JPH03119205A - Assembly sleeper - Google Patents

Abstract

PURPOSE:To reduce the size of a matrix by a method wherein a coupling pipe for a sleeper is inserted in each of the coupling holes of a pair of single sleepers, and lock rings engaged with first and second annular grooves formed in an inner and an outer peripheral surface and a lock bolt screwed in a female screw are provided. CONSTITUTION:A pair of single sleepers in a rectangle in cross section are arranged in a state to respectively support a pair of rails 1 on both sides, and a coupling hole 3 is formed in the wall surface on one side of each of the single sleepers to intercouple the coupling holes through a joining pipe 4. An expandable lock ring 6 formed in a one-division manner is arranged in a first annular groove 5 in the inner peripheral surface of the coupling hole 3. A lock bolt 8 is screwed in and out from a female thread part 7 formed through in the radial direction of the coupling hole 3 to energize the lock ring 6. A second annular groove 9 is formed in the outer peripheral surface of the joining pipe 4 of cast iron, and the rail 1 is supported on a ceiling surface through the medium of a tie pad 11. This constitution facilitates a work to intercouple the single sleeper and the joining pipe only through reduction of the size of the lock ring.

Description

[Detailed description of the invention] Industrial applications The present invention relates to assembled sleepers for laying rails.

BACKGROUND OF THE INVENTION Conventionally, sleepers have been provided to support two rails, spread the pressure of the wheels over a wide area and transmit it to the track bed, and maintain a constant track. When wooden sleepers are used, problems such as rotting, splitting, and enlargement of large needle holes occur, so in recent years, PC (prestressed concrete) sleepers and metal sleepers have been used.

Problems to be Solved by the Invention However, with conventional metal sleepers, the entire sleeper is cast in one mold, which requires a large mold, and there is a problem in that it takes time and effort to handle the mold and the cast sleeper. Ta.

The present invention solves the above-mentioned problems, and aims to provide an assembled sleeper in which each part of the sleeper can be cast.

Means for Solving the Problems In order to solve the above problems, the present invention provides a pair of single sleepers disposed to support each of a pair of left and right rails, and a connecting hole formed in one side wall surface of the single sleepers. A connecting pipe that is inserted to connect both single sleepers, and a second annular groove that is placed in a first annular groove formed on the inner peripheral surface of the connecting hole and formed on the outer peripheral surface of the connecting pipe. It has a structure that includes a lock ring that reduces the diameter and engages, and a lock bolt that is screwed into a female thread formed on a single sleeper and biases the lock ring in the radial direction to reduce the diameter. be.

Effect With the above configuration, each part of the single sleeper and the joint pipe can be cast separately, so the mold for casting each part can be made smaller, and the mold and the cast single sleeper and joint pipe can be made smaller. It becomes easy to handle. Furthermore, the single sleeper and the joint pipe can be connected by simply inserting the joint pipe into the joint hole of the single sleeper, tightening the lock bolt, and reducing the diameter of the lock ring, making the connection work easy.

EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In FIGS. 3 to 3, a pair of single sleepers 2 are arranged to support each of the left and right pair of rails 1, and the single sleepers 2 are formed into a cylindrical body with a rectangular cross section. A connecting hole 3 is formed in one side wall surface of the single sleeper 2, and both single sleepers 2 are connected by a connecting pipe 4 inserted into the connecting hole 3. A first annular groove 5 is provided on the inner peripheral surface of the connecting hole 3.
A lock ring 6 is formed in the first annular groove 5 and is disposed in a separate lock ring 6 which is expandable and contractable. Further, the single sleeper 2 is provided with a female threaded portion 7 that penetrates in the radial direction toward the inside of the connection hole 3, and a lock bolt 8 is screwed into the female threaded portion 7. This lock bolt 8 moves forward and backward when engaged with the female threaded portion 7, and biases the lock ring 6 in the radial direction. Further, a second annular groove 9 that engages with the lock ring 6 is formed on the outer peripheral surface of the coupling pipe 4 . The single sleeper 2 and the connecting pipe 4 are cast from cast iron, and both single sleepers 2 are arranged so as to enclose a part of the trackbed 10.

Each of the single sleepers 2 supports a rail 1 on its ceiling surface, and a tie butt 11 made of an insulating material is interposed between the ceiling surface of the single sleeper 2 and the rail 1.

Furthermore, a pair of sillage parts 12 are located on both sides of the rail 1 and are formed integrally with the single sleeper 2, and the rail 1 is made of insulating material by means of band roll clips 14 attached to holes 13 in the sillage parts 12. It is pressed toward the single sleeper 2 via the insulator 15.

Hereinafter, the effects of the above configuration will be explained.

The single sleepers 2 and the connecting pipe 4 are locked to each other via a lock ring 6, and the connecting pipe 4 maintains the distance between the single sleepers 2, that is, the gauge distance, against the lateral pressure applied to the rail 1. be done.

Since both single sleepers 2 are connected by the connecting pipe 4, the weight of the sleepers as a whole is reduced.

In addition, since the single sleeper 2 and the joint pipe 4 are separated and independent, each part can be cast separately, and by downsizing the mold for casting the single sleeper 2 and the joint pipe 4, the mold and casting The single sleeper 2 and the joint pipe 4 thus made can be easily handled. Furthermore, the single sleeper 2 and the connecting pipe 4 can be connected by simply inserting the connecting pipe 4 into the connecting hole 3 of the single sleeper 2, tightening the lock bolt 8, and reducing the diameter of the lock ring 6, which simplifies the connection work. It's easy.

Effects of the Invention As described above, according to the present invention, each part of the single sleeper and the joint pipe is separated and independent, so that it is easier to handle the single sleeper and the joint pipe that are molded and cast with the aim of reducing the size of the mold. can be made easier. In addition, the single sleeper and the joint pipe can be connected by simply inserting the joint pipe into the connection hole of the single sleeper, tightening the lock bolt, and reducing the diameter of the lock ring, making the connection work easier. can.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an overall configuration diagram showing one embodiment of the present invention, Fig. 2 is a plan view taken along arrow A-A of the embodiment, and Fig. 3 is a B--B of the embodiment.
It is a side view as viewed from arrow B. 1...Rail, 2...Single sleeper, 3...Connection hole, 4
... Combined pipe, 5... First annular groove, 6... Lock ring, 8... Lock bolt, 9... Second annular groove.

Claims (1)

[Claims] 1. A pair of single sleepers arranged to support each of the left and right pair of rails, a connecting pipe that is inserted into a connecting hole formed on one side wall of the single sleeper to connect both single sleepers, and a connecting hole. a lock ring which is disposed in a first annular groove formed on the inner circumferential surface of the coupling pipe and engages with the second annular groove formed on the outer circumferential surface of the coupling pipe with a reduced diameter; An assembled sleeper characterized by comprising a lock bolt that is screwed into a female threaded portion and biases a lock ring in a radial direction to reduce its diameter.