High flatness side wall structure

Abstract

The present invention provides a side wall structure with high flatness, which includes a door frame assembly, a side wall skeleton and a side wall panel. The side wall skeleton includes side columns, longitudinal beams, main connecting plates and auxiliary beams. The side columns extend in the up and down direction; the longitudinal beams extend along the vehicle body direction, the longitudinal beams are inserted and matched with the side columns, and the inner side surfaces of the longitudinal beams are flush with the inner side surfaces of the side columns; the main connecting plates are attached to the inner side surfaces of the side columns and the longitudinal beams and are respectively connected to the side columns and the longitudinal beams; the auxiliary beams are arranged between two adjacent longitudinal beams in parallel with the longitudinal beams and penetrate through the side columns. In the side wall structure with high flatness provided by the present invention, the side columns and the longitudinal beams are connected by an inserted structure, and the auxiliary beams penetrate through the side columns and are connected to the side columns. The above components form the side wall skeleton as a whole, and the structure assembly is simple and convenient, reducing the welding amount between the side wall skeleton and the side wall panel, effectively improving the assembly efficiency of the rail vehicle, and at the same time improving the overall flatness of the side wall panel and enhancing the external aesthetics of the vehicle body.

Description

Technical Field

[0001] The present invention belongs to the technical field of side wall structures, and more specifically, relates to a side wall structure with high flatness. Background Art

[0002] In addition to meeting the conventional functional requirements, rail vehicles also have high flatness appearance requirements for the vehicle body components. Among the vehicle body components, the side wall is the component with the largest plate width in the vehicle body, and its flatness directly affects the appearance flatness of the entire vehicle body side wall. In the existing side wall structures, two adjacent side columns are generally connected by a longitudinal beam disconnection structure. There are many interface positions between the longitudinal beam disconnection structure and the side columns, resulting in problems such as a large amount of welding and difficulty in controlling welding deformation, making it difficult to ensure the flatness of the side wall. At the same time, due to the variety of specifications of the longitudinal beam disconnection structure, it is easy to cause material chaos and incorrect use, which is inconvenient for material management, ultimately resulting in low installation efficiency of the side wall and consuming a large amount of manpower and material resources. Summary of the Invention

[0003] The purpose of the present invention is to provide a side wall structure with high flatness, which adopts a structure where the longitudinal beam penetrates through the side column, improving the flatness of the side wall, enhancing the installation efficiency, and reducing the labor cost.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a side wall structure with high flatness, including a door frame assembly, a side wall skeleton connected to one side of the door frame assembly, and a side wall panel attached to the outer side of the side wall skeleton. The side wall skeleton includes:

[0005] Side columns, extending in the up and down direction;

[0006] Longitudinal beams, extending along the vehicle body direction. The longitudinal beams are inserted and matched with the side columns, and the inner side surfaces of the longitudinal beams are flush with the inner side surfaces of the side columns;

[0007] Main connection plates, attached to the inner side surfaces of the side columns and the longitudinal beams, and respectively connected to the side columns and the longitudinal beams;

[0008] Auxiliary beams, arranged between two adjacent longitudinal beams in parallel and penetrating through the side columns.

[0009] In a possible implementation manner, the longitudinal beams, side columns, and auxiliary beams are respectively Z-shaped steel. The side columns include:

[0010] First connection wing plates, attached to the inner wall of the side wall panel in the up and down direction;

[0011] First intermediate webs, perpendicularly connected to one side edge of the first connection wing plates and extending towards the inside of the vehicle body;

[0012] The first inner wing plate is connected to the edge of the first intermediate web plate perpendicular to the plate surface of the first intermediate web plate. The first inner wing plate and the first connecting wing plate are respectively located on both sides of the first intermediate web plate;

[0013] The longitudinal beam includes:

[0014] The second connecting wing plate is attached and connected to the inner wall of the side wall panel along the vehicle body direction;

[0015] The second intermediate web plate is connected to the lower edge of the second connecting wing plate perpendicular to the plate surface of the second connecting wing plate and extends towards the inner side of the vehicle body;

[0016] The second inner wing plate is connected to the lower part of the second intermediate web plate perpendicular to the plate surface of the second intermediate web plate;

[0017] Wherein, a first insertion slot is provided on the side column, and a second insertion slot that is in insertion fit with the first insertion slot is provided on the longitudinal beam. The first insertion slot includes a first slot provided on the first connecting wing plate to avoid the second connecting wing plate, and a second slot provided on the first intermediate web plate and extending towards the inner side of the vehicle body to avoid the second intermediate web plate. The first slot and the second slot are communicated with each other;

[0018] The second insertion slot includes a third slot provided on the second inner wing plate to avoid the first inner wing plate, and a fourth slot provided on the second intermediate web plate and extending towards the outer side of the vehicle body to avoid the first intermediate web plate. The third slot and the fourth slot are communicated with each other;

[0019] When the longitudinal beam and the side column are in an inserted state, the plate surfaces of the second inner wing plate and the first inner wing plate close to the inner side of the vehicle body are flush with each other.

[0020] In some embodiments, the main connecting plate includes four main extending portions extending radially outward therefrom. The included angle between two adjacent main extending portions is a right angle. Two of the main extending portions are connected to the longitudinal beam, and the other two main extending portions are connected to the side column.

[0021] In a possible implementation manner, the auxiliary beam includes:

[0022] The third connecting wing plate is attached and connected to the inner wall of the side wall panel along the vehicle body direction;

[0023] The third intermediate web plate is connected to the lower edge of the third connecting wing plate perpendicular to the plate surface of the third connecting wing plate and extends towards the inner side of the vehicle body;

[0024] The third inner wing plate is connected to the lower part of the third intermediate web plate perpendicular to the plate surface of the third intermediate web plate;

[0025] Wherein, a through slot through which the auxiliary beam passes is provided on the side column. The through slot is provided on the first connecting wing plate and the first intermediate web plate, and the third inner wing plate is connected to the inner wall of the through slot.

[0026] In a possible implementation, the door frame assembly is connected to the side wall panel through a connecting seat. The connecting seat is connected to the side part of the door frame assembly. The connecting seat has a connecting part connected to the inner wall of the side wall panel. A splicing decorative panel that abuts against the side wall panel is attached to the outer side of the door frame assembly.

[0027] In some embodiments, the connecting assembly further includes a plurality of connecting braces disposed between the door frame assembly and the side column. The connecting braces extend along the vehicle body direction, and both ends of the connecting braces are respectively connected to the door frame assembly and the side column.

[0028] In a possible implementation, the door frame assembly includes:

[0029] Two door posts, extending respectively in the up and down directions;

[0030] An upper cross beam, with both ends respectively connected to the upper ends of the two door posts. The upper cross beam has a concave cavity with an upward opening and penetrating along the extension direction of the upper cross beam;

[0031] An upper cover plate, closing the upper opening of the concave cavity and respectively connected to the upper cross beam and the door posts;

[0032] Wherein, a horizontally extending partition plate is further disposed in the concave cavity, and both ends of the partition plate are respectively connected to the two door posts; in the up and down direction, the partition plate is located in the middle of the concave cavity.

[0033] In some embodiments, mounting holes are provided on the side wall of the door post, and a reinforcing plate is lined inside the door post. A protruding portion is provided on the outer side surface of the reinforcing plate and is configured to be embedded in the mounting hole, and the outer wall of the protruding portion is flush with the outer wall of the door post.

[0034] In a possible implementation, there are four longitudinal beams. Two of the longitudinal beams are respectively disposed near the upper edge and the lower edge of the window, and the other two longitudinal beams are near the upper edge and the lower edge of the vehicle body;

[0035] Wherein, the longitudinal beams disposed near the upper edge and the lower edge of the window are connected to the side column through an auxiliary connecting plate. The auxiliary connecting plate has an auxiliary extending portion extending downward and connected to the side column.

[0036] Compared with the prior art, in the solution shown in the embodiments of the present application, for the high flatness side wall structure provided by the embodiments of the present application, the side column and the longitudinal beam are connected by a plug-in structure. The auxiliary beam penetrates through the side column and is connected to the side column. The above components integrally form a side wall skeleton, and the structure assembly is simple and convenient, reducing the welding amount between the side wall skeleton and the side wall panel, effectively improving the assembly efficiency of the rail vehicle, and at the same time improving the overall flatness of the side wall panel and enhancing the external aesthetics of the vehicle body.

[0037] The present invention also provides a rail vehicle, which includes a side wall structure with high flatness. The side posts and longitudinal beams of the above-mentioned rail vehicle are connected in cooperation through a plug-in structure, and the auxiliary beam penetrates through the side posts and is connected to the side posts. The above-mentioned components integrally form a side wall skeleton, which is simple and convenient for structural assembly, reduces the welding amount between the side wall skeleton and the side wall panel, effectively improves the assembly efficiency of the rail vehicle, and at the same time improves the overall flatness of the side wall panel and enhances the external aesthetics of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a rear view structural schematic diagram of the high-flatness side wall structure provided by the embodiment of the present invention;

[0040] Figure 2 For an embodiment of the present invention Figure 1 A structural schematic diagram from another angle;

[0041] Figure 3 For an embodiment of the present invention Figure 2 A partial enlarged structural schematic diagram of I in the embodiment;

[0042] Figure 4 For an embodiment of the present invention Figure 2 A partial enlarged structural schematic diagram of II in the embodiment;

[0043] Figure 5 For an embodiment of the present invention Figure 1 A structural schematic diagram of the side post, longitudinal beam and auxiliary beam in the embodiment;

[0044] Figure 6 For an embodiment of the present invention Figure 5 An exploded structural schematic diagram from another angle;

[0045] Figure 7 For an embodiment of the present invention Figure 1 A partial structural schematic diagram of the side post in the embodiment;

[0046] Figure 8 For an embodiment of the present invention Figure 5 A structural schematic diagram of the longitudinal beam from another angle in the embodiment;

[0047] Figure 9 For an embodiment of the present invention Figure 5 A structural schematic diagram of the auxiliary beam from another angle in the embodiment;

[0048] Figure 10 Schematic structural view of the doorframe assembly in an embodiment of the present invention Figure 1

[0049] Figure 11 Schematic top cross-sectional view of the doorpost and the reinforcement plate in an embodiment of the present invention Figure 10

[0050] Figure 12 Schematic top view of the doorpost, the side wall panel and the side wall frame in an embodiment of the present invention Figure 1

[0051] Figure 13 Schematic enlarged partial view of III in an embodiment of the present invention Figure 12

[0052] Among them, the reference numerals in the figures are as follows:

[0053] 1, doorframe assembly; 11, doorpost; 111, mounting hole; 12, upper crossbeam; 121, concave cavity; 13, upper cover plate; 14, partition board; 15, reinforcement plate; 151, convex portion; 2, side wall frame; 3, side wall panel; 4, side column; 41, first connecting wing plate; 42, first intermediate web; 43, first inner wing plate; 44, first insertion slot; 45, first groove; 46, second groove; 47, through groove; 48, connecting brace; 5, longitudinal beam; 51, second connecting wing plate; 52, second intermediate web; 53, second inner wing plate; 54, second insertion slot; 55, third groove; 56, fourth groove; 6, auxiliary beam; 61, third connecting wing plate; 62, third intermediate web; 63, third inner wing plate; 7, main connecting plate; 71, main extension portion; 72, auxiliary connecting plate; 73, auxiliary extension portion; 8, connecting seat; 81, connecting portion; 82, splicing decorative plate; 91, window. Detailed implementation manners

[0054] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0055] ​​​​It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise specifically defined.

[0056] Please refer to Figures 1 to 13 , and now the high-flatness side wall structure provided by the present invention will be described. The high-flatness side wall structure includes a door frame assembly 1, a side wall skeleton 2 connected to one side of the door frame assembly 1, and a side wall panel 3 attached to the outer side of the side wall skeleton 2. The side wall skeleton 2 includes side columns 4, longitudinal beams 5, main connection plates 7, and auxiliary beams 6. The side columns 4 extend in the up and down direction; the longitudinal beams 5 extend along the vehicle body direction, the longitudinal beams 5 are inserted and matched with the side columns 4, and the inner side surfaces of the longitudinal beams 5 are flush with the inner side surfaces of the side columns 4; the main connection plates 7 are attached to the inner side surfaces of the side columns 4 and the longitudinal beams 5 and are respectively connected to the side columns 4 and the longitudinal beams 5; the auxiliary beams 6 are arranged between adjacent two longitudinal beams 5 in parallel with the longitudinal beams 5 and penetrate through the side columns 4.

[0057] Compared with the prior art, in the high-flatness side wall structure provided by this embodiment, the side columns 4 and the longitudinal beams 5 are connected by an inserted structure, and the auxiliary beams 6 penetrate through the side columns 4 and are connected to the side columns 4. The above components integrally form the side wall skeleton 2. The structure assembly is simple and convenient, reducing the welding amount between the side wall skeleton 2 and the side wall panel 3, effectively improving the assembly efficiency of the rail vehicle, and at the same time improving the overall flatness of the side wall panel 3 and enhancing the external aesthetics of the vehicle body.

[0058] In this embodiment, a longitudinal beam 5 that is arranged longitudinally along the length direction of the carriage is inserted and fitted with a side column 4. By means of the structural reinforcement of key parts such as the window 91 and the upper and lower edges of the side wall by the longitudinal beam 5, the longitudinal arrangement of the longitudinal beam 5 reduces the types of material specifications, facilitating on-site management. The side wall skeleton 2 and the side wall panel 3 are connected by connectors. After the longitudinal beam 5 and the side column 4 are inserted and fitted, plug welding connection is carried out by means of a main connecting plate 7 arranged on the inner sides of the two, avoiding the problem that welding at the position of the side wall panel 3 affects the flatness of the side wall panel 3. The above connection method can effectively reduce the welding workload, avoid the welding deformation of the side wall panel 3, and at the same time improve the assembly efficiency of the outer wall.

[0059] On this basis, the auxiliary beam 6 adopts an installation form that penetrates the side column 4. The auxiliary beam 6 adopts a segmented structure and can be disconnected in cooperation with the opening positions of components such as the window 91. The auxiliary beam 6 is located on the side of the side column 4 close to the side wall panel 3. The auxiliary beam 6 is welded to the side column 4 by means of fusion welding, and the auxiliary beam 6 and the side wall panel 3 are connected by plug welding. The above structure reduces the heat input of welding, facilitating the improvement of the external flatness of the side wall panel 3.

[0060] In some possible implementation manners, the above-mentioned characteristic side column 4 and longitudinal beam 5 adopt the structure as Figures 5 to 8 shown. Refer to Figures 5 to 8 , the longitudinal beam 5, the side column 4 and the auxiliary beam 6 are respectively Z-shaped steel. The side column 4 includes a first connecting wing plate 41, a first intermediate web plate 42 and a first inner wing plate 43. The first connecting wing plate 41 is attached and connected to the inner wall of the side wall panel 3 in the up and down direction; the first intermediate web plate 42 is perpendicularly connected to one side edge of the first connecting wing plate 41 with respect to the plate surface of the first connecting wing plate 41, and the first intermediate web plate 42 extends towards the inside of the vehicle body; the first inner wing plate 43 is perpendicularly connected to the edge of the first intermediate web plate 42 with respect to the plate surface of the first intermediate web plate 42, and the first inner wing plate 43 and the first connecting wing plate 41 are respectively located on both sides of the first intermediate web plate 42;

[0061] The longitudinal beam 5 includes a second connecting wing plate 51, a second intermediate web plate 52 and a second inner wing plate 53. The second connecting wing plate 51 is attached and connected to the inner wall of the side wall panel 3 along the vehicle body direction; the second intermediate web plate 52 is perpendicularly connected to the lower edge of the second connecting wing plate 51 with respect to the plate surface of the second connecting wing plate 51 and extends towards the inside of the vehicle body; the second inner wing plate 53 is perpendicularly connected to the lower part of the second intermediate web plate 52 with respect to the plate surface of the second intermediate web plate 52;

[0062] Among them, a first insertion slot 44 is provided on the side column 4, and a second insertion slot 54 that is inserted and cooperates with the first insertion slot 44 is provided on the longitudinal beam 5. The first insertion slot 44 includes a first slot 45 provided on the first connecting wing plate 41 to avoid the second connecting wing plate 51, and a second slot 46 provided on the first middle web 42 and extending toward the inside of the vehicle body to avoid the second middle web 52. The first slot 45 is communicated with the second slot 46;

[0063] The second insertion slot 54 includes a third slot 55 provided on the second inner wing plate 53 to avoid the first inner wing plate 43, and a fourth slot 56 provided on the second middle web 52 and extending toward the outside of the vehicle body to avoid the first middle web 42. The third slot 55 is communicated with the fourth slot 56;

[0064] When the longitudinal beam 5 and the side column 4 are in an inserted state, the plate surfaces of the second inner wing plate 53 and the first inner wing plate 43 close to the inside of the vehicle body are flush with each other.

[0065] In this embodiment, both the side column 4 and the longitudinal beam 5 adopt the structural form of Z-shaped steel. The side column 4 is connected to the inner wall of the side wall panel 3 through the first connecting wing plate 41. The first connecting wing plate 41 and the first inner wing plate are respectively located on both sides of the first middle web 42. After the side column 4 and the longitudinal beam 5 are inserted through the cooperation of the first insertion slot 44 and the second insertion slot 54, the first connecting wing plate 41 and the second connecting wing plate 51 are flush with each other and are respectively welded to the side wall panel 3 by plug welding. The third slot 55 provided on the second inner wing plate 53 can effectively avoid the first inner wing plate 43, the first slot 45 on the first connecting wing plate 41 can effectively avoid the second connecting wing plate 51, and the third slot 55 and the fourth slot 56 cooperate with each other to realize the insertion and cooperation of the first middle wing plate and the second middle wing plate, having a good avoidance effect. At the same time, reliable limiting can be formed through the above structure, which is convenient for reliably connecting the side column 4 and the longitudinal beam 5 through column connectors subsequently.

[0066] In some embodiments, referring to Figure 2 and Figure 3 , the main connecting plate 7 includes four main extension parts 71 extending radially outward therefrom. The included angle between two adjacent main extension parts 71 is a right angle. Two of the main extension parts 71 are connected to the longitudinal beam 5, and the other two main extension parts 71 are connected to the side column 4.

[0067] In this embodiment, the side column 4 and the longitudinal beam 5 are arranged in a cross-shaped form. The main extension part 71 is arranged at the intersection position of the side column 4 and the longitudinal beam 5, and can be connected to the longitudinal beam 5 and the side column 4 outside the circumference of the above intersection point respectively by means of the four main extension parts 71. The main connecting plate 7 is welded to the inside of the longitudinal beam 5 and the side beam by plug welding, having reliable welding quality.

[0068] Specifically, plug welding means welding the connecting plate and the first inner wing plate 43 or the connecting plate and the second inner wing plate 53 through fusion welding. If the main connecting plate 7 is relatively thick, tools such as an electric drill can be used to drill holes and then the two can be melted and welded by fusion welding.

[0069] In some possible implementation manners, the above-mentioned feature auxiliary beam 6 adopts a structure as Figures 5 to 7 and Figure 9 shown. Refer to Figures 5 to 7 and Figure 9 , the auxiliary beam 6 includes a third connecting wing plate 61, a third middle web 62 and a third inner wing plate 63. The third connecting wing plate 61 is attached and connected to the inner wall of the side wall panel 3 along the vehicle body direction; the third middle web 62 is perpendicularly connected to the lower edge of the third connecting wing plate 61 and extends towards the inner side of the vehicle body; the third inner wing plate 63 is perpendicularly connected to the lower part of the third middle web 62.

[0070] Wherein, a through groove 47 for the auxiliary beam 6 to pass through is provided on the side column 4. The through groove 47 is arranged on the first connecting wing plate 41 and the first middle web 42, and the third inner wing plate 63 is connected to the inner wall of the through groove 47.

[0071] In this embodiment, the auxiliary beam 6 also adopts the structure of Z-shaped steel. The size of the auxiliary beam 6 is smaller than that of the side column 4, and it can penetrate through the through groove 47 on the side column 4 as a whole. The third connecting wing plate 61 of the auxiliary beam 6 is connected to the side wall panel 3 by plug welding. The third middle web 62 is supported horizontally in the through groove, and the plate surface of the third inner wing plate 63 is in contact and welded with the inner bottom wall of the through groove, ensuring the stability of the relative position between the side column 4 and the auxiliary beam 6. For the convenience of installation, the through groove adopts a right trapezoidal cross-sectional shape. From the inner side to the outer side of the vehicle body, the top wall of the through groove gradually extends upward obliquely, which can fully avoid the auxiliary beam 6 and facilitate the installation of the auxiliary beam 6.

[0072] In some possible implementation manners, the above-mentioned feature connecting assembly adopts a structure as Figure 12 and Figure 13 shown. Refer to Figure 12 and Figure 13 , the door frame assembly 1 is connected to the side wall panel 3 through a connecting seat 8. The connecting seat 8 is connected to the side part of the door frame assembly 1. The connecting seat 8 has a connecting part 81 connected to the inner wall of the side wall panel 3. A splicing decorative plate 82 connected to the side wall panel 3 is attached to the outer side of the door frame assembly 1.

[0073] In this embodiment, when the door frame assembly 1 is connected to the side wall panel 3, in order to facilitate the adjustment of the distance between the two, it is connected to the outer wall panel through the connecting seat 8 connected to the side of the door post 11. The distance between the side wall panel 3 and the door post 11 is adjusted by adjusting the distance between the connecting seat 8 and the side post 4. At the same time, a splicing decorative panel 82 is provided on the outer side of the connecting seat 8, which is convenient for effectively decorating the outer side of the door post 11, realizing an effective connection with the edge of the side wall panel 3, and improving the external aesthetics of the vehicle body.

[0074] In some embodiments, the above-mentioned feature connection assembly can adopt the structure as Figures 2 to 3 shown. Refer to Figures 2 to 3 , the connection assembly further includes a plurality of connection braces 48 arranged between the door frame assembly 1 and the side post 4. The connection braces 48 extend along the vehicle body direction, and both ends of the connection braces 48 are connected to the door frame assembly 1 and the side post 4 respectively. The connection braces 48 are arranged inside the side wall panel 3, which can effectively connect the door post 11 and the longitudinal beam 5, ensure the reliability of the connection between the door frame assembly 1 and the side post 4, and further ensure the structural stability of the entire carriage.

[0075] In some possible implementation manners, the above-mentioned feature door frame assembly 1 adopts the structure as Figure 10 and Figure 12 shown. Refer to Figure Figure 10 and Figure 12 , the door frame assembly 1 includes two door posts 11, an upper cross beam 12 and an upper cover plate 13. The two door posts 11 extend along the up and down directions respectively; both ends of the upper cross beam 12 are connected to the upper ends of the two door posts 11 respectively. The upper cross beam 12 has a concave cavity 121 with an upward opening and penetrating along the extension direction of the upper cross beam 12; the upper cover plate 13 seals the upper opening of the concave cavity 121 and is connected to the upper cross beam 12 and the door post 11 respectively;

[0076] Among them, a horizontally extending partition plate 14 is further provided in the concave cavity 121. Both ends of the partition plate 14 are connected to the two door posts 11 respectively; in the up and down direction, the partition plate 14 is located in the middle of the concave cavity 121.

[0077] In this embodiment, the two side door posts 11 and the top upper cross beam 12 are connected by fillet welds, which is convenient for ensuring the structural stability of the door frame assembly 1 itself. The upper cross beam 12 is a sheet metal formed part with an upward opening. In order to improve the bearing capacity of the upper cross beam 12, an upper cover plate 13 is also sealed at the wound of the concave cavity 121 of the upper cross beam 12, and the upper cover plate 13 and the upper cross beam 12 are connected by HV welds. At the same time, a partition plate 14 is added in the concave cavity 121, and both ends of the partition plate 14 are welded to the two side door posts 11 by fillet welds, which is convenient for forming an integral closed structure and improving the overall strength of the structure.

[0078] In some embodiments, the above-mentioned feature door post 11 can adopt the structure as Figure 10 andFigure 11 The structure shown. Refer to Figure 10 and Figure 11 , mounting holes 111 are provided on the side wall of the door post 11, a reinforcing plate 15 is lined inside the door post 11, and a protruding portion 151 is provided on the outer side plate surface of the reinforcing plate 15 and is configured to be embedded in the mounting hole 111, and the outer wall of the protruding portion 151 is flush with the outer wall of the door post 11.

[0079] In this embodiment, the door post 11 is a closed cold-formed structure. Cold-formed steel sections are divided into open and closed types. Open cold-formed steel sections include equal-angle and unequal-angle steel bars, inside-rolled-edge and outside-rolled-edge angle steel bars, equal-channel and unequal-channel steel bars, inside-rolled-edge or outside-rolled-edge channel steel bars, Z-shaped steel bars, rolled-edge Z-shaped steel bars, special-shaped open steel bars, etc. Closed cold-formed steel sections are cold-formed steel sections with a closed cross-section formed by welding, and according to the shape, there are circular, square, rectangular, and special-shaped ones. The door post 11 is a structure with a polygonal cross-section closed, and it is a closed cold-formed steel section.

[0080] The door post 11 is also provided with a mounting portion for mounting an armrest. A square hole is opened at this portion, and the reinforcing plate 15 is used to strengthen the structure at this position. The protruding portion 151 on the reinforcing plate 15 blocks the square hole. The entire reinforcing plate 15 is a stepped structure. The outer wall surface of the protruding portion 151 is flush with the outer surface of the door post 11. The reinforcing plate 15 is welded and connected to the inner side of the door post 11 and is connected to the door post 11 through an HV weld, providing a reliable mounting position for the armrest.

[0081] In some possible implementation manners, the above-mentioned longitudinal beam 5 adopts the structure as shown in Figure 1 and Figure 2 . Refer to Figure 1 and Figure 2 , there are four longitudinal beams 5. Two of the longitudinal beams 5 are respectively arranged near the upper edge and the lower edge of the window 91, and the other two longitudinal beams 5 are arranged near the upper edge and the lower edge of the vehicle body; among them, the longitudinal beams 5 arranged near the upper edge and the lower edge of the window 91 are connected to the side column 4 through an auxiliary connecting plate 72, and the auxiliary connecting plate 72 has an auxiliary extending portion 73 that extends downward and is connected to the side column 4.

[0082] In this embodiment, the longitudinal beam 5 extends along the vehicle body direction and covers the entire length of the carriage. The longitudinal beam 5 is mainly distributed at positions near the upper edge and the lower edge of the side wall panel 3 to ensure the structural strength of the corresponding positions of the side wall panel 3. In addition, the longitudinal beam 5 is also distributed at the upper edge and the lower edge positions of the window 91 to strengthen the structure of the window 91 part and avoid the strength attenuation caused by opening the window 91. The auxiliary beam 6 is arranged between two adjacent side columns 4 to strengthen the structure at the part where the longitudinal beam 5 is not arranged in the up and down direction of the vehicle body.

[0083] For the part close to the window 91, since the side column 4 has a disconnected structure, an auxiliary connecting plate 72 is provided here. The auxiliary connecting plate 72 has a T-shaped structure and is connected to the side column 4 above or below the window 91 through an auxiliary extension part 73 extending in the up and down directions, ensuring the reliability of the connection between the side column 4 and the longitudinal beam 5.

[0084] Based on the same inventive concept, the embodiment of the present application further provides a rail vehicle, which includes a side wall structure with high flatness. The side column 4 and the longitudinal beam 5 of the above rail vehicle are connected in a matching manner through a plug-in structure. The auxiliary beam 6 penetrates the side column 4 and is connected to the side column 4. The above components together form the side wall skeleton 2. The structure assembly is simple and convenient, reducing the welding amount between the side wall skeleton 2 and the side wall panel 3, effectively improving the assembly efficiency of the rail vehicle, and at the same time improving the overall flatness of the side wall panel 3 and enhancing the external aesthetics of the vehicle body.

[0085] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. High flatness side wall structure, Characterized in that, It includes a door frame assembly, a side wall skeleton connected to one side of the door frame assembly, and a side wall panel attached to the outer side of the side wall skeleton. The side wall skeleton includes: Side columns, extending in the up and down direction; Longitudinal beams, extending along the vehicle body direction. The longitudinal beams are inserted and cooperated with the side columns, and the inner side surfaces of the longitudinal beams are flush with the inner side surfaces of the side columns; Main connection plates, attached to the inner side surfaces of the side columns and the longitudinal beams, and respectively connected to the side columns and the longitudinal beams; Auxiliary beams, arranged parallel to the longitudinal beams between adjacent two longitudinal beams, and penetrating through the side columns; The longitudinal beams, the side columns and the auxiliary beams are respectively Z-shaped steels. The side columns include: First connection wing plates, attached to the inner wall of the side wall panel along the up and down direction; First intermediate webs, perpendicularly connected to one side edge of the first connection wing plates with respect to the plate surfaces of the first connection wing plates, and the first intermediate webs extend towards the inner side of the vehicle body; First inner wing plates, perpendicularly connected to the edges of the first intermediate webs with respect to the plate surfaces of the first intermediate webs, and the first inner wing plates and the first connection wing plates are respectively located on both sides of the first intermediate webs; The longitudinal beams include: Second connection wing plates, attached to the inner wall of the side wall panel along the vehicle body direction; Second intermediate webs, perpendicularly connected to the lower edge of the second connection wing plates with respect to the plate surfaces of the second connection wing plates, and extending towards the inner side of the vehicle body; Second inner wing plates, perpendicularly connected below the second intermediate webs with respect to the plate surfaces of the second intermediate webs; Wherein, a first insertion slot is provided on the side column, and a second insertion slot inserted and cooperated with the first insertion slot is provided on the longitudinal beam. The first insertion slot includes a first slot provided on the first connection wing plate to avoid the second connection wing plate, and a second slot provided on the first intermediate web and extending towards the inner side of the vehicle body to avoid the second intermediate web. The first slot is communicated with the second slot; The second insertion slot includes a third slot provided on the second inner wing plate to avoid the first inner wing plate, and a fourth slot provided on the second intermediate web and extending towards the outer side of the vehicle body to avoid the first intermediate web. The third slot is communicated with the fourth slot; When the longitudinal beam and the side column are in an inserted state, the plate surfaces of the second inner wing plate and the first inner wing plate close to the inner side of the vehicle body are flush with each other.

2. The high flatness side wall structure according to claim 1, Characterized in that, The main connection plate includes four main extension parts extending radially outwards therefrom. The angle between adjacent two main extension parts is a right angle. Two of the main extension parts are connected to the longitudinal beam, and the other two main extension parts are connected to the side column.

3. The high flatness side wall structure according to claim 1, Characterized in that, The auxiliary beam includes: Third connection wing plates, attached to the inner wall of the side wall panel along the vehicle body direction; Third intermediate webs, perpendicularly connected to the lower edge of the third connection wing plates with respect to the plate surfaces of the third connection wing plates, and extending towards the inner side of the vehicle body; The third inner wing plate is connected below the third middle web plate perpendicular to the plate surface of the third middle web plate; Wherein, a through groove for the auxiliary beam to pass through is provided on the side column and penetrates through the auxiliary beam, and the through groove is arranged on the first connecting wing plate and the first middle web plate, and the third inner wing plate is connected to the inner wall of the through groove.

4. The high-flatness side wall structure according to any one of claims 1-3, characterized in that, The door frame assembly is connected to the side wall panel through a connecting seat, the connecting seat is connected to the side part of the door frame assembly, the connecting seat has a connecting part connected to the inner wall of the side wall panel, and a splicing decorative plate that is in contact with the side wall panel is attached to the outer side of the door frame assembly.

5. The high-flatness side wall structure according to claim 4, characterized in that, It further includes a plurality of connecting braces arranged between the door frame assembly and the side column, the connecting braces extend along the vehicle body direction, and both ends of the connecting braces are respectively connected to the door frame assembly and the side column.

6. The high-flatness side wall structure according to any one of claims 1-3, characterized in that, The door frame assembly includes: Two door posts, respectively extending in the up and down directions; An upper cross beam, both ends of which are respectively connected to the upper ends of the two door posts, and the upper cross beam has a concave cavity with an upward opening and penetrating along the extending direction of the upper cross beam; An upper cover plate, closing the upper opening of the concave cavity and respectively connected to the upper cross beam and the door post; Wherein, a horizontally extending partition is further arranged in the concave cavity, and both ends of the partition are respectively connected to the two door posts; in the up and down direction, the partition is located in the middle of the concave cavity.

7. The high-flatness side wall structure according to claim 6, characterized in that, Mounting holes are provided on the side wall of the door post, and a reinforcing plate is lined inside the door post. A convex portion protruding to be fitted into the mounting hole is provided on the outer plate surface of the reinforcing plate, and the outer wall of the convex portion is flush with the outer wall of the door post.

8. The high-flatness side wall structure according to any one of claims 1-3, characterized in that, There are four longitudinal beams, two of the longitudinal beams are respectively arranged near the upper edge and the lower edge of the window, and the other two longitudinal beams are arranged near the upper edge and the lower edge of the vehicle body; Wherein, the longitudinal beams arranged near the upper edge and the lower edge of the window are connected to the side column through an auxiliary connecting plate, and the auxiliary connecting plate has an auxiliary extending portion extending downward and connected to the side column.

9. A rail vehicle, characterized in that, The rail vehicle includes the high-flatness side wall structure according to any one of claims 1-8.

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