JP2971832B2 - Reinforcement structure of truss member end and method of manufacturing the same - Google Patents
Reinforcement structure of truss member end and method of manufacturing the sameInfo
- Publication number
- JP2971832B2 JP2971832B2 JP13085597A JP13085597A JP2971832B2 JP 2971832 B2 JP2971832 B2 JP 2971832B2 JP 13085597 A JP13085597 A JP 13085597A JP 13085597 A JP13085597 A JP 13085597A JP 2971832 B2 JP2971832 B2 JP 2971832B2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- steel pipe
- pipe
- truss member
- thickened portion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Automatic Assembly (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Forging (AREA)
- Joining Of Building Structures In Genera (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、鋼管をトラス部
材として用いるボールジョイント式の立体トラス等に用
いられるトラス部材端部の補強構造およびその製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a truss member end reinforcing structure used for a ball joint type space truss or the like using a steel pipe as a truss member, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】従来、この種の立体トラスにおけるボー
ルジョイント式の接合部構造として、図３に示す構造が
採用されている。これは、接合球体１０１に各方向のト
ラス部材１０２をボルト１０５で接合するものであり、
トラス部材１０２は、鋼管１０３にパイプエンド１０４
を溶接した部材と、各接合用部品とで構成される。接合
用部品としては、前記ボルト１０５と、ボルト締め付け
スリーブ１０６と、スプリング１０７と、スプリング止
めナット１０８とが用いられる。鋼管１０３とパイプエ
ンド１０４との溶接作業（溶接部ａ）は、ボルト１０５
をパイプエンド１０４に挿通させる作業が鋼管１０３の
溶接後ではできなくなることから、ボルト１０５を挿通
し、残りの各接合用部品１０６〜１０８をセットした後
に行われる。残りの各接合用部品１０６〜１０８のセッ
トを行うのは、ボルト１０５が不測に鋼管１０３の内部
へ抜けることを防止するためである。部材外表面の防錆
塗装は、一般錆止め塗装で、トラス部材１０２の全体の
組立完成後に行われる。2. Description of the Related Art Hitherto, a structure shown in FIG. 3 has been adopted as a joint structure of a ball joint type in this kind of space truss. This is to join the truss members 102 in each direction to the joining sphere 101 with bolts 105,
The truss member 102 has a steel pipe 103 and a pipe end 104.
And the joining parts. As the joining parts, the bolt 105, the bolt tightening sleeve 106, the spring 107, and the spring fixing nut 108 are used. The welding operation (weld portion a) between the steel pipe 103 and the pipe end 104 is performed by the bolt 105
After the welding of the steel pipe 103, the work of inserting the steel pipe 103 into the pipe end 104 becomes impossible. Therefore, the work is performed after the bolt 105 is inserted and the remaining joining parts 106 to 108 are set. The reason why the remaining joining parts 106 to 108 are set is to prevent the bolt 105 from accidentally falling into the steel pipe 103. The rust-preventive coating on the outer surface of the member is a general rust-preventive coating, and is performed after the entire assembly of the truss member 102 is completed.
【０００３】[0003]
【発明が解決しようとする課題】従来の一般錆止め塗装
では、この種の構造体の錆止めとしては効果が十分でな
く、そのため溶融亜鉛めっき等の重防食を施すことが望
まれる。しかし、現状の上記の構成，手順通りの製作で
は、溶融亜鉛めっきを行おうとすると、ボルト１０５や
スリーブ１０６等の熱処理部品が高温の亜鉛溶融槽中に
漬けるられることになるため、これらの部品の強度が劣
化する。また、鋼管１０３は、密閉に近い状態であるた
め、溶融亜鉛が管内に入らず、また入っても抜けない。
このため、前記各接合用部品１０５〜１０８を組み立て
たままのめっき処理は、実用上難しく、ほぼ不可能であ
る。しかも、部材サイズが大きくなると、前記各接合部
品１０５〜１０８を組み立てた状態で前記溶接部ａを溶
接しなくてはならないことから、溶接作業が困難になる
可能性がある。The conventional general rust-preventive coating is not sufficiently effective as a rust preventive for such a structure, and therefore it is desired to apply heavy corrosion protection such as hot-dip galvanizing. However, in the production according to the above-described current configuration and procedure, when performing hot-dip galvanizing, heat-treated components such as the bolt 105 and the sleeve 106 are immersed in a high-temperature zinc melting tank. The strength deteriorates. Further, since the steel pipe 103 is in a state close to hermetic, molten zinc does not enter the pipe and does not come out even if it enters.
Therefore, it is practically difficult and almost impossible to perform the plating process while assembling the joining parts 105 to 108. In addition, when the size of the members increases, the welding part a must be welded in a state where the joint parts 105 to 108 are assembled, so that the welding operation may be difficult.
【０００４】この発明は、上記課題を解消するものであ
り、重防食処理が簡単に行え、また強度低下を伴うこと
なく、組立の容易化が図れ、かつ部材が大径化しても鋼
管端部の溶接が容易に行えるトラス部材端部の補強構造
およびその製造方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can easily perform heavy-corrosion protection, facilitate the assembly without a decrease in strength, and achieve a steel pipe end portion even if the member has a large diameter. It is an object of the present invention to provide a truss member end reinforcing structure capable of easily welding a truss member and a method of manufacturing the same.
【０００５】[0005]
【課題を解決するための手段】この発明のトラス部材端
部の補強構造は、複数のねじ孔を有する接合球体に先端
が接合されるトラス部材であって、鋼管の端部近傍に増
肉部を一体に設け、この増肉部に、ボルトを挿入可能な
組立用孔を設けたことを特徴とする。トラス部材は、中
心にボルト挿通孔を有するパイプエンドを溶接した鋼管
と、前記ボルト挿通孔に鋼管の内側から挿通されて前記
接合球体の前記ねじ孔に締め込まれるボルトと、このボ
ルトに回転付与可能に外嵌して前記パイプエンドと接合
球体との間に介在するボルト締めスリーブとを備えたも
のである。前記鋼管およびパイプエンドは、両者が溶接
された状態で溶融亜鉛めっきが施されたものとすること
が好ましい。SUMMARY OF THE INVENTION A truss member end reinforcing structure according to the present invention is a truss member whose tip is joined to a joining sphere having a plurality of screw holes, wherein a thickened portion is provided near an end of a steel pipe. And an assembly hole into which the bolt can be inserted. The truss member includes a steel pipe to which a pipe end having a bolt insertion hole at the center is welded, a bolt inserted into the bolt insertion hole from the inside of the steel pipe and screwed into the screw hole of the joint sphere, and rotation applied to the bolt. And a bolted sleeve which is fitted to the outside and is interposed between the pipe end and the joint sphere. It is preferable that the steel pipe and the pipe end are hot-dip galvanized in a state where both are welded.
【０００６】この構成によると、鋼管に、ボルトの挿入
可能な組立用孔を形成したため、鋼管にパイプエンドを
溶接した後、ボルトやスリーブ等の各接合用部品を組み
立てることができる。そのため、鋼管にパイプエンドを
溶接した状態で溶融亜鉛めっきを行うことができ、部材
の重防食の代表的な手法である溶融亜鉛めっきがトラス
部材において可能となる。組立用孔の存在により、部材
断面の欠損が生じるが、鋼管に増肉部を設け、この増肉
部に組立用孔を設けるため、断面欠損による耐力低下が
防止できる。また、鋼管にパイプエンドを溶接する作業
は、他の接合用部品の未組立状態で行えるため、部材が
大径の場合も、鋼管端部のパイプエンドの溶接が容易に
行える。しかも、各接合用部品の組立が溶接の後工程と
なるため、全接合用部品が揃わなくても溶接作業がで
き、各工程間の時間調整が不要で、生産性が向上する。According to this configuration, since the steel pipe has the assembling hole into which the bolt can be inserted, after welding the pipe end to the steel pipe, the joining parts such as the bolt and the sleeve can be assembled. Therefore, hot-dip galvanizing can be performed in a state where the pipe end is welded to the steel pipe, and hot-dip galvanizing, which is a typical technique for heavy corrosion prevention of members, becomes possible in truss members. The presence of the assembling hole causes a loss in the cross section of the member. However, since a thickened portion is provided in the steel pipe and the assembling hole is provided in the thickened portion, a reduction in proof stress due to the lack of the cross section can be prevented. In addition, since the work of welding the pipe end to the steel pipe can be performed in a state where other joining parts are not assembled, even when the member has a large diameter, the pipe end at the end of the steel pipe can be easily welded. In addition, since the assembly of the joining parts is a post-welding process, the welding operation can be performed even if all the joining parts are not prepared, and the time adjustment between the steps is unnecessary, and the productivity is improved.
【０００７】この発明のトラス部材の製造方法は、この
発明のトラス部材端部の補強構造におけるトラス部材を
製造する方法であって、鋼管の端部に高周波加熱により
増肉部を形成する過程と、形成された増肉部に、ボルト
の挿入可能な組立用孔を形成する過程と、前記鋼管の端
部にパイプエンドを溶接する過程と、このパイプエンド
の溶接された鋼管に溶融亜鉛めっきを施す過程と、この
溶融亜鉛めっきが施された鋼管のパイプエンドのボルト
挿通孔にボルトを挿通し、このボルトにボルト締めスリ
ーブを組付ける過程とを含む方法である。この製造方法
を採ることにより、請求項１，請求項２に記載のトラス
部材につき説明した前述の効果を十分に発揮させること
ができる。増肉部の形成方法としては、素材となる鋼管
を高周波加熱することにより成型する方法が実用化され
ており、高品質の増肉部を得ることが可能である。A method of manufacturing a truss member according to the present invention is a method of manufacturing a truss member in a reinforcing structure for an end portion of a truss member according to the present invention, comprising the steps of forming a thickened portion at an end of a steel pipe by high-frequency heating. In the formed thickened portion, a process of forming an assembly hole into which a bolt can be inserted, a process of welding a pipe end to an end of the steel pipe, and hot-dip galvanizing the welded steel pipe of the pipe end. The method includes a step of applying, and a step of inserting a bolt into a bolt insertion hole of a pipe end of the steel pipe subjected to the hot-dip galvanization, and attaching a bolt fastening sleeve to the bolt. By adopting this manufacturing method, the above-described effects described for the truss member according to claims 1 and 2 can be sufficiently exhibited. As a method of forming the thickened portion, a method of forming a steel pipe as a raw material by high-frequency heating has been put to practical use, and a high quality thickened portion can be obtained.
【０００８】[0008]
【発明の実施の形態】この発明の一実施形態を図１およ
び図２と共に説明する。図２は立体トラスにおけるトラ
ス接合構造を示し、各方向のトラス部材１（１本のみを
図示）は接合球体２を介して互いに接合される。接合球
体２は、球状の鋼材に各方向のねじ孔３（１個のみを図
示）を形成したものである。トラス部材１は、パイプエ
ンド４が溶接された鋼管５と、この鋼管５を接合球体２
に接合するためのボルト６，ボルト締めスリーブ７，ば
ね部材９，およびばね受けナット８等の接合用部品とで
構成される。各接合用部品６〜９の詳細は、後に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows a truss joint structure in a space truss, and truss members 1 (only one is shown) in each direction are joined to each other via a joint sphere 2. The joint sphere 2 is formed by forming screw holes 3 (only one is shown) in each direction in a spherical steel material. The truss member 1 includes a steel pipe 5 to which a pipe end 4 is welded, and a joining sphere 2
And a joining part such as a bolt 6, a bolt fastening sleeve 7, a spring member 9, and a spring receiving nut 8 for joining to the joint. Details of the joining parts 6 to 9 will be described later.
【０００９】図１はトラス部材１の製造過程を示す。素
材鋼管５′に、高周波加熱により増肉部５ａを形成し、
端部近傍の所定長さ部分が増肉部５ａとされた鋼管５を
得る（図１（Ａ），（Ｂ））。この場合に、素材鋼管
５′に軸方向の一部ずつ、高周波加熱を行いながら軸方
向の圧力を加えることにより、希望の長さ範囲および肉
厚の増肉部５ａを得ることができる。なお、長尺の素材
鋼管５′の複数箇所に増肉部５ａを形成し、これを所定
長さに切断して端部に増肉部５ａを有する鋼管５として
も良い。このように増肉部５ａが形成された鋼管５の増
肉部５ａに、前記ボルト６を挿入するための組立用孔１
０を明ける（図１（Ｃ））。組立用孔１０は、この例で
は丸孔としてあるが、他の種々の形状としても良い。FIG. 1 shows a manufacturing process of the truss member 1. A thickened portion 5a is formed on the material steel pipe 5 'by high-frequency heating,
A steel pipe 5 whose predetermined length near the end is a thickened portion 5a is obtained (FIGS. 1A and 1B). In this case, by applying an axial pressure to the raw steel pipe 5 'while applying high-frequency heating to a part thereof in the axial direction, a thickened portion 5a having a desired length range and a desired wall thickness can be obtained. In addition, it is good also as forming the thickened part 5a in several places of the long material steel pipe 5 ', and cutting this to predetermined length, and making the steel pipe 5 which has the thickened part 5a in an end part. The assembling hole 1 for inserting the bolt 6 into the thickened portion 5a of the steel pipe 5 in which the thickened portion 5a is formed as described above.
0 is cleared (FIG. 1 (C)). The assembling hole 10 is a round hole in this example, but may have other various shapes.
【００１０】この組立用孔１０の加工された鋼管５の端
部にパイプエンド４を溶接する（図１（Ｄ））。パイプ
エンド４は、中心にボルト挿通孔４ａを有するキャップ
状のものであり、外周部に開先加工を施し、この開先加
工部に鋼管５の端部を嵌合させて溶接部１１により溶接
してある。なお、パイプエンド４は、中心にボルト挿通
孔４ａを有する形状であれば良く、円板状のものなどで
あっても良い。このパイプエンド４の溶接された鋼管５
に、溶融亜鉛めっきを施す（図１（Ｅ））。溶融亜鉛め
っきは、パイプエンド４と共に、内外面に施す。The pipe end 4 is welded to the end of the steel pipe 5 in which the assembling hole 10 has been machined (FIG. 1D). The pipe end 4 is a cap-shaped one having a bolt insertion hole 4a at the center, a groove is formed on the outer peripheral portion, and the end of the steel pipe 5 is fitted to the groove processed portion and welded by the welding portion 11. I have. The pipe end 4 may have a shape having a bolt insertion hole 4a at the center, and may be a disk-shaped one. The welded steel pipe 5 of this pipe end 4
Is subjected to hot-dip galvanizing (FIG. 1E). Hot-dip galvanizing is applied to the inner and outer surfaces together with the pipe end 4.
【００１１】このようにして、パイプエンド４が溶接さ
れ、溶融亜鉛めっきの施された鋼管５に、組立用孔１０
からボルト６を挿入してパイプエンド４のボルト挿通孔
４ａに鋼管５の内側からボルト６を挿通し、この挿通さ
れたボルト６に、ボルト締めスリーブ７，ばね部材９，
およびばね受けナット８等の接合用部品を鋼管５の外側
から組付け、トラス部材１が完成する。なお、この実施
形態におけるトラス部材１は、両端が同じ構成とされ、
両端が各々別の接合球体２に接合されるものであるが、
一端のみを接合球体２と接合するように構成したもので
あっても良い。In this way, the pipe end 4 is welded and the assembling hole 10 is formed in the hot-dip galvanized steel pipe 5.
The bolt 6 is inserted from the inside of the steel pipe 5 into the bolt insertion hole 4 a of the pipe end 4 from the inside of the steel pipe 5, and the bolted sleeve 7, the spring member 9,
The joining parts such as the spring receiving nut 8 and the like are assembled from the outside of the steel pipe 5, and the truss member 1 is completed. The truss member 1 in this embodiment has the same configuration at both ends.
Both ends are joined to different joining spheres 2 respectively,
It may be configured such that only one end is joined to the joining sphere 2.
【００１２】ボルト６等の接合用部品の詳細を説明す
る。ボルト６は、スプラインからなる非円形軸部６ｂを
有し、先端がねじ部６ｃに形成されていて、頭部６ａが
パイプエンド４の内面に係合する。このボルト６の軸部
の外周に、ボルト締めスリーブ７が被せられる。ボルト
締めスリーブ７は、内周面にボルト６の非円形軸部６ｂ
に係合するスプライン溝からなる回転係合部７ａと、こ
れよりもボルト先端側に位置する大径内周面部７ｂとが
段差部７ｃを介して形成されている。ボルト締めスリー
ブ７の外周面は断面六角形状等に形成してある。ボルト
締めスリーブ７内に遊嵌して、ボルト６の先端ねじ部６
ｃに螺着する薄ナットからなるばね受けナット８と、圧
縮コイルばねからなるばね部材９とを設ける。ばね部材
９は、ボルト締めスリーブ７の段差部７ｃとばね受けナ
ット８とに両端が係合する。ばね受けナット８は、正面
に回転用工具の係合孔または係合溝（図示せず）を有す
るものである。The details of the joining parts such as the bolts 6 will be described. The bolt 6 has a non-circular shaft portion 6 b made of a spline, and a tip is formed on the screw portion 6 c, and a head portion 6 a engages with the inner surface of the pipe end 4. A bolt fastening sleeve 7 is put on the outer periphery of the shaft of the bolt 6. The bolted sleeve 7 has a non-circular shaft portion 6b of the bolt 6 on the inner peripheral surface.
And a large-diameter inner peripheral surface portion 7b located on the tip end side of the bolt with respect to the rotary engaging portion 7a, which is formed by a spline groove. The outer peripheral surface of the bolted sleeve 7 is formed in a hexagonal cross section or the like. The screw 6 is loosely fitted into the bolting sleeve 7 and has a threaded end 6 of the bolt 6.
A spring receiving nut 8 made of a thin nut screwed to c and a spring member 9 made of a compression coil spring are provided. Both ends of the spring member 9 are engaged with the stepped portion 7c of the bolted sleeve 7 and the spring receiving nut 8. The spring receiving nut 8 has an engaging hole or an engaging groove (not shown) for a rotating tool on the front surface.
【００１３】つぎに、接合作業を説明する。接続前の状
態において、ボルト６は、ボルト締めスリーブ７の段差
部７ｃを反力点として、ばね部材９がばね受けナット８
を押すことによりボルト締めスリーブ７から突出させら
れる。この突出したボルト６を、ばね部材９に抗して押
し込め、ボルト６の先端を接合球体２のねじ孔３に合わ
せる。これにより、ボルト６は先端がばね部材９の付勢
力でねじ孔３に押し付けられた状態となり、ねじ孔３に
対する初期推進力が得られる。この状態で、ボルト締め
スリーブ７を所定方向に回転させると、ボルト６は、ボ
ルト締めスリーブ７と共に回転しながらボルト締めスリ
ーブ７から次第に突出し、接合球体２のねじ孔３にねじ
込まれる。このようにねじ込みを行って、図２のように
ボルト６の頭部６ａがパイプエンド４の端面に当接し、
ボルト締めスリーブ７がパイプエンド４と接合球体２と
の間で突っ張り状態になるまで締め付けられると、接合
が完了する。Next, the joining operation will be described. In the state before connection, the bolt 6 uses the stepped portion 7c of the bolted sleeve 7 as a point of reaction, and the spring member 9
Is pushed out of the bolted sleeve 7. The protruding bolt 6 is pushed in against the spring member 9, and the tip of the bolt 6 is aligned with the screw hole 3 of the joint sphere 2. Thereby, the bolt 6 is in a state where the tip is pressed against the screw hole 3 by the urging force of the spring member 9, and an initial propulsive force for the screw hole 3 is obtained. When the bolted sleeve 7 is rotated in a predetermined direction in this state, the bolt 6 gradually projects from the bolted sleeve 7 while rotating together with the bolted sleeve 7, and is screwed into the screw hole 3 of the joint sphere 2. By screwing in this way, the head 6a of the bolt 6 comes into contact with the end face of the pipe end 4 as shown in FIG.
Joining is completed when the bolted sleeve 7 is tightened to a state of tension between the pipe end 4 and the joint sphere 2.
【００１４】この構成のトラス部材端部の補強構造によ
ると、このように鋼管５に、ボルト６の挿入可能な組立
用孔１０を形成したため、鋼管５にパイプエンド４を溶
接した後、ボルト６やボルト締めスリーブ７等の各接合
用部品を組み立てることができる。そのため、図１の製
造工程に示すように、鋼管５にパイプエンド４を溶接し
た状態で溶融亜鉛めっきを行うことができ、部材の重防
食の代表的な手法である溶融亜鉛めっきがトラス部材１
において可能となる。組立用孔１０の存在により、部材
断面の欠損が生じるが、鋼管５に増肉部５ａを設け、こ
の増肉部５ａに組立用孔１０を設けるため、断面欠損に
よる耐力低下が防止できる。また、鋼管５にパイプエン
ド４を溶接する作業は、他の接合用部品６〜９の未組立
状態で行えるため、部材が大径の場合も、鋼管５の端部
へのパイプエンド４の溶接が容易に行える。しかも、各
接合用部品６〜９の組立が溶接の後工程となるため、全
接合用部品６〜９が揃わなくても溶接作業ができ、各工
程間の時間調整が不要で、生産性が向上する。According to the reinforcing structure at the end of the truss member having this configuration, since the assembling hole 10 into which the bolt 6 can be inserted is formed in the steel pipe 5, the pipe end 4 is welded to the steel pipe 5 and then the bolt 6 And joining parts such as the bolted sleeve 7 and the like. Therefore, as shown in the manufacturing process of FIG. 1, hot dip galvanizing can be performed in a state where the pipe end 4 is welded to the steel pipe 5.
Is possible. The presence of the assembling hole 10 causes a loss in the cross section of the member. However, since the thickened portion 5a is provided in the steel pipe 5 and the assembling hole 10 is provided in the thickened portion 5a, a reduction in proof stress due to the lack of the cross section can be prevented. In addition, since the work of welding the pipe end 4 to the steel pipe 5 can be performed in a state where the other joining parts 6 to 9 are not assembled, even when the member has a large diameter, the welding of the pipe end 4 to the end of the steel pipe 5 is performed. Can be easily performed. Moreover, since the assembling of the joining parts 6 to 9 is a post-welding process, the welding operation can be performed even if all the joining parts 6 to 9 are not prepared, and time adjustment between the steps is unnecessary, and productivity is reduced. improves.
【００１５】[0015]
【発明の効果】この発明のトラス部材端部の補強構造お
よびその製造方法によると、鋼管の端部に増肉部を形成
し、この増肉部にボルトの挿通可能な組立用孔を形成す
るようにしたため、次の各効果が得られる。 部材の重防食の代表的な手法である溶融亜鉛めっき
が、トラス部材に対して可能となる。 部材が大径化しても、鋼管端部のパイプエンドの溶接
が容易に行える。 鋼管端部のボルトやボルト締めスリーブ等の接合用部
品の組立が後工程となるため、全部品が揃わなくても溶
接作業ができ、生産管理が容易になると共に、生産性が
向上する。 組立用孔は増肉部に設けられているため、部材耐力の
低下を考慮する必要がない。According to the truss member end reinforcing structure and the method of manufacturing the same of the present invention, a thickened portion is formed at the end of a steel pipe, and an assembly hole through which a bolt can be inserted is formed in the thickened portion. As a result, the following effects can be obtained. Hot-dip galvanizing, which is a typical technique for heavy corrosion prevention of members, becomes possible for truss members. Even if the diameter of the member increases, welding of the pipe end at the end of the steel pipe can be easily performed. Since the joining parts such as the bolts and the bolted sleeves at the ends of the steel pipes are assembled in a later step, the welding operation can be performed even if all the parts are not prepared, so that the production management is facilitated and the productivity is improved. Since the assembling hole is provided in the thickened portion, it is not necessary to consider a decrease in the member strength.
【図１】この発明の一実施形態にかかるトラス部材端部
の補強構造およびその製造方法の説明図である。FIG. 1 is an explanatory view of a truss member end reinforcing structure and a method of manufacturing the same according to an embodiment of the present invention.
【図２】同トラス部材と接合球体との関係を示す破断側
面図である。FIG. 2 is a cutaway side view showing a relationship between the truss member and a joint sphere.
【図３】従来例の破断側面図である。FIG. 3 is a cutaway side view of a conventional example.
１…トラス部材 ２…接合球体 ３…ねじ孔 ４…パイプエンド ５…鋼管 ５ａ…増肉部 ６…ボルト ７…ボルト締めスリーブ ８…ばね受けナット ９…ねじ部材 １０…組立用孔 １１…溶接部 DESCRIPTION OF SYMBOLS 1 ... Truss member 2 ... Joint sphere 3 ... Screw hole 4 ... Pipe end 5 ... Steel pipe 5a ... Thickening part 6 ... Bolt 7 ... Bolt tightening sleeve 8 ... Spring receiving nut 9 ... Screw member 10 ... Assembly hole 11 ... Welded part
Claims (3)
ボルト接合されるトラス部材であって、中心にボルト挿
通孔を有するパイプエンドを溶接した鋼管と、前記ボル
ト挿通孔に鋼管の内側から挿通されて前記接合球体の前
記ねじ孔に締め込まれるボルトと、このボルトに回転付
与可能に外嵌して前記パイプエンドと接合球体との間に
介在するボルト締めスリーブとを備えたトラス部材にお
いて、前記鋼管の端部近傍に増肉部を一体に設け、この
増肉部に、前記ボルトを挿入可能な組立用孔を設けたこ
とを特徴とするトラス部材端部の補強構造。1. A truss member having a tip joined by bolts to a joint sphere having a plurality of screw holes, a steel pipe having a pipe end welded with a bolt insertion hole at the center, and a steel pipe inserted into the bolt insertion hole from the inside of the steel pipe. In a truss member including a bolt inserted and fastened to the screw hole of the joint sphere, and a bolt fastening sleeve externally fitted to the bolt so as to be rotatable and interposed between the pipe end and the joint sphere. A reinforced truss member end structure, wherein a thickened portion is integrally provided near an end of the steel pipe, and an assembly hole into which the bolt can be inserted is provided in the thickened portion.
溶接された状態で溶融亜鉛めっきが施されたものである
請求項１記載のトラス部材端部の補強構造。2. The reinforcing structure for a truss member end according to claim 1, wherein the steel pipe and the pipe end are hot-dip galvanized in a state where they are welded.
造におけるトラス部材を製造する方法であって、鋼管の
端部に高周波加熱により増肉部を形成する過程と、形成
された増肉部に、ボルトの挿入可能な組立用孔を形成す
る過程と、前記鋼管の端部にパイプエンドを溶接する過
程と、このパイプエンドの溶接された鋼管に溶融亜鉛め
っきを施す過程と、この溶融亜鉛めっきが施された鋼管
のパイプエンドの中心のボルト挿通孔にボルトを挿通
し、このボルトにボルト締めスリーブを組付ける過程と
を含むトラス部材の製造方法。3. The method of manufacturing a truss member in the truss member end reinforcing structure according to claim 2, wherein a step of forming a thickened portion at an end of the steel pipe by high-frequency heating, and the formed thickened portion. Forming an assembly hole into which a bolt can be inserted, welding a pipe end to the end of the steel pipe, applying galvanizing to the welded steel pipe of the pipe end, Inserting a bolt into a bolt insertion hole at the center of a pipe end of a galvanized steel pipe, and attaching a bolted sleeve to the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13085597A JP2971832B2 (en) | 1997-05-21 | 1997-05-21 | Reinforcement structure of truss member end and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13085597A JP2971832B2 (en) | 1997-05-21 | 1997-05-21 | Reinforcement structure of truss member end and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10317485A JPH10317485A (en) | 1998-12-02 |
| JP2971832B2 true JP2971832B2 (en) | 1999-11-08 |
Family
ID=15044279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13085597A Expired - Fee Related JP2971832B2 (en) | 1997-05-21 | 1997-05-21 | Reinforcement structure of truss member end and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2971832B2 (en) |
-
1997
- 1997-05-21 JP JP13085597A patent/JP2971832B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10317485A (en) | 1998-12-02 |
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