JP7194381B2 - Snow-melting fluid injection device and snow-melting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fluid injection nozzle used for snow melting or snow removal on railroad tracks, and more particularly to a snow melting fluid injection suitable for attachment to a pipeline-integrated sleeper having a pipeline for supplying snow-melting fluid. The present invention relates to a device and a snow melting device using the same.

Traditionally, railroad turnouts installed in snowfall areas are melted by injecting warm water into the movable parts of the turnouts to prevent point failures caused by snow and ice. A snow melting device is installed to remove it. As such a snow melting device, for example, as shown in FIG. 8, there is known a snow melting device provided with nozzles N1 and N2 for injecting hot water toward the tongue portion.

In addition, the invention relates to a snow removing device that ejects liquid from a nozzle by the pressure of compressed gas and removes snow and ice sandwiched between the basic rail Rb and the tongue rail Rt by blowing away the snow and ice with high-pressure water and compressed air (Patent Document 1). Also, an invention relating to a liquid injection nozzle used in a snow melting device, which is provided with attitude changing means for adjusting the direction of liquid injection (Patent Document 2), has been proposed.

Japanese Patent Application Laid-Open No. 2001-279633 JP-A-2002-346436

In the conventional snow melting device shown in FIG. 8 and the snow removal device disclosed in Patent Document 1, the pipe 12 for supplying hot water or water pushed out by compressed gas to the injection nozzle is exposed along the sleeper 10. As it was installed, the piping is susceptible to damage due to weather and falling ice and snow adhering to the vehicle. In ballasted tracks, when track maintenance work is performed to compact the ballast bed with a track maintenance machine called Multiple Titan Parr, the pipes must be removed in advance and re-installed after the work is completed, resulting in poor work efficiency. there were.

Therefore, the applicant of the present application has proposed that by providing a pipe in the interior of the sleeper body formed of a synthetic resin material so as to penetrate the sleeper body along the longitudinal direction, the pipe that supplies hot water to the injection nozzle is exposed. We have developed a pipeline-integrated sleeper that can avoid being installed on the track and make it less likely to be damaged, and have filed a patent application (patent application 2018-127987).

However, even if a pipe for supplying hot water to the nozzle is provided inside the sleeper body, the injection nozzle connected to the pipe may protrude in the width direction of the sleeper as described in Patent Documents 1 and 2. If a nozzle with an excessive length is used, the nozzle may interfere with track maintenance work, and the nozzle itself may be damaged by the impact of snow falling from a running train. The above patent application (Japanese Patent Application No. 2018-127987) describes the use of a short nozzle that fits within the width of the sleeper, but does not describe a specific structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. An object of the present invention is to provide a snow-melting device that
Another object of the present invention is to provide a snow-melting fluid injection device that is not likely to be damaged by a collision with ice and snow falling from a running train.

In order to achieve the above object, the present invention
a main body block having an inlet on the lower surface and an outlet on the front, and a fluid passage communicating between the inlet and the outlet is formed therein; and an injection nozzle provided at the outlet of the main body block. and a snow-melting fluid ejection device connected to an end of a pipeline projecting upward from a sleeper and ejecting a fluid delivered from the pipeline,
In the inlet of the main body block,
A coupling fitting having a female threaded portion to be screwed into a male thread provided at the end of the pipeline is formed on the inner peripheral surface of the lower portion, and a sealing material is attached to the outer peripheral surface of the upper portion; A coupling means is provided that is fixed to the inlet and has a water conduit having a sleeve that can be fitted to the fitting at the bottom.
According to the above configuration, it is possible to realize a fluid injection device that can be accommodated within the width of the sleeper by reducing the amount of projection of the injection nozzle. This eliminates the need for re-installation and improves work efficiency.

Here, preferably, the injection nozzle has a rear end connected to the outlet of the main body block by a ball joint structure.
With such a configuration, the direction of the injection nozzle can be adjusted, and snow can be melted efficiently when applied to a snow melting device.

Also desirably, it has a base plate fixed to the upper surface of the sleeper, and mounting means comprising a support plate attached to the base plate at a predetermined distance,
The body block is placed and fixed on the support plate.
With such a configuration, even if there is a variation in the height of the mouthpiece to which the snow-melting fluid ejection device is connected, the height of the ejection nozzle is adjusted to absorb the variation, thereby facilitating the snow-melting fluid ejection device. can be installed in

Also, desirably, the support plate is provided with a nozzle direction adjustment mechanism for adjusting and fixing the direction of the injection nozzle.
According to such a configuration, since the direction of the injection nozzle can be maintained in an adjusted state, it is possible to prevent the snow-melting efficiency from deteriorating due to the gradual deviation of the injection direction of the fluid.

Further preferably, a protective cover fixed to the base plate is provided so as to cover the body block and the injection nozzle placed on the support plate of the mounting means. .
According to such a configuration, it is possible to prevent the injection nozzle from being damaged by the collision of ice and snow falling from a running train.

Furthermore, the snow melting device according to another invention of the present application is
a snow melting fluid ejection device configured as described above;
a pump for delivering snow melting fluid;
a pipeline-integrated sleeper having a pipeline inside that is connected to a mouthpiece that protrudes from the upper surface and feeds a snow-melting fluid;
a pipe for fluid delivery connecting between the pump and an inlet of the conduit in the sleeper;
The water conduit is connected to the mouthpiece by the coupling means.

According to the snow melting device having the above configuration, since the piping is arranged inside the main body of the sleeper, hot water for melting snow can be supplied using this piping. It is possible to prevent the piping from being installed on the track in a state where the piping is exposed on the track surface, thereby making it difficult for the feeding piping to be damaged.

According to the snow-melting fluid injection device and the snow-melting device according to the present invention, it is possible to eliminate the work of removing in advance and reinstalling after the track maintenance work for tamping the track bed, thereby improving work efficiency. In addition, there is an effect that the snow-melting fluid injection device is not damaged by the collision of ice and snow falling from a running train.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows one configuration example of a pipeline-integrated sleeper to which a snow-melting fluid ejection device according to the present invention is connected, wherein (A) is a front view showing the whole sleeper, and (B) is a side view. An example of the form which utilizes the pipe|tube integrated sleeper of FIG. 1 for a snow-melting apparatus is shown, (A) is a front view of a sleeper, (B) is a cross-sectional side view. FIG. 2 is a plan view schematically showing a snow melting device for a turnout using the pipe-integrated sleeper of FIG. 1; 1A and 1B are a plan view and a front view, respectively, showing an embodiment of a nozzle unit that constitutes a snow-melting fluid ejection device according to the present invention. FIG. (A) and (B) are partial cross-sectional side views of a nozzle unit that constitutes the snow-melting fluid injection device of the embodiment. FIG. 5 is a perspective view showing the configuration of a snow-melting fluid ejection device including the nozzle unit shown in FIG. 4 and an attachment unit for attaching the nozzle unit to a pipeline-integrated sleeper; (A) and (B) are a plan view and a front view showing one embodiment of a protection unit that constitutes the snow-melting fluid injection device of the embodiment. FIG. 10 is a plan view showing an outline of a snow melting device in a conventional turnout;

Embodiments of a snow-melting fluid injection device according to the present invention and a snow-melting device using the same will be described below in detail with reference to the drawings. The pipeline-integrated sleeper will be described. FIG. 1 shows a configuration example of a pipeline-integrated sleeper, (A) is a front view showing the whole sleeper, and (B) is a side view.
As shown in FIG. 1A, a sleeper 10 to which the snow-melting fluid injection device of this embodiment is connected has a rectangular parallelepiped sleeper main body 11 and a resin pipe 12 extending along the longitudinal direction of the sleeper. It is arranged in a state of being built in so as to penetrate the sleeper.

The sleeper main body 11 is made of a synthetic resin such as artificial wood or a composite material made of a synthetic resin such as glass fiber and hard urethane foam. As the pipe 12, a polyethylene pipe has been provided as a pipe for water pipes excellent in corrosion resistance and earthquake resistance, and such a polyethylene pipe can be used. Although metal pipes may be used, synthetic resin pipes can be used to increase durability especially when used as a water pipe for a snow melting device. In addition, since the pipe 12 is arranged inside the sleeper body 11, it is possible to carry out the work without damaging the pipe when carrying out track maintenance work for compacting the track bed with a track maintenance machine.

On the other hand, on both ends of the pipe 12, caps 13A and 13B having male threads formed on the outer circumference are fixed. In addition, in the middle of the pipe 12, T-shaped joints 14A and 14B are provided in an inverted state for branching the pipe line, and male threads are formed on the outer periphery of the upper ends of the T-shaped joints 14A and 14B. The bases 15A and 15B are fixed. When used as a water pipe for a snow melting device, one of the mouthpieces 13A and 13B at both ends of the pipe 12 is closed with a plug (cap), and the other is provided with flexible joints 24A and 24B as shown in FIG. A pipe 25 for water supply is connected through the pipe.

One of the mouthpieces 15A and 15B at the upper end of the T-shaped joints 14A and 14B in the middle of the pipe 12 is closed with a plug, and an injection nozzle is attached to the other. Although it is possible to attach injection nozzles to both of the T-shaped joints 14A and 14B, it is possible to avoid a drop in ejection pressure by attaching an injection nozzle to only one of them.
In this embodiment, although not particularly limited, the pipe 12 is arranged at a height of ⅓ from the bottom of the sleeper main body 11 in the thickness direction. Accordingly, in the ballast track, the flexible joints 24A and 24B connected to the side portion of the pipe 12 and the water pipe are buried in the ballast, and can be prevented from being exposed to the surface and easily damaged.

The sleeper main body 11 can be formed by integral molding with the pipe 12 as an insert. Alternatively, three strip-shaped resin plates may be superimposed, an adhesive may be applied to the bonding surfaces, and pressure may be applied from above and below by a clamper to bond them.
The pipe 12 is placed in the cavity formed by the groove before the resin plate is adhered, and the adhesive is poured into the outer peripheral gap 10a (FIG. 1). A sealing agent such as silicone sealant is filled in the gaps around the perimeters of the mouthpieces 13A and 13B to seal them. This prevents the pipe 12 from moving or rattling inside the cavity, and prevents rainwater or meltwater from entering the gap.

When the piping 12 in the sleeper body 11 is used as a hot water supply pipeline constituting a snow melting device, a tie plate 21 is attached to the upper surface of the sleeper body 11 as shown in FIG. 2(A). A rail R is placed therethrough and fixed to the sleeper by rail fasteners 20 . The rail fastener 20 is provided with an embedded screw 22 for fixing it to the sleeper 10. The lower end of the embedded screw 22 is located outside the pipe 12 as shown in FIG. 2(B). , the formation of the pipe 12 is not hindered.

Next, the structure of the snow melting device using the pipe-integrated sleeper will be described with reference to FIG.
FIG. 3 is a plan view showing a configuration example of a snow melting device using the conduit-integrated sleeper of FIGS. 1 and 2. FIG.
In the snow melting apparatus shown in FIG. 3, the sleepers 10A and 10B having the pipes 12 described above are used. One sleeper 10A has a fluid injection nozzle 23A in the right mouthpiece 15A of the mouthpieces 15A and 15B at the upper ends of the T-shaped joints 14A and 14B projecting from the upper surface of the sleeper body 11, and the other sleeper 10B has a fluid injection nozzle 23A. An injection nozzle 23B is attached to the mouthpiece 15B.

Flexible joints 24A and 24B are connected to mouthpieces 13A and 13B projecting from the sides of the sleepers 10A and 10B, respectively, and a pipe 25 for supplying hot water is connected to the other ends of these flexible joints 24A and 24B. Then, hot water is fed to the piping 12 in the sleepers 10A and 10B through the pipe 25 by the hot water supply pump 26. As shown in FIG.
The injection nozzles 23A and 23B are mounted so as to face in a direction orthogonal to the sleepers, that is, in a direction substantially parallel to the rail R, and can inject hot water toward between the basic rail Rb and the tongue rail Rt in front. configured to allow

Next, an embodiment of a snow-melting fluid injection device having injection nozzles 23 connected to the conduit-integrated sleepers 10 will be described with reference to FIGS. 4 to 7. FIG.
The snow-melting fluid injection device of this embodiment includes a nozzle unit 30 having an injection nozzle 23, a mounting unit 40 for fixing the nozzle unit 30 to the sleeper 10, and a protection unit 50 for protecting the nozzle unit 30 from falling snow. It consists of

4 and 5 show details of the nozzle unit 30 of the above units. 4A and 4B are plan and front views of the nozzle unit 30, and FIGS. 5A and 5B are partial cross-sectional side views of the nozzle unit 30. FIG.
As shown in FIG. 4, the nozzle unit 30 has a substantially rectangular parallelepiped shape and includes an adapter 31 for connecting the injection nozzle 23 to the mouthpiece 15A (15B) at the upper end of the T-shaped joint 14A (14B). A water conduit 32 fixed to the inlet formed on the lower surface of the, a fitting 33 (FIG. 5A) for connecting the water conduit 32 to the mouthpiece 15A (15B), and formed on the front surface of the adapter 31 A restraining plate 34 and the like are provided for mounting the injection nozzle 23 on the exit port.

The adapter 31 is made of metal such as stainless steel, and is formed with a water flow path that guides jetted fluid from an inlet on the lower surface to an outlet on the front surface. The water channel has a vertical hole rising vertically from an inlet on the bottom surface and a lateral hole extending horizontally from the center of the vertical hole, and the outlet port on the front surface communicates with the lateral hole.
Since the water passage is formed by cutting a metal block with a drill, the vertical hole is formed as a through hole, and a blind screw 35 is screwed to the upper surface of the adapter 31 facing the through hole, so that the water can flow. Blocking the opening of the passageway. A blind screw 36 is also screwed into an opening on the side of the adapter 31, which serves as the entrance of the lateral hole, to block the water flow path.

Although not shown, in the vicinity of the outlet of the water channel formed in the adapter 31, for example, a cross-shaped rectifying piece is provided in order to regulate the flow of the fluid guided to the outlet.
Furthermore, as shown in FIGS. 4A and 5A, the adapter 31 has three bolt insertion holes 31a, through which bolts are inserted for fixing to the support base that constitutes the mounting unit 40. formed in the direction
The water conduit 32 fixed to the lower surface of the adapter 31 includes, as shown in FIG. It has a sleeve 32b integrally formed with the male screw portion 32a.

The fitting 33 has a cylindrical shape with an outer diameter slightly smaller than the inner diameter of the sleeve 32b of the water conduit 32, and is screwed into a male screw formed on the mouthpiece 15A (15B) at the upper end of the T-shaped joint 14A (14B). A female threaded portion 33a is formed on the inner peripheral surface of the lower part, and an O-ring 33b as a sealing material is engaged in a groove formed on the outer peripheral surface of the upper part. Water is prevented from leaking through a gap between a fitting 33 screwed to the water pipe 32 and the sleeve 32b of the water pipe 32.

Also, even if the height of the mouthpiece 15A (15B) of the T-shaped joint 14A (14B) varies, the sleeve 32b will not move against the fitting 33 as shown in FIGS. 5A and 5B. It has a function of absorbing variations by moving vertically and adjusting the height of the adapter 31 from the top surface of the sleeper to a constant level. Further, a tapered surface 32c is formed on the inner circumference of the lower end of the sleeve 32b to facilitate insertion of the upper end of the fitting 33. As shown in FIG.
When attaching the nozzle unit 30 to the sleeper, first, the fitting 33 is screwed into the mouthpiece 15A or 15B of the T-shaped joint 14A or 14B on the upper surface of the sleeper. By fitting the sleeve 32b of the water pipe 32, the water supply pipe 12 in the sleeper and the water flow path in the nozzle unit 30 are connected.

The injection nozzle 23 attached to the outlet formed on the front surface of the adapter 31 is attached by a ball joint structure (not shown). A concave surface having a curve corresponding to the diameter of a certain ball is formed so that the direction of the injection nozzle 23, that is, the direction of fluid injection can be adjusted.

The restraining plate 34 has a function of restraining the ball at the base of the injection nozzle 23 from being pulled out, and is fixed to the front surface of the adapter 31 by four bolts 37 as shown in FIG. 4(B). It is It should be noted that once the orientation of the injection nozzle 23 is adjusted, it is fixed by a lock mechanism of the mounting unit 40, which will be described later.
According to the nozzle unit 30 having the configuration described above, it is possible to realize a snow-melting fluid ejection device that fits within the width of the sleeper.

Next, the configuration of a mounting unit 40 for fixing the nozzle unit 30 to a sleeper will be described with reference to FIG.
As shown in FIG. 6, the mounting unit 40 includes a base plate 42 fixed to the crosstie 11 by fixing bolts 41 inserted through bolt holes provided at four corners, and a base plate 42 with its head facing downward. The support plate 45 is horizontally supported at a predetermined distance from the base plate 42 by four bolts 43 welded together and nuts 44 screwed to each bolt 43, and the direction of the injection nozzle 23 can be adjusted. A nozzle orientation adjustment mechanism 46 is provided.

The nozzle unit 30 is placed on the support plate 45 and fixed with three bolts 47 . Although not shown, the support plate 45 has an opening through which the water conduit 32 fixed to the lower surface of the adapter 31 of the nozzle unit 30 can be inserted.
The nozzle direction adjustment mechanism 46 includes a ring 61 fixed to a position surrounding the injection nozzle 23 of the nozzle unit 30 placed on the support plate 45, and a ring 61 attached to the ring 61 from three directions at 120 degree intervals. 61 and three adjustment screws threaded toward the center. In addition, in FIG. 6, two screws 62A and 62B of the three adjusting screws are shown.

Adjustment by the nozzle orientation adjusting mechanism 46 is performed by first adjusting the orientation of the injection nozzle 23 with the three adjustment screws 62A, 62B, and 63C (not shown) loosened, and once the orientation is determined, the lower surface of the injection nozzle 23 and the After inserting a bush or wedge having a corresponding height into the clearance between the ring 61 and the peripheral surface, the adjustment screws 62A, 62B, and 63C are turned in the tightening direction so that the tips of the screws are brought into contact with the outer periphery of the injection nozzle 23. It is done by

Attachment pieces 48 for attaching the cover 51 (see FIG. 7) of the protection unit 50 are provided in the vicinity of the four fixing bolts 41 of the base plate 42 .
As shown in FIG. 7, the protection unit 50 includes a roof-shaped cover 51 that covers the upper part of the nozzle unit 30 placed on the support plate 45, and a lower part of the cover 51 that covers the four corners of the base plate 42. and a bolt 52 fixed to the mounting piece 48 of the .

As shown in FIG. 7B, an opening 51a is formed in a portion of the cover 51 facing the tip of the injection nozzle 23, and the fluid injected from the injection nozzle 23 flows forward through the opening 51a. is released.
Further, as shown in FIG. 7A, the cover 51 is formed with a tapered portion 51b extending from the upper side to the side wall, which relieves the shock caused by the collision of the snow and ice blocks dropped from the running train, thereby preventing the cover 51 from being deformed. constructed to prevent breakage. Although not particularly limited, the side portions of the cover 51 (left and right in FIG. 7(B)) are open.

Although the invention made by the inventor has been specifically described based on the embodiment, the invention is not limited to the embodiment. For example, in the above embodiment, the sides of the cover 51 are open, but side walls may be provided to close the inner space.
Further, in the above-described embodiment, the adapter 31 is provided with a vertical hole and a horizontal hole as a water flow passage.
Furthermore, in the above embodiment, the case of using the nozzle for injecting fluid for melting snow has been described, but it can also be used for injecting compressed gas for removing snow.

10 sleeper 11 sleeper body 12 pipe 13A, 13B base 14A, 14B T-shaped joint 20 rail fastener 21 tie plate 22 embedded screw 23A, 23B injection nozzle 24A, 24B flexible joint 25 pipe 26 hot water supply pump 30 nozzle unit 31 adapter ( body block)
32 water conduit 33 fitting 40 mounting unit 42 base plate 45 support plate 46 nozzle direction adjustment mechanism 50 protection unit 51 cover Rb basic rail Rt tongue rail

Claims (6)

a main body block having an inlet on the lower surface and an outlet on the front, and a fluid passage communicating between the inlet and the outlet is formed therein; and an injection nozzle provided at the outlet of the main body block. and a snow-melting fluid ejection device connected to an end of a pipeline projecting upward from a sleeper and ejecting a fluid delivered from the pipeline, wherein
In the inlet of the main body block,
A coupling fitting having a female threaded portion to be screwed into a male thread provided at the end of the pipeline is formed on the inner peripheral surface of the lower portion, and a sealing material is attached to the outer peripheral surface of the upper portion; A snow-melting fluid injection device, comprising: a coupling means that is fixed to the introduction port and has a water conduit having a sleeve that can be fitted to the fitting at the lower portion thereof. 2. The snow melting fluid injection device according to claim 1, wherein the rear end of the injection nozzle is connected to the outlet of the main block by a ball joint structure. a base plate fixed to the upper surface of the sleeper; and mounting means comprising a support plate mounted at a predetermined distance from the base plate;
3. The snow-melting fluid injection device according to claim 1, wherein said main body block is placed and fixed on said support plate. 4. The snow melting fluid injection device according to claim 3, wherein the support plate is provided with a nozzle direction adjustment mechanism for adjusting and fixing the direction of the injection nozzle. 3. A protective cover fixed to the base plate is provided so as to cover the upper part of the main body block and the injection nozzle placed on the support plate of the mounting means. 5. The snow melting fluid injection device according to 4 above. a snow melting fluid injection device according to any one of claims 1 to 5;
a pump for delivering snow melting fluid;
a pipeline-integrated crosstie having a pipe inside which is connected to a mouthpiece projecting from the upper surface and which feeds a snow-melting fluid;
a pipe for fluid delivery connecting between the pump and an inlet of the conduit in the sleeper;
A snow melting device, wherein the conduit is connected to the mouthpiece by the coupling means.

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