JPH0683529B2 - How to spirally wind a linear body around an overhead ground wire - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of spirally winding a linear body such as an optical fiber cable around an overhead ground wire.

[Prior art and its problems]

It is becoming practical to use an overhead power transmission line as an optical communication line by spirally winding an optical fiber cable around an overhead ground wire. Conventionally, in the case of spirally winding an optical fiber cable around an overhead ground wire in order to form such a line, the method shown in FIG. 2 has been adopted. In this method, the winding machine 12 and the towing vehicle 13 are mounted on the overhead ground wire 11 and the optical fiber cable 14 is wound around the overhead ground wire 11 while pulling the winding machine 12 by the towing vehicle 13. Is.

The winding machine 12 used here is, for example, Shoukaisho 60-79205.
As described in the publication, a shaft portion that does not rotate around the overhead ground wire 11, a rotating frame body that rotates around the shaft portion, and a drum 15 attached to the rotating frame body are provided. Since the optical fiber cable 14 is pulled out from the drum 15 when the vehicle is pulled by the towing vehicle 13, the drum 15 rotates about its own axis, and when the drum 15 rotates, the drum 15 is imaginary due to the meshing of planetary gears inside the rotating frame. It is a mechanism that revolves around the ground line 11. For this reason the winding machine
When 12 travels on the overhead ground wire 11, the optical fiber cable 14 pulled out from the drum 15 is spirally wound around the overhead ground wire 11.

Further, the towing vehicle 13 sandwiches the overhead ground wire 11 between the rollers 16 and 17, and rotates the roller 16 by an engine or a motor incorporated therein, whereby the tow vehicle 13 travels on the overhead ground wire 11 by itself.

The above-described winding method can be used not only for winding an optical fiber cable, but also for winding a wire material to prevent snow accretion or to reduce wind noise.

As described above, conventionally, the winding machine and the towing vehicle are placed on the overhead ground wire for winding, but since the winding machine and the towing vehicle are considerably heavy, in the case of a relatively thin overhead ground wire, The degree of sag of the overhead ground wire may become excessive, the winding machine may contact the overhead power transmission line below it, or the tension of the overhead ground wire may exceed the allowable tension of the G arm. There was a problem that I could not do it.

[Means for solving problems and their effects]

In order to solve the above-mentioned problems of the prior art, the present invention mounts a winding machine for a linear body (such as an optical fiber cable or a normal wire rod) on an aerial ground wire, and installs a self-propelled towing vehicle in the Put on the overhead power line under the ground line, connect the above winding machine and the towing vehicle with a tension member (wire or rod, etc.), and pull the winding machine above the overhead ground line with the tow vehicle on the overhead power line. , Is characterized by spirally winding a linear body around an aerial ground wire.

In this way, the weight applied to the overhead ground wire is significantly reduced, and the overhead power transmission line is loosened like the overhead ground wire. Therefore, even if the overhead ground wire is thin, it is possible to spirally wind the linear body. .

〔Example〕

FIG. 1 shows an embodiment of the present invention. In the figure, 18 is a steel tower, 11 is an overhead ground wire installed between the steel towers 18 and 18, and 19 is an overhead power transmission line installed below it.

This method separates the winding machine 12 and the towing vehicle 13,
12 is placed on the overhead ground line 11, a towing vehicle 13 is placed on the overhead power transmission line 11, and both are connected by a wire 20. Tow vehicle 13 in this state
The optical fiber cable 14 drawn out from the winding machine 12 is spirally wound around the overhead ground wire 11 by running the cable and pulling the winding machine 12 to move on the overhead ground wire 11.

The winding machine 12 may have a structure in which the drum is rotated around the aerial ground line by meshing with the planetary gears as described in the conventional example, or the traveling distance is detected and the drum is aerialized by the motor according to the detected traveling distance. The structure may be such that it rotates around the ground line, and the structure is not particularly limited.

〔The invention's effect〕

As described above, according to the present invention, only the winding machine rides on the overhead ground wire, the weight is significantly reduced, the sag of the overhead ground wire is reduced, and the overhead power transmission line is also the weight of the towing vehicle. As a result, the winding machine will loosen in almost the same state as the overhead ground wire, so the winding machine will not contact the overhead power line
Also, the load applied to the G arm of the overhead ground wire is reduced. Therefore, there is an advantage that the linear body can be wound even if the overhead ground wire is thin.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a method for spirally winding a linear body around an overhead ground wire according to the present invention, and FIG. 2 is a side view showing a conventional method for spirally winding a linear body. 11 …… Overhead ground wire, 12 …… Winding machine, 13 …… Trailer, 14…
… Optical fiber cable, 15… drum, 19… overhead power line, 20… wire.

Claims (2)

[Claims] 1. A winding machine for a linear body is placed on an overhead ground wire, and a self-propelled towing vehicle is placed on an overhead power transmission line below the overhead ground wire, so that the winding machine and the towing vehicle are tension members. A method of spirally winding a linear body around an overhead ground wire, wherein the linear body is spirally wound around the overhead ground wire while pulling a winding machine on the overhead ground wire with a towing vehicle on the overhead power transmission line. . 2. The method according to claim 1, wherein the linear body is an optical fiber cable.