JP4277281B2 - Hanging wire type transfer method by net formation - Google Patents

Hanging wire type transfer method by net formation Download PDF

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Publication number
JP4277281B2
JP4277281B2 JP2004180309A JP2004180309A JP4277281B2 JP 4277281 B2 JP4277281 B2 JP 4277281B2 JP 2004180309 A JP2004180309 A JP 2004180309A JP 2004180309 A JP2004180309 A JP 2004180309A JP 4277281 B2 JP4277281 B2 JP 4277281B2
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tower
transfer
rope
wire
wheel
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JP2004180309A
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JP2005333789A (en
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政巳 杉山
宏史 林
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川北電気工業株式会社
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  The present invention relates to a method for transferring and replacing an electric wire (an overhead ground wire and a power line) stretched between existing steel towers to a new or temporary steel tower located on the side of the existing steel tower. The present invention relates to a relocation method that suppresses fluctuations in the sag of an electric wire that occurs during wiring.
  As a known technique related to the conventional transfer method, generally, the tip of the transfer wire to which the dividing line is connected after the wire stretched between both diameters in the transfer source steel tower is retained in the tower body and cut. As shown in FIG. 10, a Kamalong is attached to the part and the electric wire is gripped, and two sets of semi-gold wheels are connected to the Kamalong and the transfer wire rope drawn from the transfer source and transfer destination tower is connected. In addition, there is a construction method in which an electric wire is transferred in the air by “exchange” of both wires.
  In addition, as shown in FIG. 11, a main wire is stretched between the transfer source tower and the transfer destination steel tower, a movable two-wheel pulley is hung on the wire, and the overhead wire gold wheel that suspends the electric wire on the pulley is provided. Move the two-wheel pulley of the suspended transfer device to the transfer destination and transfer the electric wire. First, the wires attached to the upper part of the tower are transferred to the lower part in order, and the upper line to the lower line are transferred. There is a “slide transfer method”.
In addition, as shown in FIG. 12, a wire is being transferred by a transport device in which a main rope stretched between the transfer source and the top of the transfer destination tower is hung, and a overhead wire wheel is hung on the main rope. In addition to transferring the main line to the underline without changing the main rope, it is also possible to transfer the work while adjusting the drooping of the hoist, as well as the construction equipment (arm material, overhead wire material) by the suspended transport device In other words, an “electric wire transfer method” is disclosed that can perform unloading and unloading operations of tools, etc.) in parallel.
JP-A-11-205928 JP 2003-180009 A
  However, the general construction method shown in FIG. 10 requires a delicate operation skill in the “exchange” of the two wire ropes drawn out from the transfer source and transfer destination towers in order to prevent the series of wires inserted with the dividing line from drooping. Since it is difficult to perform the transfer work safely unless it is a skilled person, there are problems in workability such as installation of protective scaffolding and nets as well as the installation of a large number of observers as security measures for the line.
  In addition, the “slide transfer method” using the transfer device of FIG. 11 is also a device that cannot displace the wire being transferred suspended on the overhead wire wheel vertically (in the vertical direction), so that the actual length of the wire is increased and supported. Since it is difficult to suppress the increase phenomenon of wire sag that occurs when the point height difference is large, the sag is controlled while the auxiliary wire rope fed from the transfer source and transfer destination towers is used to suppress sag. As measures to avoid the approach and contact with the overlying workpiece under the line of the cable to be inserted, safety measures such as the installation of a protective net or a scaffold under the line were necessary, and there was a problem in the safety of the work.
  In addition, in the “wire transfer method” using the carrier shown in FIG. 12, by using a carrier (carrier) to suppress the fluctuation (displacement in the vertical direction) of the sag of the wire during the transfer, Although the problem of "exchange" operation with auxiliary wires and underline security measures (construction of protection nets, scaffolding, etc.) has been solved, the displacement status of the wires being transferred is monitored, and the linkage work between the operation and operation with the winch is accurately performed. In addition, the transfer wire is moved while being displaced up and down in the state where the middle part of a series of long wires connected between the two diameters is suspended (supported at one point) by an overhead wire metal wheel. If a crosswind occurs during the transfer, it is expected that the swaying of the wires will be uneven and the sag of the diameters of the transferred wires will be uneven (the wires will flow and hang down between the long diameters). Although it is a perfect transfer method such as the possibility of approaching the workpiece There.
  The problem to be solved by the present invention is to investigate the countermeasures related to the sag of the wire during the transfer in the conventional transfer method, and to solve this drastically, and to protect the safety facility under the line In addition, in the unlikely event that a strong wind is generated during the transfer work, or if an unexpected situation such as a broken wire or an operational error occurs, the suspended wire will sway, slide or drop. This is to establish a construction method that can be transferred safely and surely without having to do so.
  As means for solving the above problems, (1) a rope for suspending an electric wire uses a light and strong kevlar. (2) After the electric wire is cut off at the main transfer tower and temporarily fixed, the electric wire is hung (supported) on a hanging wheel hung at equal intervals and transferred. (3) A bus bar (support rope, connecting rope, and suspension wheel) for supporting the electric wire is stretched between the diameters of the transfer tower and the transfer destination tower from the existing tower. (4) A bridge rope for connecting the suspension wheels suspended by the connection rope to the support ropes of both bus bars is installed horizontally. (5) A suspension net for linking a suspension wheel of both buses and a suspension wheel for suspending electric wires by a bridge rope is formed. (6) Tension the both supporting bus bars to relieve the horizontal tension of the electric wires suspended on the hanging wheel suspended at equal intervals. (7) Connect the wire fed from the transfer source tower and the transfer destination tower to the metal fitting for holding the electric wire, move the electric wire horizontally along the bridge rope, and draw it toward the transfer destination tower side. (8) The main technique is to connect the increment (secant) of the actual wire length on the transfer tower side.
  Since the construction method of the present invention does not insert the dividing line before the transfer, and connects the required length of the electric wire at the transfer destination, the phenomenon of increasing the sag caused by the increase in the actual length of the electric wire accompanying the transfer is suppressed.
  A large number of suspension wheels suspended from the support bus between the two diameters and a suspension wheel for suspending the wires are arranged at equal intervals and the bridge ropes are linked so that the support distance of the wires is evenly distributed. (Between the short diameters), the horizontal tension of the electric wires is relaxed, and the drooping of the electric wires between the suspension wheels is suppressed (small sag).
  Because the net to be stretched between both diameters consists of a lightweight, tough Kevlar rope support bus (4) and a horizontal bridge rope (1), the load load between the spans Is small and has a dual protective role. Even if a problem such as a broken rope or a crosswind or an operation error occurs during the transfer of the wire, an unforeseen situation such as a sideways swing, drooping or slipping of the wire may occur. Because it does not occur, it is rich in safety.
  This eliminates the need for constructing temporary facilities such as protective scaffolds and protective nets to prevent contact and contact with laterally overworked workpieces below the line between the relocation spans, thereby reducing local environmental costs.
  The materials and tools used to form the suspension net are all conventional products, and it is economical and environmentally friendly because there is no need to make and use special materials and tools for this method. It has many advantages and effects, such as contributing to a significant reduction in total construction costs.
  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 2 to 5 show the outline of the technique and procedure of the transfer method of span cable in the overhead power transmission line. When transferring, the suspension of the installed cable at both ends of the transfer section and the transfer main tower After disconnecting and temporarily securing the wire at
As shown in Fig. 5 (a), on the main transfer tower 2 side, a self-propelled machine is set on the wire 3 between the diameters of the existing tower 1 side, and the coasting rope 7 is connected to this, and the required number of suspension cars 10 (FIG. 6) is pulled, and the hanging wheel 10 is suspended between the diameters at equal intervals.
As shown in FIG. 5 (b), the connecting rope 4 and the support rope 5 are laid on the suspension wheel 10 at the end of the coasting rope 7, and the required number of parallel metal wheels 8 (the annular ring in FIG. 9). It is an 8-shaped two-wheel metal wheel in which two gold wheels 9 are connected in parallel. A connection rope 4 is attached to one annular metal wheel 9 and suspended from an electric wire 3 and supported on the other annular metal wheel 9. -Pass through the cable 5).
Figure 5 connected tethered parallel gold wheel 8 of terminations suspended in span as (c) B - flop 4 and the support B - relocated the flop 5 to Utsurisen destination tower 20 side, supported Russia - 5 is stretched and fixed on the transfer destination tower 20 side, and the coasting rope 7 is laid on the parallel metal wheel 8 at the transfer source 2 tower side. Attached and suspended on the electric wire 3.
As shown in FIG. 5 (d), while pulling together the connecting rope 4 and the supporting rope 5 that are common to the parallel metal wheel 8 suspended between the spans on the existing tower 1 side, the metal wheel 8 is recovered. An annular metal wheel 9 attached to the connecting rope 4 is disposed between the diameters of the transfer destination steel tower 20 via the support rope 5 and the coasting roll is connected via the electric wire 3 from the transfer steel tower 2 side. The required number of suspension wheels 10 to be mounted on the hub 7 are suspended between the spans at equal intervals.
As shown in FIG. 5 (e), while the coasting rope 7 is drawn on the existing steel tower 1 side and the suspension wheel 10 is collected, the connecting rope 4 and the terminal suspension wheel 10 on the transfer main tower 2 side are connected. The support rope 5 is extended, and the parallel metal wheel 8 mounted on the support rope 5 is hung on the electric wire 3, and the same number of the gold wheels 8 are arranged at equal intervals between the spans, and the support rope 5 is already provided. I get nervous at the tower 1.
FIG. 5 (f) collects the parallel metal wheel 8 on the existing steel tower 1 side, and spreads the connecting rope 4 and the support rope 5 to the terminal metal wheel 8 at the end, and the required number of annular metal wheels 9 are added thereto. Are mounted at equal intervals and placed between the spans, and the support rope 5 is tensioned and fixed by the existing tower 1 and the transfer destination tower 20.
As shown in FIG. 5 (g), each is attached to the connecting rope 4 via the support rope 5 stretched between both diameters of the existing steel tower 1, the transfer main tower 2 and the transfer destination steel tower 20. The required number of the annular metal wheels 9 are hung between both diameters at equal intervals, and a support bus 55 composed of the support rope 5, the connection rope 4, and the annular metal wheel 9 is stretched in a V shape. Set up.
As shown in FIG. 5 (h) and FIG. 3, the annular metal wheel 9 attached to the connecting rope 4 of the support bus 55 stretched between both diameters on the existing tower 1 side is connected and suspended from the electric wire 3. Since the bridge rope 6 connecting the supporting buses 55 through the right angle metal wheel 88 (the eight-shaped two-wheel metal wheel in which 92 annular metal wheels in FIG. The connecting ropes 4 are alternately drawn on the source 2 and the transfer destination tower 20 side.
As shown in FIG. 5 (i), the supporting buses between the two diameters of the bridge ropes 6 at the required number and at equal intervals while pulling the connecting ropes 4 alternately on the transfer steel tower 2 and the transfer steel tower 20 side. After laying in a state of straddling 55, the connecting rope 4 is fixed by a steel tower between both diameters, and the wire 3 is suspended by a right angle metal wheel 88 and supported by four Kevlar ropes 5 which are supported by the suspension. A rope net is formed.
As shown in FIG. 4 and FIG. 5 (j), the tip of the electric wire 3 to be moved on the transfer main tower 2 side is held by a kamalong or a clamp, and the electric wire 3 is suspended by the transfer wheel 11 for transfer. The electric wire 3 is moved horizontally through the bridge rope 6 by the mutual operation “exchange” of the wire 77 fed from the wire tower 2 and the transfer destination tower 20.
About the transfer method in a multi-conductor power transmission line, the suspension wheel 10 and the parallel metal wheel 8 of FIG. 5 (a) and FIG. 5 (b) described in [0016] and [0017] of the above (Example 1) are used. by performing the electric wire 3 made of the same work as the suspended work from 2 conductor, the task of suspended and decremental the Tsukinsha 10 from Utsurisen original pylon 2 performed when a single conductor of FIG. 5 (d) and task of suspended in span by feeding the parallel gold wheel 8 suspended the Tsukin wheel 10 (e) are omitted, the supporting Hollow subsequently (f) in FIG. 5 (c) - coupling with flop 5 b - If the annular metal wheel 9 attached to the bracket 4 is disposed between the diameters, the same form as in (g) is obtained, and therefore the description regarding the subsequent steps is omitted.
The perspective view which shows the implementation aspect of the transfer method (net-type hanging type) of this invention. The technique aspect diagram which bridges a bridge rope between the bus-bars in the transfer method (single conductor) of this invention. The transfer electric wire suspension technique state figure by the bridge rope in the transfer method of this invention. The electric wire transfer technique mode diagram by the two-wheel metal wheel for transfer in the transfer method of this invention. Explanatory drawing which shows the procedure of the technique in the transfer method (single conductor) of this invention. II Explanatory drawing which shows the procedure of the technique in the transfer method (double conductor) of this invention. The front view of the hanging wheel used for the transfer method of the present invention. The side view and front view of the two-wheel metal wheel for transfer used for the transfer method of this invention. The front view of the right angle (8-shaped) gold wheel used for the transfer method of this invention. The front view and side view of a ring metal wheel used for the transfer method of the present invention. Fig. 2 is a diagram showing a state in which a wire is transferred by a "exchange" operation of a wire by a conventional transfer method. FIG. 3 is a diagram showing a state in which electric wires are transferred by a moving gold wheel device attached to a parent wire by a conventional transfer method. The perspective view which moves an electric wire with the carrier (carrier) hung on the main rope by the conventional transfer method.
Explanation of symbols
1 existing tower 10 Tsukinsha (single wheel) 2 for 11 transfer line Wakinsha 2 Utsurisen original tower 20 Utsurisen destination towers (new or temporary)
3 Electric wire 4 Connection loop (Kevlar)
5 Support Loop (Kevlar) 55 Support Bus (Kevlar, Article 2)
6 Bridge rope (Kevlar)
7 coasting rope (Kevlar) 77 wire (operating cord)
8 Parallel gold wheel (8-shaped, 2-wheel) 88 Right-angle gold wheel (8-shaped, 2-wheel)
9 Ring metal wheel

Claims (2)

  1. In the construction method in which electric wires ( aerial ground wire and power line ) installed between steel tower diameters of existing transmission lines are moved to new or temporary steel towers located on the side of existing steel towers, After carrying out preparatory work such as disconnecting and temporarily fixing the wires at the main transfer tower, (a) the self-propelled machine is set on the cross-over electric wires at the main transfer tower side. the towed b - connect the flop, lightweight and tough to Tsukin car required number of be set suspended at equal intervals Tsukin vehicles span leading the Tsukin vehicle (b) suspended terminations Kevlar - become more consolidated Russia - a flop support Russia - a flop Shigerugi, required number of parallel 8-shaped gold vehicle (one annular metal car parallel 8-shaped gold wheel coupled in parallel two annular metal car thereto consolidated b - was suspended in wires wearing the flop, supporting the other annular metal cars Russia - gold car that through the flop, hereinafter referred to as parallel gold vehicle) to span (C) The connection rope and the support rope laid in the suspended parallel metal wheel are moved to the transfer destination tower, and the support rope is transferred to the transfer destination tower. Tension and fixing at the side, and the coasting rope on the end of the transfer steel tower side, lay a coasting rope on the end, attach a suspension car with the required floor to hang it on the wire (d) Existing steel tower Annular attached to the connecting rope from the transfer destination tower via the supporting rope while pulling the connecting rope and the supporting rope of the parallel gold car suspended on the side and collecting the gold wheel (E) Pull the coasting rope on the existing steel tower side and pull the suspension car on the existing steel tower side. While collecting, hang a connection rope and a support rope on the end suspension car at the transfer main tower, hang a parallel metal wheel attached to this to the electric wire, and the required number of the same metal wheel between the spans When arranged at regular intervals Supported also Russia - linked to the gold cars terminates in Utsurisen original tower side with the recovery of parallel gold car by tensioned up with existing towers (f) existing tower side B - flop with the support B - a flop Shigeru technique, this support b was mounted at equal intervals required number of annular metal wheel feeding than provided result preparative monitor Utsurisen original tower side span - transferred to Utsurisen destination tower the flop - connecting the profiles After that, the supporting rope is fixed and tensioned on the existing tower side and the transfer destination steel tower side (g) through the support rope stretched between the existing tower and the transfer original tower, The support wheel is mounted between the existing steel tower, the transfer source and the transfer destination steel tower, with the required number of annular gold wheels mounted on the connecting ropes hung between both diameters at equal intervals. -A supporting bus consisting of a loop, a connecting loop and an annular metal wheel is stretched in a V shape. (H) Annular attached to a connecting loop of a supporting bus that is stretched between both diameters on the existing tower side. Between gold wheels A bridge rope (Kevlar) that connects a right angle 8-shaped metal wheel that suspends wires and an annular metal wheel in a state of straddling the supporting bus line through a gold wheel that grows with a bridge cable made of Kevlar. ) Are placed at equal intervals, the connecting ropes are alternately drawn at the transfer source and the transfer destination tower side. (I) The connection ropes are alternately supplied at the transfer source and the transfer destination tower side. bridges while attracted b - number of required the flop, equidistant both span the support bus (supporting b - flop and coupling b - flop) was spanned, which was fixed at the both span towers, suspension wires A suspension rope consisting of a bridge loop and four (two support loops, two connection loops ) Kevlar loops that are attached to a supporting right-angled 8-shaped wheel and connected between both support buses. Forming the net (j) Holding the tip of the wire to be transferred on the transfer line main tower side with a kamalong or clamp and using a 2-wheel metal wheel for transfer The wire is moved horizontally through the bridge rope by “exchange” (winch) of the wire drawn from the transfer source and transfer destination tower (k) The transfer of the electric wire to the transfer destination tower is completed After that, pull the connecting rope of both supporting buses back to the existing tower, remove the right angle wheel and the bridge rope from the electric wire, and complete the relocation (single wire). (L) When changing the electric wire, After the relocation is completed, a wire-type transfer method using a net configuration, in which a new wire is pulled out and replaced while the old wire is suspended from a wire net.
  2. In the method of moving the electric wire (double conductor) installed between the steel tower diameters of the existing power transmission line to a new or temporary steel tower located on the side of the existing steel tower, the removal of the spacers and the relocation section After carrying out preparatory work such as flow-clamping of the electric wires at both ends of the steel tower and disconnection of the electric wires at the transfer main tower and temporary fixing, (a) the distance between the transfer main tower and the span set the self-propelled machine to the inside of the wire and the outer side of the electric wire, to which two towed Russia - connect the flop, hanging at regular intervals Tsukin car 2 Article wires leading the required number Tsukin car (B) Spread the Kevlar connection rope and the support rope on each suspension car suspended from the electric wire, and equip the required number of parallel metal wheels mounted on it with equal spacing. in suspended to it (c) two connecting Russia Shigeru parallel gold car suspended terminations into and out of the wire was - flop with two supporting Russia - outside of the wire of the flop Suspended been tethered parallel gold wheel coupling Russia - flop with the support B - relocated the flop Utsurisen destination tower side, supporting Russia - tense up in Utsurisen destination and the existing tower side, connected with fixed B -Separately connecting a connecting rope to the end of the loop, and arranging the required number of annular gold wheels mounted on it at equal intervals between the diameters via the support loop (d) Of the connecting rope and supporting rope hanged in the suspended parallel metal wheel, the supporting rope is tensioned and fixed at the transfer source and the existing steel tower, and at the end of the connecting rope. Arrange the required number of annular metal wheels mounted on the connecting ropes at regular intervals through the supporting ropes. (E) Transfer line source and transfer destination steel towers on the existing tower side The required number of ring-shaped metal wheels suspended from the support rope via two support ropes that are tensioned and fixed between the two diameters. The A V-shaped supporting bus is installed between the spans. (F) The connecting ropes mounted on the ring-shaped wheel suspended between the two spans on the transfer source and transfer destination towers are alternated. While connecting to the supporting busbars that are stretched between the two diameters on the existing tower side, the annular metal wheels attached to the connecting rope are connected to each other, and the supporting busbars are connected through a right angle gold wheel suspended from the outer wire. (G) While pulling the connecting ropes alternately at the transfer source and transfer destination towers, both bridge loops are required at equal intervals. After laying between the support buses between the spans, the connecting rope is fixed with a steel tower between the two spans, the electric wire is suspended by a gold wheel, and the suspension net consisting of four Kevlar loops is formed. (H) At the transfer main tower side, grip the tip of the outer wire with a kamalong or clamp and Suspend the wire and move the wire horizontally through the bridge loop by “exchange” of the wire drawn from the transfer source and transfer destination tower side. (I) To the transfer destination tower of the outer wire After the relocation is completed, the connecting ropes of both support buses are alternately pulled back to the existing tower, and the right angle wheel and bridge rope are removed from the wires. After the change, after pulling the connection rope alternately between the transfer source and the transfer destination tower, the inner wire is transferred by the technique and procedure according to the above (f) to (h), and the double conductor Completing the transfer (j) In case of changing the wire, after each transfer is completed, the old wire is hung on the wire net, and the new wire is pulled out and replaced. Hanging wire type transfer method by net formation.
JP2004180309A 2004-05-20 2004-05-20 Hanging wire type transfer method by net formation Expired - Fee Related JP4277281B2 (en)

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CN102780178A (en) * 2012-07-19 2012-11-14 嘉善县供电局 Obstacle bridging construction method for power line wiring and wiring pulleys
CN109142951A (en) * 2018-08-08 2019-01-04 成都保源酷码科技有限公司 The safety detection method that ground wire mounts during a kind of electric operating

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JP5883729B2 (en) * 2012-06-18 2016-03-15 中国電力株式会社 Overhead work method and support net
KR101557193B1 (en) 2013-07-23 2015-10-02 (주) 창흥전력 Shifting of electric wire method this used length extension device of electric wire
CN103707293B (en) * 2013-12-12 2015-08-05 桂林电子科技大学 Emulation row Wire walking robot
CN104577875A (en) * 2014-12-29 2015-04-29 国家电网公司 Construction method of block crossover frame cable of power circuit
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CN102780178A (en) * 2012-07-19 2012-11-14 嘉善县供电局 Obstacle bridging construction method for power line wiring and wiring pulleys
CN109142951A (en) * 2018-08-08 2019-01-04 成都保源酷码科技有限公司 The safety detection method that ground wire mounts during a kind of electric operating
CN109142951B (en) * 2018-08-08 2020-12-04 成都保源酷码科技有限公司 Safety detection method for ground wire hanging connection in electric power operation process

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