JPH0817527B2 - Wire drawing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wire-drawing method for bridging a wire of an overhead power transmission line or the like between steel towers.

(Prior Art) FIG. 4 is a plan view for explaining the wire drawing method. In the figure, 1 is a steel tower, 1a is its arm, 2 is a glass connecting device attached to both sides of the arm 1a, 3 Is a line.

Then, in order to extend the line 3 between the steel towers 1, the line 3 is cut at a line length calculated in advance, and the line end portions before and after the cut line 3 are cut off. Attach a tension clamp (compression clamp) 4 and insert a steel tower arm between the tension resistant clamps.
Conventionally, a prefabricated overhead wire is used in which a wire (split wire) 5b having a length substantially equal to the total length L of the width l _{1 of} 1a and the length l ₂ of the glass connecting device 2 attached to both sides of the steel tower 1 is inserted. Has been done from. That is, the split wire 5b is provided in order to properly arrange the filament 3 between the steel towers 1.

In the case of the above-mentioned prefabricated overhead line, a so-called drum field 6 is provided at an appropriate distance from the steel tower 1, and a wire drawing vehicle 7 and a wire drawing vehicle 8 are installed in the drum field 6 and further a wire drawing vehicle. A filament drum 9 is provided to the rear of 7. A so-called engine field 10 is installed in front of the plurality of towers 1 and a wire winding device 11 is provided on the engine field 10, and a wire 12 connected to the wire 3 extended between the towers 1. Is wound and the wire 3 is extended.

The wire 3 comes out of the wire drum 9 and is wound several times around the wire extension wheel 7 in the front, and a tension clamp (compression clamp) 4 is attached to the tip thereof, and the tension clamp 4 is connected to the metal fitting. (When performing a tight line without using a cam along, a cam along metal fitting, not shown) is connected, and the wire connector to which the wire is attached is connected to the cam along metal fitting.

In the case of FIG. 4, the wire 12 is wound by the wire winding device 11 and the wire 3 is extended. When the required line length between the steel towers 1 to which the line 3 is attached is extended, the line 3 is cut in order to attach a tension clamp (compression clamp) 4 to its end portion.

FIG. 5 shows an example of a conventional wire drawing method. In this case, first, as shown in FIG. 5 (a), the wire 3 drawn from the wire drum is moved forward through the wire drawing wheel 7. Then, the wire 3 is cut between the wire drawing wheel 7 and the wire drum 9 behind it, as shown in FIG. 5 (b). In this case, the tension of the line 3 is not applied to the rear of the line drawing vehicle 7. As shown in FIG. 5 (b), the wire drawing clamps 13 are compressed and fixed to the wire end portions before and after the cut wire 3, respectively. (Because the tension clamp 4 cannot pass through the wire extension wheel 7, the split wire 5b is connected between the wire extension clamps 13 and then the wire winding device 11 shown in FIG.
And split wire 5b. After this wire drawing is continued and an appropriate amount of wire drawing is performed, as shown in FIG. 5 (c), a cam along 14a of the wire temporary fixing tool 14 to be described later is attached to the wire 3, and the wire of the wire temporary fixing tool 14 is attached. Transfer the tension of filament 3 to 15. Then, the wire 3 is cut near the base of the wire clamp 13, the wire clamp 13 is cut off, and the tension clamp (compression clamp) 4 is attached to the wire 3 as shown in FIG. 5 (d). After that, attach the connecting metal fittings (or the metal fittings for cam tightening if you do not use the cam along) 16 and the wire connector 17 to the tension-resistant clamp (compression clamp) 4, and connect the split wire 5b to the wire connector 17. , And loosen the winch of the temporary wire fixing tool 14 and extend the wire again. Then, the wire extension is continued, and when the rear end of the split wire 5b advances toward the front of the wire drawing vehicle 7, the split wire 5b
The wire strip 3 is cut near the root of the wire extension clamp 13 attached to the rear end side of the wire extension clamp 13, and the wire extension clamp 13 is cut off. In this case, since the temporary wire fixing tool 14 is still attached, tension may be applied to the temporary wire fixing tool 14 in advance. Subsequently, as shown in FIG. 5 (e), a tension clamp (compression clamp) 4 is attached to the wire 3. After attaching the tension resistant clamp (compression clamp) 4, the cam along metal fitting 16 and the wire connector 17 are attached to the tension resistant clamp (compression clamp) 4, and the split wire 5b is connected to the wire connector 17. This connects the wire 3 to the front and back of the split wire 5b. Next, the line temporary fixing tool 14
Is loosened and the tension applied to the wire 15 attached to the wire 3 by the cam along 14a is transferred to the wire 3 and the split wire 5b. Then, after the tension moves to the line 3 and the split wire 5b, the cam along 14 attached to the line 3
Remove a and wire 15. (See FIG. 5 (e)). With this conventional wire drawing method, the cam along 14
Since a extends over a considerable distance (for example, about 40 m) from the drum field 6 where there are line-cars 7, 8 etc., it naturally increases its altitude, and is located at a height of about 15 to 20 m, for example. ing. As a result, for example, a method of providing a scaffold at a position supposed to remove the cam along 14a or the like, or a method of removing the cam along 14a or the like by riding a basket attached to the tip of the arm of a tow truck are used.

FIG. 6 shows another example of the conventional wire drawing method.
In this case, first, as shown in FIG. 6A, the line 3 is temporarily fixed by the line temporary fixing tool 14 in front of the line drawing vehicle 7. Subsequently, the filament 3 is cut as shown in FIG. 6 (b),
A tension clamp 4 is attached to the end of the line before and after the cut line 3.
Attach the connecting metal fittings (if there is a tight cable without using the cam along) 16 and the wire connector 17 to both the tension resistant clamps (compression clamps) 4, and split the wire 5b between both wire connectors 17. Install. This connects the wire 3 to the front and back of the split wire 5b. Subsequently, as shown in FIG. 6 (c), the wire temporary fixing tool 14 is loosened, and the tension applied to the wire 15 attached to the wire 3 via the cam along 14a is applied to the wire 3.
And split wire 5b. Then, after the tension moves to the wire 3 and the split wire 5b, the cam along 14a and the wire 15 attached to the wire 3 are removed.

In this conventional wire drawing method, when the wire temporary fixing tool 14 is removed from the wire 3, the position of the cam along 14a is
Since it is located at a considerable distance (for example, about 40 m) from the drum field 6 such as 7, 8 or the like, the altitude naturally increases and is located at a height of 15 to 20 m, for example. As a result, according to the same method as the conventional wire-drawing method described above, a scaffold is provided at a position where the cam along 14a and the like are supposed to be removed, and the work is removed, or it is attached to the tip of the arm of a tow truck. I was working on the cage to remove it.

(Problems to be solved by the invention) However, in the former case of the above-described conventional wire drawing method, the work of compressing the wire drawing clamp 13, the work of replacing the split wire 5b, the wire drawing clamp 13 and the tension clamp. (Compression clamp) 4 replacement work and cam along 14a
The work to set up a scaffold for removing the wire 15 and the wire 15 is complicated, and the climb along the scaffold, or the cam along 14a and the wire attached to the wire 3 by riding on the basket attached to the tip of the arm of the tow truck. There is a problem that the work for removing 15 is complicated and dangerous. In the case of the latter of the conventional wire drawing methods, the cam along 14
The work of providing a scaffold to remove a and the wire 15 is complicated, and ascending to that scaffold, or riding the cage attached to the tip of the arm of the tow truck and attaching the cam along 14a to the line 3 There is a problem that the work of removing the wire 15 is complicated and dangerous. Furthermore, in this case, loosen the temporary wire fixing tool 14 and cam along the wire 3.
When the tension applied to the wire 15 attached by 14a is transferred to the wire 3 and the split wire 5b, the tension-free part is long, so the tension is transferred to the wire 3 and the split wire 5b immediately before the tension is completely transferred. There is a problem that the wire 5b jumps up greatly, which causes a danger.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and it is possible to provide a line that is temporarily fixed with line temporary fixing tools in front of the line drawing vehicle. The process of cutting and attaching the tension resistant clamps to the wire end portions of the cut wire, the tension clamps attached to the wire being extended, the main split wire and the auxiliary split wire, respectively. A step of connecting between the main split wire ends of the split wire divided in two, a step of detachably connecting and supporting the rear end of the main split wire and a supporting wire, and a wire being drawn. After applying tension to the wire and removing the temporary wire fixing tools, the main split wire is drawn by a wire winding device, and the rear end of the main split wire comes out in front of the wire drawing vehicle. , The tension clamp attached to the end of the unstretched wire and the rear end of the auxiliary split wire Is detachably connected via connecting parts, and after connecting them,
The wire-drawing method is characterized in that the support wire is loosened to apply tension to the unstretched wire, and then the support wire is removed.

In addition, a process of cutting the line temporarily fixed by the line temporary fixing tools in front of the line drawing vehicle and attaching a tension clamp to each of the line end portions of the cut line, Between the tension clamp attached to the wire being extended and the main split wire end of the split wire that is split into two parts, the main split wire and the sub split wire, which are wound around the wire drawing vehicle. After connecting the wire, tension is applied to the wire being extended and the wire temporary fixing tools are removed, and the main split wire and the support wire are detachably connected behind the wire drawing vehicle. And the step of supporting, and the main split wire is drawn by the wire winding device, and after the rear end of the main split wire comes out in front of the wire drawing vehicle, it is attached to the undrawn wire end portion. The tension clamp and the rear end of the sub split wire are connected through connecting parts, and After coupling of the support by loosening the wire tension is added to the non-rolled wire filament, then, it is characterized in extending line method and a step of removing said supporting wire.

(Operation) Since the present invention is as described above, according to the present invention,
The cam-along attached to the filament and the wire are removed after the tension clamp (compression clamp) attached to the filament and the end of the split wire are connected and supported. That is, if it is possible to move the tension to the wire being stretched, the tension can be moved to the wire being stretched by a method such as loosening the wire temporary fixing tool, and at that stage, the cam along and the wire can be moved. According to the present invention, since the cam along of the linear fixing tools does not come out to the front of the line drawing vehicle so much,
Naturally, its altitude does not increase as in the past. Therefore, according to the method of the present invention, it is possible to work in the drum field.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. In the figure, the same reference numerals as those used in the previous description denote the same elements.

FIG. 1 shows a first embodiment of the present invention. In this case, first, as shown in FIG. 1 (a), the filament 3 is cut in front of the filament drawing wheel 7.

At that time, before cutting, the wire 3 is temporarily fixed by a cam along 14a of a wire temporary fixing tool 14 including a cam along 14a, a wire 15, a winding machine (for example, a lever block) (not shown), and the like.

Then, a tension clamp (compression clamp) 4 is attached to the end portion of the cut wire 3 and a connecting metal fitting (when tightening the wire without using the cam along is connected to the compression clamp 4 attached to the wire 3). , Cam-alongless metal fitting 16) and wire connector to the cam-alongless metal fitting 16
17 is attached, and the end of the main split wire 5 wound around the wire drawing wheel 8 is connected to the wire connector 17.

Then, after connecting them, as shown in FIG. 1 (b), the winding machine (for example, a lever block) of the wire temporary fixing tool 14 is loosened, or the wire drawing wheel 8 is reversed to extend the wire. Tension is applied to the wire 3 in the wire, and then the wire temporary fixing tool 14 is removed as shown in FIG. 1 (c).

A rear wire connector 17 is attached to the rear end of the main split wire 5, and a supporting wire 18 is attached to the rear wire connector 17. In addition, this support wire 18
It is also possible to use the main split wire 5 used for the next steel tower. Then, they are connected behind the wire drawing wheel 8 and pass through the wire drawing wheel 8 in the process of drawing the wire.
Then, the wire winding device 11 (see FIG. 4) is operated to extend the main split wire 5. The main split wire 5 is extended to the front of the wire drawing vehicle 8 Rear wire connector 17
(See FIG. 1 (c)), the compression clamp 4 at the end of the unstretched wire and the rear end of the main split wire 5 are
As shown in FIG. 3C, the connection parts A are connected. As shown in FIG. 1 (c), the connecting part A comprises a cam alongside metal fitting 16, a wire connector 17, and a split wire connector 17 from the compression clamp 4 side, as shown in FIG. 1 (d). Is attached to the mounting ring 5a at the end of the main split wire, and as shown in FIG. 1 (e), the unstretched wire strip 3 is extended through the wire strip 3, the main split wire 5, and the connecting parts A. And are connected. That is, in this case, this wire connector 17
Is attached to the support wire 18 next to the wire connector 17. (See FIG. 1 (d)) If the rear wire connector 17 that connects the rear end of the main split wire 5 and the support wire 18 is the wire-drawing metal fitting 17A shown in FIG. Wire connector 1
Reference numeral 7 may be a sub-connecting metal fitting 17B of the wire-drawing metal fitting 17A. FIG. 3 (a) shows a state before the wire-drawing metal fitting 17A and the sub-coupling metal fitting 17B are connected, and FIG. 1 (b) shows a connected state. After the main split wire 5 and the sub split wire 19 are connected, the wire wound around the wire drawing wheel 8 is loosened, and then the undrawn wire strip 3 is formed as shown in FIG. 1 (e). Apply tension. After that, the supporting wire 18 and the wire connector 17 shown in FIG. 1 (d) are removed to obtain the state shown in FIG. 1 (e).

2 shows a second embodiment of the wire drawing method of the present invention. In this case, first, as shown in FIG. 2 (a), the wire temporary fixing tool 14 is provided in front of the wire drawing vehicle 7. Cut the wire 3 temporarily fastened with, attach the tension clamps 4 to the ends of the wire before and after the cut wire 3, and attach the tension clamps to the wire 3 in the extension. 4 and the front end of the main split wire 5 are connected, and the rear end of the main split wire 5 and the end of the support wire 18 protruding to the front of the wire drawing vehicle 8 are connected,
Then, loosen the wire temporary fixing tool 14 or reverse the wire drawing wheel 8 and, as shown in FIG. 2 (b), the wire 3, the main split wire 5, and the supporting wire during the wire drawing. Apply tension to 18. That is, when the wire temporary fixing tool 14 is loosened and tension is applied to the wire 3 or the like in the wire drawing, the wire drawing wheel 8 is reversed to move the supporting wire 18 and the main split wire 5 to the wire drawing wheel 8 After winding, the wire temporary fixing tool 14 is removed, and then the wire drawing wheel 8 is normally rotated to feed the main split wire 5 and the support wire 18. Then, after the rear end of the main split wire 5 and the front end of the support wire 18 come out to the front of the wire drawing vehicle 8, (see FIG. 2 (c)), the compression clamp 4 and the main split of the unstretched wire end portion are formed. The rear end of the wire 5 is connected via the connecting part A. The connecting part A comprises a cam alongside metal fitting 16, a wire connector 17, a split wire 19, and a wire connector 17 from the compression clamp 4 side. As shown in FIG. 2 (d), the main split wire end is attached. By connecting the connector 17 connected to the auxiliary split wire 19 to the ring 5a, the wire strip 3, the main split wire 5, the connecting part A, and the unstretched wire strip 3 in the wire extension are connected. (See FIG. 2 (e)) In this case, the wire connector 17 is attached to the support wire 18 adjacent to the wire connector 17. (See FIG. 2 (d)), followed by wire drawing car 8
The wire 18 wound around is loosened to apply tension to the unstretched wire strip 3, and then the supporting wire 18 and the wire connector 17 are removed. (See FIG. 2 (e)) (Effect of the invention) In the method of the present invention, the cam-along 14a and the wire 15 attached to the wire 3 are removed by the tension clamp (compression) attached to the wire 3. This is after the connection between the clamp) 4 and the end of the split wire 5. That is, if it is possible to move the tension to the line 3 being drawn, the line temporary fixing tool
The tension can be transferred to the wire 3 being extended by loosening the wire 14, and the cam along 14a and the wire 15 can be removed at that stage. Therefore, the cam along 14a of the wire temporary fixing tool 14 is
It does not come out so much in front of the line-cars 7, 8 and naturally its altitude does not rise as it did in the past. Therefore, according to the construction method of the present invention, it is possible to work in the drum field, and particularly, the work of providing a scaffold for removing the wire temporary fixing tool 14 is simplified.
In addition, dangerous work such as climbing to the scaffold or removing the cam-along and the wire attached to the line by riding on the basket attached to the tip of the arm of the tow truck is also improved. Further, according to the method of the present invention, the wire drawing clamp
Since the work of compressing 13, the work of replacing the split wire 5, etc., and the work of replacing the wire extension clamp 13 and the tension clamp (compression clamp) 4 are eliminated, the work efficiency is improved accordingly.

Further, according to the method of the present invention, the cam along 14a of the temporary wire fixing tool 14 can reduce the amount of movement of the wire suspension wheels 7 and 8 in the forward direction, so that it is conventionally used as a hoisting machine. Since a simple tool such as a lever block can be used instead of the winch, the work can be facilitated.

[Brief description of drawings]

1 (a) to (e) are explanatory views of a first embodiment of the wire drawing method of the present invention, and FIGS. 2 (a) to (e) are explanatory views of a second embodiment of the wire drawing method of the present invention. FIGS. 3 (a) and 3 (b) are explanatory views when a metal fitting for wire drawing suitable for the wire drawing method of the present invention is used, FIG. 4 is a plan view for explaining a prefabricated overhead wire, and FIGS. 5 (a) to (e). ) Is an explanatory view showing an example of a conventional wire drawing method, and FIGS. 6A to 6C are explanatory views showing another example of the conventional wire drawing method. 1 ... Tower, 1a ... Arm 2 ... Insulator connection device, 3 ... Line 4 ... Tension clamp (compression clamp) 5 ... Split wire, 6 ... Drum field 7 ... Line drawing car , 8 ...... Wire drawing car 9 ...... Wire drum, 10 ...... Engine field 11 ...... Wire winding device, 12 ...... Wire 13 ...... Wire drawing clamp, A ...... Connection part 14 ...... Wire temporary Stopper, 14a …… Cam along 15 …… Wire, 16 …… Coupling metal 17 …… Wire connector, 17A …… Wire extension metal fitting 17B …… Sub coupling metal, 18 …… Supporting wire 19 …… Sub split wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masashi Haraguchi 10 at 38 Rokudoku, Miyu-cho, Toyokawa City, Aichi Prefecture (72) Inventor Yukio Otsu 1 at 72, birth birth number, Bisai City, Aichi Prefecture (72) Invention Person Haseyama Yoshikazu 831-1031, Kikugawa-cho, Ogasa-gun, Shizuoka Prefecture (72) Inventor Masahiko Suzuki 1-56, Okubayashi, Ohno, Horai-cho, Minami Shitara-gun, Aichi (56) References JP 58-212307 (JP, JP, 212-307) A)

Claims (2)

[Claims] [Claim 1] A step of cutting a line temporarily fixed by a line temporary fixing tool in front of a line drawing vehicle and attaching a tension clamp to each of the line ends of the cut line. And a tension-resistant clamp attached to the wire in the extending wire, and a step of connecting between the main split wire end of the split wire divided into two main split wires and sub split wires, A step of detachably connecting and supporting the rear end of the main split wire and the support wire, and applying tension to the wire in the wire extension,
After the step of removing the wire temporary fixing tools, the main split wire is extended by the wire winding device, and the rear end of the main split wire appears in front of the wire drawing vehicle, and then the non-stretched wire end The tension clamp attached to the section and the rear end of the sub split wire are detachably connected via connecting parts, and after the connection, the support wire is loosened to apply tension to the unstretched wire. Then, a wire-drawing method including the step of removing the support wire. 2. A step of cutting a line temporarily fixed by a line temporary fixing tool in front of the line drawing vehicle and attaching a tension clamp to each of the line ends of the cut line. And a tension clamp attached to the wire in the wire, and the main split wire end of the split wire divided into a main split wire and a sub split wire wound around the wire drawing vehicle. After connecting between the wire and the wire, tension is applied to the wire being drawn and the wire temporary fixing tools are removed, and the main split wire and the support wire are attached and detached at the rear of the wire drawing vehicle. The process of freely connecting and supporting, the main split wire is drawn by the wire winding device, and after the rear end of the main split wire comes out to the front of the wire drawing vehicle, the undrawn wire ends. While connecting the attached tension clamp and the rear end of the sub split wire through connecting parts, After their coupling, the tension added by loosening the supporting wire to the non-rolled wire filament, then extending line method and a step of removing the support wire.