JP5655340B2 - Electric power cable grounding jig and grounding method - Google Patents

Electric power cable grounding jig and grounding method Download PDF

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Publication number
JP5655340B2
JP5655340B2 JP2010074794A JP2010074794A JP5655340B2 JP 5655340 B2 JP5655340 B2 JP 5655340B2 JP 2010074794 A JP2010074794 A JP 2010074794A JP 2010074794 A JP2010074794 A JP 2010074794A JP 5655340 B2 JP5655340 B2 JP 5655340B2
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Prior art keywords
grounding
power cable
jack
cable
jig
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JP2011211778A (en
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野村 知充
知充 野村
賢之 三宅
賢之 三宅
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JFE Steel Corp
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JFE Steel Corp
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Description

本発明は、電力ケーブルにおける導体を接地する保守作業用治具および接地方法に関するものである。   The present invention relates to a maintenance jig for grounding a conductor in a power cable and a grounding method.

電力ケーブルを敷設して送電を行う送電設備においては、同一の送電線路に複数のケーブルが混在するケースがある。   In a power transmission facility in which a power cable is laid and transmits power, there are cases where a plurality of cables are mixed in the same power transmission line.

このような送電設備において、ある特定のケーブルの中間部で補修作業を行う場合は、
(1)ケーブルに電圧が確実に掛かっていないことを確認できること、
(2)作業が安全に行えるように接地線が確実に取り付けられていること、
が必要である。
In such a power transmission facility, when repair work is performed in the middle part of a specific cable,
(1) Confirm that the voltage is not applied to the cable securely.
(2) The ground wire is securely attached so that the work can be performed safely.
is necessary.

従来は、電圧確認をケーブルチェッカー等により間接的に確認を行った後に、人間が直接、図4に示す絶縁枠の先端に取付けられた接地用の針をケーブルに人力で打込むことで接地線の取付を行っていた。   Conventionally, after confirming the voltage indirectly with a cable checker or the like, the human being directly drives a grounding needle attached to the tip of the insulating frame shown in FIG. Had been installed.

先行技術文献としては、配電機器における接地用治具として特許文献1があるが、ケーブル中間部における取扱いについての先行技術文献は見当たらない。   As a prior art document, there is Patent Document 1 as a grounding jig in a power distribution device, but there is no prior art document regarding handling in a cable middle part.

特開2003−157333号公報JP 2003-157333 A

従来の接地線の取付け方法は、人間が直接治具を操作して行うものであるため、接地線取付け作業中に誤って他の送電中のケーブルに接地用針を打ち込んでしまった場合には、感電災害等の事故となる。   Since the conventional method of attaching the grounding wire is performed by a person operating the jig directly, if the grounding needle is accidentally driven into another cable during power transmission, An accident such as an electric shock disaster.

また、高所に設置されている送電線路においては、接地線を取付ける治具は持ち運びが容易であることが必要である。   In addition, in a transmission line installed at a high place, a jig for attaching a grounding wire needs to be easy to carry.

上記課題を解決するために、電力ケーブル接地用治具および接地方法を提供することを目的とする。   In order to solve the above problems, an object of the present invention is to provide a power cable grounding jig and a grounding method.

発明者等は、上記した課題を解決するため鋭意検討を重ねて、本発明に至ったもので、本発明の要旨は以下の通りである。   The inventors have intensively studied in order to solve the above-described problems and have arrived at the present invention. The gist of the present invention is as follows.

(1)第一の発明は、電力ケーブルの接地用治具であって、油圧ジャッキ部と、接地用針と、接地用リード線と、ジャッキ固定台と、ケーブル固定具とからなることを特徴とする電力ケーブル接地用治具である。   (1) The first invention is a power cable grounding jig comprising a hydraulic jack portion, a grounding needle, a grounding lead wire, a jack fixing base, and a cable fixing tool. This is a power cable grounding jig.

(2)第二の発明は、ジャッキ固定台を電力ケーブルを跨ぐように設置して、ケーブル固定具で電力ケーブルを固定し、前記ジャッキ固定台にジャッキを載せて、接地用リード線を地上に降ろし、前記ジャッキを作動してジャッキ先端に取付けた接地用針を電力ケーブルに打込むことを特徴とする電力ケーブルの接地方法である。   (2) In the second invention, the jack fixing base is installed so as to straddle the power cable, the power cable is fixed with the cable fixing tool, the jack is placed on the jack fixing base, and the grounding lead wire is placed on the ground. The power cable is grounded by lowering and operating the jack and driving a grounding needle attached to the tip of the jack into the power cable.

本発明の治具を用いることで、確実にケーブルへの接地線取付けを行うことができることから、ケーブルの補修作業を安全かつ効率的に実施することが可能となった。   By using the jig of the present invention, it is possible to reliably attach the ground wire to the cable, so that the cable repair work can be carried out safely and efficiently.

本発明の一実施の形態に係る接地線取付け用治具を示す図である。It is a figure which shows the jig | tool for grounding wire attachment which concerns on one embodiment of this invention. 他の実施の形態に係る接地線取付け用治具を示す図である。It is a figure which shows the jig | tool for grounding wire attachment which concerns on other embodiment. ケーブルラックの外観を示す図である。It is a figure which shows the external appearance of a cable rack. 従来技術を示す図である。It is a figure which shows a prior art.

本発明を図を用いて説明する。   The present invention will be described with reference to the drawings.

図3は、ケーブルラック内に複数の電力ケーブルが敷設されている状態を示しており、
補修対象となる電力ケーブルを選別して補修箇所に接地用治具を設置する。
FIG. 3 shows a state where a plurality of power cables are laid in the cable rack.
Select the power cable to be repaired and install a grounding jig at the repair location.

図1が接地用治具を電力ケーブルに取付けた状態を示すものである。
ジャッキ固定台4を電力ケーブル5の補修箇所に設置する。ジャッキ固定台4にはケーブル固定治具8が取付けられており、これにより電力ケーブル5が固定される。
ジャッキ固定台4の上に油圧ジャッキ本体1aを載置する。
油圧ジャッキ本体1aにはケーブル接地用の針2が取付けられており、油圧を作動することにより接地用針2がケーブル5の被覆層を貫通し、ケーブル導体6に接触し固定される。接地用針2は接地用リード線3に接続しているので、電力ケーブルはアースされることとなる。
FIG. 1 shows a state where a grounding jig is attached to a power cable.
The jack fixing base 4 is installed at the repaired portion of the power cable 5. A cable fixing jig 8 is attached to the jack fixing base 4, whereby the power cable 5 is fixed.
The hydraulic jack body 1a is placed on the jack fixing base 4.
A cable grounding needle 2 is attached to the hydraulic jack main body 1a, and the grounding needle 2 penetrates the coating layer of the cable 5 and contacts and is fixed to the cable conductor 6 by operating the hydraulic pressure. Since the grounding needle 2 is connected to the grounding lead wire 3, the power cable is grounded.

油圧ジャッキ部1は、油圧ジャッキ本体1aと、絶縁耐圧ホース1bおよびジャッキ取手握り棒1cから成り、この絶縁耐圧ホース1bはジャッキ操作者が感電等の危険に会わない場所で操作できるように6m以上の長さを有している。また、本発明の接地用治具は持ち運びが容易であり、電力ケーブル5に近づくことなく安全に接地用針2を電力ケーブルに打込むことができる。これにより、人力によって絶縁棒の先端に取付けられた接地用針(図4)をケーブルに打込む等の危険作業から作業者を解放できる。   The hydraulic jack section 1 is composed of a hydraulic jack main body 1a, an insulation pressure resistant hose 1b, and a jack handle gripping rod 1c. Has a length of In addition, the grounding jig of the present invention is easy to carry and can safely drive the grounding needle 2 into the power cable without approaching the power cable 5. Thereby, an operator can be released from dangerous work such as driving a grounding needle (FIG. 4) attached to the tip of the insulating rod by hand.

図2は、本発明の第2の実施の形態に係るもので、補修する電力ケーブル5がラック底部から浮き上がっている場合等では、電力ケーブル5をチェーン20とケーブル保持具21とによってジャッキ固定台4に固定できるようにしたものである。この場合においてチェーン20に代えてUボルトで固定することもできる。   FIG. 2 relates to the second embodiment of the present invention. When the power cable 5 to be repaired is lifted from the bottom of the rack, the power cable 5 is connected to the jack fixing base by the chain 20 and the cable holder 21. It can be fixed to 4. In this case, the chain 20 can be replaced with a U-bolt.

1 油圧ジャッキ部
1a ジャッキ本体
1b 絶縁耐圧ホース
1c ジャッキ取手握り棒
2 ケーブル接地用針
3 接地用リード線
4 ジャッキ固定台
5 ケーブル
6 ケーブル導体
7 ラック架台
8 ケーブル固定治具
10 ケーブルラック
20 チェーン
21 ケーブル保持具
DESCRIPTION OF SYMBOLS 1 Hydraulic jack part 1a Jack main body 1b Insulation pressure hose 1c Jack grip handle 2 Cable grounding needle 3 Grounding lead wire 4 Jack fixing stand 5 Cable 6 Cable conductor 7 Rack stand 8 Cable fixing jig 10 Cable rack 20 Chain 21 Cable Retainer

Claims (2)

電力ケーブルの接地用治具であって、油圧ジャッキ本体を有する油圧ジャッキ部と、前記油圧ジャッキの先端に取り付けられ、前記油圧ジャッキの油圧作動により電力ケーブルに打ち込まれる接地用針と、前記接地用針に接続される接地用リード線と、前記油圧ジャッキを載せて、電力ケーブルを跨ぐように設置されるジャッキ固定台と、前記ジャッキ固定台に取り付けられて、電力ケーブルを固定するケーブル固定具とからなることを特徴とする電力ケーブル接地用治具。 A power cable grounding jig , a hydraulic jack portion having a hydraulic jack body, a grounding needle attached to a tip of the hydraulic jack and driven into the power cable by hydraulic operation of the hydraulic jack, and the grounding A grounding lead wire connected to the needle, a jack fixing base placed on the power cable so as to straddle the power cable, and a cable fixing member that is attached to the jack fixing base and fixes the power cable ; A power cable grounding jig comprising: ジャッキ固定台を電力ケーブルを跨ぐように設置して、ケーブル固定具で電力ケーブルを固定し、前記ジャッキ固定台にジャッキを載せて、接地用リード線を地上に降ろし、前記ジャッキを作動してジャッキ先端に取付けた接地用針を電力ケーブルに打込むことを特徴とする電力ケーブルの接地方法。 Install the jack fixing base so as to straddle the power cable, fix the power cable with the cable fixing tool, place the jack on the jack fixing base, lower the grounding lead wire to the ground, operate the jack to jack the jack A grounding method for a power cable, wherein a grounding needle attached to the tip is driven into the power cable.
JP2010074794A 2010-03-29 2010-03-29 Electric power cable grounding jig and grounding method Active JP5655340B2 (en)

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CN103346509B (en) * 2013-07-23 2016-05-04 国家电网公司 The charged mounting process of a kind of coaxial fitting
CN110048243B (en) * 2019-04-23 2020-06-26 常熟理工学院 Full-automatic grounding device for cable repair

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JPS6216689Y2 (en) * 1980-04-21 1987-04-27
JP2009290983A (en) * 2008-05-29 2009-12-10 Chugoku Electric Power Co Inc:The Ground short-circuit fitting

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