JPH08133077A - Rapid vehicle - Google Patents

Abstract

PURPOSE: To provide a rapid vehicle that is able to sharply reduce the extent of noise and aerodynamic drag in time of high speed traveling. CONSTITUTION: An outer hood 5 to be composed of two flexible plate members 5b and 5b so as to cover a clearance between car bodies is installed in almost the whole circumference of a connecting side peripheral edge of each body end of both adjacent car bodies 1 and 1 connected. With this constitution, utilizing the characteristics of these flexible plate members, even in rectilinear traveling as well as curve traveling at high speed, an interval between both the car bodies is smoothed in terms of linkage as reducing a clearance as well as a level difference between both the car bodies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high speed vehicle in which a plurality of vehicle bodies are connected in series via a connector.

[0002]

2. Description of the Related Art Some high-speed vehicles have a plurality of bodies connected in series via a coupler. Shinkansen vehicles are typical examples. It is known that in high-speed vehicles, the gap between vehicle bodies causes increased air resistance and noise during high-speed driving.

As a countermeasure against this, in a Shinkansen vehicle, as shown in FIG.
As shown in FIG. 1, each vehicle body 1 facing each other via a coupler 2,
The outer hoods 3 and 3 that cover the side surface portions between the vehicle bodies are provided at the edge portions on both sides of the end portion 1 in the width direction in a protruding manner. Specifically, as shown in FIG. 19, the rubber plate 4 is made to protrude toward the center of the gap over substantially the entire edge portions on both sides in the width direction of the vehicle body end.

[0004]

In such a structure, although the vacant gaps on the side surfaces are certainly reduced, the rubber plates 4 and 4 are separated from each other and are independent from each other.
As shown in (a) and (b), when the vehicle body is displaced at a high speed, a step is formed between the rubber plates 4 and 4.

When such a step occurs, the airflow flowing from the side surface of the vehicle body along the side surface of the rubber plate 4 may be disturbed, or a part of the airflow may flow into the interior through the step.
This causes the phenomenon that the air inside is sucked out from the step.

Therefore, the outer hood used for Shinkansen vehicles has little effect of reducing noise and aerodynamic resistance, and improvement of this point is desired. The present invention has been made in view of the above circumstances, and an object thereof is to provide a high-speed vehicle capable of significantly reducing noise and aerodynamic resistance caused by a gap between vehicle bodies during high-speed traveling. To do.

[0007]

In order to solve the above-mentioned problems, a high-speed vehicle according to a first aspect of the present invention is flexible so as to cover a gap between vehicle bodies on substantially the entire outer peripheral edge of the vehicle body at the connecting side. There is an outer hood composed of members.

In addition to the above objects, a high speed vehicle according to a second aspect of the present invention is intended to achieve both reduction of noise and aerodynamic resistance during high speed running and reduction of noise and aerodynamic resistance during large displacement between vehicle bodies. A flexible plate member provided so as to project the outer sail according to claim 1 from substantially the entire circumference of each facing vehicle body end to the center of the gap between the vehicle bodies, and to cover the same gap, and these projecting plate members. In the gap between the vehicle body and the mating portion formed by superposing the tip end portions of each other in the vehicle body coupling direction in the gap, and coupling the overlapped portions so as to be displaceable to the opening side, in a direction intersecting the mating portion. A first link having an intermediate portion connected to the overlapping portion via a first universal joint, which is arranged to extend, and an end portion of the first link projecting from an end surface of the vehicle body, respectively, are provided. In addition, move in a direction perpendicular to the vehicle body connection direction. A freely second link, and movably connected between each end of the tip and the first link of the second link, the first link, substantially Z the second link
The second universal joint constitutes a three-dimensionally displaceable link mechanism combined with each other.

In order to achieve the same object as described above, a fan according to a third aspect of the present invention has the outer sail according to the first aspect, in which hollow expandable / contractible wall-shaped portions are continuously arranged in the circumferential direction. A circumferential wall-shaped expansion portion that projects from almost the entire circumference of each facing vehicle body end toward the center of the gap between the vehicle bodies and covers the gap, and a pressure supply source that is connected to the wall-shaped portion and supplies a pressure medium into the expansion portion. A discharge valve for discharging the pressure medium from the inside of the wall portion to the outside, and a control means for controlling the pressure supply source and the discharge valve according to the displacement between the vehicle bodies. Especially.

[0010]

According to the high speed vehicle of the first aspect, almost the entire gap between the vehicle bodies is covered with the outer hood, and the outer hood is made of a flexible member. This means that whether the vehicle is traveling straight or during high-speed vehicle-to-vehicle displacement (curving), the outer hoods between the vehicles minimize the gap between the vehicles and the step between the vehicles as much as possible. Smoothed.

This considerably improves noise and aerodynamic drag. According to the high speed vehicle of the second aspect, almost the entire gap between the vehicle bodies is covered by the flexible plate member protruding from substantially the entire circumference of the facing vehicle ends. Even when the vehicle body is displaced (curved running), the vehicle body is smoothed by the plate member while minimizing the gap between the vehicle bodies and the step between the vehicle bodies.

As a result, noise and aerodynamic resistance during high speed traveling are improved. Also, during traveling such as when the vehicle body distance is greatly displaced due to a sharp curve such as low-speed traveling, on the side where the vehicle body distance greatly expands, the mating part of the plate members opens to accommodate the change in the vehicle body distance and the vehicle body distance becomes narrower. On the side, the plate member undergoes buckling deformation to accommodate changes in the vehicle body spacing.

Due to this displacement, the plate member is required to have flexibility which is contrary to the rigidity required for aerodynamic stability. Therefore, the mating portion of the plate member, on the side where the vehicle body spacing increases,
It is held by a link mechanism that displaces following the side where the vehicle body becomes narrower, giving the plate member the rigidity necessary for stability of aerodynamic stability, reducing noise and air resistance during high-speed running, and It satisfies both the followability at the time of large displacement.

According to the high-speed vehicle of the third aspect, almost the entire gap between the vehicle bodies is covered by the inflated portion protruding from the vehicle end. As a result, when driving straight at high speed,
The vehicle body is smoothed by the expansion section while minimizing the gap between the vehicle bodies and the step between the vehicle bodies.

When the vehicle travels on a curve with a small displacement between the vehicle bodies during high-speed traveling, the expansion portion itself deforms elastically to absorb any gaps or steps that are to occur and maintain smoothness. Also, when there is a large space between vehicles, such as a sharp curve during low-speed travel, and the elastic deformation of the expansion itself cannot absorb the gaps or steps, the pressure medium from the pressure supply source flows in or out according to the displacement between the vehicles. The pressure medium inside the expansion section is discharged from the valve, and the amount of air in the wall-shaped portion forming each part of the expansion section is changed.

As a result, on the side where the vehicle body space is widened, the pressure medium is introduced to absorb the gaps and steps that are to be generated, and on the side where the vehicle body space is narrowed, excess air in the wall-shaped portion is exposed to the outside. It is discharged and made to have appropriate elasticity to absorb gaps and steps.

That is, the gaps and steps between the vehicle bodies are absorbed in response to changes in the vehicle body spacing. As a result, as in the case of claim 2, the outer hood causes noise during high-speed traveling,
It satisfies both the reduction of air resistance and the followability at the time of large displacement between vehicle bodies.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The first embodiment of the present invention shown in FIGS.
A description will be given based on the embodiment. In the drawings,
The same parts as those described in the section “Prior Art” are designated by the same reference numerals, and the description thereof will be omitted. In this section, different parts will be described.

That is, FIG. 1 shows a view of a high-speed vehicle to which the present invention is applied, for example, a Shinkansen vehicle, in the same direction as seen from the AA direction in FIG. 1a is a coupler 2
2 shows end faces of the vehicle body 1 facing each other through. An outer hood 5 is provided almost all around the outer peripheral edge of the end face 1a so as to cover the gap between the vehicle bodies as shown in the plan view between the vehicle bodies in FIG. 2 and the side surface between the vehicle bodies in FIG. It is provided.

The outer hood 5 has a structure constructed by combining a hood body 5a and a Z-shaped link mechanism 10.
That is, as shown in FIG. 4, the hood body 5a has a flexible plate member having an L-shaped cross section, for example, a pair of L members.
Flexible rubber plates 5b, 5b (flexible members) having a shaped cross section
A rubber block 6 that is assembled into a substantially T shape by facing the vehicle body coupling direction is adopted. And this rubber block 6
However, the combined portion is directed inward, and a large number are annularly connected so as to follow the outer peripheral edge of the end face 1a, thereby forming the entire hood body. The overlapping ends of the rubber plates 5b, 5b are attached so that there is no gap.

The end of one side 5c of the rubber plate 5b protruding toward the outer peripheral edge of the end surface of the vehicle body 1 is fixed to the outer peripheral edge of the end surface 1a via an angle member 7 as a supporting member.
As a result, the entire gap between the vehicle bodies 1 and 1 is covered with the rubber plates 5a and 5a protruding from the end surface 1a.

Further, the plate portions between the tips of the overlapping rubber plates 5b and 5b and the corners 5d are thinner than the other portions, and the other side portion 5e of the rubber plate 5a is attached to the tip. Easy to bend from 5f.

As a result, the other side portions 5e, 5e overlapping in the connecting direction can be displaced to the open side. A channel member 8 is attached as a reinforcing member to the inner surface of the corner 5d of the rubber plate 5b.

Inside the hood main body 5a, link mechanisms 10 are provided at a plurality of locations, for example, two locations on the upper and right sides and one location on the width side. The link mechanism 10 has the same structure, one of which is shown in FIGS. 4 to 6.

FIG. 4 is a view of the link mechanism 10 on the upper left side in FIG. 1 as seen from the direction AA, and FIG. 5 is an enlarged front view of the link mechanism 10 on the upper left side. FIG. 6 shows a view as seen from the direction of the arrow C in FIG. 4, and 11 in the figure is a rod-shaped link 11 (first link is arranged immediately below the other side portions 5e, 5e which form the mating portion. Equivalent).

The link 11 extends in an oblique direction intersecting with the other side portions 5e, 5e. A spherical joint 12 is provided at an intermediate portion that intersects the other side portions 5e, 5e of the link 11.
(Corresponding to the first universal joint) is provided.

The intermediate portion of the link 11 is rotatably coupled to the intermediate support member 13 provided at the tip of the other side portion 5e, 5e via the spherical joint 12. Further, a pair of lever-shaped links 14 and 14 (corresponding to a second link) are provided on the end surface 1a of each vehicle body 1 so that the ends of the links 12 face. The bases of the links 14 and 14 are both brackets 16a and bolts / nuts 16
It is supported rotatably in the vehicle width direction by b.
As a result, the entire link 14 is rotatably supported in a direction perpendicular to the vehicle body connecting direction.

Each link 14 has a protruding length so as to be combined with the link 12 in a Z shape. The tip end of each link 14 and each end of the link 12 are spherical joints 15
The link mechanism 10 is rotatably connected to each other via the, and is displaceable in a three-dimensional direction that is Z-shaped when viewed from a plane.

With this link mechanism 10, the outer hood 5 is always
The intermediate portion of the vehicle body is held in the middle of the space between the vehicle bodies 1 and 1. In this embodiment, the hood main body 5a is divided into a mating portion α and a vehicle end mounting portion β depending on its function.

Thus, the clearance between the car bodies 1 and 1 of the Shinkansen vehicle thus constructed is a smooth hood body 5a which is continuous over substantially the entire outer peripheral surface of the car body 1, more specifically, almost at the opposite vehicle ends. Flexible rubber plates 5b, 5b protruding from the entire circumference
Is covered by.

As a result, when the Shinkansen vehicle travels straight at high speed, the airflow flowing along the vehicle body 1 flows along the connecting direction of the vehicle body 1 without being disturbed on the way. Further, when the vehicle-to-vehicle displacement is such that the vehicle is traveling in a curve at a high speed, the rubber plates 5b and 5b are elastically deformed to minimize the gaps and steps, and the gaps between the vehicle bodies 1 and 1 are smoothed. Keep up.

Thus, between the bodies of the Shinkansen vehicles, the rubber bodies 5b, 5b are used to separate the bodies 1 and 1 during straight traveling at high speed and during displacement (curving) between the vehicles at high speed.
The gap between them is made as small as possible, and the step between the vehicle bodies is made as small as possible, and smoothing is performed.

Therefore, noise and aerodynamic resistance during high-speed traveling due to the gaps and steps between the vehicle bodies can be greatly reduced. Moreover, since the gap between the vehicle bodies 1 and 1 is covered with the rubber plates 5b and 5b which can be displaced in accordance with the displacement between the vehicle bodies,
At the time of traveling such that the vehicle body distance is largely displaced, such as a sharp curve at low speed traveling, on the side where the vehicle body distance greatly extends, the mating portion α of the rubber plates 5b, 5b opens as shown in FIG.
Corresponding to changes in vehicle body spacing, on the side where the vehicle body spacing becomes narrower,
As shown in FIG. 8, the vehicle body mounting portion β of the rubber plates 5b, 5b
The (one side portion 5c) receives a force in the compression direction and causes buckling deformation, which corresponds to a change in the vehicle body interval.

In addition, since the joint portion α is held by the link mechanism 10, it is possible to obtain the rigidity required for aerodynamic stability while enhancing the followability of large displacement between the vehicle bodies by the rubber plates 5b, 5b.

That is, the rubber plates 5b, 5b are required to have flexibility in order to obtain the ability to follow large displacements between the vehicle bodies. However, this is contrary to the rigidity required for aerodynamic stability.

Therefore, the mating portion α is held by the Z-shaped link mechanism 10 that follows the side where the vehicle body spacing is widened and the side where the vehicle body spacing is narrowed, while keeping the position of the mating portion α unchanged, and the rigidity point is improved. I am satisfied.

Specifically, during straight running, the link 1 of each link mechanism 10 as shown in FIGS.
2 and 14 are arranged in a Z shape and hold the joint portion α of the plate rubbers 5b and 5b so that the gap between the vehicle bodies becomes a smooth surface.

In each link mechanism 10, the link 12 tilts with respect to the spherical joint 12 as a fulcrum as shown in FIGS. Tilts with the pivotal support of the base as a fulcrum, and follows the three-dimensional displacement of the vehicle body and is displaced in the extending direction.

On the contrary, each link mechanism 10 contracts in the contracting direction while following the three-dimensional vehicle body displacement as shown in FIGS. Displace.

That is, the link mechanism 10 can provide the outer hood 5 with the rigidity required for the stability of aerodynamic stability. This makes it possible to satisfy both the reduction of noise and air resistance during high-speed traveling and the followability during large displacement between vehicle bodies.

As a result, the flexible rubber plate (plate member) 5
By combining b and 5b with the Z-shaped link mechanism 10, both aerodynamic stability and displacement followability can be made compatible (the object of the invention of claim 2).

The cross-sectional shape of the flexible member, the shape of the link, and the shape of the joint are not limited to those in the above embodiment. 12 to 17 show a second embodiment of the present invention (an embodiment of the invention described in claim 3).

In this embodiment, the outer hood is constructed by using the expanding portion which expands and contracts by injecting and discharging the pressure medium. Specifically, FIG. 12, FIG. 13, FIG. 16 and FIG.
As shown in FIG. 7, a pair of expansion parts 21 are fixed to the outer peripheral edges of the facing end faces 1a of the vehicle bodies 1 and 1 through a peripheral wall-shaped fixing part 20 over substantially the entire circumference.

The expansion section 21 has a peripheral wall shape in which a plurality of hollow expandable / contractible wall-shaped portions 22 each made of an elastic material such as rubber are continuously arranged in the circumferential direction. ing. The expansion section 21 has a peripheral wall formed of a material having elasticity such as rubber.
You may divide.

These inflated portions 21 project toward the center of the gap between the vehicle bodies. The tip portions of these inflated portions 21 abut each other at the center of the gap and cover the entire gap between the vehicle bodies.

The wall-shaped portion 22 constituting each expansion portion 21 is
As shown in FIG. 14, both are connected to a supply port of an air pressure source 23 (pressure supply source) provided in the vehicle body 1 through a pipe 24. The air pressure source 23 is composed of, for example, an air pressure unit formed by combining a compressor, an accumulator, etc., and is capable of supplying air to each wall-shaped portion 22 through a pipe 24.

A supply side relief valve 25 is provided in the pipe 24 so that the air entering the wall-shaped portion 22 can be controlled. The wall-shaped portion 22 is provided with a discharge-side relief valve 26 (discharge valve) that opens to the atmosphere so that the air inside can be discharged to the atmosphere.

Further, the air pressure source 23 and the supply side relief valve 2
5. The discharge side relief valve 26 is connected to the control unit 27 which is composed of, for example, a microcomputer. An inter-vehicle detection sensor 28 that detects the amount of the gap between the vehicle bodies is connected to the control unit 27.

The control unit 27 does not operate the supply side relief valve 25 and the discharge side relief valve 26 of the wall portion 22 when the displacement between the vehicle bodies is small. The discharge-side relief valve 26 of the wall-shaped portion 22 on the contracting side is set to "open", and the supply-side relief valve 25 of the wall-shaped portion 22 on the side where the vehicle body interval is extended is set to "open". The amount of air in the wall portion 22 can be controlled according to the degree of displacement between the vehicle bodies.

Further, in order to make the behavior in the expansion / compression direction constant, the wall-shaped portion 22 has the tip wall thickness varied as shown in FIG. Specifically, each part of the tip portion of the wall-shaped portion 22 has a linear shape as shown by a dashed line as it expands due to the inflow of air (state when expanded).
The thickness dimension is changed so as to be bent inward as shown by a solid line (a state at the time of compression) as a load in the direction of compression is applied from the tip.

In the second embodiment, the same parts as those in the first embodiment described above are designated by the same reference numerals and the description thereof is omitted. Thus, according to the Shinkansen vehicle (high-speed vehicle) configured as described above, almost the entire gap between the vehicle bodies is covered by the inflated portion 21 protruding from the vehicle end.

As a result, at the time of straight running at high speed, as shown in FIG. 16, between the vehicle bodies, the expansion portions 21 make the gap between the vehicle bodies as small as possible and the step between the vehicle bodies as small as possible. Smoothed.

When the vehicle is traveling on a curve with a small displacement between the vehicle bodies during high-speed traveling, neither the supply-side relief valve 25 nor the discharge-side relief valve 26 is activated, and the expansion portion itself is elastically deformed.
Maintains smoothness by absorbing gaps and steps that are about to occur.

Therefore, as in the first embodiment, noise and aerodynamic resistance can be greatly reduced during high speed running. Also, when the vehicle body spacing is large such as a sharp curve at low speed running, and the elastic deformation of the expansion part alone cannot absorb the gap or step,
As shown in FIG. 17, the air inflow from the air pressure source 23 and the air exhaust from the exhaust relief valve 26 are controlled according to the displacement between the vehicle bodies, and the amount of air in the wall-shaped portion 22 constituting each part of the expansion portion 21 is controlled. Change.

That is, on the side where the vehicle body space is widened, the air from the air pressure source 23 is made to flow into the wall-shaped portion 22 by the supply relief valve 25 that opens by the detection signal of the inter-vehicle detection sensor 28.

This eliminates (absorbs) a gap or a step that is about to occur. On the other hand, on the side where the vehicle body interval is narrow, excess air in the wall-shaped portion 22 that is excessive by being compressed by the discharge relief valve 26 that opens by the detection signal of the inter-vehicle detection sensor 28 is discharged to the outside. Discharged
It absorbs gaps and steps with appropriate elasticity.

That is, the amount of air inside the expansion section 21 changes in response to the change in the vehicle body interval, and absorbs the gaps or steps between the vehicle bodies. Therefore, according to the present embodiment as well, similar to the first embodiment, it is possible to satisfy both the reduction of noise and air resistance during high-speed traveling and the followability during large displacement between vehicle bodies. When servicing an internal device such as the coupler 2, if the air in the expansion section 21 is exhausted to the outside, it is put into the inside through the expansion sections 21 and 21.

[0058]

As described above, according to the invention described in claim 1, noise and aerodynamic resistance due to the gap between the vehicle bodies during high speed traveling can be significantly reduced. According to the inventions of claims 2 and 3, in addition to the above effects, it is possible to achieve both reduction of noise and aerodynamic resistance during high-speed traveling and reduction of noise and aerodynamic resistance during large displacement between vehicle bodies. You can

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of an outer hood viewed from a vehicle body end surface direction, which is a main part of a first embodiment of the present invention.

FIG. 2 is a view seen from above the vehicle body, showing a change in the outer hood when traveling straight at high speed.

FIG. 3 is a view seen from a side surface of the vehicle body.

FIG. 4 is an enlarged cross-sectional view showing the periphery of the link mechanism as seen from the line BB in FIG.

FIG. 5 is a side view around the link mechanism.

6 is a plan view around the link mechanism as seen from the direction of arrow C in FIG.

FIG. 7 is a cross-sectional view for explaining the behavior of the hood main body and the link mechanism on the extension side when the vehicle body is largely displaced in the direction in which the vehicle body space is widened.

FIG. 8 is a sectional view for explaining the behavior of the hood body and the link mechanism on the contracted side.

FIG. 9 is a view seen from above the vehicle body for explaining the behaviors of the hood body and the link mechanism when the vehicle body is largely displaced in a direction in which the vehicle body space is widened.

FIG. 10 is a diagram showing a side surface of the vehicle body on the extension side at the time of the displacement.

FIG. 11 is a view showing a side surface of the vehicle body which is a contraction side at the time of the displacement.

FIG. 12 is a diagram showing a structure of an outer hood viewed from a vehicle body end surface direction, which is a main part of a second embodiment of the present invention.

FIG. 13 is a view showing a lateral shape of the outer hood.

FIG. 14 is a view for explaining a mechanism for applying internal pressure to the outer hood.

FIG. 15 is a view showing the structure of a wall-shaped portion that constitutes the expansion section.

FIG. 16 is a view seen from above the vehicle body showing a change in the outer hood when traveling straight at high speed.

FIG. 17 is a diagram for explaining the behavior of the inflating section when the vehicle body is largely displaced in the direction in which the vehicle body space is widened.

FIG. 18 is a diagram showing an example of a high-speed vehicle.

FIG. 19 is a cross-sectional view taken along the line BB in FIG. 18, showing the outer hood provided between the vehicle bodies of the high-speed vehicle.

FIG. 20 is a view for explaining a problem of the outer hood.

[Explanation of symbols]

1 ... Vehicle body 3, 5 ... Outer hood 4 ... Rubber plate (flexible member, flexible plate member) 5a
... hood body 10 ... link mechanism 11 ... link (first link) 12 ... spherical joint (first universal joint) 1
3 ... Intermediate support member 14 ... Link (second link) α ... Joining portion 2
DESCRIPTION OF SYMBOLS 1 ... Expansion part 22 ... Wall-shaped part 23 ... Air pressure source (pressure supply source) 25 ... Supply side relief valve 26 ... Discharge side relief valve 28 ... Inter-vehicle detection sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motohiro Suzuki 10 Oe-cho, Minato-ku, Aichi Prefecture Nagoya City Mitsubishi Heavy Industries, Ltd.Nagoya Aerospace Systems Works (72) Inventor Kiyoshi Okada Nakamura-ku, Aichi Prefecture Stations 1-4-1 Tokai Passenger Railway Co., Ltd. (72) Inventor Matori Ito 1-4-1 Meieki, Nakamura-ku, Aichi Prefecture Tokai Passenger Railway Co., Ltd.

Claims (3)

[Claims] 1. A high-speed vehicle in which a plurality of vehicle bodies are connected in series via a coupler, and is flexible so as to cover a gap between the vehicle bodies on substantially the entire circumference of an outer peripheral edge of the vehicle body at the connection side. A high-speed vehicle having an outer hood made of flexible material. 2. The outer hood is provided with a flexible plate member that is provided so as to extend from substantially the entire circumference of each facing vehicle body end toward the center of the gap between the vehicle bodies, and to cover the gap. And a mating portion formed by superposing the tip end portions of each other in the vehicle body coupling direction in the gap, and coupling the overlapped portions so as to be displaceable to the opening side, and intersecting the mating portion in the gap between the vehicle bodies. And a first link having an intermediate portion connected to the overlapping portion via a first universal joint and extending from the end surface of the vehicle body toward which the end portion of the first link faces. And a second link that is movable in a direction perpendicular to the vehicle body coupling direction, and is movable between the tip end of each of the second links and each end of the first link. Connecting to the first link,
The second universal joint that constitutes a link mechanism that is formed by combining the second links in a substantially Z shape and is displaceable in a three-dimensional direction, and a high speed according to claim 1. vehicle. 3. The outer hood is formed by arranging hollow inflatable / contractible wall-shaped portions continuously in the circumferential direction, and projecting toward the center of the gap between the vehicle bodies from substantially the entire circumference of each facing vehicle body end. And a pressure supply source connected to the wall-shaped portion for supplying a pressure medium to the expansion member, and a pressure medium discharged to the outside from the wall-shaped portion provided in the wall-shaped portion. The high-speed vehicle according to claim 1, further comprising: a discharge valve for controlling the pressure supply source and the discharge valve for controlling the discharge valve according to a displacement between the vehicle bodies.