JP2021178342A - Joint fixing method and joint fixing structure of pipe diagonal material - Google Patents

Joint fixing method and joint fixing structure of pipe diagonal material Download PDF

Info

Publication number
JP2021178342A
JP2021178342A JP2020084242A JP2020084242A JP2021178342A JP 2021178342 A JP2021178342 A JP 2021178342A JP 2020084242 A JP2020084242 A JP 2020084242A JP 2020084242 A JP2020084242 A JP 2020084242A JP 2021178342 A JP2021178342 A JP 2021178342A
Authority
JP
Japan
Prior art keywords
pipe
base material
pair
parallel
pipe diagonal
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
Application number
JP2020084242A
Other languages
Japanese (ja)
Inventor
好孝 土田
Yoshitaka Tsuchida
伸洋 清水
Nobuhiro Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alinco Inc
Original Assignee
Alinco Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alinco Inc filed Critical Alinco Inc
Priority to JP2020084242A priority Critical patent/JP2021178342A/en
Publication of JP2021178342A publication Critical patent/JP2021178342A/en
Pending legal-status Critical Current

Links

Images

Abstract

To provide a joint fixing method and a joint fixing structure for welding an end of the pipe diagonal material onto a surface of a pipe base material in the state regarding the metal pipe base material having a circular cross section and the pipe diagonal material where axes of the base material and the diagonal material are mutually tilted by a predetermined angle.SOLUTION: A joint fixing method comprises: a forming step of forming a pair of flat plate parts (6), (6) which is flat and arranged substantially in parallel to each other, by pressing and deforming peripheral wall parts, radially facing each other, of an end part of a pipe diagonal member (3) toward the center; a cutting step of forming a pair of parallel joint pieces (10) (10) on a base part side by cutting and separating a tip side of the pair of flat plate parts (6), (6) along a reference line (L) that intersects an axis (Ab) of the pipe diagonal member (3) at a predetermined angle θ; and a welding step of welding tip edge parts (10a) of the parallel joint pieces onto a surface of a pipe base material (2) in a state where the pair of parallel joint pieces (10) (10) is arranged in parallel with an axis (Aa) of the pipe base material (2).SELECTED DRAWING: Figure 4

Description

本発明は、断面円形とされた金属製のパイプ基材とパイプ斜材を溶接により接合する接合固着方法及び接合固着構造に関する。 The present invention relates to a joining fixing method and a joining fixing structure for joining a metal pipe base material having a circular cross section and a pipe diagonal member by welding.

断面円形とされた金属製のパイプ基材とパイプ斜材を使用し、基材と斜材の軸線を相互に所定角度θだけ傾斜させた状態で、パイプ斜材の端部をパイプ基材の表面に溶接により接合固着した部品や製品が提供されている。 Using a metal pipe base material with a circular cross section and a pipe diagonal material, the end of the pipe diagonal material is attached to the pipe base material with the axes of the base material and the diagonal material tilted by a predetermined angle θ. Parts and products that are joined and fixed to the surface by welding are provided.

例えば、図１（Ａ）に示すような足場用梁枠１は、平行に水平配置された上弦材２ａと下弦材２ｂと、上下弦材２ａ、２ｂの間に介設された斜材３により形成されている。 For example, the scaffolding beam frame 1 as shown in FIG. 1 (A) is composed of the upper chord member 2a and the lower chord member 2b arranged horizontally in parallel, and the diagonal member 3 interposed between the upper and lower chord members 2a and 2b. It is formed.

上弦材２ａ及び下弦材２ｂは、断面円形とされた金属製のパイプ基材２を構成し、斜材３は、断面円形とされた金属製のパイプ斜材３を構成する。 The upper chord member 2a and the lower chord member 2b constitute a metal pipe base material 2 having a circular cross section, and the diagonal member 3 constitutes a metal pipe diagonal member 3 having a circular cross section.

図１（Ｂ）に示すように、パイプ基材２の軸線Ａａと、斜材３の軸線Ａｂは、相互に所定角度θだけ傾斜させられ、パイプ斜材３の両端部をパイプ基材２の表面に溶接により接合固着されている。 As shown in FIG. 1B, the axis Aa of the pipe base material 2 and the axis Ab of the diagonal member 3 are inclined to each other by a predetermined angle θ, and both ends of the pipe diagonal member 3 are formed on the pipe base material 2. It is joined and fixed to the surface by welding.

特許第５１１４２９２号公報Japanese Patent No. 5141292

上述したようなパイプ斜材３の端部をパイプ基材２の表面に溶接により接合固着する方法に関して、現在まで本出願人が実施してきた接合固着方法を図２に示し、該方法により得られた接合固着構造を図３に示すことにより、以下、本発明に対する「比較例」として説明する。 Regarding the method of joining and fixing the end portion of the pipe diagonal member 3 to the surface of the pipe base material 2 by welding as described above, FIG. By showing the bonded and fixed structure in FIG. 3, the present invention will be described below as a “comparative example”.

（溝の形成工程）
図２（Ａ）に示すように、パイプ斜材３は、所定長さに裁断された鉄製又は鋼製の丸パイプ素材が使用され、両端部の周縁部のうち直径方向に対向する２個所から切り込み状の溝４ａ、４ｂが形成される。 (Groove formation process)
As shown in FIG. 2A, the pipe diagonal member 3 is made of a round pipe material made of iron or steel cut to a predetermined length, and is formed from two peripheral portions of both ends facing each other in the diameter direction. Notched grooves 4a and 4b are formed.

この際、パイプ斜材３の端部近傍に臨んで、該斜材３の軸線Ａｂに前記角度θで交差する基準線Ｌが仮想設定される。つまり、基準線Ｌにより、接合固着されるべきパイプ基材２の表面に沿う軸線と平行なラインが仮想され設定される、 At this time, a reference line L that faces the vicinity of the end of the pipe diagonal member 3 and intersects the axis line Ab of the diagonal member 3 at the angle θ is virtually set. That is, a line parallel to the axis along the surface of the pipe base material 2 to be joined and fixed is virtually set by the reference line L.

そこで、パイプ斜材３の各端部における周縁部のうち、円周方向に関して基準線Ｌに臨んで位置する周縁部の部位から、該基準線Ｌを超える深さ位置まで切り込みが切削され、これにより、深い長溝４ａと、浅い短溝４ｂが形成される。 Therefore, among the peripheral edges at each end of the pipe diagonal member 3, a notch is cut from the peripheral edge portion located facing the reference line L in the circumferential direction to a depth position exceeding the reference line L. As a result, a deep long groove 4a and a shallow short groove 4b are formed.

（接合片の形成工程）
その後、図２（Ｂ）に示すように、パイプ斜材３の端部は、前記溝４ａ、４ｂを挟んで両側に位置する周壁部３ａ、３ａを押圧変形され、前記基準線Ｌと平行に切断される。これにより、パイプ斜材３の端部に、断面を扁平なほぼ楕円形とされた接合片５が成形され、該接合片５の先端には該斜材３の軸線Ａｂに対して前記角度θで傾斜する傾斜縁部５ａが形成される。 (Step of forming joint pieces)
After that, as shown in FIG. 2B, the end portion of the pipe diagonal member 3 is deformed by pressing the peripheral wall portions 3a and 3a located on both sides of the grooves 4a and 4b, and is parallel to the reference line L. Be disconnected. As a result, a joint piece 5 having a flat and substantially elliptical cross section is formed at the end of the pipe diagonal member 3, and the angle θ at the tip of the joint piece 5 with respect to the axis Ab of the diagonal member 3. An inclined edge portion 5a inclined at is formed.

（溶接工程）
図２（Ｃ）に示すように、パイプ斜材３は、パイプ基材２に対して前記角度θだけ傾斜させた状態で、接合片５の傾斜縁部５ａをパイプ基材２の表面に長手軸線に沿って臨ませ、アーク溶接等の溶接により接合固着される。 (Welding process)
As shown in FIG. 2C, in a state where the pipe diagonal member 3 is inclined by the angle θ with respect to the pipe base material 2, the inclined edge portion 5a of the joint piece 5 is longitudinally formed on the surface of the pipe base material 2. It faces along the axis and is joined and fixed by welding such as arc welding.

上記の比較例の場合、パイプ斜材３の端部に設けられた接合片５、５は、図３（Ｂ）に示すように、全体的に偏平に近い形状とされているが、断面形状がほぼ楕円形に形成されている。その結果、傾斜縁部５ａ、５ａは、パイプ基材２の表面の上で、長手方向（軸線Ａａの方向）に関しては、概ね沿わせられるが、周方向に（軸線Ａａと交差する円周方向）に関しては、図２（Ｃ）及び図３（Ｃ）に示すように、パイプ基材２の表面と傾斜縁部５ａの間に大きな隙間ＬＧが生じることになる。 In the case of the above comparative example, the joint pieces 5 and 5 provided at the end of the pipe diagonal member 3 have a shape close to flat as a whole as shown in FIG. 3 (B), but have a cross-sectional shape. Is formed in an almost elliptical shape. As a result, the inclined edge portions 5a and 5a are generally aligned along the surface of the pipe base material 2 in the longitudinal direction (direction of the axis Aa), but in the circumferential direction (circumferential direction intersecting the axis Aa). ), As shown in FIGS. 2C and 3C, a large gap LG is formed between the surface of the pipe base material 2 and the inclined edge portion 5a.

このため、前記隙間ＬＧを溶接材Ｗで埋めるように溶接する必要があり、これが溶接作業の煩雑化と溶接作業の長時間化の原因となる。しかも、溶接材Ｗの消費量が大きくコスト高の原因となる。更に、溶接時間の長時間化は、熱影響による母材（パイプ斜材とパイプ基材の溶接近傍部）の劣化を招来する問題がある。 Therefore, it is necessary to perform welding so as to fill the gap LG with the welding material W, which causes the welding work to be complicated and the welding work to be lengthened. Moreover, the consumption of the welding material W is large, which causes a high cost. Further, a long welding time has a problem of causing deterioration of the base material (a portion near the welding of the pipe diagonal material and the pipe base material) due to the influence of heat.

以上に鑑み、本発明は、上記問題を解決したパイプ斜材の接合固着方法及び接合固着構造を提供することを課題としている。 In view of the above, it is an object of the present invention to provide a method for joining and fixing a pipe diagonal member and a joining and fixing structure that solves the above problems.

そこで、本発明の接合固着方法が手段として構成したところは、それぞれ断面円形とされた金属製のパイプ基材とパイプ斜材に関して、基材と斜材の軸線を相互に所定角度θだけ傾斜させた状態で、パイプ斜材の端部をパイプ基材の表面に溶接により接合固着する方法であり、パイプ斜材の端部の径方向に対向する周壁部を中心に向けて押圧変形することにより、中心を挟んでほぼ平行に並ぶ一対の平板部を形成する成形工程と、パイプ斜材の軸線に対して前記角度θで交差する基準線に沿って、前記一対の平板部の先端側を切断分離することにより、分離されずに残存した平板部の基部側により一対の平行接合片を形成する切断工程と、前記一対の平行接合片をパイプ基材の軸線と平行に配置して該平行接合片の先端部をパイプ基材の表面に溶接する溶接工程とから成る点にある。 Therefore, where the joining and fixing method of the present invention is configured as a means, the axes of the base material and the diagonal material are mutually inclined by a predetermined angle θ with respect to the metal pipe base material and the pipe diagonal material having a circular cross section, respectively. In this state, the end of the pipe diagonal is joined and fixed to the surface of the pipe base material by welding, and the peripheral wall facing the end of the pipe diagonal in the radial direction is pressed and deformed toward the center. , The tip side of the pair of flat plates is cut along a reference line that intersects the axis of the pipe diagonal member at the angle θ with the molding step of forming a pair of flat plates that are arranged substantially parallel to each other with the center in between. By separating, a cutting step of forming a pair of parallel joint pieces by the base side of the flat plate portion remaining without being separated, and the parallel joint by arranging the pair of parallel joint pieces in parallel with the axis of the pipe base material. The point is that it consists of a welding process in which the tip of the piece is welded to the surface of the pipe base material.

この際、前記切断工程の後又は同時に、一対の平行接合片の先端縁部における外側縁部を除去する開先加工を実施することが好ましい。 At this time, it is preferable to carry out groove processing for removing the outer edge portion of the tip edge portion of the pair of parallel joint pieces after or at the same time as the cutting step.

また、本発明の接合固着構造が手段として構成したところは、それぞれ断面円形とされた金属製のパイプ基材とパイプ斜材に関して、基材と斜材の軸線を相互に所定角度θだけ傾斜させた状態で、パイプ斜材の端部をパイプ基材の表面に溶接して成るパイプ斜材の接合固着構造であり、パイプ斜材の端部には一対の平行接合片が形成され、該平行接合片をパイプ基材の軸線と平行に配置して先端縁部をパイプ基材の表面に溶接しており、前記一対の平行接合片は、パイプ斜材の端部の径方向に対向する周壁部を中心に向けて押圧変形した一対の平板部により形成され、該平行接合片の先端縁部は、前記平板部をパイプ斜材の軸線に対して前記角度θで交差する基準線に沿って切断分離した切断端により形成されて成る点にある。 Further, where the joint fixing structure of the present invention is configured as a means, the axes of the base material and the diagonal material are mutually inclined by a predetermined angle θ with respect to the metal pipe base material and the pipe diagonal material having a circular cross section, respectively. In this state, the end of the pipe diagonal is welded to the surface of the pipe base material to form a joint fixing structure for the pipe diagonal. A pair of parallel joint pieces are formed at the end of the pipe diagonal, and the parallel joint pieces are formed. The joint pieces are arranged parallel to the axis of the pipe base material, and the tip edge portion is welded to the surface of the pipe base material. It is formed by a pair of flat plate portions that are pressed and deformed toward the center, and the tip edge portion of the parallel joint piece is along a reference line that intersects the flat plate portion with the axis of the pipe diagonal member at the angle θ. It is a point formed by cut ends separated by cutting.

この際、前記一対の平行接合片の先端縁部は、外側縁部が面取り状に除去されていることが好ましい。 At this time, it is preferable that the outer edge portion of the tip edge portion of the pair of parallel joint pieces is chamfered off.

本発明によれば、パイプ斜材３の平行接合片１０、１０がフラットな平板状に形成され、先端縁部１０ａがパイプ基材２の軸線Ａａと平行な直線として延びるように形成されているので、長手方向（軸線Ａａの方向）と、周方向に（軸線Ａａと交差する円周方向）の何れの方向に関しても、比較例のような大きな隙間を生じることがなく、先端縁部１０ａをパイプ基材２の表面に当接させ又は近接させることができる。これにより、溶接作業が簡単容易で、自動化に適し、短時間での迅速な溶接が可能となる。しかも、溶接材Ｗの消費量が比較的少ないので低コスト化が可能であり、更に、溶接時間を短時間化することができるので、熱影響による母材（パイプ斜材とパイプ基材の溶接近傍部）の劣化を招来するおそれもない。 According to the present invention, the parallel joint pieces 10 and 10 of the pipe diagonal member 3 are formed in a flat flat plate shape, and the tip edge portion 10a is formed so as to extend as a straight line parallel to the axis Aa of the pipe base material 2. Therefore, in either the longitudinal direction (direction of the axis Aa) or the circumferential direction (circumferential direction intersecting the axis Aa), a large gap as in the comparative example is not generated, and the tip edge portion 10a is formed. It can be brought into contact with or close to the surface of the pipe base material 2. This makes welding work easy and easy, suitable for automation, and enables quick welding in a short time. Moreover, since the consumption of the welding material W is relatively small, the cost can be reduced, and the welding time can be shortened, so that the base material (welding of the pipe diagonal material and the pipe base material) due to the heat effect can be shortened. There is no risk of causing deterioration in the vicinity).

本発明が実施される製品の１例としての足場用梁枠を示しており、（Ａ）は足場用梁枠の正面図、（Ｂ）は接合固着されたパイプ基材とパイプ斜材を部分的に示す拡大斜視図である。A scaffolding beam frame as an example of a product in which the present invention is carried out is shown, (A) is a front view of the scaffolding beam frame, and (B) is a portion of a pipe base material and a pipe diagonal member bonded and fixed. It is an enlarged perspective view which shows. 比較例に係るパイプ斜材の接合固着方法を示しており、（Ａ）は溝の形成工程を示す斜視図、（Ｂ）は接合片の形成工程を示す斜視図、（Ｃ）は溶接工程を示す斜視図である。A method of joining and fixing pipe diagonal members according to a comparative example is shown, (A) is a perspective view showing a groove forming process, (B) is a perspective view showing a joining piece forming process, and (C) is a welding process. It is a perspective view which shows. 比較例に係るパイプ斜材の接合固着構造を示しており、（Ａ）は正面図、（Ｂ）はＡ−Ａ断面図、（Ｃ）側断面図である。The joint fixing structure of the pipe diagonal member which concerns on a comparative example is shown, (A) is a front view, (B) is a sectional view AA, (C) side sectional view. 本発明の１実施形態に係るパイプ斜材の接合固着方法を示しており、（Ａ）は溝の形成工程を示す斜視図、（Ｂ）は平板部の成形工程を示す斜視図、（Ｃ）は平行接合片を形成する切断工程を示す斜視図、（Ｄ）は開先加工した接合片を示す拡大斜視図、（Ｅ）は溶接工程を示す斜視図である。A method of joining and fixing pipe diagonal members according to one embodiment of the present invention is shown, (A) is a perspective view showing a groove forming process, (B) is a perspective view showing a flat plate portion forming process, (C). Is a perspective view showing a cutting process for forming a parallel joint piece, (D) is an enlarged perspective view showing a grooved joint piece, and (E) is a perspective view showing a welding process. 各工程におけるパイプ斜材の断面を示しており、（Ａ）は溝の形成工程を経たパイプ斜材の断面図、（Ｂ）は平板部の成形工程中におけるパイプ斜材の断面図、（Ｃ）は切断工程を経たパイプ斜材の断面図、（Ｄ）は開先加工を実施したパイプ斜材の断面図である。The cross section of the pipe diagonal member in each step is shown, (A) is a cross-sectional view of the pipe diagonal member which has undergone the groove forming step, (B) is a sectional view of the pipe diagonal member during the forming process of the flat plate portion, (C). ) Is a cross-sectional view of the pipe diagonal material that has undergone the cutting step, and (D) is a cross-sectional view of the pipe diagonal material that has been grooved. 本発明の１実施形態に係るパイプ斜材の接合固着構造を示しており、（Ａ）は正面図、（Ｂ）はＡ−Ａ断面図、（Ｃ）側断面図、（Ｄ）は部分拡大図である。The joint fixing structure of the pipe diagonal member which concerns on one Embodiment of this invention is shown, (A) is a front view, (B) is a sectional view AA, (C) side sectional view, (D) is a partial enlargement. It is a figure.

以下図面に基づいて、上述した比較例と同様の相互に所定角度θで交差させられるパイプ斜材３の端部をパイプ基材２の表面に溶接する接合固着に関して、本発明の１実施形態に基づく接合固着方法と接合固着構造を説明する。 Based on the following drawings, the present embodiment of the present invention relates to the joint fixing in which the ends of the pipe diagonal members 3 crossed with each other at a predetermined angle θ are welded to the surface of the pipe base material 2 in the same manner as in the above-mentioned comparative example. The joint fixing method and the joint fixing structure based on the above will be described.

（溝の形成工程）
図４（Ａ）及び図５（Ａ）に示すように、パイプ斜材３は、所定長さに裁断された鉄製又は鋼製の丸パイプ素材を使用し、両端部の周縁部のうち直径方向に対向する２個所に切り込み状の溝４ａ、４ｂが形成される。尚、丸パイプ素材は、図示のような断面円形の他、断面楕円形のものでも良い。 (Groove formation process)
As shown in FIGS. 4 (A) and 5 (A), the pipe diagonal member 3 uses a round pipe material made of iron or steel cut to a predetermined length, and is in the radial direction of the peripheral edges of both ends. Notch-shaped grooves 4a and 4b are formed at two positions facing each other. The round pipe material may have an elliptical cross section as well as a circular cross section as shown in the figure.

上述した比較例と同様に、パイプ斜材３の端部近傍に臨んで、該斜材３の軸線Ａｂに前記角度θで交差する基準線Ｌが仮想設定され、パイプ斜材３の両端部には、周縁部のうち、円周方向に関して基準線Ｌに臨む部位から、該基準線Ｌを超える深さ位置まで切り込みが切削され、これにより、深い長溝４ａと、浅い短溝４ｂが形成される。 Similar to the above-mentioned comparative example, a reference line L that faces the vicinity of the end of the pipe diagonal member 3 and intersects the axis Ab of the diagonal member 3 at the angle θ is virtually set, and both ends of the pipe diagonal member 3 are virtually set. Is cut from a portion of the peripheral edge portion facing the reference line L in the circumferential direction to a depth position exceeding the reference line L, whereby a deep long groove 4a and a shallow short groove 4b are formed. ..

（成形工程）
その後、図４（Ｂ）に示すように、パイプ斜材３の端部は、前記溝４ａ、４ｂを挟んで径方向に対向する周壁部３ａ、３ａを中心に向けて押圧変形することにより、中心を挟んでほぼ平行に並ぶ一対のフラットな平板部６、６が形成される。この際、パイプ斜材３の円管部から平板部６に向けて傾斜面を表す狭窄部７が形成される。 (Molding process)
After that, as shown in FIG. 4B, the end portion of the pipe diagonal member 3 is pressed and deformed toward the center of the peripheral wall portions 3a and 3a facing in the radial direction with the grooves 4a and 4b interposed therebetween. A pair of flat flat plate portions 6 and 6 arranged substantially parallel to each other with the center in between are formed. At this time, a narrowed portion 7 representing an inclined surface is formed from the circular pipe portion of the pipe diagonal member 3 toward the flat plate portion 6.

この成形工程は、例えば、図５（Ｂ）に示すように、平板形状のコア型８をパイプ斜材３の端部から一対の溝４ａ、４ｂに亘り挿入した状態で、該溝を挟んで両側位置から、一対のプレス金型９、９により周壁部３ａ、３ａをコア型８に向けてプレスする方法を採用することが可能である。 In this molding step, for example, as shown in FIG. 5B, a flat plate-shaped core mold 8 is inserted from the end of the pipe diagonal member 3 over a pair of grooves 4a and 4b, and the grooves are sandwiched. It is possible to adopt a method of pressing the peripheral wall portions 3a and 3a toward the core mold 8 by a pair of press dies 9 and 9 from both side positions.

例えば、プレス金型９、９は、前記狭窄部７を成形する凹部９ａと、前記平板部６を成形するフラットな平面部９ｂを備えており、コア型８を挟んでプレス金型９、９を挟着することにより、パイプ斜材３の端部に前記狭窄部７と平板部６がプレス成形される。その結果、コア型８の両面とプレス金型９の平面部９ｂの間において、肉厚をほぼ均一とした平らなプレート形状の平板部６、６が成形される。 For example, the press dies 9 and 9 include a recess 9a for forming the narrowed portion 7 and a flat flat surface portion 9b for forming the flat plate portion 6, and the press dies 9 and 9 sandwich the core mold 8. By sandwiching the pipe diagonal member 3, the narrowed portion 7 and the flat plate portion 6 are press-formed at the end of the pipe diagonal member 3. As a result, flat plate-shaped flat plate portions 6 and 6 having a substantially uniform wall thickness are formed between both sides of the core mold 8 and the flat surface portion 9b of the press die 9.

（切断工程）
次いで、成形された平板部６、６は、図４（Ｃ）及び図５（Ｃ）に示すように、前記基準線Ｌに沿って先端側の部分６ａが切断され分離される。これにより、分離されずに残存した平板部６、６の基部側により、先端に平行な直線状の先端縁部１０ａを備えた一対の平行接合片１０、１０が形成される。 (Cutting process)
Next, as shown in FIGS. 4 (C) and 5 (C), the molded flat plate portions 6 and 6 are separated by cutting the portion 6a on the distal end side along the reference line L. As a result, a pair of parallel joint pieces 10 and 10 having a linear tip edge portion 10a parallel to the tip is formed by the base side of the flat plate portions 6 and 6 that remain without being separated.

（開先加工）
好ましくは、前記切断工程の後又は同時に、一対の平行接合片１０、１０の先端縁部１０ａには、外側縁部を面取り状に除去する開先加工が実施され、図４（Ｄ）及び図５（Ｄ）に示すように、先端に開先加工部１１が形成される。 (Groove processing)
Preferably, after or at the same time as the cutting step, the tip edge portion 10a of the pair of parallel joint pieces 10 and 10 is subjected to groove processing for chamfering the outer edge portion, and FIGS. 4 (D) and FIG. As shown in 5 (D), the grooved portion 11 is formed at the tip.

（溶接工程）
図４（Ｅ）に示すように、パイプ斜材３は、パイプ基材２に対して前記角度θだけ傾斜させた状態で、接合片１０の先端縁部１０ａをパイプ基材２の表面に長手軸線に沿って臨ませ、アーク溶接等の溶接により接合固着される。 (Welding process)
As shown in FIG. 4 (E), in a state where the pipe diagonal member 3 is inclined by the angle θ with respect to the pipe base material 2, the tip edge portion 10a of the joint piece 10 is longitudinally formed on the surface of the pipe base material 2. It faces along the axis and is joined and fixed by welding such as arc welding.

（接合固着構造）
パイプ基材２の表面に溶接されたパイプ斜材３の平行接合片１０、１０は、図６（Ｂ）に示すように、パイプ基材２の軸線Ａａと平行な直線として延びるフラットな板状に形成されている。このため、図６に示すように、平行接合片１０、１０の先端縁部１０ａは、長手方向（軸線Ａａの方向）と、周方向に（軸線Ａａと交差する円周方向）の両方向に関して、パイプ基材２の表面に好適に当接され又は近接される。従って、仮に製造誤差が生じたときでも、図６（Ｄ）に示すように、パイプ基材２の表面と先端縁部１０ａの間に生じる隙間は、極めて小さな隙間ＳＧとされる。 (Joint fixation structure)
As shown in FIG. 6B, the parallel joint pieces 10 and 10 of the pipe diagonal member 3 welded to the surface of the pipe base material 2 have a flat plate shape extending as a straight line parallel to the axis Aa of the pipe base material 2. Is formed in. Therefore, as shown in FIG. 6, the tip edge portions 10a of the parallel joint pieces 10 and 10 are provided in both the longitudinal direction (direction of the axis Aa) and the circumferential direction (circumferential direction intersecting the axis Aa). It is suitably abutted or brought close to the surface of the pipe base material 2. Therefore, even if a manufacturing error occurs, as shown in FIG. 6D, the gap generated between the surface of the pipe base material 2 and the tip edge portion 10a is an extremely small gap SG.

このため、溶接作業が簡単容易であり、自動化に適しており、短時間での迅速な溶接が可能となる。しかも、上述の比較例に比して、溶接材Ｗの消費量が小さく低コスト化が可能であり、更に、溶接時間を短時間化することができるので、熱影響による母材（パイプ斜材とパイプ基材の溶接近傍部）の劣化を招来するおそれもない。 Therefore, the welding work is simple and easy, suitable for automation, and quick welding can be performed in a short time. Moreover, compared to the above-mentioned comparative example, the consumption of the welding material W is small, the cost can be reduced, and the welding time can be shortened. And there is no risk of causing deterioration of the welded vicinity of the pipe base material).

平行接合片１０、１０の先端縁部１０ａには開先加工部１１が設けられており、盛金を良好とした開先溶接を可能とする。この点に関し、上述の比較例の場合は、接合片５、５が断面形状をほぼ楕円形とするように湾曲させられているため、傾斜縁部５ａに開先加工を施すことが困難であるのに対し、本発明の実施形態の場合は、平行接合片１０、１０が平板状とされ、先端縁部１０ａを直線形状としているので、簡単容易に開先加工を施すことができるという利点がある。 A groove processing portion 11 is provided on the tip edge portion 10a of the parallel joint pieces 10 and 10, which enables groove welding with good filling. Regarding this point, in the case of the above-mentioned comparative example, since the joint pieces 5 and 5 are curved so as to have a substantially elliptical cross-sectional shape, it is difficult to perform groove processing on the inclined edge portion 5a. On the other hand, in the case of the embodiment of the present invention, since the parallel joint pieces 10 and 10 have a flat plate shape and the tip edge portion 10a has a linear shape, there is an advantage that groove processing can be easily and easily performed. be.

１ 足場用梁枠
２ パイプ基材
２ａ 上弦材
２ｂ 下弦材
３ パイプ斜材
３ａ 周壁
４ 溝
４ａ 長溝
４ｂ 短溝
５ 接合片（比較例）
５ａ 傾斜縁部（比較例）
６ 平板部
６ａ 先端側
７ 狭窄部
８ コア型
９ プレス金型
９ａ 凹部
９ｂ 平面部
１０ 平行接合片
１０ａ 先端縁部
１１ 開先加工部 1 Scaffolding beam frame 2 Pipe base material 2a Upper chord material 2b Lower chord material 3 Pipe diagonal material 3a Peripheral wall 4 Groove 4a Long groove 4b Short groove 5 Joint piece (comparative example)
5a Inclined edge (comparative example)
6 Flat plate 6a Tip side 7 Stenosis 8 Core type 9 Press die 9a Recess 9b Flat surface 10 Parallel joint piece 10a Tip edge 11 Grooving part

Claims (4)

それぞれ断面円形とされた金属製のパイプ基材(2)とパイプ斜材(3)に関して、基材と斜材の軸線を相互に所定角度θだけ傾斜させた状態で、パイプ斜材の端部をパイプ基材の表面に溶接により接合固着する方法であり、
パイプ斜材(3)の端部の径方向に対向する周壁部(3a,3a)を中心に向けて押圧変形することにより、中心を挟んでほぼ平行に並ぶ一対の平板部(6)(6)を形成する成形工程と、
パイプ斜材(3)の軸線(Ab)に対して前記角度θで交差する基準線(L)に沿って、前記一対の平板部(6)(6)の先端側(6a)を切断分離することにより、分離されずに残存した平板部の基部側により一対の平行接合片(10)(10)を形成する切断工程と、
前記一対の平行接合片(10)(10)をパイプ基材(2)の軸線(Aa)と平行に配置して該平行接合片の先端縁部(10a)をパイプ基材(2)の表面に溶接する溶接工程と
から成ることを特徴とするパイプ斜材の接合固着方法。 With respect to the metal pipe base material (2) and the pipe diagonal material (3) having circular cross sections, the ends of the pipe diagonal material are in a state where the axes of the base material and the diagonal material are inclined by a predetermined angle θ with each other. Is a method of joining and fixing to the surface of the pipe base material by welding.
A pair of flat plate portions (6) (6) that are lined up almost in parallel with the center in between by pressing and deforming the peripheral wall portions (3a, 3a) facing the radial direction of the end of the pipe diagonal member (3) toward the center. ) And the molding process
The tip side (6a) of the pair of flat plate portions (6) (6) is cut and separated along the reference line (L) that intersects the axis (Ab) of the pipe diagonal member (3) at the angle θ. As a result, the cutting step of forming a pair of parallel joint pieces (10) (10) by the base side of the flat plate portion remaining without being separated,
The pair of parallel joint pieces (10) (10) are arranged in parallel with the axis (Aa) of the pipe base material (2), and the tip edge portion (10a) of the parallel joint piece is placed on the surface of the pipe base material (2). A method of joining and fixing pipe diagonal members, which comprises a welding process of welding to. 前記切断工程の後又は同時に、一対の平行接合片(10)(10)の先端縁部(10a)における外側縁部を除去する開先加工を実施する
ことを特徴とする請求項１に記載のパイプ斜材の接合固着方法。 The first aspect of the present invention, wherein the groove processing for removing the outer edge portion of the tip edge portion (10a) of the pair of parallel joint pieces (10) (10) is performed after or at the same time as the cutting step. How to join and fix pipe diagonal members. それぞれ断面円形とされた金属製のパイプ基材(2)とパイプ斜材(3)に関して、基材と斜材の軸線を相互に所定角度θだけ傾斜させた状態で、パイプ斜材の端部をパイプ基材の表面に溶接して成るパイプ斜材の接合固着構造であり、
パイプ斜材(3)の端部に一対の平行接合片(10)(10)が形成され、該平行接合片をパイプ基材(2)の軸線(Aa)と平行に配置して先端縁部(10a)をパイプ基材の表面に溶接しており、
前記一対の平行接合片(10)(10)は、パイプ斜材(3)の端部の径方向に対向する周壁部を中心に向けて押圧変形した一対の平板部(6)(6)により形成され、該平行接合片(10)(10)の先端縁部(10a)は、前記平板部をパイプ斜材(3)の軸線(Ab)に対して前記角度θで交差する基準線(L)に沿って切断分離した切断端により形成されて成る
ことを特徴とするパイプ斜材の接合固着構造。 With respect to the metal pipe base material (2) and the pipe diagonal material (3) having a circular cross section, the ends of the pipe diagonal material are in a state where the axes of the base material and the diagonal material are inclined by a predetermined angle θ with each other. It is a joint fixing structure of pipe diagonal members made by welding to the surface of the pipe base material.
A pair of parallel joint pieces (10) (10) are formed at the end of the pipe diagonal member (3), and the parallel joint pieces are arranged in parallel with the axis (Aa) of the pipe base material (2) and the tip edge portion. (10a) is welded to the surface of the pipe base material,
The pair of parallel joint pieces (10) (10) are formed by a pair of flat plate portions (6) (6) that are pressed and deformed toward the center of the peripheral wall portion that faces the radial direction of the end portion of the pipe diagonal member (3). The tip edge portion (10a) of the parallel joint piece (10) (10) is formed and the reference line (L) at which the flat plate portion intersects the axis line (Ab) of the pipe diagonal member (3) at the angle θ. ) Is formed by cutting and separating cut ends, and is characterized by a joint fixing structure of a pipe diagonal member. 前記一対の平行接合片(10)(10)の先端部(10a)は、外側縁部が面取り状に除去されて成ることを特徴とする請求項３に記載のパイプ斜材の接合固着構造。 The joint fixing structure for a pipe diagonal member according to claim 3, wherein the tip portion (10a) of the pair of parallel joint pieces (10) (10) is formed by removing the outer edge portion in a chamfered shape.
JP2020084242A 2020-05-13 2020-05-13 Joint fixing method and joint fixing structure of pipe diagonal material Pending JP2021178342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020084242A JP2021178342A (en) 2020-05-13 2020-05-13 Joint fixing method and joint fixing structure of pipe diagonal material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020084242A JP2021178342A (en) 2020-05-13 2020-05-13 Joint fixing method and joint fixing structure of pipe diagonal material

Publications (1)

Publication Number Publication Date
JP2021178342A true JP2021178342A (en) 2021-11-18

Family

ID=78510163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020084242A Pending JP2021178342A (en) 2020-05-13 2020-05-13 Joint fixing method and joint fixing structure of pipe diagonal material

Country Status (1)

Country Link
JP (1) JP2021178342A (en)

Similar Documents

Publication Publication Date Title
KR101928916B1 (en) Winding collar, winding collar production device, and winding collar production
KR101948450B1 (en) Method of manufacturing press-formed product
US20170259322A1 (en) Metal joint body and apparatus for manufacturing the metal joint body
JPH0747438A (en) Ring for swaging and its production
JP6761663B2 (en) How to process a plate-shaped work
JP4786401B2 (en) Method for manufacturing butt-welded metal sheet
JP2021178342A (en) Joint fixing method and joint fixing structure of pipe diagonal material
JP2003211326A (en) Metallic component manufacturing method and metallic component
JP5966849B2 (en) Manufacturing method for vehicle parts
JP6442863B2 (en) Welding apparatus, welding method, and welded part processing apparatus
JP2018061979A (en) Pipe manufacturing method and press device used therein
JP2004001003A (en) Method for joining planar member
JP4415729B2 (en) Press molding method and press molding apparatus
JP4679108B2 (en) Manufacturing method of closed cross-section structure
JP2009183989A (en) Base stock to be formed, press forming machine and press forming method
JP2004337919A (en) Laminated die
JP2020124721A (en) Method of manufacturing pipe
CN113543928B (en) Method for producing a structural component for connection to another structural component by means of stress-protection groove welding
KR102421401B1 (en) How to Build Mixer Blades
KR101969711B1 (en) Non shaft screw manufacturing method
JP4047470B2 (en) Steel strip joining method
JP2001221007A (en) Manufacturing method for nozzle diaphragm
JPH10100101A (en) Hole saw and manufacture thereof
JP2000283166A (en) Manufacturing method of winding bush
KR101581250B1 (en) Press mold

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230403

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20240122

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20240206

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240326