SU1752198A3 - Insulating stick - Google Patents

Abstract

Usage: mechanization of work carried out from the ground on overhead transmission lines with a voltage of up to 1000 V. SUMMARY OF THE INVENTION: the rod contains an electrically insulating element with a handle and a barrel attached to it. At the end of the barrel there is a connector through which a bracket with a grip and a screw pin is attached to the barrel. At the end of the screw pin is installed a contact tip on which the knife is fixed. The cutting edge of the knife faces the staple grip. The cutting edge of the knife can be made with steps. 1 hp f-ly, 4 ill.

Description

The invention relates to electrically insulating protective devices serving for the mechanization of work carried out from the ground on overhead power lines (OHL), mainly at voltages up to 1000 V.

A portable grounding rod is known, comprising an insulating holder with a socket grip, a contact clip and a catcher with a free-mounted bracket.

The disadvantage of this bar is the lack of a device for determining the presence of voltage on overhead wires, the inadequacy of the terminal for cutting the wires.

Closest to the invention is a rod designed to carry out the work of the earth on a TL. It provides voltage indication on overhead line wires, and provides grounding for one of the wires. The boom contains a voltage indicator, a contact tip for gripping the wire and its grounding, etc.

The disadvantages of the prototype are the inability of the contact tip for cutting the wires, the absence of a special connector that allows for multi-purpose use of the insulating part of the rod.

The purpose of the invention is to increase the speed and reliability of the rod when cutting wires overhead power lines.

The goal is achieved by an electrically insulating rod serving for work from the ground on an overhead transmission line containing at least one electrically insulating element with a handle and a barrel attached to the electrically insulating link, at the end of which there is a connector designed to fasten a removable device in the form of a bracket with clamp and screw pin, on the end of which pin is installed

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the tip is supplied with a knife mounted on the contact tip, with the cutting edge of the knife facing the grip bracket. In addition, the cutting edge of the knife is made with ledges.

FIG. 1 shows the proposed electrically insulating rod. It consists of an electrically insulating link 1, a handle 2 and a barrel 3 attached to an electrically insulating link. A connector A is mounted on the outer end of the barrel. It is designed to secure the detachable device 5, such as, for example, the electrode, which serves to indicate the voltage on the power line. It ends with a bare part 6, made in the form of a hook, mounted on wire 7. Hook b is electrically connected to indicator 8, equipped, for example, with a gas discharge lamp, light pulses of which indicate the presence of voltage on wire 7. Handle 2 from the electrically insulating link 1 is fenced off by a barrier 9, limiting the movement of the operator’s hands.

A section A-A of device 5 is shown in FIG. 2. It can be seen that the device 5 has an electrically insulated body, made, for example, of a dielectric tube, through which the electrode 10 is passed, connecting hook 6 to the voltage indicator 8. On the barrel 3 there can be mounted a bearing 11. to which the hinge 12, a second electrically insulating link 13 articulated to the handle 14 through an electrically insulating barrier 15 is attached. They serve to ensure the use of the second operator during operation.

In order to cut the VL wires, the device shown in FIG. 3. It consists of a C-shaped hook 16 and a trunnion 17 interconnected by means of a screw 18. In the trunnion case, the knife holder 19 is fixed 20. The knife is a pin contact tip that interacts with the wire 7. The hook 16 is a kind of bracket with capture, which gets cut wire. The axle is insured against turning inside the bracket with the knife body and screw 21 moving progressively along a longitudinal groove 22 made in the collector (rack) of the C-shaped hook 16. The lower base 23 of the hook stand 16 is provided with a threaded hole through which the screw 18 moves. Bottom to the base 23 is attached a guide case 24. It houses the connector 4 and the upper part of the barrel 3.

FIG. 4 shows a section B-B of a shear device. Position 25 shows the parts of the rack hook 16, located on the sides of the longitudinal groove 22.

In order to cut the wire 7 of the overhead line, a voltage is first checked on the wire 7. For this, as a rule, one operator rod with a device 5

the hook 6 is put on the wire of the line. In the absence of voltage, the wires are short-circuited using a special grounding conductor (short circuit). Tool 5 is then replaced with a cutter.

FIG. 3. To do this, use connector 4. One or two operators lift the bar upwards and grip the hook 16 on the wire to be cut 7 (Fig. 3). The rotation of the rod, for example, clockwise in the bearing 11, screws the screw 18 into the base 23 of the hook stand 16. The screw head moves the base 17 of the trunnion upwards until it touches the knife 20 and further complete cutting of the wire 7.

occupies position 26 (FIG. 3) Thereafter, with the help of a rod, the screw is unscrewed from the base 23 by reverse rotation, allowing the knife to take up the initial position again, as shown in FIG. 3. Before this operation, the hook 16 must be in the gripping position of the next wire to be cut. After cutting all the wires, the cutter is removed from slot 4 and in its place is set

device that serves to remove short.

Claims (2)

1. Electrically insulating rod for operation on an overhead power line, containing at least one electrically insulating element with a handle and a barrel attached to the isolating link, the end of which has a connector through which a removable device is attached to the barrel in the form of a clamp with a gripper and a screw pin, on the end of which is a contact tip, In order to improve the speed and reliability when cutting the wires of the overhead line, the rod is equipped with a knife mounted on the contact tip, the cutting edge of the knife facing the grip staples 2. A rod according to Claim 1, characterized in that the cutting edge of the knife is made with ledges. 7 TO L J / I 2 Editor M. Tovtin 2 Compiled by A, Zotov Tehred M. Morgenthal 7 3G FiM Proofreader S. Cherni