RU2778935C1 - Clamp for fixing the short circuit indicator to the overhead power line wire - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: invention relates to the field of electric power industry to install a short circuit indicator on an overhead power line wire. The clamp contains a clamping bracket mounted movably on the axis and equipped with a spring mounted on the same axis. There is also a support bracket made as a whole with the body. There are corresponding recesses on the brackets. A spacer rod is movably fixed on the axis of the support bracket, interacting with the stop of the clamping bracket. A folding thrust lever is placed on the body, interacting with the short end of the spring. The top of the brackets is made with slots, and the edges of one bracket are placed opposite the slots of the other bracket.

EFFECT: simplification of the design implementation of the clamp.

2 cl, 6 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, clamps for IKZ of various types are known, which can be installed on a wire of a high-voltage power line without turning off the current supply, using insulating rods.

A similar clamp 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 grip 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.

The closest device for the same purpose to the claimed invention in terms of a combination of features is a clamp for attaching a short circuit indicator (SIC) to an overhead power line wire, installed in the upper part of the ICZ case, which contains two brackets: a clamping and a persistent one, designed to wrap and hold between overhead power line wires, the clamps are mounted on axes fixed on the base of the clamp and can be rotated 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 hold the stop bracket from the clamping bracket at a distance that allows the wire to pass 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 clamp base in the “IKZ on the wire” position, while in the “IKZ on the wire "between the clamping bracket and the stop on the base of the clamp there is a gap that allows you to move the stop bracket when turning up the folding stop lever due to the force developed by the clamping bracket, selected as a prototype (see RF patent No. 2 714 449 IPC H01R 4/00 , H02G 7/05, Bulletin No. 5 published 17.02.2020)

The disadvantage of the prototype is that the device is complicated.

The technical result is that the device is simplified.

The specified technical result is achieved by the fact that the clamp for fastening the short circuit indicator (SIC) to the wire of the overhead power line, located in the upper part of the ICZ housing, containing a clamping bracket with a notch for the wire, mounted movably on the axis and equipped with a spring installed on the same axis, 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, while the feature is that the support bracket is made in one piece with the body, and the spring of the clamping bracket made interacting with the short end of the folding thrust lever.

Additionally, the claimed device is characterized by the fact that the top of the brackets is made with slots, and the ribs of one bracket are placed opposite the slots of the other bracket.

The claimed invention is illustrated by drawings, where

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

Fig. 2 - clamp mounted on the wire of the power line.

Fig. 3 - clamp, at the moment of removing the power line from the wire.

Fig. 4 - clamp at the time of preparation to the starting position.

Fig. 5 - an insulating rod with a glass for installation and removal (IKZ) on a reduced scale.

Fig. 6 - view along A-A of the upper end of the bracket.

The drawings show a power line wire 1, a clamping clamp 2 having a recess 3 in which the wire 1 is located. 8, movably fixed on the axis 9. The housing 10 is made in one piece with the support bracket 11, which has a recess 12 for the wire 1. The support bracket 11 has an axis 13, designed for the movable fastening of the spacer rod 14, which interacts with the stop 4 of the clamping bracket 2.

The insulating rod 15 at the upper end contains a cup 16, the edge 17 of which contains a recess 18. Depending on the characteristics of the spring 6, it may be necessary to make the upper part of the brackets with grooves 19 with the formation of ribs 20. Moreover, the grooves of one bracket should be located opposite the ribs of the other bracket and have the ability to enter into each other. Such a design of the brackets will allow the spring to be hooked, with a large expansion stroke, by the short end 7 of the folding thrust lever 8.

Device 1 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 the cup 16 of the insulating rod 15 in such a way that the protruding part of the folding thrust lever 8 is located in the recess 18. By lifting the insulating rod 15, the fitter inserts wire 1 between brackets 2 and 11. With further lifting, wire 1 presses on the spacer rod 14. It jumps off the stop 4, the clamping bracket 2 turns clockwise under the action of the spring 6 and securely clamps the wire 1, which is placed in the recesses 3 and 12. Now you can lower the insulating rod 15 (see Figure 2).

Removal of IKZ from a wire of a power line.

The insulating rod 15 is raised. Moreover, the edge 17 should be located under the folding stop lever 8. When the insulating rod 15 is further raised, the edge 17 of the cup 16 presses from below on the stop lever 8, which rotates clockwise and its short end 7 releases the spring 6. The IKZ is freely removed from wire 1 of the power line (see figure 3).

If the spring 6 has a large opening in the free state, then the upper ends of the brackets are made with grooves. Moreover, the grooves of one bracket are placed opposite the ribs of the other bracket and have the ability to enter into each other. This allows the free end of the spring to be moved a greater distance. As a result, the short end 7 of the folding thrust lever 8 will interact with the spring 6 and compress it when the lever 8 is rotated 90 degrees (see figure 4).

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.

Excluded focus (position 11 in the prototype). The axis is excluded (position 4 in the prototype). There is no need to make a separate part of the support bracket, as it is made in one piece with the body.

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

Claims (2)

1. Clamp for attaching a short circuit indicator (SIC) to an overhead power line wire, located in the upper part of the ICZ housing, containing a clamping bracket with a notch for the wire, mounted movably on an axis and equipped with a spring installed on the same axis, a support bracket with a similar notch , 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, characterized in that the support bracket is made integral with the body, and the spring of the clamping bracket is made to interact with the short end of the folding stop lever. 2. The clamp according to claim 1, characterized in that the top of the brackets is made with slots, and the edges of one bracket are placed opposite the slots of the other bracket.

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