JPS6068125A - Twisted steel wire - Google Patents
Twisted steel wireInfo
- Publication number
- JPS6068125A JPS6068125A JP8242684A JP8242684A JPS6068125A JP S6068125 A JPS6068125 A JP S6068125A JP 8242684 A JP8242684 A JP 8242684A JP 8242684 A JP8242684 A JP 8242684A JP S6068125 A JPS6068125 A JP S6068125A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- wire
- twisted
- stranded wire
- twisting
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/08—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core the layers of which are formed of profiled interlocking wires, i.e. the strands forming concentric layers
Landscapes
- Ropes Or Cables (AREA)
- Wire Processing (AREA)
- Non-Insulated Conductors (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は架空送電線、架空地線等の架空電線に使用され
る鋼撚線に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a steel stranded wire used for overhead electric wires such as overhead power transmission lines and overhead ground wires.
鋼撚線は鋼心アルミ撚線の構成要素として、又は単独で
架空地線として広汎に使用されている。Stranded steel wire is widely used as a component of steel core aluminum stranded wire or alone as an overhead ground wire.
（従来技術）
従来、この種鋼撚線は断面円型の鋼索線を複数本撚合せ
てなる。(Prior Art) Conventionally, this type of stranded steel wire is made by twisting together a plurality of steel cables each having a circular cross section.
そのため、その外周には鋼素線相互による溝が形成され
、鋼心アルミ撚線として使用した場合には、鋼撚線とア
ルミ撚線層との間の摩擦抵抗が犬係数は略鋼撚線とアル
ミ撚線層との中間の値となる。そのため、熱的影響によ
る弛度増加は鋼撚線のみの弛度増加以上の値となってし
まう。Therefore, a groove is formed between the steel wires on the outer periphery, and when used as a steel-core aluminum stranded wire, the coefficient of friction between the steel stranded wire and the aluminum stranded wire layer is approximately the same as the steel stranded wire. The value is between that of the aluminum stranded wire layer and the aluminum stranded wire layer. Therefore, the increase in sag due to thermal influence becomes greater than the increase in sag of only the steel stranded wire.
また、従来の鋼撚線を架空地線として単独使用した場合
においては、素線相互は線接触の状態にあるため、降雨
時等には水分が内に浸入し易く、従って腐食し易い欠点
があった。In addition, when conventional stranded steel wires are used alone as overhead ground wires, the wires are in contact with each other, so moisture can easily enter the wire during rain, etc., and therefore corrosion is a problem. there were.
＋（発明の目的）
本発明は上記事情に鑑み、鋼心アルミ撚線に使用した場
合においては、アルミ撚線層との間の摩擦抵抗を低くし
、鋼心アルミ撚線としての線膨張係数を鋼撚線の線膨張
係数と略同−とし得るばかシか、単独使用した場合にお
いても内に水分が浸入し難い鋼撚線を提供することを目
的とする。+ (Object of the Invention) In view of the above circumstances, the present invention has been developed to reduce the frictional resistance between the aluminum stranded wire layer and the aluminum stranded wire layer when used in a steel-core aluminum stranded wire, and to reduce the linear expansion coefficient of the steel-core aluminum stranded wire. It is an object of the present invention to provide a stranded steel wire which can have a linear expansion coefficient substantially the same as that of the stranded steel wire, and which prevents moisture from penetrating even when used alone.
（発明の構成）
本発明は上記目的を達成するため、複数本の鋼索線を撚
合せてなる鋼撚線において、前記鋼撚線は断面形状が略
扇型状となった鋼索線を撚合せて構成し、その外形を平
滑な円形とｌ〜でなるもの（実施例）
本発明の一実施例を図に基づき説明する。(Structure of the Invention) In order to achieve the above object, the present invention provides a stranded steel wire formed by twisting a plurality of steel cable wires, in which the stranded steel wire has a substantially fan-shaped cross section. (Embodiment) An embodiment of the present invention will be described based on the drawings.
図において（１）は鋼索線を示し、この鋼索線（１）は
その断面形状が円筒形をその中心から外方に向かって放
射状に延びる線に沿って分割した略扇型状に形成してな
υ、またその外周には亜鉛メッキを施してなる。In the figure, (1) indicates a steel cable wire, and the steel cable wire (1) has a cross-sectional shape that is approximately fan-shaped by dividing a cylindrical shape along lines extending radially outward from the center. Moreover, the outer periphery is galvanized.
このように形成した鋼索線（１）を複数本、実施例では
６本の鋼索線（１）を通常の撚合せ手段により撚合せ本
発明鋼撚線を構成してなる。従って、この実施例によっ
た場合には中心部に空洞が形成される。この空洞部内に
は例えば公知の光ガイドを収納し得る。A plurality of steel cable wires (1) thus formed, six steel cable wires (1) in the embodiment, are twisted together by a normal twisting means to constitute the steel stranded wire of the present invention. Therefore, according to this embodiment, a cavity is formed in the center. For example, a known light guide can be accommodated in this cavity.
捷だ鋼索線（１）の材質としては、通常の鋼の外アンバ
ー、エリンバの如き低線膨係数のものとすることができ
る。The material of the twisted steel cable (1) may be a material with a low linear expansion coefficient such as ordinary steel outer umber or erinvar.
（発明の効果）
しかして本発明は複数本の鋼索線を撚合せてなる鋼撚線
において、前記鋼撚線は少くともその露出撚線層を断面
形状が略扇型状となった鋼索線即ち、本発明になる鋼撚
線は、その外形が平滑な円形としてなるので、この鋼撚
線の外周にアルミ撚線層を設けて鋼心アルミ撚線とした
場合には、鋼撚線とアルミ撚線層との間の摩擦抵抗が少
く、両者は滑シ易くなる。(Effects of the Invention) Accordingly, the present invention provides a stranded steel wire formed by twisting a plurality of steel cables, wherein the stranded steel wire is a steel cable whose cross-sectional shape is substantially fan-shaped at least through its exposed stranded wire layer. That is, since the steel stranded wire according to the present invention has a smooth circular outer shape, if an aluminum stranded wire layer is provided on the outer periphery of the steel stranded wire to make a steel core aluminum stranded wire, it will be different from the steel stranded wire. There is little frictional resistance between it and the aluminum stranded wire layer, making it easier for both to slide.
従って、上記鋼心アルミ撚線が熱膨張により伸長した際
には、線膨張係数の大きいアルミ撚線層は鋼心上を滑動
して伸長し、やがて径間内における張力は鋼撚線のみが
負担し、もって径間内の弛度増加は鋼撚線のみの線膨張
係数のみによって決定される。Therefore, when the above-mentioned steel-core aluminum stranded wire is expanded due to thermal expansion, the aluminum stranded wire layer with a large coefficient of linear expansion slides on the steel core and elongates, and eventually only the steel stranded wire is responsible for the tension within the span. The increase in sag within the span is determined solely by the coefficient of linear expansion of the steel strands.
また、本発明になる鋼撚線を架空地線として単独使用し
た場合でも、横断面形状が略扇型状となった鋼索線を撚
合せてなるので、鋼素線相互は平面接触と々るので、降
雨があった場合でも水分が内に侵入することが少く、従
って腐食することが少くなる。Furthermore, even when the stranded steel wire of the present invention is used alone as an overhead ground wire, since the steel wires are twisted together with a substantially fan-shaped cross section, the steel wires are in planar contact with each other. Therefore, even if it rains, there is less chance of moisture entering the inside, and therefore less corrosion.
更に、本発明になる鋼撚線は略扇型状の鋼素線を撚合せ
るものであるから、中心部に空洞を形成し得、この空洞
内に例えば光ガイドを収納し得、光複合鋼心アルミ撚線
、光複合鋼撚線とし得るばかりか、上記鋼撚線は略扇型
状の鋼素線を撚合せたものであるから耐圧縮力に優れ、
従って上記光複合鋼心アルミ撚線や光複合鋼撚線を圧縮
型の引留クランプや接続スリーブで圧縮接続した場合で
も収納した光ガイドを損傷することもない。Furthermore, since the steel stranded wire according to the present invention is made by twisting substantially fan-shaped steel wires, it is possible to form a cavity in the center, and for example, a light guide can be housed in this cavity. Not only can it be used as a core aluminum stranded wire or an optical composite steel stranded wire, but since the above steel stranded wire is made by twisting approximately fan-shaped steel wires, it has excellent compression resistance.
Therefore, even if the optical composite steel core aluminum stranded wire or the optical composite steel stranded wire is compressed and connected using a compression-type retaining clamp or connection sleeve, the housed optical guide will not be damaged.
図は本発明鋼撚線の一実施例を示す断面図である。 （１）・・・鋼索線 The figure is a sectional view showing an embodiment of the steel stranded wire of the present invention. (1)...Steel cable wire
Claims (1)
撚線は断面形状が略扇型状となった鋼索線を撚合せて構
成し、その外形を平滑な円形としてなることを特徴とす
る鋼撚線。A stranded steel wire formed by twisting a plurality of steel cables, characterized in that the stranded steel wire is constructed by twisting steel cables with a substantially fan-shaped cross section, and has a smooth circular outer shape. Stranded steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8242684A JPS6068125A (en) | 1984-04-24 | 1984-04-24 | Twisted steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8242684A JPS6068125A (en) | 1984-04-24 | 1984-04-24 | Twisted steel wire |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5640478A Division JPS6042562B2 (en) | 1978-05-12 | 1978-05-12 | steel core aluminum stranded wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6068125A true JPS6068125A (en) | 1985-04-18 |
Family
ID=13774256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8242684A Pending JPS6068125A (en) | 1984-04-24 | 1984-04-24 | Twisted steel wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6068125A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4839360A (en) * | 1971-09-27 | 1973-06-09 | ||
| JPS4890963A (en) * | 1972-03-06 | 1973-11-27 | ||
| JPS5274877A (en) * | 1975-12-18 | 1977-06-23 | Furukawa Electric Co Ltd:The | Manufacturing of plane rectangular shaped twisted wire |
-
1984
- 1984-04-24 JP JP8242684A patent/JPS6068125A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4839360A (en) * | 1971-09-27 | 1973-06-09 | ||
| JPS4890963A (en) * | 1972-03-06 | 1973-11-27 | ||
| JPS5274877A (en) * | 1975-12-18 | 1977-06-23 | Furukawa Electric Co Ltd:The | Manufacturing of plane rectangular shaped twisted wire |
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