JP2005012872A

JP2005012872A - Double armoring cable anchor

Info

Publication number: JP2005012872A
Application number: JP2003171657A
Authority: JP
Inventors: Kaoru Shimabukuro; 薫島袋; Yukio Nuha; 幸男饒波; Takenari Sato; 丈成佐藤
Original assignee: Furukawa Electric Co Ltd; Okinawa Electric Power Co Inc
Current assignee: Furukawa Electric Co Ltd; Okinawa Electric Power Co Inc
Priority date: 2003-06-17
Filing date: 2003-06-17
Publication date: 2005-01-13
Anticipated expiration: 2023-06-17
Also published as: JP4044002B2

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a double armoring cable anchor insusceptible to electrolytic corrosion. <P>SOLUTION: A metallic compression sleeve 12 is fitted to the outer circumference at the forward end of each FRP wire 5 constituting an inner armor 6 extending ahead of an outer armor 8 composed of iron wires 7 on the anchoring end side and then the sleeve is compressed. The compression sleeves 12 are arranged along the outer circumference of the tapered surface 14a at the outer circumference of an annular FRP wire supporting metal 14 fitted to the outer circumference of a cable body 4. Each compression sleeve 12 is retained by the tapered surface 15a at the inner circumference of an annular FRP wire anchoring metal 15 fitted to the outer circumference of the FRP wire supporting metal 14. The FRP wire anchoring metal 15 and the FRP wire supporting metal 14 are fastened by a metal 16 for fastening them in the direction for bringing both tapered surfaces 15a and 14a cose to each other. At least the anchoring position in a protective case 19 is filled with waterproofing compound 27. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、ケーブル本体の外周がＦＲＰ線よりなる内側鎧装体と鉄線よりなる外側鎧装体とで二重に鎧装されている二重鎧装ケーブルを引留めている二重鎧装ケーブル引留め部に関するものである。
【０００２】
【従来の技術】
従来のこの種の二重鎧装ケーブル引留め部では、鉄線よりなる外側鎧装体で引き留めていた（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開２０００−２８７３５０号公報（図１）
【０００４】
【発明が解決しようとする課題】
しかしながら、鉄線よりなる外側鎧装体は、海中では電食で腐食され易く、耐久性が悪い問題点があった。
【０００５】
本発明の目的は、電食で腐食され難い二重鎧装ケーブル引留め部を提供することにある。
【０００６】
【課題を解決するための手段】
本発明は、ケーブル本体の外周がＦＲＰ線よりなる内側鎧装体と鉄線よりなる外側鎧装体とで二重に鎧装されている二重鎧装ケーブルを保護ケースの箇所で引留めている二重鎧装ケーブル引留め部を対象とする。
【０００７】
本発明に係る二重鎧装ケーブル引留め部では、引留め端側で鉄線よりなる外側鎧装体がバインド部材でバインドされ、外側鎧装体より先に延びた内側鎧装体を構成する各ＦＲＰ線の先端外周に金属製の圧縮スリーブがそれぞれ嵌め合わせ圧縮され、各圧縮スリーブはケーブル本体の外周に嵌められた環状のＦＲＰ線支え金具の外周のテーパ面の外周に沿って並べられ、各圧縮スリーブはＦＲＰ線支え金具の外周に嵌められた環状のＦＲＰ線引留め金具の内周のテーパ面で押えられ、ＦＲＰ線引留め金具とＦＲＰ線支え金具とは両者のテーパ面の相互間隔を接近させる方向に締結する締結金具で締結され、少なくとも保護ケース内の引き留め箇所には防水コンパウンドが充填されていることを特徴とする。
【０００８】
このようにＦＲＰ線よりなる内側鎧装体で引き留めると、ＦＲＰ線は電食で腐食され難く、耐久性に優れている。しかしながら、ＦＲＰ線は曲げに弱いので、各ＦＲＰ線の端部に圧縮スリーブをそれぞれ嵌め合わせ圧縮し、これらの圧縮スリーブを、ケーブル本体の外周に嵌めた環状のＦＲＰ線支え金具の外周のテーパ面と、該ＦＲＰ線支え金具の外周に嵌めた環状のＦＲＰ線引留め金具の内周のテーパ面とで挟持して引き止めていることにより、確実にＦＲＰ線の引留めを行うことができる。また、引き留め箇所は防水コンパウンドで覆っているので、電食での劣化を防止することができる。
【０００９】
また、本発明に係る二重鎧装ケーブル引留め部では、引留め端側で鉄線よりなる外側鎧装体がバインド部材でバインドされ、外側鎧装体より先に延びた内側鎧装体を構成する各ＦＲＰ線の先端にそれぞれ引留め鉄線が圧縮スリーブの嵌め合わせ圧縮により接続され、環状をなしていて外周がテーパ面となっているＦＲＰ線引留め金具がケーブル本体の外周に嵌められ、各引留め鉄線がＦＲＰ線引留め金具の内周を通って外周に出て折り返されてテーパ面の外周に沿って並べられ、テーパ面の外周の各引留め鉄線はＦＲＰ線引留め金具の外周に嵌められた環状の鉄線締め付け金具の内周のテーパ面で押えられ、鉄線締め付け金具はＦＲＰ線引留め金具の外周での各引留め鉄線の折り返し端部を押える押え金具に締結金具で締結され、保護ケースの外に出ている内側鎧装体と外側鎧装体との露出部は防水処理層で覆われていることを特徴とする。
【００１０】
このようにＦＲＰ線よりなる内側鎧装体で引き留めると、ＦＲＰ線は電食で腐食され難く、耐久性に優れている。しかしながら、ＦＲＰ線は曲げに弱いので、各ＦＲＰ線の端部にそれぞれ引留め鉄線を圧縮スリーブで圧縮接続し、これら引留め鉄線は自由に曲げられるゆえ、環状をなしていて外周がテーパ面となっているＦＲＰ線引留め金具にその内周を通って外周に出て折り返してテーパ面の外周に沿って並べ、テーパ面の外周の各引留め鉄線をＦＲＰ線引留め金具の外周に嵌めた環状の鉄線締め付け金具の内周のテーパ面で押えて引き止めることにより、確実にＦＲＰ線をこれに接続した引留め鉄線を介して引留めることができる。また、保護ケースの外に出ている内側鎧装体と外側鎧装体との露出部は防水処理層で覆っているので、電食での劣化を防止することができる。
【００１１】
【発明の実施の形態】
図１は本発明を二重鎧装ケーブルの中間接続部の引留め部に適用した二重鎧装ケーブル引留め部の実施の形態の第１例を示した要部縦断面図である。
【００１２】
二重鎧装ケーブル１は、ケーブルコア２の外周にプラスチックの押出し被覆によりケーブルシース３が設けられてケーブル本体４が構成されている。このケーブル本体４の外周に多数のＦＲＰ線５の被覆により内側鎧装体６が設けられている。この内側鎧装体６の外周に多数の亜鉛メッキの鉄線７の被覆により外側鎧装体８が設けられている。外側鎧装体８の外周には、防水コンパウンド層９が被覆されている。
【００１３】
このような二重鎧装ケーブル１は、端部で段剥ぎされて、防水コンパウンド層９の端部から、外側鎧装体８、内側鎧装体６、ケーブル本体４のケーブルシース３、ケーブルコア２が順次露出されている。
【００１４】
露出された外側鎧装体８を構成する亜鉛メッキの各鉄線７の端部外周は、バインド部材１０でバインドされている。
【００１５】
露出された内側鎧装体６を構成する各ＦＲＰ線５は、各鉄線７の露出長より長い露出長で露出されている。バインド部材１０に近い側で各ＦＲＰ線５の外周もバインド部材１１でバインドされている。
【００１６】
各ＦＲＰ線５の先端側外周には、それぞれ圧縮スリーブ１２がそれぞれ嵌め合わせ圧縮されている。圧縮スリーブ１２は、例えば図２に示すようにステンレススチールの筒体の一端が開口され、他端が閉じた構造をなしていて、開口端１２ａからＦＲＰ線５の先端側を挿入して、該圧縮スリーブ１２をその外周から図示しない圧縮手段で圧縮することにより、圧縮スリーブ１２がＦＲＰ線５に一体に取付けられている。
【００１７】
これら圧縮スリーブ１２は、ケーブル本体４の外周に絶縁ゴムシート１３を介して嵌められた環状のＦＲＰ線支え金具１４の外周のテーパ面１４ａの外周に沿って並べられている。ＦＲＰ線支え金具１４は、例えばステンレススチール等で形成されていて、テーパ面１４ａの最大径側の外周にフランジ１４ｂが突設されている。
【００１８】
ＦＲＰ線支え金具１４のテーパ面１４ａの外周に沿って並べられている各圧縮スリーブ１２は、ＦＲＰ線支え金具１４の外周に嵌められた環状のＦＲＰ線引留め金具１５の内周のテーパ面１５ａで押えられている。ＦＲＰ線引留め金具１５は、例えばステンレススチール等で形成されていて、その軸心方向の両端の外周にそれぞれフランジ１５ｂ，１５ｃが突設されている。
【００１９】
ＦＲＰ線引留め金具１５とＦＲＰ線支え金具１４とは、両者のテーパ面１４ａ，１５ａの相互間隔を接近させる方向に締結するボルトよりなる締結金具１６で締結されている。
【００２０】
中間接続部では、図示の二重鎧装ケーブル１の反対側にも、図示しないが接続相手である二重鎧装ケーブル１が配置され、その端末は前述したと同様に構成されている。相互のケーブルコア２は図示しないコア接続部で接続されている。相互のＦＲＰ線引留め金具１５は、そのフランジ１５ｂ，１５ｃの外周寄りの箇所に通されたテンションボルト１７と、これに螺合されたナット１８とで連結されている。これにより、両側の二重鎧装ケーブル１は、相互のケーブルコア２のコア接続部に張力をかけないようにテンションボルト１７で相互に連結されている。
【００２１】
このような中間接続部の外周は、保護ケース１９で覆われている。保護ケース１９の端部は縮径筒部１９ａとなっていて、防水コンパウンド層９の端部外周に嵌められ、防水テープ層２０で防水コンパウンド層９に固定されている。
【００２２】
圧縮スリーブ１２，ＦＲＰ線支え金具１４，ＦＲＰ線引留め金具１５等の部材で各ＦＲＰ線５を引き留めている保護ケース１９内の引き留め箇所は、保護ケース１９内を仕切る仕切り板２１で仕切られている。仕切り板２１の外周は、ボルト２２とナット２３で保護ケース１９に連結されている。仕切り板２１の外周と保護ケース１９との間には、絶縁ゴムシート２４が介在されている。また、ＦＲＰ線引留め金具１５のフランジ１５ｂ，１５ｃの外周と保護ケース１９との間にも、絶縁ゴムシート２５が介在されている。仕切り板２１の内周は、防水テープ層２６でケーブルシース３の外周にシールされている。
【００２３】
仕切り板２１で仕切られた保護ケース１９内の端部の引き留め箇所には、防水コンパウンド２７が充填されている。
【００２４】
なお、防水コンパウンド２７は、必要に応じて保護ケース１９内の全体に充填することもできる。
【００２５】
このように二重鎧装ケーブル１を、ＦＲＰ線５よりなる内側鎧装体６で引き留めると、ＦＲＰ線５は電食で腐食され難く、耐久性に優れている。しかしながら、ＦＲＰ線５は曲げに弱いので、各ＦＲＰ線５の端部に圧縮スリーブ１２をそれぞれ嵌め合わせ圧縮し、これらの圧縮スリーブ１２を、ケーブル本体４の外周に嵌めた環状のＦＲＰ線支え金具１４の外周のテーパ面１４ａと、該ＦＲＰ線支え金具１４の外周に嵌めた環状のＦＲＰ線引留め金具１５の内周のテーパ面１５ａとで挟持して引き止めていることにより、確実にＦＲＰ線５の引留めを行うことができる。また、引き留め箇所は防水コンパウンド２７で覆っているので、電食での劣化を防止することができる。
【００２６】
図３は本発明を二重鎧装ケーブルの中間接続部の引留め部に適用した二重鎧装ケーブル引留め部の実施の形態の第２例を示した要部縦断面図である。なお、図１と対応する部分には、同一符号を付けて示している。
【００２７】
二重鎧装ケーブル１の構造は、第１例と同じである。
【００２８】
引留め端側で鉄線７よりなる外側鎧装体８は、バインド部材１０でバインドされている。外側鎧装体８より先に延びた内側鎧装体６を構成する各ＦＲＰ線５の先端には、それぞれ亜鉛メッキの引留め鉄線２８が亜鉛メッキの鉄製の圧縮スリーブ２９の嵌め合わせ圧縮により接続されている。
【００２９】
環状をなしていて外周がテーパ面３０ａとなっている例えばステンレススチール等の金属製のＦＲＰ線引留め金具３０がケーブル本体４の外周に嵌められている。各引留め鉄線２８は、ＦＲＰ線引留め金具３０の内周を通って外周に出て折り返されてテーパ面３０ａの外周に沿って並べられている。テーパ面３０ａの外周を通り過ぎた各引留め鉄線２８の先端部は、ＦＲＰ線５よりなる内側鎧装体６の外周にバインド部材３１でバインドされている。
【００３０】
ＦＲＰ線引留め金具３０のテーパ面３０ａの外周の各引留め鉄線２８は、ＦＲＰ線引留め金具３０の外周に嵌められた環状の鉄線締め付け金具３２の内周のテーパ面３２ａで押えられている。鉄線締め付け金具３２は、例えばステンレススチール等の金属で形成されていて、その軸心方向の両端の外周にそれぞれフランジ３２ｂ，３２ｃが突設されている。
【００３１】
鉄線締め付け金具３２は、ＦＲＰ線引留め金具３０の外周での各引留め鉄線２８の折り返し端部を押えるステンレススチール等よりなる押え金具３３にボルトよりなる締結金具１６で締結されている。この締結金具１６の締結により、鉄線締め付け金具３２が押え金具３３側に引き寄せられ、これにより鉄線締め付け金具３２のテーパ面３２ａが各引留め鉄線２８の折り返し部分に加圧されて、ＦＲＰ線引留め金具３０と鉄線締め付け金具３２とで各引留め鉄線２８が把持されて、各ＦＲＰ線５が引き留められている。
【００３２】
押え金具３３を貫通したケーブルシース３の端部とこの端部から露出されているケーブルコア２の部分の境界部分は防水テープ層２６でシールされている。
【００３３】
中間接続部では、図示の二重鎧装ケーブル１の反対側にも、図示しないが接続相手である二重鎧装ケーブル１が配置され、その端末は前述したと同様に構成されている。相互のケーブルコア２は図示しないコア接続部で接続されている。相互の鉄線締め付け金具３２は、そのフランジ３２ｂ，３２ｃの外周寄りの箇所に通されたテンションボルト１７と、これに螺合されたナット１８とで連結されている。これにより、両側の二重鎧装ケーブル１は、相互のケーブルコア２のコア接続部に張力をかけないようにテンションボルト１７で相互に連結されている。
【００３４】
このような中間接続部の外周は、保護ケース１９で覆われている。保護ケース１９の外に出ている内側鎧装体６と外側鎧装体８との露出部は、防水テープ層よりなる防水処理層３４で覆われている。
【００３５】
このようにＦＲＰ線５よりなる内側鎧装体６で引き留めると、ＦＲＰ線５は電食で腐食され難く、耐久性に優れている。しかしながら、ＦＲＰ線５は曲げに弱いので、各ＦＲＰ線５の端部にそれぞれ引留め鉄線２８を圧縮スリーブ２９で圧縮接続し、これら引留め鉄線２８は自由に曲げられるゆえ、環状をなしていて外周がテーパ面３０ａとなっているＦＲＰ線引留め金具３０にその内周を通って外周に出て折り返してテーパ面３０ａの外周に沿って並べ、テーパ面３０ａの外周の各引留め鉄線２８をＦＲＰ線引留め金具３０の外周に嵌めた環状の鉄線締め付け金具３２の内周のテーパ面３２ａで押えて引き止めることにより、確実にＦＲＰ線５をこれに接続した引留め鉄線２８を介して引留めることができる。また、保護ケース１９の外に出ている内側鎧装体６と外側鎧装体８との露出部は防水処理層３４で覆っているので、電食での劣化を防止することができる。
【００３６】
なお、図１に示す実施の形態の第１例の引留め部は深海での引留め部に適しており、図３に示す実施の形態の第２例の引留め部は浅海での引留め部に適している。この浅海での引留め部は、保護ケース１９内に防水コンパウンド２７を充填しない。この浅海での引留め部は、損傷が起った場合には引き揚げて修理する。
【００３７】
上記例は中間接続部の引留め部に本発明を適用した例について説明したが、本発明はこれに限定されるものではなく、二重鎧装ケーブル１の端末の引留め部にも適用することができる。
【００３８】
【発明の効果】
本発明に係る二重鎧装ケーブル引留め部では、ＦＲＰ線よりなる内側鎧装体と鉄線よりなる外側鎧装体とをもつ二重鎧装ケーブルのＦＲＰ線よりなる内側鎧装体で引き留めているので、ＦＲＰ線は電食で腐食され難く、耐久性に優れている。しかしながら、ＦＲＰ線は曲げに弱いので、各ＦＲＰ線の端部に圧縮スリーブをそれぞれ嵌め合わせ圧縮し、これらの圧縮スリーブを、ケーブル本体の外周に嵌めた環状のＦＲＰ線支え金具の外周のテーパ面と、該ＦＲＰ線支え金具の外周に嵌めた環状のＦＲＰ線引留め金具の内周のテーパ面とで挟持して引き止めていることにより、確実にＦＲＰ線の引留めを行うことができる。また、引き留め箇所は防水コンパウンドで覆っているので、電食での劣化を防止することができる。
【００３９】
また、本発明に係る二重鎧装ケーブル引留め部では、ＦＲＰ線よりなる内側鎧装体と鉄線よりなる外側鎧装体とをもつ二重鎧装ケーブルのＦＲＰ線よりなる内側鎧装体で引き留めているので、ＦＲＰ線は電食で腐食され難く、耐久性に優れている。しかしながら、ＦＲＰ線は曲げに弱いので、各ＦＲＰ線の端部にそれぞれ引留め鉄線を圧縮スリーブで圧縮接続し、これら引留め鉄線は自由に曲げられるゆえ、環状をなしていて外周がテーパ面となっているＦＲＰ線引留め金具にその内周を通って外周に出て折り返してテーパ面の外周に沿って並べ、テーパ面の外周の各引留め鉄線をＦＲＰ線引留め金具の外周に嵌めた環状の鉄線締め付け金具の内周のテーパ面で押えて引き止めることにより、確実にＦＲＰ線をこれに接続した引留め鉄線を介して引留めることができる。また、保護ケースの外に出ている内側鎧装体と外側鎧装体との露出部は防水処理層で覆っているので、電食での劣化を防止することができる。
【図面の簡単な説明】
【図１】本発明を二重鎧装ケーブルの中間接続部の引留め部に適用した二重鎧装ケーブル引留め部の実施の形態の第１例を示した要部縦断面図である。
【図２】実施の形態の第１例で用いている圧縮スリーブの一例を示す縦断面図である。
【図３】本発明を二重鎧装ケーブルの中間接続部の引留め部に適用した二重鎧装ケーブル引留め部の実施の形態の第２例を示した要部縦断面図である。
【符号の説明】
１二重鎧装ケーブル
２ケーブルコア
３ケーブルシース
４ケーブル本体
５ＦＲＰ線
６内側鎧装体
７鉄線
８外側鎧装体
９防水コンパウンド層
１０，１１バインド部材
１２圧縮スリーブ
１２ａ開口端
１３絶縁ゴムシート
１４ＦＲＰ線支え金具
１４ａテーパ面
１４ｂフランジ
１４ｂが突設されている。
１５ＦＲＰ線引留め金具
１５ａテーパ面
１５ｂ，１５ｃフランジ
１６締結金具
１７テンションボルト
１８ナット
１９保護ケース
１９ａ縮径筒部
２０防水テープ層
２１仕切り板
２２ボルト
２３ナット
２４，２５絶縁ゴムシート
２６防水テープ層
２７防水コンパウンド
２８引留め鉄線
２９圧縮スリーブ
３０ＦＲＰ線引留め金具
３０ａテーパ面
３１バインド部材
３２鉄線締め付け金具
３２ａテーパ面
３２ｂ，３２ｃフランジ
３３押え金具
３４防水テープ層[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a double armored cable in which a double armored cable in which the outer periphery of the cable body is double armored by an inner armored body made of FRP wire and an outer armored body made of iron wire is retained. This relates to the retaining portion.
[0002]
[Prior art]
In the conventional double armored cable retaining portion of this type, the outer armored body made of iron wire is retained (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2000-287350 A (FIG. 1)
[0004]
[Problems to be solved by the invention]
However, the outer armor body made of iron wire is easily corroded by electric corrosion in the sea, and has a problem of poor durability.
[0005]
An object of the present invention is to provide a double armored cable retaining portion that is not easily corroded by electric corrosion.
[0006]
[Means for Solving the Problems]
According to the present invention, a double armored cable in which the outer periphery of a cable body is armored in a double manner by an inner armored body made of FRP wire and an outer armored body made of iron wire is retained at a protective case. For double armored cable retainers.
[0007]
In the double armored cable retaining portion according to the present invention, the outer armored body made of iron wire is bound by the binding member on the retaining end side, and each of the inner armored bodies extending ahead of the outer armored body is configured. A metal compression sleeve is fitted and compressed on the outer periphery of the tip of the FRP wire, and each compression sleeve is arranged along the outer periphery of the tapered surface of the annular FRP wire support fitting fitted on the outer periphery of the cable body. The compression sleeve is held by the taper surface of the inner periphery of the annular FRP wire retainer fitting on the outer periphery of the FRP wire support fitting, and the FRP wire retainer and the FRP wire support fitting are spaced apart from each other. It is fastened with a fastening fitting fastened in the approaching direction, and at least a retaining portion in the protective case is filled with a waterproof compound.
[0008]
When the inner armor body made of the FRP wire is used to hold it in this way, the FRP wire is hardly corroded by electric corrosion and has excellent durability. However, since the FRP wires are vulnerable to bending, compression sleeves are fitted and compressed at the ends of the respective FRP wires, and these compression sleeves are tapered on the outer circumference of the annular FRP wire support fitting fitted on the outer circumference of the cable body. Further, the FRP wire can be securely retained by being sandwiched and retained by the tapered surface of the inner periphery of the annular FRP wire retaining metal fitting fitted on the outer periphery of the FRP wire supporting metal fitting. Moreover, since the retaining part is covered with the waterproof compound, deterioration due to electrolytic corrosion can be prevented.
[0009]
Further, in the double armored cable retaining portion according to the present invention, the outer armored body made of iron wire is bound by the binding member on the retaining end side, and the inner armored body extending ahead of the outer armored body is configured. A retaining iron wire is connected to the tip of each FRP wire by fitting compression of the compression sleeve, and an FRP wire retaining metal fitting having an annular shape and a tapered outer surface is fitted to the outer periphery of the cable body, The retaining iron wire passes through the inner periphery of the FRP wire retaining metal fitting, and is folded back and arranged along the outer periphery of the tapered surface. Each retaining iron wire on the outer periphery of the tapered surface is arranged on the outer periphery of the FRP wire retaining metal fitting. It is pressed by the taper surface of the inner circumference of the fitted annular iron wire fastening fitting, and the iron wire fastening fitting is fastened with a fastening fitting to the holding fitting that holds the folded end of each retaining iron wire at the outer periphery of the FRP wire fastening fitting, Protective case Exposed portions of the inner YoroiSokarada and outer YoroiSokarada which are on the outside and being covered by the waterproofing layer.
[0010]
When the inner armor body made of the FRP wire is used to hold it in this way, the FRP wire is hardly corroded by electric corrosion and has excellent durability. However, since the FRP wire is vulnerable to bending, a retaining iron wire is compressed and connected to the end of each FRP wire with a compression sleeve, and since these retaining iron wires are freely bent, they have an annular shape and the outer periphery is a tapered surface. The FRP wire retaining metal fittings that pass through the inner periphery of the FRP wire retaining metal fittings were turned to the outer circumference and folded along the outer circumference of the tapered surface, and the retaining iron wires on the outer circumference of the tapered surface were fitted to the outer periphery of the FRP wire retaining metal fitting. The FRP wire can be securely retained via the retaining iron wire connected to the annular steel wire tightening fitting by being pressed and retained by the tapered surface on the inner periphery of the annular steel wire fastening fitting. In addition, since the exposed portions of the inner armor body and the outer armor body that are outside the protective case are covered with a waterproof layer, deterioration due to electrolytic corrosion can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a longitudinal sectional view of a main part showing a first example of an embodiment of a double armored cable retaining part in which the present invention is applied to a retaining part of an intermediate connection part of a double armored cable.
[0012]
In the double armored cable 1, a cable body 3 is configured by providing a cable sheath 3 by plastic extrusion coating on the outer periphery of a cable core 2. An inner armoring body 6 is provided on the outer periphery of the cable body 4 by covering many FRP wires 5. An outer armoring body 8 is provided on the outer periphery of the inner armoring body 6 by covering with a large number of galvanized iron wires 7. A waterproof compound layer 9 is covered on the outer periphery of the outer armoring body 8.
[0013]
Such a double armored cable 1 is stepped off at the end, and from the end of the waterproof compound layer 9, the outer armored body 8, the inner armored body 6, the cable sheath 3 of the cable body 4, the cable core 2 are sequentially exposed.
[0014]
The outer periphery of the end of each galvanized iron wire 7 constituting the exposed outer armor body 8 is bound by a binding member 10.
[0015]
Each FRP wire 5 constituting the exposed inner armoring body 6 is exposed with an exposure length longer than the exposure length of each iron wire 7. The outer periphery of each FRP line 5 is also bound by the bind member 11 on the side close to the bind member 10.
[0016]
A compression sleeve 12 is fitted and compressed on the outer periphery on the front end side of each FRP line 5. For example, as shown in FIG. 2, the compression sleeve 12 has a structure in which one end of a stainless steel cylinder is opened and the other end is closed, and the distal end side of the FRP line 5 is inserted from the opening end 12a. The compression sleeve 12 is integrally attached to the FRP line 5 by compressing the compression sleeve 12 from the outer periphery by a compression means (not shown).
[0017]
These compression sleeves 12 are arranged along the outer periphery of a tapered surface 14 a on the outer periphery of an annular FRP wire support fitting 14 fitted on the outer periphery of the cable body 4 via an insulating rubber sheet 13. The FRP wire support bracket 14 is made of, for example, stainless steel, and a flange 14b projects from the outer periphery of the tapered surface 14a on the maximum diameter side.
[0018]
The compression sleeves 12 arranged along the outer periphery of the taper surface 14a of the FRP wire support bracket 14 are tapered on the inner periphery of the annular FRP wire retainer 15 fitted on the outer periphery of the FRP wire support bracket 14. It is pressed by. The FRP wire clamp 15 is made of, for example, stainless steel, and flanges 15b and 15c are provided on the outer circumferences of both ends in the axial direction.
[0019]
The FRP wire retaining metal 15 and the FRP wire support metal 14 are fastened by a fastening metal 16 made of a bolt that is fastened in a direction in which the taper surfaces 14a and 15a are close to each other.
[0020]
In the intermediate connection portion, the double armored cable 1 which is a connection partner (not shown) is also arranged on the opposite side of the illustrated double armored cable 1, and the terminal is configured in the same manner as described above. The mutual cable cores 2 are connected by a core connection portion (not shown). The mutual FRP wire clamp 15 is connected by a tension bolt 17 passed through a portion near the outer periphery of the flanges 15b and 15c and a nut 18 screwed into the tension bolt. Thereby, the double armored cables 1 on both sides are coupled to each other by the tension bolts 17 so as not to apply tension to the core connecting portions of the mutual cable cores 2.
[0021]
The outer periphery of such an intermediate connection portion is covered with a protective case 19. The end portion of the protective case 19 is a reduced diameter cylindrical portion 19 a, which is fitted on the outer periphery of the end portion of the waterproof compound layer 9 and is fixed to the waterproof compound layer 9 with a waterproof tape layer 20.
[0022]
The retaining locations in the protective case 19 that retain the FRP wires 5 with members such as the compression sleeve 12, the FRP wire support bracket 14, and the FRP wire retaining bracket 15 are partitioned by a partition plate 21 that partitions the protective case 19. Yes. The outer periphery of the partition plate 21 is connected to the protective case 19 with bolts 22 and nuts 23. An insulating rubber sheet 24 is interposed between the outer periphery of the partition plate 21 and the protective case 19. An insulating rubber sheet 25 is also interposed between the outer circumference of the flanges 15 b and 15 c of the FRP wire clamp 15 and the protective case 19. The inner periphery of the partition plate 21 is sealed to the outer periphery of the cable sheath 3 with a waterproof tape layer 26.
[0023]
A waterproof compound 27 is filled in the retaining portion at the end in the protective case 19 partitioned by the partition plate 21.
[0024]
The waterproof compound 27 can be filled in the entire protective case 19 as necessary.
[0025]
Thus, when the double armored cable 1 is fastened by the inner armored body 6 made of the FRP wire 5, the FRP wire 5 is hardly corroded by electrolytic corrosion and has excellent durability. However, since the FRP wires 5 are vulnerable to bending, the compression sleeves 12 are fitted and compressed at the end portions of the respective FRP wires 5, and the annular FRP wire support metal fitting in which these compression sleeves 12 are fitted to the outer periphery of the cable body 4. 14 and the taper surface 15a on the inner periphery of the annular FRP wire retaining metal fitting 15 fitted on the outer periphery of the FRP wire support metal fitting 14 to securely hold the FRP wire. 5 retentions can be made. Moreover, since the securing location is covered with the waterproof compound 27, deterioration due to electrolytic corrosion can be prevented.
[0026]
FIG. 3 is a longitudinal sectional view of a main part showing a second example of the embodiment of the double armored cable retaining portion in which the present invention is applied to the retaining portion of the intermediate connecting portion of the double armored cable. Note that portions corresponding to those in FIG. 1 are denoted by the same reference numerals.
[0027]
The structure of the double armored cable 1 is the same as that of the first example.
[0028]
The outer armored body 8 made of the iron wire 7 is bound by the binding member 10 on the retaining end side. A galvanized retaining iron wire 28 is connected to the tip of each FRP wire 5 constituting the inner armoring body 6 extending ahead of the outer armoring body 8 by fitting and compression of a galvanized iron compression sleeve 29. Has been.
[0029]
An FRP wire retaining metal fitting 30 made of metal such as stainless steel having an annular outer periphery and a tapered surface 30 a is fitted on the outer periphery of the cable body 4. Each of the retaining iron wires 28 passes through the inner periphery of the FRP wire retaining metal fitting 30, exits to the outer periphery, is folded back, and is arranged along the outer periphery of the tapered surface 30a. The tip of each retaining iron wire 28 that has passed the outer periphery of the tapered surface 30 a is bound to the outer periphery of the inner armored body 6 made of the FRP wire 5 by a bind member 31.
[0030]
Each retaining iron wire 28 on the outer periphery of the tapered surface 30 a of the FRP wire retaining metal 30 is pressed by an inner circumferential tapered surface 32 a of an annular iron wire fastening metal fitting 32 fitted on the outer periphery of the FRP wire retaining metal 30. . The iron wire fastening fitting 32 is made of, for example, a metal such as stainless steel, and flanges 32b and 32c project from the outer circumferences at both ends in the axial direction.
[0031]
The iron wire fastening fitting 32 is fastened by a fastening fitting 16 made of bolts to a holding fitting 33 made of stainless steel or the like that holds the folded end portion of each holding iron wire 28 on the outer periphery of the FRP wire holding fitting 30. By fastening the fastening bracket 16, the iron wire clamping bracket 32 is pulled toward the holding bracket 33, whereby the taper surface 32 a of the iron wire clamping bracket 32 is pressed against the folded portion of each retaining iron wire 28, and FRP wire retaining is performed. Each retaining iron wire 28 is gripped by the metal fitting 30 and the iron wire fastening metal fitting 32, and each FRP wire 5 is held.
[0032]
A boundary portion between the end portion of the cable sheath 3 penetrating the presser fitting 33 and the portion of the cable core 2 exposed from the end portion is sealed with a waterproof tape layer 26.
[0033]
In the intermediate connection portion, a double armor cable 1 which is a connection partner (not shown) is also arranged on the opposite side of the double armor cable 1 shown in the figure, and the terminal is configured in the same manner as described above. The mutual cable cores 2 are connected by a core connection portion (not shown). The mutual iron wire fastening fittings 32 are connected by a tension bolt 17 passed through a portion near the outer periphery of the flanges 32b and 32c and a nut 18 screwed into the tension bolt 17. Thereby, the double armored cables 1 on both sides are coupled to each other by the tension bolts 17 so as not to apply tension to the core connecting portions of the mutual cable cores 2.
[0034]
The outer periphery of such an intermediate connection portion is covered with a protective case 19. The exposed portions of the inner armoring body 6 and the outer armoring body 8 that are outside the protective case 19 are covered with a waterproofing treatment layer 34 made of a waterproof tape layer.
[0035]
If the inner armoring body 6 made of the FRP wire 5 is fastened in this way, the FRP wire 5 is hardly corroded by electrolytic corrosion and has excellent durability. However, since the FRP wires 5 are vulnerable to bending, the retaining iron wires 28 are compression-connected to the end portions of the respective FRP wires 5 by the compression sleeves 29, and these retaining iron wires 28 are freely bent so that they have an annular shape. The FRP wire holding metal fitting 30 whose outer periphery is a tapered surface 30a passes through the inner periphery thereof, comes out to the outer periphery, is folded back and arranged along the outer periphery of the tapered surface 30a, and each retaining iron wire 28 on the outer periphery of the tapered surface 30a is arranged. The FRP wire 5 is securely retained via the retaining iron wire 28 connected to the FRP wire retaining member 30 by being pressed and retained by the tapered surface 32a on the inner periphery of the annular iron wire fastening member 32 fitted to the outer periphery of the FRP wire retaining member 30. be able to. In addition, since the exposed portions of the inner armoring body 6 and the outer armoring body 8 that are outside the protective case 19 are covered with the waterproof treatment layer 34, deterioration due to electrolytic corrosion can be prevented.
[0036]
The retaining portion of the first example of the embodiment shown in FIG. 1 is suitable for a retaining portion in the deep sea, and the retaining portion of the second example of the embodiment shown in FIG. 3 is retained in the shallow sea. Suitable for parts. The shallow water retaining portion does not fill the protective case 19 with the waterproof compound 27. This shallow water retaining part will be lifted and repaired if damaged.
[0037]
In the above example, the example in which the present invention is applied to the retaining portion of the intermediate connection portion has been described. However, the present invention is not limited to this and is also applied to the retaining portion of the terminal of the double armored cable 1. be able to.
[0038]
【The invention's effect】
In the double armored cable retaining portion according to the present invention, the inner armored body made of FRP wire of the double armored cable having the inner armored body made of FRP wire and the outer armored body made of iron wire Therefore, the FRP wire is not easily corroded by electrolytic corrosion and has excellent durability. However, since the FRP wires are vulnerable to bending, compression sleeves are fitted and compressed at the ends of the respective FRP wires, and these compression sleeves are tapered on the outer circumference of the annular FRP wire support fitting fitted on the outer circumference of the cable body. Further, the FRP wire can be securely retained by being sandwiched and retained by the tapered surface of the inner periphery of the annular FRP wire retaining metal fitting fitted on the outer periphery of the FRP wire supporting metal fitting. Moreover, since the securing location is covered with the waterproof compound, deterioration due to electrolytic corrosion can be prevented.
[0039]
Moreover, in the double armored cable retaining portion according to the present invention, the inner armored body made of the FRP wire of the double armored cable having the inner armored body made of the FRP wire and the outer armored body made of the iron wire. Since it is retained, the FRP wire is not easily corroded by electrolytic corrosion and has excellent durability. However, since the FRP wire is vulnerable to bending, a retaining iron wire is compressed and connected to the end of each FRP wire with a compression sleeve. The FRP wire retaining metal fittings that pass through the inner circumference of the FRP wire retaining metal fittings were placed on the outer circumference of the tapered surface, and then folded along the outer circumference of the tapered surface. The FRP wire can be securely retained via the retaining iron wire connected to the annular steel wire tightening fitting by being pressed and retained by the tapered surface on the inner periphery of the annular steel wire fastening fitting. In addition, since the exposed portions of the inner armor body and the outer armor body that are outside the protective case are covered with a waterproof layer, deterioration due to electrolytic corrosion can be prevented.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part showing a first example of an embodiment of a double armored cable retaining portion in which the present invention is applied to a retaining portion of an intermediate connection portion of a double armored cable.
FIG. 2 is a longitudinal sectional view showing an example of a compression sleeve used in the first example of the embodiment.
FIG. 3 is a longitudinal sectional view of a main part showing a second example of an embodiment of a double armored cable retaining portion in which the present invention is applied to a retaining portion of an intermediate connection portion of a double armored cable.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Double armored cable 2 Cable core 3 Cable sheath 4 Cable main body 5 FRP wire 6 Inner armored body 7 Iron wire 8 Outer armored body 9 Waterproof compound layer 10, 11 Binding member 12 Compression sleeve 12a Open end 13 Insulating rubber sheet 14 FRP wire support fitting 14a Tapered surface 14b A flange 14b is projected.
15 FRP wire clamp 15a Tapered surfaces 15b, 15c Flange 16 Fastening bracket 17 Tension bolt 18 Nut 19 Protective case 19a Reduced diameter cylindrical portion 20 Waterproof tape layer 21 Partition plate 22 Bolt 23 Nut 24, 25 Insulating rubber sheet 26 Waterproof tape layer 27 Waterproof compound 28 Retaining iron wire 29 Compression sleeve 30 FRP wire retaining metal fitting 30a Tapered surface 31 Binding member 32 Iron wire fastening metal fitting 32a Tapered surfaces 32b and 32c Flange 33 Presser fitting 34 Waterproof tape layer

Claims

The double armor that holds the double armor cable that is double-armored by the inner armor body made of FRP wire and the outer armor body made of iron wire at the protective case In the cable retaining part,
The outer armor body made of the iron wire is bound by a binding member on the retaining end side, and is made of metal on the outer periphery of each FRP line constituting the inner armor body that extends ahead of the outer armor body The compression sleeves are respectively fitted and compressed, and the compression sleeves are arranged along the outer periphery of the tapered surface of the annular FRP wire support fitting fitted on the outer periphery of the cable body, and the compression sleeves are arranged on the FRP wire. The FRP wire retaining bracket and the FRP wire supporting bracket are held close to each other by the taper surface of the annular FRP wire retaining bracket fitted on the outer periphery of the supporting bracket. A double armored cable retainer, characterized in that it is fastened with a fastener that is fastened in a direction to be closed, and at least a retaining portion in the protective case is filled with a waterproof compound. .

The double armor that holds the double armor cable that is double-armored by the inner armor body made of FRP wire and the outer armor body made of iron wire at the protective case In the cable retaining part,
The outer armor body made of the iron wire on the retaining end side is bound by a binding member, and the retained iron wire is attached to the tip of each of the FRP lines constituting the inner armor body extending ahead of the outer armor body. Are connected by compression compression of a compression sleeve, and an FRP wire holding metal fitting having an annular shape and a tapered outer surface is fitted on the outer periphery of the cable body, and each holding iron wire is fixed to the FRP wire holding wire. An annular looped loop that fits on the outer periphery of the FRP wire retaining metal fitting, which is folded out on the outer periphery through the inner circumference of the metal fitting and arranged along the outer circumference of the tapered surface. The iron wire clamp is clamped to the presser clamp that holds the folded end of each retaining iron wire at the outer periphery of the FRP wire clamp. Double armored cable anchor portion, wherein the exposed portion of said inner YoroiSokarada that go outside and said outer YoroiSokarada of the protective case is covered by the waterproofing layer.