JP3866570B2 - Elastic fastening device for rails subjected to lateral pressure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic fastening device for a rail that receives a lateral pressure, such as a basic rail in a branching device of a railway track or a receiving rail or tongrail in an expansion joint.
[0002]
[Prior art]
Conventionally, a rigid rail brace having a floor plate, a rising portion that contacts a rail that is placed on the floor plate and receives lateral pressure, and a contact portion that contacts the bottom of the rail, and is fixed to or integrated with the floor plate The planar U-shaped locking bracket formed and erected, and the folded portions on both sides are locked to the recesses of the locking bracket, and the center folded portion protrudes from the lower surface of the gate portion of the locking bracket, and 2. Description of the Related Art An elastic fastening device for a rail that receives lateral pressure including a W-shaped wire spring clip that presses against a rail brace with spring pressure is known.
[0003]
In the above conventional example, the central folded portion of the W-shaped wire spring clip is located on the thick rail brace and is located outside the bottom of the rail receiving the lateral pressure, so that the spring pressure applied to the rail is small, and therefore the rail brace The number of parts is such as extending the rising part of the rail so that it contacts the jaw of the rail, supporting the rear end of the rail brace with a stopper, and interposing a loose washer between the rail brace and the central folded part. Many.
[0004]
As another conventional example, a rail brace is inserted into the flat U-shaped locking bracket fixed to the floor board, and the upper surface of the thick rail brace is pressed by the W-shaped wire spring clip. In this case, however, the rising part of the rail brace cannot be strongly pressed against the rail, and therefore, the number of parts is increased in this case, for example, the rear part of the rail brace is loosened and the stop washer is bitten. Accordingly, in all of the conventional examples, the production cost becomes high and the assembling work cannot be made quick.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to eliminate the above-mentioned drawbacks of the conventional example. The support force of the rail brace is increased and the pressing force of the W-shaped wire spring clip is efficiently improved, so that the rail can be stably provided with a small number of parts. The problem is to be able to support this.
[0006]
[Means for Solving the Problems]
The present invention relates to a floor plate, a rigid rail brace having a rising portion that abuts on a rail that is placed on the floor plate and receives a lateral pressure, and a contact portion on the bottom of the rail, and is fixed to the floor plate. The flat U-shaped locking metal fittings that are integrally formed and the folding parts on both sides are locked to the concave parts of the locking metal parts, and the central folding part protrudes from the lower surface of the gate part of the locking metal parts. In an elastic fastening device for a rail that receives lateral pressure composed of a W-shaped wire spring clip that presses against the rail brace with spring pressure, an inclined groove is provided on the upper surface of the floor plate, and the rail brace is formed in a plane U shape. Forming an opening, and forming the rail brace into a side L shape and forming the rising portion at a height that contacts the abdomen of the rail, and from the rising portion toward the opening, and The A lower step located on the bottom of the rail brace is provided continuously, an insertion leg slidable in the inclined groove is formed at the lower end of the rear portion of the rail brace, and the locking bracket is disposed in the opening and with respect to the rail. The central folded portion of the W-shaped wire spring clip is pressed by a spring pressure from directly above the bottom of the rail through the lower step portion.
[0007]
A rail brace having an opening is dropped into a locking bracket standing on the floor plate, an insertion leg is inserted into the inclined groove of the floor plate, and the side plate of the rail brace is hit with a hammer or the like. Here, since the insertion leg is guided and slid by the inclined groove, a wedge action is generated, and the rising portion of the rail brace strongly presses against the abdominal portion of the rail. Subsequently, when the W-shaped wire spring clip is pushed into the locking bracket from the outside, the folded portions on both sides are locked to the recesses of the locking bracket and the central folding portion protrudes from the lower surface of the gate portion of the locking bracket. The lower part of the rail brace is elastically pressed to the bottom of the rail brace via the lower part directly above the bottom of the rail. Press on.
[0008]
The means of the present invention does not specify the shape of the edge of the lower step part, but the edge of the lower step part of the rail brace is preferably parallel to the inclined groove of the floor board.
[0009]
In this way, regardless of the position of the rail brace, the contact area between the central folded portion and the lower step portion of the wire spring clip is the same, the pressing force is constant, and stability is good.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The example shown in the figure shows an embodiment of the present invention in a branching device, and a floor board 1 is attached to a sleeper not shown through a variable pad 6 and a track pad 7 by means not shown. . A concave groove 12 and an inclined groove 11 are formed on the floor plate 1, and a basic rail is placed on the bottom of the concave groove 12 as a rail 2 that receives lateral pressure, and the left end of the bottom 21 is a concave groove 12 as shown in FIG. The end and the upper floor board 1 'fixed on the floor board 1 are locked. Reference numeral 8 denotes a tongrel, which is moved left and right on the upper floor plate 1 'by means of an unillustrated roller as shown by the arrow in FIG. 2, and in FIGS. ing.
[0011]
At the bottom of the concave groove 12, a U-shaped locking metal fitting 4 is fixed at a position perpendicular to the rail 1 by welding and is erected on the floor plate 1. This locking metal fitting 4 is a commercially available one that is formed to be lower than both side plates 36, 36 of the rail brace 3 described later. Concave portions 40 and 40 are formed on both sides of the locking metal fitting 4, respectively, and a gate portion 41 is formed inside the upper portion.
[0012]
In the figure, reference numeral 3 denotes a rigid rail brace, and the rail brace 3 has a U-shape and has an opening 33. The rail brace 3 is formed by integrally forming a rising portion 30 and both side plates 36, 36 in a substantially L shape, and the height of the rising portion 30 is in contact with the abdomen 20 of the rail 2, and is opened from the rising portion 30. A lower step 34 that is lower than the side plates 36 is provided continuously toward the portion 33, and the lower step 34 has a distance that contacts the bottom 21 of the rail 2, and an edge 35 of the lower step 34 is inclined to the floor plate 1. An insertion leg 32, which is parallel to the groove 11 and is slidable in the inclined groove 11 at the rear lower end of the rail brace 3, is integrally hung on both side plates 36 and 36.
[0013]
In the figure, reference numeral 5 denotes a W-shaped wire spring clip made of a spring steel wire, and the locking metal fitting 4 and the wire spring clip 5 are publicly known.
[0014]
Next, the assembly method and operation of the elastic fastening device according to the present invention will be described. The central folding portion 51 of the W-shaped wire spring clip 5 is inserted into the rail 2 on the locking metal fitting 4 standing on the floor plate 1. Install until just before this. The rail 2 is arranged on the floor board 1. Next, the rail brace 3 having the opening 3 is dropped into the locking bracket 4, the insertion leg 32 is inserted into the inclined groove 11 of the floor plate 1, and the side plate 36 of the rail brace 3 is hit with a hammer or the like. Here, since the insertion leg 32 slides while being guided by the inclined groove 11, a wedge action occurs, and the rising portion 30 of the rail brace 3 is strongly pressed against the abdominal portion 20 of the rail 2. Subsequently, when the W-shaped wire spring clip 5 is further pushed into the locking bracket 4 from the outside, the folded portions 50 on both sides are securely locked to the recesses 40, 40 of the locking bracket 4 and the central folded portion. 51 protrudes from the lower surface of the gate portion 41 of the locking metal fitting 4 and elastically presses on the lower step portion 34 of the rail brace 3, is much lower than the side plates 36, 36 of the rail brace 3, and the bottom portion 21 of the rail 2. The contact portion 31 of the rail brace 3 presses the bottom portion 21 of the rail 2 reliably through the lower step portion 34 located directly above.
[0015]
In the above embodiment, the elastic fastening device of the present invention has been described by taking the case of a branching device as an example. However, in the case of an expansion / contraction seam, the rail 2 becomes a receiving rail or a tongler and there is no tongler 8 for the branching device. The structure, assembly method, and operation of the elastic fastening device of the present invention are the same as those of the branching device.
[0016]
【The invention's effect】
According to the invention of claim 1 of the present invention, the rail brace strongly abuts against the rail abdomen due to the wedge action, and the elastic action of the wire spring clip is lower than the side plate called the lower step part, and works strongly directly above the rail bottom part, It can withstand the lateral pressure sufficiently, and since the support force of the rail is small like the conventional example, the rising part is extended to the jaw part of the rail, and parts such as a stopper and a locking washer are unnecessary. The number of parts is small, and it can be manufactured and assembled inexpensively, quickly and easily. Further, since the locking metal fitting is erected in a direction perpendicular to the rail, the wire spring clip can be temporarily fixed before the rail is arranged on the floor plate, and the subsequent work is facilitated.
[0017]
According to the invention of the second aspect of the present invention, in addition to the effect of the invention of the first aspect, the center folding portion of the wire spring clip is provided regardless of the position of the rail brace by sliding the rail brace in the oblique direction. The contact area with respect to the lower step portion becomes uniform, and the rail can be supported more stably and reliably.
[Brief description of the drawings]
FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA.
FIG. 3 is a partially cutaway front view in which part of the above is omitted.
[Explanation of symbols]
1 Floor board
2 rails
3 rail breath
4 Locking bracket
5 wire spring clip
11 Inclined groove
20 Abdomen
21 Bottom
30 Rise
32 Insertion leg
33 opening
34 Lower part
35 edge
40 recess
41 Gate part
50 Folding part
51 Central turning section

Claims (2)

A rigid rail brace having a floor plate, a rising portion that contacts the rail that is placed on the floor plate and receives lateral pressure, and a contact portion that contacts the bottom of the rail, and is fixed or integrally formed on the floor plate. And the rail brace projecting from the lower surface of the gate portion of the locking bracket and the center folding portion protruding from the lower surface of the gate portion of the locking bracket. In an elastic fastening device for a rail that receives a lateral pressure consisting of a W-shaped wire spring clip that is pressed by spring pressure, an inclined groove is provided on the upper surface of the floor plate, and the rail brace is formed in a planar U-shape and opened. And the rail brace is formed in an L-shaped side surface and the rising portion is formed at a height that abuts against the abdomen of the rail, and from the rising portion toward the opening, and the rail bottom A lower step located at the bottom of the rail brace, and an insertion leg that is slidable in the inclined groove is formed at the rear lower end of the rail brace, and the locking bracket is disposed in the opening and in a direction perpendicular to the rail. Elastic fastening of a rail that receives lateral pressure, wherein the rail is provided at a position, and the central folded portion of the W-shaped wire spring clip is pressed from above the bottom of the rail with spring pressure via the lower step portion. apparatus. 2. The elastic fastening device for a rail receiving lateral pressure according to claim 1, wherein an edge of the lower step portion of the rail brace is parallel to the inclined groove of the floor board.

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