RU81967U1 - BUTT GASKET OF INSULATING JOINT - Google Patents

Abstract

A joint strip of an insulating joint, placed between the ends of the rails being joined, stands for non-working sections of the transverse contour of the rails, except for the places of contact with the connecting plates of electrically insulating material, characterized in that it is made of an elastic polymer material containing particles of magnetically soft material uniformly distributed over the volume gaskets, and the profile of the end surface of the butt gasket facing the plates of the insulating material of the insulating joint is repeated digs the profile of the surface of the plates facing the rails.

Description

The utility model relates to the upper structure of a railway track, namely, to structures of rail insulating joints.

The closest is a butt gasket of electrically insulating material (RU 32127, published September 10, 2003), located between the ends of the rails being joined, which stands for non-working sections of the transverse contour of the rails with the exception of places of contact with connecting plates of electrically insulating material. Thanks to this design of the gasket, an artificial barrier is created between the rails against the formation of bridges of metal particles. However, the magnetization of the ends of the rails remains unchanged, as a result of which, over time, so many metal particles can accumulate on the edges of the rails that the size of the conglomerate formed from metal particles can exceed the height of the barrier. And, in the end, bridges will form on the end surfaces of the gasket. Also, the main disadvantage is that the material used for the manufacture of the butt gasket must have some elastic characteristics that can withstand high mechanical loads and vibrations.

The objective of the claimed utility model is to increase the reliability of the rail chain.

The technical result achieved in the process of solving the problem is to reduce the magnetic field strength in the butt gap and to exclude the possibility of a short circuit by metal particles.

The specified technical result is achieved by the butt gasket of an insulating joint located between the ends of the joined rails, which extends beyond the non-working sections of the transverse contour of the rails beyond

with the exception of the contact points with the connecting plates of electrically insulating material, the butt gasket is made of an elastic polymer material containing particles of soft magnetic material uniformly distributed throughout the volume of the gasket, and the profile of the end surface of the butt gasket facing the plates of the electrically insulating material of the insulating joint repeats profile of the surface of the plates facing the rails.

Below, with reference to the attached drawing, describes the proposed butt gasket.

Figure 1 shows a cross section along the butt gasket of an insulating joint. The dashed line shows the rail profile.

To reduce the magnetic field in the gap between the ends of the rails 1, the butt strip 2 of the insulating joint is made of an elastic polymer material that contains a powder of magnetically soft material, the magnetic permeability of which is several times greater than the magnetic permeability of rail steel.

Due to the fact that the basis of the material of the butt strip 2 is an elastic polymer, the butt strip 2 becomes insensitive to compression. Namely, during the “acceleration” of the rails 1 due to the high elasticity, the butt gasket 2 “returns” to its original state, and the gap between the ends of the rails 1 will always be filled with the butt gasket 2, which positively affects the shunting of the magnetic field (decrease in the magnetic field strength by 1 5 times or more). In this case, the elastic polymer can withstand the vibration loads that occur during the passage of trains.

To avoid the formation of bridges of metal particles under the plates 3 of insulating material, the gap 4 between the end surface of the butt strip 2 and the surface of the plate 3 facing the rail 1 should be absent or should be

minimal. This requirement is ensured by the fact that the profile of the end surface of the butt strip 2 facing the plates 3 of the insulating material of the insulating joint repeats the profile of the surface of the plates 3 facing the rails 1.

The listed positive technical results achieved by the claimed features of the utility model are aimed at reducing the magnetic field strength in the butt insulating joint and eliminating the possibility of short circuit by metal particles, therefore, reduce the number of rail circuit failures.

This result was confirmed by testing butt joints in insulating joints with the highest magnetization on the Gorky, Transbaikal, Moscow and South Ural railways. Tests have shown that the magnetic field strength in the gap between the rails decreases by 1.5 times or more in comparison with typical insulating joints with butt joints made of polyamide, and no bridges of metal particles under the overlays were observed.

Claims (1)

A joint strip of an insulating joint, placed between the ends of the rails being joined, stands for non-working sections of the transverse contour of the rails, except for the places of contact with the connecting plates of electrically insulating material, characterized in that it is made of an elastic polymer material containing particles of magnetically soft material uniformly distributed over the volume gaskets, and the profile of the end surface of the butt gasket facing the plates of the insulating material of the insulating joint is repeated digs the profile of the surface of the plates facing the rails.