JP2011063175A - Method of cleaning rail head top surface and wheel tread surface by compressed air, and device thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of cleaning a rail head top surface and a wheel tread surface by use of compressed air, and a device thereof, for efficiently cleaning by jetting compressed air onto the rail head top surface and the wheel tread surface during deceleration, in a railroad vehicle running at high speed. <P>SOLUTION: In the method of cleaning the rail head top surface and the wheel tread surface by use of compressed air, the rail head top surface 1A is cleaned by jetting compressed air from a nozzle 15 for the rail head top surface installed on a rail guard 5, and the wheel tread surface 3A is cleaned by jetting compressed air from a nozzle 17 for the wheel tread surface disposed under the floor 2A of the railroad vehicle or on a bogie frame 4, during deceleration of the railroad vehicle 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning method using compressed air on a rail top surface and a wheel tread surface and an apparatus therefor.

  Conventionally, as a method of cleaning the rail top surface and the wheel tread surface with compressed air, a pressure-increasing device that splashes water droplets and the like to prevent idling by blowing compressed air near the rail or wheel during acceleration of a railway vehicle (the following patent document) 1 and 2) have been proposed.

JP 2001-334936 A JP-A-9-323646

However, the conventional method is a method that makes driving force control unnecessary while preventing idling of the wheel by blowing compressed air during acceleration such as power running, and excludes application during deceleration of a brake or the like. There was a problem.
In view of the above situation, the present invention efficiently cleans the rail top surface and the wheel tread by injecting compressed air to the top surface of the rail and the wheel tread when the vehicle is decelerating. It is an object of the present invention to provide a method and apparatus for cleaning the rail top surface and wheel tread surface using compressed air.

In order to achieve the above object, the present invention provides
[1] In the method of cleaning the rail top surface and wheel tread surface with compressed air, the rail head top surface is cleaned by jetting compressed air from the rail top surface nozzle attached to the exhaust device when the railway vehicle decelerates. The wheel tread is cleaned by jetting compressed air from a wheel tread nozzle disposed under the floor of the vehicle or in a bogie frame.

[2] In the cleaning method using the compressed air on the rail top surface and the wheel tread surface described in [1] above, when the railway vehicle decelerates, a brake command, a wiper switch operation in rainy weather, or a trigger by detecting slipping or sliding It is detected by a signal.
[3] In the method of cleaning the rail top surface and the wheel tread surface with compressed air as described in [1] above, the rail head surface nozzle is attached to a rail top surface nozzle mounting member disposed below the obstacle. It is characterized by being able to.

  [4] In a cleaning device using compressed air on the rail head surface and the wheel tread surface, a pressure vessel disposed under the floor of the railway vehicle, a flow rate / pressure adjustment valve of the compressed air connected to the pressure vessel, and the adjustment valve A solenoid valve connected to the solenoid valve, a first air pipe connected to the solenoid valve, a rail head surface nozzle connected to the first air pipe and disposed at a lower portion of the exhaust device, and the electromagnetic A second air pipe connected to the valve, and a nozzle for a wheel tread that is connected to the second air pipe and is disposed under the floor of the railway vehicle or on a bogie frame. The rail top surface and the wheel tread are cleaned by jetting compressed air from the rail top surface nozzle and the wheel tread nozzle.

[5] In the rail head top surface and the wheel tread surface cleaning device using compressed air according to [4] above, the rail head top surface nozzle is attached to a rail head top surface nozzle mounting member disposed below the obstacle. It is characterized by being able to.
[6] In the cleaning apparatus using compressed air on the rail top surface and the wheel tread surface described in [5] above, an opening is formed in a lower portion of the mounting member of the rail top surface nozzle, and the rail top surface is formed in the opening. A nozzle is arranged.

According to the present invention, the following effects can be achieved.
(1) In a railway vehicle running at high speed, the rail top surface and wheel tread can be efficiently cleaned by injecting compressed air onto the rail top surface and wheel tread surface during deceleration.
(2) By jetting compressed air with the exclusion force that can clean water film, dust, fallen leaves, oils and fats, ice and snow, the adhesion performance of rail head and wheel treads, friction characteristics of tread controllers and track short-circuit sensitivity improves. Further, these effects can be obtained without scattering the roadbed ballast.
(3) Since air nozzles that consume less air than general straight pipe nozzles and tapered nozzles are used, the problems associated with noise caused by the injection of compressed air and the increase in the size of on-board pressure vessels can be solved. Mounting on a vehicle is inexpensive and easy, and the running performance of the vehicle is improved.
(4) Since the configuration of the wheel shaft for detecting the wheel speed can be simplified because the idling or sliding of the wheel can be prevented, the problem of controllability such as position detection during automatic train operation is solved, and the stop position Accuracy can be improved.

It is a schematic diagram of the cleaning system by the compressed air of the rail head top surface and wheel tread surface which shows the Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the nozzle for rail head top surfaces with an integrated obstacle device which shows 1st Example of this invention. It is a block diagram of the nozzle for rail head top surfaces with an integrated obstacle device which shows 2nd Example of this invention. It is a figure which shows the example which injected the compressed air on the fixed rail which performed watering of 3 liters per minute. It is a figure which shows the example injected to the rotating rail ring (annular rail) which performed watering of 3 liters per minute.

  The rail head top surface and wheel tread surface cleaning method using compressed air of the present invention cleans the rail head top surface by jetting compressed air from the rail head top surface nozzle attached to the distractor when the railway vehicle is decelerated. The wheel tread is cleaned by jetting compressed air from a wheel tread nozzle disposed under the floor of the railway vehicle or on the bogie frame.

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1 is a schematic view of a cleaning system using compressed air on a rail top surface and a wheel tread surface according to an embodiment of the present invention.
In this figure, 1 is a rail, 1A is the top surface of the rail, 2 is a railcar, 2A is under the floor of the railcar, 3 is a wheel, 3A is a wheel tread, 4 is a carriage frame, 5 is an obstacle, and 11 is pressure. Vessel, 12 is a regulating valve for the flow rate and pressure of compressed air connected to the pressure vessel 11, 13 is a solenoid valve (time element), and trigger signal is brake command, operation of wiper switch indicating rainy weather, idling / sliding Examples include detection. 14 is a first air pipe, 15 is located at the tip of the first air pipe 14, is a nozzle for rail top surface that blows compressed air onto the top surface 1A of the rail 1 to clean the rail top surface 1A, The rail head surface nozzle 15 is attached to the lower end of the obstruction device 5. Reference numeral 16 denotes a second air pipe, and reference numeral 17 denotes a wheel tread nozzle that blows compressed air onto the wheel tread 3 </ b> A disposed at the tip of the second air pipe 16. In this embodiment, the wheel tread nozzle 17 is disposed under the floor 2A of the railway vehicle, but may be disposed in the carriage frame 4.

  When the railway vehicle decelerates (for example, when driving at a high speed exceeding 100 km / h, when the deceleration is 3 to 5 km / h / sec), trigger signals such as brake command, wiper switch operation that operates in the rain, or idling / sliding detection In conjunction with this, the solenoid valve 13 opens. Then, compressed air of a predetermined pressure is supplied from the pressure vessel 11 mounted under the floor 2A of the railway vehicle 2 to the first air pipe 14 and the second air pipe 16 through the regulating valve 12 and the electromagnetic valve 13, and the rail top surface. Compressed air is injected from the nozzle 15 for wheels and the nozzle 17 for wheel treads. At this time, by giving the solenoid valve 13 an elemental function, it is possible to inject for a predetermined time, and to prevent exhaustion of the compressed air in the pressure vessel 11.

2A and 2B are configuration diagrams of the nozzle for the top of the rail integrated with the obstacle device according to the first embodiment of the present invention. FIG. 2A is a front view thereof, FIG. 2B is a side view thereof, FIG. (C) is the bottom view.
In these drawings, reference numeral 21 denotes an obstructor body, 21A denotes a mounting hole for the bogie frame of the distractor body 21, 22 denotes a rail head top surface nozzle mounting member disposed in the lower portion of the obturator body 21, and 22A. Is a lower opening of the mounting member 22, 23 is a first air pipe, and 24 is a rail top surface nozzle disposed at the tip of the first air pipe 23.

  In this way, the rail head-top surface nozzle mounting member 22 can be disposed in the lower portion of the distractor body 21, and the rail head-top surface nozzle 24 can be disposed in a compact manner. In particular, since the rail head top surface nozzle mounting member 22 is formed with an opening 22A on the lower side and the rail head top surface nozzle 24 is disposed in the opening 22A. Without losing the function of removing foreign matter from the outside, the rail head top surface nozzle 24 can prevent damage due to external impact.

3A and 3B are configuration diagrams of a nozzle for a rail top surface integrated with a baffle according to a second embodiment of the present invention. FIG. 3A is a front view thereof, FIG. 3B is a side view thereof, FIG. (C) is the bottom view.
In these drawings, reference numeral 31 denotes an obstacle main body, 31A denotes a mounting hole for the bogie frame of the obstacle main body 31, 32 denotes a rail head top surface nozzle mounting member disposed on the side of the obstacle main body 31, Reference numeral 32 </ b> A denotes an opening in the lower portion of the mounting member 32, 33 denotes a first air pipe, and 34 denotes a rail top surface nozzle disposed at the tip of the first air pipe 33.

  As described above, the rail head-top surface nozzle mounting member 32 can be disposed on the side portion of the distractor main body 31, and the rail head-top surface nozzle 34 can be compactly disposed. In particular, the rail head-top surface nozzle mounting member 32 is formed with an opening 32A in the lower portion, and the rail head-top surface nozzle 34 is disposed in the opening 32A. Without losing the function of removing foreign matter from outside, the rail top nozzle 34 can prevent damage due to external impact.

Then, the example which injected the compressed air to the fixed rail and rotating rail ring (annular rail) after performing watering of 3 liters per minute is shown in FIG.4 and FIG.5, respectively.
FIG. 4 is an example in which compressed air of 300 kPa is injected from a position 100 mm from the top surface of the fixed rail. As is clear from this figure, the normal nozzle has a weak water film exclusion force, and a continuous water droplet mass is formed. ing. In contrast, the nozzle of the present invention has a strong water film exclusion force, and it can be seen that water droplets are scattered finely and radially.

FIG. 5 shows an example in which compressed air of 300 kPa is injected from a position 100 mm from the top surface of the rail ring. As is clear from this figure, the normal nozzle has a weak momentum for removing a water film, but the present invention It can be seen that there is a strong momentum for removing the water film in the nozzle.
In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  The rail head top surface and wheel tread surface cleaning method and apparatus thereof according to the present invention can be used as a rail head top surface and wheel tread surface cleaning tool capable of improving the running performance of a railway vehicle. In addition, for example, the present invention can be applied to a large bus or a large truck equipped with an air compressor and traveling on a highway at a speed of 100 km / h.

DESCRIPTION OF SYMBOLS 1 Rail 1A Top of rail 2 Rail vehicle 2A Under floor of rail vehicle 3 Wheel 3A Wheel tread 4 Bogie frame 5 Exhaust device 11 Pressure vessel 12 Adjustment valve of flow rate and pressure of compressed air 13 Electromagnetic valve (time element)
14, 23, 33 First air piping 15, 24, 34 Rail head nozzle 16 Second air piping 17 Wheel tread nozzle 21, 31 Discharger body 21A, 31A Discharger body to carriage frame Mounting hole 22, 32 Rail head top nozzle mounting member 22A, 32A opening

Claims (6)

  When the railway vehicle decelerates, the rail head top surface is cleaned by jetting compressed air from the rail head top nozzle attached to the jamming device, and compressed from the wheel tread nozzle located under the rail car floor or on the carriage frame. A cleaning method using compressed air for a rail top surface and a wheel tread, wherein the wheel tread is cleaned by air injection.   2. The rail head top surface and wheel tread surface cleaning method according to claim 1, wherein the railcar is decelerated by a brake command, a wiper switch operation in rainy weather, or a trigger signal by slipping detection or sliding detection. A method of cleaning the rail top surface and the wheel tread surface with compressed air.   2. The method of cleaning the rail head surface and the wheel tread surface with compressed air according to claim 1, wherein the rail head surface nozzle is attached to a rail head surface nozzle mounting member disposed at a lower portion of the obstruction device. A method of cleaning the rail top surface and the wheel tread surface with compressed air. (A) a pressure vessel disposed under the floor of the railway vehicle;
(B) a flow rate / pressure regulating valve for compressed air connected to the pressure vessel;
(C) a solenoid valve connected to the regulating valve;
(D) a first air pipe connected to the solenoid valve;
(E) a rail head surface nozzle connected to the first air pipe and disposed at a lower portion of the distractor;
(F) a second air pipe connected to the solenoid valve;
(G) a wheel tread nozzle that is connected to the second air pipe and is arranged under the floor of the railway vehicle or in a bogie frame;
(H) When the railway vehicle is decelerated, the rail top surface and the wheel tread surface are cleaned by jetting compressed air from the rail top surface nozzle and the wheel tread surface nozzle. Cleaning device with compressed air on the tread.   The rail head top surface cleaning device using compressed air on the rail head surface and the wheel tread surface according to claim 4, wherein the rail head top surface nozzle is attached to a rail head top surface nozzle mounting member disposed below the obstruction device. A cleaning device using compressed air on the rail top surface and the wheel tread surface.   6. A cleaning device using compressed air on a rail top surface and a wheel tread surface according to claim 5, wherein an opening is formed in a lower part of a mounting member of the rail top surface nozzle, and the rail top surface nozzle is disposed in the opening. A cleaning device using compressed air on the rail top surface and the wheel tread surface.