JP2012158940A - Steel pipe pole and method for manufacturing the same - Google Patents
Steel pipe pole and method for manufacturing the same Download PDFInfo
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- JP2012158940A JP2012158940A JP2011020268A JP2011020268A JP2012158940A JP 2012158940 A JP2012158940 A JP 2012158940A JP 2011020268 A JP2011020268 A JP 2011020268A JP 2011020268 A JP2011020268 A JP 2011020268A JP 2012158940 A JP2012158940 A JP 2012158940A
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Abstract
Description
本発明は、道路を照明する灯具と、該灯具を支持する鋼管柱とを有する鋼管ポールおよびその製造方法に関する。 The present invention relates to a steel pipe pole having a lamp that illuminates a road, and a steel pipe column that supports the lamp, and a method for manufacturing the same.
具体的には、例えば、街灯、信号などに用いる円形鋼管を使用した鋼管ポールおよびその製造方法に関する。 Specifically, for example, the present invention relates to a steel pipe pole using a circular steel pipe used for street lights, signals, and the like, and a method for manufacturing the same.
街灯、信号などに用いる円形鋼管を使用した鋼管ポールは、電気部品等を収納するための開口部とを有している。 A steel pipe pole using a circular steel pipe used for street lights, signals, etc. has an opening for storing electrical parts and the like.
鋼管ポールに関しては従来から種々の提案がなされており、例えば、下記特許文献１には、道路を照明する灯具と、該灯具に電源を供給するソーラーパネルとマイクロ風力発電機を有する鋼管ポールであって、前記ソーラーパネルとマイクロ風力発電機から供給される電源により充電する携帯用非常灯を設置した非常灯ボックスを有することにより、悪天候の場合や、地震などにより電池が破損した場合でも鋼管ポールから離れた道路、事故車両、被災者などを照明することができる鋼管ポールが記載されている。 Various proposals have been made regarding steel pipe poles. For example, Patent Document 1 listed below discloses a steel pipe pole having a lamp that illuminates a road, a solar panel that supplies power to the lamp, and a micro wind power generator. By having an emergency light box equipped with a portable emergency light that is charged by the power supplied from the solar panel and the micro wind power generator, even if the battery is damaged due to bad weather or earthquake, the steel tube pole can Steel pipe poles that can illuminate remote roads, accident vehicles, victims, etc. are described.
しかし、特許文献１に記載された従来の鋼管ポールは、灯具の電気部品等を設置して操作するため、鋼管柱の下部の外周に設けられた開口部の補強部材を溶接するので疲労破断の原因となり得るうえ、補強部材が鋼管柱の外周に突出するため外観を損ねるという問題点があった。 However, since the conventional steel tube pole described in Patent Document 1 is installed and operated for electric parts of the lamp, the reinforcing member of the opening provided on the outer periphery of the lower portion of the steel tube column is welded, so that fatigue fracture In addition to being a cause, there is a problem in that the appearance of the reinforcing member is impaired because the reinforcing member protrudes from the outer periphery of the steel pipe column.
本発明は、前述のような従来技術の問題点を解決し、鋼管柱の下部の外周に設けられた開口部の補強部材を溶接する必要がなく、補強部材が鋼管柱の外周に突出していない美観に優れた鋼管ポールおよびその製造方法を提供することを課題とする。 The present invention solves the problems of the prior art as described above, and it is not necessary to weld the reinforcing member of the opening provided on the outer periphery of the lower part of the steel pipe column, and the reinforcing member does not protrude to the outer periphery of the steel pipe column. It is an object of the present invention to provide a steel pipe pole excellent in aesthetics and a method for manufacturing the same.
本発明は、前述の課題を解決するために、鋼管柱の下部の外周に設けられた開口部の補強構造を鋭意検討の結果なされたものであり、その要旨とするところは特許請求の範囲に記載した通りの下記内容である。
（１）道路を照明する灯具と、該灯具を支持する鋼管柱とを有する鋼管ポールであって、前記鋼管柱の下部の外周に開口部を有し、該開口部の内側に固定された鋼管からなる補強管を有することを特徴とする鋼管ポール。
（２）（１）に記載の鋼管ポールの製造方法であって、前記鋼管柱の内側に前記補強管を挿入して加熱した後に、絞り加工を施して該鋼管柱の外径を縮減させることにより、前記鋼管柱と補強管とを固定することを特徴とする鋼管ポールの製造方法。
In order to solve the above-mentioned problems, the present invention has been made as a result of intensive studies on the reinforcement structure of the opening provided on the outer periphery of the lower part of the steel pipe column, and the gist of the invention is within the scope of the claims. It is the following contents as described.
(1) A steel pipe pole having a lamp for illuminating a road and a steel pipe column that supports the lamp, the steel pipe having an opening at the outer periphery of the lower part of the steel pipe column, and being fixed inside the opening A steel pipe pole having a reinforcing pipe made of
(2) The method for manufacturing a steel pipe pole according to (1), wherein after the reinforcing pipe is inserted and heated inside the steel pipe column, the outer diameter of the steel pipe column is reduced by drawing. The steel pipe pole and the reinforcing pipe are fixed by the method of manufacturing a steel pipe pole.
＜作用＞
（１）の発明の鋼管ポールによれば、鋼管柱の下部の外周に開口部を有し、該開口部の内側に固定された鋼管からなる補強管を有するため、開口部の補強部材の溶接部が必要がないので疲労強度が高いうえ、補強部材が鋼管柱の外周に突出していないため美観に優れている。
（２）の発明の鋼管ポールの製造方法によれば、鋼管柱の内側に前記補強管を挿入して加熱した後に、絞り加工を施して該鋼管柱の外径を縮減させるため、開口部の補強部材の溶接が必要がないので疲労強度が高いうえ、補強部材が鋼管柱の外周に突出していないため美観に優れた鋼管ポールの製造コストを低減することができる。
<Action>
According to the steel pipe pole of the invention of (1), since it has an opening on the outer periphery of the lower part of the steel pipe column and has a reinforcing pipe made of a steel pipe fixed inside the opening, the welding of the reinforcing member of the opening Since no part is required, the fatigue strength is high, and the reinforcing member does not protrude from the outer periphery of the steel pipe column, so it is excellent in appearance.
According to the method for manufacturing a steel pipe pole of the invention of (2), after the reinforcing pipe is inserted and heated inside the steel pipe column, the drawing is performed to reduce the outer diameter of the steel pipe column. Since it is not necessary to weld the reinforcing member, the fatigue strength is high, and the reinforcing member does not protrude from the outer periphery of the steel pipe column, so that the manufacturing cost of the steel pipe pole excellent in aesthetics can be reduced.
本発明によれば、鋼管柱の下部の外周に設けられた開口部の補強部材を溶接する必要がなく、補強部材が鋼管柱の外周に突出していない美観に優れた鋼管ポールおよびその製造方法を提供することができ、産業上有用な著しい効果を奏する。 According to the present invention, there is no need to weld a reinforcing member of an opening provided on the outer periphery of the lower part of the steel pipe column, and the steel pipe pole excellent in aesthetics and the manufacturing method thereof in which the reinforcing member does not protrude on the outer periphery of the steel pipe column. It can be provided and has a significant industrially useful effect.
発明を実施するための最良の形態について、図１〜図３を用いて詳細に説明する。図１は、従来の鋼管ポールを例示する図である。図１において、１は灯具、２は鋼管柱、３は開口部、４は制御ボックスを示す。 The best mode for carrying out the invention will be described in detail with reference to FIGS. FIG. 1 is a diagram illustrating a conventional steel pipe pole. In FIG. 1, 1 is a lamp, 2 is a steel pipe column, 3 is an opening, and 4 is a control box.
図１に示すように、従来の鋼管ポールは、道路を照明する灯具１と、該灯具１を支持する鋼管柱２とを有し、灯具１の接続端子とブレーカーを有する制御ボックス等を設置して操作するため、鋼管柱２の下部の外周に開口部３が設けられており、その開口部３の補強部材を溶接していたので疲労破断の原因となり得るうえ、補強部材を鋼管柱２の外周に５０ｍｍ程度突出させることによって断面二次モーメントを高める必要があり、外観を損ねるという問題点があった。 As shown in FIG. 1, a conventional steel pipe pole has a lamp 1 that illuminates a road, and a steel pipe column 2 that supports the lamp 1, and a control box having a connection terminal of the lamp 1 and a breaker is installed. Since the opening 3 is provided on the outer periphery of the lower portion of the steel pipe column 2 and the reinforcing member of the opening 3 is welded, it can cause fatigue fracture, and the reinforcing member is attached to the steel pipe column 2. By projecting about 50 mm to the outer periphery, it is necessary to increase the secondary moment of section, and there is a problem that the appearance is impaired.
図２は、本発明の鋼管ポールの実施形態を例示する斜視図であり、図３はその横断面図である。 FIG. 2 is a perspective view illustrating an embodiment of the steel pipe pole of the present invention, and FIG. 3 is a cross-sectional view thereof.
本発明の鋼管ポールは、道路を照明する灯具１と、該灯具１を支持する鋼管柱２とを有する鋼管ポールであって、前記鋼管柱２の下部の外周に開口部３を有し、該開口部３の内側に固定された鋼管からなる補強管５を有することを特徴とする。 The steel pipe pole of the present invention is a steel pipe pole having a lamp 1 that illuminates a road and a steel pipe column 2 that supports the lamp 1, and has an opening 3 on the outer periphery of the lower portion of the steel pipe column 2, It has the reinforcement pipe | tube 5 which consists of a steel pipe fixed inside the opening part 3. It is characterized by the above-mentioned.
即ち、従来の開口部３の補強部材の代わりに、開口部３の内側に固定された鋼管からなる補強管５を設けることによって、鋼管柱３の下部の外周に設けられた開口部の補強部材を溶接する必要がなく、補強部材が鋼管柱３の外周に突出していない美観に優れた鋼管ポールを提供することができる。 That is, instead of the conventional reinforcing member of the opening 3, a reinforcing tube 5 made of a steel pipe fixed inside the opening 3 is provided, whereby the reinforcing member of the opening provided on the outer periphery of the lower portion of the steel pipe column 3 is provided. Therefore, it is possible to provide a steel pipe pole excellent in aesthetic appearance in which the reinforcing member does not protrude from the outer periphery of the steel pipe column 3.
本発明に用いる補強管５は、開口部３をカバーする範囲に設ければよいが、好ましくは、補強管５の長さを開口部３の長さＬより鋼管柱の外径Ｄの２倍以上長くするとともに、補強管５の板厚を厚くすることにより補強効果を高めることができるうえ、溶接が必要ないので疲労強度を向上させることができる。 The reinforcing tube 5 used in the present invention may be provided in a range covering the opening 3, but preferably the length of the reinforcing tube 5 is twice the outer diameter D of the steel pipe column than the length L of the opening 3. In addition to increasing the length, the reinforcing effect can be enhanced by increasing the plate thickness of the reinforcing tube 5, and the fatigue strength can be improved because welding is not required.
図３に示すように、本発明に用いる補強管５の中心軸は、鋼管柱２の中心軸と一致し、補強管５の外径は、鋼管柱２の内径と一致させているので、補強管５と鋼管柱５とが固定される。 As shown in FIG. 3, the central axis of the reinforcing pipe 5 used in the present invention coincides with the central axis of the steel pipe column 2, and the outer diameter of the reinforcing pipe 5 coincides with the inner diameter of the steel pipe column 2. The pipe 5 and the steel pipe column 5 are fixed.
本発明の鋼管ポールの製造方法は、前記鋼管柱３の内側に前記補強管５を挿入して加熱した後に、絞り加工を施して該鋼管柱３の外径を縮減させることにより、前記鋼管柱３と補強管５とを固定することにより、鋼管柱３の下部の外周に設けられた開口部の補強部材を溶接する必要がなく、補強部材が鋼管柱３の外周に突出していない美観に優れた鋼管ポールを安価に製造することができる。 In the method of manufacturing a steel pipe pole according to the present invention, after the reinforcing pipe 5 is inserted and heated inside the steel pipe column 3, the steel pipe column 3 is reduced by reducing the outer diameter of the steel pipe column 3 by drawing. By fixing 3 and the reinforcing pipe 5, it is not necessary to weld the reinforcing member of the opening provided in the outer periphery of the lower part of the steel pipe column 3, and it is excellent in aesthetics that the reinforcing member does not protrude from the outer periphery of the steel pipe column 3. Steel pipe poles can be manufactured at low cost.
本発明においては、前記絞り加工の方法は問わないが、前記鋼管柱３の内側に前記補強管５を挿入して高周波加熱により６００〜７００℃に加熱した後に、鋼管柱３の外周に複数の加工ロールを押付けて回転させる温間スピニング成形加工を用いて鋼管柱３と補強管５とを焼き嵌めながら縮径することによって一定厚のまま加工することができるので、断面性能を損なうことなく自在なテーパー形状の鋼管柱３を安価に製造することができる。 In the present invention, the drawing method is not limited, but after the reinforcing pipe 5 is inserted inside the steel pipe column 3 and heated to 600 to 700 ° C. by high frequency heating, a plurality of pipes are formed on the outer periphery of the steel pipe column 3. Since it can be processed with a constant thickness by shrinking the steel tube column 3 and the reinforcing tube 5 by shrink fitting using a warm spinning forming process in which the processing roll is pressed and rotated, it is free without impairing the cross-sectional performance. A taper-shaped steel pipe column 3 can be manufactured at low cost.
図２〜図３に示す本発明の鋼管ポールを下記条件で実施した。
＜実施条件＞
・鋼管柱下部の外径Ｄ ：１９０ｍｍ、板厚：５．８ｍｍ
・鋼管柱先端部の外径Ｄ´： ７５ｍｍ、板厚：５．８ｍｍ
・開口部長さＬ ：６００ｍｍ
・開口部加工方法 ：機械加工
・ 補強管の長さ ：１０００ｍｍ、板厚：６．０ｍｍ
The steel pipe pole of this invention shown in FIGS. 2-3 was implemented on the following conditions.
<Conditions for implementation>
-Outer diameter D of steel pipe column lower part: 190 mm, plate thickness: 5.8 mm
-Outer diameter D 'of steel pipe column tip: 75 mm, plate thickness: 5.8 mm
-Opening length L: 600 mm
-Opening processing method: machining-length of reinforcing tube: 1000 mm, plate thickness: 6.0 mm
その結果、、鋼管柱の下部の外周に設けられた開口部の補強部材を溶接する必要がなく、補強部材が鋼管柱の外周に突出していない美観に優れた鋼管ポールおよびその製造方法を提供することができ、本発明の効果が確認された。 As a result, there is no need to weld a reinforcing member of an opening provided on the outer periphery of the lower part of the steel pipe column, and a steel pipe pole excellent in aesthetics in which the reinforcing member does not protrude on the outer periphery of the steel pipe column and a manufacturing method thereof are provided. The effect of the present invention was confirmed.
本発明の鋼管ポールは、実施計画中であり、美観に優れているため、今後、幅広い地方公共団体への適用拡大が期待される。 Since the steel pipe pole of the present invention is being planned and is excellent in aesthetics, it is expected to expand its application to a wide range of local governments in the future.
１ 灯具
２ 鋼管柱
３ 開口部
４ 制御ボックス
５ 補強管
DESCRIPTION OF SYMBOLS 1 Lamp 2 Steel pipe pillar 3 Opening part 4 Control box 5 Reinforcement pipe
Claims (2)
The method of manufacturing a steel pipe pole according to claim 1, wherein after the reinforcing pipe is inserted and heated inside the steel pipe column, the outer diameter of the steel pipe column is reduced by applying a drawing process. A method of manufacturing a steel pipe pole, comprising fixing a steel pipe column and a reinforcing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011020268A JP2012158940A (en) | 2011-02-02 | 2011-02-02 | Steel pipe pole and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011020268A JP2012158940A (en) | 2011-02-02 | 2011-02-02 | Steel pipe pole and method for manufacturing the same |
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| Publication Number | Publication Date |
|---|---|
| JP2012158940A true JP2012158940A (en) | 2012-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011020268A Pending JP2012158940A (en) | 2011-02-02 | 2011-02-02 | Steel pipe pole and method for manufacturing the same |
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| Country | Link |
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| JP (1) | JP2012158940A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136994A (en) * | 1992-10-28 | 1994-05-17 | Matsushita Electric Works Ltd | Column structure body reinforcing structure |
| US5436811A (en) * | 1992-02-12 | 1995-07-25 | Hecking; Dirck J. | Pole assembly and methods thereof |
| JP2001032571A (en) * | 1999-07-22 | 2001-02-06 | Nippon Steel Corp | Long-sized metallic pole erected on ground |
| JP2005023546A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Metal Steel Products Inc | Metal pipe strut |
| JP2005256587A (en) * | 2004-03-12 | 2005-09-22 | Yoshimoto Pole Co Ltd | Circular pipe opening part structure |
| US20080078141A1 (en) * | 2006-09-29 | 2008-04-03 | James Mitchell | Reinforced pole structure |
-
2011
- 2011-02-02 JP JP2011020268A patent/JP2012158940A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5436811A (en) * | 1992-02-12 | 1995-07-25 | Hecking; Dirck J. | Pole assembly and methods thereof |
| JPH06136994A (en) * | 1992-10-28 | 1994-05-17 | Matsushita Electric Works Ltd | Column structure body reinforcing structure |
| JP2001032571A (en) * | 1999-07-22 | 2001-02-06 | Nippon Steel Corp | Long-sized metallic pole erected on ground |
| JP2005023546A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Metal Steel Products Inc | Metal pipe strut |
| JP2005256587A (en) * | 2004-03-12 | 2005-09-22 | Yoshimoto Pole Co Ltd | Circular pipe opening part structure |
| US20080078141A1 (en) * | 2006-09-29 | 2008-04-03 | James Mitchell | Reinforced pole structure |
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