JP4856449B2 - Tie plate wear prevention rail fastening device - Google Patents

Description

  The present invention relates to a rail fastening device for fastening a rail to a track slab or a concrete sleeper.

Conventionally, in railway tracks using supports such as track slabs and concrete sleepers, the load between the rails is widely distributed to increase the resistance against lateral pressure and the holding force between the rails. A rail fastening device in which a tie plate is interposed is used.
As such a rail fastening device, a pair of protrusions (so-called claws) are formed on the upper surface of the tie plate, a rail is placed between the pair of protrusions, and the rail head to the rail. The lateral pressure transmitted to the bottom is received by these projections, and the rail is supported by a spring clip that presses the bottom of the rail and a fastening bolt that attaches the spring clip to the concrete sleeper, such as a track slab or concrete sleeper. What fastens to a body is known (refer to patent documents 1).

Japanese Utility Model Publication No. 45-1785

However, in the above-described rail fastening device, the pair of protrusions formed on the top surface of the tie plate receive the lateral pressure transmitted from the rail head to the rail bottom, so that the inner surface of the protrusion of the tie plate is the rail. The rail bottom side surface of the rail and the inner surface of the projection of the tie plate slide relative to each other due to the vertical and lateral movement of the rail generated by the train load passing through the rail. The lateral pressure applied from the rail causes wear on the inner surface of the protrusion of the tie plate.
When the wear of the tie plate reaches the service limit, the tie plate must be exchanged, and the track maintenance work becomes complicated, and the tie plate is disposed of, so the cost of track maintenance increases. is there.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to prevent lateral wear applied by the rail using the tie plate wear prevention protector to prevent tie plate wear due to sliding with the rail. It is intended to provide a tie plate wear-preventing rail fastening device that extends the service life, simplifies track maintenance and laying operations, and reduces track cost.

  The present invention relates to a tie plate for placing a rail between a pair of protrusions formed on the upper surface of a plate, a spring clip for pressing the rail bottom upper surface of the rail placed on the tie plate, and the protrusion of the tie plate. A tie plate wear prevention rail fastening device comprising a tie plate wear prevention protector disposed between an inner surface and a rail bottom side surface of the rail, wherein the tie plate wear prevention protector is formed on a protrusion of the tie plate. The projection includes a horizontal portion that abuts on the upper surface of the projection and a hanging portion that extends from the end of the horizontal portion and abuts on the outer surface of the projection that is formed on the projection of the tie plate. Thus, the above-described problems are solved by providing the engaging pieces that engage with each other.

The tie plate wear prevention rail fastening device according to the present invention includes a horizontal portion where a tie plate wear prevention protector abuts on an upper surface of a protrusion formed on the protrusion of the tie plate and an end of the horizontal portion extending from the tie plate protrusion. It is composed of a hanging part that abuts against the outer surface of the protrusion formed in the section, and has an engagement piece that engages so as to surround the upper surface of the protrusion and the outer surface of the protrusion, thereby receiving lateral pressure applied from the rail. The wear of the tie plate due to sliding with the rail can be prevented and the life of the tie plate can be extended.
Also, even when the tie plate wear prevention protector is worn and replaced when it reaches the limit of use, the tie plate wear prevention protector is lighter than the tie plate and the tie plate is placed on the PC sleeper. Since it can be exchanged in a state, the track maintenance work is easy, and since it is much cheaper than the tie plate, the maintenance cost of the tie plate can be reduced and the maintenance cost can be reduced.
Furthermore, since the tie plate wear prevention protector is provided with an engagement piece that engages with the tie plate protrusion, the placed tie plate wear prevention protector collapses when laying the rail or replacing the protector. Since it does not shift in the left-right direction, rail laying work and track maintenance work can be performed more easily.

  The present invention relates to a tie plate for placing a rail between a pair of protrusions formed on the upper surface of a plate, a pair of spring clips for pressing the rail bottom upper surface of the rail, an inner surface of the protrusion of the tie plate, and a rail of the rail In a tie plate wear prevention rail fastening device having a tie plate wear prevention protector disposed between a bottom side surface and a tie plate wear prevention protector, the tie plate wear prevention protector abuts on an upper surface of the protrusion formed on the protrusion of the tie plate. Engagement that extends from the end of the horizontal part and has a hanging part that abuts against the outer surface of the protrusion formed on the tie plate protrusion, and engages the upper surface of the protrusion and the outer surface of the protrusion. By providing a piece, the lateral pressure applied from the rail is received and the wear of the tie plate due to sliding with the rail is prevented, thereby extending the life of the wire. Conveniently Complete, as long as it reduces the track maintenance costs, its specific form may be any of those.

  That is, the pair of protrusions of the tie plate includes at least a protrusion inner surface, a protrusion upper surface, and a protrusion outer surface, and forms a gap for disposing the tie plate wear prevention protector between the rail bottom surface of the rail. As long as the lateral pressure of the rail can be received through the tie plate wear prevention protector, it may have any shape.

  The spring clip may have any shape and structure as long as one end is brought into contact with the upper surface of the rail bottom of the rail and the rail can be pressed to fasten the rail to the PC sleeper through the tie plate.

The tie plate wear prevention protector includes at least an engagement piece that engages with the tie plate protrusion, and is disposed between the tie plate inner surface and the rail bottom side surface to receive the rail lateral pressure. If possible, the shape may be any, but as a plate-like body, both sides of the lower surface are extended, and the recess formed between these extended portions is fitted to the side surface of the tie plate, This is preferable because positioning when the protector is attached is easy and movement in the front-rear direction is also restricted.
In addition, the engagement piece provided on the tie plate wear prevention protector is formed on the tie plate projection extending from the horizontal portion contacting the upper surface of the projection portion formed on the projection portion of the tie plate and the end portion of the horizontal portion. As long as the tie plate projections can be engaged with the projections of the tie plate so that the protector for preventing tie plate wear does not move in the left-right direction. .

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1 is a plan view of a railroad track in which a rail is mounted on a tie plate wear prevention rail fastening device according to an embodiment of the present invention, and FIG. FIG. 3 is a front view of the railroad track shown, and FIG. 3 is an assembly diagram of the tie plate wear prevention rail fastening device of the present embodiment.

  As shown in FIGS. 1 to 3, the tie plate wear preventing rail fastening device 100 according to the present embodiment forms a pair of protrusions 111, 111 on the upper surface of the plate and a rail R between the protrusions 111, 111. , A spring clip 120 that presses the rail bottom upper surface R1 of the rail R and fastens the rail R to the PC sleeper S via the tie plate 110, and the rail bottom side surface R2 of the rail R and the type A tie plate wear prevention protector 130 disposed between the inner surface 111a of the protrusion 110 of the rate 110 is provided.

As shown in FIGS. 1 and 2, the tie plate 110 is placed on a rubber tie plate pad 140 laid on the PC sleeper S, and a pair of protrusions provided on the upper surface of the plate of the tie plate 110 are provided. A rail R is placed between the portions 111 and 111 via a rail pad 150.
Further, in order to press the rail bottom upper surface R1 of the rail R, the spring clips 120, 120 abut the upper end 122a of the spring clip 120 on the rail bottom upper surface R1, and the intermediate curved portion 121 is connected to the PC sleeper S. In addition, the rail R is fixed to the tie plate 110 by screwing a fastening bolt 170 into a female screw hole S1 provided in the PC sleeper S through a spring washer 171 and a washer 172. To the PC sleeper S.
Further, a tie plate wear prevention protector 130 is disposed between the protrusion inner surface 111a of the tie plate 110 and the rail bottom surface side surface R2 of the rail R, and the protrusion of the rail bottom surface side surface R2 of the rail R and the tie plate 110 protrudes. The contact with the inner surface 111 a is prevented, and the wear of the protrusion inner surface 111 a of the tie plate 110 due to the sliding contact with the rail R, that is, the wear of the tie plate 110 is prevented.

As shown in FIG. 3, the tie plate 110 has a pair of protrusions 111 and 111 called so-called claws formed on the upper surface of the plate. The protrusion 111 has a protrusion inner surface 111a as a flat surface and a protrusion outer surface 111b. It has a trapezoidal cross-section with an inclined surface.
And, when the spring clip 120 presses the rail R, the intermediate portion of the protrusion upper surface 111c is longer than the width of the spring clip 120 so as not to contact the protrusion upper surface 111c and prevent the rail R from being pressed. An upper surface recess 111d is formed, and an outer surface recess 111e is also formed at an intermediate portion of the protrusion outer surface 111b.
In addition, a long hole 112 is provided at each of the outer centers of the pair of protrusions 111 and 111, and a pair of mountain-shaped protrusions 113 and 113 are provided on both sides of the long hole 112.

The spring clip 120 is a plate-like body having a two-layer structure of a U-shaped curved portion 121, an upper portion 122 extending in the horizontal direction from the upper end of the curved portion 121, and a lower portion 123 extending in the horizontal direction from the lower end.
The upper portion 122 of the spring clip 120 is inclined upward so that the end portion 122a conforms to the shape of the rail bottom upper surface R1, and a long hole 122c through which the fastening bolt 170 passes is formed in the straight portion 122b of the upper portion 122. ing.
The lower portion 123 of the spring clip 120 includes a straight portion 123a extending from the end of the U-shaped curved portion 121. The straight portion 123a is branched into two toward the tip, and branched portions 123b and 123b. A space 123c is formed so that the fastening bolt 170 can be inserted therethrough.
Further, when the spring clip 120 is attached, the branch portions 123b and 123b of the spring clip 120 are in contact with the top surfaces of the mountain-shaped protrusions 113 and 113 provided on the tie plate 110, respectively.

The tie plate wear prevention protector 130 is a plate-like body that is longer than the width of the tie plate 110, and the tie plate wear prevention protector is provided at the intermediate portion of the upper surface 131 when the spring clip 120 presses the rail R. A recess 131a longer than the width of the spring clip 120 is formed so as not to contact the upper surface of 130 and prevent the rail R from being pressed, and the bottom surface 132 extends downward on both sides, and the extensions 132a, 132a. A recess 132b is formed therebetween.
Thereby, when it attaches to the tie plate 110, it fits over the protrusion 111 of the tie plate 110 so that it may fit.

Further, engagement pieces 133 and 133 are attached to both sides 131b and 131b of the upper surface 131 of the tie plate wear prevention protector 130 by welding.
The engagement piece 133 extends downward from the end of the horizontal portion 133 a and the horizontal portion 133 a that contacts the upper surface 111 c of the protruding portion 111 of the tie plate 110, and contacts the protruding outer surface 111 b of the protruding portion 111. It consists of a hanging part 133b in contact.

Therefore, when the tie plate wear prevention protector 130 is mounted along the protrusion inner surface 111 a of the tie plate 110, the engagement piece 133 of the tie plate wear prevention protector 130 is brought into contact with the protrusion 111 of the tie plate 110. Engage the upper surface 111c and the protrusion outer surface 111b so as to enclose the tie plate wear prevention protector 130 in the left-right direction.
Further, the concave portion 132b of the bottom surface 132 is engaged with the side surface of the tie plate 110 to restrict the movement of the tie plate wear prevention protector 130 in the front-rear direction.
For this reason, the attached tie plate wear prevention protector 130 does not fall down and does not shake in the front-rear and left-right directions.
Further, since the attached spring clip 120 is located at the center of the upper surface of the tie plate wear prevention protector 130, it can be prevented from coming out upward even if the tie plate wear prevention protector 130 is lifted by vibrations or the like.

And the tie plate wear prevention rail fastening device 100 of the present embodiment has a long hole 112 provided in the tie plate 110 in the female screw hole S1 provided in the PC sleeper S, as shown in FIGS. The tie plate is placed on the PC sleeper S through a tie plate pad 140 having a long hole similar to that of the tie plate 110 so as to match, and the protector 130 for preventing tie plate wear along the protrusion inner surface 111a of the tie plate 110. When inserted in this manner, the concave portion 132b of the bottom surface 132 of the tie plate wear prevention protector 130 is fitted into the tie plate 110, and at the same time, the engaging piece 133 is locked to the protrusion 111 of the tie plate 110.
Next, the rail R is placed between the protrusions 111 of the tie plate 110 via a rail pad 150 (not shown in FIG. 3), and the spring clip 120 is connected to the long hole 122c and the tie plate 110. And the front end portion 122a of the spring clip 120 is brought into contact with the rail bottom upper surface R1 of the rail R, and the branch portions 123b and 123b of the spring clip 120 are also provided in the ridge shape 110. 113, 113, and the curved portion 121 of the spring clip 120 is accommodated in a resin spring pedestal 160 disposed in the PC sleeper S, and the spring washer 171 and By inserting the fastening bolt 170 through the washer 172 and screwing it into the female screw hole S1 provided in the PC sleeper S, Le R is fastened to the PC sleeper S through the tie plate 110.
At this time, the branch portions 123b and 123b of the spring clip 120 press the mountain-shaped protrusions 113 and 113 of the tie plate 110, and the tie plate 110 is firmly fixed to the PC sleeper S.
The tie plate wear prevention protector 130 may be attached in advance to the tie plate 110 before the tie plate 110 is placed on the PC sleeper S.

  As described above in detail, the tie plate wear prevention rail fastening device 100 of the present invention includes the tie plate wear prevention protector 130 disposed between the rail bottom side surface R2 and the projections 111 of the tie plate 110. The tie plate wear prevention protector 130 is in contact with a projection upper surface 111c formed on the projection 111 of the tie plate 110 and extends from the end of the horizontal portion 133a. It is provided with an engagement piece 133 that is formed of a hanging portion 133b that abuts against the projection outer surface 111b formed on the projection and engages so as to surround the projection upper surface 111a and the projection outer surface 111b. Using a protector, the lateral pressure applied from the rail is received to prevent wear of the tie plate 110 due to sliding with the rail. Together to increase the life of the rail laying work and track maintenance work can be easily performed, also that it is possible to reduce track maintenance costs, the effect is significant.

The top view of the railroad track which attached the rail to the tie plate wear prevention rail fastening device concerning this example. The front view of the railroad track which showed a part in FIG. 1 in the AA cross section. The assembly drawing of the tie plate abrasion prevention rail fastening device of a present Example.

DESCRIPTION OF SYMBOLS 100 ... Tie plate wear prevention rail fastening apparatus 110 ... Tie plate 111 ... Projection 111a ... Projection inner surface 111b ... Projection outer surface 111c ... Projection upper surface 111d ... Upper surface recessed part 111e ... Outer surface recess 112 ... Long hole 113 ... Mountain-shaped protrusion 120 ... Spring clip 121 ... Curved part 122 ... Upper part 122a ... Linear part 122b ... End part 123 ... Lower part 123a ... Linear part 123b ... Branch part 123c ... Space part 130 ... Tie plate wear prevention protector 131 ... Upper surface 131a ... Recessed part 131b ... Side part 132 .. Bottom surface 132a ... Extension portion 132b ... Concavity 133 ... Engagement piece 133a ... Horizontal portion 133b ... Hanging portion 1 0 ... Tie plate pad 150 ... Rail pad 160 ... Spring seat 170 ... Fastening bolt 171 ... Spring washer 172 ... Washer R ... Rail R1 ... Rail bottom upper surface R2・ ・ ・ Rail bottom side S ・ ・ ・ PC sleeper S1 ・ ・ ・ Female screw hole

Claims (1)

A tie plate for placing the rail between a pair of protrusions formed on the upper surface of the plate, a spring clip for pressing the rail bottom upper surface of the rail placed on the tie plate, an inner surface of the protrusion of the tie plate and the rail A tie plate wear prevention rail fastening device comprising a tie plate wear prevention protector disposed between a rail bottom portion side surface,
The tie plate wear prevention protector has a horizontal portion that contacts the upper surface of the projection formed on the projection of the tie plate and an outer surface of the projection that extends from the end of the horizontal portion and is formed on the projection of the tie plate. A tie plate wear-preventing rail fastening device comprising an engagement piece configured to be in contact with a drooping lower portion and engaged so as to surround a protrusion upper surface and a protrusion outer surface.

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