JPH0311515Y2 - - Google Patents
Info
- Publication number
- JPH0311515Y2 JPH0311515Y2 JP1985108702U JP10870285U JPH0311515Y2 JP H0311515 Y2 JPH0311515 Y2 JP H0311515Y2 JP 1985108702 U JP1985108702 U JP 1985108702U JP 10870285 U JP10870285 U JP 10870285U JP H0311515 Y2 JPH0311515 Y2 JP H0311515Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas pipe
- cover
- bellows
- crack
- protective cover
- 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
Links
- 230000001681 protective effect Effects 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 230000004323 axial length Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、地中に埋設したガス管を、掘削工事
等による損傷事故から護るための構造に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a structure for protecting gas pipes buried underground from damage caused by excavation work, etc.
（従来の技術）
従来、管体を保護するカバーとしては実開昭58
−12793号公報に記載の考案が知られている。(Prior technology) Conventionally, as a cover to protect the pipe body,
A device described in Japanese Patent No. 12793 is known.
この考案はフレキシブルホースを外包するカバ
ーである。 This invention is a cover that encloses a flexible hose.
（考案が解決しようとする問題点）
ところが、この従来技術に示されたホースのカ
バー構造は、ホースとカバーとが密着されたもの
であつた。(Problems to be Solved by the Invention) However, in the hose cover structure shown in this prior art, the hose and the cover are in close contact with each other.
ホースとカバーとが密着しているためカバーの
変形によるクツシヨン効果がなく、上からの衝撃
にはきわめて弱かつた。つまり、掘り起こしのと
き、つるはし等の先のとがつたもので、カバーと
ホースとを一緒に破壊するおそれがあつた。 Since the hose and the cover were in close contact with each other, there was no cushioning effect due to deformation of the cover, and the hose was extremely vulnerable to impact from above. In other words, when digging, there was a risk that the cover and hose would be destroyed together with a sharp object such as a pickaxe.
また、スリツトが横方向に位置しているため、
カバー内に浸入した水がカバー内に溜りガス管が
腐食するおそれがあつた。 Also, since the slits are located horizontally,
There was a risk that water that had entered the cover would accumulate inside the cover and corrode the gas pipe.
（問題点を解決するための手段）
本考案のガス管の保護構造は、ガス管保護カバ
ーは、カバー本体が耐衝撃性樹脂により長尺で断
面略円形で内径がガス管外径よりやや大径とされ
た円筒状に形成され、このカバー本体の周壁が軸
方向全長にわたつて自在に曲がることのできる蛇
腹状に形成されるとともに、この周壁の軸方向全
長にわたつてガス管に着脱するための割れ目が形
成されたものであり、このガス管保護カバーが、
蛇腹の断面最小径部とガス管の上部との間に隙間
を設けて、割れ目が下側に位置するようにガス管
に被着されたものである。(Means for solving the problem) The gas pipe protective structure of the present invention is such that the gas pipe protective cover has a long cover body made of impact-resistant resin, a substantially circular cross section, and an inner diameter slightly larger than the outer diameter of the gas pipe. The cover main body is formed into a cylindrical shape with a diameter, and the peripheral wall of this cover body is formed in a bellows shape that can be freely bent over the entire axial length, and can be attached to and detached from the gas pipe over the entire axial length of the peripheral wall. This gas pipe protective cover is
A gap is provided between the smallest cross-sectional diameter part of the bellows and the upper part of the gas pipe, and the bellows is attached to the gas pipe so that the crack is located on the lower side.
（作用）
ガス管上部とカバー本体内面との間の隙間は、
つるはしの先等があたつても耐衝撃性樹脂からな
るカバー本体の変形によるクツシヨン効果により
衝撃力を緩和する。したがつてガス管の破壊を防
ぐことができる。また、割れ目はこれを開くこと
によりガス管への装着が行え、蛇腹状であるから
折曲が自在となり湾曲部への適用及び長尺化を可
能としている。(Function) The gap between the upper part of the gas pipe and the inner surface of the cover body is
Even if the cover is hit by the tip of a pickaxe, the cushioning effect created by the deformation of the cover body made of impact-resistant resin will reduce the impact force. Therefore, destruction of the gas pipe can be prevented. Furthermore, by opening the crack, it can be attached to a gas pipe, and since it is bellows-like, it can be bent freely, making it possible to apply it to curved parts and to make it longer.
（実施例）
以下、本考案の一実施例を図面を参照して説明
する。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
ガス管保護カバー（以下カバーという）は、第
１図に示すように、カバー本体１が耐衝撃性樹脂
により断面略円形で内径がガス管Ｐの外径よりや
や大径とされた円筒状に形成された長尺状のもの
である。カバー本体１の周壁２が軸方向全長にわ
たつて蛇腹状３に形成されるとともに、この周壁
２に軸方向全長にわたつて割れ目４が形成されて
いる。 As shown in Fig. 1, the gas pipe protective cover (hereinafter referred to as the cover) is made of a cover body 1 made of impact-resistant resin, which has a cylindrical shape with a substantially circular cross section and an inner diameter slightly larger than the outer diameter of the gas pipe P. It is formed into a long shape. A peripheral wall 2 of the cover main body 1 is formed in a bellows shape 3 over the entire axial length, and a crack 4 is formed in the peripheral wall 2 over the entire axial length.
このようになるカバー本体１は、原料樹脂を筒
状に押し出すとともに、周面が波形の２つのロー
ラの間を通過させて周壁２を蛇腹状３に形成し、
周壁２の一部を軸方向全長にわたつて切り取り割
れ目４を形成することにより製造される。上記耐
衝撃性樹脂としては、一般に耐衝撃性樹脂管成形
用に使用されているものであればよく、例えば、
塩化ビニール樹脂に、アクリロニトリル−ブタジ
エンゴム（NBR）、アクリロニトリル−ブタジエ
ン−スチレン共重合体（ABS樹脂）、スチレン−
ブタジエンゴム（SBR）、アクリル酸およびメタ
クリル酸重合物、塩素化ポリオレフイン、エチレ
ン共重合体等の耐衝撃性を向上させる樹脂をブレ
ンドしたものが好適である。 The cover body 1 thus constructed is made by extruding raw resin into a cylindrical shape and passing it between two rollers with corrugated peripheral surfaces to form the peripheral wall 2 into a bellows shape 3.
It is manufactured by cutting out a part of the peripheral wall 2 over the entire length in the axial direction to form a crack 4. The above-mentioned impact-resistant resin may be one that is generally used for impact-resistant resin tube molding, such as:
PVC resin, acrylonitrile-butadiene rubber (NBR), acrylonitrile-butadiene-styrene copolymer (ABS resin), styrene-
Blends of resins that improve impact resistance, such as butadiene rubber (SBR), acrylic and methacrylic acid polymers, chlorinated polyolefins, and ethylene copolymers, are suitable.
カバー本体１の太さは保護しようとするガス管
Ｐの太さに応じて適宜設計変更され、通常、装着
時にカバー本体１の内壁（蛇腹の断面最小径部）
とガス管Ｐとの間に所定の間隙が生じる程度に形
成される。 The thickness of the cover body 1 is appropriately designed depending on the thickness of the gas pipe P to be protected, and usually the inner wall of the cover body 1 (minimum diameter section of the bellows) is
and the gas pipe P to such an extent that a predetermined gap is formed between the gas pipe P and the gas pipe P.
周壁２の蛇腹３は、螺旋状に連続して形成され
ていてもよく、また軸方向に直角な複数の環から
形成されていてもよい。この蛇腹３のピツチおよ
び蛇腹３の波の高さは、周壁２の厚みとカバー１
の太さに応じ、湾曲させ易くしかも割れ目４が開
き易い寸法に適宜決定される。周壁２の厚みは、
十分な耐衝撃性を発揮しかつ湾曲させ易い厚みに
なされている。 The bellows 3 of the peripheral wall 2 may be formed continuously in a spiral shape, or may be formed from a plurality of rings perpendicular to the axial direction. The pitch of the bellows 3 and the height of the waves of the bellows 3 are determined by the thickness of the peripheral wall 2 and the cover 1.
Depending on the thickness, the size is appropriately determined so that it is easy to curve and the crack 4 is easy to open. The thickness of the peripheral wall 2 is
It exhibits sufficient impact resistance and is thick enough to be easily bent.
割れ目４は、装着時にガス管Ｐをカバー本体１
内に通過させるためのもので、この割れ目４の間
隙は、カバー本体１をガス管Ｐに容易に装着する
ことができ、しかも装着後ガス管Ｐから外れにく
い程度が好ましい。この割れ目４は周壁２を軸方
向に切開するだけのものであつてもよい。 Crack 4 connects gas pipe P to cover body 1 when installed.
It is preferable that the gap between the cracks 4 is such that the cover body 1 can be easily attached to the gas pipe P and that it will not easily come off from the gas pipe P after being attached. The crack 4 may simply cut the peripheral wall 2 in the axial direction.
このようになるカバー本体１は、コイル状に巻
回されて運搬される。ガス管Ｐへの装着は、カバ
ー本体１の割れ目４をガス管Ｐに向けて上方から
強圧し、割れ目４を第２図に示すように広げ、順
次その間からガス管Ｐをカバー本体１内に入り込
ませる（第３図参照）ことにより行われる。 The cover main body 1 thus constructed is wound into a coil and transported. To attach the gas pipe P to the gas pipe P, press the crack 4 of the cover main body 1 toward the gas pipe P from above, widen the crack 4 as shown in Fig. 2, and sequentially insert the gas pipe P into the cover main body 1 from between the cracks 4. This is done by inserting it into the body (see Figure 3).
保護カバーをつけたガス管を埋め戻すとき、土
砂がガス管の下方に入り込み保護カバーを押し上
げ互いの下部同士が接触し、ガス管の上部と保護
カバーとの間に隙間が生じた状態で埋設される。 When backfilling a gas pipe with a protective cover, earth and sand get under the gas pipe and push up the protective cover, causing their lower parts to touch each other, leaving a gap between the top of the gas pipe and the protective cover. be done.
（考案の効果）
本考案に係るガス管の保護構造は、保護カバー
でガス管を被覆することができ、しかもカバー本
体が耐衝撃性樹脂により蛇腹状に形成されている
ため、バツクホー等の掘削機械によりすくい上げ
られた場合でも破損したりすることがない。した
がつて、地中に埋設したガス管を、掘削工事等に
おける損傷事故から完全に護ることができる。(Effects of the invention) The gas pipe protection structure according to the invention can cover the gas pipe with a protective cover, and the cover body is made of impact-resistant resin in a bellows shape. Even if it is scooped up by a machine, it will not be damaged. Therefore, gas pipes buried underground can be completely protected from damage accidents caused by excavation work and the like.
蛇腹状保護カバーの断面最小径部とガス管との
間に適当な隙間が設けられている（保護カバーを
つけたガス管を埋戻すとき、土砂がガス管の下方
に入り込み保護カバーを互いの下部同士が接触す
るまで押し上げて、ガス管の上部と保護カバーと
の間に隙間が生じる。）ことにより、つるはし等
のような先のとがつたもので保護カバーに衝撃を
与えても、保護カバーの変形によるクツシヨン効
果によつてガス管が破壊されない。 An appropriate gap is provided between the smallest cross-sectional diameter part of the bellows-shaped protective cover and the gas pipe (when backfilling a gas pipe with a protective cover, earth and sand may get under the gas pipe and cause the protective covers to overlap each other). (Push up until the bottoms touch each other, creating a gap between the top of the gas pipe and the protective cover.) This ensures that even if the protective cover is hit with a sharp object such as a pickaxe, it will not be protected. The gas pipe is not destroyed by the cushioning effect caused by the deformation of the cover.
長尺状であるため、長い区間にわたつて連続し
てガス管を保護することができるうえ、複数のガ
ス管に装着する場合にガス管の長さが異なつてい
てもその場で対応することができる。 Because it is long, it can protect gas pipes continuously over a long section, and when installed on multiple gas pipes, it can be used on the spot even if the gas pipes have different lengths. be able to.
周壁が蛇腹状に形成され、湾曲させることがで
きるため、従来装着が不可能で保護されていなか
つたガス管の湾曲部分にも装着できる。 Since the circumferential wall is formed in a bellows shape and can be curved, it can be attached to curved portions of gas pipes that were conventionally impossible to attach and were not protected.
ガス事業法ではポリエチレン製ガス管を埋設す
る場合は、その周りを砂で囲み保護しなければな
らないとされているが、本考案の構造を採用すれ
ば、その必要がなくなり砂が不要となるため工費
の節減を図ることができる。 According to the Gas Business Law, when polyethylene gas pipes are buried, they must be surrounded by sand to protect them. However, if the structure of this invention is adopted, this is not necessary and sand is no longer necessary. It is possible to reduce construction costs.
コイル状に巻回することができるため、保管、
運搬が容易である。 Because it can be wound into a coil, it can be stored,
Easy to transport.
蛇腹状であり、かつ割れ目が形成されているた
め、保護しようとするガス管の配管および接続作
業をした後に装着することができる上、ガス管の
補修や点検を行う際には、管体を切断したりする
ことなく容易に取り外すことができる。しかも補
修・点検後、再度使用することができる。保護カ
バーは割れ目を下にしてガス管に装着されている
ので、カバー本体内に水が溜るのを防ぐことがで
きる。よつて、保護しているガス管の腐食を防止
することができる。また、隙間があるから上から
の衝撃に強い構造となつている。 Because it is bellows-shaped and has cracks, it can be installed after the piping and connection work of the gas pipe to be protected is completed, and when repairing or inspecting the gas pipe, the pipe body can be It can be easily removed without cutting. Moreover, it can be used again after repair or inspection. The protective cover is attached to the gas pipe with the crack facing down, which prevents water from accumulating inside the cover body. Therefore, corrosion of the gas pipe being protected can be prevented. Also, because there are gaps, the structure is resistant to impacts from above.
第１図乃至第３図は、本考案に係るガス管の保
護構造の一実施例を示し、第１図は保護カバーの
斜視図、第２図は保護カバーを装着する状態を示
す正面断面図、第３図は同側面図である。
１……ガス管の保護カバー、２……周壁、３…
…蛇腹、４……割れ目。
1 to 3 show an embodiment of the gas pipe protection structure according to the present invention, FIG. 1 is a perspective view of the protective cover, and FIG. 2 is a front sectional view showing the state in which the protective cover is attached. , FIG. 3 is a side view of the same. 1... Gas pipe protective cover, 2... Surrounding wall, 3...
...bellows, 4...crack.
Claims (1)
脂により長尺で断面略円形で内径がガス管外径よ
りやや大径とされた円筒状に形成され、このカバ
ー本体の周壁が軸方向全長にわたつて自在に曲が
ることのできる蛇腹状に形成されるとともに、こ
の周壁の軸方向全長にわたつてガス管に着脱する
ための割れ目が形成されたものであり、 このガス管保護カバーが、蛇腹の断面最小径部
とガス管の上部との間に隙間を設けて、割れ目が
下側に位置するようにガス管に被着されたことを
特徴とするガス管の保護構造。[Scope of Claim for Utility Model Registration] The gas pipe protective cover is made of impact-resistant resin and has a long cylindrical shape with a substantially circular cross section and an inner diameter slightly larger than the outer diameter of the gas pipe. The peripheral wall of the main body is formed into a bellows shape that can be bent freely over the entire axial length, and a crack is formed along the entire axial length of the peripheral wall for attaching to and removing from the gas pipe. A gas pipe characterized in that the gas pipe protective cover is attached to the gas pipe so that a gap is provided between the smallest cross-sectional diameter part of the bellows and the upper part of the gas pipe, and the crack is located on the lower side. Protective structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985108702U JPH0311515Y2 (en) | 1985-07-15 | 1985-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985108702U JPH0311515Y2 (en) | 1985-07-15 | 1985-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6216888U JPS6216888U (en) | 1987-01-31 |
| JPH0311515Y2 true JPH0311515Y2 (en) | 1991-03-19 |
Family
ID=30986140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985108702U Expired JPH0311515Y2 (en) | 1985-07-15 | 1985-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0311515Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521584Y2 (en) * | 1987-02-24 | 1993-06-02 | ||
| JP2515190Y2 (en) * | 1990-03-01 | 1996-10-30 | 典志 森本 | Protection tube |
| JP2006005983A (en) | 2004-06-15 | 2006-01-05 | Yazaki Corp | Corrugate tube |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812793B2 (en) * | 1975-05-16 | 1983-03-10 | ソニー株式会社 | Eizoushingouno Kirokusaiseiki |
| JPS60141112A (en) * | 1983-12-28 | 1985-07-26 | 住友電装株式会社 | Resin flexible tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812793U (en) * | 1981-07-17 | 1983-01-26 | 三菱自動車工業株式会社 | hose cover |
-
1985
- 1985-07-15 JP JP1985108702U patent/JPH0311515Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5812793B2 (en) * | 1975-05-16 | 1983-03-10 | ソニー株式会社 | Eizoushingouno Kirokusaiseiki |
| JPS60141112A (en) * | 1983-12-28 | 1985-07-26 | 住友電装株式会社 | Resin flexible tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6216888U (en) | 1987-01-31 |
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