top view of a new energy light truck frame according to an embodiment of the utility model;

[0018] Figure 3 It is a left view of a new energy light truck frame according to an embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the longitudinal beam profile formed by integrated extrusion according to an embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the vehicle body bottom plate and the cover plate profile of the embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of a new energy light truck frame connection according to an embodiment of the utility model;

[0022] in:

[0023] 1-body bottom plate 1; 2-longitudinal beam; 3-transverse plate; 4-cavity; 5-front bottom plate; 7-weld bead; 11-middle body bottom plate; 12-outer body bottom plate; 21-upper end plate; 22-lower end plate; 23-vertical longitudinal beam; 31-middle transverse plate. DETAILED DESCRIPTION

[0024] In order to better understand the purpose, structure and function of the utility model, Figure 1-6 , the utility model is described in further detail.

[0025] like Figure 1-6 As shown, a new energy light truck aluminum alloy frame includes a body floor 1, a front floor 5 arranged at the front end of the body floor 1, two longitudinal beams 2 symmetrically arranged at the lower part of the body floor 1, and a cross plate 3 connecting the bottom ends of the two longitudinal beams 2; the body floor 1, the two longitudinal beams 2 and the cross plate 3 enclose a cavity 4; the cavity 4 is used to place a battery pack, and the battery pack is placed in the cavity 4 and is independently sealed to ensure sealing.

[0026] The longitudinal beam 2 is an integrated extrusion-molded structure. The cross section of the longitudinal beam 2 is “T”-shaped and has a stable structure. The longitudinal beam 2 includes an upper end plate 21 , a vertical longitudinal beam 23 and a lower end plate 22 .

[0027] The vehicle body floor panel 1 includes a middle vehicle body floor panel 11 which is composed of a plurality of vehicle body floor panel units fixedly connected in the same horizontal plane, an upper end panel 21 and an outer vehicle body floor panel 12 which is composed of a plurality of vehicle body floor panel units fixedly connected in the same horizontal plane. The cross plate 3 includes a middle cross plate 31 which is composed of a plurality of cross plate units fixedly connected in the same horizontal plane and a lower end panel 22; the upper end panel 21 has the same thickness and structure as the vehicle body floor panel unit; the lower end panel 22 has the same thickness and structure as the cross plate unit.

[0028] The two upper end plates 21 are symmetrically arranged on both sides of the middle vehicle body bottom plate 11, and the side end surfaces of the two upper end plates 21 are fixedly connected to the two sides of the middle vehicle body bottom plate 11 on the same horizontal plane; the two outer vehicle body bottom plates 12 are respectively arranged on the outer sides of the two upper end plates 21, and are fixedly connected to the side end surfaces of the two upper end plates 21 on the same horizontal plane.

[0029] The two lower end plates 22 are symmetrically arranged on both sides of the middle transverse plate 31 , and the side end surfaces of the two lower end plates 22 are fixedly connected to the two sides of the middle transverse plate 31 on the same horizontal plane.

[0030] The side end 1 surface of the vehicle body bottom plate unit and / or the upper end plate 21 is connected by stir friction welding, and the side end surface of the transverse plate unit and / or the lower end plate 22 is connected by stir friction welding. Figure 6 The middle circle position is weld bead 7.

[0031] Sealing plates (not shown) are provided at both ends of the cavity 4.

[0032] The front floor panel 5 is integrated with the vehicle body floor panel 1, and includes a middle vehicle body floor panel 11 and an upper end panel 21; two longitudinal beams 2 extend from the vehicle body floor panel 1 to the front end of the front floor panel 5, serving as supporting connecting plates. The longitudinal beam 2 at the lower end of the front floor panel 5 is formed by CNC cutting, which does not affect the stability of the longitudinal beam 2 as a supporting structure.

[0033] The vehicle body bottom plate 1, the front bottom plate 5, the two longitudinal beams 2, the transverse plate 3 and the sealing plate are made of aluminum alloy material.

Claims

1. A new energy light truck aluminum alloy frame, characterized in that: It includes a body floor, a front floor arranged at the front end of the body floor, two longitudinal beams symmetrically arranged at the lower part of the body floor, and a cross plate connecting the bottom ends of the two longitudinal beams; the body floor, the two longitudinal beams and the cross plate enclose a cavity; the cavity is used to place the battery pack.

2. The aluminum alloy frame of a new energy light truck according to claim 1 is characterized in that: The longitudinal beam is an integrated extruded structure with a "T"-shaped cross section, including an upper end plate, a vertical longitudinal beam and a lower end plate.

3. The aluminum alloy frame of a new energy light truck according to claim 2 is characterized in that: The vehicle body floor panel includes a middle vehicle body floor panel formed by a number of vehicle body floor panel units fixedly connected in the same horizontal plane, an upper end panel, and an outer vehicle body floor panel formed by a number of vehicle body floor panel units fixedly connected in the same horizontal plane. The cross plate includes a middle cross plate and a lower end panel formed by a number of cross plate units fixedly connected in the same horizontal plane; the upper end panel has the same thickness and structure as the vehicle body floor panel unit; the lower end panel has the same thickness and structure as the cross plate unit.

4. The aluminum alloy frame of a new energy light truck according to claim 3 is characterized in that: The two upper end plates are symmetrically arranged on both sides of the middle body bottom plate, and the side end surfaces of the two upper end plates are fixedly connected to the two sides of the middle body bottom plate in the same horizontal plane; the two outer body bottom plates are respectively arranged on the outer sides of the two upper end plates, and are fixedly connected to the side end surfaces of the two upper end plates in the same horizontal plane.

5. The aluminum alloy frame of a new energy light truck according to claim 3 is characterized in that: The two lower end plates are symmetrically arranged on both sides of the middle horizontal plate, and the side end surfaces of the two lower end plates are respectively fixedly connected with the two sides of the middle horizontal plate on the same horizontal plane.

6. The aluminum alloy frame of a new energy light truck according to claim 4 is characterized in that: The side end surfaces of the vehicle body bottom plate unit and / or the upper end plate are connected by stir friction welding; the side end surfaces of the cross plate unit and / or the lower end plate are connected by stir friction welding.

7. The aluminum alloy frame of a new energy light truck according to claim 1 is characterized in that: Sealing plates are provided at both ends of the cavity.

8. The aluminum alloy frame of a new energy light truck according to claim 6 is characterized in that: The front floor panel is integrally arranged with the vehicle body floor panel, and comprises a middle vehicle body floor panel and an upper end panel; two longitudinal beams extend from the vehicle body floor panel to the front end of the front floor panel, serving as supporting connecting plates.

9. The aluminum alloy frame of a new energy light truck according to claim 8 is characterized in that: The longitudinal beam at the lower end of the front floor is CNC cut.

10. The aluminum alloy frame of a new energy light truck according to claim 1, characterized in that: The vehicle body bottom plate, the front bottom plate, the two longitudinal beams, the cross plate and the sealing plate are made of aluminum alloy material.

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