JPH078404U - Metal sleeper fastening structure - Google Patents

Abstract

(57) [Summary] [Purpose] The insulator of a metal sleeper should not be subjected to a large force based on the lateral pressure acting between the rail and the pressing leaf spring. [Structure] Lower edge 20 of insulator 18 and leaf spring 6
An insulator protection member 22 for distributing the force transmitted between the lower edge portion 20 of the insulator 18 and the end surface of the pressing portion 21 of the leaf spring 6 is provided between the pressing portion 21 and the pressing portion 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a 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. As this metal sleeper, there is one in which a rail is fixed to the sleeper by using a bolt / nut and a leaf spring. The leaf spring is made of a J-shaped metal material when viewed in the length direction of the rail, one end of which is configured to be able to press the flange of the rail, and the other end of which is formed shorter than one end so that it does not interfere with the rail. Is composed of.

In the fastening structure of the metal sleepers having such a configuration, it is necessary to insulate the rails from the sleepers. For this reason, an insulating track pad is installed between the sleepers and the rails, and an insulator made of synthetic resin or the like is installed between the leaf springs and the rail flanges. It The other end of the leaf spring comes into contact with the end of the insulator so that the insulator is prevented from lateral displacement.

[0004]

[Problems to be solved by the device]

 However, large lateral pressure acts on the rails, especially in curved track sections. Then, when such lateral pressure acts, the end of the insulator is pressed against the end surface of the other end of the leaf spring, and a large force is applied to the resin insulator, which easily causes damage. There is a point.

Therefore, the present invention aims to solve such a problem and prevent the insulator from being applied with such a large force.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has an insulating track pad interposed between a metal sleeper and a rail, and J-shaped leaf springs are provided on both sides of the rail when viewed in the length direction of the rail. Bolts and nuts for fastening the rail to the sleeper via the rail are arranged, one end of the leaf spring is configured to be capable of pressing the flange of the rail via an insulator, and the other end of the leaf spring is It is arranged so as to face the end of the insulator and distributes the force transmitted between the other end of the leaf spring and the end of the insulator between the end of the insulator and the other end of the leaf spring. It is configured such that an insulator protection member for causing the same is provided.

[0007]

[Action]

 According to this structure, the force transmitted between the end of the insulator and the other end of the leaf spring is dispersed by the insulator protection member, so that even if lateral pressure is applied to the rail, a large force is applied to the insulator. Is prevented.

[0008]

【Example】

 In FIGS. 1 and 2, reference numeral 1 denotes a sleeper, which is arranged on a track formed of ballast, crushed stone, or the like to support the rail 2. An insulating track pad 3 is interposed between the bottom of the rail 2 and the sleeper 1. The sleeper 1 is made of hollow cast iron, and the supporting portion 4 for supporting the rail 2 is formed lower than the side portions 5.

J-shaped leaf springs 6 are arranged on both sides of the rail 2 when viewed in the length direction of the rail 2. The leaf spring 6 has a hook portion 8 on one end side capable of pressing the flange 7 of the rail 2, and a vertical through hole portion 9 is formed on the side of the rail 2.

A bolt hole 10 is formed in the support portion 4 of the sleeper 1 so as to correspond to the through hole portion 9 of the leaf spring 6. Reference numeral 11 denotes a T-head bolt, the head of which engages with the bottom surface of the sleeper 1, and the threaded portion thereof projects upward through the bolt hole 10 and the through hole portion 9 of the leaf spring 6. A nut 12 is screwed onto the T-head bolt 11 above the leaf spring 6. 13 is a washer.

A vertical contact surface 14 is formed at the boundary between the side portion 5 of the sleeper 1 and the support portion 4. Between the contact surface 14 and the curved portion 15 of the leaf spring 6, there is a gauge A wedge-shaped spring pedestal 16 for adjustment is provided.

An insulator 18 is interposed between the hook portion 8 of the leaf spring 6 and the flange 7 of the rail 2. The insulator 18 is made of a hard resin material, and has an accommodating recess 19 for accommodating the hanging portion 8 on its upper surface, and a lower edge portion 20 covering the side edge of the flange of the rail 2 at its lower end portion.

A pressing portion 21 is formed on the other end side of the leaf spring 6, and the pressing portion 21 is configured such that its end surface faces the lower edge portion 20 of the insulator 18. An L-shaped plate-shaped insulator protection member 22 is provided between one plate portion and the other plate portion of the J-shaped plate spring 6. As described above, one side of the insulator protection member 22 is inserted into the leaf spring 6 and the T-head bolt 11 is passed through the through hole 23 to position the insulator protection member 22 and its position. Misalignment is prevented. The other side of the insulator protection member 22 is formed to have a larger area than the end surface of the pressing portion 21 of the leaf spring 6, and the lower edge portion 20 of the insulator 18 and the end surface of the pressing portion 21 of the leaf spring 6 are formed. It is configured to be sandwiched between and.

In such a structure, when the rail 2 is fastened to the sleeper 1, the hook portion 8 of the leaf spring 6 is applied to the flange 7 of the rail 2 via the insulator 18, and its pressing force is applied. The portion 21 is applied to the lower edge portion 20 of the insulator 18 via the protective member 22, and the T-head bolt 15 and the nut 16 are fastened. At the same time, the wedge-shaped spring pedestal 16 adjusts the track.

In the fastening state shown in the drawing, the insulating track pad 3 is interposed between the rail 2 and the sleeper 1, so that the insulating state between them is secured at this portion. Further, since the insulator 18 is interposed between the hooking portion 8 of the leaf spring 6 and the flange 7 of the rail 2, the insulation state between the rail 2 and the sleeper 1 is also secured in this portion. .

Since the protective member 22 is sandwiched between the lower edge portion 20 of the insulator 18 and the end surface of the pressing portion 21 of the leaf spring 6, the lateral displacement of the insulator 18 is reliably prevented. When lateral pressure is applied to the rail 2, the force transmitted between the lower edge portion 20 of the insulator 18 and the pressing portion 21 of the leaf spring 6 has a larger area than the end surface of the pressing portion 21 of the leaf spring 6. It is dispersed by the protective member 22. For this reason, it is prevented that a large force is locally applied to the lower edge portion 20 of the insulator 18, and the damage thereof is prevented.

[0017]

[Effect of device]

 As described above, according to the present invention, since the insulator protection member is provided between the other end of the leaf spring and the edge of the insulator to disperse the force transmitted therebetween, lateral pressure is applied to the rail. In this case, the insulator is prevented from being applied with a large force and causing damage.

[Brief description of drawings]

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

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

[Explanation of symbols]

 1 sleeper 2 rail 6 leaf spring 11 T-head bolt 18 insulator 20 lower edge 21 pressing portion 22 insulator protection member

Claims (1)

[Scope of utility model registration request] 1. An insulative track pad is interposed between a metal sleeper and a rail, and the rail is mounted on both sides of the rail via J-shaped leaf springs when viewed in the length direction of the rail. Bolts and nuts for fastening to sleepers are arranged,
One end of the leaf spring is configured to be able to press the flange of the rail via an insulator, and the other end of the leaf spring is
Dispersed between the other end of the leaf spring and the edge of the insulator, the force transmitted between the edge of the insulator and the other end of the leaf spring is arranged so as to face the end of the insulator. A metal sleeper fastening structure, characterized in that an insulator protection member is provided for the purpose.