JPH09233634A - Method of removing cable left in field - Google Patents
Method of removing cable left in fieldInfo
- Publication number
- JPH09233634A JPH09233634A JP3380596A JP3380596A JPH09233634A JP H09233634 A JPH09233634 A JP H09233634A JP 3380596 A JP3380596 A JP 3380596A JP 3380596 A JP3380596 A JP 3380596A JP H09233634 A JPH09233634 A JP H09233634A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- residual
- cup member
- adhesive
- terminal portion
- 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
Landscapes
- Electric Cable Installation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地下に埋設された管路
に挿通して敷設される通信用等のケーブルで、途中を切
断して管路に残置される残置ケーブルの撤去工法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing a residual cable which is inserted into a pipeline buried underground and is laid for communication, and which is cut off and left in the pipeline.
【０００２】[0002]
【従来の技術】近年、電柱等で配線されていた通信用お
よび電力用等のケーブルを地下に埋設して都市の美観を
向上させる傾向にある。その方法として、地下にケーブ
ルより少し太い管路が埋設され、この管路中に所定の間
隔でマンホールが設けられる。マンホールは側壁に多数
の貫通孔が開けられ、ダクト口を形成して管路と接続さ
せている。そしてケーブルは管路内を挿通してダクト口
から一旦マンホール内を露出して通り、再びダクト口を
介し管路内を挿通して敷設され、マンホールでケーブル
の保守管理、増設等の作業を行うことが可能になってい
る。そして使用されなくなったケーブルは、簡単に引き
抜ける場合は引き抜いて撤去し、引き抜きが困難な場合
はマンホール内で邪魔にならないように切断され、管路
内に放置されていた。2. Description of the Related Art In recent years, there has been a tendency to improve the aesthetics of a city by burying cables for communication and electric power, which have been wired by utility poles, underground. As a method for this, a pipe that is slightly thicker than the cable is buried underground, and manholes are provided at predetermined intervals in this pipe. The manhole has a large number of through holes on its side wall and forms a duct port to connect to the pipe line. Then, the cable is inserted through the duct and once exposed inside the manhole from the duct port, and then laid again through the duct port through the duct, and maintenance work and expansion of the cable are performed in the manhole. Is possible. When the cable is no longer used, it is pulled out when it can be easily pulled out, and when it is difficult to pull it out, it is cut in the manhole so as not to get in the way and left in the pipeline.
【０００３】ところで都市化が進む中で、ケーブルの取
替えや地下への移行の需要が高まる反面、地面を掘削し
て新しい管路を埋設する工事が非常に困難になってきて
いる。そこでケーブルが放置されている既設管路の再利
用が求められる。この場合に、残置ケーブルの端末がマ
ンホール内で長い余長を有する場合は、例えばケーブル
端末を直接ケーブル引き抜き手段に連結して容易にケー
ブル撤去できる。しかし、ケーブル端末の余長はマンホ
ール内の空間に限定され、マンホール自体もスペース的
にあまり余裕が無いため、残置ケーブルがダクト口付近
や管路側に入り込んで切断され、端末の余長が殆ど無い
ことがあり、この場合は必然的にケーブル端末を確実に
把持することが必要となる。By the way, as urbanization progresses, demands for cable replacement and underground transfer increase, but construction for excavating the ground and burying a new pipeline is becoming very difficult. Therefore, it is required to reuse the existing pipeline where the cable is left unattended. In this case, when the end of the remaining cable has a long extra length in the manhole, the cable end can be directly connected to the cable pulling means to easily remove the cable. However, the surplus length of the cable terminal is limited to the space inside the manhole, and the manhole itself does not have enough space, so the residual cable is cut near the duct opening and the pipeline side, and there is almost no surplus length of the terminal. However, in this case, it is inevitably necessary to surely grip the cable end.
【０００４】ここでケーブルは多数本の線材を束ねて管
路中に敷設されてケーブル自体の重量が非常に大きく、
また管路中を引き抜く際に管路との間に大きい摺動抵抗
等が生じる。このため余長の無いケーブル端末部を把持
する場合は、その端末部をケーブル重量、摺動抵抗等に
打ち勝つ大きい引き抜き力で把持する必要があり、その
引き抜き力は例えば数トンまたは十数トンと要される。
また、この場合のケーブル端末部はダクト口近傍にある
ため、端末部をその内側から把持しなければならない。
従って、余長の無い残置ケーブルの撤去においてケーブ
ル端末部を把持する場合は、マンホール内の簡単な作業
でケーブル端末部をその内側から上述の例えば十数トン
の引き抜き力で強固に把持することが要求される。Here, the cable is bundled with a large number of wire rods and laid in a pipeline, and the weight of the cable itself is very large.
Further, when the pipe is pulled out, a large sliding resistance or the like is generated between the pipe and the pipe. Therefore, when gripping a cable end with no excess length, it is necessary to grip the end with a large pulling force that overcomes the cable weight, sliding resistance, etc., and the pulling force is, for example, several tons or a dozen tons. Required
Further, since the cable end portion in this case is near the duct opening, the end portion must be gripped from the inside.
Therefore, when grasping the cable end portion when removing the remaining cable with no excess length, it is possible to firmly grasp the cable end portion from the inside with a pulling force of, for example, a dozen tons or more, by a simple work inside the manhole. Required.
【０００５】[0005]
【発明が解決しようとする課題】しかし、余長の無い残
置ケーブルの撤去作業に適した撤去装置または工法は、
今まであまり開発されていなくて、開発されていても該
撤去作業に充分対応できるものが少ない。残置ケーブル
は、平衡対ケーブル，同軸ケーブル等があり、特に同軸
ケーブルの場合、ケーブル構造内の密度が高くないた
め、先端が鋭い打ち込みピンを有する把持手段を使用し
ても、残置ケーブルの引抜きに必要な把持力が得られな
いのが実状である。However, a removal device or a construction method suitable for the removal work of a residual cable with no excess length is
It has not been developed so far, and even if it is developed, there are few that can sufficiently deal with the removal work. There are balanced pair cables, coaxial cables, etc. as the residual cable, and especially in the case of the coaxial cable, since the density in the cable structure is not high, even if a gripping means with a sharp tip is used, the residual cable can be pulled out. The reality is that the required gripping force cannot be obtained.
【０００６】本発明は、このような点に鑑み、余長の無
い残置ケーブルの端末部をその内側から大きい引き抜き
力で把持して、確実にケーブル引き抜き撤去することが
できる残置ケーブル撤去工法を提供することを目的とす
る。In view of such a point, the present invention provides a residual cable removing method capable of reliably pulling out and removing the terminal portion of the residual cable having no excess length from its inner side with a large pulling force. The purpose is to do.
【０００７】[0007]
【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、マンホールに連通する管路内に切断され
て放置されている残置ケーブルに対し、該残置ケーブル
の端末部に把持手段を固定し撤去装置本体に連結してケ
ーブルを管路から引き抜く撤去工法において、前記把持
手段は、連結部を有し底部に接着剤注入孔および複数の
貫通孔を設けたカップ部材と、残置ケーブルの端末部に
打ち込まれる複数のピン材とを有し、前記カップ部材を
残置ケーブル端末部に配設し、前記注入孔より接着剤を
残置ケーブルの端末部に注入し、その後、前記複数のピ
ン材を前記注入孔および前記複数の貫通孔を挿通してケ
ーブルの端末部に打ち込むことで、前記カップ部材を残
置ケーブルの端末部に結合させて、前記連結部を撤去装
置に連結して残置ケーブルを管路から引き抜くことを特
徴とする。In order to achieve the above object, the present invention provides a gripping means at a terminal portion of a residual cable for a residual cable that has been cut and left in a conduit communicating with a manhole. In the removal method in which the cable is connected to the removal device main body and the cable is pulled out from the pipe line, the gripping means has a connecting portion, a cup member having an adhesive injection hole and a plurality of through holes at the bottom, and a residual cable. And a plurality of pin members that are driven into the terminal portion of the residual cable, the cup member is disposed in the residual cable terminal portion, the adhesive is injected into the terminal portion of the residual cable through the injection hole, and then the plurality of pins are disposed. By inserting the material into the terminal portion of the cable by inserting the material through the injection hole and the plurality of through holes, the cup member is coupled to the terminal portion of the residual cable, and the coupling portion is coupled to the removal device and left. And wherein pulling the Buru from line.
【０００８】また本発明は、前記接着剤注入に先行し
て、注入後の接着剤が外側へ洩れないように前記複数の
貫通孔をシール材で塞いでおくことを他の特徴とするも
のである。Another feature of the present invention is that prior to the injection of the adhesive, the plurality of through holes are closed with a sealing material so that the injected adhesive does not leak outside. is there.
【０００９】さらに本発明は、前記カップ部材が、該ケ
ーブルの外被と線材との間に生じる環状隙間に挟み込ま
れる直径を有することをもう一つの特徴とするものであ
る。Further, the present invention is characterized in that the cup member has a diameter which is sandwiched in an annular gap formed between the outer jacket of the cable and the wire.
【００１０】また本発明は、前記ピン材の表面を粗面に
形成したことをさらにもう一つの特徴とするものであ
る。Further, the present invention is characterized in that the surface of the pin material is formed into a rough surface.
【００１１】[0011]
【作用】本発明の工法に基づき、残置ケーブルの端末部
がダクト口近傍にあって余長の無い場合において、マン
ホール内でそのケーブル端末部に撤去装置の把持手段を
固定してケーブルを引き抜く。その工法として、まず、
カップ部材の底部に設けられたピン材の貫通孔を発泡材
などのシール材で塞いでおく。次に、残置ケーブル端末
部が外周方向に膨らまないように、該端末部にその外被
の外側または内側からカップ部材をかぶせて配設する。
その後、カップ部材の底部に設けられた接着剤注入孔よ
り接着剤を残置ケーブルの端末部に注入し、樹脂注入
後、複数のピン材を接着剤注入孔および複数の貫通孔を
挿通してケーブルの端末部に打ち込む。このようにカッ
プ部材をピン材と接着剤の相乗作用により残置ケーブル
の端末部に抜き止め固着して、把持手段の把持力を強化
することができる。According to the construction method of the present invention, when the terminal portion of the residual cable is near the duct opening and has no excess length, the gripping means of the removal device is fixed to the cable terminal portion in the manhole to pull out the cable. As the construction method, first,
The through hole of the pin material provided at the bottom of the cup member is closed with a sealing material such as a foam material. Next, in order to prevent the remaining cable terminal portion from bulging in the outer peripheral direction, the terminal portion is disposed by being covered with a cup member from the outside or the inside of the outer cover.
After that, the adhesive is injected into the terminal portion of the remaining cable through the adhesive injection hole provided on the bottom of the cup member, and after the resin is injected, a plurality of pin materials are inserted through the adhesive injection hole and the plurality of through holes to make the cable. Drive into the terminal. In this manner, the synergistic action of the pin material and the adhesive allows the cup member to be secured to the terminal portion of the remaining cable without being fixed, and the gripping force of the gripping means can be strengthened.
【００１２】そして、ピン材打ち込み後の把持手段を引
抜き手段へ連結し、引抜き手段により引張ることで、管
路中の残置ケーブルがその多大な重量等に抗して引き抜
かれて、確実に管路から撤去される。By connecting the gripping means after driving the pin material to the pulling-out means and pulling by the pulling-out means, the remaining cable in the pipeline is pulled out against its great weight and the like, and the pipeline is surely pulled out. Removed from.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１において、通信用等のケーブルの地下敷設構
造について説明する。先ず、道路等の地下にケーブルよ
り少し太い管路１が長い距離埋設され、この管路１中に
所定の間隔でマンホール２が設けられている。マンホー
ル２は側壁２ａに多数の貫通孔３が開けられ、この貫通
孔３にダクト口４が形成されて管路１が接続されてい
る。そして通信用等のケーブル５は長い管路１内を挿通
し、ダクト口４から一旦マンホール２内を露出して通
り、再びダクト口４を介し管路１内を挿通して敷設さ
れ、マンホール２でケーブル５の保守管理、増設等の作
業を行うことが可能である。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, an underground laying structure of a cable for communication or the like will be described. First, a conduit 1 that is a little thicker than a cable is buried under a road or the like for a long distance, and manholes 2 are provided in the conduit 1 at predetermined intervals. The manhole 2 has a large number of through holes 3 formed in the side wall 2a, and a duct port 4 is formed in the through hole 3 to connect the pipe line 1. Then, the cable 5 for communication or the like is inserted through the long pipe line 1, passes through the duct port 4 while exposing the inside of the manhole 2, and is laid again through the duct port 4 through the pipe line 1. With this, it is possible to perform maintenance work of the cable 5 and work such as expansion.
【００１４】ケーブル５は、多数本の線材６を束ね外被
７で被覆して所定の太さに構成される。該ケーブル５は
例えば、ＰＥＣケーブル（芯線にポリエチレン・コーテ
ィング、外被はポリエチレン）、同軸ケーブル（同軸芯
は銅で中心導体と外部導体よりなり、外被は鉛またはポ
リエチレン）、スタルペスケーブル（芯線に紙を巻いて
絶縁していて、外被は鉛またはポリエチレン）などであ
る。また使用されなくなったケーブルの場合は、そのケ
ーブルがマンホール２の部分でも途中を切断して使用不
能にされ、このケーブルが残置ケーブル８となる。The cable 5 is formed by bundling a large number of wire rods 6 and covering them with an outer cover 7 to have a predetermined thickness. The cable 5 is, for example, a PEC cable (a polyethylene wire is coated on the core wire, a polyethylene is a jacket), a coaxial cable (a coaxial core is copper and is composed of a central conductor and an outer conductor, and a jacket is lead or polyethylene), and a Starpes cable (core wire). It is wrapped with paper to insulate it, and the jacket is lead or polyethylene). Further, in the case of a cable that is no longer used, the cable is cut off in the middle of the manhole 2 to make it unusable, and this cable becomes the remaining cable 8.
【００１５】残置ケーブル８は、マンホール２の内部を
露出して通過する領域の任意の箇所で切断して２分割さ
れる。この場合に、残置ケーブル８が例えば図示のよう
に左側のダクト口４近傍で切断されると、右側の残置ケ
ーブル８’は端末部８ａ’がダクト４から出てマンホー
ル２内に長い余長を有して存在するため、この場合はケ
ーブル端末部８ａ’を外側から簡単且つ強固にグリップ
して把持したり、またはケーブル端末部８ａ’を直接ケ
ーブル引き抜き手段等に連結することが可能である。し
かし、左側の残置ケーブル８は端末部８ａがダクト口４
近傍にあり、余長の無い状態になっている。この場合は
作業可能な箇所がダクト口４とケーブル８との間の隙
間、およびケーブル端面８ｂだけである。The remaining cable 8 is cut into two parts by cutting the manhole 2 at an arbitrary position in a region where the inside of the manhole 2 is exposed and passes. In this case, if the residual cable 8 is cut near the left duct opening 4 as shown in the figure, for example, the terminal portion 8a 'of the right residual cable 8'exits from the duct 4 and a long extra length is left in the manhole 2. In this case, the cable terminal portion 8a 'can be easily and firmly gripped and grasped from the outside, or the cable terminal portion 8a' can be directly connected to the cable pulling means or the like. However, the left end of the residual cable 8 has the terminal portion 8a at the duct port 4
It is in the vicinity and there is no extra length. In this case, the only workable areas are the gap between the duct port 4 and the cable 8 and the cable end surface 8b.
【００１６】本発明は、主として上記左側の余長の無い
残置ケーブル８の把持に適したものである。そこで図２
に示すように、残置ケーブル撤去装置１０は、残置ケー
ブル８のダクト口４近傍の端末部８ａをその端面８ｂで
把持する把持手段１１と、この把持手段１１に直接また
は間接的に連結するケーブル引き抜き手段２３とを備え
る。ケーブル引き抜き手段２３は、周知のように例えば
油圧装置等の駆動源により残置ケーブルを大きい引張力
で引張って引き抜くように構成されている。The present invention is mainly suitable for gripping the left side residual cable 8 having no excess length. So Figure 2
As shown in FIG. 2, the residual cable removing device 10 includes a gripping means 11 for gripping the terminal portion 8a of the residual cable 8 near the duct port 4 with its end face 8b, and a cable pulling-out device directly or indirectly connected to the gripping means 11. And means 23. As is well known, the cable pulling-out means 23 is configured to pull out the residual cable with a large pulling force by a driving source such as a hydraulic device and pull out the remaining cable.
【００１７】図３乃至図５において、本発明工法および
該工法に使用される把持手段１１について説明する。把
持手段１１は、連結部１３を有し底部に接着剤注入孔１
６および複数の貫通孔１４を設けたカップ部材１２と、
残置ケーブルの端末部に打ち込まれる複数のピン材１５
とを有している。ここで、連結部１３は円形のフランジ
部となっているが、その他の形状例えば多辺形であって
もよい。またピン材１５は、先端部が鋭く基端部が大き
くなっており、一種のクギ材となっている。但し、ピン
材１５との接着力を高めるために、ピン材１５の表面に
所要の凹凸を形成させて、その表面を粗面にすると更に
良い。3 to 5, the construction method of the present invention and the gripping means 11 used in the construction method will be described. The gripping means 11 has a connecting portion 13 and an adhesive injection hole 1 at the bottom.
6 and a cup member 12 having a plurality of through holes 14,
A plurality of pin materials 15 that are driven into the end portions of the remaining cables
And Here, the connecting portion 13 is a circular flange portion, but may have another shape, such as a polygon. The pin material 15 has a sharp tip and a large base end, and is a kind of nail material. However, in order to increase the adhesive force with the pin material 15, it is more preferable to form the required unevenness on the surface of the pin material 15 and make the surface rough.
【００１８】カップ部材１２を残置ケーブル８の端末部
８ａに固定する工法としては、まず、カップ部材１２の
底部に設けられた貫通孔１４を発泡材などのシール材１
７で塞いでおく。次に、該ケーブル端末部８ａが外周方
向に膨らまないように、ケーブル端末部８ａに外被７の
外側または内側からカップ部材１２をかぶせて配設す
る。その後、カップ部材１２の底部に設けた接着剤注入
孔１６よりケーブル端末部８ａに接着剤を注入する。そ
のとき、複数の貫通孔１４がシール材１７で塞いである
ため、注入後の接着剤が外側へ洩れることが防止され
る。As a construction method for fixing the cup member 12 to the terminal portion 8a of the residual cable 8, first, the through hole 14 provided in the bottom portion of the cup member 12 is provided with the sealing material 1 such as a foam material.
Block with 7. Next, the cable end portion 8a is provided by covering the cable end portion 8a with the cup member 12 from the outside or the inside of the jacket 7 so that the cable end portion 8a does not expand in the outer peripheral direction. Then, the adhesive is injected into the cable terminal portion 8a through the adhesive injection hole 16 provided in the bottom portion of the cup member 12. At this time, since the plurality of through holes 14 are closed by the sealing material 17, the adhesive after injection is prevented from leaking to the outside.
【００１９】残置ケーブルの端末部８ａ側に加圧注入さ
れた接着剤がケーブル端面８ｂとカップ部材１２の内底
面との間に生じた小さなクリヤランスを通ってケーブル
端面８ｂを行き渡り、端面８ｂよりさらにケーブル内部
へ浸入していく。The adhesive injected under pressure to the end portion 8a side of the remaining cable passes over the cable end surface 8b through a small clearance formed between the cable end surface 8b and the inner bottom surface of the cup member 12, and further extends beyond the end surface 8b. It penetrates into the inside of the cable.
【００２０】ここで用いられる接着剤は樹脂系接着剤で
あり、例えばエポキシ樹脂系接着剤、ビニル共重合樹脂
系接着剤、酢酸ビニル樹脂系接着剤などである。なお、
ここで用いられるシール材１７は発泡材が望ましく、例
えば発泡ウレタン、発泡ポリエチレン、発泡ポリスチレ
ン等である。The adhesive used here is a resin adhesive, for example, an epoxy resin adhesive, a vinyl copolymer resin adhesive, a vinyl acetate resin adhesive, or the like. In addition,
The sealing material 17 used here is preferably a foam material, for example, urethane foam, polyethylene foam, polystyrene foam, or the like.
【００２１】次いで、複数のピン材１５を接着剤注入孔
１６および複数の貫通孔１４を挿通してケーブルの端末
部８ａに打ち込み、カップ部材１２をピン材と接着剤の
相乗作用により残置ケーブルの端末部８ａに抜き止め固
着するので、把持手段１１の把持力を強化することがで
きる。ここで、ピン材１５の表面を粗面にしているの
で、ケーブルの端末部８ａに打ち込まれたピン材１５が
接着剤によりケーブル内に一層強固に止められるように
なる。Next, the plurality of pin members 15 are inserted into the adhesive injection holes 16 and the plurality of through holes 14 and driven into the terminal portion 8a of the cable, and the cup member 12 is synergistically acted on by the pin member and the adhesive to leave the remaining cable. Since it is fixed to the terminal portion 8a without being pulled out, the gripping force of the gripping means 11 can be strengthened. Here, since the surface of the pin material 15 is roughened, the pin material 15 driven into the terminal portion 8a of the cable can be more firmly fixed in the cable by the adhesive.
【００２２】そして図５に示すように、ピン材打ち込み
後の把持手段１１に、引抜き治具１９（連結用部材２０
とホルダ部材２１及びシャフト２２よりなる）を連結ボ
ルト１８により連結させることで、該把持手段１１を撤
去装置の引き抜き手段２３へ連結することができる。把
持手段１１を引抜き手段２３により引張ることで、管路
中の残置ケーブル８がその多大な重量等に抗して引き抜
かれて、確実に管路から撤去される。Then, as shown in FIG. 5, the pulling-out jig 19 (the connecting member 20
And the holder member 21 and the shaft 22) are connected by the connecting bolts 18, so that the gripping means 11 can be connected to the pulling-out means 23 of the removing device. By pulling the gripping means 11 by the pulling-out means 23, the residual cable 8 in the pipeline is pulled out against the great weight and the like, and is reliably removed from the pipeline.
【００２３】さらに本発明によれば、前記カップ部材１
２は、残置ケーブルの外被７に装着できる直径を有する
ものと、該ケーブルの外被と線材６との間に生じる環状
隙間に挟み込まれる直径を有するものと、二種類に分け
て作られている。通常は、上記した実施例のようにケー
ブルの外被面に装着できる直径を有するカップ部材を用
いるが、ケーブル端末部８ｂがダクト口４の内部に入っ
たままで余長がない場合、ケーブルの外被７と線材６と
の間に生じる環状隙間に挟み込まれる直径を有するカッ
プ部材を用いる。そうすると、比較的に小さい直径を有
するカップ部材によって、ケーブル端末部８ａの線材６
が外周方向に膨らまないように収納される。Further in accordance with the present invention, the cup member 1
2 is divided into two types, one having a diameter that can be mounted on the outer sheath 7 of the remaining cable, and the other having a diameter that is sandwiched in the annular gap formed between the outer sheath of the cable and the wire 6. There is. Normally, a cup member having a diameter that can be attached to the outer jacket surface of the cable is used as in the above-described embodiment, but when the cable end portion 8b remains inside the duct opening 4 and there is no extra length, the outer portion of the cable is A cup member having a diameter sandwiched in an annular gap formed between the object 7 and the wire 6 is used. Then, by the cup member having a relatively small diameter, the wire rod 6 of the cable terminal portion 8a is
Is stored so that it does not expand in the outer peripheral direction.
【００２４】[0024]
【発明の効果】本発明に係る工法では、撤去装置の把持
手段は、連結部を有し底部に接着剤注入孔および複数の
貫通孔を設けたカップ部材と、残置ケーブルの端末部に
打ち込まれる複数のピン材とを有するものであり、カッ
プ部材を残置ケーブル端末部に配設し、前記注入孔より
接着剤を残置ケーブルの端末部に注入し、その後、前記
複数のピン材を前記注入孔および前記複数の貫通孔を挿
通してケーブルの端末部に打ち込むことで、前記カップ
部材を残置ケーブルの端末部に結合させて、残置ケーブ
ルを管路から引き抜くことから、マンホール内の余長の
無い残置ケーブルの端末部を簡単な作業で強固に把持す
ることができる。打ち込まれたピン材と接着剤の相乗作
用により固着して残置ケーブル端末部を把持するので、
大きい引き抜き力をかけることができ、このため残置ケ
ーブルを確実に管路から引き抜いて撤去することができ
る。In the construction method according to the present invention, the gripping means of the removing device is driven into the cup member having the connecting portion and provided with the adhesive injection hole and the plurality of through holes in the bottom portion and the terminal portion of the residual cable. A plurality of pin members are provided, and a cup member is arranged at the end portion of the residual cable, an adhesive is injected from the injection hole into the end portion of the residual cable, and then the plurality of pin members are injected into the injection hole. And by inserting the plurality of through holes and driving it into the end portion of the cable, the cup member is coupled to the end portion of the residual cable, and the residual cable is pulled out from the conduit, so that there is no extra length in the manhole. The terminal portion of the residual cable can be firmly gripped by a simple operation. Since the pin material that has been driven in and the adhesive bond together due to the synergistic effect, and grip the remaining cable end,
A large pull-out force can be applied, which ensures that the residual cable can be pulled out of the line and removed.
【００２５】従って、本発明の工法を利用することによ
って、ダクト口を削孔しないで済むので、残置ケーブル
の引抜き作業が容易になり、残置ケーブルが撤去された
管路は新しいケーブルを敷設するなど直ちに再利用する
ことができるようになる。Therefore, by utilizing the construction method of the present invention, it is not necessary to drill the duct opening, so that the work of pulling out the residual cable is facilitated, and a new cable is laid in the pipeline from which the residual cable has been removed. It can be reused immediately.
【図１】 地下ケーブルの敷設構造を示す説明図であ
る。FIG. 1 is an explanatory diagram showing a laying structure of an underground cable.
【図２】 本発明の残置ケーブル撤去工法を示す説明図
である。FIG. 2 is an explanatory view showing a remaining cable removing method of the present invention.
【図３】 本発明の工法における一工程を示す断面図で
ある。FIG. 3 is a cross-sectional view showing one step in the construction method of the present invention.
【図４】 本発明の工法における一工程を示す断面図で
ある。FIG. 4 is a cross-sectional view showing one step in the construction method of the present invention.
【図５】 本発明の工法における一工程を示す断面図で
ある。FIG. 5 is a cross-sectional view showing one step in the construction method of the present invention.
１ 管路 ２ マンホール ４ ダクト口 ７ 外被 ８ 残置ケーブル ８ａ 端末部 １１ 把持手段 １２ カップ部材 １３ フランジ連結部 １４ 貫通孔 １５ ピン材 １６ 接着剤注入孔 １８ 連結ボルト １９ 引抜き治具 ２３ 引抜き手段 DESCRIPTION OF SYMBOLS 1 Pipeline 2 Manhole 4 Duct opening 7 Outer sheath 8 Remaining cable 8a Terminal part 11 Grip means 12 Cup member 13 Flange connection part 14 Through hole 15 Pin material 16 Adhesive injection hole 18 Connecting bolt 19 Extraction jig 23 Extraction means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 結城 勇 神奈川県大和市代官３丁目18番３号 株式 会社ハッコー技術開発センター内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isamu Yuuki 3-18-3 Daikan, Yamato-shi, Kanagawa Inside the Hakko Technology Development Center, Inc.
Claims (4)
て放置されている残置ケーブルに対し、該残置ケーブル
の端末部に把持手段を固定し撤去装置本体に連結してケ
ーブルを管路から引き抜く撤去工法において、 前記把持手段は、連結部を有し底部に接着剤注入孔およ
び複数の貫通孔を設けたカップ部材と、残置ケーブルの
端末部に打ち込まれる複数のピン材とを有し、 前記カップ部材を残置ケーブル端末部に配設し、前記注
入孔より接着剤を残置ケーブルの端末部に注入し、その
後、前記複数のピン材を前記注入孔および前記複数の貫
通孔を挿通してケーブルの端末部に打ち込むことで、前
記カップ部材を残置ケーブルの端末部に結合させて、前
記連結部を撤去装置に連結して残置ケーブルを管路から
引き抜くことを特徴とする残置ケーブル撤去工法。1. With respect to a residual cable that has been cut and left in a pipeline communicating with a manhole, a gripping means is fixed to a terminal portion of the residual cable, and the cable is pulled out from the pipeline by connecting to a main body of the removal device. In the removal method, the gripping means includes a cup member having a connecting portion and provided with an adhesive injection hole and a plurality of through holes in the bottom portion, and a plurality of pin members that are driven into the terminal portion of the remaining cable, A cup member is disposed at the end portion of the residual cable, and an adhesive is injected into the end portion of the residual cable through the injection hole, and then the plurality of pin members are inserted through the injection hole and the plurality of through holes to form a cable. The remaining case is characterized in that the cup member is coupled to the end portion of the residual cable by driving the terminal portion of the residual cable, the connecting portion is connected to the removal device, and the residual cable is pulled out from the conduit. Le removal method.
着剤が外側へ洩れないように前記複数の貫通孔をシール
材で塞いでおくことを特徴とする請求項１記載の残置ケ
ーブル撤去工法。2. The residual cable according to claim 1, wherein prior to the injection of the adhesive, the plurality of through holes are closed with a sealing material so that the injected adhesive does not leak outside. Removal method.
線材との間に生じる環状隙間に挟み込まれる直径を有す
ることを特徴とする請求項１記載の残置ケーブル撤去工
法。3. The method for removing a residual cable according to claim 1, wherein the cup member has a diameter that is sandwiched in an annular gap formed between the outer jacket of the cable and the wire.
を特徴とする請求項１記載の残置ケーブル撤去工法。4. The residual cable removing method according to claim 1, wherein the surface of the pin material is formed to be a rough surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3380596A JP3591965B2 (en) | 1996-02-21 | 1996-02-21 | Remaining cable removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3380596A JP3591965B2 (en) | 1996-02-21 | 1996-02-21 | Remaining cable removal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09233634A true JPH09233634A (en) | 1997-09-05 |
| JP3591965B2 JP3591965B2 (en) | 2004-11-24 |
Family
ID=12396704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3380596A Expired - Lifetime JP3591965B2 (en) | 1996-02-21 | 1996-02-21 | Remaining cable removal method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3591965B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007060766A (en) * | 2005-08-23 | 2007-03-08 | Nobuyuki Yahiro | Coupling structure between tip face of left cable and extracting jig |
-
1996
- 1996-02-21 JP JP3380596A patent/JP3591965B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007060766A (en) * | 2005-08-23 | 2007-03-08 | Nobuyuki Yahiro | Coupling structure between tip face of left cable and extracting jig |
| JP4548665B2 (en) * | 2005-08-23 | 2010-09-22 | 二幸削進工業株式会社 | Residual cable pulling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3591965B2 (en) | 2004-11-24 |
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