JP2850207B2 - Hall prefabricated wiring method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to on-site work such as processing at a drum site in the construction of transmission lines, saving labor by omitting connection work and tightening work at an intermediate steel tower, reducing the weight of tools and shortening the construction period. It is related to the improvement of efficiency.

[0002]

2. Description of the Related Art At a factory, an installation position and a cutting position of a retaining clamp are marked on an electric wire in accordance with an electric wire length calculated based on an actually measured distance between electric wire support points (each span length) of each tower (without tension). ) A series of electric wires are drum-wound (cut to a standard length of drum standard) and carried into a drum place. After measuring the actual length at the drum site based on the result of the precise survey between the wire support points, the wire is cut by this, and the cut wire is compressed by the end clamps at both ends of the cut wire and compressed by the straight sleeve between the drum wound wires. After performing the (connection) work and connecting the split wire (pre-manufactured) with a length equivalent to 2 pieces of the retaining insulator device and both of the retaining clamps of the cut wire, a series of wires are extended. Therefore, it was necessary to perform temporary fixing work (mooring at Kamalong) every time the drawn wires were connected.
Insulators that support electric wires use tension type and suspension type. Drawers are used for drum type, and overhead wire wheels are used for wheel type (end clamp, straight sleeve impervious), and protectors are used. Exchanging work (relocation work for passing the wire pulling wire at the wire connection, temporarily suspending the extension)
It is carried out. After extending the wire, fix the wire at the tip to the insulator device of the engine-side anchoring tower, temporarily raise it with the overhead wire winch of the drum site, and tighten it at the middle split tension tower (separately to each steel tower bed). After installing the wire winch), determine the sag by observing the sag of the wire, hold the wire to the insulator, mount the wire, remove the split wire, form the jumper wire, attach
A series of operations such as attachment to the suspension insulator device are performed to complete all the steps of the overhead wire.

[0003]

In the conventional construction method, in addition to the measurement of the electric wire in a drum place, the clamp for retaining the wire by cutting, the compression work of the linear sleeve and the temporary fixing of the lead wire, the wire crossing work in the intermediate steel tower, etc. A great deal of time and effort is required for cable tightening work, a large number of overhead wire tools such as cable winches and wire draw protectors are required, a large drum area is required for on-site compression work, and in steep mountainous areas. There are problems such as damage (elongation, crushing) of the electric wires on the pulling wheel due to the pulling tension at the time of extending and tightening.

The present invention has been made in order to solve the above problems, and the contents thereof will be described below with reference to FIGS.
Have the original Dzu in FIG. 6 will be described.

[0005]

SUMMARY OF THE INVENTION In order to reduce a lot of time and labor required for various operations such as cutting an electric wire in a drum place, retaining a cut electric wire, compressing a straight sleeve, and temporarily fixing an extracted electric wire, As shown in FIG. 1, an electric wire drum 1 is obtained by cutting a wire at a factory according to a wire-corrected actual length for each span, and winding both ends of the prefabricated wire, which has been compression-molded with a retaining clamp, in the order of span. Carry in the drum site and install.

A split wire 6 having a length equivalent to two insulator devices
A prefabricated jumper wire 16 having a length calculated for each of the (split wire) and each of the towers (tensile type, semi-tensile type) is also manufactured in a factory in advance and carried into each site.

In order to speedily extend a series of prefabricated electric wires, a crawler wheel 11 and a flat extension wheel 2 shown in FIG.

Split wire 6 for interconnecting prefabricated electric wires
The swivel 17 is used as a connection fitting for the (split wire) to suppress twisting of the wire caused by rotation of the wire on the wheel.

In order to prevent damage (elongation and crushing) of the electric wire on the overhead wire wheel due to the tension of the wire, a crawler wheel 11 is used for the overhead wire wheel, and the prefabricated wires are separated from each other by split wires 6 (split wires). (The split wire or split wire is on the wheel).

A semi-insulating tensioning device 13 is attached to the insulator of the tower having a large pulling-down tension (vertical load) by the suspension type tower 10b.
To solve the problem of electric wire damage on the wheel.

The tightening work (attachment of the retaining clamp to the insulator device) at each of the intermediate steel towers 10 can be performed with a lightweight tool (lever block), and a tightening winch is not required.

[0012]

As shown in FIG. 1, a prefabricated electric wire drum 1 of several spans wound in the span of a drum separated by a partition plate 20 is transported from a factory to a drum place, and the drums are arranged in the order of drawing. After passing the first prefabricated electric wire 7a drawn from the electric wire drum 1 through the flat wire drawing wheel 2, the wire pulley of each tower in the wire drawing section drawn out from the tip end clamp 5a of the wire and the large overhead wire winch 3 of the engine place. After connecting the wire rope 8 installed above with the right-angle clevis link 18, the wire winch 3 is wound up and the wire drawing is started. The connection between the prefabricated electric wire 7b and the split wire 6 (split wire) is performed by a swivel 17 and a right-angle clevis link 18. Thereafter, the prefabricated electric wire 7 and the split wire 6 are unreeled from the drum in the order of the span.
A series of electric wires connected with the (split electric wires) are extended, and the terminal rope clamp 5b of the final prefabricated electric wire 7d forms a right angle with the hand rope 8a extended from the tight winch 4 of the drum field before passing through the flat extension wheel 2. Connect with clevis link 18. As shown in FIG. 2, the wire is extended until the final retaining clamp 5b passes through the crawler wheel 11 of the drum-side retaining tower 9,
After the passage, the final retaining clamp 5b is retained on the tension insulator 12 of the drum-side retaining tower 9 at the tension winch 4 of the drum place.

Again, a series of prefabricated electric wires 7 in the extending section are collectively tightened (temporarily raised) by the overhead wire winch 3 again, and the holding clamp 5a on the drum side of the crawler wheel 11 of each intermediate steel tower 10 is sequentially withdrawn from the drum side. After affixing to the insulator device 12 or the semi-strength insulator device 13 by a lever block and holding it, and attaching to the insulator device on one side of each intermediate tower, a series of prefabricated electric wires 7 is connected with the overhead wire winch 3. After tensioning again, the distal end clamp 5a of the prefabricated electric wire 7a is fixed to the tension insulator 12 of the engine-side anchored tower 9 and the engine-side insulator of each intermediate tower is fixed to the terminal clamp 5b. Then, the crawler wheel 11 is pulled down by the lever block 21, and the split wire 6 (split wire) and the crawler wheel 11 are removed.

The clamp of the prefabricated jumper wire 16 is attached to both sides of the socket (tension type, semi-tension type).
a, 5b, and the extension rope 8 and the hand rope 8
a is withdrawn, and all the steps of the overhead wire are completed.

[0015]

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a prefabricated electric wire 7a drawn out of an electric wire drum 1 arranged in a drum place is passed through a flat wire drawing wheel 2, and a tip end clamp 5a and a wire drawing rope 8 are connected by a right-angle clevis link 18. Thereafter, the wire is extended by a large overhead wire winch 3. Before the end termination clamp 5b of the electric wire 7a passes through the flat extension wheel 2, the extension wire is stopped, and the split wire 6 is inserted between the terminal end clamp 5a of the next prefabricated electric wire 7b.
(Split wire) with swivel 17 and right angle clevis link 19
After connecting using, extend the wire again. Thereafter, a series of prefabricated electric wires 7b to 7d are sequentially extended to form a final prefabricated electric wire 7d.
Stop before the end retaining clamp 5b passes through the flat extension wheel 2, and as shown in FIG. 2, the tail rope 8a and the terminal retaining clamp 5b drawn out from the tension winch 4 installed in the drum place. Is connected again with the right-angle clevis link 18 and then extended again. After the terminal retaining clamp 5b of the final prefabricated electric wire 7d passes through the crawler wheel 11 of the drum-side retaining tower 9, the overhead wire winch 3 is stopped, and The final retaining clamp 5b is retained by the tension insulator device 12 of the drum-side retaining tower 9 at the tension winch 4.

A series of prefabricated electric wires 7 at the overhead winch 3
The tension clamps 5 at the end of the tension insulators 12 and the semi-tensile insulators 13 on the drum side of each intermediate tower 10 are tensioned.
After the b is sequentially attached from the drum side, the tip end clamp 5a of the prefabricated electric wire 7a is fixed to the tension insulator 12 of the engine-side electric steel tower 9, and a series of prefabricated electric wires 7 in the extended section are pulled to the steel towers at both ends. The work of retaining each of the intermediate steel towers 10 on the drum-side insulator device (tensile type, semi-tensile type) is completed.

As shown in FIG. 3, each of the end clamps 5 is attached to the tension-resistant or semi-tensile insulator of the intermediate steel tower 10 on the engine side.
After attaching the wire to the suspension insulator 14 of the suspension tower 10b, the crawler wheel 11 is pulled down by the lever block 21, the split wire 6 (split wire) on the wheel is loosened, and the clamps 5a, 5b Twist wire 6 (split wire)
To remove.

As shown in FIG. 4, a prefabricated jumper wire 16 is mounted between the tension clamps of the intermediate steel towers and the tension clamps at the tip of the semi-tensile insulator device, and then the extension rope 8 is connected to the reel winder 15.
And the assembling rope 8a is removed to complete the entire operation of the prefabricated overhead line.

[0019]

According to the present invention, electric wires and wires are cut in advance at a factory to a required length for each span, and both ends are processed.
The prefabricated electric wire, the jumper wire, and the split wire (split wire) are transported to the site, the prefabricated wire and the split wire (split wire) are sequentially connected and extended, and then the prefabricated wires for each span are separated. After attaching to the insulator of the tower, complete the prefabricated joint method to complete the transmission line by attaching the prefabricated jumper wire,

The extra length (waste) of the electric wires is eliminated, and operations such as connecting a linear sleeve connecting the electric wires and adjusting the slackness for determining the slack of each electric wire become unnecessary.

By omitting the conventional work such as temporary fixing, cutting, and compression of the clamp at the drum site in the drum place and the tightening work in the intermediate sorting tension tower, a great labor saving, a shortening of the construction period, and a reduction in the weight of the tool are achieved. It becomes possible.

The work efficiency is improved by using a flat wire drawing wheel and a crawler wheel to facilitate and speed up the wire drawing work, reduce the work site, and shorten the waiting time at a drum site, an engine site, and an intermediate steel tower. I do.

A semi-tensile insulator (alternative to the conventional suspension insulator of a suspension tower) or a prefabricated electric wire attached to a tension insulator of a tension tower can be easily carried out by a lightweight tool even in bad weather. And

The swivel used at the connection between the prefabricated electric wire and the split wire (split wire) also suppresses twisting of the electric wire which occurs when the electric wire passes through the wheel.

Also, a split wire (split wire) is used for temporary lifting
Since the wire is located on the wheel, there is no occurrence of rotational elongation of the electric wire on the wheel or crushing due to tension. As described above, compared to the conventional prefabricated method, the ground work (mainly drum area) in the extension work and the on-boarding work (mainly the work in the cable line) in the cable line work are omitted. By shortening the work period, shortening the required tools, and reducing the weight by shortening the work time, it becomes possible to further increase the efficiency and cost of the overhead wire construction work.

[Brief description of the drawings]

FIG. 1 is a diagram showing a situation in which a prefabricated electric wire is arranged in a drum place and is being extended by an extension rope.

FIG. 2 is a view showing a situation after extension of all sections is completed.

FIG. 3 is a diagram showing a situation in which a crawler wheel is lowered and a split wire (split wire) is loosened after attaching a retention clamp to a retention insulator of a termination tower at both ends and an insulator device on a drum side of each intermediate tower.

[Fig. 4] After attaching the retaining clamp to the engine side insulator device of the intermediate steel tower, remove the split wire (split wire) on the wheel and install the prefabricated jumper wire and attach the electric wire to the suspension clamp. The figure below shows the removal of the line rope and the tail rope and the completion of the overhead wire construction.

FIGS. 5A to 5C are views showing the situation in which the pre-fabricated electric wire retention clamps on both sides of the crawler wheel are retained on the semi-strength insulator device.

FIG. 6A is a sectional view showing a structural view of a crawler wheel;
FIGS. B to D are views showing the situation in which the retention clamp passes over the crawler wheel.

[Explanation of Codes] Wire drum 2. Flat extension line car 3. Overhead winch 4. 4. Tension winch Retention clamp 5a. Tip retention clamp 5b. End termination clamp 6. 6. Split wire (split wire) Prefabricated wires 7a-d. 7. Prefabricated wires between each span Extension rope 8a. 8. Rope rope Termination tower 10. Intermediate tower 10a. Tensile steel tower 10b. Suspended steel tower 11. Crawler wheel 11a. Gear 11b. Caterpillar belt (with groove) 12. 12. tension insulator device 13. Semi-strength insulator device 14. Suspension insulator device Reel winder 16. Prefabricated jumper wire 17. Swivel 18. Right angle clevis link 19. Stay anchor 20. Partition board

Claims (1)

(57) [Claims] The present invention relates to a method for erection of electric wires (ground wires and power lines) of a transmission line, and comprises the following steps: (a) for each span calculated based on a distance between wire support points of each tower; After cutting the wire with the corrected actual length obtained by adding and subtracting the correction value such as the dimensions of the insulator device to hold the wire from the basic wire actual length, both ends were molded (compressed) using a compression type clamping clamp for each span. and prefabricated wire connection line for connecting the prefabricated wire cross, in the case of fitting (wires across the end <br/> without twisting the wire or similar wire anchor insulators apparatus duplicate considerable length eye processing, wire In the case of, a split wire or split wire with a wire clamp and a tension type and semi-tensile insulator at each tower are used for termination.
In allogeneic wire connecting the Pureha blanking electric wires because obtained, fabricating and Pureha <br/> Bed jumper compression socket for anchor clamp connected to both terminals had with the factory. (B) Electric wire drives separated by partition plates at the factory
Of prefabricated electric wires around the drum
Load the prefabricated electric wire drum into the drum place, and
Arrange the line drum. (C) prefabricated conductive lead has been span order from the wire drum
The fitting and swivel lines cross the split wires (split conductive line)
Using sequentially connected to a series of prefabricated wire a pre each tower has been
Connect to the extension rope installed on the overhead wire carriage. (D) insulator apparatus for supporting the prefabricated wire, using a tension type and a semi-tension type and pendent, rolled wire wheel and the catenary gold car, flat rolled wire vehicles which anchor clamp to easily pass < and a crawler type overhead wire wheel . (E) was extended line in the engine field large overhead line winch drum field緊線winches, after anchoring the end anchor clamps of the last prefabricated wire into insulator devices dead-end towers drawer side, series at large overhead line winch , The prefabricated electric wires of the intermediate lengths are collectively tightened to the insulator device of each tower, and the tip end clamp of the first prefabricated electric wire is clamped to the insulator device of the take-off tower. (F) When using a suspension type (straight tower with a small vertical load at the support point and a short diameter) as the insulator for the intermediate tower, attach a suspension clamp at the mark position of the electric wire. (G) After completing the installation of a series of prefabricated electric wires in the extension section to the entire insulator device, lower the overhead wire pulley of each intermediate tower and relax the split wire (split wire) on the wheel (in case of multi-conductor overhead wire, After adjusting the sag between the wires using an adjustment bracket) and removing it, attach the prefabricated jumper wires to the tension clamps of the tension-type and semi-tensile-type insulator devices, respectively, to complete the entire wire erection process. Complete. Of semi-tension type insulators
Hole, wherein like omitting緊線working with intermediate each tower by prefabricated and collectively rolled緊線(all sectors) Pre
Hub (pre-production) overhead wire (joint assembly) method.