JPS6029139Y2 - overhead wire - Google Patents
overhead wireInfo
- Publication number
- JPS6029139Y2 JPS6029139Y2 JP12385681U JP12385681U JPS6029139Y2 JP S6029139 Y2 JPS6029139 Y2 JP S6029139Y2 JP 12385681 U JP12385681 U JP 12385681U JP 12385681 U JP12385681 U JP 12385681U JP S6029139 Y2 JPS6029139 Y2 JP S6029139Y2
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- coated steel
- tubular metal
- steel wire
- wire
- 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.)
- Expired
Links
Landscapes
- Non-Insulated Conductors (AREA)
- Communication Cables (AREA)
Description
【考案の詳細な説明】
本考案は光伝送機能を具備した架空電線、特に架空地線
に関するものである。[Detailed Description of the Invention] The present invention relates to an overhead wire having an optical transmission function, particularly an overhead ground wire.
従来、この種架空電線としては光ファイバを収納した管
状金属の外周上に、アルミ被覆鋼線を複数層撚合せてな
るものが知られている。Conventionally, as this type of overhead electric wire, one is known in which a plurality of layers of aluminum-coated steel wire are twisted on the outer periphery of a tubular metal housing an optical fiber.
しかしながら、この架空電線では、そのアルミ被覆鋼線
のアルミニウム被覆厚は、全て同一厚としであるので、
これの厚みが厚い場合には、これの圧縮接続時において
、管状金属に接して撚合せたアルミ被覆銅線のアルミニ
ウム被覆層の変形が大きく、管状金属が大きく変形して
、内部の光ファイバを損傷する恐れがある。However, in this overhead electric wire, the aluminum coating thickness of the aluminum coated steel wire is all the same thickness, so
If this is thick, the aluminum coating layer of the aluminum-coated copper wire twisted in contact with the tubular metal will be greatly deformed during compression connection, and the tubular metal will be greatly deformed, damaging the internal optical fiber. There is a risk of damage.
またアルミニウム被覆厚を薄くした場合には、所要の電
気的特性を得ることができなくなる欠点がある。Furthermore, if the thickness of the aluminum coating is made thinner, there is a drawback that required electrical characteristics cannot be obtained.
本考案は、このような欠点を改良したものである。The present invention improves these drawbacks.
尚、本考案において光ファイバとは光ファイバの単線若
しくはこれの複数本を集合したもの又はこれらにナイロ
ン等の被覆層を設けたもの或はこれらに適当なシースを
施したものをいう。In the present invention, the term "optical fiber" refers to a single optical fiber, a collection of a plurality of optical fibers, a coating layer made of nylon or the like, or a suitable sheath.
次に、本考案を図示した一実施例に基づき説明する。Next, the present invention will be explained based on an illustrated embodiment.
図において１はバネ鋼線を密閉螺旋状に成形した管状金
属、２は該管状金属１内に緩く収納した光ファイバ、３
，４は夫々アルミニウム被覆厚の異るアルミ被覆鋼線を
示し、アルミニウム被覆厚の薄いアルミ被覆鋼線３は管
状金属１に接して撚合せ、これの上にアルミニウム被覆
厚の厚いアルミ被覆鋼線４を撚合せである。In the figure, 1 is a tubular metal made of a spring steel wire formed into a sealed spiral shape, 2 is an optical fiber loosely housed within the tubular metal 1, and 3
, 4 indicate aluminum-coated steel wires with different aluminum coating thicknesses, the aluminum-coated steel wires 3 with a thin aluminum coating thickness are twisted together in contact with the tubular metal 1, and the aluminum-coated steel wires with a thick aluminum coating thickness are laid on top of the aluminum-coated steel wires with a thick aluminum coating thickness. 4 is twisted.
上記アルミ被覆鋼線３，４の各アルミニウム被覆厚は、
例えば内層のアルミ被覆鋼線３を０．３耽、外層のアル
ミ被覆鋼線４を０．８ｍｙｎにしである。The aluminum coating thickness of the aluminum coated steel wires 3 and 4 is as follows:
For example, the aluminum coated steel wire 3 of the inner layer has a thickness of 0.3 min, and the aluminum coated steel wire 4 of the outer layer has a thickness of 0.8 myyn.
またアルミ被覆鋼線３，４の外径は両者略同−にしであ
る。Further, the outer diameters of the aluminum coated steel wires 3 and 4 are approximately the same.
尚、上記アルミ被覆鋼線３，４の各アルミニウム被覆厚
は、実施例に示したものに限らず任意に選定し得るが、
管状金属１に接して撚合せたアルミ被覆鋼線３の内部鋼
線の外径を、これらが圧縮された際、該鋼線相互によっ
て形成される空隙内に管状金属１が所定量以上大きく変
形することなく収納できるようにすると共に、外層のア
ルミ被覆鋼線４のアルミニウム被覆厚を、所定以上の電
気的特性が得られるようにすることが望ましい。Note that the aluminum coating thickness of the aluminum coated steel wires 3 and 4 is not limited to that shown in the examples and can be arbitrarily selected.
When the outer diameter of the internal steel wire of the aluminum-coated steel wire 3 twisted in contact with the tubular metal 1 is compressed, the tubular metal 1 is deformed by a predetermined amount or more within the gap formed by the steel wires. It is desirable that the aluminum coating thickness of the aluminum-coated steel wire 4 as the outer layer is such that electrical characteristics greater than a predetermined value can be obtained.
また両アルミ緋覆鋼線３，４の外径は両者略同−にする
ことが製造上望ましく、更にアルミニウム被覆厚を厚く
したアルミ被覆鋼線４の鋼線は、内層のアルミ被覆鋼線
３の鋼線よりも、その単位当りの機械的強度を高くして
機械的強度の低下を防止してもよい。In addition, it is desirable for manufacturing that the outer diameters of both the aluminum scarlet steel wires 3 and 4 are approximately the same, and the steel wire of the aluminum coated steel wire 4 with a thicker aluminum coating is the inner layer of the aluminum coated steel wire 3. The mechanical strength per unit may be higher than that of steel wire to prevent a decrease in mechanical strength.
更に管状金属１としては密閉螺旋状に成形したものに限
らず、例えば単なる金属管にしてもよい。Furthermore, the tubular metal 1 is not limited to one formed into a sealed spiral shape, and may be, for example, a simple metal tube.
しかして本考案架空電線は、光ファイバを収納した管状
金属の外周上に、アルミ被覆鋼線を複数層撚合せてなる
架空電線において、前記管状金属に接して撚合せたアル
ミ被覆鋼線のアルミニウム被覆厚を他のアルミ被覆鋼線
のアルミニウム被覆厚より薄くしたので、これを圧縮接
続すると、アルミニウム被覆層が大きく変形するが、上
述のように管状金属に接して撚合せたアルミ被覆鋼線の
アルミニウム被覆厚が薄いので、これの変形量が少く、
この内層のアルミ被覆鋼線によって形成される空隙の変
形が少く、従って空隙内に位置する管状金属の変形が少
く、内部の光ファイバを損傷する恐れが少なくなる。Therefore, the overhead electric wire of the present invention is an overhead electric wire in which multiple layers of aluminum-coated steel wire are twisted on the outer periphery of a tubular metal housing an optical fiber. Since the coating thickness is made thinner than that of other aluminum-coated steel wires, the aluminum coating layer is greatly deformed when these are compressed and connected. Since the aluminum coating is thin, the amount of deformation is small.
The void formed by the inner layer of aluminum-coated steel wire is less deformed, and therefore the tubular metal located within the void is less deformed, reducing the risk of damaging the optical fiber inside.
また内層のアルミ被覆鋼線で不足する導電性等の電気的
特性を、外層のアルミ被覆鋼線で補足し得るので、撚線
層を増加させず、また内層と外層とのアルミ被覆鋼線の
外径を略同−にしても、全体として所要の電気的特性を
得ることができる。In addition, the electrical properties such as conductivity that are lacking in the inner layer aluminum coated steel wire can be supplemented by the outer layer aluminum coated steel wire, so there is no need to increase the number of twisted wire layers, and the aluminum coated steel wire between the inner layer and the outer layer Even if the outer diameters are made approximately the same, the desired electrical characteristics can be obtained as a whole.
図は本考案架空電線の一実施例を示す断面図である。
１・・・・・・管状金属、２・・・・・・光ファイバ、
３，４・・・アルミ被覆鋼線。The figure is a sectional view showing an embodiment of the overhead electric wire of the present invention. 1... Tubular metal, 2... Optical fiber,
3, 4... Aluminum coated steel wire.
Claims (1)
鋼線を複数層撚合せてなる架空電線において、前記管状
金属に接して撚合せたアルミ被覆鋼線のアルミニウム被
覆厚を、他のアルミ被覆鋼線のアルミニウム被覆厚より
薄くしたことを特徴とする架空電線。In an overhead electric wire formed by twisting multiple layers of aluminum-coated steel wires on the outer periphery of a tubular metal housing an optical fiber, the aluminum coating thickness of the aluminum-coated steel wires twisted in contact with the tubular metal is the same as that of other aluminum coatings. An overhead electric wire characterized by having an aluminum coating thinner than that of a steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12385681U JPS6029139Y2 (en) | 1981-08-21 | 1981-08-21 | overhead wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12385681U JPS6029139Y2 (en) | 1981-08-21 | 1981-08-21 | overhead wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5828926U JPS5828926U (en) | 1983-02-24 |
| JPS6029139Y2 true JPS6029139Y2 (en) | 1985-09-04 |
Family
ID=29917744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12385681U Expired JPS6029139Y2 (en) | 1981-08-21 | 1981-08-21 | overhead wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029139Y2 (en) |
-
1981
- 1981-08-21 JP JP12385681U patent/JPS6029139Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5828926U (en) | 1983-02-24 |
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