RU2811090C1 - 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 SCI housing, containing two brackets equipped with recesses: a clamping one and a holding one, designed to encircle and hold the overhead power line wire between them. The brackets are installed on axes fixed to the base of the clamp, having the ability to rotate on these axes or together with the axle. The clamping bracket is equipped with a spring placed on its axis, designed to move this bracket towards the holding bracket, which is equipped with an axis with a spacer rod movably attached to it. The holding bracket is designed to interact with a folding hold lever, which holds it stationary relative to the base of the clamp in the “SCI online” position. The SCI body has a square cross-section. A stop is made on the side surface of the support bracket, and the end of the short arm of the folding support lever is bent 90 degrees towards the holding bracket, and the height of the stop is less than the height of the bent end of the short arm of the folding support lever. The bottom of the clamping bracket is designed to interact with the horizontal surface of the base, and the clamping bracket itself is equipped with an axis with an additional spacer rod movably mounted on it, interacting with the spacer rod of the holding bracket. The SCI body is not a body of rotation and is made, for example, square.

EFFECT: fulfilment of the purpose.

2 cl, 5 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.

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 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 clamp clamps in the extended state come out of engagement with the clamp clamp brackets of the rod and the clamp brackets tightly cover the wire (see OKB ASTRON. Means for detecting a short short circuits 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 force applied to remove the IKZ from the wire is approximately 30 kgf (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 ICP body (see Installation of the Anthrax ICP 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 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 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 move out of place when the folding thrust lever is turned upward due to the force developed by the clamping bracket (see Fig. RF patent No. 2714449 IPC H01R 4/00, H02G 7/05, publ. 02/17/2020 bulletin No. 5, selected as a prototype).

The technical problem solved by the invention is the expansion of 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 IKZ housing, contains 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 axes fixed to the base of the clamp, having the ability to rotate on these axes or together with the axis, 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 movably mounted it with a spacer rod, and 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 there is a stop on the side surface of the thrust bracket, and the end of the short arm of the folding thrust lever bent 90 degrees towards the thrust bracket, and the height of the stop is less than the height of the bent end of the short arm of the folding thrust lever; in addition, the bottom of the clamping bracket is designed to interact with the horizontal surface of the base, and the clamping bracket is equipped with an axis with an additional spacer rod movably mounted on it, interacting with a spacer rod of the thrust bracket.

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.

Fig. 5 - view – A.

The drawings show:

A clamping bracket 1 having a recess 2 in which the power line wire 3 is located. A thrust bracket 4 having a recess 5. The recesses 2 and 5 house the power line wire 3. The axles 6 and 7 are secured to the base 8 from falling out (for example, by riveting the ends ) and can rotate. A clamping bracket 1 is installed on axis 6, and a thrust bracket 4 is installed on axis 7. Spring 9 is placed on axis 6 and is designed to move 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 having a shank 12. The clamping bracket 1 is equipped with an axis 13 with an additional spacer rod 14 movably mounted on it having a shank 15. The additional spacer rod 14 interacts with the spacer rod 11 mounted on the thrust bracket 4. The thrust bracket 4 is made to interact with the folding thrust lever 16, holding it stationary relative to the base 8 in the “IKZ on the wire” position. On the side surface of the thrust bracket 4 there is a stop 17. The end 18 of the short arm of the folding thrust lever 16 is bent 90 degrees towards the thrust bracket 4. The bottom 19 of the clamping bracket 1 is made to interact with the horizontal surface 20 of the base 8, forming a gap (see Fig. 2). The insulating rod 21 has a square cup 22. One of the faces 23 of the cup 22 is made longer than the other faces, which have the same size. The thrust bracket 4 can be connected to the axis 7 with a pin (not shown). In this case, the axis must rotate at the point of attachment in the holes of the base 8. The thrust bracket 4 can rotate on the axis 7, but in this case it is necessary to install bushings 24 and 25 on the axis.

The device works as follows.

Installation of IKZ on a power line wire.

The initial position of the device is shown in Fig. 1. The IKZ, which has a square body, is installed in the square cup 22 of the insulating rod 21 so that the protruding part of the folding thrust lever 16 is located against the long edge 23. By lifting the insulating rod 21, the installer inserts wire 3 between the clamping bracket 1 and the thrust bracket 4. When further ascent, wire 3 presses on the spacer rod 11 and the additional spacer rod 14. They no longer rest against each other and no longer hold the clamping bracket 1 in the open state. The latter rotates under the action of spring 9 clockwise and securely clamps the power line wire 1, which is placed in recesses 2 and 5. Now you can lower the insulating rod 21 (see Fig. 2).

Removing the ICP from the power line wire.

Raise the insulating rod 21. Moreover, the long edge 23 should be located under the folding stop lever 16. With further lifting of the insulating rod 21, the long edge 23 presses from below on the stop lever 16, which turns counterclockwise and its bent short end 18 jumps off the stop 17 and releases thrust bracket 4. Spring 9 pressing on clamping bracket 1 turns the latter clockwise. The clamping bracket 1 selects a gap between its bottom 19 and the horizontal surface 20 of the base 8. Now you should rotate the rod 21 at a small angle to the left and right. With the applied force, the clamping bracket 1 and the thrust bracket 4 will move apart and the IKZ is freely removed from the power line wire 1 (see Fig. 3).

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

- the means embodying the claimed invention during its implementation is 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 (2)

1. A device 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 to the base of the clamp, having the ability to rotate on these axes or together with the axis, 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 mounted on it, and 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, characterized in that there is a stop on the side surface of the thrust bracket, and the end of the short arm of the folding thrust lever is bent 90 degrees to the side thrust bracket, wherein the height of the stop is less than the height of the bent end of the short arm of the folding thrust lever; in addition, the bottom of the clamping bracket is designed to interact with the horizontal surface of the base, and the clamping bracket is equipped with an axis with an additional spacer rod movably attached to it, interacting with the spacer rod of 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 SCI body is made, for example, square.

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