JPS6229655A - Composite square pipe - Google Patents
Composite square pipeInfo
- Publication number
- JPS6229655A JPS6229655A JP16675985A JP16675985A JPS6229655A JP S6229655 A JPS6229655 A JP S6229655A JP 16675985 A JP16675985 A JP 16675985A JP 16675985 A JP16675985 A JP 16675985A JP S6229655 A JPS6229655 A JP S6229655A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- outer tube
- present
- section
- cross
- 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
- Rod-Shaped Construction Members (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】
〔産業上の利用分野〕
本発明は管体、特に構造材等の用途に好適な管体に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pipe body, particularly a pipe body suitable for use as a structural material.
土木、建築等の構造材として角形管（鋼管）が用いられ
ている。しかし、この角形管は通常の鋼管に較べ断面方
向、特に平板部（壁面）開方向での応力に弱いという難
点がある。また１通常この種の管は丸管を角形に成形加
工するか、鋼板を溝形断面に成形した後、溶接接合する
等の方法により製造されるが、このようにして得られる
角形管はその製造上の制約から肉厚に一定の限度があり
、このため曲げに対する強度等の面から構造材としての
用途が限られる場合があった。Square pipes (steel pipes) are used as structural materials in civil engineering, architecture, etc. However, this rectangular tube has the disadvantage that it is weaker against stress in the cross-sectional direction, especially in the direction in which the flat plate portion (wall surface) opens, compared to ordinary steel tubes. In addition, 1. Normally, this type of tube is manufactured by forming a round tube into a square shape, or by forming a steel plate into a grooved cross section and then welding it together. Due to manufacturing constraints, there is a certain limit to the wall thickness, which may limit its use as a structural material in terms of strength against bending.
本発明はこのような従来の問題に鑑みなされたもので、
角管形でありながら平板部間の応力や曲げに対し優れた
強度を有する管体を提供せんとするものである。The present invention was made in view of such conventional problems,
It is an object of the present invention to provide a tube body that has a rectangular tube shape but has excellent strength against stress and bending between flat plate portions.
〔問題を解決するための手段及び作用〕このため本発明
は、断面角形の外管内に。[Means and effects for solving the problem] For this reason, the present invention provides an outer tube having a rectangular cross section.
周方向複数箇所が外管内面に接するよう断面丸形の内管
を嵌合せしめた管体構造としたものである。It has a tubular structure in which an inner tube with a round cross section is fitted so that multiple points in the circumferential direction are in contact with the inner surface of the outer tube.
このような管体構造では、外管内側に嵌合された内管が
外管平板部を支持して平板部間方向の応力に対抗するた
め高い壁面強度が得られ、しかも曲げ等に対しても高い
強度が得られる。In such a tube structure, the inner tube fitted inside the outer tube supports the flat plate portion of the outer tube and resists stress in the direction between the flat plate portions, resulting in high wall strength and resistance to bending, etc. High strength can also be obtained.
第１図は本発明の一実施例を示すもので。 FIG. 1 shows one embodiment of the present invention.
断面四角形の外管（１）の内側に、外管内面の各辺（平
板部）に接するよう断面丸形の内管（２）を嵌合せしめ
た構造となっている。It has a structure in which an inner tube (2) with a round cross section is fitted inside an outer tube (1) with a square cross section so as to be in contact with each side (flat plate part) of the inner surface of the outer tube.
本発明の複合角管を構成する外管は任意の角形断面とす
ることができ、例えば第２図Ｇ）及び（ロ））に示すよ
うに断面六角形、断面六角形の外管（１）とすることが
できる。この場合にも。The outer tube constituting the composite rectangular tube of the present invention can have any rectangular cross section. For example, as shown in FIG. It can be done. Also in this case.
内管（２）は外管内面の各辺に接するよう嵌合している
。The inner tube (2) is fitted in contact with each side of the inner surface of the outer tube.
以上のような複合角管は種々の方法により製造すること
ができ１例えばバッチ式の場合、第３図に示すように外
管部材（１’） （丸管）内に内管部材（２）を挿入し
、多段のロールフォーミング方式やプレス方式により外
管部材（１′ｊを角形管に成形することにより製造する
ことが可能である。この場合、外管成形後のサイズに応
じ外径Ｄ＝（Ｌ−２ｔ）を有する内管部材（２′）を外
管管材（１５に挿入し成形が行われる。また他の方法と
しては、板体を曲げ成形した外管部材内に内管部材を置
き、外管部材を所定の形状ｌこ成形、拘束しつつそのシ
ーム部の溶接を行うことにより製造することもできる。The above composite square tube can be manufactured by various methods.1 For example, in the case of a batch method, as shown in Fig. 3, an inner tube member (2) is placed inside an outer tube member (1') (round tube). It is possible to manufacture the outer tube member (1'j) by inserting it into a rectangular tube using a multi-stage roll forming method or pressing method.In this case, the outer diameter D is adjusted according to the size after the outer tube is formed. =(L-2t) is inserted into the outer tube material (15) and molding is performed.Another method is to insert the inner tube member into the outer tube member which is formed by bending a plate. It can also be manufactured by placing the outer tube member in a predetermined shape, forming the outer tube member into a predetermined shape, and welding the seam portion while restraining the outer tube member.
また以上のバッチ式に対し連続式で製造することも可能
である。Furthermore, in contrast to the above batch method, continuous method production is also possible.
このような製造において、外管部材、内管部材に使用さ
れる管体としては、継目無管、溶接管のいずれをも使用
することができることは言うまでもない。In such manufacturing, it goes without saying that either a seamless pipe or a welded pipe can be used as the pipe body used for the outer pipe member and the inner pipe member.
以上のような本発明の複合角管は、これを構造材として
用いた場合、第４図に示すように角形管たる外管（１〕
の内側に嵌合し内面各辺に接した断面丸形の内管（２）
が、外管の平板部αＱ力方向作用する応力ｌこ対抗する
ため１通常の角形管に較べ優れた壁面強度が得られる。When the composite rectangular tube of the present invention as described above is used as a structural material, the outer tube (1) which is a rectangular tube as shown in FIG.
An inner tube (2) with a round cross section that fits inside the and touches each side of the inner surface.
However, since the stress l acting in the direction of the force αQ on the flat plate portion of the outer tube is opposed, superior wall strength can be obtained compared to a normal square tube.
加えて外管及び内管の複合化により高い断面係数が得ら
れるため、従来肉厚上の制約から製造できなかった高断
面係数の構造用角形管を得ることが可能となる。In addition, since a high section modulus can be obtained by combining the outer tube and the inner tube, it becomes possible to obtain a structural rectangular tube with a high section modulus, which could not be manufactured conventionally due to restrictions on wall thickness.
また１本発明の複合角管はこのような構造材としての用
途のほかに、熱交換用管体、断熱用管体等の種々の用途
に供することができるＯ
例えば熱交換用管体として用いる場合には、第５図（イ
）に示すように、内管・外管間の空間（３）と内管内と
に熱交換を行うべき高温及び低温の各流体を流通させる
ようにする。また、断熱用管体として用いる場合には、
内管・外管間の空間に断熱材（４）を充填し、１’：管
（２）内に流体を流通させるようにする。In addition to the use as a structural material, the composite rectangular tube of the present invention can be used for various purposes such as a heat exchange tube, a heat insulation tube, etc. For example, it can be used as a heat exchange tube. In this case, as shown in FIG. 5(a), high-temperature and low-temperature fluids for heat exchange are made to flow through the space (3) between the inner and outer tubes and the inside of the inner tube. In addition, when used as a heat insulating pipe,
The space between the inner tube and the outer tube is filled with a heat insulating material (4) so that fluid can flow through the tube (2).
以上述べた本発明によれば、特に構造材として優れた壁
面強度及び曲げ強度を有する角形管を提供することがで
き、従来強度面から制約があった構造材としての角形管
の用途を大幅に拡大できるものである・According to the present invention described above, it is possible to provide a rectangular tube having particularly excellent wall strength and bending strength as a structural material, and the use of the rectangular tube as a structural material, which has conventionally been limited in terms of strength, can be greatly expanded. It is something that can be expanded.
第１図は本発明の一実施例における複合角管断面形状を
示す説明図である。第２図（イ）及び（ロ）はそれぞれ
本発明の他の実施例における複合角管断面形状を示す説
明図である。第３図は本発明材の一裂造例を示す説明図
である。第４図は本発明材に対する応力作用状況を示す
説明図である。第５図（イ）及び（に）はそれぞれ本発
明材の使用態様を示す説明図である。
図において、（１）は外管％（２）は内管を各示す。FIG. 1 is an explanatory diagram showing a cross-sectional shape of a composite rectangular tube in an embodiment of the present invention. FIGS. 2(A) and 2(B) are explanatory diagrams showing the cross-sectional shape of a composite rectangular tube in other embodiments of the present invention, respectively. FIG. 3 is an explanatory diagram showing an example of a single-piece construction of the material of the present invention. FIG. 4 is an explanatory diagram showing the state of stress acting on the material of the present invention. FIGS. 5(a) and 5(b) are explanatory diagrams showing the manner in which the material of the present invention is used, respectively. In the figure, (1) indicates the outer tube (%) and (2) indicates the inner tube.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16675985A JPS6229655A (en) | 1985-07-30 | 1985-07-30 | Composite square pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16675985A JPS6229655A (en) | 1985-07-30 | 1985-07-30 | Composite square pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6229655A true JPS6229655A (en) | 1987-02-07 |
Family
ID=15837191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16675985A Pending JPS6229655A (en) | 1985-07-30 | 1985-07-30 | Composite square pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6229655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210224A (en) * | 2008-03-06 | 2009-09-17 | Hitachi Cable Ltd | Heat transfer tube for supercooler, and method for manufacturing the heat transfer tube |
-
1985
- 1985-07-30 JP JP16675985A patent/JPS6229655A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210224A (en) * | 2008-03-06 | 2009-09-17 | Hitachi Cable Ltd | Heat transfer tube for supercooler, and method for manufacturing the heat transfer tube |
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