JP2002082268A - Optical cable pneumatic feeding method - Google Patents
Optical cable pneumatic feeding methodInfo
- Publication number
- JP2002082268A JP2002082268A JP2000276615A JP2000276615A JP2002082268A JP 2002082268 A JP2002082268 A JP 2002082268A JP 2000276615 A JP2000276615 A JP 2000276615A JP 2000276615 A JP2000276615 A JP 2000276615A JP 2002082268 A JP2002082268 A JP 2002082268A
- Authority
- JP
- Japan
- Prior art keywords
- optical cable
- pressure
- receiving plate
- sheath tube
- pressure receiving
- 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.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 claims description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims 1
- 238000005086 pumping Methods 0.000 description 6
- 230000001141 propulsive effect Effects 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Electric Cable Installation (AREA)
Abstract
(57)【要約】
【課題】薄肉のＶＵ管を鞘管として使用できる、低圧空
気による空気圧送工法を提供すること。
【解決手段】鞘管６内に光ケーブル３を空気圧送して布
設する空気圧送工法において、鞘管６内に挿通が容易な
大きさの受圧板７を、布設すべき光ケーブル３の全長に
亘り略等間隔毎に連続的に光ケーブル３上に取付けて布
設していく。
(57) [Problem] To provide a pneumatic feeding method using low-pressure air that can use a thin-walled VU pipe as a sheath pipe. In a pneumatic feeding method in which an optical cable (3) is pneumatically fed into a sheath tube (6) and laid, a pressure receiving plate (7) that can be easily inserted into the sheath tube (6) is provided along the entire length of the optical cable (3) to be laid. It is continuously mounted on the optical cable 3 at regular intervals and laid.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は光ケーブルの空気圧
送工法、特に低圧空気でも機能を発揮する低圧空気圧送
工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for pneumatically feeding an optical cable, and more particularly to a method for pneumatically feeding an optical cable with low pressure air.
【０００２】[0002]
【従来の技術】情報通信用光ケーブルを地下に埋設する
場合、外圧や水などから光ケーブルを保護するために、
ポリエチレン製や鋼製などの鞘管内に布設するのが一般
的である。その布設方法として最近、長距離布設が可能
で、光ケーブルに過度の張力が作用しない空気圧送工法
が採用され始めているが、この工法は７〜１０kg／cm2
の高圧空気を使用するため、鞘管としては、高圧空気に
耐え、しかも気密保持力の高い長尺の高密度ポリエチレ
ン管を使用するのが一般的である。2. Description of the Related Art When an information communication optical cable is buried underground, it is necessary to protect the optical cable from external pressure and water.
It is common to lay in a sheath tube made of polyethylene or steel. As recently as laying methods can long-distance cable laying, but air feeding method excessive tension to the optical cable is not applied is beginning to be adopted, this method is 7~10kg / cm 2
In general, a long high-density polyethylene tube that withstands high-pressure air and has a high hermeticity is used as the sheath tube.
【０００３】従来の空気圧送工法を図３により説明す
る。ドラム１はジャッキ２に軸支されており、光ケーブ
ル３はキャタピラ４に引取られて、該ドラム１より繰出
され、圧送ヘッド５内へ導入される。一方、圧送ヘッド
５内には、コンプレッサ（図示せず）から高圧空気が供
給されており、該圧送ヘッド５と直結している鞘管６の
入り口を経由して、遠方の出口へ向けて高速空気流を発
生させている。A conventional pneumatic feeding method will be described with reference to FIG. The drum 1 is supported by a jack 2, and the optical cable 3 is taken by a caterpillar 4, fed out of the drum 1, and introduced into a pressure feed head 5. On the other hand, high-pressure air is supplied from a compressor (not shown) into the pressure-feeding head 5, and high-speed air is supplied to the distant outlet via the inlet of the sheath tube 6 directly connected to the pressure-feeding head 5. Generating airflow.
【０００４】布設される該光ケーブルは曲げ剛性が大き
いので、該キャタピラ４による推進力が極めて有効に先
端まで伝わり、該光ケーブル３を２００〜３００ｍ遠く
まで後方から推進することが出来るが、それ以上の距離
では高圧空気流の助けを借りないと布設は困難となる。
すなわち鞘管６内に発生している高圧空気流により、光
ケーブル３の先端に取付けた受圧板７に推進力が発生す
るとともに、さらにこの高圧空気流に光ケーブル３を載
せることにより、全長に亘り推進力が生じ、鞘管６内へ
の光ケーブルの長距離布設を可能にしている。Since the optical cable to be laid has a high bending rigidity, the propulsion force of the caterpillar 4 is transmitted to the tip very effectively, and the optical cable 3 can be propelled from a distance of 200 to 300 m from the rear. At distance, installation is difficult without the help of high pressure airflow.
That is, the high-pressure air flow generated in the sheath tube 6 generates a propulsive force on the pressure receiving plate 7 attached to the tip of the optical cable 3, and furthermore, the optical cable 3 is placed on the high-pressure air flow to propell the entire length. A force is generated, enabling long-distance laying of the optical cable into the sheath tube 6.
【０００５】このように空気圧送工法では、キャタピラ
４による押込み推進力と、高圧空気流により発生する推
進力の両者を併用して初めて鞘管６内への長距離布設を
可能としている。As described above, in the pneumatic feeding method, long-distance laying in the sheath tube 6 is possible only by using both the pushing force of the caterpillar 4 and the pushing force generated by the high-pressure air flow.
【０００６】[0006]
【発明が解決しようとする課題】ところで、これまで鞘
管内への光ケーブル布設方法は、主として手引き又はウ
インチによる先端牽引工法を考えていたため、鞘管とし
ては薄肉で割安なＶＵ管、即ち硬質塩化ビニル製の保護
管が一般に用いられてきている。このＶＵ管は高圧空気
を流すと破損する恐れがあるため、低圧しかかけられ
ず、空気圧送工法の適用は困難と考えられてきた。By the way, the method of laying an optical cable in a sheath tube has heretofore mainly considered a manual pulling method or a winch method using a winch. Protection tubes made of aluminum have been commonly used. Since the VU pipe may be damaged when high-pressure air flows, only a low pressure can be applied, and it has been considered that application of the pneumatic feeding method is difficult.
【０００７】しかしながら、このように空気圧送工法が
高密度ポリエチレン管にしか適用できないとすると、次
のような問題が生ずる。However, if the pneumatic feeding method can be applied only to high-density polyethylene pipes, the following problems occur.
【０００８】まず新設ルートに空気圧送工法を採用しよ
うとする場合、鞘管として高密度ポリエチレン管の使用
が必要条件となるが、従来のＶＵ管に比べ高価であるた
め、空気圧送工法の経済的メリットが半減する。また既
設管路にはほとんどＶＵ管が使用されているため、既設
管路には空気圧送工法は使用できないことになる。[0008] First, in the case of adopting the pneumatic feeding method for the new route, it is necessary to use a high-density polyethylene pipe as the sheath pipe. However, since it is more expensive than the conventional VU pipe, it is economical to use the pneumatic feeding method. The benefits are halved. In addition, since most VU pipes are used in existing pipelines, the pneumatic feeding method cannot be used in existing pipelines.
【０００９】もし、今ＶＵ管に適用できる低圧の空気圧
送工法が実現できれば、新設・既設を問わず鞘管として
ＶＵ管が使用できることになり、その経済効果は格段に
向上し、空気圧送工法の需要は大幅に拡大するものと期
待される。If a low-pressure air-pumping method applicable to VU pipes can be realized, VU pipes can be used as sheath pipes regardless of whether they are new or existing ones, and the economic effect thereof will be greatly improved. Demand is expected to increase significantly.
【００１０】一方、空気圧送工法は高圧空気を使用して
いるため、安全性の観点から、装置や部品類は堅牢に製
作されており、高価である上に大きく重くなっている。
さらに十分安全には注意しているものの、常に破裂・破
砕・飛散などの事故の危険性が存在している。特に高圧
空気の場合は高圧油等と異なり、空気の圧縮性のため
に、破裂・破砕などによりエア噴出が始まっても、すぐ
には圧力が低下しない特性があり、被害が大きくなる危
険性がある。[0010] On the other hand, since the pneumatic feeding method uses high-pressure air, devices and components are made robust, expensive, and large and heavy from the viewpoint of safety.
Although caution is given to safety, there is always the danger of accidents such as rupture, crushing, and scattering. Especially in the case of high pressure air, unlike high pressure oil, etc., due to the compressibility of air, even if air ejection starts due to rupture or crushing, the pressure does not immediately decrease, and there is the danger that damage will increase. is there.
【００１１】従って低圧空気圧送工法が実現できれば、
事故の危険性を極端に減らすことができ、安全面の向上
を期待できる上に、コンプレッサや圧送装置さらにホー
スや部品類まで安価・小型・軽量にでき、工法全体が安
価になるものと期待される。Therefore, if the low-pressure pneumatic feeding method can be realized,
It is expected that the risk of accidents can be extremely reduced and safety can be improved.In addition, compressors, pumping equipment, hoses and parts can be made inexpensive, small and lightweight, and the entire construction method is expected to be inexpensive. You.
【００１２】本発明の目的は、薄肉のＶＵ管を鞘管とし
て使用できる、低圧空気による空気圧送工法を提供する
ことにある。An object of the present invention is to provide a pneumatic pumping method using low-pressure air, which can use a thin VU tube as a sheath tube.
【００１３】[0013]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、鞘管内に光ケーブルを空気圧送して布設
する空気圧送工法において、鞘管内に挿通が容易な大き
さの受圧板を、布設すべき光ケーブルの全長に亘り略等
間隔毎に連続的に光ケーブル上に取付けて布設していく
ことを特徴とする（請求項１）。In order to achieve the above object, the present invention provides a pressure receiving plate having a size which can be easily inserted into a sheath tube in an air pressure feeding method in which an optical cable is fed into the sheath tube by air. The optical cable to be laid is attached and laid on the optical cable continuously at substantially equal intervals over the entire length of the optical cable (claim 1).
【００１４】光ケーブル全長に亘り略等間隔毎に受圧板
を連続的に取付け、低圧空気であっても大きな推進力を
発生できるようにしたものであり、低圧空気を取り扱う
ことで薄肉の鞘管であっても空気圧送工法の適用が可能
となる。従って、鞘管が薄肉で割安なＶＵ管から成る場
合（請求項２）であっても、空気圧送工法を適用するこ
とができる。Pressure receiving plates are continuously attached at substantially equal intervals over the entire length of the optical cable so that a large propulsive force can be generated even with low-pressure air. Even if there is, the pneumatic feeding method can be applied. Therefore, even when the sheath tube is made of a thin and inexpensive VU tube (claim 2), the pneumatic feeding method can be applied.
【００１５】[0015]
【発明の実施の形態】以下、本発明を図示の実施形態に
基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the illustrated embodiment.
【００１６】本発明の一実施形態を図１により説明す
る。ドラム１はジャッキ２に軸支されており、光ケーブ
ル３はキャタピラ４に引取られて該ドラム１より繰出さ
れ、圧送ヘッド５内へ導入される。該圧送ヘッド５内に
はコンプレッサ（図示せず）から低圧空気が供給されて
おり、該圧送ヘッド５に直結している鞘管６の入口を経
由して、遠方の出口へ向け高速空気流を発生させてい
る。An embodiment of the present invention will be described with reference to FIG. The drum 1 is supported by a jack 2, and the optical cable 3 is taken out by a caterpillar 4, fed out of the drum 1, and introduced into a pressure feed head 5. Low-pressure air is supplied from a compressor (not shown) into the pumping head 5, and a high-speed air flow is directed to a distant outlet via an inlet of a sheath tube 6 directly connected to the pumping head 5. Is occurring.
【００１７】この高速空気流はあくまで低圧なため、従
来工法のように、光ケーブル先端に１つだけ受圧板を取
付けた状態では、わずかな推進力しか発生できず、まし
て空気流に重い光ケーブルを載せることはできない。こ
のため該キャタピラ４による後方からの推進力が限界に
達すると、それ以上の長距離推進は困難となる。Since this high-speed air flow has only a low pressure, only a small pressure force can be generated when only one pressure receiving plate is attached to the end of the optical cable as in the conventional method, and a heavy optical cable is placed on the air flow. It is not possible. For this reason, when the propulsive force from behind by the caterpillar 4 reaches the limit, it is difficult to prolong it further long distance.
【００１８】しかし、本実施形態では、圧送ヘッド５内
に、受圧板自動取付け装置８が設置されており、図１の
左から右へ移動する光ケーブル３上に、略等間隔毎に受
圧板７を連続して装着していく。なお受圧板７の径は、
空気の流れを止めないように、鞘管６の内径より小さく
作られている。受圧板自動取付け装置８は、本実施形態
の場合、予め光ケーブル３に挿通させてあるＣ形状の受
圧板７を両側から押圧して縮径し、そのＣ形状の一方の
先端部に設けてあるフックを他方の先端部に設けてある
受け部に係合させることにより、Ｃ形状をＯリング状に
閉じて、受圧板７を自動的に光ケーブル３に取付ける装
置として構成されている。However, in the present embodiment, the pressure receiving plate automatic mounting device 8 is provided in the pressure feeding head 5, and the pressure receiving plate 7 is mounted on the optical cable 3 moving from left to right in FIG. Is installed continuously. The diameter of the pressure receiving plate 7 is
It is made smaller than the inner diameter of the sheath tube 6 so as not to stop the air flow. In the case of the present embodiment, the pressure receiving plate automatic mounting device 8 is provided at one end of the C shape by pressing the C-shaped pressure receiving plate 7 previously inserted through the optical cable 3 from both sides to reduce the diameter. By engaging the hook with a receiving portion provided at the other end, the C shape is closed in an O-ring shape, and the pressure receiving plate 7 is automatically attached to the optical cable 3.
【００１９】この受圧板自動取付け装置８により光ケー
ブル３に装着される受圧板７の取付け間隔は、光ケーブ
ル３の種別、鞘管６の内面摩擦係数、空気圧差、受圧板
７の有効面積などにより適切な値をとることが必要とな
る。基本的な考え方としては、１つの受圧板は、次の受
圧板までの光ケーブルを移動できる推進力を発生すれば
良く、 （受圧板間隔）×（単位長当りの光ケーブル重量）×
（光ケーブルと鞘管内面摩擦係数） ＜ （受圧板有効
断面積）×（受圧板前後の圧力差）を満足すれば良い。
これを式で表すと、 Ｌ×Ｗ／１０3 ×μ ＜ π（Ｄ2 −ｄ2 ）／４×Ｐ 但し計算条件としてここでは次の値をとることとする。The mounting interval of the pressure receiving plate 7 mounted on the optical cable 3 by the pressure receiving plate automatic mounting device 8 is appropriate in accordance with the type of the optical cable 3, the inner surface friction coefficient of the sheath tube 6, the air pressure difference, the effective area of the pressure receiving plate 7, and the like. Values must be taken. As a basic idea, one pressure receiving plate only needs to generate a propulsive force capable of moving an optical cable to the next pressure receiving plate, and (pressure receiving plate interval) × (optical cable weight per unit length) ×
(Coefficient of friction between the inner surface of the optical cable and the sheath tube) <(effective cross-sectional area of pressure receiving plate) x (pressure difference before and after pressure receiving plate).
When this is expressed by an equation, L × W / 10 3 × μ <π (D 2 −d 2 ) / 4 × P Here, the following values are taken as calculation conditions.
【００２０】Ｌ：受圧板間隔 ｍ Ｗ：１００心光ケーブル重量 １６０kg／km ２００心光ケーブル重量 ２６０kg／km ３００心光ケーブル重量 ３７４kg／km μ：光ケーブルと鞘管内面摩擦係数（潤滑材有り）０．
２ Ｄ：受圧板外径（ｄ＋１） cm ｄ：１００心光ケーブル外径 １．３cm ２００心光ケーブル外径 １．８cm ３００心光ケーブル外径 ２．２cm Ｐ：受圧板前後の圧力差 kg／cm2 図２に圧力差Ｐをパラメータとして、光ケーブル種類別
に受圧板間隔Ｌを計算した一例を示す。但し厳密な計算
には、鞘管全長に亘る圧力勾配ならびに受圧板前後の圧
力差を求め、各受圧板毎に推進力を計算したものを全長
に亘り積分していき、光ケーブル全重量と比較して受圧
板間隔を決定する必要があるが、現実には圧力勾配及び
空気圧差の測定はいずれも難しいことから、ここでいう
圧力差は鞘管全長に亘る平均的な圧力差と考え、計算結
果としての受圧板間隔は、可能性を判断するための概略
的目安程度に見る必要がある。L: distance between pressure receiving plates m W: weight of 100-core optical cable 160 kg / km weight of 200-core optical cable 260 kg / km weight of 300-core optical cable 374 kg / km μ: coefficient of friction between optical cable and inner surface of sheath tube (with lubricant)
2 D: outside diameter of pressure receiving plate (d + 1) cm d: outside diameter of 100-core optical cable 1.3 cm outside diameter of 200-core optical cable 1.8 cm outside diameter of 300-core optical cable 2.2 cm P: pressure difference before and after pressure receiving plate kg / cm 2 FIG. 2 shows an example of calculating the pressure receiving plate interval L for each type of optical cable using the pressure difference P as a parameter. However, for rigorous calculations, the pressure gradient over the entire length of the sheath tube and the pressure difference before and after the pressure receiving plate are obtained, the propulsion force calculated for each pressure receiving plate is integrated over the entire length, and compared with the total weight of the optical cable. Although it is necessary to determine the pressure receiving plate interval by pressure, it is actually difficult to measure both the pressure gradient and the air pressure difference, so the pressure difference here is considered to be the average pressure difference over the entire length of the sheath tube, and the calculation results It is necessary to look at the pressure receiving plate interval as a rough guide for judging the possibility.
【００２１】図２から、たとえば実在の可能性の高い条
件として、平均的な圧力差０．３kg／cm2 が確保できる
ならば、受圧板間隔は１００心光ケーブルで２６ｍ以
下、２００心光ケーブルで２０ｍ以下、３００心光ケー
ブルで１７ｍ以下とすれば良いことになる。From FIG. 2, for example, if an average pressure difference of 0.3 kg / cm 2 can be ensured as a condition with a high possibility of existence, the pressure receiving plate spacing is 26 m or less for a 100-fiber optical cable and 20 m for a 200-fiber optical cable. Hereinafter, it is sufficient that the length is 17 m or less for a 300-core optical cable.
【００２２】このように受圧板間隔を適切にとれば、低
圧の空気流であっても、空気圧送工法が可能になる領域
のあることが示された。It has been shown that there is a region where the air pressure feeding method can be performed even with a low-pressure air flow by appropriately setting the pressure receiving plate interval.
【００２３】＜他の実施例、変形例＞上記実施形態で
は、受圧板自動取付け装置８を圧送ヘッド５内に設置し
たが、この理由は光ケーブル３上に受圧板７を取付けた
状態で、圧送ヘッド５の入口のシール部を通過させるこ
とが困難なためである。しかし圧送ヘッド５内に受圧板
自動取付け装置８を設置すると、当然ながら圧送ヘッド
５は大きくなり、この大きくなった物の耐圧を確保する
ために一段と堅牢な構造が必要となり、圧送ヘッドが益
々大きく重くなるデメリットが生ずる。そこで、受圧板
自動取付け装置８を圧送ヘッド５内から取り出し、圧送
ヘッド５の手前に設置した形態とすることもできる。た
だし、受圧板を取付けた光ケーブルが、圧送ヘッド５の
入口のシール部を容易に通過できるように工夫が必要と
なる。<Other Embodiments and Modifications> In the above-described embodiment, the automatic pressure receiving plate mounting device 8 is installed in the pressure feeding head 5. This is because the pressure receiving plate 7 is mounted on the optical cable 3 while the pressure receiving plate 7 is mounted. This is because it is difficult to pass through the seal portion at the entrance of the head 5. However, when the pressure receiving plate automatic mounting device 8 is installed in the pressure feeding head 5, the pressure feeding head 5 naturally becomes large, and a more robust structure is required in order to ensure the pressure resistance of the increased material. There is a disadvantage of becoming heavy. Therefore, a configuration in which the automatic pressure receiving plate mounting device 8 is taken out from the inside of the pressure feeding head 5 and is installed in front of the pressure feeding head 5 may be adopted. However, some contrivance is required so that the optical cable to which the pressure receiving plate is attached can easily pass through the seal portion at the entrance of the pressure feed head 5.
【００２４】[0024]
【発明の効果】以上説明したように本発明の光ケーブル
空気圧送工法によれば、光ケーブルの全長に亘り、略等
間隔毎に受圧板を連続的に取付けていくので、低圧な空
気流であっても、光ケーブルの推進に必要な推進力を発
生させることができ、これにより薄肉で割安ではあるが
耐圧の低いＶＵ管であっても鞘管として適用可能な低圧
空気圧送工法を実現することができる効果がある。また
低圧空気を使用できることから、破裂・破砕・飛散など
の事故の危険性が極端に小さくなり、安全性が格段に向
上する利点もある。さらに低圧仕様のため使用するコン
プレッサ、圧送装置、ホース類、部品類などが安価小型
・軽量となり、工法全体が安価になるという大きなメリ
ットが生ずる。As described above, according to the optical cable pneumatic feeding method of the present invention, since the pressure receiving plates are continuously attached at substantially equal intervals over the entire length of the optical cable, a low-pressure air flow is obtained. Also, it is possible to generate a propulsion force necessary for propulsion of an optical cable, thereby realizing a low-pressure pneumatic feeding method that can be used as a sheath tube even in a thin-walled and inexpensive VU tube having a low pressure resistance. effective. In addition, since low-pressure air can be used, there is an advantage that the risk of accidents such as rupture, crushing, and scattering is extremely reduced, and safety is significantly improved. Furthermore, the compressor, pumping device, hoses, parts, etc. used for low-pressure specifications are inexpensive, compact and lightweight, and there is a great merit that the entire construction method is inexpensive.
【００２５】逆に、本発明に高圧空気が使用できる耐圧
の大きな鞘管を用いれば推進力が大きくなることから、
重量の大きなケーブルの布設には極めて有効であり、さ
らに超長距離布設の場合にも有効であるという大きな効
果が生ずる。Conversely, if a sheath tube having a high pressure resistance capable of using high-pressure air is used in the present invention, the propulsion force is increased.
This is extremely effective in laying heavy cables, and is also effective in laying very long distances.
【図１】本発明の光ケーブル空気圧送工法を適用した装
置の一実施形態を示す概念的横断面図である。FIG. 1 is a conceptual cross-sectional view showing an embodiment of an apparatus to which an optical cable pneumatic feeding method of the present invention is applied.
【図２】本発明の一実施形態による受圧板最大取付け間
隔の計算結果の一例を示すグラフである。FIG. 2 is a graph showing an example of a calculation result of a maximum pressure receiving plate mounting interval according to an embodiment of the present invention.
【図３】従来の光ケーブル空気圧送工法の装置を示す概
念的横断面図である。FIG. 3 is a conceptual cross-sectional view showing an apparatus for a conventional optical cable pneumatic feeding method.
１ ドラム ２ ジャッキ ３ 光ケーブル ４ キャタピラ ５ 圧送ヘッド ６ 鞘管 ７ 受圧板 ８ 受圧板自動取付け装置 DESCRIPTION OF SYMBOLS 1 Drum 2 Jack 3 Optical cable 4 Caterpillar 5 Pressure feed head 6 Sheath tube 7 Pressure receiving plate 8 Pressure receiving plate automatic mounting device
フロントページの続き (72)発明者 熊谷 匡敏 茨城県日立市日高町５丁目９番15号 ハイ デックシステムズ株式会社内 Ｆターム(参考） 2H038 CA69 Continued on the front page (72) Inventor Masatoshi Kumagai 5-9-15-1 Hidaka-cho, Hitachi-shi, Ibaraki F-term in F-DEC Systems Corporation 2H038 CA69
Claims (2)
る空気圧送工法において、鞘管内に挿通が容易な大きさ
の受圧板を、布設すべき光ケーブルの全長に亘り略等間
隔毎に連続的に光ケーブル上に取付けて布設していくこ
とを特徴とする光ケーブル空気圧送工法。In an air pressure feeding method for pneumatically feeding an optical cable into a sheath tube and laying the same, a pressure receiving plate having a size easily inserted into the sheath tube is continuously provided at substantially equal intervals over the entire length of the optical cable to be laid. An optical cable pneumatic construction method characterized by being installed on an optical cable and laying it.
管）から成ることを特徴とする請求項１記載の光ケーブ
ル空気圧送工法。2. The method according to claim 1, wherein the sheath tube is a thin hard vinyl chloride tube (VU).
2. An optical cable pneumatic feeding method according to claim 1, comprising a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000276615A JP2002082268A (en) | 2000-09-07 | 2000-09-07 | Optical cable pneumatic feeding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000276615A JP2002082268A (en) | 2000-09-07 | 2000-09-07 | Optical cable pneumatic feeding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002082268A true JP2002082268A (en) | 2002-03-22 |
Family
ID=18762048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000276615A Withdrawn JP2002082268A (en) | 2000-09-07 | 2000-09-07 | Optical cable pneumatic feeding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002082268A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102687355A (en) * | 2009-11-05 | 2012-09-19 | 普拉麦特兹控股股份公司 | Process, pig and pressure housing for laying an elongated element |
| JP2013536668A (en) * | 2010-08-20 | 2013-09-19 | プリュメタ、ホールディング、ソシエテ、アノニム | Method for laying multiple cable sections in series to form a long distance cable connection |
| US9780540B2 (en) | 2010-11-16 | 2017-10-03 | Plumettaz Holding S.A. | Duct rod system for installing an elongated element in a conduit |
-
2000
- 2000-09-07 JP JP2000276615A patent/JP2002082268A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102687355A (en) * | 2009-11-05 | 2012-09-19 | 普拉麦特兹控股股份公司 | Process, pig and pressure housing for laying an elongated element |
| JP2013510547A (en) * | 2009-11-05 | 2013-03-21 | プリュメタ、ホールディング、ソシエテ、アノニム | Method, pig and pressure housing for laying elongated elements |
| US8770550B2 (en) | 2009-11-05 | 2014-07-08 | Plumettaz Holding S.A. | Process, pig and pressure housing for laying an elongated element |
| EP2497170B1 (en) * | 2009-11-05 | 2015-08-12 | Plumettaz Holding S.A. | Process, pig and pressure housing for laying an elongated element |
| JP2013536668A (en) * | 2010-08-20 | 2013-09-19 | プリュメタ、ホールディング、ソシエテ、アノニム | Method for laying multiple cable sections in series to form a long distance cable connection |
| US9287689B2 (en) | 2010-08-20 | 2016-03-15 | Plumettaz Holding Sa | Method for laying a plurality of successive sections of cables in order to form a cabled connection of great length |
| US9780540B2 (en) | 2010-11-16 | 2017-10-03 | Plumettaz Holding S.A. | Duct rod system for installing an elongated element in a conduit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6402123B1 (en) | Method for propelling a cable or the like into a duct | |
| EP0665993B1 (en) | A method of inserting cables into tubing | |
| US5360291A (en) | Method for laying cable or hose in channel and channel therefor | |
| GB2190457A (en) | Hydraulic cable installation system | |
| EP1042696B1 (en) | Method of inserting a light transmitting member into a tube | |
| JP2002082268A (en) | Optical cable pneumatic feeding method | |
| US11329468B2 (en) | System and method for new cable provisioning utilizing buried cable | |
| US20160352085A1 (en) | Method for installing an elongated element into a bended duct | |
| JP3276934B2 (en) | Underground buried pipe structure, its protection pipe, and method of connecting cable to the pipe | |
| JPH02101281A (en) | Ram boring machine laying supply pipe in groove-less manner | |
| US6193216B1 (en) | Pulling device for elongated articles | |
| JP3501043B2 (en) | Optical cable gas pressure method | |
| JPH07150890A (en) | Propusion method for curved pipe line | |
| EP0668977B1 (en) | Soil displacement hammer for replacing underground pipes | |
| NO814009L (en) | EQUIPMENT FOR THE EXTRA STRENGTH AND STRENGTH OF A SUBJECT PIPE | |
| JPH02150803A (en) | Cable laying and recovery method | |
| JP3526406B2 (en) | Protective cover and storage method for cable / hose for advanced equipment of small-diameter pipeline propulsion machine | |
| GB2213229A (en) | Method and apparatus for pipe replacement | |
| EP1738447B1 (en) | Method and device for pulling cables and similar through flexible tubes | |
| EP1339146A1 (en) | Method and apparatus for laying a cable, particularly an optical fibre cable, within a guide tube, by means of a pressurised hydraulic fluid, possibly an emulsified liquid with a part of antifriction liquid, and by means of supplementary dragging force | |
| JP2002112422A (en) | Optical cable pneumatic feeding device and pneumatic feeding method using the same | |
| JPS62160015A (en) | Method of repairing underground conduit | |
| GB2113571A (en) | Lining of pipes | |
| Mayhew et al. | Cost-reduced cable delivery for the 21st century | |
| GB2357328A (en) | Method and apparatus for replacing a conduit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20071204 |