JPS627327A - Prevension of cable movement - Google Patents
Prevension of cable movementInfo
- Publication number
- JPS627327A JPS627327A JP60143186A JP14318685A JPS627327A JP S627327 A JPS627327 A JP S627327A JP 60143186 A JP60143186 A JP 60143186A JP 14318685 A JP14318685 A JP 14318685A JP S627327 A JPS627327 A JP S627327A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- conduit
- bag
- force
- prevension
- 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
- 238000000034 method Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000008602 contraction Effects 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000006903 response to temperature Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (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】
〔発明の技術分野〕
本発明は、ケーブルの拘束力を自由に調整できかつケー
ブルの撤去を容易に行ないうるケーブルの移動防止方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for preventing movement of a cable, which allows the restraining force of a cable to be freely adjusted and the cable to be easily removed.
（背景技術の問題点）
一般に管路等に布設されたケーブルは、負荷変動および
季節変化に伴う温度変化を受けて熱伸縮を行っている。(Problems with Background Art) Cables installed in conduits and the like generally undergo thermal expansion and contraction in response to temperature changes associated with load fluctuations and seasonal changes.
このケーブルの熱伸縮を吸収したり不都合な移動を防ぐ
方法として、従来より
（イ）オフセットを設ける
（口）スネーク布設を行う
（ハ）クリートあるいはクランプ等を用いてケーブルの
所定個所を固定する
〈二）管路口にモルタルや発泡ウレタン樹脂等の充填剤
を詰める
等の方法が知られている。As a method to absorb this thermal expansion and contraction of the cable and to prevent it from moving undesirably, conventional methods include (a) providing an offset, (c) snake installation, and (c) fixing the cable at a predetermined location using cleats, clamps, etc. 2) Methods such as filling the pipe opening with filler such as mortar or foamed urethane resin are known.
ところで道路下の管路中にケーブルが布設された場合に
は、路上を走る車の進行方向にケーブルをしごくような
力が作用し、このため熱伸縮による移動に加え、車の進
行方向にもケーブルが移動するという現象が生じる。By the way, when a cable is laid in a conduit under a road, a force that squeezes the cable is applied in the direction of travel of a car running on the road, and as a result, in addition to movement due to thermal expansion and contraction, it is also compressed in the direction of travel of the car. A phenomenon occurs in which the cable moves.
この現象は、第２図にその概略を示すように、その形態
から波乗り現象と呼ばれている。波乗り現象によるケー
ブルの移動は、熱伸縮による移動の場合とは異なり、ケ
ーブルの部位により不均一に行なわれる。This phenomenon is called wave riding phenomenon because of its form, as shown schematically in FIG. Cable movement due to the wave-riding phenomenon is different from movement due to thermal expansion and contraction, and occurs unevenly depending on the part of the cable.
すなわち、管路１の車の進行方向の下流側Ｂには、前述
したしごき力Ｆが作用して局部的にケーブル２の撚りの
′わらい２ａが生じる。この結果、下流側Ｂにおいてケ
ーブル２をクリート３ｂで固定するために要する拘束力
は小さくて済むが、反対に車の進行方向の上流側Ａにお
いては、ケーブル２の移動を妨げるためにしごぎ力Ｆに
抗する大ぎい拘束力が必要となる。特にＣＶＴケーブル
においては剛性が低いこともあって、必要とされる拘束
力は約８００ｋｇにもなることが実測されている。That is, the above-mentioned straining force F acts on the downstream side B of the conduit 1 in the traveling direction of the vehicle, causing local untwisting 2a of the cable 2. As a result, the restraining force required to fix the cable 2 with the cleat 3b on the downstream side B is small, but on the other hand, on the upstream side A in the direction of travel of the car, the straining force is applied to prevent the movement of the cable 2. A large restraining force is required to resist F. Particularly in CVT cables, the required restraint force has been actually measured to be as much as about 800 kg, partly because of their low rigidity.
したがって従来の（イ）の方法では、このように大きい
伸縮力を吸収してケーブルを固定することは難しく、オ
フセット部に異常変形を起こしたり接続部に無理な力が
加わって絶縁破壊を起こすおそれがある。また（口）の
方法では管路的布設には適用することができない。ざら
に（ハ）の方法ではケーブルの絶縁体保護のためクリー
トの締付は面圧に限度があって、クリートを用いて波乗
り現象による移動を防止することは難しく、さらにこの
方法ではクリート締付は部の寸法を長くすれば必要な拘
束力を得ることも可能ではあるが、装置が非常に大型化
してしまうという問題がある。Therefore, with the conventional method (a), it is difficult to absorb such a large stretching force and fix the cable, and there is a risk of abnormal deformation of the offset part or excessive force being applied to the connection part, causing dielectric breakdown. There is. Furthermore, the method mentioned above cannot be applied to conduit installation. In the Zarani (c) method, there is a limit to the surface pressure when tightening the cleat to protect the cable insulation, and it is difficult to use the cleat to prevent movement due to wave riding. Although it is possible to obtain the necessary restraining force by increasing the size of the part, there is a problem in that the device becomes extremely large.
さらにまた（二）の方法では、使用するモルタルや発泡
ウレタン樹脂は充填後完全に固体になるため、ケーブル
撤去の場合を考慮すると管路口から手が届く範囲までし
か充填することができず、また熱伝導率が低いので局所
的なホットスポットになるおそれがあった。Furthermore, in method (2), the mortar and foamed urethane resin used become completely solid after filling, so in consideration of cable removal, it is only possible to fill within reach from the pipe opening; Because of its low thermal conductivity, there was a risk of localized hot spots.
本発明は、このような従来のケーブル布設方法の欠点を
解消するためになされたもので、波乗り現象による移動
を防止することが可能なケーブルの移動防止方法を提供
することを目的とする。The present invention was made in order to eliminate the drawbacks of the conventional cable installation method, and an object of the present invention is to provide a cable movement prevention method that can prevent cable movement due to wave riding phenomenon.
すなわち本発明のケーブルの移動防止方法は、管路とケ
ーブル間に挿入された袋体を膨張させてこの袋体と管路
内壁およびケーブル外表面との摩擦力によりケーブルの
移動を防止することにより、従来の難点を解消したもの
である。That is, the cable movement prevention method of the present invention inflates a bag inserted between a conduit and a cable, and prevents the cable from moving due to the frictional force between the bag, the inner wall of the conduit, and the outer surface of the cable. , which solves the problems of the conventional method.
以下、本発明を一実施例の図面に基づいて説明する。第
１図において、管路（４）内には例えば１条の電カケー
プル（５）が布設されており、管路（４）とケーブル（
５）間の空隙部（Ｇ）にはゴム状弾性材料等より成る袋
体（６）が挿入されている。しかして、この袋体（６）
は、水や空気等の流体（７）の封入により膨張され、こ
れによって袋体（６）が管路（４）内壁とケーブル（５
）外表面とに押圧されることになる。袋体（６）は管路
（４）の少なくとも片端部に配設されるが、全長にわた
って配設してもよく、また袋体の外表面にエンボス処理
を施してもよい。エンボス処理を施した場合には、侵述
するように管路（４）内壁もしくはケーブル（５）外表
面との摩擦力を高めうる利点がある。Hereinafter, the present invention will be explained based on the drawings of one embodiment. In Fig. 1, for example, one electric cable (5) is installed inside the conduit (4), and the conduit (4) and the cable (
5) A bag body (6) made of a rubber-like elastic material or the like is inserted into the gap (G) between the two. However, this bag (6)
is expanded by filling a fluid (7) such as water or air, which causes the bag body (6) to connect with the inner wall of the conduit (4) and the cable (5).
) will be pressed against the outer surface. The bag (6) is disposed at at least one end of the conduit (4), but may be disposed over the entire length, and the outer surface of the bag may be embossed. Embossing has the advantage of increasing the frictional force with the inner wall of the conduit (4) or the outer surface of the cable (5), as mentioned above.
なお、袋体（６）としては、長さ方向の伸びが少なく、
後方向の伸びが大きくなるようなものを使用することが
望ましい。In addition, the bag (6) has little elongation in the length direction,
It is desirable to use something that has a large amount of elongation in the rear direction.
以上の実施例は本発明を管路布設ケーブルに適用した例
であるが、本発明はかかる実施例に限定されるべきもの
ではなく、橋梁添架布設ケーブルあるいはトラフ布設ケ
ーブル等にも同様に適用可能である。Although the above embodiments are examples in which the present invention is applied to cables installed in conduits, the present invention should not be limited to such embodiments, and can be similarly applied to cables installed along bridges, cables installed in troughs, etc. It is.
以上述べたように本発明においては、膨張された袋体が
管路内壁とケーブル外表面とに押圧されるのですなわち
、袋体と管路内壁およびケーブル外表面とに摩擦力が作
用しているのでこれによってケーブルを拘束することが
できる。なお、本発明においてはケーブルの拘束力の調
整は、袋体の長さおよび流体の封入圧力の調整により容
易になし得、またケーブルを撤去する必要が生じた場合
は、袋体内の流体を抜くことにより簡単にケーブルを弓
口友くことができる。As described above, in the present invention, since the inflated bag body is pressed against the inner wall of the conduit and the outer surface of the cable, a frictional force acts between the bag body, the inner wall of the conduit, and the outer surface of the cable. This allows the cable to be restrained. In addition, in the present invention, the binding force of the cable can be easily adjusted by adjusting the length of the bag body and the fluid sealing pressure, and if it becomes necessary to remove the cable, the fluid in the bag body can be drained. This allows you to easily connect the cable to the bow.
第１図は本発明の実施状況を示す説明図、第２図はケー
ブルの波乗り現象を説明する概略図である。
４、、、、、、、管路
５、、、、、、、ケーブル
６、、、、、、、袋体
７、、、、’、、、流体FIG. 1 is an explanatory diagram showing the state of implementation of the present invention, and FIG. 2 is a schematic diagram illustrating the wave-riding phenomenon of a cable. 4. Pipe line 5. Cable 6. Bag body 7. Fluid
Claims (1)
挿入された袋体が流体の注入によって膨張され、膨張さ
れた袋体とケーブルおよび管路内壁との摩擦力でケーブ
ルの移動を防止することを特徴とするケーブルの移動防
止方法。A bag inserted into the gap between the conduit and the cable installed in the conduit is inflated by fluid injection, and the cable moves due to the frictional force between the inflated bag, the cable, and the inner wall of the conduit. A cable movement prevention method characterized by preventing cable movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60143186A JPS627327A (en) | 1985-06-28 | 1985-06-28 | Prevension of cable movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60143186A JPS627327A (en) | 1985-06-28 | 1985-06-28 | Prevension of cable movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS627327A true JPS627327A (en) | 1987-01-14 |
Family
ID=15332875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60143186A Pending JPS627327A (en) | 1985-06-28 | 1985-06-28 | Prevension of cable movement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS627327A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0546315U (en) * | 1991-11-30 | 1993-06-22 | 株式会社イトーキクレビオ | Joint processing structure between panel and desk top |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4522441Y1 (en) * | 1968-04-20 | 1970-09-05 | ||
| JPS5373394A (en) * | 1976-12-10 | 1978-06-29 | Daikiyou Kagaku Kk | Method of bloking flow of water in gap between tube and cable inserted therein |
-
1985
- 1985-06-28 JP JP60143186A patent/JPS627327A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4522441Y1 (en) * | 1968-04-20 | 1970-09-05 | ||
| JPS5373394A (en) * | 1976-12-10 | 1978-06-29 | Daikiyou Kagaku Kk | Method of bloking flow of water in gap between tube and cable inserted therein |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0546315U (en) * | 1991-11-30 | 1993-06-22 | 株式会社イトーキクレビオ | Joint processing structure between panel and desk top |
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