JPS58137911A - Method of producing slack suppression type wire - Google Patents
Method of producing slack suppression type wireInfo
- Publication number
- JPS58137911A JPS58137911A JP1939482A JP1939482A JPS58137911A JP S58137911 A JPS58137911 A JP S58137911A JP 1939482 A JP1939482 A JP 1939482A JP 1939482 A JP1939482 A JP 1939482A JP S58137911 A JPS58137911 A JP S58137911A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- water
- steel core
- type wire
- aluminum
- 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
- Non-Insulated Conductors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は弛度抑制型電線を効率よく製造する方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for efficiently manufacturing a slack-reduced electric wire.
鋼心アルミ撚線は、鋼心の上にアルミ撚線を一体的に撚
り合せた構成よりなるから、これの線膨張係数はアルミ
と鋼の合成値を示し、およそ２０Ｘ１０’／’Ｃである
。ところで、鋼の線膨張係数は１１．５Ｘ１０’／’Ｃ
であるから、もし鋼心アルミ撚線において鋼心にのみ張
力分担せしめ得れば、鋼心アルミ撚線の熱膨張を大巾に
低減せしめ、通電発熱時の電線の弛度低下を減少せしめ
得るから、既設線路においても、それだけ通電容饅を増
加させることができる。Steel core aluminum stranded wire consists of aluminum strands twisted together on a steel core, so its coefficient of linear expansion is the composite value of aluminum and steel, and is approximately 20X10'/'C. . By the way, the coefficient of linear expansion of steel is 11.5X10'/'C
Therefore, if the tension can be shared only by the steel core in a steel-core aluminum stranded wire, the thermal expansion of the steel-core aluminum stranded wire can be greatly reduced, and the decrease in the sag of the wire when it is energized and generates heat can be reduced. Therefore, even on existing lines, the current carrying capacity can be increased accordingly.
このような知見に立ち、第３図に示すように鋼心１とア
ルミ撚線２との間に水溶性をもってなる介在層３を介在
させて撚り合せ、その後この介在層３を溶出させて、鋼
心１とアルミ撚線２との境界部に少間隙を形成させ、鋼
心１とアルミ撚線２とを滑動可能な状態として鋼心１の
みに架線張力の分担をさせる技術については、出願人に
おいてすでに提案がある。Based on this knowledge, as shown in FIG. 3, a water-soluble intervening layer 3 is interposed between a steel core 1 and an aluminum stranded wire 2, and the intervening layer 3 is then eluted. Regarding the technique of forming a small gap at the boundary between the steel core 1 and the aluminum strands 2, allowing the steel core 1 and the aluminum strands 2 to slide, and allowing only the steel core 1 to share the tension of the overhead wire, an application has been filed. There are already suggestions in humans.
本発明は、それとは別個の知見に立つものであり、第３
図における介在層３を設けず、第１図に示すようにアル
ミ撚線層の最内層素線の一部あるいは全部を水溶性物質
被覆素線４として構成したものである。すなわら介在層
３を設けるにはそのための特別の段取りを必要とする上
その上に撚り合わされる撚線についても特別の設計配慮
を必要とし、予想以上に面倒である。本発明はそのよう
な面倒を一掃したものであり、第２図に詳細を示したよ
うに心線４ａの外周に本溶着性物質例えばポリビニール
アルコールあるいはポリエチレンオキサイドなどよりな
る被覆層４ｂを有してなる水溶性物質被覆素線４を用意
する。このような素線４は常用の押出被覆により容易簡
便に入手することができる。The present invention is based on knowledge separate from that, and the third
The intervening layer 3 shown in the figure is not provided, and a part or all of the innermost wire of the aluminum twisted wire layer is constructed as a water-soluble substance coated wire 4 as shown in FIG. That is, providing the intervening layer 3 requires a special setup, and also requires special design consideration for the stranded wires twisted thereon, which is more troublesome than expected. The present invention eliminates such troubles, and has a coating layer 4b made of a weldable material such as polyvinyl alcohol or polyethylene oxide on the outer periphery of the core wire 4a, as shown in detail in FIG. A strand 4 coated with a water-soluble substance is prepared. Such a wire 4 can be easily and conveniently obtained by conventional extrusion coating.
水溶性物質被覆東線４は、アルミ撚線層２の最内層素線
の一部あるいは全部として撚り合わされるが、この場合
の撚線工程は従来の鋼心アルミ撚線の撚線工程となんら
変るところはない。The water-soluble substance-coated east wire 4 is twisted together as part or all of the innermost wire of the aluminum twisted wire layer 2, but the twisting process in this case is no different from the conventional steel core aluminum twisted wire twisting process. Nothing has changed.
撚線後に工場においであるいは架線後の降雨に依存して
水溶性被覆４ｂを溶出し去る。すると最内層撚層はルー
ズ化１、鋼心１が独立して滑動可能となるため、架線張
力を鋼心１のみが分担することとなるのである。After the wires are twisted, the water-soluble coating 4b is eluted away in the factory or depending on rainfall after the wire is stranded. Then, the innermost twisted layer becomes loose 1 and the steel core 1 becomes able to slide independently, so that only the steel core 1 shares the tension of the overhead wire.
第１図は本発明に係る弛度抑制型電線の断面図、第２図
は水溶性物質被覆東線の構成を示す説明図、第３図は従
来の弛度抑制型電線の説明図である。
１：鋼心、２ニアルミ撚纏、
３：介在層、４：水溶性物質被覆東線。
Ｔ １ 口
３ＵFIG. 1 is a cross-sectional view of a sag-suppressing electric wire according to the present invention, FIG. 2 is an explanatory diagram showing the configuration of a water-soluble substance coated east wire, and FIG. 3 is an explanatory diagram of a conventional sag-suppressing electric wire. . 1: steel core, 2: aluminum strands, 3: intervening layer, 4: water-soluble substance coated east line. T 1 mouth 3U
Claims (1)
いは全部を水溶性物質を被覆した素線をもって構成し、
撚縮後、前記水溶性物質を溶出せしめる弛度抑制型電線
の製造方法Part or all of the innermost east wire of the aluminum stranded wire layer of the steel core aluminum stranded wire is composed of a wire coated with a water-soluble substance,
Method for manufacturing a slack-suppressing electric wire that allows the water-soluble substance to be eluted after twisting
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1939482A JPS58137911A (en) | 1982-02-09 | 1982-02-09 | Method of producing slack suppression type wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1939482A JPS58137911A (en) | 1982-02-09 | 1982-02-09 | Method of producing slack suppression type wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58137911A true JPS58137911A (en) | 1983-08-16 |
| JPH0117205B2 JPH0117205B2 (en) | 1989-03-29 |
Family
ID=11998061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1939482A Granted JPS58137911A (en) | 1982-02-09 | 1982-02-09 | Method of producing slack suppression type wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58137911A (en) |
-
1982
- 1982-02-09 JP JP1939482A patent/JPS58137911A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0117205B2 (en) | 1989-03-29 |
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