JP2005264567A - Crushing structure of frozen snow sticking to railroad crossing board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crushing structure of frozen snow for a railroad crossing board for easily removing stuck ice and snow. <P>SOLUTION: The railroad crossing board 10 comprises a plurality of basic modules 12. The module 12 is provided with a resin base 14 and a paving plate 16. The paving plate 16 is stuck into a recess 20 of the base 14. The paving plate 16 comprises a rubber panel 28 and a reinforcing panel 30. The rubber panel 28 is an elastically deformable rubber material. When a vehicle passes the railroad grade crossing board 10, vehicle load is applied to the paving plate 16. The rubber paving plate 16 sinks receiving the vehicle load. When the rubber panel 28 sinks directly under the tire of the passing vehicle, the frozen snow is crushed into small pieces. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a railroad crossing board that can easily remove adhering ice and snow. More particularly, the present invention relates to a frozen ice-snow crushing structure attached to a railroad crossing board provided with a paving board made of an easily elastically deformable material. In the present invention, when a vehicle passes over frozen ice and snow, the pavement plate is greatly deformed. Try to remove.

  In cold regions, snow on the railroad crossing board freezes, and when the railroad crossing board passes, people may fall or the vehicle may slip. In such a cold region, in order to secure the passage of people and vehicles, ice and snow adhering to the railroad crossing board is removed by some means. Usually, an operator crushes frozen snow and snow with a hammer or the like, and removes the fine snow and snow pieces from the railroad crossing board with a scoop or the like.

A snow melting device that removes ice and snow using heat has also been proposed. This type of snow melting device has a structure in which a tubular body through which a heated fluid is passed is embedded in a railroad crossing pavement plate (see, for example, Patent Document 1 and Patent Document 2).
JP-A-8-74204 (paragraph number 0016, FIG. 1) Japanese Patent Laid-Open No. 11-29903 (paragraph number 0011, FIG. 1)

  However, if the removal work is carried out every time the frozen snow is frozen, the effort cannot be measured considering the number of crossings. Since snowfall occurs in a certain area, if the removal work is performed quickly, a large amount of labor must be concentrated at one time, and such a response is virtually impossible. .

  Further, for example, Japanese Patent Application Laid-Open No. 8-74204 and Japanese Patent Application Laid-Open No. 11-29903 disclose a snow melting structure using a thermal fluid, but the structure without using energy in consideration of environmental aspects. It is desired to remove the frozen ice and snow by a special device.

  An object of the present invention is to provide a railroad crossing board that can easily remove adhering ice and snow.

  Accordingly, the present invention provides a crushing structure for frozen ice and snow attached to a railroad crossing board, comprising a base laid adjacent to a rail, and an elastically deformable rubber paving board fixed to the surface of the base. The above problem was solved.

As the vehicle passes through the railroad crossing, the tire crosses the railroad crossing board. The weight of the vehicle acts on the railroad crossing board from the tire. At this time, the rubber paving plate is elastically deformed.
When frozen ice / snow adheres to the pavement board, a shearing force is generated in the frozen ice / snow between a portion receiving a load from the tire and the periphery thereof. When the elastic deformation of the pavement plate becomes large and the shearing force applied to the frozen ice and snow exceeds the allowable shear stress of ice, the frozen ice and snow cracks and breaks from a large mass to a small mass.

  It is preferable that the paving board has water repellency at least on the surface. In a state where no load is applied, the frozen ice and snow is in contact with the pavement board in a straight line when viewed in cross section. An elastically deformed paving board draws a curve when viewed in cross section. When the pavement board has water repellency on the surface, it adheres to ice and snow when it is elastically deformed under load. Thereby, the ice and snow crushed into a small lump easily peels from the pavement board.

It is preferable that the base has an upright wall at the outer edge, and the pavement plate is fixed to the base in contact with the inner surface of the upright wall.
Railroad crossings are repeatedly subjected to loads due to vehicle traffic. In cold regions, railroad crossing boards are also affected by temperature changes. When the pavement plate is made of rubber that is easily elastically deformed, permanent deformation or plastic deformation is likely to occur at high temperatures such as in summer. Therefore, the pavement plate that has been permanently deformed from the base may protrude from a predetermined portion in a planar and three-dimensional manner, thereby hindering the passage of railways, vehicles, and people.
When the pavement plate is in contact with the inner surface of the upright wall and is fixed to the base, the pavement plate is easily prevented from being deformed, and safety of passage of railways, vehicles, and people can be ensured.

It is preferable that the pavement plate has a structure including a rubber panel on the front surface side and a back side reinforcing panel fixed to the rubber panel and having higher rigidity than the rubber panel.
In the present invention, a rubber paving board that is easily elastically deformed is employed. On the other hand, if elastic deformation repeatedly occurs, the rubber pavement plate tends to be permanently deformed or plastically deformed, and it is desired to regulate the shape of the pavement plate. Therefore, it is easy to maintain the shape of the pavement plate for a long period of time by fixing the rubber panel to the highly rigid reinforcing panel to form the pavement plate.
Further, when a rubber panel that is easily elastically deformed is fixed to the base with a bolt or the like, deformation is caused in advance, and a planned amount of elastic deformation is reduced. By using the reinforcing panel, it is possible to fix the pavement plate to the base without deforming the rubber pavement plate.

Specifically, it is preferable to use a structure in which the base includes an insert embedded in the base, and the pavement plate is fixed between the reinforcing panel and the insert.
By doing so, when the pavement plate is fixed to the base using the bolt, a load for elastic deformation does not act on the rubber panel. Therefore, a large amount of elastic deformation due to the passage of the vehicle can be ensured, and the frozen ice and snow crushing effect and peeling effect can be easily exhibited.

  As described above, according to the present invention, by providing a rubber panel that is easily elastically deformed on the surface of the railroad crossing board on the base, the frozen ice and snow are crushed into small pieces using the load of the vehicle by passing the vehicle. be able to. Therefore, the frozen ice and snow can be removed without investing a lot of labor.

  Hereinafter, an embodiment of a fracture structure of frozen ice and snow according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a railroad crossing board. The railroad crossing board 10 is laid adjacent to the rail R between the rails and outside the rails. The railroad crossing board 10 includes a main body region A through which a person or a vehicle passes and an auxiliary region B located at an end of the region. The configuration of the railroad track is roughly determined, and by forming the components of the railroad crossing plate 10 into a fixed shape, the railroad crossing plate can be configured without sequentially designing according to the railroad crossing.

  The main body area A is composed of a plurality of basic modules 12. FIG. 2 is an exploded perspective view of a module constituting the railroad crossing board. The module 12 includes a resin base 14 and a paving board 16. The base 14 and the pavement plate 16 are fixed to each other using fastening means such as bolts. The railroad crossing board 10 itself is fixed to the sleepers by fastening means (not shown).

  FIG. 3 is a cross-sectional view of the base 14. Reference is now made to FIGS. The base 14 includes a through hole 18 for fixing to a sleeper on a railroad track and a recess 20 for storing the pavement board 16. A standing wall 22 is provided around the recess 20 except for the module adjacent side. But the standing wall 22 may be provided over the perimeter of each module. By this standing wall, the pavement plate 16 can be positioned, and abnormal variations of the pavement plate, permanent deformation or plastic deformation of the pavement plate 16 can be restrained.

  The base 14 also includes an insert 24 for securing the pavement board 16. FIG. 4 shows the insert 24 in detail. The insert 24 has a female screw hole. The insert 24 also has a rectangular bottom 26. The insert 24 is embedded in the base 14. The rectangular bottom 26 prevents the insert 24 from rotating and coming off.

A paving board 16 is fixed to the base 14. FIG. 5 is a cross-sectional view showing the pavement plate 16. The pavement board 16 includes a rubber panel 28 on the front surface side and a reinforcing panel 30 on the back surface side. The pavement plate 16 is stored in contact with the inner surface of the upright wall 22 in the recess 20 of the base 14. The surface of the pavement plate 16 stored in the recess 20 is flush with the top surface of the upright wall 22.
By doing so, the pavement plate 16 is positioned with respect to the base 14, and an abnormal variation of the pavement plate and deformation of the pavement plate can be prevented. In addition, since the surface of the pavement plate 16 is flush with the top surface of the upright wall 22, the pavement plate 16 is less likely to be elastically deformed when a person who is not as heavy as a vehicle passes, so that the passerby falls. It is possible to prevent anything.

The pavement plate 16 includes a rubber panel 28 and a reinforcing panel 30. The rubber panel 28 is a rubber material that is easily elastically deformed. The rubber panel 28 is, for example, SBR. The reinforcing panel 30 is made of rigid resin or metal. Many anti-slip grooves are formed on the surface of the rubber panel 28.
The rubber panel 28 and the reinforcing panel 30 are integrally formed. For example, the rubber panel 28 is baked on the reinforcing panel 30. Since the rubber panel 28 is integrally formed with the reinforcing panel 30, the rubber panel 28 that repeatedly undergoes elastic deformation is prevented from being plastically deformed over time.

The pavement plate 16 is fixed to the base 14 with bolts (not shown). FIG. 6 shows an enlarged plane and cross section of the pavement board 16. A through hole 32 is formed in the pavement plate 16 so as to align with the insert 24 of the base 14.
The through-hole 32 penetrates both the rubber panel 28 and the reinforcing panel 30, and the reinforcing panel 30 has a smaller diameter. A washer 34 is fixed to the surface side of the reinforcing panel 30 and is partially embedded in the rubber panel 28. The bolt extending through the through hole 32 is screwed into the insert 24 of the base 14. As a result, the washer 34 and the reinforcing panel 30 are fixed to the base 14. The rubber panel 28 is not deformed by fixing.

As shown in FIG. 7, when a vehicle passes through the railroad crossing plate 10, a vehicle load P acts on the pavement plate 16. This load acts on the pavement plate 16 from the vehicle tire. The pavement plate 16 sinks a rubber panel 28 that is easily elastically deformed under the load P of the vehicle.
When the frozen snow / snow S adheres to the railroad crossing board 10, when the rubber panel 28 sinks directly under the tire, a compressive force and a shearing force are applied to the frozen ice / snow between the tire and the periphery of the tire where no load is applied. Act. Of these, the frozen ice and snow are crushed into shear pieces S1, S2... Sn by a shearing force.

The perspective view of a part of railroad crossing board by this invention. The disassembled perspective view of the module which comprises a railroad crossing board. Sectional drawing of a base. The front and top view of an insert. Sectional drawing of a pavement board. The expansion plane and sectional drawing of a pavement board. Sectional drawing which shows operation | movement of the pavement board at the time of vehicle passage.

Explanation of symbols

A Main body area B Auxiliary area R Rail 10 Railroad crossing board 12 Basic module 14 Resin base 16 Pavement board 18 Through hole 20 Recess 22 Standing wall 24 Insert 26 Bottom 28 Rubber panel 30 Reinforcement panel 32 Through hole 34 Washer

Claims (5)

A crushing structure for frozen ice and snow adhering to a railroad crossing board, comprising: a base laid adjacent to a rail; and a rubber paving board that is fixed to the surface of the base and easily elastically deformed. The crushing structure according to claim 1, wherein the pavement plate has water repellency at least on a surface thereof. The crushing structure according to claim 1, wherein the base has a standing wall at an outer edge, and the paving plate is fixed to the base in contact with an inner surface of the standing wall. The said pavement board consists of a rubber panel of the surface side, and a back side reinforcement panel fixed to the said rubber panel and having higher rigidity than the said rubber panel. Fracture structure. The crushing structure according to claim 4, wherein the base includes an insert embedded in the base, and the paving plate is fixed between the reinforcing panel and the insert.

Images