JPH044003Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention can be used to separate two rails even if the rail spacing is small, such as two individual rails on a three-track rail track where trains of two types of gauges pass. Concerning a twin rail fastening device that fastens to PC sleepers or concrete trackbeds.

Conventional technology Conventionally, PC sleepers or concrete trackbeds were
When fastening line rail tracks, concrete projections with support surfaces for fastening devices on both sides are integrally formed on PC sleepers between two individual rails, but concrete projections have insufficient strength against lateral pressure. was insufficient, and there was no other suitable means of fastening.

Problems to be solved by the invention The purpose of this invention is to create a twin rail fastening device that can reduce the spacing between two individual rails by using embedded steel parts that are resistant to lateral pressure in place of the concrete protrusions. There are suggestions.

Means to Solve the Problem This proposal uses the stepped inner surfaces at both ends of the recess formed on the upper surface of the PC sleeper or concrete track bed as the first spring support support surface, and the PC sleeper or A second spring pedestal support surface facing the first spring pedestal support surface is formed on both sides of the steel shoulder embedded and fixed in the concrete track bed, and the first and second spring pedestal support surfaces facing each other are It is characterized in that the rails laid on the recesses in between are fastened to the PC sleepers or the concrete track bed by means of spring clips whose outer ends are supported by spring holders placed on each spring holder support surface.

Function Steel shoulders embedded and fixed in PC sleepers or concrete trackbeds have high strength against lateral pressure, and can be formed with the spring cradle support surfaces on both sides sufficiently close to each other. Therefore, even if the distance between two individual rails is small, each rail can be securely fastened separately using the spring clip.

Embodiment FIG. 1 is a cross-sectional view of a three-line rail track connected to a PC sleeper 1, and the rails 2 and 3 form a standard gauge track and a narrow gauge track with a common rail 4, respectively.
A recess 5 for the common rail 4 and a recess 6 for the rails 2 and 3 are formed on the upper surface of the PC sleeper 1. Part 6a far from and part 6 near
b is formed to have a constant horizontal inclination angle between it and the recess 5, so that the recess portions 6a and 6b
It is parallel to and has a slight step.

The rail 4 is laid on the recess 5 via the track pad 8, and has a spring holder 10 in contact with the spring holder support surfaces 9 formed at both ends of the recess 5, and a flange 11 of the spring holder 10 and the rail 4. The rails are elastically fastened by a well-known rail fastening device 14 consisting of a spring clip 12 and a fastening bolt 13 that engage with the rail.

First spring pedestal support surfaces 15a and 15b similar to the spring pedestal support surface 9 are formed at both ends of the recess 6,
Well-known rail fastening devices 14a, 14 similar to those described above
b elastically fastens the outside flanges of the rails 2 and 3, respectively.

As shown in FIGS. 3 to 5, the shoulder 7 has a leg 16 and a support base 17 that expands in a tapered manner from its upper end to the periphery, which are embedded in the PC sleeper 1, and a jetty 18 is formed on the support base 17. Second spring pedestal support surfaces 19a, 1 are formed on both sides thereof and are opposed in parallel to the first spring pedestal support surfaces 15a, 15b, respectively.
Form 9b. As described above, since the recessed portions 6a and 6b have a step, the lower surfaces of the second spring holder support surfaces 19a and 19b also have a similar step.

The rails 2 and 3 are laid on the recessed portions 6a and 6b through the track pads 8, respectively, and the inner sides of the flanges are mounted using second spring pedestal support surfaces 19a and 19b, similar to the well-known rail fastening devices 14a and 14b. The rails are elastically fastened by the rail fastening devices 14c and 14d.

The shoulder 7 has a recess 20 in the leg 16 and a vertical buried surface 21 of sufficient height around the support base 17, so it can exhibit sufficient buried strength to obtain rail fastening force, and is made of steel. This increases the strength of the jetty 18 against horizontal loads, and by reducing its width, it is possible to easily secure the space necessary for the rail fastening devices 14c, 14d, etc.

Effects of the invention Since the present invention has the above-mentioned configuration, even in the case of PC sleepers and concrete trackbeds, it is possible to securely fasten two rails with a relatively small interval, such as non-common rails on a 3-track rail track, individually. There is an effect that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a plan view, and FIGS. 3, 4, and 5 are an elevation view, a plan view, and a side view of the shoulder, respectively. 1...PC sleepers or concrete track bed, 2,
3...Rail, 6, 6a, 6b...Recess, 7...
Steel shoulder, 10... Spring cradle, 12... Spring clip, 15a, 15b... First spring cradle support surface, 19a, 19b... Second spring cradle support surface.

Claims (1)

[Scope of utility model registration request] The inner surfaces of the steps at both ends of the recess formed on the upper surface of the PC sleeper or concrete track bed are used as the first spring cradle support surfaces, and both sides of the steel shoulder are embedded and fixed in the PC sleeper or concrete track bed at the center of the recess. a second spring cradle support surface opposite to the first spring cradle support surface;
forming a spring cradle support surface and facing each other;
A rail laid on a recess between the second spring pedestal support surfaces is connected to the spring pedestal by a spring clip whose outer end is supported by a spring pedestal placed on each spring pedestal support surface.
Twin rail fastening device that fastens to PC sleepers or concrete track bed.