JPS60234408A - Method of inserting cable into conduit - Google Patents
Method of inserting cable into conduitInfo
- Publication number
- JPS60234408A JPS60234408A JP59088808A JP8880884A JPS60234408A JP S60234408 A JPS60234408 A JP S60234408A JP 59088808 A JP59088808 A JP 59088808A JP 8880884 A JP8880884 A JP 8880884A JP S60234408 A JPS60234408 A JP S60234408A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- manhole
- tension
- conduit
- fishing wheel
- 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
Landscapes
- Electric Cable Installation (AREA)
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】
本発明はケーブルの管路引入方法の改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for introducing a cable into a conduit.
地中ケーブル管路にケーブルを引入れる場合、第２図に
示すように、ケーブル引出側マンホールＭ′のマンホー
ル内前面１′に釣車２′を取付け、ケーブル牽引ワイヤ
ー３′をこの釣車２′を経てウィンチにより牽引してい
る。このケーブルの引入れにおいては、ケーブルの引入
れ張力を監視しながら、ケーブル牽引ワイヤー３′を牽
引することが必要であシ、このケーブル引入れ張力の測
定を行うために、第２図に示すように油圧式張力計の油
圧シリンダー４１’を介して釣車２′を取付け、この油
圧シリンダー４１’とマンホール外の張力指示器４２′
とを高圧ホース４３′で連結することが公知である。When pulling a cable into an underground cable conduit, as shown in FIG. ' and is towed by a winch. In pulling in this cable, it is necessary to pull the cable pulling wire 3' while monitoring the cable pulling tension. As shown, the fishing wheel 2' is attached via the hydraulic cylinder 41' of the hydraulic tension gauge, and the tension indicator 42' outside the manhole is connected to the hydraulic cylinder 41'.
It is known to connect the two with a high pressure hose 43'.
しかしながら、ケーブル引入れ張力は引入れ初期の零値
からケーブル引入れ終了時の最大値にまで変化していき
、この変化を油圧シリンダーのピストンロンドの摺動に
伴う油圧変化で指示していく油圧式張力計のその油圧シ
リンダーの長さは相当に長尺となり、ケーブル引入れ終
了時（スイベルが釣車に達した時）におけるケーブル引
入れ長さは、油圧シリンダー不使用の場合に較べて油圧
シリンダーの長さだけ減少することになる。而るに、大
サイズケーブルになるとその最大引入れ張力が犬となる
だめに、上記油圧式張力計の油圧シリンダーにも寸法の
大きなものを使用しなければならず、上記ケーブル引入
れ長さの減少分も大となって、ケーブルの接続に支障を
きたすことがある。However, the cable pull-in tension changes from zero value at the beginning of cable pull-in to the maximum value at the end of cable pull-in, and this change is indicated by the hydraulic pressure change accompanying the sliding of the piston rod of the hydraulic cylinder. The length of the hydraulic cylinder of the type tension meter is quite long, and the length of the cable at the end of the cable pull-in (when the swivel reaches the fishing wheel) is longer than the hydraulic cylinder when the hydraulic cylinder is not used. It will be reduced by the length of the cylinder. However, since the maximum pull-in tension of a large-sized cable increases, it is necessary to use a large hydraulic cylinder for the above-mentioned hydraulic tension meter, and the above-mentioned cable draw-in length The decrease may also be large enough to cause problems with cable connections.
この不都合を回避するため、従来においては、スイベル
が釣車に到達乃至は近接したときに、・油圧シリンダー
を取外し、釣車を油圧シリンダーを介さずに再取付けし
、この状態でスイベルが釣車に到達するまでケーブルの
再引入れを行うようにしている。しかしながら、この方
法では再引入れが必要でアシ、作業能率上不利であるば
かりか、再引入れ中においては、ケーブル引入れ張力を
監視°し得す、ケーブル許容引入れ張力以上でのケーブ
ル引入れが進行するのを確実に排除し難く、作業上危険
である。In order to avoid this inconvenience, conventionally, when the swivel reaches or approaches the fishing wheel, the hydraulic cylinder is removed and the fishing wheel is reattached without using the hydraulic cylinder. I am trying to re-introduce the cable until this point is reached. However, this method not only requires re-pulling, which is disadvantageous in terms of work efficiency, but also requires monitoring the cable pulling-in tension during re-pulling. It is difficult to reliably prevent this from progressing, and it is dangerous for work.
本発明に係るケーブルの管路引入方法は、ケーブル引入
れ張力を常時、監視しつつ、再引入れによることなく、
ケーブルを完全に引入れ得る方法であり、ケーブル引入
れにおけるケーブル引出側マンホールにおいて、マンホ
ール内前面に第１釣車を取付け、マンホール内後面に張
力計を介して第２釣車を取付け、ケーブル牽引ワイヤー
を第１釣車並びに第２釣車を順次に通過させて牽引する
ことを特徴とする方法である。The cable conduit drawing method according to the present invention constantly monitors the cable drawing tension without re-drawing the cable.
This is a method that allows the cable to be pulled in completely.In the manhole on the cable pull-out side when pulling in the cable, a first fishing wheel is installed on the front inside the manhole, a second fishing wheel is installed on the back inside the manhole via a tension gauge, and the cable is pulled in. This method is characterized in that the wire is pulled by passing through a first fishing wheel and a second fishing wheel in sequence.
以下、図面により本発明を説明する。The present invention will be explained below with reference to the drawings.
第１図において、Ｄはケーブル管路、Ｍはケーブル引出
側マンホールである。ｌａは第１釣車でアシ、マンホー
ル内の前面２ａにフック３ａによって取付けである。１
ｂは第２釣車であり、張力計の油圧シリンダー３１を介
してマンホール内の後面２ｂに取付けである。４は第２
釣車ｌｂを所定位置（マンホールの出入口直下）に配置
するだめの取付ワイヤーである。３２は張力計の張力指
示器であり、上記の油圧シリンダー３１に高圧ホース３
３により連通しである。In FIG. 1, D is a cable conduit, and M is a manhole on the cable extraction side. La is the first fishing wheel and is attached to the front face 2a inside the manhole with a hook 3a. 1
b is a second fishing wheel, which is attached to the rear surface 2b inside the manhole via the hydraulic cylinder 31 of the tension meter. 4 is the second
This is a mounting wire for placing the fishing wheel lb in a predetermined position (directly below the manhole entrance/exit). 32 is a tension indicator of a tension meter, and a high pressure hose 3 is connected to the above-mentioned hydraulic cylinder 31.
3 is continuous.
Ｗはケーブル、ｐはプーリングアイ、Ｓはスイベル、ｔ
はケーブル牽引ワイヤーであり、ケーブルの引入れを行
うには、ウィンチＦによりケーブル牽引ワイヤーｔを牽
引し、ケーブル引入れ張力を張力指示器３２で測定し、
ケーブル引入れ張力を監視しつつケーブルを引入れてぃ
く。W is cable, p is pulling eye, S is swivel, t
is a cable pulling wire, and in order to pull in the cable, pull the cable pulling wire t with a winch F, measure the cable pulling tension with a tension indicator 32,
Pull in the cable while monitoring the cable pull-in tension.
ケーブルの引入れは、スイベルＳが第１釣車ｌａに到達
するまで行うことができ、この第１釣車ユａは張力計を
介さずにマンホール内前′面２ａに取付けてあり、その
マンホール内前面２ａに充分に近接しているから、ケー
ブル先端をマンホール内前面に充分に近接させてケーブ
ルの引入れを行うことができる。The cable can be pulled in until the swivel S reaches the first fishing wheel la, which is attached to the front face 2a inside the manhole without using a tension gauge, and Since it is sufficiently close to the inner front surface 2a, the cable can be drawn in with the cable tip sufficiently close to the inner front surface of the manhole.
上述した通り、本発明に係るケーブルの管路引入れ方法
によれば、ケーブルを一度の引入れで、ケーブル引入れ
張力を監視しつつ引入れ不足なしに、ケーブルを管路内
に能率よく、かつ安全に引き入れることができる。As described above, according to the method of leading a cable into a conduit according to the present invention, the cable can be efficiently brought into the conduit by one time, without insufficient pulling while monitoring the cable pulling tension. and can be brought in safely.
第１図は本発明に係るケーブルの管路引入方法を示す説
明図、第２図はケーブルの従来の管路引入方法を示す説
明図である。
図において、Ｍはケーブル引出側マンホール、ｌａは第
１釣車、２ａはマンホール内前面、ｌｂは第２釣車、２
ｂはマンホール内後面、３１は張力計、ｔはケーブル牽
引ワイヤーである。
ｌ
γ１ｆＪFIG. 1 is an explanatory diagram showing a method for introducing a cable into a conduit according to the present invention, and FIG. 2 is an explanatory diagram showing a conventional method for introducing a cable into a conduit. In the figure, M is the cable pull-out side manhole, la is the first fishing wheel, 2a is the front inside the manhole, lb is the second fishing wheel, 2
b is the inner rear surface of the manhole, 31 is a tension meter, and t is a cable pulling wire. l γ1fJ
Claims (1)
いて、マンホール内前面に第１釣車を取付け、マンホー
ル内後面に張力計を介して第２釣車を取付け、ケーブル
牽引ワイヤーを第１釣車並びに第２釣車を１貝次に通過
させて牽引することを特徴とするケーブルの管路引入方
法。In the cable pull-out side manhole for cable entry, a first fishing wheel is attached to the front inside the manhole, a second fishing wheel is installed to the rear inside the manhole via a tension gauge, and the cable pulling wire is connected to the first fishing wheel and the second fishing wheel. A method for introducing a cable into a conduit, which is characterized in that the cable is passed through one shell and then towed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59088808A JPS60234408A (en) | 1984-05-01 | 1984-05-01 | Method of inserting cable into conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59088808A JPS60234408A (en) | 1984-05-01 | 1984-05-01 | Method of inserting cable into conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60234408A true JPS60234408A (en) | 1985-11-21 |
Family
ID=13953182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59088808A Pending JPS60234408A (en) | 1984-05-01 | 1984-05-01 | Method of inserting cable into conduit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60234408A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7177537B1 (en) * | 2021-09-30 | 2022-11-24 | 五十嵐工業株式会社 | How to remove underground ultra-high voltage transmission cables |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5021112U (en) * | 1973-06-19 | 1975-03-10 | ||
| JPS5444784U (en) * | 1977-09-02 | 1979-03-28 |
-
1984
- 1984-05-01 JP JP59088808A patent/JPS60234408A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5021112U (en) * | 1973-06-19 | 1975-03-10 | ||
| JPS5444784U (en) * | 1977-09-02 | 1979-03-28 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7177537B1 (en) * | 2021-09-30 | 2022-11-24 | 五十嵐工業株式会社 | How to remove underground ultra-high voltage transmission cables |
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