A body structure of an open-top railway vehicle and a method of processing the same

Abstract

The application discloses a kind of open roof rail vehicle body structure, including side wall, underframe, upper floor and staircase, the two sides of upper floor are connected with side wall, the lower end of staircase is connected to underframe, the upper end of staircase is connected to upper floor;Side wall, staircase and upper floor are all used profile structure, upper floor, staircase all include upper panel, lower panel and rib plate, rib plate is connected with upper panel, lower panel simultaneously, the lower panel of upper floor is welded and connected with side wall, the upper panel of upper floor is welded and connected with side wall by first connecting plate;Horizontal direction is extended on side wall and welded and fixed with backing plate, backing plate is used to support the lower panel of staircase.The application effectively solves the welding problem of staircase and underframe, side wall, and staircase is welded simply, and the stiffness and strength are sufficient, and is not easy to deform;Meanwhile, the application also avoids staff to side wall and upper floor in the lower of upper floor and upward welding, is favorable to guarantee the welding quality.

Description

Technical Field

[0001] This invention relates to a car body structure for an open-top rail vehicle and its manufacturing method, belonging to the field of rail vehicle technology. Background Technology

[0002] The concept of convertible cars has existed since the dawn of the automobile, conveying a sense of freedom, individuality, style, and coolness. In the field of rail transit equipment, open-top freight trains are more common, while passenger rail vehicles such as urban rail and high-speed trains are almost never open-top. In enclosed carriages, due to the isolation created by glass and the car body, passengers cannot have direct contact with the outside world. On sunny days with suitable temperatures, open-top passenger rail trains are a good option, allowing tourists to better appreciate their surroundings and breathe fresh air. Therefore, open-top passenger rail vehicles can provide passengers with a better sightseeing experience.

[0003] The applicant's earlier patent application (publication number CN117657224A) discloses an open-top rail vehicle. This open-top rail vehicle includes an open-top area and a lower floor located at the bottom of the open-top area. A driver's cab is located at the front end of the open-top area, and an equipment room is located at the rear end. The open-top area includes a front wall, side walls, an upper floor, stairs, and a rear wall. The front wall is located near the driver's cab, and the rear wall is located near the equipment room. The side walls connect the left and right sides of the front and rear walls, and the upper floor connects to the bottom of the front, side, and rear walls. A staircase is located on the side of the upper floor closest to the rear wall. Furthermore, the applicant's earlier application (application number CN2024100370055) also discloses a similar open-top vehicle structure.

[0004] Because the upper floor of this open-top rail vehicle does not require people to stand under it, but only needs to place equipment and pass cables, there is insufficient space for welding the upper floor and stairs to the side walls. If on-site welders want to weld the weld seams on the lower surface of the upper floor, they need to lie down, squat, or bend over to weld overhead, which is very inconvenient and cannot guarantee the welding quality. Summary of the Invention

[0005] In order to overcome the problems existing in the prior art, the present invention provides an open-top rail vehicle body structure and its processing method, the specific technical solution of which is as follows.

[0006] An open-top rail vehicle body structure includes side walls, a base frame, an upper floor, and a staircase. The upper floor is connected to the side walls on both sides, the lower end of the staircase is connected to the base frame, and the upper end of the staircase is connected to the upper floor. The upper floor has an open structure. The side walls, staircase, and upper floor are all constructed using profiles. The upper floor and staircase each include a top panel, a bottom panel, and ribs. The ribs are connected to both the top and bottom panels.

[0007] The lower panel of the upper floor is welded to the side wall, and the upper panel of the upper floor is welded to the side wall through a first connecting plate.

[0008] A horizontally extending pad is welded and fixed to the side wall, and the pad is used to support the lower panel of the staircase.

[0009] Using the above technical solution, when welding the upper floor to the side wall, the lower panel of the upper floor can be welded to the side wall from above first. Then, after laying the first connecting plate, the first connecting plate is simultaneously welded and fixed to both the side wall and the upper panel of the upper floor. This avoids workers welding the side wall and upper floor from below, which helps ensure welding quality. Furthermore, by setting a backing plate, welding the staircase directly to the side wall from below can be avoided, thus preventing the problem of unreliable quality when welding from below the staircase.

[0010] Furthermore, the lower panel of the staircase is welded to the base frame, and the upper panel of the staircase is welded to the base frame via a second connecting plate. Similar to the welding of the upper floor to the side wall, this method helps to improve the quality of the weld.

[0011] Furthermore, the staircase comprises several staircase modules, which are welded together sequentially. Each staircase module has a horizontal section and a vertical section, wherein the upper panel connecting the vertical section to the upper panel of the horizontal section is also called the upper panel, and the lower panel connecting the vertical section to the lower panel of the horizontal section is also called the lower panel.

[0012] Furthermore, the upper floor includes a first floor and a second floor. The first floor extends parallel to the longitudinal direction, and the second floor extends parallel to the transverse direction. One side of the second floor is welded to the first floor, and the other side is welded to the staircase. The staircase extends parallel to the transverse direction. The first floor, the second floor, and the staircase are all profile structures, and their extension directions are the extrusion directions during profile forming. Here, the transverse and longitudinal directions refer to the transverse and longitudinal directions of the rail vehicle, where the longitudinal direction is parallel to the vehicle's running direction. The transverse extension of the staircase helps improve its structural strength, the longitudinal extension of the first floor helps reduce welding seams, and the first floor and the staircase are connected by the second floor, which helps improve the overall structural strength of the staircase and the floor above.

[0013] Based on the same inventive concept, the present invention also relates to a method for processing the above-mentioned open-top rail vehicle body structure, which mainly includes the following steps:

[0014] 1) Weld the staircase to the upper floor;

[0015] 2) Weld and fix several pads to the side wall;

[0016] 3) Place the staircase between the two side walls, and on the pad;

[0017] 4) Weld the lower panel of the upper floor to the side wall, then place the first connecting plate, and weld the first connecting plate to the side wall and the upper panel of the upper floor.

[0018] 5) Weld the lower panel of the staircase to the base frame, then place the second connecting plate, and weld the second connecting plate to the base frame and the upper panel of the staircase.

[0019] Compared with the prior art, this invention effectively solves the welding problems of stairs to the base frame and side walls. The stairs are easy to weld, have sufficient rigidity and strength, are not easily deformed, and are highly feasible. At the same time, this invention also avoids workers welding the side walls and upper floor from below the upper floor, which helps to ensure welding quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the vehicle body structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the vehicle body;

[0022] Figure 3 This is a diagram showing the connection of the stairs;

[0023] Figure 4 yes Figure 3 Enlarged schematic diagram of region I;

[0024] Figure 5 This is a schematic diagram showing the connection between the side wall and the upper floor.

[0025] Figure 6 This is a schematic diagram of an embedded reinforcement structure;

[0026] Figure 7 This is a schematic diagram of welding rain eaves.

[0027] In the diagram: 1-Side wall, 2-Inner partition wall assembly one, 3-Driver's cab assembly, 4-Roof one, 5-Upper floor, 6-Inner partition wall assembly two, 7-Roof two, 8-End wall, 9-Underframe, 9.1-Underframe side beam, 9.2-Lower floor, 10-Welded eaves, 11-Staircase, 12-Plate, 13-First connecting plate, 14-Second connecting plate two, 1a-Embedded reinforcing structure, 5a-First floor, 5a'-Groove, 5b-Second floor, 51-First weld, 52-Second weld, 53-Third weld, 91-Fourth weld, 92-Fifth weld, 93-Sixth weld. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] See Figures 1-7 , Figure 1 This is a schematic diagram of the open-top rail vehicle body structure, mainly including side walls 1, inner partition wall assembly 1 2, driver's cab assembly 3, roof 1 4, upper floor 5, inner partition wall assembly 2 6, roof 2 7, end walls 8, underframe 9, eaves 10, and stairs 11, etc. The lower end of side wall 1 is connected to underframe 9, the two sides of upper floor 5 are connected to the middle of side wall 1, the lower end of stairs 11 is connected to underframe 9, and the upper end of stairs 11 is connected to upper floor 5. The upper floor 5 is an open structure forming an open-top area. The two ends of the open-top area in the longitudinal direction are non-open-top areas, and the non-open-top areas have roofs. The roofs are connected and fixed to side walls 1, end walls 8, inner partition wall assembly 1 2, and inner partition wall assembly 2 6, etc. The side walls 1, stairs 11, and upper floor 5 all adopt profile structures. The upper floor 5 and stairs 11 each include an upper panel, a lower panel, and ribs. The ribs are connected to both the upper and lower panels. Passengers enter the non-open-top area through the passenger compartment door, pass through the passage of the inner partition assembly 6, and then enter the open-top area (upper floor 5) via stairs 11. The base frame 9 includes two side beams 9.1 and a lower floor 9.2 connecting the two side beams 9.1. Those skilled in the art will understand that the lower floor 9.2 below the upper floor 5 can be omitted to reduce weight.

[0030] Figure 2 This is the cross-section of the vehicle body. The body cross-section uses hollow aluminum profiles. The left side of the center line is the cross-section of the convertible area, mainly consisting of three parts: side wall 1, underframe side beam 9.1, and upper floor 5. The lower part of the upper floor 5 can be used to place equipment, while the upper part is equipped with passenger seats for sightseeing. The right side of the center line is the cross-section of the non-convertible area, mainly consisting of four parts: side wall 1, underframe side beam 9.1, lower floor 9.2, and roof.

[0031] Figure 3 , Figure 4This is a schematic diagram of the staircase connection. Staircase 11 comprises three staircase modules, which are welded together sequentially. Each staircase module has a horizontal section and a vertical section. The panel connecting the vertical section to the upper panel of the horizontal section is also called the upper panel, and the panel connecting the vertical section to the lower panel of the horizontal section is also called the lower panel. The upper floor 5 includes a first floor 5a and a second floor 5b. The first floor 5a extends parallel to the longitudinal direction, and the second floor 5b extends parallel to the transverse direction. One side of the second floor 5b is welded to the first floor 5a, and the other side is welded to the staircase 11. To ensure reliable welding of the first floor 5a and the second floor 5b, a groove 5a' is milled into the first floor 5a. During welding, staircase 11 and upper floor 5 are first welded together as a single unit, and then welded to the base frame 9 and side walls 1. Due to space constraints at the bottom of the base frame 9, the weld seam of the lower panel of the staircase 11 is difficult to weld to the base frame 9. Therefore, a second connecting plate 14 is added between the staircase 11 and the base frame 9. Thus, during welding, the fourth weld seam 91 of the staircase 11 and the base frame 9 is welded first (i.e., the lower panel of the staircase 11 is welded to the base frame 9 first), followed by the fifth weld seam 92 of the staircase 11 and the second connecting plate 14, and the sixth weld seam 93 of the base frame 9 and the second connecting plate 14 (i.e., the upper panel of the staircase 11 is welded to the base frame 9 through the second connecting plate 14). A horizontally extending pad plate 12 is welded and fixed to the side wall 1. The pad plate 12 is used to support the lower panel of the staircase 11, and pad blocks can be placed on the pad plate 12 to compensate for welding errors.

[0032] Figure 5 This is a schematic diagram of the connection of the upper floor 5. The side wall 1 has an interface for welding to the upper floor 5. Before welding, the first connecting plate 13 is not initially attached. During welding, the first weld 51 between the side wall 1 and the upper floor 5 is welded first (connecting the lower panel of the upper floor 5 to the side wall 1). Then, the first connecting plate 13 is attached, and the second weld 52 between the side wall 1 and the first connecting plate 13, and the third weld 53 between the upper floor 5 and the first connecting plate 13 (fixing the first connecting plate 13 to the side wall 1 and the upper panel of the upper floor 5) are welded together. The first connecting plate 13 and the upper floor 5 can be machined at their welding positions; the actual machining amount is flexible and can be adjusted according to the welding error after the left and right side walls are welded. The lateral length of the upper panel of the upper floor 5 is greater than the lateral length of the lower panel.

[0033] Figure 6 This is a schematic diagram of the embedded reinforcement structure. The transition between the convertible and non-convertible areas utilizes an embedded reinforcement structure with a large radius of curvature. For example... Figure 1 As shown, each car section has four embedded reinforcing structures 1a. The embedded reinforcing structure 1a is a hollow extruded aluminum profile, simple in structure and lightweight. During welding, a portion of the original sidewall profile is milled away, the embedded reinforcing structure 1a is inserted, and then it is welded in place.

[0034] Figure 7 This is a schematic diagram of the welded rain eaves. At the boundary between the convertible and non-convertible areas, rain eaves 10 are fixedly welded to the edges of roof 1 (4) and roof 2 (7), as shown in the diagram. Figure 1 As shown, each car has two welded rain canopies 10.

[0035] The welding process for the staircase 11 and the upper floor 5 mainly includes the following steps:

[0036] 1) Weld the staircase 11 to the upper floor 5;

[0037] 2) Weld and fix several pads 12 on the side wall 1;

[0038] 3) Place the staircase 11 between the two side walls 1 and on the pad 12;

[0039] 4) Weld the lower panel of the upper floor 5 to the side wall 1, then place the first connecting plate 13, and weld and fix the first connecting plate 13 to the side wall 1 and the upper panel of the upper floor 5.

[0040] 5) Weld the lower panel of the staircase 11 to the base frame 9, then place the second connecting plate 14, and weld and fix the second connecting plate 14 to the base frame 9 and the upper panel of the staircase 11.

[0041] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention is not limited to the specific embodiments described above; these embodiments are merely illustrative and not limiting. Those skilled in the art, under the guidance of the present invention, can make many modifications without departing from the spirit and scope of the claims, and all such modifications fall within the scope of protection of the present invention.

Claims

1. A convertible rail vehicle body structure, comprising side walls (1), a base frame (9), an upper floor (5), and a staircase (11), wherein the two sides of the upper floor (5) are connected to the side walls (1), the lower end of the staircase (11) is connected to the base frame (9), and the upper end of the staircase (11) is connected to the upper floor (5), and the upper part of the upper floor (5) is an open structure; the side walls (1), the staircase (11), and the upper floor (5) are all made of profile structure, and the upper floor (5) and the staircase (11) each include a top panel, a bottom panel, and a rib, wherein the rib is connected to both the top panel and the bottom panel. Its characteristics are: The lower panel of the upper floor (5) is welded to the side wall (1), and the upper panel of the upper floor (5) is welded to the side wall (1) through the first connecting plate (13). A horizontally extending pad (12) is welded and fixed to the side wall (1), and the pad (12) is used to support the lower panel of the staircase (11). The lower panel of the staircase (11) is welded to the base frame (9), and the upper panel of the staircase (11) is welded to the base frame (9) through the second connecting plate (14).

2. The open-top rail vehicle body structure according to claim 1, characterized in that, The staircase (11) comprises several staircase (11) modules, which are welded together in sequence.

3. The open-top rail vehicle body structure according to claim 1, characterized in that, The upper floor (5) includes a first floor (5a) and a second floor (5b). The first floor (5a) extends in a direction parallel to the longitudinal direction, and the second floor (5b) extends in a direction parallel to the transverse direction. One side of the second floor (5b) is welded to the first floor (5a), and the other side is welded to the staircase (11). The staircase (11) extends in a direction parallel to the transverse direction.

4. A method for processing the body structure of an open-top rail vehicle as described in any one of claims 1-3, characterized in that, The main steps include: 1) Weld the staircase (11) to the upper floor (5); 2) Weld and fix several pads (12) on the side wall (1); 3) Place the staircase (11) between the two side walls (1) and on the pad (12); 4) Weld the lower panel of the upper floor (5) to the side wall (1), then place the first connecting plate (13), and weld the first connecting plate (13) to the side wall (1) and the upper panel of the upper floor (5) to fix it. 5) Weld the lower panel of the staircase (11) to the base frame (9), then place the second connecting plate (14), and weld the second connecting plate (14) to the base frame (9) and the upper panel of the staircase (11) to fix it.

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