Flexible expandable chassis platform and vehicle

Abstract

The invention discloses a flexible expandable chassis platform which comprises a front chassis module, a rear chassis module and a middle module, and the middle module is located between the front chassis module and the rear chassis module and connected with the front chassis module and the rear chassis module. In the X direction, the connecting position of the front chassis module and / or the rear chassis module and the middle module can be adjusted within a preset first length bandwidth so as to adapt to various vehicle types with different axle distances. In the Y direction, the front chassis module and the rear chassis module are arranged to be capable of being adjusted within a preset first width bandwidth so as to adapt to various vehicle types with different wheel tracks. In the Z direction, the front chassis module and the rear chassis module are arranged to be capable of being adjusted within a preset first height bandwidth so as to adapt to various vehicle types with different ground clearances. According to the flexible expandable chassis platform, through front, middle and rear modular integrated arrangement of the chassis and free expansion, the flexible expandable chassis platform adapts to rapid updating iteration of different vehicle types, coverage of the platform to cross-level vehicle types is improved, the universalization rate of parts of all the vehicle types is effectively increased, the hardware quality of series products is improved, the development cost is reduced, and the development period is shortened. The invention further discloses a vehicle.

Description

Technical Field

[0001] The present invention belongs to the field of automobile technology, and in particular, relates to a flexible and expandable chassis platform and a vehicle. Background Art

[0002] Conventional chassis design of traditional automobiles has obvious disadvantages: large development, workload and cost. Existing new energy vehicles are represented by "skateboard chassis", which brings the advantages of diversified application and reusability of the chassis. Traditional automobile chassis do not need to consider the scalability of the vehicle, while the existing new energy vehicle chassis frame is generally fixed in size and only serves a certain type of vehicle. It is impossible to achieve free adjustment of the chassis size and its scalability: such as adjustable wheelbase, adjustable vehicle width, adjustable height, etc.

[0003] The current scalable chassis platform cannot adapt to vehicle models with changes in bandwidth, chassis size, and load-bearing capacity. The chassis platform needs higher integration to adapt to different vehicle models.

[0004] It is desirable to provide an improved flexible and scalable chassis platform, particularly with regard to improving chassis scalability to accommodate different vehicle models. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a flexible and expandable chassis platform, the purpose of which is to improve the chassis expandability to adapt to different vehicle models.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a flexible and expandable chassis platform, including a front chassis module, a rear chassis module and an intermediate module, wherein the intermediate module is located between the front chassis module and the rear chassis module and is connected to the front chassis module and the rear chassis module;

[0007] In the X direction, the front chassis module and / or the rear chassis module and the middle module are arranged at the connection to be adjustable within a preset first length bandwidth to accommodate a variety of vehicle models with different wheelbases;

[0008] In the Y direction, the front chassis module and the rear chassis module are configured to be adjustable within a preset first width bandwidth to accommodate a variety of vehicle models with different wheelbases;

[0009] In the Z direction, the front chassis module and the rear chassis module are configured to be adjustable within a preset first height bandwidth to accommodate a variety of vehicle models with different ground clearances.

[0010] The front chassis module comprises a front longitudinal beam and a front cross beam connected to the front longitudinal beam, the front cross beam is parallel to the Y direction, the front longitudinal beam is connected to the middle module, and the connection position of the front longitudinal beam and the middle module is adjustable.

[0011] The front longitudinal beam comprises a first front beam body, a second front beam body and a front curved section between the first front beam body and the second front beam body. By changing the structure of the front curved section, the distance between the first front beam body and the second front beam body in the Z direction can be adjusted.

[0012] The front crossbeam is arranged to be adjustable in length or to have a plurality of models with different lengths.

[0013] The rear chassis module comprises a rear longitudinal beam and a rear cross beam connected to the rear longitudinal beam, the rear cross beam is parallel to the Y direction, the rear longitudinal beam is connected to the middle module, and the connection position of the rear longitudinal beam and the middle module is adjustable.

[0014] The rear longitudinal beam comprises a first rear beam body, a second rear beam body and a rear bending section located between the first rear beam body and the second rear beam body. By changing the structure of the rear bending section, the distance between the first rear beam body and the second rear beam body in the Z direction is set to be adjustable.

[0015] The rear cross beam is arranged to be adjustable in length or to have a plurality of models with different lengths.

[0016] The middle module comprises two middle longitudinal beams and a middle cross beam connected to the two middle longitudinal beams. The middle cross beam is parallel to the Y direction, and the distance between the two middle longitudinal beams is adjustable.

[0017] A plurality of middle cross beams are provided, and the distance between two adjacent middle cross beams is adjustable.

[0018] The present invention also provides a vehicle, comprising the flexible and expandable chassis platform.

[0019] The flexible and expandable chassis platform of the present invention is modularly integrated in the front, middle and rear parts of the chassis, and can be freely expanded to adapt to the rapid update and iteration of different vehicle models, thereby improving the platform's coverage of cross-level vehicle models, effectively increasing the commonality of parts for each vehicle model, improving the hardware quality of a series of products, reducing development costs, and shortening the development cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The schematic diagram of the structure of the automobile chassis that can be expanded in the X, Y, and Z directions is exemplarily shown for the embodiment of the present invention;

[0021] Figure 2 It is a simple schematic diagram of the structure of the front chassis module, the middle vehicle body, and the rear chassis module demonstrated in the embodiment of the present invention;

[0022] Figure 3 It is a simple schematic diagram of a chassis equipped with active suspension, front and rear vector dual motors and other structures demonstrated in an embodiment of the present invention;

[0023] Figure 4It is a schematic diagram of the projection of the chassis structure demonstrated in the embodiment of the present invention on the XY plane;

[0024] Figure 5 It is a structural schematic diagram of the anti-collision beam structure;

[0025] Figure 6 It is a schematic diagram of the local structure of the anti-collision beam structure;

[0026] Figure 7 This is the main view of the anti-collision beam;

[0027] The marks in the above figures are: 1. shock absorber tower; 2. front chassis module; 3. rear chassis module; 4. middle module; 5. front longitudinal beam; 6. front curved section; 7. front cross beam; 8. active suspension; 9. vector motor; 10. adjustment bandwidth; 11. battery pack and lower body assembly; 12. rear longitudinal beam; 13. rear curved section; 14. rear cross beam; 15. middle longitudinal beam; 16. middle cross beam; 17. one side reinforcement tube; 18. the other side reinforcement tube; 19. first side wall; 20. second side wall; 21. anti-collision beam body; 22. energy absorption box; 23. first weld; 24. second weld; 25. first anti-collision beam cross rib; 26. rear connecting plate; 27. mounting bolts; 28. second anti-collision beam cross rib. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower" and similar expressions used in this article are for illustrative purposes only.

[0030] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] Embodiment 1

[0033] First, as Figures 1 to 4 As shown, an embodiment of the present invention provides a flexible expandable chassis platform, including a front chassis module 2, a rear chassis module 3 and a middle module 4, wherein the middle module 4 is located between the front chassis module 2 and the rear chassis module 3 and is connected to the front chassis module 2 and the rear chassis module 3;

[0034] In the X direction, the front chassis module 2 and / or the rear chassis module 3 and the middle module 4 are arranged at the connection to be adjustable within a preset first length bandwidth to accommodate various vehicle models with different wheelbases;

[0035] In the Y direction, the front chassis module 2 and the rear chassis module 3 are configured to be adjustable within a preset first width bandwidth to accommodate a variety of vehicle models with different wheelbases;

[0036] In the Z direction, the front chassis module 2 and the rear chassis module 3 are configured to be adjustable within a preset first height bandwidth to accommodate a variety of vehicle models with different ground clearances.

[0037] Specifically, in the embodiment of the present invention, the chassis platform is divided into three modules: front, middle and rear. The expansion of the wheelbase in the X direction is achieved by pulling out the front and rear modules; the front chassis module 2 and the rear chassis module 3 are symmetrical structures of left and right parts, and the expansion of the wheelbase in the Y direction is achieved by adjusting the length of the standard cross-section beam; the front chassis module 2 and the rear chassis module 3 are equipped with active suspension 8, and the expansion design of the curved section structure can achieve expansion in the Z direction. The flexible and expandable chassis platform of the embodiment of the present invention can achieve three-way adjustment in X, Y and Z directions, and can be compatible with intelligent chassis technologies such as active suspension 8.

[0038] like Figures 1 to 4 As shown, the front chassis module 2 is equipped with a front wheel and a vector motor 9. The front chassis module 2 includes a front longitudinal beam 5 and a front cross beam 7 connected to the front longitudinal beam 5. The length direction of the front longitudinal beam 5 is parallel to the X direction, and the length direction of the front cross beam 7 is parallel to the Y direction. Two front longitudinal beams 5 are provided, and the two ends of the front cross beam 7 are respectively fixedly connected to the two front longitudinal beams 5. In the X direction, the two front longitudinal beams 5 are connected to the middle module 4. There are multiple connection positions between the front longitudinal beam 5 and the middle module 4. The connection position between the front longitudinal beam 5 and the middle module 4 can be adjusted to adjust the distance between the front chassis module 2 and the rear chassis module 3, so as to adapt to various vehicle models with different wheelbases.

[0039] like Figures 1 to 4 As shown, the front longitudinal beam 5 includes a first front beam body, a second front beam body, and a front curved section 6 located between the first front beam body and the second front beam body. The front end of the second front beam body is connected to the rear end of the front curved section 6, the rear end of the second front beam body is connected to the middle module 4, and the rear end of the first front beam body is connected to the front end of the front curved section 6.

[0040] In an embodiment of the present invention, the structure of the front curved section 6 is changed by changing the distance between the front end and the rear end of the front curved section 6 in the Z direction, for example, by increasing or decreasing the arc length of the front curved section 6, so that the distance between the first front beam body and the second front beam body in the Z direction can be adjusted, thereby achieving that the front chassis module 2 in the Z direction can be adjusted within a preset first height bandwidth to adapt to a variety of vehicle models with different ground clearances to adapt to changes in the Z direction of the vehicle.

[0041] In the embodiment of the present invention, the front cross beam 7 is configured to be adjustable in length or have multiple models with different lengths. By adjusting the length of the front cross beam 7, or selecting a front cross beam 7 of different lengths to connect with the two front longitudinal beams 5, the distance between the two front longitudinal beams 5 in the Y direction can be adjusted, so that the front chassis module 2 can adapt to various vehicle models with different wheelbases and achieve expansion in the Y direction.

[0042] like Figures 1 to 4 As shown, the rear wheels and the vector motor 9 are installed on the rear chassis module 3. The rear chassis module 3 includes a rear longitudinal beam 12 and a rear cross beam 14 connected to the rear longitudinal beam 12. The length direction of the rear longitudinal beam 12 is parallel to the X direction, and the length direction of the rear cross beam 14 is parallel to the Y direction. Two rear longitudinal beams 12 are provided, and the two ends of the rear cross beam 14 are respectively fixedly connected to the two rear longitudinal beams 12. In the X direction, the two rear longitudinal beams 12 are connected to the middle module 4. There are multiple connection positions between the rear longitudinal beam 12 and the middle module 4. The connection position between the rear longitudinal beam 12 and the middle module 4 can be adjusted to achieve the adjustment of the distance between the front chassis module 2 and the rear chassis module 3, so as to adapt to a variety of vehicle models with different wheelbases.

[0043] like Figures 1 to 4 As shown, the rear longitudinal beam 12 includes a first rear beam body, a second rear beam body, and a rear curved section 13 located between the first rear beam body and the second rear beam body. The front end of the second rear beam body is connected to the rear end of the rear curved section 13, the rear end of the second rear beam body is connected to the middle module 4, and the rear end of the first rear beam body is connected to the front end of the rear curved section 13.

[0044] In the embodiment of the present invention, by changing the distance between the front end and the rear end of the rear curved section 13 in the Z direction, for example, increasing or decreasing the arc length of the rear curved section 13, the structure of the rear curved section 13 is changed, so that the distance between the first rear beam and the second rear beam in the Z direction can be adjusted, and then the rear chassis module 3 can be adjusted within a preset first height bandwidth in the Z direction to adapt to a variety of vehicle models with different ground clearances to adapt to changes in the Z direction of the vehicle. Accordingly, the ground clearance of the middle module 4 can be adjusted in the Z direction, and then the ground clearance of the battery pack can be adjusted.

[0045] In the embodiment of the present invention, the rear cross beam 14 is configured to be adjustable in length or to have multiple models with different lengths. By adjusting the length of the rear cross beam 14 or selecting rear cross beams 14 of different lengths to connect with the two rear longitudinal beams 12, the distance between the two rear longitudinal beams 12 in the Y direction can be adjusted, so that the rear chassis module 3 can adapt to various vehicle models with different wheelbases and achieve expansion in the Y direction.

[0046] like Figures 1 to 4 As shown, the middle module 4 is used as a receiving part of the passenger compartment and is also used to install the battery pack. The middle module 4 includes two middle longitudinal beams 15 and a middle cross beam 16 connected to the two middle longitudinal beams 15. The length direction of the middle longitudinal beam 15 is parallel to the X direction, and the length direction of the middle cross beam 16 is parallel to the Y direction. Two middle longitudinal beams 15 are provided, and the two ends of the middle cross beam 16 are fixedly connected to the two middle longitudinal beams 15 respectively. The distance between the two middle longitudinal beams 15 is set to be adjustable. Multiple middle cross beams 16 are provided, and all middle cross beams 16 are arranged in sequence along the length direction of the middle longitudinal beam 15, and the distance between two adjacent middle cross beams 16 is set to be adjustable.

[0047] In the embodiment of the present invention, the middle cross beam 16 is set to be adjustable in length or have multiple models with different lengths. By adjusting the length of the middle cross beam 16, or selecting middle cross beams 16 of different lengths to connect with two middle longitudinal beams 15, the distance between the two middle longitudinal beams 15 in the Y direction can be adjusted to achieve expansion in the Y direction. By adjusting the distance between two adjacent middle cross beams 16, adjusting the length of the middle longitudinal beam 15, or selecting middle longitudinal beams 15 of different lengths to connect with the middle cross beam 16, expansion in the X direction can be achieved to meet the installation of battery packs of different sizes and achieve adjustment of power and cruising range.

[0048] like Figures 1 to 4 As shown, a shock absorber tower 1 is arranged on the front longitudinal beam 5 of the front chassis module 2 , and a shock absorber tower 1 is arranged on the rear longitudinal beam 12 of the rear chassis module 3 . The shock absorber tower 1 is used to connect the suspension system.

[0049] In summary, the flexible and expandable chassis platform of the above structure has the following structural design:

[0050] 1. It can meet the X-direction adjustment: the battery pack is integrated with the middle lower body, the front chassis module 2 is integrated with the front compartment of the lower body, and the rear chassis module 3 is integrated with the rear compartment of the lower body. These three sections constitute a complete chassis module.

[0051] The advantage of this structure is that it enables modular assembly and use, making it easier to change the length of the middle section of the battery pack to install more battery cells, thereby improving the versatility of the components of the vehicle chassis and improving the manufacturing and assembly efficiency of the vehicle chassis.

[0052] The front chassis module 2 and the rear chassis module 3 are connected to the middle section module by riveting, which can provide a higher connection strength.

[0053] In the X direction, the front chassis module 2 and the rear chassis module 3 can be adjusted within a preset first length bandwidth at the connection with the middle section module to adapt to various vehicle models with different wheelbases.

[0054] 2. It can meet the Y-axis adjustment: the front chassis module 2 and the rear chassis module 3 are formed by high-pressure casting, and the left and right parts are symmetrically arranged relative to the middle module. The middle cross beam 16, the front cross beam 7 and the rear cross beam 14 are new parts, which can increase the versatility of the parts.

[0055] The middle cross beam 16, the front cross beam 7 and the rear cross beam 14 are roll-formed profiles, and all have standard cross sections. The middle cross beam 16, the front cross beam 7 and the rear cross beam 14 can be adjusted in the Y direction and can be independently disassembled and assembled relative to the automobile chassis. By replacing one or more of them, a modular structure corresponding to different vehicle models can be obtained, which can adapt to various vehicle models with different wheelbases.

[0056] The Y-direction lengths of the middle cross beam 16, the front cross beam 7 and the rear cross beam 14 can be changed by machining. On the basis of leaving a certain machining allowance, the inside or edges of the middle cross beam 16, the front cross beam 7 and the rear cross beam 14 can be cut, or connecting parts such as flexible gaskets can be added or reduced in the middle cross beam 16, the front cross beam 7 and the rear cross beam 14. This can avoid the need to re-open the mold, reduce costs, adapt to various vehicle models with different wheelbases, and achieve expansion in the Y direction.

[0057] 3. Can meet Z-axis adjustment: The middle module 4, as the receiving part of the passenger compartment, can change the posture of the people in the compartment, and also determines the ground clearance of the battery pack.

[0058] The connection between the front chassis module 2 and the rear chassis module 3 and the middle section of the vehicle body is a detachable curved section. When the vertical dimensions of the vehicle change due to the need to change the tire size or suspension, the structure of the front curved section 6 and the rear curved section 13 can be adjusted to adapt to the change in the Z direction of the vehicle.

[0059] In addition, the shock absorber tower 1 can also be adjusted to adapt to this change. These two designs make the platform compatible with the active suspension 8 and the spatial arrangement of the passive suspension, and compatible with suspension system solutions with a stroke of 170mm, 200mm, and 230mm, thereby obtaining different passenger compartment floor heights and realizing the expansion of models of different heights.

[0060] The change in the bending section structure mentioned here refers to changing the thickness or height of the bending section blank through machining, rather than re-opening the mold design. This can be done in an economical way to carry out small and medium-sized batch production and improve the commonality of platform parts.

[0061] 4. Ability to meet power adjustment: By adjusting the length of the standard cross beam 16 and the middle longitudinal beam 15, the middle module 4 can meet the arrangement of a battery pack with a power of 80-120kWh, thereby achieving power adjustment.

[0062] In a second aspect, an embodiment of the present invention further provides a vehicle, including a flexible and expandable chassis platform of the above structure. The specific structure of the flexible and expandable chassis platform can be referred to Figures 1 to 4 Since the vehicle of the present invention includes the flexible expandable chassis platform in the above embodiment, it has all the advantages of the above flexible expandable chassis platform.

[0063] Embodiment 2

[0064] In the flexible and expandable chassis platform provided by the embodiment of the present invention,

[0065] The front chassis module 2 is fixedly connected to the anti-collision beam, such as Figure 5 and Figure 6 As shown, it includes an anti-collision beam body 21 and an energy absorption box 22. The anti-collision beam body 21 includes an outer beam body with a hollow interior and a first anti-collision beam transverse rib 25 and a second anti-collision beam transverse rib 28 arranged in the inner cavity of the outer beam body. At least two first anti-collision beam transverse ribs 25 are arranged, and the second anti-collision beam transverse rib 28 is located between the two first anti-collision beam transverse ribs 25 and the thickness of the second anti-collision beam transverse rib 28 is greater than the thickness of the first anti-collision beam transverse rib 25. The first anti-collision beam transverse rib 25 and the second anti-collision beam transverse rib 28 extend along the entire length direction of the outer beam body, and the length direction of the first anti-collision beam transverse rib 25 and the second anti-collision beam transverse rib 28 are parallel to the length direction of the outer beam body.

[0066] In the embodiment of the present invention, the anti-collision beam body 21 is made of aluminum alloy, which can reduce the weight of the whole vehicle. Figure 5 As shown, two energy absorbing boxes 22 are provided, and the two energy absorbing boxes 22 are connected to the outer beam body by welding.

[0067] like Figure 5 and Figure 6As shown, in the embodiment of the present invention, two first anti-collision beam transverse ribs 25 are provided, and the second anti-collision beam transverse ribs 28 are located in the middle position of the width direction of the outer beam body. The second anti-collision beam transverse ribs 28 are also located in the middle position of the two first anti-collision beam transverse ribs 25, and one second anti-collision beam transverse rib 28 is provided. That is, inside the outer beam body, there are 3 transverse ribs, namely, upper, middle and lower, wherein the upper and lower transverse ribs are the first anti-collision beam transverse ribs 25, and the middle transverse rib is the second anti-collision beam transverse rib 28. The purpose of the transverse ribs designed inside is to ensure that the anti-collision beam body 21 has sufficient rigidity, and when the car collides, the energy of the car collision can be effectively transmitted laterally, thereby ensuring that the passenger compartment is not damaged. The transverse ribs with a thickness of 5mm in the middle are designed to ensure the rigidity of the anti-collision beam and the stability of the lateral energy transmission. The transverse ribs with a thickness of 4mm in the upper and lower parts are designed to deform the anti-collision beam during the collision process to absorb part of the energy, so that the energy transmitted to the rear structure of the anti-collision beam is reduced, thereby ensuring the safety of the passenger compartment.

[0068] In the embodiment of the present invention, the thickness of the second anti-collision beam transverse rib 28 is 5 mm, and the thickness of the first anti-collision beam transverse rib 25 is 4 mm.

[0069] like Figure 5 and Figure 6 As shown, the outer beam body is a structure with a rectangular cross-section, and the outer beam body includes two first side walls 19 and two second side walls 20, the energy absorption box 22 is fixedly connected to one of the second side walls 20, the two first side walls 19 are parallel to the first anti-collision beam transverse rib 25 and the second anti-collision beam transverse rib 28, the two second side walls 20 are parallel, the two ends of the two first side walls 19 are respectively vertically fixedly connected to the two second side walls 20, the first anti-collision beam transverse rib 25 and the second anti-collision beam transverse rib 28 are located between the two first side walls 19, the first anti-collision beam transverse rib 25 and the second anti-collision beam transverse rib 28 are also located between the two second side walls 20, and the two ends of the first anti-collision beam transverse rib 25 and the second anti-collision beam transverse rib 28 in the width direction are respectively vertically fixedly connected to the two second side walls 20. The lengths of the first anti-collision beam transverse ribs 25 and the second anti-collision beam transverse ribs 28 are the same as the lengths of the first side wall 19 and the second side wall 20, and the two ends of the first anti-collision beam transverse ribs 25 and the second anti-collision beam transverse ribs 28 in the length direction are respectively aligned with the two ends of the first side wall 19 and the second side wall 20 in the length direction. The distance between each first anti-collision beam transverse rib 25 and the adjacent first side wall 19 is smaller than the distance between the first anti-collision beam transverse ribs 25 and the adjacent second anti-collision beam transverse ribs 28, and the distance between each first anti-collision beam transverse ribs 25 and the adjacent first side wall 19 is the same, and the two second anti-collision beam transverse ribs 28 are located in the middle of the two first side walls 19. The anti-collision beam transverse ribs are arranged in this way, so that the anti-collision beam is more likely to deform during a collision, thereby absorbing part of the energy and improving the safety of the entire vehicle.

[0070] like Figure 5 and Figure 6 As shown, the connection between the energy absorption box 22 and the outer beam body forms a first weld 23 and a second weld 24, the first weld 23 is located at the bottom of the energy absorption box 22, and the second weld 24 is located at both sides of the energy absorption box 22 in the width direction, the width direction of the energy absorption box 22 is parallel to the length direction of the outer beam body, the length direction of the first weld 23 is parallel to the length direction of the outer beam body, the first weld 23 is perpendicular to the second weld 24, the first weld 23 extends along the entire width direction of the energy absorption box 22, and the second weld 24 extends along the entire width direction of the outer beam body. Increasing the connection between the lower end surface of the anti-collision beam and the energy absorption box 22 can absorb more energy during the collision of the whole vehicle, effectively improving the safety performance of the whole vehicle.

[0071] like Figure 5 and Figure 6 As shown, the rear connecting plate is connected to the energy absorption boxes 22 on the left and right sides through welds, and is connected to the frame through mounting bolts 27; the rear connecting plate and the mounting bolts 27 are symmetrical about the Y-axis of the vehicle, and an anti-collision beam assembly has a total of 2 rear connecting plates and 8 mounting bolts 27.

[0072] The rear connecting plate is used to connect with the front longitudinal beam. The installation position of the energy absorption box 22 on the outer beam body is adjustable to achieve the adjustment of the distance between the two energy absorption boxes 22 to adapt to the position of the front longitudinal beam to meet the requirements of Y-axis adjustment.

[0073] In the embodiment of the present invention, Figure 7 As shown, the anti-collision beam body 21 also includes a reinforcing structure arranged in the inner cavity of the outer beam body. The reinforcing structure is arranged corresponding to the front end of the energy absorption box. The reinforcing structure is a hollow reinforcing tube. The reinforcing tube is embedded in the inner cavity of the outer beam body and has a compact structure. The reinforcing tube is a hollow structure with light weight, which is conducive to lightweight design.

[0074] like Figure 7 As shown, reinforcing tubes are provided in both sides of the outer beam body, and the two reinforcing tubes are respectively a one-side reinforcing tube 17 and the other-side reinforcing tube 18. The positions of the two reinforcing tubes correspond to the positions of the two energy absorption boxes respectively. Each reinforcing tube and an energy absorption box are respectively located on the same straight line parallel to the length direction of the vehicle body. The two reinforcing plates are symmetrically arranged, and the structure is stable and reliable.

[0075] The reinforcement tubes in the two sides are arranged symmetrically, with a simple structure and relatively low cost; the reinforcement tubes are fixed in the outer beam body by a set of fastening rivet screws, which is easy to assemble. Reinforcement tubes are added inside and outside the cavity of the outer beam body to the inside of the energy absorption box (transition area of ​​the body profile).

[0076] Furthermore, the reinforcing tube is arranged in the uppermost cavity, that is, the reinforcing tube is arranged between the first anti-collision beam cross rib located at the top and the first side wall located at the top of the outer beam body, and the reinforcing tube is located between the two second side walls at the same time; preferably, each reinforcing tube is connected to the first side wall at the top of the outer beam body by two fastening rivet screws; the length of the reinforcing tube is greater than the width of the energy absorption box, the length direction of the reinforcing tube is parallel to the length direction of the outer beam body, and the two fastening rivet screws are located on both sides of the energy absorption box, and the structural strength is high.

[0077] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. Flexible and expandable chassis platform, characterized by: It includes a front chassis module, a rear chassis module and an intermediate module, wherein the intermediate module is located between the front chassis module and the rear chassis module and is connected to the front chassis module and the rear chassis module; In the X direction, the front chassis module and / or the rear chassis module and the middle module are arranged at the connection to be adjustable within a preset first length bandwidth to accommodate a variety of vehicle models with different wheelbases; In the Y direction, the front chassis module and the rear chassis module are configured to be adjustable within a preset first width bandwidth to accommodate a variety of vehicle models with different wheelbases; In the Z direction, the front chassis module and the rear chassis module are configured to be adjustable within a preset first height bandwidth to accommodate a variety of vehicle models with different ground clearances.

2. The flexible expandable chassis platform according to claim 1, characterized in that: The front chassis module comprises a front longitudinal beam and a front cross beam connected to the front longitudinal beam, the front cross beam is parallel to the Y direction, the front longitudinal beam is connected to the middle module, and the connection position of the front longitudinal beam and the middle module is adjustable.

3. The flexible expandable chassis platform according to claim 2, characterized in that: The front longitudinal beam comprises a first front beam body, a second front beam body and a front curved section between the first front beam body and the second front beam body. By changing the structure of the front curved section, the distance between the first front beam body and the second front beam body in the Z direction can be adjusted.

4. The flexible expandable chassis platform according to claim 2, characterized in that: The front crossbeam is arranged to be adjustable in length or to have a plurality of models with different lengths.

5. The flexible expandable chassis platform according to any one of claims 1 to 4, characterized in that: The rear chassis module comprises a rear longitudinal beam and a rear cross beam connected to the rear longitudinal beam, the rear cross beam is parallel to the Y direction, the rear longitudinal beam is connected to the middle module, and the connection position of the rear longitudinal beam and the middle module is adjustable.

6. The flexible expandable chassis platform according to claim 5, characterized in that: The rear longitudinal beam comprises a first rear beam body, a second rear beam body and a rear bending section located between the first rear beam body and the second rear beam body. By changing the structure of the rear bending section, the distance between the first rear beam body and the second rear beam body in the Z direction is set to be adjustable.

7. The flexible expandable chassis platform according to claim 6, characterized in that: The rear cross beam is arranged to be adjustable in length or to have a plurality of models with different lengths.

8. The flexible expandable chassis platform according to any one of claims 1 to 7, characterized in that: The middle module comprises two middle longitudinal beams and a middle cross beam connected to the two middle longitudinal beams. The middle cross beam is parallel to the Y direction, and the distance between the two middle longitudinal beams is adjustable.

9. The flexible expandable chassis platform according to claim 8, characterized in that: A plurality of middle cross beams are provided, and the distance between two adjacent middle cross beams is adjustable.

10. A vehicle, characterized in that: It comprises the flexible expandable chassis platform as described in any one of claims 1 to 10.

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