JPH0353556Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a multi-conductor interphase spacer used in a multi-conductor power transmission line in which each phase is transmitted using a multi-conductor.

(Prior Art) When ice and snow form on the conductors of a power transmission line, phenomena called three-way jumps and gearlopping occur, and in severe cases, this can lead to phase-to-phase short circuits and disconnection accidents. Therefore, in order to prevent conductors from coming close to each other and to reduce load fluctuations caused by these phenomena, interphase spacers using rod-shaped insulating members are installed on power transmission lines in cold regions. A multi-conductor interphase spacer is used, in which conductor spacers are attached above and below a rod-shaped insulating member. As such a multi-conductor interphase spacer, for example, as shown in FIG. 3, there is a spacer in which a conductor spacer 11 is pivotably attached to the upper and lower ends 12 of a rod-shaped insulating member 13. However, although such a device has the advantage that the conductor spacer 11 follows the movement of the conductor 10 due to three-way jump or gear locking and reduces the load on the rod-shaped insulating member 13, it also causes an unnatural movement as shown in FIG. There was a problem with how easy it was to maintain a good posture. In other words, since the weight of such an interphase spacer is suspended from the upper phase side, the conductor 10 on the upper phase side becomes slack, and if an interphase spacer having a predetermined interphase distance is inserted in this state, The conductor spacer 11 on the lower phase side was pushed up by the conductor 10 on the lower phase side, and as a result, the conductor spacer 11 on the lower phase side rotated as shown in Fig. 4 even in a state of no wind and no snow. This makes it easier to maintain the same posture. This condition is disliked from the perspective of environmental harmony as it disrupts the aesthetic balance, and is also undesirable as it poses a risk of falling to nearby residents. On the other hand, as shown in Fig. 2, there is also known a multi-conductor interphase spacer in which conductor spacers 11 are fixed to both the upper and lower ends of a rod-shaped insulating member 13, but such a fixed type does not allow the conductors to sway due to the wind. In some cases, a large bending moment is generated at the base of the conductor spacer, which has the disadvantage that that part is easily destroyed.

(Problems to be solved by the invention) The present invention solves the above-mentioned conventional problems, does not take an unnatural posture as shown in Fig. It was developed for the purpose of being a multi-conductor interphase spacer that will not damage the conductor spacer due to the bending moment when gearoping occurs, and will also reliably protect the conductor from load fluctuations due to three-way jump and gearoping. It is something that

(Means for Solving the Problems) The present invention pivots a conductor spacer to the upper phase side end fitting of a bar-shaped insulating member constituting the interphase spacer so as to be able to swing in a direction perpendicular to the line, and It is characterized in that a conductive spacer is fixed to the metal part so as not to be able to swing.

(Example) Next, the present invention will be described in detail with reference to the embodiment shown in FIG. is the lower phase side end fitting provided at the lower end. The upper phase side end fitting 2 has conductor clamps 5 at both ends for clamping a plurality of conductors 4 on the upper phase side.
A conductor spacer 6 having a conductor spacer 6 is pivotally attached by a pin 7 so as to be swingable in a direction perpendicular to the line, thereby preventing bending stress from occurring when three jumps or gearlopping occur. On the other hand, a fixed conductor spacer 9 having conductor clamps 8 at both ends for clamping a plurality of conductors 4 on the lower phase side is fixed to the lower phase side end fitting 3 of the rod-shaped insulating member 1 so as not to swing. ing. Note that the shapes and structures of the conductor spacers 6 and 9 are not limited to those shown in the drawings, and the conductor spacer 6 on the upper phase side has a conductor clamp 5 and the upper phase side end fitting 2 of the rod-shaped insulating member 1. In order to prevent collisions, means for limiting the maximum swing angle may be provided.

(Function) In this structure, the plurality of conductors 4 on the upper phase side are clamped by the conductor clamp 5 of the conductor spacer 6 at the upper end of the rod-shaped insulating member 1, and the plurality of conductors 4 on the lower phase side are clamped on the lower phase side. There is no difference from the conventional spacer in that it is used as an interphase spacer that maintains the distance between each phase of a multi-conductor power transmission line by clamping the side conductor spacer 9 with the conductor clamp 8. However, in the present invention, the conductor spacer 6 on the upper phase side is pivotally attached to the upper phase side end fitting 2 of the rod-shaped insulating member 1 so that it can swing in a direction perpendicular to the line. To prevent a large bending moment from being generated at the base of a conductor spacer 6 even when a plurality of conductors 4 twist and shake, and to prevent damage to the conductor spacer 6 and the upper phase side end fitting 2 due to this. I can do it. Furthermore, in the present invention, since the lower phase side conductor spacer 9 is fixed to the lower phase side end fitting 3 of the rod-shaped insulating member 1 in a non-swiveling manner, the lower phase side conductor spacer 9 can be attached to the actual line. Even if the conductor spacer 9 receives a force such that it is pushed up by the conductor 4, the conductor spacer 9 will not assume an unnatural tilted posture as shown in FIG.

(Effects of the invention) As is clear from the above explanation, the present invention is capable of keeping the distance between each phase of a multi-conductor power transmission line constant and reliably protecting the conductors from load fluctuations due to three-way jumps and gearlopping. ,
Since the conductor spacer on the lower phase side does not tilt, the aesthetic balance in terms of environmental harmony is not disturbed.
Moreover, in the present invention, the bending moment that occurs during three-way jump or gear locking is released because the conductor spacer on the upper phase side is pivotally attached so that it can swing freely, and there is no possibility of damage to the conductor spacer, etc. . Therefore, the present invention has extremely great practical value as a multi-conductor interphase spacer that eliminates the problems of the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view showing a conventional example of a fixed conductor spacer type,
3 and 4 are front views showing conventional examples of the swinging conductor spacer type. 1: Rod-shaped insulating member, 2: Upper phase side end fitting, 3:
Lower phase side end fitting, 6: Conductor spacer, 9: Conductor spacer.

Claims (1)

[Scope of utility model registration request] A conductor spacer 6 is pivotally attached to the upper phase side end fitting 2 of the rod-shaped insulating member 1 constituting the interphase spacer so as to be swingable in a direction perpendicular to the line, and a conductor spacer 9 is swingably attached to the lower phase side end fitting 3. A multi-conductor interphase spacer characterized by being fixed immovably.