JP3352077B2 - Contact detection type clamp - Google Patents
Contact detection type clampInfo
- Publication number
- JP3352077B2 JP3352077B2 JP2000297783A JP2000297783A JP3352077B2 JP 3352077 B2 JP3352077 B2 JP 3352077B2 JP 2000297783 A JP2000297783 A JP 2000297783A JP 2000297783 A JP2000297783 A JP 2000297783A JP 3352077 B2 JP3352077 B2 JP 3352077B2
- Authority
- JP
- Japan
- Prior art keywords
- main electrode
- electrode
- conductor
- screw rod
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Leads Or Probes (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Electric Cable Installation (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、高圧配電線路の
無停電工事において、バイパス回路を構築する際に、架
空配電線の被覆の上から直接接続できるように工夫した
接触検知式クランプの構造に関するものである。
【０００２】
【従来の技術】従来、この種のクランプは、クランプの
主電極が架空配電線の導体と接触しているかどうかを検
知するために、前記主電極から数ミリ〜数センチ離隔し
て、検知電極を併設し、主電極と検知電極とが架空配電
線の絶縁体を貫通しながら、架空配電線の導体に同時に
接触し、また導体から離れるときも、同時に離れるとい
う構造であったので、次のような問題があった。
【０００３】架空配電線の絶縁体を貫通しながら、架空
配電線の導体に接近する場合には、クランプの主電極及
び検知電極と架空配電線の導体間には絶縁体が介在して
いるので、それほど問題はなかったが、一旦接触する
と、主電極及び検知電極と架空配電線の導体間には絶縁
体の介在がなくなり、接触状態から主電極及び検知電極
を離隔すると、導体と主電極及び検知電極間にア−クが
発生し、検知電極を通じて、電流容量が小さい検知回路
に大電流が流れ、検知回路を焼損するという問題があっ
た。
【０００４】
【発明が解決しようとする課題】この発明は、従来の技
術で記述した問題を解消するためになされたもので、検
知電極を離隔する際、検知電極と絶縁電線の導体間での
ア−クの発生を抑制することができる接触検知式クラン
プの提供を目的とするものである。
【０００５】
【課題を解決するための手段】電流容量が大きいクラ
ンプの主電極が、絶縁電線の導体に接触したのち、遅れ
て検知電極を接触させるようにする。
接触状態から主電極及び検知電極を離隔する際には、
検知電極を先に離隔させたのち、遅れて主電極を離隔さ
せる。
【０００６】
【発明の実施の形態】この発明の実施の形態の一例を図
１〜図２を参照しながら説明する。図１〜図２におい
て、１はクランプの主電極であり、本例では環状型の電
極の場合を示している。なお、主電極１は、環状型に限
定されるものではなく、針状電極等も使用できる。
【０００７】２は検知電極で、絶縁体からなるネジ棒３
の先端部に、環状の主電極１の中央部に位置するように
配置されている。
【０００８】ネジ棒３の下部には雄ネジ４が刻設され、
この雄ネジ４はクランプ本体Ａの基部の支持部材５に刻
設した雌ネジ６に螺合している。したがって、ネジ棒３
を回すと、ネジ棒３は上下に移動できるようになってい
る。
【０００９】ネジ棒３の雄ネジ４の上端よりも若干上部
に位置するネジ棒３に突設部７を設け、この突設部と主
電極１の下端との間に、スプリング８を装着し、主電極
１に常時押し上げ力を付勢し、クランプを使用しないと
きには、図１に示すように、検知電極２が、常に主電極
１の下方に位置するようになっている。
【００１０】主電極１はキ−９で上下移動可能にクラン
プ本体Ａに電気的に接続されている。一方検知電極２は
ネジ棒３の中心部に装着された導体１０を介して、ネジ
棒３を回転させるための金具１１に接続されている。
【００１１】検知回路１２は前記金具１１とクランプ本
体Ａの間に挿入され、主電極１と検知電極２が絶縁電線
１３の導体１４に接触すると、閉回路を構成し、作動す
るようになっている。
【００１２】金具１１を回して、ネジ棒３を上方へ移動
させると、主電極１と検知電極２は上方へ移動するが、
主電極１の方が、検知電極２よりも上方へ位置している
ので、まず主電極１が絶縁電線１３の絶縁体を貫通し導
体１４に達する。
【００１３】さらに、ネジ棒３を回すと、スプリング８
が縮まり、検知電極２が絶縁電線１３の絶縁体を貫通し
導体１４に達し、主電極１と検知電極２は導体１４を介
して電気的に接続され、検知回路１２が閉回路となり、
検知回路１２は作動し、主電極１が絶縁電線１３の導体
１４に接触したことランプの点滅等で知らせる。
【００１４】つぎに、絶縁電線１３の導体１４と主電極
１及び検知電極２との接触を解除する場合、ネジ棒３を
前述とは逆方向に回転すると、検知電極２は直ちに下方
に移動し導体１３から離れるが、主電極１はスプリング
８によって押し上げられているので、スプリング８の押
し上げ力が作用しなくなるまで、導体１３との接触を継
続する。
【００１５】このとき、検知電極２は検知回路１２を介
して導体１４に接触している主電極１に接続されている
ので、導体１４から離れつつある検知電極２の電位は、
導体１４の電位と同電位になり、検知電極２と導体１４
との間に電位差が生じないので、検知電極２と導体１４
との間にア−クは発生しない。
【００１６】
【発明の効果】この発明は上述のように構成され、検知
電極を絶縁電線の導体から離隔させるときに発生するア
−クを抑制することができるので、電流容量が小さい検
知回路に大電流が流れ、検知回路を焼損するという不具
合を防止することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply system for a high-voltage distribution line, in which, when a bypass circuit is constructed, it is possible to directly connect the overhead distribution line over the covering of the overhead distribution line. The present invention relates to a structure of a contact detection type clamp devised as described above. [0002] Conventionally, this type of clamp is separated from the main electrode by several millimeters to several centimeters in order to detect whether or not the main electrode of the clamp is in contact with the conductor of the overhead distribution line. The main electrode and the detection electrode were simultaneously attached to the conductor of the overhead distribution line while penetrating the insulator of the overhead distribution line, and also separated when the conductor was separated from the conductor. There were the following problems. When the conductor of the overhead distribution line is approached while penetrating the insulator of the overhead distribution line, the insulator is interposed between the main electrode and the sensing electrode of the clamp and the conductor of the overhead distribution line. Although there was not much problem, once contacted, there was no intervening insulator between the main electrode and the sensing electrode and the conductor of the overhead distribution line, and when the main electrode and the sensing electrode were separated from the contact state, the conductor, the main electrode and Arcs are generated between the detection electrodes, and a large current flows through the detection electrodes to a detection circuit having a small current capacity, thereby burning the detection circuit. SUMMARY OF THE INVENTION [0004] The present invention has been made to solve the problems described in the prior art, and when separating the sensing electrode, the distance between the sensing electrode and the conductor of the insulated wire is reduced. It is an object of the present invention to provide a contact detection type clamp capable of suppressing the occurrence of arc. The main electrode of the clamp having a large current capacity is brought into contact with the conductor of the insulated wire and then the detection electrode is contacted with a delay. When separating the main electrode and the detection electrode from the contact state,
After separating the detection electrode first, the main electrode is separated with a delay. An embodiment of the present invention will be described with reference to FIGS. 1 and 2, reference numeral 1 denotes a main electrode of a clamp, and in this example, an annular electrode is shown. In addition, the main electrode 1 is not limited to an annular type, and a needle electrode or the like can be used. Reference numeral 2 denotes a sensing electrode, which is a screw rod 3 made of an insulator.
At the center of the ring-shaped main electrode 1. [0008] At the lower part of the screw rod 3, a male screw 4 is engraved.
The male screw 4 is screwed into a female screw 6 engraved on a support member 5 at the base of the clamp body A. Therefore, screw rod 3
By turning, the screw rod 3 can move up and down. A projecting portion 7 is provided on the screw bar 3 slightly above the upper end of the male screw 4 of the screw bar 3, and a spring 8 is mounted between the projecting portion and the lower end of the main electrode 1. When the main electrode 1 is constantly pushed up and the clamp is not used, the detecting electrode 2 is always positioned below the main electrode 1 as shown in FIG. The main electrode 1 is electrically connected to the clamp body A by a key 9 so as to be vertically movable. On the other hand, the detection electrode 2 is connected to a metal fitting 11 for rotating the screw rod 3 via a conductor 10 attached to the center of the screw rod 3. The detection circuit 12 is inserted between the metal fitting 11 and the clamp body A. When the main electrode 1 and the detection electrode 2 come into contact with the conductor 14 of the insulated wire 13, a closed circuit is formed and the circuit is activated. I have. When the metal rod 11 is turned to move the screw rod 3 upward, the main electrode 1 and the detection electrode 2 move upward.
Since the main electrode 1 is located above the detection electrode 2, the main electrode 1 first reaches the conductor 14 through the insulator of the insulated wire 13. When the screw rod 3 is further turned, the spring 8
The detection electrode 2 penetrates through the insulator of the insulated wire 13 to reach the conductor 14, the main electrode 1 and the detection electrode 2 are electrically connected via the conductor 14, and the detection circuit 12 becomes a closed circuit,
The detection circuit 12 operates, and notifies that the main electrode 1 has contacted the conductor 14 of the insulated wire 13 by blinking a lamp or the like. Next, when releasing the contact between the conductor 14 of the insulated wire 13 and the main electrode 1 and the detection electrode 2, when the screw rod 3 is rotated in the opposite direction to the above, the detection electrode 2 immediately moves downward. Although separated from the conductor 13, since the main electrode 1 is pushed up by the spring 8, the contact with the conductor 13 is continued until the pushing force of the spring 8 stops acting. At this time, since the detection electrode 2 is connected to the main electrode 1 which is in contact with the conductor 14 via the detection circuit 12, the potential of the detection electrode 2 moving away from the conductor 14 becomes
The potential becomes the same as the potential of the conductor 14, and the detection electrode 2 and the conductor 14
No potential difference occurs between the sensing electrode 2 and the conductor 14.
There is no arc between the two. According to the present invention, as described above, the arc generated when the detection electrode is separated from the conductor of the insulated wire can be suppressed, so that the detection circuit having a small current capacity can be provided. A problem that a large current flows and burns out the detection circuit can be prevented.
【図面の簡単な説明】
【図１】実施の一例を示す一部切欠正面図
【図２】図１において、ネジ棒を回転させ、主電極と検
知電極を絶縁電線の導体に接触させた状態を示す一部切
欠正面図
【符号の説明】
１ 主電極
２ 検知電極
３ ネジ棒
４ 雄ネジ
５ 支持部材
６ 雌ネジ
７ 突設部
８ スプリング
９ キ−
１０ 導体
１１ 金具
１２ 検知回路
１３ 絶縁電線
１４ 絶縁電線の導体
１５ バイパスケ−ブルBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway front view showing an embodiment; FIG. 2 is a state in which a screw rod is rotated in FIG. 1 to bring a main electrode and a detection electrode into contact with a conductor of an insulated wire; [Description of Signs] 1 Main electrode 2 Detecting electrode 3 Screw rod 4 Male screw 5 Support member 6 Female screw 7 Projection 8 Spring 9 Key 10 Conductor 11 Metal fitting 12 Detection circuit 13 Insulated wire 14 Insulated wire conductor 15 Bypass cable
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０１Ｒ 13/53 Ｈ０１Ｒ 13/53 31/02 31/02 Ａ Ｈ０２Ｇ 7/00 ３０１ Ｈ０２Ｇ 7/00 ３０１Ｎ // Ｇ０１Ｒ 15/06 Ｇ０１Ｒ 15/04 Ａ (72)発明者 前田 匡章 大阪府大阪市北区中之島３丁目３番22号 関西電力株式会社内 (72)発明者 時政 成吾 大阪府大阪市北区中之島３丁目３番22号 関西電力株式会社内 (72)発明者 明橋 秀典 大阪府大阪市北区本庄東２丁目３番41号 株式会社きんでん内 (72)発明者 宮本 誠 大阪府大阪市北区本庄東２丁目３番41号 株式会社きんでん内 (72)発明者 佐藤 雄一 大分県大分市大字駄原2899番地西日本電 線株式会社内 (72)発明者 牧 秀一 大分県大分市大字駄原2899番地西日本電 線株式会社内 (72)発明者 藍京 英則 大分県大分市大字駄原2899番地西日本電 線株式会社内 (56)参考文献 特開 平11−185853（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02G 1/02 309 G01R 1/067 H01R 11/14 H01R 4/24 H01R 13/53 H01R 31/02 H02G 7/00 G01R 15/06 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI H01R 13/53 H01R 13/53 31/02 31/02 A H02G 7/00 301 H02G 7/00 301N // G01R 15/06 G01R 15/04 A (72) Inventor Masaaki Maeda 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Inside Kansai Electric Power Co., Inc. (72) Inventor Seigo Tokimasa 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc. (72) Inventor Hidenori Akehashi 2-3-1, Honjohigashi, Kita-ku, Osaka, Osaka Kindennai (72) Inventor Makoto Miyamoto 2-3-3 Honjohigashi, Kita-ku, Osaka, Osaka No. 41 Kindenchi Co., Ltd. (72) Inventor Yuichi Sato 2899 Ohara, Oita City, Oita Prefecture West Nippon Electric Line Co., Ltd. In-company (72) Inventor Hidenori Aikyo 2899 Ohara, Oita City, Oita Prefecture Inside Nishi Nippon Line Co., Ltd. (56) References JP-A-11-185853 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H02G 1/02 309 G01R 1/067 H01R 11/14 H01R 4/24 H01R 13/53 H01R 31/02 H02G 7/00 G01R 15/06
Claims (1)
上下移動可能にクランプ本体（Ａ）に電気的に接続し、
検知電極（２）を前記主電極（１）よりも下方に位置さ
せ、該主電極（１）の中央部に位置するように配置し、
絶縁体からなるネジ棒（３）の先端部に固定し、該ネジ
棒（３）の中心部に装着した導体（１０）を介して、前
記ネジ棒（３）を回転させる金具（１１）に接続し、前
記ネジ棒（３）の下部に、前記クランプ本体（Ａ）の基
部の支持部材（５）に刻設した雌ネジ（６）に螺合し、
前記金具（１１）を回転させることにより、前記ネジ棒
（３）の上下移動を可能にする雄ネジ（４）を刻設し、
該雄ネジ（４）の上端よりも若干上部に位置する前記ネ
ジ棒（３）に突設部（７）を設け、該突設部（７）と前
記主電極（１）の下端との間に、該主電極（１）に常時
押し上げ力を付勢し、クランプを使用しないときには、
前記検知電極（２）を常に前記主電極（１）の下方に位
置させるためのスプリング（８）を装着し、前記主電極
（１）と前記検知電極（２）とが、前記クランプ本体
（Ａ）に装着された絶縁電線（１３）の導体（１４）に
接触することにより閉回路となり、作動する検知回路
（１２）を前記金具（１１）と前記クランプ本体（Ａ）
の間に挿入したことを特徴とする接触検知式クランプ(57) Claims: An annular main electrode (1) is electrically connected to a clamp body (A) by a key (9) so as to be vertically movable,
The detection electrode (2) is located below the main electrode (1), and is disposed so as to be located at the center of the main electrode (1);
A metal fitting (11) fixed to the tip of a screw rod (3) made of an insulator and rotating the screw rod (3) via a conductor (10) attached to the center of the screw rod (3). Connected to a female screw (6) engraved on a support member (5) at the base of the clamp body (A) at the lower part of the screw rod (3),
By turning the metal fitting (11), a male screw (4) that allows the screw bar (3) to move up and down is engraved,
A projecting portion (7) is provided on the screw rod (3) located slightly above the upper end of the male screw (4), and between the projecting portion (7) and the lower end of the main electrode (1). In addition, when the main electrode (1) is constantly urged with a pushing force and the clamp is not used,
A spring (8) for always positioning the detection electrode (2) below the main electrode (1) is attached, and the main electrode (1) and the detection electrode (2) are connected to the clamp body (A). ) Comes into contact with the conductor (14) of the insulated wire (13) to form a closed circuit, and the operating detection circuit (12) is connected to the metal fitting (11) and the clamp body (A).
Contact detection type clamp, inserted between
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000297783A JP3352077B2 (en) | 2000-09-29 | 2000-09-29 | Contact detection type clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000297783A JP3352077B2 (en) | 2000-09-29 | 2000-09-29 | Contact detection type clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002112420A JP2002112420A (en) | 2002-04-12 |
| JP3352077B2 true JP3352077B2 (en) | 2002-12-03 |
Family
ID=18779853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000297783A Expired - Fee Related JP3352077B2 (en) | 2000-09-29 | 2000-09-29 | Contact detection type clamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3352077B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200448770Y1 (en) | 2008-03-25 | 2010-05-24 | 주식회사 웨어리드 | A probe for measuring apparatus |
| CN102842782A (en) * | 2012-09-18 | 2012-12-26 | 四川省电力公司绵阳电业局 | Grounding wire operation rod |
| CN103618266A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Electrifying defect eliminating tool of drainage plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456563C (en) * | 2006-08-25 | 2009-01-28 | 江苏省电力公司常州供电公司 | Penetrating cable clamp |
| JP5371793B2 (en) * | 2010-01-08 | 2013-12-18 | 中国電力株式会社 | Voltage measurement aid |
| CN104134878A (en) * | 2014-08-13 | 2014-11-05 | 国家电网公司 | Novel electrified early-warning ground wire |
| CN106486920A (en) * | 2015-09-02 | 2017-03-08 | 中国电力科学研究院 | Extra high voltage line wire jumper drainage plate loose contact electrical treatment device and processing method |
| JP2018204963A (en) * | 2017-05-30 | 2018-12-27 | 日置電機株式会社 | Sensor and measurement device |
| CN107516779B (en) * | 2017-09-30 | 2021-12-03 | 国网冀北电力有限公司唐山供电公司 | 10KV configuration temporary wiring structure and wiring method |
-
2000
- 2000-09-29 JP JP2000297783A patent/JP3352077B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200448770Y1 (en) | 2008-03-25 | 2010-05-24 | 주식회사 웨어리드 | A probe for measuring apparatus |
| CN102842782A (en) * | 2012-09-18 | 2012-12-26 | 四川省电力公司绵阳电业局 | Grounding wire operation rod |
| CN103618266A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Electrifying defect eliminating tool of drainage plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002112420A (en) | 2002-04-12 |
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