JPH078403U - Rail connection structure of metal sleepers - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rail fastening structure of a metal sleeper that can be constructed at low cost. [Structure] An insulating track pad 13 is laid on the upper surface of a metal sleeper 11, and a rail 12 is further laid on the track pad 13. Metal retainers 16 for fastening the rails 12 to the sleepers 11 are disposed on both sides of the rail 12, and an insulator 19 is disposed between the retainers 16 and the rail 12. [Effect] The volume of the expensive insulator 19 can be significantly reduced, and an inexpensive rail fastening structure can be obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rail fastening structure for a metal sleeper.

[0002]

[Prior art]

 Conventionally, railroad tracks have a roadbed made of gravel, crushed stone, etc. on the roadbed, sleepers lined up on the roadbed, and a pair of rails laid on it. In recent years, metal sleepers have been proposed in place of the wooden sleepers because they have problems such as decay and splitting.

In a metal sleeper, it is necessary to insulate the rail from the sleeper. Therefore, a so-called nabla type rail fastening structure has been conventionally proposed. In this nabler type rail fastening structure, as shown in FIG. 3, an insulating track pad 3 is sandwiched between the sleeper 1 and the rail 2, and the rails 1 are mounted on both sides of the rail 1. Arrange a presser 4 made of an insulating block for fastening to the bar 2. Reference numeral 5 is a metal fitting, and 6 is a nut for fastening. Reference numeral 7 is a wedge member for adjusting the gauge, which is driven between the retainer 4 and the step portion 8 of the sleeper 1. A hard resin such as nylon is generally used for the retainer 4.

[0004]

[Problems to be solved by the device]

 However, such a resin that is insulative and has mechanical strength higher than a certain level necessary for fastening the rail is expensive, and if it is formed into a block with a required volume, the cost is high. There is a problem that it becomes a structure.

Therefore, an object of the present invention is to solve the above problems and provide a rail sleeper structure of a metal sleeper that can be constructed at low cost.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention lays an insulative track pad on the upper surface of a metal sleeper, lays rails on the track pad, and both sides of the rail. In addition, a metal retainer for fastening the rail to the sleeper is placed, and an insulator is placed between the retainer and the rail.

[0007]

[Action]

 According to such a configuration, the presser itself is made of metal such as inexpensive cast iron, and only the insulator interposed between the presser and the rail is made of an insulating material such as resin. Since the volume of the insulator can be made significantly smaller than that of the tool, a cheap rail fastening structure can be obtained.

[0008]

【Example】

 In FIGS. 1 and 2, reference numeral 11 denotes a metal sleeper, which is made of ductile cast iron and has a hollow shape. This sleeper 11 is arranged on a ballast formed of ballast, crushed stone, etc., and supports the rail 12. An insulating track pad 13 made of synthetic rubber or the like is interposed between the bottom of the rail 12 and the upper part of the sleeper 11. The track pad 13 is formed to have a length corresponding to the width of the sleeper 11. In the sleeper 11, the support portion 14 that supports the rail 12 is formed lower than the side portion 15.

Pressers 16 are arranged on both sides of the rail 12, respectively. The retainer 16 is made of cast iron or the like and has a hook portion 18 capable of pressing the flange 17 of the rail 12. An insulator 19 formed in a J shape so as to cover the surface and the end surface of the flange 17 is interposed between the hanging portion 18 and the flange 17. The insulator 19 is made of a hard resin such as nylon, and its bottom 20 is in contact with the surface of the track pad 13 in a sealed state. In addition, the retainer 16 includes a through-hole portion 21 in a vertical direction on the side of the rail 12, a thick portion 22 for forming the through-hole portion 21, and a side from the thick portion 22 to the sleeper 11 side. It has a tail portion 23 protruding toward the portion 15.

The support portion 14 of the sleeper 11 is formed with an elongated bolt hole 24 corresponding to the through hole portion 21 of the retainer 16. Reference numeral 25 denotes a T-head bolt, the head of which engages with the bottom surface of the sleeper 1 and which passes through the bolt hole 24 and the through hole portion 21 of the retainer 16 so that the screw portion thereof protrudes above the retainer 16. ing. A nut 26 is screwed onto the protruding portion of the T-head bolt 25. 27 is a washer.

A vertical step 28 is formed at the boundary between the side portion 15 of the sleeper 11 and the support portion 14, and between the step portion 28 and the thick-walled portion 22 of the retainer 16. A wedge material 29 for adjusting the gauge is driven in.

In such a configuration, when the rail 12 is laid, the sleeper 11 is placed at a predetermined location, then the track pad 13 is laid on the upper surface of the support portion 14, and the rail 12 is placed thereon.

When the rail 12 is fastened to the sleeper 11, the hook portion 18 of the presser 16 is applied to the flange 17 of the rail 12 via the insulator 19, and the tail portion 23 thereof is placed on the wedge member 29. And tighten the T-head bolt 25 and the nut 26.

In the fastening state shown in the figure, since the insulating track pad 13 is interposed between the rail 12 and the sleeper 11, the insulating state between the rail 12 and the sleeper 11 is secured at this portion. Moreover, since the insulator 19 is interposed between the retainer 16 and the flange 17 of the rail 12, the insulating state between the rail 12 and the sleeper 11 is secured also in this portion. Further, since the bottom portion 20 of the insulator 19 is pressed against the track pad 13 by the presser 16 and a sealing state is maintained between the two, moisture is soaked toward the rail 12 from the gap between the two and the insulation is deteriorated. Is prevented from occurring.

As described above, the insulation state between the retainer 16 and the rail 12 can be secured only by the small-sized insulator 19, so that it is not necessary to use an expensive large-sized insulating block as in the past, and it is inexpensive. Since the retainer 16 can be made of cast iron or the like, the rail fastening structure can be realized at low cost.

[0016]

[Effect of device]

 As described above, according to the present invention, the metal retainers for fastening the rail to the sleeper are arranged on both sides of the rail, and the insulator is disposed between the retainer and the rail. The tool itself can be made of inexpensive cast iron, etc., and by only using the insulating material such as resin that is interposed between the holding tool and the rail, the volume of the insulator can be significantly increased compared to the holding tool. The size of the rail can be reduced and an inexpensive rail fastening structure can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing a rail fastening structure for a metal sleeper according to an embodiment of the present invention.

FIG. 2 is a sectional view of a portion shown in FIG.

FIG. 3 is a cross-sectional view showing a conventional rail fastening structure for a metal sleeper.

[Explanation of symbols]

 11 sleepers 12 rails 13 track pads 16 retainers 19 insulators

Claims (1)

[Scope of utility model registration request] 1. An insulating track pad is laid on the upper surface of a metal sleeper, and a rail is laid on the track pad.
The rail fastening of the metal sleeper is characterized in that metal retainers for fastening the rail to the sleeper are arranged on both sides of the rail, and an insulator is disposed between the retainer and the rail. Construction.