Vehicle body assembly and vehicle

Abstract

The application provides a vehicle body assembly and a vehicle. The vehicle body assembly comprises a chassis frame and a floor assembly. The chassis frame comprises a first part and a second part connected along a longitudinal direction of the chassis frame. The floor assembly comprises a first floor cross beam, a floor part and a second floor cross beam connected in sequence along the longitudinal direction of the chassis frame. The first floor cross beam is connected to a side of the first part away from the second part, and the second floor cross beam is connected to a side of the second part close to the first part. The floor part is connected to the first part and is closer to the ground than the second floor cross beam along a first direction intersecting the longitudinal direction of the chassis frame. The floor assembly can bear through the first floor cross beam and the second floor cross beam, and the load bearing requirement of the floor part is relatively low. Therefore, the floor part can no longer be arranged on the chassis frame, so that the height of the floor part is reduced, the height of the cab is reduced, and passengers can get on and off the vehicle more conveniently.

Description

Technical Field

[0001] This invention relates to the field of vehicle body technology, and in particular to vehicle body assemblies and vehicles. Background Technology

[0002] With increasing demand for logistics across various sectors, the number of vehicles used for logistics transportation has grown significantly in recent years. Short-distance logistics plays a dominant role in this sector, and light trucks are typically used. However, the high cab height of existing light trucks makes it inconvenient for drivers to get in and out, impacting logistics efficiency. Summary of the Invention

[0003] Therefore, it is necessary to provide a body assembly and vehicle to address the problem that the high height of the cab of existing light trucks makes it inconvenient for drivers to get in and out of the vehicle, thus affecting the efficiency of logistics transportation.

[0004] According to a first aspect of this application, a vehicle body assembly is provided. The vehicle body assembly includes:

[0005] A chassis frame, comprising a first portion and a second portion connected along the longitudinal direction of the chassis frame; and

[0006] The floor assembly includes a first floor beam, a floor section, and a second floor beam connected sequentially along the longitudinal direction of the chassis frame. The first floor beam is connected to the side of the first section away from the second section, and the second floor beam is connected to the side of the second section closer to the first section. The floor section is connected to the first section and, along a first direction intersecting the longitudinal direction of the chassis frame, is closer to the ground than the second floor beam.

[0007] In one embodiment, the vehicle assembly further includes a first mount and a second mount;

[0008] The first floor beam is connected to the first part via the first suspension, and the second floor beam is connected to the second part via the second suspension.

[0009] In one embodiment, the floor assembly further includes a seat fixing structure that protrudes from the top of the floor portion and is used for mounting a vehicle seat.

[0010] In one embodiment, the vehicle body assembly further includes a front bulkhead assembly, a rear bulkhead assembly, a left side bulkhead assembly, a right side bulkhead assembly, and a roof assembly; the floor assembly is connected to the front bulkhead assembly, the rear bulkhead assembly, the left side bulkhead assembly, and the right side bulkhead assembly, respectively;

[0011] The top cover assembly is located on the opposite side of the front bulkhead assembly relative to the floor assembly, and the top cover assembly is connected to the front bulkhead assembly, the rear bulkhead assembly, the left bulkhead assembly, and the right bulkhead assembly.

[0012] In one embodiment, the front bulkhead assembly includes a front bulkhead panel, two parallel and spaced-apart first pillar beams, and two parallel and spaced-apart front windshield crossbeams; the extension direction of the front windshield crossbeams is angled to the extension direction of the first pillar beams; each front windshield crossbeam is connected to the two first pillar beams at both ends to enclose the front windshield.

[0013] The front bulkhead is located on the side of the front windshield near the floor assembly, and the front bulkhead is connected to the two first column beams respectively.

[0014] In one embodiment, the rear assembly includes a main frame and a rear partition; the main frame is arranged in the form of a metal mesh; the rear partition is fitted onto the side of the main frame away from the front assembly.

[0015] In one embodiment, the top cover assembly includes a first annular beam, a second annular beam, and a plurality of connecting beams, wherein the openings of the first annular beam and the second annular beam are spaced apart from each other; the plurality of connecting beams are spaced apart between the first annular beam and the second annular beam, and each connecting beam is connected to the first annular beam and the second annular beam respectively.

[0016] In one embodiment, the floor portion includes a floor frame and a floor partition attached to the floor frame; the floor frame includes a first frame and a second frame whose extension directions are angled to each other and connected to each other, the first frame is connected to the first floor beam and extends along the longitudinal direction of the chassis frame; the second frame is connected to the second floor beam.

[0017] In one embodiment, the chassis frame and the floor assembly are made of aluminum.

[0018] According to a second aspect of this application, a vehicle is also provided, the vehicle comprising:

[0019] A chassis frame, comprising a first portion and a second portion connected along the longitudinal direction of the chassis frame; and

[0020] The floor assembly includes a first floor beam, a floor section, and a second floor beam connected sequentially along the longitudinal direction of the chassis frame. The first floor beam is connected to the side of the first section away from the second section, and the second floor beam is connected to the side of the second section closer to the first section. The floor section is connected to the first section and, along a first direction intersecting the longitudinal direction of the chassis frame, is closer to the ground than the second floor beam.

[0021] In the technical solution of this application, the first floor beam is connected to the side of the first part away from the second part, and the second floor beam is connected to the side of the second part close to the first part. Therefore, the floor assembly can bear the load through the first floor beam and the second floor beam, while the load-bearing requirement of the floor part located between the first floor beam and the second floor beam is less.

[0022] With reduced load-bearing requirements, the floor section no longer needs to be positioned above the chassis frame, allowing for a lower floor height and consequently, a lower cab height, facilitating passenger entry and exit. In fact, the floor section can be positioned between multiple chassis longitudinal beams, rather than above them, further reducing the cab floor height. The main body of the floor section located between the first and second floor crossbeams is positioned closer to the ground than the second section, along the first direction intersecting the chassis frame's longitudinal direction. Therefore, the floor section can be further lowered to the ground, reducing the cab height and making it easier for passengers to get on and off, thus increasing transportation efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the vehicle body assembly proposed in this application;

[0024] Figure 2 for Figure 1 Explosion diagram of the middle section;

[0025] Figure 3 for Figure 1 A structural diagram of some parts of the floor assembly;

[0026] Figure 4 for Figure 1 A schematic diagram of the mid-chassis frame.

[0027] Explanation of icon numbers:

[0028] label name label name 100 Body assembly 1 chassis frame 11 Part One 12 Part Two 2 Floor assembly 21 First floor beam 22 Second floor beam 23 Floor 231 Floor partition 232 Floor frame 2321 First skeleton 2322 Second skeleton 24 Seat fixing structure 3 Front assembly 31 First pillar beam 32 Front windshield crossbeam 33 Front panel 4 Rear assembly 41 Main framework 42 Rear partition 5 Top cover assembly 51 First ring beam 52 Second ring beam 53 Connecting beam 6 First suspension 7 Second suspension 8 Left side assembly 9 Right side assembly Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0035] With increasing demand for logistics across various sectors, the number of vehicles used for logistics transportation has grown significantly in recent years. Short-distance logistics plays a dominant role in this sector, and light trucks are typically used. However, the high cab height of existing light trucks makes it inconvenient for drivers to get in and out, impacting logistics efficiency.

[0036] The researchers in this application found that the high height of light truck cabs is due to the high height of the cab floor, which makes it difficult to lower the cab height. The cab floor assembly needs to support the weight of the entire cab, therefore it needs to be connected to the chassis to transfer the weight. This requires the floor assembly to be positioned above the chassis, making it difficult to lower the floor height.

[0037] Further research revealed that the main stress point of existing floor assemblies is in the middle, necessitating that the middle section be mounted on the chassis, resulting in a relatively high floor height. Therefore, this invention, while maintaining the basic load-bearing capacity of the middle section of the floor assembly, shifts the main stress point to the sides, thereby reducing the height of the middle section and consequently lowering the cab height, making it easier for passengers to get in and out of the vehicle.

[0038] In view of this, this application proposes a vehicle that includes a body assembly, and any vehicle that includes the body assembly is considered a vehicle under this application. Figures 1 to 4 This is a schematic diagram of a structural embodiment of the vehicle body assembly proposed in this application.

[0039] Please see Figures 1 to 3This application proposes a vehicle body assembly 100, which includes a chassis frame 1 and a floor assembly 2. The chassis frame 1 includes a first portion 11 and a second portion 12 connected along its longitudinal direction. The floor assembly 2 includes a first floor crossbeam 21, a floor section 23, and a second floor crossbeam 22 connected sequentially along the longitudinal direction of the chassis frame 1. The first floor crossbeam 21 is connected to the side of the first portion 11 away from the second portion 12, and the second floor crossbeam 22 is connected to the side of the second portion 12 closer to the first portion 11. The floor section 23 is connected to the first portion 11 and, along a first direction intersecting the longitudinal direction of the chassis frame 1, is closer to the ground than the second floor crossbeam 22.

[0040] In this application, the longitudinal direction of the chassis frame 1 is a relative direction. In practical applications, the longitudinal direction of the chassis frame 1 can be taken as the length direction of the chassis frame 1. The first direction is also a relative direction, which is the relative direction between the ground and the chassis.

[0041] In the technical solution of this application, the first floor beam 21 is connected to the side of the first part 11 away from the second part 12, and the second floor beam 22 is connected to the side of the second part 12 close to the first part 11. Therefore, the floor assembly 2 can bear the load through the first floor beam 21 and the second floor beam 22, while the load-bearing requirement of the floor part 23 located between the first floor beam 21 and the second floor beam 22 is relatively small.

[0042] With the reduced load-bearing requirements of the floor section 23, it no longer needs to be positioned above the chassis frame 1. This allows for a reduction in the height of the floor section 23, thereby lowering the cab height and facilitating passenger entry and exit. In fact, the floor section 23 can be positioned between multiple chassis longitudinal beams, rather than above them, further reducing the cab floor height. The main body of the floor section 23, located between the first floor crossbeam 21 and the second floor crossbeam 22, is positioned close to the first part 11. However, in the first direction intersecting the longitudinal direction of the chassis frame 1, the first part 11 is closer to the ground than the second part 12. Therefore, the floor section 23 can be further positioned closer to the ground, reducing the cab height and making it easier for passengers to get on and off, thus increasing transportation efficiency.

[0043] In fact, the main parts of the first part 11 and the second part 12 are both chassis longitudinal beams. Therefore, the existing floor section 23 is generally installed above the chassis longitudinal beams and connected to them. In this application, the first floor crossbeam 21 and the second floor crossbeam 22 are respectively installed on the chassis longitudinal beams and connected to them, while the floor section 23 is installed between the chassis longitudinal beams, thereby reducing the height of the floor section 23.

[0044] Please see Figure 1 and Figure 4 In some embodiments, the vehicle assembly 100 further includes a first mount 6 and a second mount 7. A first floor crossbeam 21 is connected to a first portion 11 via the first mount 6, and a second floor crossbeam 22 is connected to a second portion 12 via the second mount 7.

[0045] Vehicles inevitably experience vibrations during operation, therefore various suspension structures are required on the body assembly 100. The floor assembly 2 supports the cab, thus its stability is crucial for improving passenger comfort. A first suspension 6 is located in the first section 11, and a second suspension 7 is located in the second section 12. A first floor crossbeam 21 is connected to the first section 11 via the first suspension 6, and a second floor crossbeam 22 is connected to the second section 12 via the second suspension 7. This provides cushioning to the floor assembly 2, enhancing the stability of the vehicle cab.

[0046] Please see Figure 2 and Figure 3 In some embodiments, the floor assembly 2 also includes a seat fixing structure 24 that protrudes from the top of the floor portion 23 and is used for mounting a vehicle seat.

[0047] The vehicle's driver's compartment is equipped with a seat, which needs to be fixedly installed on the floor. To ensure a comfortable seating experience for passengers, the seat requires a certain installation height. Therefore, in this embodiment, the floor assembly 2 also includes a seat fixing structure 24, which protrudes from the top of the floor portion 23, thereby providing mounting for the seat. The seat fixing structure 24 is mounted on the floor assembly 23, thus improving the seating experience for passengers.

[0048] Furthermore, there are many specific implementations of the seat fixing structure 24. For example, it can be set as a support seat or as an upwardly protruding metal frame, thereby providing an installation position for the seat.

[0049] Please see Figure 1 and Figure 2 In some embodiments, the vehicle body assembly 100 further includes a front bulkhead assembly 3, a rear bulkhead assembly 4, a left side bulkhead assembly 8, a right side bulkhead assembly 9, and a roof assembly 5. The floor assembly 2 is connected to the front bulkhead assembly 3, the rear bulkhead assembly 4, the left side bulkhead assembly 8, and the right side bulkhead assembly 9, respectively. The roof assembly 5 is located on the opposite side of the front bulkhead assembly 3 relative to the floor assembly 2, and the roof assembly 5 is connected to the front bulkhead assembly 3, the rear bulkhead assembly 4, the left side bulkhead assembly 8, and the right side bulkhead assembly 9, respectively.

[0050] In practical applications, the structures of commercial vehicles and passenger vehicles differ significantly. Passenger vehicles have a unibody structure, while commercial vehicles have a separate chassis and cab structure, with the cab mounted on the chassis assembly. In this embodiment, the body assembly 100 also includes a front bulkhead assembly 3, a rear bulkhead assembly 4, a left side bulkhead assembly 8, a right side bulkhead assembly 9, and a roof assembly 5. The floor assembly 2 is connected to the front bulkhead assembly 3, the rear bulkhead assembly 4, the left side bulkhead assembly 8, and the right side bulkhead assembly 9, respectively. The roof assembly 5 is located on the opposite side of the front bulkhead assembly 3, opposite the floor assembly 2, and is connected to the front bulkhead assembly 3, the rear bulkhead assembly 4, the left side bulkhead assembly 8, and the right side bulkhead assembly 9, thus forming the cab assembly.

[0051] The cab assembly is connected to the chassis assembly via the floor assembly 2, allowing the cab assembly to be mounted on the chassis assembly and together with the chassis assembly to form the body assembly 100. It should be noted that there are many ways to implement the cab assembly, and it is not limited to consisting of the front bulkhead assembly 3, rear bulkhead assembly 4, left side bulkhead assembly 8, right side bulkhead assembly 9, and roof assembly 5. The specific structure can be adjusted according to usage requirements, and no specific limitations are made here.

[0052] In some embodiments, the front bulkhead assembly 3 includes a front bulkhead panel 33, two parallel and spaced-apart first pillar beams 31, and two parallel and spaced-apart front windshield crossbeams 32. The extending direction of the front windshield crossbeams 32 is angled to the extending direction of the first pillar beams 31. Each front windshield crossbeam 32 is connected to the two first pillar beams 31 at both ends to enclose the front windshield. The front bulkhead panel 33 is located on the side of the front windshield closest to the floor assembly 2, and the front bulkhead panel 33 is connected to the two first pillar beams 31 respectively.

[0053] The front bulkhead assembly 3 forms the front end of the cab, and it also encloses the front window for the installation of the windshield. In this embodiment, the front bulkhead assembly 3 includes a front bulkhead panel 33, two parallel and spaced-apart first pillar beams 31, and two parallel and spaced-apart windshield crossbeams 32. The two windshield crossbeams 32 and the two first pillar beams 31 together enclose the front window, thereby installing the windshield.

[0054] Furthermore, the two ends of the upper windshield crossbeam 32 are connected to one end of each of the two first pillar beams 31, while the two ends of the lower windshield crossbeam 32 are connected to the lower portions of each of the two first pillar beams 31. The front bulkhead closure 33 is positioned opposite the upper windshield crossbeam 32 on the other side of the lower windshield crossbeam 32, and is connected to both the two first pillar beams 31 and the lower windshield crossbeam 32. The two windshield crossbeams 32 and the two first pillar beams 31 together enclose the front window, while the front bulkhead closure 33 seals off other gaps, making the front bulkhead more enclosed and better meeting the actual usage needs of the vehicle.

[0055] In some embodiments, the rear enclosure assembly 4 includes a main frame 41 and a rear partition 42. The main frame 41 is arranged in the form of a metal mesh, and the rear partition 42 is attached to the side of the main frame 41 away from the front enclosure assembly 3.

[0056] In commercial vehicles, the rear assembly 4 needs to separate the cab from the cargo compartment. Therefore, in this embodiment, the rear assembly 4 includes a main frame 41 and a rear partition 42. The main frame 41 can be connected to the roof assembly 5 and the floor assembly 2 respectively, thereby increasing the stability of the structure. The rear partition 42 is fitted onto the side of the main frame 41 away from the front assembly 3, thereby separating the cargo compartment and the cab, thus ensuring that the cab's user experience is not affected by the cargo compartment.

[0057] In some embodiments, the top cover assembly 5 includes a first annular beam 51, a second annular beam 52, and a plurality of connecting beams 53, wherein the openings of the first annular beam 51 and the openings of the second annular beam 52 are spaced apart from each other. The plurality of connecting beams 53 are spaced apart between the first annular beam 51 and the second annular beam 52, and each connecting beam 53 is connected to the first annular beam 51 and the second annular beam 52 respectively.

[0058] In practical applications, the roof assembly 5 is positioned on top of the cab relative to the floor assembly 2. The roof assembly 5 has lower load-bearing requirements, allowing for a lighter structure. Therefore, in this embodiment, the roof assembly 5 includes a first annular beam 51, a second annular beam 52, and multiple connecting beams 53. The two first annular beams 51 are positioned opposite each other, and the multiple connecting beams 53 connect the two first annular beams 51 respectively, thus forming the roof's frame. The frame structure composed of the two first annular beams 51 and the multiple connecting beams 53 is relatively lightweight, reducing the vehicle's weight.

[0059] Please see Figure 2 and Figure 3 In some embodiments, the floor portion 23 includes a floor frame 232 and a floor partition 231 attached to the floor frame 232. The floor frame 232 includes a first frame 2321 and a second frame 2322 that are angled to each other and connected to each other in their extending directions. The first frame 2321 is connected to a first floor beam 21 and extends along the longitudinal direction of the chassis frame 1. The second frame 2322 is connected to a second floor beam 22.

[0060] In this embodiment, the floor partition 231 separates the floor frame 232 from the driver's cab, thus facilitating the cab's layout. The floor frame 232 includes a first frame 2321 and a second frame 2322. The first frame 2321 is positioned opposite to the main space of the driver's cab, and its extension direction is actually the same as the first part 11. The first frame 2321 is located between two adjacent floor longitudinal beams in the first part 11, allowing for a further reduction in the height of the first frame 2321, thereby lowering the height of the driver's cab. The second frame 2322 is connected to both the first frame 2321 and the second floor crossbeam 22, making the structure of the floor frame 232 more stable.

[0061] The segmented design of the floor frame 232 allows for a reduction in the height of the first frame 2321, which is opposite to the main space of the cab, thereby lowering the cab height. Furthermore, the stability of the floor assembly 2 is ensured by the first floor crossbeam 21 and the second floor crossbeam 22. The specific structure of the floor partition 231 corresponds to the floor frame 232 and can be adjusted according to actual conditions; no specific limitations are specified here.

[0062] In this application, the chassis frame 1 and floor assembly 2 are made of aluminum. All components of the cab assembly in the body assembly 100 are made of aluminum; it's not that only the chassis frame 1 and floor assembly 2 are made of aluminum. Of course, the specific materials used can be adjusted according to usage requirements. Using aluminum as the manufacturing material reduces the weight of the cab, thus lowering the overall body weight and optimizing vehicle performance.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A vehicle body assembly, characterized by, The vehicle body assembly comprises: a chassis frame comprising a first part and a second part connected along a longitudinal direction of the chassis frame; a floor assembly comprising a first floor crossbeam, a floor part and a second floor crossbeam connected in sequence along the longitudinal direction of the chassis frame, the first floor crossbeam being connected to a side of the first part away from the second part, the second floor crossbeam being connected to a side of the second part close to the first part; the floor part being connected to the first part and being closer to the ground than the second floor crossbeam along a first direction intersecting the longitudinal direction of the chassis frame; the floor part comprising a floor framework comprising a first framework and a second framework arranged at an angle to each other and connected to each other, the first framework being connected to the first floor crossbeam and extending along the longitudinal direction of the chassis frame, the second framework being connected to the second floor crossbeam; the floor part being arranged between chassis longitudinal beams, a main body of the floor part between the first floor crossbeam and the second floor crossbeam being arranged close to the first part; the first floor crossbeam and the second floor crossbeam being arranged on the chassis longitudinal beams respectively and connected to the chassis longitudinal beams, the floor part being arranged between the chassis longitudinal beams so that the height of the floor part is reduced; the floor part further comprising a floor partition plate arranged on the floor framework; a first suspension and a second suspension; the first floor crossbeam being connected to the first part through the first suspension, the second floor crossbeam being connected to the second part through the second suspension; the vehicle body assembly further comprising a front wall assembly, a rear wall assembly, a left side wall assembly, a right side wall assembly and a roof assembly; the floor assembly being connected to the front wall assembly, the rear wall assembly, the left side wall assembly and the right side wall assembly respectively; the roof assembly being arranged on the other side of the front wall assembly relative to the floor assembly and being connected to the front wall assembly, the rear wall assembly, the left side wall assembly and the right side wall assembly respectively; the roof assembly comprising a first ring-shaped beam, a second ring-shaped beam and a plurality of connecting beams, the mouth of the first ring-shaped beam and the mouth of the second ring-shaped beam being arranged at a relative interval; the plurality of connecting beams being arranged at an interval between the first ring-shaped beam and the second ring-shaped beam and each being connected to the first ring-shaped beam and the second ring-shaped beam. The floor assembly further comprises a seat fixing structure protruding from the top of the floor part, the seat fixing structure being used for mounting a vehicle seat.

2. The vehicle body assembly of claim 1, wherein, The front wall assembly comprises a front wall cover plate, two first column beams arranged in parallel at an interval and two front windshield crossbeams arranged in parallel at an interval; the extension direction of the front windshield crossbeams being arranged at an angle to the extension direction of the first column beams; both ends of each front windshield crossbeam being connected to two first column beams respectively to enclose a front windshield; 3. The body assembly of claim 1, wherein, the front wall cover plate being arranged on a side of the front windshield close to the floor assembly and being connected to two first column beams respectively. ​ 4. The body assembly of claim 1, wherein, The rear wall assembly comprises a main frame and a rear wall partition plate; the main frame is arranged in a metal grid; the rear wall partition plate is attached to the side of the main frame away from the front wall assembly.

5. The body assembly of claim 1, wherein, The chassis frame and the floor assembly are made of aluminum.

6. A vehicle characterized by comprising: The vehicle comprises the vehicle body assembly according to any one of claims 1 to 5.

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