JP5844082B2 - Nozzle for foreign matter removal device at track branch - Google Patents

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. The present invention also relates to a foreign matter removing device nozzle at a track branching portion, particularly in a crossing portion.
Conventionally, falling snow ice that is dropped by vibration when the vehicle passes the track branching part, or stepping stones that are generated by ballast jumping when falling snow ice falls on the ballast, etc. There was a problem that the Tongleil 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

  As shown in FIG. 4, the nozzle portion of the foreign matter removing apparatus described in Patent Document 2 has a large number of small-diameter injection ports and three large-diameter injection ports. Due to the noise generated when compressed air is ejected from the large number of small-diameter injection ports, there is a problem that it is difficult to install when a private house is nearby. 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 provided for the track branching portion of the rail, and removes the foreign matter dropped between the rails by injecting compressed air. A nozzle provided in the removing device, which is provided in a frustum-shaped injection housing part arranged on the front side of the crossing part where the rail intersects, and capable of injecting compressed air toward the rear side of the crossing part. And one or a plurality of slits formed on the side surface of the ejection housing unit, and a guide unit that guides the compressed air to the one or more slits through the compressed air introduction port of the ejection housing unit. It is a waste.

The inventors have found that the air injection port 17 of Patent Document 1 and the small-diameter injection port 23 of Patent Document 2 are simple round holes that cause noise.
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. And based on this knowledge, it was decided to further improve and to provide a guide part inside the injection housing part. That is, since compressed air can be flowed along a guide part, it can relieve | moderate that compressed air collides with the inner wall of an injection | pouring housing | casing part, and can suppress that the flow of the gas injected from a slit is disturb | confused. . As a result, the noise generated by the injected compressed air can be greatly reduced while maintaining the pressure during the compressed air injection.
The cross-sectional shape of the slit may be a polygon including an ellipse or a triangle in addition to a rectangle.

(2)
In the foreign matter removing device nozzle at the track branching portion, the guide portion may have a conical shape.

  In addition to the conical shape, the guide portion can be a pyramid shape, a simple inclined surface, or an inclined curved surface. However, when a large number of slits are provided, if the conical shape is used, compressed air can flow evenly through the slits along the conical portion as compared with a pyramid shape. It is possible to relieve a sudden collision with the internal wall of the part, and to suppress the disturbance of the flow of gas injected from all the slits formed on the side surface. As a result, the noise generated by the injected compressed air can be greatly reduced.

It is a typical top view which shows an example of a structure of the track | orbit branch part concerning this Embodiment. It is typical sectional drawing which shows an example at the time of seeing a nozzle part from the back side toward the front side with a blade rail. It is a schematic diagram at the time of seeing a nozzle part from upper direction. It is a typical perspective view which shows an example of the nozzle for foreign material removal apparatuses. It is a typical top view which shows an example of the nozzle for foreign material removal apparatuses. It is a typical side view which shows an example of the nozzle for foreign material removal apparatuses. It is a typical top view which shows an example of the nozzle for foreign material removal apparatuses. It is typical sectional drawing which shows an example of the structure of a nozzle. It is a typical sectional view for explaining other examples of a nozzle. It is a typical sectional view for explaining other examples 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 may be used not only in the Shinkansen track but also in 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 portion 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 section 500 mainly includes a pair of basic rails 501, a pair of tongrels 502, a lead rail 503, a wing rail (wing glail) 504, a movable rail 505, a fixed part 506, and a main part. A 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. The tongue rail 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.
Further, the movable rail 505 of the crossing portion C is configured to be displaced in conjunction with the tongler 502 with the operation of the rolling mill (not shown), and is displaced so as to swing as the fulcrum structure. The front end is configured to abut against or separate from the wing rail 504.

  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). At the same time, the movable rail 505 moves and the traveling rail switching operation (point switching operation) in the track branching section 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 nozzle unit 110 for the foreign matter removing apparatus 300 according to the first embodiment will be described. The foreign matter removing device 300 is provided on the blade rail 504 of the crossing portion C of the track branching portion 500 described above.
The foreign matter removing apparatus 300 including the nozzle portion 110 for the foreign matter removing apparatus according to the present embodiment jets the compressed air PA from the nozzle portion 110 or blows the hot air HA. Alternatively, foreign matters such as snow or flying stones falling on the wing rail 504 and the movable rail 505 are blown away toward the rear side of the track branching section 500, or the snow is melted. Since the warm air HA is not related to the present invention, the description thereof will be omitted.

  As shown in FIG. 1, the foreign substance removing device 300 mainly includes an air source device 310, a compressed air tank 320, a nozzle unit 110, 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 PA supplied from the air source device 310 is accumulated in the compressed air tank 320, and the compressed air PA is supplied to the nozzle unit 110 via the air pipe 330 and the nozzle pipe 350 by opening the electromagnetic switching valve 340. Is done.

  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, the compressed air PA is ejected from the nozzle portion 110, and the foreign matter removing operation is performed. Further, in accordance with the point switching signal, the front end portion of the Tongle rail 106 contacts or separates from the basic rail 105, and the movable rail 109 contacts or separates from the blade rail 108.

  In addition to the detection results of the operation command signal and various sensors, the control device (not shown) performs electromagnetic switching in a time zone where a foreign matter removal operation such as a time zone during vehicle operation may be required. A command for switching the valve 340 may be issued, and the compressed air PA may be periodically injected from the nozzle unit 110.

(For foreign matter removal device nozzle piping)
Next, FIG. 2 is a schematic cross-sectional view showing an example when the foreign matter removing device 300 is viewed from the rear side to the front side together with the blade rail 504, and FIG. 3 is a view when the nozzle unit 110 is viewed from above. It is a schematic diagram. As shown in FIG. 2, the nozzle portion 110 is provided between the blade rails 504.

  As shown in FIG. 3, the foreign substance removal apparatus 300 is provided with a nozzle pipe 350 and a hot air pipe 160. The downstream side of the nozzle pipe 350 is connected to the lower part of the nozzle part 110. Further, the upstream side of the hot air pipe 160 is connected to a hot air generator (not shown), and the downstream side is connected to the upper portion of the nozzle unit 110.

  As illustrated in FIG. 3, the flow PAF of compressed air PA is supplied to the nozzle pipe 350, and the flow HAF of hot air HA is supplied to the hot air pipe 160.

(Nozzle for foreign matter removal equipment)
4 is a schematic perspective view showing an example of the nozzle part 110 of the foreign matter removing apparatus 300, FIG. 5 is a schematic plan view showing an example of the nozzle part 110 of the foreign matter removing apparatus 300, and FIG. FIG. 7 is a schematic side view showing an example of the nozzle unit 110 of the removal apparatus 300, and FIG. 7 is a schematic top view showing an example of the nozzle unit 110 of the foreign substance removal apparatus 300.

  As shown in FIGS. 4 to 8, the nozzle unit 110 of the foreign matter removing apparatus 300 includes a hot air nozzle hole 120, a tip nozzle fixing hole 130, a housing 140, an introduction port 141, and a nozzle 200.

  As shown in FIG. 4, a hot air nozzle hole 120 is provided in the upper portion of the housing 140. Hot air HA from the hot air pipe 160 is ejected from the hot air nozzle hole 120. In addition, an inlet 141 is provided at the bottom of the housing 140, and a nozzle 200 is provided on the opposite side of the inlet 141. The nozzle 200 injects compressed air PA introduced from the inlet 141 as will be described later. The nozzle portion 110 is fixed by the tip nozzle fixing hole 130.

(Detailed structure of nozzle)
FIG. 8 is a schematic cross-sectional view showing an example of the structure of the nozzle 200. FIG. 8A shows a cross section of the nozzle 200, and FIG. 8B shows a state viewed from the back surface of the nozzle 200.

  As shown in FIGS. 4 to 8, the nozzle 200 is formed in a truncated cone shape 201 protruding outward from the housing 140, and a plurality of slits 230 are formed on the inclined surface of the truncated cone shape 201. Are provided radially from the central axis. Here, the slit 230 is a rectangular slit, but may be an elliptical shape, a trapezoidal shape, a triangle or other polygons, or a combination thereof. good.

As shown in FIGS. 8A and 8B, a conical shape is formed in the nozzle 200 between the inlet 141 of the compressed air PA and the plurality of slits 230 toward the inlet 141. The guide 210 is provided.
As a result, the compressed air PA smoothly flows in the direction of the flow PAF by the guide 210 and can be ejected from the plurality of slits 230. Therefore, since the compressed air PA can be smoothly flowed without disturbing the flow PAF of the compressed air PA, the noise generated from the nozzle 200 can be greatly reduced. In addition, since the guide 210 has a conical shape compared to other examples of the nozzle structure to be described later, the compressed air PA can flow smoothly toward all the slits 230 toward the direction of PAF. Noise can be reduced most.

(Other examples of nozzle structure)
Like the nozzle part 110a shown in FIG. 9, it is good also as the nozzle 200a which has the guide 210a of the slope comprised from two planes formed toward the inlet 141 side.

  Moreover, it is good also as the nozzle 200b which has the guide 210b of the inclined surface comprised by the two curved surfaces formed toward the inlet 141 side like the nozzle part 110b shown in FIG.

  The nozzles shown above may be combined in part. Further, other examples of the nozzle structure are not limited to the guides 210, 210a, and 210b. In addition to a complete conical shape, for example, only a half cone, quadrature thrust or part thereof, truncated cone or part thereof, pyramid It can also be a table or part thereof.

In the present embodiment, the nozzle portion 110 is provided at one location, but the present invention is not limited to this, and any other arbitrary number may be provided.
In addition, although one nozzle 200 is provided in the nozzle unit 110, the present invention is not limited to this, and any other arbitrary number may be provided.

  As described above, in the nozzle 200 of the foreign matter removing apparatus 300 according to the present embodiment, the compressed air PA can flow along the guide 210, so that the compressed air PA is abruptly applied to the inner wall of the ejection housing portion. It is possible to alleviate the collision and suppress the disturbance of the flow of the compressed air PA ejected from the slit 230. As a result, it is possible to significantly reduce the noise generated by the injected compressed air PA while maintaining the pressure during the injection of the compressed air PA. Noise can also be reduced in other nozzle structure examples as compared to the conventional example.

  In the nozzle 200 of the foreign matter removing apparatus 300 according to the present embodiment, the blade rail 504 corresponds to the rail, the track branch portion 500 corresponds to the track branch portion, the compressed air PA corresponds to the compressed air, and the crossing. The part C corresponds to a crossing part, the truncated cone shape 201 corresponds to a frustum-shaped injection casing part, the slit 230 corresponds to one or a plurality of slits, and the inlet 141 introduces compressed air in the injection casing part The guides 210, 210a, and 210b correspond to the guides, and the nozzle 200 corresponds to the foreign matter removing device nozzle at the track branching part.

  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.

141 Introducing port 200 Nozzle 201 Frustum shape 210, 210a, 210b Guide 230, 230i Slit 300 Foreign substance removing device 500 Orbit branching portion 504 Blade rail C Crossing portion PA Compressed air

Claims (2)

A nozzle provided in a foreign matter removing device for a track branch portion that is provided for a track branch portion of a rail and removes foreign matter dropped between the rails by jetting compressed air,
A frustum-shaped spray housing part disposed on the front side of the crossing part where the rail intersects;
One or a plurality of slits provided so that compressed air can be ejected toward the rear side of the crossing portion, and formed on the side surface of the ejection housing portion;
A foreign matter removing device for the orbital branching portion, including a guide portion that is provided between the compressed air introduction port of the ejection housing portion and the one or more slits and guides the compressed air to the one or more slits. Nozzle.   The foreign matter removing device nozzle according to claim 1, wherein the guide portion has a conical shape.