JPH02225766A - Metal tube - Google Patents
Metal tubeInfo
- Publication number
- JPH02225766A JPH02225766A JP4807389A JP4807389A JPH02225766A JP H02225766 A JPH02225766 A JP H02225766A JP 4807389 A JP4807389 A JP 4807389A JP 4807389 A JP4807389 A JP 4807389A JP H02225766 A JPH02225766 A JP H02225766A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- pipe
- tube
- foamed resin
- resin
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 1
- 229920005749 polyurethane resin Polymers 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 206010009232 Clang associations Diseases 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は例えば建築工事現場で用いられる仮設用管材な
どの金属管材に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to metal pipe materials such as temporary pipe materials used at construction sites, for example.
（従来の技術）
金属管材は内部を中空とすることにより、材料コストを
低減すると共に取扱い易いように軽量化を図っているが
、建築工事現場などでは金属管材の端部開口から水や泥
などが侵入することによって、管壁内面が錆付いたり、
前記泥などが内部で固化して金属管材の重量が増加する
という欠点がある。特に金属管材の長さ寸法が大であっ
たり途中に屈曲部を有するなどの場合は、管壁内面に錆
が発生しているかどうかを確認したり、内部で固化した
泥などを除去することは実際不可能である。(Conventional technology) Metal pipes are made hollow to reduce material costs and to make them lighter in weight for ease of handling. However, at construction sites, water, mud, etc. Intrusion may cause rust on the inner surface of the pipe wall,
There is a disadvantage that the mud solidifies inside and increases the weight of the metal pipe material. In particular, if the length of the metal pipe is large or there is a bend in the middle, it is necessary to check whether rust has formed on the inner surface of the pipe wall or to remove mud that has hardened inside. It's actually impossible.
このような欠点を解消するものとして、実開昭４９−７
５５２３号公報で提案されている金属製の中空足場板が
ある。この従来例は、足場板の端部開口に発泡スチロー
ル製の栓をすることによって、足場板の内部を密閉空胴
とするものである。As a solution to these drawbacks, the
There is a metal hollow scaffolding board proposed in Japanese Patent No. 5523. In this conventional example, the inside of the scaffold board is made into a sealed cavity by plugging the end opening of the scaffold board with a plug made of styrofoam.
（発明が解決しようとする課題）
しかし上記従来例では、金属管材の端部開口から水や泥
などが一旦侵入するとそのまま内部に留まってしまうた
め、管壁内面の錆付きや重量の増加を十分に防止するこ
とが困難であるという問題がある。(Problem to be solved by the invention) However, in the conventional example described above, once water, mud, etc. enter through the end opening of the metal pipe material, it remains inside, so it is not enough to prevent rust on the inner surface of the pipe wall and increase in weight. The problem is that it is difficult to prevent this.
又金属管材の端部開口以外の部位が中空であるため、硬
いものにぶつかった際に管壁が振動してカンカンという
金属音が大きく響くため、建築工事現場などでは近隣に
対する騒音公害を生じ易いという問題もある。In addition, since the parts of the metal pipes other than the end openings are hollow, when the pipe walls collide with a hard object, the pipe walls vibrate and make a loud metallic clanging sound, which can easily cause noise pollution to nearby areas such as at construction sites. There is also the problem.
本発明は上記従来例の問題点に鑑み、水や泥などが端部
開口から侵入することに起因する管内面の鯖付きや重量
の増加を防止するのみならず、金属音の響きを低減する
ことができる金属管材を提供することを目的とするもの
である。In view of the above-mentioned problems of the conventional example, the present invention not only prevents the inner surface of the pipe from becoming sticky and the weight increase caused by water, mud, etc. entering through the end opening, but also reduces the sound of metallic sounds. The purpose of this invention is to provide a metal tube material that can
（課題を解決するための手段）
本発明は上記目的を達成するため、内部に発泡樹脂を充
填したことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention is characterized in that the inside is filled with foamed resin.
（作 用）
本発明の金属管材は内部に発泡樹脂が充填されているの
で、端部開口の水や泥などが端部開口から侵入しようと
してもそれが内部に達するのを阻止することができ、こ
れら水や泥などに起因する管内面の錆の発生や金属管材
自体の重量化を防止することができる。しかも発泡樹脂
は比重が大変小さいので、発泡樹脂の充填によって金属
管材の全重量が増加化する量は実際の使用に支障をきた
さない。(Function) Since the metal pipe material of the present invention is filled with foamed resin inside, even if water, mud, etc. try to enter from the end opening, it can be prevented from reaching the inside. It is possible to prevent the occurrence of rust on the inner surface of the pipe and the weight of the metal pipe itself due to water and mud. Furthermore, since the specific gravity of the foamed resin is very low, the amount that the total weight of the metal tube increases due to filling with the foamed resin does not pose a problem in actual use.
又発泡樹脂によって管壁の振動を減衰させることができ
るので、金属音の響きを抑えることができ、騒音公害の
防止に役立つ。Furthermore, since the foamed resin can attenuate the vibrations of the tube wall, it is possible to suppress the echo of metallic sounds, which helps to prevent noise pollution.
（実施例）
第１図ないし第３図は、本発明を建築工事現場などで用
いられる単管足場用の鋼管に適用した第１実施例を示し
ている。(Embodiment) FIGS. 1 to 3 show a first embodiment in which the present invention is applied to a steel pipe for a single-pipe scaffolding used at a construction site or the like.
本実施例では、鋼管（金属管材）１の内部に、発泡倍率
が３０〜５０倍で独立気泡の発泡ポリウレタン（発泡樹
脂）２を充填している。尚、場合により、発泡ポリウレ
タン２が連続気泡であっても差し支えない。第２図に示
すように、発泡ポリウレタン２は円形断面の鋼管１の内
面に密着状態となっている。第３図は、角形断面の鋼管
１の場合を示している。 本実施例では、鋼管１の内部
に素材を入れ端部開口３を閉じた状態で前記素材を発泡
させることにより、発泡ポリウレタン２を鋼管１の端部
開口３近傍を除く部分に充填している。これにより、端
部開口３の内部空間を利用して連結部材（図示せず）に
より複数の鋼管１を連結することができる。In this embodiment, a steel pipe (metal pipe material) 1 is filled with closed-cell polyurethane foam (foamed resin) 2 with an expansion ratio of 30 to 50 times. Note that, depending on the case, the foamed polyurethane 2 may have open cells. As shown in FIG. 2, the polyurethane foam 2 is in close contact with the inner surface of the steel pipe 1 having a circular cross section. FIG. 3 shows the case of a steel pipe 1 with a square cross section. In this embodiment, a material is placed inside the steel pipe 1 and the material is foamed with the end opening 3 closed, thereby filling the foamed polyurethane 2 into the steel pipe 1 except for the vicinity of the end opening 3. . Thereby, a plurality of steel pipes 1 can be connected by a connecting member (not shown) using the internal space of the end opening 3.
第４図は、本発明を建築工事現場などで用いられる枠組
足場用の足場部材に通用した第２実施例を示す。FIG. 4 shows a second embodiment in which the present invention is applied to a scaffold member for a frame scaffold used at a construction site or the like.
足場部材は、口形状の本体バイブ（金属管材）ｌとこれ
を補強する補強バイブ４とから基本構成されるが、この
内で下端部に端部開口３を有する本体バイブｌの内部に
発泡樹脂２を充填している。本実施例でも、本体バイブ
ｌの端部開口３近傍を除く部分に充填し、足場部材を上
下に連結する際に前記発泡樹脂２が邪魔にならないよう
にしている。The scaffolding member is basically composed of a mouth-shaped main body vibrator (metal tube material) l and a reinforcing vibrator 4 that reinforces the main body vibrator.Among these, the main body vibrator l has an end opening 3 at its lower end, and a foamed resin is placed inside the main body vibrator l. 2 is filled. In this embodiment as well, the foamed resin 2 is filled in the main body vibrator 1 except for the vicinity of the end opening 3 so that the foamed resin 2 does not get in the way when the scaffolding members are connected vertically.
本発明は上記実施例に示す外、種々の態様に構成するこ
とができる。The present invention can be configured in various ways other than those shown in the above embodiments.
例えば上記実施例では、金属管材の端部開口を除く部分
に発泡樹脂を充填しているが、この端部開口にキャップ
材を嵌着したり、又は発泡樹脂を内部全体に充填したり
することができる、発泡樹脂を内部全体に充填する場合
、端部開口には発泡倍率の低い発泡樹脂を充填し、両端
部間には発泡倍率の高い発泡樹脂を充填することもでき
る。尚、発泡樹脂の発泡倍率や素材としての合成樹脂、
及び金属管材の形状やその材質が上記実施例に示すもの
に限定されないのは勿論である。For example, in the above embodiment, the portion of the metal tube excluding the opening at the end is filled with foamed resin, but it is also possible to fit a cap material into this end opening or fill the entire interior with foamed resin. When filling the entire interior with foamed resin, it is also possible to fill the end opening with a foamed resin with a low expansion ratio, and fill the space between both ends with a foamed resin with a high expansion ratio. In addition, the foaming ratio of the foamed resin, the synthetic resin as the material,
It goes without saying that the shape and material of the metal pipe material are not limited to those shown in the above embodiments.
（発明の効果）
本発明の金属管材は上記構成、作用を有するので、金属
管材の軽量性に背馳することなく、水や泥などに起因す
る管壁内面の錆の発生や金属管材自体の重量化を防止す
ることができると共に、硬い物にぶつかった際の金属音
の響きを抑えることができる。(Effects of the Invention) Since the metal pipe material of the present invention has the above-mentioned configuration and function, it can prevent the occurrence of rust on the inner surface of the pipe wall due to water, mud, etc., without going against the lightness of the metal pipe material. It is possible to prevent an increase in weight and also to suppress the sound of metal when hitting a hard object.
第１図は本発明の第１実施例の縦断側面図、第２図はそ
の■−■断面図、第３図は角形断面を有する鋼管の場合
の横断面図、第４図は本発明の第２実施例の縦断正面図
である。
金属管材
発泡樹脂FIG. 1 is a longitudinal sectional side view of the first embodiment of the present invention, FIG. 2 is a cross-sectional view along the line ■-■, FIG. 3 is a cross-sectional view of a steel pipe having a square cross section, and FIG. 4 is a cross-sectional view of the first embodiment of the present invention. FIG. 7 is a longitudinal sectional front view of the second embodiment. Metal tube material foam resin
Claims (1)
管材。(1) A metal tube material characterized by filling the inside with foamed resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4807389A JPH02225766A (en) | 1989-02-27 | 1989-02-27 | Metal tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4807389A JPH02225766A (en) | 1989-02-27 | 1989-02-27 | Metal tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02225766A true JPH02225766A (en) | 1990-09-07 |
Family
ID=12793171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4807389A Pending JPH02225766A (en) | 1989-02-27 | 1989-02-27 | Metal tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02225766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04112929U (en) * | 1991-03-12 | 1992-10-01 | 古澤 洋子 | Truss pipes for underwater and floating structures |
| JP2017019193A (en) * | 2015-07-10 | 2017-01-26 | 東京電力ホールディングス株式会社 | Steel pipe |
-
1989
- 1989-02-27 JP JP4807389A patent/JPH02225766A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04112929U (en) * | 1991-03-12 | 1992-10-01 | 古澤 洋子 | Truss pipes for underwater and floating structures |
| JP2017019193A (en) * | 2015-07-10 | 2017-01-26 | 東京電力ホールディングス株式会社 | Steel pipe |
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