JPH06306803A - Buckling prevention device of rail and molding method of buckling prevention metal fittings - Google Patents

Abstract

PURPOSE:To increase track bed transverse resistance force in a track provided with wooden sleepers. CONSTITUTION:A buckling prevention device consists of a pair of buckling prevention metal fittings 11, screw spikes 12 which fix the buckling prevention metal fittings on sleepers 20, and a cnnecting bolt 13 which connects the buckling prevention metal fittings. The buckling prevention metal fittings are formed integrally by a top face horizontal section 14 which is in contact with the top face of sleeper by one flat steel plate, a vertical section 15 which hangs vertically from the end of the top face horizontal section 14, and a pressure receive section 16 which rises from the lower end of the vertical section 15 and is bent vertically.

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 expanding and bending outward when the temperature rises and the rail expands outside the curve in a curved section of the track 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 lateral 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. 2 is attached to the end of the wood sleeper 2 with the bolt 3 penetrating in the horizontal direction, and the wide hanging part 4 of the buckling prevention metal fitting 1 is embedded in the ballast 5. , Some of which are designed to increase the lateral resistance of the track.

[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.

[0006]

Therefore, the present invention has been made in view of the above problems of the prior art, and even an existing wooden sleeper can be easily attached without removing the wooden sleeper. An object is to provide a buckling prevention device.

Therefore, firstly, the buckling prevention device comprises a pair of buckling prevention metal fittings which are installed across two sleepers which are adjacent to each other at the center of the gauge, and a screw spike which fixes the buckling prevention metal fittings to the sleepers. , The buckling prevention metal fittings are connected to each other, and the buckling prevention metal fittings contact the upper surface of the sleeper with an upper horizontal portion, and a hanging portion hanging from the end of the upper horizontal portion along the side surface of the sleeper and the hanging portion. It consists of a pressure receiving part that is bent vertically as it rises from the lower end of the part and extends toward the opposite sleeper.A screw hole for screwing a screw spike is bored in the upper horizontal part, and a connecting bolt is attached to the pressure receiving part. With a bolt insertion hole that is inserted,

Secondly, a screw hole is formed in the vicinity of one end of a flat steel plate having an appropriate length, and a long hole-shaped bolt insertion hole is formed in the vicinity of the other end, and then the upper horizontal portion is formed. The screw hole side is short, the bolt insertion hole side that is the pressure receiving part is long, and it is bent in a substantially U shape so as to form a hanging part having an appropriate length, and then the pressure receiving part side of the hanging part is outside. The pressure receiving part is vertically bent by 180 °, and the tip end is extended in the direction of the opposing sleepers to achieve the intended purpose.

[0009]

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 pair of buckling prevention metal fittings 11 and 11 installed across two adjacent wood sleepers 20 1 and 20 2 at the center portion of the gauge, and the buckling prevention metal fittings.
The screw spikes 12 for fixing 11 1 , 11 to the wood sleeper 20 and the connecting bolt 13 for connecting the pair of buckling prevention metal fittings 11 , 1 11 to each other.

The buckling prevention fitting 11 is integrally formed of a single flat steel plate having an appropriate length, and has an upper horizontal portion 14 to be brought into contact with the upper surface 21 of the wooden sleeper 20 and the upper horizontal portion 14.
Hanging part 15 along the side 22 of the wooden sleeper 20
And a pressure receiving portion 16 which is vertically bent so as to stand upright from the lower end of the hanging portion 15 and extends in the direction of the opposing wood sleeper 20 .

The upper horizontal portion 14 of the buckling prevention fitting 11 is provided with two screw holes 17, 17 and the pressure receiving plate 16 is provided with a long hole-like bolt insertion hole 18.

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

Next, a method of forming the buckling prevention fitting 11 will be described. First, a pair of screw holes 17, 17 are formed near one end of a flat steel plate having an appropriate length, and a long hole-shaped bolt insertion hole 18 is formed near the other end. (See (1) in Fig. 3)

Next, the screw holes 17 and 17 to be the upper horizontal portion.
The side is short, the side of the bolt insertion hole 18 that becomes the pressure receiving portion 16 is long, and it is bent in a substantially U-shape so as to form a hanging portion 15 having an appropriate length. (See (2) in Fig. 3)

After that, the pressure receiving portion 16 side of the hanging portion 15 is bent outward by 180 ° in a hairpin shape so that the pressure receiving portion 16 rises vertically, and its tip extends in the direction of the opposing tree sleeper 20. . (See (3) and (4) in Fig. 3)

When the buckling prevention metal fitting 11 is formed, the position of the pressure receiving portion 16 is lowered by the length of the hanging portion 15. Therefore, the length of the hanging portion 15 is adjusted according to the height of the ballast 40. By locating the pressure receiving portion 16 below the wooden sleeper 20 , the pressure receiving portion 16 can be completely embedded in the ballast 40, so that the buckling resistance can be efficiently secured.

Next, a method of installing the buckling prevention device 10 will be described. First, the ballast 40 on the track on the site where the buckling prevention device 10 is to be installed is excavated and moved in advance.

Next, the upper horizontal portion 14 of the buckling prevention metal fitting 11
The upper surface 21 of the wood sleepers 20 central abutted, place the hanging part 15 so as to press the side surface 22 of the wood sleepers 20, also adjacent wood sleepers 20, form a paired as the pressure receiving portion 16 to each other are joined Similarly, one buckling prevention metal fitting 11 is placed.

Next, the connecting bolt 13 is inserted through the bolt insertion hole 18 formed in the pressure-receiving portion 16 of the pair of anti-buckling fittings 11 that overlaps, and the nut 19 is screwed and fastened.
A pair of buckling prevention fittings 11 are integrated, and the buckling prevention fittings 11 1 and 11 are fixed to the corresponding wooden sleepers 20 1 and 20 2 by a screw spike 12, respectively.

FIGS. 4 and 5 show another embodiment of the present invention. A mounting plate 50 is installed so as to straddle between adjacent wooden sleepers 20 , and a pressure receiving plate fixed to the lower surface of the mounting plate 50. It is considered that the buckling prevention metal fitting 52 is configured with 51, but with this structure, the required lateral resistance cannot be obtained unless the height of the pressure receiving plate 51 is considerably increased, and the mounting plate 50 is also large. Since it is inevitable, it is not only heavy and difficult to carry, but also expensive, and there is also a problem that it cannot adapt to the length of the sleeper laying interval.

[0021]

As described above, according to the present invention, a pair of buckling-preventing metal fittings that bridge two sleepers that are adjacent to each other at the center of the gauge and a screw that fixes the buckling-preventing metal fittings to the sleepers. Spiky and connecting bolts that connect the buckling prevention metal fittings to each other, the buckling prevention metal fitting is an upper horizontal portion that abuts the upper surface of the sleeper, a hanging portion that hangs along the side surface of the sleeper from the end of the upper horizontal portion, It consists of a pressure receiving part that is bent vertically so that it rises from the lower end of the hanging part and extends in the direction of the opposing sleepers.A screw hole for screwing a screw spike is drilled in the upper horizontal part, and it is connected to the pressure receiving part. Since the bolt insertion hole for inserting the bolt is drilled, it can be attached to an existing wooden sleeper extremely easily. Therefore, the track lateral resistance can be increased.

Further, according to the present invention, the buckling prevention fitting is provided with a screw hole near one end of one flat steel plate having an appropriate length, and a long hole-shaped bolt insertion hole near the other end. After drilling, the screw hole side that is the upper horizontal part is short, the bolt insertion hole side that is the pressure receiving part is long, and it is bent in a substantially U shape so as to form a hanging part with an appropriate length. After that, the part of the hanging part near the pressure receiving part was bent outward by 180 °, the pressure receiving part was raised vertically, and the tip was formed so as to extend in the direction of the opposing sleepers, so processing is extremely simple. The material cost and processing cost can be provided at low cost.

Further, by making the bolt insertion hole a long hole, it is possible to easily cope with the situation where the intervals between the wooden sleepers are not constant.

Further, according to the present invention, by adjusting the length of the hanging portion according to the height of the ballast, the pressure receiving portion is located below the wooden sleepers and is completely buried in the ballast. Therefore, it has a great effect such that the buckling resistance can be efficiently secured.

[Brief description of drawings]

FIG. 1 is an enlarged perspective 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 explanatory view showing the order of forming the buckling prevention metal fittings.

FIG. 4 is a front view of a wooden sleeper showing a state in which another buckling prevention metal fitting according to the present invention is attached.

FIG. 5 is a perspective view showing a state of the buckling prevention metal member as seen from below.

FIG. 6 is a side view of a wooden sleeper showing a state in which a conventional buckling prevention device is attached.

FIG. 7 is a front view of the above.

[Explanation of reference numerals] 10 Anti-buckling device 11 Anti-buckling fitting 12 Screw spike 13 Connection bolt 14 Upper horizontal part 15 Hanging part 16 Pressure receiving part 17 Screw hole 18 Bolt insertion hole 20 Wood sleeper 30 Rail 40 Ballast

 ─────────────────────────────────────────────────── ─── Continuation of 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 (2)

[Claims] 1. A pair of buckling prevention metal fittings that are installed across two sleepers that are adjacent to each other at the center of the gauge, a screw spike that fixes the buckling prevention metal fittings to the sleepers, and the buckling prevention metal fittings are connected to each other. The buckling prevention metal fitting is composed of a connecting bolt, and the buckling prevention metal fitting vertically contacts the upper surface of the sleeper, the hanging part that hangs from the end of the upper horizontal part along the side surface of the sleeper and the lower end of the hanging part. The upper horizontal part has a screw hole for screwing a screw spike, and the pressure receiving part has a bolt insertion hole for inserting a connecting bolt. An anti-buckling device for the rail. 2. A screw which becomes an upper horizontal portion after a screw hole is formed near one end of a flat steel plate having an appropriate length and a long hole-shaped bolt insertion hole is formed near the other end. The hole side is short, the bolt insertion hole side that is the pressure receiving part is long, and it is bent in a substantially U shape so as to form a hanging part having an appropriate length, and then the pressure receiving part side of the hanging part is outward. A method for forming a buckling prevention metal fitting, characterized in that the pressure-receiving portion is bent 180 °, the pressure-receiving portion is vertically raised, and a tip end of the pressure-receiving portion is extended in an opposing sleeper direction.