JP2005333789A - Construction method of hanging sheave type line shifting by forming net - Google Patents
Construction method of hanging sheave type line shifting by forming net Download PDFInfo
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Abstract
Description
本発明は、既設鉄塔間に張設された電線(架空地線および電力線)を既設鉄塔の側方に位置する新設あるいは仮設鉄塔に移線する電線の移設および張替えに係わる工法であり、特に移線時に発生する電線の弛度変動を抑制する移設工法に関する。 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.
従来の移線工法に関する公知技術としては、一般的に、移線元鉄塔において両径間に張架されている電線を塔体に引留めて切断した後、割線を接続した移設用電線の先端部にカマロングを取付けて電線を掴持し、そのカマロングに2組のセミ金車を接続して移線元と移線先鉄塔より繰り出された取込みワイヤロ−プを接続し、図10に示すように、双方のワイヤの「やりとり」により電線を空中移送する工法が行われている。 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 Camalong is attached to the part and the electric wire is gripped, and two sets of semi-gold cars are connected to the Camalong, and the transfer wire rope fed 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.
また、図11に示すように、移線元と移線先鉄塔間に親ワイヤを張設し、そのワイヤに移動可能な2輪滑車を掛け、その滑車に電線を懸架する架線用金車を吊設した移線装置の2輪滑車を移線先に移動させて電線を移送するもので最初、塔体の上部に取付けたワイヤを順次、下部に移し替えることで上線〜下線を移線する「スライド移線工法」がある。 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”.
そのほか、図12に示すように、移線元と移線先鉄塔の塔頂部間に張設した主索に搬機を掛け、これに架線用金車を吊設した運搬装置により移送中の電線の垂れ下がりを調整しながら移線する工法で、主索を移し替えすることなく上線〜下線を移線するとことのほか、吊設した運搬装置によって工事用資機材(ア−ム材、架線用資材、工具等)の荷揚げ荷下げ作業を並行して行うことができる「電線の移線工法」が開示されている。
しかし、図10の一般工法は、割線を挿入した一連の電線の垂れ下りを防ぐために移線元と移線先鉄塔から繰り出す2本のワイヤロ−プの「やりとり」に微妙な操作技能が必要で、熟練者でなければ移線作業の安全遂行が難しいことから線下保安対策として、防護足場やネットを設置するほか監視員を多く配置する必要があるなど作業性に問題があった。 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.
また、図11の移線装置による「スライド移線工法」も、架線用金車に懸架した移送中の電線を上下(垂直方向)に変位させることができない装置のため電線の実長増や支持点高低差が大きい場合に発生する電線の垂れ込みの増加現象を抑制することが難かしいため、移線元と移線先鉄塔から繰り出す補助ワイヤロ−プにより垂れ込みを抑制する作業を行うとともに垂れ込む電線の線下横過工作物との接近、接触を回避する方策として線下に保護網や足場を設置するなど保安対策が必要なことから、その作業の安全性に問題があった。 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.
また、図12の搬機による「電線の移線工法」においては、搬機(キャリア)を使用して移線中の電線の弛度の変動(上下に変位)を抑制することで、従来の補助ワイヤによる「やりとり」操作や、線下保安対策(保護網、足場等の構築)問題を解消したが、移送中の電線の変位状況の監視、連絡とウインチによる運転操作との連携作業を的確に実施することが要求されるほか、2径間に繋がる一連の長い電線の中間部を架線金車によって懸架(一点支持)した状態で移設電線を上下に変位させながら移送するので、万一、移送中に横風が発生した場合、電線の横揺れのほか移線する両径間の弛度の不揃い(長径間側に電線が流れて垂れ込む状態)が予想され、その電線が線下横過工作物に接近する虞があることなど万全な移線工法とは言えない。 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.
本発明が解決しようとする課題は、従来の移線工法における移設中の電線の垂れ込みに関する対応策を究明して、これを抜本的に解消することであり、線下に保安用の防護施設を設けることなく、また、万一、移線作業中に強風が発生したりワイヤの破損あるいは操作ミスなど不測の事態が起きた場合でも懸吊された電線が横振れしたり摺動したり脱落したりすることなく、安全、確実に移線することができる工法を確立するものである。 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.
上記の課題を解決するための手段として、(1)電線を懸吊するロ−プは、軽量で強靱なケブラ−を使う。(2)移線元鉄塔で電線を切り離して仮留め後、等間隔に吊設した吊金車に電線を懸吊(支持)して移説する。(3)既設鉄塔から移線元と移線先鉄塔の両径間に電線を支持する母線(支持ロ−プと連結ロ−プと吊金車)を張設する。(4)両母線の支持ロ−プに連結ロ−プにより吊設した吊金車間を連結する橋架ロ−プを横設する。(5)両母線の吊金車と電線を懸吊する吊金車とを橋架ロ−プにより連係する吊金ネットを形設する。(6)両支持母線を緊張し、等間隔に吊設の吊金車に懸架した電線の水平張力を緩和する。(7)電線を掴持する金具に移線元と移線先鉄塔から繰り出すワイヤを繋ぎ、電線を橋架ロ−プに沿って水平移動させて移線先鉄塔側に引寄せる。(8)移線先鉄塔側において電線実長の増分(割線)を接続することなどを主要な技法とする。 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 suspended (supported) on a suspension wheel suspended at equal intervals, and then 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 the suspension wheel of both buses and the suspension wheel for suspending the electric wire by a bridge rope is formed. (6) Tensioning both supporting buses 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.
本発明の工法は、移線前に割線の挿入を行わず、移線先において所要長の電線を接続するため、移設にともなう電線実長の増加によって発生する弛度増加現象が抑制される。 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.
両径間の支持母線に吊設の吊金車と電線を懸吊する吊金車とを多数、等間隔に配設して橋架ロ−プを連係することにより電線の支持径間が等分布化(短径間)され、電線の水平張力が緩和されるとともに各吊金車間の電線の垂れ下がりが抑制(小弛度化)される。 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 wire is relaxed, and the drooping of the electric wire between the suspension wheels is suppressed (small sag).
両径間に張設し、形設するネットが軽量、強靱なケブラ−ロ−プの支持母線(4条)と横設する橋架ロ−プ(1条)よりなるため、径間の負荷荷重が小さく、二重防護的役割を持つので万一、電線移送中にロ−プの破損や横風や操作ミスなど不具合が発生しても、電線の横振れ、垂れ込み、滑脱等の不測の事態が発生しないので安全性に富んでいる。 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.
この事から、移設径間の線下の横過工作物との接近、接触を防止するための保護足場や防護ネットといった仮設備を構設する必要がないので地域環境対応費が低減する。 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.
吊金ネットを形設するために使用する材料、工具類は全て現有する在来品で、本工法用に特別の資材、工具を製作、使用する必要がないので経済的であり環境対応費を含めた総工事費の大幅な低減に寄与することなど多くの利点と効果を奏する。 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.
以下、本発明の実施の形態を図面を参照して説明する。図2〜5は、架空送電線におけ径間電線の移線工法の技法と手順の概要を示すもので、移線に当たっては、移設区間の両端鉄塔での架設電線の流し留めおよび移設元鉄塔での電線の切離して仮留めした後、 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
図2(a)のように移線元鉄塔2側で、既設鉄塔1側の径間の電線3に自走機をセットし、これに曳行ロープ7を繋ぎ、所要数の吊金車10(図6)を牽引して当該径間に吊金車10を等間隔で吊設する。 As shown in FIG. 2 (a), on the transfer
図2(b)のように曳行ロープ7の末端の吊金車10に連結ロ−プ4と支持ロ−プ5を繋ぎ、これに所要数の平行金車8(図9の環状金車9を2個平行連結した8字形の2輪金車で、一方の環状金車9に連結ロ−プ4を装着して電線3に懸吊し、他方の環状金車9に支持ロ−プ5を通す)を径間に等間隔で吊設する。 As shown in FIG. 2 (b), the connecting rope 4 and the support rope 5 are connected to the
図2(c)のように径間に吊設された終端の平行金車8に繋がれた連結ロ−プ4と支持ロ−プ5を移線元鉄搭2側に移設し、支持ロ−プ5を移線先鉄塔20側で張設、固定するするとともに移線元2鉄塔側で終端の平行金車8に曳行ロ−プ7を繋ぎ、これに所要数の吊金車10を装着して電線3に吊設する。 As shown in FIG. 2C, the connection rope 4 and the support rope 5 connected to the end parallel metal wheel 8 suspended between the diameters are moved to the
図2(d)のように既設鉄塔1側で径間に吊設した平行金車8に繋いだ連結ロ−プ4と支持ロ−プ5を引寄せて同金車8を回収しながら移線先鉄搭20側より支持ロープ5を介して連結ロ−プ4に装着の環状金車9を径間に配設するとともに移線元鉄塔2側より電線3を介して曳行ロ−プ7に装着の所要数の吊金車10を等間隔で径間に吊設する。 As shown in FIG. 2 (d), the connecting rope 4 and the support rope 5 connected to the parallel gold wheel 8 suspended between the spans on the existing
図2(e)のように既設鉄搭1側で曳行ロ−プ7を引寄せて吊金車10を回収しながら移線元鉄塔2側で終端の吊金車10に連結ロ−プ4と支持ロ−プ5を繋ぎ、これに装着の平行金車8を電線3に吊設して径間に同金車8を所要数、等間隔で配設するとともに支持ロ−プ5を既設鉄塔1で緊張する。 As shown in FIG. 2 (e), the rope 4 connected to the
図2(f)既設鉄搭1側で平行金車8を回収するとともに終端の同金車8に連結ロープ4をと支持ロ−プ5を繋ぎ、これに所要数の環状金車9を等間隔に装着して径間に配設した後、支持ロ−プ5を既設鉄塔1と移線先鉄塔20にて緊張、固定する。 FIG. 2 (f) collects the parallel metal wheel 8 on the existing
図2(g)のように既設鉄搭1と移線元鉄塔2および移線先鉄塔20の両径間間に張設された支持ロ−プ5を介して、それぞれ連結ロープ4に装着された環状金車9を所要数、等間隔で両径間に吊、配設し、支持ロ−プ5と連結ロ−プ4と環状金車9よりなる支持母線55をV字状に張設する。 As shown in FIG. 2 (g), each is attached to the connecting rope 4 via a support rope 5 stretched between both diameters of the existing
図2(h)と図3のように既設鉄塔1側で両径間に張設された支持母線55の連結ロ−プ4に装着の環状金車9間を繋ぐとともに電線3に吊設した直角金車88(図8の環状金車92個を直角に連結した8字形の2輪金車)を通して支持母線55間を連結する橋架ロ−プ6を等間隔で横設するため、移線元2と移線先鉄塔20側で連結ロープ4を交互に引寄せる。 As shown in FIG. 2 (h) and FIG. 3, the annular metal wheel 9 attached to the connecting rope 4 of the
図2(i)のように移線元鉄塔2と移線先鉄塔20側で連結ロ−プ4を交互に引寄せながら橋架ロ−プ6を所要数、等間隔で両径間の支持母線55を跨ぐ状態で架設した後、連結ロ−プ4を両径間の鉄塔で固定し、電線3を直角金車88によって懸吊、支持するケブラーロ−プ5が4本よりなる吊金用ロ−プネットを形設する。 As shown in FIG. 2 (i), the supporting buses between the two diameters at the same number of bridge ropes 6 are drawn while pulling the connecting ropes 4 alternately on the
図4と図2(j)のように移線元鉄塔2側で移設する電線3の先端部をカマロングまたはクランプによって掴持するとともに移線用2輪金車11により電線3を懸架し、移線元2と移線先鉄搭20より繰り出すワイヤ77の相互操作「やりとり」により電線3を橋架ロ−プ6を介して水平移行する。 As shown in FIG. 4 and FIG. 2 (j), the tip of the
複導体送電線での移線工法については、前記(実施例1)の(a)(b)で実施する吊金車10および平行金車8の吊設作業を2本の電線3について同時に行えば(d)(e)の移線元鉄塔2より繰り出す吊金車10と平行金車8の吊設作業が省略され、(c)に引続き(f)の移線元鉄塔2より支持ロ−プ5と連結ロ−プ4に装着の環状金車9を径間に配設すれば(g)と同じ形態となるので、それ以降の手順に関する記述を省略する。 As for the transfer method for the multi-conductor transmission line, the suspension work of the
1 既設鉄塔 10 吊金車(単輪)
2 移線元鉄塔 20 移線先鉄塔(新設又は仮設)
3 電線
4 連結ロ−プ(ケブラ−)
5 支持ロ−プ(ケブラ−) 55 支持母線(ケブラ−、2条)
6 橋架ロ−プ(ケブラ−)
7 曳行ロ−プ(ナイロン) 77 ワイヤ(操作索)
8 平行金車(8字形、2輪) 88 直角金車(8字形、2輪)
9 環状金車1 Existing
2 Transfer
3 Electric wire 4 Connection loop (Kevlar)
5 Support Loop (Kevlar) 55 Support Bus (Kevlar, Article 2)
6 Bridge rope (Kevlar)
7 coasting rope (nylon) 77 wire (operation cord)
8 Parallel gold wheel (8-shaped, 2-wheel) 88 Right-angle gold wheel (8-shaped, 2-wheel)
9 Ring metal wheel
Claims (2)
(a)移線元鉄塔側で径間の電線に自走機をセットし、これに曳行ロ−プを繋ぎ、所要数
の吊金車を牽引して径間に吊金車を等間隔で吊設すること
(b)吊設された吊金車に軽量かつ強靱なケブラ−よりなる連結ロ−プと支持ロ−プを繋
ぎ、これに所要数の平行8字形金車(環状金車2個を平行に連結して一方に連結ロ−プ
を装着して電線に懸吊し、他方に支持ロ−プを通す金車で、平行金車という)を径間に
等間隔で吊設すること
(c)吊設された終端の平行金車に繋がれた連結ロ−プと支持ロ−プを移線先鉄塔に移設
し、支持ロ−プを移線先鉄塔側で緊張、固定するとともに移線元鉄塔側で終端の平行金
車に曳行ロ−プを繋ぎ、これに所要数の吊金車を装着して電線に吊設すること
(d)既設鉄塔側で吊設された平行金車の連結ロ−プと支持ロ−プを引寄せて同金車を回
収しながら移線先鉄塔より支持ロ−プを介して連結ロ−プに装着の環状金車を径間に配
設するとともに移線元鉄塔より電線に吊金車を所要数、等間隔で吊設すること
(e)既設鉄塔側で曳行ロ−プを引寄せて吊金車を回収しながら移線元鉄塔で終端の吊金
車に連結ロ−プと支持ロ−プを繋ぎ、これに装着の平行金車を電線に吊設して径間に同
金車を所要数、等間隔で配設するとともに支持ロ−プを既設鉄塔で緊張すること
(f)既設鉄塔側で平行金車を回収するとともに終端の同金車に連結ロ−プと支持ロ−プ
を繋ぎ、これに所要数の環状金車を等間隔に装着して径間に配設した後、支持ロ−プを
既設鉄塔と移線元鉄塔にて緊張、固定すること
(g)既設鉄塔と移設元および移線先鉄塔との両径間に張設された支持ロ−プを介して、
それぞれの連結ロ−プに装着された環状金車を所要数、等間隔で両径間に吊、配設し、
支持ロ−プと連結ロ−プと環状金車よりなる支持母線をV字状に張設すること
(h)既設鉄塔側で両径間に張設された支持母線の連結ロ−プに装着の環状金車間を繋ぐ
とともに電線を懸吊する直角8字形金車(環状金車2個を直角に連結した金車で、直角
金車という)を通して支持母線間を跨ぐ状態で連結する橋架ロ−プ(ケブラ−)を等間
隔に横設するため、移線元と移線先鉄塔側で連結ロ−プを交互に引寄せること
(i)移線元と移線先鉄塔側で連結ロ−プを交互に引き寄せながら橋架ロ−プを所要数、
等間隔で両径間の支持母線に架設した後、連結ロ−プを両径間の鉄塔で固定し、電線を
金車により懸吊、支持するケブラ−ロ−プが4本よりなる吊金ネットを形設すること
(j)移線元鉄塔側で移設する電線の先端部をカマロングまたはクランプによって掴持す
るとともに移線用2輪金車により電線を懸架し、移設元と移線先鉄塔より繰出すワイヤ
の「やりとり」(ウインチ)により電線を橋架ロ−プを介して水平移設すること
(k)電線の移線先鉄塔への移設が完了した後、両支持母線の連結ロ−プを既設鉄塔側に
引戻して直角金車と橋架ロ−プを電線より取外して移設(単線)を完了すること
(l)電線の張替えを行う場合は、移設が完了した後、吊金ネットに古い電線が懸吊され
た状態で、新しい電線を繋いで引抜き交換することなどを特徴とするネット形設による吊金式移線工法。In the construction method of moving an electric wire (single conductor) installed between the tower diameters of an existing transmission line to a new or temporary tower located on the side of the existing tower, the flow of the electric wire at both ends of the transfer section and the source of the transfer After preparatory work such as disconnecting and temporarily fixing the wires on the steel tower, set the self-propelled machine on the wire between the spans on the side of the transfer tower (a) -Connect the hooks and pull the required number of suspension wheels and suspend the suspension wheels between the spans at equal intervals. (B) A connecting rod consisting of a lightweight and strong kevlar on the suspended suspension wheels. -Connect the loop and the support rope, and connect to this with the required number of parallel 8-shaped wheels (two annular wheels are connected in parallel and connected to one side and attached to the wire and suspended on the other side. (C) A metal wheel that passes through a support rope, and is suspended at equal intervals between the diameters. (C) A chain connected to the suspended parallel metal wheel. The connection rope and the support rope are moved to the transfer destination tower, and the support rope is tightened and fixed on the transfer destination tower side, and the coasting rope is fixed to the terminal parallel wheel on the transfer tower side. (D) Attach the connecting rope and the support rope of the parallel metal wheel suspended on the existing steel tower side. While collecting the gold wheel, arrange the ring-shaped metal wheel attached to the connecting rope from the transfer destination tower via the support rope and the required number of suspension cars on the electric wire from the transfer main tower. (E) Attach the coasting lop on the existing tower side and collect the suspension car while collecting the suspension car. (F) Existing steel towers are suspended by suspending parallel metal wheels mounted on the wires, arranging the same number of gold wheels between the spans at equal intervals, and tensioning the support loops with the existing steel towers. On the side After collecting the bank car and connecting the connecting rope and the support rope to the terminal car, the required number of ring metal wheels are mounted at equal intervals and arranged in the span, and then the support rope is installed. -Tighten and fix the loop between the existing tower and the transfer main tower (g) via a support loop stretched between both diameters of the existing tower, the transfer source and the transfer destination tower,
The required number of annular gold wheels mounted on each connecting rope are hung between both diameters at equal intervals.
A support bus consisting of a support rope, a connection rope, and an annular metal wheel is stretched in a V-shape. (H) Attached to a connection loop of a support bus stretched between both diameters on the existing steel tower side. Bridge wheel that connects between the supporting buses through a right-angled eight-shaped metal wheel (a two-wheeled metal wheel connected at right angles, called a right-angled metal wheel) that connects the two metal wheels and hangs the wires. In order to place the loops (kevlar) at regular intervals, draw the connecting ropes alternately on the transfer source and transfer destination tower side. (I) Connect the connection ropes on the transfer source and transfer destination tower side. -The required number of bridge ropes while pulling alternately,
After laying on the supporting bus between the two diameters at equal intervals, the connecting rope is fixed with a steel tower between the two diameters, the electric wire is suspended by a gold wheel, and the kevlar rope that supports the four kevlar ropes is supported. Forming the net (j) Holding the tip of the wire to be transferred on the transfer tower side with a kamalong or clamp and suspending the wire with a 2-wheel metal wheel for transfer, the transfer source and transfer destination To move the wires horizontally through the bridge rope by the “exchange” (winch) of the wire delivered from the tower (k) After the transfer of the wires to the destination tower is completed, connect the support buses of both support buses Pull the cable back to the existing tower and remove the right angle metal wheel and the bridge rope from the electric wire to complete the relocation (single wire). (L) When repositioning the electric wire, With the old wires suspended, connect and replace the new wires Tsukin formula Utsurisen method by net-shaped set, wherein etc..
(a)移線元鉄塔側で径間の電線(内外)に自走機をセットし、これに2本の曳行ロ−プ
を繋ぎ、所要数の吊金車を牽引して電線2条に吊金車を等間隔で吊設すること
(b)電線に吊設されたそれぞれの吊金車にケブラ−の連結ロ−プと支持ロ−プを繋ぎ、
これに装着した所要数の平行金車を径間に等間隔で吊設すること
(c)内外の電線に吊設された終端の平行金車に繋がれた連結ロ−プと支持ロ−プの外側
の連結ロ−プと支持ロ−プを移線先鉄塔側に移設し、支持ロープを移線先と既設鉄塔側
で緊張、固定するとともに連結ロ−プの端末に別途、連結ロ−プを繋いで、これに装着
した所要数の環状金車を支持ロ−プを介して径間に等間隔で配設するとこと
(d)内側の電線に吊設された終端の平行金車に繋がれた連結ロ−プと支持ロ−プのうち
支持ロ−プを移線元と既設鉄塔側で緊張、固定するとともに連結ロ−プの末端に連結ロ
−プを繋いでこれに装着した所要数の環状金車を支持ロ−プを介して径間に等間隔で配
設すること
(e)既設鉄塔側で移線元と移線先鉄塔との両径間に架設された連結ロ−プを引き寄せ、
両径間に緊張、固定された2本の支持ロ−プを介して支持ロープに吊設された所要数の
環状金車を両径間に配設してV字状の支持母線を張設すること
(f)移線元と移線先鉄搭側で両径間に吊設した環状金車に装着の連結ロ−プを交互に引
き寄せながら既設鉄塔側で両径間に張設された支持母線の連結ロ−プに装着の環状金車
間を繋ぐとともに外側の電線に懸吊した直角金車を通して支持母線間を跨ぐ状態で連結
する橋架ロ−プを所要数、等間隔に横設すること
(g)移線元と移線先鉄塔側で連結ロ−プを交互に引き寄せながら橋架ロ−プを所要数、
等間隔で両径間の支持母線間に架設した後、連結ロ−プを両径間の鉄塔で固定し、電線
を金車により懸吊、支持するケブラ−ロ−プが4本よりなる吊金ネットを形設すること(h)移線元鉄塔側で外側の電線の先端部をカマロングまたはクランプによって掴持する
とともに移線用2輪金車によって電線を懸架し、移線元と移線先鉄塔側より繰出すワイ
ヤの「やりとり」により電線を橋架ロ−プを介して水平移設すること
(i)外側の電線の移線先鉄塔への移設が完了した後、両支持母線の連結ロ−プを交互に
既設鉄塔側に引戻して直角金車と橋架ロ−プを電線より取外し、直角金車と橋架ロ−プ
を内側の電線に掛け変えた後、移設元と移設先鉄塔で連結ロープを交互に引寄せた後、
前記(f)〜(h)に準じた技法、手順により内側の電線を移線して複導体の移線を完
了する
(j)電線の張替えを行う場合は、それぞれの移設が完了した後、古い電線が吊金ネット
に懸吊された状態で、新しい電線を繋いで引抜き交換することなどを特徴とするネット形設による吊金式移線工法。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 the preparatory work such as the flow of the electric wire at both ends of the steel tower and the disconnection of the electric wire at the transfer main tower and temporary fixing, (a) the span on the transfer main tower side Set a self-propelled machine on the electric wire (inside and outside), connect two coasting ropes to it, pull the required number of suspension wheels, and suspend the suspension wheels on the two wires at equal intervals ( b) Connect the Kevlar connecting rope and the supporting rope to each suspension wheel suspended from the electric wire,
(C) A connecting rope and a supporting rope connected to a terminal parallel metal wheel suspended from the inner and outer electric wires. The connection rope and the support rope outside are moved to the transfer destination tower side, and the support rope is tensioned and fixed at the transfer destination and the existing steel tower side, and the connection rope is connected to the end of the connection rope separately. (D) To the end parallel metal wheel suspended from the inner wire, the required number of annular metal wheels attached to this are arranged at equal intervals through the support loop. Of the connected ropes and support ropes, the support ropes were tensioned and fixed at the transfer source and the existing tower, and attached to the end of the linkage rope. Install the required number of annular metal wheels at equal intervals across the span via the support loop. (E) The existing steel tower will be installed between the diameters of the transfer source and transfer destination towers. Was consolidated Russia - attracted a flop,
A V-shaped support bus is stretched by arranging the required number of annular metal wheels suspended between two diameters via two support ropes that are tensioned and fixed between both diameters. (F) Tensioning between the two diameters on the existing steel tower side while pulling alternately the connecting rope attached to the ring metal wheel suspended between both diameters at the transfer source and transfer destination steel tower side The required number of bridge loops are connected at equal intervals to connect the annular metal wheels attached to the connected support bus connecting loops and connect them between the supporting buses through a right angle metal wheel suspended from the outer wire. (G) Necessary number of bridge ropes while pulling connection ropes alternately at the transfer source and transfer destination towers,
After laying between the support buses of both diameters at equal intervals, the connection rope is fixed with a steel tower between both diameters, the wire is suspended by a gold wheel, and the kevlar rope that supports the suspension is composed of four pieces. Forming a gold net (h) Hold the tip of the outer wire on the side of the transfer main tower with a kamalong or clamp, and suspend the wire with a two-wheeled metal wheel for transfer, and transfer source and transfer (I) After the transfer of the outer wires to the transfer tower has been completed, connect the two supporting bus bars after the wires have been transferred horizontally through the bridge rope. Alternately pull the rope back to the existing tower, remove the right angle metal wheel and the bridge rope from the electric wire, change the right angle metal wheel and the bridge rope to the inner wire, and then relocate them at the source and destination steel towers. After pulling the connecting rope alternately,
(J) Complete the transfer of the multiconductor by transferring the inner wire using the technique and procedure according to the above (f) to (h). A wire-type transfer method using a net configuration, in which an old wire is suspended on a wire net, and a new wire is connected and pulled out.
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JP2014003798A (en) * | 2012-06-18 | 2014-01-09 | Chugoku Electric Power Co Inc:The | Wiring work method and support net |
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