JP2582345B2 - Rail buckling prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail buckling prevention device, and more particularly to a rail buckling prevention device used for concrete sleepers.

[0002]

2. Description of the Related Art In a long rail on a sharp curve, the cross-sectional shape of a concrete sleeper and the excess of a ballast ballast and the required lateral resistance of a ballast only by compaction, that is, the movement resistance in a direction perpendicular to the rail, are obtained. There are cases where the value cannot be secured. In this case, there is a possibility that the rails will buckle and the safe operation of the train will be impaired.

[0003] For this reason, conventionally, a method has been adopted in which a metal fitting or the like is attached to a concrete sleeper to provide a projection, thereby making it difficult for the sleeper to move in the trackbed, thereby increasing the lateral resistance of the trackbed.

[0005] For example, as shown in FIG. 5, a gate type having wing pieces 2 and 2 fixed to both sides thereof at right angles to an appropriate position of the sleeper 1 and fitting holes (not shown) provided at both ends. Device for preventing buckling in a track which is fastened by inserting a wedge rod 4 having a front end portion bent upward and a rear end portion bent downward into a fitting hole of the fitting body 3. [Utility model registration No. 10747
No. 72 (see Japanese Utility Model Publication No. 47-11845)]. In the figure, reference numeral 5 denotes a rail, and 6 denotes a ballast ballast.

However, in these conventional buckling prevention devices, as described above, the fitting body 3 is fitted so as to be in close contact with the sleeper 1, so that there is a considerable manufacturing error in the cross-sectional shape. It is difficult to manufacture the fitting 3 that matches the sleeper 1, so it is extremely difficult to securely and firmly attach the fitting 3 to the sleeper 1.

In order to maintain a required lateral resistance value,
Since it is common to attach anti-buckling devices to all sleepers in a sharp curve, using an expensive anti-buckling device with a complicated structure as in the past increases equipment costs and other problems. is there.

As a solution to this problem, the present inventors, as shown in FIG.
A pair of anti-buckling plates 12 formed in a substantially L-shaped plane with a contact portion 12 a contacting the side surface of the first wing 1 and a wing portion 12 b extending in a direction perpendicular to the sleeper 11 are arranged via a packing 13. The lower ends of the pair of buckling prevention plates 12 are connected by a connecting member 14 passing through the lower surface of the sleeper 11, and the upper ends of the pair of buckling prevention plates 12 are connected to bolts 15 passing through the upper surface of the sleeper 11. A rail buckling prevention device which is fixed by a nut 16 screwed to the tip of the bolt 15 has been proposed. 17 is a ballast ballast. [See JP-A-6-146201]

[0008]

As a result, the above-mentioned conventional problems can be solved and a powerful anti-buckling device which does not compete with the tamping tool of the multiple tie tamper has been put to practical use. In the installation of the tie, it is necessary to dig down the ballast 17 at the center of the sleeper 11 to penetrate the connecting member 14, and due to human power, a new problem arises that the construction cost increases and the working speed is restricted. Was.

Further, according to an experiment for measuring the lateral resistance of the roadbed using this buckling prevention device, the connecting member 14 penetrating the lower surface of the sleeper 11 is better than the buckling prevention plate 12 attached to both sides of the sleeper. It has been found that the effect on the lateral resistance of the track is large.

[0010]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to an improved buckling prevention device without any loss of advantage.
Another object of the present invention is to provide a buckling prevention device which is easy to install and can further increase the lateral resistance of the roadbed. The buckling prevention device main body includes a pair of mounting brackets for mounting the buckling prevention device main body to the crossties, a connecting tool for connecting the pair of mounting metal fittings, and a packing interposed between the pair of mounting hardwares. A horizontal portion that contacts and a vertical portion that hangs down from the outer edge of the horizontal portion is formed in a substantially inverted L-shape, and the vertical portion is provided with mounting means for mounting the lower end of the mounting bracket, and at the lower end of the mounting bracket. Is characterized in that a mounting means corresponding to the mounting means is provided, and a wing portion extending in the center direction of the sleeper is formed at an outer edge of an upper portion of the mounting bracket.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. 21 is a buckling preventing apparatus main body which is disposed both end portions of the lower surface 22a of the sleepers 22, the lower surface of the sleepers 22 2
A horizontal portion 21a abutting on 2a and a vertical portion 21b hanging down from the outer edge of the horizontal portion 21a are formed in a substantially inverted L-shape.

[0012] horizontal portion 21a of the buckling preventing apparatus main body 21 has a width and lateral width substantially the same lower surface 22a of the sleepers 22, and its depth can be stably fixed in contact with the lower surface 22a of the sleepers 22 It has a width of the order.

The vertical portion 21b of the buckling prevention device main body 21
Is buried in a ballast (not shown) and has a height enough to withstand the lateral resistance of the ballast, and a pair of engagement grooves which are opened downward in the vertical part 21b. 2
3 are formed at intervals smaller than the width of the lower surface 22 a of the sleeper 22 .

[0024] Reference numerals 24 , 24 denote a pair of mounting brackets, the length of which is formed longer than the height of the sleeper 22 , and the upright bolt 2 that engages with the engaging grooves 23, 23 at the lower end inside.
5, 25 are fixed. Also, the mounting brackets 24 , 24
Wings 24a, 24a extending along the center direction of the sleeper 22 are formed on the outer edge of the upper end of the sleeper 22 , and a connecting member 27 is provided at a portion of the wings 24a, 24a protruding from the upper surface 22b of the sleeper 22.
Through holes 26, 26 penetrating through the bolts 28, 28.

Reference numeral 27 denotes a connecting tool, and two bolts 2
Coil spring 2 for connecting the bolts 28, 28 with the bolts 28, 28
9 and nuts 30, 30. Incidentally, a hexagonal bolt 31 may be used in place of the bolt 28 and the nut 30. (See Fig. 3)

Reference numeral 32 denotes a cushioning packing interposed between the pair of mounting brackets 24 , 24 , formed of a resin such as rubber, and has flanges 33 at both ends so as to be fitted to the upper surface 22 b of the sleeper 22 . 33 are formed, and fitting grooves 34, 34 for fitting the inner edges of the mounting brackets 24 , 24 are formed on the outer edge.

Next, a method of mounting the buckling prevention device will be described. First, the ballast at the end of the sleeper 22 is removed in advance by a mechanical operation such as a backhoe, and then the ballast at the lower surface 22a at the end of the sleeper 22 is broken down and placed. On the other hand, the tips of the bolts 28, 28 are screwed into the coil spring 29 from the left and right, respectively, to be integrated, and the base ends of the bolts 28, 28 are attached to the mounting brackets 24 ,
24 through holes 26, 26 and nuts 30, 30
And temporarily fix them.

After that, the wings 24 of the mounting brackets 24 , 24
a, 24a, and a packing 32 interposed therebetween, and upright bolts 25, 25 fixed to the mounting brackets 24 , 24.
From to engage the engaging grooves 23, 23 of the buckling preventing apparatus main body 21, to insert the horizontal portion 21a of the buckling preventing apparatus main body 21 to the lower surface 22a of the sleepers 22 ends.

Next, the mounting members 24 , 24 are pulled up to bring the horizontal portion 21a of the buckling prevention device body 21 into contact with the lower surface 22a of the end of the sleeper 22 , and the packing 32 is fitted to the upper surface 22b of the sleeper 22. After the nuts 30 and 30 are tightened and fixed, the ballast is returned.

[0020]

As described above, according to the present invention, a buckling prevention device main body disposed at both lower end portions of the sleeper, a pair of mounting brackets for mounting the buckling prevention device main body to the sleeper, A horizontal portion that abuts the lower surface of the sleeper with the buckling prevention device main body, and a vertical portion that hangs down from the outer edge of the horizontal portion. In the vertical portion, mounting means for mounting the lower end of the mounting bracket is provided, and at the lower end of the mounting bracket, mounted means corresponding to the mounting means is provided, and an upper portion of the mounting bracket is provided. Since the buckling prevention device main body having a structure in which the wing portion extending in the center direction of the sleeper is formed at the outer edge portion is located on the lower surface of the sleeper, the buckling preventing effect can be further enhanced.

Further, according to the present invention, the interval between the pair of mounting brackets is arranged to be smaller than the width of the lower surface of the sleeper,
Connect the connector with two bolts and a coil spring and nut, or two
Since the connector is formed by the hexagonal bolt and the coil spring, the connecting tool fits within the width of the lower surface of the sleeper, so that a positional conflict with the tamping tool can be avoided.

Further, according to the present invention, when mounting the buckling prevention device, the ballast at the end of the sleeper can be removed by a mechanical operation such as a backhoe, so that the operation is facilitated. The efficiency was improved.

Further, according to the present invention, since the fitting groove for fitting the inner edge of the mounting bracket is formed in the packing interposed between the pair of mounting brackets, the positioning of the mounting bracket is facilitated.

[Brief description of the drawings]

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

FIG. 2 is an enlarged perspective view showing an engagement state between a buckling prevention device main body and a mounting bracket.

FIG. 3 is an enlarged vertical cross-sectional view of a coupling tool.

FIG. 4 is an enlarged perspective view of a packing.

FIG. 5 is a side view showing a state in which a conventional buckling prevention device is attached to a sleeper.

FIG. 6 is a perspective view showing a state in which the buckling prevention device according to the present invention is attached to a sleeper.

[Description of Signs] 21 Buckling Prevention Device Main Body 22 Sleepers 23 Engagement Grooves 24 Mounting Brackets 24a Wings 25 Standing Bolts 26 Through Holes 27 Connecting Tools 28 Bolts 29 Coil Springs 30 Nuts 31 Hex Bolts 32 Packing 33 Flange 34 Fitting Grooves

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Keisuke Kirikiki 525 Higashi-Dainicho, Omiya-shi, Saitama

Claims (6)

(57) [Claims] 1. A buckling prevention device main body disposed at both ends of a lower surface of a sleeper, a pair of mounting hardware for mounting the buckling prevention device main body to a sleeper, a connecting tool for connecting the pair of mounting hardware, and a pair of mounting hardware. The buckling prevention device main body is formed in a substantially inverted L-shape with a horizontal portion abutting on the lower surface of the sleeper and a vertical portion hanging down from the horizontal portion outer edge,
Attachment means for attaching the lower end of the mounting bracket is provided at the vertical portion, and mounted means corresponding to the mounting means is provided at the lower end of the mounting bracket, and a sleeper is provided at the outer edge of the upper part of the mounting bracket. A buckling prevention device for a rail, wherein a wing portion extending in a central direction is formed. 2. A pair of engagement grooves as attachment means are formed in a vertical portion of the buckling prevention device main body so as to open downward at an interval smaller than the width of the lower surface of the sleeper, and are formed inside a lower end of the attachment fitting. 2. The rail buckling prevention device according to claim 1, wherein a vertical bolt as a mounting means is fixed. 3. A wing portion of the mounting bracket is adapted to abut against a side surface of the sleeper via a packing, and an upper end thereof protrudes from an upper surface of the sleeper, and a through hole penetrating the connecting tool is formed in the portion. The rail buckling prevention device according to claim 1, wherein the rail buckling prevention device is provided. 4. A connecting tool for connecting a pair of mounting fittings includes two bolts, a coil spring for connecting the tips of the two bolts between the wings of the mounting fitting, and a piercing on the wings of the mounting fitting. The buckling prevention device for a rail according to claim 1, further comprising a nut screwed into a base end of a bolt penetrating the provided through hole. 5. A connecting tool for connecting a pair of mounting brackets includes two hexagon bolts penetrating through holes formed in the wings of the mounting bracket, and the two hexagon bolts between the wings of the mounting bracket. The rail buckling prevention device according to claim 1, comprising a coil spring connecting the ends of the bolts. 6. The rail buckling prevention device according to claim 1, wherein a fitting groove for fitting an inner edge portion of the mounting bracket is formed in a packing interposed between the pair of mounting brackets. .