JPS63107407A - Method of giving relaxation to optical fiber of optical fiber composite overhead grounding wire - Google Patents
Method of giving relaxation to optical fiber of optical fiber composite overhead grounding wireInfo
- Publication number
- JPS63107407A JPS63107407A JP61251838A JP25183886A JPS63107407A JP S63107407 A JPS63107407 A JP S63107407A JP 61251838 A JP61251838 A JP 61251838A JP 25183886 A JP25183886 A JP 25183886A JP S63107407 A JPS63107407 A JP S63107407A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- hollow body
- slot
- thermoplastic hollow
- thermoplastic
- 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
- 239000013307 optical fiber Substances 0.000 title claims description 47
- 238000000034 method Methods 0.000 title claims description 9
- 239000002131 composite material Substances 0.000 title claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 17
- 239000004416 thermosoftening plastic Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Electric Cable Installation (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野〕
本発明は光ファイバに加わる負担を軽減した光ファイバ
複合架空地線の光ファイバ弛み付与方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for providing optical fiber slack in an optical fiber composite overhead ground wire, which reduces the load on the optical fiber.
［従来の技術］
最近、架空地線と光ファイバを複合化した光ファイバ複
合架空地線（○ＰＧＷ）が使用されている。ｏｐａｗは
架線に伴なう張力が常時がかっているうえ、高温時や強
風時にケーブルが伸びるため、光ファイバに伸び、歪が
加わることは避けられない。光ファイバに大きい伸び、
歪が印加された場合、ある時間経過す葛ど面線を生ずる
こともある。したがって、これを防止するため強度の大
ぎい光ファイバを使用しなければならないという不具合
があった。また光ファイバは撚線機等を用いてスロット
付金属体のスロット内に直接収容されるため、スロット
内での余裕がなく、はとんど弛みが取れないという欠点
もあった。[Prior Art] Recently, an optical fiber composite overhead ground wire (PGW), which is a combination of an overhead ground wire and an optical fiber, has been used. Opaw cables are constantly under tension due to the overhead wires, and the cables stretch during high temperatures and strong winds, so it is inevitable that the optical fibers will stretch and become strained. large elongation to optical fiber,
When strain is applied, it may also result in curved surface lines that elapse over a period of time. Therefore, in order to prevent this, there was a problem in that a strong optical fiber had to be used. Furthermore, since the optical fibers are directly housed in the slots of the slotted metal body using a twisting machine or the like, there is a drawback that there is not enough room in the slots and it is difficult to remove the slack.
［発明が解決しようとする問題点］
上記したように金属体に加工したスロット内に光ファイ
バを直接収容するものでは、光ファイバにほとんど弛み
が取れず、ケーブルを架線した後、歪が残り光ファイバ
の４命がすくなるという問題があった。また光ファイバ
に印加される伸びや歪に対処するため高強度を有する光
ファイバを使用しなければならず、高価になっていた。[Problems to be Solved by the Invention] As described above, when an optical fiber is directly housed in a slot machined into a metal body, there is almost no slack in the optical fiber, and after the cable is connected, distortion may remain. There was a problem that fiber's 4 lives were reduced. Furthermore, in order to cope with the elongation and strain applied to the optical fiber, it is necessary to use an optical fiber having high strength, which increases the cost.
したがって、本発明の目的は、前記した従来技術の欠点
を解消し、安価でかつ光ファイバの寿命を仲ばすことが
できる０ＰＧＷの光ファイバ弛み付与方法を提供するこ
とにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a 0PGW optical fiber slackening method that eliminates the drawbacks of the prior art described above, is inexpensive, and can prolong the life of the optical fiber.
［問題点を解決するための手段］
本発明の０ＰＧＷの光ファイバ弛み付与方法は、金属体
に設けたスロット内に熱可塑性中空体を介在させ、その
上に光ファイバを収容して光フフイバユニットとし、そ
の外周にアルミ被覆鋼線を撚り合せて０ＰＧＷを形成し
た後、上記熱可塑性中空体に変形を加えて上記スロット
内における中空体の占有体積を減少させ、光ファイバに
弛みを付与するようにしたものである。[Means for Solving the Problems] The 0PGW optical fiber slackening method of the present invention involves interposing a thermoplastic hollow body in a slot provided in a metal body, accommodating an optical fiber thereon, and forming an optical fiber. After forming a unit and twisting aluminum-coated steel wire around its outer periphery to form a 0PGW, the thermoplastic hollow body is deformed to reduce the volume occupied by the hollow body in the slot and give slack to the optical fiber. This is how it was done.
［作 用コ
光ファイバは金属体に設けたスロット内に撚線機等を用
いて収容される。このため光ファイバはスロット内にぴ
ったり張設され、弛みが生じる余地がない。スロット内
に弾性体を介設すればその弾力によって光ファイバに弛
みを付与さぼることもできるが、収容時にスロット内に
張設される光ファイバによって弾性体が弾性変位して、
その変形が回復できない状態となるため、結果的に弛み
を付与できない。[Operation] The optical fiber is housed in a slot provided in a metal body using a twisting machine or the like. Therefore, the optical fiber is tightly stretched within the slot, leaving no room for slack. If an elastic body is interposed in the slot, its elasticity can give slack to the optical fiber, but the elastic body is elastically displaced by the optical fiber stretched in the slot when it is housed.
Since the deformation becomes unrecoverable, it is not possible to add slack as a result.
従って、光ファイバに弛みを付与させるには、スロット
収容時は光ファイバをスロット内に介設した部材で支持
させて張設し、○ＰＧＷ完成後はその部材を撤去ないし
縮小させて光ファイバをスロット内で浮かせるようにす
ればよい。Therefore, in order to give slack to the optical fiber, when storing it in the slot, the optical fiber is supported and stretched by a member inserted in the slot, and after the PGW is completed, that member is removed or reduced in size to tighten the optical fiber. All you have to do is make it float inside the slot.
［実施例］
本発明の実施例を添付図面に基ついて説明すれば以下の
通りである。[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.
図は本発明のＯＰ Ｇ Ｗの光フフイバ弛み付与方法を
実施する０ＰＧＷの一実施例を示すもので、０ＰＧＷ１
０は、表面にスロツ１−１を設けたロッド状の金属体２
及び金属体２のスロット１の内側に収容された熱可塑性
中空体３、スロット２の外側に収容された光ファイバ心
線４、これらを収容した金属チューブ５から成る光ファ
イバユニット６と、この外周に撚り合せたアルミ被覆鋼
線７とから構成される。The figure shows an example of 0PGW which implements the method of applying slack to optical fibers of OPGW according to the present invention.
0 is a rod-shaped metal body 2 with a slot 1-1 on its surface.
and an optical fiber unit 6 consisting of a thermoplastic hollow body 3 housed inside the slot 1 of the metal body 2, an optical fiber core 4 housed outside the slot 2, and a metal tube 5 housing these, and this outer periphery. It is composed of aluminum-coated steel wires 7 twisted together.
光ファイバ心線４の被覆材料の融点は熱可塑性中空体３
の融点より高いものを使用している。例えば、光ファイ
バ心線４の被覆材ｒ−［として弗素系樹脂、熱可塑性中
空体３としてポリエチレン、スロット付金属体２および
金属チューブ５の材料としてアルミニウムが一般的に使
用される。The melting point of the coating material of the optical fiber core 4 is the melting point of the thermoplastic hollow body 3.
The melting point is higher than the one used. For example, fluorine-based resin is generally used as the coating material r-[ of the optical fiber core 4, polyethylene is used as the thermoplastic hollow body 3, and aluminum is used as the material of the slotted metal body 2 and the metal tube 5.
本０ＰＧＷ１０を巻枠に巻いたまま、あるいは架線後、
金属体１への通゛１等によりこれを加熱し、光ファイバ
の被覆材料を溶融することなく熱可塑性中空体３のみを
溶融させ、体積を縮小させて光ファイバ４に弛みを付与
る。While this 0PGW10 is wound on the reel, or after the overhead wire,
The metal body 1 is heated by passing through the metal body 1, etc., and only the thermoplastic hollow body 3 is melted without melting the coating material of the optical fiber, thereby reducing the volume and giving slack to the optical fiber 4.
なお、上記実施例では熱可塑性中空体３を加熱溶融する
ようにしたが、熱可塑性中空体に薄い厚さのものを使用
して、予め空気等のガス（又は流体）で膨脹させたもの
を収容しておき、０ＰＧＷ完成後あるいは架線後ガスを
抜き取って収縮させ、弛みを付与させるようにすること
も可能である。In the above embodiment, the thermoplastic hollow body 3 was heated and melted, but it is also possible to use a thin thermoplastic hollow body and expand it with a gas (or fluid) such as air in advance. It is also possible to store the wire in the container and, after completion of 0PGW or after the overhead wire is completed, remove the gas and contract it to give slack.
［発明の効果］
以上要するに本発明によれば、０ＰＧＷを形成した後ス
ロット内の熱可塑性中空体を変形してその体積を減少さ
せるようにしたので、０ＰＧＷ形成後容易に光ファイバ
に弛みを付与することができる。その結果、光ファイバ
の寿命が伸び信頼性が向上すると共に、高い強度を有す
る光ファイバを使用する必要がなくなり経済性に富む。[Effects of the Invention] In summary, according to the present invention, after the 0PGW is formed, the thermoplastic hollow body in the slot is deformed to reduce its volume, so that after the 0PGW is formed, the optical fiber is easily given slack. can do. As a result, the life of the optical fiber is extended and its reliability is improved, and there is no need to use optical fibers with high strength, making it highly economical.
図は本発明の０ＰＧＷの光ファイバ弛み付与方法を実施
する０ＰＧＷの一実施例を示す横断面図である。
図中、１はスロット、２は金属体、３は熱可塑性中空体
、４は光ファイバ心線、６は光ファイバユニット、７は
アルミ被ｉＳ：ｉ１ｍ、１０は０ＰＧＷである。
特許出願人 日立電線株式会社
代理人弁理士 絹 谷 信 雄ｌニスロット
６Ｊ、フッイノ叉ユニ・ブト２：４ン山
体 ７°アルミネ皮覆麿岡許策３： ｋ
’６ｒ望＋生中女イ本 ７０： ０ｐＣｒＷ（光）ｒ
イへ。The figure is a cross-sectional view showing an embodiment of an 0PGW that implements the method of adding slack to an optical fiber of the 0PGW according to the present invention. In the figure, 1 is a slot, 2 is a metal body, 3 is a thermoplastic hollow body, 4 is an optical fiber core, 6 is an optical fiber unit, 7 is an aluminum covering iS:i1m, and 10 is 0PGW. Patent Applicant: Hitachi Cable Co., Ltd. Representative Patent Attorney Nobuo Kinuya Nislot 6J, Fuino fork 2: 4 N mountain body 7° Alumine skin covering Marooka Tosaku 3: k
'6r desire + raw middle school girl book 70: 0pCrW (light)r
To I.
Claims (3)
在させ、その上に光ファイバを収容して光ファイバユニ
ットとし、その外周にアルミ被覆鋼線を撚り合せて光フ
ァイバ架空他線を形成した後、上記熱可塑性中空体に変
形を加えて上記スロット内における中空体の占有体積を
減少させ、光ファイバに弛みを付与する光ファイバ複合
架空地線の光ファイバ弛み付与方法。(1) A thermoplastic hollow body is interposed in a slot provided in a metal body, an optical fiber is housed on the hollow body to form an optical fiber unit, and an aluminum coated steel wire is twisted around the outer circumference of the thermoplastic hollow body to form an overhead optical fiber line. A method for imparting slack to an optical fiber in an optical fiber composite overhead ground wire, wherein the thermoplastic hollow body is deformed after forming to reduce the volume occupied by the hollow body within the slot, thereby imparting slack to the optical fiber.
内における中空体の占有体積を減少させる工程が、上記
金属体を加熱して上記熱可塑性中空体を溶融させる工程
であることを特徴とする特許請求の範囲第１項記載の方
法。(2) The step of deforming the thermoplastic hollow body to reduce the volume occupied by the hollow body in the slot is a step of heating the metal body to melt the thermoplastic hollow body. A method according to claim 1.
内における中空体の占有体積を減少させる工程が、膨脹
させた熱可塑性中空体の内部を排気して収縮させる工程
であることを特徴とする特許請求の範囲第１項記載の方
法。(3) The step of deforming the thermoplastic hollow body to reduce the volume occupied by the hollow body within the slot is a step of evacuating the inside of the expanded thermoplastic hollow body to contract it. A method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25183886A JPH0681383B2 (en) | 1986-10-24 | 1986-10-24 | Optical fiber composite optical fiber slack imparting method for overhead ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25183886A JPH0681383B2 (en) | 1986-10-24 | 1986-10-24 | Optical fiber composite optical fiber slack imparting method for overhead ground wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63107407A true JPS63107407A (en) | 1988-05-12 |
| JPH0681383B2 JPH0681383B2 (en) | 1994-10-12 |
Family
ID=17228675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25183886A Expired - Lifetime JPH0681383B2 (en) | 1986-10-24 | 1986-10-24 | Optical fiber composite optical fiber slack imparting method for overhead ground wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681383B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582938A (en) * | 2020-11-12 | 2021-03-30 | 国核电力规划设计研究院有限公司 | Overhead ground wire replacing method |
-
1986
- 1986-10-24 JP JP25183886A patent/JPH0681383B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582938A (en) * | 2020-11-12 | 2021-03-30 | 国核电力规划设计研究院有限公司 | Overhead ground wire replacing method |
| CN112582938B (en) * | 2020-11-12 | 2022-07-26 | 国核电力规划设计研究院有限公司 | Overhead ground wire replacing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0681383B2 (en) | 1994-10-12 |
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