JP2007076563A - Outside hood structure for vehicle connection unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outside hood structure for a vehicle connection unit capable of effectively reducing noise and the traveling resistance in a high-speed traveling mode, and excellently following large displacement input at the branch in a yard track when the structure is mounted on a connection unit of a high-speed railroad vehicle traveling at a speed exceeding 300 km/hour. <P>SOLUTION: The outside hood structure 1 for the vehicle connection unit to be mounted on both edge of a railroad vehicle facing each other at the connection unit of the railroad vehicle comprises a rubber membrane body 2 covering the connection part and forming a smooth surface between front and rear vehicles, a supporting member 3 supporting the rubber membrane body 2 outward of the vehicle from a mounting part of the rubber membrane body 2 on the vehicle connection faces, and an air chamber arranged between the supporting member 3 and the rubber membrane body 2 to adjust the rigidity between the vehicle connection faces of the rubber membrane body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an outer hood structure for a vehicle connecting portion that is attached to a connecting portion of a railway vehicle. More specifically, the outer hood structure for a vehicle connecting portion that can reduce aerodynamic noise and running resistance during high speed traveling and can follow a large displacement. It relates to the hood structure.

  Today, high-speed railway vehicles exceeding 300 km / hour such as the Nozomi Shinkansen have appeared, and the generation of wind noise during travel at the connecting part has become a problem. As a countermeasure, an outer hood for a vehicle connecting portion having a structure in which the connecting portion of the vehicle is covered with a rubber-like elastic body has been proposed. However, in the structure in which the connecting portion is simply covered with the rubber-like elastic body, there is a problem that fluttering occurs due to insufficient rigidity during high-speed traveling, and on the contrary, it becomes a noise generation source. Further, there is a large displacement input at the branch point of the on-site track of a high-speed railway vehicle, and the conventional outer hood for a vehicle connection part cannot always cope with such input.

Therefore, in order to solve such a new problem, instead of the conventional outer hood for a vehicle connecting portion made of a rubber elastic body, a predetermined air chamber is provided, and the rigidity of the rubber elastic body is reduced by the action of the air chamber. Various outer hoods for vehicle connection parts that have been secured have been proposed (Patent Documents 1 to 5).
JP-A-7-300070 (Claims etc.) JP-A-9-136647 (Claims etc.) JP-A-11-198805 (Claims etc.) Japanese Patent Laid-Open No. 11-291902 (Claims etc.) JP 11-291903 A (claims, etc.)

  Although the outer hood structure for a vehicle connecting portion described in Patent Documents 1 to 5 described above has made it possible to reduce aerodynamic noise and running resistance during high-speed running, today, further reduction of aerodynamic noise and running resistance is possible. In addition, further followability to a large displacement that is input when the curvature such as the on-site trajectory branch is small is also desired.

  Accordingly, an object of the present invention is to be attached to a connecting portion of a high-speed railway vehicle that exceeds 300 km / h, and can effectively reduce noise and running resistance during high-speed running more than ever before. An object of the present invention is to provide an outer hood structure for a vehicle connecting portion that can satisfactorily follow a large displacement input when a track is branched.

The present invention, in the outer hood structure for the vehicle connection portion that is mounted on the edge of the railway vehicle facing the connection portion of the railway vehicle,
A rubber film body that covers the connecting portion and can form a smooth surface between the front and rear vehicles, and a support that supports the rubber film body from the mounting portion of the rubber film body to the vehicle connecting surface toward the outside of the vehicle A member, and an air chamber that is disposed between the support member and the rubber film body and adjusts rigidity between vehicle connecting surfaces of the rubber film body,
It is characterized by.

  In the present invention, there is provided a smoothing member for smoothing a recess formed in a corner portion of the vehicle connection surface by the expanded air chamber and for locking a rubber film body stretched by the expansion of the air chamber. It is preferable that the air chamber is a cylindrical air chamber.

  According to the outer hood structure for a vehicle connecting portion of the present invention, the noise and running resistance during high-speed traveling can be more effectively improved than ever by being attached to a connecting portion of a high-speed railway vehicle exceeding 300 km / hour. In addition, the large displacement input at the time of branching of the campus trajectory can be satisfactorily followed.

Hereinafter, the present invention will be specifically described with reference to the drawings.
FIG. 1 shows a cross-sectional structure when an outer hood structure 1 for a vehicle connecting portion, which is a preferred example of the present invention, is mounted on a connecting portion of a railway vehicle. As shown in FIG. 1, a rubber film body 2 as a main body of an outer hood for a vehicle connecting portion is mounted on the railcar connecting surfaces 10 and 11 facing each other at the connecting portion between the front and rear railcars A and B. . The rubber film body 2 can be a rubber elastic body, a rubber-fiber composite, a rubberized cloth, or the like.

  The means for attaching the rubber film body 2 to the vehicle connection surface is not particularly limited. For example, through holes are formed at appropriate intervals along the edge of the rubber film body 2 in the width direction, The bolt 5 is fixed by screwing into the connecting surfaces 10 and 11 through the through hole. This bolt 5 can also be used at the same time to fix the support member 3 to the vehicle connection surfaces 10, 11. That is, the support member 3 includes an attachment portion 3a and a support portion 3b as shown in FIG. 1, and the attachment portion 3a has a through hole corresponding to a through hole formed along the edge of the rubber film body 2. A hole is formed, and the support member 3 is fixed by screwing the bolt 5 into the connecting surfaces 10 and 11 as described above through the through hole. Further, the support portion 3b supports the rubber film body 2 from the portion where the rubber film body 2 is attached to the connection surfaces 10 and 11 toward the outside of the vehicle. A smooth surface can be formed so as to cover substantially the same surface.

  In the present invention, it is important to dispose the air chamber 4 between the support portion 3 b of the support member 3 and the rubber film body 2. The air chamber 4 is formed of a rubber elastic body, an airtight bag such as a rubberized cloth, a resin processed cloth or the like, and includes an air supply / exhaust valve (not shown), and is formed to be inflatable and contractable by remote operation. As the air chamber, a cylindrical air chamber along the width direction of the vehicle connection surfaces 10 and 11 can be preferably used, but a plurality of spherical bodies are provided at appropriate intervals along the width direction of the connection surfaces 10 and 11. Also good.

  The air chamber 4 is for adjusting the rigidity of the vehicle connecting surfaces 10 and 11 of the rubber film body 2, and as shown in FIG. A smooth surface is formed with B. At this time, a smoothing member 6 that supports the vehicle outer side of the rubber film body 2 is installed on the vehicle connection surfaces 10 and 11 outside the rubber film body 2, and the vehicle connection surface 10 is expanded by the expanded air chamber 4. It is preferable to smooth the recess formed at the corners of 11 and to lock the rubber film body 2 stretched by the expansion of the air chamber 4. Thereby, it is possible to more effectively reduce aerodynamic noise and running resistance during high speed running exceeding 300 km / h.

  Further, when the railway vehicle travels on a premises track with many branch points, the air in the air chamber 4 is exhausted through an intake / exhaust valve (not shown), and the air chamber 4 is compressed as shown in FIG. State. Thereby, the tension of the rubber film body 2 is relaxed, and even when there is a large displacement input, the rubber film body 2 can sufficiently follow the input.

  The example shown in FIGS. 1 and 2 is a cross-section of only one side surface of the vehicle, but the outer hood structure for a vehicle connection portion of the present invention so as to continuously cover at least the upper surface and both side surfaces of the connection portion of the vehicle. Of course, 1 can be provided. Further, the rubber film body 2 may have a structure in which the upper surface and both side surfaces of the vehicle connecting portion are divided, or may have a structure in which the upper surface and both side surfaces are integrated, and only the lower surface portion is divided. Needless to say, various forms can be considered.

Hereinafter, a test example of the outer hood structure for a vehicle connecting portion of the present invention will be described.
Wind tunnel test A model having a body cross section 1/1 of the outer hood structure 1 for a vehicle connecting portion shown in FIGS. 1 and 2 was made as a prototype, and air pressure of 98 to 196 kPa was sealed in the air chamber 4 thereof. After that, it was confirmed that there was no fluttering of the rubber film body 2 and that there was an obvious noise reduction effect when the prototyped vehicle outer hood structure 1 was blown in the vehicle traveling direction at a wind speed of 360 km / hour. I was able to.

Displacement absorbing test Figure 1 and 2 to 1/5 of a vehicle connecting portion for outer hood structure 1 shown scale - where a prototype model of Le were biased tests assuming the actual mains and lateral line (private branch track) travel, It was confirmed that the rubber film body 2 can be followed by appropriately adjusting the air chamber 4.

It is sectional drawing when the outer hood structure for vehicle connection parts which is a suitable example of this invention is mounted | worn with the connection part of a railway vehicle. It is sectional drawing which shows the state at the time of a local track | orbit travel of the outer hood structure for vehicle connection parts shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer hood structure for vehicle connection parts 2 Rubber film body 3 Support member 3a Attachment part 3b Support part 4 Air chamber 5 Bolt 6 Smoothing member

Claims (5)

In the outer hood structure for a vehicle connection part mounted on the edge of the railway vehicle facing the connection part of the railway vehicle,
A rubber film body that covers the connecting portion and can form a smooth surface between the front and rear vehicles, and a support that supports the rubber film body from the mounting portion of the rubber film body to the vehicle connecting surface toward the outside of the vehicle A member, and an air chamber that is disposed between the support member and the rubber film body and adjusts rigidity between vehicle connecting surfaces of the rubber film body,
The outer hood structure for the vehicle connection part characterized by this. The outer hood structure for a vehicle connecting portion according to claim 1,
A smoothing member that supports the vehicle outer side of the rubber film body is installed on the vehicle connection surface on the vehicle outer side than the rubber film body.
The outer hood structure for the vehicle connection part characterized by this. The outer hood structure for a vehicle connecting part according to claim 1 or 2,
The air chamber has a cylindrical cross section;
The outer hood structure for the vehicle connection part characterized by this. In the outer hood structure for the connecting portion for mounting on the vehicle edge facing the connecting portion of the vehicle,
A rubber film body that covers the connecting portion and can form a smooth surface between the front and rear vehicles, and a support that supports the rubber film body from the mounting portion of the rubber film body to the vehicle connecting surface toward the outside of the vehicle A member, and an air chamber that is disposed between the support member and the rubber film body and adjusts rigidity between vehicle connecting surfaces of the rubber film body,
The outer hood structure for the vehicle connection part characterized by this. The outer hood structure for a vehicle connecting portion according to claim 4,
Comprising a smoothing member for installation on the vehicle connection surface in order to support the vehicle outer side of the rubber film body, which is installed outside the rubber film body;
The outer hood structure for the vehicle connection part characterized by this.

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