JP2868597B2 - Transmission line replacement method and rope recovery machine for the method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for safely and efficiently replacing an aged electric wire and a rope recovery machine used in the method.

[Conventional technology]

Hanging wire method is often used to replace existing wires. In this method, a single-wheel, two-wheel, three-wheel, cross, or X-shaped hanging wheel is attached to the existing wire, and the new wire is extended using the lower wheel, but the load and tension are applied to the existing wire. Because it may cause wire breakage or disconnection of the aged wire,
A gripping wheel construction method capable of removing an existing electric wire with low tension (this method has already been established as a new method) and a method as disclosed in JP-A-2-36705 have been developed.

[Problems to be solved by the invention]

In the gripping wheel construction method, a supporting rope is stretched between the steel towers of the electric wire to be removed, and when the wire tension is relaxed, the gripping wheel that grasps the electric wire is connected with a connecting rope, and the supporting rope is appropriately spaced (standard 20 mm).
m), the wire wheel after gripping the wire is wound up with the connecting rope and retracted together with the wire.However, since a large number of wheel wheels and supporting ropes need to be stretched, work efficiency and work costs are reduced. The problem remains.

On the other hand, the construction method disclosed in the above-mentioned gazette, a main line is stretched between the spans, the lashing machine is moved along the line, and the extending rope to be unreeled from the machine is longitudinally attached to the existing electric wire and further unreeled from the same machine Spirally wind the cord to bind the wire and the extension rope. Then, the extension wire is pulled, the existing wire is withdrawn from one end without tension, and the new wire connected to the other end of the extension wire is wired. Therefore, although a hanging wheel is not required, the work efficiency is not yet sufficient because the main line is established in advance.

In addition, there is no specific technique for automatically removing the spirally wound cord from the withdrawn electric wire, and there is a concern that removing the cord takes time and reduces the efficiency of re-placing.

In view of the above, an object of the present invention is to provide a method for replacing a power transmission line that does not require a parent wire and can efficiently collect a reinforcing rope, and a rope recovery machine used in the method.

[Means for solving the problem]

The method of the present invention is to run a rope wrapping machine that feeds a reinforcing rope from a fryer that rotates around the electric wire on the existing wire of the span to be replaced and spirally winds the reinforcing rope, Connect the new cable to one end of the existing cable,
Then, while winding the existing electric wire from the other end side on the ground, and rewinding and separating and collecting the reinforcing rope with a rope collection machine equipped with a winding drum that goes around the outer periphery of the electric wire, feed out the new electric wire and It is a replacement.

In this construction method, the existing wire and the new wire are interposed between the existing wire and the new wire, and then the existing wire and the new wire are replaced, and then the wire rope is wound up and the new wire and the new wire are replaced. You can also.

Next, the rope recovery machine of the present invention used in the above-mentioned construction method,
Provided between the wire take-up device and the winding machine,
An inner trunk supported by a gantry, an outer trunk concentrically arranged on the inner trunk, a rotation driving means for the outer trunk, a winding drum mounted on the outer periphery of the outer trunk, a rotation driving means for the drum, and a reinforcing rope on the electric wire And a guide means for guiding the wire onto the drum body, passing the wire through the inner body, rotating the outer body at a speed corresponding to the winding speed of the wire, and reinforcing the wire at the entrance side of the inner body. Rewind the rope,
It is configured to sequentially wind up on a winding drum that rotates integrally with the outer body and orbits the outer periphery of the electric wire. It is more desirable for this recovery machine to provide guides at the entrance and exit of the inner trunk for holding the running electric wire at the center of the inner trunk.

[Action]

In the above-mentioned construction method, a rope wrapping machine is directly attached to an existing electric wire to be replaced and a reinforcing rope is wound around the outer periphery of the electric wire, so that a parent wire is unnecessary.

In addition, since the existing electric wire is reinforced with the reinforcing rope and the electric wire is pulled out together with the rope, an extension rope extending along the existing electric wire is not required.

Furthermore, since the reinforcing rope is efficiently unwound and collected by the rope collecting machine in front of the winding section while winding the existing electric wire, a drop in the transfer efficiency due to poor recoverability does not occur.

In addition, according to this method, the existing electric wire is subjected to pull-out tension, and the existing electric wire is guided to the ground through a metal wheel.
Although it cannot be said that it is 100% prevented, the breakage of wires when passing through a wheelbarrow, etc. is greatly reduced compared to the suspension metal method because the reinforcing rope works as a cushioning material. Even if the existing wire breaks or breaks, the spirally wound reinforcing rope grips the wire and prevents the wire from jumping up, dropping the broken wire, and breaking the pulling force at the break. There is no hindrance to replacement work.

In addition, the rope collecting machine of the present invention rewinds the reinforcing rope while rotating the outer drum around the winding drum on the outer drum to rotate around the outer side of the electric wire, and sequentially winds it on the drum. Work is automated. When the recovery machine is provided with the above-described guide, the wire is held at the center of the inner trunk, the winding tension of the rope is stabilized, and the recovery operation is not disturbed.

〔Example〕

One embodiment of the method of the present invention will be described with reference to FIGS. 1 and 2. In the figure, the existing electric wire 1 is replaced between the towers A and C.

First, a self-propelled machine (not shown) for towing a pilot rope runs on the electric wire 1 from the towers A to B and from B to C, respectively, and the pilot rope 9 and the suspension wheel 10 supporting the pilot rope 9 are run. Place.

Next, a rope wrapping machine 3 is attached to the electric wire 1 at the tower A, a pilot rope 9 is connected to the winding machine, and the rope 9 is pulled out at the tower B (the lifting wheel is collected here). The reinforcing rope 2 drawn out from the fryer of the winding machine is spirally wound on the electric wire 1 while moving the winding machine 3 toward the steel tower B. Further, when the winding machine 3 reaches the tower B,
The pilot rope between B and C is reconnected, and the rope is pulled out at the steel tower C, and the reinforcing rope 2 is wound around the electric wire between B and C. FIG. 1 shows a state in which the reinforcing rope winding has progressed to the vicinity of the center of the span between B and C.

Next, when winding of the reinforcing rope between the towers A and C is completed, a wheel set 11 for passing electric wires through the respective towers is set, and then, at the tower A section, a new electric wire shown in FIG. Connect the extension rope 4 and pull out 4 with the extension car 6 while the tower C
Lower the end of the wire 1 on the ground. Then, the end of the electric wire is passed through a take-up device 7 using a winding type rolling wire or a winch,
The reinforcing rope is fixed to the drum of the rope collecting machine 5 behind the wire 7, and the end of the electric wire passed through the collecting machine is fixed to the winder 8.

After that, the existing wire is wound up while driving the devices 5 to 8 to separate and collect the reinforcing rope 2 by the collecting machine 5, and 4 is fed out in accordance with this. In the case where No. 4 is an extension rope, a new electric wire is connected to the end of the rope, and after replacing the existing electric wire with the extension rope, the extension rope is wound up and replaced with the new electric wire. The extension rope is used in order to prevent the influence of the twisting torque of the existing electric wire or the like on the newly installed electric wire.

3 to 5 show an example of the rope winding machine 3 used in the method of the present invention.

Reference numeral 31 in the figure denotes a center drum having a brake 32. The drum is rotated by a motor M provided with a pinion gear meshed with the integral gear 33 to wind up the reinforcing rope 2. The motor M is detachable, and is removed after the reinforcing rope is wound around the center drum.

Reference numeral 34 denotes a guide for feeding out a reinforcing rope including the rollers a to d and f to j and the eye plate e. Two reinforcing ropes are wound on the center drum 31. The two ropes pass through a to e to reach the friction roller f, and then one rope passes through g and i and the other rope passes through g and i. It is fed out onto the electric wire 1 passing through the center drum via h and j.
The rollers a, b, and c use long rollers parallel to the drum axis in order to cope with the axial fluctuation of the drum at the rope feeding point.

Reference numeral 35 denotes a fryer for supporting the feeding guide 34. A planetary gear 36 is attached to this fryer, and when the friction roller f rotates with the feeding of the reinforcing rope 2, this f
The planetary gear 36 revolves around the sun gear 37 provided at the end of the center drum while rotating, and the fryer 35 rotates around the electric wire 1.

Numeral 38 is a running roller provided before and after the center drum, and the roller rolls on the electric wire to run the winding machine.
Numeral 39 is a counterweight for maintaining the posture of the winding machine.

6 and 7 show an example of a rope recovery machine.

In the rope collecting machine 5, an outer shell 53 rotated by a motor 54 is arranged concentrically around an outer circumference of an inner shell 52 supported by a gantry 51.
Also, on the outer periphery of the outer shell 53, two winding drums 55 for rotating the outer shell to orbit the outer periphery of the electric wire and a motor 56 for individually rotating each drum via a power transmission element including a bevel gear.
And reinforcement rope guiding means. The illustrated guide means includes a guide roller 57 having a fixed position relative to the drum.
And a traverser 58 that is linked to the drum using a chain, sprocket, and gears. Guide on drum while transferring.

Reference numeral 59 denotes an electric wire guide provided at the entrance and exit of the inner trunk 52. This guide guide 59 holds the electric wire 1 passed between the upper roller 60 and the openable lower roller 61 at the center of the inner trunk. When the electric wire 1 is eccentric from the center of the inner trunk, there is a possibility that the winding tension of the reinforcing rope 2 fluctuates and the work must be interrupted. Trouble does not occur, and collection work becomes smooth.

The electric wire 1 passes through the inner trunk 52 after the removal of the reinforcing rope, and is wound up by the winder 8 described above.

 The results of verification of the method of the present invention are described below.

An electric wire (HDCC ²⁰⁰ mm ² ) 1 is laid with a tension of 1250 kg in a real-scale simulated span having a span length L = 160 m shown in FIG. 8, and a reinforcing rope 2 made of aramid fiber is wound on the electric wire by using the above-mentioned winding machine. Was wound in two articles. When wrapping the reinforcing rope, make the wire inclination angle 10
Winding in the uphill running and winding in the downhill running were tried for each of the two forms of ゜ and 20 ゜, and both were successfully performed.

Next, the wire rope 4 was connected to the end of the electric wire, and the electric wire was pulled in the direction of the arrow in the figure and removed. During this process, the wire 1 was intentionally cut at the point x, and the cut end stopped at a separation distance of 26 cm. The reinforcing effect of the reinforcing rope and the effect of preventing the cut end from sagging were sufficiently exhibited, and the work could be continued. Was.

In addition, when the existing overhead ground wire was replaced with a practical transmission line using the same method, it was possible to carry out the work without breaking the existing ground wire.

〔effect〕

As described above, according to the replacement method of the present invention, it is not necessary to lay the main line, and it is not necessary to attach the extension rope to the existing electric wire.

In addition, since the existing electric wire is wound while the spirally wound reinforcing rope is unwound with a rope recovery machine and separated and collected, the work can be carried out smoothly, and the existing electric wire can be efficiently changed without labor and time. it can.

Furthermore, since the reinforcement, gripping, and buffering action by the reinforcing rope can be obtained, it is possible to prevent the existing wires from being cut or broken, and even if the broken or broken wires are generated, the reinforcing rope is not rebounded. Since it prevents drooping of the up and broken wires and interruption of the pulling force, the work can be performed safely and without any trouble, and the effect that the aged wire can be replaced more advantageously than the conventional method can be obtained. Can be

[Brief description of the drawings]

1 and 2 are conceptual views showing an example of the method of the present invention, FIG. 3 is a plan view of an example of a rope winding machine used in the method of the present invention, FIG. FIG. 5 is a front view, FIG. 6 is a plan view of a rope recovery machine used in the above-described method,
FIG. 7 is a side view, and FIG. 8 is a conceptual diagram showing a verification test method. DESCRIPTION OF SYMBOLS 1 ... Existing electric wire, 2 ... Reinforcement rope, 3 ... Rope wrapping machine, 4 ... New construction wire or extension line rope, 6 ... Extension line vehicle, 7 ... Taking-up device, 8 ... Winding machine , 9 ... pilot rope, 10 ... hanging wheel, A, B, C ... steel tower, 51 ... stand, 52 ... inner body, 53 ... outer body, 54 ... motor, 55 ... winding Drum, 56 ... Motor, 57 ... Guide roller, 58 ... Traverser, 59 ... Guide guide.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Mitsuhiro Yasunaga 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Inside Kansai Electric Power Company (72) Masakazu Kihara 1-1-1, Shimaya, Konohana-ku, Osaka-shi, Osaka No. 3 Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Hideaki Miyazaki 1-3-1, Shimaya, Konohana-ku, Osaka City, Osaka Prefecture Sumitomo Electric Industries, Ltd. Osaka Works (56) References JP-A-1-91602 (JP, A) JP-A-2-36705 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 1/02

Claims (4)

(57) [Claims] 1. A rope wrapping machine for feeding a reinforcing rope from a fryer rotating around the electric wire is run around an existing electric wire of the span to be replaced, and the reinforcing rope is spirally wound.
Next, connect the new wire to one end of the existing wire,
While winding the existing electric wire from the other end on the ground, and rewinding and separating and collecting the reinforcing rope with a rope collection machine equipped with a winding drum that goes around the outer periphery of the electric wire, feed out the new electric wire and replace it with the existing electric wire A method for replacing power transmission lines. 2. An existing wire and a new wire are interposed between the existing wire and the new wire, and the existing wire and the new wire are first replaced. Then, the wire rope is wound up and the new wire and the new wire are inserted. The method according to claim 1, wherein the transmission line is replaced. 3. An apparatus for separating and recovering a reinforcing rope spirally wound around an outer periphery of an electric wire by winding the electric wire take-up device and a winder, wherein the inner rope supported by a gantry and the inner rope are concentric with each other. An outer shell to be arranged, a rotation driving means for the outer shell, a winding drum mounted on the outer circumference of the outer shell, a rotation driving means for the drum, and a guide means for guiding a reinforcing rope on an electric wire onto the drum body. , Passing the electric wire through the inner trunk, rotating the outer trunk at a speed corresponding to the winding speed of the electric wire, rewinding the reinforcing rope on the electric wire at the entrance side of the inner trunk, and rotating integrally with the outer trunk to rotate the electric wire. A rope collecting machine that winds up sequentially on a winding drum that goes around the outer circumference. 4. A guide provided at an entrance and an exit of the inner trunk for holding a running electric wire at the center of the inner trunk.
The rope recovery machine according to item 1.