Spacer for wire

Abstract

The invention provides a wire separator which maintains mounting posture of a wire holding part as a normal mounting state without undesirable mountings, is capable of mounting the wire holding part onto wires without using special tools and is suitable for UHV power transmission wires, characterized in that the wire separator is composed into a frame (23) of a regular polygon and mounted with an anti-rotary stopper (22) used for maintaining a normal assembling posture of the non-bolt wire holding part (30) when connecting the non-bolt wire holding part (30) onto a wire connecting terminal (14) and assembling it onto a cavity (15); a blocking piece (25) mounted on head part of a shaft blot 4 of the non-bolt wire holding part (30) is rotatably assembled relative to shaft of the shaft blot along horizontal direction; it may be intersected with a slotted hole (24) into a right angle and reliably blocking without special tools when mounting the non-bolt wire holding part (30) towards wire (C).

Description

technical field [0001] The present invention relates to spacers for electric wires such as boltless spacers for multi-conductor electric wires. The structure of multi-conductor boltless spacers used in AC ultra-high voltage (UHV) power lines. Background technique [0002] As such a conventional boltless wire gripping portion, there is, for example, Patent Document 1. Figure 1 to Figure 10 and the patent document 2 Figure 1 to Figure 3 the described structure. [0003] [Patent Document 1] Japanese Patent Publication No. 07-0556572 [0004] [Patent Document 2] Japanese Patent Application Laid-Open No. 08-228422 [0005] The wire holding portion of Patent Document 1 is shown in the accompanying Figure 9 to Figure 11 in these Figure 9 to Figure 11 Among them, the reference numeral 1' is the main body of the boltless electric wire holding part, the weight 2' is rotatably attached by the pin 3', and the electric wire 4' is clamped and held by the two. In addition, the bo...

AI Technical Summary

Problems solved by technology

On the other hand, in the case where the T part and the fork part are intersected and engaged, in addition to use, in order to intersect and engage the T bolt, a compressive force is applied to the T-bolt shaft by the tightening screw, so it cannot be done manually. Intersecting, snapping, and special two-fork tools other than the ratchet wrench that need to remove the jacking screw, there are problems that need to be solved when two kinds of installation tools are required at a high place where the foothold is unstable, which is very inconvenient for construction

[0026] The conventional device of Patent Document 2 solves the problem of Patent Document 1, and no special tool is required for locking the head of the T-bolt to the clamp cover 1B. However, in order to make the head of the T-bolt freely rotatable On the other hand, the structure of the spring receiving part provided on the other end side of the T-bolt head is a complicated mechanism. In the spacer for UHV power transmission line that requires a plurality of bolt-free wire holding parts, the weight of the spacer as a whole increases and becomes a cost. The question of the cause of the elevation

[0027] In addition, in any of the above-mentioned patent documents, only the structure of the bolt-less electric wire holding part is shown, and in the case where the number of conductors is 8 to 10 like a UHV transmission line, if the holding parts are uniformly arranged in a predetermined direction When installed on a wire, the sharp part where corona discharge is likely to occur, such as the protrusion of the grip part, will be located at a position with a high potential gradient

As a result, there may be radio wave interference to radios, TVs, etc., or corona discharge noise in rainy days, etc.

[0028] In order to prevent such interference, it is necessary to attach the holding part to the electric wire in a state where the holding part does not move and maintains a predetermined position and posture, but there is no such function described in the spacer of the above-mentioned document, that is, no provision can be made. Common problems of spacers for UHV transmission lines to solve such problems

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