JPH0694918B2 - Temporary gas pipe protection method - Google Patents
Temporary gas pipe protection methodInfo
- Publication number
- JPH0694918B2 JPH0694918B2 JP1083840A JP8384089A JPH0694918B2 JP H0694918 B2 JPH0694918 B2 JP H0694918B2 JP 1083840 A JP1083840 A JP 1083840A JP 8384089 A JP8384089 A JP 8384089A JP H0694918 B2 JPH0694918 B2 JP H0694918B2
- Authority
- JP
- Japan
- Prior art keywords
- gas pipe
- split
- dovetail
- dovetail groove
- pipe
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、仮設ガス管の保護方法に関する。TECHNICAL FIELD The present invention relates to a method for protecting a temporary gas pipe.
従来の仮設ガス管は露出していた。このため、取替え工
事等の機材がそのガス管に当ったりすると、ガス管が破
損し、大事故につながる恐れがあった。The conventional temporary gas pipe was exposed. Therefore, if equipment such as replacement work hits the gas pipe, the gas pipe may be damaged, leading to a serious accident.
本発明は、以上の点に鑑み、上記恐れをなくすことを課
題とする。In view of the above points, the present invention aims to eliminate the above fear.
上記課題を解決するために、本発明にあっては、ガス管
を仮設するに際し、プラスチック管を、円形断面として
その長さ方向の面で二分割し、一方の分割筒の断面円弧
中心角を180度を越えて240度以下とし、その一方の分割
筒の両分割縁内面全長に亘って蟻溝又は蟻ほぞを形成す
るとともに、他方の分割筒の両分割縁外面全長に亘って
前記一方の分割筒の蟻溝又は蟻ほぞに嵌合する蟻ほぞ又
は蟻溝を形成したものとし、分割筒の一方に前記仮設ガ
ス管を入れた後、他方を被せて前記蟻溝と蟻ほぞの嵌合
を介して一体に結合し、そのプラスチック管を仮設ガス
管所要長さに亘って被せる構成としたのである。In order to solve the above-mentioned problems, in the present invention, when temporarily installing a gas pipe, a plastic pipe is divided into two parts in a plane in the longitudinal direction as a circular cross section, and the sectional arc center angle of one of the divided cylinders is Over 180 degrees and 240 degrees or less, forming a dovetail groove or dovetail over the entire length of both split edge inner surfaces of one of the split cylinders, and at the same time over the full length of both split edge outer surfaces of the other split cylinder. A dovetail or dovetail that fits into the dovetail or dovetail of the split tube is formed, and after inserting the temporary gas pipe into one of the split tubes, cover the other and fit the dovetail and dovetail The plastic pipe is covered over the required length of the temporary gas pipe.
上記分割筒の断面円弧中心角を180度を越えて240度以下
としたのは、180度以下であると、両分割筒に撓み差が
生じず、240度を越えると、他方のものの中心角は小さ
くなりすぎて結合力が小さくなるからであり、その角度
は、管径とその厚み等を考慮して適宜に選定する。The cross-sectional arc center angle of the above-mentioned split cylinder is set to exceed 180 degrees and 240 degrees or less.If it is 180 degrees or less, there is no difference in bending between the split cylinders, and if it exceeds 240 degrees, the center angle of the other one. Is too small to reduce the binding force, and the angle is appropriately selected in consideration of the pipe diameter, its thickness, and the like.
上記所要長さは、露出する部分全長に亘ることが好まし
いが、機材が当る個所のみでもよく、それらを考慮して
適宜に決定する。It is preferable that the required length extends over the entire exposed portion, but the required length may be only a portion where the equipment hits, and is appropriately determined in consideration of them.
このように構成される本発明に係る仮設ガス管の保護方
法は、分割筒の一方にガス管を入れて他方を嵌める。こ
の嵌合は、蟻溝・蟻ほぞが、一方の分割筒は分割縁内面
に、他方は分割縁外面に形成されているため、一方の分
割縁が他方の分割縁に被さった状態となる。In the method for protecting a temporary gas pipe according to the present invention having such a configuration, the gas pipe is inserted into one of the split tubes and the other is fitted. In this fitting, the dovetail groove and the dovetail are formed such that one of the divided cylinders is formed on the inner surface of the divided edge and the other is formed on the outer surface of the divided edge, so that one divided edge covers the other divided edge.
したがって、管に内向きの外力が加わると、その断面円
弧中心角が180度を越え、他方の分割筒に比べて撓み易
いため、内方に大きく撓もうとするが、他方の分割筒は
それほど撓もうとせず、このため、蟻溝と蟻ほぞの嵌合
はより強固なものとなる。Therefore, when an inward external force is applied to the pipe, the center angle of the arc of the cross section exceeds 180 degrees, and it tends to bend compared to the other split cylinder, so it tries to bend largely inward, but the other split cylinder is not so much. It does not tend to flex, which makes the dovetail and dovetail fit more firmly.
因みに、蟻溝・蟻ほぞが、一方の分割筒は分割縁内面
に、他方の内面に形成されておれば、内向きの外力が加
わると、嵌合を甘くするように分割筒は撓む。By the way, if the dovetail groove and the dovetail are formed on the inner surface of the dividing edge on one side and on the inner surface of the other side, the dividing tube bends so as to loosen the fitting when an inward external force is applied.
上記被覆は、ガス管の仮設前又は仮設後のいずれでもよ
い。The coating may be performed before or after the gas pipe is temporarily installed.
まず、プラスチックス管Ａについて説明すると、第２図
及び第３図に示すように、この管Ａは、断面円弧中心角
θ1:210度、厚さt:4mmの分割筒1aと、断面円弧中心角θ
2:150度、厚さt:4mmの分割筒1bとからなり、前者の分割
筒1aの分割縁内面にその全長に亘って蟻溝2aが形成さ
れ、後者の分割筒1bの分割縁外面にはその全長に亘って
蟻2bが形成されており、これらは、硬質塩化ビニルに
より所要長さに押出成形される。この長さは、運搬し易
さ等を考慮して適宜に決定する。First, the plastics pipe A will be described. As shown in FIGS. 2 and 3, this pipe A has a sectional cylinder 1a with a central angle θ 1 : 210 degrees and a thickness t: 4 mm, and a sectional circular arc 1 a. Central angle θ
2 : 150 degrees, consisting of a divided cylinder 1b of thickness t: 4 mm, a dovetail groove 2a is formed over the entire length on the inner surface of the divided edge of the former divided cylinder 1a, and on the outer surface of the divided edge of the latter divided cylinder 1b. The dovetail 2b is formed over its entire length, and these are extruded to the required length with hard vinyl chloride. This length is appropriately determined in consideration of ease of transportation and the like.
前記蟻溝2aと蟻2bは、前者2aを分割筒1bに後者2bを分
割筒1aに形成するようにしてもよく、また、両者1a、1b
に一方づつ形成するようにしてもよい。The dovetail groove 2a and the dovetail 2b may be formed by forming the former 2a into the divided cylinder 1b and the latter 2b into the divided cylinder 1a, or both 1a and 1b.
Alternatively, they may be formed one by one.
つぎに、このプラスチックス管Ａを仮設ガス管ａに被覆
する作業を説明すると、道路Ｒ等に矢板ｂで補強された
掘削溝Ｑが形成され、この溝Ｑに配設された幹線Ｐから
ユーザー宅Ｈに仮設ガス管ａが付設される。このガス管
ａに前記プラスチックス管Ａを被せるが、その作業は、
ガス管ａの付設前、付設後どちらでもよい。Next, the work of covering the plastic gas pipe A with the temporary gas pipe a will be described. A digging groove Q reinforced by a sheet pile b is formed on a road R or the like, and a trunk line P arranged in the groove Q allows a user to make a cut. A temporary gas pipe a is attached to the house H. The gas pipe a is covered with the plastics pipe A.
It may be either before or after the gas pipe a is attached.
その被覆作業は、まず、ガス管ａを、一方の分割筒1a又
は1bに入れた後、両分割筒1a、1bを千鳥足状にその端部
が重ならないように嵌合一体化する。両端1a′、1b′は
適宜の長さに切断して使用する。例えば２分の１モジュ
ールとする。In the covering operation, first, the gas pipe a is put into one of the divided cylinders 1a or 1b, and then the divided cylinders 1a and 1b are staggeredly fitted and integrated so that their ends do not overlap. Both ends 1a 'and 1b' are cut to an appropriate length before use. For example, one half module is used.
このとき、ガス管ａの屈曲部にはエルボＢを被せるとよ
い。このエルボＢも二分割できるものとするとよい。例
えば、第４図（ａ），（ｂ）に示すように、半割り筒3
a、3bの外周所要位置に、ほぞ4aとほぞ穴4bを設けて、
両者4a、4bを嵌め合うことにより、両筒3a、3bを結合し
てエルボＢとすることができる。また第６図（ａ）に示
すように、断面形状がＵ字状の凹入部5aとＩ字状の挿入
部5bを連設した硬質塩化ビニルからなる条５を螺旋巻き
しながら、第５図に示すように、凹入部5aに挿入部5bを
嵌入したものとしたり、条５を螺旋巻きとせず、第６図
（ｂ）に示すように円環状とし、その環を軸方向に連続
して嵌め込んだものとして可撓性を有るようにすれば任
意の屈曲度合に対応できる。At this time, it is preferable to cover the bent portion of the gas pipe a with the elbow B. It is preferable that the elbow B can also be divided into two. For example, as shown in FIGS. 4 (a) and 4 (b), the half-split cylinder 3
Provide a mortise 4a and a mortise hole 4b at the required outer circumferences of a and 3b,
By fitting the two cylinders 4a and 4b together, the two cylinders 3a and 3b can be combined to form the elbow B. Further, as shown in FIG. 6 (a), while spirally winding a strip 5 made of hard vinyl chloride in which a concave portion 5a having a U-shaped cross section and an insertion portion 5b having an I-shape are connected in series, As shown in FIG. 6, the insertion portion 5b is fitted in the recessed portion 5a, or the strip 5 is not spirally wound, but is formed into an annular shape as shown in FIG. 6 (b), and the ring is continuous in the axial direction. If it is made to have flexibility, it can cope with any degree of bending.
なお、仮設状態が終れば（工事が終了すれば）、プラス
チックス管Ａを前述の作用の逆を行って外す。When the temporary construction is over (when the construction is over), the plastics pipe A is removed by performing the reverse operation.
本発明は、以上のように構成したので、プラスチックス
管を容易にガス管に被覆することができ、仮設ガス管の
損傷を防止できる。また、ガス管を取外す場合にはその
被覆を容易に外し得る。Since the present invention is configured as described above, the gas pipe can be easily covered with the plastics pipe, and damage to the temporary gas pipe can be prevented. Further, when removing the gas pipe, the coating can be easily removed.
さらに、両分割筒の嵌合は、蟻溝・蟻が、一方の分割
筒は分割縁内面に、他方の分割筒には分割縁外面に形成
されているため、一方の分割縁が他方の分割縁に被さっ
た状態となる。このため、管に内向きの外力が加わる
と、一方の分割筒は、その断面円弧中心角が180度を越
えるものであって、他方の分割筒に比べて撓み易いた
め、内方に大きく撓もうとするが、他方の分割筒はそれ
ほど撓もうとせず、蟻溝と蟻の嵌合はより強固なもの
となり、ガス管被覆に支障が生じ難い。Furthermore, since the two split cylinders are fitted with a dovetail groove / dove, one split cylinder is formed on the inner surface of the split edge, and the other split cylinder is formed on the outer surface of the split edge, so that one split edge is divided into the other It is in a state of covering the edges. Therefore, when an inward external force is applied to the pipe, one of the split cylinders has a cross-section arc center angle of more than 180 degrees and is more easily bent than the other split cylinder. However, the other split cylinder does not tend to bend so much, the dovetail groove and the dovetail are more firmly fitted, and it is difficult for the gas pipe coating to be hindered.
第１図は、本発明に係わる仮設ガス管の保護方法の一実
施例の概略図、第２図（ａ）、（ｂ）は同実施例のプラ
スチックス管の正面図、平面図、第３図（ａ）、（ｂ）
は同プラスチックス管の各分割筒の側面図、第４図
（ａ）、（ｂ）は同実施例のエルボの正面図、断面図、
第５図は同エルボの他例の部分斜視図、第６図（ａ）、
（ｂ）は同他例の製作説明図である。 Ａ……プラスチックス管、Ｂ……エルボ、 Ｑ……掘削溝、Ｒ……道路、 ａ……仮設ガス管、 θ1、θ2……断面円弧中心角、 1a、1b……分割筒、 2a……蟻溝、2b……蟻、 3a、3b……筒、4a……ほぞ、 4b……ほぞ穴、５……条、 5a……凹入部、5b……挿入部。FIG. 1 is a schematic view of an embodiment of a method for protecting a temporary gas pipe according to the present invention, and FIGS. 2 (a) and 2 (b) are front views, plan views and third views of a plastics pipe of the same embodiment. Figures (a), (b)
Is a side view of each divided cylinder of the plastics pipe, and FIGS. 4 (a) and 4 (b) are front views and sectional views of the elbow of the same embodiment.
FIG. 5 is a partial perspective view of another example of the elbow, FIG. 6 (a),
(B) is a manufacturing explanatory view of the other example. A ... Plastics pipe, B ... Elbow, Q ... Drilling groove, R ... Road, a ... Temporary gas pipe, θ 1 , θ 2 …… Cross section arc central angle, 1a, 1b …… Split tube, 2a ... Dovetail, 2b ... Ant, 3a, 3b ... Tube, 4a ... Mortise, 4b ... Mortise, 5 ... Article, 5a ... Recess, 5b ... Insert.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石田 圭一 大阪府東大阪市岩田町２丁目３番１号 タ ツタ電線株式会社内 (56)参考文献 実開 昭57−146721（ＪＰ，Ｕ) 実開 昭55−61691（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiichi Ishida 2-3-1, Iwata-cho, Higashi-Osaka City, Osaka Prefecture Tatsuta Electric Wire Co., Ltd. (56) References: 57-146721 (JP, U) Actual Kai 55-61691 (JP, U)
Claims (1)
管Ａを、円形断面としてその長さ方向の面で二分割し、
一方の分割筒1aの断面円弧中心角θ1を180度を越え、24
0度以下とし、その一方の分割筒1aの両分割縁内面全長
に亘って蟻溝2a又は蟻ほぞを形成するとともに、他方の
分割筒1bの両分割縁外面全長に亘って前記一方の分割筒
1aの蟻溝2a又は蟻ほぞに嵌合する蟻ほぞ2b又は蟻溝を形
成したものとし、分割筒1a、1bの一方に前記仮設ガス管
ａを入れた後、他方を被せて前記蟻溝2aと蟻ほぞ2bの嵌
合を介して一体に結合し、そのプラスチック管Ａを仮設
ガス管ａ所要長さに亘って被せることを特徴とする仮設
ガス管の保護方法。1. When the gas pipe a is temporarily installed, the plastic pipe A is divided into two parts with a circular cross section in the plane of the length direction thereof.
The cross-sectional arc center angle θ 1 of one split cylinder 1a exceeds 180 degrees and
It is 0 degrees or less, and while forming the dovetail groove 2a or the dovetail tenon over the entire length of both split edge inner surfaces of the one split tube 1a, the one split tube over the full length of both split edge outer surfaces of the other split tube 1b.
It is assumed that the dovetail groove 2a of 1a or the dovetail groove 2b or the dovetail groove to be fitted to the dovetail groove is formed, and after inserting the temporary gas pipe a into one of the dividing cylinders 1a and 1b, the other is covered and the dovetail groove 2a. A method for protecting a temporary gas pipe, characterized in that the plastic pipe A is covered over the required length of the temporary gas pipe a by connecting them together with the dovetail 2b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083840A JPH0694918B2 (en) | 1989-03-31 | 1989-03-31 | Temporary gas pipe protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1083840A JPH0694918B2 (en) | 1989-03-31 | 1989-03-31 | Temporary gas pipe protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02261998A JPH02261998A (en) | 1990-10-24 |
| JPH0694918B2 true JPH0694918B2 (en) | 1994-11-24 |
Family
ID=13813904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1083840A Expired - Lifetime JPH0694918B2 (en) | 1989-03-31 | 1989-03-31 | Temporary gas pipe protection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694918B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5561691U (en) * | 1978-10-23 | 1980-04-26 | ||
| JPS57146721U (en) * | 1981-03-10 | 1982-09-14 |
-
1989
- 1989-03-31 JP JP1083840A patent/JPH0694918B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02261998A (en) | 1990-10-24 |
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