JPH0687087B2 - How to wind a wire around an overhead wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a line for an overhead wire for helically winding a linear body such as an optical fiber cable or a heating wire for snow melting around an overhead wire such as a power transmission line. A method of wrapping a body.

(Prior Art) In recent years, it has been put into practical use to spirally wind an optical fiber cable (linear body) around an overhead wire and use the overhead power transmission line as an optical communication line. Conventionally, when an optical fiber cable is spirally wound around an overhead wire to configure such a line, a method as shown in FIG. 6 or 7 has been adopted. That is, in the method shown in FIG. 6, a self-propelled winding machine d is mounted on an overhead line c installed between steel towers a and b, and an engine or a motor equipped with the winding machine d is mounted on the winding machine d. The optical fiber cable e is wound around the overhead wire c while self-propelled from one steel tower a side to the other steel tower b side by a self-propelled mechanism (not shown) such as. Further, in the method shown in FIG. 7, the tow rope g is stretched on the overhead line c by the hanging wheel f in advance, and the pulling winder d'is attached to the overhead line c installed between the towers a and b. The winding machine d ′ is placed and connected to the winding machine d ′, and the pulling rope g is pulled to pull the winding machine d ′ from one steel tower a side to the other steel tower b side. The optical fiber cable e is wound around the overhead wire c.

(Problems to be Solved by the Invention) The former method shown in FIG. 6 requires a self-propelled mechanism of weight including an engine or a motor having an output capable of climbing a steep slope. The total weight of the machine d is increased, and workability is poor when performing work for moving the winding machine d from one of the steel towers a and b to the other (steel tower dodging work). Further, the increase in the weight of the winding machine d causes an increase in the sag (hanging amount) of the overhead wire c due to mounting the winding machine d on the overhead wire c,
There is a possibility that the winding machine d and the overhead wire c may come into contact with the overhead wire below, which is dangerous and the tension of the overhead wire c increases.
It is dangerous because the strength of the overhead wire and the strength of the steel tower are not enough.

In the latter method shown in FIG. 7, the traction rope g must be stretched in advance over the entire length of the overhead line c between the steel towers a and b, which requires a lot of time and personnel.

The present invention has been made in view of the above circumstances, and there is no possibility of causing workability deterioration and danger due to an increase in the weight of the winding machine, and the time and personnel for tensioning the tow rope are small, and the linear shape It is an object of the present invention to provide a method for winding a linear body around an overhead wire so that the body can be efficiently wrapped around the overhead wire.

(Means for Solving Problems) In order to solve the above-mentioned conventional problems, a method of winding a linear body around an overhead wire of the present invention is a method of winding a towed linear body between towers. From the tower-side high point of one of the overhead wires installed on the tower to the lowest point of the sag of the middle part by its own weight, and the guide carriage attached to one end of the tow rope from the tower-side high point of the other overhead wire. It is run by its own weight to the lowest point of slackness, and at the lowest point of slackness, the connecting body of the winding machine and the connected body of the guide carriage are brought into contact with each other to connect them, and then the tow rope is pulled. And to wind the winding machine together with the guide carriage from the lowest sag point of the overhead wire toward the other tower-side high point, thereby winding the linear body around the overhead wire. is there.

(Operation) Between the high point on one tower side of the overhead line installed between the towers and the low point on the approximate middle part, the winding machine is self-propelled by gravity.
Further, between the low point and the other tower-side high point, the winding machine is connected to the tow rope and tow.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 is a side view showing an embodiment of a method for winding a linear body around an overhead wire according to the present invention. In the figure, 1 and 2 are steel towers, and 3 is installed between these steel towers 1 and 2. It is an overhead line. The method of the present invention is carried out by using a tow-type winding machine 4 having no self-propelled mechanism and a tow rope 6 having a guide carriage 5 attached to one end thereof. The winding machine 4 basically has a conventionally known structure, and as shown in FIG. 3, a shaft portion 7 that does not rotate around the overhead wire 3 and a rotating frame body 8 that rotates around the shaft portion 7.
And a drum rotatably supported on both sides of the rotary frame 8.
9,9 and roller mounting block 1 fixed before and after the shaft 7.
0, 11, a front roller 12 and a backup roller 13 rotatably supported by the front roller mounting block 10, and a rear roller 14 rotatably supported by the rear roller mounting block 11.
A rotation transmission mechanism 15 is provided between the rotary frame body 8 and the front roller mounting block 10, and a counterweight 16 hangs down from the lower surface of the front roller mounting block 8. Then, the overhead wire 3 is inserted into the shaft portion 7, the front and rear rollers 12, 14 are brought into sliding contact with the overhead wire 3, and the backup roller 13 below the front roller 12 is passed through the overhead wire 3. The front roller 12 is pressed. In this state, when the winding machine 4 travels in the direction of the arrow in FIG. 3, the front and rear rollers 12, 14 and the backup roller 13 rotate, and the rotation of the front roller 12 has a planetary gear (not shown). It is transmitted to the rotary frame body 8 via the transmission mechanism 15, the rotary frame body 8 rotates, and the rotary frame body 8 is rotated.
The drums 9 and 9 revolve around the overhead line 3 as they rotate. Therefore, when the winding machine 4 travels on the overhead wire 3, the optical fiber cables (linear bodies) 17, 17 are pulled out from the drums 9, 9 and wound around the overhead wire 3 in a spiral shape.

Front roller mounting block of the winding machine 4 configured as described above
A connecting body 18 is attached to the front surface of 10. The connected body
Reference numeral 18 denotes a substantially C-shaped main body 18a whose peripheral edge is partially open as shown in FIG. 4, and an opening / closing body 18b rotatably attached to one end of the main body 18a so as to open and close the opening. Become. The opening / closing body 18b is biased by a spring (not shown) in a direction to close the opening.

The tow rope 6 is stretched by a suspension wheel 19 on the overhead line 3 as shown in FIGS. 1, 2 and 5, and the guide carriage 5 attached to one end thereof is shown in FIG. Also, as shown in FIG. 5, a pair of rollers 5b and 5c are provided in the upper part of the hollow box-shaped bogie main body 5a, and one backup roller 5d is provided in the lower part.
Each is rotatably supported. In front of the trolley body 5a
Insertion holes 5e and 5f through which the overhead wire 3 is inserted are formed in the rear surface. One end of the tow rope 6 is attached to the rear surface of the carriage main body 5a. The overhead wire 3 is inserted into the trolley body 5a,
The upper rollers 5b, 5c and the lower roller 5d are in sliding contact with the overhead wire 3 so as to sandwich the overhead wire 3 and run on the overhead wire 3. On the front of the trolley body 5a, a U-shaped connected body
20 is attached, and the connected body 20 is the connecting body 18 of the winding machine 4.
It is designed to be detachably connected to.

Then, the winding machine 4 is placed at a high point on one side of the overhead line 3 on the side of the steel tower 1, and the winding machine 4 is mounted on the overhead line 3 at the lowest point of the sag of the overhead line 3 between the steel towers 1 and 2. By traveling by its own weight to the wrapping machine 4, the optical fiber cables 17, 1 from the high point on one steel tower 1 side of the overhead wire 3 to the lowest sag point are
Wrap 7 After that, the guide carriage 5 at one end of the tow rope 6 stretched by the suspension wagon 19 from the high point on the other tower 2 side of the overhead line 3 to the lowest point of the sag is attached to the other tower 2.
The connected body 20 is connected to the connecting body 18 by running from the side toward the lowest sag point and bringing the front surface of the guide carriage 5 into contact with the front surface of the front roller mounting block 9 of the winding machine 4. .
That is, when the connected body 20 contacts the opening / closing body 18b of the connecting body 18, the opening / closing body 18b is opened against the biasing force of the spring, and the connected body 20 is connected to the connecting body 18 via the opening. After the engagement, the opening / closing body 18b is returned by the biasing force of the spring and the opening is closed, so that the connecting body 18 and the connected body 20 are connected to each other (shown in FIG. 1). Status). After that, by pulling the pulling roller 6, the winding machine 4 is caused to travel from the lowest sag point of the overhead wire 3 to a high point on the side of the other tower 2 so that the winding machine 4 can move the overhead wire 3 By winding the optical fiber cables 17 and 17 from the lowest point of sag of the tower to the high point of the other tower 2 side, the overhead line 3 between the two towers 1 and 2
The winding of the optical fiber cables 17, 17 is completed over the whole.

The optical fiber cables 17, 17 are spirally wound around the overhead line installed after the other steel tower 2 in the same manner as described above.

(Effects of the Invention) As described above, the method of winding the linear body around the overhead wire of the present invention is
A towing-type wire winding machine was run by its own weight from the high point on one tower side of the overhead line installed between towers to the lowest point of sag in the middle, and was attached to one end of the tow rope. The guide carriage is run from the high point on the other tower side of the overhead line to the lowest point of slackness, and at the lowest point of slackness, the connecting body of the winding machine and the connected body of the guide carriage are brought into contact with each other to connect them. ,
After that, by pulling the tow rope and pulling the winding machine together with the guide carriage from the lowest point of sag of the overhead line toward the other high point on the tower side, the linear body is wound around the overhead line. To do.

Therefore, since the winding machine is a traction type that does not have a self-propelled mechanism, the weight of the entire winding machine is reduced, and the workability when performing the steel tower dodging work of the winding machine is improved, and the conventional There is no increase in the sagging of the overhead wire, there is no fear that the winding machine or the overhead wire will contact the overhead wire below it, and there is no increase in the tension of the overhead wire. The linear body can be efficiently wound around.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, and FIG. 1 shows an embodiment of a method of winding a linear body around an overhead wire according to the present invention. Fig. 2 is a side view of the state in which the linear body is wound between the point and the lowest point of sag, and Fig. 2 is a side view of the state in which the linear body is wrapped from the lowest point of sag of the overhead line to the other high-point side of the tower. FIG. 3 is a side view of a winding machine used in the method of the present invention, FIG. 4 is an enlarged view of a connecting portion between the winding machine and a guide carriage of a tow rope, and FIG. 5 is a sectional view of the guide carriage. FIGS. 6 and 7 are the same drawings as FIG. 1 showing different conventional winding methods. 1,2 …… Tower (tower), 3… Overhead line, 4 …… Winding machine, 5
...... Guide cart, 6 …… Tow rope, 17 …… Optical fiber cable (linear body), 18 …… Coupling body, 20 …… Coupling body

Claims (1)

[Claims] 1. A tow rope winding machine is run by its own weight from a high point on one tower side of an overhead line installed between towers to a lowest point of sag in an approximately middle portion by its own weight. A guide carriage attached to one end of the cable from the tower-side high point on the other side of the overhead wire to the lowest point of sag, and at the lowest point of sag, the connecting body of the winding machine and the connected body of the guide carriage are connected. By connecting by abutting each other, after that, by pulling the tow rope and pulling the winding machine together with the guide carriage from the lowest point of sag of the overhead wire to the other high point on the tower side, A method for winding a linear body around an overhead wire, comprising winding the linear body around the overhead wire.