Side wall with built-in side column and vehicle

Abstract

According to the side wall with the built-in side column and the vehicle provided by the utility model, the mounting positions of the wall body and the side column are changed, so that the volume and the load of the vehicle can be further improved. The side wall with the built-in side columns comprises two wall bodies extending in the height direction, and the two wall bodies are oppositely arranged; the bottom ends of the wall bodies are fixed to the bottom frame lower side beams on the corresponding sides, the top ends of the wall bodies are fixedly connected with top longitudinal beams, a plurality of side columns extending in the height direction are further fixedly arranged on the inner walls of the wall bodies, and the bottom ends of the side columns are used for being fixedly connected to the bottom frame lower side beams. The top ends of the side columns are used for being directly or indirectly connected to a top longitudinal beam. By the adoption of the implementation mode, the side columns are arranged on the inner walls of the walls, the outer walls of the walls serve as limits in the width direction of the vehicle, and therefore the volume and the bearing capacity of the vehicle are increased under the condition that the limit requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of railway vehicles, and particularly to a side wall with side columns built therein and a vehicle. Background Art

[0002] In the field of material (such as coal, ore, etc.) transportation, as an important transportation tool, the design of an open wagon directly affects the transportation efficiency and economic benefits. In the existing open wagons, the side wall of the open wagon includes a wall body and side columns connected to the wall body; however, in the existing open wagons, the side columns are located outside the wall body, and such a setting method wastes the vehicle gauge space in the width direction of the open wagon, restricting the further expansion of the volume and load-bearing capacity of the open wagon. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a side wall with side columns built therein and a vehicle, by changing the installation positions of the wall body and the side columns, so as to further improve the volume and load of the vehicle.

[0004] To achieve the above purpose, the utility model provides a side wall with side columns built therein and a vehicle. The side wall with side columns built therein includes two wall bodies extending in the height direction, and the two wall bodies are arranged opposite to each other; the bottom end of the wall body is fixed to the lower side beam of the corresponding side of the underframe, the top end of each wall body is fixedly connected with a top longitudinal beam, several side columns extending in the height direction are also fixedly arranged on the inner wall of the wall body, the bottom end of the side column is used for fixedly connecting to the lower side beam of the underframe, and the top end of the side column is used for directly or indirectly connecting to the top longitudinal beam.

[0005] By adopting the implementation manner in the present application, the side columns are arranged on the inner wall of the wall body, so that the outer wall of the wall body serves as the gauge in the width direction of the vehicle, thereby increasing the volume and load-bearing capacity of the vehicle while ensuring the gauge requirements.

[0006] Optionally, the wall body has a body section and a retracted section distributed in the height direction, the retracted section is located above the body section and is arranged at an obtuse angle with the body section; one end of the two retracted sections is connected to the corresponding body section, and the other end extends towards the direction of approaching each other. By setting the retracted section and arranging the retracted section at an obtuse angle with the body section, it can be ensured that when the vehicle is flipped for unloading operations, bulk goods such as coal are completely unloaded from the wall body without accumulation.

[0007] Optionally, the outer wall of the retracted section is used for fixing the top longitudinal beam; the inner wall of the retracted section abuts against the top ends of the side columns. In this way, the top ends of the side columns are indirectly connected to the top longitudinal beam through the retracted section, and such a connection method does not damage the wall body and ensures the strength of the wall body.

[0008] Optionally, it further includes a plurality of transition columns, each of the transition columns extending in the vertical direction, with the top end of the transition column abutting against the top longitudinal beam and the bottom end abutting against the outer wall of the retracted section;

[0009] The positions where each of the transition columns abuts against the retracted section correspond one-to-one in the height direction to at least some of the positions where the side columns abut against the retracted section. Thus, the side columns can be indirectly fixed to the top longitudinal beam through the corresponding transition columns, thereby increasing the connection strength between the side columns and the top longitudinal beam.

[0010] Optionally, the retracted section includes a sloped sub-section and a vertical sub-section connected to each other, with the sloped sub-section being connected in the height direction between the vertical sub-section and the body section;

[0011] The positions where the top ends of each of the side columns abut against the retracted section are located on the inner wall of the sloped sub-section, and the positions where the bottom ends of each of the transition columns abut against the retracted section are located on the outer wall of the sloped sub-section.

[0012] Optionally, the side surfaces of each of the transition columns are spaced from the outer wall of the vertical sub-section; or, the side surfaces of each of the transition columns are in contact with the outer wall of the vertical sub-section.

[0013] A vehicle, which includes the aforementioned side-column built-in side wall, with two such side walls arranged opposite to each other in the width direction of the vehicle, and each of the underframe lower side beams and the top longitudinal beam extending in the length direction of the vehicle; the vehicle has a receiving cavity for accommodating materials, and the inner wall of the side wall serves as part of the cavity wall of the receiving cavity. By adopting the implementation mode in the present application, the side columns are arranged on the inner wall of the side wall, so that the outer wall of the side wall serves as the limit in the width direction of the vehicle, thereby increasing the volume and load-bearing capacity of the vehicle while ensuring the limit requirements.

[0014] Optionally, the bottom end of the side column is fixed to the upper surface of the underframe lower side beam; or, the vehicle further includes an underframe lower cross beam connected between two of the underframe lower side beams, and part of the bottom end of at least one of the side columns is fixed to the upper surface of the underframe lower cross beam and part is fixed to the upper surface of the underframe lower side beam. By welding the bottom end of the side column to the upper surface of the underframe lower side beam, it can be ensured that the extension direction of the weld between the bottom end of the side column and the upper surface of the underframe lower side beam is consistent with the direction of the lateral thrust received by the side column, thereby avoiding the occurrence of weld fatigue and increasing the structural reliability of the side wall; by fixing the bottom end of the side column to the upper surface of the underframe lower cross beam, the stress transfer between the side column and the underframe lower cross beam can be further increased.

[0015] Optionally, the lower side beam of the chassis is a U-shaped beam. The U-shaped beam has two side walls and a connecting wall connected between the two side walls. The two side walls extend in the horizontal direction and are distributed up and down in the height direction. The upper surface of the upper side wall is welded to the bottom end of each side column. By providing the U-shaped beam, the weight of the lower side beam of the chassis can be effectively reduced, and at the same time, the connection strength between the side column and the lower side beam of the chassis can be improved.

[0016] Optionally, it further includes gusset plates. The gusset plates extend along the length direction of the vehicle. In the height direction, one end of the gusset plate is welded to the connecting wall, and the other end is welded to the inner wall of the wall to enclose an angular cavity.

[0017] The gusset plate is provided with through holes, which correspond to the side columns one by one. Part of the side column is located in the angular cavity, and part extends out of the angular cavity through the through hole; or,

[0018] The gusset plate has several plate segments. At least one side column is located between two adjacent plate segments, and the side surface of the side column is fixedly connected to the corresponding plate segment. The side surface of the side column constitutes part of the cavity wall of the angular cavity.

[0019] In this way, it is possible to prevent materials from accumulating at the position where the bottom end of the side column is connected to the lower side beam of the chassis.

[0020] Through the following detailed description of the exemplary embodiments of the present specification with reference to the accompanying drawings, other features and advantages of the present specification will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present specification and, together with the description, are used to explain the principles of the present specification.

[0022] Figure 1 is a partial structural axonometric view of the vehicle in an embodiment of the present invention;

[0023] Figure 2 is Figure 1 the outer axonometric view of the wall of the middle side wall;

[0024] Figure 3 is Figure 1 the outer front view of the wall of the middle side wall;

[0025] Figure 4 is Figure 2 and Figure 3 the side sectional view of the wall in the height direction in;

[0026] Figure 5 is Figure 1 the inner axonometric view of the wall of the middle side wall;

[0027] Figure 6 is Figure 1 a partial enlarged view of

[0028] Reference numerals:

[0029] 1 - end wall; 2 - side wall; 21 - wall body; 211 - main body section; 212 - retracted section; 212a - inclined sub - section; 212b - vertical sub - section; 21a - inner wall; 21b - outer wall; 22 - top longitudinal beam; 23 - side post; 231 - type - I post; 232 - type - II post; 24 - transition post; 25 - gusset plate; 25a - angular cavity; 3 - underframe lower side beam; 31 - side wall; 32 - connecting wall; 33 - opening; 31a - flange; 4 - underframe lower cross beam; 5 - center beam; 6 - accommodation cavity; 7 - wear plate. Detailed implementation manners

[0030] The present utility model provides a side - post - built - in side wall and a vehicle. By changing the installation positions of the wall body and the side post, the volume and load - carrying capacity of the vehicle can be further improved.

[0031] In order to enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific implementation manners.

[0032] Relative terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any actual relationship or order between these components.

[0033] Please refer to Figures 1 to 6 , Figure 1 which is an axonometric view of a partial structure of the vehicle in an embodiment of the present utility model; Figure 2 is Figure 1 the outer axonometric view of the wall body 21 of the side wall 2 in Figure 3 is Figure 1 the outer front - side view of the wall body 21 of the side wall 2 in Figure 4 is Figure 2 and Figure 3 the side sectional view of the wall body 21 in the height direction in Figure 5 is Figure 1 the inner axonometric view of the wall body 21 of the side wall 2 in Figure 6 is Figure 1 a partial enlarged view of

[0034] As shown in the figure, the present utility model provides a side wall 2 with side columns 23 built therein and a vehicle. The vehicle includes two end walls 1. The side wall 2 with side columns 23 built therein includes two walls 21 extending in the height direction, and the two walls 21 are arranged opposite to each other; the arrangement direction of the two walls 21 is the width direction of the vehicle, the two end walls 1 extend along the length direction of the vehicle, and the end walls 1 and the walls 21 of the side wall 2 are connected end to end in sequence to enclose a receiving cavity 6.

[0035] The bottom ends of the walls 21 are fixed to the lower side beams 3 of the corresponding side of the underframe. The vehicle has two lower side beams 3 of the underframe, and the two lower side beams 3 of the underframe extend along the length direction of the vehicle, are arranged along the width direction, and are located at the bottom of the vehicle, and are connected to the center beam 5 through the lower cross beams 4 of the underframe. The top ends of the respective walls 21 are fixedly connected with top longitudinal beams 22. The top longitudinal beams 22 are welded to the walls 21, and the top longitudinal beams 22 also extend along the length direction.

[0036] A number of side columns 23 extending in the height direction are also fixedly provided on the inner walls 21a of the walls 21. The inner walls 21a of the walls 21 form part of the cavity wall of the receiving cavity 6. The bottom ends of the side columns 23 are used for fixedly connecting to the lower side beams 3 of the underframe, and the top ends of the side columns 23 are used for directly or indirectly connecting to the top longitudinal beams 22. Among them, the side columns 23 are of a channel structure, or can be of other structures, and the top side beams are of a box structure. A number of wear plates 7 are also provided on the outer walls 21b of the walls 21 to be adapted to the dumper for unloading to avoid abrasion of the walls 21.

[0037] By adopting the implementation mode in the present application, the side columns 23 are arranged on the inner walls 21a of the walls 21, so that the outer walls 21b of the walls 21 serve as the gauge in the width direction of the vehicle, thereby increasing the volume and load-carrying capacity of the vehicle while ensuring the gauge requirements.

[0038] In a specific embodiment, the wall 21 has a main body section 211 and a retracted section 212 distributed along the height direction. The retracted section 212 is located above the main body section 211. The retracted section 212 retracts along the side of the main body section 211 close to the center of the accommodation cavity 6. One end of the two retracted sections 212 is connected to the corresponding main body section 211, and the other end extends towards the direction of approaching each other; the retracted section 212 is arranged at an obtuse angle with the main body section 211, which refers to the angle at the position where the retracted section 212 is connected to the main body section 211. This connected position is located on the side where the accommodation cavity 6 is located, that is, the angle formed between the inner wall of the retracted section 212 and the inner wall of the main body section 211. Specifically, this angle can be greater than the angle of repose of the material. When the material is coal, this angle needs to be greater than the angle of repose of coal. The angle of repose refers to the maximum acute angle formed between the inclined surface of the pile surface and the ground when loose materials (such as coal) freely pile up. By setting the retracted section 212 and arranging the retracted section 212 at an obtuse angle with the main body section 211, it can be ensured that when the vehicle is flipped for unloading operations, bulk goods such as coal can be completely unloaded from the wall 21 without accumulation.

[0039] In this embodiment, the outer wall of the retracted section 212 is used to fix the top longitudinal beam 22; the top longitudinal beam 22 is welded to the outer wall of the retracted section 212, and the inner wall of the retracted section 212 abuts against the top ends of the side columns 23. In this way, the top ends of the side columns 23 are indirectly connected to the top longitudinal beam 22 through the retracted section 212. This connection method does not need to damage the wall 21 and ensures the strength of the wall 21.

[0040] In an alternative embodiment, the side wall 2 further includes a plurality of transition columns 24. Each transition column 24 extends in the vertical direction. The top end of the transition column 24 abuts against the top longitudinal beam 22, and the bottom end abuts against the outer wall of the retracted section 212; the top end and the top of the transition section are respectively welded to the lower surface of the top longitudinal beam 22 and the outer wall of the retracted section 212. The positions where each transition column 24 abuts against the retracted section 212 correspond one by one in the height direction to at least part of the positions where the side columns 23 abut against the retracted section 212. The position where the bottom end of the transition column 24 is welded to the outer wall of the retracted section 212 forms a first welding area, and the position where the top end of the side column 23 is welded to the inner wall of the retracted section 212 forms a second welding area. The first welding area and the second welding area are located on both sides of the retracted section 212 in the height direction, and the projection ranges of the first welding area and the second welding area in the height direction partially overlap or completely overlap. Thus, the side column 23 can be indirectly fixed to the top longitudinal beam 22 through its corresponding transition column 24, thereby increasing the connection strength between the side column 23 and the top longitudinal beam 22.

[0041] The side column 23 and the corresponding transition column 24 both extend in the vertical direction. The stress received by the side column 23 can be transmitted to the top longitudinal beam 22 through the transition column 24, and the stress received by the transition column 24 can be transmitted to the lower side beam 3 of the underframe through the side column 23. In this way, the structural strength of the vehicle side wall 2 is ensured under the cooperation of the side column 23 and the transition column 24.

[0042] In a specific embodiment, the retracted section 212 includes an inclined sub-section 212a and a vertical sub-section 212b connected to each other. The inclined sub-section 212a is connected between the vertical sub-section 212b and the body section 211 in the height direction; the inclined sub-section 212a is connected between the body section 211 and the vertical sub-section 212b in the height direction. In the example shown in the figure, both the body section 211 and the vertical sub-section 212b extend in the vertical direction, and the planes where they are located are parallel to each other. There is a certain distance between the planes where the body section 211 and the vertical sub-section 212b on the same side are located. The vertical sub-section 212b is closer to the central side of the accommodation cavity 6 than the body section 211. The inclination angle of the inclined sub-section 212a depends on the size of the distance between the vertical sub-section 212b and the body section 211, which can be selected by those skilled in the art. The top longitudinal beam 22 is welded to the outer wall of the vertical sub-section 212b. By providing the vertical sub-section 212b, it is convenient to weld the top longitudinal beam 22 and ensure the welding strength of the top longitudinal beam 22.

[0043] The position where the top end of each side column 23 abuts against the retracted section 212 is located on the inner wall of the inclined sub-section 212a, and the position where the bottom end of each transition column 24 abuts against the retracted section 212 is located on the outer wall of the inclined sub-section 212a. That is to say, the first welding area is located on the outer wall of the inclined sub-section 212a, and the second welding area is located on the inner wall of the inclined sub-section 212a.

[0044] In an alternative embodiment, the side surface of each transition column 24 is spaced from the outer wall of the vertical sub-section 212b; or, the side surface of each transition column 24 is in contact with the outer wall of the vertical sub-section 212b. The way of being in contact can further strengthen the structure of the vertical sub-section 212b.

[0045] In another aspect of the present application, a vehicle is further provided. The vehicle includes the side column 23 built-in side wall 2 described above. By adopting the embodiments in the present application, the side column 23 is arranged on the inner wall 21a of the wall body 21. In this way, the outer wall 21b of the wall body 21 serves as the limit in the vehicle width direction, so that the volume and load capacity of the vehicle are increased while meeting the limit requirements.

[0046] In a specific embodiment, the bottom end of the side column 23 is fixed to the upper surface of the lower side beam 3 of the underframe; the projection range formed by projecting the bottom end of the side column 23 in the height direction is within the projection range of the upper surface of the lower side beam 3 of the underframe. That is, in the width direction of the vehicle, part of the side column 23 is a first type of column 231, and the size of the bottom end of the first type of column 231 is smaller than or equal to the size of the upper surface of the lower side beam 3 of the underframe. In the length direction, the size of the first type of column 231 in the length direction can be adjusted according to the position where each first type of column 231 is located. Those skilled in the art can adjust it according to the actual use environment of the vehicle. By welding the bottom end of the first type of column 231 to the upper surface of the lower side beam 3 of the underframe, it can be ensured that the extension direction of the weld between the bottom end of the first type of column 231 and the upper surface of the lower side beam 3 is consistent with the direction of the lateral thrust received by the first type of column 231, thereby avoiding the occurrence of weld fatigue and increasing the structural reliability of the side wall 2.

[0047] Optionally, the vehicle further includes an underframe lower cross beam 4. The underframe lower cross beam 4 is connected between two underframe lower side beams 3. At least one side column 23 is a second type of column 232. Part of the bottom end of the second type of column 232 is fixed to the upper surface of the underframe lower cross beam 4, and part is fixed to the upper surface of the underframe lower side beam 3. By fixing the bottom end of the second type of column 232 to the upper surface of the underframe lower cross beam 4, the stress transfer between the second type of column 232 and the underframe lower cross beam 4 can be further increased.

[0048] Next, a specific example is used to illustrate the structure of the underframe lower side beam 3 in the present application for support. In addition to the structure of the underframe lower side beam 3 in this embodiment, other forms of the structure of the underframe lower side beam 3, such as a box structure, etc., can also achieve the technical effects of the present application. Therefore, this embodiment is not specifically limited, but is used as a preferred solution.

[0049] In this embodiment, the underframe lower side beam 3 is a U-shaped beam. The U-shaped beam has two side walls 31 and a connecting wall 32 connecting between the two side walls 31. The two side walls 31 extend in the horizontal direction and are distributed up and down in the height direction; the upper surface of the upper side wall 31 is welded to the bottom end of each side column 23. Both underframe lower side beams 3 have an opening 33. The opening 33 and the connecting wall 32 are arranged opposite to each other in the width direction of the vehicle; at least one of the two side walls 31 forms a flanging 31a. The flanging 31a extends in the height direction and covers a part of the opening 33; the flanging 31a is used for welding with the wall body 21. It can be the upper side wall 31 that forms the flanging 31a. The flanging 31a extends downward for a certain length and covers part of the opening 33. The wall body 21 is welded to the outer side wall 31 of the flanging 31a away from the connecting wall 32. By setting the U-shaped beam, the weight of the underframe lower side beam 3 can be effectively reduced, and at the same time, the connection strength between the side column 23 and the underframe lower side beam 3 can be improved.

[0050] In an alternative embodiment, the vehicle further includes a gusset plate 25 that extends along the length direction of the vehicle. In the height direction, one end of the gusset plate 25 is welded to the connecting wall 32, and the other end is welded to the inner wall 21a of the wall body 21 to enclose an angular cavity 25a. The gusset plate 25 is provided with through holes that correspond to the side posts 23 one by one. A part of the side post 23 is located inside the angular cavity 25a, and a part extends out of the angular cavity 25a through the through holes. Alternatively, the gusset plate 25 has several plate segments, and at least one side post 23 is located between two adjacent plate segments. The side surface of the side post 23 is fixedly connected to the corresponding plate segment, and the side surface of the side post 23 forms part of the cavity wall of the angular cavity 25a.

[0051] In this way, it is possible to prevent materials from accumulating at the position where the bottom end of the side post 23 is connected to the lower side beam 3 of the underframe.

[0052] By adopting the side post 23 built-in side wall 2 and the vehicle in the present application, the following advantages are achieved:

[0053] First, due to vehicle gauge restrictions and infrastructure constraints, it is impossible to increase the vehicle volume and improve the vehicle load capacity by adjusting the external dimensions of the vehicle such as length, width, and height. By adopting the side post 23 built-in side wall 2 structure, without changing the external dimensions of the vehicle, the vehicle gauge space is fully utilized, the vehicle volume is expanded, the vehicle load capacity is increased, and the comprehensive transportation benefit is further improved.

[0054] Specifically, by adopting the side post 23 built-in side wall 2 structure, without changing the external dimensions of the vehicle, the vehicle gauge space is fully utilized, and the vehicle volume is expanded by approximately 5 m 3 , the vehicle load capacity can be increased by 4 tons, and the freight volume of a 10,000-ton formation train can be increased by 300 tons, significantly improving the transportation capacity.

[0055] Second, in the existing side post 23 external side wall 2 structure, the side post 23 is welded to the side surface of the lower side beam 3 of the underframe, and the weld seam bears tensile stress, which is prone to weld seam fatigue and affects the structural safety and reliability. By adopting the side post 23 built-in side wall 2 structure, the side post 23 is welded to the upper surfaces of the lower side beam 3 and the lower cross beam 4 of the underframe, and the stress of the weld seam structure is reasonable, improving the structural safety and reliability.

[0056] Third, the wall panel is bent inward to form a retracted section 212, and the angle between the inner wall of the retracted section 212 and the inner wall of the body section 211 is greater than the angle of repose of coal, ensuring that bulk goods such as coal are completely unloaded without accumulation during the dumper unloading operation.

[0057] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A side wall with built-in side columns, characterized in that, It includes two walls (21) extending in the height direction, and the two walls (21) are arranged opposite to each other; the bottom ends of the walls (21) are fixed to the lower side beams (3) of the corresponding side of the chassis, the top ends of the walls (21) are fixedly connected with top longitudinal beams (22), and a plurality of side columns (23) extending in the height direction are also fixedly arranged on the inner walls (21a) of the walls (21). The bottom ends of the side columns (23) are used to be fixed to the lower side beams (3) of the chassis, and the top ends of the side columns (23) are used to be directly or indirectly connected to the top longitudinal beams (22).

2. The side wall with built-in side posts according to claim 1, characterized in that, The wall (21) has a body section (211) and a retracted section (212) distributed in the height direction. One ends of the two retracted sections (212) are connected to the corresponding body sections (211), and the other ends extend towards the direction of approaching each other.

3. The side wall with built-in side posts according to claim 2, characterized in that, The outer walls of the retracted sections (212) are used to fix the top longitudinal beams (22); the inner walls of the retracted sections (212) are in contact with the top ends of the side columns (23).

4. The side wall with built-in side columns according to claim 3, characterized in that, It further includes a plurality of transition columns (24). Each of the transition columns (24) extends in the vertical direction. The top ends of the transition columns (24) are in contact with the top longitudinal beams (22), and the bottom ends are in contact with the outer walls of the retracted sections (212). The positions where each of the transition columns (24) is in contact with the retracted section (212) correspond one by one in the height direction to at least part of the positions where the side columns (23) are in contact with the retracted section (212).

5. The side wall with built-in side columns according to claim 4, characterized in that, The retracted section (212) includes an inclined surface sub-section (212a) and a vertical sub-section (212b) connected to each other. The inclined surface sub-section (212a) is connected in the height direction between the vertical sub-section (212b) and the body section (211). The positions where the top ends of the side columns (23) are in contact with the retracted section (212) are located on the inner walls of the inclined surface sub-section (212a), and the positions where the bottom ends of the transition columns (24) are in contact with the retracted section (212) are located on the outer walls of the inclined surface sub-section (212a).

6. The side wall with built-in side columns according to claim 5, characterized in that The side surfaces of each of the transition columns (24) are spaced from the outer walls of the vertical sub-section (212b); or, the side surfaces of each of the transition columns (24) are in contact with the outer walls of the vertical sub-section (212b).

7. A vehicle, characterized in that, It includes the side column built-in side wall according to any one of claims 1-6. The two walls (21) are arranged opposite to each other along the width direction of the vehicle, and each of the lower side beams (3) of the chassis and the top longitudinal beams (22) extend along the length direction of the vehicle. The vehicle has a receiving cavity (6) for receiving materials, and the inner wall (21a) of the wall (21) serves as part of the cavity wall of the receiving cavity (6).

8. The vehicle according to claim 7, characterized in that, The bottom ends of the side columns (23) are fixed to the upper surfaces of the lower side beams (3) of the chassis; or, The vehicle further includes a lower cross beam (4) of the chassis. The lower cross beam (4) of the chassis is connected between the two lower side beams (3) of the chassis. Part of the bottom ends of at least one side column (23) is fixed to the upper surface of the lower cross beam (4) of the chassis, and part is fixed to the upper surface of the lower side beam (3) of the chassis.

9. The vehicle according to claim 8, wherein, The lower side beam (3) of the chassis is a U-shaped beam. The U-shaped beam has two side walls (31) and a connecting wall (32) connected between the two side walls (31). The two side walls (31) extend in the horizontal direction and are distributed up and down in the height direction. The upper surface of the upper side wall (31) is welded to the bottom end of each side column (23).

10. The vehicle according to claim 9, characterized in that, It further includes an angle plate (25). The angle plate (25) extends along the length direction of the vehicle. In the height direction, one end of the angle plate (25) is welded to the connecting wall (32), and the other end is welded to the inner wall (21a) of the wall body (21) to form an angular cavity (25a). The angle plate (25) is provided with a through hole corresponding to the side column (23). Part of the side column (23) is located inside the angular cavity (25a), and part extends out of the angular cavity (25a) through the through hole; or The angle plate (25) has several plate segments. At least one side column (23) is located between two adjacent plate segments. The side surface of the side column (23) is fixedly connected to the corresponding plate segment, and the side surface of the side column (23) forms part of the cavity wall of the angular cavity (25a).

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