JPH09242196A - Flange coupling for deformed steel pipe - Google Patents
Flange coupling for deformed steel pipeInfo
- Publication number
- JPH09242196A JPH09242196A JP4731596A JP4731596A JPH09242196A JP H09242196 A JPH09242196 A JP H09242196A JP 4731596 A JP4731596 A JP 4731596A JP 4731596 A JP4731596 A JP 4731596A JP H09242196 A JPH09242196 A JP H09242196A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- base
- ring
- steel pipe
- diameter
- 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.)
- Granted
Links
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、送電用鉄塔など
の鋼管構造物において異径の鋼管同士を接合する際に使
用する異径鋼管用フランジ継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flange joint for different diameter steel pipes used for joining steel pipes having different diameters in a steel pipe structure such as a power transmission tower.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】例えば、
主柱材が鋼管からなる送電用鉄塔においては、図２に示
すように、高い位置の主柱材の径をそれより下側の主柱
材の径より小さくする場合があり、この場合には異径の
鋼管Ｐ1 ，Ｐ2 同士を接合する必要がある。主柱材の接
合には、鋼管の端部に溶接した厚板同士をボルト接合す
る方式、あるいは鍛造製のフランジ継手同士をボルト接
合する方式が用いられており、鍛造製のフランジ継手を
用いて異径鋼管の接合を行う場合には、大きい鋼管径の
位置で、鋼管径の大きい側に接続されるフランジ継手の
寸法に合わせて鋼管径の小さい側に接続されるフランジ
継手の大きさが決められていた。BACKGROUND OF THE INVENTION Problems to be Solved by the Invention
In a power transmission tower in which the main pillar is made of steel pipe, as shown in FIG. 2, the diameter of the main pillar at a higher position may be smaller than the diameter of the main pillar below it. In this case, It is necessary to join steel pipes P 1 and P 2 having different diameters. For joining main pillars, a method of bolting thick plates welded to the ends of steel pipes or a method of bolting forged flange joints to each other is used, using forged flange joints. When joining different diameter steel pipes, determine the size of the flange joint to be connected to the smaller steel pipe diameter side at the position of the larger steel pipe diameter according to the size of the flange joint to be connected to the larger steel pipe diameter side. It was being done.
【０００３】即ち、図３に示すように、鋼管径の大きい
方の鋼管Ｐ1 にフランジ継手１１が、鋼管径の小さい方
の鋼管Ｐ2 にフランジ継手１２が接続されており、小径
用のフランジ継手１２のフランジ部１２ｂの外径を大径
用のフランジ継手１１のフランジ部１１ｂの外径に一致
させていた。そのため、小径用のフランジ継手１２のフ
ランジ部１２ｂも大型化し、大幅な重量のアップとな
り、コストも高いものとなる問題点があった。That is, as shown in FIG. 3, a flange joint 11 is connected to a steel pipe P 1 having a larger steel pipe diameter and a flange joint 12 is connected to a steel pipe P 2 having a smaller steel pipe diameter. The outer diameter of the flange portion 12b of the joint 12 was made to match the outer diameter of the flange portion 11b of the flange joint 11 for large diameter. Therefore, there is a problem that the flange portion 12b of the flange joint 12 for a small diameter is also increased in size, the weight is significantly increased, and the cost is increased.
【０００４】この発明は、前述のような問題点を解消す
べくなされたもので、その目的は、小さい鋼管径の位置
で異径の鋼管を接合することにより、フランジ継手の形
状を小さくし、軽量化およびコストダウンを図ることの
できる異径鋼管用フランジ継手を提供することにある。The present invention has been made to solve the above-mentioned problems, and an object thereof is to reduce the shape of a flange joint by joining steel pipes having different diameters at a position of a small steel pipe diameter. An object of the present invention is to provide a flange joint for different-diameter steel pipes that can reduce weight and cost.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明では、鋼管の端部に基端が接続される略円筒
体状の基部リングと、この基部リングの先端から半径方
向外側に一体的に突出するフランジ部とからなるフラン
ジ継手において、基部リングのフランジ付け根部を基部
リングの基端側よりも小径とし、基部リングの形状を基
端側に向かって拡がる逆円錐台リング状として、異径鋼
管用フランジ継手を構成する。In order to achieve the above object, according to the present invention, a substantially cylindrical base ring having a base end connected to an end of a steel pipe, and a radial outer side from a tip of the base ring. In a flange joint consisting of a flange that integrally projects with the base ring, the flange root of the base ring has a smaller diameter than the base end side of the base ring, and the shape of the base ring expands toward the base end side. As a result, a flange joint for different diameter steel pipe is configured.
【０００６】この異径鋼管用フランジ継手を径の大きい
方の鋼管の端部に溶接で取付け、一般的な形状で小径の
フランジ継手を径の小さい方の鋼管の端部に溶接で取付
ける。異径鋼管用フランジ継手の基部リングは逆円錐台
リング状であるため、そのフランジ付け根部を小径のフ
ランジ継手の基部リングのフランジ付け根部と一致させ
ることができ、異径鋼管用フランジ継手のフランジ部を
小径のフランジ継手に合わせて小径とすることができ、
一対のフランジ継手のフランジ外径を従来よりも大幅に
小さくすることができる。This flange joint for different diameter steel pipes is attached by welding to the end portion of the steel pipe having the larger diameter, and the flange joint having a general shape and smaller diameter is attached to the end portion of the steel pipe having the smaller diameter by welding. Since the base ring of the flange joint for different diameter steel pipe has an inverted truncated cone ring shape, its flange root can be matched with the flange root of the base ring of the small diameter flange joint, and the flange of the flange joint for different diameter steel pipe The part can have a small diameter to fit a small diameter flange joint,
The outer diameter of the flange of the pair of flange joints can be made significantly smaller than the conventional one.
【０００７】[0007]
【発明の実施の形態】以下、この発明を図示する一実施
例に基づいて説明する。これは、送電用鉄塔における鋼
管主柱材の接合部に適用した例であり、図１にこの発明
に係る異径鋼管用フランジ継手の実施例を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. This is an example applied to a joint portion of steel pipe main column members in a power transmission tower, and FIG. 1 shows an embodiment of a flange joint for different diameter steel pipes according to the present invention.
【０００８】図１において、異径の鋼管同士を接合する
一対のフランジ継手は、鋼管径の大きい方の鋼管Ｐ1 の
端部に取付けられる特殊な形状の異径鋼管用フランジ継
手１と、鋼管径の小さい方の鋼管Ｐ2 の端部に取付けら
れる一般的な形状の小径のフランジ継手２からなる。In FIG. 1, a pair of flange joints for joining steel pipes having different diameters is a flange joint for different diameter steel pipes 1 having a special shape, which is attached to an end of a steel pipe P 1 having a larger steel pipe diameter. It consists of a small diameter flange joint 2 of a general shape that is attached to the end of the smaller diameter steel pipe P 2 .
【０００９】異径鋼管用フランジ継手１は、基端が鋼管
Ｐ1 の端部に溶接で取付けられる基部リング１ａと、こ
の基部リング１ａの先端に半径方向外側に向かって一体
的に突設されたフランジ部１ｂとからなり、基部リング
１ａの先端側のフランジ付け根部１ｃが通常のフランジ
継手２において対応するフランジ付け根部２ｃと一致す
るように、フランジ付け根部１ｃの内径を鋼管Ｐ1 の内
径よりも小径とし、基部リング１ａを鋼管Ｐ1 側に向か
って広がる逆円錐台リング、即ち底のないお椀状として
いる。The flange joint 1 for different diameter steel pipes has a base ring 1a whose base end is attached to the end of the steel pipe P 1 by welding, and a base ring 1a which is integrally projected at the tip end of the base ring 1a toward the outside in the radial direction. The inner diameter of the flange root portion 1c is equal to the inner diameter of the steel pipe P 1 so that the flange root portion 1c on the tip side of the base ring 1a matches the corresponding flange root portion 2c in the normal flange joint 2. The diameter of the base ring 1a is smaller than that of the base pipe 1a, and the base ring 1a is an inverted truncated cone ring that widens toward the side of the steel pipe P 1 , that is, a bowl-shaped bowl without a bottom.
【００１０】また、基部リング１ａの基端部１ｄは、鋼
管Ｐ1 に作用する軸力によるリングの引張力に耐えるよ
うに、他の部分よりも厚肉とされ、その外周面に、開先
テーパーと係合テーパーを有する接合段部１ｅが形成さ
れ、鋼管Ｐ1 の接合端部を嵌合した後、全周自動溶接に
より接合される。The base end portion 1d of the base ring 1a is thicker than the other portions so as to withstand the tensile force of the ring due to the axial force acting on the steel pipe P 1. A joining step portion 1e having a taper and an engaging taper is formed, and the joining end portion of the steel pipe P 1 is fitted and then joined by full-circumference automatic welding.
【００１１】フランジ継手２は、略円筒形状の基部リン
グ２ａとフランジ部２ｂからなり、鋼管Ｐ2 に対応した
通常の寸法のフランジ継手であり、異径鋼管用フランジ
継手１のフランジ部１ｂの外径をフランジ部２ｂの外径
と同一寸法としている。フランジ部１ｂおよび２ｂは、
それぞれ接合用ボルト孔１ｆ，２ｆが周方向に等間隔を
おいて多数穿設されており、ボルトナットにより接合さ
れる。[0011] flange joint 2 consists base ring 2a and the flange portion 2b of the substantially cylindrical shape, a flange joint of a normal dimension corresponding to the steel pipe P 2, outside of the different-diameter steel tube flange joint 1 flange portion 1b The diameter is the same as the outer diameter of the flange portion 2b. The flange portions 1b and 2b are
A large number of joining bolt holes 1f and 2f are provided at equal intervals in the circumferential direction, and are joined by bolt nuts.
【００１２】また、必要に応じて、異径鋼管用フランジ
継手１の基部リング１ａの外周面には、基部リング１ａ
とフランジ１ｂを連結する側面視で略三角形状の補強リ
ブ３を本体と一体的に形成している。この補強リブ３は
周方向に間隔をおいて適宜の数だけ配設している。If necessary, the base ring 1a of the flange joint 1 for different diameter steel pipes is attached to the outer peripheral surface of the base ring 1a.
The reinforcing rib 3 having a substantially triangular shape in a side view that connects the flange 1b with the main body is integrally formed with the main body. The reinforcing ribs 3 are arranged at appropriate intervals in the circumferential direction.
【００１３】以上のような構成において、異径鋼管用フ
ランジ継手１は鋳鋼を用いて鋳造で製作することがで
き、通常のフランジ継手２は従来と同様の鍛造製などで
あり、異径鋼管用フランジ継手１の基部リング１ａおよ
びフランジ継手２の基部リング２ａが、それぞれ鋼管Ｐ
1 ，Ｐ2 に溶接で接合され、同一外径寸法のフランジ１
ｂ，２ｂ同士がボルト接合される。フランジ１ｂおよび
２ｂの外径は従来よりも大幅に小径とすることができ
る。また、鋼管径が異なっていても、逆円錐台リング状
の基部リング１ａにより鋼管Ｐ1 とＰ2 間の断面変化が
滑らかになり、応力が円滑に伝達され、十分な継手強度
が得られる。また、鋳鋼は鉄塔用高張力鋼鋼材などと同
一レベルの機械的性質を有し、また溶接性も良好であ
る。In the above-mentioned structure, the flange joint 1 for different diameter steel pipe can be manufactured by casting using cast steel, and the normal flange joint 2 is forged like the conventional one. The base ring 1a of the flange joint 1 and the base ring 2a of the flange joint 2 are respectively the steel pipe P.
Flange 1 with the same outer diameter, welded to 1 and P 2
b and 2b are bolted to each other. The outer diameters of the flanges 1b and 2b can be made significantly smaller than conventional ones. Even if the diameters of the steel pipes are different, the cross section change between the steel pipes P 1 and P 2 is smoothed by the base ring 1a having the shape of an inverted truncated cone, stress is smoothly transmitted, and sufficient joint strength is obtained. Cast steel has the same level of mechanical properties as high-strength steel for towers and the like, and also has good weldability.
【００１４】なお、以上は送電用鉄塔の主柱材の接合部
に適用した例を示したが、これに限らず、その他の鋼管
構造物における異径の鋼管同士の接合にも適用できるこ
とはいうまでもない。In the above, the example applied to the joint portion of the main pillar material of the power transmission tower is shown, but the present invention is not limited to this, and it is also applicable to the joining of steel pipes having different diameters in other steel pipe structures. There is no end.
【００１５】[0015]
【発明の効果】この発明に係る異径鋼管用フランジ継手
は、基部リングのフランジ付け根部を基部リングの基端
側よりも小径とし、基部リングの形状を基端側に向かっ
て拡がる逆円錐台リング状としたため、次のような効果
を奏する。In the flange joint for different diameter steel pipes according to the present invention, the flange root of the base ring has a diameter smaller than that of the base end side of the base ring, and the shape of the base ring expands toward the base end side. Since it has a ring shape, the following effects are achieved.
【００１６】(1) 異径の鋼管同士を接合する場合に小さ
い鋼管径の位置で行うことにより、フランジ継手の形状
を小さくすることができ、大幅な軽量化とコストダウン
が図られる。(1) When joining steel pipes having different diameters to each other, the shape of the flange joint can be made small by performing the work at a position where the diameter of the steel pipe is small, and the weight and cost can be significantly reduced.
【００１７】(2) 逆円錐台リング状の基部リングにより
異径鋼管間の断面変化が滑らかになり、応力が円滑に伝
達され、十分な継手強度が得られる。(2) The base ring in the shape of an inverted truncated cone ring smoothes the cross-sectional change between steel pipes of different diameters, the stress is smoothly transmitted, and sufficient joint strength is obtained.
【００１８】(3) 鋳鋼製とすることにより、鉄塔用高張
力鋼鋼材などと同一レベルの機械的性質を得ることがで
き、また溶接性も良好である。(3) By using cast steel, it is possible to obtain the same level of mechanical properties as high-strength steel for towers and the like, and also good weldability.
【図１】この発明に係る異径鋼管用フランジ継手の一実
施例であり、（ａ）は縦断面図、（ｂ）は使用状態の縦
断面図、（ｃ）は（ｂ）のｃーｃ線視図である。1 is an embodiment of a flange joint for different diameter steel pipes according to the present invention, (a) is a vertical sectional view, (b) is a vertical sectional view in use, (c) is (c) of (b) FIG.
【図２】送電用鉄塔における異径の鋼管主柱材の接合部
を示す正面図である。FIG. 2 is a front view showing a joint portion of steel pipe main pillar materials of different diameters in a power transmission tower.
【図３】従来の異径鋼管用のフランジ継手を示す縦断面
図である。FIG. 3 is a vertical cross-sectional view showing a conventional flange joint for different diameter steel pipes.
１…異径鋼管用フランジ継手 １ａ…基部リング １ｂ…フランジ部 １ｃ…フランジ付け根部 １ｄ…基端部 １ｅ…接合段部 １ｆ…接合用ボルト孔 ２…通常のフランジ継手 ２ａ…基部リング ２ｂ…フランジ継手 ２ｃ…フランジ付け根部 ２ｄ…基端部 ２ｅ…接合段部 ２ｆ…接合用ボルト孔 ３…補強リブ 1 ... Flange Joint for Different Diameter Steel Pipe 1a ... Base Ring 1b ... Flange 1c ... Flange Root 1d ... Base End 1e ... Joining Step 1f ... Joining Bolt Hole 2 ... Normal Flange Joint 2a ... Base Ring 2b ... Flange Joint 2c ... Flange root 2d ... Base end 2e ... Joining step 2f ... Bolt hole for joining 3 ... Reinforcing rib
Claims (1)
状の基部リングと、この基部リングの先端から半径方向
外側に一体的に突出するフランジ部とからなるフランジ
継手において、 基部リングのフランジ付け根部を基部リングの基端側よ
りも小径とし、基部リングの形状を基端側に向かって拡
がる逆円錐台リング状としたことを特徴とする異径鋼管
用フランジ継手。1. A flange joint comprising a substantially cylindrical base ring whose base end is connected to an end of a steel pipe, and a flange part which integrally projects radially outward from the tip of the base ring, the base part comprising: A flange joint for different diameter steel pipes, wherein the flange root portion of the ring has a smaller diameter than the base end side of the base ring, and the base ring has a shape of an inverted truncated cone that widens toward the base end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04731596A JP3513311B2 (en) | 1996-03-05 | 1996-03-05 | Flange joints for joining different diameter steel pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04731596A JP3513311B2 (en) | 1996-03-05 | 1996-03-05 | Flange joints for joining different diameter steel pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09242196A true JPH09242196A (en) | 1997-09-16 |
| JP3513311B2 JP3513311B2 (en) | 2004-03-31 |
Family
ID=12771863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04731596A Expired - Fee Related JP3513311B2 (en) | 1996-03-05 | 1996-03-05 | Flange joints for joining different diameter steel pipes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3513311B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015060113A1 (en) * | 2013-10-24 | 2017-03-09 | 住友電装株式会社 | Shield connector |
-
1996
- 1996-03-05 JP JP04731596A patent/JP3513311B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015060113A1 (en) * | 2013-10-24 | 2017-03-09 | 住友電装株式会社 | Shield connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3513311B2 (en) | 2004-03-31 |
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