RU2811089C1 - Device for fixing short circuit indicator on wire of overhead power line - 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). A device for attaching a short circuit indicator (SCI) to an overhead power line wire, located in the upper part of the square SCI case, containing a clamping bracket with a recess for the wire, movably mounted on an axis and equipped with a spring installed on the same axis interacting with the short end of a folding hold lever, installed on the base, a holding bracket made integral with the base, equipped with a similar recess, having an axis with a spacer rod movably attached to it. Moreover, the clamping bracket is equipped with an axis with an additional spacer rod movably attached to it. In addition, the spacer rods abut each other.

EFFECT: fulfilment of the purpose.

3 cl, 4 dwg

Description

A device for attaching a short circuit indicator to an overhead power line wire.

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.

Devices for ICP of various types are known from the state of the art, which can be installed on an overhead power line without disconnecting the current supply, using insulating rods.

A similar device is known, consisting of two rotary brackets, which, when installed in the insulating rod shell, are moved apart and held in an unclamped state until they are installed on the overhead power line by the brackets of the insulating rod shell. When bringing the device to the wire, the installer, using a bottom-up motion, presses the device bed against the wire with force, while the holding clamps of the gripper, in the extended state, disengage with the gripping brackets of the rod and the brackets of the device 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 device is known, consisting of one clamping bracket that presses the wire to the base of the device, 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.

A similar device is known for attaching a short circuit indicator (SCI) to an overhead power line wire, installed in the upper part of the IKZ housing, 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 are installed on the 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 thrust bracket, the thrust bracket is equipped with a spacer rod-guard capable of holding the thrust bracket from the clamping bracket at a distance that allows passage of the wire into the clamping space of the brackets, and the thrust bracket is equipped with a folding thrust 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 there is a gap between the clamping bracket and the stop on the base of the clamp , allowing the thrust bracket to be moved from its 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)

The disadvantage of the analogue is that the brackets have a greater height above the base, therefore, the device is overweight

The closest combination of features is a device for attaching a short circuit indicator (SCI) to an overhead power line wire, located in the upper part of the SCI housing, containing a clamping bracket with a recess for the wire, mounted movably on an axis and equipped with a spring mounted on the same axis, supporting a bracket with a similar recess, having an axis with a spacer rod movably attached to it, interacting with the stop of the clamping bracket; a folding thrust lever is placed on the base, wherein the thrust bracket is made integral with the base, and the spring of the clamping bracket is made to interact with the short end of the folding thrust lever (see RF patent 2778935 IPC H01R 4/00, H02G 7/05 published on August 29, 2022 Bulletin No. 25, selected 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) and the implementation of the specified purpose by the invention.

The specified technical result is achieved by the fact that a device for attaching a short circuit indicator (SCI) to an overhead power line wire, located in the upper part of the SCI housing, containing a clamping bracket with a recess for the wire, mounted movably on an axis and equipped with an interacting spring installed on the same axis with the short end of a folding thrust lever installed on the base, a thrust bracket made integral with the base, equipped with a similar recess, having an axis with a spacer rod movably attached to it, the peculiarity is that the clamping bracket is equipped with an axis with an additional one movably attached to it a spacer rod interacting with a spacer rod installed on the thrust bracket.

Additionally, a device for attaching a short circuit indicator (SCI) to an overhead power line wire is characterized by the fact that the spacer rods are equipped with shanks.

Additionally, a device for attaching a short circuit indicator (SCI) to an overhead power line wire is characterized in that the SCI body is made, for example, square.

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

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

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

Fig. 3 - device 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.

Power line wire 1, clamping bracket 2, having a recess 3 in which the power line wire 1 is located. Clamping bracket 2 is equipped with an additional spacer rod 4 mounted movably on an axis 5 fixed to the clamping bracket 2. Moreover, the additional spacer rod 4 is equipped with a shank 6 for ease of manipulation of the spacer rod 4. The clamping bracket 2 is movably fixed on the axis 7, on which a spring 8 is located, interacting with the short end 9 of the folding thrust lever 10, movably mounted on the axis 11. The base 12 is made integral with the thrust bracket 13, which has a recess 14 for wire 1. On the thrust bracket 13 there is an axis 15, intended for movable fastening of the spacer rod 16, equipped with a shank 17. The end of the additional spacer rod 4, under the action of the spring 8, rests against the end of the spacer rod 16. The insulating rod 18 at the upper end contains a square cup 19, one of the sides 20, which is made longer than the other sides. The IKZ body should be made in a square section, in the shape of a glass 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 19 of the insulating rod 18 so that the protruding part of the folding thrust lever 10 is located opposite the side 20. By lifting the insulating rod 18, the installer inserts the power line wire 1 between the clamping bracket 2 and the thrust bracket 13. With further rise, the power wire 1 presses on the additional spacer rod 4 and the spacer rod 16. They no longer rest against each other and no longer hold the clamping bracket 2 in the open state. The latter rotates under the action of spring 8 clockwise and securely clamps the power line wire 1, which is placed in recesses 3 and 14. Now you can lower the insulating rod 18 (see Figure 2).

Removing the ICP from the power line wire.

Raise the insulating rod 18. Moreover, the long side 20 should be located under the folding thrust lever 10. With further lifting of the insulating rod 18, the edge of the long side 20 of the glass 19 presses from below on the thrust lever 10, which rotates clockwise and its short end 9 releases the spring 8. If the clamping bracket 2 and the thrust bracket 13 seem to be stuck to the wire of the power line 1 and the IKZ is not removed, then the rod 18 should be rotated at a small angle to the left and to the right. With the applied force, the clamping bracket 2 and the thrust bracket 13 will separate and the IKZ is freely removed from the power line wire 1 (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 envisioned 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 (3)

1. A device for attaching a short circuit indicator (SCI) to an overhead power line wire, located in the upper part of the SCI housing, containing a clamping bracket with a recess for the wire, mounted movably on an axis and equipped with a spring installed on the same axis interacting with the short end of the folding thrust lever installed on the base, a thrust bracket made integral with the base, equipped with a similar recess, having an axis with a spacer rod movably attached to it, characterized in that the clamping bracket is equipped with an axis with an additional spacer rod movably attached to it, interacting with the spacer rod mounted on the thrust bracket. 2. A device for attaching a short circuit indicator (SCI) to an overhead power line wire, according to claim 1, characterized in that the spacer rods are equipped with shanks. 3. A device for attaching a short circuit indicator (SCI) to an overhead power line wire, according to claim 1, characterized in that the SCI body is made, for example, square.

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