JP2010142005A - Method for moving electric cable in vertical direction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for vertically moving electric cables that moves an electric cable efficiently by preventing interference between the electric cable to be moved and crossing objects under the electric cable. <P>SOLUTION: The method for vertically moving electric cables is used to move one or the other of a plurality of electric cables stretched between steel towers to steel towers higher than the steel towers. When an electric cable E is moved to destination steel towers, each upper sheave 4 for move is developed along an electric cable H which is closest on the upper side. Each operating rope 6 passes through each roller 14 for an operating rope. One end of each hoisting rope 8 is fixed to each operating rope 6. The other end of each hoisting rope 8 is hung down from each guide roller 12. The electric cable E is provided with each lower sheave 5 for move to be hung via the hoisting rope 8. One end of each operating rope 6 is pulled so as to mount the electric cable E at proper parts in the destination steel towers by raising each lower sheave 5 for move via each hoisting rope 8 while raising the electric cable E. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  This invention is used when there is an underline crossover that is an important work such as an electric wire or a building that intersects the lower side of the electric wire when the electric wire installed between steel towers is transferred to a position higher than the position. The present invention relates to an electric wire vertical transfer method for transferring an electric wire without adversely affecting these horizontal underpasses.

  In the substation, a plurality of steel towers are disposed, and electric wires installed between the steel towers are formed to intersect each other. In such a situation, when the electric wire is transferred to a higher steel tower or the upper side of the same steel tower, it is performed by powering off the electric wire to be transferred. A power outage is not possible for power supply reasons. Therefore, in many cases, such crossed electric wires are operated while being live. When transferring the upper wire that crosses the crossing wire, that is, the wire laid between the steel towers, it is necessary to avoid interference with the crossing wire. It was a hindrance. Such a problem occurs not only at the substation, but also at various places where there is a horizontal undercarriage that is an important work such as a building, a highway, a railway, and a port under the electric wire.

On the other hand, Patent Document 1 discloses an electric wire replacement method using a protective net. In this method, a protective net is attached to the lower side of the electric wire to prevent falling objects on the ground structure. The same applies to the transfer of electric wires.
JP 2007-37314 A

  However, the tensioning method or the transfer method described in Patent Document 1 forms a protective net under the existing electric wire. In this construction method, when there is an underline crossover such as a crossing electric wire, it is possible to prevent a fallen object from interfering with the crossing electric wire, but the installed protective net itself may interfere with the crossing electric wire. In addition, when installing a protective net, there is a risk of interfering with the crossed wires.

  The present invention takes the above-mentioned conventional technology into consideration, and even if there is an underline horizontal object on the lower side of the wire to be transferred, a sufficient distance from the underline horizontal object is ensured during the operation. Providing a wire transfer method that can efficiently transfer wires while the crossover wires are in a live state when the crossover wires are crossover wires. It is the purpose.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a longitudinal cable transfer line for moving one or both attachment positions of any one of a plurality of electric wires installed between two steel towers to a higher position. Construction method,
It has already been installed between the transfer destination steel towers, and when the electric wire is transferred, a plurality of upper metal wires for transfer are provided at regular intervals along the electric wire or wire to be installed on the nearest upper side. The car is deployed,
Each upper wire wheel for transfer is suspended from the upper electric wire or wire at a predetermined interval, and its position is fixed to the upper electric wire or wire.
A single operation rope is passed through the plurality of transfer upper metal wheels through the operation rope rollers provided in each of the transfer upper metal wheels.
One end of each of a plurality of lifting ropes is fixed to the operation rope at intervals,
The other end of each lifting rope is suspended through a guide roller provided at the lower end of the upper transfer wheel for transfer,
At the other end of each of the lifting ropes, there is provided a lower wheel for each transfer that supports the wire to be transferred at regular intervals.
By pulling one end of the operation rope located at one end of the upper electric wire or wire, the lower transfer wheel for each transfer is lifted through each lifting rope,
As a result, the wire to be transferred is raised together with the lower transfer wheel for each transfer, and the wire to be transferred is drawn to the position of the transfer destination,
Provided is an electric wire vertical transfer method, characterized in that both ends of the electric wire are fixed to a transfer tower.

  According to a second aspect of the present invention, a suspension wheel is disposed corresponding to a fixed position of the lifting rope with respect to the operation rope, each suspension wheel being supported by the upper electric wire or wire, and the operation rope. And one end of the lifting rope is fixed.

  According to a third aspect of the present invention, the position of each upper wire for transfer wire is fixed to the upper electric wire or wire by fixing both ends of a development rope for connecting the upper wire wheels for transfer with a predetermined interval. It is characterized by doing.

  In the invention of claim 4, a semi-metal wheel is attached between one end of the wire to be transferred and a steel tower supporting the one end of the wire to be transferred, while expanding and contracting the wire of the semi-metal wheel, The electric wire to be transferred is raised by pulling the operation rope.

  The invention according to claim 5 is characterized in that the guide roller is provided so as to be rotatable in the moving direction of the upper metal wheel for transfer.

  According to the first aspect of the present invention, since the wire transfer operation of the wire to be transferred is performed by pulling one end of one operation rope in one direction, the wire to be transferred can be simply and quickly raised. At this time, the wire to be transferred rises simultaneously at each point throughout the entire tower, so that part of the wire to be transferred does not sag, and the operation is quick and positioned below the wire to be transferred. It is possible to perform the transfer work while preventing interference with underlined overhead objects such as crossing electric wires. Therefore, work with excellent safety can be realized. Further, since the operation rope can be developed simultaneously with the development of the wire transfer wire wheel, an efficient operation can be performed without requiring a separate process.

  According to the invention of claim 2, a suspension wheel is arranged corresponding to each fixing position of each lifting rope with respect to the operation rope, and the suspension wheel fixed to the operation rope is a wire to be transferred. Since the one end of the lifting rope is fixed to the upper upper wire or wire, the distance between the upper electric wire or wire and the operation rope can be kept constant, and the operability of the operation rope is improved. To do. Moreover, since the load of the operating rope can be supported by the suspension wheel, the load on the guide roller of the upper transfer wheel for transfer can be reduced. Furthermore, since the suspension wheel can be deployed along the upper wire or wire immediately adjacent to the wire to be transferred, deployment is easy.

  According to the third aspect of the present invention, the upper transfer wheel is connected to the upper electric wire or wire by using a development rope, so that the upper transfer wheel is maintained while maintaining a certain distance. The gold wheel can be easily deployed.

  According to the invention of claim 4, with a simple structure using a semi-gold wheel, when the wire to be transferred is raised, the excess or shortage of the length of the wire is adjusted with the wire wound around the semi-gold wheel. can do.

  According to the invention of claim 5, when the operating rope is moved along the electric wire or the wire immediately above the wire to be transferred, and the lifted rope is lifted by the lifting rope, the lifting rope is pulled. Since the guide roller rotates following it, smooth work can be realized without damaging the lifting rope.

  The present invention is an electric wire vertical transfer method for moving one or both of the mounting positions of any one of a plurality of electric wires installed between two steel towers to a high position, and the steel tower of the transfer destination Are already installed, and when the wire is transferred, a plurality of upper metal wheels for transfer are developed with a certain interval along the wire or wire to be installed on the nearest upper side, Each transfer upper wheel is suspended from the upper electric wire or wire at a predetermined interval, and its position is fixed to the upper electric wire or wire. The operation rope roller is provided with a single operation rope passing through the plurality of upper transfer wheels, and one end of each of the plurality of lifting ropes is fixed to the operation rope with a gap therebetween. The other end of the lifting rope is the lower end of the upper transfer wheel Each of the lifting ropes is suspended through a guide roller provided at the other end of each lifting rope, and each transfer wire lower wheel is provided to support the wire to be transferred at a predetermined interval, and one end of the upper wire or wire. By pulling one end of the operation rope located at the position, the transfer wire lowering wheel is lifted through the lifting ropes, and the transfer wire is lifted together with the transfer lowering wheel. Then, draw the wire to be transferred to the position of the transfer destination, and fix both ends of the wire to the steel tower of the transfer destination, so that Transfer work can be performed while preventing interference with excess objects.

  1-6 is the schematic which shows the electric wire vertical transfer method concerning this invention in order. FIG. 7 is a schematic view of a longline type gold wheel. In the following description, a steel tower will be described as an example of a horizontal undercarriage below the wire to be transferred. However, the present invention is not limited to this, and is not limited to this. The same can be applied to the case where there are various underline crossovers such as. Further, “transfer” described in the present specification and claims refers to changing the support point of one or both of the electric wires.

  As shown in FIG. 1, a plurality of electric wires E, F, and G such as power transmission lines are installed between steel towers A and B. These electric wires are stretched at both ends via an insulator string (not shown). In a substation or the like, a plurality of steel towers are arranged. In FIG. 1, electric wires E, F, and G are installed between the towers A and B above the tower C. That is, the steel tower C and the electric wires installed on the steel tower C are located below the electric wires E, F, and G. In the construction of transferring the electric wires E, F, and G to the steel tower D, the electric power of the electric wires E, F, and G is stopped, but the electric wires installed on the steel tower C remain live.

In such a situation, when the electric wires E, F, G are transferred between the steel towers A, D among the plurality of electric wires installed between the steel towers A, B, for example, when the electric wire E is transferred, the steel tower A As shown in FIG. 2, when the electric wire E is already installed between the steel tower D and the electric wire E is transferred to the steel tower D, A plurality of idle caster wheels 1 are deployed. Next, as shown in FIG. 3 and FIG. 4, a long-pitch gold wheel 2 is connected to the rear side of the unfolded empty suspension wheel 1 at a fixed interval, and a plurality of wires H are connected to the wire H while collecting the empty suspension wheel 1. The longline type suspension wheel 2 is developed.
As shown in FIG. 7, this longline type suspension wheel 2 is composed of a suspension wheel 3, an upper transfer wheel 4 for transfer, and a lower transfer wheel 5 for transfer. The upper wire wheel 4 for transfer is suspended from the electric wire H by a roller at the upper portion thereof, and is fixed to a development rope 7 stretched along the electric wire H. The operation rope 6 is provided between an operation rope roller 14 and a roller 17 which are provided in the middle portion of the upper transfer wheel 4 for transfer line with a space in the vertical direction. The suspension wheel 3 is suspended from the electric wire H behind the upper transfer wheel 4 for transfer and is fixed to the operation rope 6. One end of the lifting rope 8 is fixed to the suspension wheel 3. The other end of the lifting rope 8 is connected to the lower transfer wheel 5 for transfer via a guide roller 12 provided at the lower end of the upper transfer wheel 4 for transfer. In the lower wire wheel 5 for transfer, the electric wire E is suspended by the lower roller 25.

  A 14 mm special rope can be used as the operation rope 6, and a 14 mm special rope can be used as the development rope 7. As the lifting rope 8, a 10 mm nylon rope can be used. In addition, the diameter and type of these ropes to be used are appropriately changed according to the construction conditions.

  The unrolling suspension wheel 1 and the longline type wheel 2 are developed by moving the unfolding rope 7 along the electric wire H by a self-propelled aircraft, a winch from the ground, or the like. Further, in the case of the development of the longline type wheel 2, the operation rope 6 is also moved along the electric wire H at the same time. Accordingly, the suspension wheel 3 and the upper transfer wheel 4 for transfer are moved along the electric wire H, and the lower transfer wheel 5 for transfer is moved along the electric wire E to be transferred. One end of the electric wire E is removed from the insulator series (not shown) of the steel tower A, a cam along 9 is attached, and a semi-gold wheel 10 is connected thereto.

  The process up to this point is the developing process of the longline type suspension wheel 2 shown in FIGS.

  Next, as shown in FIG. 5, with the longline type suspension wheel 2 deployed, both ends of the deployment rope 7 are fixed to the steel towers A and D, and only the operation rope 6 is moved to the steel tower D side with a winch or the like. Pull (arrow I direction). Thereby, the suspension wheel 3 fixed to the operation rope 6 also moves to the steel tower D side. As a result, the lifting rope 8 having one end fixed to the suspension wheel 3 is also pulled to the steel tower D side via the guide roller 12 of each upper wire wheel 4 for transfer. Therefore, the lower wire wheel 5 for transfer connected to the suspension wheel 3 via the lifting rope 8 moves upward in the direction of the upper wire wheel 4 for transfer (in the direction of arrow J). Along with this rise, the wire 11 extends from the semi-gold wheel 10 (in the direction of the arrow K) to make up for the excess and deficiency of the actual length of the electric wire E. It is pulled up in the direction of the car 4 (in the direction of arrow J) and is drawn to an appropriate location on the tower D. In addition, as shown in FIG. 5, if the long-pipe suspension wheel 2 is hooked on the electric wire E, the operation rope 6 is pulled toward the steel tower D side, and the suspension wheel 22 is pulled toward the steel tower D side, the wire E It is easy to draw to the tower D. With the electric wire E drawn to the steel tower D, one end of the unfolding rope 7 is removed from the steel tower A, the other end of the unfolding rope 7 is pulled to the steel tower D side, and a plurality of longline suspension wheels 2 are collected. As shown in FIG. 6, the electric wire E is attached to an appropriate portion of the steel tower D.

  As described above, since the raising work of the electric wire E is performed by moving the operation rope 6 along the electric wire H, the electric wire E can be raised easily and quickly. At this time, since the electric wire E is lifted simultaneously over the entire tower A and D while being supported by a plurality of longline-type gold wheels 2 provided at intervals, the operation is further accelerated. Further, since the operation rope 6 can be deployed simultaneously with the deployment of the upper transfer wheel 4 for transfer and the lower transfer wheel 5 for transfer, an efficient operation can be performed without requiring a separate process. It becomes possible. Furthermore, by simultaneously raising each part of the wire E over the entire length between the steel towers A and D, the wire E interferes with the horizontal overhead objects such as the steel wire installed on the steel tower C and the steel tower C during the transfer work. This can be surely prevented. Further, the excess and deficiency of the actual length when the electric wire E is raised can be compensated by simple adjustment of the semi-gold wheel 10 and the cam along 9.

  The steps up to here are the wire pulling and attaching steps shown in FIGS.

  FIG. 8 is a front view of the upper transfer wheel for transfer, and FIG. 9 is a side view.

  As shown in the figure, the upper transfer wheel 4 for transfer is provided with a main roller 13 (two main rollers in the figure) that can rotate on the electric wire H and an operation rope roller 14 that can rotate on the operation rope 6. . An upper portion of the upper transfer wheel 4 for transfer is provided with a pinching portion 16 that can hold the development rope 7 by tightening the thumbscrew 15. By pinching the development rope 7 here, the upper transfer wheel 4 for transfer is fixed to the development rope 7. At the lower part of the upper transfer wheel 4 for transfer, it is possible to rotate about the shaft 17a in the axial direction of the unfolding rope 7 and the operation rope 6 (moving direction of the long rope type wheel 2) (shown by the dotted line in FIG. 8). A guide roller 12 is provided. By forming the guide roller 12 so as to be rotatable in this way, when the operating rope 6 is moved along the electric wire H and the transfer wire lowering wheel 5 is raised by the lifting rope 8, the lifting rope 8 is pulled. Since the guide roller 12 rotates following the direction, a smooth operation can be realized without damaging the lifting rope 8. Further, by forming the roller 17 on the shaft 17a that serves as the pivot point of the guide roller 12, the possibility of further damaging the lifting rope 8 can be suppressed. When the operation rope 6 is slack, the lifting rope 8 is supported by the roller 17.

  FIG. 10 is a front view of a hanging wheel, and FIG. 11 is a side view.

  As illustrated, the suspension wheel 3 includes a main roller 18 that can rotate on the electric wire H. At the lower part of the suspension wheel 3, a pinching portion 20 that can clamp the operation rope 6 by tightening the thumbscrew 19 is provided. The suspension wheel 3 is fixed to the operation rope 6 by sandwiching the operation rope 6 here. A ring hole 21 for fixing one end of the lifting rope 8 is formed in the lower part.

  In the above embodiment, one of the wire transfer destinations is the new steel tower D, but this method can also be applied to the case of vertical transfer to a high position on the same steel tower. Moreover, in the present Example, although the transfer which changes the support point of one side of an electric wire was shown, the transfer which changes both the support points of an electric wire can also be performed. In that case, both ends of the wire to be transferred are cut off and both ends are hung on the suspension wheel 22 so that each suspension wheel 22 is lifted as the lower wire wheel 5 for transfer is raised.

  In the above embodiment, the wire H is used when the wire E is transferred. However, this is not necessarily the wire, and is installed between the wires A and D, and the wire E is transferred. As long as the wire is disposed on the upper side closest to the wire, a wire used as a ground may be used.

It is the schematic which shows the wire transfer method concerning this invention in order. It is the schematic which shows the wire transfer method concerning this invention in order. It is the schematic which shows the wire transfer method concerning this invention in order. It is the schematic which shows the wire transfer method concerning this invention in order. It is the schematic which shows the wire transfer method concerning this invention in order. It is the schematic which shows the wire transfer method concerning this invention in order. It is the schematic of a longline type suspension wheel. It is a front view of the upper money wheel for transfer. It is a side view of FIG. It is a front view of a hanging wheel. It is a side view of FIG.

Explanation of symbols

1: idle hanger wheel, 2: long-line hanger wheel, 3: hanger wheel, 4: upper metal wheel for transfer, 5: lower metal wheel for transfer, 6: operation rope, 7: deployment rope, 8: Lifting rope, 9: Cam along, 10: Semi gold wheel, 11: Wire, 12: Guide roller, 13: Main roller, 14: Roller for operation rope, 15: Thumb screw, 16: Clamping part, 17: Roller, 18: main roller, 19: thumbscrew, 20: clamping part, 21: ring hole, 22: hanging wheel, A, B, C, D: steel tower, E, F, G, H: electric wire

Claims (5)

It is an electric wire vertical transfer method that moves one or both of the mounting locations of a plurality of wires installed between two steel towers to a higher position,
It has already been installed between the transfer destination steel towers, and when the electric wire is transferred, a plurality of upper metal wires for transfer are provided at regular intervals along the electric wire or wire to be installed on the nearest upper side. The car is deployed,
Each upper wire wheel for transfer is suspended from the upper electric wire or wire at a predetermined interval, and its position is fixed to the upper electric wire or wire.
A single operation rope is passed through the plurality of transfer upper metal wheels through the operation rope rollers provided in each of the transfer upper metal wheels.
One end of each of a plurality of lifting ropes is fixed to the operation rope at intervals,
The other end of each lifting rope is suspended through a guide roller provided at the lower end of the upper transfer wheel for transfer,
At the other end of each of the lifting ropes, there is provided a lower wheel for each transfer that supports the wire to be transferred at regular intervals.
By pulling one end of the operation rope located at one end of the upper electric wire or wire, the lower transfer wheel for each transfer is lifted through each lifting rope,
As a result, the wire to be transferred is raised together with the lower transfer wheel for each transfer, and the wire to be transferred is drawn to the position of the transfer destination,
An electric wire vertical transfer method, wherein both ends of the electric wire are fixed to a steel tower at the transfer destination.   Corresponding to the fixing position of the lifting rope with respect to the operation rope, a lifting wheel is provided, each lifting wheel is supported by the upper electric wire or wire, fixed to the operation rope, and the lifting rope The wire vertical transfer method according to claim 1, wherein one end of the rope is fixed.   Fixing the position of each upper wire for transfer wire with respect to the upper electric wire or wire is performed by fixing both ends of a development rope that connects the upper wire wheels for transfer to each other with a predetermined interval. The wire vertical transfer method according to claim 1 and 2.   A semi-metal wheel is attached between one end of the wire to be transferred and a steel tower that has supported one end of the wire to be transferred, and the operation rope is pulled while extending and contracting the wire of the semi-metal wheel. The electric wire vertical transfer method according to any one of claims 1 to 3, wherein the electric wire to be transferred is raised.   The electric wire vertical transfer method according to any one of claims 1 to 4, wherein the guide roller is provided so as to be rotatable in a moving direction of the upper metal wheel for transfer.