A dual-mode distance-adjusting lightning protection line column-type composite insulator

Abstract

The invention discloses a dual-mode distance-adjusting lightning protection line column-type composite insulator which comprises an insulating shield and a wire-clamping armour clamp arranged in the insulating shield and formed by an upper pressing block and a lower pressing block. A side end of the lower pressing block is connected to a connecting portion of an arc-striking rod, and the lower pressing block is connected to an insulator. The lower end of the insulator is provided with a lower steel pin. The lower end of the arc-striking rod is close to the lower steel pin. The arc-striking rod is in coupling with the lower pressing block. A side end of the lower pressing block is provided with a semispherical convex portion. A connection portion of the arc-striking rod is provided with a correspondingly formed semispherical concave portion. A rotating shaft passes through the convex portion to be embedded in shaft holes in the two sides of the concave portion. A shaft portion outside of the upper portion of the lower pressing block is provided with a space-limiting nut which is abutted against the arc-striking rod. The dual-mode distance-adjusting lightning protection line column-type composite insulator of the invention has advantages that the axial and radial distances between the arc-striking rod and a grounding end contact can be adjusted, therefore, the insulator can be adapted to different discharge distance requirements; and in addition, a puncture clip and an electric wire metal form partial surface contact, thereby increasing a contact area and ensuring the reliability of electrical connection.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a post-type composite insulator for lightning protection lines. Background technique [0002] A current lightning protection pillar composite insulator combines the pillar insulator and arc-proof fittings into one, such as Chinese Patent Publication No. CN101325104B. Its structure includes an insulating shield and an upper pressing block and a lower pressing block in the insulating shield. The wire clamping fitting is formed, the side end of the wire clamping fitting is connected to an arc strike rod, and the lower end of the wire clamping fitting is connected to an insulator, and an anti-pollution umbrella group is provided on the outer surface of the insulator. A lower steel foot is arranged at the lower end of the insulator, and the lower end of the arc striking rod is arranged close to the lower steel foot. However, the lightning protection post insulator of this ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a lightning protection line column composite insulator with adjustable discharge distance, which can preset the discharge distance in advance according to the situation of different local thunderstorm seasons, so as to avoid the spark caused by too small distance. Arc rod fusing or excessive discharge distance causes damage to the line, etc., and the structure of the piercing wire clip is improved, and the surface contact between the long wire clip and the wire is changed by point or line contact

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