RU2708819C2 - Railway rail - Google Patents

Abstract

FIELD: construction.SUBSTANCE: invention relates to the upper structure of a railway track. Rail comprises sole, head and neck. Rolling surface on the head is shaped as a stud. Stud is placed either in centre, or on edge, or in middle position.EFFECT: longer service life of the rail.1 cl, 3 dwg

Description

The invention relates to railway transport, namely to the upper structure of the track.

In the prior art, the generally accepted wide-root type rail is known, consisting of a head, sole and neck. The upper surface of the rail head - the skating surface, on a new rail, has a curved convex outline.

Disadvantages: Wear makes the convex rolling surface flat, while the line of contact of the wheel with the rail increases, which significantly increases the resistance to movement of the wheel having a conical rim profile and the likelihood of microcracks on the rolling surface along the edges of the contact.

The invention is based on two tasks:

- the first is to make the contact of the wheel with the rail optimal throughout the entire life cycle of the rail;

- the second is to ensure that the wheels of the wheelset are in contact with the rails with the best conditions for interaction, both in straight and in curved sections of the track.

Instead of one universal rail, it is proposed to produce three specialized ones. The rails, in addition to the upper surface of the head, are carried out along the profile of the mating standard rail. In the manufacture on the upper surface of the head to form a spike, and the rolling surface to form on the upper side of the spike. Place the spikes on the rails: on the first - in the center, on the second - with the edge, in the third in the middle position in relation to the central and extreme spikes. On the working rails, the spike can be formed by machining.

The proposal is implemented as follows. In straight and flat curves set rails with a spike in the Central part of the head. In curves of average radii, a rail with an average tenon position is installed on the outer thread, and rails with a central or middle tenon position are installed in the inner thread, depending on the radius of the curve. In curves of small radii, a rail with an extreme position of the spike is installed on the outer thread, and rails with an average position of the spike are installed in the inner thread. On the outer threads, the rails are installed with a spike closer to the ridge, and on the inner threads, respectively, further from the ridge. It is allowed to use rails with spikes on metro tracks and on classic turnouts without track modernization (without changing the armature).

Technical result: Increased rail resource, reduced resistance to movement, reduced costs for the restoration of the rolling surface of the rail.

The figures show the elements of the rail: sole (1), neck (2), head (3), skating surface (4), central tenon (5), middle tenon (6), extreme tenon (7); outer thread rails: with a 1/20 (8, 10) base, with a 1/27 - 1/80 (9) base, without a base (outer thread rail of a typical turnout switch) (11); inner thread rails: with 1/20 (12) gusset, with 1/11 gusset - 1/16 (13) gusset, without gusset (inner rail of a typical turnout switch) (14), with 1/10 gusset (15).

Figure 1 illustrates a rail with a central spike.

Figure 2 illustrates rails with medium spikes in interaction with a pair of wheels in curves of average radii.

The figure 3 illustrates the rails with the middle and extreme spikes in interaction with the wheelset in curves of small radii.

Claims (1)

Rail rail, including a head, a sole and a neck, characterized in that on the upper surface of the head has a spike that is located in the center, either with the edge or in the middle position with respect to the central and extreme spikes, the skating surface is formed on the upper side of the spike.

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