WO2018038634A1

WO2018038634A1 - Rail fastening clip

Info

Publication number: WO2018038634A1
Application number: PCT/RU2017/000259
Authority: WO
Inventors: Дмитрий Витальевич ГВИДОНСКИЙ; Алексей Михайлович ПОЛИТОВ
Original assignee: Дмитрий Витальевич ГВИДОНСКИЙ; Алексей Михайлович ПОЛИТОВ
Priority date: 2016-08-24
Filing date: 2017-04-24
Publication date: 2018-03-01

Abstract

The utility model relates to railway track structure, and more particularly to designs of spring clips which can be used in rail fastenings for fastening rails to rail pads which are fixed to a foundation such as sleepers. The present rail fastening clip is configured as a single piece with mirror symmetry about its longitudinal axis L, and comprises a straight portion that lies on the rail, said straight portion transitioning at two opposite ends through bend radii into upwardly arched and outwardly inclined lateral portions of the clip, the continuation of which is comprised of portions which are curved in plan view and which transition into free peripheral portions, the ends of which are oriented toward the straight portion that lies on the rail. What is novel is that the peripheral free portions of the clip are straight and are situated below the level N of the maximum height of the lateral portions of the clip, and the clip, in plan view, smoothly widens in the direction of the portion that lies on the rail via the lateral portions. The technical result is an increase in the reliability of the spring clip, which provides reliable clamping of the foot of a rail to a rail pad.

Description

TERMINAL FOR RAIL FASTENING

Technical field

The utility model relates to the upper structure of a railway track, namely, spring terminal structures used in intermediate rail fastenings for fastening rails to rail rails that are attached to the base, for example, sleepers.

State of the art

The prior art terminal (analogue - RU 94031205, class E01B9 / 30, publ. 08/27/1996), made an integral part of a rod of elastic material. The terminal is made in a shape close to the M-shape, with three loop sections, the central of which is installed in the insulator located on the bottom of the rail.

The disadvantage of this design is the limited use of it and the complexity caused by the installation of the central loop section in the insulator, which reduces the manufacturability of the assembly and the reliability of the terminal.

The prior art spring terminal for rail rail fastening (the closest analogue is RU JY22252287, class E01B9 / 00, E01B9 / 48, publ. 07/10/2005), made of a rod of elastic material with the formation of a B-shaped in plan. The above spring terminal contains a straight rail section, the ends of which are smoothly connected to the side sections, and the arc nashpal sections located behind them are connected to the end sections bent inside the terminal. The part of each arched headway located closer to the end section is made with a bend in a plane perpendicular to the plane of the terminal. The spring terminal described above provides the connection of rails with railway sleepers.

The disadvantage of the above spring terminal is its high rigidity, which does not allow the rail to oscillate relative to the vertical axis of the rail, which leads to rapid wear of the rail head. Also, the above design does not allow creating a high enough force to press the spring clamp to the sole of the rail, which reduces the reliability of the spring clamp and rail fastening as a whole.

Utility Model Disclosure

The objective of the utility model is directed to the development of a spring terminal providing a structurally predetermined force of pressing the rail against the rail lining, as well as the reliability of the intermediate rail fastening.

The technical result consists in increasing the reliability of the spring terminal, which provides a reliable pressing of the rail sole to the rail lining.

The specified technical result is achieved by the fact that the terminal for rail fastening is made of an integral part of a mirror-symmetric shape relative to its longitudinal axis L and contains a straight-line rail section that passes from two opposite sides along the radii of curvature into arcuate laterally curved upward and outwardly deflected lateral sections of the terminal, the continuation of which are arcuate in plan areas passing into free peripheral areas directed 5 with their ends towards the location of the straight-line rail section of the terminal, according to the utility model, the free peripheral sections of the terminal are straight and located below the level of maximum rise of the side sections of the terminal, while the terminal is made in plan smoothly expanded by the side sections towards the location of the rail section.

The railroad section and the parts of the transition of the lateral sections of the terminal into arched sections in the plan are located on the same plane XX.

Parts of the transition arched in terms of sections of the terminal in its 15 free peripheral sections are made above the plane XX.

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

twenty

The essence of the technical solution is illustrated by the figures:

FIG. 1 - shows the claimed terminal for rail fastening, General view.

FIG. 2 - view A of figure 1.

25 Fig. C - shows the terminal for rail fastening, top view (in plan).

Figure 4 - shows a view in figure 3.

Figure 5 - shows a view of Figure 3.

6 - shows a view of D in figure 3.

zo Fig. 7 schematically shows a rail fastening with two terminals installed. 5 The above figures show:

1 - terminal;

2 - rail section of terminal 1;

For, 4a - side sections of terminal 1;

3b, 4b — arcuate sections of terminal 1 in plan;

yu Zs, 4s - free peripheral sections of terminal 1,

3d is the part of the transition of the lateral section 3a to the arcuate in plan section 3b;

3f is the part of the transition of the arcuate in the plan section Zb to the free peripheral section 3 from terminal 1;

15 4d is a part of the transition of the lateral section 4a to the arcuate in plan section 4b;

4f is a part of the transition of the arc-shaped section 4b into the free peripheral section 4c of terminal 1;

5 - fastener;

20 6 - rail lining;

6a - the base of the rail lining 6;

7 - base;

8 - rail;

8a - the sole of the rail 8;

25 8b - rail head 8;

9 - washer;

L is the longitudinal axis of terminal 1;

N is the level of maximum lift of the side sections Za, 4a of terminal 1; XX is the plane.

zo

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, 5 without going beyond the essence and scope of the present utility model. Accordingly, the explanatory figures and the detailed description of the rail fastening terminal are illustrative, but not restrictive. К Terminal 1 (see Fig. 1-6) for railway rail fastening is made by a single integral part of a mirror-symmetric shape relative to its longitudinal axis L.

Terminal 1 contains a rectilinear rail section 2, passing from two opposite sides along the radii

15 roundings to the lateral sections Za and 4a, the continuation of which is the corresponding curved sections Zb and 4b turning into the corresponding free peripheral sections Zc and 4c directed by their ends towards the location of the aforementioned straight-line rail section 2 (see figures

20 1, 2, 3).

The lateral sections Za, 4a of terminal 1 are made curved upward and deflected outward (see figures 5, 6).

The peripheral free sections Zc, 4c of terminal 1 are made rectilinear and are located almost parallel to each other, 25 being closer to each other at a distance Z, which allows the rod part of the fastening element 5 connecting the under-rail lining 6 to the base 7 to be used between them, which is used as , in particular, sleepers.

The peripheral free sections Zc, 4c of the terminal 1 z are located below the level N of the maximum rise of the lateral sections Za, 4a of the terminal 1, and also slightly above the plane X-X, on which the straight-line rail section 2 and the transition parts 3d, 4d of the corresponding lateral 5 sections 3a and 4a to arcuate in plan sections 3b and 4b of terminal 1 (see figures 4, 5).

Parts 3f, 4f of the transition of the corresponding arc-shaped sections Zb, 4b into the free peripheral portions Zc, 4c of terminal 1 are made slightly higher than the X-X plane.

The terminal 1 is made in plan smoothly extended by the lateral sections Za, 4a in the direction of the location of the rail section 1, which increases the contact area of the straight rail section 2 with the sole 8a of the rail 8.

Terminal 1 is made of spring from a rod of durable spring,

15 of the elastic material, in particular steel, according to the existing proven technology by the method of bending. In a specific example of execution, the bar is made of a circular cross section.

The above design provides structurally specified springing of the side sections Za, 4a and the necessary elastic

20 deformation of terminal 1 under the influence of loads. Thus, a reliable pressing of the rail portion 2 to the sole 8a of the rail 8 is ensured and, accordingly, pressing of the said sole 8a to the rail lining 6.

In the construction of the upper structure of the railway

25 (see figure 7), the terminals 1 are installed on the sub-terminal sections of the rail liner 6. In the installed position of the terminal 1, its free peripheral sections Zc, 4c are pressed through the washer 9, in particular, electrically insulating, by the fastener head 5 towards the base 6a of the rail liner 6; the rail zo section 2 presses the sole 8a of the rail 8 against the rail liner 6, which is securely connected to the base 7; parts 3d, 4d of terminal 1 are supported on the base 6a of the rail support 6. As fasteners 5 can be used screws, screws or track bolts or other elements, devices that perform a similar function with a similar or superior result.

The above-described design increases the reliability of the terminal 1, which provides reliable transmission of the tightening force of the fastening element 5 to the sole 8a of the rail 8 and, thus, the reliable pressing of the said sole 8a to the rail lining 6. In addition, the above-described terminal 1 compensates the elastic deformation of the elements by springing its sections. rail fastenings that occur under the influence of the weight of the rolling stock.

The elastic properties of the above terminal 1 allow the rail 8 to oscillate with small amplitude relative to its vertical axis at the moment of contact with the wheelset, which can significantly reduce the wear of the head 8b of the rail 8.

Claims

5 FORMULA

1. A rail fastening terminal made by an integral part of a mirror-symmetric shape with respect to its longitudinal axis L and containing a rectilinear rail section passing from two opposite sides along the radii of curvature u to the arcuate lateral portions of the terminal, the continuation of which are arcuate in plan sections that go into free peripheral areas directed by their ends towards the location of the rectilinear rail section of the terminal, characterized by m

15 that the free peripheral portions of the terminal are straightforward and are located below the level N of the maximum rise of the terminal terminal sections, while the terminal is made in plan smoothly expanded by the side sections toward the location of the rail section.

20 2. The terminal for rail fastening according to claim 1, characterized in that the rail section and the parts of the transition of the side sections of the terminal into arc-shaped sections are located on the same plane XX.

3. The terminal for rail fastening according to claim 1, characterized in that the parts of the transition arched in terms of sections in the free peripheral sections of the terminal are made above the plane XX.

zo