Sidewall, train body and train

Abstract

Embodiments of the present application provide a sidewall, a train body and a train. The sidewall is composed of a sidewall upper beam, a first sidewall and a second sidewall; the first sidewall and the second sidewall are located at two longitudinal ends of the sidewall upper beam, respectively; the first sidewall comprises a window head sidewall, a first window sill sidewall, a cab pillar and a first pillar; the second sidewall comprises a second window sill sidewall, a second pillar, a third pillar and a fourth pillar; the second pillar, the third pillar and the fourth pillar are arranged at intervals in the longitudinal direction of the second window sill sidewall and are fixed to the second window sill sidewall; the sidewall upper beam, the window head sidewall, the first window sill sidewall, the cab pillar, the first pillar, the second window sill sidewall, the second pillar, the third pillar and the fourth pillar are profiles obtained by integral forming extrusion so as to meet the lightweight design requirements of the sidewall. The sidewall has a high degree of modularity, and the universality is improved; all modules are independent of each other, facilitating manufacturing and simplifying maintenance; and the sidewall is integrally machined, ensuring high dimensional accuracy.

Description

Side wall, train body and train Technical Field

[0001] The present application relates to the technical field of rail vehicles, and in particular to a side wall, a train body, and a train. Background Art

[0002] With the continuous development of my country's rail lines, new energy trolleybuses, as a new type of vehicle, have been widely used and promoted in urban rail transit to improve the rail transit network. The current high-efficiency transportation system has put new demands on the safety design of trolleybus vehicles. The use of profiled bodywork can effectively improve the safety factor of vehicles. As a key component of the entire vehicle system, the side wall structure is particularly important in terms of safety, reliability, and lightweight design.

[0003] The side walls of existing trackless trains (rubber-wheeled trains) are made of a steel plate beam welded structure. First, beams of different structures are used for frame welding, and then the skin is welded. The side wall structure has poor workability, poor stability of the plate beam welded structure, low modularity, and poor compatibility.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a side wall, a train body and a train to solve the problems of existing trackless trains using beam frames and welded skins, poor structural processability and low modularity.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A side wall comprises a side wall upper beam, a first side wall, and a second side wall, wherein the side wall upper beam extends along the length direction of a train, the first side wall and the second side wall are respectively located at two ends of the side wall upper beam in the longitudinal direction, and the upper parts of the first side wall and the second side wall are both fixed to the side wall upper beam;

[0008] The first side wall includes a window upper side wall, a first window lower side wall, a driver's cab pillar, and a first pillar. The window upper side wall is located above the first window lower side wall. The driver's cab pillar and the first pillar are respectively located at two ends of the first window lower side wall in the longitudinal direction.

[0009] The second side wall includes a second window lower side wall, a second column, a third column and a fourth column, wherein the second column, the third column and the fourth column are respectively arranged along the longitudinal direction of the second window lower side wall and are fixed to the second window lower side wall;

[0010] The side wall upper beam, the window upper side wall, the first window lower side wall, the driver's cab pillar, the first pillar, the second window lower side wall, the second pillar, the third pillar and the fourth pillar are respectively profiles obtained by integral molding and extrusion.

[0011] Compared with the prior art, the side wall, train body, and train provided in the embodiments of the present application have the following technical effects:

[0012] The side wall is composed of a side wall upper beam, a first side wall and a second side wall, and the first side wall and the second side wall are respectively located at the longitudinal ends of the side wall upper beam; the first side wall includes the upper window side wall, the lower first window side wall, the driver's cab column and the first column, and the second side wall includes the lower second window side wall, the second column, the third column and the fourth column, and the second column, the third column and the fourth column are respectively arranged along the longitudinal intervals of the lower second window side wall and are all fixed to the lower second window side wall; the side wall upper beam, the upper window side wall, the lower first window side wall, the driver's cab column, the first column, the lower second window side wall, the second column, the third column and the fourth column are respectively profiles obtained by integral molding and extrusion to meet the lightweight design of the side wall composition; at the same time, the above-mentioned side walls have a high degree of modularity, which improves versatility; each module is independent of each other, which is convenient for production and manufacturing, and easy to maintain; the side wall adopts an integral processing form with high dimensional accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] FIG1 is a schematic structural diagram of a side wall provided in an embodiment of the present application;

[0015] FIG2 is a schematic diagram of the main structure of FIG1;

[0016] FIG3 is a schematic structural diagram of a window upper side wall provided in an embodiment of the present application;

[0017] FIG4 is a schematic diagram of the cross-sectional structure of the profile of FIG3 ;

[0018] FIG5 is a schematic structural diagram of a lower side wall of a first window provided in an embodiment of the present application;

[0019] FIG6 is a schematic diagram of a cross-sectional structure of a profile connecting a side wall under a first window provided in an embodiment of the present application;

[0020] FIG7 is a schematic diagram of a cross-sectional structure of a side wall installed under a first window provided in an embodiment of the present application;

[0021] FIG8 is a schematic diagram of a cross-sectional structure of a side wall upper beam provided in an embodiment of the present application;

[0022] FIG9 is a schematic diagram of a cross-sectional structure of a cab column provided in an embodiment of the present application;

[0023] FIG10 is a schematic diagram of a cross-sectional structure of a profile of a third column provided in an embodiment of the present application;

[0024] FIG11 is a schematic diagram of a cross-sectional structure of a first column provided in an embodiment of the present application;

[0025] FIG12 is a schematic diagram of a cross-sectional structure of a side wall installed under a second window provided in an embodiment of the present application;

[0026] FIG13 is a schematic diagram of the cross-sectional structure of the profile of the second connection installation side wall provided in an embodiment of the present application.

[0027] The numbers in the accompanying drawings are as follows: side wall upper beam 10, first side wall 20, second side wall 30; window upper side wall 21, first window lower side wall 22, driver's cab pillar 23, first pillar 24; second window lower side wall 31, second pillar 32, third pillar 33, fourth pillar 34; first window upper side wall 211, second window upper side wall 212; first window upper side wall profile plate 2111, first window upper side wall longitudinal connecting portion 2112, first window upper side wall vertical connecting portion 2113; second window upper side wall profile 2121, second window upper side wall connecting profile 2122; first window lower connecting side wall 221, first window lower mounting side wall 222; first window lower mounting side wall profile 2221, first window lower mounting side wall top connecting portion 2222, first window lower mounting side wall bottom connecting portion 2223; First window lower connecting side wall profile 2212, first window lower connecting side wall top connection portion 2213, first window lower connecting side wall bottom connection portion 2214, first window lower connecting side wall middle connection portion 2215; first window lower connecting side wall profile plate 22121, first horizontal reinforcing rib plate 22122, first vertical reinforcing rib plate 22123, first oblique rib plate 22124; side wall upper side beam top profile 111, side wall upper side beam top connection portion 112, C-shaped groove 113, side wall upper side beam bottom profile 114, side wall upper side beam bottom connection portion 115; cab column profile 231, cab column connection profile 232; first column profile plate 241, first column connection profile 242; second window lower connecting side wall 311, second window lower mounting side wall 312; The side wall profile 3121 is installed under the second window, the top connection part 3122 of the side wall is installed under the second window, and the bottom connection part 3123 of the side wall is installed under the second window; the side wall profile 3111 is connected under the second window, the top connection part 3112 of the side wall is connected under the second window, the bottom connection part 3113 of the side wall is connected under the second window, and the middle connection part 3114 of the side wall is connected under the second window; the side wall profile plate 31111, the second horizontal reinforcing rib plate 31112, the second vertical reinforcing rib plate 31113, and the second oblique rib plate 31114 are connected under the second window; the third column profile plate 331, the third column connecting profile 332, and the third oblique rib plate 333. DETAILED DESCRIPTION

[0028] The embodiments of the present application disclose a side wall, a train body and a train to solve the problems of existing trackless trains that use beam frames and welded skins, have poor structural processability and low modularity.

[0029] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0030] Please refer to Figures 1-4, Figure 1 is a structural schematic diagram of a side wall provided in an embodiment of the present application; Figure 2 is a main view structural schematic diagram of Figure 1; Figure 3 is a structural schematic diagram of the side wall above the window provided in an embodiment of the present application; Figure 4 is a profile cross-sectional structure schematic diagram of Figure 3; Figure 5 is a structural schematic diagram of the side wall under the first window provided in an embodiment of the present application; Figure 6 is a profile cross-sectional structure schematic diagram of the first window lower connected side wall provided in an embodiment of the present application; Figure 7 is a profile cross-sectional structure schematic diagram of the first window lower installed side wall provided in an embodiment of the present application; Figure 8 is a profile cross-sectional structure schematic diagram of the side wall upper beam provided in an embodiment of the present application; Figure 9 is a profile cross-sectional structure schematic diagram of the driver's cab column provided in an embodiment of the present application; Figure 10 is a profile cross-sectional structure schematic diagram of the third column provided in an embodiment of the present application; Figure 11 is a profile cross-sectional structure schematic diagram of the first column provided in an embodiment of the present application; Figure 12 is a profile cross-sectional structure schematic diagram of the second window lower installed side wall provided in an embodiment of the present application; Figure 13 is a profile cross-sectional structure schematic diagram of the second connected installed side wall provided in an embodiment of the present application.

[0031] In a specific embodiment, the side wall provided herein is applied to the body of a train, preferably a rubber-wheeled train. The side wall comprises a side wall upper side beam 10, a first side wall 20, and a second side wall 30. The side wall upper side beam 10 extends along the length of the train, and the first side wall 20 and the second side wall 30 are respectively located at the longitudinal ends of the side wall upper side beam 10. The upper portions of the first side wall 20 and the second side wall 30 are welded to the side wall upper side beam 10. Preferably, the first side wall 20 and the second side wall 30 are spaced longitudinally apart, with the space between them forming a door mounting area.

[0032] The first side wall 20 includes an upper window side wall 21, a first window lower side wall 22, a driver's cab pillar 23 and a first pillar 24. The upper window side wall 21 is located above the first window lower side wall 22. The driver's cab pillar 23 and the first pillar 24 are respectively located at both ends of the first window lower side wall 22 in the longitudinal direction; the top end of the upper window side wall 21 is fixed to the bottom end of the side wall upper beam 10, and the bottom end of the upper window side wall 21 is fixed to the top end of the first window lower side wall 22; one longitudinal end of the upper window side wall 21 is welded and fixed to the driver's cab pillar 23, and the other longitudinal end of the upper window side wall 21 is arranged opposite to the first pillar 24. The upper window side wall 21, the first window lower side wall 22, the side wall upper beam 10 and the first pillar 24 form a vehicle window installation area. Preferably, the window upper side wall 21, the first window lower side wall 22, the driver's cab pillar 23 and the first pillar 24 are welded and fixed between adjacent structures to form the first side wall 20 after welding, so as to improve the degree of modularity and improve the compatibility and processability of the side wall.

[0033] The second side wall 30 includes a second window lower side wall 31, a second pillar 32, a third pillar 33, and a fourth pillar 34. The second pillars 32, the third pillar 33, and the fourth pillar 34 are spaced longitudinally along the second window lower side wall 31. The top ends of the second pillars 32, the third pillar 33, and the fourth pillar 34 are fixed to the side wall upper rail 10, while the bottom ends of the second pillars 32, the third pillar 33, and the fourth pillar 34 are fixed to the second window lower side wall 31. A window mounting area is formed between the side wall upper rail 10, the second window lower side wall 31, the second pillar 32, the third pillar 33, and the fourth pillar 34, respectively. Similarly, adjacent structures of the second window lower side wall 31, the second pillar 32, the third pillar 33, and the fourth pillar 34 are welded and fixed to form the second side wall 30, further improving the modularity, compatibility, and manufacturability of the side wall.

[0034] The side wall upper beam 10, the window upper side wall 21, the first window lower side wall 22, the driver's cab pillar 23, the first pillar 24, the second window lower side wall 31, the second pillar 32, the third pillar 33 and the fourth pillar 34 are respectively profiles obtained by integral molding and extrusion; thereby improving the modularity of the side wall and realizing lightweight design. The side wall adopts a production method of welding different profiles to finally form an overall side wall module. Compared with the existing process of welding beams and skins, it improves the structural stability and processability of the side wall, and can reduce the weight of the vehicle body while ensuring strength.

[0035] Compared with the prior art, the side wall, train body, and train provided in the embodiments of the present application have the following technical effects:

[0036] The side wall is composed of a side wall upper beam 10, a first side wall 20 and a second side wall 30, the first side wall 20 and the second side wall 30 are respectively located at the longitudinal ends of the side wall upper beam 10; the first side wall 20 includes a window upper side wall 21, a first window lower side wall 22, a driver's cab column 23 and a first column 24, the second side wall 30 includes a second window lower side wall 31, a second column 32, a third column 33 and a fourth column 34, the second column 32, the third column 33 and the fourth column 34 are respectively arranged along the longitudinal interval of the second window lower side wall 31 and are fixed to the second window lower side wall 31; the side wall upper beam 10, the window upper side wall 21, the first window lower side wall 22, the driver's cab pillar 23, the first pillar 24, the second window lower side wall 31, the second pillar 32, the third pillar 33 and the fourth pillar 34 are respectively profiles obtained by integral molding and extrusion to meet the lightweight design of the side wall composition; at the same time, the above-mentioned side wall has a high degree of modularization and improves versatility; each module is independent of each other, which is convenient for production and manufacturing, and easy to maintain; the side wall adopts an integral processing form and has high dimensional accuracy.

[0037] Specifically, the window upper side wall 21 includes:

[0038] The first window upper side wall 211 and the second window upper side wall 212 are arranged and welded in sequence along the longitudinal direction. The first window upper side wall 211 is located on the side close to the driver's cab pillar 23 and the two are welded and fixed; the second window upper side wall 212 is located on the side of the first window upper side wall 211 away from the driver's cab pillar 23 along the longitudinal direction, and the second window upper side wall 212, the first pillar 24, the side wall upper beam 10 and the first window lower side wall 22 form a vehicle window installation area.

[0039] Optionally, the first window upper side wall 211 includes two first window upper side wall profile plates 2111 spaced apart, with a plurality of reinforcing ribs provided between the two first window upper side wall profile plates 2111 to form a plurality of closed rectangular hollow cavities; the respective reinforcing ribs are preferably arranged longitudinally, and the first window upper side wall profile plates 2111 are welded and fixed to the reinforcing ribs. In order to achieve fixation with the driver's cab pillar 23 and the second window upper side wall 212, a first window upper side wall longitudinal connection portion 2112 is provided at each longitudinal end of any first window upper side wall profile plate 2111, and the first window upper side wall longitudinal connection portion 2112 is welded to the driver's cab pillar 23 and the second window upper side wall 212 respectively. The welding structure is simple in form, has good welding processability, small deformation, strong operability and high strength. The first window upper side wall longitudinal connection portion 2112 is specifically a tab extending outward to provide a working point for welding and improve the welding effect.

[0040] Furthermore, a first window upper side wall vertical connection part 2113 is respectively provided at both vertical ends of any first window upper side wall profile plate 2111, and the first window upper side wall vertical connection part 2113 is overlapped with the side wall upper beam 10 and the first window lower side wall 22, and the connection points are both provided with notches, and the two notches form a V-shaped weld for welding to increase the welding area and improve the connection strength; in one embodiment, the first window upper side wall vertical connection part 2113 can be set as a groove.

[0041] In a preferred embodiment, the second window upper sidewall 212 comprises a second window upper sidewall profile 2121 and a second window upper sidewall connecting profile 2122, which are welded together in sequence along the longitudinal direction. The second window upper sidewall connecting profile 2122 is located laterally on the side of the second window upper sidewall profile 2121 closer to the interior of the vehicle compartment and is used to mount the window. In this embodiment, the second window upper sidewall profile 2121 and the second window upper sidewall connecting profile 2122 both have rectangular closed cross-sections. This lightweight structure contributes to the lightweight design of the train. The second window upper sidewall profile 2121 comprises two opposing second window upper sidewall profile 2121 plates and a plurality of reinforcing rib plates to form a rectangular closed structure.

[0042] In another embodiment, the first window lower side wall 22 includes a first window lower connecting side wall 221 and a first window lower mounting side wall 222 ;

[0043] The longitudinal ends of the first window lower connecting side wall 221 are respectively welded to the driver's cab pillar 23 and the first pillar 24, and the vertical ends of the first window lower connecting side wall 221 are respectively welded to the window upper side wall 21 and the first window lower installation side wall 222;

[0044] One longitudinal end of the first window lower mounting side wall 222 is welded to the first column 24. The other longitudinal end of the first window lower mounting side wall 222 forms a wheel mounting area with the first window lower connecting side wall 221 and the driver's cab column 23. This divides the first window lower side wall 22 into two modules, which can be configured accordingly based on different usage requirements and window types, further improving the degree of modularity.

[0045] Optionally, the first window-mounted side wall 222 includes a first window-mounted side wall profile 2221, a first window-mounted side wall top connection portion 2222 and a first window-mounted side wall bottom connection portion 2223; wherein, the first window-mounted side wall top connection portion 2222 is located at the top of the first window-mounted side wall profile 2221, and is used to be welded and fixed to the first window-mounted side wall 221; the first window-mounted side wall top connection portion 2222 preferably extends longitudinally along the first window-mounted side wall profile 2221, and the first window-mounted side wall top connection portion 2222 is configured as two spaced-apart tabs, which are plugged into the tabs corresponding to the first window-mounted side wall 221, and a welding groove is formed between adjacent tabs after plugging to achieve welding.

[0046] The first sidewall bottom connection portion 2223 is located at the bottom end of the first sidewall profile 2221 and is used for welding to the base frame. The first sidewall bottom connection portion 2223 facilitates welding of the first sidewall profile 2221 to the base frame. The first sidewall bottom connection portion 2223 is also configured as two spaced-apart tabs, with a welding groove formed between the tabs and the base frame to facilitate welding.

[0047] In another embodiment, the first under-window side wall profile 2221 includes two spaced-apart first under-window side wall profiles 2221 plates and a plurality of reinforcing rib plates, each reinforcing rib plate being located between the two first under-window side wall profiles 2221 plates and spaced-apart vertically from top to bottom; the bottom end cross-sectional width of the two first under-window side wall profiles 2221 plates gradually increases from top to bottom, specifically, the cross-sectional width of the first under-window side wall profile 2221 plate between the two bottom reinforcing rib plates gradually increases from top to bottom, the first under-window side wall profile 2221 plate located on the outside is vertically arranged, and the first under-window side wall profile 2221 plate located on the inside is inclined inward from top to bottom to achieve a gradual increase in the bottom end cross-sectional width of the first under-window side wall profile 2221 to increase the connection strength.

[0048] In a preferred embodiment, the first window lower connecting side wall 221 includes a first window lower connecting side wall profile 2212, a first window lower connecting side wall top connection portion 2213, a first window lower connecting side wall bottom connection portion 2214 and a first window lower connecting side wall middle connection portion 2215; the top of the first window lower connecting side wall profile 2212 has a first sunken mounting platform for installing the vehicle window, and the first sunken mounting platform is located on the side close to the first column 24. The side wall upper beam 10, the second window upper side wall 212 and the first column 24 can also be provided with sunken mounting platforms accordingly, which will not be repeated here.

[0049] The top connection part 2213 of the first window lower connecting side wall is located at the top of the first window lower connecting side wall profile 2212. The top connection part 2213 of the first window lower connecting side wall can also be set as a group of relatively set plugs extending upward away from the first window lower connecting side wall profile 2212, which are plugged into the plugs or slots of the window upper side wall 21 (first column 24) and form a welding groove at the connection to increase the welding area and improve the welding effect.

[0050] Similarly, the bottom connection portion 2214 of the first window lower connecting side wall is located at the bottom end of the first window lower connecting side wall profile 2212, and is used to be welded and fixed to the top connection portion 2222 of the first window lower mounting side wall 222; the bottom connection portion 2214 of the first window lower connecting side wall is configured as a group of relatively arranged inserts extending downward away from the first window lower connecting side wall profile 2212, which are plugged into the inserts of the top connection portion 2222 of the first window lower mounting side wall, and a welding groove is formed at the connection to increase the welding area and improve the welding effect.

[0051] The middle connection part 2215 of the first window lower connecting side wall is located on the inner wall surface of the first window lower connecting side wall profile 2212 and extends inward; the middle connection part 2215 of the first window lower connecting side wall is used to be welded and fixed to the driver's cab pillar 23, and the middle connection part 2215 of the first window lower connecting side wall extends toward the side close to the driver's cab pillar 23. The middle connection part 2215 of the first window lower connecting side wall is provided with a slot on the side close to the driver's cab pillar 23, which is welded after being plugged into the driver's cab pillar profile 231 to improve the connection strength; on the other hand, the middle connection part 2215 of the first window lower connecting side wall is used to install the vehicle interior, specifically, the side of the middle connection part 2215 of the first window lower connecting side wall facing away from the first window lower connecting side wall profile 2212 is provided with two plugs extending in the horizontal direction, and the two plugs are set to unequal lengths to provide an interface for welding with the vehicle interior.

[0052] As for the structure of the side wall profile 2212 connected under the first window, it includes two first side wall profile plates 22121 connected under the window, several first horizontal reinforcing rib plates 22122, a first vertical reinforcing rib plate 22123 and several first oblique rib plates 22124; the two first side wall profile plates 22121 connected under the window are arranged at intervals, and the first horizontal reinforcing rib plates 22122 are arranged in sequence along the vertical direction to form several rectangular hollow cavities; the first vertical reinforcing rib plate 22123 vertically penetrates part of the first horizontal reinforcing rib plate 22122 and is welded and fixed to the first horizontal reinforcing rib plate 22122 to reinforce the side wall profile plate 22121 connected under the first window in the vertical direction to improve the connection strength. Furthermore, to further enhance the connection strength, a first oblique rib 22124 is provided in the lower portion of the first window lower connecting side wall profile plate 22121. The ends of the first oblique rib 22124 are connected to the first horizontal reinforcing rib 22122 to form a plurality of polygons. The cross-section of the first window lower connecting side wall intermediate connection portion 2215 is similarly composed of a plurality of polygonal cavities to enhance the connection strength of the first window lower connecting side wall intermediate connection portion 2215.

[0053] In a preferred embodiment, the side wall upper edge beam 10 includes a side wall upper edge beam top profile 111 and a side wall upper edge beam bottom profile 114; the side wall upper edge beam top profile 111 and the side wall upper edge beam bottom profile 114 are welded and fixed, and the side wall upper edge beam bottom profile 114 is arranged in a vertical direction, and the side wall upper edge beam top profile 111 is inclined inward relative to the side wall upper edge beam bottom profile 114. The top profile 111 of the side wall upper beam is provided with a reinforcing rib plate and an oblique rib plate. The reinforcing rib plate is perpendicular to the top profile 111 of the side wall upper beam, and the two ends of the oblique rib plate are connected to the end of the reinforcing rib plate to form a number of hollow cavities with polygonal cross-sections; on the other hand, the bottom profile 114 of the side wall upper beam is provided with a transverse reinforcing rib plate, a vertical reinforcing rib plate and an oblique rib plate. The transverse reinforcing rib plates are arranged in sequence from top to bottom, and the oblique rib plate is arranged between the two uppermost transverse reinforcing rib plates to form a hollow cavity with a polygonal cross-section, so as to increase the connection strength of the connection together with the top profile 111 of the side wall upper beam; vertical reinforcing rib plates are provided between the remaining adjacent transverse reinforcing rib plates to increase the connection strength of the bottom profile 114 of the side wall upper beam.

[0054] The top of the side wall upper beam top profile 111 is provided with a side wall upper beam top connection portion 112, which is welded to the roof. The side wall upper beam top connection portion 112 is also provided with two spaced-apart inserts extending away from the side wall upper beam top profile 111, which are plugged into the inserts or slots on the roof, and a welding groove is formed at the connection to improve the welding effect. At the same time, the inner wall surface of the side wall upper beam top profile 111 is provided with a C-shaped groove 113 for installing the vehicle interior. The C-shaped groove 113 extends along the length of the side wall upper beam top profile 111. The inner wall surface is provided with two spaced-apart extensions, and the ends of the two extensions away from the side wall upper beam top profile 111 are each provided with an inwardly extending bend. The two bends, the two extensions, and the inner wall surface form the C-shaped groove 113. The C-shaped groove 113 and the side wall upper beam top profile 111 are integrally provided, with high connection strength and easy production and processing.

[0055] The side wall upper side beam bottom end profile 114 is located at the bottom end of the side wall upper side beam top end profile 111; the bottom end of the side wall upper side beam bottom end profile is provided with a side wall upper side beam bottom end connecting portion 115 for welding and fixing to the first side wall 20 and the second side wall 30. The inner wall surface of the side wall upper side beam bottom end profile 114 is provided with a C-shaped groove 113 for installing the vehicle interior. The structure of the C-shaped groove 113 can be set with reference to the C-shaped groove 113 of the side wall upper side beam top end profile 111, and will not be repeated here.

[0056] The bottom connection portion 115 of the side wall upper beam can also be configured as two oppositely disposed inserts, which are plugged into the inserts of the first side wall 20 and the second side wall 30 and form a welding groove at the connection to improve the welding effect.

[0057] In another embodiment, the first pillar 24 and the second pillar 32 are arranged at intervals in the longitudinal direction and form a door installation area with the side wall upper beam 10; the first pillar 24 and the second pillar 32 have the same structure, and the structure of the first pillar 24 is taken as an example for explanation; the first pillar 24 includes a first pillar profile plate 241 and a first pillar connecting profile 242 welded and fixed, the first pillar connecting profile 242 is located longitudinally at one end of the first pillar profile plate 241 close to the vehicle window, and in the transverse direction, the first pillar connecting profile 242 is located on the side close to the interior of the vehicle compartment for installing the vehicle window; the first pillar profile plate 241 and the first pillar connecting profile 242 are both rectangular closed profiles for lightweight setting to reduce the weight of the side wall; and the longitudinal end of the first pillar profile plate 241 facing away from the first pillar profile plate 241 and the inner side wall of the first pillar profile plate 241 are respectively provided with outwardly extending C-shaped grooves to provide welding interfaces for welding the first pillar 24, the second pillar 32 and the vehicle door.

[0058] In this embodiment, the cab pillar 23 is welded together from a cab pillar profile 231 and a cab pillar connecting profile 232. The cab pillar connecting profile 232 is longitudinally located inwardly of the cab pillar profile 231 and is welded to the upper window sidewall 21, the first window lower sidewall 22, and the sidewall upper rail 10. The cab pillar profile 231 and the cab pillar connecting profile 232 are each rectangular closed profiles. Diagonal ribs are provided within the hollow cavity of the rectangular closed profiles where the cab pillar profile 231 and cab pillar connecting profile 232 are connected to enhance connection strength.

[0059] Optionally, the second window lower side wall 31 includes a second window lower connecting side wall 311 and a second window lower mounting side wall 312 that are welded and fixed; the second column 32, the third column 33 and the fourth column 34 are arranged at intervals along the longitudinal direction of the second window lower connecting side wall 311 and are welded and fixed, and the second column 32, the third column 33, the fourth column 34, the second window lower connecting side wall 311 and the side wall upper beam 10 form two vehicle window mounting areas; wherein, the second column 32 and the fourth column 34 are respectively located at the longitudinal ends of the second window lower connecting side wall 311, and the third column 33 is located above the longitudinal middle part of the second window lower connecting side wall 311, and the third column 33 forms two vehicle window mounting areas with the second column 32 and the fourth column 34 respectively. The bottom end of the second window lower connecting side wall 311 is welded and fixed to the second window lower mounting side wall 312. A second window lower mounting side wall 312 is respectively provided at both ends along the longitudinal direction below the second window lower connecting side wall 311. The second window lower connecting side wall 311 and the two second window lower mounting side walls 312 form a wheel mounting area.

[0060] The structure of the second window-mounted side wall 312 can be set with reference to the structure of the first window-mounted side wall 222, and specifically includes a second window-mounted side wall profile 3121, a second window-mounted side wall top connection portion 3122 and a second window-mounted side wall bottom connection portion 3123; the second window-mounted side wall top connection portion 3122 is located at the top of the second window-mounted side wall profile 3121, and is used for welding and fixing to the second window-mounted side wall 311; the second window-mounted side wall top connection portion 3122 preferably extends longitudinally along the second window-mounted side wall profile 3121, and is set as two spaced-apart tabs, which are plugged into the tabs corresponding to the second window-mounted side wall 311, and after plugging, a welding groove is formed between adjacent tabs to achieve welding.

[0061] The second sidewall bottom connection portion 3123 is located at the bottom end of the second sidewall profile 3121 and is used for welding to the base frame. This allows for welding of the second sidewall profile 3121 to the base frame. The second sidewall bottom connection portion 3123 is also configured as two spaced-apart tabs, with a welding groove formed between the tabs and the base frame to facilitate welding.

[0062] Optionally, the structure of the second window-mounted side wall profile 3121 is also set with reference to the second window-mounted side wall profile 3121, specifically including two spaced-apart second window-mounted side wall profile 3121 plates and a plurality of reinforcing rib plates, each reinforcing rib plate being located between the two second window-mounted side wall profile 3121 plates and spaced-apart vertically from top to bottom; the bottom end cross-sectional width of the two second window-mounted side wall profiles 3121 plates gradually increases from top to bottom, specifically, the cross-sectional width of the second window-mounted side wall profile 3121 plates between the two bottommost reinforcing rib plates gradually increases from top to bottom, the second window-mounted side wall profile 3121 plates located on the outside are vertically set, and the second window-mounted side wall profile 3121 plates located on the inside are inclined inward from top to bottom, so as to realize the gradual increase in the bottom end cross-sectional width of the second window-mounted side wall profile 3121, thereby increasing the connection strength.

[0063] In one embodiment, the second window lower connecting side wall 311 includes a second window lower connecting side wall profile 3111, a second window lower connecting side wall top connection portion 3112, a second window lower connecting side wall bottom connection portion 3113 and a second window lower connecting side wall middle connection portion 3114; the top of the second window lower connecting side wall profile 3111 has two second sunken mounting platforms for installing car windows, which are respectively located on the left and right sides of the third column 33.

[0064] The top connection part 3112 of the second window lower connecting side wall is located at the top of the second window lower connecting side wall profile 3111. The top connection part 3112 of the second window lower connecting side wall can also be set as a group of relatively set plug-ins extending upward away from the second window lower connecting side wall profile 3111, which are plugged into the plug-ins or slots of the second column 32, the third column 33 and the fourth column 34, and form a welding groove at the connection to increase the welding area and improve the welding effect.

[0065] Similarly, the bottom connection portion 3113 of the second window lower connecting side wall is located at the bottom end of the second window lower connecting side wall profile 3111, and is used to be welded and fixed to the second window lower mounting side wall top connection portion 3122 of the second window lower mounting side wall 312; the bottom connection portion 3113 of the second window lower connecting side wall is configured as a group of relatively arranged inserts extending downward away from the second window lower connecting side wall profile 3111, which are plugged into the inserts of the second window lower mounting side wall top connection portion 3122, and a welding groove is formed at the connection to increase the welding area and improve the welding effect.

[0066] Similarly, the interface of the second window lower connecting side wall intermediate connecting portion 3114 may be configured with reference to the first window lower connecting side wall intermediate connecting portion 2215 , and will not be described in detail herein.

[0067] Specifically, the structure of the side wall profile 3111 connected under the second window includes two second side wall profile plates 31111, several second horizontal reinforcing ribs 31112, second vertical reinforcing ribs 31113 and several second oblique ribs 31114; the two second side wall profile plates 31111 are arranged at intervals, and the second horizontal reinforcing ribs 31112 are arranged in sequence along the vertical direction to form several rectangular hollow cavities; the second vertical reinforcing ribs 31113 vertically penetrate part of the second horizontal reinforcing ribs 31112 and are welded and fixed to the second horizontal reinforcing ribs 31112 to reinforce the side wall profile plates 31111 connected under the second window in the vertical direction to improve the connection strength. Furthermore, to further enhance the connection strength, a second oblique rib 31114 is positioned in the lower portion of the second window lower connecting side wall profile plate 31111. The two ends of the second oblique rib 31114 are connected to the second horizontal reinforcing rib 31112 to form a plurality of polygons. The cross-section of the second window lower connecting side wall intermediate connection 3114 is also composed of a plurality of polygonal cavities to enhance the connection strength of the second window lower connecting side wall intermediate connection 3114.

[0068] In another embodiment, the structure of the fourth column 34 can be set with reference to the second window upper side wall 212, specifically including a welded fourth column 34 profile plate and a fourth column 34 connecting profile. The fourth column 34 connecting profile is located longitudinally at one end of the fourth column 34 profile plate close to the vehicle window for mounting the vehicle window.

[0069] The profile plate of the fourth column 34 and the connecting profile of the fourth column 34 are both rectangular closed profiles for lightweight design, and the profile plate of the fourth column 34 has a plurality of closed rectangular hollow cavities.

[0070] The third pillar 33 includes a third pillar profile plate 331 and two third pillar connecting profiles 332. The two third pillar connecting profiles 332 are respectively located at both ends of the third pillar profile plate 331 along the longitudinal direction and are respectively used for installing car windows; the third pillar profile plate 331 and the third pillar connecting profile 332 are both rectangular closed profiles, and the third pillar profile plate 331 has a plurality of third oblique ribs 333 to improve the connection strength.

[0071] In a specific embodiment, the side wall provided by the present application includes a side wall upper beam 10, a first side wall 20 and a second side wall 30; wherein the first side wall 20 includes a window upper side wall 21, a first window lower side wall 22, a driver's cab pillar 23 and a first pillar 24; the second side wall 30 includes a second window lower side wall 31, a second pillar 32, a third pillar 33 and a fourth pillar 34, the window upper side wall 21 includes a first window upper side wall 211 and a second window upper side wall 212, the first window lower side wall 2 ... The upper side wall 211 is provided with a first window upper side wall longitudinal connecting portion 2112 at both longitudinal ends, which are respectively welded to the driver's cab column connecting profile 232 of the driver's cab column 23 and the second window upper side wall profile 2121. The first window upper side wall 211 is provided with a first window upper side wall vertical connecting portion 2113 at both vertical ends, which are respectively welded to the side wall upper side beam bottom end connecting portion 115 of the side wall upper side beam 10 and the first window lower connecting side wall top connecting portion 2213 of the first window lower side wall 22.

[0072] The second window upper side wall 212 is used to install the car window through the second window upper side wall connecting profile 2122. Slots are provided at both vertical ends of the second window upper side wall 212, which are respectively inserted into the side wall upper side beam bottom end connection part 115 of the side wall upper side beam 10 and the first window lower connecting side wall top connection part 2213 of the first window lower side wall 22, and then welded at the connection.

[0073] The first window lower side wall 22 includes a first window lower connecting side wall 221 and a first window lower mounting side wall 222. The first window lower connecting side wall top connection portion 2213 of the first window lower connecting side wall 221 is respectively connected to the first window upper side wall vertical connection portion 2113 and the second window upper side wall 212. The first window lower connecting side wall bottom connection portion 2214 is welded to the first window lower mounting side wall top connection portion 2222 of the first window lower mounting side wall 222. The first window lower connecting side wall middle connection portion 2215 is welded and fixed to the driver's cab pillar 23 and is also used for mounting the vehicle interior. The longitudinal ends of the first window lower side wall 22 are respectively welded to the driver's cab pillar 23 and the second pillar 32. The first window lower mounting side wall top connection portion 2222 of the first window lower mounting side wall 222 is welded to the first window lower connecting side wall bottom connection portion 2214, and the first window lower mounting side wall bottom connection portion 2223 is welded and fixed to the chassis.

[0074] The side wall upper beam bottom connection portion 115 of the side wall upper beam 10 is welded to the top of the cab pillar 23, the second pillar 32, the third pillar 33 and the fourth pillar 34 respectively, and the side wall upper beam top connection portion 112 of the side wall upper beam 10 is welded to the roof.

[0075] The top connection part 3112 of the second window lower connecting side wall 311 is welded to the second column 32, the third column 33 and the fourth column 34 respectively, and the bottom connection part 3113 of the second window lower connecting side wall is welded to the top connection part 3122 of the second window lower installation side wall 312.

[0076] Among them, at one longitudinal end of the train, the second window upper side wall 212, the first pillar 24, the side wall upper beam 10 and the first window lower side wall 22 form a window installation area; at the other longitudinal end of the train, the second pillar 32, the third pillar 33, the fourth pillar 34, the second window lower connecting side wall 311 and the side wall upper beam 10 form two window installation areas; at the same time, the first pillar 24 and the second pillar 32 form a door installation area; the driver's cab pillar 23, the first window lower connecting side wall 221, and the first window lower installation side wall 222 form a front wheel installation area, and the second window lower connecting side wall 311 and the two second window lower installation side walls 312 form a rear wheel installation area.

[0077] The above-mentioned side walls can be made of EN AW-6005A-T6 material. Different cross-sectional profiles are set accordingly according to the usage requirements of the vehicle body and the structural design requirements of the windows and wheels. Each profile is an integrally formed extruded structure with a wall thickness between 3-8mm. The internal ribs of each profile are set according to requirements. While ensuring strength, the interface usage requirements are maximized while reducing the vehicle's own weight. At the same time, the side walls are produced by a process of welding different profiles. Taking the first side wall 20 as an example, the profiles of the first window upper side wall 211, the second window upper side wall 212, the first window lower connecting side wall 221 and the first window lower installation side wall 222 are first processed, and then the first window upper side wall 211 and the second window upper side wall 212, the first window lower connecting side wall 221 and the first window lower installation side wall 222 are welded respectively; then the window upper side wall 21 and the first window lower side wall 22 are welded as a whole, and other profiles such as the driver's cab column 23 and the side wall upper beam 10 are welded; accordingly, the second side wall 30 is processed in the same way; and finally the side wall integral module is formed.

[0078] The side wall's component profiles, as well as other body components, are welded using a butt-through welding process with built-in backing plates. This results in a simple weld structure, excellent workability, minimal deformation, strong operability, and high strength. Furthermore, the side wall incorporates C-shaped slots at appropriate locations to accommodate other structural requirements, eliminating the need for additional connecting structures. The side wall is machined integrally for high dimensional accuracy and employs a modular design for versatility. Independent modules facilitate rapid manufacturing and easy maintenance. The profile tailor-welding process results in a simple weld structure and strong workability.

[0079] Based on the side walls provided in the above embodiments, the present application also provides a train body, including a roof and an underframe, and the train body includes any one of the side walls in the above embodiments. Since the train body adopts the side walls in the above embodiments, please refer to the above embodiments for the beneficial effects of the train body.

[0080] The present application also provides a train including the above-mentioned train body, which also has the above-mentioned technical effects.

[0081] In the description of this application, it should be understood that the terms "front", "rear", "head", "tail", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0083] In this application, unless otherwise specified or limited, terms such as "mounted" and "connected" should be understood broadly. For example, "connected" can refer to direct connection or indirect connection through an intermediate medium, and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0084] Although some optional embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including some optional embodiments and all changes and modifications that fall within the scope of the present application.

[0085] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A side wall, characterized in that: The side wall upper beam comprises a first side wall and a second side wall, wherein the side wall upper beam extends along the length direction of the train, the first side wall and the second side wall are respectively located at two ends of the side wall upper beam in the longitudinal direction, and the upper parts of the first side wall and the second side wall are fixed to the side wall upper beam; The first side wall includes a window upper side wall, a first window lower side wall, a driver's cab pillar, and a first pillar. The window upper side wall is located above the first window lower side wall. The driver's cab pillar and the first pillar are respectively located at two ends of the first window lower side wall in the longitudinal direction. The second side wall includes a second window lower side wall, a second column, a third column and a fourth column, wherein the second column, the third column and the fourth column are respectively arranged along the longitudinal direction of the second window lower side wall and are fixed to the second window lower side wall; The side wall upper beam, the window upper side wall, the first window lower side wall, the driver's cab pillar, the first pillar, the second window lower side wall, the second pillar, the third pillar and the fourth pillar are respectively profiles obtained by integral molding and extrusion.

2. The side wall according to claim 1, characterized in that The window upper side wall comprises: A first window upper side wall and a second window upper side wall are sequentially arranged and welded in the longitudinal direction, wherein the first window upper side wall is located on a side close to the driver's cab pillar and the two are welded and fixed; The second window upper side wall, the first pillar, the side wall upper side beam and the first window lower side wall form a vehicle window installation area.

3. The side wall according to claim 2, characterized in that: The first window upper side wall comprises two first window upper side wall profile plates spaced apart from each other, and a plurality of reinforcing rib plates are provided between the two first window upper side wall profile plates to form a plurality of closed rectangular hollow cavities; The longitudinal ends of any one of the first window upper side wall profile plates are respectively provided with first window upper side wall longitudinal connecting portions, which are respectively welded and fixed to the driver's cab pillar and the second window upper side wall; And / or, vertical ends of any one of the first window upper side wall profile plates are respectively provided with first window upper side wall vertical connecting parts for being welded and fixed to the side wall upper beam and the first window lower side wall.

4. The side wall according to claim 2, characterized in that: The second window upper side wall comprises a second window upper side wall profile and a second window upper side wall connecting profile that are welded and fixed in sequence along the longitudinal direction, and the second window upper side wall connecting profile is used for installing the vehicle window; And / or, the second window upper side wall profile and the second window upper side wall connecting profile are both rectangular closed profiles.

5. The side wall according to claim 1, characterized in that: The first window lower side wall includes a first window lower connecting side wall and a first window lower installation side wall; The longitudinal ends of the first window lower connecting side wall are respectively welded to the driver's cab column and the first column, and the vertical ends of the first window lower connecting side wall are respectively welded to the window upper side wall and the first window lower installation side wall; One longitudinal end of the side wall installed under the first window is welded to the first column, and the other longitudinal end of the side wall installed under the first window is connected to the side wall under the first window and the driver's cab column to form a wheel installation area.

6. The side wall according to claim 5, characterized in that: The side wall installed under the first window includes: Install the side wall profile under the first window; A top connection portion of the first window lower installation side wall is located at the top of the first window lower installation side wall profile and is used for welding and fixing to the first window lower connection side wall; The bottom end connecting portion of the side wall installed under the first window is located at the bottom end of the side wall profile installed under the first window. Used for welding and fixing to the base frame.

7. The side wall according to claim 6, characterized in that: The side wall profile installed under the first window includes: Two first window-mounted side wall profile panels and a plurality of reinforcing rib panels are spaced apart, each reinforcing rib panel being located between the two first window-mounted side wall profile panels and spaced apart vertically from top to bottom; The width of the bottom cross-section of the side wall profile plates installed under the two first windows increases gradually from top to bottom.

8. The side wall according to claim 7, characterized in that: The side wall connected under the first window includes: The first window is connected to the side wall profile, and the top end has a first sunken mounting platform for mounting the window; A top connection portion of the first window lower connecting side wall is located at the top of the first window lower connecting side wall profile and is used for welding and fixing to the window upper side wall and the first column; The bottom end connecting portion of the first window lower connecting side wall is located at the bottom end of the first window lower connecting side wall profile and is used for welding and fixing with the first window lower mounting side wall; The middle connecting portion of the first window lower connecting side wall is located on the inner wall surface of the first window lower connecting side wall profile, and is used for welding and fixing to the driver's cab column and for installing vehicle interior.

9. The side wall according to claim 8, characterized in that The first window lower connecting side wall profile includes: Two first window lower connecting side wall profile plates arranged at intervals; A plurality of first horizontal reinforcing ribs are arranged vertically between the two first window lower connecting side wall profile plates, and both ends are welded and fixed to the first window lower connecting side wall profile plates to form a plurality of rectangular hollow cavities; and / or, a first vertical reinforcing rib plate vertically penetrates a plurality of the first horizontal reinforcing rib plates and is fixed by welding; and / or, a plurality of first oblique ribs, wherein the first oblique ribs divide the inner cavity connected to the side wall profile plate under the first window into a plurality of polygons.

10. The side wall according to claim 1, characterized in that The side wall upper beam comprises: A side wall upper beam top profile, wherein the top end of the side wall upper beam top profile is provided with a side wall upper beam top connection portion for welding and fixing to the roof, and the inner wall surface of the side wall upper beam top profile is provided with a C-shaped groove for installing the interior decoration of the vehicle compartment; The bottom end profile of the side wall upper beam is located at the bottom end of the top end profile of the side wall upper beam; the bottom end of the side wall upper beam bottom end profile is provided with a side wall upper beam bottom end connecting portion for welding and fixing with the first side wall and the second side wall, and the inner wall surface of the side wall upper beam bottom end profile is provided with a C-shaped groove for installing the car interior.

11. The side wall according to claim 1, characterized in that The driver's cab column is formed by welding a driver's cab column profile and a driver's cab column connecting profile; The cab pillar connecting profile is located on the inner side of the cab pillar profile in the longitudinal direction and is respectively welded and fixed to the upper window side wall, the first window lower side wall and the side wall upper beam.

12. The side wall according to claim 1, characterized in that The first pillar and the second pillar are spaced apart in the longitudinal direction and form a door mounting area with the side wall upper beam; the first pillar and the second pillar have the same structure, and the first pillar includes: A first column profile plate and a first column connecting profile plate fixed by welding, wherein the first column connecting profile plate is located longitudinally at one end of the first column profile plate close to the vehicle window and is used for mounting the vehicle window; The first column profile plate and the first column connecting profile are both rectangular closed profiles, and the An end of the first column profile plate that is longitudinally away from the first column profile plate and an inner side wall of the first column profile plate are respectively provided with a C-shaped groove extending outward.

13. The side wall according to claim 1, characterized in that The second window lower side wall includes a second window lower connecting side wall and a second window lower mounting side wall; The second pillar, the third pillar and the fourth pillar are arranged at intervals in the longitudinal direction of the second window lower connecting side wall and are fixed by welding. The second pillar, the third pillar, the fourth pillar, the second window lower connecting side wall and the side wall upper beam form two vehicle window installation areas. The bottom end of the second window lower connecting side wall is welded and fixed to the second window lower mounting side wall, and a second window lower mounting side wall is respectively provided at both ends along the longitudinal direction below the second window lower connecting side wall. The second window lower connecting side wall and the two second window lower mounting side walls form a wheel mounting area.

14. The side wall according to claim 13, characterized in that The side wall installed under the second window includes: Install the side wall profile under the second window; A top connection portion of the second window lower installation side wall is located at the top of the second window lower installation side wall profile and is used for welding and fixing to the second window lower connection side wall; The bottom end connecting portion of the second window lower installation side wall is located at the bottom end of the second window lower installation side wall profile and is used for welding and fixing with the base frame.

15. The side wall according to claim 13, characterized in that The side wall connected under the second window includes: The second window is connected to the side wall profile, and the top end has a second sunken mounting platform for mounting the window; A top connection portion of the second window lower connecting side wall is located at the top of the second window lower connecting side wall profile and is used for welding and fixing to the second column, the third column and the fourth column; The bottom end connecting portion of the second window lower connecting side wall is located at the bottom end of the second window lower connecting side wall profile and is used for welding and fixing with the second window lower mounting side wall; The middle connecting portion of the second window lower connecting side wall is located on the inner wall surface of the second window lower connecting side wall profile and is used for installing vehicle interior decoration.

16. The side wall according to claim 15, characterized in that The second window lower connecting side wall profile includes: Two second windows arranged at intervals are connected to the side wall profile panels; A plurality of second horizontal reinforcing ribs are arranged vertically between the two second window lower connecting side wall profile plates, and both ends are welded and fixed to the second window lower connecting side wall profile plates to form a plurality of rectangular hollow cavities; and / or, a second vertical reinforcing rib plate vertically penetrates a plurality of said second horizontal reinforcing rib plates and is fixed by welding; and / or, a plurality of second oblique ribs, wherein the second oblique ribs divide the inner cavity connected to the side wall profile plate under the second window into a plurality of polygons.

17. The side wall according to claim 1, characterized in that The third column comprises: a third column profile plate and a third column connecting profile, wherein the third column connecting profile is respectively located at both ends of the third column profile plate in the longitudinal direction and is used for mounting a vehicle window; The third column profile plate and the third column connecting profile are both rectangular closed profiles, and the third column profile plate has a plurality of third oblique rib plates therein.

18. A train body, comprising a roof and an underframe, wherein the side walls according to any one of claims 1 to 17 are provided between the left and right sides of the roof and the underframe.

19. A train, characterized in that: Including the train body according to claim 18.

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