RU2811087C1 - Clamp for fastening short circuit indicator to overhead power line wire - Google Patents

Abstract

FIELD: electric power industry.

SUBSTANCE: invention is intended to install a short circuit indicator (SCI) on the wire of an overhead power line (OPL). The clamp for attaching a short circuit indicator (SCI) to an overhead power line wire, installed in the upper part of the SCI housing, contains two brackets: a clamping one and a stopping one, designed to encircle and hold the overhead power line wire between them. The brackets are mounted on axes fixed to the base of the clamp, and have the ability to rotate on these axes, while the clamping bracket is equipped with a spring installed on its axis, designed to move this bracket towards the stopping bracket, the stopping bracket is equipped with a spacer rod capable of holding the stopping bracket at a distance from the clamping bracket which allows the wire to pass into the clamping space of the clamps, and the stopping bracket is equipped with a folding thrust lever that holds it stationary relative to the base of the clamp in the “SCI online” position. In the “SCI online” position, there is a gap between the bottom of the clamping bracket and the horizontal surface of the base, which allows the support bracket to be moved from its place when the folding support lever is turned upwards due to the force developed by the clamping bracket.

EFFECT: fulfilment of the purpose.

1 cl, 4 dwg

Description

The invention relates to the field of electrical power engineering and can be used to install a short circuit indicator (SCI) on an overhead power line (OHPL) wire.

Clamps for IKZ of various types are known from the state of the art, which can be installed on an overhead power line wire without turning off the current supply, using insulating rods. A similar clamp is known, consisting of two rotary brackets, which, when installed in the insulating rod cup, are separated and held in an unclamped state until they are installed on the overhead power line by the brackets of the insulating rod cup. When applying the clamp to the wire, the installer, using a bottom-up motion, presses the clamp bed against the wire with force, while the holding brackets of the clamp in the extended state disengage with the clamping brackets of the rod and the clamp brackets tightly cover the wire. (see - OKB ASTRON. Tool for short circuit detection of overhead power lines ASTRON-7080. Operating manual. ALKYA. 425148.001 RE. Moscow 2009).

The disadvantage of the analogue is that when removing the ICZ from the wire, the grip of the rod catches the ICZ inserted into it and the installer, by moving the rod downwards, tears the ICZ from the wire. In this case, the applied force 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 "Antrax" without disconnecting the line voltage https://youtu.be/xe0Ej15pJVY)

The disadvantage of the analogue is that when removing the ICP from the wire, great efforts have to be made, 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 set of features is a clamp for attaching a short circuit indicator (SCI) to an overhead power line wire, installed in the upper part of the IKZ body, which contains two brackets: a clamping one and a thrust one, designed to encircle and hold the overhead power line wire between them, the brackets mounted on axes fixed to 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 thrust bracket, the thrust bracket is equipped with a spacer rod-guard capable of holding the thrust bracket from the clamping bracket on 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 base of the clamp in the “IKZ on the wire” position, while in the “IKZ on the wire” position between the clamping bracket and the stop on There is a gap at the base of the clamp that allows the thrust bracket to be moved out of place when the folding thrust lever is turned upward due to the force developed by the clamping bracket (see RF patent No. 2714449 IPC H01R 4/00, H02G 7/05, published on February 17, 2020, bulletin No. 5 , chosen as a prototype)

The technical problem solved by the invention, expanding the arsenal of technical means.

The technical result is the solution to a given technical problem by creating a technical solution alternative to a known solution (creating a variant of a known solution).

The specified technical result is achieved by the fact that a clamp for attaching a short circuit indicator (SCI) to an overhead power line wire, located in the upper part of the IKZ housing, contains two brackets equipped with recesses: a clamping one and a thrust one, designed to enclose and hold the overhead line wire between them power transmission, the brackets are mounted on axes fixed to the base of the clamp, having the ability to rotate on these axes, while the clamping bracket is equipped with a spring placed on its axis, designed to move this bracket towards the thrust bracket, which is equipped with an axis with a spacer movably mounted on it a rod interacting with the stop of the clamping bracket, wherein the thrust bracket is made to interact with a folding thrust lever, holding it stationary relative to the base of the clamp in the “IKZ on wire” position, the peculiarity is that the bottom of the clamping bracket is made to interact with the horizontal surface of the base, with the formation of a gap that allows the thrust bracket to move out of place when the folding thrust lever is turned upward due to the force developed by the clamping bracket.

An example of a specific implementation of the claimed invention is illustrated in the drawings.

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

Fig. 2 - clamp installed on the power line wire.

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

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

The drawings show.

Clamping bracket 1, having a recess 2, in which the power line wire 3 is located. Thrust bracket 4, having a recess 5. Recesses 2 and 5 house the power line wire 3. Axes 6 and 7 are fixed to the base 8 of the clamp. A clamping bracket 1 and a thrust bracket 4 are mounted on axes 6 and 7 with the possibility of rotation. Spring 9 is placed on axis 6 and is designed to move the clamping bracket 1 towards the thrust bracket 4. The thrust bracket is equipped with an axis 10, on which a spacer rod 11 is movably attached , interacting with the stop 12 of the clamping bracket 1. The thrust bracket 4 is made to interact with the folding thrust lever 13, which holds it stationary relative to the base 8 in the “IKZ on the wire” position. The bottom 14 of the clamping bracket 1 is made to interact with the horizontal surface 15 of the base 8 with the formation of a gap (see figure 2) allowing the thrust bracket 4 to move out of place when the folding thrust lever 13 is turned upward. The insulating rod 16 has a cup 17 with a protruding edge 18 and a recess 19.

The device works as follows.

Installation of IKZ on a power line wire.

The initial position of the device is shown in Figure 1. The IKZ is installed in the glass 17 of the insulating rod 16 so that the protruding part of the folding thrust lever 13 is located in the recess 19. By lifting the insulating rod 16, the installer inserts wire 3 between the clamping bracket 1 and the thrust bracket 4. Further When lifting, wire 3 presses on the spacer rod 11. It jumps off the stop 12 of the clamping bracket 1 and the clamping bracket 1 is no longer held in the open state. The latter rotates clockwise under the action of spring 9 and securely clamps wire 3, which is placed in recesses 2 and 5. Now you can lower the insulating rod 16 (see Figure 2).

Removing the ICP from the power line wire.

Raise the insulating rod 16. Moreover, the edge 18 should be located under the folding thrust lever 13. With further lifting of the insulating rod 16, the edge 18 of the glass 17 presses from below on the thrust lever 13, which rotates counterclockwise and its short end releases the thrust bracket 4. Pressing spring 9 onto the clamping bracket 1, turns the latter clockwise. The clamping bracket selects a gap between its bottom 14 and the horizontal surface 15 of the base 8. This allows the thrust bracket 4 to be moved from its place. The IKZ is freely removed from the wire 3 of the power line (see figure 3).

Thus, the above information indicates that the following set of conditions are met when using the claimed invention:

- a means embodying the claimed invention during its implementation, intended for use in the electric power industry for installing a short circuit indicator (SCI) on the wire of an overhead power line (OHPL) and for removing it from the wire (OHPL).

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

- the means embodying the claimed invention during its implementation is capable of achieving the technical result envisaged by the applicant.

- the advantage of the invention is that the arsenal of technical means is expanding, namely, a new technical solution is proposed, an alternative to the known solution.

Therefore, the claimed invention meets the condition of “industrial applicability”.

Claims (1)

A clamp for attaching a short circuit indicator (SCI) to an overhead power line wire, located in the upper part of the IKZ housing, containing two brackets equipped with recesses: a clamping one and a thrust one, designed to encircle and hold the overhead power line wire between them, the brackets are installed on the axes, fixed on the base of the clamp, having the ability to rotate on these axes, while the clamping bracket is equipped with a spring placed on its axis, designed to move this bracket towards the thrust bracket, which is equipped with an axis with a spacer rod movably attached to it, interacting with the stop of the clamping bracket , wherein the thrust bracket is made to interact with a folding thrust lever, holding it stationary relative to the base of the clamp in the “IKZ on the wire” position, characterized in that the bottom of the clamping bracket is made to interact with the horizontal surface of the base, forming a gap allowing the thrust bracket to move out of place when turning upward the folding thrust lever due to the force developed by the clamping bracket.

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