JP2008156878A - Track friction reducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a track friction reducing device, reducing friction between a wheel and a rail without contaminating soil in simple constitution. <P>SOLUTION: A sprinkler means 6 including a water supply pipe 7 fixed along a derailment preventing guard 1 and an injection nozzle 8 disposed at a space from the water supply pipe 7 in the longitudinal direction to penetrate a vertical support part 2B of an angle material 2 of the derailment preventing guard 1 is provided inside the derailment preventing guard 1, whereby water injected from the injection nozzle 8 of the sprinkler means 6 is sprayed to a rail R in a curve section to thereby reduce the friction between the wheel and the rail R in the curve section. That is, by the simple structure including the water supply pipe 7 fixed along the derailment preventing guard 1 and the injection nozzle 8 provided at a space from the water supply pipe 7, the friction between the wheel and the rail R in the curve section can be reduced, and as compared with the conventional friction reducing device, the structure can be remarkably simplified. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a track friction reducing device that can reduce friction between a wheel in a curve section and a rail on a rail on which a train travels.

  When the train runs on the rail curve section, friction is generated between the wheel and the rail due to the difference in the peripheral speed between the inner wheel and the outer wheel, and this friction generates squeak noise, excessive lateral pressure, flange wear, rail Numerous problems such as wear occur. In order to reduce the friction between the wheel and the rail, various measures such as spraying water, oil coating, solid lubricant, etc. are taken between them ("Non-Patent Document 1", See "Non-Patent Document 2").

Specifically, a friction adjustment material injection device (FMC), a friction adjustment material supply device (FMS), and an injection nozzle that are loaded on a vehicle and injecting the friction adjustment material onto the rail ( “Refer to“ Non-patent Document 3 ”) A tab is provided on the outside of the rail, and an Aladdin type oiling device that applies grease from the tank to the rail surface by the pressure of the wheel stepping on the rail. A conventional fueling device that injects from a device, a device that comprises a box part (consisting of a tank and a control part) and an application bar and applies a friction modifier called Keltrack (all refer to “Non-Patent Document 4”), Such friction reduction measures are known.
"Railway Vehicles and Technology No. 71" (with) Rail and Tech Publishing, published on January 20, 2002, "Practical use of friction control between wheels and rails for vehicle motion control (Part 1-Concept and effect) Item, pages 2-6 "Railway Vehicle and Technology No.72" (published) Rail and Tech Publishing, issued April 20, 2002, "Practical use of friction control between wheels and rails for vehicle motion control (Part 2-Concept and effect) "Page 30-34" "Railway Vehicle and Technology No.75" (published) Rail and Tech Publishing, published on July 20, 2002, "Practical use of friction control between wheels and rails for vehicle motion control (Part 3-Concept and effect) "Page 32-37" "Railway Vehicle and Technology No.79" (R) Rail and Tech Publishing, published on November 20, 2002, "Countermeasures against squeak noise by friction modifier", pages 32-40

  By the way, as for the means to reduce the friction of the wheel and rail shown by the said nonpatent literatures 1-4, all have a problem that an apparatus is large and control is complicated. In addition, lubricants such as oil and grease used as the friction adjusting material described above may contaminate the soil, and cannot be said to be the best friction adjusting material.

  SUMMARY OF THE INVENTION The present invention is intended to solve the conventional problems, and it is possible to effectively reduce the friction between the wheel and the rail without contaminating the soil and with a simple configuration. An object is to provide a reduction device.

  And in order to achieve the said objective, in the problem-solving means of this invention, the derailment prevention guard which has the angle material which is arrange | positioned inside and adjacent to the rail located in a curve section, and prevents derailment, and this derailment prevention guard An orbital friction reducing device comprising a watering means provided, wherein the watering means is fixed to the inner side of the derailment prevention guard along the derailment prevention guard, and the length of the water supply pipe is long. The spray nozzle is arranged at intervals in the vertical direction and is disposed so as to penetrate the vertical support portion of the angle member, and sprays water toward a rail in the vicinity.

  In the problem-solving means of the present invention, the spray nozzle is housed in the derailment prevention guard on the main body side, and the spray port at the tip thereof is positioned below the upper track surface of the rail located in the vicinity. Water is sprayed toward the upper raceway surface of the rail.

  In the problem solving means of the present invention, the water supply pipe is disposed in an insulated state with respect to the derailment prevention guard.

  According to the orbital friction reducing device configured as described above, the water supply pipe fixed along the derailment prevention guard on the inner side of the derailment prevention guard, and the derailment prevention guard spaced from the water supply pipe Water spraying means comprising spray nozzles arranged so as to pass through the vertical support portion of the angle member of the angle material, water sprayed from the spray nozzles of the water spray means is sprayed on the rail of the curve section, thereby The friction between the wheel and the rail in the section can be reduced, and generation of squeak noise, excessive lateral pressure, flange wear, rail wear, and the like can be prevented. And in the track friction reducing device of the present invention, the wheel and rail in the curve section can be obtained by a simple configuration of a water supply pipe fixed along the derailment prevention guard and an injection nozzle provided at an interval to the water supply pipe. The friction can be reduced, and the structure can be greatly simplified as compared with the conventional friction reducing device. Further, since the friction between the wheel and the rail is reduced by water, there is no fear of soiling the soil by the friction adjusting material as in the conventional friction reducing device.

  Further, according to the track friction reducing device, the spray nozzle is housed on the main body side in the derailment prevention guard, and the spray port at the tip is positioned below the upper track surface of the rail located nearby. Since the water was sprayed from the spray nozzle toward the upper raceway surface of the rail, the water sprayed from the spray nozzle can be sprayed on the rail so as to form an arcuate radial shape. It becomes possible to efficiently spray water over a wide range from one injection nozzle.

  In addition, according to the track friction reducing device, since the water supply pipe is arranged in an insulated state with respect to the derailment prevention guard, the track is not brought into conduction through the water supply pipe. The presence of the rail makes the rail conductive, and detecting this conduction prevents the track circuit that confirms the train position on the track from being adversely affected. That is, even if the watering means having the above-described configuration is arranged, an effect that the track circuit for detecting the train position can function normally can be obtained.

  Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a curve section of a rail R in which a track friction reducing device 100 of the present invention is installed. A derailment prevention guard 1 for preventing derailment is provided on an inner rail R1 of the rail R.

  As shown in FIGS. 2 and 3, the derailment prevention guard 1 includes an L-shaped angle member 2 provided along the rail R in the vicinity of the inner rail R1 of the rail R, and the angle member 2 as a rail R. It is comprised from the attachment member 3 fixed to. The angle member 2 includes a horizontal portion 2A and a vertical support portion 2B, and the vertical support portion 2B is fastened and fixed to the base portion Ra of the rail R by an attachment member 3. The attachment member 3 is arranged at a predetermined interval in the length direction with respect to the rail R, and the angle member 2 is fastened and fixed to various portions of the rail R by fastening means 4 including bolts and nuts. In addition, what is shown with the code | symbol 5 in FIG. 2 is the rail fastening bracket for fixing the rail R with respect to the sleeper M. In FIG.

  As shown in FIG. 2, the derailment prevention guard 1 is provided with watering means 6 for watering the inner rail R <b> 1 of the rail R. As shown in FIG. 3, the water spray means 6 includes a water supply pipe 7 fixed along the length direction of the derailment prevention guard 1 on the inner side of the derailment prevention guard 1, and the length of the water supply pipe 7. And an injection nozzle 8 provided at intervals in the direction. The water supply pipe 7 is made of, for example, a plastic pipe such as vinyl chloride, and is fixed to the inside of the corner of the L-shaped angle member 2 of the derailment prevention guard 1 by a fixing means (not shown). Further, a through hole 2b is formed in the vertical support portion 2B of the angle member 2, and the injection nozzle 8 allows the water in the water supply pipe 7 to pass through the nozzle pipe 9 passing through the through hole 2b. Water is sprayed toward the inner gauge R1. The injection nozzle 8 stores the main body side in the derailment prevention guard 1 and has an injection port 8A at the tip thereof below the upper raceway surface (indicated by reference numeral Rb) of the rail R located in the vicinity. The water of the water supply pipe 7 is adjusted so as to have a radial shape that draws an arc toward the upper raceway surface Rb of the rail R.

The watering means 6 uses a water supply pipe 7 made of a plastic pipe such as vinyl chloride. This is to prevent the rail R from being always in a conductive state through the water supply pipe 7. That is, the inner track R1 and the outer track R2 of the rail R are insulated from each other, and the rail R is also insulated for each section, and the rail R is conducted by the train only when the train exists in the section. It becomes a state. And since the train position on the track is confirmed by detecting this continuity by the track circuit, even if the water supply pipe 7 as described above is used, the track circuit is not affected. In addition, the track circuit for detecting the train position can function normally. In this embodiment, the water supply pipe 7 made of a plastic pipe is used. However, the present invention is not limited to this, and when a metal water supply pipe 7 is used, as shown by reference numeral 10 in FIG. The rail R may be in a non-conductive state by providing a fixing means formed of an insulator such as plastic on the angle member 2 of the prevention guard 1 and supporting the metal water supply pipe 7 on the fixing means 10.
Further, an electromagnetic valve (not shown) is attached to the water supply pipe 7, and the electromagnetic valve is opened / closed by a signal from a sensor for detecting the traveling position of the vehicle, and only when the vehicle approaches within a predetermined distance and passes therethrough, Water supply by means 6 may be performed.

  According to the orbital friction reduction device 100 configured as described above, the water supply pipe 7 fixed along the derailment prevention guard 1 on the inner side of the derailment prevention guard 1 and the water supply pipe 7 are spaced from each other. In addition, the water spraying means 6 comprising the spray nozzle 8 arranged so as to penetrate the vertical support portion 2B of the angle member 2 of the derailment prevention guard 1 is provided. Water is sprayed on the inner rail R1 of the rail R in the curve section, thereby reducing the friction between the wheels in the curve section and the inner rail R1 of the rail R, thereby generating a squeak noise. Lateral pressure, flange wear, rail R wear, and the like can be prevented. In this orbital friction reduction device 100, the wheel in the curve section has a simple configuration of the water supply pipe 7 fixed along the derailment prevention guard 1 and the injection nozzle 8 provided at an interval to the water supply pipe 7. And the inner rail R1 of the rail R can be reduced, and a significant simplification of the structure can be realized as compared with the conventional friction reducing device. Further, since the friction between the wheel and the rail R is reduced by water, there is no possibility that the soil is contaminated by the friction adjusting material unlike the conventional friction reducing device.

  Further, in the track friction reducing device 100 described above, the injection port of the injection nozzle 8 is positioned below the upper raceway surface Rb of the rail R located in the vicinity, and the jet is directed toward the upper raceway surface Rb of the rail R. Since water is sprayed from the nozzle 8, the water sprayed from the spray nozzle 8 can be sprinkled on the rail R so as to form a radial shape that draws an arc. Water can be sprinkled.

  In the track friction reducing device 100 described above, since the water supply pipe 7 is arranged in an insulated state with respect to the derailment prevention guard 1, the line is not brought into conduction through the water supply pipe 7. The track circuit for detecting the train position is made to function normally without affecting the track circuit for confirming the train position on the track by detecting the continuity due to the presence of the train. The effect that it can be performed is produced.

  In the above-described track friction reducing device 100, the water sprinkling means 6 is installed on the derailment prevention guard 1 provided on the inner side of the inner rail R1 of the rail R, but the derailment prevention guard provided on the inner side of the outer rail R2 of the rail R1. The watering means 6 may be installed, and is appropriately selected according to the situation of the route.

The figure which shows the positional relationship of the derailment prevention guard 1 and the water supply pipe 7 which are arrange | positioned at the inner track R1 of the rail R. The perspective view which shows the watering means 6 attached to the derailment prevention guard 1. FIG. Sectional drawing which shows the specific structure of the water sprinkling means 6. FIG. Sectional drawing which shows other embodiment of the watering means.

Explanation of symbols

R rail R1 inner track R2 outer track 1 derailment prevention guard 2 angle material 6 sprinkling means 7 water supply pipe 8 spray nozzle 100 track friction reducing device

Claims (3)

A track friction reduction device comprising a derailment prevention guard having an angle member that is disposed inside and close to a rail located in a curve section and prevents derailment, and watering means provided in the derailment prevention guard,
The water sprinkling means includes a water supply pipe fixed along the derailment prevention guard on the inner side of the derailment prevention guard, and the water supply pipe is disposed at intervals in the length direction of the water supply pipe and is perpendicular to the angle member. An orbital friction reducing device comprising: an injection nozzle that is disposed so as to penetrate the support portion and sprays water toward a nearby rail.   The main body side of the spray nozzle is housed in the derailment prevention guard, and the spray port at the tip of the spray nozzle is positioned below the upper track surface of the rail located in the vicinity, and water sprays toward the upper track surface of the rail. The track friction reducing device according to claim 1, wherein:   The track friction reducing device according to claim 1, wherein the water supply pipe is disposed in an insulated state with respect to the derailment prevention guard.

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