SU1753952A3 - Rail butt joint - Google Patents

Abstract

Use: in butt joints of railway tracks. SUMMARY OF THE INVENTION: The rails installed with a gap are fastened with overlays. Soles of the rails are cut at a right angle to the longitudinal axis of the rails from the edges to the intersection with the planes of projections of the heads of the rails on the soles, are spaced apart in the longitudinal horizontal plane and aligned with the planes of the shear of the heads and necks that are cut obliquely. 1 hp ff, 6 sludge,

Description

FIELD OF THE INVENTION The invention relates to rail butt joints.

The purpose of the invention is to increase reliability,

FIG. 1 shows a rail butt joint, top view, fixed the position of the wheel at the junction of rails; in fig. 2 - rails, horizontal section along the necks with a smooth junction of the cut of the sole and the head with the neck; in fig. 3 - rail butt joint with overlays, top view; in fig. 4 - the same, in the assembly, top view; in fig. 5 - butt pad with a convex neck configuration; in fig. 6 - the same, in the combined state with the rail, face cut.

The rail butt joint contains two rails 2 and 3 mounted with a gap 1, fastened with butt plates 4 and 5. The ends of the rails are cut so that the soles of the 6 rails are cut at a right angle to the longitudinal axis of the rails, and the heads 7 and the neck are at an oblique angle to

longitudinal axis of the rails. In this case, the soles of the rails are cut from the edges to the intersection with the planes of the projections of the heads on the soles.

Butt plates 4 and 5 are made with a thickened neck over the entire length of the plates, and rounding 10 between the oblique 8 and straight 9 cuts (conjugated along radius curves).

The oblique cut 8 at the rail end is made at an angle of 40-45 ° to the longitudinal axis, and the thickness of the neck 11 of the lining is no more than 4/5 of the thickness of its head 12 and 13.

If the angle of the oblique cut of the joint is less than 40 °, the oblique joint is lengthened, which reduces its strength, and when the angle is greater than 45 °, the active zone of the transition of the wheel from one rail 3 to another rail 2 is shortened.

During operation, the heads of the lining wear out, because of this they are periodically necessary to be tightened with them, so an increase in the thickness of the neck more than 4/5 of the thickness of the head deprives the lining of compliance.

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Rail butt joint works as follows.

In the rail joint at the joined rails 2 and 3, the sole b is cut straight, starting from the edge of the sole 6 to the plane of intersection of the projection of the head 7 on the sole 6 of the rails 2 and 3, the rest of the rails is cut obliquely at an angle of 40-45 °. From FIG. 1 that the wheel, rolling off the rail 2 towards the rail 3, smoothly passes the joint, therefore, the joined section of the rails 2 and 3 works under load Like a whole rail.

A straight cut in the base of the 6 rails 2 and 3 plays the role of an abutment, which prevents the seizure of the rails 2 and 3 and the cutting of the butt bolts at high temperature deformations of the rails. In addition, such a design of the joints of the sole 6 provides for the return of the rails to the initial state and the opening of the gap 1 in the joint.

The absence of straight cuts in the head 7 of rails 2 and 3 ensures the free mutual displacement of the heads 7 of both rails 2 and 3 along an oblique cut 8. This is an important factor, because under the influence of the butt-compression force, the metal begins to crumble even in the straight cut rail joints. In the proposed rail joint, this thermal compression force will be perceived only by the soles 6 of the rails 2 and 3, which will cause minor defects in them, but the rolling surfaces of the heads 7 will be intact. To minimize the deflection of the rails 2 and 3 in the area of the joint, lining 4 and 5 reinforced construction. The force of the neck lining and changing the configuration of the plates 4 and 5 reduces the deflection of the rails 2 and 3.

Claims (1)

Invention Formula 1 Rail butt joint containing butt plates located on both sides of the rails and associated with fasteners, with the heads and the neck of the rails at the ends cut in the plan obliquely at an angle to the longitudinal axis of the rails, and the soles in the marginal zone at a right angle to said axis, characterized in that, in order to increase reliability, said sections of rail soles are made up to intersection zones with planes of heads on soles, spaced in a longitudinal horizontal plane and matched with cut planes. wok and necks. 2 Compound according to claim 1, characterized in that said cutting planes of heads with necks and soles are conjugated along radius curves. 3 , - / J 5 // Fig.Z U