Universal chassis platform, drive-by-wire chassis system and mechanical chassis system

Abstract

The invention discloses a universal chassis platform, a drive-by-wire chassis system and a mechanical chassis system, and belongs to the technical field of vehicle chassis. The chassis platform comprises a front suspension and a rear suspension; a first mounting point and a second mounting point are arranged on a front auxiliary frame of the front suspension; a third mounting point and a fourth mounting point are arranged on a rear auxiliary frame of the rear suspension; the first mounting point and the second mounting point are used for being detachably connected with a steer-by-wire machine and an electric power steering machine; the third mounting point and the fourth mounting point are used for being detachably connected with a rear wheel steering engine. The chassis platform not only can carry a traditional mechanical chassis related structure, but also can carry a drive-by-wire chassis related structure.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, specifically to a universal chassis platform, a drive-by-wire chassis system, and a mechanical chassis system. Background Technology

[0002] The development of the chassis system has a decisive impact on the development cycle, handling, and stability of the entire vehicle, and is a key component in the success of vehicle product development.

[0003] The chassis used in the relevant technologies are all mechanical chassis, which do not have space reserved for the arrangement of drive-by-wire chassis-related structures. When it is necessary to arrange drive-by-wire steering, electronic braking and other drive-by-wire chassis-related structures on the vehicle, the chassis platform needs to be redeveloped, which increases the development cycle and development cost.

[0004] Therefore, the chassis structure in the relevant technology cannot accommodate both traditional mechanical chassis structures and drive-by-wire chassis structures. Summary of the Invention

[0005] In view of this, this application provides a universal chassis platform, a drive-by-wire chassis system, and a mechanical chassis system. This chassis platform can be equipped with both traditional mechanical chassis structures and drive-by-wire chassis structures.

[0006] Specifically, this application includes the following technical solutions: The first aspect of this application provides a universal chassis platform, including: a front suspension and a rear suspension; A first mounting point and a second mounting point are provided on the front subframe of the front suspension; a third mounting point and a fourth mounting point are provided on the rear subframe of the rear suspension. The first and second mounting points are used for detachable connection with the steer-by-wire system and the electric power steering system; The third and fourth mounting points are used for detachable connection with the rear wheel steering gear.

[0007] Optionally, it also includes a reinforcing plate, which is detachably connected to the third mounting point and the fourth mounting point.

[0008] Optionally, the first and second mounting points, as well as the third and fourth mounting points, are symmetrically arranged about the ZX plane of the vehicle; where Z is the vertical direction of the vehicle and X is the longitudinal direction of the vehicle.

[0009] Optionally, the front subframe is connected to the front steering knuckle, and the rear subframe is connected to the rear steering knuckle; the front steering knuckle is used for detachable connection with the front brake caliper, and the rear steering knuckle is used for detachable connection with the rear brake caliper.

[0010] Optionally, the rear steering knuckle is also used to connect to the steering tie rod.

[0011] Optionally, the front suspension adopts a double wishbone structure, and the rear suspension adopts a five-link structure.

[0012] Optionally, threaded holes are provided at the first mounting point, the second mounting point, the third mounting point and the fourth mounting point.

[0013] A second aspect of this application provides a steer-by-wire chassis system, including the aforementioned general chassis platform, steer-by-wire mechanism, and rear-wheel steering mechanism; The steer-by-wire system is connected to the first mounting point and the second mounting point; The rear wheel steering gear is connected to the third and fourth mounting points.

[0014] A third aspect of this application provides a mechanical chassis system, including the aforementioned general chassis platform and electric power steering. The electric power steering gear is connected to the first mounting point and the second mounting point.

[0015] Optionally, the reinforcing plate is connected to the third and fourth mounting points.

[0016] The beneficial effects of the technical solutions provided in this application include at least the following: This application provides a universal chassis platform, a steerable-by-wire chassis system, and a mechanical chassis system. The chassis platform includes a front suspension and a rear suspension. A first mounting point and a second mounting point are provided on the front subframe of the front suspension. These mounting points can be detachably connected to the steerable-by-wire gear in the steerable-by-wire chassis or to the electric power steering gear in the mechanical chassis. The design space of the front subframe accommodates the arrangement of the steerable-by-wire gear and the electric power steering gear, enabling mutual switching between the two. A third mounting point and a fourth mounting point are provided on the rear subframe of the rear suspension. These mounting points can be connected to the rear wheel steering gear in the steerable-by-wire chassis, accommodating the arrangement and installation of the rear wheel steering gear. When there is no rear wheel steering, the rear wheel steering gear can be removed. The chassis platform provided in this application can accommodate the installation of both steerable-by-wire chassis and mechanical chassis structures, shortening the development cycle and reducing the development cost of the chassis system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This illustration shows a schematic diagram of the front suspension structure of a universal chassis platform equipped with a steer-by-wire system and a steer-by-wire active suspension, as provided in an embodiment of this application. Figure 2 This illustration shows a schematic diagram of the rear suspension structure of a universal chassis platform equipped with a rear-wheel steering gear and a steerable active suspension according to an embodiment of this application; Figure 3 This illustration shows a schematic diagram of the front suspension structure of a universal chassis platform equipped with an electric power steering system and an active suspension, as provided in an embodiment of this application. Figure 4 This paper shows a schematic diagram of the rear suspension structure of a universal chassis platform equipped with a mechanical active suspension according to an embodiment of this application; Figure 5 This paper shows a schematic diagram of the front suspension structure of a universal chassis platform equipped with a steer-by-wire system, as provided in an embodiment of this application. Figure 6 This paper shows a schematic diagram of the front suspension structure of a universal chassis platform equipped with an electric power steering system according to an embodiment of this application. Figure 7 This invention provides a schematic diagram of the rear suspension structure of a universal chassis platform equipped with a rear-wheel steering system, as shown in an embodiment of this application. Figure 8 This paper shows a schematic diagram of the rear suspension structure of a universal chassis platform equipped with a reinforcing plate, as provided in an embodiment of this application. Figure 9 This paper shows a schematic diagram of the front suspension structure in the general chassis platform provided in an embodiment of this application; Figure 10 This paper shows a schematic diagram of the rear suspension structure in a general chassis platform provided in an embodiment of this application; Figure 11 A schematic diagram of the drive-by-wire active suspension structure provided in an embodiment of this application is shown; Figure 12 A schematic diagram of a mechanical active suspension structure provided in an embodiment of this application is shown; Figure 13 A schematic diagram of the electronic braking system structure provided in an embodiment of this application is shown; Figure 14 A schematic diagram of a conventional hydraulic braking system provided in an embodiment of this application is shown.

[0019] The attached figures are labeled as follows: 101. Steer-by-wire gear; 102. Rear-wheel steering gear; 103. Active suspension; 104. Electronic braking system; 201. CDC shock absorber; 202. Air spring; 203. Electric power steering gear; 204. Hydraulic braking system; 301. First mounting point; 302. Second mounting point; 401. Third mounting point; 402. Fourth mounting point; 504. Rear-wheel steering gear tie rod; 603. Reinforcement plate; 604. Toe-in tie rod; 701. Front subframe; 702. Front upper control arm (front); 703. Front upper control arm (rear); 704. Front lower control arm (front); 705. Front lower control arm (rear); 706. Rear subframe. Chassis, 707, Rear Upper Control Arm - Front, 708, Rear Upper Control Arm - Rear, 709, Rear Lower Control Arm, 710, Rear Toe Adjustment Rod, 711, Rear Trailing Arm, 801, Front Air Spring, 802, Front Active Shock Absorber, 803, Rear Active Shock Absorber, 804, Rear Air Spring, 901, Front Air Spring, 902, Front CDC Shock Absorber, 903, Rear CDC Shock Absorber, 904, Rear Air Spring, 1001, Front Electronic Brake Caliper, 1002, Front Steering Knuckle, 1003, Rear Electronic Brake Caliper, 1004, Rear Steering Knuckle, 1101, Front Hydraulic Brake Caliper, 1103, Rear Hydraulic Brake Caliper.

[0020] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0021] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. To make the technical solutions and advantages of this application clearer, they will be described in detail below with reference to the accompanying drawings.

[0022] The chassis used in the relevant technologies are all mechanical chassis, which do not have space reserved for the arrangement of drive-by-wire chassis-related structures. When it is necessary to arrange drive-by-wire steering, electronic braking and other drive-by-wire chassis-related structures on the vehicle, the chassis platform needs to be redeveloped, which increases the development cycle and development cost.

[0023] Therefore, the chassis structure in the relevant technology cannot accommodate both traditional mechanical chassis structures and drive-by-wire chassis structures.

[0024] In contrast, this application provides a universal chassis platform designed based on a front double wishbone and rear five-link suspension structure. It can be expanded in terms of steering, braking, and suspension systems. Specifically, it can accommodate traditional mechanical chassis structures, such as the suspension (CDC shock absorber 201 and air spring 202), electric power steering 203 for steering, and hydraulic braking system 204 for braking. It can also accommodate steerable chassis structures, such as steerable steering gear 101, rear-wheel steering gear 102, active suspension 103, and electronic braking system 104. This provides space for steerable technologies such as steerable steering gear 101, rear-wheel steering gear 102, active suspension 103, and electronic braking system 104, better aligning with platform characteristics and overcoming the time and economic costs of developing entirely new steerable technologies, as well as the need for numerous newly developed parts. The specific configuration of the chassis platform when steerable technology is incorporated is as follows: Figure 1 and Figure 2 As shown.

[0025] This application provides a general-purpose chassis platform, such as Figures 1-14 As shown, it includes: front suspension and rear suspension; A first mounting point 301 and a second mounting point 302 are provided on the front subframe 701 of the front suspension; a third mounting point 401 and a fourth mounting point 402 are provided on the rear subframe 706 of the rear suspension. The first mounting point 301 and the second mounting point 302 are used for detachable connection with the steer-by-wire 101 and the electric power steering 203. The third mounting point 401 and the fourth mounting point 402 are used for detachable connection with the rear wheel steering gear 102.

[0026] The universal chassis platform proposed in this application also includes a reinforcing plate 603, which is detachably connected to the third mounting point 401 and the fourth mounting point 402.

[0027] Without the rear wheel steering gear 102, the reinforcing plate 603 is connected to the third mounting point 401 and the fourth mounting point 402 to strengthen the platform.

[0028] This application proposes a universal chassis platform that standardizes the installation positions of the steer-by-wire system in a steer-by-wire chassis system and the electric power steering system in a mechanical chassis system. A first mounting point 301 and a second mounting point 302 are provided on the front subframe 701, and the design space of the front subframe 701 accommodates the arrangement of the steer-by-wire system 101 and the electric power steering system 203, allowing for interchangeability. A third mounting point 401 and a fourth mounting point 402 are reserved at the front of the rear subframe 706, and the design space of the rear subframe 706 accommodates the arrangement and installation of the rear wheel steering system 102. When there is no rear wheel steering, a reinforced version 603 can be installed to increase strength.

[0029] Among them, the first mounting point 301 and the second mounting point 302, as well as the third mounting point 401 and the fourth mounting point 402 are all symmetrically arranged about the ZX plane of the whole vehicle; the Z direction is the vertical direction of the vehicle, and the X direction is the longitudinal direction of the vehicle.

[0030] Threaded holes are provided at the first mounting point 301, the second mounting point 302, the third mounting point 401, and the fourth mounting point 402; the steer-by-wire gear 101, the electric power steering gear 203, the rear wheel steering gear 102, and the reinforcing plate 603 are detachably connected to the corresponding mounting points by means of threaded connection with the corresponding threaded holes.

[0031] In some embodiments, the first mounting point 301 and the second mounting point 302 are located in front of the front wheel center on the front side of the front subframe; the third mounting point 401 and the fourth mounting point 402 are located in front of the rear wheel center at the front end of the rear subframe. By setting the positions of the first mounting point 301, the second mounting point 302, the third mounting point 401 and the fourth mounting point 402, the steer-by-wire gear 101, the electric power steering gear 203 and the rear wheel steering gear 102 can all realize their respective functions after being installed at the corresponding mounting points.

[0032] In some embodiments, the front subframe 701 is connected to the front steering knuckle 1002, and the rear subframe 706 is connected to the rear steering knuckle 1004; the front steering knuckle 1002 is detachably connected to the front brake caliper, and the rear steering knuckle 1004 is detachably connected to the rear brake caliper.

[0033] The rear steering knuckle 1004 is also used to connect with the steering tie rod.

[0034] like Figure 13 , Figure 14 As shown, for the drive-by-wire chassis system, the steering tie rod is the rear wheel steering gear tie rod 504, the front brake caliper of the electronic braking system 104 is the front electronic brake caliper 1001, and the rear brake caliper of the electronic braking system 104 is the rear electronic brake caliper 1003; for the mechanical chassis system, the steering tie rod is the toe-in tie rod 604, the front brake caliper of the hydraulic braking system 204 is the front hydraulic brake caliper 1101, and the rear brake caliper of the hydraulic braking system 204 is the rear hydraulic brake caliper 1103.

[0035] The front hydraulic brake caliper 1101 is a six-piston front hydraulic brake caliper, while the rear hydraulic brake caliper 1103 is a floating caliper dual-piston rear hydraulic brake caliper.

[0036] When the general chassis platform is equipped with the structure related to the steer-by-wire chassis system, the steer-by-wire gear 101 is connected to the first mounting point 301 and the second mounting point 302, the rear wheel steering gear 102 is connected to the third mounting point 401 and the fourth mounting point 402, the rear wheel steering gear tie rod 504 is connected to the rear steering knuckle 1004 by bolts, the front electronic brake caliper 1001 is connected to the front steering knuckle 1002 by bolts, and the rear electronic brake caliper 1003 is connected to the rear steering knuckle 1004 by bolts.

[0037] When the general chassis platform is equipped with the relevant structures of the mechanical chassis system, the electric power steering gear 203 is connected to the first mounting point 301 and the second mounting point 302, the reinforcing plate 603 is connected to the third mounting point 401 and the fourth mounting point 402, the toe-in rod 604 is connected to the rear steering knuckle 1004 by bolts, the front hydraulic brake caliper 1101 is connected to the front steering knuckle 1002 by bolts, and the rear hydraulic brake caliper 1103 is connected to the rear steering knuckle 1004 by bolts.

[0038] In some embodiments, the chassis platform may also be equipped with the active suspension 103 of the drive-by-wire chassis system and the suspension of the mechanical chassis system; such as Figure 11 As shown, the active suspension 103 in the drive-by-wire chassis system includes a front air spring 801, a front active shock absorber 802, a rear active shock absorber 803, and a rear air spring 804. The front active shock absorber 802 and the front air spring 801 are integrated together; the rear active shock absorber 803 and the rear air spring 804 are separately configured. Figure 12 As shown, the suspension in the mechanical chassis system includes a front air spring 901, a front CDC damper 902, a rear CDC damper 903, and a rear air spring 904. The front air spring 901 and the front CDC damper 902 are integrated together, while the rear CDC damper 903 and the rear air spring 904 are designed separately.

[0039] The air spring is installed between the rear lower control arm and the vehicle body.

[0040] like Figure 9 , Figure 10 As shown, the front suspension uses a double wishbone structure, and the rear suspension uses a five-link structure.

[0041] The double wishbone front suspension includes a front subframe 701, a front upper control arm (front) 702, a front upper control arm (rear) 703, a front lower control arm (front) 704, and a front lower control arm (rear) 705. The front subframe 701 is a fixed component that is bolted to the vehicle body. The inner point of the front lower control arm (front) 704 is bolted to the subframe 701 and to the front wheel steering knuckle 1002. The inner point of the front lower control arm (rear) 705 is bolted to the subframe 701 and to the front wheel steering knuckle 1002. The front upper control arm (front) 702 and its inner point are bolted to the vehicle body and to the front wheel steering knuckle 1002. The front upper control arm (rear) 703 and its inner point are bolted to the vehicle body and to the front wheel steering knuckle 1002.

[0042] The five-link rear suspension includes a rear subframe 706, a front upper rear control arm 707, a rear upper rear control arm 708, a rear lower rear control arm 709, a rear toe-adjusting rod 710, and a rear trailing arm 711. The rear subframe 706 is a fixed component, bolted to the vehicle body. The inner point of the front upper rear control arm 707 is bolted to the rear subframe 706 and bolted to the rear wheel steering knuckle 1004. The inner point of the rear upper rear control arm 708 is bolted to... The rear subframe 706 is connected to the rear wheel steering knuckle 1004 by bolts; the inner point of the rear lower controller 709 is connected to the rear subframe 706 by bolts and to the rear wheel steering knuckle 1004 by bolts; the inner point of the rear toe-in adjusting rod 710 is connected to the rear subframe 706 by bolts and to the rear wheel steering knuckle 1004 by bolts; the inner point of the rear trailing arm 711 is connected to the rear subframe 706 by bolts and to the vehicle body by bolts.

[0043] The front steering gear 101 is connected to the first mounting point 301 on the left front and the second mounting point 302 on the right front on the front subframe; the rear steering gear 102 is connected to the third mounting point 401 on the left front and the fourth mounting point 402 on the right front on the rear subframe.

[0044] The front and rear steering knuckles are sub-components on the wheel-end brake assembly; please refer to [reference needed]. Figure 13 and Figure 14 .

[0045] The front shock absorber and the front air spring are integrated into one unit. The upper end is bolted to the body tower and the lower end is bolted to the lower control arm 705. The shock absorber and the rear air spring are separate units. The shock absorber is bolted to the body and the lower end is bolted to the control arm 709. The upper end of the spring contacts the body but is not connected, and the lower end is connected to the lower control arm 709.

[0046] When the universal chassis platform provided in this application is equipped with the structure related to the steer-by-wire chassis system, the steer-by-wire gear 101 is connected to the first mounting point 301 and the second mounting point 302, the rear wheel steering gear 102 is connected to the third mounting point 401 and the fourth mounting point 402, the rear wheel steering gear tie rod 504 is connected to the rear steering knuckle 1004 by bolts, the front electronic brake caliper 1001 is connected to the front steering knuckle 1002 by bolts, and the rear electronic brake caliper 1003 is connected to the rear steering knuckle 1004 by bolts; the integrated front active shock absorber 802 and front air spring 801 are connected to the front subframe, and the rear active shock absorber 803 and rear air spring 804 are connected to the rear subframe.

[0047] When the universal chassis platform provided in this application is equipped with a mechanical chassis system, the electric power steering gear 203 is connected to the first mounting point 301 and the second mounting point 302, the reinforcing plate 603 is connected to the third mounting point 401 and the fourth mounting point 402, the toe-in rod 604 is connected to the rear steering knuckle 1004 by bolts, the front hydraulic brake caliper 1101 is connected to the front steering knuckle 1002 by bolts, the rear hydraulic brake caliper 1103 is connected to the rear steering knuckle 1004 by bolts, the integrated front air spring 901 and front CDC damper 902 are connected to the front subframe, and the rear CDC damper 903 and rear air spring 904 are connected to the rear subframe.

[0048] This application provides a universal chassis platform that can be equipped with steer-by-wire technology-related structures such as steering-by-wire, rear-wheel steering, active suspension, and electronic braking. It is also backward compatible with traditional mechanical chassis-related structures, thus enabling the integration of new technologies while also accommodating traditional chassis models.

[0049] The platform's steering system installation locations are standardized, with two mounting points on the front subframe. The design space of the front subframe accommodates the placement of both steer-by-wire and electric power steering systems, allowing for switching between them. Two mounting points are reserved at the front of the rear subframe to accommodate the rear-wheel steering system. When rear-wheel steering is not in use, a reinforcing plate can be installed to increase strength.

[0050] The platform's suspension system adopts a front double wishbone and rear five-link structure. For the elastic components, the front shock absorber and air spring are integrated, while the rear shock absorber and air spring are separate. The layout is compatible with both passive shock absorbers (CDC-dampers) and active shock absorbers, as well as air springs and coil springs. This allows for compatibility between active and passive suspension systems, and various combinations can be used to achieve diverse optional configurations.

[0051] The platform's braking system has sufficient space for both hydraulic and electronic brake calipers. The standardized design of the steering knuckle interface allows for the installation of both hydraulic and electronic calipers.

[0052] This application embodiment also provides a steer-by-wire chassis system, including the aforementioned general chassis platform, steer-by-wire gear, and rear-wheel steering gear; The steer-by-wire system is connected to the first mounting point and the second mounting point; The rear wheel steering gear is connected to the third and fourth mounting points.

[0053] In addition, a drive-by-wire chassis system also includes an electronic braking system and an active suspension; the electronic braking system includes a front electronic brake caliper 1001 and a rear electronic brake caliper 1003; the active suspension includes an integrated front active damper 802 and a front air spring 801, a rear active damper 803 and a rear air spring 804.

[0054] The rear wheel steering linkage 504 is connected to the rear steering knuckle 1004 by bolts; the front electronic brake caliper 1001 is connected to the front steering knuckle 1002 by bolts; and the rear electronic brake caliper 1003 is connected to the rear steering knuckle 1004 by bolts. The integrated front active shock absorber 802 and front air spring 801 are connected to the front subframe, and the rear active shock absorber 803 and rear air spring 804 are connected to the rear subframe.

[0055] This application also provides a mechanical chassis system, including the aforementioned general chassis platform and electric power steering. The electric power steering gear is connected to the first mounting point and the second mounting point.

[0056] Optionally, the reinforcing plate is connected to the third and fourth mounting points.

[0057] In addition, a mechanical chassis system also includes a hydraulic braking system and a passive suspension; the hydraulic braking system includes a front hydraulic brake caliper 1101 and a rear hydraulic brake caliper 1103; the passive suspension includes an integrated front air spring 901 and a front CDC damper 902, a rear CDC damper 903 and a rear air spring 904.

[0058] Connect the electric power steering gear 203 to the first mounting point 301 and the second mounting point 302; connect the reinforcing plate 603 to the third mounting point 401 and the fourth mounting point 402; connect the toe-in rod 604 to the rear steering knuckle 1004 with bolts; connect the front hydraulic brake caliper 1101 to the front steering knuckle 1002 with bolts; connect the rear hydraulic brake caliper 1103 to the rear steering knuckle 1004 with bolts; connect the integrated front air spring 901 and front CDC damper 902 to the front subframe; connect the rear CDC damper 903 and rear air spring 904 to the rear subframe.

[0059] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0060] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A universal chassis platform, characterized in that, include: Front suspension and rear suspension; A first mounting point and a second mounting point are provided on the front subframe of the front suspension; A third and a fourth mounting point are provided on the rear subframe of the rear suspension; The first and second mounting points are used for detachable connection with the steer-by-wire system and the electric power steering system; The third and fourth mounting points are used for detachable connection with the rear wheel steering gear.

2. A universal chassis platform as described in claim 1, characterized in that, It also includes a reinforcing plate, which is detachably connected to the third and fourth mounting points.

3. A universal chassis platform as described in claim 1, characterized in that, The first and second mounting points, as well as the third and fourth mounting points, are all symmetrically arranged about the ZX plane of the vehicle; where Z is the vertical direction of the vehicle and X is the longitudinal direction of the vehicle.

4. A universal chassis platform as described in claim 1, characterized in that, The front subframe is connected to the front steering knuckle, and the rear subframe is connected to the rear steering knuckle; the front steering knuckle is used for detachable connection with the front brake caliper, and the rear steering knuckle is used for detachable connection with the rear brake caliper.

5. A universal chassis platform as described in claim 4, characterized in that, The rear steering knuckle is also used to connect to the steering tie rod.

6. A universal chassis platform as described in claim 1, characterized in that, The front suspension uses a double wishbone structure, and the rear suspension uses a five-link structure.

7. A universal chassis platform as described in claim 1, characterized in that, Threaded holes are provided at the first, second, third, and fourth mounting points.

8. A drive-by-wire chassis system, characterized in that, Includes a universal chassis platform, a steer-by-wire system, and a rear-wheel steering system as described in any one of claims 1-7; The steer-by-wire system is connected to the first mounting point and the second mounting point; The rear wheel steering gear is connected to the third and fourth mounting points.

9. A mechanical chassis system, characterized in that, Includes a universal chassis platform and an electric power steering system as described in any one of claims 1-7; The electric power steering gear is connected to the first mounting point and the second mounting point.

10. A mechanical chassis system as described in claim 9, characterized in that, The reinforcing plate is connected to the third and fourth mounting points.

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