JP2013024015A - Nozzle for foreign matter removal device in track branch section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle for foreign matter removal device in a track branch section which can significantly reduce the noise occurred while sufficiently securing foreign matter removal performance.SOLUTION: In a nozzle 100 for foreign matter removal device in a track branch section which is installed in the foreign matter removal device in the track branch section for removing the foreign matter falling on the space between a stock rail and a tongue rail of the track branch section, compressed-air PA supplied from piping 180 is injected from a nozzle 110. A slit is formed in the nozzle 110 and an inclined part is formed at the tip of the nozzle 110 and the inclined part is opposed to the tongue rail side.

Description

  The present invention relates to a foreign matter removing device nozzle for a track branching portion that removes foreign matter in the vicinity of a railroad track branching portion by air injection. In particular, the present invention relates to a foreign matter removing device nozzle at a track branching portion that removes foreign matter in the vicinity of the Tongrel by air injection.

  Conventionally, when the vehicle passes through the track branch, falling snow ice that is dropped by the vibration, or stepping stones that are generated by the ballast jumping when the falling snow ice falls on the ballast, There was a problem that it could get caught between the rails and the Tongrel inversion occurred. For this reason, various foreign matter removing devices for orbital branching portions have been developed or studied.

  For example, Patent Document 1 discloses a foreign matter removing device for a track branching portion that removes foreign matter between a basic rail and a tongrel so that the branching device cannot be converted by falling snow ice or flying stone.

  A foreign matter removing device for a track branching portion described in Patent Document 1 is a foreign matter removing device for a track branching portion that removes foreign matter dropped between a basic rail and a tongrail of the track branching portion, and is opposed to the tongler of the basic rail. A pipe unit is attached to the side surface in accordance with the length of the branch track, and an air injection nozzle unit having a plurality of injection ports is provided at a plurality of locations at intervals in the longitudinal direction. The ejection direction is set so as to face slightly to the Tongleil side. A pressure air source device is installed in the vicinity of the track bifurcation, and the pressure air source device is connected to the pressure air supply passage so as to supply the pressure air to the piping unit. And the open / close switching means.

  Further, Patent Document 2 discloses a foreign matter removing device for a track branching portion that makes it possible to remove foreign matter between rails of a crossing portion of the track branching portion.

The foreign matter removing device for a track branching portion described in Patent Document 2 is provided for a track branching portion having a basic rail and a tongrail that can be brought into contact with and separated from the basic rail, and jets compressed air. A foreign matter removing device for a track branching portion that removes foreign matter dropped between the rails, and is opposite to the front portion located on the front side where the basic rail and the tongler can be contacted at the track branching portion. The nozzle unit is disposed in the crossing portion that is located on the rear side of the rail and intersects with the rail, and includes a nozzle unit that injects compressed air, and an air source device that supplies the compressed air to the nozzle unit. It is arranged on the front side, and is provided with an injection port formed so as to inject compressed air toward the rear side in the crossing part A.
Both of the foreign matter removing devices for the track branching portion described in Patent Document 1 and Patent Document 2 are very useful for falling snow ice and flying stones.

JP 7-054317 A JP 2010-007423 A

  Patent Document 1 discloses a round-hole injection port as the air injection port 17 of the nozzle portion 3, and Patent Document 2 discloses a large-diameter injection port 22 and a small-diameter injection port 23 in the crossing portion. .

  In the case of using either the air injection port 17 of Patent Document 1 or the small-diameter injection port 23 of Patent Document 2, the noise generated when the compressed air is injected is used when a private house is nearby. There was a problem that it was difficult to install. As a result, although there are many areas or places where installation is desired, installation has not progressed to these places.

  An object of the present invention is to provide a nozzle for a foreign matter removing device at a track branching portion capable of significantly reducing generated noise while sufficiently ensuring the foreign matter removing performance.

(1)
The foreign matter removing device nozzle for the track branching portion according to one aspect is a nozzle provided in the foreign matter removing device for the track branching portion that removes the foreign matter dropped between the basic rail of the track branching portion and the tongrel, and is compressed. A pipe part provided for supplying air and an injection nozzle part for injecting compressed air supplied from the pipe part, the injection nozzle part being provided on the side facing the tongrel and the nozzle tip A columnar housing having an inclined portion that approaches the basic rail side as it goes to, and the inside of the columnar housing is provided in the direction of the central axis for injecting compressed air, at least a part of which opens to the inclined portion And a slit that is not open on the side facing the basic rail, and the central axis of the injection nozzle portion is disposed at a predetermined angle from the direction along the basic rail to the side of the tongue. That.

  In the foreign matter removing device nozzle at the track branching portion, the compressed air supplied from the piping portion penetrates in the central axis direction, at least a part of which opens in the inclined portion, and opens on the side facing the basic rail. It is ejected from the slit that is not. Note that the slit cross-sectional shape may be an ellipse in addition to a rectangle.

The inventors have determined that noise is caused by the air injection port 17 of Patent Document 1 and the small-diameter injection port 23 of Patent Document 2 being simple round holes.
Furthermore, the nozzle has a conical shape, and the compressed air injection port has a slit shape that opens to the side of the cone, so that the injection can be performed while significantly reducing noise compared to a simple round hole for the compressed air injection port. It was experimentally confirmed that a sufficient pressure could be secured. However, if this knowledge is applied as it is to the nozzle for a foreign matter removing device at the track branching portion, the injected compressed air collides with the basic rail, and noise is generated accordingly.

Therefore, by using a slit that penetrates in the central axis direction, at least part of which opens in the inclined part, and does not open on the side facing the basic rail, the slit or part of the opening in the inclined part is The same foreign matter removal effect as that of the slit opened on the conical side surface can be obtained, and the injection pressure can be sufficiently secured while greatly reducing noise.
On the other hand, since the slit is not opened on the side facing the basic rail, the same effect as the slit opened on the conical side surface is not achieved, but the injected compressed air is prevented from colliding with the basic rail. Therefore, the generation of noise due to the collision is suppressed.
Here, the inclined portion may be a flat surface or a curved surface, and the slit may have a cross-sectional shape of a rectangle, an ellipse, or a polygon including a triangle.

(2)
In the foreign matter removing device nozzle at the track branching portion, the inclined portion may be formed by a flat surface from the top surface side to the side peripheral surface of the cylindrical housing.

  In this case, since only the chamfering is performed at the time of processing the injection nozzle portion, it is possible to suppress the generation of noise while significantly reducing the manufacturing cost as compared with the case of performing curved surface processing such as a conical side surface. In other words, although the position and size of the slit opening in the inclined portion is changed by chamfering, the slit itself is cut obliquely because it is the same as the curved surface, while greatly reducing noise, A sufficient injection pressure can be secured.

(3)
In the nozzle for the foreign matter removing device at the track branching part, the piping part is a square pipe-like pipe provided on the side surface of the basic rail on the side of the tongue rail, and is provided on either or both of the upper side and the lower side of the piping part. In addition, the plane of the inclined portion may be disposed within the projected area of the top surface or the bottom surface.

  In this case, it is possible to prevent the interference with the Tongrel while securing the location of the injection nozzle portion.

(4)
In the foreign matter removing device nozzle at the track branching portion, a plurality of slits may be arranged radially around the axis of the columnar housing.

  In this case, the distance between the slits can be made longer than when the slits are arranged in a grid pattern on the top surface of the columnar housing. As a result, the compressed air injected from the slits does not easily interfere with each other, and the air flow is not disturbed, so that noise can be further reduced. In addition, the slit cross-sectional shape may be comprised only by the thing of a rectangle or an ellipse, and these may be combined.

(5)
In the foreign matter removing device nozzle at the orbital branching section, a plurality of spray nozzle sections having the same shape may be provided, and the spray direction of one spray nozzle section may be different from the spray direction of another spray nozzle section. .

  In this case, by changing the injection direction of the injection nozzle part, it is possible to widen the injection region, to reliably remove a wide range of foreign matters, and to make the injection part common. It becomes easy.

It is a typical top view which shows an example of a structure of the track | orbit branch part concerning this Embodiment. It is a schematic diagram which shows an example at the time of seeing the nozzle for foreign material removal apparatuses from the side. It is a schematic diagram at the time of seeing the nozzle for a foreign material removal apparatus from upper direction. It is typical sectional drawing which shows the nozzle for foreign material removal apparatuses attached to the basic rail. It is a front view which shows the detail of a nozzle. It is a side view of a nozzle. It is a schematic diagram for demonstrating the manufacturing method of a nozzle. It is a figure which shows the other example of a some slit. It is a figure which shows the other example of a some slit. It is a figure which shows the other example of a some slit. It is a figure which shows the other example of an inclination part. It is a figure which shows the other example of a nozzle.

  Embodiments according to the present invention will be described below with reference to the drawings. In the present embodiment, a state in which the foreign matter removing device nozzle at the track branching portion is applied to the track for the Shinkansen will be described. Note that the foreign matter removing device nozzle at the track branching section can be used not only for the Shinkansen track but also for other tracks such as conventional lines.

(Configuration of orbit branching part)

  First, FIG. 1 is a schematic plan view showing an example of the configuration of the track branching section 500 according to the present embodiment. As shown in FIG. 1, the track branching unit 500 is divided into regions (point unit P, lead unit L, crossing unit C) divided in the track direction.

  As shown in FIG. 1, the track branching portion mainly includes a pair of basic rails 501, a pair of tongrails 502, a lead rail 503, a wing rail (wing glail) 504, a movable rail 505, a fixed portion 506, and a main rail. 507 is installed.

The point portion P in FIG. 1 is configured as a region including a portion where the basic rail 501 and the tongue rail 502 abut on the front side of the track branching portion 500.
The crossing portion C is configured as a region where the wing rail 504, the movable rail 505, and the fixed portion 506 are arranged on the rear side of the track branching portion 500.

The lead portion L is configured as a region where the lead rail 503 is disposed at a portion connecting the point portion P and the crossing portion C between the point portion P and the crossing portion C.
In the present embodiment, the point part P and the lead part L constitute a front part located on the front side in the track branching part 500, and the crossing part C is located on the rear side opposite to the front part and is a rail. It is comprised as an area | region including the part which cross | intersects.

  As shown in FIG. 1, the pair of basic rails 501 are provided at regular intervals with the wheel width of a railway vehicle traveling on the rails. In addition, a pair of tonglers 502 that can be brought into contact with and separated from the basic rails 501 are arranged so that the vehicle can start to branch from the pair of basic rails 501.

  The basic rail 501 of the track branching section 500 shown in FIG. 1 is disposed on the sleepers via a floor board. In addition, the tongrel 502 is configured to be movable on a sleeper by a bearing floor board or the like. Accordingly, each of the tongrels 502 is provided so as to be able to contact and separate from each basic rail 501.

  In general, the trajectory branching unit moves in a direction in which the tongue rail 502 abuts or separates from the basic rail 501 by the operation of a rolling mill (not shown) based on a command from a control device (not shown). A traveling rail switching operation (point switching operation) in the branching unit 500 is performed. As a result, the railway vehicle is formed so as to be able to travel in either direction of the branch line side or the reference line side.

(Structure of foreign matter removal device)
Next, the configuration of the foreign matter removing apparatus 300 including the foreign matter removing apparatus nozzle 100 according to the first embodiment will be described.
The foreign matter removing device nozzle 100 is provided between the basic rail 501 and the tongrail 502 of the track branching section 500 described above. The foreign matter removing apparatus 300 provided with the foreign matter removing apparatus nozzle 100 according to the present embodiment is configured such that the snow that has fallen between the basic rail 501 and the tongrel 502 by injecting compressed air from the foreign substance removing apparatus nozzle 100. Or remove foreign matter such as stepping stones.

  As shown in FIG. 1, the foreign matter removing device 300 mainly includes an air source device 310, a compressed air tank 320, a foreign matter removing device nozzle 100, an air pipe 330, an electromagnetic switching valve 340, and a nozzle pipe 350.

  The air source device 310 shown in FIG. 1 is a compressed air supply source such as a compressor. The compressed air supplied from the air source device 310 is accumulated in the compressed air tank 320, and the electromagnetic switching valve 340 is opened so that the compressed air is supplied to the foreign substance removing device nozzle 100 via the air pipe 330 and the nozzle pipe 350. Supplied.

  Specifically, the control device (not shown) may be, for example, an operation command signal of various devices such as an operation signal (point switching signal) of a rolling mill, or a snow or foreign object fall detection sensor (not shown) or a snowfall sensor (not shown). A switching command for the electromagnetic switching valve 340 is issued based on detection results of various sensors (not shown). As a result, compressed air is jetted from the foreign matter removing apparatus nozzle 100, and the foreign matter removing operation is performed. Further, in accordance with the point switching signal, the front end portion of the Tongle rail 502 is brought into contact with or separated from the basic rail 501, and the movable rail 505 is brought into contact with or separated from the blade rail 504.

(Nozzle for foreign matter removal equipment)
Next, FIG. 2 is a schematic diagram showing an example when the foreign matter removing apparatus nozzle 100 is viewed from the side, and FIG. 3 is a schematic view when the foreign matter removing apparatus nozzle 100 is viewed from above. These are typical sectional drawings which show the nozzle 100 for foreign material removal apparatuses attached to the basic rail 501. FIG.

  First, as shown in FIGS. 2 and 3, the foreign matter removing apparatus nozzle 100 includes a nozzle 110 and a pipe 180. As shown in FIGS. 2 to 4, the pipe 180 has a rectangular tube shape having a space inside, and supplies the compressed air PA supplied from the nozzle pipe 350 to the nozzle 110. The nozzles 110 are attached to the upper and lower surfaces of the pipe 180 at a predetermined interval.

  As shown in FIG. 2 and FIG. 3, a plurality of nozzles 110 are provided and arranged at the position of the bottom surface corresponding to the position provided on the top surface, but all of the nozzles arranged on the top surface have the same shape, and the bottom surface Those arranged in the same shape are all the same. In addition, the nozzles 110 provided on the upper and lower surfaces of the pipe 180 are alternately tilted toward the Tongrel 502 side by an angle θ1 and an angle θ2 on the upper surface of the pipe 180. Here, the angle θ1 is in the range of 5 degrees or more and 10 degrees or less, preferably 7.5 degrees, and the angle θ2 is in the range of more than 10 degrees and 20 degrees or less, preferably 17. 5 degrees. Details of the nozzle 110 will be described later.

  Further, as shown in FIG. 4, the foreign substance removing device nozzle 100 is attached to the side of the tongue rail 502 of the basic rail 501 by an attachment member 191. The foreign matter removing device nozzle 100 is provided so as not to protrude from the recessed portion of the basic rail 501. That is, when the wheel of a railway vehicle passes above the basic rail 501, the wheel and the foreign object removing device nozzle 100 are provided so as not to contact each other.

  As shown in FIG. 4, in the foreign matter removing apparatus nozzle 100, the compressed air PA from the nozzle pipe 350 flows in the direction of the arrow and is supplied to the nozzle 110 via the pipe 180.

(Nozzle structure)
FIG. 5 is a front view showing details of the nozzle 110, FIG. 6 is a side view of the nozzle 110, and FIG. 7 is a schematic diagram for explaining a manufacturing method of the nozzle 110.

As shown in FIGS. 5 and 6, the nozzle 110 includes a cylindrical body 161 and a holding portion 162.
As shown in FIG. 6, the nozzle 110 is held by the holding portion 162 so that the cylindrical body 161 is in the substantially same direction as the extending direction of the pipe 180, and forms an L shape. Note that the inside of the holding portion 162 is hollow so that the compressed air PA is supplied from the pipe 180.

As shown in FIGS. 5 and 6, the cylindrical body 161 has a top surface 120 and an inclined portion 130. The inclined portion 130 is provided on the side facing the Tongrel 502 and is formed so as to approach the basic rail 501 side (see FIG. 4), and is not provided on the basic rail 501 side.
As shown in FIGS. 5 and 6, the plurality of slits 140 are provided through the inside of the cylindrical body 161 in the central axis direction to the internal space of the holding portion 162, and the plurality of slits 140 are A plurality of slits 140 are arranged on the top surface 120 of the cylindrical body 161 so as to be radial from the center of the virtual circle of the top surface 120. Since the inclined portion 130 is not provided on the basic rail 501 side, the slit 140 provided on the basic rail 501 side opens in the top surface 120. That is, the slit 140 is not opened on the basic rail 501 side. In the present embodiment, the plurality of slits 140 has a rectangular shape.

  Further, as shown in FIG. 7, at the time of manufacturing the nozzle 110, a cylindrical body 161 having the inclined portion 130 is formed by forming a cylindrical body having no inclined portion 130 and cutting the member 163 at an angle θ2 or more. Can be obtained.

(Other examples)
As shown in FIG. 8, the cross-sectional shape of the slit 140 may be an elliptical slit 140a, or a trapezoidal slit 140b as shown in FIG. Furthermore, the slit which consists of a triangle and other polygons may be sufficient.
Further, as shown in FIG. 10, the plurality of slits 140 may be arranged in a staggered arrangement or a plurality of slits 140c arranged in a lattice pattern.

Further, as shown in FIG. 11, the inclined portion 130 may be an inclined portion 130d having a curved surface such as a conical side surface instead of a planar shape.
Furthermore, the nozzle 110e may be provided on the side surface of the pipe 180 as shown in the foreign matter removing apparatus nozzle 100e in FIG. In this case, as a result of preventing the compressed air injected from the nozzle 110e from colliding with the pipe 180, generation of noise due to the collision is suppressed.

As described above, in the foreign matter removing apparatus nozzle 100, the inclined portion 130 is provided on the side facing the Tongrel 502 side, and some of the plurality of slits 140 are open to the inclined portion 130. The generated noise can be greatly reduced while ensuring the necessary pressure at the time of compressed air injection.
Specifically, the noise value can be halved as compared with the case where the inclined portion is not provided and the injection port is formed of a simple round hole. In addition, since the output of compressed air is a fall of about 10% to 20%, there is no problem in practical use and there is almost no influence on the foreign matter removal performance.

  Further, as shown in FIGS. 5 and 6, by disposing the plurality of slits 140 radially, the distance between the slits can be increased. As a result, the compressed air injected from the slits 140 is less likely to interfere with each other, and the air flow is not disturbed, so that noise can be further reduced.

  In addition, since the nozzle 110 of the foreign matter removing apparatus nozzle 100 is made common by simply changing the angles (θ1, θ2), it is easy to manage parts in manufacturing.

  In the present invention, the basic rail 501 corresponds to the basic rail, the tongrel 502 corresponds to the tongrel, the foreign matter removing device nozzles 100 and 100e correspond to the foreign matter removing device nozzles at the track branching portion, and the compressed air PA Is equivalent to compressed air, the pipe 180 is equivalent to the pipe part, the nozzle 110, the nozzle 110a, the nozzle 110b, the nozzle 110c, the nozzle 110d, and the nozzle 110e are equivalent to the injection nozzle part, and the inclined part 130 is the inclined part or plane. The cylindrical body 161 corresponds to a columnar housing, the slits 140, 140a, 140b, 140c correspond to slits, the angles θ1, θ2 correspond to predetermined angles and injection directions, and the cylindrical body 161 It corresponds to a cylindrical housing, the top surface 120 corresponds to the top surface, the slits 140a and 140b correspond to a rectangular shape and an elliptical shape, The arrangement state of 140 corresponds to a state in which a plurality of arrangement states are arranged radially around the axis.

  A preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

100, 100e Nozzle 110 for foreign matter removing device 110, nozzle 110a, nozzle 110b, nozzle 110c, nozzle 110d, nozzle 110e nozzle 120 top surface 130, 130d inclined portion 140, 140a, 140b, 140c slit 161 cylindrical housing 180 pipe 501 basic rail 502 Tongue Rail PA Compressed air θ1, θ2 Angle

Claims (5)

A nozzle provided in the foreign matter removing device for the track branching section that removes the foreign matter dropped between the basic rail of the track branching section and the tongrel,
A piping section provided for supplying compressed air;
An injection nozzle part for injecting compressed air supplied from the pipe part,
The spray nozzle part is
A columnar housing that is provided on the side facing the tongrel and has an inclined portion that approaches the basic rail side as it goes to the nozzle tip;
In order to inject the compressed air, the columnar housing is provided so as to penetrate the central axis in the direction of the central axis, at least a part of which opens to the inclined portion and opens to the side facing the basic rail. And not a slit,
A nozzle for a foreign matter removing device at a track branching portion, wherein a central axis of the spray nozzle portion is disposed at a predetermined angle from a direction along the basic rail toward the Tongler side.   2. The nozzle for a foreign matter removing apparatus for a track branching portion according to claim 1, wherein the inclined portion is formed by a plane extending from the top surface side to the side circumferential surface of the columnar housing. The pipe part is a square pipe-like pipe provided on the side surface of the basic rail on the side of the Tongle rail.
The spray nozzle part is provided on either one or both of the upper side or the lower side of the pipe part,
3. The nozzle for a foreign matter removing apparatus for a track branching portion according to claim 2, wherein the plane of the inclined portion is provided within a projected area of the upper surface or the bottom surface of the piping portion.   4. The foreign matter removing device nozzle for a trajectory branching portion according to claim 1, wherein a plurality of the slits are arranged radially around the axis of the columnar casing. 5. The injection nozzle part is provided with a plurality of the same shape,
The nozzle for a foreign matter removing apparatus for a track branching portion according to any one of claims 1 to 4, wherein an injection direction of one of the injection nozzle portions is different from an injection direction of the other injection nozzle portion. .