RU2793448C1 - Device for fixing a short circuit indicator on a wire of an overhead power line - Google Patents

Abstract

FIELD: electric power industry.

SUBSTANCE: invention is used to install a short circuit indicator (SCI) on the wire of an overhead power line (OPL). The device for fastening the SCI to the wire of an OPL line is located in the upper part of the square body of the SCI. It contains a spring-loaded clamping bracket with a clamp for the wire, movably mounted on the axis, and a support bracket with a similar clamp made integrated with the base. The support bracket has an axis with a spacer rod movably fixed on it. The device has a hole in the clamping bracket and an inclined slot in the base. One end of the spring is L-shaped and placed in the hole of the clamping bracket. The protruding part of the L-shaped end of the spring is bent. The second end of the spring is U-shaped and placed in the inclined slot of the base. The clamping bracket is provided with an axis with an additional spacer rod movably fixed on it, which interacts with the spacer rod of the support bracket.

EFFECT: simplification of the design implementation of the device while reducing its weight.

3 cl, 4 dwg

Description

The invention relates to the field of electric power industry and can be used to install a short circuit indicator (SIC) on a wire of an overhead power line (OHTL).

From the prior art devices for IKZ of various types are known, which can be installed on the wire of high-voltage power lines without turning off the current supply, using insulating rods.

A similar device is known, consisting of two swivel brackets, which, when installed in the glass of the insulating rod, are bred and held in the unclenched state until the brackets of the glass of the insulating rod are installed on the wire of the high-voltage power line. When the clamp is approached to the wire, the fitter presses the clamp bed against the wire with an upward movement, while the holding clamps of the clamp in the divorced state disengage from the clamp clamps of the rod and the clamp clamps tightly cover the wire, (see - OKB ASTRO. short circuit of the high voltage transmission line Astron-7080. Operation manual. ALKYA. 425148.001 RE. Moscow, 2009)

The disadvantage of the analogue is that when removing the IKZ from the wire, the grip of the rod clings to the IKZ entered into it and the installer, by moving the rod down, breaks the IKZ from the wire. In this case, the force applied to remove the IKZ from the wire is approximately 30 kg s (300 N)

A similar device is known, consisting of one clamping bracket that presses the wire to the base of the clamp, which is part of the IKZ body. (see - Installation of IKZ "Antraks" without turning off the line voltage https://youtu.be/xeOEj15pJVY)

The disadvantage of the analogue is that when removing the IKZ from the wire, you have to exert great effort, which requires great physical exertion from the performer, in addition, the operations are difficult to perform and create an increased risk of injury when working at height.

A similar device is known for attaching a short circuit indicator (IKZ) to an overhead power line wire, installed in the upper part of the IKZ case, which contains two brackets: clamping and thrust, designed to cover and hold the overhead power line wire between them, the brackets are mounted on axes, fixed on the base of the clamp, and have the ability to rotate on these axes, while the clamping bracket is equipped with a spring designed to move this bracket towards the stop bracket, the stop bracket is equipped with a spacer guard rod capable of holding the stop bracket from the clamping bracket at a distance that allows the passage of the wire into the clamping space of the brackets, and the stop bracket is equipped with a folding stop lever that holds it in a stationary state relative to the base of the clamp in the “ICZ on the wire” position, while in the “ICZ on the wire” position there is a gap between the clamping bracket and the stop on the clamp base , which allows you to move the stop bracket from its place when the folding stop lever is turned upwards due to the force developed by the clamping bracket (see RF patent No.

The disadvantage of analog is that the device is very complicated.

The closest device for the same purpose to the claimed invention in terms of a combination of features is a device for attaching a short circuit indicator (SIC) to an overhead power line wire, installed in the upper part of the ICZ case, which contains a clamping bracket with a recess for the wire, mounted movably on an axis and equipped with mounted on the same axis by a spring, a support bracket with a similar recess, having an axis with a spacer rod movably fixed on it, interacting with the stop of the clamping bracket, a folding thrust lever is placed on the body, and the support bracket is made integral with the body, and the spring of the clamping bracket made interacting with the short end of the folding thrust lever, and the top of the brackets is made with slots, in addition, the edges of one bracket are placed opposite the slots of the other bracket, (see RF patent No. 2778935 IPC H01R 4/00, H02G 7/05, publ. Bulletin No. 25 selected for the prototype)

The disadvantage of the prototype is that the device is very complex. In addition, the brackets are very long and the base of the device is very thick.

The technical result is that the device is simplified and its weight is reduced.

The specified technical result is achieved by the fact that the device for fastening the short circuit indicator (SCI) to the wire of an overhead power line, located in the upper part of the SCI housing, containing a spring-loaded clamping bracket with a recess for the wire, mounted movably on the axis, and made in one piece with the base is a thrust bracket with a similar recess, having an axis with a spacer rod movably fixed on it, the peculiarity is that, a hole in the clamping bracket and an inclined slot in the base are introduced, and the L-shaped end of the spring is placed in the hole of the clamping bracket, and the U-shaped end of the spring is located in the inclined slot of the base, in addition, the clamping bracket is equipped with an axis with an additional spacer rod movably fixed on it, which interacts with the spacer rod of the thrust bracket

Additionally, the claimed device for fastening the short circuit indicator to the wire of the overhead power line is characterized by the fact that the L-shaped end of the spring placed in the hole of the clamping bracket is bent.

Additionally claimed device for mounting a short circuit indicator (SIC) on the wire of an overhead power line, is characterized by the fact that the body of the SIC is made, for example, square

The claimed invention is illustrated by drawings.

Fig. 1 - device, at the time of installation on the wire of the power line.

Fig. 2 - a device installed on a power line wire.

Fig. 3 - device, at the time of removal from the wire of the power line.

Fig. 4 - an insulating rod with a square sleeve for installation and removal (IKZ) on a reduced scale.

The drawings show a spring 1, a clamping bracket 2 with a notch 3 for a wire 4, mounted movably on an axis 5, and made in one piece with the base 6, a stop bracket 7 with a similar notch 8 for a wire 4, having an axis 9 with a movably fixed on it spacer rod 10 Clamping bracket 2 contains an axis 11 with an additional spacer rod 12 movably fixed on it. Hole 13 in clamping bracket 2, inclined slot 14 in base 6. L-shaped end 15 of spring 1 is placed in hole 13 of clamping bracket 2 must be bent, so that it does not fall out of the hole 13, and the U-shaped end 16 of the spring 1 is placed in the inclined slot 14 of the base 6. The insulating rod 17 at the upper end contains a square cup 18 (according to the shape of the IKZ body), One of the faces 19 of which is higher than the other three.

The device works as follows.

Installation of IKZ on a wire of a power line. The initial position of the device is shown in figure 1. The IKZ is installed in a square cup 18 of the insulating rod 17 so that the spring 1 is located opposite the high edge 19. By lifting the insulating rod 17, the fitter inserts the wire 4 between the brackets 2 and 7. With further lifting, the wire 4 presses on spacer rod 10 and on an additional spacer rod 12, which abut against each other with their ends. The connection is disassembled. The clamping bracket 2 rotates clockwise under the action of the spring 1 and securely clamps the wire 4, which is placed in the recesses 3 and 8. Now the insulating rod 17 can be lowered (see Figure 2).

Removal of IKZ from a wire of a power line.

The insulating rod 17 is raised. Moreover, the high edge 19 should be located under the spring 1. With further lifting of the insulating rod 17, the high edge 19 of the square cup 18 presses from below on the U-shaped end 16 of the spring 1, which, under the action of the applied force, begins to rise and slide along the inclined surface inclined slot 14. As a result, the U-shaped end 16 of the spring 1 is removed from the inclined slot 14 of the base 6. We lower the insulating rod 17 slightly. hither and thither. The rotational force of the rod 17 will displace the clamping bracket 2 and the clamp will open (see figure 3).

Thus, the above information testifies to the fulfillment of the following set of conditions when using the claimed invention:

- a tool that embodies the claimed invention in its implementation, is intended for use in the electric power industry for installing a short circuit indicator (SIC) on the wire of an overhead power line (OHTL) and for removing it from the wire (OHTL).

- for the claimed device in the form as it is described in the independent paragraph of the stated claims, the possibility of its implementation using the means and methods described in the application or known before the priority date is confirmed;

- a tool that embodies the claimed invention in its implementation, capable of achieving the technical result perceived by the applicant.

- the advantage of the invention is that the device is simplified and its weight is reduced.

Therefore, the claimed invention meets the condition of "industrial applicability".

Claims (3)

1. A device for attaching a short circuit indicator (IKZ) to an overhead power line wire, located in the upper part of the IKZ case, containing a spring-loaded clamping bracket with a notch for the wire, mounted movably on the axis, and made in one piece with the base of the stop bracket with a similar a recess having an axis with a spacer rod movably fixed on it, characterized in that the IKZ body is made square, a hole is introduced in the clamping bracket and an inclined slot in the base, and the L-shaped end of the spring is placed in the hole of the clamping bracket, and the U-shaped end of the spring placed in an inclined slot of the base, in addition, the clamping bracket is provided with an axis with an additional spacer rod movably fixed on it, which interacts with the spacer rod of the thrust bracket. 2. A device for attaching a short circuit indicator to an overhead power line wire according to claim 1, characterized in that the L-shaped end of the spring located in the hole of the clamping bracket is bent. 3. A device for attaching a short circuit indicator (SIC) to the wire of an overhead power line according to claim 1, characterized in that the SIC body is made, for example, square.

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