JP3723482B2 - Transmission line replacement method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, these wires, in which one end of each of the four wires is secured to the balance yoke at the tip of the insulator device supported on both sides of the armature of the steel tower, are vertically and horizontally spaced. The present invention relates to a construction method in which a new electric wire is replaced with a hanging wire construction method with the apparatus attached.
[0002]
[Prior art]
As shown in FIGS. 11 and 13, one end of each of the four wires 54 is fastened to the balance yoke 53 at the tip of the insulator device 52 supported on both sides of the armature 51 of the steel tower with a space in the vertical and horizontal directions. When these electric wires 54 are replaced with new electric wires, a large number of reversing suspension wheels 55 are attached at intervals over the entire length of the upper and lower two wires on the left and right of the existing electric wires 54 to be replaced, as shown in FIG. As described above, the insulator device 52 supported on both sides of the arm metal is removed, and four aluminum gold wheels 56 are hung on the arm metal 51, and the tension of the existing electric wires 54 in the upper, lower, left, and right directions is released. Transfer to each aluminum gold wheel 56, with the existing electric wires 54 at each upper part as a master line, the existing electric wires 54 at each lower part are pulled out through a number of reversing suspension gold wheels 55, and the existing electric wires 54 at the lower part are pulled out. Newly connected to the rear end of the wire 54 And Nobesen the wire and tacked wires of these new. Next, when the tension of the upper existing electric wire 54 is released, each reversing type gold wheel 55 is reversed, and the upper existing electric wires 54 are respectively used as the reversing type hanging metal with the above-mentioned two new electric wires as a parent line. Drooping supported by the car. In this state, the upper existing electric wire 55 is removed in the same manner as described above, and a new electric wire is extended. Then, the aluminum metal wheel 56 is removed from the armature 51 of the steel tower, the insulator device 52 is attached, a new electric wire is secured to the insulator device 52 via the balance yoke 53, and the reversing type suspension wheel 55 is attached. Collect and complete the work.
[0003]
[Problems to be solved by the invention]
In the case of this construction method, as shown in FIG. 13, in the four wires 54 arranged at intervals in the vertical and horizontal directions, the upper two wires 54 and the lower two wires 54 are switched up and down. At the time of this crossing work, these electric wires hit each other, causing damage or interruption of the work due to entanglement, and therefore the work required careful attention and a long time. In addition, since the four aluminum gold wheels 56 are hung on one side of the arm 51, the insulator device 52 becomes an obstacle and must be removed to the ground once during the work. Many of the transmission lines are usually 60 to 70 m in height, and the weight of the insulator device is about 1 ton, so it took a lot of time to raise it again after it was lowered to the ground.
Therefore, instead of the above construction method, the four wires were spread horizontally and hung on four aluminum gold wheels that were hung side by side on the side of the armature of the steel tower. In this state, the four wires were newly installed. However, if these four wires are spread sideways, the wires will come close to the live wires on the other side of the armrest, and the wires will be covered with strong wind and will come into contact with the live wires. There is a fear.
[0004]
The present invention has been made in view of these points. When the upper and lower electric wires are exchanged, the electric wires can be easily exchanged without contacting each other. It provides a safe reworking method with no risk of contact.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided these electric wires in which one end of each of the four wires is retained on the balance yoke at the tip of the insulator device supported on each side of both ends of the armature of the tower. In the construction method to replace the wire with a new wire using the hanging wire construction method,
Attach a large number of reversing suspension wheels over the entire length of the existing wire to be replaced on the side where power transmission was stopped, for every two upper and lower strips,
For each of the balance yokes at both ends of the existing electric wire to be replaced, an array yoke mounting bracket is fixed, and a substantially horizontal plate-shaped array yoke is attached to the tip of each of these array yoke mounting brackets.
Of the existing wires to be replaced, remove the lower two wires from the balance yoke, join the wires on the other side of the arm metal with the tension released, place it on the reversing type lifting wheel, pull it out, and install Replace with electric wire,
Attach both ends of each of these new wires to the outer end of each of the above array yokes to widen the distance between the two new wires, and in this state, strain the two existing upper wires to be replaced. Loosen and reverse each suspension wheel and hang it on the new wire, pull these existing wires on the above-mentioned reversing wire wheel, pull out the wire, replace it with the new wire, The transmission line was replaced and fixed in the reverse order to return to the original position of the balance yoke.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 2, a balance yoke 3 is supported at the tip of the insulator device 2 supported on both sides of the armature 1 of the steel tower, and four wires are spaced apart from the top, bottom, left, and right of the balance yoke 3. Each end of 4 is retained. Although illustration is omitted, this is configured for each steel tower, and each electric wire 4 is retained at both ends thereof, and electrically connected to the next electric wire by a jumper wire at these retaining locations.
Next, a method for replacing these electric wires 4 with new electric wires will be described. As shown in FIG. 2, after stopping power transmission to the existing electric wire 4 to be replaced, the reversible suspension wheel 5 is attached at intervals over the entire length of the upper and lower two wires on the left and right sides of the electric wire 4. As shown in the figure, these suspension wheels 5 are provided with three-wheel suspension wheels 5b at both ends of a suspension rope 5a, one of these three-wheel suspension wheels 5b being an upper electric wire 4 and the other being a lower portion. A plurality of suspension wheels 5 are hung on the electric wire 4 and are connected by a coasting rope 5c fixed to the middle of the suspension rope 5a.
[0007]
Further, as shown in FIGS. 7 and 8, a mounting bracket 6 is fixed to the balance yoke 3, and a substantially horizontal plate-shaped array yoke 7 is mounted at the tip of the mounting bracket 6. Next, of the existing electric wires to be replaced, both ends of the lower two existing electric wires 4 are removed from the balance yoke 3 and connected to the right side electric wire of the armrest 1 through a joining line as shown in FIG. After that, each of the two aluminum gold wheels 8 hung on the arm 1 is placed on each other, and the tension of the existing two wires 4 in the lower part is released. As a result, as shown in FIG. 4, the lower two existing wires 4 are supported on the three-wheeled suspension wheel 5b below each suspension wheel 5 by using the upper two existing wires 4 as a parent line. . In this state, the lower two existing electric wires 4 are pulled out from one end by a usual method such as a winch, and then the new electric wires connected to the respective rear ends of these existing electric wires 4 are supported by each suspension wheel 5. And wire. After the two new wires are extended, as shown in FIG. 5, both ends of the new two wires 4 'are respectively attached to the outer end portions of the arrangement yoke 7 and temporarily fixed. As a result, the distance between the new electric wires 4 ′ increases, but the right electric wire 4 ′ protrudes to the outside of the electric wires 4 as shown in FIG. There is no risk of contact.
[0008]
Next, both ends of the upper two wires 4 are removed from the balance yoke 3 and are remounted on an aluminum gold wheel 8 hung on one side of the arm 1 as shown in FIG. As a result, as shown in FIG. 6, each of the suspension wheels 5 is inverted (downwardly outward), temporarily fastened to the outer end portion of the arrangement yoke 7, and two new wires that are widely spaced apart from each other. The suspension wheel 5 hangs below 4 ′. Then, the existing electric wires 4 supported by these suspension wheels 5 are pulled out from one end by a usual method such as a winch, and then a new electric wire 4 'is connected to the rear end of these existing electric wires 4 to The suspension wheel 5 is extended by supporting two new wires 4 '. After this wire extension, the ends of the new four-wire electric wires 4 'are returned and fixed to the original positions of the balance yoke 3 in the reverse order to the above order, and the arrangement yoke and a number of suspension wheels are fixed. 5 is collected.
[0009]
FIG. 9 shows the arrangement yoke mounting bracket 6 used in the above-described method. The tip eye 6b is fixed to one end of the rod screw 6a, and the first set clamp 6c is slid onto the rod screw 6a adjacent to the tip eye 6b. The crown is movably crowned, the second set clamp 6d is slidably crowned on the rod screw 6a so as to face the first set clamp 6c, and further, the rod outside the second set clamp 6d. Two nuts 6e are screwed onto the screw 6a, and a split pin 6f is provided at the other end of the bar screw 6a to prevent the nut 6e and the like from falling off the bar screw 6a. And the clamp bolt 6h is provided in the key type | mold part 6g of the one side of the said 1st set clamp 6c and the 2nd set clamp 6d, respectively. As shown in FIGS. 7 and 8, the arrangement yoke mounting bracket 6 has a first set clamp 6c and a second set clamp 6d hung on both ends of the vertical plate of the balance yoke 3, and a nut 6e is fastened to each clamp bolt 6h. Then, the side surface of the vertical plate is fastened to fix the balance yoke 3.
[0010]
FIG. 10 shows the arrangement yoke 7. The front end (downward in the figure) of the horizontally long plate-like body 7a is provided with a large number of through holes 7b at intervals, and these through holes 7b are interposed. This will keep new wires and the like. Further, one end of each of the plurality of through holes 7c formed at the center of the rear end portion (upward in the drawing) of the plate-like body 7a is connected to each of the front end eyes 6b of the two array yoke mounting brackets 6. Is connected to the other end of the appropriate connecting member 9 (see FIGS. 7 and 8).
[0011]
This construction method is performed at once between 5 and 6 steel towers, and an array yoke is attached to the balance yoke at the tip of each insulator device of the armature of each steel tower. The existing two wires at the lower part are drawn out with the two existing wires as a master line, and a new wire connected to the rear end of the existing wires is extended. And the new wires are held at the arrangement yokes of each of the middle towers as well as the steel towers at both ends, and these new wires are used as parent wires to support the existing two wires and replaced with new wires. Is.
[0012]
【The invention's effect】
In the re-stretching method of the invention of claim 1, since it is always performed with the two wires being stretched, there is no problem in the strength of the steel tower, and the work can be carried out as it is. Also, since the wire device is always tensioned and supported using the insulator device during the work of this construction method, the insulator device is removed to the ground at the time of the construction, and after the replacement, the armature of the steel tower is restored. There is no need to hang it on the wall. Further, among the four wires arranged vertically and horizontally, first, the space between the two lower wires is widened using the arrangement yoke, and in this state, these two wires are used as the parent wires. Since the other two wires are inverted and suspended, the other two wires are pulled out, and subsequently replaced with a new wire, there is no possibility that the wires are in contact with each other, and the wiring work is extremely easy. In other words, since the vertical relationship between the upper wire and the lower wire is changed to a horizontal relationship and then the wires are crossed, the entire wire replacement work can be simplified and performed quickly, improving work efficiency. . Moreover, in this construction method, since the electric wire between 5-6 steel towers can be exchanged at once, the insulator device installed for each steel tower is removed to the ground below 60-70 m, and is also raised up and attached. The shortening of the work time greatly contributes to shortening the construction period and reducing costs.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a third step of an embodiment of the present invention. Specifically, two new wire ends are fastened to an array yoke attached to a balance yoke, and the new wire is attached to the arrangement yoke. It shows the third step of pulling out two existing wires as a parent wire.
FIG. 2 is a perspective view showing a first step of the embodiment of the present invention, and specifically, an inversion type suspension wheel is attached to each of the upper and lower electric wires of the upper, lower, left and right existing electric wires. The first step is shown.
FIG. 3 is a perspective view showing a second step of the embodiment of the present invention. Specifically, the second step of removing the lower two wires from the balance yoke and transferring them to the aluminum gold wheel is shown. It is shown.
FIG. 4 is a cross-sectional explanatory view showing a state in which the lower electric wire is suspended from each reversing type suspension wheel with the upper electric wire as a main line in the embodiment of the present invention.
FIG. 5 is an explanatory cross-sectional view showing a state in which the lower new electric wires are fixed to both outer ends of the arrangement yoke and the distance between the new electric wires is widened in the embodiment of the present invention.
FIG. 6 shows a state in which a new electric wire fixed to both outer ends of the arrangement yoke in the embodiment of the present invention is used as a parent wire, and an existing electric wire at the top is supported by each reversing type suspension wheel. FIG.
FIG. 7 is a perspective view showing a state in which the arrangement yoke is attached to the tip of the balance yoke in the embodiment of the present invention.
FIG. 8 is a main part enlarged perspective view showing a state in which an arraying yoke is attached to the tip of the balance yoke in the embodiment of the present invention.
FIG. 9 is a plan view of an array yoke mounting bracket used in the embodiment of the present invention.
FIG. 10 is a plan view of an array yoke used in the embodiment of the present invention.
FIG. 11 is a perspective view showing a first step in a conventional construction method.
FIG. 12 is a perspective view showing a second step in the conventional construction method.
FIG. 13 is an explanatory cross-sectional view showing an arrangement state of four-strand electric wires to which the present invention and the conventional example are applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Armature of steel tower 2 Insulator device 3 Balance yoke 4 Electric wire 5 Reversing type suspension wheel 6 Arrangement yoke mounting bracket 7 Arrangement yoke 8 Aluminum metal wheel 9 Connection member

Claims (1)

These wires, in which one end of each of the four wires is secured to the balance yoke at the front end of the insulator device supported on each side of the armature of the steel tower with a space in the vertical and horizontal directions, are used by using the hanging metal construction method. In the construction method to replace with a new electric wire,
Attach a large number of reversible suspension cars over the entire length of the existing wire to be replaced on the side where power transmission was stopped, for every two upper and lower strips,
For each of the balance yokes at both ends of the existing electric wire to be replaced, an array yoke mounting bracket is fixed, and a substantially horizontal plate-shaped array yoke is attached to the tip of each of these array yoke mounting brackets.
Of the existing wires to be replaced, the lower two wires are removed from the balance yoke, joined to the other wire on the other side of the armband in a state where tension is released, and supported by the reversing type lifting wheel. Replace with electric wire,
Attach both ends of each of these new wires to the outer end of each of the above array yokes to widen the space between the two new wires, and in this state, tighten the existing two upper wires to be replaced. Loosen and reverse each suspension wheel and hang it on the new wire. After these two existing wires are supported by each suspension wheel and replaced with the new wire, the above-mentioned steps are performed in the reverse order. A method of replacing a transmission line, characterized by returning the balance yoke to its original position and fixing it.

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