Chassis and vehicle

Abstract

The utility model discloses a chassis and a vehicle. The chassis comprises a longitudinal beam; the oil tank assembly is respectively connected with the plurality of middle section cross beams; the battery assembly is positioned among the plurality of rear-section cross beams in the front-back direction and is connected with the plurality of rear-section cross beams; and the rear axle component is positioned between the plurality of middle-section cross beams and the plurality of rear-section cross beams in the front-back direction. Therefore, the oil tank assemblies are arranged between the two longitudinal beams in a left-right spaced mode, the oil tank assemblies and the two longitudinal beams are connected with the multiple middle-section cross beams, the battery assembly is connected with the multiple rear-section cross beams, the rear axle piece is arranged between the multiple middle-section cross beams and the multiple rear-section cross beams, and the rear end of the transmission shaft is in transmission connection with the rear axle piece. Through reasonable arrangement of the chassis structure and related parts on the chassis, the structural layout of the chassis can be more reasonable, so that the structural layout of the chassis can be optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a chassis and a vehicle. Background Art

[0002] The vehicle chassis adopts the method of overlapping crossbeams and longitudinal beams. After adding the power system battery to the existing chassis, due to the small size and capacity of the power battery, its mounting bracket mechanism is arranged on the inner side of the left and right longitudinal beams, and the transmission bridge is changed to an integral bridge structure that runs through the front and back.

[0003] In the related art, after the rear axle drive bridge is set as an integral bridge structure, the relevant components on the chassis, such as the fuel tank, rear axle drive shaft, exhaust system and other structures, will change in size and position. On the one hand, the original chassis layout structure can no longer be used directly, so there is an urgent need for an optimization solution for the chassis structure. On the other hand, the change in the position of the components not only easily leads to the structure on the chassis being not compact enough, but also the installation settings between the components are prone to mutual interference, or the connection and fixation between the components and the structural beams on the chassis are unreasonable, which will cause the installation settings of the components on the chassis to be unstable. Utility Model Content

[0004] The utility model is intended to solve at least one of the technical problems in the prior art. To this end, the utility model proposes a chassis with a more reasonable structural layout.

[0005] The utility model further provides a vehicle.

[0006] According to the chassis of the embodiment of the present invention, it includes: a longitudinal beam, which is extended in the front-to-back direction and is in two pieces, and the two longitudinal beams are spaced apart in the left-right direction, and the two longitudinal beams are respectively a first longitudinal beam and a second longitudinal beam; a cross beam, which is extended in the left-to-right direction and is respectively connected to the two longitudinal beams, and the cross beam includes a plurality of middle cross beams spaced apart in the front-to-back direction and a plurality of rear cross beams spaced apart in the front-to-back direction, a plurality of the middle cross beams are arranged adjacent to the middle of the longitudinal beam in the front-to-back direction, and a plurality of the rear cross beams are arranged adjacent to the rear end of the longitudinal beam; a fuel tank assembly, which is arranged between the two longitudinal beams in the left-to-right direction and adjacent to the first longitudinal beam, and the fuel tank assembly is connected to the first longitudinal beam and to the second longitudinal beam The fuel tank assembly is arranged at intervals, and is respectively connected to multiple middle section cross beams; the battery assembly, the battery assembly is arranged between the two longitudinal beams in the left-right direction, and the battery assembly is located between the multiple rear section cross beams in the front-to-back direction and is connected to the multiple rear section cross beams; the rear axle assembly, the rear axle assembly includes a rear axle member and a drive shaft, the drive shaft is extended in the front-to-back direction and is located between the fuel tank assembly and the exhaust system, the rear axle member is extended in the left-to-right direction and is connected to the two longitudinal beams, the rear end of the drive shaft is transmission-connected to the rear axle member, the rear axle member is suitable for transmission-connected to the left and right rear wheels of the vehicle, and the rear axle member is located between the multiple middle section cross beams and the multiple rear section cross beams in the front-to-back direction.

[0007] Therefore, the fuel tank assembly is arranged at intervals on the left and right between the two longitudinal beams, and both are connected to multiple middle cross beams, the battery assembly is connected to multiple rear cross beams, the rear axle member is arranged between the multiple middle cross beams and the multiple rear cross beams, and the rear end of the drive shaft is connected to the rear axle member. By reasonably arranging the chassis structure and related components on the chassis, the structural layout of the chassis can be made more reasonable, thereby optimizing the structural layout of the chassis.

[0008] According to some embodiments of the present invention, there are three middle cross beams, and the two middle cross beams are respectively the first cross beam, the second cross beam and the third cross beam, and the distance between the first cross beam and the second cross beam in the front-to-back direction is smaller than the distance between the second cross beam and the third cross beam in the front-to-back direction.

[0009] According to some embodiments of the present invention, the chassis also includes a connecting half-beam, which extends in the left and right directions and has one end connected to the first longitudinal beam, the other end of the connecting half-beam is spaced apart from the second longitudinal beam, and the connecting half-beam is arranged adjacent to the third cross beam and is respectively connected to the third cross beam and the fuel tank assembly.

[0010] According to some embodiments of the present invention, the rear axle assembly further includes a leaf spring member, which is extended in the front-to-rear direction and is in two numbers. The two leaf spring members are respectively connected to the left and right ends of the rear axle member, and the front end of the leaf spring member is connected to the longitudinal beam. The position where the front end of the leaf spring member is connected to the longitudinal beam is located between the second cross beam and the third cross beam.

[0011] According to some embodiments of the present invention, the transmission shaft is connected to the first crossbeam.

[0012] According to some embodiments of the present utility model, a fuel tank isolation valve bracket, a charger bracket, a carbon canister bracket and a plurality of wiring harness brackets are provided on the third cross beam. The fuel tank isolation valve bracket is suitable for installing the fuel tank isolation valve, the charger bracket is suitable for installing the charger, the carbon canister bracket is suitable for installing the carbon canister, and the plurality of wiring harness brackets are suitable for installing the wiring harness on the vehicle frame.

[0013] According to some embodiments of the present invention, there are two rear cross beams, which are respectively the fourth cross beam and the fifth cross beam. The fourth cross beam and the fifth cross beam are respectively spaced apart on the front and rear sides of the battery assembly. The rear axle assembly also includes a leaf spring member, which is extended in the front and rear directions and is two in number. The two leaf spring members are respectively connected to the left and right ends of the rear axle member, and the rear end of the leaf spring member is connected to the fifth cross beam.

[0014] According to some embodiments of the present invention, the battery assembly includes a first battery component and a second battery component, the first battery component and the second battery component are arranged between the fourth beam and the fifth beam, and the first battery component and the second battery component are spaced apart in the up and down directions.

[0015] According to some embodiments of the present invention, the chassis also includes a tray, which is arranged below the two longitudinal beams, the first battery component is arranged in the tray, and the second battery component is arranged above the first battery component at an interval and is connected to the fourth cross beam and the fifth cross beam on the front and rear sides respectively.

[0016] The vehicle according to the present invention includes the chassis described above.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of a chassis according to an embodiment of the present utility model;

[0020] Figure 2 It is a partial schematic diagram of a chassis according to an embodiment of the present utility model.

[0021] Reference numerals:

[0022] 100, chassis;

[0023] 10. Stringer; 11. First stringer; 12. Second stringer;

[0024] 20. Crossbeam; 21. First crossbeam; 22. Second crossbeam; 23. Third crossbeam; 24. Fourth crossbeam; 25. Fifth crossbeam; 26. Fuel tank isolation valve bracket; 27. Charger; 28. Middle crossbeam; 29. Rear crossbeam;

[0025] 30. Fuel tank assembly; 40. Exhaust system;

[0026] 50. Battery assembly; 51. First battery component; 52. Second battery component;

[0027] 60. Rear axle assembly; 61. Drive shaft; 62. Rear axle components;

[0028] 70. Connecting half beams; 80. Leaf spring components. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0030] Reference below Figure 1-Figure 2 The chassis 100 according to the embodiment of the present invention will be described. The chassis 100 according to the embodiment of the present invention may be applied to a vehicle.

[0031] Combine Figure 1 As shown, the chassis 100 according to the embodiment of the present invention may mainly include: a longitudinal beam 10, a cross beam 20, a fuel tank assembly 30, a battery assembly 50 and a rear axle assembly 60, wherein the longitudinal beam 10 is extended in the front-to-rear direction, and there are two longitudinal beams 10, the first longitudinal beam 11 and the second longitudinal beam 12, respectively. The first longitudinal beam 11 and the second longitudinal beam 12 are spaced apart from each other on the left and right sides, so that the chassis 100 can be kept balanced in the left-right direction, the front-to-rear torsional stiffness of the entire vehicle can be improved, and stable support can be provided for other structures on the chassis 100 in the front-to-rear direction.

[0032] Furthermore, the crossbeam 20 extends in the left-right direction and is connected to the two longitudinal beams 10, respectively. This maintains the structural balance of the chassis 100, improves the torsional rigidity of the vehicle in the left-right direction, and provides stable left-right support for other structures on the chassis 100. The crossbeam 20 includes a plurality of middle crossbeams 28 spaced apart in the front-to-back direction and a plurality of rear crossbeams 29 spaced apart in the front-to-back direction. The middle crossbeams 28 are disposed adjacent to the middle of the longitudinal beams 10 in the front-to-back direction, and the rear crossbeams 29 are disposed adjacent to the rear ends of the longitudinal beams 10. This not only enhances the structural stability between the two longitudinal beams 10 and improves the torsional resistance of the chassis 100 in the left-to-right direction, but also provides more support locations for components on the chassis 100, facilitating the arrangement of structures on the chassis 100.

[0033] Furthermore, the fuel tank assembly 30 is disposed between the two longitudinal beams 10 in the left-right direction, adjacent to the first longitudinal beam 11. The fuel tank assembly 30 is connected to the first longitudinal beam 11 and spaced apart from the second longitudinal beam 12. This arrangement not only allows the first longitudinal beam 11 to provide support for the fuel tank assembly 30, thereby enabling installation of the fuel tank assembly 30 on the chassis 100, but also allows the fuel tank assembly 30 to avoid the position between the two longitudinal beams 10, adjacent to the second longitudinal beam 12, thereby facilitating the arrangement of more components between the two longitudinal beams 10. Arranging the fuel tank assembly 30 to be simultaneously connected to multiple mid-section crossbeams 28 increases the number of connection locations for the fuel tank assembly 30 on the chassis 100, thereby ensuring the structural reliability of the fuel tank assembly 30 on the chassis 100.

[0034] Furthermore, the battery assembly 50 is disposed between the two longitudinal beams 10 in the left-right direction and between and fixedly connected to the plurality of rear cross beams 29 in the front-back direction, so that the battery assembly 50 is arranged behind the fuel tank assembly 30. This facilitates the arrangement of the battery assembly 50 on the chassis 100 and ensures a reasonable layout of the battery assembly 50 on the chassis 100. Furthermore, the battery assembly 50 is connected to the plurality of rear cross beams 29, which ensures the structural stability of the battery assembly 50 on the chassis 100.

[0035] Furthermore, the chassis 100 also includes a rear axle assembly 60, which includes a rear axle member 62 and a drive shaft 61. The drive shaft 61 extends in the front-to-rear direction and is located between the fuel tank assembly 30 and the exhaust system 40. This allows for a unified axle structure extending front-to-rear on the chassis 100, which also facilitates a more compact structure of the fuel tank assembly 30 and the drive shaft 61 on the chassis 100. The rear axle member 62 extends in the left-to-right direction and is connected to the two longitudinal beams 10. This ensures the balance of the rear axle member 62 on the chassis 100 and ensures stable power transmission to the rear axle member 62. The rear end of the drive shaft 61 is in driving connection with the rear axle member 62, allowing the power from the rear axle member 62 to be transmitted forward through the drive shaft 61, thereby achieving power transmission within the chassis 100. The rear axle member 62 is adapted to be connected to the left and right rear wheels of the vehicle to drive the left and right rear wheels to rotate simultaneously, thereby providing a stable driving force for the vehicle.

[0036] In an embodiment of the present invention, the rear bridge member 62 is located between multiple middle cross beams 28 and multiple rear cross beams 29 in the front-to-rear direction, so that the rear bridge member 62 can avoid multiple middle cross beams 28 and multiple rear cross beams 29. Such an arrangement can, on the one hand, ensure the structural independence of the rear bridge member 62 on the chassis 100, and on the other hand, strengthen the torsional stiffness of the rear bridge member 62 along the left-right direction, which is beneficial to improving the structural stability of the rear bridge member 62.

[0037] Furthermore, the exhaust system 40 is disposed between the two longitudinal beams 10, adjacent to the second longitudinal beam 12, in the left-right direction. The exhaust system 40 is connected to the second longitudinal beam 12 and is spaced relative to the fuel tank assembly 30 in the left-right direction. Thus, when both the exhaust system 40 and the fuel tank assembly 30 are disposed between the two longitudinal beams 10, the exhaust system 40 and the fuel tank assembly 30 can be independently disposed, thereby ensuring the operational reliability of the exhaust system 40 and the fuel tank assembly 30. The exhaust system 40 is connected to multiple mid-section cross members 28, thereby increasing the number of connection locations for the exhaust system 40 on the chassis 100 and ensuring the structural reliability of the exhaust system 40 on the chassis 100.

[0038] In an embodiment of the present utility model, the fuel tank assembly 30 and the exhaust system 40 are arranged side by side between the two longitudinal beams 10, and the sides of the fuel tank assembly 30 and the exhaust system 40 facing away from each other are respectively connected to the first longitudinal beam 11 and the second longitudinal beam 12, and both are connected to multiple middle cross beams 28. This not only ensures the structural stability of the fuel tank assembly 30 and the exhaust system 40 on the chassis 100 at the same time, but also is conducive to the integrated layout of the structure on the chassis 100, and can make the setting positions of the fuel tank assembly 30 and the exhaust system 40 on the chassis 100 more reasonable, thereby optimizing the structural layout of the chassis 100.

[0039] Therefore, the fuel tank assembly 30 is arranged at intervals between the two longitudinal beams 10, and both are connected to multiple middle section cross beams 28, the battery assembly 50 is connected to multiple rear section cross beams 29, the rear bridge member 62 is arranged between the multiple middle section cross beams 28 and the multiple rear section cross beams 29, and the rear end of the transmission shaft 61 is connected to the rear bridge member 62 for transmission. By reasonably arranging the chassis 100 structure and related components on the chassis 100, the structural layout of the chassis 100 can be made more reasonable, thereby optimizing the structural layout of the chassis 100.

[0040] Combine Figure 1 As shown, there are three middle cross beams 28, and the two middle cross beams 28 are the first cross beam 21, the second cross beam 22 and the third cross beam 23. The distance between the first cross beam 21 and the second cross beam 22 in the front-to-back direction is smaller than the distance between the second cross beam 22 and the third cross beam 23 in the front-to-back direction, that is, in the front-to-back direction, the second cross beam 22 is located between the first cross beam 21 and the third cross beam 23 and is closer to the first cross beam 21, so that the second cross beam 22 can be connected to the appropriate positions on the fuel tank assembly 30 and the exhaust system 40, thereby ensuring the convenience and reliability of the connection between the fuel tank assembly 30 and the exhaust system 40 and the second cross beam 22.

[0041] It should be noted that the distance between the second cross beam 22 and the first cross beam 21 in the front-to-rear direction and the distance between the second cross beam 22 and the third cross beam 23 in the front-to-rear direction can be set according to the size of the fuel tank assembly 30 and the exhaust system 40 .

[0042] Combine Figure 1 As shown, the chassis 100 also includes a connecting half-beam 70, which extends in the left-right direction to enhance its torsional stiffness. One end of the connecting half-beam 70 is connected to the first longitudinal beam 11, enabling the first longitudinal beam 11 to provide stable and reliable support for the connecting half-beam 70. The other end of the connecting half-beam 70 is spaced from the second longitudinal beam 12, allowing the connecting half-beam 70 to avoid the drive shaft 61 between the fuel tank assembly 30 and the exhaust system 40, ensuring adequate wiggle room for the drive shaft 61. The connecting half-beam 70 is positioned adjacent to the third crossbeam 23 and connected to both the third crossbeam 23 and the fuel tank assembly 30, allowing the third crossbeam 23 to provide stable support for the connecting half-beam 70. When the fuel tank assembly 30 is connected to the connecting half-beam 70, the connecting half-beam 70 provides stable and reliable support for the fuel tank assembly 30, thereby ensuring the structural reliability of the fuel tank assembly 30 on the chassis 100.

[0043] Combine Figure 1As shown, the rear axle assembly 60 also includes a leaf spring member 80, which is extended in the front-to-rear direction and is in two numbers. The two leaf spring members 80 are respectively connected to the left and right ends of the rear axle member 62. In this way, the leaf spring member 80 can support and reduce vibration on both the left and right sides of the rear axle member 62, thereby ensuring the stability of the left and right sides of the vehicle, and thus making the vehicle have good handling and safety.

[0044] Combine Figure 1 As shown, the front end of the leaf spring member 80 is connected to the longitudinal beam 10, and the location where the front end of the leaf spring member 80 is connected to the longitudinal beam 10 is between the second cross member 22 and the third cross member 23. There are two rear cross members 29, namely the fourth cross member 24 and the fifth cross member 25. The rear end of the leaf spring member 80 is connected to the fifth cross member 25. This arrangement allows the leaf spring member 80 to correspond to the position between the front end of the third cross member 23 and the fifth cross member 25 in the front-to-back direction. In this way, the leaf spring member 80 can be arranged around the rear axle member 62 and can correspond to the left and right rear wheels of the vehicle, thereby providing good support and vibration reduction for the vehicle.

[0045] Combine Figure 1 As shown, the drive shaft 61 is connected to the first crossbeam 21. Specifically, in this embodiment of the present invention, the drive shaft 61 extends forward and backward and passes under the first crossbeam 21. A drive shaft mounting bracket is provided on the first crossbeam 21 to support the drive shaft 61. This reduces vibration of the drive shaft 61, improves vehicle safety, and enhances the riding experience.

[0046] Combine Figure 1 As shown, a fuel tank isolation valve bracket 26, a charger bracket, a carbon canister bracket and a plurality of wiring harness brackets are provided on the cross beam 20. The fuel tank isolation valve bracket 26, the charger bracket, the carbon canister bracket and the plurality of wiring harness brackets are spaced apart on the cross beam 20. This ensures the reliability of the arrangement of the fuel tank isolation valve bracket 26, the charger bracket, the carbon canister bracket and the plurality of wiring harness brackets on the chassis 100, so as to facilitate the fuel tank isolation valve bracket 26, the charger bracket, the carbon canister bracket and the plurality of wiring harness brackets to fix the corresponding components.

[0047] In the embodiment of the present invention, the fuel tank isolation valve bracket 26 is suitable for mounting the fuel tank isolation valve, ensuring the reliable installation of the fuel tank isolation valve on the chassis 100. The charger bracket is suitable for mounting the charger 27, ensuring the reliable installation of the charger 27 on the chassis 100. The carbon canister bracket is suitable for mounting the carbon canister, ensuring the reliable installation of the carbon canister on the chassis 100. Multiple wiring harness brackets are suitable for mounting the wiring harness on the vehicle frame, which can make the wiring harness routing on the chassis 100 more regular, thereby preventing the wiring harness from interfering with other components, and helping to ensure the operational reliability of other structures on the chassis 100.

[0048] Combine Figure 2 As shown, the battery assembly 50 includes a first battery component 51 and a second battery component 52. The first battery component 51 and the second battery component 52 are disposed between the fourth cross member 24 and the fifth cross member 25, and the first battery component 51 and the second battery component 52 are spaced apart in the vertical direction. Specifically, according to an embodiment of the present invention, a double-layer battery assembly 50 can be disposed in the chassis 100, and both layers of the battery assembly 50 are disposed between the fourth cross member 24 and the fifth cross member 25, that is, the battery assembly 50 is disposed at the rear of the vehicle. This can optimize the weight distribution of the vehicle and help improve the stability and handling of the vehicle.

[0049] Furthermore, providing the first battery component 51 and the second battery component 52 can increase the energy density of the vehicle, thereby extending the cruising range of the vehicle.

[0050] Combine Figure 2 As shown, the chassis 100 also includes a tray, which is arranged below the two longitudinal beams 10, the first battery component 51 is arranged in the tray, the second battery component 52 is arranged above the first battery component 51 at intervals, and the front and rear sides of the second battery component 52 are respectively connected to the fourth cross beam 24 and the fifth cross beam 25, so that the tray can provide a stable and reliable setting position for the first battery component 51, and the fourth cross beam 24 and the fifth cross beam 25 can fix the second battery component 52, thereby ensuring the setting stability of the first battery component 51 and the second battery component 52 on the chassis 100.

[0051] According to an embodiment of the present invention, a vehicle includes a chassis 100 according to an embodiment of the present invention. In the chassis 100 of the present invention, a first cross member 21, a second cross member 22, a third cross member 23, a fourth cross member 24, and a fifth cross member 25 are sequentially arranged on two longitudinal beams 10 in a front-to-rear direction. The fuel tank assembly 30 and the exhaust system 40 are both connected to the first cross member 21, the second cross member 22, and the third cross member 23, and the fuel tank assembly 30 and the exhaust system 40 are spaced apart from each other. A drive shaft 61 extends front-to-rear and is located between the fuel tank assembly 30 and the exhaust system 40. The rear axle member 62 is located between the third cross member 23 and the fourth cross member 24 and is connected to the two longitudinal beams 10. The battery assembly 50 is located between the fourth cross member 24 and the fifth cross member 25 and is connected to the fourth cross member 24 and the fifth cross member 25, respectively. Compared to the prior art, after the rear axle drive axle is configured as an integral bridge structure, the structural layout of the chassis 100 can be optimized, making the structural arrangement of the chassis 100 more reasonable.

[0052] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A chassis, characterized in that: include: longitudinal beams, the longitudinal beams extending in the front-to-rear direction and being two in number, the two longitudinal beams being spaced apart in the left-to-right direction, the two longitudinal beams being respectively a first longitudinal beam and a second longitudinal beam; A crossbeam extending in the left-right direction and connected to the two longitudinal beams, respectively, comprising a plurality of middle crossbeams spaced apart in the front-to-back direction and a plurality of rear crossbeams spaced apart in the front-to-back direction, wherein the plurality of middle crossbeams are disposed adjacent to the middle portions of the longitudinal beams in the front-to-back direction, and the plurality of rear crossbeams are disposed adjacent to the rear ends of the longitudinal beams; a fuel tank assembly, the fuel tank assembly being disposed between the two longitudinal beams in the left-right direction and adjacent to the first longitudinal beam, the fuel tank assembly being connected to the first longitudinal beam and spaced apart from the second longitudinal beam, and the fuel tank assembly being respectively connected to the plurality of middle cross beams; a battery assembly, the battery assembly being disposed between the two longitudinal beams in the left-right direction and being located between and connected to the plurality of rear cross beams in the front-rear direction; A rear axle assembly, the rear axle assembly includes a rear axle member and a drive shaft, the drive shaft extends in the front-to-rear direction and is located between the fuel tank assembly and the exhaust system, the rear axle member extends in the left-to-right direction and is connected to the two longitudinal beams, the rear end of the drive shaft is transmission-connected to the rear axle member, the rear axle member is suitable for transmission connection with the left and right rear wheels of the vehicle, and the rear axle member is located between multiple middle cross beams and multiple rear cross beams in the front-to-rear direction.

2. The chassis according to claim 1, characterized in that There are three middle cross beams, two of which are the first cross beam, the second cross beam and the third cross beam. The distance between the first cross beam and the second cross beam in the front-to-back direction is smaller than the distance between the second cross beam and the third cross beam in the front-to-back direction.

3. The chassis according to claim 2, characterized in that It also includes a connecting half beam, which extends in the left and right directions and has one end connected to the first longitudinal beam. The other end of the connecting half beam is spaced apart from the second longitudinal beam. The connecting half beam is arranged adjacent to the third cross beam and is respectively connected to the third cross beam and the fuel tank assembly.

4. The chassis according to claim 2, characterized in that The rear axle assembly also includes a leaf spring component, which is extended in the front-to-back direction and is in two pieces. The two leaf spring components are respectively connected to the left and right ends of the rear axle component, and the front end of the leaf spring component is connected to the longitudinal beam. The position where the front end of the leaf spring component is connected to the longitudinal beam is located between the second cross beam and the third cross beam.

5. The chassis according to claim 2, characterized in that The transmission shaft is connected to the first crossbeam.

6. The chassis according to claim 2, characterized in that The third crossbeam is provided with a fuel tank isolation valve bracket, a charger bracket, a carbon canister bracket and multiple wiring harness brackets. The fuel tank isolation valve bracket is suitable for installing the fuel tank isolation valve, the charger bracket is suitable for installing the charger, the carbon canister bracket is suitable for installing the carbon canister, and the multiple wiring harness brackets are suitable for installing the wiring harness on the vehicle frame.

7. The chassis according to claim 4, characterized in that There are two rear cross beams, which are the fourth cross beam and the fifth cross beam respectively. The fourth cross beam and the fifth cross beam are respectively arranged at intervals on the front and rear sides of the battery assembly, and the rear end of the leaf spring is connected to the fifth cross beam.

8. The chassis according to claim 7, characterized in that The battery assembly includes a first battery component and a second battery component. The first battery component and the second battery component are arranged between the fourth beam and the fifth beam, and the first battery component and the second battery component are spaced apart in the up and down direction.

9. The chassis according to claim 8, characterized in that It also includes a tray, which is arranged below the two longitudinal beams, the first battery component is arranged in the tray, and the second battery component is arranged above the first battery component at intervals and is connected to the fourth beam and the fifth beam on the front and rear sides respectively.

10. A vehicle, characterized in that: A chassis comprising the chassis according to any one of claims 1 to 9.

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