Railway vehicles and their manufacturing methods

Abstract

To provide a railway vehicle and a method for manufacturing the same, comprising a hollow bulkhead member that surrounds a gas conduit located near the side outer panel and airtightly separates it from the passenger compartment, and a reinforcing member that can easily reinforce a long girder with a relief section through which the bulkhead member passes. [Solution] The railway vehicle 10 is equipped with a gas conduit 4 disposed between a high-pressure gas container 1 mounted on a roof panel YK1 and a gas usage device 3 installed below a floor panel 2. The gas conduit is disposed near the side outer panel GK1, and a hollow bulkhead member 6 is provided that surrounds the gas conduit within the vehicle body ST, airtightly separating it from the passenger compartment 5 and communicating with the outside of the vehicle. The ends 7T in the vehicle width direction of multiple rafters 7 supporting the roof panel and the upper end GKJ of the side structure are connected, and a long girder 8 extending in the vehicle longitudinal direction is provided with a relief section 81 through which the bulkhead member passes. Rafters adjacent in the vehicle longitudinal direction with the relief section in between are connected to each other by a reinforcing member 9 extending in the vehicle longitudinal direction at a position spaced apart from the bulkhead member toward the passenger compartment.

Description

Technical Field

[0001] The present invention relates to a railway vehicle and a method for manufacturing the same. More specifically, the present invention relates to a railway vehicle provided with a partition member that surrounds a gas conduit disposed between a high-pressure gas container mounted on a roof and a gas-using device installed under a floor, and that partitions the vehicle compartment in an airtight manner, and a method for manufacturing the railway vehicle.

Background Art

[0002] Generally, railway vehicles used in non-electrified sections include diesel vehicles that run on diesel engines and hybrid vehicles that switch between a diesel engine and an electric motor to run. However, in such railway vehicles, since a diesel engine that burns light oil or the like is used, there are problems such as exhaust gas problems and an increase in vehicle mass. Therefore, in recent years, railway vehicles that run on the power of fuel cells, which are less likely to cause exhaust gas problems and can be lightweight, have attracted attention.

[0003] In addition, natural gas mainly consists of methane and contains almost no impurities such as harmful carbon monoxide. The amounts of nitrogen oxides and carbon dioxide generated when burned are less than those of light oil or the like, and almost no sulfur oxides are generated. Therefore, natural gas is said to be an energy source friendly to the environment. Therefore, railway vehicles that run on natural gas have also attracted attention.

[0004] For example, Patent Document 1 discloses a railway vehicle 100 equipped with a fuel cell 101 that generates electricity by reacting hydrogen and oxygen, and a hydrogen tank 102 that stores the hydrogen supplied to the fuel cell 101, as shown in Figure 7. The railway vehicle 100 is equipped with a switching device 106 that switches between a state in which power supplied from the overhead line 104 via a pantograph 103 is supplied to the drive unit 105 and a state in which power generated by the fuel cell 101 is supplied to the drive unit 105. In the above railway vehicle 100, if the hydrogen tank 102 is placed on the roof and the fuel cell 101 is placed under the floor, it was necessary to supply high-pressure hydrogen gas stored in the hydrogen tank 102 to the fuel cell 101 side via a gas conduit. Similarly, if a natural gas tank is placed on the roof and a natural gas-fueled engine is placed under the floor, it was necessary to supply high-pressure natural gas to the engine side via a gas conduit, just as with hydrogen gas. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2005-65398 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, gas pipelines carrying hydrogen gas or natural gas at high pressures of 1 MPa or more are subject to the High Pressure Gas Safety Act. Therefore, based on the interpretation standards of the ministerial ordinance, except for those installed outside the vehicle body, they had to be separated from the passenger compartment with seats or standing room by an airtight partition and installed in a location with sufficient ventilation from the outside of the vehicle body.

[0007] In this regard, a structure in which the gas conduit is attached to the outside of the vehicle body is not desirable because it may cause damage to the gas conduit and has aesthetic problems. Therefore, in order to consider a structure in which the gas conduit is attached to the inside of the vehicle body, and in order to ensure airtightness with the passenger compartment and improve space efficiency inside the passenger compartment, a structure was conceived in which the gas conduit is placed near the side outer panel that constitutes the side structure, and a hollow bulkhead member is provided inside the vehicle body to surround the gas conduit and airtightly separate it from the passenger compartment.

[0008] In this case, it was necessary to create through-holes in the roof boards (eave girders) located at the upper end of the side structure for the partition wall members to pass through, and also to provide relief sections in the long girders that connect the rafters supporting the roof boards to the upper end of the side structure, allowing the partition wall members to pass through. However, since the long girders are structural members that connect the roof structure and the side structure, providing relief sections in the long girders tends to lead to a decrease in strength at the connection between the roof structure and the side structure.

[0009] The present invention was made to solve the above problems and aims to provide a railway vehicle and a method for manufacturing the railway vehicle, comprising a hollow bulkhead member that surrounds a gas conduit located near the side outer panel and airtightly separates it from the passenger compartment, and a reinforcing member that can easily reinforce a long girder having a relief section through which the bulkhead member passes. [Means for solving the problem]

[0010] To achieve the above objective, the railway vehicle and its manufacturing method according to the present invention have the following configuration. (1) A railway vehicle equipped with a gas conduit arranged between a high-pressure gas container mounted on a roof panel constituting the roof structure and a gas usage device installed below the floor panel constituting the underframe, The gas conduit is positioned near the side outer panel that constitutes the side structure, and the gas conduit is enclosed within the vehicle body to airtightly separate it from the passenger compartment. Furthermore, hollow bulkhead members are provided on the roof and under the floor to communicate with the outside of the vehicle. The long beam, which connects the ends of the rafters supporting the roof panel from below in the vehicle width direction to the upper end of the side structure and extends in the vehicle longitudinal direction, is provided with a relief section through which the bulkhead member penetrates in the vehicle vertical direction. The rafters adjacent to each other in the vehicle's longitudinal direction, with respect to the relief portion, are connected to each other by reinforcing members extending in the vehicle's longitudinal direction, at a position spaced apart from the bulkhead member toward the passenger compartment.

[0011] In this invention, gas conduits are arranged near the side outer panels that constitute the side structure, and the gas conduits are enclosed within the vehicle body to airtightly separate them from the passenger compartment. Furthermore, hollow bulkhead members are provided on the roof and under the floor that communicate with the outside of the vehicle. Therefore, in accordance with the interpretation standards of the ministerial ordinance under the High-Pressure Gas Safety Act, the gas conduits can be airtightly separated from the passenger compartment by the bulkhead members. In addition, since the bulkhead members communicate with the outside of the vehicle on the roof and under the floor, ventilation is possible between the hollow parts of the bulkhead members and the outside of the vehicle body, preventing gas from accumulating in the hollow parts of the bulkhead members. Moreover, because the gas conduits are arranged near the side outer panels that constitute the side structure, the bulkhead members surrounding the gas conduits are less likely to protrude into the passenger compartment, improving the space efficiency of the passenger compartment.

[0012] Furthermore, the ends of the rafters supporting the roof panels from below in the vehicle width direction are connected to the upper ends of the side structure, and the long girders extending in the vehicle's longitudinal direction are provided with relief sections through which the bulkhead members penetrate in the vehicle's vertical direction. As a result, the bulkhead members can extend vertically in the vehicle's vertical direction near the side outer panels. Therefore, there is no need to bend the bulkhead members, and they can be easily manufactured using pipes or the like.

[0013] Furthermore, since adjacent rafters in the vehicle's longitudinal direction, separated by the relief section, are connected to each other by reinforcing members extending in the vehicle's longitudinal direction at a position spaced apart from the bulkhead member toward the passenger compartment, the reduction in the strength of the long beam caused by the relief section can be compensated for by the reinforcing members connecting the rafters connected to the long beam across the relief section. In addition, since the reinforcing members connect the rafters at a position spaced apart from the bulkhead member toward the passenger compartment, the reinforcing members can be easily attached to the rafters in advance when manufacturing the roof structure.

[0014] Therefore, it is possible to provide a railway vehicle equipped with a hollow bulkhead member that surrounds a gas conduit located near the side outer panel and airtightly separates it from the passenger compartment, and a reinforcing member that can easily reinforce a long girder through which the bulkhead member passes.

[0015] (2) In the railway vehicles described in (1), The rafter and the reinforcing member are characterized by each comprising an upper flange portion joined to the lower surface of the roof board, a lower flange portion joined to the upper surface of the passenger compartment side flange portion of the long girder, and a connecting plate portion that connects the upper flange portion and the lower flange portion in a stepped manner.

[0016] In this invention, the rafter and the reinforcing member each have an upper flange portion joined to the lower surface of the roof board, a lower flange portion joined to the upper surface of the passenger compartment side flange portion of the long beam, and a connecting plate portion that connects the upper flange portion and the lower flange portion in a stepped manner. As a result, the rafter and the reinforcing member are joined in a state where they are sandwiched from above and below by the roof board and the passenger compartment side flange portion of the long beam. Therefore, the passenger compartment side flange portion of the long beam can be reinforced even more strongly through the rafter, the reinforcing member and the roof board.

[0017] (3)(2) In the railway vehicles described above, The upper flange portion of the reinforcing member is characterized by being joined to the vicinity of the vertical wall portion for the rain gutter of the roof board.

[0018] In this invention, the upper flange portion of the reinforcing member is joined to the vicinity of the vertical wall portion for the rain gutter of the roof panel. Therefore, the rigidity of the reinforcing member in the vertical direction of the vehicle can be further increased by the vertical wall portion for the rain gutter of the roof panel. As a result, the reduction in strength of the long beam due to the relief portion can be more effectively compensated for without increasing the plate thickness of the reinforcing member.

[0019] (4) In any of the railway vehicles described in (1) through (3), In the eaves beam formed on the vehicle outside of the vertical wall portion for the rain gutter of the roof panel, a through hole is formed in the upper end portion of the partition member so as to project upward of the vehicle, and a closing plate for closing the gap between the partition member and the through hole is joined.

[0020] In the present invention, in the eaves beam formed on the vehicle outside of the vertical wall portion for the rain gutter of the roof panel, a through hole is formed in the upper end portion of the partition member so as to project upward of the vehicle, and a closing plate for closing the gap between the partition member and the through hole is joined. Therefore, it is difficult for the partition member to project toward the passenger compartment side, and not only can the space efficiency of the passenger compartment be improved, but also rainwater falling on the roof panel is blocked by the vertical wall portion for the rain gutter and is difficult to flow into the hollow portion of the partition member. In addition, it is easy to avoid rain leakage from the joint portion between the eaves beam and the closing plate and the joint portion between the partition member and the closing plate, and corrosion of the joint portion.

[0021] (5) In the railway vehicle according to any one of (1) to (4), The partition member is formed into a flat cylindrical body that is long in the vehicle longitudinal direction and short in the vehicle width direction.

[0022] In the present invention, since the partition member is formed into a flat cylindrical body that is long in the vehicle longitudinal direction and short in the vehicle width direction, a plurality of gas conduits (for example, a supply gas conduit and a filling gas conduit) can be arranged and accommodated in the vehicle longitudinal direction. Therefore, while expanding the accommodation space of the partition member for the gas conduit, the amount of protrusion of the partition member toward the passenger compartment side can be reduced, and the space efficiency of the passenger compartment can be improved.

[0023] (6) In the method for manufacturing a railway vehicle according to any one of (1) to (5), A roof structure forming step of joining the purlin, the long girder, and the reinforcing member to form a roof skeleton, and then joining the roof panel to the roof skeleton to form the roof structure; After joining the roof structure and the side structure to form the vehicle body, a partition member mounting step of mounting the partition member on the vehicle body, characterized by comprising.

[0024] In this invention, the roof structure is formed by first joining rafters, girders, and reinforcing members to form a roof frame, and then joining roof panels to the roof frame to form a roof structure. Therefore, before joining the roof panels to the roof frame, the reduction in strength of the girders due to the relief section is compensated for by the reinforcing members, thereby forming a highly rigid roof frame. In this case, the rafters, girders, and reinforcing members can be joined easily and accurately without being obstructed by the roof panels, thereby forming a highly rigid roof frame. Furthermore, since the roof panels are joined to a highly rigid roof frame, a highly accurate roof structure can be easily formed.

[0025] Furthermore, since the system includes a bulkhead member attachment process in which the bulkhead members are attached to the vehicle body after the roof structure and side structure have been joined together, the bulkhead members can be attached to the vehicle body which has been formed with high precision. As a result, the bulkhead members can separate the gas conduit from the passenger compartment in an even more airtight manner.

[0026] Therefore, it is possible to provide a method for manufacturing a railway vehicle that includes a hollow bulkhead member that surrounds a gas conduit located near the side outer panel and airtightly separates it from the passenger compartment, and a reinforcing member that can easily reinforce a long girder with a relief section through which the bulkhead member passes. [Effects of the Invention]

[0027] According to the present invention, it is possible to provide a railway vehicle and a method for manufacturing the railway vehicle, which comprises a hollow bulkhead member that surrounds a gas conduit disposed near the side outer plate and airtightly separates it from the passenger compartment, and a reinforcing member that can easily reinforce a long girder having a relief portion through which the bulkhead member passes. [Brief explanation of the drawing]

[0028] [Figure 1] This is a schematic side view of a railway vehicle according to one embodiment of the present invention. [Figure 2] Figure 1 shows a view from arrow A, specifically a view from the side of the outer panel. [Figure 3] Figure 2 shows a cross-sectional view of BB, specifically a partial cross-section near the roof panel. [Figure 4] Figure 3 shows a cross-sectional view of CC. [Figure 5] Figure 4 is a partial perspective view of the connection between the rafter and the reinforcing member in section D. [Figure 6] Figure 1 shows a partial cross-sectional view illustrating the manufacturing process of a railway vehicle. (A) shows a partial cross-sectional view of the roof structure formation process, and (B) shows a partial cross-sectional view of the bulkhead member installation process. [Figure 7] This is a schematic side view of the railway vehicle described in Patent Document 1. [Modes for carrying out the invention]

[0029] <Composition of this railway vehicle> Next, a railway vehicle according to one embodiment of the present invention will be described in detail with reference to the drawings. Figure 1 shows a schematic side view of a railway vehicle according to one embodiment of the present invention. Figure 2 shows a partial view from arrow A in Figure 1, closer to the side outer panel. Figure 3 shows a partial cross-sectional view from BB in Figure 2, closer to the roof panel. Figure 4 shows a cross-sectional view CC in Figure 3. Figure 5 shows a partial perspective view of the connection between the rafter and the reinforcing member at section D in Figure 4.

[0030] As shown in Figure 1, the railway vehicle 10 is equipped with a gas conduit 4 arranged between a high-pressure gas container 1 mounted on a roof plate YK1 that constitutes the roof structure YK, and a gas usage device 3 installed below the floor plate 2 that constitutes the underframe DW. The railway vehicle 10 includes a pair of front and rear bogies DS that run on the rails RL, an underframe DW supported by the bogies DS, side structures GK that stand upright at both ends of the underframe DW in the vehicle width direction, end structures TK that stand upright at both ends of the underframe DW in the vehicle longitudinal direction, and a roof structure YK connected to the upper ends of the side structures GK and end structures TK. The underframe DW, side structures GK, end structures TK and roof structure YK constitute the outer shape of the car body ST. The side structures GK are also equipped with side windows GM, passenger side doors GT1 and crew side doors GT2. Various equipment KZ is suspended from the underframe DW.

[0031] The high-pressure gas container 1 is a gas container that stores, for example, a high-pressure gas 1G of about 30 MPa to 70 MPa, and in this embodiment, there are multiple containers (two in this case). Hydrogen gas, natural gas, etc., can be stored in the high-pressure gas container 1. In this example, the high-pressure gas 1G stored in the high-pressure gas container 1 is hydrogen gas, but it is not necessarily limited to this. The gas usage device 3 is a fuel cell that generates electricity using hydrogen gas and oxygen gas supplied from the high-pressure gas container 1, but it is not necessarily limited to this. In this embodiment, the oxygen gas used in the fuel cell is recovered from the air, but high-pressure gas containers and gas conduits for supplying oxygen gas may also be provided in the railway vehicle 10, similar to hydrogen gas.

[0032] As shown in Figures 1 to 3, the gas conduit 4 includes, for example, a supply gas conduit 4a for supplying gas 1G from a high-pressure gas container 1 to a gas user 3, and a filling gas conduit 4b for filling the high-pressure gas container 1 with gas 1G. In this case, the connection between the high-pressure gas container 1 and the gas conduits 4 (4a, 4b) is equipped with, for example, shut-off valves 42 (42a, 42b), branch pipes 43, connecting pipes 44 (44a, 44b), and pressure reducing valves 45 (45a, 45b). The shut-off valves 42 (42a, 42b) are valves that block the flow of gas 1G in the gas conduits 4 (4a, 4b) and are installed at the upper ends 41 (41a, 41b) of each of the supply and filling gas conduits 4 (4a, 4b). The shut-off valves 42 (42a, 42b) can be opened and closed, for example, by solenoid valves.

[0033] When supplying gas 1G to the gas usage device 3, the supply shut-off valve 42a is opened and the filling shut-off valve 42b is closed. When filling the high-pressure gas container 1 with gas 1G, the filling shut-off valve 42b is opened and the supply shut-off valve 42a is closed. The high-pressure gas 1G stored in the high-pressure gas container 1 is reduced to a predetermined pressure (for example, about 1 MPa) by the pressure reducing valve 45 (45a, 45b), etc., and supplied to the gas usage device 3 via the connecting pipe 44 (44a, 44b), branch pipe 43, supply shut-off valve 42a, and supply gas conduit 4a.

[0034] Here, the gas conduit 4 includes a supply gas conduit 4a and a filling gas conduit 4b, but it is not necessarily limited to this. For example, a switching valve may be provided between the gas usage device 3 and a gas filling port (not shown), allowing the supply gas conduit 4a and the filling gas conduit 4b to be used together in a single gas conduit 4.

[0035] Gas conduits 4 (4a, 4b) are installed near the side outer panel GK1 that constitutes the side structure GK. The gas conduits 4 (4a, 4b) are installed along the side outer panel GK1 that constitutes the side structure GK, passing through the side window GM's junction HY, and extending to below the floor plate 2 of the underframe DW. Through holes 21 are formed in the floor plate 2 of the underframe DW through which the gas conduits 4 pass. Transverse ribs (not shown) extending in the vehicle's longitudinal direction are joined to the side outer panel GK1, and these transverse ribs are connected to longitudinal ribs (not shown) extending in the vehicle's vertical direction.

[0036] The vehicle body ST is equipped with a hollow bulkhead member 6 that encloses the gas conduits 4 (4a, 4b) and airtightly separates them from the passenger compartment 5, while also communicating with the outside of the vehicle on the roof and under the floor. Therefore, in accordance with the interpretation standards of the ministerial ordinance under the High Pressure Gas Safety Act, the gas conduits 4 (4a, 4b) can be airtightly separated from the passenger compartment 5 by the bulkhead member 6. Furthermore, since the bulkhead member 6 communicates with the outside of the vehicle on the roof and under the floor, the hollow portion 6T of the bulkhead member 6 can ventilate with the outside of the vehicle body ST, so even if gas 1G leaks from the gas conduits 4 (4a, 4b), the accumulation of gas 1G in the hollow portion 6T of the bulkhead member 6 can be avoided. The upper end 611 of the bulkhead member 6 is open on the roof, and the lower end of the bulkhead member 6 is joined to the floor plate 2 around the through-hole 21 through which the gas conduits 4 pass, and is open under the floor.

[0037] Since the gas conduits 4 (4a, 4b) are arranged near the side outer panel GK1 that constitutes the side structure GK, the bulkhead members 6 surrounding the gas conduits 4 (4a, 4b) are less likely to protrude toward the passenger compartment 5, thereby improving the space efficiency of the passenger compartment 5. The passenger compartment 5 includes an interior panel 51 installed at a predetermined distance from the side outer panel GK1, a ceiling panel 52 installed below the roof structure YK, and a passenger compartment floor and seats (not shown).

[0038] A rain gutter YK10, with a grooved section formed near the side structure GK, extends in the longitudinal direction of the vehicle from the roof panel YK1. A through hole YK121 is formed in the eaves beam YK12, which is located on the outside of the vehicle from the vertical wall section YK11 for the rain gutter on the roof panel YK1, through which the upper end 611 of the bulkhead member 6 protrudes upward. A sealing plate YK13 is joined to the upper surface of the eaves beam YK12 to close the gap between the bulkhead member 6 and the through hole YK121. The sealing plate YK13 is joined to the eaves beam YK12 and the bulkhead member 6, for example, by fillet welding.

[0039] Here, a through hole YK121 is formed in the eaves beam YK12, which is formed on the outside of the vehicle from the vertical wall section YK11 for the rain gutter of the roof panel YK1, through which the upper end portion 611 of the bulkhead member 6 protrudes upward towards the vehicle. As a result, the bulkhead member 6 is less likely to protrude toward the passenger compartment 5, improving the space efficiency of the passenger compartment 5. In addition, rainwater falling on the roof panel YK1 is blocked by the vertical wall section YK11 for the rain gutter, making it difficult for it to flow into the hollow portion 6T of the bulkhead member 6, which is joined to the eaves beam YK12 via a sealing plate YK13. Furthermore, it is easier to avoid water leakage and corrosion of the joints between the eaves beam YK12 and the sealing plate YK13, and between the bulkhead member 6 and the sealing plate YK13.

[0040] Preferably, the bulkhead member 6 is formed as a flat, cylindrical body 6H that is long in the vehicle's longitudinal direction and short in the vehicle's width direction. Here, the bulkhead member 6 is formed as a cylindrical body 6H with a rectangular cross-section, in which the vertical wall portion 61 extends linearly in the vehicle's vertical direction. Therefore, multiple gas conduits 4 (for example, a supply gas conduit 4a and a filling gas conduit 4b) can be arranged and accommodated in the vehicle's longitudinal direction. As a result, the accommodation space of the bulkhead member 6 (6H) relative to the gas conduits 4 can be expanded while reducing the amount of protrusion of the bulkhead member 6 (6H) toward the passenger compartment 5, thereby improving the space efficiency of the passenger compartment 5.

[0041] The long girder 8, which extends in the longitudinal direction of the vehicle and connects the vehicle width direction ends 7T of multiple rafters 7 that support the roof panel YK1 from below to the upper end GKJ of the side structure GK, is provided with a relief section 81 through which the bulkhead member 6 penetrates in the vertical direction of the vehicle. As a result, the bulkhead member 6 can be extended vertically in the vertical direction of the vehicle near the side outer panel GK1. Consequently, there is no need to bend the vertical wall portion 61 of the bulkhead member 6, and it can be easily manufactured using pipes or the like.

[0042] The long girder 8 comprises an outer flange portion 83 joined to the upper end GKJ of the side structure GK, an inner flange portion 82 joined to the vehicle width end 7T of the rafter 7, and a connecting plate portion 84 connecting the outer flange portion 83 and the inner flange portion 82. The outer flange portion 83, the connecting plate portion 84, and the inner flange portion 82 are formed in a roughly Z-shaped cross section. The relief portion 81 is cut parallel to the connecting plate portion 84 and the inner flange portion 82 from near the intersection where the outer flange portion 83 intersects with the connecting plate portion 84, and is formed as a U-shaped notch overall. (In the cross-section of Figure 3, most of the outer flange portion 83 of the long girder 8 remains, while the connecting plate portion 84 and the passenger compartment side flange portion 82 are cut off.) Also, the passenger compartment side flange portion 82 of the long girder 8 and the upper end portion GK21 are joined to a support plate GK2, which is connected to the upper end portion GKJ of the side structure GK via a bracket GK3. The vertical wall portion 61 of the bulkhead member 6 is positioned on the outside of the passenger compartment than the support plate GK2.

[0043] As shown in Figures 2 to 5, adjacent rafters 7 in the vehicle's longitudinal direction, separated by a relief section 81 of the long girder 8, are connected to each other by reinforcing members 9 that extend in the vehicle's longitudinal direction, at a position spaced apart from the bulkhead member 6 toward the passenger compartment 5. Therefore, the reinforcing members 9 that connect the rafters 7 connected to the long girder 8 across the relief section 81 can compensate for the reduction in strength of the long girder 8 caused by the relief section 81. Furthermore, since the reinforcing members 9 connect the rafters 7 at a position spaced apart from the bulkhead member 6 toward the passenger compartment 5, the reinforcing members 9 can be easily attached to the rafters 7 in advance when manufacturing the roof structure YK.

[0044] Therefore, a railway vehicle 10 can be provided that includes a hollow bulkhead member 6 that surrounds a gas conduit 4 located near the side outer panel GK1 and airtightly separates it from the passenger compartment 5, and a reinforcing member 9 that can easily reinforce a long girder 8 through which the bulkhead member 6 passes.

[0045] In this railway vehicle 10, the rafters 7 and reinforcing members 9 each have upper flange portions 71 and 91 joined to the lower surface of the roof panel YK1, lower flange portions 72 and 92 joined to the upper surface of the passenger compartment side flange portion 82 of the long girder 8, and connecting plate portions 73 and 93 that connect the upper flange portions 71 and 91 and the lower flange portions 72 and 92 in a stepped manner. In this case, the rafters 7 and reinforcing members 9 are joined by being sandwiched from above and below by the roof panel YK1 and the passenger compartment side flange portion 82 of the long girder 8.

[0046] Therefore, the passenger compartment-side flange portion 82 of the long girder 8 can be further reinforced via the rafters 7, reinforcing members 9, and roof panels YK1. The rafters 7 are formed in a curved shape along the roof panels YK1 in the vehicle width direction, but they are equipped with an upper flange portion 711 that protrudes downward from the upper end flange portion 71 and a lower flange portion 721 that protrudes upward from the lower end flange portion 72, thereby increasing the rigidity as a beam while suppressing the occurrence of springback in the curved shape of the rafters 7. The upper end flange portion 71 of the rafters 7, which is formed on the outside of the vehicle from the rain gutter vertical wall portion YK11, is connected to the outside flange portion 83 of the long girder 8 via a trapezoidal connecting plate 74.

[0047] The upper flange portion 91 and connecting plate portion 93 of the reinforcing member 9 have notches 94 formed so as not to interfere with the upper flange portion 71 and upper flange portion 711 of the rafter 7, and the rafter 7 and the reinforcing member 9 are welded along the notches 94. In addition, the connecting plate portion 93 of the reinforcing member 9 has a connecting flange portion 931 that is connected to the connecting plate portion 73 of the rafter 7. The connecting plate portion 73 of the rafter 7 and the connecting flange portion 931 of the reinforcing member 9 are welded together, for example, with a plug. The notches 94 are formed in an L-shape in both the view in the vehicle's front-rear direction and the view in the vehicle's width direction.

[0048] In this railway vehicle 10, the upper flange portion 91 of the reinforcing member 9 is joined to the vicinity of the vertical wall portion YK11 for the rain gutter of the roof plate YK1. That is, the upper flange portion 91 of the reinforcing member 9 is joined to the bottom of the rain gutter YK10 adjacent to the vertical wall portion YK11 for the rain gutter of the roof plate YK1. Therefore, the rigidity of the reinforcing member 9 in the vertical direction of the vehicle can be further increased by the vertical wall portion YK11 for the rain gutter of the roof plate YK1. As a result, the reduction in strength of the long girder 8 due to the relief portion 81 can be more effectively compensated for without increasing the plate thickness of the reinforcing member 9.

[0049] <Manufacturing method for this railway vehicle> Next, the manufacturing method of the railway vehicle 10 will be explained in detail with reference to Figures 1 to 6. Figure 6 shows a partial cross-sectional view representing the manufacturing process of the railway vehicle shown in Figure 1. Figure 6(A) shows a partial cross-sectional view of the roof structure formation process, and Figure 6(B) shows a partial cross-sectional view of the bulkhead member installation process.

[0050] As shown in Figures 1 to 6, the manufacturing method for the railway vehicle 10 includes a roof structure forming step S1 in which a roof frame YKK is formed by joining rafters 7, long girders 8 and reinforcing members 9, and then a roof panel YK1 is joined to the roof frame YKK to form a roof structure YK, and a bulkhead member mounting step S2 in which a bulkhead member 6 is attached to the car body ST after joining the roof structure YK and side structure GK.

[0051] (Roof structure formation process: S1) First, the rafters 7, girders 8, and reinforcing members 9 are joined to form the YKK roof frame. The YKK roof frame can be formed, for example, by the following procedure. Specifically, the girders 8 on the left and right sides of the vehicle are set in predetermined positions on a jig, and the lower end flanges 72 at the vehicle-width ends 7T of the rafters 7, which are arranged at predetermined intervals, are joined to the upper surface of the vehicle-side flange 82 of the girders 8. Also, the lower end flanges 92 of the reinforcing members 9 are joined to the upper surface of the vehicle-side flange 82 of the girders 8 between adjacent rafters 7 separated by a relief portion 81. Next, the connecting plate portion 73 of the rafters 7 and the connecting flange portion 931 of the reinforcing members 9 are joined, and the rafters 7 and reinforcing members 9 are joined along the notches 94. Then, the upper end flange portion 71 at the vehicle-width end 7T of the rafters 7 is connected to the vehicle-side flange portion 83 of the girders 8 via a trapezoidal connecting plate 74. The roof frame YKK can be formed using the above procedure.

[0052] Next, the roof panels YK1 are joined to the roof frame YKK to form the roof structure YK. Specifically, the upper flange portion 71 of the rafters 7 is joined to the roof panels YK1, and the outer end YK122 of the eaves beam YK12 is joined to the outer end 831 of the outer flange portion 83 of the long beam 8. Here, since the outer end YK122 of the eaves beam YK12 extends downward from the outer end 831 of the outer flange portion 83 of the long beam 8, fillet welding can be performed at the step between the two.

[0053] As described above, since the roof structure is formed by joining the rafters 7, the long girders 8, and the reinforcing members 9 to form the roof frame YKK, and then joining the roof panels YK1 to the roof frame YKK in a roof structure YK step S1, the reduction in strength of the long girders 8 due to the relief portion 81 can be compensated for by the reinforcing members 9 to form the roof frame YKK before joining the roof panels YK1 to the roof frame YKK. In this case, the rafters 7, the long girders 8, and the reinforcing members 9 can be joined easily and accurately without being obstructed by the roof panels YK1, forming a highly rigid roof frame YKK. Then, since the roof panels YK1 are joined to the highly rigid roof frame YKK, a highly accurate roof structure YK can be easily formed.

[0054] (Partition wall member installation process: S2) The process includes a bulkhead member attachment step S2 in which, after the roof structure YK and the side structure GK are joined to form the vehicle body ST, the bulkhead member 6 is attached to the vehicle body ST. First, the vehicle body ST is formed in the following procedure. Specifically, the side structure GK is joined to the vehicle width direction end of the underframe DW, the end structure TK is joined to the vehicle longitudinal direction end of the underframe DW, and the vehicle longitudinal direction end of the side structure GK is joined to the vehicle width direction end of the end structure TK. Next, the roof structure YK and the side structure GK are joined. Specifically, the upper end GK21 of the receiving plate GK2, which is connected to the upper end GKJ of the side structure GKK via a bracket GK3, is joined to the vehicle compartment side flange portion 82 of the long girder 8. This joining can be done, for example, by plug welding. Then, at the upper end GKJ of the side structure GK, the side outer plate GK1, the outer end YK122 of the eaves girder YK12, and the outer end 831 of the outer flange portion 83 of the long girder 8 are joined. This joining can be done, for example, by fillet welding. By following the above procedure, the vehicle body ST can be formed with high precision.

[0055] Next, the bulkhead member 6 is attached to the vehicle body ST using the following procedure. Specifically, the bulkhead member 6 is inserted through the through hole YK121 formed in the eaves beam YK12, and the lower end of the bulkhead member 6 is joined to the floor plate 2 of the underframe DW around the through hole 21 of the gas conduit 4. Then, a sealing plate YK13, which closes the gap between the through hole YK121 of the eaves beam YK12 and the upper end 611 of the bulkhead member 6, is joined to the upper end 611 of the bulkhead member 6 and the upper surface of the eaves beam YK12. This joining can be done, for example, by fillet welding. As described above, since the bulkhead member 6 is joined to the floor plate 12 at its lower end and to the eaves beam YK12 at its upper end 611, the bulkhead member 6 can be airtightly attached to the vehicle compartment 5 on a precisely formed vehicle body ST. Therefore, the bulkhead member 6 can airtightly partition the gas conduit 4 from the vehicle compartment 5.

[0056] Therefore, it is possible to provide a method for manufacturing a railway vehicle 10 that includes a hollow bulkhead member 6 that surrounds a gas conduit 4 located near the side outer panel GK1 and airtightly separates it from the passenger compartment 5, and a reinforcing member 9 that can easily reinforce a long girder 8 through which the bulkhead member 6 passes.

[0057] <Effects and Effects> As described in detail above, the railway vehicle 10 according to this embodiment has a gas conduit 4 located near the side outer panel GK1 that constitutes the side structure GK, and the gas conduit 4 is enclosed within the vehicle body ST, airtightly separating it from the passenger compartment 5. Furthermore, a hollow bulkhead member 6 is provided on the roof and under the floor that communicates with the outside of the vehicle. Therefore, in accordance with the interpretation standards of the ministerial ordinance under the High Pressure Gas Safety Act, the gas conduit 4 can be airtightly separated from the passenger compartment 5 by the bulkhead member 6. In addition, since the bulkhead member 6 communicates with the outside of the vehicle on the roof and under the floor, ventilation is possible between the hollow portion 6T of the bulkhead member 6 and the outside of the vehicle body ST, preventing gas from accumulating in the hollow portion 6T of the bulkhead member 6. Moreover, since the gas conduit 4 is located near the side outer panel GK1 that constitutes the side structure GK, the bulkhead member 6 that encloses the gas conduit 4 is less likely to protrude towards the passenger compartment 5, thereby improving the space efficiency of the passenger compartment 5.

[0058] The long girder 8, which extends in the vehicle's width direction and connects the vehicle's widthwise ends 7T of the multiple rafters 7 that support the roof panel YK1 from below to the upper end GKJ of the side structure GK, is provided with a relief section 81 through which the bulkhead member 6 penetrates in the vehicle's vertical direction. As a result, the bulkhead member 6 can extend vertically in the vehicle's vertical direction near the side outer panel GK1. Therefore, there is no need to bend the bulkhead member 6, and it can be easily manufactured using pipes or the like.

[0059] Since adjacent rafters 7 in the vehicle's longitudinal direction, with the relief section 81 in between, are connected to each other by reinforcing members 9 that extend in the vehicle's longitudinal direction at a position spaced apart from the bulkhead member 6 toward the passenger compartment 5, the reinforcing members 9 that connect the rafters 7 connected to the long girder 8 with the relief section 81 in between can compensate for the reduction in strength of the long girder 8 caused by the relief section 81. Furthermore, since the reinforcing members 9 connect the rafters 7 at a position spaced apart from the bulkhead member 6 toward the passenger compartment 5, the reinforcing members 9 can be easily attached to the rafters 7 in advance when manufacturing the roof structure YK.

[0060] Therefore, according to this embodiment, it is possible to provide a railway vehicle 10 that includes a hollow bulkhead member 6 that surrounds a gas conduit 4 located near the side outer plate GK1 and airtightly separates it from the passenger compartment 5, and a reinforcing member 9 that can easily reinforce the long girder 8 through which the bulkhead member 6 passes.

[0061] According to this embodiment, the rafter 7 and the reinforcing member 9 each have upper end flange portions 71 and 91 joined to the lower surface of the roof board YK1, lower end flange portions 72 and 92 joined to the upper surface of the passenger compartment side flange portion 82 of the long beam 8, and connecting plate portions 73 and 93 that connect the upper end flange portions 71 and 91 and the lower end flange portions 72 and 92 in a stepped manner. As a result, the rafter 7 and the reinforcing member 9 are joined in a state where they are sandwiched from above and below by the roof board YK1 and the passenger compartment side flange portion 82 of the long beam 8. Therefore, the passenger compartment side flange portion 82 of the long beam 8 can be reinforced even more strongly via the rafter 7, the reinforcing member 9 and the roof board YK1.

[0062] According to this embodiment, the upper flange portion 91 of the reinforcing member 9 is joined near the vertical wall portion YK11 for the rain gutter of the roof plate YK1. Therefore, the rigidity of the reinforcing member 9 in the vehicle's vertical direction can be further increased by the vertical wall portion YK11 for the rain gutter of the roof plate YK1. As a result, the reduction in strength of the long beam 8 due to the relief portion 81 can be more effectively compensated for without increasing the plate thickness of the reinforcing member 9.

[0063] According to this embodiment, a through hole YK121 is formed in the eaves beam YK12, which is formed on the outside of the vehicle from the vertical wall portion YK11 for the rain gutter of the roof panel YK1, through which the upper end portion 611 of the bulkhead member 6 protrudes upward toward the vehicle. A sealing plate YK13 is joined to close the gap between the bulkhead member 6 and the through hole YK121, so that the bulkhead member 6 does not easily protrude toward the passenger compartment 5, and the space efficiency of the passenger compartment 5 can be improved. In addition, rainwater falling on the roof panel YK1 is blocked by the vertical wall portion YK11 for the rain gutter, making it difficult for it to flow into the hollow portion 6T of the bulkhead member 6. Furthermore, it is easier to avoid water leakage from the joint between the eaves beam YK12 and the sealing plate YK13, and from the joint between the bulkhead member 6 and the sealing plate YK13, as well as corrosion of each joint.

[0064] According to this embodiment, the bulkhead member 6 is formed as a flat cylindrical body 6H that is long in the vehicle's longitudinal direction and short in the vehicle's width direction, so that multiple gas conduits 4 (for example, a supply gas conduit 4a and a filling gas conduit 4b) can be arranged and accommodated in the vehicle's longitudinal direction. Therefore, the accommodation space of the bulkhead member 6 (6H) relative to the gas conduits 4 can be expanded while reducing the amount of protrusion of the bulkhead member 6 (6H) toward the passenger compartment 5, thereby improving the space efficiency of the passenger compartment 5.

[0065] In the manufacturing method of a railway vehicle according to another embodiment, the method includes a roof structure forming step S1 in which the rafters 7, long girders 8, and reinforcing members 9 are joined to form a roof frame YKK, and then the roof panels YK1 are joined to the roof frame YKK to form a roof structure YK. In this case, the reduction in strength of the long girders 8 due to the relief portion 81 can be compensated for by the reinforcing members 9 to form the roof frame YKK before joining the roof panels YK1 to the roof frame YKK. In this case, the rafters 7, long girders 8, and reinforcing members 9 can be joined easily and accurately without being obstructed by the roof panels YK1 to form a highly rigid roof frame YKK. Then, since the roof panels YK1 are joined to the highly rigid roof frame YKK, a highly accurate roof structure YK can be easily formed.

[0066] According to this other embodiment, after joining the roof structure YK and the side structure GK to form the vehicle body ST, a bulkhead member attachment step S2 is provided in which the bulkhead member 6 is attached to the vehicle body ST. As a result, the bulkhead member 6 can be attached to the vehicle body ST which has been formed with high precision. Therefore, the bulkhead member 6 can partition the gas conduit 4 from the passenger compartment 5 in an even more airtight manner.

[0067] Therefore, according to this other embodiment, it is possible to provide a method for manufacturing a railway vehicle 10 comprising a hollow bulkhead member 6 that surrounds a gas conduit 4 located near the side outer plate GK1 and airtightly separates it from the passenger compartment 5, and a reinforcing member 9 that can easily reinforce a long girder 8 through which the bulkhead member 6 passes.

[0068] <Variation> It goes without saying that the present invention can be modified in various forms without changing its essence. In the railway vehicle 10 of this embodiment, the relief portion 81 of the long girder 8 through which the bulkhead member 6 passes is formed by cutting parallel to the connecting plate portion 84 and the passenger compartment side flange portion 82 from near the intersection where it intersects with the connecting plate portion 84 of the outer flange portion 83, and is notched in a U-shape overall. However, the relief portion 81 of the long girder 8 does not necessarily have to be notched in the above U-shape. The relief portion 81 of the long girder 8 may be formed, for example, as a through hole through which the bulkhead member 6 passes.

[0069] The railway vehicle 10 and its manufacturing method described above are described as a railway vehicle and its manufacturing method in which a gas conduit 4 is arranged near the side outer panel GK1 constituting the side structure GK, the gas conduit 4 is enclosed within the car body ST to airtightly separate it from the passenger compartment 5, and a hollow bulkhead member 6 is provided on the roof and under the floor to communicate with the outside of the vehicle. However, it is not necessarily limited to this, and for example, a railway vehicle and its manufacturing method may also be provided in which a gas conduit 4 is arranged near the end outer panel constituting the end structure TK, the gas conduit 4 is enclosed within the car body ST to airtightly separate it from the passenger compartment 5, and a hollow bulkhead member 6 is provided on the roof and under the floor to communicate with the outside of the vehicle. [Industrial applicability]

[0070] The present invention can be used as a railway vehicle equipped with a bulkhead member that encloses a gas conduit arranged between a high-pressure gas container mounted on the roof and a gas usage device installed under the floor, and airtightly partitions it from the passenger compartment, and as a method for manufacturing the railway vehicle. [Explanation of Symbols]

[0071] 1. High-pressure gas container 2 floorboards 3. Gas-using equipment, fuel cells 4 Gas pipelines 5 Cabin 6. Partition Member 6H cylindrical body 6T hollow part 7 Rafters 7T end 8 long digits 9 Reinforcement members 10 Railway vehicles 21 Through hole 71, 91 Upper flange portion 72, 92 Lower end flange section 73, 93 Connecting plate section 81 Escape Club 611 Upper end DW frame GK side structure GKJ upper end GK1 Side Panel S1 Roof structure formation process S2 Partition wall member installation process ST body YK Roof Structure YKK roof frame YK1 Roof Panel YK11 Vertical wall section for rain gutters YK12 eave girder YK13 Blocking Plate YK121 Through Hole

Claims

1. A railway vehicle equipped with a gas conduit arranged between a high-pressure gas container mounted on a roof panel constituting the roof structure and a gas usage device installed below the floor panel constituting the underframe, A railway vehicle characterized by having the gas conduits arranged near the side outer panels constituting the side structure or the end outer panels constituting the end structure, the gas conduits being enclosed within the vehicle body to airtightly separate them from the passenger compartment, and having hollow bulkhead members on the roof and under the floor that communicate with the outside of the vehicle.

2. In the railway vehicle described in claim 1, The long beam, which connects the ends of the rafters supporting the roof panel from below in the vehicle width direction to the upper end of the side structure and extends in the vehicle longitudinal direction, is provided with a relief section through which the bulkhead member penetrates in the vehicle vertical direction. A railway vehicle characterized in that adjacent rafters in the longitudinal direction of the vehicle, separated by the relief portion, are connected to each other by reinforcing members extending in the longitudinal direction of the vehicle at a position spaced apart from the bulkhead member toward the passenger compartment.

3. In the railway vehicle described in claim 2, A railway vehicle characterized in that the rafter and the reinforcing member each include an upper flange portion joined to the lower surface of the roof board, a lower flange portion joined to the upper surface of the passenger compartment side flange portion of the long girder, and a connecting plate portion that connects the upper flange portion and the lower flange portion in a stepped manner.

4. In the railway vehicle described in claim 3, A railway vehicle characterized in that the upper flange portion of the reinforcing member is joined to the vicinity of the vertical wall portion for the rain gutter of the roof panel.

5. In the railway vehicle described in claim 2, A railway vehicle characterized in that a through hole is formed in the eaves beam, which is formed on the outside of the vehicle from the vertical wall portion for the rain gutter of the roof board, through which the upper end of the bulkhead member protrudes upward toward the vehicle, and a sealing plate is joined to close the gap between the bulkhead member and the through hole.

6. In the railway vehicle described in claim 2, The aforementioned bulkhead member is formed as a flat, cylindrical body that is long in the longitudinal direction of the vehicle and short in the width direction of the vehicle.

7. In the method for manufacturing a railway vehicle according to any one of claims 2 to 6, A roof structure formation step is to form the roof frame by joining the rafters, the long beams, and the reinforcing members, and then joining the roof panels to the roof frame to form the roof structure, A method for manufacturing a railway vehicle, comprising: a bulkhead member attachment step of attaching the bulkhead member to the vehicle body after joining the roof structure and the side structure to form the vehicle body.

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