Side wall structure and rail vehicle

Abstract

The invention relates to the technical field of locomotives, and particularly discloses a side wall structure and a railway vehicle, the side wall structure comprises a welding frame and an inner wall plate, the welding frame comprises upper beam connectors, a plurality of stand columns, a cross beam and a lower edge beam, the lower ends of the plurality of stand columns are all connected with the lower edge beam in a welded mode, and the upper beam connectors are connected with the cross beam in a welded mode. The upper ends of the multiple stand columns are welded to the multiple upper beam connectors in a one-to-one correspondence mode, the multiple cross beams are perpendicular to the stand columns and are welded to the stand columns, the multiple cross beams are arranged in the height direction of the stand columns at intervals, and the inner wall plates are connected with the sides, away from the stand columns, of the cross beams in a laser welding mode. The upper beam connector, the stand column, the cross beam and the lower edge beam are welded to form the welding frame, and the inner wall plate is connected with the side, away from the stand column, of the cross beam in a laser welding mode, so that the flatness after the inner wall plate and the cross beam are welded is guaranteed, meanwhile, the side wall structure is structurally optimized, and the number of welding seams of laser welding is reduced; and meanwhile, the process difficulty and the requirement for a tool mold are reduced.

Description

Technical Field

[0001] This invention relates to the field of locomotive technology, and more particularly to a sidewall structure and a rail vehicle. Background Technology

[0002] As the main exterior surface of a rail vehicle, the sidewall structure needs to have a certain degree of flatness and aesthetics. The sidewall structure in related technologies includes sidewall panels, corrugated plates, and a sidewall frame, where the frame is formed by welding columns, upper sidewall beams, and lower sidewall beams. To ensure flatness, all welding of exterior components requires laser welding, and consequently, laser welding is used between the sidewall panels, corrugated plates, and sidewall frame. However, laser welding has high requirements for the flatness of the workpiece and is more complex than traditional welding processes, requiring more tooling and molds. Summary of the Invention

[0003] The purpose of this invention is to provide a sidewall structure and rail vehicle that reduces the number of welds in laser welding, while also reducing the difficulty of the process and the need for tooling and molds.

[0004] This invention provides a sidewall structure, comprising:

[0005] The system comprises a welded frame and an inner wall panel. The welded frame includes an upper beam joint, columns, crossbeams, and a lower side beam. Multiple columns are provided, and the lower ends of each column are welded to the lower side beam. Multiple upper beam joints are provided, each corresponding to one of the columns. The upper ends of each column are welded to the upper beam joints. Multiple crossbeams are provided, perpendicular to the columns and welded to them. These crossbeams are spaced apart along the height of the columns. The inner wall panel is laser-welded to the side of the crossbeam facing away from the columns.

[0006] As a preferred technical solution for the side wall structure, the lower beam is a Z-shaped beam, which includes an upper flange and a lower flange. The column is welded to the upper flange, and the lower end of the inner wall panel is laser-welded to the lower flange.

[0007] As a preferred technical solution for the side wall structure, the weld between the inner wall panel and the crossbeam extends along the length direction of the crossbeam, and the weld between the inner wall panel and the lower flange extends along the length direction of the lower side beam.

[0008] As a preferred technical solution for the side wall structure, the surface of the inner wall panel is brushed, and the brushing direction is the extension direction of the laser weld on the inner wall panel.

[0009] As a preferred technical solution for the side wall structure, the lower end of the column is plug-welded to the upper wing plate, the upper end of the column is spot-welded to the upper beam joint, and the column is arc-welded to the crossbeam.

[0010] As a preferred technical solution for the side wall structure, both the column and the beam are U-shaped beams. The top plate of the column is plug-welded to the upper flange, the two outward flaps of the column are arc-welded to the top plate of the beam, and the two outward flaps of the beam are laser-welded to the inner wall panel.

[0011] As a preferred technical solution for the side wall structure, the side wall structure includes a high-section side wall and a low-section side wall. The height of the high-section side wall is less than the height of the low-section side wall. The upper flange of the lower beam of the high-section side wall extends toward the low-section side wall and is welded to the plunger of the low-section side wall near the high-section side wall.

[0012] As a preferred technical solution for the side wall structure, the column of the high-zone side wall near the low-zone side wall and the column of the low-zone side wall near the high-zone side wall are welded together by a connecting plate.

[0013] As a preferred technical solution for the side wall structure, the lower beam of the low-section side wall extends toward the high-section side wall and is laser-welded to the inner wall panel.

[0014] The present invention provides a rail vehicle including a sidewall structure of any of the above-described embodiments.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention provides a side wall structure in which a welded frame is formed by welding an upper beam joint, a column, a crossbeam, and a lower side beam. The inner wall panel is then laser-welded to the side of the crossbeam away from the column. This design optimizes the side wall structure while ensuring the flatness of the inner wall panel after welding to the crossbeam. It also reduces the number of laser welding welds, lowers the process difficulty, and reduces the need for tooling and molds. Attached Figure Description

[0017] Figure 1 This is a plan view of the side wall structure in an embodiment of the present invention;

[0018] Figure 2 This is a plan view of the low-section sidewall structure in an embodiment of the present invention;

[0019] Figure 3 This is a plan view of the connection position between the high-zone sidewall and the low-zone sidewall in an embodiment of the present invention;

[0020] Figure 4This is a schematic diagram of the structure at the connection point between the high-zone sidewall and the low-zone sidewall in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the weld distribution of the side wall structure in an embodiment of the present invention.

[0022] In the picture:

[0023] 100, High-zone sidewall; 200, Low-zone sidewall;

[0024] 1. Top beam joint; 2. Column; 21. Connecting plate; 3. Horizontal beam; 4. Bottom beam; 41. Top flange; 42. Bottom flange; 5. Interior wall panel. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figures 1-5 As shown, this embodiment of the invention provides a sidewall structure applied to rail vehicles. Each car of the rail vehicle includes two sidewall structures, serving as the left and right side walls inside the car. In this embodiment, the left and right side structures are identical, therefore, one side will be described in detail. The sidewall structure includes a welded frame and an inner wall panel 5. The welded frame includes an upper beam joint 1, columns 2, crossbeams 3, and a lower side beam 4. The upper beam joints 1 of the two sidewall structures are respectively connected to both ends of the top cover beam, thereby connecting the two sidewall structures to the top cover. Multiple columns 2 are provided, and the lower ends of the multiple columns 2 are welded to the lower side beam 4. Multiple upper beam joints 1 are provided and correspond one-to-one with the multiple columns 2, and the upper ends of the multiple columns 2 are welded to the multiple upper beam joints 1 one-to-one. The crossbeams 3 are perpendicular to the columns 2 and welded to the columns 2. Multiple crossbeams 3 are provided and spaced apart along the height direction of the columns 2. The inner wall panel 5 is laser-welded to the side of the crossbeams 3 facing away from the columns 2. In this embodiment, both the crossbeam 3 and the lower side beam 4 extend along the vehicle length direction, and the column 2 extends along the vehicle height direction, with the crossbeam 3 and the lower side beam 4 arranged parallel to each other. A welded frame is formed by welding the upper beam joint 1, the column 2, the crossbeam 3, and the lower side beam 4. The inner wall panel 5 is then laser-welded to the side of the crossbeam 3 away from the column 2. This ensures the flatness of the inner wall panel 5 after welding with the crossbeam 3, while optimizing the side wall structure, reducing the number of laser welding welds, and lowering the process difficulty and the need for tooling and molds.

[0030] Furthermore, such as Figures 4-5 As shown, the lower beam 4 is a type B beam, which includes an upper flange 41 and a lower flange 42. The upper flange 41 and the lower flange 42 are parallel to each other along the vehicle width, and the upper flange 41 is located on the side closer to the outside of the vehicle. The column 2 is welded to the upper flange 41, and the lower end of the inner wall panel 5 is laser-welded to the lower flange 42. Setting the lower beam 4 as a type B beam and laser-welding the lower end of the inner wall panel 5 to the lower flange 42 further improves the flatness of the inner wall panel 5.

[0031] Specifically, please refer to Figure 5As shown, the weld between the inner wall panel 5 and the crossbeam 3 extends along the length of the crossbeam 3, and the weld between the inner wall panel 5 and the lower flange 42 extends along the length of the lower side beam 4. That is, all laser welds on the inner wall panel 5 extend along the vehicle's length. This arrangement ensures that all laser welds on the inner wall panel 5 extend in the same direction, which is beneficial for improving the flatness and appearance quality of the inner wall panel 5 after welding. Furthermore, the laser welds on the inner wall panel 5 are intermittently arranged to avoid the accumulation of welding stress and deformation that could lead to a decrease in the flatness of the inner wall panel 5.

[0032] Optionally, the surface of the inner wall panel 5 is brushed, and the brushing direction is the extension direction of the laser weld on the inner wall panel 5, that is, the brushing direction is the machining length direction. By brushing the surface of the inner wall panel 5, and the brushing direction is along the extension direction of the laser weld, the adverse effects of the laser weld on the flatness and appearance quality of the inner wall panel 5 are further eliminated, and the visual effect of the welded inner wall panel 5 is improved.

[0033] Specifically, the lower end of column 2 is plug-welded to the upper flange 41, the upper end of column 2 is spot-welded to the upper beam joint 1, and column 2 is arc-welded to the crossbeam 3. Welding joints on non-exposed parts using traditional arc welding or resistance welding processes reduces welding costs and difficulty while ensuring the structural strength of the welded joints meets relevant requirements. The above welding method is determined by the structure of this embodiment, but it should not be limited to it. For example, in other embodiments, the column 2 and crossbeam 3 can be plug-welded, and the column 2 and upper flange 41 can be arc-welded, etc., only requiring corresponding modifications to the local structure to meet the joint requirements of the corresponding welding process.

[0034] Specifically, both column 2 and beam 3 are U-shaped beams. The top plate of column 2 is plug-welded to the upper flange 41, and both outward-facing plates of column 2 are arc-welded to the top plate of beam 3. Both outward-facing plates of beam 3 are laser-welded to the inner wall panel 5, resulting in two welds between each beam 3 and the inner wall panel 5. The two webs of beam 3 are angled, with the distance between the ends of the two webs connected to the two outward-facing plates being greater than the distance between the ends connected to the top plate. That is, the two webs of beam 3 are approximately arranged in a "V" shape to increase the distance between the two outward-facing plates of beam 3, thereby increasing the interval between the two welds on the inner wall panel 5 and avoiding a decrease in local flatness caused by excessively dense welds.

[0035] Specifically, in this embodiment, the inner wall panel 5 is made of SUS301L-HT stainless steel plate with a thickness of 2mm. The crossbeam 3 is made of SUS301L-HT stainless steel plate with a thickness of 0.8mm, bent into shape. The column 2 is made of SUS301L-HT stainless steel plate with a thickness of 1.5mm, bent into shape. The lower beam 4 is made of SUS301L-DLT stainless steel plate with a thickness of 4mm, bent into shape. During the welding process, the inner wall panel 5 is first placed on the corresponding side wall fixture, then the crossbeam 3 and the lower beam 4 are placed on the inner wall panel 5 for laser welding, and finally the column 2 is placed on the crossbeam 3 and welded to the crossbeam 3 and the lower beam 4. The entire process only requires the use of the side wall fixture once, reducing the number of fixtures and the complexity of the process.

[0036] Furthermore, such as Figure 3 As shown, the sidewall structure in this embodiment includes a high-section sidewall 100 and a low-section sidewall 200. The high-section sidewall 100 and the low-section sidewall 200 correspond to the high-floor area and the low-floor area of ​​the rail vehicle, respectively. Since the horizontal height of the high-floor area is higher than that of the low-floor area, the height of the high-section sidewall 100 is less than the height of the low-section sidewall 200. To achieve the connection between the high-section sidewall 100 and the low-section sidewall 200 and ensure the integrity and continuity of the sidewall structure, the upper flange 41 of the lower beam 4 of the high-section sidewall 100 extends toward the low-section sidewall 200 and is plug-welded to the column 2 of the low-section sidewall 200 near the high-section sidewall 100 to ensure the structural strength of the sidewall structure in the vehicle length direction.

[0037] Specifically, please continue to refer to Figure 3 As shown, the column 2 on the side of the high-section sidewall 100 closest to the low-section sidewall 200 and the column 2 on the side of the low-section sidewall 200 closest to the high-section sidewall 100 are welded together by a connecting plate 21. The connecting plate 21 is located on the side of the column 2 away from the crossbeam 3, and both ends of the connecting plate 21 are respectively plug-welded to the corresponding columns 2 of the high-section sidewall 100 and the low-section sidewall 200, thereby realizing the welded connection between two adjacent columns 2 of the high-section sidewall 100 and the low-section sidewall 200, thereby further improving the structural strength of the sidewall structure in the vehicle length direction.

[0038] Alternatively, please continue to refer to Figure 3 As shown, the lower beam 4 of the low-section side wall 200 extends toward the high-section side wall 100 and is laser-welded to the inner wall panel 5 to increase the support of the inner wall panel 5 between the high-section side wall 100 and the low-section side wall 200, and further improve the overall flatness of the inner wall panel 5.

[0039] This invention provides a rail vehicle, including the sidewall structure described in this embodiment. The rail vehicle is preferably a rail vehicle with a high-low floor structure.

[0040] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

[0041] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A sidewall structure, characterized in that, include: The welding frame and the inner wall panel (5) are welded together. The welding frame includes an upper beam joint (1), a column (2), a crossbeam (3) and a lower side beam (4). The column (2) is set in multiples. The lower ends of the multiple columns (2) are welded to the lower side beam (4). The upper beam joint (1) is set in multiples and corresponds one-to-one with the multiple columns (2). The upper ends of the multiple columns (2) are welded to the multiple upper beam joints (1) one-to-one. The crossbeam (3) is perpendicular to the column (2) and welded to the column (2). The crossbeam (3) is set in multiples. The multiple crossbeams (3) are spaced apart along the height direction of the column (2). The inner wall panel (5) is laser welded to the side of the crossbeam (3) away from the column (2).

2. The sidewall structure according to claim 1, characterized in that, The lower beam (4) is a B-shaped beam, which includes an upper wing plate (41) and a lower wing plate (42). The column (2) is welded to the upper wing plate (41), and the lower end of the inner wall panel (5) is laser welded to the lower wing plate (42).

3. The sidewall structure according to claim 2, characterized in that, The weld between the inner wall panel (5) and the crossbeam (3) extends along the length of the crossbeam (3), and the weld between the inner wall panel (5) and the lower wing plate (42) extends along the length of the lower side beam (4).

4. The sidewall structure according to claim 3, characterized in that, The inner wall panel (5) has a wire drawing treatment on its surface, and the wire drawing direction is the extension direction of the laser weld on the inner wall panel (5).

5. The sidewall structure according to claim 2, characterized in that, The lower end of the column (2) is plug-welded to the upper wing plate (41), the upper end of the column (2) is spot-welded to the upper beam joint (1), and the column (2) is arc-welded to the crossbeam (3).

6. The sidewall structure according to claim 5, characterized in that, Both the column (2) and the beam (3) are U-shaped beams. The top plate of the column (2) is plug-welded to the upper wing plate (41). The two outer flaps of the column (2) are arc-welded to the top plate of the beam (3). The two outer flaps of the beam (3) are laser-welded to the inner wall panel (5).

7. The sidewall structure according to claim 2, characterized in that, The side wall structure includes a high partition side wall (100) and a low partition side wall (200). The height of the high partition side wall (100) is less than the height of the low partition side wall (200). The upper flange (41) of the lower side beam (4) of the high partition side wall (100) extends toward the low partition side wall (200) and is plug-welded to the column (2) of the low partition side wall (200) near the high partition side wall (100).

8. The sidewall structure according to claim 7, characterized in that, The column (2) on the side of the high partition sidewall (100) near the low partition sidewall (200) and the column (2) on the side of the low partition sidewall (200) near the high partition sidewall (100) are welded together by a connecting plate (21).

9. The sidewall structure according to claim 7, characterized in that, The lower beam (4) of the low-section sidewall (200) extends toward the high-section sidewall (100) and is laser welded to the inner wall panel (5).

10. A rail vehicle, characterized in that, Includes the sidewall structure as described in any one of claims 1-9.

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