WO2020170346A1 - Véhicule ferroviaire - Google Patents

Véhicule ferroviaire Download PDF

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Publication number
WO2020170346A1
WO2020170346A1 PCT/JP2019/006227 JP2019006227W WO2020170346A1 WO 2020170346 A1 WO2020170346 A1 WO 2020170346A1 JP 2019006227 W JP2019006227 W JP 2019006227W WO 2020170346 A1 WO2020170346 A1 WO 2020170346A1
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WIPO (PCT)
Prior art keywords
vehicle
plate
double
vehicle interior
interior side
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Application number
PCT/JP2019/006227
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English (en)
Japanese (ja)
Inventor
吉澤　尚志
一任 是石
潔 森田
直也 三津橋
Original Assignee
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP2020509558A priority Critical patent/JP6801145B1/ja
Priority to PCT/JP2019/006227 priority patent/WO2020170346A1/fr
Priority to EP19861252.5A priority patent/EP3929058B1/fr
Publication of WO2020170346A1 publication Critical patent/WO2020170346A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/18—Internal lining, e.g. insulating
    • B61D17/185—Internal lining, e.g. insulating for sound insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/041—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures with bodies characterised by use of light metal, e.g. aluminium

Definitions

  • the present invention relates to a rail vehicle.
  • This double-skin structure has a hollow truss structure consisting of a pair of outer and inner plates facing each other and a connecting plate that connects these plates, and is characterized by being lightweight and having high bending rigidity. Furthermore, the double-skin structure has the advantage of being manufacturable because it can be formed using an extruded mold material having the same cross-sectional structure in the vehicle longitudinal direction.
  • Patent Document 1 As a technique for improving the sound insulation using this double-skin structure, for example, Patent Document 1 is disclosed.
  • a hole is formed in either or both of the inner plate and the connecting plate of the double-skin structure, and a sound absorbing material is arranged between the inner plate on the inside of the railway vehicle and the interior panel. Therefore, a method for improving sound insulation is disclosed.
  • Patent Document 1 the position and conditions of the perforated part of the double skin structure are not clearly shown. For example, if the thickness of the sound absorbing material is sufficient, it can be said that the effect of applying the processing man-hours to provide the void portion is small. Further, even if the double-skin structure is provided with holes, further improvement is expected in order to achieve both high strength and sound insulation at a high level.
  • An object of the present invention is to provide a railroad vehicle that is capable of suppressing a decrease in strength and an increase in processing man-hours that may occur when a hole is formed in a vehicle interior side plate of a double-skin structure, and that has an excellent sound insulation effect.
  • one of the typical railroad vehicles of the present invention is A vehicle interior side plate, a vehicle exterior side plate, a connection plate connecting the vehicle interior side plate and the vehicle exterior side plate, Double skin structure consisting of A sound absorbing material provided on the side plate inside the vehicle;
  • Double skin structure consisting of A sound absorbing material provided on the side plate inside the vehicle;
  • the distance t between the vehicle interior side plate and the interior material is not more than 3 times the thickness dimension L of the double skin structure.
  • FIG. 1 is a cross-sectional view of a railway vehicle having an air conditioner mounted on the roof, which crosses in the longitudinal direction.
  • FIG. 2 is a cross-sectional view of a railway vehicle having a current collector mounted on the roof, which crosses in the longitudinal direction.
  • FIG. 3 is a partially enlarged view of the roof structure (see FIG. 1) on which the air conditioner is placed.
  • FIG. 4 is a partially enlarged view of the roof structure (see FIG. 2) on which the current collector is placed.
  • FIG. 5 is a diagram schematically showing a first vibration mode of a roof structure having a double-skin structure.
  • FIG. 6 is a diagram schematically showing a secondary vibration mode of a roof structure having a double-skin structure.
  • FIG. 7 is a schematic diagram showing a model of a double wall structure including an equivalent rigid plate corresponding to a double skin structure, a sound absorbing heat insulating material having an air layer, and an interior material.
  • FIG. 8 is a schematic diagram showing a change in transmission loss when the thickness of the sound absorbing and heat insulating material having the air layer shown in FIG. 7 is changed.
  • FIG. 9 is a perspective view of a roof structure in which a face plate inside the vehicle has holes.
  • FIG. 10 is a cross-sectional view showing a state in which a sound absorbing material and an interior panel are arranged on the vehicle interior side of a roof structure in which a face plate on the vehicle interior side is provided with holes.
  • FIG. 11 is a perspective view of a roof structure in which a hole is provided in a portion having a plate thickness portion of a face plate inside a vehicle.
  • FIG. 12 is a cross-sectional view showing a state in which a sound absorbing material and an interior panel are arranged on the vehicle interior side of a roof structure in which a hole is provided in a portion having a plate thickness portion of a face plate on the vehicle interior side.
  • FIG. 13 is a perspective view of a roof structure in which a hole is provided at a joint portion between a face plate on the inside of the vehicle and a connection plate that connects face plates inside and outside the vehicle.
  • FIG. 14 is an enlarged cross-sectional view of a roof structure having a hole at a joint between a face plate on the inside of the vehicle and a connection plate connecting the face plates on the inside and outside of the vehicle.
  • FIG. 15 is a perspective view of a roof structure provided with holes only in the face plate near the curtain rail structure of the face plate inside the vehicle having the curtain rail structure.
  • FIG. 16 is a cross-sectional view showing a state in which a sound absorbing material and an interior panel are arranged on the vehicle interior side of a roof structure in which only the face plate near the curtain rail structure of the vehicle interior side plate having the curtain rail structure is provided with holes.
  • each direction is defined.
  • the longitudinal (rail) direction of the railcar structures 1a and 1b is the X direction
  • the width (sleepers) direction thereof is the Y direction
  • the height direction thereof is the Z direction, and may be simply referred to as the X direction, the Y direction, and the Z direction.
  • ⁇ Railway vehicles are vehicles that run along the laid tracks, and include railway vehicles, monorail vehicles, trams, and new transportation vehicles.
  • An embodiment of the present invention will be described by taking a railway vehicle as a typical example of a railroad vehicle.
  • INDUSTRIAL APPLICABILITY The present invention is applicable not only to high-speed rail vehicles but also to all rail vehicles.
  • the present invention will be described with reference to a railway vehicle on behalf of a railway vehicle.
  • FIG. 1 is a cross-sectional view of a railway vehicle having an air conditioner mounted on the roof that intersects in the longitudinal direction
  • FIG. 2 is a cross-sectional view of the railway vehicle having a current collector installed on the roof that intersects in the longitudinal direction.
  • the railcar structure 1a (1b) generally includes a floor structure (underframe) 4 forming a floor surface, side structures 3 standing on both ends of the floor structure 4 in the Y direction, and upper end parts of the side structures 3. It is a hexahedron composed of a roof structure 2a (2b) to be placed and a gable structure (not shown) provided at both ends of the floor structure 4 in the X direction.
  • the floor structure 4, the side structure 3, and the roof structures 2a and 2b are referred to as outer side plates (also referred to as outer plates) 2a1 and 2b1 and inner side plates (also referred to as inner plates) 2a2 and 2b2 with reference to FIGS. ,
  • outer side plates also referred to as outer plates
  • inner side plates also referred to as inner plates
  • FIGS. A double-skin structure composed of connecting plates 2a3, 2b3 connecting these face plates.
  • these double-skin structures include a vehicle exterior cavity portion 20 that is a space surrounded by a vehicle exterior surface plate 2b1 and two adjacent connection plates 2b3, and two vehicle interior side surface plates 2b2 adjacent to each other. It has a vehicle interior cavity 17 that is a space surrounded (partitioned) by the connection plate 2b3.
  • the structure consisting of the hollow extruded profile having two face plates facing each other and a connecting plate connecting these face plates is called a double skin structure.
  • the double-skin structure is lightweight, has high strength, and is easily manufactured.
  • the double-skin structure is made of an aluminum alloy and a hollow extruded shape extruded in the X direction. After arranging these profiles in the Y direction, the butted parts in the Y direction are joined along the X direction to form the floor structure 4, the side structure 3, and the roof structure 2a (2b). The manufacturing cost can be suppressed even though it is provided.
  • the air conditioner 5 is placed on the central portion side in the X direction of the railway vehicle body structure 1a, and as shown in FIG. 2, on the low roof portion on the end portion side of the railway vehicle body body 1b in the X direction.
  • a current collector (pantograph) 6 is placed.
  • An interior panel (interior material) 7, an air conditioning duct 8, a floor board 10, a seat 11, a luggage rack 12, and the like are provided on the inside of the railcar structure 1a (1b).
  • FIG. 3 is a partially enlarged view of the roof structure (see FIG. 1) on which the air conditioner is mounted
  • FIG. 4 is a partially enlarged view of the roof structure (see FIG. 2) on which the current collector is mounted. ..
  • the roof structure 2a (see FIG. 3) is a double-skin structure including an outer plate 2a1, an inner plate 2a2, and a connecting plate 2a3 that connects these plates.
  • the inner plate 2a2 of the double-skin structure has a curtain rail structure 13 that is integrally extruded together with the inner plate 2a2 and the like, and the interior panel 7, the air conditioning duct 8 and the like have this curtain rail structure 13.
  • the curtain rail structure is a structure whose longitudinal cross section is substantially C-shaped. An example including the curtain rail structure 13 will be described later with reference to FIGS.
  • a sound absorbing material 14 having a heat insulating property is provided between the inner plate 2a2 of the double-skin structure and the top plate 8a of the interior panel 7 and the air conditioning duct 8.
  • the sound absorbing material 14 is, for example, a foaming foam material or a fibrous sound absorbing material, and is attached to the inner plate 2a2 of the double skin structure with an adhesive or a double-sided tape.
  • the side surface 8b of the air conditioning duct 8 is provided with an opening 8c for blowing out conditioned air into the vehicle.
  • FIG. 4 which is an enlarged view of the ceiling portion in the cross section of the low roof portion (see FIG. 2 ), the sound absorbing material 14 is provided on the inner plate 2b2 side of the roof structure 2b, and the sound absorbing material 14 is covered by the interior panel 7. Be seen.
  • aerodynamic noise is generated due to the air on the roof of a railway vehicle traveling at high speed being disturbed, and this aerodynamic noise is accompanied by an increase in vehicle speed. It becomes a large noise source especially when the train runs at high speed. Aerodynamic noise generated on the roof is transmitted to the inside of the vehicle through the roof structures 2a and 2b, the sound absorbing material 14, the interior panel 7, the top plate 8a of the air-conditioning duct, etc., and becomes a factor of increasing the vehicle interior noise.
  • aerodynamic noise has relatively large low frequency components, and the sound insulation characteristics of the vehicle body and the sound absorption characteristics of the vehicle interior space are generally low in the low frequency range. For this reason, it is general to take noise countermeasures on the assumption that the low frequency range of 1 kHz or less is dominant in the vehicle interior noise. That is, it is particularly important to improve the sound insulation performance in the low frequency range.
  • the side surface 8b of the air conditioning duct 8 is provided with an opening 8c for blowing the conditioned air into the vehicle.
  • the noise transmitted through the top plate 8a is transmitted to the inside of the vehicle through the opening 8c, it is desirable to reduce the noise transmitted through the top plate 8a first.
  • the gap between the inner plates 2a2, 2b2 of the double skin structure and the interior panel 7 or the top plate 8a should be widened or Increasing weight is known to be effective.
  • FIG. 5 is a diagram schematically showing a first-order vibration mode of a roof structure having a double-skin structure
  • FIG. 6 schematically showing a second-order vibration mode of a roof structure having a double-skin structure. It is a figure.
  • FIG. 7 is a schematic diagram showing a model of a double wall structure including an equivalent rigid plate corresponding to a double skin structure, a sound absorbing heat insulating material having an air layer, and an interior material
  • FIG. 8 is an air layer.
  • FIG. 6 is a schematic diagram showing a change in transmission loss when the thickness of the sound absorbing and heat insulating material having is changed.
  • the double-skin structure is generally lightweight and has high rigidity, the natural frequency of the bending mode of the plate exists at a relatively high frequency, and at a low frequency of 1 kHz or less, the primary vibration mode with a long wavelength (see FIG. 5) or 2 The following vibration modes (see FIG. 6) dominate.
  • the double-skin structure can be regarded as one plate, and the laminated structure of the double-skin structure, the sound absorbing material 14, and the interior panel 7 can be considered as a double-wall structure (see FIG. 7).
  • the double-skin structure is replaced by the equivalent rigid plate 2a'.
  • the transmission loss which is an index of sound insulation performance
  • the transmission loss is improved as compared with the mass law.
  • the low frequency range due to the resonance phenomenon in which the equivalent rigid plate 2a′ and the interior panel 7 are mass, and the air layer (equivalent to the air gap 15) that is the medium of the sound absorbing material 14 is a spring, the reverse frequency near the low frequency resonance frequency frL is reversed. It is known that the transmission loss is lower than the mass law.
  • the low frequency resonance frequency frL shifts to the low frequency side as compared with the case where the thickness of the air layer is small (dotted line in FIG. 8). Therefore, the transmission loss is improved on the higher frequency side than the low frequency resonance frequency frL.
  • the high frequency resonance frequency frH when the thickness of the air layer is increased, the high frequency resonance frequency frH also shifts to the low frequency side.
  • the high frequency resonance frequency frH exists in a high frequency range of 1 kHz or higher, and in such a high frequency range, noise is sufficiently attenuated by the sound absorbing material 14 and the sound absorbing performance of the seat 11 in the vehicle interior space. Therefore, the shift of the high frequency resonance frequency frH does not usually cause a problem.
  • the space 15 between the roof structure 2a (2b) side structure 3 (floor structure 4), which is a double-skin structure, and the interior panel 7 or the top plate 8a is provided. It is effective to widen and increase the thickness of the sound absorbing material 14 inserted into the void 15.
  • the outer dimensions of the car body are limited by the boundary line called the car limit, and it is difficult to make the car body larger than that.
  • the car limit in order to widen the gap 15, it is also an idea to offset the interior panel 7 and the top plate 8a to the inside of the vehicle.
  • the present inventors conducted an element test and analysis simulating the laminated structure of the double-skin structure, the sound absorbing material 14, and the interior panel 7, and improved the transmission loss by making a hole in the inner plate 2b2 of the double-skin structure. We examined the conditions under which is significantly exhibited.
  • the gap between the inner plate 2b2 of the double-skin structure and the interior panel 7, that is, the gap 15 with respect to the holding thickness (also simply referred to as thickness) L of the double-skin structure It has been found that providing a hole in a portion where the thickness dimension t is approximately 3 times or less (t ⁇ 3L) has a significant effect. It is more preferable that t ⁇ 2L.
  • the railway vehicle of the present embodiment is provided with the air conditioner 5 or the current collector 6 on the roof, so that the size restriction in the ceiling height direction is large, and thus the sound absorbing material 14
  • the reality is that the thickness cannot be secured sufficiently. In such a situation where the sound absorbing material 14 has to be made thin, it is particularly effective to provide the holes 16.
  • holes are made in the inner plates 2a2, 2b2 of the roof structures 2a, 2b to increase the transmission loss and improve the sound insulation, and the air conditioner 5 and the current collector 6 on the roof. The transmission of aerodynamic noise generated in the vehicle is reduced.
  • FIG. 9 is a perspective view of a roof structure in which a face plate on the inside of the vehicle is provided with holes
  • FIG. 10 shows a state in which a sound absorbing material and an interior panel are arranged on the inside of the roof structure in which a face plate on the inside of the vehicle is provided. It is sectional drawing shown.
  • the double-skin structure of a typical railroad car is often designed to have a thickness L of approximately 30 mm to 70 mm.
  • the distance between the roof structure 2b of the vehicle in which the air conditioner 5 and the current collector 6 are mounted on the roof and the interior panel 7, that is, the thickness t of the sound absorbing material depends on the type and site of the vehicle. Although different, it is often possible to secure a thickness of approximately 70 mm or less.
  • a plurality of holes 16 penetrating the inner plate 2b2 along the X direction are formed at a position between the connecting portions between the face plate (inner plate) 2b2 and the connecting plate 2b3 on the inner side of the vehicle.
  • the vehicle interior cavity 17 surrounded by the inner plate 2b2 and the connecting plate 2b3 of the double-skin structure and the space 15 communicate with each other through the hole 16, and the compression wave of the sound waves transmitted through the double-skin structure DS is transmitted to the vehicle. It also becomes possible to enter the inner cavity portion 17.
  • the thickness t of the void 15 becomes thicker by the thickness L of the double-skin structure DS, that is, the thickness is increased to (t+L).
  • the thickness t of the void 15 is 1.3 times or more (preferably, t). Since it is possible to obtain the effect of expanding to 1.5 times or more), a significant sound insulation improving effect can be obtained. In other words, even if the sound absorbing material becomes thin at the part of the double-skin structure where t ⁇ 3L (preferably t ⁇ 2L), the provision of the holes 16 provides a sufficient sound insulation improving effect.
  • the mechanism of improving the sound insulation in the present embodiment exhibits the same effect as when the thickness of the void 15 is increased by communicating the void 15 with the vehicle interior cavity 17 inside the double-skin structure DS. Is. Therefore, it is preferable to open a large number of holes having the smallest diameter as much as possible, rather than opening a large number of holes having a small diameter, from the viewpoint of excellent sound insulation and suppressing an increase in the number of manufacturing steps due to the hole processing.
  • the holes 16 should be formed with respect to the distance (pitch P in the Y direction) between the inner plate 2b2 and the connecting plate 2b3 of the double-skin structure DS.
  • the inner diameter d is preferably in a range such that approximately (P/5) ⁇ d ⁇ (4P/5).
  • the holes 16 are arranged in a row in the vehicle interior cavity portion 17 at equal pitches (in the X direction), and are arranged in rows at equal pitches adjacent to the holes 16.
  • the positions of the provided holes 16 are staggered by shifting in the X direction by a half pitch (see FIG. 9).
  • the hole thickness 16 of the double-skin structure can be utilized as a part of the thickness of the void 15 by opening the hole 16 in the double-skin structure where the thickness of the void 15 cannot be ensured.
  • a railway vehicle that is capable of suppressing a decrease in strength and an increase in processing man-hours caused by forming a hole in the inner plate of the double-skin structure and having an excellent sound insulation effect.
  • the holes 16 of the face plate (inner plate) 2b2 on the inner side of the vehicle are suppressed from being blocked by a double-sided tape or the like when fixing the sound absorbing material 14 to the inner plate, and a gap is formed between the inner cavity portion 17 and the vehicle.
  • the structure is such that communication with 15 is secured and an excellent sound insulation effect is obtained.
  • FIG. 11 is a perspective view of a roof structure in which a hole is provided in a portion of the face plate on the inside of the vehicle
  • FIG. 12 is shown in FIG. It is sectional drawing which shows the state which has arrange
  • the double-skin structure such as the roof structure 2a (2b) and the side structure 3 of the second embodiment faces the inner cavity portion 17 at each part of the inner plate 2b2 defined by the inner plate 2b2 and the pair of connecting plates 2b3.
  • the protrusion 18 is formed so as to project toward the inside of the vehicle to increase its thickness and is continuously formed along the X direction.
  • the convex portion 18 is provided in the center in the Y direction between the connecting portions of the inner plate 2b2 and the connecting plate 2b3 and continuously extends along the X direction, it is extruded integrally with the double skin structure. Can be formed by.
  • the inner plate 2b2 has a plurality of holes 16 provided on the convex portion 18 in a discrete manner at an equal pitch along the extrusion direction (X direction) of the convex portion 18. Since the inner diameter d of the hole 16 is larger than the width W of the convex portion 18 along the Y direction, part of the hole 16 protrudes from the convex portion 18. It is preferable that the central axis of each hole 16 intersects the central line of the convex portion 18.
  • the sound absorbing material 14 is coated with an adhesive (or attached with double-sided tape or the like) on one surface thereof and adhered to the inner plate 2b2 of the double skin structure, and then the interior panel 7 is attached to the other surface.
  • the hole 16 is blocked by an adhesive having a weak air permeability or a double-sided tape or the like, and the vehicle inner cavity portion 17 is used. There is a possibility that the effect of doing so will not be fully exerted and the sound insulation cannot be improved.
  • the inner plate 2b2 is provided with the convex portion 18, a gap that extends from the vehicle inner surface of the inner plate 2b2 to the end of the vertical surface 18a in the height direction of the convex portion 18 is formed. 19 is formed. Since no adhesive or the like is applied to this gap 19 and a part of the hole 16 protruding from the convex portion 18 is not blocked, the compressional wave of the sound wave propagating in the gap 15 follows the sound wave intrusion path 21. Thus, it is possible to enter the inside cavity 17 through the gap 19 and part of the hole 16. As a result, the effect of improving sound insulation can be obtained.
  • the stress is concentrated most particularly at the end portion in the vehicle longitudinal direction (the vertical direction of the paper surface of the cross-sectional view), even in the peripheral portion of the hole 16 of the inner plate 2b2 of the double-skin structure.
  • the convex portion 18 having a large plate thickness is provided in the vicinity of the hole 16, even when the hole 16 is provided, the fatigue durability of the double skin structure can be improved.
  • the convex portion 18 there is an effect that the hole 16 can be easily positioned during construction.
  • the double-skin structure without the convex portion 18 it is difficult to know the positions of the connecting plate 2b3 and the vehicle interior cavity 17 only by looking from the inner plate 2b2 side. Therefore, the holes 16 should be processed without interfering with them. Is difficult.
  • the convex portion 18 it becomes easier to position the hole 16 by using this as a marker, and the workability of drilling is improved.
  • the convex portion 18 on the double-skin structure it is possible to avoid a decrease in sound insulation due to the hole 16 being blocked when the sound absorbing material 14 is bonded to the inner plate 2b2, and in addition, the double skin It is possible to provide a railway vehicle that can improve fatigue durability of a structure and workability.
  • FIG. 13 is a perspective view of a roof structure in which a hole is provided at a joint between a face plate on the inside of the vehicle and a connection plate connecting the face plates on the inside and outside of the vehicle
  • FIG. 14 is a face plate on the inside and outside of the vehicle.
  • FIG. 4 is an enlarged cross-sectional view of a roof structure including a hole at a joint portion with a connection plate that connects the two.
  • the configuration of the third embodiment is such that the hole 16 is provided at the connecting portion between the inner plate 2b2 of the double skin structure and the connecting plate 2b3 connected to the inner plate 2b2.
  • the hole 16 has an intersection 23 between the virtual center extension line (face) of one of the adjacent connection plates 2b3 and the virtual center extension line (face) of the other connection plate 2b3 shown by the dotted line in FIG. 14, and the inner plate 2b2. Is preferably provided in the vicinity of and so that the central axis of the hole 16 passes through the intersection point 23.
  • the single hole 16 sandwiches the space 15 (sound absorbing material 14) between the two vehicle interior cavity portions 17 and these two vehicle interior cavity portions 17. It will communicate with one vehicle exterior cavity 20.
  • the three cavities (17, 20) can be used as a common space, so even if the number of holes 16 is reduced, the same as in the above-described embodiment. A sound insulation effect can be obtained. As a result, the man-hours for processing the holes 16 can be suppressed.
  • the apex where a pair of adjacent connecting plates 2b3 and inner plate 2b2 intersect is a part with relatively high strength. Therefore, even when the holes 16 are provided, it is possible to suppress the strength reduction of the double skin structure.
  • the void 15 and the three cavities (17, 20) can be communicated with each other through the single hole 16, so that the holes 16 are formed, for example, at every other connection portion to reduce the number thereof. Can be made. Therefore, it is possible to provide a railway vehicle that can suppress the strength reduction and the processing man-hours caused by forming a hole in the inner plate of the double-skin structure and have an excellent sound insulation effect.
  • FIG. 15 is a perspective view of a roof structure having a curtain rail structure, in which a hole is provided only in a face plate near the curtain rail structure
  • FIG. 16 is a curtain of a car inside face plate having a curtain rail structure. It is sectional drawing which shows the state which has arrange
  • the double-skin structure integrally includes a curtain rail structure 13 for fixing the interior panel 7 and a bundle of wiring cables as a part of the extruded hollow mold member.
  • the curtain rail structure 13 is provided so as to extend in the X direction near or opposite to the connection portion between the pair of connection plates 2b3 and the inner plate 2b2. In addition to the originally high strength of the connecting portion, the provision of the curtain rail structure 13 further increases the strength in the vicinity thereof.
  • Example 4 the inner plate 2b2 near the curtain rail structure 13 is provided with holes 16 discretely at equal pitches along the X direction.
  • the curtain rail structure 13 can have the function of substituting the convex portion 18 as described in the second embodiment.
  • a drill or the like can be attached to a jig (not shown) that has a predetermined span in the Y direction from the curtain rail structure 13 and slides along the curtain rail structure 13 to perform a punching operation on the inner plate 2b2. .. Thereby, the plurality of holes 16 can be accurately formed along the curtain rail structure 13 by an easy work.
  • the curtain rail structure 13 in the double skin structure, even when the hole 16 is formed in the inner plate 2b2, the strength of the double skin structure can be secured, and the number of processing steps can be reduced, and it is excellent.
  • a railway vehicle having a sound insulation effect can be provided.
  • the configuration and effects of the present invention have been described by taking a railway vehicle having an air conditioner and a current collector on the roof as an example.
  • the present invention can be applied according to the same principle as described in Examples 1 to 4.
  • the cross-sectional shape of the double skin structure is a triangular truss structure including the outer plate 2b1 or the inner plate 2b2 and the pair of connecting plates 2b3 has been described as an example. ..
  • the cross-sectional shape of the double-skin structure is, for example, a quadrangular structure, as long as it is a double-skin structure composed of an outer plate, an inner plate, vertical ribs, and a cavity surrounded by them, the embodiment of the present invention The present invention can be applied by the same principle as described in 1 to 4.
  • the present invention is not limited to the above-described embodiment, and various modifications are included.
  • the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. ..

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

L'invention concerne un véhicule ferroviaire qui présente une structure à double paroi comprenant une plaque de face externe de véhicule, une plaque de face interne de véhicule, une plaque de liaison et une cavité fermée par cette dernière. La plaque de face interne de véhicule de cette structure à double paroi est pourvue d'un matériau d'absorption sonore, et est en outre recouverte d'un panneau intérieur. Un trou est formé dans la structure à double paroi sur le côté de face de plaque interne de véhicule dans une zone où t ≤ 3L, t étant l'épaisseur d'un espace entre la plaque de face interne de véhicule de la structure à double paroi et le panneau intérieur, et L étant l'épaisseur de construction de la structure à double paroi. Cela permet d'améliorer l'isolation sonore dans la zone la plus efficace pour réduire le bruit intérieur du véhicule, sans réduire l'espace passager.
PCT/JP2019/006227 2019-02-20 2019-02-20 Véhicule ferroviaire WO2020170346A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2020509558A JP6801145B1 (ja) 2019-02-20 2019-02-20 軌条車両
PCT/JP2019/006227 WO2020170346A1 (fr) 2019-02-20 2019-02-20 Véhicule ferroviaire
EP19861252.5A EP3929058B1 (fr) 2019-02-20 2019-02-20 Véhicule ferroviaire

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PCT/JP2019/006227 WO2020170346A1 (fr) 2019-02-20 2019-02-20 Véhicule ferroviaire

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WO2020170346A1 true WO2020170346A1 (fr) 2020-08-27

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JP2017105228A (ja) 2015-12-07 2017-06-15 株式会社日立製作所 鉄道車両および鉄道車両加工方法
JP2017114207A (ja) * 2015-12-22 2017-06-29 川崎重工業株式会社 鉄道車両の車体
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JP2010269757A (ja) * 2009-05-25 2010-12-02 Hitachi Ltd 鉄道車両構体への内装品の取付け構造、及び内装品を車両構体に取り付けた鉄道車両
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EP3929058B1 (fr) 2024-04-10
EP3929058A1 (fr) 2021-12-29
JPWO2020170346A1 (ja) 2021-03-11
JP6801145B1 (ja) 2020-12-16

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