RU2013813C1 - Fixture for attachment of wire on pin-type insulator - Google Patents

Abstract

FIELD: electrical engineering. SUBSTANCE: fixture includes two identical parts containing clips embracing groove of insulator from opposite sides and clamps made of symmetric dies with grippers put on them. Dies for wire are anchored on one end of clip uniaxially so that one of them presses wire from above and the other one from below. Dies are so positioned on axle that they touch each other only with face parts and can turn about it. Troughs for wire accommodation close to dies have hemispherical shape in cross-section. For anchoring of fixture on insulator and holding of wire free end of each clip is entered into grippers of dies of the other clip. EFFECT: simplified design, enhanced efficiency. 3 cl, 4 dwg

Description

 The invention relates to the electric power industry and can be used on overhead power lines with pin insulators.

 A device for lateral mounting of a wire on a pin insulator is known, comprising a bracket fixed to the insulator neck and hooked hooks for the wire pivotally connected to the bracket at the ends.

 When the drive is mounted on the insulator neck by such a device during operation, vibration reduction and the necessary reliability are not provided.

 A device for attaching a wire to the neck of an insulator is known, containing the main and additional elastic grips covering the neck of the insulator, each of which is made in the form of a loop, with both ends of each grip fixed in one clip, and the clamps on the wire on opposite sides of the insulator.

 Such a device, due to the fact that it consists of two captures that are not dependent on each other and due to the fact that the wire and the ends of the loopback captures are attached in one clip, does not provide protection against fatigue and the necessary reliability during vibration.

 A device for attaching a wire to the head of a pin insulator is also known, consisting of two parallel rods of an elastic cable, at the ends of which are fixed L-shaped dies in pairs, having vertical slots (gutters) with diverging walls for putting on the wire, as well as hooks covering the wire from below.

 The disadvantage of this device is that it also does not provide sufficient protection for the wire from vibration, due to the fact that the wire is pressed through the die with rods only from above. At the same time, the device does not allow the wire to slip in the slots of the dies when it breaks, since the walls of the slots (troughs) are made obliquely, which leads to jamming of the wire and, as a result, the reliability of the supports of power lines decreases.

 To protect the wires of the power line from vibration, to reduce the tension of the dangling wire and to increase reliability, the device for attaching the wires to the head of the pin insulator contains staples polarized on the neck of the insulator with clamps on the wires.

 To accomplish this task, the device differs from the known one in that the clamp for the drive consists of two asymmetric dies with grooves for the wire and locks fixed coaxially at the ends of each of the brackets, with one of the dies of the clamp holding the wire on top and the other on the bottom, while the dies vertically shifted relative to each other, touching adjacent adjacent end parts.

 This arrangement of the dies in the clamp and on the brackets in combination with the elastic properties of the brackets can reduce vibration and vibration stresses in the wire.

 In order for the wire to slip in the clamping dies and reduce the support force during wire breakage, the grooves for the wire in the dies are made in cross section in the form of a semicircle.

 This arrangement of the clamping dies on the brackets, as well as for the convenience of mounting the device on the insulator, necessitated the dies to be made with grippers, which are locks in which the corresponding free ends of the brackets are located.

 In FIG. 1 shows a device, a General view; in FIG. 2 - the same plan; in FIG. 3 is a section AA in FIG. 1; in FIG. 4 is a section BB in FIG. 1.

 A device for attaching a wire to a pin insulator consists of two identical parts, including the following (Fig. 1, 2).

 On the bracket 1, worn on the neck of the insulator 2, two dies are mounted on the axis of one end 3. Each dies (Fig. 3, 4) has an eyelet 5 for putting on the end of the bracket, a groove 6 for wire 7 and a gripper 8 for attaching a second free end 9 of another bracket. The dies 4 at the ends of each bracket are rotatably fixed about the axis of the end 3 and are mixed one relative to the other along the axis, touching only the ends.

 For ease of installation, the free end 9 of the bracket 1 has a leash 10.

 Parts of the device are made of various materials and various processing methods. The bracket 1 is made of spring steel wires with a diameter of 5-6 by the method of bending; dies 3 - from galvanized steel by stamping or from aluminum by stamping or casting.

 The device operates as follows. The wire 7 is inserted into the recess on the head of the insulator 2. A bracket 1 is put on the neck of the insulator 2, at the same time one of the dies 4 is also put on the wire 7. The same is done with a similar second device on the opposite side of the insulator. Then rotate the second die 4, supporting the wire 7 from the bottom to the level when the grips of adjacent dies 4 coincide, the free end 9 of the other bracket is wound in them. After that, a similar action is performed on the opposite device. Dismantling the device is carried out in the reverse order.

Claims (3)

 1. A DEVICE FOR FIXING A WIRE ON A PIN INSULATOR containing brackets with wire clips on them, located on the insulator neck in opposite directions from it, characterized in that the wire clip consists of two asymmetric dies with wire channels and locks secured coaxially at the ends of each of the brackets, with one of the dies of the clamp, the wire is pressed from above, and the other from the bottom, while the dies are shifted vertically relative to one another, touching adjacent adjacent end parts.  2. The device according to claim 1, characterized in that the grooves for the wire in the dies are made in cross section in the form of a semicircle.  3. The device according to claim 1, characterized in that the dies are made with grippers, which are locks, in which the corresponding free ends of the brackets are located.

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