Railway vehicle

Abstract

To provide a structure enabling easy manufacturing while ensuring airtightness of a cylindrical space when the space surrounded by a base frame, a floor receiver, and a guest room floor is used as an air duct in order to increase a ventilation area and reduce weight of an air-conditioning duct of a railway vehicle.SOLUTION: The floor structure of a railway vehicle includes floor receivers having elastic bodies between the floor receivers and a base frame and between adjacent floor receivers in a vehicle longitudinal direction, and an inspection plate installed in a space from a floor plate in the vehicle longitudinal direction. Thus, the elastic bodies cover gaps between the base frame and the floor receivers and a gap between the adjacent floor receivers. A floor bedding bonded onto the floor plate and the inspection plate seals a gap between the floor plate and the inspection plate. The airtightness of a cylindrical space surrounded by the base frame, the floor receiver, and the guest room floor is ensured. Thus, an air duct can be easily constructed.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a railway vehicle having a duct structure for blowing conditioned air from an air conditioning system and recirculated air from inside the vehicle, which duct structure can be easily manufactured while ensuring airtightness. [Background technology]

[0002] Railway vehicles are equipped with ventilation systems and air conditioning systems (hereinafter referred to as air conditioning systems) to improve thermal comfort within the passenger compartment. The air conditioning system mixes recirculated air taken in from inside the railway vehicle with fresh air taken in by the ventilation system, and in the process of passing the air through an indoor heat exchanger, generates conditioned air by harmonizing the temperature and humidity of the recirculated air and the fresh air, and supplies the conditioned air to the interior of the railway vehicle. At this time, the conditioned air sent out from the air conditioning system and the recirculated air taken in from inside the vehicle are sent to the entire vehicle through air conditioning ducts installed in the longitudinal direction of the vehicle, the conditioned air is blown into the vehicle from an air outlet, and the recirculated air is sucked into the air conditioning system.

[0003] Conventionally, air conditioning ducts for railway vehicles are installed between the underframe, which is the floor part of the structure that constitutes the car body, and the passenger compartment floor, which is installed via a floor support erected on the underframe, as described in Patent Document 1. In the space between the underframe and the passenger compartment floor, a conditioned air duct for flowing conditioned air from the air conditioning device to the car interior and a recirculation air duct for returning circulated air from the car interior to the air conditioning device are arranged symmetrically in pairs, and an exhaust duct for flowing air from the car interior to the ventilation device is arranged in the center.

[0004] Equipment such as an air conditioner is mounted so as to be suspended under the floor, and an air conditioning duct provided in the longitudinal direction of the vehicle is connected by an air conditioning duct and a ventilation duct. The air conditioning duct is composed of duct members formed by bending an aluminum plate or the like into a rectangle, and the duct members are installed between floor supports arranged between the underframe and the passenger compartment floor, and are connected via metal supports protruding from the floor supports and duct supports. In the air conditioning duct through which cooled or heated conditioned air flows, a dew condensation prevention agent is applied around the duct members to prevent dew condensation.

[0005] Challenges with such air conditioning ducts include the difficulty of ensuring sufficient ventilation area due to the narrow, limited space between the underframe and the passenger compartment floor, and the fact that the duct components, made of metals such as aluminum plates, extend in the longitudinal direction of the vehicle, preventing the vehicle from becoming lighter.

[0006] To solve these problems, for example, Patent Document 2 shows a technology for constructing an air conditioning duct by attaching an airtight insulating material to the inner surface of the space surrounded by the underframe, which is the main structure of the car body, the floor support erected on the underframe, and the passenger compartment floor installed through the floor support. This makes it possible to make the ventilation area significantly larger than before by making maximum use of the space between the underframe and the passenger compartment floor, which form a double floor structure, as an air passage. In addition, by omitting metal members and other components that constitute the conventional duct, it is possible to reduce the weight of the car. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 5-270403 [Patent Document 2] Patent No. 4531598 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the air conditioning duct described in Patent Document 2, in order to ensure airtightness in the air duct, heat insulating material is attached to the entire cylindrical space surrounded by the above-mentioned underframe, floor support, and passenger compartment floor in the longitudinal direction of the vehicle, so the surface area to which the heat insulating material is attached is wide and the work requires checking for air leaks, which takes a lot of work time. Therefore, in order to reduce the cost of manufacturing railway cars, it is desirable to simplify the manufacturing of the air duct structure and the confirmation of its airtightness.

[0009] In addition, the above-mentioned passenger compartment floors and floor supports are not integrated in the entire longitudinal direction in the assembly method, but are divided and arranged on the frame, so that air in the air ducts may leak from gaps between adjacent passenger compartment floors or floor supports depending on the construction conditions. Therefore, it is desirable to have a structure that makes it difficult for air to leak from gaps between adjacent passenger compartment floors or floor supports, and a structure that allows the construction conditions of such gaps to be checked during vehicle assembly.

[0010] Therefore, in order to solve such problems, the present invention aims to provide a railway vehicle having a duct structure that utilizes the space between the frame and the passenger compartment floor, which form a double floor structure, as an air passage and is easy to manufacture while ensuring the airtightness of the air passage. [Means for solving the problem]

[0011] The railway vehicle of the present invention has a floor structure in which floor panels, which form the floor of the passenger compartment, and floor supports extending in the longitudinal direction of the vehicle and fastening to the floor panels to support the floor panels, are installed on an underframe, which is the main structure of the car body, and the floor supports have elastic bodies between the parts where they contact the underframe and the adjacent floor supports in the longitudinal direction of the vehicle, and the length of the floor supports in the longitudinal direction of the vehicle is longer than the floor panels, and an inspection plate is installed in the parts of the floor supports that are not fastened to the floor panels so as to fill the gap between adjacent floor panels, forming an air conditioning duct in the space surrounded by the underframe, floor panels, floor supports and inspection plate, and the elastic bodies fill the gaps between the underframe and the floor supports and between the adjacent floor supports, and a mat adhered to the floor panels and inspection plates seals the gaps between the floor panels and the inspection plate, thereby ensuring the airtightness of the air conditioning duct and forming an air passage.

[0012] In addition, the railway vehicle of the present invention is characterized in that the floor supports are erected on the underframe at a predetermined interval in the vehicle width direction, and a plurality of air ducts separated by a plurality of the floor supports are formed in the vehicle width direction between the underframe and the floor plate.

[0013] In addition, the railway vehicle of the present invention is characterized in that the inspection plate is installed on the lower end of the floor plate in addition to the floor support and is fastened to the floor plate so as to fill the gap between the floor plate and the inspection plate.

[0014] In addition, the railway vehicle of the present invention is characterized in that it has a floor support that has not only an elastic body between the floor supports adjacent to each other in the longitudinal direction of the vehicle, but also a joint plate that protrudes toward the inside of the air duct toward the floor supports adjacent to each other in the longitudinal direction of the vehicle so as to hide the gap between the floor supports. Effect of the Invention

[0015] According to the railway vehicle of the present invention, the floor supports fill the gaps between the underframe and the floor supports, between the floor supports and the floor panels, and between adjacent floor supports, and the floor covering fills the gaps between adjacent floor panels and the inspection panel, making it easy to ensure airtightness of the cylindrical space surrounded by the underframe, floor supports, floor panels, and inspection panel, and to utilize the space as an air passage. This makes it easy to manufacture the duct structure, leading to a significant reduction in manufacturing man-hours and cost reduction.

[0016] In addition, since the space between the frame of the double-floor structure and the passenger compartment floor can be used to the maximum extent as an air passage, the duct area can be significantly increased compared to conventional methods. Also, by eliminating the metal components that make up the ducts used in conventional methods, it is possible to reduce the weight of the vehicle. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a side view of a railway vehicle. [Diagram 2] FIG. 2 is a cross-sectional view showing the configuration of a recirculation air duct provided in a railway vehicle according to the first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view (cross-section CC in FIG. 2) intersecting in the height direction of the railway car, showing the configuration of a recirculation air duct provided in the railway car in the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view (cross-section DD in FIG. 2) intersecting in the width direction of the railway car near the floor support, showing the configuration of a recirculation air duct provided in the railway car in the first embodiment. [Diagram 5] FIG. 5 is a cross-sectional view (EE cross-section in FIG. 2) intersecting the width direction of the railway car at the center of the recirculation air duct, showing the configuration of the recirculation air duct provided in the railway car in the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view intersecting the longitudinal direction of the floor of the railway car, showing a manufacturing procedure of the recirculation air duct to be provided in the railway car according to the first embodiment. [Figure 7]FIG. 7 is a cross-sectional view (cross-section DD in FIG. 2) intersecting the width direction of the railway car near the floor support, showing a manufacturing procedure of the recirculation air duct to be provided in the railway car according to the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view (cross-section DD in FIG. 2) intersecting the width direction of the railway car near the floor support, showing the configuration of a recirculation air duct provided in the railway car according to the second embodiment. [Figure 9] FIG. 9 is a cross-sectional view (EE cross-section in FIG. 4) intersecting the width direction of the railway car at the center of the recirculation air duct, showing the configuration of the recirculation air duct provided in the railway car according to the second embodiment. [Figure 10] FIG. 10 is a cross-sectional view (cross-section CC in FIG. 2) intersecting in the height direction of the railway car, showing the configuration of a recirculation air duct provided in the railway car according to the third embodiment. [Figure 11] FIG. 11 is a cross-sectional view (cross-section CC in FIG. 2) intersecting in the height direction of the railway car, showing the configuration of a recirculation air duct provided in the railway car according to the fourth embodiment. [Figure 12] FIG. 12 is a cross-sectional view (cross-section DD in FIG. 2) intersecting the width direction of the railway car near the floor support, showing the configuration of a recirculation air duct provided in the railway car according to the fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the directions related to a railway vehicle 1 (hereinafter referred to as vehicle 1) provided for explaining the implementation of the invention will be defined. The longitudinal direction (rail direction) of vehicle 1 is defined as the x direction, the width direction (sleeper direction) of vehicle 1 as the y direction, and the height direction of vehicle 1 as the z direction. Hereinafter, these may be simply referred to as the x direction, y direction, and z direction.

[0019] 1 is a side view of a vehicle 1, which is a roughly rectangular parallelepiped consisting of an underframe 10 forming the floor surface, side structures 20 erected at both ends of the underframe 10 in the y direction, an end structure 30 erected at the ends of the underframe 10 in the x direction, and a roof structure 40 placed on the upper ends of the side structure 20 and the end structure 30. Both ends of the underframe 10 in the x direction are supported by bogies 5 that roll on tracks 3.

[0020] The side structure 20 is provided with a number of windows and side sliding doors (side swinging doors) through which passengers and crew get on and off. Below the underframe 10, there are provided a main converter (not shown) that supplies power to a main motor provided on a bogie 5 that supports the car 1, an air conditioning unit 50, and an auxiliary power supply unit (not shown) that supplies power to the lighting and broadcasting equipment of the car 1, etc.

[0021] A conditioned air duct 22 (hereinafter, CA duct 22) that supplies conditioned air generated by an air conditioner 50 along the x direction of the vehicle 1 is provided on the vehicle interior side of the connection between the side structure 20 and the underframe 10. A plurality of rising ducts 24 extending in the z direction along the wind-over portion between the windows of the side structure 20 are discretely arranged along the x direction, and the CA duct 22 is connected to the lower end of the rising duct 24. After branching off from the CA duct 22, a flow of conditioned air 60 passes through the rising ducts 24 arranged in the z direction along the surface of the vehicle interior side of the side structure 20, and is then blown to each part inside the vehicle 1.

[0022] A recirculation air duct 21 (hereinafter referred to as the RA duct 21) is provided between the upper surface of the underframe 10 and the floor board 13, and the air inside the passenger compartment flows from the RA duct 21 toward the air conditioning device 50 as recirculated air along the x direction of the vehicle 1.

[0023] (First embodiment) An embodiment will be described with reference to Figures 2 to 5. Figure 2 is a cross-sectional view intersecting the longitudinal direction of the vehicle 1, showing the configuration of the RA air duct 21. Figures 3 to 5 are cross-sectional views showing the configuration of the RA air duct 21, showing the CC, DD, and EE cross sections of Figure 2, respectively. Figures 4 and onwards show the structure of the present invention relating to the RA air duct 21.

[0024] The floor structure of the vehicle 1 is composed of an underframe 10 which is the main structure of the vehicle 1, floor supports 12 which are arranged discretely in the width direction on the underframe 10, and floor panels 13 and an inspection panel 14 which are installed via the floor supports 12. An exhaust duct 23, an RA duct 21, and a CA duct 22 are installed in this order between the underframe 10, the floor panels 13, and the inspection panel 14 in the width direction from the center of the vehicle. Also, in order to prevent heat from entering from the underframe 10, a dew condensation prevention material 11 is installed on the underframe 10.

[0025] In vehicle 1, multiple floor supports 12 are erected on underframe 10 with a predetermined width (height), and therefore, by installing floor panels 13 on the floor supports 12, multiple cylindrical spaces are formed surrounded by underframe 10, floor supports 12, and floor panels 13. In the present invention, these cylindrical spaces surrounded by underframe 10, floor supports 12, and floor panels 13 are used as air passages.

[0026] To utilize this cylindrical space surrounded by the underframe 10, floor support 12, and floor plate 13 as an air passage, as shown in Fig. 2 and Fig. 3, the floor support 12 extending in the longitudinal direction of the vehicle is composed of an elastic body 12a, a floor support material 12b, and a gap filler 12c. The elastic body 12a is installed on the lower part of the floor support material 12b, on the surface that contacts the underframe 10. As a result, as shown in Fig. 2, the elastic body 12a is located below the floor plate 13 and the floor support material 12b, and the elastic body 12a is crushed by the weight of the floor plate 13 and the floor support material 12b, filling the gap between the underframe 10 and the floor support 12. The floor support material 12b and the floor plate 13 are fixed by fastening members such as screws or by adhesive, filling the gap between the floor support 12 and the floor plate 13.

[0027] Furthermore, the gap filler 12c is placed either before or after the elastic body 12a and the floor support material 12b in the x direction, or both, to fill the gap between the elastic body 12a and the floor support material 12b that are adjacent in the x direction. However, in consideration of the position adjustment in the x direction when assembling the floor support 12 and the floor board 13, it is preferable that the gap filler 12c is an elastic body. In addition, in consideration of the duct loss of the air passage, it is preferable that the gap filler 12c is flat with the floor support material 12b on the inner surface of the air passage, as shown in FIG. 3.

[0028] Additionally, the floor supports 12 are structured to be longer in the vehicle longitudinal direction (x direction) than the floor panels 13. As a result, as shown in Fig. 4, the gap LS between adjacent floor supports 12 in the vehicle longitudinal direction (x direction) is shorter than the gap LF between adjacent floor panels 13 in the x direction. An inspection panel 14 is installed in the gap between adjacent floor panels 13 in the x direction. This inspection panel 14 is fixed onto the floor supports 12 where no floor panels 13 are installed, and fills the gap between adjacent floor panels 13 in the x direction as well as the gap between the inspection panel 14 and the floor support mold material 12b.

[0029] A floor covering 15 is attached to the upper surfaces of the floor board 13 and the inspection board 14 to improve the design of the passenger compartment and to eliminate small irregularities in the floor board 13. This floor covering 15 is attached over the entire length in the longitudinal direction of the vehicle (x direction), so that the floor covering 15 adheres closely to the top surface of the gap between the floor board 13 and the inspection board 14, thereby filling the gap.

[0030] This makes it possible to fill the gap between the floor board 13 and the inspection board 14 at the central cross section of the RA air duct 21, where air flows like the recirculated air flow 61 as shown in Fig. 5, and ensures the airtightness of the air duct. Furthermore, to ensure even greater airtightness, it is desirable for the inspection board 14 to be the same thickness as the floor board 13 in order to make the top surfaces of the floor board 13 and the inspection board 14 smooth so that the floor covering 15 can be easily attached.

[0031] As a result of the above, the floor support 12 fills the gaps between the underframe 10 and the floor support 12, the gaps between the floor support 12 and the floor panel 13, and the gaps between adjacent floor supports 12 in the longitudinal direction of the vehicle, and the floor covering 15 fills the gaps between adjacent floor panels 13 and inspection panels 14 in the longitudinal direction of the vehicle, ensuring the airtightness of the cylindrical space surrounded by the underframe 10, floor support 12, floor panel 13, and inspection panel 14, and allowing it to be used as an air passage.

[0032] Furthermore, since the inspection plate 14 is installed on the floor supports 12 adjacent in the longitudinal direction of the vehicle, the installation state of the gap filler 12c of the floor supports 12 can be checked before installing the inspection plate 14. By installing the inspection plate 14 after checking that there are no gaps in the gap filler 12c of the floor supports 12, where gaps are likely to occur during production, airtightness can be ensured, and the number of manufacturing steps can be reduced because airtightness check is limited to this range.

[0033] Furthermore, in this structure, the floor support 12 is supported on the underframe 10 by elastic bodies 12a. Unlike conventional railway vehicle floor structures, the underframe 10 and the floor support 12 are not directly fastened to each other. As a result, vibrations and noise from the underframe 10 are absorbed by the elastic bodies 12a and are less likely to be transmitted to the floor panel 13, thereby suppressing vibrations and noise from reaching the passenger compartment.

[0034] A manufacturing procedure of one embodiment will be described with reference to Figures 6 and 7. Figure 6 is a cross-sectional view intersecting the longitudinal direction of the vehicle 1, and Figure 7 is a cross-sectional view intersecting the width direction of the vehicle 1 (cross-section DD in Figure 2).

[0035] The manufacturing procedure for this cylindrical space surrounded by the above-mentioned underframe 10, floor support 12, floor panel 13, and inspection panel 14 will be described below. First, the passenger compartment floor is assembled with floor support 12 attached to floor panel 13. By assembling floor support 12 and floor panel 13 before installation on underframe 10, the gap between floor support 12 and floor panel 13 can be checked, which helps ensure airtightness.

[0036] Next, as shown in Figures 6 and 7(1), the passenger compartment floor with the floor supports 12 attached to the floor panels 13 is installed on the underframe 10. At this time, by using an adhesive between the elastic body 12a and the underframe 10, the gap between the elastic body 12a and the underframe 10 is filled and the floor supports 12 are prevented from moving in the longitudinal and lateral directions of the vehicle, leading to improved airtightness.

[0037] Next, as shown in Fig. 7 (2), a passenger compartment floor with floor supports 12 attached to floor plates 13 is installed adjacent to the passenger compartment floor installed in (1). At this time, the gap filler 12c is pushed in while the passenger compartment floor is installed on the underframe 10. This fills the gap with the already installed floor support 12, ensuring airtightness.

[0038] After that, as shown in (3) of Fig. 7, an inspection panel 14 is installed in the gap between adjacent floor panels 13 in the longitudinal direction of the vehicle. At that time, by checking the construction status of the gap filler 12c installed in (2), it becomes possible to construct the gap filler 12c according to the drawing.

[0039] Finally, as shown in Figures 6 and 7 (4), a floor covering 15 is attached from above the floor boards 13 and the inspection board 14. This allows the floor covering 15 to come into close contact with the floor boards 13 and the inspection board 14, thereby sealing the gaps between the floor boards 13 and the inspection board 14.

[0040] By following the above manufacturing procedure, the underframe 10, floor support 12, floor panel 13, and inspection panel 14 can be easily manufactured while filling the gaps that occur between them. Also, by checking the construction status of gap filler 12c before installing the inspection panel 14, airtightness can be ensured, and the cylindrical space surrounded by the underframe 10, floor support 12, floor panel 13, and inspection panel 14 can be used as an air passage.

[0041] As described above, the present invention is not limited to the first embodiment, and can be embodied in various forms. Other embodiments will be described below with reference to the drawings.

[0042] Second embodiment 8 and 9 are cross-sectional views (cross-sections DD and EE in FIG. 2) intersecting the width direction of a railway vehicle 1 (hereinafter, referred to as vehicle 1) showing the configuration of a recirculation air duct 21 provided in the railway vehicle 1 of the second embodiment. Explanations of the configurations and functions similar to those of the first embodiment will be omitted, and only the configurations unique to the second embodiment will be described.

[0043] The inspection plate 14 is not only fastened to the floor support 12, but is also fastened to the floor plate 13 at the floor plate lower end 13a protruding from the floor plate 13 toward the inspection plate 14. This increases the number of fastening points of the inspection plate 14, improving the fastening strength of the inspection plate 14. Also, as shown in Fig. 9, the contact surface between the floor plate 13 and the inspection plate 14 on the RA air duct 21 increases, making it more difficult for air to leak from the RA air duct 21 through the gap between the floor plate 13 and the inspection plate 14, improving airtightness. Figs. 9 and 10 show a structure in which the floor plate lower end 13a protrudes only in the longitudinal direction of the vehicle, but the same effect can be obtained in other directions.

[0044] The vehicle 1 having the configuration described in the second embodiment can achieve the functions and effects described in the first embodiment.

[0045] Third embodiment Fig. 10 is a diagram showing the configuration of a recirculation air duct 21 provided in a railway vehicle 1 (hereinafter, referred to as vehicle 1) according to the third embodiment, and is a cross-sectional view (cross-section CC in Fig. 3) intersecting in the height direction of the vehicle 1. Explanations of the configurations and functions similar to those of the first and second embodiments described above will be omitted, and only the configuration unique to the third embodiment will be described.

[0046] 3, the inspection plate 14 extends over the entire width of the vehicle in the vehicle width direction (y direction) like the floor plate 13, but it may be structured so that it extends only near the gap between adjacent floor supports 12 in the vehicle longitudinal direction, specifically, only near the gap filler 12c, as shown in FIG. 10. This allows the range where the inspection plate 14 is fastened to be reduced.

[0047] The vehicle 1 having the configuration described in the third embodiment can achieve the functions and effects described in the first embodiment.

[0048] (Fourth embodiment) 11 and 12 are diagrams showing the configuration of a recirculation air duct 21 provided in a railway vehicle 1 (hereinafter referred to as vehicle 1) of the fourth embodiment, and are a cross-sectional view intersecting the height direction of the vehicle 1 (cross-section CC in FIG. 2) and a cross-sectional view intersecting the width direction of the vehicle 1 near the floor support (cross-section DD in FIG. 2). Explanations of the configurations and functions similar to those of the above-mentioned embodiments will be omitted, and a configuration unique to the fourth embodiment will be described.

[0049] As shown in FIG. 11, the floor support 12 may have a structure in which a joint plate 12d is installed on the inner surface of the air passage of the floor support mold material 12b from the inside of the air passage toward the floor support mold material 12b so as to hide the gap between adjacent floor supports 12 in the longitudinal direction of the vehicle, instead of the gap filling 12c. This allows the joint plate 12d to fill the gap between adjacent floor supports 12 in the longitudinal direction of the vehicle, just like the gap filling 12c. In addition, by installing adjacent floor supports 12 in the longitudinal direction of the vehicle along the joint plate 12d, the floor supports 12 are guided to the same position in the transverse direction of the vehicle, making it easier to align the floor supports 12. In addition, the gap filling 12c may also be used at this time.

[0050] The vehicle 1 having the configuration described in the fourth embodiment can achieve the functions and effects described in the above embodiments.

[0051] As described above, in the first to fourth embodiments, the configuration of the RA air duct 21 has been described. However, this is not limited to the RA air duct 21, and the first to fourth embodiments may be applied to the CA air duct 22 and the exhaust air duct 23.

[0052] The present invention is not limited to the above-described embodiment, and can be implemented using any components without departing from the spirit of the present invention.

[0053] The above-mentioned embodiments and modifications are merely examples, and the present invention is not limited to these contents as long as the characteristics of the invention are not impaired. In addition, although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other aspects that are conceivable within the scope of the technical idea of ​​the present invention are also included in the scope of the present invention. [Explanation of symbols]

[0054] 1...Railway vehicle (vehicle) 3...Track 5...Truck 10...Frame (floor section) 11…Condensation prevention material 12…Floor support 12a...Elastic body 12b...Floor support material 12c…Gap filling material 12d…Joint plate 13...Floor plate 13a...Lower end of floor plate 14...Inspection board 15...Floor covering 20…Side structure 21…Recirculating air duct (RA duct) 22... Harmonized air duct (CA duct) 23... Exhaust air duct 24... Rising duct 30... Gable structure 40...Roof structure 50...Air conditioning unit 61...Recirculating air flow 80...Center line x: Longitudinal direction of the railcar (rail direction) y: Width direction of the railcar (sleeper direction) z: Height direction of the railway vehicle

Claims

1. A railway vehicle having a floor structure in which floor panels that form the floor of the passenger compartment and floor supports extending in the longitudinal direction of the vehicle and fastened to the floor panels to support the floor panels are installed on an underframe that is the main structure of the car body, The floor support has an elastic body between a portion where the floor support is in contact with the underframe and an adjacent floor support in the vehicle longitudinal direction, Further, the length of the floor support in the vehicle longitudinal direction is longer than that of the floor plate, By installing an inspection plate so as to fill the gap between the adjacent floor plates in the portion of the floor support that is not fastened to the floor plate, An air conditioning duct is formed in a space surrounded by the underframe, the floor plate, the floor support, and the inspection plate, The elastic body fills the gap between the underframe and the floor support and between adjacent floor supports, A floor covering is adhered to the floor board and the inspection board to seal the gap between the floor board and the inspection board, thereby forming an air passage. A railway vehicle characterized by:

2. 2. The railway vehicle according to claim 1, The floor supports are erected on the underframe at predetermined intervals in the vehicle width direction, A plurality of air passages partitioned by the plurality of floor supports are formed in the vehicle width direction between the underframe and the floor plate. A railway vehicle characterized by:

3. The railway vehicle according to claim 1 or 2, The inspection plate is installed on the lower end of the floor plate in addition to the floor support and is also fastened to the floor plate. A railway vehicle characterized by:

4. The railway vehicle according to any one of claims 1 to 3, The floor supports are provided with joint plates that protrude toward the inside of the air passage toward adjacent floor supports in the longitudinal direction of the vehicle, and the floor supports are provided to hide the gaps between the floor supports. A railway vehicle characterized by:

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