JPS6120084Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a rubber plate (interposed between the base of a railway rail and concrete sleepers) used to buffer and transmit vibrations applied from a running vehicle between the sleepers. This invention relates to the improvement of the Thai Pad (commonly known as the Thai Pad).

The simplest shape of the tie pad is as shown in FIGS. 1 and 2, and is an elastic plate made of a rubber material and having a flat rectangular shape on both sides.

This product has a high spring constant because both sides are flat, so in order to lower the spring constant and improve the cushioning effect, it is necessary to extremely reduce the hardness of the rubber material used (up to about 40 degrees Hs). , it was necessary to use a soft material.

However, if the hardness of the rubber material is made extremely soft, the tie pad surface will wear out prematurely due to not only the tie pad's sagging phenomenon, but also the vertical load and repeated small-return loads due to lateral pressure when passing vehicles. Tie pads that are flat on both sides cannot be used as a buffer for railway rails, and for this reason,
In order to make the rubber material harder and lower the spring constant, a rubber material with many linear grooves 1 on both sides was devised, as shown in Figures 3 and 4. It became possible to put it into practical use as a buffer for rails.

This does not pose a particular problem when the railway rail is used in a straight location, but its durability becomes a major problem when used in the locations described below.

That is, FIG. 5 shows a tie pad 4 installed between a railway rail 2 and a concrete sleeper 3, and 5 is a rail clip.

However, because of the above-mentioned mounting configuration, in places where the railway rail is curved, the rail is subjected to significantly greater lateral pressure from the traveling vehicle, resulting in an extremely small deflection phenomenon as shown in Figure 6. As a result of this large bending phenomenon being repeated, the base corner A of the rail 2 bites into the edge position of the tie pad 4 (see Figure 5) and the edge of the tie pad 4 due to the lateral movement of the rail. The tie pad 4 will be damaged or worn out at an early stage due to the rubbing of the parts.

As a means of solving this problem, as shown in FIGS. 7 and 8, a tie pad main body 1 has been put into practical use.
A notch 11 is provided on the lower surface of both opposing edges of 0, and a tongue-like part 12 that fills this notch 11 and a rubber hardness having a cross-sectional surface
It has been proposed that rubber reinforcing members 13 of Hs 90° or more are bonded to both opposing edges of the tie pad main body 10.

In FIG. 8, the dotted line indicates the base part of the railway rail 2, and the base part A is of course manufactured so as to be on the reinforcing member 13.

In the tie pad configured as described above, the rubber reinforcing members 13 provided on both edges strongly resist the small bending phenomenon and are effective in reducing the small bending phenomenon itself, but under severe usage conditions. , Rubber reinforcing member 1 due to repeated loads applied to the tie pad
Wear and tear in three places is unavoidable, and the tie pad body 1
In order to maintain the strength of the bonded area between the rubber reinforcing member 13 and the rubber reinforcing member 13, a highly labor-intensive process is required for quality control, and the cost is also high.

The present invention was developed in view of the above points, and its gist is that a metal , a thin rectangular plate made of high-strength material such as nylon resin is attached over the entire length with a small width.

Next, this will be explained in detail according to the drawings.

9 and 10 show the tie pad according to the present invention, 20 is an elastic plate, which has a rectangular shape as a whole and is made of a rubber material with a rubber hardness of Hs 60° to 80°. . 21 is a strip groove;
In order to lower the spring constant and improve buffering efficiency, the holes are provided on both sides of the elastic plate 20 in a staggered manner. 22 is rectangular 1-2m/m
It is a thin plate made of a highly rigid material such as metal such as iron or nylon resin, and has a rectangular shape on one side of the elastic plate 20 (the side in contact with the rail base surface). ), and a small width (ω=10m/m~30m/
m), and is attached over the entire length using an adhesive or adhesive at the same time as vulcanization. Note that the dotted line indicates the state in which the railway rail 2 is placed.

In addition, in FIG. 10, the top surface B of the thin plate 22 is flush with the top surface C of the elastic plate 20, but as shown in FIG. It may be placed lower than C, and a step may be provided.

Furthermore, in FIGS. 10 and 11, the thin plate 2
Although the inner surface 2 of 2 and the elastic plate 20 are in close contact with each other without any gap, as shown in FIG.
A thin groove 23 may be provided on the elastic plate 20 at a position on the inner surface of the rectangular thin plate 22 along the longitudinal direction of the plate 22.

Figures 13 and 14 show another example of the tie pad according to the present invention, in which a notch 24 is provided at the center in the longitudinal direction of both opposing edges, and the notch is planted in a concrete sleeper. protrusion (15th)
The tie pad has a function of preventing movement of the tie pad (shown in FIG. A thin rectangular plate 22 made of a high-strength material is attached in the same manner as described above.

The tie pad of the present invention constructed as described above has thin plates 22 made of a highly rigid material with a narrow width attached to the surface positions of both opposing edges of the tie pad, and the railway rail 2 is attached to the base surface of the plate. Since the tie pad is installed so as to straddle this, it is possible to effectively prevent the phenomenon of small bending even when the tie pad is installed at a curved part, and at this time, the relationship between the thin plate 22 and the elastic plate 20 is similar to that of the elastic plate. 20
is integrally formed over the entire width, and the thin plate 22 is placed on the edge of the surface and attached, so that the structure has adhesive points as shown in FIGS. 7 and 8. Furthermore, since the thin plate 22 is made of a highly rigid material such as metal or nylon resin material, it can withstand the creeping movement of the rail and even small warping due to lateral pressure. It does not wear out easily and is sufficiently durable for practical use.

On the other hand, as another example of the present invention, FIGS. 13 to 15 show a case in which a notch 24 for preventing movement of the tie pad is provided at the longitudinal center of both opposing edges. However, in this case, the thin plate 22 also effectively prevents the elastic plate 20 from being torn when the movement is prevented.

[Brief explanation of the drawing]

1 to 10 are diagrams for explaining the conventional example, in which FIG. 1 is a plan view, FIG. 2 is a cross-sectional view of a portion of FIG. Figure 3 - Sectional cross-sectional view, Figure 5 is a cross-sectional view explaining the attachment state of the tie pad, Figure 6 is a cross-sectional view explaining the bent state of the rail, Figure 7 is a plan view, and Figure 8 is a cross-sectional view explaining the mounting condition of the tie pad. 9 to 15 are diagrams for explaining the present invention, in which FIG. 9 is a plan view, FIG. 10 is a partial sectional view, and FIG. FIG. 12 is a sectional view, FIG. 13 is a plan view, and FIG. 14 is a sectional view of FIG.
FIG. 15 is a plan view illustrating the attachment state of the tie pad. DESCRIPTION OF SYMBOLS 1... Slit groove, 2... Rail, 3... Concrete sleeper, 4... Tie pad, A... Base corner of rail 2, 10... Tie pad body, 11... Notch, 12... Tongue shaped part, 13... rubber reinforcing material, 2
0... Elastic body plate, 21... Thread groove, 22...
... Thin plate, 23... Slit groove, 24... Notch, 25... Protrusion, B... Thin plate 22
The top surface of the elastic plate 20, the top surface of the elastic plate 20, and the top surface of the elastic plate 20.
The inner surface of the thin plate 22.

Claims (1)

[Claims for Utility Model Registration] 1. At the surface positions of both opposing edges of one side of an elastic plate made of a square-shaped rubber material,
A rubber plate that is made of a highly rigid material such as metal or nylon resin, and is made of thin rectangular plates that are adhered to each other over a small width and entire length, and is intended to be used as a shock absorber for railway rails. 2. In the rubber plate described in claim 1 of the utility model registration claim, strip grooves are formed in the elastic plate along the longitudinal direction of the plate at the inner surface of the adhered rectangular thin plate. A rubber plate characterized by: