RU2454496C1 - Reinforced rail brace - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: reinforced rail brace comprises an anchor fixed on a sleeper, a tie plate, a spring clip, which elastically presses a cranked fish plate. It is also equipped with a wedge spacer installed between the cranked fish plate and the anchor with the possibility to install rails in the horizontal plane. The cranked fish plate is made as a whole with the spring clip, from electric insulation material, with an additional stop at one side or two sides of a rail journal, and is installed on the anchor at the distance of the upper surface of the additional stop from the lower surface of the rail head, providing for passage of the devices for gripping the rail head during track repair. The cranked fish plate is arranged with a ledge for its fixation relative to the wedge spacer or the anchor. The wedge spacer is arranged with vertical slots in the upper part for its fixation with the spring clip relative to the anchor.

EFFECT: reduced labour intensiveness of servicing rail braces in a track, higher reliability and efficiency of rail brace operation.

2 cl, 2 dwg

Description

The invention relates to a railway track and is intended for attaching rails to rail tracks, sleepers under conditions of increased vertical and horizontal dynamic loads, including on track sections with small radii.

A suspension rail fastening is known, comprising two elastic pads supporting the rail head, two pendants transmitting lateral clamping force to these pads, a rail lining with shoulders and two wedge inserts between the corresponding shoulder and the suspension, at least one of the shoulders is mounted above the lining and held in this position due to lateral compressive force. (SU, patent for invention No. 6651897 VA, cl. 7 E01B 9/00, publ. 2004)

The disadvantages of the known invention are:

- the presence of a gap between the sole of the rail and the lining with the possibility of ingress of contaminants into it, which reduces the reliability of the rail fastening;

- the location of the pads in the niches of the rail complicates the maintenance and repair of the rail track, since it is not possible to capture the rail head when lifting the track with track machines.

An adjustable rail fastening is known, consisting of a rail terminal fixed by means of a driving wedge between the fixed cage and the rigid stop, the wedge and the stop contain a tongue-and-groove connection to prevent vertical displacement of the wedge, the connection of this wedge and the terminal has mating convex-concave contact surfaces, and the wedge is held in position by a split cotter pin. (US patent for the invention No. 6568601 BB, cl. 7 E01B 9/60, publ. 2004)

The disadvantages of the invention are:

- large dimensions of rail fastening along the sleepers;

- the location of the rail terminals in the niches of the rail complicates the maintenance and repair of the rail, as it is not possible to capture the rail head when lifting the track with track machines.

Known boltless elastic rail fastening, adopted as a prototype, containing an adapter plate L-shaped cross-section, anti-theft (anchor), rail lining, spring rod terminal (spring terminal), elastically pressing its U-shaped section of the pad to the sole and rail head. (JP, patent for the invention No. 3081826 B2, CL 7 E01B 9/48, publ. 2001)

The disadvantages of the invention are:

- the location of the transitional lining of the L-shaped cross-section in the niches of the rail complicates the maintenance and repair of the rail track, as it is not possible to capture the rail head when lifting the track with track machines;

- the wedge contact surfaces of the anti-theft and the lining are subjected to heavy loads under the action of horizontal dynamic forces, which reduces the reliability of rail fastening;

- there is no electrical insulator between the rail and the bond, which reduces its effectiveness.

The technical result of the invention is to reduce the complexity of the service rail fasteners in transit and increase the reliability and efficiency.

The specified technical result is achieved by the fact that the reinforced rail fastening comprising an anchor mounted on a railroad tie, a rail lining, a spring terminal, elastically pressing the adapter plate, is additionally equipped with a wedge spacer installed between the adapter plate and the anchor with the possibility of installing rails in a horizontal plane, the adapter plate made as a unit with a spring terminal made of insulating material with an additional emphasis on one side or on both sides of the rail neck and mounted on the anchor at a distance of the upper surface of the additional stop from the lower surface of the rail head, ensuring the passage of devices for gripping the rail head during the repair of the track, the adapter plate is made with a protrusion to fix it relative to the wedge spacer or anchor, the wedge spacer is made with vertical grooves in the upper part for fixing it with a spring terminal relative to the anchor, reinforced rail fastening is additionally equipped with an adjusting wedge spacer installed between the anchor rum and a spring terminal with the ability to change the contact pressure of the spring rail terminal to the rail seat and sleeper.

Figure 1 shows a reinforced rail fastening, front view, figure 2 shows a plan view of figure 1.

Reinforced rail fastening (Fig.1 and 2), containing an anchor 1, mounted on the sleepers 2, rail lining 3, a spring terminal 4, elastically pressing the adapter plate 5, is additionally equipped with a wedge spacer 6 mounted between the adapter plate 5 and the anchor 1 with the possibility installation of the rails 7 in the horizontal plane, the adapter plate 5 is made as a unit with the spring terminal 4 of electrical insulation material with an additional emphasis 8 on one side or on both sides of the neck of the rail 7 and is installed on the anchor 1 at a distance the upper surface of the stop 8 from the lower surface of the rail head 7, ensuring the passage of devices for gripping the rail head during repair of the track, the adapter plate 5 is made with a protrusion 9 to fix it relative to the wedge spacer 6 or anchor 1, the wedge spacer 6 is made with vertical grooves 10 in the upper part for fixing it with a spring terminal 4 relative to the anchor 1, reinforced rail fastening is additionally equipped with an adjusting wedge spacer 11, installed between the anchor 1 and the spring terminal 4 with the possibility of the ability to change the pressing force of the rail 7 spring clip 4 to the rail lining 3 and sleepers 2.

Reinforced rail fastening works as follows.

When passing railway transport, especially in sections with small radii, the rail head 7 is affected by vertical static and dynamic forces Pv and horizontal dynamic forces Pg, whose influence on the design of rail fasteners and on the state of the ballast prism depends on the stiffness of the fastener and the ratio of spring stiffness terminals 4 and rail lining 3. (V.V.Kuptsov and A.N. sleepers ”, proceedings of VNIIZHT, issue 616, Moscow“ Transport ”, 1979) An increase in the rigidity of the rail fastener assembly increases the stability of the position of the rails 7 relative to the sleepers 2, but at the same time increases the dynamic loads from the forces Rv acting on the rail fastening, and reduces the resource of rail fastenings and ballast of the rail track. A decrease in the rigidity of the rail fastener assembly reduces the dynamic loads on the rail fasteners and the ballast of the rail track, but also reduces the resistance of the rail fastenings to the action of horizontal dynamic loads from the forces Pr. The presence of an additional stop 8 of the adapter plate 5, made in addition to the lateral edge of the sole of the rail 7 and to the neck of the rail 7 at a distance that ensures the passage of devices for gripping the head of the rail 7 during the repair of the track, the adapter plate 5 is made as a unit with the spring terminal 4 of electrical insulation material and additional equipment for fastening with a wedge spacer 6 for installing the rail 7 in a horizontal plane and an adjusting wedge spacer 11 installed between the anchor 1 and the spring terminal 4 for adjusting anija the contact pressure rail 7 to the rail seat 3 and a sleeper 2, increases resistance to the action of rail fastenings horizontal dynamic loads, reduces the complexity of regulation path in the horizontal plane and the service rail fastening in a way increasing the reliability and efficiency of the rail fastenings.

Claims (2)

1. Reinforced rail fastening comprising an anchor mounted on a railroad tie, a rail lining, a spring terminal, elastically pressing the adapter plate, characterized in that the reinforced rail adapter is additionally equipped with a wedge spacer installed between the adapter plate and the anchor with the possibility of installing the rails in a horizontal plane, adapter plate is made as a whole with a spring terminal, made of electrical insulation material, with an additional emphasis on one side or on both sides of the rail neck mounted on the anchor at a distance of the upper surface of the additional stop from the lower surface of the rail head, ensuring the passage of devices for gripping the rail head during repair of the track, the adapter plate is made with a protrusion to fix it relative to the wedge spacer or anchor, the wedge spacer is made with vertical grooves in the upper part for fixing it with a spring terminal relative to the anchor. 2. Reinforced rail fastening according to claim 1, characterized in that it is additionally equipped with an adjusting wedge spacer installed between the anchor and the spring terminal with the possibility of changing the force of pressing the rails with the spring terminal to the rail lining and the sleepers.

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