RU146161U1 - DEVICE FOR ELECTRICAL CONNECTION OF A CABLE TO A RAIL RAIL - Google Patents

Abstract

A device for electrically connecting a cable to a rail, including a cable and a rail sole made of a steel plate, with a base, edge bends formed in one direction, and a clamp in the cavity of which the conductive core of the cable is clamped, the grip base being bent in the direction of formation of the edge bends, and at least one of the bends is made S-shaped, characterized in that the end part of the bend of the S-shaped is provided with a longitudinally oriented arc th element.

Description

The utility model relates to the field of electrification of railways, in particular, to the design of a device for electrically connecting a cable to a rail.

Grounding between the railroad track and supporting structures of the contact network is necessary to ensure reliable operation, protection against short circuit currents, electrical safety of staff and others, the functioning of rail lock chains and electrical centralization, limiting leakage of traction currents in DC sections.

The prior art device for the electrical connection of the grounding cable with the rail, see patent RU 96075 U1, IPC B60S 9/00, B60R 11/00, publ. 07/20/2010, including a clamping terminal with a hole connected by means of a threaded element, a connector with a hole and a gripper.

The disadvantages of the design according to patent RU96075U1 are the high complexity of manufacturing, due to the presence of a significant number of parts, increased installation / disassembly times and low reliability of the device, due to the possibility of breaking electrical contact due to unscrewing of the threaded connecting element under the influence of vibrations acting on the device during operation.

The prior art device for the electrical connection of the grounding cable with the rail, see patent RU 127000 U1, IPC B60M 1/225, B60M 1/36, publ. 04/20/2013, including the capture of the sole of the rail, the clamp with a through hole and a threaded connecting element. The grip of the rail sole is made of a metal plate with edge bends formed in one direction, while one of the bends in the plan partially repeats the contour of the section of the rail sole, and the other is bent at a right angle.

The disadvantages of the design according to the patent RU 127000 U1 are the high complexity of manufacturing, due to the presence of a significant number of parts, increased installation / disassembly times and low reliability of the device, due to the possibility of breaking electrical contact due to unscrewing of the threaded connecting element under the influence of vibrations acting on the device during operation.

The prior art also known a device for the electrical connection of the grounding cable with the rail, see patent RU 100033 U1, IPC B60S 9/00, publ. 12/10/2010. The device includes a clamping terminal, a grip on the sole of the rail and a threaded connecting element. The grip is made of a metal plate and is equipped with edge bends formed in one direction, as well as a clamp in the cavity of which a conductive core of the cable is clamped, providing electrical contact between the core and the grip.

The disadvantages of the design according to the patent RU 100033 U1 are the high complexity of manufacturing, due to the presence of a significant number of parts, increased installation / disassembly times and low reliability of the device, due to the possibility of breaking electrical contact due to unscrewing of the threaded connecting element under the influence of vibrations acting on the device during operation.

For the closest analogue of a utility model, a device for electrical connection of a cable to a rail is taken, see patent RU 138735 U1, IPC H01R 4/18, publ. 03/20/2014. The device includes a cable and a rail sole grip made of a metal plate with a base and edge bends formed in one direction, as well as with a clamp in the cavity of which a conductive core of the cable is clamped, providing electrical contact between the core and capture. The analog device differs from the known ones in that the grip is made of spring steel, the grip base is curved in the direction of formation of the limb bends, and at least one of the bends is S-shaped.

The disadvantage of the design of the analogue is the increased transition contact resistance between the grip and the rail due to insufficient bending stiffness of the S-shaped.

The objective of the claimed utility model is to improve the quality of the electrical connection between the conductive core cable and the rail.

The technical result, which the claimed technical solution is aimed at, is to reduce the electrical resistance between the conductive residential cable and the rail.

The specified technical result can be obtained in the design of the device for the electrical connection of the cable with the railway rail, including the cable and the grip of the sole of the rail, made of a steel plate, with a base, edge bends formed in one direction, and a clamp in the cavity of which a conductive is clamped cable core, while the base of the grip is curved in the direction of formation of the edge bends, and at least one of the bends is made S-shaped.

The technical result is achieved in that the end portion of the limb of the S-shaped shape is provided with a longitudinally oriented arcuate element.

Due to the presence of a longitudinally oriented arcuate element at the end of the edge bend of the S-shape, an increased stiffness of the bend of the S-shape is provided and, as a result, better contact of the cable core with the rail.

The utility model is illustrated by the following drawings.

In FIG. 1 shows a grip of a rail sole;

In FIG. 2 shows a complete assembly mounted on a rail.

The positions in the drawings indicate:

1 - the base of the capture of the sole of the rail;

2 - marginal limb gripping the sole of the rail;

3 - S-shaped marginal limb gripping the sole of the rail;

4 - clamp;

5 - the cavity of the clamp;

6 - railway rail;

7 - the sole of the rail;

8 - insulating cable sheath;

9 - conductive cable core;

10 - arcuate element.

To implement a utility model from a spring steel plate, a rail sole is gripped, including (see Fig. 1) a base 1, edge bends 2, 3 and a clamp 4 with a cavity 5.

The base 1 is bent along an arc in the direction of formation of the limb bends 2, 3.

At the end of at least one of the limb bends 2, 3, an arcuate element 10 is formed.

An anti-corrosion conductive coating is applied to the grip surface of the rail sole. Strip the end of the cable from the insulating sheath 8, freeing a portion of the conductive core. In the cavity 5 of the clamp 4, the conductive core 9 of the cable 8 is crimped to ensure reliable electrical contact between the core 9 and the grip of the rail sole.

Mounting the device on a rail is performed according to FIG. 2.

The grip is started under the rail 6, the edge of the sole 7 of the rail 6 is hooked by the edge bend 3 and, striking the edge bend 3 in the direction of the bottom of the rail 7, snap it on the edge of the sole 7, after which the device is fixed by impact on the edge bend 2 towards the bottom of the rail 7 .

To dismantle the device, they hit the edge bend 3 in the direction of the bottom of the rail 7, after which a top-down impact on the edge of the bottom of the rail 7 along the edge bend 2 separates the cable grip from the bottom of the rail.

The practical implementation of the device confirmed the receipt of the technical result, which consists in reducing the electrical resistance between the conductive residential cable and the rail.

Claims (1)

A device for electrically connecting a cable to a railway rail, including a cable and a rail sole grip made of a steel plate, with a base, edge bends formed in one direction, and a clamp in the cavity of which the conductive core of the cable is clamped, while the grip base is curved in the direction of formation of the edge bends, and at least one of the bends is made S-shaped, characterized in that the end part of the bend of the S-shaped is provided with a longitudinally oriented arc th element.

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