JPS6040401A - Rail laying method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a long rail laying method suitable for laying long rails in winter.

Currently, all long rails installed in the winter are being reconfigured in the spring.

Generally, the stress that accumulates inside the rail due to the rise and fall of temperature after the rail is installed is expressed as the total axial pressure. Axial pressure is a pressure that increases or decreases in proportion to the rise and fall of temperature, acting in the direction of elongation when the temperature rises and in the direction of contraction when it falls, and the unit is 1 () ton.
Expressed as For example, in a 60° rail (a long rail with a load of 60 kg per 1 m), an axial pressure of approximately 1.7 t is generated per 1°C of temperature change, and the same long rail that was laid when the temperature was 0°C in winter was
At 5°C, a very large axial pressure of about 40 or more (1.7 x 25) will accumulate. This axial pressure causes bending and cracking of the 7-rule.

In order to remove the above-mentioned axial pressure, all long rails currently installed in the winter are unfastened in the spring, removed from the floorboard, placed on rollers, and left for a predetermined period of time. The process involves placing the concrete in a free state) at a predetermined temperature (for example, 25°C), and then re-laying it onto the floorboard.

The above-mentioned work is called rail setting change, and the same setting change is considered to be one of the labor-intensive tasks that even the middle class of people working on various types of rail maintenance work is responsible for, and its economic burden is enormous.

Therefore, the present invention provides a V-ru installation method that makes it possible to fundamentally overcome the current situation as described above by employing extremely simple means and methods described below. That is,
The present invention provides a rail laying method that completely eliminates the need for the above-mentioned setting changes, which have been deemed indispensable as work contents after rail laying. .

Implementation of the present invention requires the use of a special rail tensioning machine as described below. The rail tensioning machine consists of a first clamp unit 2A equipped with the purpose of grasping the end of the planned laying O/grail IX, and a second clamp unit 2A equipped with the purpose of grasping the already laid rail IY adjacent to the planned long rail IX. Insert the push/pull unit 2B.

Both the first and second clap units 2A, 213 have machine stands 4, 5 provided to straddle the rails, and are f:J bodies.

The rail machine base 4.5 has sole housing openings 6 and 7 on the bottom of both machine bases for straddling the J2 rail.

The 4.5 VC of each machine is opened [ ] and the rail accommodation opening 6
It is equipped with all Norinters 8 and 9 for V-lucranops that operate in the direction perpendicular to the rails IX and IY that can be accommodated at 7 degrees.

The rams of the rail clamp/s/tars 8 and 9 are moved forward in the direction perpendicular to the rail, and the V inside the storage opening 6.7 is moved.
chuck 10.11 VC and chuck 12.13 with the side of the rail oriented toward the chuck 10.11 and lJ, placed at the tip of the ram;
Clap the sole abdomen and other parts at the end of the mouth/grail IX where the first clap unit 2A'5 is planned to be installed, and then attach the second clap unit 2A'5.
-2. Fix I/2B integrally to the end B11 of the already installed rail 1, Y (existing long rail or expansion joint rail).

Each of the chucks 10 to 13d/Rintarano/or rail is fixedly attached to or removably provided on the inner wall of the rail housing opening. In addition, there is a second clamp unit for clamping the existing rail, and a sole tensioning unit that operates in parallel with the rail is installed on the back of the 1/2B machine 5.
Two links 14 are provided on the left and right sides of the 7-ring.
From 4, insert the continuous rod 15i Isodai 5 which is integrated with the same glue/tarram and extend it to 17 rows (-) with the rail, and insert the entire end of it into the first clamp Yugo and the machine base 4 of 1-2A. Put a protrusion 1ffa on the rear surface 1 (11), screw 1-16 onto the protruding end, and use this to function as a collar. /linda 1
4, the connecting rod 15 is pulled toward the second clamp unit 12 and 2B, and the connecting rod 15 uses the medium to draw the first clamp unit 1, 2, 1, and 2A toward the second clamp unit 2B. As a result, a tensile force is applied to the entire clasp/grail IX of the second cranoscope 2B, causing it to extend.

'' - Note: Since the linters 8 and 9 for rail tensioning and the linters 14 for tensioning the rails operate in directions perpendicular to each other, it is natural that they must be arranged so that they do not interfere with each other.

Drawing il'iL Two clamps 14 and two consecutive strikes 1
5 are spaced apart from the rails at equal intervals, and the machine bases 4 and 5 are inserted into the second crannops 22 and 2A and 2B, respectively.
A small chamber 17 is provided inside the connecting rod 15 to accommodate small-sized linter 8 and 9 for Krafugu, and all of the linter 8 and 9 are accommodated in this chamber. The configuration supports the following.

As described above, the present invention provides a rail laying method that completely eliminates the need for the rail setting change work conventionally performed in the spring when long rails IX are laid in the winter.

As mentioned above, if all the rails are laid at 0°C in winter, then in spring 2
The amount of axial pressure accumulated at 5°C can be easily calculated by multiplying the temperature rise by the axial pressure of the long rail IX to be installed.

In this way, first, all predicted values for the rise in hot water temperature are determined, and from this, the IXO axial pressure of the same hole is calculated.

Next, as shown in Figures 1 and 2, the Long Knoll IX to be laid is placed on the predetermined floor plate, and A
In addition to straddling the 1st Cranopko-2 1-2A of Il.
Install the second clap unit 2B on the end of the already installed rail ■Y.
All straddles, each club/buko-ni.

Activate the clamp/links 8 and 9 of 1, 2A, and 2B, respectively, to clamp each rail end, and attach each unit 71.
・Integrate 2A, 2B and rails X and IY, respectively.

Next, 2nd Cranoguni, 1-28 7-le Hikigawa/su/
The long-knoll 1. Apply tensile force to X! I can do it. In other words, 2nd Cla/Guyuni, 1.213 is EX fastened to the floorboard, and V- laid.
Since it is clamped, it does not move, and the first clamp unit,
Only the rail 2A and the end portion of the rail IY clamped thereto are pulled, and are able to elongate in response to the tension. The elongation occurs mostly at the rail ends.

Thus, the value of the tensile force is given by the calculated axial pressure value. For example, in the above-mentioned 60, the rail is 0°G in winter.
When installed in the spring, it generates an axial pressure of approximately 40 t at 25°C. A tensile force equivalent to this 40t axial pressure is applied before the rail is laid and on the rail-laying roadbed to stretch the sole end, and the V-ru is immediately laid under this stretching (rail fastening to the floorboard). This is what we do.

As the first embodiment, Fig. 1 shows the Long Knoll IX with a floor plate (
(not shown), without tightening the entire length, use two sets of rail tensioners to apply a tensile force equivalent to the expected axial pressure to both ends of the rail, stretch it, and then lay it on top of the rail. This shows the case when

In addition, as a second embodiment, Fig. 2 shows one end of 0gunru IX fastened to the track bed and fixed (the fixed end is shown with diagonal lines).
Then, with the other end in a free state, use the rail tensioner to apply a tensile force equivalent to the expected axial pressure to the other end to extend it, and under this extension, immediately lay it (the entire length of the rail including the other end side). This shows the case where the contract is concluded.

In any case, the end of the rail should be fastened to the floorboard (sleepers, etc.) while the rail tensioner is applying tension to the rail, and then the end of the rail should be fastened to the center of the rail. is good. It should be noted that the rail fastening means is well known, so a description thereof will be omitted.

By applying the extremely simple means and methods described above, the present invention can completely eliminate the need for spring setting changes for rails laid in the winter, which were previously considered indispensable. This system can fundamentally eliminate problems such as the economic burden and restrictions on vehicle operation, as well as rail deformation and cracking that occur before setting changes, and the resulting lack of safety. And its practical benefits are immeasurable.

Furthermore, the method of carrying out the present invention is extremely easy and can be put into practical use immediately by applying a simple device such as the above-mentioned tensioning machine. Figures 1 and 2 show the principle; in reality, an expansion joint rail is interposed between the rails indicated by R and P2, and in that case, the VC and the second crannog unit 2B grip the joint rail. That will happen.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining the principle of the rail laying method (first embodiment) according to the invention, and is a diagram illustrating the rail tension state, and FIG. 2 is a diagram for explaining the second embodiment. 3 and subsequent figures are side views showing the rail tensioning machine used in carrying out the present invention in a rail straddling condition. FIG. 4 is a plan view of the same, and FIG. The second part of the tensioning machine
Clamp/Puuni, back view, Figure 6 shows the 1st clamp unit,
. FIG. IX Planned installation a knob rail, IY Existing rail, 2
A 1st clamp unit, 2B 2nd clamp unit,
4.5 Machine base, 6.7 Rail accommodation port, 8.
9- Inlinter for rail clamp, 14 Inlinter for rail tension.

Claims (1)

[Claims] Calculate the rail axial pressure from the predicted temperature rise after rail installation,
A rail laying method characterized by applying a tensile force equivalent to the axial pressure from one end or both ends of the rail to extend the rail, and immediately laying the rail under the elongation.