JPH07107241B2 - Railroad ballast ballast scattering prevention equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a ballast scattering prevention facility that constitutes a railroad bed.

<< Prior Art >> As shown in Fig. 4, a train 13 traveling in a snowy area has a roof 14
In addition to seeing snow, a large amount of snow mass 16 adheres to the lower part 15 of the side wall of the vehicle in a frozen state. This is because the snow on the upper part of the side wall 17 that has been melted down by being heated by the heating heat inside the vehicle freezes on the lower part of the side wall 15 where the temperature is low. This is because And when this train 13 passes through the tunnel,
In winter, the underground temperature is much higher than the surface temperature, so the snowflakes 16 separate from the lower part 15 of the vehicle side wall and fall in the tunnel. When the speed of the train 13 is high, when the snow mass 16 collides with the roadbed 1, the ballast 2 on the roadbed is scattered with great force.

The scattered ballast has a risk of colliding with a vehicle and damaging a window glass or the like, but more dangerously damaging a track maintenance worker in the tunnel. Therefore, conventionally, in a snowy area, the danger as described above was avoided by slowing the train speed in the tunnel.

The same thing happens when a train goes from a cold region to a warm region or when the temperature rises, and if a snowflakes fall when a limited express train passes through a transit station, there is a risk of harming people on the platform. Because of that, I tried to slow down the train at that time as well.

<< Problems to be Solved by the Invention >> However, with the development of various high-speed transportation means, it has become indispensable to increase the running speed of a conventional railway in order to secure the superiority of the railway. Therefore, there is a demand for avoiding train deceleration in tunnels and when passing through stations, and in order to meet this demand, it is necessary to prevent scattering of ballast when snow falls. If the structure in the tunnel or the station yard does not use ballast like the slab ballast, the problem of ballast scattering does not occur, but a huge cost is required for the modification of the ballast.

Therefore, an object of the present invention is to provide a ballast scattering prevention facility that can be easily installed on an already constructed track and is inexpensive to install.

<< Means for Solving the Problem >> The ballast scattering prevention equipment of the present invention is provided with a side belt portion 1a of a roadbed 1.
It is provided with a plurality of units of covering nets 7 ... Installed above. The unit covering net 7 is a rectangle long in the extending direction of the rail 4 and has a mesh that does not allow ballast to pass therethrough.
A load bearing member 9 such as a rope or a frame is provided on the entire circumference. And each layer covering net 7 is the two rails 4 of the track,
The longitudinal ends of each of the covering nets are fixed to the rigid support member 6 penetrating in the direction orthogonal to the rail under the fasteners 4 with fasteners 11 and arranged side by side in the extending direction of the track.

<< Action >> By covering the side strip 1a of the roadbed with the covering net 7, the ballast 2 will not fly out even if the snow mass 15 collides with the roadbed.
It is possible to prevent the ballast from scattering and prevent the danger caused by this. In addition, since the cover nets 7 of a predetermined size are arranged side by side to cover the side strip 1a of the roadbed, it is convenient for transporting and constructing the cover net 7, and for replacing a damaged net. Can be done easily. Further, in the present invention, since the unit covering nets 7 ... Are held by the rigid support members 6 ... Which penetrate the two rails 4 under the rails at right angles to the rails, they can be easily installed on the existing track. Therefore, it is possible to avoid the risk that the covering net 7 is peeled off or dropped from the track bed 1.

<< Embodiment >> FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 is a perspective view of a railroad track, FIG. 2 is a plan view of a cover net, and FIG. 3 is a cover net. FIG. 3 is a plan view showing the fixing structure of FIG. In the figure, 1 is a roadbed formed by laying ballast 2, 3 is a sleeper arranged at a constant interval on the roadbed 1, 4 is a rail fixed on the sleeper, and the above-mentioned roadbed 1, sleeper 3 and rail 4 The track 5 is formed. Reference numeral 6 is a support member made of a bar material that penetrates under the two rails 4 of the track bed in a direction perpendicular to the rails, and both end portions thereof are projected to the outer portions of the two rails 4, and 7 is a side band portion of the track bed 1. A plurality of covering nets 1a, 1a are arranged on the supporting member 6 and fixed to the supporting member 6.

As shown in FIG. 2, the covering net 7 has a net body 8 having a mesh to the extent that the ballast 2 cannot pass through.
And a load bearing rope 9 for stretching the net body. The net is made of polyethylene filament of 400 denier, if one preferable example of the net yarn used for the main body 8 is shown.
Formed by twisting 0 strands, the fineness of the net yarn is 43,820 denier, net yarn 1
The breaking strength per book is 140 kg. Polyethylene net yarn is inexpensive and has good chemical resistance and is not subject to insects or molds, but has poor heat resistance and weather resistance. However, it can withstand use for more than 10 years under a constant temperature condition with a small amount of ultraviolet rays such as in a tunnel.

The net body 8 has a size in consideration of transportation and construction, and the mesh has a size that does not allow ballast to pass through. For example, the one shown in the figure has a width of 50 to 70 cm and a length of 3 m, with 12 to
17 lines, 75 lines in the length direction, using one side approximately 4 cm
Form a mesh of size. The periphery of the net body 8 is supported by a proof rope 9 to form a covering net 7.

The covering net 7 is fastened by fastening ropes 9 to the hooks 10 at both ends of the support member 6 passing under the rail 4 with a fastening rope 11, and the covering net is peeled off from the track bed 1 or dropped. There is no risk of damage, and the damaged covering net 7 can be easily replaced by removing the fastening rope 11. The width of the covering net does not have to be a size that covers the entire side band portion 1a, and may be within a range in which there is a risk that the snowflakes 16 fall and the ballast 2 scatters, which may cause harm to track maintenance workers and people on the platform.

<< Effects of the Invention >> By providing the ballast scattering prevention equipment of the present invention, it is possible to prevent the scattering of ballast when snowflakes fall, so it is possible to avoid the danger caused by this, and to avoid the danger of trains passing through tunnels or stations. There is no need to reduce the speed, and the running speed of the train on the conventional railway can be increased and the time distance can be shortened.
Further, in the present invention, since the unit covering net is fixed to the supporting member that is passed under the rail to have the structure described on the roadbed, it can be easily mounted on the roadbed of the conventional structure, and the installation cost is low. is there.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a perspective view of a line in a tunnel, FIG. 2 is a plan view of a covering net, and FIG. 3 is a fixing of the covering net. It is the top view which showed the structure. FIG. 4 is a schematic diagram showing how snowflakes adhere to the train. In the figure, 1: Roadbed, 2: Ballast 4: Rail, 5: Track 6: Support member, 7: Cover net 9: Bearing rope, 11: Fastening rope

Claims (1)

[Claims] 1. A rectangular unit covering net (7) having a mesh to the extent that a ballast (2) laid on a ballast (1) does not pass therethrough and having a load bearing member (9) all around. Are arranged side by side in the side strip (1a) of the roadbed so that their long sides are parallel to the rail (4) in the direction of extension of the track (5), and below the two rails (4), (4) of the track. Ballast scattering prevention equipment for railroad beds, in which both longitudinal ends of the unit covering net (7) are fixed to a rigid support member (6) penetrating in a direction orthogonal to the rail (4).