RU176878U1 - BUTT INSULATING LAYING FOR RAILS - Google Patents

Abstract

The utility model relates to devices of rail butt joints of the upper structure of a railway track and can be used for electrical isolation of track sections. The butt insulating pad for the rails contains the upper and lower heads for interfacing with the mating sections of the rail, a neck with mounting holes, and the pad is provided with a metal plate lined with an electrically insulating layer. New is the implementation of an electrically insulating layer of rubber vulcanized to a metal plate. The technical result is to increase the operational reliability of the butt insulating two-headed rail linings. 6 c.p. f-ly, 4 ill.

Description

Technical field

The utility model relates to devices of rail butt joints of the upper structure of a railway track and can be used for electrical isolation of track sections.

State of the art

The prior art known butt insulating two-headed pad for rails (see analogue - RF patent for the invention No. 2297483, IPC EB 11/36, B60M 5/00 publ. 04/20/2007) made of metal. In the rail fastening, the two-headed pad is mated to the rail through an electrically insulating gasket made on the basis of polyamide. This design is multi-component, which complicates the maintenance of the upper structure of the railway track,

The prior art known butt insulating two-headed pad for rails (see the closest analogue is the patent of the Russian Federation for utility model No. 29533, IPC ЕВВ 11/54, publ. 05/20/2003) containing a metal plate with holes for fasteners with two contact ledges for interaction with the sections of the mating neck with the head and sole of the rail. In this case, the plate is lined with a layer of electrically insulating material, which can be used thermoplastic polyurethane with high impact strength or polyamide 6, modified with an elastomer in the amount of 3-30%. Moreover, the insulating material over the entire area of the two-headed lining is made of almost the same thickness.

The well-known two-headed pad performs its function in the upper structure of the railway track. However, the formation of the upper and lower heads from a metal plate coated with a relatively thin electrically insulating layer can lead to a crushing of the latter. Also, the specified design of the metal plate increases the mass of the lining, which leads to an increase in the load on the end sections of the rail and the accumulation of fatigue defects.

Utility Model Disclosure

The technical result is to increase the operational reliability of the butt insulating two-headed rail linings.

The specified technical result is achieved in the butt insulating pad for the rails, containing the upper and lower heads for interfacing with the corresponding sections of the rail, a neck with mounting holes, while the pad is equipped with a metal plate lined with an insulating layer, according to a utility model, the insulating layer is made of rubber, vulcanized to a metal plate.

The insulating layer in the local areas of the metal plate has a different thickness.

The metal plate can be made with a thickness in the range from 16 to 20 mm and a height in the range from 95 to 105 mm of steel 55.

Most of the upper head in the cross section of the butt insulating lining is formed by an electrically insulating layer.

Most of the lower head in the cross section of the butt insulating lining is formed by an electrically insulating layer.

The peripheral upper portion of the metal plate is made bent into the area of the upper head.

The peripheral lower portion of the metal plate is bent into the area of the lower head.

The set of features of the claimed utility model is in a causal relationship with the achieved technical result and is presented in an independent paragraph of the utility model formula.

Brief Description of Explanatory Figures

FIG. 1 - shows a butt insulating pad for rails, a General view.

FIG. 2 - shows a section AA of figure 1.

FIG. 3 - depicts rails connected by butt insulating pads as part of an electrically insulating butt joint.

FIG. 4 - shows a cross section bb of figure 3.

The above figures show:

1 - butt insulating pad;

2 - upper head;

3 - lower head;

4 - neck;

5 - mounting holes;

6 - fasteners;

7 - a metal plate;

7a - the upper peripheral section;

7b — lower peripheral region;

8 - electrical insulating layer;

9 - bevel of the upper section of the lining 1;

10 - rail;

11 - electrical insulating gasket;

12 - locking plates;

13 - nuts.

It should be understood that specialists in the art will be able to offer other options for implementing the utility model and that some of its details can be changed in various other aspects, without going beyond the essence and scope of the present utility model, respectively, figures and a detailed description of the butt insulating lining for rails It is illustrative but not restrictive.

The butt insulating pad 1 (hereinafter - the pad) can be used in the upper structure of the railway track for electrical isolation of sections of the track.

The overlay 1 is an integral part and contains: upper 2 and lower 3 heads; a neck 4 in which fastening holes 5 are made for fasteners 6 (see Fig. 1).

The lining 1 contains a metal plate 7, lined on all sides with an electrically insulating layer 8 made of rubber vulcanized to the indicated metal plate 7. The specified rubber may have the following properties: Shore A hardness in chapels 65-90; tensile strength - not less than 10 MPa; working conditions from -60 ° C to + 80 ° C.

The peripheral upper 7a and lower 7b sections of the plate 7 are slightly bent into the zones of the upper 2 and lower 3 heads of the lining 1, respectively (see Fig. 2).

The mechanical strength of the structure is achieved through a metal plate 7 made of a thickness in the range from 16 to 20 mm and a height in the range from 95 to 105 mm of steel 55. In a specific embodiment, the metal plate is made in a height of 100 mm.

The upper section of the lining 1, in particular the insulating layer 8, which is not in contact with the rail 10, has a bevel 9 for passing the wheel wheel flange of the train.

Fixing holes 5, made in a metal plate 7 in the neck region 4, are coated with an electrically insulating layer 8.

The insulating layer 8 in the local areas of the metal plate 7 has a different thickness. Figure 2 shows that in the cross section of the lining 1, most of the upper 2 and most of the lower 3 heads of the lining 1, designed to pair, respectively, with the upper and lower sections of the rail 10, are formed by an electrically insulating layer 8 of vulcanized rubber. The thickness of the electrical insulating layer of the upper head 2 is in the range from 10 to 14 cm, and the lower head 3 is in the range from 7 to 14 cm. The above construction allows tightening of each lining 1 to the rails 10 when tightening the fasteners 6 and minimizes the possibility abrasion of the specified upper 2 and lower 3 heads, which generally increases the reliability of the lining 1 and increases the working life of the rail butt joint.

The shape of the outer surface of the upper 2 and lower 3 heads of the lining 1 is close to the mating shape of the sections of the rail 10. This allows you to optimally fit the lining 1 in the grooves of the rails 10, which contributes to the redistribution of mounting stresses in these rails 10.

In the upper structure of the railway track (see Figs. 3, 4), an insulating gasket 11 is installed in the gap between the rails 10. Then two of the above-described plates 1 are installed on both sides of the rails 10 and pulled together with fasteners 6, in particular, bolts passed through the mounting holes in the rails 10, the mounting holes 5 in the necks 4 of the plates 1 and the mounting holes of the locking plates 12, the last of which are located on the outside of the plates 1. These fasteners 6 are tightened with nuts 13 through the plate washers, mating nnye with locking plates 12.

The above pad 1 is characterized by mechanical strength, relatively small mass, tight and reliable fit to the rails 10.

When passing electric vehicles at the junction of the rails 10, the joint work of the electrical insulating strip 11 and the above-described overlays 1 is ensured, as a result of which the possibility of aggressive media entering the electrical insulating joint is virtually eliminated, which increases the safety of passenger and freight transportation.

Claims (7)

1. A butt insulating pad for rails comprising an upper and lower head for interfacing with mating sections of a rail, a neck with mounting holes, the pad being provided with a metal plate lined with an electrically insulating layer, characterized in that the electrically insulating layer is made of rubber vulcanized to metal plate. 2. The joint insulating pad for rails according to claim 1, characterized in that the insulating layer on the local sections of the metal plate has a different thickness. 3. A butt insulating pad for rails according to claim 1, characterized in that the metal plate is made in a thickness in the range from 16 to 20 mm and a height in the range from 95 to 105 mm from steel 55. 4. A butt insulating pad for rails according to claim 1 or 3, characterized in that most of the upper head in the cross section of the butt insulating pad is formed by an electrically insulating layer. 5. The butt insulating pad for rails according to claim 1, characterized in that the majority of the lower head in the cross section of the butt insulating pad is formed by an electrically insulating layer. 6. The joint insulating pad for rails according to claim 1, characterized in that the peripheral upper portion of the metal plate is made bent into the area of the upper head. 7. The joint insulating pad for rails according to claim 1, characterized in that the peripheral lower portion of the metal plate is made bent into the area of the lower head.

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