RU221916U1 - RAIL FASTENING PRESS PLATE INSULATOR - Google Patents

Abstract

The utility model relates to the design of the superstructure of a railway track, in particular to a device for fastening a rail to a reinforced concrete sub-rail base at the junction of two rails. A rail fastening pressure plate insulator is provided which consists of an upper wall, a lower wall, two side walls and a front wall. The internal cavity of the insulator is a groove of such a shape as to be able to accept the edge of the pressure plate. The insulator in cross section has the shape of a trapezoid, the sides of which are the outer surfaces of the upper and lower walls, while the outer surface of the lower wall is made at an angle of 9°±0.5° to the height of the trapezoid. The technical result of the proposed utility model is to ensure strong, reliable fastening of the rails to the base at the junction of two rails due to the design of the insulator.

Description

The utility model relates to the design of the superstructure of a railway track, in particular to a device for fastening a rail to a reinforced concrete sub-rail base at the junction of two rails.

There are known designs of clamping insulators for anchor rail fastenings according to patents RU 131001, RU 183193, RU 190774, which have a similar design and consist of an upper wall lying in a horizontal plane, a lower wall lying in a plane parallel to the plane of the upper wall, two side rounded throughout its length of the walls connecting the side edges of the top and bottom walls, the end (front) wall connecting the front edges of the top wall, the bottom wall and two side walls. The internal cavity of the insulator is a groove shaped so as to be able to receive the middle U-shaped part of the terminal.

This type of clamping insulators can only be used for installation on M-shaped terminals.

Rail fastening insulators are also known according to patents RU 189552, RU 199291, RU 215400, RU 218394, which have a similar design and consist of a support part made at an angle corresponding to the angle of inclination of the rail sole flange, and intended for installation with its lower side on the sole flange rail, as well as for placing a clamping section of the terminal on its upper side, and a side stop, the rear lower side of which is designed to interact with the side surface of the rail base, and the front side with the anchor head through a protrusion made in its central part.

This type of clamping insulators can only be used for installation on B-shaped terminals.

The closest technical solution is a rail fastening clamping insulator, which has an L-shape in cross section. The insulator has protrusions along the edges for fixation on the anchor against longitudinal movements. The insulator, on one side, interacts with the flange and side surface of the rail base, and on the other, with the elastic plate (according to patent JP 2006045988, E04B 9/30, E04B 9/62, publ. 02/16/2006).

The disadvantage of this insulator is the insufficient reliability of its fixation on the rail fastening, which is carried out by two protrusions that fix the insulator only from longitudinal (relative to the rail) movement.

The technical result of the proposed utility model is to ensure strong, reliable fastening of the rails to the base at the junction of two rails due to the design of the insulator.

The specified technical result is achieved in that the insulator of the pressure plate of the rail fastening consists of an upper wall, a bottom wall, two side walls and a front wall, and the internal cavity of the insulator is a groove of such a shape as to be able to receive the edge of the pressure plate, and is characterized in that The insulator in cross section has the shape of a trapezoid, the sides of which are the outer surfaces of the upper and lower walls, while the outer surface of the lower wall is made at an angle of 9°±0.5° to the height of the trapezoid.

In addition, the insulator may have a cross-sectional shape of an isosceles trapezoid with an angle between the sides of 18°±1°.

In addition, at least 2 ribs can be provided in the groove on the bottom wall.

In addition, the insulator can be made of a polyamide-based material.

For the purposes of this application, the names “upper” and “lower” correspond to the position of the insulator in the operating position installed in the rail fastening.

The utility model is illustrated by drawings that depict a particular case of its implementation:

Fig. 1 - pressure plate insulator, axonometry;

Fig. 2 - pressure plate insulator, axonometry;

Fig. 3 - pressure plate insulator, longitudinal section;

Fig. 4 - pressure plate insulator, cross section;

Fig. 5 - rail fastening.

Insulator 1 (Fig. 1, 2, 3, 4) of the rail fastening pressure plate consists of an upper wall 2, a lower wall 3, two side walls 4, 5 and a front wall 6. The internal cavity of the insulator 1 is a groove 7, inside which there is a the lower wall 3 has ribs 8.

Insulator 1 in cross section has the shape of an isosceles trapezoid, the sides of which are the outer surfaces of the upper wall 2 and the lower wall 3. The outer surface of the lower wall 3 is made at an angle α=9°±0.5° to the height of the trapezoid. The angle between the sides of an isosceles trapezoid is β=18°±1°.

Application.

The insulator 1 of the pressure plate 9 is used as part of a rail fastening (Fig. 5), which serves to secure the rail 10 to the reinforced concrete sleeper 11 at the junction of two rails. Rails 10 are connected to each other by pads 12, tightened with bolts 13 and nuts 14. The rail is installed between the anchors 15, while the base of the rail 10 is installed on the gasket 16. Side support insulators 17 are installed between the anchors 15 and rail 10. Insulator 1 is installed on the edge of the pressure plate 9 , after which the plate 9 is installed on the anchor 15 so that the insulator 1 is located on the shelf of the sole of the rail 10. After this, a terminal 18 is installed and fixed in the anchor 15, which acts on the pressure plate 9, which, through the insulator 1 installed on it, presses and fixes the rail 10.

Making the outer surface of the bottom wall at an angle of 9°±0.5° ensures reliable fastening of the rail in the rail fastening, since the insulator is pressed against the flange of the rail base by the entire surface of the bottom wall of the insulator. This is achieved due to the fact that the edge of the pressure plate is made at an angle of 5° and, together with the angle of 9° of the outer surface of the bottom wall, an angle of 14° is obtained, corresponding to the angle of the rail base flange.

Making the insulator with a cross section in the shape of an isosceles trapezoid with an angle between the sides of 18°±1° will also make it possible to securely fasten the rail even when the insulator is inverted.

The ribs in the groove of the insulator allow it to be securely attached to the edge of the pressure plate.

Making an insulator from a polyamide-based material, for example, PA6-L-U5P-1, ensures its strength, as well as elasticity for fastening to the edge of the pressure plate.

Thus, the proposed technical solution ensures strong, reliable fastening of the rails to the base at the junction of two rails due to the design of the insulator, and thereby makes it possible to achieve the stated technical result.

Claims (4)

1. An insulator of a pressure plate of a rail fastening, consisting of an upper wall, a lower wall, two side walls and a front wall, wherein the internal cavity of the insulator is a groove of such a shape as to be able to receive the rib of the pressure plate, characterized in that the insulator has a cross-section the shape of a trapezoid, the sides of which are the outer surfaces of the upper and lower walls, while the outer surface of the lower wall is made at an angle of 9°±0.5° to the height of the trapezoid. 2. The insulator according to claim 1, characterized in that the cross section has the shape of an isosceles trapezoid with an angle between the sides of 18°±1°. 3. Insulator according to claim 1 or 2, characterized in that at least two ribs are made in the groove on the bottom wall. 4. Insulator according to claim 1 or 2, characterized in that it is made of polyamide-based material.