RU218968U1 - Intermediate rail fastening lining - Google Patents

Abstract

The utility model relates to the structure of the upper structure of the railway track, in particular to the lining used as part of the intermediate rail fastening of a separate type and designed to be placed under the rail sole and to install the rail fastening terminal on it. The technical result of the present utility model is to increase the operational reliability of the lining by ensuring the fixation of the lining on the sleeper. The technical result is achieved by using a lining made of a single piece and containing two sub-terminal sections, between which there is a sub-rail section bounded by two transverse flanges, while each flange has a groove for installing the first fastener and terminal, a hole is made on each sub-terminal section of the lining opposite the groove to install the second fastener. Moreover, the end part of the lining has side protrusions, a central protrusion and recesses between them, and the lower part of the flange on the inner side directed towards the rail has a stepped protrusion. f-ly, 6 ill.

Description

Technical field

The utility model relates to the structure of the upper structure of the railway track, in particular to the lining used as part of the intermediate rail fastening of a separate type and designed to be placed under the rail sole and to install the rail fastening terminal on it.

State of the art

From the prior art, a under-rail lining is known (patent of the Russian Federation No. installation of the fastener, the end part of the lining has lateral protrusions, a central protrusion and recesses between them.

Due to the execution of the end part of the lining with protrusions and recesses between them, reliable fixation of the lining with a uniform distribution of the load over its entire surface is ensured, and displacement of the lining along the sleeper is also excluded.

However, said lining involves the use of only one pair of fasteners installed in the holes in its under-terminal sections, which allow you to attach the rail and the lining to the sleeper.

The lining KB-65 (GOST 16277-2016) is also known from the prior art, taken as the closest analogue to the claimed solution, made in one piece and containing two sub-terminal sections, between which there is a sub-rail section, limited by two transverse flanges, with each flange having a groove for installing the first fastener and a terminal, and on each sub-terminal section of the lining opposite the groove, a rectangular hole is made for installing the second fastener.

At the same time, the groove for installing the first fastener is made in the form of a dovetail, which, if there is a hole in the sub-terminal sections of the lining for the second fastener, allows you to separately attach the rail with the lining to the sleeper, as well as the lining to the sleeper.

However, the disadvantages of this lining include the presence of a transition between the hole and the flange on the under-terminal section of the lining, made with a stepped difference, as well as the presence of an edge protrusion on the end wall. Such a constructive lining is technologically complex and labor-intensive. The rectangular hole for the fastener is an additional stress concentrator and leads to a break in the linings.

In addition, the specified lining does not provide for additional fixation with other rail fastening elements and the sleeper, which during operation leads to an uneven distribution of the load, followed by displacement of the lining along the sleeper.

In addition, the lower part of the flange from its inner side, directed towards the rail, for which the spring terminal is hooked to fix the first fastener, is also made without fixation elements, which leads to insufficiently reliable fastening of the rail and the lining to the sleeper, which, when exposed to a load, leads to gradual "loosening" of the attachment point and the need for repair work.

The technical problem of the claimed utility model is to overcome the technical disadvantages inherent in analogues, which leads to the need to create an intermediate rail fastening lining, which ensures an increase in the service life of the rail fastening while maintaining ease of installation of the lining, as well as expanding the arsenal of technical means.

Disclosure of the essence of the utility model

The technical result of this utility model is to increase the operational reliability of the lining by increasing the reliability of fixing the lining of the intermediate rail fastening on the sleeper.

The technical result is achieved by using an intermediate rail fastening pad made as a single piece and containing two sub-terminal sections, between which there is a sub-rail section bounded by two transverse flanges, each flange has a groove for installing the first fastener, each sub-terminal section of the lining opposite the groove is made hole for installing the second fastener. Moreover, the end parts of the lining have lateral protrusions directed downwards, and a central protrusion directed downwards, with recesses between them, and the lower part of the flange on the inner side directed towards the rail has a stepped protrusion.

In a particular embodiment, the groove for installing the first fastener is made in the form of a dovetail. In a particular variant, the hole in the sub-terminal section of the lining is made round with a diameter of 28 ± 4 mm. The round hole for the fastener provides a reduction in stress concentration and reduces the likelihood of lining breakage. In a particular version, the stepped protrusion in the lower part of the flange on the inner side directed towards the rail is made with a radius equal to 1±0.1 mm, a width equal to 3.5±1 mm, and a height equal to 3±1 mm. In a particular variant, the radius of the lining flange in its upper part from the outer side is made equal to 8±1.5 mm, the groove of the lining in the upper part is made with a width equal to 27±2 mm, the height of the vertical part of the groove in the upper part of the lining is made equal to 7± 1 mm, the upper region of the groove is made with a rounding radius of 30 ± 3 mm, in the lower part of the groove on the inner wall there are oppositely directed protrusions, the distance between which is 27 ± 2 mm, while the height of the protrusions is 0.5 ± 0.1 mm. The flange radius in its lower part from the outer side directed away from the rail is made equal to 5±1 mm, the radius of the flange in its upper part from the inner side directed towards the rail is made equal to 5±1 mm. The groove of the lining in the lower part is made with a width equal to 46±2 mm, the lower region of the groove is made with a rounding with a radius equal to 4±1 mm.

The inventive lining, due to the groove on the flange and the presence of a hole in the sub-terminal section, is attached to the sleeper by means of two types of fasteners that allow you to fix the rail with the lining to the sleeper and the lining to the sleeper, which ensures the operational reliability of the lining.

The execution on the end parts of the lining of the side and central protrusions directed downwards, and the recesses between them ensures reliable engagement of the lining with the underlying elements of the rail fastening on the sleeper, which allows you to evenly distribute the load over the entire surface of the lining, and also exclude its displacement along the sleeper, which increases the operational lining reliability.

The implementation of a stepped protrusion on the lower part of the flange from the inner side directed towards the rail makes it possible to obtain additional protection of the flange, protection of the head of the first fastener from turning, and, accordingly, fixation of the spring bar terminal, put on the first fastener, which is installed in the groove made on the flange lining, which leads to an increase in the operational reliability of the lining.

Brief description of the drawings

Figure 1 shows a General view of the lining.

Figure 2 shows a front view of the lining.

Figure 3 shows a top view of the lining.

Figure 4 shows a side view of the lining.

Figure 5 is an enlarged view of the groove made on the flange.

Figure 6 shows a sectional view of the intermediate rail fastening, which includes the inventive lining.

Positions in the drawings indicate the following elements:

1 - lining;

2 - sub-terminal section;

3 - under-rail section;

4 - flange;

5 - rail;

6 - groove;

7 - spring bar terminal;

8 - the first fastener installed in the groove;

9 - hole in the sub-terminal section;

10 - the second fastener installed in the hole in the sub-terminal section;

11 - stepped protrusion in the lower part of the flange;

12 - protrusion at the bottom of the groove;

13 - sleeper;

14 - the first elastic shim;

15 - second elastic shim;

16 - end part of the lining;

17 - central protrusion of the lining;

18 - side protrusion on the end part of the lining;

19 - recesses between the protrusions;

20 - protective adjustment bracket;

21 - rail pad;

22 - washer;

23 - nut.

The inventive lining 1 (Fig.1-5) is made in one piece, close in plan to a rectangular shape. It contains two sub-terminal sections 2, between which there is an under-rail section 3, which is limited on both sides by transverse flanges 4, designed to limit the lateral movements of the rail 5.

Each flange 4 has a groove 6 for installing the first fastener 8 (terminal bolt) and a spring bar terminal 7, and on each sub-terminal section 2 of the lining 1 opposite the groove 6, a round hole 9 is made for installing the second fastener 10 (travel screw).

The groove 6 for installing the first fastener 8 is made in the form of a dovetail.

The radius a of the flange 4 of the lining 1 in its upper part from the outer side, directed away from the rail, is equal to 8±1.5 mm. The radius b of the flange 4 in its lower part on the outer side directed away from the rail is made equal to 5±1 mm, the radius c of the flange in its upper part on the inner side directed towards the rail is made equal to 5±1 mm (figure 2).

At the same time, in the lower part of the flange 4 on the inner side directed towards the rail, a stepped protrusion 11 is made with a radius d equal to 1 ± 0.1 mm, a width e equal to 3.5 ± 1 mm, and a height f equal to 3 ± 1 mm (figure 2).

Groove 6 (Fig.5) lining 1 in the upper part is made with a width g equal to 27±2 mm, the height h of the vertical part of the groove 6 in the upper part of the lining is made equal to 7±1 mm. The upper region of the groove 6 is made with a rounding radius i equal to 30±3 mm.

In the lower part of the groove 6 on the inner wall there are oppositely directed protrusions 12, the distance j between which is 27 ± 2 mm, while the height k of the protrusions 12 is 0.5 ± 0.1 mm.

The groove 6 of the lining 1 in the lower part is made with a width 1 equal to 46 ± 2 mm, the lower region of the groove 6 is made with a rounding radius ra equal to 4 ± 1 mm.

Implementation of the utility model

The lining 1 is installed between the sleeper 13 and the rail 5 in the node of the intermediate rail fastening of the upper structure of the railway track in order to perceive and dampen dynamic loads during the movement of the rolling stock (Fig.6).

Two elastic shims 14 and 15 of the same thickness are installed on the sleeper 13, ensuring close contact of the surface of the shim 14 with the gasket 15. A lining 1 is installed over these gaskets, which has end parts 16 designed to rest against the inclined sidewalls of the elastic shim 15.

The end part 16 has a central protrusion 17, side protrusions 18 and recesses 19 between them (figure 4), due to which the lining is securely fixed with a uniform distribution of the load over its entire surface, and the shift of the lining 1 from under the sleeper 13 is also excluded.

In order to provide the possibility of adjusting the width of the rail track, the lining 1 is equipped with protective adjusting brackets 20 up to 8 mm thick. At the same time, protective adjusting brackets 20 are installed from the side of the under-rail section 3 of the lining 1, and their bent ends cover the flanges 4 of the lining 1. This embodiment allows you to expand the adjustment range of the fastening unit of the lining 1 with the rail 5 and the sleeper 13.

The lining 1 is attached to the sleeper 13 by means of the second fasteners 10 (track screws) screwed into polymer dowels in the body of the sleeper 13.

Next, on the rail section 3 of the lining 1 between the flanges 4, a rail pad 21 is installed, and a rail 5 is installed on top of it.

The rail 5 is fixed with the help of spring bar terminals 7 installed on the flanges 4, which fix the lining 1 and the sole of the rail 5.

The inventive lining can be made by casting from high-strength cast iron, for example, from brand VCh 50 according to GOST 7293-85.

The inventive lining can significantly reduce the vibration of the linings, wear of sleepers and rails, and also reduce the likelihood of rail displacement from the under-rail section, which ensures high reliability in operation, increases the overhaul life of all components of the rail-sleeper grid and reduces the risk of an emergency.

Claims (5)

1. Lining intermediate rail fastening, made in one piece and containing two sub-terminal sections, between which there is a sub-rail section bounded by two transverse flanges, each flange has a groove for installing the first fastener, on each sub-terminal section of the lining opposite the groove, a hole is made for installation of the second fastening element, characterized in that on the end parts of the lining there are side protrusions directed downwards and a central protrusion directed downwards with recesses between them, and the lower part of the flange on the inner side directed towards the rail has a stepped protrusion. 2. Lining according to claim. 1, characterized in that the groove for installing the first fastener is made in the form of a dovetail. 3. Lining according to claim 1, characterized in that the hole in the sub-terminal section of the lining is round with a diameter of 28 ± 4 mm. 4. Lining according to claim 1, characterized in that the radius of the flange of the lining in its upper part from the outside is made equal to 8 ± 1.5 mm, the groove of the lining in the upper part is made with a width of 27 ± 2 mm, the height of the vertical part of the groove in the upper part of the lining is made equal to 7 ± 1 mm, the upper region of the groove is made with a rounding radius of 30 ± 3 mm, in the lower part of the groove on the inner wall there are oppositely directed protrusions, the distance between which is 27 ± 2 mm, while the height of the protrusions equal to 0.5 ± 0.1 mm, the radius of the flange in its lower part from the outer side directed away from the rail is made equal to 5 ± 1 mm, the radius of the flange in its upper part from the inner side directed towards the rail is made equal to 5 ± 1 mm, the groove of the lining in the lower part is made with a width of 46 ± 2 mm, the lower region of the groove is made with a rounding radius of 4 ± 1 mm. 5. Lining according to claim 1, characterized in that the flanges are covered by protective adjusting brackets from the side of the under-rail section.

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