JPH0717402A - Preventive device of rail from generating creaking sound - Google Patents

Abstract

PURPOSE:To provide a preventive device of rail from generating creaking sound, by which the maximum sound-reducing effect can be obtained by a quantity of water sprinkled as little as possible and an influence on the ballast can be reduced. CONSTITUTION:A water supply pipe 2 and a sprinkled pipe 3 are laid down along rails 1 through a guard holder 5. A plurality of sprinkling nozzles 4 are arranged at every appropriate distance in the sprinkling pipe 3. Number 6 and 7, 8 represent a bracket and fitting U-shaped bolts respectively. Each sprinkling nozzle 4 is provided with a notch and a nozzle hole and the notch is provided with the upper slanting face for spraying atomized water on the rail 1. Number 17 represents a communication cable which transmits the passing signal of a vehicle from a vehicle approach detector set at the side of upstream rail 1 in the sprinkling area to the supply part of sprinkling nozzles 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail squeaking noise preventing device for preventing squeaking noise between a metal of a rail and a wheel when a railway vehicle passes through.

[0002]

2. Description of the Related Art Generally, when a vehicle passes through a curved rail, an unpleasant metallic squeaking noise is generated between the rail and the wheels, which is especially a noise pollution to the inhabitants of the surrounding area. This squeaking noise is due to the wheels slipping on the rails at the curve. Conventionally, as one of the methods for preventing the generation of the squeaking noise between the rail and the wheel, there has been the idea of watering the rail.

However, the method of sprinkling water on the rails has problems that a large amount of water is sprinkled and the water is wasted, and that excess permeated water may adversely affect the roadbed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. The object of the present invention is to obtain the maximum sound reduction effect with a minimum amount of water spray. , To provide a device for preventing rail squeaking noise with less influence on the track.

[0005]

A rail squeaking noise preventing apparatus according to the present invention is provided with a plurality of water spray nozzles at appropriate positions of a water spray pipe provided along a side portion of a rail, and water is stored in a water spray tank in the water spray pipe. The water is sent under pressure to spray water from the spray nozzle onto the rail. The sprinkling nozzle is composed of a cut portion having an upper inclined surface and a nozzle hole in which a base of the cut portion faces the jet outlet. Another feature is that a vehicle approach detection device is arranged on the rail side portion on the upstream side of the watering area to detect the approach of the vehicle and perform the watering only when the vehicle passes.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a rail, which has a curved section 1a and a straight section 1b. A water supply pipe 2 and a water sprinkling pipe 3 are provided inside the rail 1 of the curved section 1a. The water supply pipe 2 and the water sprinkling pipe 3 may be provided outside or on both sides of the rail 1. A plurality of water spray nozzles 4 are arranged at appropriate intervals (for example, 1,
They are arranged at a pitch of 350 mm).

2 and 3 show a specific example of mounting the water spray nozzle 4 and the like. In this figure, 5 is a guard holder, which is appropriately spaced (for example, 1,000).
It is attached to the rail 1 with a pitch of mm. The water supply pipe 2 and the water spray pipe 3 are attached to the guard holder 5 by U bolts 7 and 8 via a mounting bracket 6, respectively.

The water spray nozzle 3 is attached to the water spray pipe 3 via a cheese 9 and a bushing 10. The water spray nozzle 4 has a cut portion 4a and a nozzle hole 4b, as shown in an enlarged manner in FIG. An upper inclined surface 4a 'is formed in the cut portion 4a. The upper inclined surface 4
The inclination angle θ of a ′ affects the watering direction and distance. The nozzle hole 4b has a hole diameter of 1 mmφ, for example, and faces the center base of the cut portion 4a.

FIG. 5 shows a watering tank 11 and a watering pump 12. The sprinkling tank 11 stores a predetermined amount of natural water such as tap water or rainwater, and keeps the stored water amount constant by a water level detector 13 such as a float provided inside. The water sprinkling pump 12 pumps the water in the water sprinkling tank 11 to the water pipe 2 and the water pipe 3. 14 is a power supply / control panel.

FIG. 6 shows a vehicle approach detection device 15, in which a fixture 1 is provided on the side of the rail 1 upstream of the sprinkling area.
It is attached via 6. The vehicle approach detection device 15 of this embodiment emits a high frequency wave upward and receives a reflected wave from a wheel (not shown) traveling on the rail 1 to confirm the passage of the vehicle. The detection signal is transmitted to the power supply / control panel 14 through the communication cable 17 to operate the water spray pump 12.

Next, the silencing action of the apparatus of the above embodiment will be described. When the vehicle approaches the curved section 1a of the rail 1 that requires watering, the vehicle approach detection device 15 installed in advance in the straight section 1b detects the approach of the vehicle and the communication cable 17 (see FIG. 2) is used. Power supply·
A detection signal is input to the control panel 14.

When the approach information of the vehicle is input to the power supply / control panel 14, the sprinkling pump 12 is operated and the sprinkling tank 11 is operated.
The water inside is pressure-fed to the water supply pipe 2 and the water sprinkling pipe 3. Sprinkler pipe 3
The pressure water from is collided from the nozzle hole 4b of the water spray nozzle 4 to the upper inclined surface 4a 'of the cut portion 4a, and is sprayed in a mist state.

When the vehicle passes, the water spray pump 12 automatically stops, and the water spray from the water spray nozzle 4 stops.
In the present embodiment, the approach of the vehicle is detected in the straight section 1b, but the present invention is not limited to this. In short, the vehicle approach detection device 15 is installed at an appropriate position in the vehicle advancing upstream section of the section where watering is scheduled. I wish I had it.

[0014]

【The invention's effect】

1) Since water is sprayed in the form of mist, it is possible to effectively prevent the squeaking noise of the rail with a small amount of water and protect the surrounding living environment. 2) Water is conserved because water is sprinkled only when the approach of a vehicle is detected and the vehicle passes. 3) No excess water is supplied to the bed, so there is no risk of adversely affecting the bed. 4) It also helps prevent dust pollution due to iron powder when passing vehicles and improves the durability of rails and wheels.

[Brief description of drawings]

1 is a layout of the device of the present invention.

FIG. 2 is an explanatory view of attachment of a water spray nozzle and the like.

FIG. 3 is an explanatory view of attachment of a water spray nozzle and the like.

FIG. 4 is a structural explanatory view of a water spray nozzle.

FIG. 5 is an explanatory diagram of a sprinkler tank and the like.

FIG. 6 is an explanatory view of mounting the vehicle approach detection device.

[Explanation of symbols]

 1 rail 1a curved section 1b straight section 2 water supply pipe 3 water sprinkling pipe 4 water sprinkling nozzle 4a notch 4a 'upper slope 4b nozzle hole 5 guard holder 6 mounting bracket 7 U bolt 8 U bolt 9 cheese 10 bushing 11 water sprinkling tank 12 water sprinkling pump 13 Water level detector 14 Power supply / control panel 15 Vehicle approach detection device 16 Fixture 17 Communication cable

Claims (3)

[Claims] 1. A plurality of water sprinkling nozzles are attached to appropriate positions of a water sprinkling pipe along a side portion of a rail, the water stored in a water sprinkling tank is pumped into the water sprinkling pipe, and water is sprayed onto the rail from the water sprinkling nozzle. A device for preventing the generation of rail squeaking noise, which is characterized by spraying water in a mist state. 2. The rail squeezer according to claim 1, wherein the water spray nozzle is composed of a notched portion having an upper inclined surface and a nozzle hole having a base of the notched portion facing the jet outlet. Sound prevention device. 3. The vehicle approach detection device is arranged on the rail side portion on the upstream side of the watering area to detect the approaching of the vehicle and perform the watering only when the vehicle passes. The device for preventing the squealing noise of the rail according to the item 2 or above.