Connecting hardware fitting for stepless adjustable sub-conductor phase-to-phase spacer

Abstract

The invention relates to a connecting hardware fitting for a stepless adjustable sub-conductor phase-to-phase spacer, conductor clamping heads are distributed on an outer ring of the spacer, a cross beam is arranged on an inner ring of the spacer, the middle position of the cross beam corresponds to one of the conductor clamping heads, positioning holes are respectively symmetrically arranged on the planes of the cross beam and the spacer by taking the axial line of the conductor clamping heads as the center, an insulator is arranged on a connecting plate, regulating plates I are respectively hinged at two ends of the connecting plate, a rack is arranged on one surface which is opposite to a regulating plate II of each regulating plate I, the regulating plates I and the regulating plates II are meshed through the racks, a tensioning device is arranged on the spacer, the lower end of the tensioning device penetrates the positioning holes on the cross beam and the spacer and is then close to the regulating plates I, the tensioning device, the spacer, the regulating plates I and the regulating plates II are fixedly connected through bolts, long regulating holes are formed on the regulating plates I, and the bolts penetrate the regulating holes. The connecting hardware fitting can realize sub-conductor spacing interval stepless regulation and has the advantages of high safety, convenient installation, a wide range of applications and the like.

Description

technical field [0001] The invention relates to the field of overhead power transmission lines, in particular to a connecting fitting for a steplessly adjustable sub-conductor phase-to-phase spacer bar. Background technique [0002] Ice-coated galloping of overhead transmission line conductors has always been a thorny problem that seriously threatens the safe and stable operation of transmission lines. When the ice-covered conductor dances, the conductors of each phase will vibrate irregularly with different waveforms and different phases, and it is very easy to cause phase-to-phase or phase-to-ground air breakdown flashover (especially for compact transmission lines). Vicious accidents of damage to line fittings, ground wires, pole towers, etc., galloping have brought great harm to the safe operation of transmission lines. [0003] The existing interphase spacer matching connecting fittings can only realize the adjustment of several lengths, and cannot realize stepless adj...

AI Technical Summary

Problems solved by technology

[0003]The existing interphase spacer matching connecting fittings can only realize the adjustment of several lengths, and cannot realize stepless adjustment, and most of the connecting fittings use balls when connecting insulators. The connection method of the head ball socket is prone to the phenomenon that the ball head falls off during the line operation, and there are safety hazards in construction

For example, the Chinese invention patent with the notification number CN201243187Y discloses an adjustable conductor interphase spacer. An adjustment plate and a connecting plate are arranged between the spacer and the insulator end fittings. By adjusting the fixed position of the adjustment hole on the adjustment plate, It can adapt to and make up for the error of wire sag installation, but because this kind of connecting fitting adopts the structure of the adjustment hole, there will still be a blind area in the adjustment, so when it is necessary to fine-tune the interphase spacing of the wires, the spacer is still not competent In addition, in this structure, the connecting plate and the insulator are connected by a ball joint. Since the ball joint has only one degree of freedom, the safety is poor, and the ball head is prone to fall off when the line is running. Therefore, it is urgently needed for those skilled in the art to develop A new type of connecting fitting for adjustable phase-to-phase spacers with high safety can adapt to and compensate for the error of wire sag installation, steplessly adjust the inter-phase spacing of sub-conductors

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