CN205335016U - Lightning protection circuit column type composite insulator with different umbrella footpaths - Google Patents

Abstract

The utility model discloses a lightning protection circuit column type composite insulator with different umbrella footpaths, the starting rod is the coupling with pushing down the interblock, and lower briquetting side sets up the hemisphere convex part, and the connecting portion of starting rod set up the hemisphere concave part of corresponding formation, and the pivot is passed the convex part embedding in the shaft hole of concave part both sides, the axial region outside on briquetting upper portion sets up stop nut down, stop nut and starting rod butt, the tip outside of starting rod sets up the screw thread, in the screw thread screw in interface swivel nut, fixation nut sets up on the screw thread and with interface swivel nut in close contact with, the umbrella footpath of insulator is different. The utility model has the advantages that: axial and radial distance between adjustable starting rod and earthing terminal contact, consequently, the arcing distance requirement of adaptable difference, in addition, puncture fastener and the contact of electric wire metal forming part face have increased area of contact, have guaranteed the reliability of electric connection.

Description

A kind of lightning protection line pole type composite insulator with different umbrella footpath

Technical field

This utility model relates to electrical equipment technical field, specifically a kind of lightning protection line pole type composite insulator。

Background technology

Current a kind of lightning protection strut composite insulator, support insulator and arc-preventing metal utensil are united two into one, such as China Patent Publication No. CN101325104B, its structure includes insulating shield and the clamp gold utensil being made up of upper holder block and lower lock block arranging in insulating shield, this clamp gold utensil side connects starting rod, and this clamp gold utensil lower end connecting insulator, it is arranged with antifouling cluster parachute outside insulator。Insulator lower end arranges lower steel foot, and the lower end of starting rod is arranged near lower steel foot。But there is following defect in the lightning protection pillar insulator of this structure: 1. the upper holder block of clamp gold utensil and lower lock block clamp nut and standby jack panel clamping and puncture wire, in order to prevent the clamping of upper holder block and lower lock block from puncturing damage wires in wire process, need the cross section according to wire and sky temperature temperature etc. because usually setting the torque of wrenches of a scope, and in actual mechanical process, often as the operating error of workman, torque of wrenches is excessive or too small, and cause that wire impaired or wire in clamping process is not reaching to the contact effect of the best, have a strong impact on the performance of lightning protection pillar insulator；2. antifouling umbrella group structure arranges unreasonable, its back side is level design, in use, the dirts such as dust are often piled up at the back side of antifouling cluster parachute, but when rainwater weather, rainwater cannot be drained into the back side of antifouling cluster parachute by the antifouling cluster parachute structure of this level design, and washing away dirt, antifouling capacity is poor。3., when meeting creep distance, umbrella footpath is excessive easily causes full skirt and the wet sudden strain of a muscle level deficiency of the resistance to power frequency of starting rod。In order to solve above-mentioned technical problem, Chinese Patent Application No. 201220202149.4 discloses another lightning protection line pole type composite insulator, " the clamp gold utensil being made up of upper holder block and lower lock block in including insulating shield and being arranged at described insulating shield, described clamp gold utensil side connects starting rod, and described clamp gold utensil lower end connecting insulator, described insulator lower end arranges lower steel foot, and the lower end of described starting rod is arranged near described lower steel foot, it is characterized in that: described upper holder block and described lower lock block are connected by bolt and effective torque nut, constitute described effective torque nut rotation and drive that described upper holder block is relative with described lower lock block clamps or unclamp。" although this patent solves part foregoing; but it is not solved by following point: owing to the distance of starting rod and earth terminal is fixed; the end of starting rod, when electric current is relatively big and the persistent period is longer, can be punctured or damage, cause circuit power-off or damage by such structure；Additionally, no matter be point or linear contact lay between penetration type wire clamp and wire, it is easy to cause loose contact。

Utility model content

For solving above-mentioned technical problem, the purpose of this utility model is to provide the lightning protection line pole type composite insulator of a kind of adjustable arcing distance, can according to the situation of local different thunderstorm season, preset arcing distance in advance, avoid apart from problems such as the fusing of the too small starting rod caused or the excessive damages making paired transmission line of arcing distance, also improve the structure of penetrating cable clamp, point or linear contact lay the face changed between wire clamp with wire contacts。Concrete technical scheme is as follows:

A kind of lightning protection line pole type composite insulator of adjustable arcing distance, including insulating shield and the clamp gold utensil that is arranged in described insulating shield to be made up of upper holder block and lower lock block, described lower lock block side connects the connecting portion of starting rod, and described lower lock block connecting insulator, described insulator lower end arranges lower steel foot, and the lower end of described starting rod is near described lower steel foot, it is characterized in that: connect for axle between described starting rod and lower lock block, lower lock block side arranges hemispherical protrusions, the connecting portion of starting rod arranges the hemispherical concave depressions being correspondingly formed, rotating shaft embeds in the axis hole of described recess both sides through described protuberance；Connecting portion rotates around the shaft；The axle portion arranged outside stop nut on lower lock block top, described stop nut abuts with starting rod；

The end arranged outside screw thread of described starting rod, described in be threaded in interface swivel nut, fixing nut be arranged on described screw thread and with interface swivel nut be in close contact；The umbrella footpath of described insulator is different；Described insulator is pressed umbrella footpath size interval and is arranged。

Described upper holder block and lower lock block are respectively provided with clamp groove, and the two ends of described clamp groove arrange through hole, and bolt passes described through hole and nut and then upper holder block and lower lock block fixed；Arranging puncture portion arranged in parallel in the clamp groove of described upper holder block, the length in the puncture portion of described upper holder block is different；Being also provided with puncture portion in the groove of described lower lock block, the length in the puncture portion of described lower lock block also differs。

The utility model has the advantages that: owing to connecing for axle between starting rod and lower lock block, therefore, the radial distance between adjustable starting rod and earth terminal contact；Additionally, due to the thread fixing structure of connecting portion, also the axial distance between adjustable starting rod and earth terminal contact, therefore, is suitable for different arcing distance requirements；In addition, the length in the puncture portion of upper holder block is different, can ensure after puncturing electric wire insulation layer, a part of puncture portion and wire metal tilt along the surface of wire metal under the effect of bolt force, therefore, penetrating cable clamp forms partial face contact with wire metal, adds contact area, it is ensured that the reliability of electrical connection。The umbrella footpath of described insulator is different, it is possible to resolve when meeting creep distance, and umbrella footpath is excessive easily causes full skirt and the wet sudden strain of a muscle level deficiency problem of the resistance to power frequency of starting rod。

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the connection diagram of wire clamp and starting rod；

Fig. 3 is the structural representation in puncture portion。

Detailed description of the invention

This utility model is illustrated below in conjunction with accompanying drawing, as shown in Figure 1-Figure 3, the clamp gold utensil that this utility model is made up of upper holder block 7 and lower lock block 1 in including insulating shield (not shown in FIG.) and being arranged at described insulating shield, described lower lock block 1 side connects the connecting portion 9 of starting rod 2, and described lower lock block 1 connecting insulator 3, described insulator 3 lower end arranges lower steel foot 5, and described steel foot 5 is connected with earth terminal 4 by binding post；And the lower end 8 of described starting rod 2 is near described lower steel foot 5, connect for axle between described starting rod 2 and lower lock block 1, lower lock block 1 side arranges hemispherical protrusions 11, and the connecting portion 9 of starting rod arranges the hemispherical concave depressions being correspondingly formed, and rotating shaft 91 embeds through described protuberance 11 in the axis hole of described recess both sides；The axle portion arranged outside stop nut 12 on lower lock block 1 top, described stop nut 12 abuts with starting rod 2；So, available stop nut 12 limits the rotational angle of starting rod。

Described connecting portion 9 refers to: the end 95 arranged outside screw thread of described starting rod 2, described in be threaded in interface swivel nut 94, fixing nut 93 is arranged on described screw thread and is in close contact with interface swivel nut 94；The umbrella footpath of described insulator is different, it is possible to resolve when meeting creep distance, and umbrella footpath is excessive easily causes full skirt and the wet sudden strain of a muscle level deficiency problem of the resistance to power frequency of starting rod。

Described upper holder block and lower lock block are respectively provided with clamp groove, and the two ends of described clamp groove arrange through hole 10, and bolt passes described through hole and nut and then upper holder block and lower lock block fixed；Arranging puncture portion 15 arranged in parallel in the clamp groove of described upper holder block, the length in the puncture portion of described upper holder block is different；Being also provided with puncture portion 15 in the groove of described lower lock block, the length in the puncture portion 15 of described lower lock block also differs。

Claims (2)

1. a lightning protection line pole type composite insulator with different umbrella footpath, including insulating shield and the clamp gold utensil that is arranged in described insulating shield to be made up of upper holder block and lower lock block, described lower lock block side connects the connecting portion of starting rod, and described lower lock block connecting insulator, described insulator lower end arranges lower steel foot, and the lower end of described starting rod is near described lower steel foot, it is characterized in that: connect for axle between described starting rod and lower lock block, lower lock block side arranges hemispherical protrusions, the connecting portion of starting rod arranges the hemispherical concave depressions being correspondingly formed, rotating shaft embeds in the axis hole of described recess both sides through described protuberance；Connecting portion rotates around the shaft；

The axle portion arranged outside stop nut on lower lock block top, described stop nut abuts with starting rod；

The end arranged outside screw thread of described starting rod, described in be threaded in interface swivel nut, fixing nut be arranged on described screw thread and with interface swivel nut be in close contact；

The umbrella footpath of described insulator is different, and described insulator is pressed umbrella footpath size interval and arranged。

2. lightning protection line pole type composite insulator according to claim 1, it is characterized in that: described upper holder block and lower lock block are respectively provided with clamp groove, the two ends of described clamp groove arrange through hole, and bolt passes described through hole and nut and then upper holder block and lower lock block fixed；Arranging puncture portion arranged in parallel in the clamp groove of described upper holder block, the length in the puncture portion of described upper holder block is different；Being also provided with puncture portion in the groove of described lower lock block, the length in the puncture portion of described lower lock block also differs。