JPS6253106A - Pulling of cable installed in pipeline - Google Patents
Pulling of cable installed in pipelineInfo
- Publication number
- JPS6253106A JPS6253106A JP60192388A JP19238885A JPS6253106A JP S6253106 A JPS6253106 A JP S6253106A JP 60192388 A JP60192388 A JP 60192388A JP 19238885 A JP19238885 A JP 19238885A JP S6253106 A JPS6253106 A JP S6253106A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- conduit
- metal sheath
- pulling
- pulled out
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 （発明の技術分舒） 本発明は、管路内布設ケーブルの引抜き方法に関する。[Detailed description of the invention] (Technical distribution of invention) The present invention relates to a method for pulling out a cable installed in a conduit.
（発明の技術的背景とその問題点）
管路内に布設されたケーブルを、移設、容量アップ等の
ため外部に引抜くことがある。この場合、従来は管路内
に滑剤を塗布した後、ケーブル先端をウィンチ等で牽引
して引抜いている。(Technical Background of the Invention and Problems thereof) Cables installed within a conduit may be pulled out to the outside for relocation, capacity increase, etc. In this case, conventionally, after applying a lubricant to the inside of the conduit, the tip of the cable is pulled out with a winch or the like.
しかして、第２図に示すように既設ケーブル１が管路２
の継目に生じた段差３に挾まれていたりケーブル最外周
の防食層が膨潤した場合にそのままではケーブル引抜き
がきわめて困難か不可能であった。引抜き不可能な場合
は管路を堀り出してその部分から引抜きを行うことがあ
るが、管路は通常、道路下にあり、堀り出しの費用が大
となり時間も長くかかることからそのまま放置されるこ
ともあった。As shown in Fig. 2, the existing cable 1 is connected to the conduit 2.
It is extremely difficult or impossible to pull out the cable if it is caught in the step 3 formed at the seam or if the anticorrosive layer on the outermost circumference of the cable swells. If extraction is not possible, the pipe may be dug out and extracted from that part, but the pipe is usually located under the road and digging it out is expensive and takes a long time, so it is left as is. Sometimes it was done.
（発明の目的）
本発明は、上記の事情に着目してなされたもので、管路
内ケーブルを容易に引抜くことができる管路内布設ケー
ブルの引抜き方法を提供することを目的とする。(Object of the Invention) The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a method for pulling out a cable installed in a conduit, which allows the cable in the conduit to be easily pulled out.
（発明の概要）
即ち、本発明の方法はケーブルコアと金属シースとを別
々に引抜くようにするものであり、必要に応じて金属シ
ー入内に水圧等を加えて金属シースを膨張させケーブル
コアを引抜き易くするものである。(Summary of the invention) That is, the method of the present invention is to pull out the cable core and the metal sheath separately, and if necessary, apply water pressure etc. inside the metal sheath to expand the metal sheath and remove the cable core. This makes it easier to pull out.
（発明の実施例）
第１図に引抜こうとする管路内布設ケーブルの横断面を
示している。このケーブルは３本のケーブルコア４ａ、
４ｂ、４ｃを、３本のスパイラル管５ａ、５ｂ、５ｃを
介してより合わせ、これらを鉛シース６で包覆しクロロ
プレン防食層Ｉを施してなるものである。(Embodiment of the Invention) FIG. 1 shows a cross section of a cable installed in a conduit to be pulled out. This cable has three cable cores 4a,
4b and 4c are twisted together through three spiral tubes 5a, 5b, and 5c, covered with a lead sheath 6, and coated with a chloroprene anticorrosive layer I.
このようなケーブルが第２図に示されるように管路の段
差３に挾まれたり防食層Ｔの膨潤等により管路から引抜
くことができない場合、先ず各ケーブルコア４ａ、４ｂ
、４ｃを牽引ワイヤヲ接続してウィンチ等により引抜き
、次いで鉛シース６および防食層７を引抜くようにする
。If such a cable cannot be pulled out from the conduit due to getting caught in the step 3 of the conduit or swelling of the anti-corrosion layer T as shown in FIG. 2, first remove each cable core 4a, 4b.
, 4c are connected to a traction wire and pulled out using a winch or the like, and then the lead sheath 6 and anti-corrosion layer 7 are pulled out.
このとき、必要に応じてケーブルコアの引抜きを容易に
するために鉛シース６内に水圧あるいは油圧を印加し、
鉛シース６を径方向に膨張させ各ケーブルコアと鉛シー
ス間に隙間を生じさせるようにしてもよい。At this time, water pressure or oil pressure is applied inside the lead sheath 6 to facilitate the pulling out of the cable core as necessary.
The lead sheath 6 may be expanded in the radial direction to create a gap between each cable core and the lead sheath.
なお、本発明は金属シースとしてアルミニウムシースの
場合であっても適用可能である。Note that the present invention is applicable even when an aluminum sheath is used as the metal sheath.
（発明の効果）
以上、本発明の方法によれば、ケーブルコアと金属シー
スとを別々に引抜くことにより、管路内から引抜き困難
または不可能なケーブルでも容易に引抜くことができる
。(Effects of the Invention) As described above, according to the method of the present invention, by separately pulling out the cable core and the metal sheath, even a cable that is difficult or impossible to pull out from inside the conduit can be easily pulled out.
第１図は本発明方法により引抜くべきケーブルを示す横
断面図、第２図は管路内布設ケーブルの引抜き状況を示
す説明図である。
１ −−−−−−−一−−−−−−−−−−−−−ケー
ブル２ −−−−−−−−−−−−−−−−−−−一管
路３ −−−−−−−−−−−−−−−−−−−一段差
４ａ＊４ｂ＋４Ｃ−−−−−−−−−’ｌ”−フｋ ：
） ７６ −−−−−−−−−−−−−−−−−−−一
鉛シース゛・−′″ン
′Ｌ 、）FIG. 1 is a cross-sectional view showing a cable to be pulled out by the method of the present invention, and FIG. 2 is an explanatory view showing the state of pulling out the cable installed in the conduit. 1 −−−−−−−−−−−−−−−−−−−−−−Cable 2 −−−−−−−−−−−−−−−−−−−−−−−−1 Pipeline 3 −−− −−−−−−−−−−−−−−−−1 step difference 4a*4b+4C−−−−−−−−'l”−Fk:
) 76 −−−−−−−−−−−−−−−−−−−Lead sheath゛・−′″L,)
Claims (1)
を外部に引抜く際に、金属シース内のケーブルコアと金
属シースとを別々に引抜くようにすることを特徴とする
管路内布設ケーブルの引抜き方法。 ２、ケーブルコアを引抜く際に金属シース内に流体圧を
印加して金属シースを径方向に脹ますようにする特許請
求の範囲第１項記載の管路内布設ケーブルの引抜き方法
。[Claims] 1. When a cable having a metal sheath installed in a conduit is pulled out to the outside, the cable core inside the metal sheath and the metal sheath are pulled out separately. A method for pulling out cables installed in conduits. 2. The method for pulling out a cable installed in a conduit according to claim 1, wherein fluid pressure is applied within the metal sheath to expand the metal sheath in the radial direction when pulling out the cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60192388A JPS6253106A (en) | 1985-08-30 | 1985-08-30 | Pulling of cable installed in pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60192388A JPS6253106A (en) | 1985-08-30 | 1985-08-30 | Pulling of cable installed in pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6253106A true JPS6253106A (en) | 1987-03-07 |
Family
ID=16290468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60192388A Pending JPS6253106A (en) | 1985-08-30 | 1985-08-30 | Pulling of cable installed in pipeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6253106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009136147A (en) * | 2001-02-20 | 2009-06-18 | Alois Pichler | Method of removing cable core from cable sheath |
-
1985
- 1985-08-30 JP JP60192388A patent/JPS6253106A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009136147A (en) * | 2001-02-20 | 2009-06-18 | Alois Pichler | Method of removing cable core from cable sheath |
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