RU138735U1 - DEVICE FOR ELECTRICAL CONNECTION OF A CABLE TO A RAIL RAIL - Google Patents

Abstract

1. A device for electrically connecting a cable to a rail, including 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 the conductive core of the cable is clamped, providing electrical contact between the core and the grip, characterized in that the grip is made of spring steel, the base of the grip is curved in the direction of formation of the limb bends, while at least one of the bends is made S-image hydrochloric formy.2. The device according to claim 1, characterized in that the device is equipped with an additional clip formed on the curl of the S-shaped limb of the grip of the sole of the rail.

Description

The utility model relates to the field of electrification of railways and can be used to connect an electrical conductor, for example, a conductive core of an earth cable, to a railway 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.

From the prior art it is known, see patent US 6244517, IPC F16B 13/00, publ. 06/12/2001, a device for electrically connecting a cable to a rail, including a hole in the neck of the rail, an anchor threaded element, a cable with a terminal and a nut.

The disadvantages of the device described in the patent US 6244517 are the increased complexity of installation, due to the need to make holes in the neck of the rail, and the low reliability of the electrical connection due to the possibility of disruption of 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 a rail, see patent RU 960751 U1, IPC B60S 9/00, B60K 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 design disadvantages 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 disruption of electrical contact due to unscrewing of the threaded connecting element under the influence of vibrations acting on the device during operation.

A prior art device is also known for electrically connecting an earth cable to a 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 design disadvantages 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 disruption of 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 the utility model, a device for electrical connection of the grounding cable to the rail is taken, see patent RU 1000331 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 closest analogue has the following disadvantages:

- high complexity of manufacturing, due to the presence of a significant number of parts;

- increased installation / disassembly time;

- low reliability of the device, due to the possibility of disruption of electrical contact due to unscrewing the threaded connecting element under the action of vibrations affecting the device during operation.

The objective of the claimed utility model is to increase the manufacturability of production, ease of use and reliability of the device.

The technical result, to which the claimed technical solution is directed, is to create a device for the electrical connection of the cable to the rail, which is characterized by high manufacturability, short installation / disassembly times and increased reliability.

The specified technical result can be obtained in the design of the device, including the cable and the grip of the rail sole, 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 the conductive core of the cable is clamped, providing electrical contact between the core and the grip.

The technical result is achieved in that the grip is made of spring steel, the grip base is curved in the direction of formation of the edge bends, while at least one of the bends is made S-shaped. The device can be equipped with an additional clip formed on the curl of the S-shaped limb of the grip of the sole of the rail.

The essence of the utility model is illustrated by the following drawings.

In FIG. 1 shows an embodiment of gripping a sole of a rail;

In FIG. 2-3 depicts a complete assembly mounted on a rail.

The positions in the Figures 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 - rail;

7 - the sole of the rail;

8 - insulating cable sheath;

9 - conductive cable core;

10 - an additional clip;

11 - insulating cable sheath;

12 - conductive cable core.

To implement the utility model, spring rail grips are made from a spring steel plate, including (see Fig. 1) a base 1, an edge bend 2, an S-shaped edge bend 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.

In an embodiment, both edge clamps may be S-shaped (not shown in FIG.).

In an embodiment, the device may be provided with an additional clamp, which is formed on the curl of the S-shaped limb bend 3 of the grip of the rail sole (see Fig. 3).

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 electrical contact between the core 9 and the grip of the rail sole.

In an embodiment of the device (see Fig. 3) with an additional clamp 10 in the cavity of the clamp 10, the conductive core 12 of the cable 11 is crimped to ensure electrical contact between the core 12 and the grip of the rail sole.

Mounting the device on a rail is performed according to FIG. 2 or 3.

The grip is started under rail 6, the edge of the sole 7 of the rail 6 is hooked with the S-shaped edge bend 3 and, striking the S-shaped 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 S-shaped 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 design of the gripper allows you to install and disassemble the device quickly and without the use of special tools.

The absence of threaded connections in the design of the device favorably affects the reliability of the electrical connection of the conductive core of the cable to the rail when exposed to vibrations affecting the device during operation.

The implementation of the device has confirmed the increased manufacturability of its manufacture, the short installation / dismantling time and the increased reliability of the electrical connection of the conductive core of the cable and rail.

A utility model can be used to connect any electrical conductor to a rail.

Claims (2)

1. A device for electrically connecting a cable to a rail, including 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 the conductive core of the cable is clamped, providing electrical contact between the core and the grip, characterized in that the grip is made of spring steel, the base of the grip is curved in the direction of formation of the limb bends, while at least one of the bends is made S-image hydrochloric shape. 2. The device according to claim 1, characterized in that the device is equipped with an additional clip formed on the curl of the S-shaped limb of the grip of the sole of the rail.

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