JPH11291903A - External bellows for coupling part of rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an external bellows for the coupling part of rolling stock of as high a running speed as over 300 km/h, which can reduce the noise emission in high speed running effectively, absorb a large displacement input at a branch of the track in good performance, improve the working effectiveness in mounting, and which allows taking an easy countermeasure for eventual failure in emergency. SOLUTION: This bellows is to cover the coupling part of rolling stock in such a manner that the same periphery is generated as the peripheries of the rolling stock substantially and prevent noise emission under high speed running, is made of an elastic material to allow following-up after the relative movement of the car parts joined, and has a plurality of air chambers 4 for maintaining the stiffness of the elastic member, wherein a dividing part 8 is provided in one place between the air chambers 4 so that the air chambers 4 on both sides thereof can be separated or connected any as desired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. 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 vehicle connecting portion for preventing noise during high-speed running.

[0002]

2. Description of the Related Art Heretofore, an outer hood for a vehicle connecting portion to be attached to a connecting portion of a high-speed railway vehicle exceeding 300 km / h has not been put to practical use. However, today, high-speed railway vehicles, such as the Nozomi Shinkansen, have a speed of over 300 km / h, and the generation of wind noise when traveling at the connecting portion has become a problem. An outer hood for a vehicle connecting portion having a structure that covers the connecting portion has been proposed.

[0003] However, the outer hood for a vehicle connecting portion of a rubber-like elastic body proposed up to now has a problem that flapping occurs due to lack of rigidity at the time of high-speed running, and rather causes noise. In addition, a large displacement input is made at a branch point of the track of a high-speed railway vehicle, and the conventional outer hood for a vehicle connecting portion is not always sufficient for such input.

As a means for solving such a problem, the present inventors have constructed an outer top for a vehicle connecting portion with an elastic body so as to be able to follow the relative movement between the vehicle attachments, and ensured its rigidity even at high speed running. By providing a plurality of air chambers in order to reduce noise during high-speed running, it has been found that good absorption of large displacement input when the track branches off can be obtained.

[0005]

The vehicle connecting portion has a small space, and it is very difficult to mount the outer cover for the vehicle connecting portion. In order to secure this space, disconnecting the vehicle connection requires not only disconnecting the coupler but also removing the inner hood and the vehicle body mounting damper, which has a problem in restorability.

Accordingly, an object of the present invention is to provide a motor having a speed of 300 km / h.
Attached to the connection of high-speed railway vehicles that exceed the time, it is possible to effectively reduce noise during high-speed traveling,
In addition, it is an object of the present invention to improve the mounting workability and to facilitate the processing in the event of an emergency or the like in an outer hood for a vehicle connecting portion capable of favorably absorbing a large displacement input at the time of branching of a track.

[0007]

In order to solve the above-mentioned problems, an outer top for a vehicle connecting portion of the present invention covers a connecting portion of a railway vehicle so as to have substantially the same outer periphery as the outer periphery of the vehicle. An outer hood for a vehicle connecting portion for preventing noise during high-speed running, wherein a material of the outer hood for the vehicle connecting portion is formed of an elastic body so as to be able to follow a relative movement between vehicle attachments, and In order to secure the rigidity of the air chamber, a plurality of air chambers are provided, and a dividing portion is provided at one place between the air chambers so that the air chambers on both sides can be freely separated and connected. is there.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. FIG. 1 shows a cross-sectional structure when an outer top 1 for a vehicle connecting portion, which is a preferred example of the present invention, is mounted on a coupler 2 of a railway vehicle. FIG. 2 shows a state in which the outer cover 1 for a vehicle connecting portion is viewed from the side of the vehicle, and FIG. 3 shows an enlarged view of A in FIG. As can be seen from FIGS. 1 to 3, this hood 1 is formed between vehicles 3a and 3b, each of which has six independent cylindrical air chambers 4 curved so as to coincide with the outer periphery of a railway vehicle. The surface 7 forms an outer circumference substantially the same as the outer circumference of the railway vehicle. Each of the air chambers 4 is connected in parallel. The vehicle is attached to the vehicle mounting bracket 6 via the mounting portions 5 of the air chambers at both ends, for example.

Unlike the case where the connecting portion is covered by a single sheet-shaped top, by providing the air chamber 4 in the top 1 as shown in the figure, sufficient rigidity can be obtained even during high-speed running, and flapping is prevented. At the same time, it is possible to satisfactorily absorb a large displacement input at the time of branching of the track.

The air chamber 4 in the preferred embodiment shown in FIG.
Although there are six rooms, the number of rooms is not limited to six, and should be selected as appropriate from the viewpoint of securing rigidity of the hood and the ability to follow relative movement between the vehicle mounting during vehicle running.

The material of the hood 1 shown in the figure is made of an elastic material so that it can follow the relative movement between the mountings of the running vehicle. Specific examples include a rubber material and a cloth-rubber composite. The thickness of the elastic body is also selected from the rigidity at the time of high-speed running and the followability to the relative movement between vehicle attachments. For example, in the case of a rubber material, a thickness of about 5 mm can be suitably used.

In the present invention, a dividing portion that can freely disconnect and connect the air chambers 4 on both sides at one location between the air chambers 4, preferably between two air chambers 4 in the center of the hood 1. 8 is provided. In the dividing unit 8, for example, using a dividing means such as a magic tape or a fastener, the division can be performed as shown in FIG.

[0013] A noise test device provided with a gap similar to that of a connecting portion of a high-speed rail car is blown to artificially create noise generating conditions similar to those at the time of high-speed running of a train. When a noise test was performed at 350 km / hour, the case of the hood shown in FIG.
As noise of 91 to 97. The height of the projection on the outer surface of the hood was 15 mm.

[0014]

As described above, when the outer hood for a vehicle connecting portion of the present invention is mounted on a connecting portion of a high-speed railway vehicle having a speed exceeding 300 km / h, the noise at the time of high-speed running can be reduced. Large displacement input when the curvature is small, such as a track branch, can be absorbed well, and at the same time, the installation of the split part improves the mounting workability. Thus, it is possible to easily perform processing in the event of an emergency abnormality.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view when a vehicle connecting portion outer hood, which is a preferred example of the present invention, is mounted on a connecting portion of a railway vehicle.

FIG. 2 is a side view showing a state in which the outer hood for a vehicle connecting unit shown in FIG. 1 is viewed from a side of the vehicle.

FIG. 3 is an enlarged view showing a portion A in FIG. 2;

FIG. 4 is an enlarged view showing a dividing unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer top for vehicle connection part 2 Connection part 3a, 3b Vehicle 4 Air chamber 5 Mounting part 7 Outer surface 8 Division part

Claims (1)

[Claims] 1. An outer top for a vehicle connecting portion for covering a connecting portion of a railway vehicle so as to have substantially the same outer circumference as the outer periphery of the vehicle, and for preventing noise during high-speed running, comprising: The outer hood is made of an elastic body so that it can follow the relative movement between the vehicle mountings, and has a plurality of air chambers for securing the rigidity of the elastic body. An outer hood for a vehicle connecting part, wherein a dividing part capable of freely separating and connecting the air chambers on both sides is provided.