JP2979040B2 - Extra length removing device and method for laying optical fiber cable - Google Patents
Extra length removing device and method for laying optical fiber cableInfo
- Publication number
- JP2979040B2 JP2979040B2 JP4061496A JP6149692A JP2979040B2 JP 2979040 B2 JP2979040 B2 JP 2979040B2 JP 4061496 A JP4061496 A JP 4061496A JP 6149692 A JP6149692 A JP 6149692A JP 2979040 B2 JP2979040 B2 JP 2979040B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber cable
- extra length
- drums
- laying
- 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 - Fee Related
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光ファイバケーブル布
設における余長取り装置および方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for extra length in laying an optical fiber cable.
【０００２】[0002]
【従来の技術】一般に、光ファイバケーブルの布設は、
その接続損失を少なくするために、１，０００ｍ以上の
長尺布設が行われている。光ファイバケーブルの長尺布
設は、布設ルート中のカーブやルート周囲の環境を十分
検討した上で行なう必要がある。なぜなら、布設作業中
に光ファイバケーブルに過大な張力が加わった場合、そ
の光ファイバケーブル断線を引き起こす恐れがあり、ま
た、光ファイバケーブルに過大な張力が加わっていると
布設後の残留歪が大きくなり、その寿命を損なうからで
ある。2. Description of the Related Art Generally, an optical fiber cable is laid.
In order to reduce the connection loss, a long installation of 1,000 m or more is performed. The long installation of the optical fiber cable needs to be performed after sufficiently considering the curve in the installation route and the environment around the route. The reason is that if excessive tension is applied to the optical fiber cable during the installation work, the optical fiber cable may be disconnected, and if excessive tension is applied to the optical fiber cable, the residual strain after installation will increase. This is because the service life is impaired.
【０００３】従って、これまで光ファイバケーブルの長
尺布設は、図４に示すように、布設ルート途中での中間
けん引機Ｓによる中間引きを行なったり、また図５に示
すように、ルート中央付近で一方向に光ファイバケーブ
ルＫを布設し、ドラムに残った光ファイバケーブルＫを
８の字取りした後、これを反対方向に布設するいわゆる
振り分け布設を行なったり、さらに図６に示すように、
光ファイバケーブルＫをある区間布設し、いったん光フ
ァイバケーブルＫを管路等より取り出し、８の字取りを
行った後、次の区間に布設するという操作を繰り返しな
がら布設していく方法が採られていた。[0003] Therefore, a long length of optical fiber cable has been hitherto laid out by an intermediate towing machine S in the middle of the installation route as shown in FIG. 4 or in the vicinity of the center of the route as shown in FIG. After laying the optical fiber cable K in one direction and taking the figure 8 of the optical fiber cable K remaining on the drum, a so-called distribution laying in which the cable is laid in the opposite direction is performed, or as shown in FIG.
The optical fiber cable K is laid in a certain section, the optical fiber cable K is once taken out of a pipe or the like, and the figure 8 is cut out, and then laid in the next section. I was
【０００４】ところで、上述のように布設された光ファ
イバケーブルＫは、図７に示すように、マンホールＭ内
では壁面等の受金物Ｎに固定するようになっているた
め、少し弛ませて、いわゆる余長をとる必要がある。By the way, the optical fiber cable K laid as described above is fixed to a metal receiving object N such as a wall surface in a manhole M as shown in FIG. It is necessary to take a so-called extra length.
【０００５】従来、上記余長をとる方法として、図８に
示すように、マンホールＭ内に光ファイバケーブルＫを
無理なく曲げることができる屈曲部用金車Ｂを最低４個
使用する方法や、一度直線で全区間布設し、後から機械
力もしくは人力により余長分だけ引き戻す方法があっ
た。Conventionally, as a method of taking the above extra length, as shown in FIG. 8, a method of using at least four bending wheel wheels B capable of bending an optical fiber cable K in a manhole M without difficulty, There was a method in which the entire section was laid once in a straight line, and then pulled back by an extra length by mechanical or human power.
【０００６】しかしながら、上記従来の屈曲部用金車Ｂ
を使用する余長取り方法では、該屈曲部用金車Ｂ自体が
重くて嵩ばり、設置しずらく、また、設置空間の確保も
困難であり設置時間がかかる等の問題点があった。ま
た、上記従来の人力による引き戻し方法は、多数の人員
の稼働を必要としており、その改善が望まれていた。However, the above-described conventional bending wheel & pinion B
In the extra length method using the method, the bending wheel B itself is heavy and bulky, it is difficult to install, and there is a problem that it is difficult to secure an installation space and it takes time to install. In addition, the conventional manual pull-back method requires the operation of a large number of personnel, and improvement thereof has been desired.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、上記従来の
問題点を解決するためになされたもので、その目的とす
るところは、装置が簡単で容易に設置することができ、
けん引中でも光ファイバケーブルが捻れる恐れがなく、
マンホール内で容易にケーブル余長を確保することがで
きる光ファイバケーブル布設における余長取り装置およ
び方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to make it possible to install the apparatus simply and easily.
There is no risk of twisting the optical fiber cable during towing,
An object of the present invention is to provide an apparatus and a method for removing extra length in laying an optical fiber cable, which can easily secure an extra length of cable in a manhole.
【０００８】[0008]
【課題を解決するための手段】本発明の光ファイバケー
ブル布設における余長取り装置は、光ファイバケーブル
をマンホール内で余長を取った後に取り外して受金物等
の固定手段に固定する光ファイバケーブル布設における
余長取り装置において、上記光ファイバケーブルを順次
巻き付ける２個のドラムと、これらのドラムを各々回転
自在に取り付ける支軸と、これらの支軸を相互に平行に
配列せしめると共に上記光ファイバケーブルの引っ張り
方向に対して直交する方向に配向せしめるように取り付
ける保持杆と、構成されることを特徴とする。また、上
記両ドラムの円周部の一部が、上記光ファイバケーブル
の引っ張り直線に接するように配置されることも特徴と
する。さらに、上記２つの支軸を保持杆の両端部の同一
側に取り付けると共に、該保持杆の中間部を取付ロッド
に回動自在に取り付け、該取付ロッドをマンホールを横
断するように壁面部に取り付けることも特徴とする。一
方、本発明の光ファイバケーブル布設における余長取り
方法は、上記２個のドラムに、光ファイバケーブルを、
一方のドラムの巻き付け方向と、他方のドラムの巻き付
け方向とが、同一側から見て逆になるように巻き付ける
ことを特徴とする。また、上記２個のドラムに光ファイ
バケーブルを８の字状に巻き付けることも特徴とする。
さらに、前後のマンホールの余長分も取ることを特徴と
する。SUMMARY OF THE INVENTION The present invention relates to an optical fiber cable laying apparatus for laying an optical fiber cable, which removes the optical fiber cable in a manhole after removing the extra length, and fixes the optical fiber cable to a fixing means such as a receiving object. In the extra length installation device for laying, two drums for sequentially winding the optical fiber cable, a spindle for rotatably attaching these drums, and an optical fiber cable for arranging these spindles in parallel with each other. And a holding rod that is attached so as to be oriented in a direction perpendicular to the pulling direction. Also, the invention is characterized in that a part of a circumferential portion of each of the two drums is arranged so as to be in contact with a pulling straight line of the optical fiber cable. Further, the two support shafts are mounted on the same side of both ends of the holding rod, and an intermediate portion of the holding rod is rotatably mounted on the mounting rod, and the mounting rod is mounted on the wall surface so as to cross the manhole. It is also characterized. On the other hand, the extra length method for laying the optical fiber cable according to the present invention is as follows.
It is characterized in that the winding direction of one drum and the winding direction of the other drum are opposite to each other when viewed from the same side. Also, an optical fiber cable is wound around the two drums in a figure eight shape.
Furthermore, it is characterized in that the extra length of the front and rear manholes is also taken.
【０００９】[0009]
【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。図１において、１および１′はフラ
ンジ付きのドラムであって、保持杆２の両端部の同一側
に支軸１ａを介して各々回転自在に取り付けられてい
る。両ドラム１、１′の直径は光ファイバケーブルＫの
心線に切断等の影響が生ぜずマンホールＭの出入口を通
過できる寸法であればいずれでもよい。また両ドラム
１、１′の直径は必ずしも同じでなくてもよい。尚、上
記ドラム１、１′は金車であってもよい。An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numerals 1 and 1 'denote drums with flanges, which are rotatably mounted on the same side of both ends of a holding rod 2 via a support shaft 1a. The diameter of both drums 1 and 1 'may be any size as long as it can pass through the entrance of the manhole M without affecting the core of the optical fiber cable K such as cutting. Also, the diameters of both drums 1, 1 'do not necessarily have to be the same. The drums 1 and 1 'may be wheels.
【００１０】上記保持杆２の中間部は取付ロッド３に回
動自在に取り付けられている。さらに該取付ロッド３は
マンホールＭ内を横断するように壁面部に取り付けられ
ている。An intermediate portion of the holding rod 2 is rotatably mounted on a mounting rod 3. Further, the mounting rod 3 is mounted on the wall so as to cross the inside of the manhole M.
【００１１】図１（Ａ）から明かなように、各ドラム
１、１′の支軸１ａはマンホールＭ内の光ファイバケー
ブルＫの引張り方向に対し直交する方向に配向されてい
と共に、各々の支軸１ａは相互に平行に配列されてい
る。As apparent from FIG. 1A, the support shaft 1a of each of the drums 1 and 1 'is oriented in a direction perpendicular to the direction in which the optical fiber cable K in the manhole M is pulled. The axes 1a are arranged parallel to each other.
【００１２】また、図１（Ｂ）から明らかなように、両
ドラム１、１′の円周部はマンホールＭ内で引っ張られ
る光ファイバケーブルＫの直線に接する位置に配置され
ている。As is apparent from FIG. 1B, the circumferential portions of both drums 1 and 1 'are arranged at positions in contact with the straight line of the optical fiber cable K pulled in the manhole M.
【００１３】以上のように配置された２個のドラム１、
１′の周囲には、光ファイバケーブルＫが順次に１巻き
分だけ巻き付けられる。各ドラム１、１′への１巻き分
の巻取り長の合計が余長寸法となる。この巻き付け態様
としては、図２に示すように、一方のドラム１の巻き付
け方向（左螺旋巻き）と他方のドラム１′の巻き付け方
向（右螺旋巻き）とが同一側から見て逆になるようにな
っている。The two drums 1, arranged as described above,
An optical fiber cable K is sequentially wound by one turn around 1 '. The sum of the winding length of one winding on each of the drums 1 and 1 'is the extra length. As shown in FIG. 2, this winding mode is such that the winding direction of one drum 1 (left spiral winding) and the winding direction of the other drum 1 '(right spiral winding) are opposite when viewed from the same side. It has become.
【００１４】以上のような巻き付け状態で光ファイバケ
ーブルＫをけん引する。巻き方向が同一方向になるた
め、けん引される光ファイバケーブルＫに捻れ等の負担
は発生せず、容易に布設できる。けん引作業が完了した
ら、ドラム１、１′から光ファイバケーブルＫを取り外
す。両ドラム１、１′が保持杆２の片側に取り付けられ
ているので、取り付けが容易である。また、本発明で
は、２個のドラムの巻き付け方向が逆になっているの
で、外した後の光ファイバケーブルＫも捻れない。The optical fiber cable K is pulled in the wound state as described above. Since the winding directions are the same, the towed optical fiber cable K can be easily laid without generating a burden such as twisting. When the towing operation is completed, the optical fiber cable K is removed from the drums 1 and 1 '. Since both drums 1 and 1 'are attached to one side of holding rod 2, attachment is easy. Further, in the present invention, since the winding directions of the two drums are reversed, the optical fiber cable K after removal is not twisted.
【００１５】図３は別の実施例を示すもので、マンホー
ルＭ内に上下方向に２個のドラム４、４を並べて、この
ドラム４、４に光ファイバケーブルＫを８の字状に巻き
付け、この８の字巻付け分を曲げ余長とする装置であ
る。４ａは支軸である。FIG. 3 shows another embodiment, in which two drums 4, 4 are arranged vertically in a manhole M, and an optical fiber cable K is wound around these drums 4, 4 in a figure-eight shape. This is a device in which the figure-eight winding is used as an extra bending length. 4a is a support shaft.
【００１６】尚、必要に応じて、前後２〜３箇所のマン
ホールＭの余長分も含めて余長をとり、それらのマンホ
ールＭに割り振ることも可能である。If necessary, it is also possible to take extra lengths including the extra lengths of the front and rear two or three manholes M and to allocate the extra lengths to those manholes M.
【００１７】[0017]
１）光ファイバケーブルの巻き付け掛け外し操作が簡単
で、けん引が容易である。 ２）光ファイバケーブルに捻れが生じない。 ３）けん引作業と同時にマンホール内で光ファイバケー
ブルの余長が確保できる。1) The operation of winding and unwinding the optical fiber cable is simple, and the towing is easy. 2) No twist occurs in the optical fiber cable. 3) The extra length of the optical fiber cable can be secured in the manhole at the same time as the towing operation.
【図１】（Ａ）は本発明装置の一実施例を示す概要平面
図、（Ｂ）はその概要側面図である。FIG. 1A is a schematic plan view showing one embodiment of the device of the present invention, and FIG. 1B is a schematic side view thereof.
【図２】ドラムへの巻き付け態様を示す説明図である。FIG. 2 is an explanatory diagram showing a mode of winding around a drum.
【図３】本発明装置の別の実施例を示す概要図である。FIG. 3 is a schematic view showing another embodiment of the device of the present invention.
【図４】従来のけん引装置による布設方法の説明図であ
る。FIG. 4 is an explanatory view of a laying method using a conventional towing device.
【図５】従来の振り分け布設方法の説明図である。FIG. 5 is an explanatory view of a conventional distribution laying method.
【図６】従来の８の字布設方法の説明図である。FIG. 6 is an explanatory view of a conventional 8-figure laying method.
【図７】（Ａ）はマンホール内の光ファイバケーブル固
定を説明する平面図、（Ｂ）はその側面図である。7A is a plan view illustrating fixing of an optical fiber cable in a manhole, and FIG. 7B is a side view thereof.
【図８】従来の機械による余長取り方法の説明図であ
る。FIG. 8 is an explanatory diagram of an extra length taking method using a conventional machine.
１ ドラム １′ ドラム １ａ 支軸 ２ 保持杆 ３ 取付ロッド ４ ドラム ４ａ 支軸 Ｂ 屈曲部用金車 Ｋ 光ファイバケーブル Ｍ マンホール Ｎ 受金物 Reference Signs List 1 drum 1 'drum 1a spindle 2 holding rod 3 mounting rod 4 drum 4a spindle B bending wheel K optical fiber cable M manhole N
Claims (6)
を取った後に取り外して受金物等の固定手段に固定する
光ファイバケーブル布設における余長取り装置におい
て、上記光ファイバケーブルを順次巻き付ける２個のド
ラムと、これらのドラムを各々回転自在に取り付ける支
軸と、これらの支軸を相互に平行に配列せしめると共に
上記光ファイバケーブルの引っ張り方向に対して直交す
る方向に配向せしめるように取り付ける保持杆と、から
構成されることを特徴とする光ファイバケーブル布設に
おける余長取り装置。An extra length removing device in an optical fiber cable laying apparatus for removing an optical fiber cable in a manhole after removing the extra length in a manhole and fixing the same to fixing means such as a metal receiving object. Drums and supports for rotatably mounting each of these drums
The axes and these spindles are arranged parallel to each other
It is perpendicular to the pulling direction of the optical fiber cable
Extra length up device in the optical fiber cable installation to the holding rod mounting as allowed to oriented in a direction, characterized in that they are composed of that.
ァイバケーブルの引っ張り直線に接するように配置され
ることを特徴とする請求項１に記載の光ファイバケーブ
ル布設における余長取り装置。2. The extra length of the optical fiber cable laid according to claim 1, wherein a part of a circumferential portion of each of the drums is arranged so as to be in contact with a straight line of the optical fiber cable. apparatus.
に取り付けると共に、該保持杆の中間部を取付ロッドに
回動自在に取り付け、該取付ロッドをマンホールを横断
するように壁面部に取り付けることを特徴とする請求項
１または２に記載の光ファイバケーブル布設における余
長取り装置。3. The two support shafts are mounted on the same side of both ends of a holding rod, and an intermediate portion of the holding rod is rotatably mounted on a mounting rod, and the mounting rod is mounted on a wall so as to cross a manhole. The extra length removing device according to claim 1 or 2, wherein the extra length removing device is attached to a portion.
ケーブル布設における余長取り装置の２個のドラムに、
光ファイバケーブルを、一方のドラムの巻き付け方向
と、他方のドラムの巻き付け方向とが、同一側から見て
逆になるように巻き付けることを特徴とする光ファイバ
ケーブル布設における余長取り方法。4. An optical fiber according to claim 1, 2 or 3.
In two drums of extra length taking device in cable laying ,
An extra fiber length laying method for laying an optical fiber cable, characterized in that an optical fiber cable is wound so that a winding direction of one drum and a winding direction of the other drum are opposite when viewed from the same side.
ケーブル布設における余長取り装置の２個のドラムに、
光ファイバケーブルを８の字状に巻き付けることを特徴
とする光ファイバケーブル布設における余長取り方法。5. The optical fiber according to claim 1, 2 or 3.
In two drums of extra length taking device in cable laying ,
An extra length method for laying an optical fiber cable, wherein the optical fiber cable is wound in a figure eight shape.
徴とする請求項４または５に記載の光ファイバケーブル
布設における余長取り方法。6. The method according to claim 4, wherein the extra length of the front and rear manholes is also taken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4061496A JP2979040B2 (en) | 1992-02-17 | 1992-02-17 | Extra length removing device and method for laying optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4061496A JP2979040B2 (en) | 1992-02-17 | 1992-02-17 | Extra length removing device and method for laying optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05224027A JPH05224027A (en) | 1993-09-03 |
| JP2979040B2 true JP2979040B2 (en) | 1999-11-15 |
Family
ID=13172765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4061496A Expired - Fee Related JP2979040B2 (en) | 1992-02-17 | 1992-02-17 | Extra length removing device and method for laying optical fiber cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2979040B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7599598B2 (en) * | 2006-08-09 | 2009-10-06 | Adc Telecommunications, Inc. | Cable payout systems and methods |
-
1992
- 1992-02-17 JP JP4061496A patent/JP2979040B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05224027A (en) | 1993-09-03 |
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