JPH035124B2 - - Google Patents

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 construction zones during overhead construction work.

``Prior art'' Conventionally, in the event of a power outage due to overhead line construction, etc., a switch or a power pole equipped with both terminal sections of the distribution line is used to cut off or disconnect the switch or both terminal sections, and the power is interrupted between each section. However, due to high costs and other reasons, the switch or both terminals are not installed on each utility pole, and the power outage will also require long power outages in spans outside the construction zone. This has major drawbacks, such as frequent collateral power outages and increased labor costs required for switch switching operations to reduce the range of power outages.

``Problem that the invention seeks to solve'' A system that enables customers outside the construction zone to avoid long-term power outages due to overhead line construction, etc.
Another objective is to eliminate the need for complicated switching operations of switches in order to reduce the power outage range in the event of a construction power outage.

``Means for solving the problem'' Well-known chucks are attached to the 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 A rod-type wire tensioner equipped with a main shaft cover so as to expand and contract is connected, and two electric wire supports for holding the distribution line are inserted into the main body of the rod-type wire tensioner so as to be slidable, rotatable, and fixed. , the distance between each of the chucks is reduced using a rod-shaped 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.

``Function'' Even if the utility pole in the work area is not equipped with a switch or both detents for the distribution line, the distribution line can be cut while the distribution line remains under tension, and by connecting the bypass cable as appropriate. , it is possible to cut power only to the work area without having to switch the switch to reduce the power outage range.

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

Reference numeral 1 denotes a rod-type wire tensioner, and 2 is a main body of the wire tensioner 1, in which a cover 4 made of FRP is protruded from one side of a main body case 3 and fixed with screws 5, 5. Reference numeral 6 denotes a main shaft that passes through a shaft hole 7 drilled on one side of the main body case 3 and extends 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 main shaft 6 on the cover 4 side 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. Reference numeral 11 denotes a bevel gear that meshes with the bevel gear 9, and is fixed to the tip of a drive shaft 12 extending through the front of the main body case 3 perpendicularly to the main shaft 6. Reference numeral 13 denotes a hexagonal hole drilled in the axial direction from the base end of the drive shaft 12, which is similar to a known ratchet handle 14.
The tip of the handle shaft 15 is formed into a hexagonal bar 15a,
A ratchet handle 14 can be freely inserted into and removed from the hole 13. 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 cylindrical shape with a through hole 16a through which the main shaft 6 is inserted over the entire axial length. 17 is a cylindrical main bearing with one end closed, and its outer diameter is connected to the cover 4 of the main body 2.
The main shaft cover 16 is fitted into the inner diameter of the main shaft cover 16, and a trapezoidal female thread 18 is formed at the closed end so that the trapezoidal thread 10 of the main shaft 6 engages with the trapezoidal thread 18. The base end of the main shaft cover 16 is inserted into the open end, and the main shaft cover 16 and the main bearing 17 are fixed with setscrews 19, 19. Reference numeral 20 denotes a key, which is made of ABS resin, and is inserted into a key groove 21 drilled from the base end of the main shaft cover 16 in the axial direction to the distal end thereof, extending over the main bearing 17, and then glued or the like. It is fixed. Reference numeral 22 is a cover holder made of DURACON (trade name of synthetic resin made from polyacetal copolymer), and has a through hole 22a into which the spindle cover 16 is inserted.
The main shaft 6 The spindle cover 16 is extended and contracted from the cover 4 of the main body 2 without rotating. Reference numerals 25 and 25 denote wire supports made by Juracon, each of which has a mounting ring 26 slidably and rotatably inserted into the outer periphery of the cover 4 of the main body 2, and a bifurcated wire receiver 27 rotated and fixed at the tip with a bolt 28. A freely equipped support column 29 is tightened and fixed into a screw hole 30 provided through the circumferential surface of the mounting ring 26, and when holding an electric wire, the forked electric wire receiving portion 2 at the tip is used to hold the electric wire.
7 appropriately, insert the electric wire into the receiving part 27, and insert the electric wire into the receiving part 27.
The tip of the lock pin 31 installed on the same side 2
7b, and the open portion of the receiving portion 27 is closed and held by the locking pin 31. Reference numeral 32 denotes a main shaft side cap, which is inserted into the tip of the main spindle cover 16 and fixed with setscrews 33, 33. A through hole 32a is bored at the tip, and the through hole 32a allows rotation for return etc. A portion 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. Reference numeral 39 denotes 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 one side. 41
is a ring rope, and the rotating parts 3 at both ends of the rod-type wire tensioner 1
4 and 36 with bolts 42 and 43, respectively. Rotating parts 3 at both ends of the above rod-type wire tensioner 1
4, 36, and bolts 42,
The ring ropes 41, 41 attached at 43, and the spring-loaded hooks 40 of chucks 39, 39 fixed to both sides of the construction zone, on which the ring ropes 41, 41 are hung.
40 and the main body 2 of the rod-type wire tensioner 1 and the shaft cover 16
This is a connecting member that connects the tip of the chuck 39 and the chuck 39, 39. Reference numeral 44 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 working ground.

The present invention has the above-described configuration, and when using the same, the coating of the distribution wire 45 is peeled off over an appropriate width at intervals slightly longer than the length of the rod-shaped wire tensioner 1 when it is extended, and the coating is removed using a known chuck. 39, 39 are attached so that their respective spring-loaded hooks 40, 40 face each other, and ring ropes 41, 41 attached to the rotating parts 34, 36 at both ends of the rod-shaped wire tensioner 1 are attached to the spring-loaded hooks 40, 40.
The rod type wire tensioner 1 is suspended between the chucks 39 and 39 by opening the hook against the spring, and the ratchet handle 14 is inserted into the hexagonal hole 13 of the drive shaft 12 on the front of the main body case 3. When the hexagonal rod 15a at the tip of the handle shaft 15 is inserted and the ratchet handle 14 is rotated clockwise, rotation is transmitted to the bevel gear 9 via the bevel gear 11 fixed to the drive shaft 12, and the main shaft 6 to which the bevel gear 9 is fixed is rotated. rotates to the right, moves the main shaft cover 16 toward the proximal end inside the cover 4 of the main body 2 by the main bearing 17, contracts the rod-type wire tensioner 1, and pulls the chucks 39, 39; The chuck 39,
Loosen the distribution wire 45a between the wire supports 25, 25, and attach the wire support 25 to the cover 4 of the main body 2.
26 is slid and rotated, and the forked wire receiving portion 27,
27 lock pins 31, 31 on the other side 27
b, 27b to open it, insert the electric wire 45a into the bifurcated open part, screw the tips of the locking pins 31, 31 into the side surfaces 27b, 27b to close it, hold the electric wire 45a, The wire supports 25, 2 are screwed into the screw holes 30, 30 of the mounting rings 26, 26, fixed to the cover 4, and the wire supports 25, 2 are rotated while maintaining the tension of the distribution wire 45.
The distribution wire 45a is cut at the center between the wire supports 25 and 5, and the end caps 46 are inserted into each cut end, and in order to ensure the separation of the cut ends, the support 29 of one wire support 25 is loosened and the mounting ring is attached. 26 is rotated 180 degrees as shown in FIG. 6, and the support 29 is again tightened on the ring 26 to fix the wire support 25. At this time, when rotating the wire support 25 180 degrees or restoring the protection of the wire after cutting the wire, the ratchet handle 14 is rotated to the hexagonal hole 13 on the front of the main case 3.
This prevents the ratchet handle 14 from getting in the way of the operation. Perform the above operation on each electric wire on both sides of the construction section, and then
By appropriately attaching a bypass cable to 4 and a work ground to the inner connection clamps 44, 44, it becomes possible to shut off power only in the construction zone without having to perform a switch switching operation to reduce the power outage range.
In addition, when connecting the cut end of the power distribution line 45a, remove the end caps 46, 46 in a separated state as shown in FIG. A known sleeve is inserted into the cut end of the distribution line, the other cut end is rotated 180 degrees by the mounting ring 26, and the other cut end is inserted into the other end of the sleeve inserted into one cut end. The sleeve is compressed and caulked to each cut end for connection.

Furthermore, when removing the rod-shaped wire tensioner 1, one side surface 27 of the forked wire receiving portion 27 of the wire support 25 is removed.
Pull out the lock pin 31 from the other side surface 27b, perform the opposite operation to the above, and attach the wire supports 25, 2.
5, and insert the handle shaft 15 of the ratchet handle 14 into the hexagonal hole 13 on the front of the main body case 3 again.
Switch the known claw 14 in the direction of arrow 47 in FIG.
Rotate the handle 14 to the left to extend the rod-type wire tensioner 1 in the opposite direction to the above, eliminate the slack in the distribution line 45a between the chucks 39, 39, and tighten the rod-type wire tensioner 1 to the chuck 39 with the ring ropes 41, 41. , 39, and the ring ropes 41, 41 are suspended between the chucks 39, 39.
39 from the spring-loaded hooks 40, 40, then remove the chucks 39, 39 and the connecting clamps 44,
44 is 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. Further, by using the device of the present invention, it is possible to cut the distribution line between the wire supports 25, 25, and the cut end of the distribution line does not spring off, making it safe and allowing one of the wire supports 25 to be cut after cutting.
By rotating 180°, a sufficient distance of 20 cm or more can be secured between the cut ends. In addition, the work from installing the chuck 39 to cutting and connecting the distribution line 45a can be done by one person, and the outside of the main body case 3, main shaft 6, bevel gears 9, 11, etc. is made of composite materials such as FRP and Juracon. Since it is made of resin, it is lightweight and easy to handle, making work more efficient.
Furthermore, by using the device of the present invention, in addition to cutting the distribution line 45 near utility poles using a scaffolding device, it is possible to cut the distribution line 45 in the vicinity of a utility pole using an aerial work vehicle while maintaining tension in the center of the span, etc. , it becomes possible to disconnect the distribution line 45,
It can be used in any construction environment.

[Brief explanation of drawings]

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 2A
- A cross-sectional view, Figure 4 is a B-B cross-sectional view, Figure 5.
The figure is a front view of the electric wire support, and FIG. 6 is a side view of the main parts showing the separated state after the distribution line is cut. 1... Rod type wire tensioner, 2... Main body, 3... Main body case, 3a... Through hole, 4... Cover, 5... Screw, 6... Main shaft, 7... Shaft hole, 8... Thrust bearing, 9...Bevel gear, 10...Trapezoidal screw, 1
1...Bevel gear, 12...Drive shaft, 13...Hexagonal hole, 14...Ratchet handle, 14a...
Claw, 15...Handle shaft, 15a...Hexagonal bar, 1
6...Spindle cover, 16a...Through hole, 17...
Main bearing, 18... Trapezoidal female thread, 19... Set screw, 20... Key, 21... Keyway, 22... Cover receiver, 22a... Through hole, 23... Screw, 2
4...Keyway, 25...Wire support, 26...Mounting ring, 27...Forked wire receiver, 27a...
One side of the bifurcated opening, 27b...the other side,
28... Tightening bolt, 29... Support, 30... Screw hole, 31... Lock pin, 32... Main shaft side cap, 32a... Through hole, 33... Set screw, 3
4... Rotating part, 35... Nut, 36... Rotating part, 37... Nut, 38... Lid plate, 39... Chack, 40... Hook with spring, 41... Ring rope, 42, 43... ... Bolt, 44 ... Connection clamp, 45, 45a ... Distribution line, 46 ... End cap, 47 ... Arrow.

Claims (1)

[Scope of Claims] 1. A main shaft cover is provided on both sides of the power distribution line in the construction zone, the both sides of which are fixed with known chucks, and which slides and expands and contracts within the main body by the rotation of the main shaft rotatably mounted on the main body. Connecting the chuck to the main body and the tip of the main shaft cover of the rod-type wire tensioner with a connecting member,
The rod-shaped wire tensioner is reduced in size to loosen the distribution line between the chucks, and the slackened distribution wire is replaced with two electric wire supports that can slide, rotate, and fix freely on the main body of the rod-shaped wire tensioner. A method for reducing a work power outage range, characterized by cutting the power distribution line while maintaining the tension of the power distribution line between the two wire supports, and causing a power outage only in the construction zone. 2. A rod-type wire tensioner is provided, which is equipped with a main shaft rotatably mounted on the main body, and a main shaft cover that slides and expands and contracts within the main body as the main shaft rotates, and the main body of the rod-type wire tensioner is Two wire supports that hold the distribution lines are installed on the main body so that they can slide, rotate, and fix freely, and the distribution lines are attached to the main body of the rod-type wire tensioner, the tip of the main shaft cover, and the distribution lines on both sides of the construction zone. A connecting member is provided to connect the chuck with a known chuck which is fixed at a slightly longer interval than the extended rod-type wire tensioner, and the rod-type wire tensioner is reduced and the slack distribution line between the chucks is connected to the two electric wires. An end cap is inserted and provided at each cut end of a distribution line held by a support and cut between the two wire supports;
Rotate one side of the support to separate the respective cut ends, install a bypass cable and a connection clamp for work grounding at each chucked end of the distribution line as appropriate, and cut off power only in the construction zone. A working power outage range reduction device featuring: