JP2000225943A - Floor structure of rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively control vibration transmitted through a floor from a lower part of the floor by arranging an elastic body for damping vibration on a top of a truss, and placing a floor material of a gest room on the elastic body. SOLUTION: A base frame is built up of a hollow extruded structural angle made of light alloy 7 with a rib 7b connecting two face plates to each other and arranged in a truss shape. A floor material 8 is placed through an elastic body 9 on an upper surface of the angle 7. The body 9 is disposed on an upper part at the top of a truss, and on both sides of the top of the truss stoppers 10, 10 are integrally provided with the angle 7. A plurality of the elastic bodies 9 made of rectangular vibration proof rubber are arranged when viewed from the longitudinal direction of a body of rolling stock. Between the bodies 9, 9 a sound shielding member 13 is disposed. With the constitution, solid transmission of vibration to a floor material 8 from an under-floor part through the angle 7 passes through the top of the truss from the rib 7b, but since the elastic body 9 is provided at the crossing point, it can be attenuated effectively, resulting in reduction of vibration and noise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a railway vehicle.

[0002]

2. Description of the Related Art From the viewpoint of low vibration and low noise in a passenger compartment of a railway vehicle, a floor of a passenger compartment is supported on a floor of a vehicle body via a vibration isolating rubber. This is disclosed in Japanese Unexamined Patent Publication No. 9-150738.
And Japanese Patent Application Laid-Open No. 10-152050.

[0003] Japanese Patent Application Laid-Open No. Hei 9-150738 discloses that
The floor of the car body is made of extruded truss-shaped members, and vibration-absorbing rubber is installed on the upper face plate.

In Japanese Patent Application Laid-Open No. Hei 10-152050, a pair of extruded members are used to support a vibration isolating rubber, and a rubber isolating rubber is provided between the stoppers.

[0005]

However, there are few viewpoints of effectively damping vibration transmitted from below the floor through the floor, and effective vibration reduction is not performed.

It is an object of the present invention to enable effective vibration isolation.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide an undercarriage for a railway vehicle which is formed of a hollow extruded shape, and which is formed of a hollow extruded shape.
The rib connecting the two face plates can be achieved by arranging an elastic body for vibration isolation at the apex of the truss and placing the floor material of the passenger cabin on the elastic body in a railway vehicle arranged in a truss shape.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a cross-sectional view of a floor of a railway vehicle to which the present invention is applied in a vehicle width direction.
It is a part enlarged view. FIG. 2 is a full cross-sectional view of the floor of a railway vehicle to which the present invention is applied in the vehicle width direction, and FIG. 4 is a perspective view of the vehicle body of the railway vehicle.

In FIG. 4, a vehicle body 1 of a railway vehicle includes an underframe 2, a side structure 3, a roof structure 4, and a wife structure 5.

In FIG. 1 to FIG. 3, the underframe 2 comprises a hollow extruded member 7 made of light alloy in which ribs 7b connecting between two face plates are arranged in a truss shape. The profile 7 is firmly configured. The floor material 8 of the guest room is placed on the underframe 2. The floor material 8 is a light alloy profile, for example, a honeycomb panel. It is configured. The floor material 8 is placed via the elastic body 9 on the upper surface of the extruded member 7.

The elastic body 9 is located above the top of the truss. Stoppers 10 and 10 are integrally provided on both sides of the top of the truss with extruded profiles 7. The elastic body 9 is a rectangular vibration-proof rubber. The elastic body is arranged between the pair of stoppers 10 and 10 and is fixed with an adhesive. There are a plurality of elastic bodies 9 as viewed from the longitudinal direction of the vehicle body (along the width direction of the vehicle body). A sound insulating material 13 having a heat insulating effect is arranged between the elastic bodies 9.

The flooring 8 rests on the elastic bodies 9.
The floor material 8 is fixed to the elastic body 9 by screws 11 from above. A seat 12 having a screw hole is fixed to the upper surface of the elastic body 9 with an adhesive.

The vibration-proof elastic body 9 is disposed on the floor where vibration is large.

According to this configuration, the vibration and noise that propagate from under the floor to the floor 8 via the profile 7 can be reduced by the elastic body 9 and the sound insulating material 13.

In this case, the solid propagation of the vibration propagating from under the floor to the floor 8 via the profile 7 passes from the rib 7b to the top of the truss. Since the elastic body 9 is arranged at this intersection, vibration can be effectively reduced.

Accordingly, since the sound pressure radiated into the passenger compartment due to the vibration of the flooring material 8 can be reduced, it is possible to reduce the noise inside the railway vehicle.

[0017]

As described above, according to the present invention,
It is possible to provide a floor structure of a railway vehicle capable of reducing noise in the vehicle.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a floor in a vehicle width direction according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a floor portion in a vehicle width direction according to an embodiment of the present invention.

FIG. 3 is a perspective view of a vehicle body of a railway vehicle.

[Explanation of symbols]

1: railcar body, 2: underframe, 3: side structure, 4: roof structure, 5: wife structure, 7: profile, 7b: rib, 8: floor material,
9: Elastic body, 10: Stopper, 11: Screw, 12: Screw seat, 13: Sound insulation material.

Claims (1)

[Claims] An underframe of a railway vehicle is formed of a hollow extruded profile, and a rib connecting two face plates of the profile is disposed in a truss shape. A floor structure of a railway vehicle, wherein an elastic body for vibration is arranged, and floor material of a passenger compartment is placed on the elastic body.