JP7139170B2 - Duct-integrated sleeper - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sleeper used for railroad tracks and a synthetic sleeper having a pipeline, for example, a technology that is effective when applied to a pipeline-integrated sleeper having a pipeline for supplying a liquid for snow melting or snow removal to a nozzle. Regarding.

Traditionally, railroad turnouts installed in snowy areas are melted by spraying hot water, etc., toward the movable parts of turnouts in order to prevent points from not being converted due to snow and ice. A snow-melting device is installed to remove the snow. As such a snow melting device, for example, as shown in FIG. 6, there is known a snow melting device provided with nozzles N1 and N2 for injecting hot water toward the tongue portion. Further, there has been proposed an invention related to a snow removing device that ejects liquid by the pressure of compressed gas to blow off and remove snow and ice caught between the basic rail Rb and the tongue rail Rt (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2001-279633

In the conventional snow melting device shown in FIG. 6 and the snow removing device disclosed in Patent Document 1, the piping 12 for supplying hot water or water pushed out by compressed gas to the nozzles is arranged in an exposed state along the sleepers 10 . Because it was installed, the piping is susceptible to damage due to track maintenance work, weather, and falling ice and snow adhering to the vehicle. Therefore, in ballasted track, when track maintenance work is performed by using a track maintenance machine called a multiple titan parr to harden the track bed, the pipes must be removed in advance and reinstalled after the work is completed, resulting in poor work efficiency. was there.
In addition, on railway tracks, cables that transmit signals that activate point machines and cables that connect impedance bonds and rails to separate train currents and signal currents flowing on rails cross the tracks. However, even at such locations, the cable is exposed and the same problem as described above arises.

The present invention has been made in view of the above problems, and is intended to prevent installation on a track in a state where pipes for supplying water for snow melting or snow removal to nozzles and cables for transmitting signals are exposed. To provide a conduit-integrated sleeper capable of avoiding damage and making it difficult to be damaged.
Another object of the present invention is to eliminate the need to remove in advance the pipes that supply water for snow melting or snow removal to the nozzles and the cables that transmit signals and reinstall them after the work is completed during track maintenance work for tamping the track bed. To provide a conduit-integrated sleeper capable of improving work efficiency without causing trouble.

In order to achieve the above object, a pipeline integrated sleeper according to the present invention comprises:
A pipe having both ends opened is provided inside a rectangular parallelepiped sleeper body made of a synthetic resin material so as to pass through the sleeper body along the longitudinal direction ,
The sleeper main body is formed by joining a plurality of synthetic resin plates so as to overlap in the vertical direction and bonding them with an adhesive,
The sleeper main body is composed of three synthetic resin plates, and the top surface of the synthetic resin plate positioned at the bottom and the bottom surface of the synthetic resin plate positioned in the middle of the three synthetic resin plates are provided with semi-semiconductors. Cylindrical grooves are formed respectively,
By joining the two synthetic resin plates having the semi-cylindrical grooves, the semi-cylindrical grooves are combined to form a cylindrical cavity, and the pipe is arranged in the cavity . It is designed to
According to the above configuration, since the piping is arranged inside the sleeper body, it is possible to use this piping to supply hot water for melting snow and to lay cables across the track. This makes it possible to prevent hot water supply pipes and signal transmission cables from being installed on the track in a state of being exposed on the track surface, thereby making them less likely to be damaged.
In addition, it becomes easy to form a cavity for housing a pipe, and thus to manufacture a pipeline-integrated sleeper with a built-in pipe. Moreover, distortion can be reduced as compared with the case where the entire sleeper body is formed by resin molding at once.
Furthermore, since the piping is installed at a position 1/3 from the bottom of the sleeper body in the height direction, when installing the piped-integrated sleeper on the ballast track, the piping for hot water supply and the cable for signal transmission are not required. It is sufficiently ballasted to avoid laying exposed on the track surface.

Here, desirably, the pipe is formed of a synthetic resin material, and is provided with connecting portions at both ends thereof.
In this way, by using synthetic resin piping, it is possible to enhance durability particularly when used for water supply. In addition, by providing mouthpieces as connecting portions at both ends of the synthetic resin pipe, the water supply pipe can be easily and reliably connected. Furthermore, by laying the cables in the pipes in advance and using both ends of the pipes as connecting parts for the cables, it is not necessary to run the cables through the sleepers when replacing the sleepers, and the work efficiency can be improved.

Preferably, a T-shaped joint is provided in the middle of the pipe, and the end of the pipe branched by the T-shaped joint is arranged so as to protrude from the upper surface of the sleeper body.
According to such a configuration, it is possible to attach a nozzle for discharging hot water for melting snow to the upper end of the joint projecting from the upper surface of the sleeper body, thereby facilitating installation of the snow melting device.

According to the pipe-integrated sleeper according to the present invention, it is possible to prevent the pipes and cables for supplying water to the nozzles for melting or removing snow from being installed on the track in an exposed state, thereby making them less likely to be damaged. be able to. In addition, during track maintenance work for tamping the track bed, pipes for supplying water for snow melting or snow removal to nozzles and cables for transmitting signals are removed in advance, and there is no need to re-install them after the work is completed, thereby improving work efficiency. has the effect of being able to

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a first embodiment of a pipeline-integrated sleeper according to the present invention, wherein (A) is a front view showing the whole sleeper, and (B) is a side view. An example of how to configure the pipeline-integrated sleeper of the embodiment is shown. It is a perspective view showing. (A), (B), and (C) show how the clamper applies pressure when the pipeline-integrated sleeper of the embodiment is configured by bonding three upper, middle, and lower synthetic resin plates with an adhesive. It is a conceptual diagram showing an example of. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows an example of a form in which the conduit-integrated sleeper of the embodiment is used in a snow melting device, where (A) is a front view of the sleeper and (B) is a cross-sectional side view. 1 is a plan view showing an outline of a snow melting device for a turnout using a conduit-integrated sleeper according to an embodiment; FIG. FIG. 10 is a plan view showing an outline of a snow melting device in a conventional turnout;

Hereinafter, an embodiment of a pipeline-integrated sleeper according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows the configuration of the sleeper of the first embodiment, (A) is a front view showing the whole sleeper, and (B) is a side view.
As shown in FIG. 1(A), a sleeper 10 of this embodiment has a rectangular parallelepiped sleeper main body 11 with a resin pipe 12 built therein so as to pass through the sleeper along the longitudinal direction of the sleeper. It is arranged in

The sleeper main body 11 is made of synthetic resin such as artificial wood or a composite material made of 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, so it is preferable to use such a polyethylene pipe. 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 in the sleeper body 11, it becomes possible to perform the work without damaging the pipe when carrying out track maintenance work for compacting the track bed with a track maintenance machine.

At 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 connected to a water supply pipe via a flexible joint (Fig. 5). reference).

One of mouthpieces 15A and 15B at the upper ends of T-shaped joints 14A and 14B in the middle of pipe 12 is closed with a plug, and a nozzle is attached to the other. A configuration in which nozzles are attached to both of the T-shaped joints 14A and 14B is also possible, but by attaching a nozzle to only one of them, it is possible to avoid a drop in ejection pressure.
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, it is possible to prevent the water supply pipe connected to the end of the pipe 12 from being buried in the ballast and exposed to the surface and easily damaged.

Furthermore, the sleeper main body 11 can be formed by integral molding using the pipe 12 as an insert, but in this embodiment, as shown in FIGS. 11A, 11B, and 11C are superimposed on each other, an adhesive is applied to the bonding surfaces, and pressure is applied from above and below by a clamper to bond them together. Further, among the three resin plates 11A, 11B, and 11C, a semi-cylindrical groove 11a forming a space for incorporating the pipe 12 is formed in the upper surface of the lowermost resin plate 11C and the lower surface of the central resin plate 11B. and 11b are formed, respectively, and the grooves 11a and 11b are combined to form a cylindrical cavity.

The pipe 12 is arranged in the cavity formed by the grooves 11a and 11b before the resin plates 11A, 11B, and 11C are adhered, and the adhesive is poured into the outer peripheral gap 10a. After the resin plates 11A, 11B, and 11C are adhered, the gaps around the outer circumferences of the mouthpieces 13A and 13B at both ends of the resin pipe 12 are filled with a sealant such as silicon sealant for sealing. This prevents the pipe 12 from moving or rattling inside the cavity, and prevents rainwater or meltwater from entering the gap.

As for the method of applying pressure when bonding the resin plates 11A, 11B, and 11C, as shown in FIG. When the center of the resin plate 11C is pressurized when there is a cavity H, as shown in FIG. It turns out that Therefore, in this embodiment, as shown in FIG. 3C, both sides of the resin plate are pressed by clampers 31A and 31B. A plurality of clampers are installed in the longitudinal direction of the sleeper, and the resin plate is pressed by the plurality of clampers. As a result, the three resin plates 11A, 11B, and 11C can be bonded and integrated without creating a gap at both ends of the joint surfaces.

By forming the sleeper 10 with the pipe 12 having the T-shaped joints 14A and 14B in the middle as described above, the pipe 12 can be used as a hot water supply pipe for a snow melting device. The inventors attached a nozzle to one of the T-shaped joints 14A and 14B of the sleepers formed as described above, and conducted 500 tests in which water was supplied to the pipe 12 at a water pressure of 1.0 MPa and ejected for 3 minutes. repeated several times. As a result, it was confirmed that no abnormality such as water leakage occurred.

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. 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 positioned outside the pipe 12 as shown in FIG. 4(B). , the formation of the pipe 12 is not hindered.

(Modification)
In the above-described embodiment, a sleeper for a snow-melting device having a built-in pipe 12 having T-shaped joints 14A and 14B in the middle was described. It is also possible to configure it as a crosstie for the cable to pass through. Further, according to the sleeper having such a configuration, when it is desired to lay a cable crossing the track, the cable can be laid in a state in which it passes through the inside of the sleeper and is not exposed on the surface. As a result, it is possible to perform track work such as track maintenance by compacting the ballast with the track maintenance machine without damaging the cable. Furthermore, by laying the cable in the pipe in advance and changing the base to the connection part of the cable, there is no need to run the cable through the sleeper when replacing the sleeper, and the work efficiency can be improved.

Next, the configuration of a snow melting device effective by applying the conduit-integrated sleeper of the above embodiment will be described with reference to FIG.
FIG. 5 is a plan view showing a configuration example of a snow-melting device having pipe-integrated sleepers according to this embodiment.
In the snow melting apparatus shown in FIG. 5, the sleepers 10A and 10B each include the piping 12 described in the above embodiment. One of the sleepers 10A has a 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 nozzle 23A in the left mouthpiece 15B. Nozzle 23B is attached to .

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 nozzles 23A and 23B are mounted so as to face the direction orthogonal to the sleepers, that is, the direction substantially parallel to the rail R, and can jet hot water toward between the basic rail Rb and the tongue rail Rt in front. is configured as

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-described embodiment, the sleeper main body 11 is formed by bonding the resin plates 11A, 11B, and 11C that are divided into three upper and lower parts. You can make it work. In this case, it is desirable that the groove forming the cavity for arranging the pipe 12 is formed by combining the semi-cylindrical grooves formed in the joint surfaces of the two resin plates. will be placed in

Moreover, the sleeper main body 11 may be formed by bonding resin plates that are divided into left and right, instead of being divided vertically into three or two. By constructing the sleeper main body 11 with a resin plate divided into left and right, it is possible to provide the pipe 12 at an arbitrary height position.
Furthermore, in the above embodiment, the piping 12 inside the sleeper body 11 is used to supply hot water for melting snow, but it can also be used to supply compressed gas for removing snow.

Reference Signs List 10 sleeper 11 sleeper body 11A, 11B, 11C resin plate 11a, 11b groove 12 pipe 13A, 13B cap 14A, 14B T-shaped joint 20 rail fastener 21 embedded screw 22A, 22B nozzle 23A, 23B flexible joint 24 pipe 25 hot water supply Pump Rb Basic rail Rt Tongue rail

Claims (3)

A pipe having both ends opened is provided inside a rectangular parallelepiped sleeper body made of a synthetic resin material so as to pass through the sleeper body along the longitudinal direction ,
The sleeper main body is formed by joining a plurality of synthetic resin plates so as to overlap in the vertical direction and bonding them with an adhesive,
The sleeper main body is composed of three synthetic resin plates, and the top surface of the synthetic resin plate positioned at the bottom and the bottom surface of the synthetic resin plate positioned in the middle of the three synthetic resin plates are provided with semi-semiconductors. Cylindrical grooves are formed respectively,
By joining the two synthetic resin plates having the semi-cylindrical grooves, the semi-cylindrical grooves are combined to form a cylindrical cavity, and the pipe is arranged in the cavity . A duct-integrated sleeper characterized by: 2. The conduit-integrated sleeper according to claim 1, wherein said pipe is made of a synthetic resin material, and connection portions are provided at both ends thereof. 3. The pipe according to claim 1 or 2, wherein a T-shaped joint is provided in the middle of the pipe, and an end of the pipe branched by the T-shaped joint is arranged so as to protrude from the upper surface of the sleeper body. Duct-integrated sleeper as described.

Images