JP2006340473A - Transformer platform - Google Patents

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JP2006340473A
JP2006340473A JP2005161028A JP2005161028A JP2006340473A JP 2006340473 A JP2006340473 A JP 2006340473A JP 2005161028 A JP2005161028 A JP 2005161028A JP 2005161028 A JP2005161028 A JP 2005161028A JP 2006340473 A JP2006340473 A JP 2006340473A
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transformer
metal
arm
insulator
utility pole
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Keisuke Honda
啓介 本田
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a transformer platform for supporting a transformer on a metal utility pole in an insulated state. <P>SOLUTION: The transformer platform is attached to the metal utility pole 1 so as to support the transformer 2 in the insulated state, and provided with steel crossarms 3, 3 crossing and attached to both sides of the metal utility pole, laterally laying crossing steel crossarms 4, 4 placed on the steel crossarms 3, 3 through insulators 5, 5, receiving and supporting the transformer 2, a laterally laying insulator 6 mounted between an intermediate section of the transformer 2 and the metal utility pole 1, and a fixing/binding member 7 for fixing the intermediate section of the transformer 2 to the laterally laying insulator 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、金属製電柱に変圧器を絶縁状態に支持させるための絶縁変台に関する。   The present invention relates to an insulation base for supporting a transformer in an insulated state on a metal power pole.

従来から、電柱にはコンクリート製のものが用いられているが、搬入が困難な狭隘な場所や山間部等においては、鋼管柱や、コンクリート製の台柱と鋼管からなる複合柱等の継ぎ足し可能な複数の部材からなる金属製の電柱等が用いられることがある。   Conventionally, electric poles have been made of concrete, but in confined places and mountainous areas that are difficult to carry in, it is possible to add steel pipe pillars, composite pillars made of concrete base pillars and steel pipes, etc. Metal poles made of a plurality of members may be used.

これらの電柱へ変圧器を取り付ける場合、例えば、図６に示すように、金属製電柱１に支持される円筒状等の変圧器２は、金属製電柱１の両側に直交する方向に取り付けられた一対の腕金３上に載置され、その中間部と金属製電柱１の間に必要に応じて木座を介在させて亜鉛メッキを施された鉄線７等により２回以上巻回されて縛着される。なお、図６中、符号９は高圧カットアウトである。   When attaching a transformer to these utility poles, for example, as shown in FIG. 6, the cylindrical transformer 2 supported by the metal utility pole 1 is attached in a direction orthogonal to both sides of the metal utility pole 1. Placed on a pair of armrests 3 and tied by winding it twice or more with a galvanized iron wire 7 with a wood seat between its middle part and the metal utility pole 1 as necessary. Worn. In FIG. 6, reference numeral 9 is a high-pressure cutout.

電気設備技術基準には、電路に施設する機械器具の鉄台及び金属製外箱には所定の接地工事を施すべきことが規定されている。上述のように、金属製電柱１上において変圧器２が電気的に接続された状態で載置される場合には、同技術基準により、高圧用又は特別高圧用ではＡ種接地工事（接地抵抗１０Ω以下）が義務付けられている。ちなみに、電柱に備えられた腕金や変台に電気機器を付設するための取付け金具が提案されている（例えば、特許文献１参照）   The electrical equipment technical standard stipulates that a predetermined grounding work should be applied to the iron base and the metal outer box of machinery and equipment installed on the electric circuit. As described above, when the transformer 2 is mounted on the metal utility pole 1 in an electrically connected state, according to the same technical standards, the A type grounding work (ground resistance) is used for high voltage or extra high voltage. 10Ω or less) is required. Incidentally, there has been proposed a mounting bracket for attaching an electric device to a brace or a turntable provided on a utility pole (see, for example, Patent Document 1).

特開平７−２６４７３８号公報Japanese Patent Laid-Open No. 7-264738

上述のように、変圧器２を載置する場合には、例えば、山間部等の岩盤の多い地域では、接地抵抗値１０Ω以下を確保するのが容易でないことが多く、そのために、通常の数倍の接地極を用いたり、通常よりも深く接地極を打ち込むような特殊工法を用いたり、変圧器２からかなり離れた場所で接地しなければならないことがあった。そのような場合には、多額の接地工事費を要していた。   As described above, when the transformer 2 is mounted, for example, in a region with a lot of rock such as a mountainous area, it is often not easy to secure a ground resistance value of 10Ω or less. In some cases, it is necessary to use a double grounding electrode, use a special construction method in which the grounding electrode is driven deeper than usual, or perform grounding at a location far away from the transformer 2. In such a case, a large amount of grounding work was required.

上記電気設備技術基準によれば、変圧器２を絶縁状態に支持させれば、接地条件が大幅に緩和されるＢ種接地工事扱いでよいとされている。従って、絶縁措置を施した変台に変圧器２を支持させれば、接地工事費の大幅な低減化が可能になる。   According to the electrical equipment technical standards, it is said that if the transformer 2 is supported in an insulated state, it can be handled as a class B grounding work that significantly reduces the grounding conditions. Therefore, if the transformer 2 is supported on a turntable that has been insulated, the grounding work cost can be greatly reduced.

本発明は、このような実情に鑑みてなされ、変圧器を金属製電柱に絶縁状態に支持することができる絶縁変台を提供することを目的とする。   This invention is made | formed in view of such a situation, and it aims at providing the insulation stand which can support a transformer in an insulated state to a metal power pole.

（１）本発明の絶縁変台は、変圧器２を絶縁状態に支持するために金属製電柱１に取り付けられる絶縁変台Ｚであって、
前記金属製電柱１に取り付けられた腕金３と、
前記変圧器を受載支持する腕金４と、
前記腕金３と前記腕金４との間に間装され、前記変圧器と前記金属製電柱とを絶縁する碍子５と、
を備えたことを特徴とする。 (1) The insulation base of the present invention is an insulation base Z attached to the metal power pole 1 in order to support the transformer 2 in an insulated state,
A brace 3 attached to the metal utility pole 1;
A brace 4 for receiving and supporting the transformer;
An insulator 5 interposed between the arm metal 3 and the arm metal 4 to insulate the transformer from the metal power pole;
It is provided with.

このような構成によれば、変圧器２（の底部）を受載支持する腕金４，４が碍子５，５を介して腕金３，３に絶縁状態に支持されるため、変圧器２は金属製電柱１に絶縁状態に支持される。   According to such a configuration, the arm brackets 4 and 4 for receiving and supporting the transformer 2 (the bottom thereof) are supported in an insulated state by the arm brackets 3 and 3 via the insulators 5 and 5, so that the transformer 2 Is supported in an insulated state by the metal utility pole 1.

（２）前記腕金３は、前記金属製電柱１の両側に一対取り付けられ、該一対の腕金３，３には、一対の前記腕金４，４が碍子５，５を介して交差状に載架されるのが好ましい。このようにすれば、変圧器２の支持状態が安定化する。   (2) A pair of the arm brackets 3 are attached to both sides of the metal power pole 1, and a pair of the arm brackets 4, 4 intersect the pair of arm brackets 3, 3 via insulators 5, 5. It is preferable to be mounted on. If it does in this way, the support state of transformer 2 will be stabilized.

（３）記変圧器２の中間部と前記金属製電柱１の間には、横架絶縁体６が間装され、該横架絶縁体６は、固縛部材７によって、前記変圧器２の中間部に固定されるのが好ましい。このようにすれば、変圧器２を金属製電柱１に対して絶縁状態に固定することができる。   (3) A horizontal insulator 6 is interposed between the intermediate portion of the transformer 2 and the metal power pole 1, and the horizontal insulator 6 is connected to the transformer 2 by a securing member 7. It is preferable to be fixed to the middle part. In this way, the transformer 2 can be fixed in an insulated state with respect to the metal utility pole 1.

（４）前記横架絶縁体６は、腕金４１と腕金４２の間に碍子５，５を間装させてなり、かつ、前記腕金４１が締結部材８を介して前記金属製電柱１に固定される一方、前記腕金４２には、前記固縛部材７を介して前記変圧器２が固定されるのが好ましい。このようにすれば、腕金４，４に受載支持された変圧器２を金属製電柱１に対して絶縁状態で安定に固定することができる。   (4) The horizontal insulator 6 is formed by interposing insulators 5 and 5 between an arm metal 41 and an arm metal 42, and the arm metal 41 is connected to the metal utility pole 1 via a fastening member 8. On the other hand, it is preferable that the transformer 2 is fixed to the arm metal 42 via the lashing member 7. If it does in this way, the transformer 2 received and supported by the braces 4 and 4 can be stably fixed to the metal utility pole 1 in an insulated state.

本発明の絶縁変台は、変圧器を受載支持する腕金が碍子を介して金属製電柱に取り付けられた腕金に絶縁状態に支持されるため、変圧器を金属製電柱に絶縁状態に支持することができる。従って、碍子を介することなく変圧器を腕金に直接載置していた場合よりも接地条件が大幅に緩和されるため、接地工事費の大幅な低減化が可能になる。     Since the armrest for receiving and supporting the transformer is supported in an insulated state by a metal arm attached to a metal power pole through a lever, the transformer is insulated from the metal power pole. Can be supported. Therefore, since the grounding condition is greatly eased compared to the case where the transformer is directly placed on the armrest without using a lever, the grounding cost can be greatly reduced.

以下に、本発明の実施の形態に係る絶縁変台について図面を参照しつつ詳細に説明する。
〔実施の形態１〕
本実施の形態は、図１乃至図３に示され、図１は金属製電柱１に取り付けた絶縁変台Ｚに変圧器２を支持させた状態の側面図、図２は平面図、図３は絶縁変台Ｚの正面図である。これらの図にて、符号３は腕金で、金属製電柱１の両側に交差状（直交状）に取り付けられる。４は変圧器２を受載支持する横架腕金（本発明の腕金）で、碍子５を介して腕金３，３に交差状に載架される。６は横架絶縁体で、変圧器２の中間部と金属製電柱１の間に間装される。７は固縛部材（例えば、４．０ｍｍφ程度の亜鉛メッキ鉄線等）で、変圧器２の中間部に巻回させて、その両端を横架絶縁体６に固定して変圧器２を横架絶縁体６に一体化する。 Hereinafter, an insulating base according to an embodiment of the present invention will be described in detail with reference to the drawings.
[Embodiment 1]
This embodiment is shown in FIGS. 1 to 3, in which FIG. 1 is a side view of a state in which a transformer 2 is supported on an insulating base Z attached to a metal utility pole 1, FIG. 2 is a plan view, and FIG. FIG. 2 is a front view of an insulating turntable Z. In these drawings, reference numeral 3 denotes a brace, which is attached to both sides of the metal utility pole 1 in a cross shape (orthogonal shape). Reference numeral 4 denotes a horizontal armor (armor according to the present invention) for receiving and supporting the transformer 2, and is mounted on the armors 3 and 3 in a crossing manner via an insulator 5. A horizontal insulator 6 is interposed between the intermediate portion of the transformer 2 and the metal utility pole 1. Reference numeral 7 denotes a securing member (for example, a galvanized iron wire of about 4.0 mmφ), which is wound around the intermediate portion of the transformer 2 and fixed at both ends to the horizontal insulator 6 to horizontally mount the transformer 2. It integrates with the insulator 6.

横架絶縁体６は、腕金４１と腕金４２の間に碍子５，５を間装させてなり、一方の腕金４１が、締結部材（例えば、スチール製のＵバンド等）８を介して金属製電柱１に固定され、他方の腕金４２には、固縛部材７を介して変圧器２が固定される。これにより、腕金３と絶縁された横架腕金４，４に受載支持された変圧器２の中間部が横架絶縁体６を介して金属製電柱１に対して固定されるため、変圧器２は金属製電柱１に絶縁状態で固定支持される。従って、碍子を介することなく変圧器を腕金に直接載置していた従来よりも接地条件が大幅に緩和されるため、接地工事費の大幅な低減化が可能になる。なお、碍子５は、周知のように、変圧器２を支持することのできる充分な耐荷重強度を備えている。   The horizontal insulator 6 is formed by interposing insulators 5 and 5 between an arm metal 41 and an arm metal 42, and one arm metal 41 is interposed via a fastening member (for example, a steel U band). The transformer 2 is fixed to the other arm metal 42 via the securing member 7. Thereby, since the intermediate part of the transformer 2 received and supported by the horizontal arm metal 4 and 4 insulated from the arm metal 3 is fixed to the metal power pole 1 via the horizontal insulator 6, The transformer 2 is fixedly supported on the metal power pole 1 in an insulated state. Therefore, since the grounding condition is greatly eased compared to the conventional case where the transformer is directly mounted on the armrest without using a lever, the grounding cost can be greatly reduced. As is well known, the insulator 5 has sufficient load-bearing strength that can support the transformer 2.

上述の腕金３は角鋼管等からなり、その基部はボルト締結等によって金属製電柱１に固定され、かつ、アームタイ３１によって充分な支持強度が得られるように補強され、その先端には、高圧カットアウト９が取付られている。この腕金３に４個の碍子５を介して交差状に載架される横架腕金４，４も角鋼管等からなり、碍子５は、ボルトｂの締結によって腕金３と横架腕金４に固定される。本実施の形態では、図２（ｂ）に示すように、変圧器２の底部を一対の横架腕金４に載置しているので、載置状態が安定化し、かつ変圧器２の底部の腐食状態や油漏れ等を地上から目視でチェックすることができる。   The arm metal 3 is made of a square steel pipe or the like, and its base is fixed to the metal power pole 1 by bolt fastening or the like, and is reinforced by an arm tie 31 so that sufficient support strength can be obtained. Cutout 9 is attached. The horizontal arm brackets 4 and 4 mounted on the arm metal 3 in a crossing manner via four levers 5 are also made of square steel pipes, and the lever 5 is connected to the arm metal 3 and the horizontal arm by fastening bolts b. Fixed to gold 4. In the present embodiment, as shown in FIG. 2 (b), since the bottom of the transformer 2 is placed on the pair of horizontal arms 4, the placed state is stabilized and the bottom of the transformer 2 is placed. It is possible to visually check the corrosion state, oil leakage, etc. from the ground.

また、変圧器２の中間部を固定するための腕金４１，４２も角鋼管等からなり、同様に、ボルトｂの締結によって腕金４１，４２間に碍子５を固定する。そのボルトｂの締結の際に、一方の腕金４１に締結部材８を予め固定しておくことができる。従って、変圧器２を横架腕金４，４に搭載する前に、この締結部材８によって腕金４１，４２及び碍子５からなる横架絶縁体６を金属製電柱１に固定しておけば、変圧器２を位置決めした後、直ちにその中間部を亜鉛メッキ鉄線７等で横架絶縁体６に固定することができる。   Moreover, the arm metal 41 and 42 for fixing the intermediate part of the transformer 2 also consists of a square steel pipe etc. Similarly, the insulator 5 is fixed between the arm metal 41 and 42 by fastening of the volt | bolt b. When the bolt b is fastened, the fastening member 8 can be fixed to the one arm 41 in advance. Therefore, before the transformer 2 is mounted on the horizontal arms 4, 4, the horizontal insulator 6 composed of the arms 41, 42 and the insulator 5 is fixed to the metal power pole 1 by the fastening member 8. After the transformer 2 is positioned, the intermediate portion can be immediately fixed to the horizontal insulator 6 with a galvanized iron wire 7 or the like.

その亜鉛メッキ鉄線７による固定方法は、例えば、他方の腕金４２の両側に形成した貫通孔ｈ（図３参照）に亜鉛メッキ鉄線７の先端を通して２，３回巻き付けた後折り曲げる等により容易に変圧器２の中間部を腕金４２に固定（縛着）できるため、従来のように、変圧器と金属製電柱との間に木座を介在させて縛着する方法よりも作業性が顕著に向上し、かつ、その固定状態も安定化する。   The fixing method using the galvanized iron wire 7 can be easily performed, for example, by winding the through hole h (see FIG. 3) formed on both sides of the other arm metal 42 through the tip of the galvanized iron wire 7 a few times and then bending it. Since the intermediate part of the transformer 2 can be fixed (fastened) to the brace 42, the workability is more remarkable than the conventional method of fastening with a wooden seat interposed between the transformer and the metal power pole. And the fixed state is also stabilized.

〔実施の形態２〕
本実施の形態は、図４及び図５に示され、この例では、２つの変圧器２を支持するように構成される。その基本的な構成は、前実施の形態と同様であるが、図５に示すように、腕金３，３上に載架される横架腕金４，４は、それぞれ角鋼管を二枚重ねにして支持強度を向上させている。碍子５は、前述したように、充分な耐荷重強度を備えているので、前実施の形態と同様に４個の碍子５で横架腕金４，４を支持する構成としている。変圧器２，２は、各独立に、亜鉛メッキ鉄線７等により、腕金４２に固定（縛着）するようにしている。このような構成によっても、前実施の形態と同様の作用効果を得ることができる。 [Embodiment 2]
This embodiment is shown in FIGS. 4 and 5, and in this example, is configured to support two transformers 2. The basic configuration is the same as that of the previous embodiment. However, as shown in FIG. 5, the horizontal arm brackets 4 and 4 mounted on the arm brackets 3 and 3 are each formed by overlapping two square steel pipes. The support strength is improved. As described above, since the insulator 5 has sufficient load-bearing strength, it is configured to support the horizontal arms 4 and 4 with the four insulators 5 as in the previous embodiment. The transformers 2 and 2 are fixed (bound) to the arm metal 42 by galvanized iron wire 7 or the like independently of each other. Even with such a configuration, it is possible to obtain the same effects as those of the previous embodiment.

なお、本発明は、実施の形態に限定されることなく、発明の要旨を逸脱しない限りにおいて、適宜、必要に応じて、設計変更や改良等を行うのは自由であり、例えば、変圧器２と金属製電柱１との間に間装される横架絶縁体６は、必ずしも、腕金４１，４２及び碍子５からなる構成でなくてもよく、木材や樹脂材等の絶縁性部材を代用してもよい。その場合には、絶縁性部材に縛着用の貫通孔を形成すると共に、締結部材８を予め固定しておけばよい。   Note that the present invention is not limited to the embodiment, and it is free to make design changes and improvements as necessary, as long as it does not depart from the gist of the invention. For example, the transformer 2 The horizontal insulator 6 that is interposed between the metal pole 1 and the metal pole 1 does not necessarily have to be composed of the armatures 41 and 42 and the insulator 5; instead, an insulating member such as wood or resin material is used instead. May be. In that case, the fastening member 8 may be fixed in advance while forming a through-hole for binding to the insulating member.

本発明の実施の形態１に係る絶縁変台に変圧器を支持させた状態の側面図である。It is a side view of the state where the transformer was supported by the insulation base concerning Embodiment 1 of the present invention. （ａ）同平面図、（ｂ）同底面図である。(A) The top view, (b) The bottom view. 同絶縁変台の正面図である。It is a front view of the same insulation stand. （ａ）同実施の形態２に係る絶縁変台に変圧器を支持させた状態の平面図、（ｂ）同底面図である。(A) The top view of the state which supported the transformer on the insulation stand based on Embodiment 2, (b) The bottom view. 同絶縁変台の正面図である。It is a front view of the same insulation stand. 従来の変圧器の支持構造の一例を示す説明図である。It is explanatory drawing which shows an example of the support structure of the conventional transformer.

符号の説明Explanation of symbols

１…金属製電柱、２…変圧器、３，４，４１，４２…腕金、５…碍子、６…横架絶縁体、７…固縛部材、８…締結部材、Ｚ…絶縁変台   DESCRIPTION OF SYMBOLS 1 ... Metal utility pole, 2 ... Transformer, 3, 4, 41, 42 ... Arm, 5 ... Insulator, 6 ... Horizontal insulator, 7 ... Fastening member, 8 ... Fastening member, Z ... Insulation stand

Claims (4)

変圧器（２）を絶縁状態に支持するために金属製電柱（１）に取り付けられる絶縁変台（Ｚ）であって、
前記金属製電柱（１）に取り付けられた腕金（３）と、
前記変圧器を受載支持する腕金（４）と、
前記腕金（３）と前記腕金（４）との間に間装され、前記変圧器と前記金属製電柱とを絶縁する碍子（５）と、
を備えたことを特徴とする絶縁変台。 Insulation base (Z) attached to the metal utility pole (1) to support the transformer (2) in an insulated state,
A brace (3) attached to the metal utility pole (1);
A brace (4) for receiving and supporting the transformer;
An insulator (5) interposed between the arm metal (3) and the arm metal (4) to insulate the transformer and the metal utility pole;
An insulating turntable characterized by comprising: 前記腕金（３）は、前記金属製電柱（１）の両側に一対取り付けられ、該一対の腕金（３）（３）には、一対の前記腕金（４）（４）が碍子（５）（５）を介して交差状に載架されることを特徴とする請求項１に記載の絶縁変台。   A pair of the arm brackets (3) are attached to both sides of the metal utility pole (1), and the pair of arm brackets (4), (4) is a lever (3) (3). 5) The insulating turntable according to claim 1, which is mounted in an intersecting manner via (5). 前記変圧器（２）の中間部と前記金属製電柱（１）の間には、横架絶縁体（６）が間装され、該横架絶縁体（６）は、固縛部材（７）によって、前記変圧器（２）の中間部に固定されることを特徴とする請求項１又は２に記載の絶縁変台。   Between the intermediate part of the transformer (2) and the metal utility pole (1), a horizontal insulator (6) is interposed, and the horizontal insulator (6) is a securing member (7). The insulation base as claimed in claim 1 or 2, wherein the insulation base is fixed to an intermediate part of the transformer (2). 前記横架絶縁体（６）は、腕金（４１）と腕金（４２）の間に碍子（５）（５）を間装させてなり、かつ、前記腕金（４１）が締結部材（８）を介して前記金属製電柱（１）に固定される一方、前記腕金（４２）には、前記固縛部材（７）を介して前記変圧器（２）が固定されることを特徴とする請求項３に記載の絶縁変台。   The horizontal insulator (6) has an insulator (5) (5) interposed between an arm metal (41) and an arm metal (42), and the arm metal (41) is a fastening member ( The transformer (2) is fixed to the arm metal (42) via the securing member (7) while being fixed to the metal power pole (1) via 8). The insulation base according to claim 3.
JP2005161028A 2005-06-01 2005-06-01 Transformer platform Pending JP2006340473A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100933458B1 (en) 2009-09-21 2009-12-23 (주)성전엔지니어링 Connected fixtures structure of the transformer of installed in electric pole
CN104779553A (en) * 2015-03-31 2015-07-15 国网辽宁省电力有限公司辽阳供电公司 Front operating platform for steel tube type pole tower
CN107993805A (en) * 2018-01-24 2018-05-04 安吉晶圣光伏发电有限公司 A kind of convenient fixing device of transformer
KR20190049036A (en) * 2017-11-01 2019-05-09 한국전력공사 Supporting unit for switch
CN111509597A (en) * 2020-04-25 2020-08-07 张文献 Fastening device for power equipment
CN113345680A (en) * 2021-05-31 2021-09-03 王迎 Outdoor oil-immersed transformer convenient to arrange wire harness fixedly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100933458B1 (en) 2009-09-21 2009-12-23 (주)성전엔지니어링 Connected fixtures structure of the transformer of installed in electric pole
CN104779553A (en) * 2015-03-31 2015-07-15 国网辽宁省电力有限公司辽阳供电公司 Front operating platform for steel tube type pole tower
KR20190049036A (en) * 2017-11-01 2019-05-09 한국전력공사 Supporting unit for switch
KR102075824B1 (en) 2017-11-01 2020-02-10 한국전력공사 Supporting unit for switch
CN107993805A (en) * 2018-01-24 2018-05-04 安吉晶圣光伏发电有限公司 A kind of convenient fixing device of transformer
CN107993805B (en) * 2018-01-24 2023-12-22 国网湖北省电力有限公司随州供电公司 Convenient fixing device and method for transformer
CN111509597A (en) * 2020-04-25 2020-08-07 张文献 Fastening device for power equipment
CN113345680A (en) * 2021-05-31 2021-09-03 王迎 Outdoor oil-immersed transformer convenient to arrange wire harness fixedly

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