JP2001298818A - Connecting clamp for pdc wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting clamp which is light, and excellent in labor saving, safety, disburdening workers and standardization, at a connecting spot of a covered electric wire. SOLUTION: This connecting clamp 1 is provided for cutting off the covering of a covered electric wire (a) in a hot-line state in an overhead distribution line strung on utility poles, inserting the wire (a) into the electric wire (b) and connecting it. The connecting clamp 1 has a cutting-off and touching mechanism fitted with a plurality of electrodes excellent in conductivity and provided with cutting-off blades for cutting off the covering of the covered wire (a), inserting portions which are inserted loosely along the periphery of the electric wire (b), and inserting grooves which come in contact with the wire surface without damaging it; a pair of upper and lower grasping mechanisms which grasps the wire (a) at the shaft center by an upper wire pressing groove 4 which temporarily positions the electrodes and covered wire always to the shaft center, and a lower wire pressing groove 8 which functions with the insertion movement of the electrodes to the periphery of the wire; and a constant torque mechanism which moves the electrodes by rotation operation and cuts off the covering, and performs confirmation of unusual insertion load into the wire and connection.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】この発明は、電柱に装架されてい
る架空配電線路において活線状態で絶縁被覆された電線
又はケーブルの被覆に電極を挿通させ電線と接触し、変
圧器、開閉器および他の支持物の取付、取替へのための
バイパス回路、接地回路に用い無停電作業における安全
性を高め、効率的に実施できる接続クランプに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead distribution line mounted on a utility pole, in which an electrode is inserted into a wire or cable sheath insulated and coated in a live state to make contact with the wire, thereby forming a transformer, a switch and the like. Also, the present invention relates to a connection clamp that can be used in a bypass circuit and a grounding circuit for mounting and replacing other supports and a grounding circuit to enhance safety in an uninterrupted operation and to implement the connection clamp efficiently.

【０００２】[0002]

【従来の技術】従来、架空配電線路における被覆電線の
活線状態でバイパス回路を接続する場合、被覆電線の接
続点を活線工具で被覆を剥ぎ取り、露出した電線に締付
ボルトを備えたクランプにより把持するか、被覆電線の
被覆の上から針状又は棒状の電極により押し込み、電極
の先端部と電線表面に接触させ接続させている。近年無
停電作業においてバイパス回路にて接続し、当該区間の
変圧器、開閉器等の取替が増大しており、接続作業にお
ける被覆の剥ぎ取り作業の省力化、針状又は棒状の電極
による接触および接続確認の安定と確認方法を含め電線
表面を傷めない接続クランプが必要になってきている。2. Description of the Related Art Conventionally, when a bypass circuit is connected in a live state of an insulated wire in an overhead distribution line, the connection point of the insulated wire is stripped with a hot wire tool, and a bolt is provided on the exposed wire. It is gripped by a clamp or pushed in with a needle-shaped or rod-shaped electrode from above the covering of the covered electric wire, and brought into contact with the tip of the electrode and the surface of the electric wire for connection. In recent years, in the uninterruptible work, the connection by the bypass circuit has been increasing, and the replacement of the transformer, switch, etc. in the section has been increasing, the labor of stripping the coating in the connection work has been reduced, and the contact by the needle or rod-shaped electrode There is also a need for a connection clamp that does not damage the wire surface, including the stability of the connection check and the method of checking the connection.

【０００３】[0003]

【発明が解決しようとする課題】この発明はこのような
事情を鑑みなされたものであり、その目的は被覆電線の
接続個所において当該被覆電線を把持し常に被覆電線の
被覆を切除し、軸芯にある電線に電極を挿入、接触、接
続し、あわせ電極の移動は作業者の回転操作により一定
のトルクを伝達させ被覆電線の把持、被覆の切除、電線
への挿通過負荷および接触、接続の完了を回転操作で確
認可能であり、接続において軽量、省力化および安全性
を高め、作業者の作業軽減、標準化に優れた接続クラン
プを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to grasp a covered wire at a connection point of the covered wire, and always cut off the covering of the covered wire, thereby obtaining a shaft core. The electrodes are inserted, contacted, and connected to the electric wire at the same time, and the movement of the electrode transmits a constant torque by the rotation operation of the operator, grips the coated electric wire, cuts off the coating, inserts the load through the electric wire and makes contact and connection. The object of the present invention is to provide a connection clamp that can be checked for completion by a rotating operation, is lightweight, saves labor and increases safety in connection, reduces the work of an operator, and is excellent in standardization.

【０００４】[0004]

【課題を解決するための手段】本ＰＤＣ線接続クランプ
においては、接続点での被覆電線を仮位置に設定、把持
し常に被覆電線と軸芯にある電線を固定する把持機構
と、回転操作により被覆を切除、軸芯にある電線を遊
通、接触させる電極を備えた切除、接触機構と、作業者
の回転操作により被覆切除、電線遊通による負荷異常と
接続の確認がおこなえる定トルク機構とを備え、無停電
作業が省力化、安全性および接続作業における軽量化が
計れるようになっている。In the present PDC wire connection clamp, a gripping mechanism for setting and gripping the insulated wire at a connection point at a temporary position, and always fixing the insulated wire and the wire on the shaft core, and a rotating operation. A cutting and contact mechanism with an electrode that cuts the sheath, passes the wire on the shaft core and makes contact with it, and a constant torque mechanism that allows the operator to rotate the sheath to cut the sheath, check the load abnormality due to the wire passing, and check the connection The uninterruptible work can be labor-saving, and the safety and the weight of the connection work can be reduced.

【０００５】[0005]

【発明の実施の形態】次に、この発明に係るＰＤＣ線接
続クランプの実施例について図面を参照しながら以下に
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a PDC line connection clamp according to the present invention will be described below with reference to the drawings.

【０００６】図１は接続クランプ（１）、アダプタ
（２）、操作棒ｄの実施例である側面図、図２はその正
面図である。上部に絶縁カバー（３）を覆せた接続クラ
ンプ（１）、下部にはバイパス線となるリード線ｃ、お
よび電線押え（５）を上下移動させるネジ軸（６）、そ
の下端には操作棒ｄに接合されたアダプタ（２）を連結
金具（７）に連結することになり、作業者は操作棒ｄを
回転操作することにより接合されたアダプタ（２）、連
結された連結金具（７）、ネジ軸（６）が回転、電線押
え（５）が上移動し、上押え溝（４）に挿入された被覆
電線ａを電線押え（５）の上部にある下押え溝（８）に
より把持、接続することになり、操作棒ｄを逆回転させ
ることにより電線押え（５）が下降すなわち被覆電線ａ
を開放する。FIG. 1 is a side view showing an embodiment of a connection clamp (1), an adapter (2) and an operating rod d, and FIG. 2 is a front view thereof. A connection clamp (1) covered with an insulating cover (3) at an upper part, a lead wire c serving as a bypass line, and a screw shaft (6) for vertically moving an electric wire holder (5) at a lower part, and an operating rod d at a lower end thereof. The adapter (2) joined to the connector (7) is connected to the connecting fitting (7), and the operator rotates the operating rod d to connect the adapter (2), the connected connecting fitting (7), The screw shaft (6) rotates, the wire retainer (5) moves upward, and the insulated wire a inserted into the upper retainer groove (4) is gripped by the lower retainer groove (8) above the wire retainer (5). When the operation rod d is rotated in the reverse direction, the wire retainer (5) is lowered, that is, the coated wire a
To release.

【０００７】図３は被覆電線ａを接続クランプ（１）に
て接続、アダプタ（２）を取外し、被覆電線ａの接続点
において吊架された接続クランプ（１）の正面図であり
バイパス回路として電線ｂ、接続クランプ（１）、リー
ド線ｃへの通電している実施例を示す正面図である。FIG. 3 is a front view of the connection clamp (1) suspended at the connection point of the covered wire a by connecting the covered wire a with the connection clamp (1), removing the adapter (2), and forming a bypass circuit. It is a front view which shows the Example which supplies with electricity to the electric wire b, the connection clamp (1), and the lead wire c.

【０００８】図４は接続クランプ（１）の一部破断側面
図、図５は正面一部破断正面図を示す。連結金具（７）
の回転によりネジ軸（６）が上移動し、先端部の移動金
具（１０）を押し上げ電極（９）および併設するリード
接続金具（１１）、リード端子ｅ、リード線ｃが同移動
する。電線押え（５）は移動金具（１０）に設けられた
１対のピン（１３）に挿入され、スプリング（１２）に
より常に電線押え（５）を押し上げ移動金具（１０）上
移動に伴ない電極（９）より先行上移動し下押え溝
（８）に被覆電線ａ接触後はピン（１３）を摺動、スプ
リング（１２）の圧縮力により被覆電線ａを把持するこ
とになる。FIG. 4 is a partially cutaway side view of the connection clamp (1), and FIG. 5 is a partially cutaway front view of the front. Connection bracket (7)
As a result, the screw shaft (6) moves upward, and the moving metal fitting (10) at the distal end is pushed up to move the electrode (9), the attached lead connecting metal fitting (11), the lead terminal e, and the lead wire c. The wire retainer (5) is inserted into a pair of pins (13) provided on the moving bracket (10), and the wire retainer (5) is always pushed up by the spring (12) to move the electrode along with the movement of the moving bracket (10). (9) After moving forward and contacting the insulated wire a with the lower holding groove (8), the pin (13) slides, and the insulated wire a is gripped by the compressive force of the spring (12).

【０００９】図６は被覆電線ａの接続点において電極
（９）により電線ｂに挿入接続、吊架された一部破断正
面図であり、電極（９）、リード接続金具（１１）、リ
ード端子ｅは、導電性に優れた材料を用い、他は絶縁材
料で形成されている。FIG. 6 is a partially cutaway front view in which the wire (b) is inserted and connected to the wire (b) at the connection point of the coated wire (a) and suspended therefrom. The electrode (9), the lead fitting (11), and the lead terminal are shown. e is made of a material having excellent conductivity, and the other is formed of an insulating material.

【００１０】図７はアダプタ（２）の半断面図を示し、
下端には操作棒ｄと接合する連結軸（１９）と上部には
連結金具（２２）に複数の鋼球（２０）と鋼球（２０）
を押し広げるスプリング（２１）を形成した連結金具
（２２）を挿入し連結軸（１９）の内面と上述する鋼球
（２０）の摩擦力すなわちスプリング（２１）押し広げ
る力により一定の回転力を調整し伝達することになる。
連結金具（２２）の上部には１対の連結ピン（２３）、
上部にはスプリングＡ（２５）に常に押し上げられたス
ライド軸（２４）があり連結金具（７）へ挿入、結合時
回転操作により連結ピン（２３）が連結ピン溝（１４）
から外れないようになっている。FIG. 7 shows a half sectional view of the adapter (2).
A plurality of steel balls (20) and a plurality of steel balls (20) are provided on a connection shaft (19) at the lower end and a connection fitting (22) on the upper side.
A metal fitting (22) formed with a spring (21) for pushing and spreading is inserted, and a constant rotational force is generated by the frictional force between the inner surface of the connecting shaft (19) and the steel ball (20), that is, the force for spreading the spring (21). Coordinate and communicate.
A pair of connecting pins (23) are provided on the upper part of the connecting fitting (22),
At the upper part, there is a slide shaft (24) constantly pushed up by a spring A (25). The slide shaft (24) is inserted into the connection fitting (7), and the connection pin (23) is rotated by a coupling operation to connect the connection pin groove (14).
Not to come off.

【００１１】図８は電極（９）の正面拡大図、図９は側
面拡大図を示し、先端部には被覆電線ａの被覆を切断す
る左右対象の切除刃（１５）、切除角（１８）、電線ｄ
を遊通する挿入部（１６）、接続する挿入溝（１７）を
有している。図１０、図１１、図１２は電極（９）の上
移動により被覆電線ａの被覆を切除、挿入、接触した状
態の正面図を示し、被覆電線ａの接続点に接続クランプ
（１）の上押え溝（４）に合わせ、電極（９）の上移動
により電線押え（５）が先行移動下押え溝（８）により
被覆電線ａを把持し、電極（９）の連続上移動により被
覆を切削し、電線ｂへ遊通、接触、接続させ図１に示す
アダプタ（２）操作棒ｄを取り外すことにより、図３の
接続クランプ（１）が被覆電線ａの接続点において固
定、吊架する実施例である。FIG. 8 is an enlarged front view of the electrode (9), and FIG. 9 is an enlarged side view of the electrode (9). , Electric wire d
And an insertion groove (17) for connection. FIGS. 10, 11 and 12 show front views of a state in which the sheath of the covered electric wire a has been cut, inserted and contacted by the upward movement of the electrode (9). In accordance with the holding groove (4), the wire presser (5) grips the covered electric wire a by the preceding moving lower holding groove (8) by moving up the electrode (9), and cuts the coating by the continuous upward movement of the electrode (9). Then, the connection clamp (1) of FIG. 3 is fixed and suspended at the connection point of the insulated wire a by removing the adapter (2) operating rod d shown in FIG. It is an example.

【００１２】[0012]

【発明の効果】この発明は上記のように被覆電線の接続
点において被覆を剥ぐことなく被覆を切除、電線に挿
通、接触、接続する電極、被覆電線を把持、電線の軸芯
を一定し接続、吊架させ、作業者の回転操作により操作
の負荷異常および接続の確認が可能な安全性を高め、効
率的に無停電作業のバイパス回路、接地回路の接続機材
の改善に優れた効果を有している。As described above, according to the present invention, the coating is cut off at the connection point of the coated electric wire without peeling the coating, the electrode to be inserted into, contacted with, and connected to the electric wire, the coated electric wire is gripped, and the axis of the electric wire is fixed and connected. It is possible to check the abnormal operation load and the connection by the operator's rotation operation, and to improve the safety of the operation. are doing.

【図面の簡単な説明】[Brief description of the drawings]

【図１】ＰＤＣ線接続クランプの側面図である。FIG. 1 is a side view of a PDC line connection clamp.

【図２】ＰＤＣ線接続クランプの正面図である。FIG. 2 is a front view of a PDC line connection clamp.

【図３】ＰＤＣ線接続クランプ接続後の正面図である。FIG. 3 is a front view after connection of a PDC line connection clamp.

【図４】ＰＤＣ線接続クランプの一部破断側面図であ
る。FIG. 4 is a partially cutaway side view of the PDC line connection clamp.

【図５】ＰＤＣ線接続クランプの一部破断正面図であ
る。FIG. 5 is a partially cutaway front view of the PDC line connection clamp.

【図６】ＰＤＣ線接続クランプ接続時の一部破断正面図
である。FIG. 6 is a partially cutaway front view when the PDC line connection clamp is connected.

【図７】アダプタの半断面図である。FIG. 7 is a half sectional view of an adapter.

【図８】電極の正面拡大図である。FIG. 8 is an enlarged front view of an electrode.

【図９】電極の側面拡大図である。FIG. 9 is an enlarged side view of an electrode.

【図１０】被覆電線に電極移動させた正面図である。FIG. 10 is a front view in which electrodes are moved to a covered electric wire.

【図１１】被覆電線の被覆を電極で切除した正面図であ
る。FIG. 11 is a front view in which the covering of the covered electric wire is cut off with electrodes.

【図１２】電線を電極に挿入、接触した正面図である。FIG. 12 is a front view in which an electric wire has been inserted into and contacted with an electrode.

【符号の説明】[Explanation of symbols]

ａ．被覆電線 ｂ．電線 ｃ．リード線 ｄ．操作棒 ｅ．リード端子 １．接続クランプ ２．アダプタ ３．絶縁カバー ４．上押え溝 ５．電線押え ６．ネジ軸 ７．連結金具 ８．下押え溝 ９．電極 １０．移動金具 １１．リード接続金具 １２．スプリング １３．ピン １４．連結ピン溝 １５．切除刃 １６．挿入部 １７．挿入溝 １８．切除角 １９．連結軸 ２０．鋼球 ２１．スプリング ２２．連結金具 ２３．連結ピン ２４．スライド軸 ２５．スプリングＡ a. Insulated wire b. Electric wire c. Lead wire d. Operation stick e. Lead terminals 1. Connection clamp 2. Adapter 3. Insulation cover 4. Upper holding groove 5. Wire retainer 6. Screw shaft 7. Connection bracket 8. Lower holding groove 9. Electrode 10. Moving bracket 11. Lead connection bracket 12. Spring 13. Pin 14. Connecting pin groove 15. Cutting blade 16. Insertion section 17. Insertion groove 18. Resection angle 19. Connecting shaft 20. Steel ball 21. Spring 22. Connection fitting 23. Connecting pin 24. Slide shaft 25. Spring A

フロントページの続き (72)発明者 竹中 正春 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 辻村 真一 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 今西 忠孝 大阪市淀川区新高１丁目３番８号 東神電 気株式会社内 (72)発明者 高崎 弘司 大阪市淀川区新高１丁目３番８号 東神電 気株式会社内 Ｆターム(参考） 3C061 AA41 EE00 EE22 5G355 AA01 BA02 BA12 CA09 CA22 5G375 AA02 BA26 BB46 CA02 CA13 CB05 DB09 EA02 EA17 Continuing from the front page (72) Inventor Masaharu Takenaka 3-2-2, Nakanoshima, Kita-ku, Osaka-shi Kansai Electric Power Co., Inc. (72) Inventor Shinichi Tsujimura 3-2-2, Nakanoshima, Kita-ku, Osaka Kansai Electric Power Stock Within the company (72) Inventor Tadataka Imanishi 1-3-8 Shindaka, Yodogawa-ku, Osaka-shi Inside (72) Inventor Koji Takasaki 1-3-8 Shindaka, Yodogawa-ku, Osaka-shi Toshin Denki stock In-house F term (reference) 3C061 AA41 EE00 EE22 5G355 AA01 BA02 BA12 CA09 CA22 5G375 AA02 BA26 BB46 CA02 CA13 CB05 DB09 EA02 EA17

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 電柱に装架されている架空配電線路にお
ける活線状態で被覆電線の被覆を切除し、電線に挿通、
接続する接続クランプにおいて、 被覆電線の被覆を切除する切除刃、電線の外周に添って
遊挿する挿入部と電線表面を傷めなく接触する挿通溝を
設けた導電性に優れた複数枚の電極を備えた切除、接触
機構と、電極と被覆電線を常に軸芯に仮位置設定する電
線上押え溝と電極を電線外周へ挿通移動に伴ない電線下
押え溝により被覆電線を軸芯に把持する上・下１対の把
持機構と、回転操作により電極を移動させ被覆の切除、
電線への挿通負荷異常および接続の確認をおこなう定ト
ルク機構を有したアダプタを併用するＰＤＣ線接続クラ
ンプ。1. A method according to claim 1, wherein the covering of the covered electric wire is cut off in an alive state in an overhead distribution line mounted on a power pole, and inserted into the electric wire.
In the connection clamp to be connected, a cutting blade that cuts off the coating of the coated electric wire, a plurality of electrodes with excellent conductivity provided with an insertion portion that is loosely inserted along the outer periphery of the electric wire and an insertion groove that contacts the electric wire surface without damage With the resection and contact mechanism provided, the electrode and coated wire are always temporarily set on the shaft center.・ The lower pair of gripping mechanisms and the electrode are moved by rotating operation to remove the coating,
PDC wire connection clamp that uses an adapter with a constant torque mechanism to check for abnormal insertion load into the wire and connection.