JPH04131802A - Optical fiber cable pneumatic feeder - Google Patents
Optical fiber cable pneumatic feederInfo
- Publication number
- JPH04131802A JPH04131802A JP2251735A JP25173590A JPH04131802A JP H04131802 A JPH04131802 A JP H04131802A JP 2251735 A JP2251735 A JP 2251735A JP 25173590 A JP25173590 A JP 25173590A JP H04131802 A JPH04131802 A JP H04131802A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- feed head
- hollow passage
- fiber cable
- force
- 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 abstract description 54
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 238000005086 pumping Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/54—Underground or underwater installation; Installation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/52—Underground or underwater installation; Installation through tubing, conduits or ducts using fluid, e.g. air
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electric Cable Installation (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野〕
本発明は、光ファイバケーブル空気圧送工法に用いる圧
送装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pressure feeding device used in an optical fiber cable pneumatic feeding method.
：従来の技術〕
光ファイバケーブル空気圧送工法に用いる圧送装置の従
来例を第３図に示す。これはフィードヘッド２１内に３
つの要素を備えている。その１つは中空通路２２であり
、その一端にシール部２３を有する光ファイバ導入口２
４を有し、ｅ端に中空管＃１２との接続口２５を有する
。第２は、この中空通１１２２の途中に設けられた光フ
ァイバ把持部２６であり、中空通！ｉ２２の一部にその
中空通路２２に沿って、流体静力学的な力に打ち勝つ力
で光ファイバケーブル３を進行させる。第３は、中空通
路２２に至る圧＠流体入口２７である。:Prior art] FIG. 3 shows a conventional example of a pumping device used in the optical fiber cable pneumatic transport method. This is 3 in the feed head 21.
It has two elements. One of them is a hollow passage 22, and an optical fiber introduction port 2 having a seal portion 23 at one end thereof.
4, and has a connection port 25 with hollow tube #12 at the e end. The second is the optical fiber grip part 26 provided in the middle of this hollow passage 1122, and the hollow passage! The optical fiber cable 3 is advanced along the hollow passage 22 in a portion of the i22 with a force that overcomes the hydrostatic force. Third is the pressure@fluid inlet 27 leading to the hollow passage 22.
二発明が解決しようとする課題！
しかし、従来の光ファイバゲーブル圧送装置は、フィー
ドヘッド２１内に光ファイバ把持部２６があるため、次
のような欠点がある。Problems that two inventions aim to solve! However, the conventional optical fiber cable feeding device has the following drawbacks because the optical fiber gripping portion 26 is provided in the feed head 21.
（１）フィードヘッド自体が大きくなり、狭い場所での
使用が固数である。(1) The feed head itself is large, making it difficult to use in narrow spaces.
（２）製作費が高い。(2) Production costs are high.
（３）高圧容積が大きくなり、危険度が高い。(3) The high-pressure volume becomes large and the risk is high.
本発明の目的は、前記した従来技術の欠点を解消し、小
型で安全で安価で簡単に製作できる新規な光ファイバケ
ーブル圧送装置を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel optical fiber cable pumping device that overcomes the drawbacks of the prior art described above and is small, safe, inexpensive, and easy to manufacture.
二課題を解決するための手段］
本発明は、予め布設された管路中に光通信用の光ファイ
バを圧送する光ファイバケーブル圧送装置において、一
端にシール部を有する光ファイバ導入口を有し且つ他端
に前記管路との接続口を有する中空通路を備えると共に
、該中空通路に導通した圧縮流体入口を具備したフィー
トヘッドと、該フィードヘッドから独立して前記中空通
路導入口の直前に配置され、前記シール部の流体力学的
な力と摩擦力に打ち勝つ力で光ファイバを進行させる光
ファイバ送込み把持部とを設けた構成のものである。Means for Solving Two Problems] The present invention provides an optical fiber cable pumping device for pumping an optical fiber for optical communication into a pre-installed conduit, which includes an optical fiber inlet having a sealing portion at one end. and a foot head including a hollow passage having a connection port with the pipe line at the other end and a compressed fluid inlet communicating with the hollow passage, and a foot head independent of the feed head and immediately before the hollow passage inlet. This configuration includes an optical fiber feed-in grip section that advances the optical fiber with a force that overcomes the hydrodynamic force and frictional force of the seal section.
「作用：・
本発明では、光ファイバ把持部をフィードヘッドから外
へ出しているため、フィードヘッドが小形化し、小型で
安全で安価て゛簡単な圧送装置が得られる。``Function: In the present invention, since the optical fiber gripping section is protruded from the feed head, the feed head is downsized, and a small, safe, inexpensive, and simple pumping device can be obtained.
二実施例］ 以下、図示の実施例に基づいて説明する。Second Example] The following description will be made based on the illustrated embodiment.
第３図において、１は予め布設された中空管路２の中に
光通信用の光ファイバ３を圧送する光ファイバケーブル
圧送装置の全体を示す。In FIG. 3, reference numeral 1 designates the entire optical fiber cable pumping device for pumping an optical fiber 3 for optical communication into a hollow conduit 2 laid in advance.
この圧送装置１は、上記管路２と接続されたフィードへ
・・ｌド４と、そのバック側（図の左側）に順次に配置
された送込み把持部５及びガイド用ダイス６とで構成さ
れている。即ち、この圧送装置１の特徴は、送込み把持
部５かフィードヘッド４内に在るのではなく、フィード
ヘッド４がら分離独立している点にある。This pressure feeding device 1 is composed of a feed line 4 connected to the pipe line 2, and a feeding grip part 5 and a guide die 6 which are sequentially arranged on the back side (left side in the figure). has been done. That is, the feature of this pressure feeding device 1 is that the feeding grip portion 5 is not located within the feed head 4, but is separated and independent from the feed head 4.
フィードヘッド４はその内部に中空通路７を備えており
、該中空通路の一端（バック１Ｆｌ）にはシール部８を
有する光ファイバ導入口９が、また他端（フロント測）
には上記予め布設された中空管路２との接続口１０が形
成されている。更に、このフィードヘッド４には、その
外部から上記中空通路７の途中へと導通した通路から成
る圧縮流体入口１１が設けられている。The feed head 4 has a hollow passage 7 inside thereof, and an optical fiber introduction port 9 having a seal portion 8 is provided at one end (back 1Fl) of the hollow passage, and an optical fiber introduction port 9 having a seal portion 8 is provided at the other end (front measurement).
A connection port 10 with the hollow conduit 2 installed in advance is formed in the hole. Further, the feed head 4 is provided with a compressed fluid inlet 11 which is a passage communicating from the outside to the middle of the hollow passage 7.
送込み把持部５は、フィードヘッド４のバック側におい
て上記光ファイバ導入口９の直前にて光ファイバ３を把
持するように配置された一対の把持ローラ１２から成り
、矢印方向に回転することにより、光ファイバ導入口シ
ール部８の流体力学的な力と摩擦力とに打ち勝つ力を光
ファイバ３に与え、光ファイバ３をフィードヘッド４側
へ進行させる。The feeding gripping section 5 consists of a pair of gripping rollers 12 arranged to grip the optical fiber 3 immediately before the optical fiber introduction port 9 on the back side of the feed head 4, and by rotating in the direction of the arrow. , a force is applied to the optical fiber 3 to overcome the hydrodynamic force and frictional force of the optical fiber inlet seal portion 8, and the optical fiber 3 is advanced toward the feed head 4 side.
カイト用ダイス６は、上記一対の送込み把持部５の対向
面間に光ファイバ３をガイドするように送り込み把持部
５のバック側に配置され、また、そのカイト用ダイス６
の先端部は送込み把持部５に対する位置調整距離を大き
くとれるように先細状に形成されている。The kite die 6 is arranged on the back side of the feeding grip part 5 so as to guide the optical fiber 3 between the opposing surfaces of the pair of feeding grip parts 5, and the kite die 6
The distal end portion is formed into a tapered shape so that the position adjustment distance with respect to the feeding grip portion 5 can be increased.
上記予め布設されな管８２の中に光通信用の光ファイバ
３を圧送して光ファイバケーブルを布設する際には、第
１図に見られるように、圧！流体人口１１から圧縮空気
等の気体媒体をコンプレンサ（図示せず）にて流し込み
、送込み把持部５の把持ローラ１２を矢印の方向に回転
させる。これにより、ある程度以上の剛性を有する光フ
ァイバケーブル３は、流体の流れに乗せられて、カイト
用ダイス６から直線的に把持ローラ１２．フィードへン
ド４の中空通路７を進み、接続口１０を通してフィード
ヘッド４から中空管８＠２内へと送り込まれる。When installing an optical fiber cable by force-feeding the optical fiber 3 for optical communication into the pre-installed pipe 82, as shown in FIG. A gaseous medium such as compressed air is poured into the fluid tank 11 using a compressor (not shown), and the gripping roller 12 of the feeding gripping section 5 is rotated in the direction of the arrow. As a result, the optical fiber cable 3 having a certain degree of rigidity is carried by the fluid flow and is linearly moved from the kite die 6 to the gripping roller 12. It advances through the hollow passage 7 of the feed end 4 and is sent from the feed head 4 into the hollow tube 8@2 through the connection port 10.
上記構成の圧送装置は、フィードヘッド４．送つ込み把
持部５及びカイト用ダイス６が、光ファイバケーブル３
の送り方向に相互に直線的に分離独立されているため、
第３図に示す従来の圧送装置に比べて装置全体が小型と
なり、狭い場所での圧送が容易にできる。また、送込み
把持部５がフィートヘッド４の外にあるため、その箇所
での光ファイバケーブル３の状態、つまり挫折とか、滑
るとかの状態を監視しながら作業することができる。更
に、フィードヘッド４は単に圧縮空気を流し込むだけの
容器となるため、その製作が簡単で安価になる。また、
高圧容積を小さくできるので、安全性が高くなる。The pressure feeding device having the above configuration includes a feed head 4. The feeding grip part 5 and the kite die 6 are attached to the optical fiber cable 3.
Because they are linearly separated and independent from each other in the feeding direction,
Compared to the conventional pressure-feeding device shown in FIG. 3, the entire device is smaller and can be easily pumped into narrow spaces. Furthermore, since the feeding grip portion 5 is located outside the foot head 4, it is possible to work while monitoring the condition of the optical fiber cable 3 at that location, that is, whether it is buckling or slipping. Furthermore, since the feed head 4 is simply a container into which compressed air is poured, its manufacture is simple and inexpensive. Also,
Since the high-pressure volume can be reduced, safety is increased.
第２図は本発明の他の実施例を示したもので、圧送装置
をより小型化、簡単化した例である。FIG. 2 shows another embodiment of the present invention, in which the pressure feeding device is made smaller and simpler.
これは、上記フィードヘッド４としてＴ字管路コネクク
１３を用いたものであり、圧縮流体人口１１の周りの贅
肉を取り去ってフィードヘッド４の半径方向の寸法を小
さくした形態となっている。This uses a T-shaped conduit connector 13 as the feed head 4, and the radial dimension of the feed head 4 is reduced by removing fat around the compressed fluid port 11.
このＴ字管路コネクク１３の互いに直線的に連通する管
枝路１３ａ、１３ｂか上記中空通路７として用いられ、
これと交差する管枝１ｉ’Ｍ１３ｃが上記圧縮流体人口
１１として用いられている。また、この実施例では、Ｔ
字管路コネクク１３と送り込み把持部５のみで圧送装置
を構成しており、第１図の場合と同様に、Ｔ字管枝路１
３ｃから送り込む気体媒体の流れの力によって、光ファ
イバを中空管路２中に圧送することができる。The pipe branches 13a and 13b of this T-shaped pipe connection 13 that communicate linearly with each other are used as the hollow passage 7,
A pipe branch 1i'M13c intersecting this is used as the compressed fluid population 11. Also, in this example, T
A pressure feeding device is constituted only by the pipe connector 13 and the feed grip part 5, and as in the case of FIG. 1, the T-shaped pipe branch 1
The optical fiber can be pumped into the hollow conduit 2 by the force of the flow of gaseous medium introduced from 3c.
この第２図の構成によると、（１）フィードヘッドが極
めて小さくなる。（２）容易に製作できる。According to the configuration shown in FIG. 2, (1) the feed head becomes extremely small; (2) Easy to manufacture.
（３）安全性が高い、といっな利点が得られる。(3) Advantages such as high safety can be obtained.
［発明の効果］
以上述べたように、本発明の光ファイバケーブル圧送装
置は光ファイバ送込み把持部をフィードヘッドから外へ
出した構成であるため、次のような優れた効果を奏する
。[Effects of the Invention] As described above, since the optical fiber cable pumping device of the present invention has a configuration in which the optical fiber feeding grip portion is extended outside the feed head, it has the following excellent effects.
（１）圧送装置が小型化され、狭い場所での圧送が容易
にできる。(1) The pressure feeding device is downsized and can be easily pumped into narrow spaces.
（２）送込み把持部がフィードヘッドの外にあるため、
その所での光ファイバケーブルの状態（挫折とか、滑る
とか）を監視しながら作業できる。(2) Since the feeding grip is located outside the feed head,
You can work while monitoring the condition of the optical fiber cable at that location (snacks, slips, etc.).
（３）フィードへ・・ｌドは、単にエアーを流し込むだ
けの容器となり、製作が簡単で安価になる。(3) To the feed...The latch becomes a container into which air is simply poured, making it easy and inexpensive to manufacture.
（４）高圧容積を小さくできるので、安全性が高くなる
。(4) Since the high pressure volume can be reduced, safety is increased.
第１図は本発明の実施例を示す光ファイバケーブル圧送
装置の側断面図、第２図は本発明の他の実施例を示す光
ファイバケーブル圧送装置の断面図、第３図は従来の光
ファイバケーブル圧送装置の側断面図である。
図中、１は光ファイバケーブル圧送装置、２は中空管路
、３は光ファイバケーブル、４はフィートヘッド、５は
送込み把持部、６はガイド用ダイス、７は中空通路、８
はシール部、９は光フイアバ導入口、１０は中空管路と
の接続口、１１は圧縮流体入口、１２は把持ローラ、１
３はＴの字管路コネクタを示す。
特許出願人 日立電線株式会社
代理人弁理士 絹 谷 信 雄
第２図Fig. 1 is a side sectional view of an optical fiber cable pumping device showing an embodiment of the present invention, Fig. 2 is a sectional view of an optical fiber cable pumping device showing another embodiment of the invention, and Fig. 3 is a conventional optical fiber cable pumping device. FIG. 3 is a side sectional view of the fiber cable pumping device. In the figure, 1 is an optical fiber cable pressure feeding device, 2 is a hollow conduit, 3 is an optical fiber cable, 4 is a foot head, 5 is a feeding grip part, 6 is a guide die, 7 is a hollow passage, 8
1 is a seal portion, 9 is an optical fiber inlet, 10 is a connection port with a hollow pipe, 11 is a compressed fluid inlet, 12 is a gripping roller, 1
3 shows a T-shaped conduit connector. Patent Applicant Hitachi Cable Co., Ltd. Representative Patent Attorney Nobuo Kinutani Figure 2
Claims (1)
送する光ファイバケーブル圧送装置において、一端にシ
ール部を有する光ファイバ導入口を有し且つ他端に前記
管路との接続口を有する中空通路を備えると共に、該中
空通路に導通した圧縮流体入口を具備したフィードヘッ
ドと、該フィードヘッドから独立して前記中空通路導入
口の直前に配置され、前記シール部の流体力学的な力と
摩擦力に打ち勝つ力で光ファイバを進行させる光ファイ
バ送込み把持部とを設けたことを特徴とする光ファイバ
ケーブル圧送装置。1. An optical fiber cable pumping device that pumps an optical fiber for optical communication into a pre-installed conduit, which has an optical fiber introduction port with a seal at one end and a connection port with the conduit at the other end. a feed head having a hollow passage having a compressed fluid inlet communicating with the hollow passage, and a feed head disposed immediately before the hollow passage inlet independently from the feed head, 1. An optical fiber cable pumping device comprising: an optical fiber feeding grip section that advances the optical fiber with a force that overcomes force and frictional force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25173590A JP2847935B2 (en) | 1990-09-25 | 1990-09-25 | Optical fiber cable pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25173590A JP2847935B2 (en) | 1990-09-25 | 1990-09-25 | Optical fiber cable pumping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04131802A true JPH04131802A (en) | 1992-05-06 |
| JP2847935B2 JP2847935B2 (en) | 1999-01-20 |
Family
ID=17227169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25173590A Expired - Fee Related JP2847935B2 (en) | 1990-09-25 | 1990-09-25 | Optical fiber cable pumping equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2847935B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02210304A (en) * | 1982-11-08 | 1990-08-21 | British Telecommun Plc <Bt> | Inserter for optical cable |
-
1990
- 1990-09-25 JP JP25173590A patent/JP2847935B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02210304A (en) * | 1982-11-08 | 1990-08-21 | British Telecommun Plc <Bt> | Inserter for optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2847935B2 (en) | 1999-01-20 |
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