JP2008148424A - Method of replacing insulator string - Google Patents

Method of replacing insulator string Download PDF

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JP2008148424A
JP2008148424A JP2006331684A JP2006331684A JP2008148424A JP 2008148424 A JP2008148424 A JP 2008148424A JP 2006331684 A JP2006331684 A JP 2006331684A JP 2006331684 A JP2006331684 A JP 2006331684A JP 2008148424 A JP2008148424 A JP 2008148424A
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insulator
series
lever
suspended
frame
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JP3996624B1 (en
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Tsutomu Orino
務 折野
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ORINO DENSETSU KK
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ORINO DENSETSU KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a replacement method which can shorten the replacement work of an insulator string. <P>SOLUTION: This replacement method provides for an insulator string 4 where both ends of a bus 3 are stretched via a pair of V-shaped insulator strings 4 and 4 between beams 2 and 2, one end of each insulator string 4 is connected with a beam 2, and the other end is coupled with an anchor 8 coupled with the end of the bus 3. First, tension wires 19 for work are stretched between the beam-side ends of both V-shaped insulator strings 4 and 4 and the beams; an insulator 18 is attached to the beam-side end of one insulator string 4 and hung on the short foot lever 13 of an insulator string hanging frame 10 hoisted by a crane K; and an insulator replacer 18 is attached to a bus-side end and hung on a long foot lever 14. The insulator string is laid down on the ground with both ends of a new insulator string 4 hung to an insulator string frame 10. Then, the new insulator string 4 is hung to the insulator string hanging frame 10 and hoisted by the crane K; the bus-side end of the new insulator string 4 is connected with the hanger 8 with a bolt 9, the tension wire 19 for work is stretched between the beam-side end and the beam 2, the beam-side end is connected with the beam 2, and the insulator string hanging frame 10 is removed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、対向するビーム間に母線の両端部が平面視Ｖ字形の一対の碍子連（２個以上の碍子を直列に連結して可撓性をもたせて構成された一連の碍子）を介して張架されている変電所において、古くなったり破損したりして使用できなくなった、又はこれ以上使用するのが好ましくなくなった碍子連を取り替える方法に関するもので、特に重量が例えば５００ｋｇといった大型の碍子連を取り替えるのに好適な取替方法に関する。   According to the present invention, a pair of insulators (a series of insulators configured to have flexibility by connecting two or more insulators in series) whose opposite ends of the bus bar are V-shaped in plan view between the opposing beams. This is related to a method for replacing an insulator that has become unusable due to aging or damage, or that is no longer desirable to use, especially with a large weight of, for example, 500 kg. The present invention relates to a replacement method suitable for replacing the reed chain.

従来の碍子連の取替方法として特許公報等の具体的な公知文献を挙げることはできないが、従来、碍子連を取り替えるのに、取り替えるべき碍子連に碍子交換具を取り付けて、この碍子交換具をクレーンのフックで直接吊り上げるという方法を採っていたことから、１つの碍子連に対する碍子交換具の取付け・取外しを何回も行なう必要があって、高所での作業能率が悪く、碍子連の取替えに非常な手間と時間がかかっていた。   Although it is not possible to list specific publicly known documents such as patent gazettes as a conventional method for replacing the insulator series, in order to replace the insulator series, an insulator exchanger is attached to the insulator series to be replaced. The crane is directly lifted by the hook of the crane, and it is necessary to install and remove the insulator changer for one insulator series several times, and the work efficiency at high places is poor. It took a lot of time and effort to replace it.

本発明は、碍子連の取替作業の短縮化を図ることができ、特に大型の碍子連を取り替えるのに好適な取替方法を提供することを目的とする。   It is an object of the present invention to provide a replacement method that can shorten the replacement work of the insulator series and is particularly suitable for replacing a large insulator series.

上記課題を解決するための手段を、後述する実施形態の参照番号を付して説明すると、請求項１に係る発明は、変電所において対向するビーム２，２間に母線３の両端部が夫々平面視Ｖ字形に配置される一対の碍子連４，４を介して張架され、各碍子連４の一端部はビーム２にボルト６，７で繋がれ、その他端部は母線３の端部に連結された引止金具８にボルト９で繋がれている碍子連４の取替方法であって、
下部側の水平材１１と上部側の長さの等しい２つの斜材１２，１２とを三角形に組み付ける共に、水平材１１の両端部に長さの長短異なる脚杆１３，１４を垂下連結してなる碍子連吊り枠体１０を設けておいて、先ず、Ｖ字形の両碍子連４，４の夫々ビーム側端部とビームとの間に夫々作業用緊張ワイヤー１９を張架し、この状態で、Ｖ字形の何れか一方の碍子連４のビーム側端部に碍子交換具１８を取り付けて、クレーンＫで吊り上げた碍子連吊り枠体１０の短い方の脚杆１３に吊支すると共に、同碍子連４の母線側端部に碍子交換具１８を取り付けて、長い方の脚杆１４に吊支し、その後、この碍子連４の両端部をビーム２及び引止金具８から切り離して、碍子連吊り枠体１０で吊支したまま地上に下ろして取り外した後、新しい碍子連４を碍子連吊り枠体１０に上記同様に吊支してクレーンＫで吊り上げ、新しい碍子連４の母線側端部を引止金具８にボルト９で繋ぎ、そのビーム側端部とビーム２の間に作業用緊張ワイヤー１９を張架した後、このビーム側端部をビーム２にボルト６，７で繋ぎ、碍子連吊り枠体１０を外すことによって、Ｖ字形の何れか一方の碍子連４を取り替えるようにしたことを特徴とする。 Means for solving the above problems will be described with reference numerals of the embodiments described later. In the invention according to claim 1, both end portions of the bus bar 3 are arranged between the beams 2 and 2 facing each other in the substation. It is stretched through a pair of insulators 4 and 4 arranged in a V shape in plan view. One end of each insulator 4 is connected to the beam 2 by bolts 6 and 7, and the other end is the end of the bus 3. A method for replacing the insulator series 4 connected to the retaining bracket 8 connected to the
The lower horizontal member 11 and two diagonal members 12, 12 having the same length on the upper side are assembled into a triangle, and leg rods 13, 14 having different lengths are suspended from both ends of the horizontal member 11. First, the work tension wires 19 are stretched between the beam-side end portions of the V-shaped two-piece lever trains 4 and 4 and the beam. , A lever changer 18 is attached to the beam side end of one of the V-shaped lever trains 4 and is suspended on the shorter leg rod 13 of the lever frame suspension frame 10 lifted by the crane K. An insulator changer 18 is attached to the end of the insulator series 4 on the bus bar side, and is suspended on the longer leg rod 14, and then both ends of the insulator series 4 are separated from the beam 2 and the retaining bracket 8, After hanging down with the continuous frame 10 and removing it from the ground, a new insulator series Is suspended on the insulator frame 10 in the same manner as described above and lifted by the crane K, and the bus-side end of the new insulator 4 is connected to the retaining bracket 8 with a bolt 9 between the beam-side end and the beam 2. After the working tension wire 19 is stretched, the beam side end is connected to the beam 2 with bolts 6 and 7 and the insulator continuous suspension frame 10 is removed, so that one of the V-shaped insulator trains 4 is connected. It is characterized by being replaced.

請求項２は、請求項１に記載の碍子連の取替方法において、碍子連吊り枠体１０の水平材１１には両脚杆１３，１４の間に吊支用ロープ１７を所定間隔おきに複数垂下しておいて、碍子連４の両端部を夫々碍子交換具１８を介して水平材１１の両脚杆１３，１４に吊支する時に、上記吊支用ロープ１７で碍子連４の中間部を吊支するようにしたことを特徴とする。   According to a second aspect of the present invention, there is provided a method for replacing the lever series according to the first aspect, wherein the horizontal member 11 of the lever continuous suspension frame 10 includes a plurality of suspension ropes 17 between the leg rods 13 and 14 at predetermined intervals. When the both ends of the insulator series 4 are suspended from both leg rods 13 and 14 of the horizontal member 11 via the insulator changer 18, the intermediate portion of the insulator series 4 is moved by the suspension rope 17. It is characterized by being suspended.

請求項３は、請求項１又は２に記載の碍子連の取替方法において、作業用緊張ワイヤー１９には張線器２０を介装していることを特徴とする。   A third aspect of the present invention is characterized in that, in the method for replacing the lever series according to the first or second aspect, a tensioner 19 is interposed in the work tension wire 19.

上記解決手段による発明の効果を、後述する実施形態の参照番号を付して説明すると、請求項１に係る発明によれば、従来の取替方法に比べると、碍子連の取替作業を大幅に短縮することができる。特に本発明の取替方法は、碍子連吊り枠体１０を使用するもので、Ｖ字形の両碍子連４，４の夫々ビーム側端部とビームとの間に夫々作業用緊張ワイヤー１９を張架した状態で、Ｖ字形の何れか一方の碍子連４のビーム側端部に碍子交換具１８を取り付けて、クレーンＫで吊り上げた碍子連吊り枠体１０の短い方の脚杆１３に吊支すると共に、同碍子連４の母線側端部に碍子交換具１８を取り付けて長い方の脚杆１４に吊支ようにするから、古い碍子連４の両端部をビーム２及び引止金具８から取り外し時には、この古い碍子連４を、設置時と同じ姿勢・位置に碍子連吊り枠体１０によって吊支でき、また新しい碍子連４を取り付ける時も、新しい碍子連４を、設置時と同じ姿勢・位置に碍子連吊り枠体１０によって吊支でき、これにより碍子連４の両端部のボルト６，７及び９の取外し及び取付け作業を容易に行なうことができ、従って例えば５００ｋｇというような大型の碍子連を取り替えるのに好適となる。   The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. According to the invention according to claim 1, the replacement work of the insulator series is greatly increased as compared with the conventional replacement method. Can be shortened. In particular, the replacement method of the present invention uses the insulator frame 10 and tensions the working tension wires 19 between the beam side ends of the V-shaped insulators 4 and 4 and the beam. In the suspended state, a lever changer 18 is attached to the beam side end of one of the V-shaped lever trains 4 and suspended on the shorter leg rod 13 of the lever frame suspension frame 10 lifted by the crane K. At the same time, since an insulator changer 18 is attached to the end of the same lever series 4 on the side of the bus bar, it is suspended from the longer leg rod 14, so that both ends of the old insulator series 4 are connected to the beam 2 and the retaining bracket 8. At the time of removal, this old insulator series 4 can be suspended by the insulator series suspension frame 10 in the same posture and position as at the time of installation, and also when the new insulator series 4 is attached, the new insulator series 4 is installed at the same posture as at the time of installation.・ It can be supported by the insulator continuous suspension frame 10 at the position. The removal and attachment work of the bolts 6, 7 and 9 of the both ends of the communication 4 can be easily performed, thus it is suitable for replacing large insulator string such as for example 500 kg.

請求項２に係る発明によれば、碍子連吊り枠体１０の水平材１１には両脚杆１３，１４の間に吊支用ロープ１７を所定間隔おきに複数垂下しておいて、碍子連４の両端部を夫々碍子交換具１８を介して水平材１１の両脚杆１３，１４に吊支する時に、上記吊支用ロープ１７で碍子連４の中間部を吊支するようにしたから、可撓性に構成されている碍子連４の中間部の垂れを無くし、碍子連４の破損を防止することができる。   According to the second aspect of the present invention, a plurality of suspension ropes 17 are suspended at predetermined intervals between the leg rods 13 and 14 on the horizontal member 11 of the insulator continuous suspension frame 10, and It is possible to suspend the intermediate portion of the insulator series 4 with the suspension rope 17 when the both ends of the suspension member are suspended on the leg rods 13 and 14 of the horizontal member 11 via the insulator changer 18, respectively. The drooping of the intermediate part of the insulator series 4 configured to be flexible can be eliminated, and the insulator series 4 can be prevented from being damaged.

請求項３に係る発明によれば、作業用緊張ワイヤー１９には張線器２０を介装しているから、張線器２０のハンドル２０ｏを揺動操作することによって、ワイヤー１９を容易且つ迅速にに緊張させることができる。   According to the third aspect of the present invention, since the tension wire 19 for work is provided with the tensioner 20, the wire 19 can be easily and quickly moved by swinging the handle 20 o of the tensioner 20. You can be nervous.

以下に本発明の好適な実施形態について図面を参照しながら説明すると、図１は変電所設備の一部を示す正面図であり、図２の(a) は図１の一部拡大正面図、(b) はその平面図、(c) は(b) の矢印Ｘで囲まれる部分の拡大図である。これらの図において１は、変電所敷地内に所定間隔おきに立設されたポストで、各ポスト１の所要高さ位置にビーム２が設けてあり、所定距離を隔てたポスト１，１の対向するビーム２，２間には、母線３の両端部が夫々、図２の(b) に示すように平面視Ｖ字形に配置された一対の碍子連４，４を介して張架され、各ビーム２の端部は、図１に示すような通電線５によって、他のビーム２，２間の母線３に電気的に接続されている。   A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a part of substation equipment, and FIG. 2 (a) is a partially enlarged front view of FIG. (b) is a plan view thereof, and (c) is an enlarged view of a portion surrounded by an arrow X in (b). In these figures, 1 is a post erected at a predetermined interval in the substation site, and a beam 2 is provided at a required height position of each post 1, and the posts 1 and 1 facing each other at a predetermined distance. The two ends of the bus 3 are stretched between a pair of insulators 4 and 4 arranged in a V shape in plan view as shown in FIG. 2 (b). The end of the beam 2 is electrically connected to the bus 3 between the other beams 2 and 2 by a conducting wire 5 as shown in FIG.

各碍子連４の一端部は、図６や図７示すように、アイボルト６とＵボルト７とによってビーム２に繋がれ、その他端部は、取付用のボルト９によって、母線３の端部に連結された引止金具８で繋がれている（図２の(b) ，(c) 参照）。碍子連４の一端部をビーム２に繋ぐアイボルト６は、碍子連４の一端部に同軸状にねじ込まれて固定され、このアイボルト６のリング部に通されたＵボルト７がビーム２に対し取り外し可能に取付け固定されるようになっている。   As shown in FIGS. 6 and 7, one end portion of each insulator series 4 is connected to the beam 2 by an eye bolt 6 and a U bolt 7, and the other end portion is connected to the end portion of the bus bar 3 by a mounting bolt 9. They are connected by the connected stoppers 8 (see (b) and (c) of FIG. 2). The eyebolt 6 that connects one end of the insulator series 4 to the beam 2 is fixed by being screwed coaxially to one end of the insulator series 4, and the U bolt 7 passed through the ring part of the eyebolt 6 is removed from the beam 2. It can be installed and fixed as possible.

各碍子連４は、図３の(a) に示すように、例えば３０個のセラミック製の碍子４ａを、それらの間に夫々金属製の連結軸体４ｂを介在させた状態で直列に連結することによって可撓性を有するように構成された一連の絶縁性碍子４ａ…であり、その重量は５００ｋｇ程度となっている。   In each insulator series 4, as shown in FIG. 3 (a), for example, 30 ceramic insulators 4a are connected in series with a metal connecting shaft 4b interposed therebetween. This is a series of insulating insulators 4a configured to have flexibility, and the weight thereof is about 500 kg.

本発明の取替方法の特徴は、図示のような碍子連吊り枠体１０を使用することである。この碍子連吊り枠体１０は、図４に詳細に図示されるように、下部側の水平材１１と上部側の長さの等しい２つの斜材１２，１２とを三角形に一体的に組み付ける共に、水平材１１の一端部には長さの短い脚杆１３を、また水平材１１の他端部には脚杆１３より長さの長い脚杆１４を夫々垂下連結し、また両斜材１２，１２の上端突き合わせ部分から水平材１１に補強材１５を垂下することによって、剛接構造の枠体を形成したものである。尚、長さの短い脚杆１３の下端と長い脚杆１４の下端とを結ぶ線Ｑと、水平線Ｈとの成す角度αは、図２に示すように傾斜状に設置されている碍子連４の、水平線Ｈとの角度と同じである。両斜材１２，１２の夫々上端部と補強材１５の上端部は頂部吊片１６に固着される。   The feature of the replacement method of the present invention is to use the insulator continuous suspension frame 10 as shown. As shown in detail in FIG. 4, the lever continuous suspension frame 10 is formed by integrally assembling a lower horizontal member 11 and two diagonal members 12, 12 having the same length on the upper side in a triangular shape. A leg rod 13 having a short length is connected to one end portion of the horizontal member 11, and a leg rod 14 longer than the leg rod 13 is connected to the other end portion of the horizontal member 11. , 12, the reinforcing member 15 is suspended from the horizontal member 11 from the upper end butting portion to form a rigid frame structure. Note that the angle α formed between the line Q connecting the lower end of the short leg rod 13 and the lower end of the long leg rod 14 and the horizontal line H is an insulator series 4 installed in an inclined manner as shown in FIG. Is the same as the angle with the horizontal line H. The upper ends of the diagonal members 12, 12 and the upper end of the reinforcing member 15 are fixed to the top suspension piece 16, respectively.

また碍子連吊り枠体１０の水平材１１には、両脚杆１３，１４の間に吊支用ロープ１７が所定間隔おきに複数本垂下されていて、碍子連４の両端部を夫々碍子交換具１８を介して水平材１１の両脚杆１３，１４に吊支する時に、それらの吊支用ロープ１７で碍子連４の中間部を吊支するようにしている。各吊支用ロープ１７の上端部は、水平材１１に固着してあるアイボルト１７ｏに取り付けられる。   In addition, a plurality of suspension ropes 17 are suspended at predetermined intervals between the leg rods 13 and 14 on the horizontal member 11 of the insulator frame 10 and both ends of the insulator chain 4 are respectively connected to the insulator changer. When suspended on both leg rods 13, 14 of the horizontal member 11 via 18, the intermediate portion of the insulator series 4 is suspended by the ropes 17 for suspension. The upper end portion of each suspension support rope 17 is attached to an eyebolt 17 o fixed to the horizontal member 11.

上記碍子交換具１８は、図３の(b) に示すように、上部腕１８ａと、下部腕１８ｂと、上部腕１８ａの両端部上面側に取り付けられた一対の吊りワイヤー１８ｃ，１８ｃとからなり、下部腕１８ｂの一端部が上部腕１８ａの下面側一端部に枢着されると共に、下部腕１８ｂの他端部が、上部腕１８ａの他端部下面側に枢着されたボルト１８ｄに係脱自在に係合して、締付用の蝶ナット１８ｅにより締め付け固定されるようになった周知構造のもので、碍子連４の交換時には、図１０の(a) に示される碍子連４の所要位置に隣り合う碍子４ａ，４ａ間の連結軸体４ｂを上部腕１８ａと下部腕１８ｂとで抱持した状態に取り付けられるようになっている。   As shown in FIG. 3 (b), the lever changer 18 includes an upper arm 18a, a lower arm 18b, and a pair of suspension wires 18c and 18c attached to the upper surfaces of both ends of the upper arm 18a. One end portion of the lower arm 18b is pivotally attached to one end portion on the lower surface side of the upper arm 18a, and the other end portion of the lower arm 18b is engaged with a bolt 18d pivotally attached to the lower surface side of the other end portion of the upper arm 18a. It has a known structure that is detachably engaged and is fastened and fixed by a wing nut 18e for tightening. When the lever series 4 is replaced, the lever series 4 shown in FIG. The connecting shaft 4b between the insulators 4a, 4a adjacent to the required position is attached to the upper arm 18a and the lower arm 18b.

次に、本発明に係る碍子連４の取替方法について、図５〜図１０を参照しながら説明する。図５は、クレーンＫによって碍子連吊り枠体１０を取り替えるべき碍子連４の上方まで吊り上げた状態を示しており、図６はその拡大図である。尚、クレーンＫで碍子連吊り枠体１０を吊るには、碍子連吊り枠体１０の頂部吊片１６にＵボルト２１を取り付けて、このＵボルト２１にクレーンＫのフックＦを引っ掛けるようにする。   Next, a method for replacing the insulator series 4 according to the present invention will be described with reference to FIGS. FIG. 5 shows a state in which the lever continuous suspension frame 10 is lifted up by the crane K to the upper side of the lever continuous frame 4 to be replaced, and FIG. 6 is an enlarged view thereof. In order to suspend the insulator continuous suspension frame 10 with the crane K, the U bolt 21 is attached to the top suspension piece 16 of the insulator continuous suspension frame 10 and the hook F of the crane K is hooked on the U bolt 21. .

碍子連４の取替えにあたって、先ず、図７に示すようにＶ字形の両碍子連４，４の夫々ビーム側端部とビーム２との間に夫々作業用緊張ワイヤー１９を張架する。この作業用緊張ワイヤー１９の張架にあたっては、各碍子連４の端部に碍子交換具１８を取り付けて、この碍子交換具１８とビーム２の所要箇所との間に作業用緊張ワイヤー１９を張架する。尚、この作業用緊張ワイヤー１９には、図３の(c) に示すように、一般にシメラーと呼ばれる張線器２０が介装されていて、この張線器２０のハンドル２０ｏを揺動操作することにより、ワイヤー１９を容易に緊張させることができるようになっている。   When replacing the insulator series 4, first, as shown in FIG. 7, the work tension wires 19 are stretched between the beam side ends of the V-shaped insulator series 4 and 4 and the beam 2, respectively. In tensioning the work tension wire 19, a lever changer 18 is attached to the end of each lever series 4, and the work tension wire 19 is stretched between the lever changer 18 and a required portion of the beam 2. Mount. As shown in FIG. 3 (c), a tensioner 20 generally called a shimmer is interposed in the work tension wire 19, and the handle 20o of the tensioner 20 is swung. Thus, the wire 19 can be easily tensioned.

こうしてＶ字形の両碍子連４，４のビーム側端部を夫々作業用緊張ワイヤー１９によりビーム２に強く引張した状態で、Ｖ字形の何れか一方の碍子連４のビーム側端部に碍子交換具１８Ａを取り付け、この碍子交換具１８Ａのワイヤー１８ｃを、クレーンＫによって吊り上げた碍子連吊り枠体１０の短い方の脚杆１３に引っ掛けて吊支すると共に、Ｖ字形の他方の碍子連４の母線側端部に碍子交換具１８Ｂを取り付け、この碍子交換具１８Ｂのワイヤー１８ｃを長い方の脚杆１４に引っ掛けて吊支し、そしてまた両脚杆１３，１４の間から垂下している複数本の吊支用ロープ１７…によって当該一方の碍子連４の中間部を吊支した状態とする。   In this way, in the state where the beam side end portions of the V-shaped lever trains 4 and 4 are strongly pulled to the beam 2 by the work tension wires 19 respectively, the lever replacement is performed on the beam side end portion of one of the V-shaped lever trains 4. 18A is attached, and the wire 18c of the lever changer 18A is hooked and supported on the shorter leg rod 13 of the lever continuous suspension frame 10 lifted by the crane K, and the other V-shaped lever sequence 4 is supported. A plurality of insulators 18B are attached to the ends of the busbars, the wires 18c of the insulator exchanger 18B are hooked on the longer leg rods 14 and suspended, and are also suspended from between the leg rods 13,14. The intermediate portion of the one insulator series 4 is suspended by the suspension support ropes 17.

上記のようにビーム側端部を作業用緊張ワイヤー１９によってビーム２側に引き付けた状態で碍子連吊り枠体１０によって吊支した碍子連４の両端部を、ビーム２及び母線３側から夫々切り離す。この切り離しにあたっては、碍子連４のビーム２側端部はＵボルト７をビーム２から取り外し、母線３側端部は引止金具８に取り付けてある取付用ボルト９を引止金具８から取す。この場合、碍子連４のビーム側端部を作業用緊張ワイヤー１９でビーム２側に強く引き付けているため、Ｕボルト７を容易にビーム２から取り外すことができる。こうして碍子連４の両端部をビーム２及び母線３側から切り離した後、図８の(a) に示すように、碍子連４をクレーンＫにより碍子連吊り枠体１０で吊支したまま地上に下ろし、碍子交換具１８Ａ，１８Ｂを外し、吊支用ロープ１７を解いて、当該一方の古い碍子連４を取り外し、図８の(b) に示す状態とする。   As described above, both ends of the insulator series 4 suspended by the insulator series suspension frame 10 in a state where the beam side end is attracted to the beam 2 side by the work tension wire 19 are separated from the beam 2 and the busbar 3 side, respectively. . In this separation, the U-bolt 7 is removed from the beam 2 at the beam 2 side end of the insulator series 4, and the mounting bolt 9 attached to the retaining bracket 8 is removed from the retaining bracket 8 at the bus 3 end. . In this case, since the beam side end of the insulator series 4 is strongly attracted to the beam 2 side by the working tension wire 19, the U bolt 7 can be easily detached from the beam 2. After separating both ends of the insulator series 4 from the beam 2 and the bus 3 side, the insulator series 4 is suspended on the ground while being suspended by the insulator series suspension frame 10 by the crane K, as shown in FIG. Then, the lever changers 18A and 18B are removed, the hanging support rope 17 is unwound, the one old lever series 4 is removed, and the state shown in FIG.

尚、碍子連４は、図３の(a) に示すように多数の碍子４ａ…を直列に連結して可撓性を有する構造体であることから、碍子連吊り枠体１０によって、ビーム側端部と母線側端部の両端部のみを吊ったのでは、中間部が垂れてしまって、破損するようなおそれもある。従って、図８の(a) に示すように碍子連４の中間部を複数本の吊支用ロープ１７…で吊支することによって、中間部の垂れを無くすることができる。   The insulator series 4 is a flexible structure having a large number of insulators 4a connected in series as shown in FIG. 3 (a). If only the both end portions of the end portion and the busbar side end portion are hung, the intermediate portion may hang down and may be damaged. Accordingly, as shown in FIG. 8 (a), the intermediate portion of the insulator string 4 is suspended by a plurality of suspension support ropes 17.

上記のように古い碍子連４を取り外した後、地上において新しい碍子連４を、図９に示すように碍子連吊り枠体１０に、取り外し前と全く同様に吊支してクレーンで吊り上げ、そして先ず、この新しい碍子連４の母線側端部を、碍子連４の取付位置で待っている引止金具８に取付用のボルトで繋ぎ、それから新しい碍子連４のビーム側端部とビーム２との間に作業用緊張ワイヤー１９を張架する。この作業用緊張ワイヤー１９の張架にあたっては、碍子連４の端部に碍子交換具１８を取り付け、この碍子交換具１８とビーム２の所要箇所との間に作業用緊張ワイヤー１９を張架する。   After removing the old insulator series 4 as described above, a new insulator series 4 on the ground is suspended from the insulator series suspension frame 10 as shown in FIG. First, the bus-side end of the new lever series 4 is connected to a retaining bracket 8 waiting at the mounting position of the lever series 4 with mounting bolts, and then the beam-side end of the new lever series 4 and the beam 2 The tension wire 19 for work is stretched between. In tensioning the work tension wire 19, a lever changer 18 is attached to the end of the lever series 4, and the work tension wire 19 is stretched between the lever changer 18 and a required portion of the beam 2. .

新しい碍子連４のビーム側端部とビーム２との間に作業用緊張ワイヤー１９を張架した後、この碍子連４のビーム側端部をビーム２にボルト６，７により繋ぐ。即ち、碍子連４のビーム側端部に取り付けてあるアイボルト６にＵボルト７を係入して、このＵボルト７をビーム２に取り付ける。この状態を図１０の(a) に示す。この場合、碍子連４のビーム側端部を作業用緊張ワイヤー１９によってビーム２側に強く引き付けているから、Ｕボルト７を容易にビーム２から取り付けることができる。   After a working tension wire 19 is stretched between the beam side end of the new lever series 4 and the beam 2, the beam side end of the lever series 4 is connected to the beam 2 by bolts 6 and 7. That is, the U bolt 7 is engaged with the eye bolt 6 attached to the beam side end of the insulator series 4, and the U bolt 7 is attached to the beam 2. This state is shown in FIG. In this case, since the beam side end portion of the insulator series 4 is strongly attracted to the beam 2 side by the working tension wire 19, the U bolt 7 can be easily attached from the beam 2.

新しい碍子連４のビーム側端部をビーム２にボルト６，７によって繋いだ後、作業用緊張ワイヤー１９を取り外し、碍子連吊り枠体１０を取り外すことによって、Ｖ字形の一方の碍子連４の取替作業を終了する。この状態を図１０の(b) に示す。尚、碍子連吊り枠体１０を碍子連４から外すには、碍子交換具１８Ａ，１８Ｂを碍子連４から取り外し、各吊支用ロープ１７を解けばよい。   After connecting the beam side end of the new insulator series 4 to the beam 2 with bolts 6 and 7, the work tension wire 19 is removed, and the insulator series suspension frame 10 is removed, so that one of the V-shaped insulator series 4 is removed. Finish the replacement work. This state is shown in FIG. In order to remove the lever continuous suspension frame 10 from the lever sequence 4, the lever changers 18A and 18B may be removed from the lever sequence 4 and the suspension support ropes 17 may be unwound.

以上、母線３の端部に平面視Ｖ字形に配置された一対の碍子連４，４の一方の碍子連４を取り替える場合の一連の作業工程について説明したが、引き続き同じＶ字形碍子連４，４の他方の碍子連４を取り替える場合も、上述した一方の碍子連４の作業工程と全く同じ方法を実施すればよい。また、他のＶ字形碍子連４，４の取り替えについても、上述の作業工程と全く同様である。   In the above, a series of work steps in the case of replacing one lever series 4 of the pair of lever series 4, 4 arranged in a V shape in plan view at the end of the bus bar 3 has been described. When the other lever series 4 is replaced, the same method as that of the above-described one of the lever series 4 may be performed. The replacement of the other V-shaped insulators 4 and 4 is exactly the same as the above-described operation process.

以上説明したように、本発明に係る碍子連の取替方法は、下部側の水平材１１と上部側の長さの等しい２つの斜材１２，１２とを三角形に組み付ける共に、水平材１１の両端部に脚杆１３，１４を垂下連結してなる碍子連吊り枠体１０を使用し、先ず、Ｖ字形の両碍子連４，４の夫々ビーム側端部とビームとの間に夫々作業用緊張ワイヤー１９を張架し、この状態で、Ｖ字形の一方の碍子連４のビーム側端部に碍子交換具１８を取り付けて、クレーンＫで吊り上げた碍子連吊り枠体１０の両脚杆１３，１４の短い方の脚杆１３に吊支し、同碍子連４の母線側端部に碍子交換具１８を取り付けて長い方の脚杆１４に吊支し、その後、この碍子連４の両端部をビーム２及び引止金具８から切り離して、碍子連吊り枠体１０で吊支したまま地上に下ろし、古い碍子連４を取り外した後、新しい碍子連４を碍子連吊り枠体１０に上記同様に吊支してクレーンＫで吊り上げ、新しい碍子連４の母線側端部を引止金具８にボルト９で繋ぎ、ビーム側端部とビーム２の間に作業用緊張ワイヤー１９を張架した後、このビーム側端部をビーム２にボルト６，７で繋ぎ、碍子連吊り枠体１０を外すことによって、碍子連４を取り替えるようにしたから、従来の取替方法に比べると、碍子連の取替作業を大幅に短縮することができる。   As described above, in the method for replacing the insulator series according to the present invention, the horizontal member 11 on the lower side and the two diagonal members 12, 12 having the same length on the upper side are assembled into a triangle, and the horizontal member 11 The lever frame 10 is formed by suspending leg rods 13 and 14 at both ends. First, each of the V-shaped lever frames 4 and 4 is used for work between the beam side end and the beam. The tension wire 19 is stretched, and in this state, the lever exchanging frame 18 lifted by the crane K is attached to the beam side end portion of the one V-shaped lever sequence 4 and lifted by the crane K. 14 is hung on the shorter leg rod 13, and a lever changer 18 is attached to the end portion on the bus bar side of the lever series 4 to be hung on the longer leg rod 14. Is separated from the beam 2 and the retaining bracket 8 and suspended on the ground while being suspended by the insulator continuous frame 10. Then, after the old insulator series 4 is removed, the new insulator series 4 is suspended from the insulator series suspension frame 10 in the same manner as described above and lifted by the crane K. After connecting with the bolt 9 and stretching the tension wire 19 for working between the beam side end portion and the beam 2, the beam side end portion is connected to the beam 2 with the bolts 6 and 7, and the insulator frame 10 is removed. Thus, since the insulator series 4 is replaced, the replacement operation of the insulator series can be greatly shortened as compared with the conventional replacement method.

特に、この取替方法に使用する碍子連吊り枠体１０においては、長さの短い脚杆１３の下端と長い脚杆１４の下端とを結ぶ線Ｑと、水平線Ｈとの成す傾斜角度αが、図２に示すように傾斜状に設置されている碍子連４の、水平線Ｈとの傾斜角度と同じになるように設定されているから、古い碍子連４の両端部をビーム２及び引止金具８から取り外し時は、この古い碍子連４を、設置時と同じ姿勢・位置に碍子連吊り枠体１０によって吊支でき、また新しい碍子連４を取り付ける時も、新しい碍子連４を、設置時と同じ姿勢・位置に碍子連吊り枠体１０によって吊支できることになり、これにより碍子連４の両端部のボルト６，７及び９の取外し及び取付け作業を容易迅速に行なうことができる。従って、例えば重量が５００ｋｇというような大型の碍子連を取り替えるのにきわめて好適である。   In particular, in the insulator continuous suspension frame 10 used for this replacement method, the inclination angle α formed by the line Q connecting the lower end of the short leg rod 13 and the lower end of the long leg rod 14 and the horizontal line H is set. 2 is set to be the same as the inclination angle with the horizontal line H of the insulator series 4 installed in an inclined manner as shown in FIG. When removing from the bracket 8, this old insulator series 4 can be supported by the insulator series suspension frame 10 in the same posture and position as the installation, and when installing a new insulator series 4, the new insulator series 4 is installed. It can be suspended by the lever continuous suspension frame 10 at the same posture and position as the time, whereby the bolts 6, 7 and 9 at both ends of the lever continuous 4 can be easily removed and attached. Therefore, it is very suitable for exchanging a large insulator series having a weight of, for example, 500 kg.

変電所設備の一部を示す正面図である。It is a front view which shows a part of substation equipment. (a) は図１の一部拡大正面図、(b) はその平面図、(c) は(b) の矢印Ｘで囲まれる部分の拡大図である。(a) is a partially enlarged front view of FIG. 1, (b) is a plan view thereof, and (c) is an enlarged view of a portion surrounded by an arrow X in (b). (a) は碍子連の拡大正面図、(b) は碍子交換具の正面図、(c) は作業用緊張ワイヤー及び張線器を示す説明図である。(a) is an enlarged front view of an insulator series, (b) is a front view of an insulator changer, and (c) is an explanatory view showing a working tension wire and a tensioner. 碍子連吊り枠体の拡大正面図である。It is an enlarged front view of a lever continuous suspension frame. クレーンによって碍子連吊り枠体を、取り替えるべき碍子連の上方まで吊り上げた状態を示す説明図である。It is explanatory drawing which shows the state which lifted the lever continuous suspension frame to the upper direction of the lever continuous to be replaced by the crane. 図５の拡大図である。FIG. 6 is an enlarged view of FIG. 5. 本発明の取替方法によって碍子連を取り外している過程の説明図である。It is explanatory drawing of the process which has removed the insulator series by the replacement | exchange method of this invention. (a) は取り外した碍子連を碍子連吊り枠体で吊支して地上へ下ろしている状態の説明図、(b) は取り外した碍子連を地上へ下ろした状態の説明図である。(a) is an explanatory view of a state where the removed insulator series is suspended by the insulator series suspension frame and is lowered to the ground, and (b) is an explanatory view of a state where the removed insulator series is lowered to the ground. 新しい碍子連を碍子連吊り枠体で吊り上げている状態の説明図である。It is explanatory drawing of the state which has lifted the new insulator series with the insulator series suspension frame. (a) は新しい碍子連を所定の設置個所に取り付けている状態の説明図であり、(b) は新しい碍子連を所定の設置個所に取り付け終えた状態の説明図である。(a) is explanatory drawing of the state which has attached the new insulator series to the predetermined installation location, (b) is explanatory drawing of the state which has finished attaching the new insulator sequence to the predetermined installation location.

符号の説明Explanation of symbols

２ ビーム
３ 母線
４ 碍子連
６ アイボルト
７ Ｕボルト
８ 引止金具
９ 取付用ボルト
１０ 碍子連吊り枠体
１１ 水平材
１２ 斜材
１３ 短い方の脚杆
１４ 長い方の脚杆
１７ 吊支用ロープ
１８ 碍子交換具
１９ 作業用緊張ワイヤー
２０ 張線器 2 beam 3 bus 4 insulator 6 eye bolt 7 U bolt 8 retaining bracket 9 mounting bolt 10 insulator continuous frame 11 horizontal member 12 diagonal member 13 shorter leg rod 14 longer leg rod 17 suspension rope 18 Insulator change tool 19 Tension wire for work 20

Claims (3)

変電所において対向するビーム間に母線の両端部が夫々平面視Ｖ字形に配置される一対の碍子連を介して張架され、各碍子連の一端部はビームにボルトで繋がれ、その他端部は母線の端部に連結された引止金具にボルトで繋がれている碍子連の取替方法であって、
下部側の水平材と上部側の長さの等しい２つの斜材とを三角形に組み付ける共に、水平材の両端部に長さの長短異なる脚杆を垂下連結してなる碍子連吊り枠体を設けておいて、先ず、Ｖ字形の両碍子連の夫々ビーム側端部とビームとの間に夫々作業用緊張ワイヤーを張架し、この状態で、Ｖ字形の何れか一方の碍子連のビーム側端部に碍子交換具を取り付けて、クレーンで吊り上げた碍子連吊り枠体の短い方の脚杆に吊支すると共に、同碍子連の母線側端部に碍子交換具を取り付けて、長い方の脚杆に吊支し、その後、この碍子連の両端部をビーム及び引止金具から切り離して、碍子連吊り枠体で吊支したまま地上に下ろして取り外した後、新しい碍子連を碍子連吊り枠体に上記同様に吊支してクレーンで吊り上げ、新しい碍子連の母線側端部を引止金具にボルトで繋ぎ、そのビーム側端部とビームとの間に作業用緊張ワイヤーを張架した後、このビーム側端部をビームにボルトで繋ぎ、碍子連吊り枠体を外すことによって、Ｖ字形の何れか一方の碍子連を取り替えるようにした碍子連の取替方法。 In the substation, both ends of the bus are stretched between a pair of opposed beams via a pair of insulators arranged in a V shape in plan view, and one end of each insulator is connected to the beam by a bolt, and the other end Is a replacement method of the insulator series that is bolted to the retaining bracket connected to the end of the bus,
The lower horizontal member and two diagonal members with the same length on the upper side are assembled into a triangle, and a lever-hanging frame is formed by connecting leg rods with different lengths at both ends of the horizontal member. First, a tension wire for work is stretched between the beam-side end portions of the two V-shaped levers and the beam, and in this state, the beam side of one of the V-shaped levers Attach the insulator changer to the end and suspend it on the shorter leg rod of the insulator frame suspended by the crane. At the same time, attach the insulator changer to the busbar side end of the insulator After hanging on the leg rod, both ends of this lever series are separated from the beam and the retaining bracket, and are suspended by the lever frame suspension frame and removed from the ground, and then the new lever series is suspended. Suspended on the frame in the same way as above and lifted with a crane. After connecting a tension wire for work between the beam side end and the beam, connect the beam side end to the beam with a bolt, and remove the insulator frame. The method of replacing the insulator series in which any one of the V-shaped insulator series is replaced by the above. 碍子連吊り枠体の水平材には両脚杆の間に吊支用ロープを所定間隔おきに複数垂下しておいて、碍子連の両端部を夫々碍子交換具を介して水平材の両脚杆に吊支する時に、上記吊支用ロープで碍子連の中間部を吊支するようにした請求項１に記載の碍子連の取替方法。   A plurality of suspension ropes are suspended between the leg rods at predetermined intervals on the horizontal member of the insulator continuous suspension frame, and both ends of the insulator ream are respectively attached to both legs of the horizontal member via an insulator changer. The method for replacing the insulator series according to claim 1, wherein when hanging, the intermediate part of the insulator series is suspended by the rope for suspension. 作業用緊張ワイヤーには張線器を介装している請求項１又は２に記載の碍子連の取替方法。   The method for replacing the insulator series according to claim 1 or 2, wherein a tension wire for work is provided with a tensioner.
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