JPH06240604A - Device for preventing buckling of rail - Google Patents

Abstract

PURPOSE:To prevent rails from buckling, by fastening a pressure-receiving plate having the same length as the interval of crossties or larger at the end of the wooden crosstie with fixtures having a slot at the center thereof and a generally cranked shape. CONSTITUTION:An almost crank-shaped fixture 12 is inserted into a slot bored at the center of the corner of a pressure-receiving plate 11 having the same length with the pitch of crossties or longer to assemble a buckling preventive device 10. For this pressure-receiving plate 11, a structural L-shaped rolled steel in the market may be used. The external side of the vertical part 14 of the pressure-receiving plate 11 in the buckling preventive device 10 is pressed at the end 21 of a wooden crosstie 20, where ballast 40 are removed, by the vertical part 18 of the fixture 12 so that the upperface of the lower horizontal part 19 of the fixture 12 is made to contact the lowerface of the horizontal part 15 of the pressure-receiving plate 11 and the lowerface of the upper horizontal part 17 of the fixture 12 is made to contact with the upperface 22 of the wooden crosstie 20 and fixed with screw spikes 13. After the buckling preventive device 10 is fitted, ballast 40 is placed again to cover the horizontal part 15 of the pressure-receiving plate 11 and the weight of ballast is loaded with. In this way, the rail 30 can be prevented from buckling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buckling of a rail which prevents the rail from being bent and bent when the temperature rises and the rail expands and bulges outward from the curve in a curve section of a ballast bed. In particular, the present invention relates to an orbital buckling prevention device using a wooden sleeper (wooden sleeper).

[0002]

2. Description of the Related Art Since rails expand and contract due to temperature changes, axial pressure is generated. Therefore, sleepers to which rails are fastened are buried and fixed in a ballast bed. In particular, in recent years, long rails, in which fixed-length rails are welded to make them seamless, have been widely adopted as means for reducing the damage of tracks and improving the riding comfort of trains.

[0003] In order to suppress the expansion and contraction action due to the long rail, a concrete sleeper (PC sleeper) having a large weight and securely fastened is used, and a required roadbed for a long rail in a sharp curve. In order to secure lateral resistance, various anti-buckling devices that prevent movement of sleepers in the roadbed are used.

On the other hand, it is the same that intensifying lateral roadbed resistance is an indispensable condition when installing long rails on the track of wooden sleepers. The buckling prevention metal fitting 1 as shown in FIG. 1 is attached to the end of the wood sleeper 2 by a bolt 3 which penetrates in the horizontal direction, and the wide vertical portion 4 of the buckling prevention metal fitting 1 is ballasted.
A part of the system that is embedded inside to increase the lateral resistance of the track is adopted.

[0005]

However, in the case where the buckling prevention metal fitting 1 as described above is attached to the end of the wooden sleeper 2 with the bolt 3, the horizontal bolt is attached to the existing wooden sleeper already laid. Since it is difficult to make a hole, a bolt hole is previously made at the end of the wood sleeper 2 when the sleeper is replaced, and a buckling prevention metal fitting 1 is attached to the old one. There is a problem that the sleeper 2 must be installed again after removing the sleeper.

Moreover, the weight of the sleepers is an important factor for the stability of the long rails, lightweight wooden sleepers are shunned in comparison with the PC sleepers, and it is common knowledge that the long rails are expensive but have the PC sleepers. The current situation is that long rails in the wood sleeper track have been postponed.

[0007]

The present invention has been made in view of the above-mentioned problems of the prior art. Even an existing wooden sleeper can be easily installed without removing it, and the wooden sleeper can be easily attached. An object is to provide a buckling prevention device that can increase the weight of sleepers.

Therefore, firstly, the buckling prevention device is provided with a vertical portion having a length substantially equal to or greater than the length of the sleeper interval, the outer surface of which is in contact with the end portion of the sleeper, and the outer side from the lower end of the vertical portion. And a horizontal portion extending in a L-shape, and a pressure receiving plate having a long hole-shaped through-groove through which the mounting metal fitting is formed at the center of the corner, and a mounting metal fitting for mounting the pressure receiving plate to the end of the sleeper. And a fixing means for fixing the mounting bracket to the sleeper,

Secondly, there is an L-shape having a vertical portion having a length substantially equal to or longer than the distance between the sleepers and having an outer surface abutting the end portion of the sleeper, and a horizontal portion extending outward from the lower end of the vertical portion. -Shaped pressure receiving plate, an upper horizontal portion that abuts the top surface of the sleeper, and an L-shaped mounting bracket formed by a vertical portion fixed to the inner surface of the vertical portion of the pressure receiving plate, and the mounting bracket is fixed to the sleeper It is intended to achieve the intended purpose by adopting a structure composed of the fixing means.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings. Reference numeral 10 denotes a buckling prevention device, which is a pressure receiving plate.
Mounting bracket 1 for mounting 11 and the pressure receiving plate 11 on the wood sleeper 20
2 and a screw spike 13 which is a fixing means for fixing the mounting bracket 12 to the wood sleeper 20 .

The pressure receiving plate 11 has a length that is at least approximately equal to the length of the sleeper interval, and the outer surface of the pressure receiving plate 11 has an end portion 2 of the wood sleeper 20.
1, a vertical portion 14 and a horizontal portion 15 that extends horizontally outward from the lower end of the vertical portion 14 are formed in an L shape, and have a long hole shape at the center of the corner to allow the fitting 12 to pass therethrough. The through groove 16 is formed by press working. still,
It is convenient to use a commercially available structural L-shaped rolled steel material for the pressure receiving plate 11 .

[0012] Mounting bracket 12 includes an upper horizontal portion 17 to abut the wooden sleepers 20 upper surface 22, a vertical portion 18 abuts the inner surface of the vertical portion 14 of the pressure receiving plate 11, the horizontal portion 1 of the pressure receiving plate 11
5 and a lower horizontal portion 19 that abuts the lower surface of the member 5, and is formed in a substantially crank shape.

In the figure, reference numeral 30 is a rail, and 40 is a ballast.

In order to mount the buckling prevention device 10 on the wood sleeper 20 , first, as shown in FIG. 4, the mounting bracket 12 is penetrated from the tip of the lower horizontal portion 19 thereof into the through groove 16 of the pressure receiving plate 11 to receive the pressure receiving plate. Incorporated in 11 .

Then, the vertical portion 18 of the mounting member 12 is pressed so that the outer surface of the vertical portion 14 of the pressure receiving plate 11 is pressed against the end portion 21 of the wooden sleeper 20 from which the ballast 40 has been removed. At the same time, the lower surface of the upper horizontal portion 17 of the mounting bracket 12 is brought into contact with the upper surface of the wood sleeper 20 .
At this time, since the load of the ballast 40 is transmitted to the sleeper 20, the upper surface of the lower horizontal portion 19 of the mounting bracket 12 is attached to the pressure receiving plate 11.
It is necessary to adjust the position of the pressure receiving plate 11 in the vertical direction so that the pressure receiving plate 11 contacts the lower surface of the horizontal portion 15.

After that, the mounting bracket 12 is fixed to the wooden sleeper 20 by the screw spike 13. After the work, the ballast 40 is returned and placed on the horizontal portion 15 of the pressure receiving plate 11 , and the load of the ballast 40 is applied to the pressure receiving plate 11 . Therefore, since the load is applied to the wood sleeper 20 via the mounting bracket 12 ,
The load on the wooden sleeper 20 increases. Further, upward movement of the pressure receiving plate 11, the upper end mounting member 1 of the vertical portion 14 of the receiving plate 11
It is prevented by contacting the lower surface of the upper horizontal portion 17 of the second .

FIG. 5 shows another embodiment of the present invention, in which the mounting bracket 12 'is formed in an L shape like the pressure receiving plate 11, and the vertical portion 18' of the pressure receiving plate 11 is welded. It is fixed to the vertical portion 14. In this case, like the pressure receiving plate 11 , it is convenient to use a commercially available structural L-shaped rolled steel material.

The buckling prevention device 10 may be arranged alternately at the left and right ends of the sleeper 20 as shown in FIG.
As shown in Fig. 8, they may be arranged alternately at the left and right ends of the sleepers 20 placed one by one, and further, may be arranged at both ends of all the sleepers as shown in Fig. 8, depending on the situation of the installation place. Can be placed in

[0019]

As described above, according to the present invention, a vertical portion having a length that is at least approximately equal to the length of the sleepers and whose outer surface abuts against the ends of the sleepers, and from the lower end of the vertical portions. A pressure receiving plate which is formed in an L-shape with an outwardly extending horizontal portion and has a long hole-shaped through groove formed at the center of a corner for penetrating a mounting member, and the pressure receiving plate is attached to the end of the sleeper. Since it is composed of the mounting bracket and the fixing means for fixing the mounting bracket to the sleeper, it can be easily mounted on an existing wooden sleeper.

Therefore, not only can the lateral roadbed lateral resistance be enhanced, but also the ballast load applied to the pressure receiving plate can be added to the wooden sleepers to increase the load of the wooden sleepers, so that compared to the PC sleeper track. Long rails can be implemented even on inexpensive wood sleeper tracks.

Further, in the case where the mounting member is formed in an L shape like the pressure receiving plate and the vertical portion thereof is fixed to the vertical portion of the pressure receiving plate, it is not necessary to provide a through groove in the pressure receiving plate.
Also, even if the upper end of the vertical portion of the pressure receiving plate does not abut on the lower surface of the upper horizontal portion of the mounting bracket, the pressure receiving plate can be prevented from moving upward, so the bottom of the sleeper does not have to be large. Since it is possible to increase the depth from, it is advantageous when it is desired to particularly increase the roadbed resistance value.

Further, by using a commercially available structural L-shaped rolled steel material for the pressure receiving plate and the mounting member of the second embodiment, the manufacturing is extremely simple and the number of parts is small, and the structure is simple and easy to assemble. Therefore, it has a great effect that it can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a side view of a wooden sleeper showing a state in which a buckling prevention device according to the present invention is attached.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged perspective view of the above.

FIG. 4 is an enlarged vertical sectional view showing an assembled state of the pressure receiving plate and the mounting bracket.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is a plan view of a track showing an arrangement example of a buckling prevention device according to the present invention.

FIG. 7 is a plan view of a track showing an arrangement example of a buckling prevention device according to the present invention.

FIG. 8 is a plan view of a track showing an arrangement example of a buckling prevention device according to the present invention.

FIG. 9 is a side view of a wooden sleeper showing a state in which a conventional buckling prevention device is attached.

FIG. 10 is a front view of the above.

[Explanation of reference numerals] 10 Anti-buckling device 11 Pressure receiving plate 12 Mounting bracket 12 'Mounting bracket 13 Screw spike 16 Through groove 20 Wood sleeper 40 Ballast

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeji Fukuda 7-26-11, Onodai, Sagamihara City, Kanagawa Prefecture (72) Keisuke Kirishi, 525 Higashi Taisei-cho, Omiya City, Saitama Prefecture

Claims (4)

[Claims] 1. A vertical portion having a length that is at least approximately equal to the length of the sleeper spacing and whose outer surface abuts the end of the sleeper,
A pressure receiving plate which is formed in an L shape with a horizontal portion extending outward from the lower end of the vertical portion, and in which a long hole-shaped through groove for penetrating a mounting member is formed in the center of the corner; A rail buckling prevention device comprising: a mounting bracket to be attached to the end of the sleeper; and a fixing means for fixing the mounting bracket to the sleeper. 2. A rail buckling prevention device according to claim 1, wherein a commercially available structural L-shaped rolled steel material is used for the pressure receiving plate. 3. The mounting bracket is formed in a substantially crank shape by an upper horizontal portion that abuts an upper surface of the sleeper, a vertical portion that abuts an inner surface of a vertical portion of the pressure receiving plate, and a lower horizontal portion that abuts a lower surface of the horizontal portion of the pressure receiving plate. The rail buckling prevention device according to claim 1, wherein the rail buckling prevention device is provided. 4. A vertical portion having a length that is at least approximately equal to the length of the sleeper interval and whose outer surface abuts the end of the sleeper,
An L-shaped pressure receiving plate that is formed in an L shape with a horizontal portion that extends outward from the lower end of the vertical portion, an upper horizontal portion that abuts the top surface of the sleeper, and a vertical portion that is fixed to the inner surface of the vertical portion of the pressure receiving plate. A rail buckling prevention device, comprising: a mounting bracket formed on the rail and fixing means for fixing the mounting bracket to the sleeper.