JPH0159562B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for installing an optical communication line by attaching the optical communication line to an overhead line such as an overhead ground wire or an overhead power transmission line.

BACKGROUND ART Consideration is being given to attaching optical communication lines to overhead lines such as overhead ground wires of overhead power transmission lines, overhead power transmission lines, and shielding lines to communicate with substations and power plants, or to monitor steel towers.

In this case, there are two problems when installing the optical communication line alongside the overhead line. One of these is that the installation height is several tens of meters, and the other is that the distance between the steel towers is long, several hundred meters.

For this reason, when the current installation method shown in Figure 1 is applied to the installation method of optical communication lines with attached racks, there is a drawback that the optical communication lines, which are susceptible to tension and straining, deteriorate due to the two problems mentioned above. Ta. That is, overhead wires 2 made of overhead ground wires are installed at the upper ends of steel towers 1 that are erected at predetermined intervals. In order to attach an optical communication line 3 to the overhead line 2, a metal wheel 4 is suspended from the upper end of the steel tower 1. The optical communication line 3 is launched from a wire storage body 5 such as a drum on the ground, turned horizontally at the metal wheel 4 at the left end, passed over each metal wheel 4, and then extended to a predetermined location. A tension is applied to the wire, which is attached to the overhead wire 2, and is supported by a support body. In such a method, not only is a large tension applied to the optical communication line 3 for stretching the line, but also a large straining force is applied when the optical communication line 3 passes through the metal wheel 4. Therefore, the optical communication line 3 needs to be fairly strong, in other words, has a large outer diameter, which poses problems in terms of cost and wind pressure load.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for installing an optical communication line on an overhead line while preventing large tension or straining force from acting on the optical communication line.

The optical communication line attachment method according to the present invention involves suspending an optical communication line storage body storing an optical communication line from an overhead line and moving it in the air, The apparatus is characterized in that the apparatus is installed along the overhead wire by sequentially supporting the overhead wire with a supporting member.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIG. At the upper ends of steel towers 1 erected at predetermined intervals, overhead wires 2 made of overhead ground wires are installed by a known method. The aerial vehicle 6 is made to travel along the overhead wire 2 using the overhead wire 2 as a support. In front of the air carrier 6, an optical communication line storage body 5, in which the optical communication line 3 is stored by winding it around a drum, is suspended from the overhead line 2 via a traveling support 7 and is made to run in the air. , the optical communication line 3 is successively drawn out from this wire storage body 5 and made to run along the overhead line 2. In this case, the optical communication line 3 is desirably a non-metallic optical communication line that does not contain metal wires in order to make the wire storage body 5 as light as possible. It is recommended to use coated optical fibers. An attachment support 8 such as a spiral preform rod is mounted on the spacer 6 in advance, and the attachment support 8 is wrapped around the overhead wire 2 and the optical communication line 3 attached thereto using a winding machine or the like. The optical communication line 3 is sequentially attached to and supported by the overhead line 2 by wrapping it around the outer periphery. By sequentially performing such operations, the optical communication line 3 is attached to the overhead line 2 in a predetermined section.

Note that the present invention is not limited to the case where the optical communication line 3 is attached to an overhead line 2 made of an overhead ground wire, but is also applicable to the case where the optical communication line 3 is attached to an overhead line 2' made of an overhead power transmission line, etc. This can be similarly applied to cases where

Moreover, it goes without saying that the wire storage body 5 may be a wire storage body in which an optical communication line is coiled in a container.

As explained above, the method for installing an optical communication line according to the present invention involves suspending an optical communication line storage body storing optical communication lines from an overhead line and moving the optical communication line in the air while letting out the optical communication line. I made it follow the line, so
Optical communication lines are no longer subjected to strain when they pass through metal cars or large tensions when they are stretched across metal cars between towers, and even thin optical communication lines can be stretched overhead without damaging them. It is possible to install a support on the line. Further, since the optical communication line does not need to withstand large tensions, it can be thin and therefore lightweight, so it can be easily stored as a wire storage body and moved through the air.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the implementation state of the conventional installation method;
FIG. 2 is an explanatory diagram showing an example of the implementation state of the laying method according to the present invention. 1... Steel tower, 2... Overhead line, 3... Optical communication line,
5... Optical communication line storage body, 6... Airborne device, 7... Running support, 8... Mounting support.

Claims (1)

[Claims] 1. In an optical communication line attachment method in which an optical communication line is attached to an overhead line in the air, an optical communication line storage body storing the optical communication line is suspended from the overhead line and moved in the air; 1. A method for installing an optical communication line along the overhead line, the optical communication line being fed out from a wire storage body and being installed along the overhead line, and sequentially supported by a support member on the overhead line.