JPH10152049A - Floor structure of railway vehicle structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a railcar vehicle structural body which can reduce vibration of a floor plate at low cost and attain low noise. SOLUTION: This railcar structural body, which is formed by combining and jointing a base frame, a side structural body, a roof structural body, and an end structural body, is provided with a stopper 13 which secures a vibration proofing elastic body 10 at a joist 9 for supporting the floor 8 of the base frame. It is thus possible to provide a railcar structural body with an excellent cabin noise suppressing effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a railway vehicle,
In particular, the present invention relates to a floor structure of a railway vehicle structure suitable for a railway vehicle running at high speed.

[0002]

2. Description of the Related Art Conventionally, in a floor structure of a railway vehicle structure, an anti-vibration rubber is arranged between a floor plate with which an occupant is in contact and a frame supporting the floor plate. With this configuration, vibration from the underframe to the floor plate is reduced.

[0003]

As the speed of a railway vehicle increases, the vibration input to the floorboard also increases. Conventionally, due to the above configuration, the weight and cost of the underframe have been increased in order to achieve desired low vibration and low noise.

An object of the present invention is to provide an inexpensive floor structure of a railway vehicle structure that reduces in-vehicle noise.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a railway vehicle constructed by combining and combining an underframe, a side structure, a roof structure, and a wive structure. This is achieved by providing an anti-vibration structure provided with a stopper for fixing an elastic body.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is a perspective view of a railway vehicle structure to which the present invention is applied. FIG. 3 is a sectional perspective view of a railway vehicle structure to which the present invention is applied. FIG. 1 is a detailed view of a portion A in FIG.

[0007] As shown in FIGS. 2 and 3, the railway vehicle structure 1 includes an underframe 2, a side structure 3, a roof structure 4, and a wife structure 5. As shown in FIG. 3, the floor 6 is composed of a light-alloy outer floor plate 7 and a light-alloy inner floor plate 8, and the outer floor plate 7 has a joist 9 for supporting the inner floor plate 8. Are disposed over the longitudinal direction of the vehicle body. The outer floor plate 7 made of a light alloy is made of an extruded aluminum material and is a strength member that can withstand end compression load and pressure load. On the other hand, the vehicle interior floor plate 8 is a member mainly responsible for vertical loads such as a seat load and a passenger load in the room, and is a bonded honeycomb panel made of aluminum. The joist 9 is an extruded member or a separate bone member formed integrally with the vehicle outer floor plate 7.

An elastic member 10 is provided between the joist 9 and the floor plate 8 on the inner side of the vehicle. A screw seat 12 for fastening the elastic body 10 to the vehicle interior floor plate 8 with a screw 11 is adhered.
The elastic body 10 is attached to the joist 9 at a certain interval by being pulled through or having a predetermined length in the longitudinal direction of the vehicle body. The screw seat 12 is a member made of aluminum. The screw seat 12 is passed through the vehicle body in the longitudinal direction, or a screw member having a predetermined length is bonded to the elastic body 10 at a certain interval. The elastic body 10 is joined to the vehicle interior floor plate 8 via the screw seat 12,
1 does not penetrate the elastic body 10. Therefore, the joist 9 and the vehicle inner floor plate 8 are not mechanically joined.

The joist 9 is integrally formed with a stopper 13 for preventing the elastic body 10 from shifting in the lateral direction of the vehicle body.
The joist 9 is an extruded member or a separate bone member.
The stopper 13 improves the strength reliability of the joint of the elastic body 10.

According to such a configuration, the vibration transmitted from the bogie to the vehicle interior via the vehicle exterior floor plate 7 and the joist 9 can be reduced by the elastic body 10. Accordingly, since the sound pressure radiated into the passenger compartment due to the vibration of the vehicle interior floor plate 8 can be reduced, it is possible to reduce the noise inside the railway vehicle. In addition, since the floor 6 on which the elastic body 10 is installed generally has high sound insulation performance, it is possible to reduce transmitted sound entering from outside the underfloor vehicle traveling in the tunnel, thereby reducing noise inside the railway vehicle. Can be planned.

[0011]

As described above, according to the present invention,
It is possible to provide an inexpensive railroad vehicle structure capable of reducing noise inside the vehicle.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of one embodiment of the present invention.

FIG. 2 is a perspective view showing one embodiment of a railway vehicle structure according to the present invention.

FIG. 3 is a sectional perspective view of the railway vehicle structure of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Railroad vehicle structure, 2 ... Underframe, 3 ... Side structure, 4 ... Roof structure, 5 ... Wife structure, 6 ... Floor, 7 ... Outside floor plate, 8 ... Inside floor plate, 9 ... Joist, 10 ... Elastic body , 11 ... screw, 12 ... screw seat, 13 ... stopper.

Claims (1)

[Claims] 1. A stopper for fixing an elastic body for vibration isolation to a joist supporting a floor of the underframe in a railway vehicle constructed by joining and combining an underframe, a side structure, a roof structure, and a wife structure. A floor structure of a railway vehicle structure.