Chassis and vehicle

Abstract

The utility model discloses a chassis and a vehicle. The chassis comprises a first longitudinal beam and a second longitudinal beam, an oil tank assembly; a first cross beam; the connecting half beam extends in the left-right direction and is arranged on the front side of the first cross beam at intervals, the first cross beam is arranged on the upper rear portion of the connecting half beam at intervals, the connecting half beam is connected with the oil tank assembly, and the first cross beam is connected with the connecting half beam. Therefore, due to the fact that the distance between the connecting half beam and the oil tank assembly is short, connection between the connecting half beam and the oil tank assembly is stable and firm, the distance between the first cross beam and the connecting half beam is short, and connection between the first cross beam and the connecting half beam is stable and firm, the overall connecting stability can be guaranteed; the first cross beam is prevented from being directly connected with the oil tank assembly, the distance between the first cross beam and the oil tank assembly is prevented from being too long, and therefore connection instability is caused, the oil tank assembly can be fixed through the connecting half beam and the first cross beam, and the stability and reliability of installation and arrangement of the oil tank assembly on the chassis can be further improved.

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 way of overlapping cross beams and longitudinal beams. After adding a power system battery to the existing chassis, due to the small volume and capacity of the power battery, its mounting bracket mechanism is arranged inside the left and right longitudinal beams, and the drive axle is changed to an integral axle structure that runs through from front to back.

[0003] In the related art, after the original chassis structure is changed to an integral axle structure, the cross beam connected to the rear end of the fuel tank will move backward due to the requirements of the chassis structure layout. This will increase the distance between the cross beam and the fuel tank in the front-back direction, and the connecting components between the cross beam and the fuel tank will be too long, prone to deformation and even damage. This will lead to unstable connection between the cross beam and the fuel tank assembly, and reduce the stability and reliability of the chassis. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a chassis which is more stable and reliable.

[0005] The utility model further provides a vehicle.

[0006] The chassis according to the embodiment of the utility model includes: longitudinal beams, which are arranged to extend in the front-back direction and there are two of them. The two longitudinal beams are respectively a first longitudinal beam and a second longitudinal beam, and the first longitudinal beam and the second longitudinal beam are arranged at intervals in the left-right direction; a fuel tank assembly, which is arranged between the two longitudinal beams and adjacent to the first longitudinal beam, and the fuel tank assembly is connected to the first longitudinal beam; a first cross beam, which is arranged to extend in the left-right direction and is respectively connected to the two longitudinal beams. The first cross beam is located above the fuel tank assembly and adjacent to the rear end of the fuel tank assembly; a connecting half beam, which is arranged to extend in the left-right direction and is arranged at intervals in front of the first cross beam. The first end of the connecting half beam is connected to the first longitudinal beam, the second end of the connecting half beam is arranged at intervals from the second longitudinal beam, the first cross beam is arranged at intervals above and behind the connecting half beam, the connecting half beam is connected to the fuel tank assembly, and the first cross beam is connected to the connecting half beam.

[0007] Thus, by connecting the connecting half-beam to the fuel tank assembly and connecting the first cross-beam to the connecting half-beam, since the distance between the connecting half-beam and the fuel tank assembly is short, the connection between the connecting half-beam and the fuel tank assembly is stable and firm. The distance between the first cross-beam and the connecting half-beam is short, and the connection between the first cross-beam and the connecting half-beam is stable and firm. This can not only ensure the overall connection stability and prevent the first cross-beam from being directly connected to the fuel tank assembly with an excessive distance resulting in unstable connection, but also since both the connecting half-beam and the first cross-beam can play a role in fixing the fuel tank assembly, the stability and reliability of the installation of the fuel tank assembly on the chassis can be further improved.

[0008] According to some embodiments of the present invention, a first mounting bracket is provided on the connecting half-beam, and the first mounting bracket is connected to the fuel tank assembly. A second mounting bracket is provided on the first cross-beam, and the second mounting bracket is connected to the connecting half-beam.

[0009] According to some embodiments of the present invention, a fuel tank isolation valve is provided on the second mounting bracket.

[0010] According to some embodiments of the present invention, a third mounting bracket is provided on the first longitudinal beam, and the third mounting bracket is connected to the fuel tank assembly. The third mounting bracket is spaced apart from the first mounting bracket.

[0011] According to some embodiments of the present invention, there are multiple third mounting brackets, and the multiple third mounting brackets are spaced apart.

[0012] According to some embodiments of the present invention, the chassis further includes a rear axle assembly. The rear axle assembly includes a drive shaft and a rear axle member. The rear axle member extends in the left-right direction, and the left and right ends of the rear axle member are adapted to be connected to the left and right rear wheels of the vehicle. The drive shaft extends in the front-rear direction and is located between the two longitudinal beams. The rear end of the drive shaft is connected to the rear axle member. The side of the fuel tank assembly away from the first longitudinal beam in the left-right direction is spaced apart from the drive shaft. The second end of the connecting half-beam is spaced apart from the drive shaft in the left-right direction.

[0013] According to some embodiments of the present invention, the first cross-beam is spaced apart above the drive shaft and spaced apart in front of the rear axle member.

[0014] According to some embodiments of the present invention, the chassis further includes a second cross-beam. The second cross-beam extends in the left-right direction and is connected to the two longitudinal beams. The second cross-beam is spaced apart in front of the first cross-beam. A relief groove is provided in the part of the second cross-beam corresponding to the fuel tank assembly. The relief groove avoids the fuel tank assembly, and the fuel tank assembly is connected to the part of the second cross-beam corresponding to the relief groove.

[0015] According to some embodiments of the present utility model, there are a plurality of the second cross beams, and the plurality of the second cross beams are arranged at intervals in the front-rear direction.

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

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

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

[0020] Figure 2 is a partial schematic view of another perspective of the chassis according to the embodiment of the present utility model;

[0021] Figure 3 is a partial exploded view of the chassis according to the embodiment of the present utility model.

[0022] Reference Signs:

[0023] 100, chassis;

[0024] 10, longitudinal beam; 11, first longitudinal beam; 111, third mounting bracket; 12, second longitudinal beam;

[0025] 20, fuel tank assembly;

[0026] 30, first cross beam; 31, second mounting bracket;

[0027] 40, connecting half beam; 41, first mounting bracket;

[0028] 50, rear axle assembly; 51, drive shaft;

[0029] 60, second cross beam; 61, avoidance groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0031] Next, reference is made to Figures 1 - 3 Describe the chassis 100 according to the embodiment of the present utility model. The chassis 100 according to the embodiment of the present utility model can be applied to a vehicle.

[0032] Combined Figures 1 - 2 As shown, the chassis 100 according to an embodiment of the present utility model may mainly include: longitudinal beams 10, a fuel tank assembly 20, a first cross beam 30, and connecting half beams 40. Among them, the longitudinal beams 10 extend in the front-rear direction and there are two of them. The two longitudinal beams 10 are respectively a first longitudinal beam 11 and a second longitudinal beam 12. The first longitudinal beam 11 and the second longitudinal beam 12 are arranged at intervals in the left-right direction. In this way, the balance of the chassis 100 in the left-right direction can be maintained, and stable support can be provided for other structures on the chassis 100 in the front-rear direction.

[0033] Furthermore, the fuel tank assembly 20 is arranged between the two longitudinal beams 10 and adjacent to the first longitudinal beam 11. With such an arrangement, the fuel tank assembly 20 can avoid the position between the two longitudinal beams 10 close to the second longitudinal beam 12, so as to facilitate the arrangement of more components between the two longitudinal beams 10. The fuel tank assembly 20 is connected to the first longitudinal beam 11, so that the first longitudinal beam 11 can provide support for the fuel tank assembly 20 to realize the installation of the fuel tank assembly 20 on the chassis 100.

[0034] Furthermore, the first cross beam 30 extends in the left-right direction and is respectively connected to the two longitudinal beams 10, so that the first cross beam 30 can be lapped between the first longitudinal beam 11 and the second longitudinal beam 12. In this way, not only the structural stability of the first longitudinal beam 11 and the second longitudinal beam 12 on the chassis 100 can be strengthened, but also stable support can be provided for other structures on the chassis 100 in the left-right direction. The first cross beam 30 is located above the fuel tank assembly 20 and adjacent to the rear end of the fuel tank assembly 20. In this way, not only can the first cross beam 30 avoid occupying too much space of the chassis 100 in the front-rear direction, but also the first cross beam 30 can be arranged close to the rear end of the fuel tank assembly 20, which is beneficial for the first cross beam 30 to provide support for the rear end of the fuel tank assembly 20.

[0035] Furthermore, the connecting half beams 40 extend in the left-right direction and are arranged at intervals in front of the first cross beam 30. The first end of the connecting half beam 40 is connected to the first longitudinal beam 11, the second end of the connecting half beam 40 is arranged at intervals from the second longitudinal beam 12, the first cross beam 30 is arranged at intervals above the rear of the connecting half beam 40, the connecting half beam 40 is connected to the fuel tank assembly 20, and the first cross beam 30 is connected to the connecting half beam 40.

[0036] Specifically, the connecting half beams 40 extend left and right to provide support for the rear end of the fuel tank assembly 20 in the left-right direction, so as to ensure the structural reliability of the rear end of the fuel tank assembly 20. The connecting half beams 40 are arranged at intervals in front of the first cross beam 30, so that the connecting half beams 40 can be arranged adjacent to the rear end of the fuel tank assembly 20 to facilitate the connection between the rear end of the fuel tank assembly 20 and the connecting half beams 40.

[0037] Furthermore, connecting the first end of the connecting half-beam 40 to the first longitudinal beam 11 can enable the first longitudinal beam 11 to provide stable and reliable support for the connecting half-beam 40. The second end of the connecting half-beam 40 is spaced from the second longitudinal beam 12. In this way, the dimension of the connecting half-beam 40 between the two longitudinal beams 10 can be shortened, and the second end of the connecting half-beam 40 can avoid the second longitudinal beam 12, so that more component structures can be arranged between the first longitudinal beam 11 and the second longitudinal beam 12, thereby avoiding interference of components in the chassis 100.

[0038] The first cross beam 30 is located above and behind the connecting half-beam 40 and is spaced from the connecting half-beam 40. This can not only prevent the first cross beam 30 from occupying too much space in the front-rear direction of the chassis 100, but also enable the first cross beam 30 to be arranged close to the connecting half-beam 40, which is conducive to the first cross beam 30 providing support for the connecting half-beam 40.

[0039] In the embodiment of the present utility model, the connecting half-beam 40 is connected to both the first longitudinal beam 11 and the first cross beam 30, which can ensure the structural stability of the connecting half-beam 40 in the chassis 100. And the fuel tank assembly 20 is connected to the connecting half-beam 40, which can enable the connecting half-beam 40 to provide stable and reliable support for the rear end of the fuel tank assembly 20. With such an arrangement, not only can the structural layout of the chassis 100 be optimized, but also the structural stability of the fuel tank assembly 20 can be ensured.

[0040] Thus, by connecting the connecting half-beam 40 and the fuel tank assembly 20 and connecting the first cross beam 30 to the connecting half-beam 40, since the distance between the connecting half-beam 40 and the fuel tank assembly 20 is short, the connection between the connecting half-beam 40 and the fuel tank assembly 20 is stable and firm, the distance between the first cross beam 30 and the connecting half-beam 40 is short, and the connection between the first cross beam 30 and the connecting half-beam 40 is stable and firm. This can not only ensure the overall connection stability of the installation of the fuel tank assembly 20 on the chassis 100, prevent the first cross beam 30 from being directly connected to the fuel tank assembly 20 with a too long distance resulting in unstable connection, but also since both the connecting half-beam 40 and the first cross beam 30 can play a role in fixing the fuel tank assembly 20, the stability and reliability of the installation of the fuel tank assembly 20 on the chassis 100 can be further improved.

[0041] Combined with Figure 1As shown, a first mounting bracket 41 is provided on the connecting half-beam 40. The first mounting bracket 41 is connected to the fuel tank assembly 20. A second mounting bracket 31 is provided on the first cross-beam 30. The second mounting bracket 31 is connected to the connecting half-beam 40. Specifically, the fuel tank assembly 20 and the connecting half-beam 40 are connected through the first mounting bracket 41. In this way, the connection between the fuel tank assembly 20 and the connecting half-beam 40 can be realized without changing the structures of the connecting half-beam 40 and the fuel tank assembly 20. Similarly, the connecting half-beam 40 and the first cross-beam 30 are connected through the second mounting bracket 31. In this way, the connection between the connecting half-beam 40 and the first cross-beam 30 can be realized without changing the structures of the connecting half-beam 40 and the first cross-beam 30. Such a setting can facilitate the assembly of the vehicle chassis 100.

[0042] According to an embodiment of the present invention, a fuel tank isolation valve is provided on the second mounting bracket 31. Specifically, in the embodiment of the present invention, the second mounting bracket 31 is actually the mounting bracket of the fuel tank isolation valve. Connecting the connecting half-beam 40 and the first cross-beam 30 through the mounting bracket of the fuel tank isolation valve can increase the functions of the components in the chassis 100, which is beneficial to reducing the number of components in the chassis 100, reducing the weight of the chassis 100, and improving the lightweight of the whole vehicle.

[0043] Combined with Figure 1 As shown, a third mounting bracket 111 is provided on the first longitudinal beam 11. The third mounting bracket 111 is connected to the fuel tank assembly 20. The third mounting bracket 111 and the first mounting bracket 41 are arranged at intervals. Specifically, the first longitudinal beam 11 and the fuel tank assembly 20 are connected through the third mounting bracket 111. In this way, the connection between the fuel tank assembly 20 and the first longitudinal beam 11 can be realized without changing the structures of the connecting half-beam 40 and the first longitudinal beam 11. Both the third mounting bracket 111 and the first mounting bracket 41 are connected to the fuel tank assembly 20. Arranging the third mounting bracket 111 and the first mounting bracket 41 at intervals can not only avoid interference between the third mounting bracket 111 and the first mounting bracket 41, but also connect to different positions of the fuel tank assembly 20. In this way, the supporting positions of the fuel tank assembly 20 on the chassis 100 can be increased, and thus the structural stability of the fuel tank assembly 20 in the chassis 100 can be improved.

[0044] In the embodiment of the present invention, a cable tie is further provided around the fuel tank assembly 20. The bottom of the cable tie is connected to the bottom of the fuel tank assembly 20. The two ends of the cable tie are respectively connected to the first mounting bracket 41 and the third mounting bracket 111. In this way, the cable tie can bear part of the weight of the fuel tank assembly 20 to improve the connection reliability between the fuel tank assembly 20 and the first mounting bracket 41 and the third mounting bracket 111.

[0045] According to an embodiment of the present utility model, there are multiple third mounting brackets 111, and the multiple third mounting brackets 111 are arranged at intervals. Specifically, in the embodiment of the present utility model, the fuel tank assembly 20 extends in the front-rear direction, that is, the extending direction of the fuel tank assembly 20 is the same as the extending direction of the first longitudinal beam 11. In this way, by arranging multiple third mounting brackets 111 between the first longitudinal beam 11 and the fuel tank assembly 20, the connection positions between the fuel tank assembly 20 and the first longitudinal beam 11 can be increased, so as to improve the setting reliability of the fuel tank assembly 20 in the chassis 100. Further, the multiple third mounting brackets 111 are arranged at intervals, so that the supporting force received by the fuel tank assembly 20 is more uniform, which is beneficial to improving the overall structural strength of the fuel tank assembly 20 and can make the fuel tank assembly 20 more stable in the chassis 100.

[0046] Combined Figure 1 with Figure 2 As shown, the chassis 100 further includes a rear axle assembly 50. The rear axle assembly 50 includes a drive shaft 51 and a rear axle member. The rear axle member extends in the left-right direction, and the left and right ends of the rear axle member are adapted to be connected to the left and right rear wheels of the vehicle. The drive shaft 51 extends in the front-rear direction and is located between the two longitudinal beams 10. The rear end of the drive shaft 51 is connected to the rear axle member. The side of the fuel tank assembly 20 away from the first longitudinal beam 11 in the left-right direction is spaced from the drive shaft 51, and the second end of the connecting half beam 40 is spaced from the drive shaft 51 in the left-right direction.

[0047] Specifically, the rear axle assembly 50 in the chassis 100 can transmit power to the rear wheels of the whole vehicle to drive the rear wheels of the vehicle to rotate. In the embodiment of the present utility model, the rear axle member in the rear axle assembly 50 extends left and right to transmit the driving force on the rear axle assembly 50 to the left and right rear wheels of the vehicle, and thus can drive the left and right rear wheels of the vehicle to rotate.

[0048] Further, the drive shaft 51 extends in the front-rear direction, so that the driving force in the chassis 100 can be transmitted in the front-rear direction. The rear end of the drive shaft 51 is connected to the rear axle member, so that the power can be transmitted to the rear axle member through the drive shaft 51 and then transmitted to the left and right rear wheels of the vehicle.

[0049] In the embodiment of the present utility model, the drive shaft 51 is located between the first longitudinal beam 11 and the second longitudinal beam 12. Since the second end of the connecting half beam 40 is spaced from the second longitudinal beam 12 and the second end of the connecting half beam 40 is spaced from the drive shaft 51 in the left-right direction, the connecting half beam 40 in the present utility model will not interfere with the drive shaft 51. In this way, it can be avoided that the drive shaft 51 jumps during the transmission process and interferes with the surrounding components. Thus, the structural layout of the chassis 100 can be optimized.

[0050] Further, the fuel tank assembly 20 is spaced apart from the drive shaft 51 on the side away from the first longitudinal beam 11 in the left - right direction, so that the fuel tank assembly 20 can avoid the drive shaft 51 arranged between the first longitudinal beam 11 and the second longitudinal beam 12, preventing interference between the drive shaft 51 and the fuel tank assembly 20 when the drive shaft 51 is arranged between the two longitudinal beams 10.

[0051] Combined with Figure 1 and Figure 2 As shown, the first cross - beam 30 is spaced apart above the drive shaft 51, and the first cross - beam 30 is spaced apart from the front side of the rear axle component. Specifically, the first cross - beam 30 is located above the connecting half - beam 40 and also above the drive shaft 51, so that the first cross - beam 30 can avoid the drive shaft 51 arranged between the first longitudinal beam 11 and the second longitudinal beam 12, preventing interference between the drive shaft 51 and the first cross - beam 30 when the drive shaft 51 is arranged between the two longitudinal beams 10.

[0052] Further, the first cross - beam 30 is located on the front side of the rear axle component and is spaced apart from the rear axle component. This can not only prevent interference between the first cross - beam 30 and the rear axle component, ensure stable power transmission in the rear axle assembly 50, but also ensure that the structural strength on the front side of the rear axle component meets the layout requirements of the rear suspension of the chassis 100, thus facilitating the improvement of the structural reliability of the chassis 100.

[0053] Combined with Figure 1 and Figure 3 As shown, the chassis 100 further includes a second cross - beam 60. The second cross - beam 60 extends in the left - right direction and is connected to the two longitudinal beams 10, so that the second cross - beam 60 can overlap between the left and right longitudinal beams 10. This can not only strengthen the structural stability of the first longitudinal beam 11 and the second longitudinal beam 12 on the chassis 100, but also provide a setting position for components in the left - right direction of the chassis 100.

[0054] Further, the second cross - beam 60 is located on the front side of the first cross - beam 30 and is spaced apart from the first cross - beam 30, so that the second cross - beam 60 and the first cross - beam 30 are independent of each other, reducing stress concentration on the first longitudinal beam 11 and the second longitudinal beam 12, thus facilitating the improvement of the structural strength of the chassis 100.

[0055] The first cross - beam 30 is located behind the fuel tank assembly 20, so at least part of the second cross - beam 60 corresponds to the fuel tank assembly 20. In the embodiment of the present utility model, a relief groove 61 is provided in the part of the second cross - beam 60 corresponding to the fuel tank assembly 20, so that the part of the second cross - beam 60 corresponding to the fuel tank assembly 20 can avoid the fuel tank assembly 20. In this way, the second cross - beam 60 can be adapted to different shapes of the fuel tank assembly 20, facilitating the layout of the fuel tank assembly 20 on the chassis 100.

[0056] Furthermore, the part of the fuel tank assembly 20 corresponding to the avoidance groove 61 of the second cross beam 60 is connected, which can prevent the fuel tank assembly 20 from moving relative to the second cross beam 60, and can fix the fuel tank assembly 20 to ensure the structural reliability of the fuel tank assembly 20 on the chassis 100.

[0057] Combined Figure 1 As shown, there are multiple second cross beams 60, and the multiple second cross beams 60 are arranged at intervals in the front-rear direction. Specifically, the fuel tank assembly 20 extends in the front-rear direction. Correspondingly, in the embodiment of the present invention, multiple second cross beams 60 arranged at intervals in the front-rear direction are provided, which can increase the connection positions between the second cross beams 60 and the fuel tank assembly 20, strengthen the connection strength between the second cross beams 60 and the fuel tank assembly 20 in the front-rear direction, and further improve the structural stability of the fuel tank assembly 20 in the front-rear direction.

[0058] Furthermore, the multiple second cross beams 60 are arranged at intervals, which can not only make the supporting force received by the fuel tank assembly 20 more uniform, be beneficial to improving the overall structural strength of the fuel tank assembly 20, make the fuel tank assembly 20 more stable in the chassis 100, but also reduce the stress concentration on the outer shell of the fuel tank assembly 20, which is beneficial to improving the durability of the fuel tank assembly 20.

[0059] According to the embodiment of the present invention, the vehicle includes the chassis 100 in the embodiment of the present invention. In the chassis 100 of the present invention, a connecting half beam 40 is provided at the rear end of the fuel tank assembly 20. The second end of the connecting half beam 40 is spaced left and right from the transmission shaft 51. The first longitudinal beam 11 and the first cross beam 30 simultaneously provide support for the connecting half beam 40. This can not only shorten the connecting half beam 40 to avoid the transmission shaft 51 between the first longitudinal beam 11 and the second longitudinal beam 12, but also make the connecting half beam 40 provide reliable support for the fuel tank assembly 20, thus being beneficial to optimizing the structural layout of the chassis 100.

[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0061] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A chassis, characterized in that: include: A longitudinal beam, wherein the longitudinal beam is extended in the front-rear direction and is in two pieces, the two longitudinal beams are respectively a first longitudinal beam and a second longitudinal beam, and the first longitudinal beam and the second longitudinal beam are spaced apart in the left-right direction; A fuel tank assembly, the fuel tank assembly is disposed between the two longitudinal beams and adjacent to the first longitudinal beam, and the fuel tank assembly is connected to the first longitudinal beam; a first cross beam, the first cross beam extending in the left-right direction and connected to the two longitudinal beams respectively, the first cross beam being located above the fuel tank assembly and adjacent to the rear end of the fuel tank assembly; A connecting half beam, wherein the connecting half beam is extended in the left-right direction and is spaced apart at the front side of the first cross beam, the first end of the connecting half beam is connected to the first longitudinal beam, the second end of the connecting half beam is spaced apart from the second longitudinal beam, the first cross beam is spaced apart at the upper rear of the connecting half beam, the connecting half beam is connected to the fuel tank assembly, and the first cross beam is connected to the connecting half beam.

2. The chassis according to claim 1, characterized in that: A first mounting bracket is arranged on the connecting half beam, and the first mounting bracket is connected to the fuel tank assembly. A second mounting bracket is arranged on the first cross beam, and the second mounting bracket is connected to the connecting half beam.

3. The chassis according to claim 2, characterized in that: The second mounting bracket is provided with a fuel tank isolation valve.

4. The chassis according to claim 2, characterized in that: A third mounting bracket is arranged on the first longitudinal beam, the third mounting bracket is connected to the fuel tank assembly, and the third mounting bracket is spaced apart from the first mounting bracket.

5. The chassis according to claim 4, characterized in that: There are multiple third mounting brackets, and the multiple third mounting brackets are arranged at intervals.

6. The chassis according to claim 1, characterized in that: It also includes a rear axle assembly, which includes a transmission shaft and a rear axle member. The rear axle member is extended in the left-right direction, and the left and right ends of the rear axle member are suitable for connecting with the left and right rear wheels of the vehicle. The transmission shaft is extended in the front-back direction and is located between the two longitudinal beams. The rear end of the transmission shaft is connected to the rear axle member. The side of the fuel tank assembly in the left-right direction away from the first longitudinal beam is spaced apart from the transmission shaft, and the second end of the connecting half beam is spaced apart from the transmission shaft in the left-right direction.

7. The chassis according to claim 6, characterized in that The first cross beam is disposed above the transmission shaft at intervals, and the first cross beam is disposed at intervals on the front side of the rear bridge member.

8. The chassis according to claim 1, characterized in that: It also includes a second cross beam, which is extended in the left-right direction and connected to the two longitudinal beams. The second cross beam is arranged at intervals in front of the first cross beam. The part of the second cross beam corresponding to the fuel tank assembly is provided with an avoidance groove, and the avoidance groove avoids the fuel tank assembly. The fuel tank assembly is connected to the part of the second cross beam corresponding to the avoidance groove.

9. The chassis according to claim 8, characterized in that There are a plurality of the second cross beams, and the plurality of the second cross beams are arranged at intervals in the front-rear direction.

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

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