JP2003153423A - Method for forming connection section of plastic insulated power cable and diameter expanding support pipe - Google Patents
Method for forming connection section of plastic insulated power cable and diameter expanding support pipeInfo
- Publication number
- JP2003153423A JP2003153423A JP2001347325A JP2001347325A JP2003153423A JP 2003153423 A JP2003153423 A JP 2003153423A JP 2001347325 A JP2001347325 A JP 2001347325A JP 2001347325 A JP2001347325 A JP 2001347325A JP 2003153423 A JP2003153423 A JP 2003153423A
- Authority
- JP
- Japan
- Prior art keywords
- support pipe
- diameter
- power cable
- pipe
- expanded
- 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.)
- Granted
Links
Landscapes
- Cable Accessories (AREA)
- Processing Of Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、あらかじめ成形さ
れたゴム絶縁筒を拡径してケーブルに挿通し、ケーブル
導体接続部上に装着するＣＶケーブル等のプラスチック
絶縁電力ケーブルの接続部形成方法並びに拡径支持部材
の提供に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a connecting portion of a plastic insulated power cable such as a CV cable which is mounted on a cable conductor connecting portion by expanding a diameter of a preformed rubber insulating cylinder and inserting the cable into the cable. Providing a diameter-expanding support member.
【０００２】[0002]
【従来の技術】ＣＶケーブル等の接続部において、近
年、接続時間が短く、簡単に接続可能な、内部半導電
層、絶縁層、外部半導電層で形成されたゴム絶縁筒を用
いた接続部が、多く用いられている。この接続部の形成
において、導体接続部の上に前記のゴム絶縁筒を被せる
場合、施工前に電力ケーブルの外径より大きく拡径して
ケーブル上に被挿し後、ケーブルの導体接続を行い、こ
の導体接続部上に当該ゴム絶縁筒を収縮施工することが
行われている。2. Description of the Related Art In recent years, in connection parts of CV cables and the like, a connection part using a rubber insulating tube formed of an inner semiconductive layer, an insulating layer and an outer semiconductive layer, which has a short connection time and can be easily connected. However, it is often used. In the formation of this connection part, when covering the above-mentioned rubber insulation cylinder on the conductor connection part, after the diameter is larger than the outer diameter of the power cable before the work is inserted onto the cable, the conductor connection of the cable is performed, The rubber insulating cylinder is contracted on the conductor connecting portion.
【０００３】しかして、ゴム絶縁筒の拡径及び収縮は、
ゴム絶縁筒の中に拡径パイプを装填しておき、これを引
き抜くことで収縮するようにしている。However, the expansion and contraction of the rubber insulation cylinder
A diameter-expanding pipe is loaded in the rubber insulating cylinder, and it is contracted by pulling it out.
【０００４】[0004]
【発明が解決しようとする課題】上述のような接続部形
成において、接続作業スペースの縮小化のニーズが大き
い。この作業の例として、特開平９−２００９２５号公
報に示されるように、拡径パイプを軸方向に２分割し、
引抜きに際しては、それぞれのパイプの外部端部に設け
た引抜き手段により、それぞれ軸方向に個別に反対方向
に引抜く方法が開示されている。この方法は接続作業ス
ペースの縮小化のニーズに或る程度寄与するものである
が、作業能率の面からは同一方向に引き抜く方がよい。
また、引き抜きの際に、拡径パイプの引き抜き終り端部
にエッジが発生した場合にはゴム絶縁筒内面が損傷する
恐れがある。In the formation of the above-mentioned connecting portion, there is a great need to reduce the connecting work space. As an example of this work, as shown in Japanese Unexamined Patent Application Publication No. 9-200925, an expanded pipe is divided into two in the axial direction,
At the time of drawing, there is disclosed a method of individually drawing in the opposite direction in the axial direction by means of drawing means provided at the outer end of each pipe. This method contributes to the need for reducing the connection work space to some extent, but from the viewpoint of work efficiency, it is better to pull out in the same direction.
In addition, if an edge is generated at the end of the expanded diameter pipe at the end of drawing, the inner surface of the rubber insulating cylinder may be damaged.
【０００５】本発明の目的は、拡径パイプを用いた電力
ケーブルの接続部の形成において、接続作業スペースの
縮小化と作業コストの低減を図ることができるととも
に、接続部の品質面での危惧のない電力ケーブルの接続
方法及びそのための拡径支持パイプを提供することにあ
る。It is an object of the present invention to reduce a connection work space and work cost in forming a connecting portion of a power cable using a diameter-expanding pipe, and to worry about the quality of the connecting portion. It is an object of the present invention to provide a method for connecting a power cable without a wire and a diameter-expanding support pipe therefor.
【０００６】[0006]
【課題を解決するための手段】本発明により提供するプ
ラスチック絶縁電力ケーブルの接続部形成方法は、ゴム
絶縁筒拡径のための拡径支持パイプを挿入してゴム絶縁
筒全体を拡径し、この拡径状態のゴム絶縁筒と電力ケー
ブルに挿通した後に電力ケーブルの導体接続を行い、こ
の導体接続部の上に前記ゴム絶縁筒を移して、前記拡径
支持パイプを引き抜く際に、前記拡径支持パイプが長て
方向に少なくとも２分割可能とされ、該拡径支持パイプ
を同一方向に引き抜きながら、分割位置が現れたとき、
順次分割パイプを取り外すことを特徴とするものであ
る。According to the method of forming a connecting portion of a plastic insulated power cable provided by the present invention, a diameter-increasing support pipe for expanding the diameter of a rubber insulating cylinder is inserted to expand the entire diameter of the rubber insulating cylinder. After inserting the expanded diameter rubber insulation tube into the power cable, conductor connection of the power cable is performed, the rubber insulation tube is transferred onto the conductor connection portion, and the expansion support pipe is pulled out when the expansion support pipe is pulled out. When the radial support pipe is divided into at least two parts in the longitudinal direction and the split position appears while pulling out the expanded support pipe in the same direction,
The feature is that the divided pipes are sequentially removed.
【０００７】また、前記の方法において、拡径支持パイ
プの抜き取り終わり端にスロープ部材を取り付けて該拡
径支持パイプを引き抜くことを特徴とするものである。Further, in the above-mentioned method, a slope member is attached to the extraction end end of the expanded diameter support pipe and the expanded diameter support pipe is pulled out.
【０００８】また、前記の方法において用いる拡径支持
パイプは、長て方向に分割可能であり、及びそれぞれが
半円状に縦割可能であり、この分割パイプの引き抜き方
向の前端の外周に凸面と凹面を設け、後端の内周に凸面
と凹面を設けて各分割パイプの引っ掛け構造を形成され
ていることを特徴とするものである。Further, the diameter-expanding support pipe used in the above method can be divided in the longitudinal direction, and each can be longitudinally divided into semicircles, and a convex surface is formed on the outer periphery of the front end in the drawing direction of the divided pipe. And a concave surface, and a convex surface and a concave surface are provided on the inner periphery of the rear end to form a hooking structure for each split pipe.
【０００９】[0009]
【発明の実施の形態】本発明の実施の形態を図面を参照
しながら説明する。図３は本発明の接続部の形成方法に
おいて、ゴム絶縁筒に拡径支持パイプを挿入する工程の
説明図である。図において、拡径支持パイプ１は長て方
向に３分割１ａ，１ｂ，１ｃされており、先端には尖頭
部材２を具えられており、後端には押し部材３により支
持されておる。押し部材３には自在キャスター（４）が
具えられて移動可能となっており、拡径支持パイプ１の
内部に通された油圧シリンダからの延長棒５に固定され
ておる。油圧シリンダ６を操作することにより、押し部
材３は図の左方向へ移動し、ゴム絶縁筒１０は拡径支持
パイプ１の尖頭部材２を経て、拡径支持パイプ１上に挿
入されていく。この際、油圧シリンダからの延長棒５は
芯出しされた状態であり、拡径支持パイプ１は水平に挿
入される。なお、符号７は拡径ヘッド支持金具である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 3 is an explanatory view of the step of inserting the expanded diameter support pipe into the rubber insulating cylinder in the method for forming the connection portion of the present invention. In the figure, the expanded support pipe 1 is divided into three parts 1a, 1b, 1c in the longitudinal direction, a tip member 2 is provided at the tip, and a pushing member 3 is supported at the rear end. The pushing member 3 is provided with a movable caster (4) so as to be movable, and is fixed to an extension rod 5 from a hydraulic cylinder which is passed through the inside of the diameter-expanding support pipe 1. By operating the hydraulic cylinder 6, the pushing member 3 moves to the left in the figure, and the rubber insulating cylinder 10 is inserted onto the diameter-expanding support pipe 1 via the pointed member 2 of the diameter-expansion supporting pipe 1. . At this time, the extension rod 5 from the hydraulic cylinder is in a centered state, and the expanded diameter support pipe 1 is inserted horizontally. In addition, reference numeral 7 is a diameter expansion head support fitting.
【００１０】図１は本発明の接続部の形成方法におい
て、拡径支持パイプにより拡径されたゴム絶縁筒がケー
ブル導体接続部上に位置せしめた後、前記拡径支持パイ
プを引抜く工程の説明図である。なお、上述した図３と
同一部位には同一符号を付してある。ゴム絶縁筒１０を
ケーブル導体接続部Ａ上に位置せしめた後、拡径支持パ
イプ１の分割された引抜き方向先端のパイプ１ａの端部
に環状フランジ１２を取付け、環状フランジ１２には油
圧シリンダー６の押し棒５が固定されて矢印の方向に引
抜いていく。そして、分割位置が現れたとき、パイプ１
ａを取り外す。同様にして、分割位置が現れたとき、パ
イプ１ｂを取り外す。FIG. 1 shows a step of pulling out the expanded support pipe after the rubber insulating tube expanded by the expanded support pipe is positioned on the cable conductor connection part in the method for forming a connection part of the present invention. FIG. The same parts as those in FIG. 3 described above are designated by the same reference numerals. After locating the rubber insulating cylinder 10 on the cable conductor connecting portion A, an annular flange 12 is attached to the end of the pipe 1a at the distal end of the expanded support pipe 1 in the divided pulling direction, and the hydraulic cylinder 6 is attached to the annular flange 12. The push rod 5 of is fixed and pulled out in the direction of the arrow. And when the split position appears, pipe 1
Remove a. Similarly, when the split position appears, the pipe 1b is removed.
【００１１】また、拡径支持パイプ１の最終分割パイプ
であるパイプ１ｃの後端にスロープ部材１１を取り付け
られる。このスロープ部材１１は、引き抜く際に、ゴム
絶縁筒１０の内面が拡径支持パイプ１のエッジで傷がつ
かないようにするためにゴム絶縁筒１０内面の応力集中
を緩和するものである。A slope member 11 is attached to the rear end of the pipe 1c which is the final split pipe of the expanded diameter support pipe 1. The slope member 11 relaxes the stress concentration on the inner surface of the rubber insulating cylinder 10 so that the inner surface of the rubber insulating cylinder 10 is not scratched by the edge of the expanded diameter support pipe 1 when the slope member 11 is pulled out.
【００１２】また、分割パイプ１ａ，１ｂ，１ｃは、図
２に示すように、引き抜き方向の前端外周に凸面２１と
凹面２２を設けられ、後端内周に凸面２３と凹面２４を
設けられている。さらに、図の（ロ）に示すように各分
割パイプは縦に半割可能となっている。As shown in FIG. 2, the split pipes 1a, 1b and 1c are provided with a convex surface 21 and a concave surface 22 on the outer circumference at the front end and a convex surface 23 and a concave surface 24 on the inner circumference at the rear end. There is. Further, as shown in (b) of the figure, each split pipe can be vertically divided in half.
【００１３】各分割パイプは上述のような構成であるの
で、引き抜きの過程で順次分割パイプを取り外すことが
容易となる。Since each of the divided pipes has the above-mentioned structure, it becomes easy to sequentially remove the divided pipes during the drawing process.
【００１４】このようにして、拡径支持パイプ１が引抜
かれたゴム絶縁筒１０は自己収縮力により収縮して、導
体接続部Ａ及びケーブル絶縁体Ｂ上に密着して装着され
る。In this way, the rubber insulating cylinder 10 from which the expanded support pipe 1 has been pulled out contracts by the self-contracting force, and is closely attached to the conductor connecting portion A and the cable insulator B.
【００１５】[0015]
【発明の効果】以上説明したように、本発明のプラスチ
ック絶縁電力ケーブルの接続部形成方法によれば、拡径
支持パイプが長て方向に少なくとも２分割可能とされ、
拡径支持パイプを引き抜きながら分割位置が現れたと
き、順次分割パイプを取り外し可能としたので、例えば
油圧シリンダーの動力を使用する場合、シリンダーのス
トローク長さは短くてすみ、機器を小型化できるととも
に、作業スペースを縮小化できる。さらに、拡径支持パ
イプは何度も使用できる。As described above, according to the method for forming the connection portion of the plastic insulated power cable of the present invention, the expanded support pipe can be divided into at least two in the longitudinal direction,
When the split position appears while pulling out the expanded support pipe, the split pipes can be sequentially removed.For example, when using the power of a hydraulic cylinder, the stroke length of the cylinder can be short and the device can be downsized. , The work space can be reduced. Furthermore, the expanded support pipe can be used many times.
【００１６】また、拡径支持パイプの抜き取り終わり端
にスロープ部材を取り付けるようにしたので、ゴム絶縁
筒内面に傷をつける恐れはない。Since the slope member is attached to the end of the expansion support pipe withdrawn, there is no risk of scratching the inner surface of the rubber insulating cylinder.
【図１】本発明の絶縁部の形成方法において、ゴム絶縁
筒から拡径支持パイプを引き抜く工程の説明図である。FIG. 1 is an explanatory view of a step of pulling out a diameter-expanding support pipe from a rubber insulating cylinder in a method of forming an insulating portion of the present invention.
【図２】本発明の接続部の形成方法において用いられる
拡径支持パイプを構成する分割パイプの断面図である。FIG. 2 is a cross-sectional view of a split pipe forming a diameter-expanding support pipe used in the method for forming a connection portion of the present invention.
【図３】本発明の接続部の形成方法において、ゴム絶縁
筒に拡径支持パイプを挿入する工程の説明図である。FIG. 3 is an explanatory view of a step of inserting a diameter-expanding support pipe into a rubber insulating cylinder in the method for forming a connecting portion of the present invention.
１ 拡径支持パイプ ２ 尖頭部材 ３ 押し部材 ４ 自在キャスター ５ 油圧シリンダー延長棒 ６ 油圧シリンダー ７ 拡径ヘッド支持金具 １０ ゴム絶縁筒 １１ スロープ部材 １２ 環状フランジ 1 Expansion support pipe 2 pointed member 3 push members 4 Flexible casters 5 Hydraulic cylinder extension rod 6 hydraulic cylinder 7 Expanding head support bracket 10 rubber insulation tube 11 Slope member 12 annular flange
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5G355 AA03 BA02 BA14 CA09 5G375 AA02 BA26 BB43 CA02 CA14 CB07 DB32 EA17 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 5G355 AA03 BA02 BA14 CA09 5G375 AA02 BA26 BB43 CA02 CA14 CB07 DB32 EA17
Claims (3)
筒を、電力ケーブルの導体接続部上に収縮施工する形式
の接続方法において、ゴム絶縁筒拡径のための拡径支持
パイプを挿入してゴム絶縁筒全体を拡径し、この拡径状
態のゴム絶縁筒を電力ケーブルに挿通した後に電力ケー
ブルの導体接続を行い、この導体接続部の上に前記ゴム
絶縁筒を移して、前記拡径支持パイプを引き抜く際に、 前記拡径支持パイプが長て方向に少なくとも２分割可能
とされ、該拡径支持パイプを同一方向に引き抜きなが
ら、分割位置が現れたとき、順次分割パイプを取り外す
ことを特徴とするプラスチック絶縁電力ケーブルの接続
部形成方法。1. In a connecting method of a type in which a rubber insulating tube whose diameter has been expanded in advance is contracted on a conductor connecting portion of a power cable before installation, a diameter-increasing support pipe for expanding the diameter of the rubber insulating tube is inserted. Expand the entire diameter of the rubber insulation tube, insert the expanded diameter of the rubber insulation tube into the power cable, and then connect the power cable to the conductor. When the radial support pipe is pulled out, the radially expanded support pipe can be divided into at least two parts in the longitudinal direction, and when the divided position appears while pulling out the radially expanded support pipe, the divided pipes are sequentially removed. A method for forming a connection portion of a plastic insulated power cable, which is characterized by:
ロープ部材を取付けて該拡径支持パイプを引き抜くこと
を特徴とする請求項１記載のプラスチック絶縁電力ケー
ブルの接続部形成方法。2. The method for forming a connection portion of a plastic insulated power cable according to claim 1, wherein a slope member is attached to the end of the expansion support pipe for removing the expansion support pipe.
法に用いる拡径支持パイプにおいて、 拡径支持パイプが長て方向に分割可能であり、及びそれ
ぞれが半円状に縦割可能であり、この分割パイプの引き
抜き方向の前端の外周に凸面と凹面を設け、後端の内周
に凸面と凹面を設けて各分割パイプの引っ掛け構造を形
成されていることを特徴とする拡径支持パイプ。3. A diameter-expansion support pipe used in the method for forming a connecting portion according to claim 1 or 2, wherein the diameter-expansion support pipe is longitudinally dividable, and each of them is vertically separable in a semicircular shape. There is a convex structure and a concave surface on the outer circumference of the front end in the pull-out direction of the split pipe, and a convex structure and a concave surface on the inner circumference of the rear end to form a hooking structure for each split pipe. pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001347325A JP3792563B2 (en) | 2001-11-13 | 2001-11-13 | Expanded diameter support pipe used for the method of forming the connection part of plastic insulated power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001347325A JP3792563B2 (en) | 2001-11-13 | 2001-11-13 | Expanded diameter support pipe used for the method of forming the connection part of plastic insulated power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003153423A true JP2003153423A (en) | 2003-05-23 |
| JP3792563B2 JP3792563B2 (en) | 2006-07-05 |
Family
ID=19160343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001347325A Expired - Fee Related JP3792563B2 (en) | 2001-11-13 | 2001-11-13 | Expanded diameter support pipe used for the method of forming the connection part of plastic insulated power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3792563B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016185003A (en) * | 2015-03-25 | 2016-10-20 | 住友電気工業株式会社 | Diameter expansion method of insulation cylinder, method of manufacturing power cable connection unit, and diameter expansion device of insulation cylinder |
-
2001
- 2001-11-13 JP JP2001347325A patent/JP3792563B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016185003A (en) * | 2015-03-25 | 2016-10-20 | 住友電気工業株式会社 | Diameter expansion method of insulation cylinder, method of manufacturing power cable connection unit, and diameter expansion device of insulation cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3792563B2 (en) | 2006-07-05 |
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