JP2004090820A - Outer bellows for high-speed railroad rolling stock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outer bellows for a high-speed railroad rolling stock with durability which is the outer bellows for a coupling part of the high-speed traveling railroad rolling stock, mounted to the respective vehicle ends, and maintains opposing outer bellows each other to regular contacting state with a simple mechanism. <P>SOLUTION: The outer bellows for the rolling stock is opposingly arranged from the respective face end parts of couplings of the rolling stock so that a U-shaped cross sectional hood member fills in the outside of the gap of the coupling. The inside surface of the U-shaped cross sectional hood member is movable, and the outside surface is constituted to the fixed position. The movable inside surface is pushed with a pneumatic spring member at pushing-out time, and drawn in with a separately placed spring member at drawing-in time. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an outer hood for a vehicle connecting portion attached to a connecting portion of a railway vehicle, and more particularly, to an outer hood for a high-speed rail vehicle for preventing noise when the high-speed rail vehicle travels.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when a railway vehicle travels, high-speed traveling wind flows along an outer surface such as a side surface or a roof surface. Then, a strong vortex is generated in the uneven portion of the vehicle surface due to the high-speed running wind. This eddy current increases wind noise and significantly increases the air resistance of the railway vehicle. In particular, when there is a gap in the vehicle connecting portion, the wind noise during high-speed running has been a serious problem.
[0003]
Regarding the problem of wind noise, the space of the vehicle connection part is completely covered with a bellows-shaped outer hood, and the bellows-shaped outer hood is expanded and contracted by air pressure. An outer hood that follows the resulting relative displacement between vehicles has already been published. (For example, see Patent Documents 1 and 2)
[0004]
However, the outer hood of this type is configured to be fixed and attached to both vehicle ends (wife surface) of the vehicle connecting portion, respectively, and is arranged and fixed after connecting the vehicles, thereby sealing the space of the vehicle connecting portion. It stops. Therefore, when disconnecting the vehicle, it is necessary to remove the outer hood one by one, and this is not a configuration in which the connection and disconnection of the vehicle can be easily performed. Furthermore, the deformation is repeated due to the shaking of the vehicle and the expansion and contraction of the outer hood, which causes cracks in the outer hood.
[0005]
In order to reduce wind noise, it is effective to seal the space of the vehicle connecting portion and eliminate irregularities when the vehicle is running. For this reason, in a type in which separate outer hoods are attached to the respective wife surfaces of the vehicle connecting portion, it is important to make the distance between the opposing outer hoods almost zero, and to have a uniform flat outer surface.
[0006]
In addition, since the curve curvature of the main track of a high-speed railway vehicle such as a Shinkansen is relatively small (the radius of the curve is large), the outer hoods facing each other on the vehicle wedge surface are crimped by a predetermined amount so that the vehicle travels on a curve. It is possible to always keep the outer hoods that are going to spread out in contact with each other.
[0007]
[Patent Document 1]
JP-A-11-198805 (pages 2-3, FIG. 2)
[Patent Document 2]
JP-A-11-291903 (page 2-3, FIG. 3)
[0008]
[Problems to be solved by the invention]
Recent high-speed rail vehicles are running at ever higher speeds, and the problem of wind noise is also increasing. In addition, when connecting or disconnecting vehicles, there is a demand for an outer hood that does not need to be detached and attached and has a long life.
[0009]
An object of the present invention is an outer top for a connecting portion of a railway car running at high speed, which is attached to each of the wives and maintains the outer tops facing each other with a simple mechanism at all times, and is durable. It is an object of the present invention to provide an outer hood for a high-speed railway vehicle having a property.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that a hood member having a U-shaped cross section including an inner side surface portion, an outer side surface portion, and an arc-shaped central portion connecting the two is connected to each of the wedges of a vehicle to be connected. A vehicle outer hood disposed opposite to each other so that the respective arc-shaped central portions thereof are in contact with each other from the surface, the vehicle having a moving means for moving the inner surface portion in the vehicle front-rear direction, and fixing the outer surface portion. Then, by moving the inner side surface portion, it is possible to maintain the contact state between the arc-shaped central portions of the opposed hood members.
[0011]
According to the invention according to claim 1 having the above-described configuration, by moving the inner side surface of the hood member, it is possible to always maintain the opposed arcuate central portions in contact with each other. The space of the vehicle connecting portion can be sealed regardless of when traveling on a curve, and wind noise during traveling can be reduced.
[0012]
The invention according to claim 2 is characterized in that the top member is a plate-shaped elastic body, and the arc-shaped central portion is formed to be thin.
[0013]
According to the invention according to claim 2 having the above configuration, since the arc-shaped central portion is formed to be thin, it can easily hold a predetermined U-shape and strongly contact even in a contact state. , And durability can be obtained.
[0014]
In the invention according to claim 3, the moving means includes an air spring member that expands and contracts by entering and exiting compressed air, a moving holder that transmits expansion and contraction movement of the air spring member to the inner side surface portion, and an air spring member that contracts the air spring member. And a separate spring member having an urging force in the turning direction.
[0015]
According to the invention according to claim 3 having the above configuration, when a high-speed railway vehicle such as a Shinkansen travels on a traveling main line having a small curve curvature (a large curve radius), the outer roof facing the vehicle wive surface is opposed. Even when they are in a crimped state, when traveling at a low speed on a track with a large curve curvature (small curve radius) such as in a stop station yard, the compressed air is extracted from the air spring member, and a separate spring member is used. The arc-shaped central portion is contracted inward by the urging force, so that the moving operation of the hood member can be performed quickly. For this reason, the contact state between the hood members can be changed quickly in response to the curve state of the vehicle running track, and the outer hoods in a crimped state can be immediately opened at a high speed running, and the outer hoods can be immediately opened at a low speed running. The crimped state of the outer hood between the inner surfaces having a large curve curvature, which makes the outer hood tight, is relaxed or released, so that an outer hood with increased durability and a long life can be obtained.
[0016]
The invention according to claim 4 is characterized in that the moving means is unitized by being mounted on a single substrate, and can be installed at an arbitrary position on the vehicle wives surface.
[0017]
According to the invention according to claim 4 having the above configuration, it is possible to install the moving means at an optimum position on the vehicle end surface according to the size and type of the vehicle.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of an outer hood for a high-speed railway vehicle according to the present invention will be described with reference to FIGS. 1 to 5.
[0019]
FIG. 1 is a perspective view showing that an outer top for a high-speed railway vehicle according to the present invention is disposed at a vehicle connecting portion (wife surface). FIG. 2 is a front view of a vehicle end on which the outer hood for a high-speed railway vehicle according to the present invention is mounted. FIG. 3 is a cross-sectional view of the hood member according to the present invention. FIG. 4 is a sectional view of the moving means of the hood member according to the present invention, and FIG. 5 is a perspective view thereof.
[0020]
As shown in FIG. 1, the hood member 1 is disposed at a vehicle connecting portion of the vehicle T <b> 1 and the vehicle T <b> 2, and is configured so that the vehicle connecting portion and each vehicle outer surface are flush with each other to eliminate irregularities. The hood member 1 is divided into a side outer hood 1A and a roof outer hood 1B. If necessary, a lower side outer top or a bottom outer top (not shown) may be employed. A side outer hood 1A and a roof outer hood 1B are respectively provided on the respective wives of the vehicles T1 and T2, and when the vehicles are connected, the arc-shaped tips of the opposing hood members 1 are opposed to each other. The vehicle connecting portion is configured to have an outer surface without unevenness by abutting.
[0021]
The opposing top members 1 may have the same shape, and the corners of the opposing top members 1 may be in contact with each other. When it is configured not to contact, the durability can be improved without the corners rubbing tightly.
[0022]
As shown in FIG. 3, the top member 1 is a vertically long synthetic rubber product having a U-shaped cross section, and a root portion 1a serves as an attachment portion. The root portion 1a is formed to be thick, has a high rigidity, and is configured to be firmly held by the mounting bracket 2. The arc-shaped central portion 1b having a U-shaped cross section is formed to be thin, and is configured to be easily elastically deformed.
[0023]
Since the arc-shaped central portion 1b is formed to be thin, the hood member 1 can be easily bent into a U shape, and when one of the mounting brackets 2 is moved, the shape can be changed following the movement. Further, even when the arc-shaped central portions 1b, which are thin rubber products, are brought into contact with each other, they are easily elastically deformed. Therefore, even when the opposed hood members 1 come into contact with each other, wear is reduced and durability is deteriorated. Not even.
[0024]
When the hood member 1 is bent into a U-shape depending on the position of the thin portion of the arc-shaped central portion 1b, the outer side surface portion 1d can be made substantially vertical. In other words, the optimum position of the thin portion of the arc-shaped central portion 1b can be determined by the overhang length L and the width W according to the interval between the high-speed rail vehicles. In a vehicle equipped with the hood member 1 having such a shape, the outer surface of the vehicle and the outer surface of the hood member 1 covering the connecting portion are substantially coplanar, so that irregularities on the surface can be minimized.
[0025]
In order to reduce wind noise, it is important that the vehicle connecting portion of the railway vehicle running at high speed has the same surface shape as that of the vehicle, without any step with respect to the outer surface of the vehicle. For this reason, it is necessary to keep the opposing top members 1 in contact at all times during traveling. While traveling on the straight track, the vehicle ends of the vehicles T1 and T2 forming the connecting portion are in a parallel state, and the left and right side outer hoods 1A have the same projecting shape.
[0026]
The curve radius of the main track of high-speed railway vehicles such as Shinkansen is relatively large (small curvature). It is possible to always keep the outer hoods on the outside to be in contact with each other. At this time, the top members on the inside of the curve strongly contact each other, but the arc-shaped central portion 1b is formed to be thin and easily elastically deformed, so that the top member 1 in the crimped state is not damaged, The life is not shortened.
[0027]
Also, when traveling at a low speed on a track with a small curve radius (a large curvature) such as in a stop station yard, the crimping state inside the curve becomes severe, so that the crimping state between outer hoods is released. Therefore, when the curve curvature is large or when traveling at a low speed, the outer hood is configured to change its expansion / contraction state.
[0028]
The moving means 10 for operating the expansion and contraction of the hood member 1 will be described with reference to FIGS. The moving means 10 controls the amount of protrusion of the arc-shaped central portion 1b of the hood member 1 by the support member 13A holding the inner side surface portion 1c of the hood member 1 moving in conjunction with the expansion and contraction of the air spring member 11. It is. By fixing the lower support 12a of the air spring member 11 to the holder 14 and fixing the upper support 12b to the movable holder 13, the movable holder 13 is moved in conjunction with the expansion and contraction of the air spring member 11. It is a structure to make it. The movement of the moving holder 13 is configured to move uniformly in conjunction with expansion and contraction of the air spring member 11 using three guide shafts of the guide shafts 16a, 16b and 16c as guides.
[0029]
The moving end (upward end) of the movable holder 13 with respect to the guide shafts 16a, 16b and 16c is mechanically restricted, and the position 13x indicated by a solid line is the upward end. As an example of a mechanism for this purpose, a large-diameter portion may be provided at the head of the guide shafts 16a, 16b, 16c to serve as the moving end of the moving holder 13. Also, a configuration may be adopted in which a stop member (stopper) is provided separately from the guide shaft.
[0030]
The moving holder 13 has a support portion 13A bent into an L shape from a flat air spring member holding portion, and the support portion 13A, a guide shaft 16 and a boss 15 slidably disposed. The inner surface 1c of the top member 1 is held. Therefore, the expansion and contraction operation of the air spring member 11 moves the inner surface 1c of the hood member 1 via the moving holder 13 and the support 13A.
[0031]
The root 1a of the outer surface 1d of the hood member 1 is fixed to the mounting plate 2A mounted on the end face plate 2B provided on the frame 2C at the vehicle end by a pin 3. Further, the moving means 10 is provided on the mounting plate 2A via the substrate 20. The base 1a of the inner surface 1c of the hood member 1 is sandwiched between a boss 15 slidable on a guide shaft 16 and a support portion 13A. The inner surface 1c follows the expansion and contraction of the air spring member 11. It is configured to move.
[0032]
Therefore, the movable holder 13 is configured to be movable by a stroke 13z from a position 13x shown by a solid line to a position 13y shown by a broken line by the expansion and contraction operation of the air spring member 11, so that the hood member 1 is linked to the movement. Is configured such that it can expand and contract with a stroke 1z from a position 1x indicated by a solid line to a position 1y indicated by a broken line. That is, the opposing top members 1 are configured such that the arc-shaped central portion 1b, which is the tip end portion, can expand and contract by the stroke 1z.
[0033]
When a high-speed rail vehicle travels on a track, the opposing top members 1 are in contact with each other, and the vehicle connecting portion is in a sealed state. For this reason, when the arc-shaped central portion 1b is at the position 1x shown by the solid line, that is, the state where the hood member 1 is extended most is the outer hood state outside when the vehicle travels on a curved track. Further, when the vehicle enters the station premises, the vehicle is in a low speed state and the wind noise is not generated. Therefore, the opposed hood members 1 may be separated from each other. For this purpose, the arc-shaped central portion 1b is configured to be contractable to a position 1y indicated by a broken line, and when the vehicle travels on a curved track, the facing hood members on the inside of the curve are separated from each other or the contact force is increased. Is reduced, thereby reducing the contact load of the top member 1.
[0034]
The supply of air to the air spring member 11 is configured to supply compressed air from an air hose 19 through an air joint 18 disposed on the holder 14. The air supply is controlled via an electromagnetic valve (not shown), but will not be described in detail here. It goes without saying that the compressed air used for the vehicle door opening / closing mechanism or the like can be used as it is.
[0035]
When the tip of the hood member 1 is extended and extended outward, compressed air may be supplied to the air spring member 11. Conversely, when the tip is contracted, compressed air is supplied from the air spring member 11. Not only to be pulled out, but also to be contracted and contracted by the separately provided spring member 17. With this configuration, the expansion and contraction of the hood member 1 can be performed reliably and quickly. The spring members 17 were distributed and arranged at six locations around the air spring member 11. This is for equalizing the compression force of the spring. However, the number of the spring members 17 is not limited to six, and may be any number as long as the air spring members 11 are evenly contracted.
[0036]
The moving means 10 is mounted on a substrate 20 via a pedestal 21. The pedestal 21 is a stepped pedestal that can be installed by floating the moving means 10 from the substrate 20, and the air joint 18 and the air hose 19 are disposed in a space formed by the substrate 20 and the pedestal 21. Configuration. For this purpose, the moving means 10 integrated as a unit together with the guide shaft 16 separately provided on the substrate 20 can be moved together with the substrate 20 and installed anywhere on the end plate 2B. The installation position can be easily changed according to the size and type of the vehicle.
[0037]
FIG. 2 shows a configuration in which moving means 10A and 10D are provided on one side outer hood 1A and moving means 10B and 10C are provided on the other side outer hood. Also, the roof outer hood 1B is fixed with a set amount of overhang so that the opposing hood members come into contact with each other. This is because, even if the railway vehicle body is on a curved track, the fluctuation in the interval between the connecting portions near the center of the vehicle body is small. However, it is also possible to arrange another moving means 10 as necessary and to extend and contract the roof outer hood 1B.
[0038]
Further, the lower side outer top 1C of the vehicle body and the bottom outer side top 1D of the bottom may be provided. At this time, similarly to the roof outer hood 1B, the lower side outer hood 1C and the bottom outer hood 1D can be fixed by contacting opposing hood members with each other, as in the case of the roof outer hood 1B. It can also be configured to be telescopic.
[0039]
One side outer top 1A is expanded and contracted by the moving means 10A and 10D. However, the curve radius of the running track is large at the time of high-speed running, so that it can be fixed in a state of being pressed by a predetermined amount. The predetermined amount is an amount of pressure contact such that outer hood members can maintain a contact state when traveling at high speed on a curved track. In this case, the contact between the hood members on the inside of the curve is tight, but the thin centrally formed arc-shaped central part can be easily elastically deformed, reducing the contact force and impairing durability. Absent.
[0040]
When the vehicle travels at a low speed, such as when entering the station premises, there is no generation of wind noise, so it is not necessary to bring the opposed hood members into contact with each other. Therefore, the air spring member 11 can be contracted to separate the opposing top members from each other. Also, when traveling at a low speed on a curved track with a large curvature or at a stop, the interval between the connecting portions inside the curve is small, but the opposing hood members are separated from each other or the contact force is relaxed, so that they rub tightly. It does not cause any deterioration in durability.
[0041]
In the present embodiment, the outer hood for the connecting portion of the railway car running at high speed is configured to be expandable and contractable by the unitized moving means, so that even when traveling on a straight track, even when traveling on a curved track, The space of the vehicle connecting portion can be sealed with a synthetic rubber top member, so that wind noise during high-speed running can be reduced.
[0042]
Further, since the driving force for moving the top member is obtained from the air spring, the shape can be easily displaced when an external force is applied, and the driving source can be regarded as a driving source having air damper performance. For this reason, it is not necessary to strictly control the driving force, and when traveling on the main line, simple control of keeping the opposed outer hoods in a crimped state by a predetermined amount is performed irrespective of the curve shape of the traveling track. There is an excellent effect that the outer hood for the vehicle connecting portion facing the vehicle can be maintained in a contact state.
[0043]
Since the hood member 1 is disposed at the connecting portion between the vehicles, it is always in contact with the outside air, and is exposed to rain or exposed to sunlight. Therefore, it is preferable to use a rubber member having weather resistance (for example, a natural rubber base coated with ethylene propylene rubber) as the material of the top member 1.
[0044]
Having weather resistance means that it is resistant to environmental influences such as temperature and humidity, sunlight, rainwater, etc., does not deteriorate and does not lose color, and has stable quality.
[0045]
Ethylene propylene rubber is suitable as a material for the hood member 1 because it has excellent ozone resistance, chemical resistance, and heat resistance and does not discolor even when exposed to sunlight. Obviously, other materials may be used as long as they have similar properties.
[0046]
Furthermore, since it has a U-shaped cross section, the root is thick and the central part of the arc is thin, a predetermined amount of expansion and contraction can be easily obtained by moving one of the roots. In addition, by considering the position of the thin portion at the center, the outer surface of the hood member can be made flush with the outer surface of the vehicle during high-speed traveling, and wind noise can be further reduced.
[0047]
【The invention's effect】
According to the first aspect of the present invention, in a hood member having a U-shaped cross section including an inner side surface portion, an outer side surface portion, and an arcuate center portion connecting the both, a contact state between the arcuate center portions can be maintained. Therefore, it is possible to keep the arc-shaped central portions of the opposed hood members in constant contact with each other, so that the space of the vehicle connecting portion can be sealed irrespective of whether the vehicle is traveling straight or on a curve. Wind noise can be reduced.
[0048]
According to the invention according to claim 2, since the top member is a plate-shaped elastic body and the arc-shaped central portion is formed to be thin, it can easily hold a predetermined U-shape. Even in a contact state, durability can be obtained without strong contact.
[0049]
According to the third aspect of the present invention, the movement of the inner surface portion is caused by the expansion and contraction of compressed air by an air spring member, the movement holder for transmitting the expansion and contraction movement of the air spring member to the inner surface portion, and the air When moving at a high speed (straight track or small curvature track), the opposed hood members are separated from each other by a moving means including a separate spring member having a biasing force in a direction to compress the spring member. When the vehicle is running at low speed (with a large curvature orbit or in the station premises), it is possible to quickly perform a moving operation such as reducing or abutting the contact force between opposing hood members.
[0050]
According to the invention according to claim 4, the moving means is unitized on one substrate and can be installed at an arbitrary position of the vehicle connecting part, so that the moving means is unitized at a predetermined position of the vehicle connecting part. It is possible to install the moving means, and the moving means can be installed at an optimum position according to the size and type of the vehicle.
[Brief description of the drawings]
FIG. 1 is a perspective view showing that an outer hood for a high-speed railway vehicle according to the present invention is disposed at a vehicle connecting portion.
FIG. 2 is a front view of a vehicle end on which an outer top for a high-speed rail vehicle according to the present invention is mounted.
FIG. 3 is a cross-sectional view of the hood member according to the present invention.
FIG. 4 is a cross-sectional view of the moving means of the hood member according to the present invention.
FIG. 5 is a perspective view of the moving means of the hood member according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Top part 1a Root part 1b Arc-shaped central part 1c Inner surface part 1d Outer surface part 10 Moving means 11 Air spring member 13 Substrate 17 Spring member 20 Substrate T1, T2 Vehicle L Overhang length W Width

Claims (4)

A hood member having a U-shaped cross section including an inner side surface portion, an outer side surface portion, and an arc-shaped central portion connecting the both faces each other so that the arc-shaped central portions are in contact with each other from the respective mating surfaces of the vehicle to be connected. And the outer hood for the vehicle,
A moving means for moving the inner surface in the vehicle front-rear direction is provided, and by fixing the outer surface and moving the inner surface, it is possible to maintain a contact state between the arc-shaped central portions of the opposed hood members. An outer hood for a high-speed rail car, characterized in that: The outer hood for a high-speed rail vehicle according to claim 1, wherein the hood member is a plate-shaped elastic body, and the arc-shaped central portion is formed to be thin. An air spring member that expands and contracts by the inflow and outflow of compressed air, a moving holder that transmits expansion and contraction movement of the air spring member to the inner surface, and an urging force in a direction to shrink the air spring member. The outer hood for a high-speed railway vehicle according to claim 1, further comprising a spring member. The outer hood for a high-speed railway vehicle according to claim 3, wherein the moving means is mounted on a single substrate to form a unit, and can be installed at an arbitrary position on a vehicle wives surface.

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