JPH0113290B2 - - Google Patents
Info
- Publication number
- JPH0113290B2 JPH0113290B2 JP55153831A JP15383180A JPH0113290B2 JP H0113290 B2 JPH0113290 B2 JP H0113290B2 JP 55153831 A JP55153831 A JP 55153831A JP 15383180 A JP15383180 A JP 15383180A JP H0113290 B2 JPH0113290 B2 JP H0113290B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- bending
- tensile strength
- submarine
- core
- 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
- Electric Cable Installation (AREA)
- Cable Accessories (AREA)
Description
【発明の詳細な説明】
本発明は曲げ特性に優れた海底ケーブル相互接
続部もしくはケーブルと中継器きよう体との接続
部の構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure of a submarine cable interconnection section or a connection section between a cable and a repeater enclosure, which has excellent bending properties.
従来、抗張力線を有するケーブルを引き留める
接続部の構造は、第１図に示すように、ケーブル
コア１のまわりに巻かれた抗張力線２が接続円管
もしくは中継器きよう体３の抗張力線引留め金具
に固定され、これにより相互の海底ケーブルに加
わる張力を、接続円管もしくは中継器きよう体に
伝達させて、それらの内部に収納されているフア
イバ接続部または中継器回路への荷重を軽減もし
くは解消している。 Conventionally, the structure of a connection part for holding a cable having a tensile strength wire is as shown in FIG. It is fixed to a fastener, thereby transmitting the tension on the mutual submarine cables to the connecting tube or repeater enclosure, thereby reducing the load on the fiber connections or repeater circuits housed within them. Reduced or eliminated.
ところで現行の海底ケーブル布設工法では、ケ
ーブルの送り出し部分はケーブルが円筒形のドラ
ムエンジンに巻き付けられ、その摩擦力により布
設中のケーブル送り出しが制御可能となつてい
る。このため、海底ケーブルの接続部には、ドラ
ムエンジン通過時に曲げ応力が作用するが、接続
管もしくは中継器きよう体は、それ自体が、抗張
力体、かつ耐圧体であり、厚肉の剛直円管である
ので、接続部の受ける曲げ応力は、両端部に集中
し、ケーブルコア自体の曲げ剛性が小さい場合に
は、接続部端部でケーブルコアが急激な屈曲を生
じ、伝送特性および機械特性が劣化する危険性が
あつた。 By the way, in the current method of laying submarine cables, the cable is wound around a cylindrical drum engine at the cable delivery part, and the cable delivery during installation can be controlled by the frictional force of the cable. For this reason, bending stress acts on the connection part of the submarine cable when it passes through the drum engine, but the connection pipe or repeater casing itself is a tensile strength body and a pressure-resistant body, and is a thick-walled rigid circle. Since it is a pipe, the bending stress that the connection part receives is concentrated at both ends, and if the bending rigidity of the cable core itself is small, the cable core will bend sharply at the end of the connection part, which will affect the transmission characteristics and mechanical properties. There was a risk of deterioration.
そこで、ドラムエンジン等に巻き付けられた時
の曲がりを緩和する目的で、第１図に示すとお
り、接続部両端部にゴムブーツ４を設けている。
しかし従来用いられているゴムブーツは、接続円
管からケーブル側にかけてテーパ形状をなしてい
るので、接続円管とケーブルとの接合部へ集中し
た応力により、第２図に示すように、ケーブルコ
ア部にせん断応力が作用したような曲げ座屈が発
生していた。第２図において１はケーブルコア、
２は抗張力線、３は接続円管、４は硬質ゴムブー
ツ、５はシーブ等である。 Therefore, in order to alleviate the bending caused when the wire is wound around a drum engine or the like, rubber boots 4 are provided at both ends of the connecting portion, as shown in FIG.
However, since conventionally used rubber boots have a tapered shape from the connecting tube to the cable side, stress concentrated at the joint between the connecting tube and the cable causes damage to the cable core, as shown in Figure 2. Bending buckling occurred as if shear stress had been applied to the steel. In Fig. 2, 1 is the cable core,
2 is a tensile strength wire, 3 is a connecting circular pipe, 4 is a hard rubber boot, 5 is a sheave, etc.
本発明は、このようなケーブルコアの急激な屈
曲を防止するため、従来テーパ形状であつたゴム
ブーツの形状を中央部近傍にて最大外径とし、両
側にかけてテーパ状に細くなる形状にしたもので
ある。以下図面により本発明を詳細に説明する。 In order to prevent such sudden bending of the cable core, the present invention changes the conventionally tapered shape of the rubber boot to a shape with the maximum outer diameter near the center and tapering towards both sides. be. The present invention will be explained in detail below with reference to the drawings.
第３図はケーブル外周に抗張力線を有するケー
ブルについての本発明の一実施例を示し、１はケ
ーブルコア、２は抗張力線、３は接続円管もしく
は中継器きよう体、４は硬質ゴムブーツである。
また第４図はケーブル外被内部に抗張力線を有す
るケーブルもしくは抗張力線を持たないケーブル
についての本発明の他の実施例図である。ゴムブ
ーツの形状を従来のテーパ形状のものから第３
図、第４図に示す形状にすることにより、接続部
が曲げを受けた時に、ゴムブーツの最大外径近傍
よりも、ケーブル側における曲がりを大きくする
ことにより、逆に接続円管とゴムブーツの最大外
径部の間におけるケーブルコアの曲がりを減少さ
せる効果を生じ、第５図に示すとおり接続円管
（金属管）とケーブル接合部におけるケーブルコ
アに対するせん断応力を緩和することができ、コ
ア内部の心線の破断や損傷を防ぐことができる。 Fig. 3 shows an embodiment of the present invention for a cable having tensile strength wires on the outer periphery of the cable, where 1 is a cable core, 2 is a tensile strength wire, 3 is a connecting pipe or a repeater enclosure, and 4 is a hard rubber boot. be.
Further, FIG. 4 is a diagram showing another embodiment of the present invention regarding a cable having a tensile strength line inside the cable jacket or a cable having no tensile strength line. The shape of the rubber boots has been changed from the conventional tapered shape to the third shape.
By making the shape shown in Fig. 4, when the connection part is bent, the bending on the cable side is larger than that near the maximum outer diameter of the rubber boot. This has the effect of reducing the bending of the cable core between the outer diameter parts, and as shown in Figure 5, it is possible to alleviate the shear stress on the cable core at the connection circular pipe (metal pipe) and the cable joint, and the inner part of the core can be reduced. Breakage and damage to the core wire can be prevented.
以上説明したとおり、本発明の海底ケーブル接
続部は抗張力線引留め部からケーブル側に対し設
けたゴムブーツの形状を、中央部近傍で最大外径
を持ち、その両側にかけてテーパ形状をなした形
状となつているので、ケーブルと接続円管との接
合部におけるケーブルコアの屈曲を従来形に比べ
て大きく改善することができる利点がある。 As explained above, in the submarine cable connection part of the present invention, the shape of the rubber boot provided from the tensile strength wire retaining part to the cable side is such that it has a maximum outer diameter near the center and tapers toward both sides. This has the advantage that the bending of the cable core at the junction between the cable and the connecting pipe can be greatly improved compared to the conventional type.
第１図は従来の海底ケーブル接続部の説明図、
第２図は曲げを受けた時の従来の海底ケーブル接
続部の説明図、第３図は本発明の一実施例図、第
４図は本発明の他の実施例図、第５図は本発明の
実施例が曲げを受けた時の説明図である。
１……ケーブルコア、２……抗張力線、３……
接続円管または中継器きよう体、４……硬質ゴム
ブーツ、５……シーブ等、６……ケーブル。
Figure 1 is an explanatory diagram of a conventional submarine cable connection.
Figure 2 is an explanatory diagram of a conventional submarine cable connection section when subjected to bending, Figure 3 is a diagram of one embodiment of the present invention, Figure 4 is a diagram of another embodiment of the present invention, and Figure 5 is a diagram of the present invention. FIG. 3 is an explanatory diagram when the embodiment of the invention is subjected to bending. 1... Cable core, 2... Tensile strength wire, 3...
Connecting pipe or relay body, 4...Hard rubber boots, 5...Sheave etc., 6...Cable.
Claims (1)
もしくはケーブルと中継器きよう体との接続部に
おいて、外径が中央部近傍にて最大で両端にかけ
て細くなる回転体形状に成形したゴムブーツで、
前記接続部を外部から補強したことを特徴とする
海底ケーブル接続部。1 Rubber boots molded into the shape of a rotating body with an outer diameter that is maximum near the center and narrows toward both ends at the cable-to-cable connections of submarine cables or the cable-to-repeater enclosure connections,
A submarine cable connection section characterized in that the connection section is reinforced from the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15383180A JPS5778308A (en) | 1980-11-04 | 1980-11-04 | Submarine cable connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15383180A JPS5778308A (en) | 1980-11-04 | 1980-11-04 | Submarine cable connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5778308A JPS5778308A (en) | 1982-05-17 |
| JPH0113290B2 true JPH0113290B2 (en) | 1989-03-06 |
Family
ID=15571035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15383180A Granted JPS5778308A (en) | 1980-11-04 | 1980-11-04 | Submarine cable connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5778308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7582921B2 (en) | 1998-07-03 | 2009-09-01 | Hitachi, Ltd. | Semiconductor device and method for patterning |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4894313A (en) * | 1972-03-14 | 1973-12-05 | ||
| JPS53126181A (en) * | 1977-04-09 | 1978-11-04 | Nippon Telegr & Teleph Corp <Ntt> | Anchor for submarine coaxial cable |
-
1980
- 1980-11-04 JP JP15383180A patent/JPS5778308A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7582921B2 (en) | 1998-07-03 | 2009-09-01 | Hitachi, Ltd. | Semiconductor device and method for patterning |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5778308A (en) | 1982-05-17 |
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