JP2598948B2 - Tensile equipment replacement method and multi-conductor fixing bracket - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for replacing a tension insulator device for extending a multi-conductor wire to a tower arm and a multi-conductor fixing bracket used in this method.

(Prior art)

The conventional multi-conductor tension insulator device replacement method is performed in the following order.

(1). The conductor between the towers (the main line of the multi-conductor transmission line,
The operator removes all the spacers (referred to as "main line") attached to the tower (depending on the distance between the towers, but around 15 per phase and diameter), and removes the jumper wires from the conductor between the towers.

(2). Move the jumper line removed from the conductor to the tower.

(3). Attach a cam-long metal fitting to the lower conductor, install a plurality of ferrules between this cam-long metal fitting and the metal fittings on the line side of the tension insulator device, and operate the operating wire of this metal wheel to clamp the conductor to the tension insulator. Remove from device.

(4). Subsequently, a plate fixing wire attached to the tower arm is attached to the clamp, and the operating wire of the wheel is loosened to temporarily fix the conductor (the conductor to which the clamp is attached) to the tower arm. The wheel is generally removed after temporarily fixing the lower conductor and used for temporarily fixing the upper conductor.

(5). After that, a cam-long metal fitting is attached to the upper conductor, a plurality of wheels are installed between the cam-long metal fitting and the metal fittings on the line side of the tension insulator device, and the operating wire of the metal wheel is operated to withstand the clamp of the conductor. Remove from the tension insulator device.

(6). Subsequently, a temporary fixing wire attached to the tower arm is attached to the clamp, and the operating wire of the wheel is loosened to temporarily fix the conductor (the conductor to which the clamp is attached) to the tower arm. Further, by loosening the operating wire of the wheel, the tension insulator device is dropped from the tower arm and lowered to the ground.

(7). Raise the new tension insulator device near the tower arm and attach it to the tower arm.

(8). A plurality of wheels are installed between the cam-long metal fittings attached to the upper conductor and the line-side metal fittings of the tension insulator device, and the operating wires of the metal wheels are operated to connect the cam-long metal fittings to the line-side metal fittings. While narrowing the gap, remove the temporary fixing wire from the clamp of the conductor,
The conductor clamp is connected to the run-side fitting of the tension insulator device.

(9). Subsequently, the operating wire of the wheel is loosened, the tension of the upper conductor is transferred to the tension insulator device, and the wire for temporary fastening and the wheel are removed.

(Ten). After the upper conductor is tightened, a plurality of wheels are installed between the cam-long metal fittings attached to the lower conductor and the line-side metal fittings of the tension insulator device, and the operating wires of the metal wheels are operated to form the cam-long metal fittings. The temporary fixing wire is removed from the clamp of the conductor by reducing the distance between the conductor and the line-side fitting, and the clamp of the conductor is connected to the line-side fitting of the tension insulator device.

(11). Subsequently, the operating wire of the wheel is loosened, and the tension of the lower conductor is transferred to the tension insulator device.

(12). Thereafter, the cam-along fitting, the wheel and the like are removed from the conductor, the tension insulator device and the tower arm, and the jumper wire is returned to the original state.

(13). The jumper wire is attached to the conductor (main line), and the spacer is attached to the conductor (main line).

[Problems to be solved by the invention]

However, in the conventional method, (1). The operator must remove all the spacers attached to the conductor (main line) and attach them so that they will be in their original condition after replacement of the tension insulator device. (2). The jumper wire must be removed from the conductor (main line) and attached so that it will be in the original state after replacement of the tension insulator device. As a result, the work of replacing the tension insulator device takes time and labor. . In particular, since the replacement work of the tension insulator device involves a power outage, such a troublesome operation has a disadvantage that the power outage time is prolonged, which is not preferable for stable power supply.

An object of the present invention is to eliminate such inconvenience.

[Means for solving the problem]

In order to solve the above-mentioned problems, a tension insulator device replacement method according to the present invention is directed to a tension insulator device in which a multi-conductor power transmission line is stretched on a tower arm, A multi-conductor fixing bracket having a tightening line connecting portion and a wheel connecting portion is provided between the line grasping tool and the tension insulator device, and the multi-conductor fixing bracket and the conductor grasping tool are provided. The multi-conductor fixing metal fitting is connected with the multi-conductor fixing metal fitting and the steel tower arm by a second tightening rope via a retaining tool, and then the multi-wheel fixing metal connecting part of the multi-conductor fixing metal fitting. And each of the conductors is attached to the tension insulator device, and the operating wires wound around the wheel are operated to narrow the gap between the tension insulator device and the multi-conductor fixing bracket, thereby forming each of the conductors. Remove from the tension insulator device, and then After loosening the ear and tensioning the second tightening rope, the tension insulator device is removed from the tower arm, and a new tension insulator device is attached to the tower arm. Parts and the new tension insulator device are each fitted with a wheel, and the operating wire wound around the wheel is operated to narrow the space between the new tension insulator device and the multiconductor fixing bracket. The respective conductors are attached to the new tension insulator device, and then the retaining tool is loosened to transfer the tension of each conductor to the new tension insulator device.

Further, the multi-conductor fixing bracket used in the tension insulator device replacement method is such that a plate-like member is horizontally installed, and mounting plates are projected from upper and lower surfaces of the plate-like member, respectively. A connecting portion for a tension line and a wheel connecting portion are provided on the mounting plate, a conductor connecting portion substantially corresponding to the conductor arrangement of the multi-conductor power transmission line is provided on the mounting plate, and a hook is provided on an upper end portion of the mounting plate. It is a thing.

[Function of the invention]

In the tension insulator device replacement method according to the present invention configured as described above, since the multi-conductor fixing bracket is used, the multi-conductor arrangement is not disturbed, and the multi-conductor arrangement is attached to the conductor between the towers. The replacement of the tension insulator device can be performed without removing the spacer and the jumper wire.

[Explanation of Example]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 4, reference numeral 1 denotes a tower arm fixed to a tower (not shown), 2, 2, and 2 denote an insulator series attached to the tower arm 1, and 31 denotes an insulator series 2, 2, and 2. A large yoke attached to the tip, 32 is a vertical yoke fixed to the large yoke 31,
33 and 33 are horizontal yokes fixed to the vertical yoke 32. The horizontal yokes 33, 33 are connected to conductors (main lines) 4, 4,... Of a multiconductor transmission line via tension clamps 41, 41,. The insulator series 2, 2, 2, the large yoke 31, the vertical yoke 32, and the horizontal yokes 33, 33 constitute a tension insulator device of the present invention.

In the tension insulator device in which the multi-conductor power transmission line is stretched on the tower arm thus constructed, the replacement of the tension insulator device from the tower arm 1 is performed as follows.

(1). First, a multi-conductor fixture S is prepared. The multiconductor fixing bracket S will be described with reference to FIG. 4. Reference numeral 51 denotes a plate-like member. In this plate-shaped member 51, reference numeral 511 denotes a wheel-connecting through-hole (corresponding to the "wheel-connecting portion" of the present invention)
Formed at the center of the plate-like member 51, reference numerals 512, 512 denote through-holes for tightening connection (corresponding to the "connection portion for tightening" of the present invention), and are formed at both ends of the plate-like member 51. I have. The working wheel 61 is inserted into the through hole 511 for connecting the wheel and the wheel 6 to be described later.
Are connected and fixed, and the tightening wire connecting holes 512, 512 are tightening wires described later (corresponding to the "second tightening rope" of the present invention).
11,11 are connected and fixed. Reference numerals 52, 52 denote mounting plates, which are integrally formed at both ends of the plate-like member 51. This mounting plate 5
Reference numerals 2 and 52 project from the upper or lower surface of both ends of the plate-like member 51. 521, 521 are mounting holes, the mounting plates 52, 52
At the upper and lower ends. A tightening wire 421 (corresponding to a "first tightening rope" of the present invention) 421 is connected and fixed to the mounting hole 521. Reference numerals 522, 522 denote hooks, which are pivotally supported at the upper end of the mounting plate 52. The multi-conductor fixing bracket S is hooked to the upper conductors 4, 4 via the hooks 522, 522.

(2). The hooks 522, 522 of the multiconductor fixing bracket S are hooked on the upper conductors 4, 4 (see FIGS. 1 to 3).

(3). Each of the conductors 4,4,.
… Grasp with the tightening wire 421 of this cam-long bracket 42
Are connected and fixed to the mounting holes 521 of the multiconductor fixing bracket S.

(4). Thereafter, the connection hole 51 for the tension line of the multiconductor fixing bracket S is formed.
One end of a tightening wire (corresponding to the "second tightening rope" of the present invention) 11,11 is connected and fixed to 2,512, and the other end is connected and fixed to the tower arm 1. In the middle of the tightening ropes 11, 11, a retaining tool (for example, a lever block) 111, 111
Is interposed. The tension of the multiconductors 4, 4,... Is adjusted by the retaining tools 111, 111.

(5). Then, the wheel connecting hole 511 of the multiconductor fixing bracket S is formed.
And the wheels 6, 6 are attached to the vertical yoke 32, respectively. Then, the operating wire 61 is wound around these wheels 6,6. Then, the operating wire 61 is pulled to reduce the distance between the vertical yoke 32 and the multi-conductor fixing bracket S, and the tension clamps 41, 41,... Of the conductors 4, 4,. Remove.

(6). After that, the operating wire 61 is gently loosened to tighten the tightening ropes (second tightening ropes) 11,11.
The tension insulator device is removed from the tower arm 1. Then, a new tension insulator device is caught by appropriate means and attached to the tower arm 1.

(7). Then, the wheel connecting hole 511 of the multiconductor fixing bracket S is formed.
The wheel 6 is attached to the vertical yoke 32 and the working wire 61 is wound around the wheel 6. By pulling the operation wire 61 to reduce the distance between the vertical yoke 32 and the multi-conductor fixture S, the tension clamps 41, 41,... Of the conductors 4, 4,. Connect and fix to.

(8). Then, the operating wire 61 is loosened to remove the wheels 6, 6, and the like.

(9). Thereafter, the retaining tools 111, 111 are loosened, and the multiconductor fixing bracket S, the cam-long brackets 42, 42,... Are removed.

(Ten). Replace jumper wires (not shown).

FIG. 5 to FIG. 7 show another embodiment of the multiconductor fixing bracket S. In this multiconductor fixing bracket S, the plate-like member 51 is installed horizontally, and the mounting plates 52, 52 are welded to the upper and lower surfaces at both ends of the plate-like member 51.

〔The invention's effect〕

A tension insulator device replacement method according to the present invention is directed to a tension insulator device in which a multiconductor power transmission line is stretched on a tower arm, wherein each of the conductors of the multiconductor power transmission line is grasped by a wire grasping tool and the wire is grasped. A multi-conductor fixing bracket having a tightening wire connecting portion and a wheel connecting portion is provided between the tool and the tension insulator device, and the multi-conductor fixing metal and the wire grasping tool are connected by a first tightening rope. At the same time, the connecting part for tightening of the multi-conductor fixing bracket and the tower arm are connected by a second tightening rope via a retaining tool, and thereafter, to the wheel connecting part of the multi-conductor fixing bracket and the tension insulator device. Each of the conductors is detached from the tension insulator device by operating a working wire wound around each of the wheel wheels to narrow the space between the tension insulator device and the multiconductor fixing bracket. After that, loosen the operation wire and tighten the second tightening. After tensioning the rope, the tension insulator device is removed from the tower arm, and a new tension insulator device is attached to the tower arm. Thereafter, the wheel connecting portion of the multiconductor fixing bracket and the new tension insulator Each of the conductors is attached to the new wheel by attaching a wheel to the device and operating the operating wire wound around the wheel to narrow the space between the new tension insulator device and the multi-conductor fixing bracket. The tension insulator is attached to the tension insulator device, and then the tensioning tool is loosened to transfer the tension of each conductor to the new tension insulator device.

Therefore, in the tension insulator device replacement method according to the present invention, since the multi-conductor fixing bracket is used, the multi-conductor arrangement is not disturbed, and the spacer and the jumper wire attached to the conductor between the towers are not disturbed. The tension insulator device can be replaced without removing the tension insulator device. As a result, the time and labor for replacing the tension insulator device are improved, and the work efficiency and safety are improved. Further, since the time for the replacement work is shortened, the power outage time during the work is also shortened (for example, 30%), which can contribute to the stable supply of power.

Further, the multi-conductor fixing bracket used in the tension insulator device replacement method is such that a plate-like member is horizontally installed, and mounting plates are projected from upper and lower surfaces of the plate-like member, respectively. A connecting portion for a tension line and a wheel connecting portion are provided on the mounting plate, a conductor connecting portion substantially corresponding to the conductor arrangement of the multi-conductor power transmission line is provided on the mounting plate, and a hook is provided on an upper end portion of the mounting plate. Therefore, the tension insulator device replacement method can be easily implemented.

[Brief description of the drawings]

The drawings are explanatory views of a method of replacing a tension insulator device and a multi-conductor fixing bracket according to the present invention, and FIGS. 1 to 3 show steps of the method of replacing a tension insulator device. FIG. 2 is a perspective view of a state where a multi-conductor fixing bracket is installed, FIG. 2 is an enlarged partial view of FIG. 1, FIG. 3 is a perspective view of a state where a wheel is installed, and FIG. FIG. 5 is a perspective view, FIG. 5 to FIG. 7 show other multi-conductor fixing brackets, FIG. 5 is a front view, FIG. 6 is a plan view, and FIG. 7 is a left side view. S: Multi-conductor fixing bracket 1 ... Tower arm 11 ... Tightening wire (second tightening rope) 111 ... Tightening tool 2 ... Insulator chain (tensile insulator device) 31 ... Large yoke (tensile insulator device) ) 32 Vertical yoke (Tension insulator device) 33 Horizontal yoke (Tension insulator device) 4 Conductor (Main line) 42 Cam-Along bracket (Film grasping tool) 421 Tightening wire (First tightening) Rope) 51 Plate member 511 Wheel connection hole (wheel connection portion) 52 Mounting plate 522 Hook hook 512 Connection hole (connection portion for tension line) 6 Gold Car 61 …… Working wire

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshikazu Fukuzawa 3-244-2 Omoyama, Tenpaku-ku, Nagoya City, Aichi Prefecture (72) Inventor Tsurugin Exit 12 Osamu Miyanishi, Sasano, Ichinomiya City, Aichi Prefecture (72) Inventor Masahiko Suzuki 30 Okubayashi, Ono, Horai-cho, Minami-Shiraku-gun, Aichi Prefecture

Claims (2)

(57) [Claims] 1. A tension insulator device in which a multiconductor power transmission line is stretched on a tower arm, wherein each of the conductors of the multiconductor power transmission line is gripped by a wire gripping tool, and the wire gripping tool and the tension insulator device are provided. A multi-conductor fixing bracket having a tightening wire connecting portion and a wheel connecting portion is provided therebetween, and the multi-conductor fixing metal and the wire grasping tool are connected by a first tightening rope. A connecting wire connecting portion and a tower arm are connected by a second tightening rope via a retaining tool, and then a wheel is attached to the wheel connecting portion of the multiconductor fixing bracket and the tension insulator device, respectively. By operating the operating wire wound around the wheel, the distance between the tension insulator device and the multi-conductor fixing bracket is reduced to remove each of the conductors from the tension insulator device. After loosening and tightening the second tightening rope, The tension insulator device is removed from the tower arm, and a new tension insulator device is attached to the tower arm. Thereafter, a wheel is connected to the wheel connecting portion of the multiconductor fixing bracket and the new tension insulator device, respectively. Attach the conductors to the new tension insulator device by operating the working wire wound around the wheel to narrow the space between the new tension insulator device and the multi-conductor fixing bracket. Thereafter, the retaining tool is loosened and the tension of each conductor is transferred to the new tension insulator device. 2. A plate-like member is installed horizontally, and mounting plates are protruded from upper and lower surfaces of the plate-like member, respectively. A multi-conductor fixing bracket, wherein a conductor connecting portion substantially corresponding to a conductor arrangement of a multi-conductor transmission line is provided on the mounting plate, and a hook is provided on an upper end portion of the mounting plate.