JPS6231312A - Method and apparatus for reducing power failure range duringwork - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method and apparatus for reducing the range of work power outages to prevent collateral power outages in areas other than the construction zone during overhead line work and the like.

``Prior art'' Conventionally, in the event of a power outage due to overhead line construction, etc., the switch or the stop section of the distribution line is cut off or disconnected using a utility pole equipped with a switch or stop section of the distribution line, and the power is interrupted between each. However, due to high costs and other reasons, such switches or picture clamps are not installed on each utility pole, and the above power outage will also require long power outages in spans outside the construction zone. Collateral power outages occur frequently,
This has major drawbacks, such as increased labor costs required for switch switching operations to reduce the range of power outages.

"Problem to be solved by the invention" A switch for reducing the power outage area in the event of a construction power outage without causing a long power outage to customers outside the construction zone due to overhead line construction etc. The purpose is to eliminate the need for complicated switching operations.

``Means to solve the problem'' Known chucks are attached to the power distribution lines on both sides of the construction zone at appropriate intervals, and between the chucks at appropriate intervals, a rotatable main shaft installed in the main body is used to attach the A wire tensioner equipped with an expandable main shaft cover is connected, and two wire supports for holding the distribution line are inserted into the main body of the wire tensioner so as to be slidable, rotatable, and fixed. , the distance between the respective chucks is reduced with a rod-type wire tensioner, the distribution line between the chucks is loosened, the distribution line is held by the two wire supports, and the distribution line is stretched between the wire supports. A connecting clamp is installed at each chucked end of the distribution line, and the bypass cable and working ground are connected as appropriate.

``Effect'' Even if the utility pole in the work area is not equipped with a switch or a drawing stop for the distribution line, the distribution line can be cut while the distribution line remains under tension, and by connecting the bypass cable appropriately, By switching the switch to reduce the power outage range, it is possible to cut power only to the work area.

``Example'' Reference will now be made in detail to the accompanying drawings that illustrate an example of implementing the present invention.

1 is a rod-type wire tensioner, 2 is the main body of the wire tensioner L, and a cover 4 made of FRP is protruded from one side of the main body case 3, and a screw 5 is attached.
, 5.

Reference numeral 6 denotes a main shaft that passes through a shaft hole 7 drilled on the negative side of the main body case 3 and is installed from the main case 3 to the tip of the cover 4. A bevel gear 9 is fixed between the main shaft 6 and the negative side of the cover 4 through a thrust bearing 8, and a trapezoidal screw 10 is bored along the entire length of the main shaft 6 on the cover 4 side. 11 is a bevel gear that meshes with the bevel gear 9, and a main shaft 6 is provided in front of the main body case 3.
The drive shaft 12 is fixed to the tip of a drive shaft 12 that extends through the drive shaft perpendicularly to the drive shaft 12. 13 is a hexagonal hole bored in the axial direction from the base end of the drive shaft 12, and the tip of the handle shaft 15 of the known ratchet handle 14 is formed into a hexagonal rod 15a, so that the ratchet handle 14 can be freely inserted into and removed from the liquid hole 13. It is something. Reference numeral 16 denotes a main shaft cover made of FRP that can be inserted into and removed from the cover 4 of the main body 2, and has a through hole 1 through which the main shaft 6 is inserted over the entire length in the axial direction.
It has a cylindrical shape with holes 6a. Reference numeral 17 denotes a cylindrical main bearing with one end closed, the outer diameter of which is fitted into the cover 4 of the main body 2 so that it can slide thereon, and the inner diameter of which is shaped so that the main shaft cover 16 can be inserted and fitted therein. A trapezoidal female screw 18 that engages with the trapezoidal screw 10 of the main shaft 6 is bored in the closed end, and the base end of the main shaft cover 16 is inserted into the open end to fix the main shaft cover 16 and the main bearing 17. It is fixed with threads 19.19. Reference numeral 20 denotes a key, which is made of ABS resin, and has a key groove 21 bored across the main shaft bearing 17 from the base end to the distal end in the axial direction of the main shaft cover 16.
It is inserted and fixed by gluing, etc. 22 is a cover receiver made of Duracon (trade name of synthetic resin made from polyacetal copolymer), which has a through hole 22a into which the spindle cover 16 is inserted, and which fits into the tip of the cover 4. , fix to cover 4 with screws 23 and 23,
A key groove 24 into which the key 20 fits is formed in the through hole 22a, and the main shaft cover 16 can be extended and contracted from the cover 4 of the main body 2 without rotating even when the main shaft 6 rotates. Reference numerals 25 and 25 are electrical wire supports made by Duracon, and each is attached to the outer circumference of the cover 4 of the main body 2 so as to be able to slide and rotate freely using a ring 26.
The ring 2 is fitted with a strut 29 which is equipped with a bifurcated wire receiving part 27 at the tip so that it can be rotated and fixed with a bolt 28.
6. Tightening is done by screw hole 30 provided through the circumferential surface.
When holding the wire, use the forked wire receiving portion 27 at the tip.
The electric wire is inserted into the receiving part 27, and the tip of the lock bin 31 installed on one side 27a of the two-pronged open part of the receiving part 27 is screwed into the other side 27b of the receiving part 27. The open portion of the lock pin 31 is closed and held by the lock pin 31. Reference numeral 32 designates a spindle side cap, which is inserted into the tip of the spindle cover 16 and fixed with set screws 33. A rotating part 34 is rotatably fixed with a nut 35.

Reference numeral 36 designates a rotating section similar to that described above, which has a through hole 3a formed in the end of the main body case 3, and is rotatably fixed with a nut 37 in the same manner as described above.

38 is a cover plate that closes the back side of the main body case 3. 39
This is a known chuck, which is used to peel off and attach the coating from any part of the electric wire, and has a spring-loaded hook 40 rotatably fixed on the minus side.

Reference numeral 41 denotes ring lobes, which are connected to the rotating parts 34 at both ends of the rod-type cotton tensioner 1.
36 and 42 and 43 respectively. 4
Reference numeral 4 denotes a known connection clamp, which is attached to an electric wire in the same way as the chuck 39, and is used to connect a bypass cable or a work ground.

The present invention has the above-mentioned configuration. When using this, the coating of the distribution wire 45 is peeled off over an appropriate width at intervals slightly longer than the length of the rod-type wire tensioner l when it is extended, and the coating is removed using a known chuck. 3
9.39 are attached so that the respective spring-loaded hooks 40.40 face each other, and the rotating parts 34.36 at both ends of the rod-type wire tensioner 1 are attached.
The ring rope 41.4'l attached to the spring hook 4
The hook is opened and hung against a spring of 0.40, the bar wire tensioner 1 is suspended between the chucks 39 and 39, and the ratchet handle is attached to the hexagonal hole 13 of the drive shaft I2 on the front of the main body case 3. When the hexagonal rod 16a at the tip of the handle shaft 15 of 14 is inserted and the ratchet handle 14 is rotated clockwise, the drive shaft 12
Rotation is transmitted to the bevel gear 9 via the bevel gear 11 fixed to the
The main shaft 6 to which the bevel gear 9 is fixed rotates in the right direction, and the main shaft cover 16 is moved toward the proximal end inside the cover 4 of the main body 2 by the main bearing 17, and the rod-type wire tensioner 1 is contracted to be attached to the chuck. 39° 39 to loosen the distribution wire 45a between the chucks 39 and 39, and attach the wire support 25.25 to the cover 4 of the main body 2 by sliding and rotating the ring 26.26 and removing the forked wire. Lock bin 31.31 of receiving part 27.27
on the other side 27b.

27b and open it, insert the electric wire 45a into the two-pronged opening, and insert the tip of the lock pin 31.31 into the side surface 27b.
, 27b to close it and hold the electric wire 45a,
By rotating the strut 29.29, the installation is done with ring 2.
6. Screw into the screw hole 30.30 of 26, fix it to the cover 4, and cut the distribution line 45a at the center between the wire supports 25.25 while maintaining the tension of the distribution line 45, and then cut each In order to insert the end cap 46 into the end and secure the separation between the cut ends, loosen the strut 29 of one wire support 25, rotate the ring 26 by 180 degrees as shown in FIG. 6, and reinstall it. When installing the support column 29, the wire support 25 is fixed by tightening the ring 26. At this time, the wire support 25 is
This is to prevent the ratchet handle 14 from getting in the way of such operations by pulling out the ratchet handle 14 from the hexagon 313 on the front of the main body case 3 when rotating the wire by 0° or restoring the protection of the wire after cutting the wire. be. Perform the above operations on each electric wire on both sides of the construction zone, and attach bypass cables to the outer connection clamps 44 and 44 on both sides of the construction zone, and work grounding to the inner connection clamps 44 and 44 as appropriate. , it is possible to cut power only to the construction zone without having to switch switches to reduce the power outage area.

In addition, when connecting the cut portion of the power distribution line 45a, the end cap 46.4 is placed in a separated state as shown in FIG.
6, peel off the coating on the cut end of the distribution wire 45a, insert a known sleeve into the cut end of one of the distribution wires, and attach the other cut end by rotating it by 180'' with the ring 26. The other end of the sleeve is inserted into the cut end, and the sleeve is compressed and connected by caulking to each cut end.

Furthermore, when removing the rod-type wire tensioner 1, each wire support 2
5, pull out the lock pin 31 on one side 27a of the bifurcated wire receiving part 27 from the other side 27b, perform the operation opposite to the above, release the holding of the distribution wire 45a by the wire support 25.25, and then remove the lock pin 31 from the other side 27b. Insert the handle shaft 15 of the ratchet handle 14 into the hexagonal hole 13 on the front of the main body case 3, switch the known pawl 14a of the handle 14 in the direction of arrow 47 in FIG. 4, rotate the handle 14 to the left, and reverse the above. Rod type wire tensioner 1
is extended to eliminate the slack in the distribution line 45a between the chucks 39 and 39, and the rod-shaped wire tensioner l is suspended between the chucks 39 and 39 by the ring ropes 41 and 41, and the ring lobe 41
゜41 to chuck 39.39 spring hook 40゜4
0, and then the chuck 39, 39 and the connection clamp 44, 44 are removed and withdrawn.

"Effects of the Invention" As described above, the present invention is capable of shutting off power only in the construction zone, so there is no need for customers outside the construction zone to be affected by the power outage for a long period of time, unlike in the past. Furthermore, there is no need to switch switches to reduce the range of power outages, which was required in the past, and labor costs can be reduced significantly. Furthermore, by using the device of the present invention, it is possible to cut the distribution line between the wire supports 25 and 25, and the cut end of the distribution line does not snap off, making it safe and allowing one of the wire supports 25 to be cut after cutting. 18
By rotating by 0°, a sufficient distance of 20 cm or more can be secured between the cut ends. In addition, the work from attaching the chuck 39 to cutting and connecting the distribution line 45a can be done by one person, and the main body case 3, main shaft 6, and bevel gear 9 can be
, 11, etc. are made of synthetic resin such as FRP and Duracon, so they are lightweight and easy to handle, making work more efficient. In addition, by using the device of the present invention, in addition to cutting the distribution line 45 near utility poles using scaffolding equipment, it is possible to maintain tension in the center of the span etc. using an aerial work vehicle. This makes it possible to disconnect the power distribution line 45, making it possible to cope with any construction environment.

[Brief explanation of the drawing]

The attached drawings show an example of the implementation of the present invention, and FIG. 1 is a side view of the main part during use, FIG. Figure 2 is a cross-sectional view taken along the line A-A, Figure 4 is a cross-sectional view taken along the line B-B, Figure 5 is a front view of the wire support, and Figure 6 is a side view of the main parts showing the separated state after cutting the distribution line. be. 1.-rod-type wire tensioner, 2-main body, 3-1 main body case, 3a
-Through hole, 4-cover, 5-screw, 6... main shaft, 7-
Shaft hole, 8-Thrust bearing, 9...Bevel gear, 1
〇One trapezoidal screw, 11--Bevel gear, 12-Drive shaft, 13
・-・Hexagonal hole, 14-・Ratchet handle, 14a-
Claw, 15...-handle shaft, 15a...-hexagonal bar, 16
---Main shaft cover, 16 a-through hole, 17-main bearing, 18-single trapezoid female thread, 19--set screw, 20--
Key, 21-・Keyway, 22-・Cover holder, 22a-
- Through hole, 23 - Screw, 24 - Keyway, 25 - Wire support, 26 - Mounting ring, 27 - Forked wire receiving part, 27 a - One side of the two-pronged open part, 27b. ... Same other side, 28 - Tightening bolt, 29 - Support column, 30 - Screw hole, 31 - Lock pin, 32 - Main shaft side cap, 3
2a''-through hole, 33--set screw, 34--rotating part, 35--nand, 36-rotating part, 37- nut, 38-- cover plate, 39- chuck, 40-・-Hook with spring, 41-ring rope, 42.43-bolt, 4
4-Connection clamp, 45,452 -Distribution line, 46-
Nind Cap, 47...Arrow.

Claims (1)

[Scope of Claims] 1. A method for reducing the range of work power outages, which is characterized by cutting the distribution lines while maintaining the tension of the distribution lines on both sides of the construction zone, and causing a power outage only in the construction zone. 2. Attach known chucks to the power distribution lines on both sides of the construction zone at appropriate intervals, equip the main body with a rotatable main shaft, and install a main shaft cover that slides and expands and contracts within the main body as the main shaft rotates. A rod-shaped wire tensioner is provided, and two wire supports for holding distribution lines are installed on the main body of the rod-type wire tensioner so as to be able to slide, rotate, and fix freely, and The main body of the wire tensioner and the tip of the main shaft cover are connected to the chuck, the rod-shaped wire tensioner is reduced, the power distribution line between the chucks is loosened, and the loosened power distribution wire is connected to the two wire supports. , cut the distribution wire between each two wire supports, insert an end cap into each cut end, rotate one of the supports to separate the cut ends, and cut the distribution wire between the two wire supports. A work power outage range reduction device characterized in that a bypass cable and a connection clamp for work grounding are appropriately installed at each chuck attached end of the workpiece, and power is cut off only in the construction section.