RAILROAD CAR STRUCTURE

Abstract

 An object of the invention is to provide a railway vehicle structure having a configuration in which joint portions of a central portion side structure and an end portion side structure can be easily positioned and which can be easily and reliably manufactured. A railway vehicle structure (1) includes: an underframe (10) forming a floor surface, side structures (20) each forming a side surface, and a roof structure (40) mounted on upper end portions of the side structures (20). The side structure (20) includes a central portion side structure (22) provided at a central portion of the side structure (20) in a longitudinal direction, and an end portion side structure (24) provided at an end portion of the central portion side structure (22) in a longitudinal direction, and the central portion side structure (22) includes an extending portion (23), which extends to an end portion of the side structure (20) in the longitudinal direction, at an upper end in a height direction, and the end portion side structure (24) is provided at a lower portion of the extending portion (23).

Description

Technical Field

[0001] The present invention relates to a railway vehicle structure.

Background Art

[0002] In general, a railway vehicle structure is formed of a hexahedral structure including an underframe forming a floor surface, side structures erected at both end portions of the underframe in a width direction, and end structures erected at both end portions of the underframe in a longitudinal direction, and a roof structure mounted on upper end portions of the side structures and the end structures.

[0003] In manufacturing of the railway vehicle structure, a plurality of extrusion-molded members may be used in order to reduce the number of components and reduce the number of manufacturing steps. In this case, a plurality of hollow extruded materials formed by extrusion-molding an aluminum alloy in the longitudinal direction of the railway vehicle structure are joined to manufacture the underframe, the side structure, and the roof structure constituting the railway vehicle structure.

[0004] Further, when a railway vehicle passes through a curve or a crossover line, a width direction dimension of the end portion of the side structure in the longitudinal direction may be designed to be small in order to make a maximum width direction dimension of the end portion of the railway vehicle in the longitudinal direction fall within a range of the vehicle limit. In such a case, as disclosed in Patent Literature 1, the width direction dimension of the end portion of the railway vehicle structure in the longitudinal direction is designed to be small.

Prior Art Literature

Patent Literature

[0005] Patent Literature 1: JP-A-2011-201369

Summary of Invention

Technical Problem

[0006] When the width direction dimension of the railway vehicle structure does not change in the longitudinal direction thereof, the side structure can be easily manufactured with a hollow extruded material having a longitudinal direction length of the side structure. However, when a width direction dimension of the end portion of the railway vehicle structure in the longitudinal direction is smaller than a width direction dimension of a central portion thereof, it is not easy to manufacture all side structures with the hollow extruded material having a longitudinal direction length of the side structure. The reason is that the hollow extruded material in which two opposing face plates are connected by a plurality of ribs has large bending stiffness, so that bending processing or the like cannot be easily performed.

[0007] Therefore, when the width direction dimension of the railway vehicle structure is changed at the end portion, the side structure is manufactured by being divided into a central portion structure of a longitudinal direction central portion and an end portion structure of a longitudinal end portion. That is, a railway vehicle structure formed of a hexahedral structure is manufactured by joining the underframe, the central portion structures, the end portion side structures, the end structures, and the roof structure by welding or the like. In such a manufacturing process, since the end portion side structure needs to be attached in alignment with the four members of the central portion structure, the roof structure, the underframe, and the end structure, the manufacturing process is complicated.

[0008] An object of the invention is to provide a railway vehicle structure including side structures each being constituted by a central portion side structure and an end portion side structure, and the railway vehicle structure has a configuration in which a position where the central portion side structure and the end portion side structure are joined can be easily determined, enabling the railway vehicle structure to be easily and reliably manufactured.

Solution to Problem

[0009] To achieve the above object, one representative railway vehicle structure of the invention includes: an underframe forming a floor surface, side structures each forming a side surface, and a roof structure mounted on upper end portions of the side structures. The side structure includes a central portion side structure provided at a central portion of the side structure in a longitudinal direction, and an end portion side structure provided at an end portion of the central portion side structure in a longitudinal direction, the central portion side structure includes an extending portion, which extends to an end portion of the side structure in the longitudinal direction, at an upper end in a height direction, and the end portion side structure is provided at a lower portion of the extending portion.

Advantageous Effect

[0010] According to the invention, in a railway vehicle structure having a side structure constituted by a central portion side structure and an end portion side structure, it is possible to easily and reliably join the central portion side structure and the end portion side structure.

Brief Description of Drawings

[0011] 

[FIG. 1] FIG. 1 is a perspective view showing an end portion in a longitudinal direction of a railway vehicle structure according to an embodiment of the invention.

[FIG. 2] FIG. 2 is a side view of the end portion in the longitudinal direction of the railway vehicle structure according to the embodiment of the invention.

[FIG. 3] FIG. 3 is a plan view showing a state before joining the central portion side structure and the end portion side structure of the railway vehicle structure according to the embodiment of the invention.

[FIG. 4] FIG. 4 is a cross-sectional view of the railway vehicle structure according to the embodiment of the invention (cross-sectional view taken along A-A in FIG.2) and shows the vicinity of a connection location between the central portion side structure and the end portion side structure.

[FIG. 5] FIG. 5 is a cross-sectional view of the railway vehicle structure according to the embodiment of the invention (cross-sectional view taken along B-B in FIG. 2) and shows the vicinity of a connection location between the central portion side structure and the end portion side structure.

Description of Embodiments

[0012] Embodiments of a railway vehicle structure according to the invention will be described below with reference to FIGS. 1 to 5. First, each direction provided for description is defined. A longitudinal direction (rail direction, front-rear direction) of a railway vehicle structure 1 is an X direction, a width direction (crosstie direction) of the railway vehicle structure 1 is a Y direction, and a height direction (vertical direction) of the railway vehicle structure 1 is a Z direction. Hereinafter, the above directions may be simply referred to as X direction, the Y direction, and the Z direction. Further, in each of the drawings, the range of the arrow indicates the range of the member to which the symbol described therein corresponds. In the invention, when simply referred to as "connection", it is possible to connect by, for example, welding.

[0013] FIG. 1 is a perspective view showing an end portion in a longitudinal direction of a railway vehicle structure which shows one embodiment of the railway vehicle structure of the invention.

(Description of Entire Railway Vehicle Structure)

[0014] As shown in FIG. 1, the railway vehicle structure 1 is a hexahedral structure constituted by an underframe 10, side structures 20, end structures 30, and a roof structure 40. The underframe 10 forms a floor surface of the railway vehicle structure 1. The side structures 20 are erected upward from both end portions of the underframe 10 in the Y direction, and form side surfaces on both sides of the end portions the railway vehicle structure 1 in the width direction. The end structures 30 are erected upward from end portions of the underframe 10 in the X direction, and form side surfaces on both sides of the end portions of the railway vehicle structure 1 in the longitudinal direction. The roof structure 40 is mounted on upper end portions of the side structures 20 and is connected to the upper end portions of the end structures 30 so as to cover the upper side of the railway vehicle structure 1.

[0015] The side structure 20 is constituted by a central portion side structure 22 and an end portion side structure 24. The central portion side structure 22 is provided at a central portion of the side structure 20 in the X direction, and includes an extending portion 23. The end portion side structure 24 is provided on an end portion side of the side structure 20 in the X direction and is connected to the central portion side structure 22. The central portion side structure 22 is provided with a window opening portion 21, a side entrance opening portion (not shown) provided for a passenger and the like getting on and off, and the like. Further, in the present embodiment, a retraction portion C which is a portion having a small width direction is formed in the end portion side structure 24.

[0016]  The end structure 30 is provided with a through passage opening 31 to which a through passage for the passenger or the like to traverse an adjacent vehicle is connected. Since the roof structure 40 is equipped with an air conditioner (not shown) for adjusting a temperature and humidity environment inside the vehicle, an opening portion (not shown) for allowing air to enter and exit between a vehicle interior and the air conditioner is provided.

[0017] The underframe 10, the side structures 20, and the roof structure 40 are generally formed by joining a plurality of hollow extruded materials made of aluminum alloy extrusion-molded in the X direction. The hollow extruded material includes two opposing face plates (vehicle interior side face plate and vehicle exterior side face plate), has a shape in which the above two face plates are connected by a plurality of ribs, and is lightweight and has high rigidity.

(Central Portion Side Structure)

[0018] The details of the central portion side structure 22 will be described below.

[0019] FIG. 2 is a side view of the end portion in the longitudinal direction the railway vehicle structure according to the embodiment of the invention. Further, FIG. 3 is a plan view showing a state before joining the central portion side structure and the end portion side structure of the railway vehicle structure according to the embodiment of the invention. FIG. 4 is a cross-sectional view of the railway vehicle structure according to the embodiment of the invention (cross-sectional view taken along A-A in FIG.2) and shows the vicinity of a connection location between the central portion side structure and the end portion side structure. FIG. 5 is a cross-sectional view of the railway vehicle structure according to the embodiment of the invention (cross-sectional view taken along B-B in FIG. 2) and shows the vicinity of a connection location between the central portion side structure and the end portion side structure. A center line 70 in FIG. 4 is a center line extending in the X direction showing the center of the railway vehicle structure 1 in the width direction. A center line 72 in FIG. 5 is a center line extending in the Z direction showing the center of the railway vehicle structure 1 in the width direction.

[0020] As shown in FIG. 4, the central portion side structure 22 is a hollow extruded material, and is formed of two face plates on the vehicle interior side and the vehicle exterior side which oppose to each other and ribs connecting the face plates. Similarly, the extending portion 23 of the central portion side structure 22 is constituted by a hollow extruded material. Here, the central portion side structure 22 is manufactured by arranging a plurality of hollow extruded materials extrusion-molded in the X direction on a surface plate and butt-joining the end portions of the hollow extruded materials in the Z direction to each other. That is, as shown in FIGS. 1 to 3, the central portion side structure 22 is assembled in a panel shape in which a plurality of hollow extruded materials are arranged in the Z direction. Further, the central portion side structure 22 is provided with the window opening portion 21 and a side opening portion (not shown) provided for passenger and the like getting on and off, and the like.

[0021] As shown in FIG. 3, the central portion side structure 22 is formed of six hollow extruded materials of 20a to 20f in order from the upper side in the Z direction. Further, the hollow extruded material 20a at the upper end portion in the Z direction includes the extending portion 23 extending in the X direction toward the end portion of the side structure 20. The extending portion 23 is formed from one end portion to the other end portion of the side structure 20 in the X direction (entire length of the side structure 20). Further, a lower portion of the extending portion 23 in the central portion side structure 22 is a cutout portion 60 which is cut out, and the end portion side structure 24 is connected to the cutout portion 60.

[0022] In the embodiment shown in FIG. 3, the extending portion 23 is formed by extending a part of the hollow extruded material 20a, which is at the upper end portion of the central portion side structure 22 in the Z direction, in the X direction of the side structure 20. However, a length of the extending portion 23 in the Z direction may be arbitrarily changed, and the entire hollow extruded material 20a may be the extending portion 23. Further, the extending portion 23 may include the entire hollow extruded material 20a and the hollow extruded materials 20b and 20c at the lower portion thereof.

[0023] As shown in FIG. 3, when the extending portion 23 is formed as a part of the hollow extruded material 20a, the hollow extruded materials (20b, 20c, 20d, 20e, 20f) other than the hollow extruded material 20a are connected adjacently in the Z direction on the lower side of the hollow extruded material 20a. In this case, the dimension of the hollow extruded materials (20b, 20c, 20d, 20e, 20f) in the X direction is set smaller than the dimension of the side structure 20 in the longitudinal direction by an X direction dimension of the end portion side structure 24. That is, in the hollow extruded materials (20b, 20c, 20d, 20e, 20f) other than the hollow extruded material 20a, the end portion side in the X direction is a portion of the cutout portion 60.

(End Portion Side Structure)

[0024] The end portion side structure 24 will be described below.

[0025] In the embodiment shown in FIGS. 2 and 3, the end portion side structure 24 is a rectangular panel-shaped member as a whole and is constituted by a vertical edge member 26, a lateral edge member 28, a face plate 25, and reinforcement members 29. The vertical edge member 26 is provided along the Z direction at an end portion on the center side (central portion side of the side structure 20) in the X direction. The lateral edge member 28 is provided along the X direction at an upper side end portion (upper end portion) in the Z direction. The face plate 25 is a plate-shaped member that forms a vehicle exterior side surface of the end portion side structure 24. The face plate 25 is connected to the vertical edge member 26 at the end portion on the center side in the X direction, and is connected to the lateral edge member 28 at the upper side end portion in the Z direction. The reinforcement member 29 is a reinforcement member for connecting the vertical edge member 26, the lateral edge member 28, and the face plate 25, and a plurality of the reinforcement members 29 are provided. The vertical edge member 26, the lateral edge member 28, and the reinforcement member 29 are all constituted by an extruded material made of aluminum alloy.

[0026] As shown in the cross-sectional view in FIG. 4, the central portion side structure 22 is a hollow extruded material, and is formed of two face plates on the vehicle interior side face plate 22a and a vehicle exterior side face plate 22b which oppose to each other and ribs connecting the face plates. The vertical edge member 26 of the end portion side structure 24 includes a main body portion 26a, an overlapping portion 27, and a face plate connecting portion 26b. The main body portion 26a of the vertical edge member 26 has a hollow square columnar shape when viewed from the upper side, and is formed along the Z direction. The overlapping portion 27 is a plate-shaped member extending in the X direction from an end portion of the main body portion 26a, which is on the center side in the X direction and is on the vehicle interior side in the Y direction, toward the center portion side of the side structure 20. The overlapping portion 27 is formed integrally with the vertical edge member 26. Further, the face plate connecting portion 26b is a projecting-shaped plate member protruding from the main body portion 26a to the outside in the X direction (end portion side of the side structure 20), and can be connected to the vehicle interior side of the face plate 25. At this time, the face plate connecting portion 26b is positioned on the vehicle interior side by a thickness of the face plate 25. Thus, the position of a surface on the vehicle exterior side of the face plate 25 and a surface on the vehicle exterior side of the main body portion 26a of the vertical edge member 26 can be aligned, and the appearance can be improved as a smooth surface on the vehicle exterior side.

[0027] As shown in FIG. 4, a surface on the vehicle exterior side of the overlapping portion 27 is a surface substantially parallel to the central portion side structure 22. Thus, the position of the surface on the vehicle exterior side of the end portion side structure 24 and the position of the surface on the vehicle exterior side of the central portion side structure 22, that is, distances from the center line 70 toward the Y direction can be aligned. It is possible to easily determine a surface position of the end portion side structure 24 in the Y direction by abutting and overlapping the surface on the vehicle exterior side of the overlapping portion 27 with the face plate on the vehicle interior side of the central portion side structure 22. Then, the overlapping portion 27 of the end portion side structure 24 and the central portion side structure 22 can be connected. Further, the side surface on the end portion side in the central portion side structure 22 in the X direction is abutted with the side surface of the main body portion 26a of the vertical edge material 26 in the X direction. Thus, the positions of the central portion side structure 22 and the end portion side structure 24 in the X direction can be easily determined. Further, the vertical edge member 26 of the end portion side structure 24 and the central portion side structure 22 can be connected to each other. At this time, the surface on the vehicle exterior side of the main body portion 26a of the vertical edge member 26 and the surface on the vehicle exterior side of the central portion side structure 22 are in the same position in the Y direction, thereby providing a smooth surface on the vehicle exterior side.

[0028] As shown in the cross-sectional view in FIG. 5, the extending portion 23 of the central portion side structure 22 is similarly constituted by the hollow extruded material, and is formed of two face plates of a vehicle interior side face plate 23a and a vehicle exterior side face plate 23b which oppose to each other and ribs 23c connecting the face plates. The lateral edge member 28 of the end portion side structure 24 includes a main body portion 28a, a vehicle interior side connecting portion 28b, a vehicle exterior side connecting portion 28c, and a face plate connecting portion 28d. The main body portion 28a has a hollow square columnar shape when viewed from the lateral side, and is formed along the X direction. The vehicle interior side connecting portion 28b and the vehicle exterior side connecting portion 28c are protruding-shaped plate members extending above the main body portion 28a, the vehicle interior side connecting portion 28b is formed on the vehicle interior side, and the vehicle exterior side connecting portion 28c is formed on the vehicle exterior side. The face plate connecting portion 28d is a projecting-shaped plate member protruding to lower side from the main body portion 28a, and can be connected to the vehicle interior side of the face plate 25 by being abutted with the vehicle interior side. At this time, the face plate connecting portion 28d is positioned on the vehicle interior side by the thickness of the face plate 25. Thus, the position of the surface on the vehicle exterior side of the face plate 25 and the surface on the vehicle exterior side of the main body portion 28a of the lateral edge member 28 can be aligned, and the appearance can be improved as a smooth surface on the vehicle exterior side.

[0029] Further, as shown in FIG. 5, on the lower side of the extending portion 23, the vehicle interior side connecting portion 28b of the lateral edge member 28 can be overlapped with the vehicle interior side face plate 23a of the extending portion 23. The vehicle exterior side connecting portion 28c of the lateral edge member 28 can be overlapped with the vehicle exterior side face plate 23b of the extending portion 23. As a result, the extending portion 23 and the end portion side structure 24 can be reliably joined. At this time, the vehicle exterior side connecting portion 28c of the lateral edge member 28 is positioned on the vehicle interior side of the vehicle exterior side face plate 23b of the extending portion 23. Further, the vehicle exterior side connecting portion 28c of the lateral edge member 28 is positioned on the vehicle interior side by a thickness of the vehicle exterior side face plate 23b of the extending portion 23. Thus, the positions of the surface on the vehicle exterior side of the vehicle exterior side face plate 23b of the extending portion 23 and the surface on the vehicle exterior side of the main body portion 28a of the lateral edge member 28 can be aligned, and the appearance can be improved as a smooth surface on the vehicle exterior side. Further, the vehicle interior side connecting portion 28b of the lateral edge member 28 is positioned on the vehicle interior side with respect to the vehicle interior side face plate 23a of the extending portion 23.

[0030] Further, a lower end portion in the Z direction of at least one of the vehicle interior side face plate 23a and the vehicle exterior side face plate 23b of the extending portion 23 is abutted with the lateral side edge member 28 and is connected therewith. Examples of an abutting state at this time includes a state in which the vehicle exterior side face plate 23b of the extending portion 23 is abutted with the main body portion 28a of the lateral edge member 28, a state in which the vehicle exterior side face plate 23b of the extending portion 23 is abutted with the vehicle exterior side connecting portion 28c, a state in which the vehicle interior side face plate 23a of the extending portion 23 is abutted with the main body portion 28a of the lateral edge member 28, and a state in which the vehicle interior side face plate 23a of the extending portion 23 is abutted with the vehicle interior side connecting portion 28b of the lateral edge member 28. The position in the Z direction of the end portion side structure 24 with respect to the extending portion 23 can be easily determined by abutting in an abutting state among at least of the above states. Therefore, at least one of the main body portion 28a, the vehicle interior side connecting portion 28b, and the vehicle exterior side connecting portion 28c of the lateral edge member 28 can serve as an abutting portion with respect to the extending portion 23. The upper side of the extending portion 23 is connected to the roof structure 40.

[0031] Further, as shown in FIGS. 1 to 4, the end portion side structure 24 of the present embodiment includes a C portion. As shown in the cross-sectional view in FIG. 4, the C portion is a retraction portion in which the width direction (Y direction) dimension of the railway vehicle structure 1 is smaller than other portions. The retraction portion C is provided to allow the end portion of the railway vehicle structure 1 in the X direction to fall within a range of a vehicle limit when the railway vehicle passes through a curve and a crossover line. A width dimension of the retraction portion C on the end portion side of the side structure 20 in the X direction is set smaller than a width dimension in the same horizontal plane in the side structure 20 other than the C portion (for example, the central portion in the longitudinal direction of the railway vehicle structure 1). Specifically, as shown in FIG. 4, a distance from the center line 70 to the vehicle exterior surface is set to be smaller by a dimension d in the retraction portion C than other portion in the same horizontal plane.

(Description of Manufacturing Method of Side Structure)

[0032] Next, a manufacturing process of connecting the central portion side structure 22 and the end portion side structure 24 to manufacture the side structure 20 will be described.

[0033] In order to connect the central portion side structure 22 and the end portion side structure 24, the central portion side structure 22 is placed on the surface plate to position the end portion side structure 24. First, the end portion side structure 24 is positioned at an end portion of the central portion side structure 22 in the X direction. At this time, as shown in FIG. 4, at the end portion of the central portion side structure 22 in the X direction, the vehicle interior side face plate 22a of the central portion side structure 22 is overlapped with the overlapping portion 27 of the end portion side structure 24. Accordingly, the positioning of the end portion side structure 24 in the Y direction with respect to the central portion side structure 22 can be completed in a short time. Further, as shown in FIG. 4, the end portion of the central portion side structure 22 in the X direction is abutted with the main body portion 26a of the vertical edge member 26 of the end portion side structure 24, and the positioning in the X direction can also be completed in a short time.

[0034] Next, the end portion side structure 24 is slid (moved) in the Z direction (upward direction) . At this time, as shown in FIG. 4, the end portion of the central portion side structure 22 in the X direction is brought into a state of being abutted with the main body portion 26a of the longitudinal edge member 26 of the end portion side structure 24, and is slid in the above state. Thus, the end portion side structure 24 can be moved in the Z direction while the position of the end portion side structure 24 in the X direction remains constant. That is, the main body portion 26a of the vertical edge member 26 functions as a guide member for keeping the position in the X direction constant. Further, as shown in FIG. 4, at the end portion of the central portion side structure 22 in the X direction, the vehicle interior side face plate 22a of the central portion side structure 22 is overlapped with the overlapping portion 27 of the end portion side structure 24, and is slid in the above state. Thus, the end portion side structure 24 can be moved in the Z direction while the position of the end portion side structure 24 in the Y direction remains constant. That is, the overlapping portion 27 functions as a guide member for keeping the position in the Y direction constant. In this way, while being guided by the main body portion 28a of the lateral edge member 28 and the overlapping portion 27, the end portion side structure 24 can be slid in the Z direction.

[0035] Then, the end portion side structure 24 is slid until the lateral edge member 28 is abutted with the extending portion 23, so that the end portion side structure 24 can be positioned. FIG. 5 shows a state in which the lateral edge member 28 of the end portion side structure 24 is abutted with and is connected with the extending portion 23. At least one of the vehicle interior side face plate 23a and the vehicle exterior side face plate 23b of the extending portion 23 is abutted with the abutting portion of the lateral edge member 28 of the end portion side structure 24. As described above, as the abutting portion of the lateral edge member 28, at least one of the main body portion 28a, the vehicle interior side connecting portion 28b, and the vehicle exterior side connecting portion 28c can serve as an abutting portion. Accordingly, the Z direction position is determined. At this time, the vehicle interior side connecting portion 28b of the lateral edge member 28 is disposed so as to overlap with the vehicle interior side face plate 23a of the extending portion 23, and the vehicle exterior side connecting portion 28c of the lateral edge member 28 is disposed so as to overlap with the vehicle exterior side face plate 23b of the extending portion 23.

[0036] After the positioning of the end portion side structure 24 is completed, the end portion side structure 24 and the central portion side structure 22 are joined. First, the vertical edge member 26 of the end portion side structure 24 and a butt portion of the central portion side structure 22 in the X direction, which are shown in FIG. 4, are joined. At the same time, the overlapping portion 27 of the vertical edge member 26 and the vehicle interior side face plate 22a of the central portion side structure 22 are joined. Further, the lateral edge material 28 of the end portion side structure 24 and the abutting portion of the extending portion 23(hollow extruded material 20a) of the central portion side structure 22, which are shown in FIG. 5, are joined. The joining here is performed by, for example, joining the vehicle interior side connecting portion 28b of the lateral edge member 28 with the vehicle interior side face plate 23a of the extending portion 23, and joining the vehicle exterior side connecting portion 28c of the lateral edge member 28 with the vehicle exterior side face plate 23b of the extending portion 23. In this way, when the joining of the vertical edge member 26 and the lateral edge member 28 with the central portion side structure 22 is completed, the end portion side structure 24 is connected to the central portion side structure 22 to complete the side structure 20.

[0037] The end portion side structure 24 can be easily positioned with respect to the central portion side structure 22 by providing the extending portion 23 at the upper end portion of the end portion of the central portion side structure 22 in the X direction, in addition to providing the overlapping portion 27 on the vertical edge member 26 in the end portion side structure 24. Therefore, the number of manufacturing steps of the side structure 20 can be reduced, and reliable manufacturing is possible.

(Description of End Structure)

[0038] As shown in the cross-sectional view in FIG. 4, the end structure 30 includes a corner post 36 formed at an end and a face plate 35 is connected from the corner post 36. Front and rear surfaces of the railway vehicle structure 1 are formed by the face plate 35 of the end structure 30. Here, the corner post 36 is connected to the face plate 25 of the end portion side structure 24.

(Description of Roof Structure)

[0039] As shown in FIG. 5, the roof structure 40 is a hollow extruded material, and has a shape in which two opposing face plates (vehicle interior side face plate 40a and vehicle exterior side face plate 40b) are included and the two face plates are connected by a plurality of ribs 40c. Further, as shown in FIGS. 1 and 5, lower end portions of side surfaces at both ends of the roof structure 40 in the width direction are connected to upper end portions including the extending portion 23 of the side structure 20. At this time, as shown in FIG. 5, the vehicle interior side face plate 40a of the roof structure 40 and the vehicle interior side face plate 23a of the extending portion 23 are connected. The vehicle exterior side face plate 40b of the roof structure 40 and the vehicle exterior side face plate 23b of the extending portion 23 are connected. At this time, a connecting portion may be suitably provided in the roof structure 40 or the extending portion 23 to facilitate connection therebetween. Further, as shown in FIG. 1, lower portions of side surfaces of both ends of the roof structure 40 in the longitudinal direction are connected to upper end portions of the end structures 30.

[0040] As shown in FIG. 1, the roof structure 40 is mounted on the upper end portions of the side structures 20 after the side structures 20 are erected on the underframe 10. At this time, the side structure 20 includes the extending portion 23 at an upper end portion in the Z direction. The upper end portion including the extending portion 23 is constituted by the integral hollow extruded material 20a over the entire length from one end portion to the other end portion in the X direction. The roof structure 40 is connected to the entire upper portion of the hollow extruded material 20a in the longitudinal direction.

(Effects According To Present Embodiment)

[0041] As described above, in the present embodiment, it is possible to easily and reliably position the end portion side structure 24 in the Z direction by providing the extending portion 23 at the upper end portion of the end portion of the central portion side structure 22 in the X direction. Further, by providing the overlapping portion 27 on the vertical edge member 26 in the end portion side structure 24, it is possible to easily and reliably position the end portion side structure 24 in the Y direction. Further, it is possible to easily and reliably perform positioning in the X direction by abutting the side surface of the X direction end portion on the center side of the end portion side structure 24 provided with the vertical edge member 26 with the side surface of the X direction end portion of the central portion side structure 22. In this way, since the extending portion 23 is provided in the central portion side structure 22, the positioning can be easily and reliably performed only by the two members of the central portion side structure 22 and the end portion side structure 24 in all directions. Therefore, the position where the central portion side structure 22 and the end portion side structure 24 are joined can be easily and accurately determined, and the railway vehicle structure can be manufactured easily and reliably.

[0042] Further, the upper end portion of the central portion side structure 22 including the extending portion 23 is formed of the integral hollow extruded material 20a extending from one end portion to the other end portion of the side structure 20 in the X direction. Therefore, high dimensional accuracy can be maintained at the abutting portion between the side structure 20 and the roof structure 40. As a result, the upper end portion of the side structure 20 and the roof structure 40 can be easily positioned and joined in a small number of steps.

[0043] The invention is not limited to the embodiment described above, and includes various modifications. For example, the embodiments described above have been described in detail for easy understanding of the invention, and the invention is not necessarily limited to those including all the configurations described above. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. Further, it is possible to add, delete, and replace other configurations for part of the configuration of each embodiment.

[0044] The number of members of the hollow extruded materials forming the side structure 20 is not limited to that shown in the embodiment, and it is needless to say that the configuration of the end portion side structure 24 can be appropriately changed.

[0045] Further, for example, the overlapping portion 27 is provided on the vertical edge member 26 of the end portion side structure 24. As a result, the overlapping portion 27 can be firmly provided on the end portion side structure 24 via the vertical edge member 26. However, in the meaning of the positioning function, the overlapping portion may be provided at an end portion of the central portion side structure 22. The overlapping portion in this case is provided at the end portion of the central portion side structure 22, and the vehicle interior side of the end portion side structure 24 is positioned so as to overlap with the vehicle exterior side of the overlapping portion.

[0046] Further, the vehicle interior side connecting portion 28b and the vehicle exterior side connecting portion 28c of the lateral edge member 28 are connected on the vehicle interior side with respect to the vehicle interior side face plate 23a and the vehicle exterior side face plate 23b of the extending portion 23. Thus, on the vehicle exterior side, the face plate of the extending portion 23 can be used as the surface to improve the appearance. However, from the aspect of connection, a configuration can be employed in which the connecting portions of the lateral edge material 28 are set on the vehicle exterior side.

Reference Sign List

[0047] 

1

railway vehicle structure

10

underframe

20

side structure

20a, 20b, 20c, 20d, 20e, 20f

hollow extruded material

21

window opening portion

22

central portion side structure

22a

vehicle interior side face plate

22b

vehicle exterior side face plate

23

extending portion

23a

vehicle interior side face plate

23b

vehicle exterior side face plate

23c

rib

24

end portion side structure

25

face plate

26

vertical edge member

26a

main body portion

26b

face plate connecting portion

27

overlapping portion

28

lateral edge member

28a

main body portion

28b

vehicle interior side connecting portion

28c

vehicle exterior side connecting portion

28d

face plate connecting portion

29

reinforcement member

30

end structure

31

through passage opening

35

face plate

36

corner post

40

roof structure

40a

vehicle interior side face plate

40b

vehicle exterior side face plate

40c

rib

60

cutout portion

C

retraction portion

Claims

1. A railway vehicle structure, comprising:

an underframe forming a floor surface;

side structures each forming a side surface; and

a roof structure mounted on upper end portions of the side structures, wherein

the side structure includes a central portion side structure provided at a central portion of the side structure in a longitudinal direction, and an end portion side structure provided at an end portion of the central portion side structure in the longitudinal direction,

the central portion side structure includes an extending portion, which extends to an end portion of the side structure in the longitudinal direction, at an upper end portion in a height direction, and

the end portion side structure is provided at a lower portion of the extending portion.

2. The railway vehicle structure according to claim 1, wherein
the end portion side structure includes a vertical edge member, a lateral edge member, and a face plate connected to the vertical edge member and the lateral edge member, the vertical edge member is provided at an end portion of the central portion side structure side of the end portion side structure in the longitudinal direction along a height direction, and the lateral edge member is provided along a horizontal direction of an upper end portion of the end portion side structure.

3. The railway vehicle structure according to claim 2, wherein
the vertical edge member includes an overlapping portion which extends in the longitudinal direction of the central portion side structure, and the overlapping portion is overlapped with a surface on a vehicle interior side of the central portion side structure.

4. The railway vehicle structure according to claim 2, wherein
the extending portion includes two opposing face plates, and ribs which connect the two face plates, and is configured with a hollow extruded material extrusion-molded in a longitudinal direction of the extending portion, and
the lateral edge member includes an abutting portion which is abutted with at least one of the two face plates of the extending portion.

5. The railway vehicle structure according to any one of claims 1 to 4, wherein
the end portion side structure includes a retraction portion in which a width direction dimension of the end portion of the railway vehicle structure in the longitudinal direction is set smaller than a width direction dimension in the same horizontal plane of a central portion of the railway vehicle structure in the longitudinal direction.

Drawing