JP2004003279A

JP2004003279A - Pole structure

Info

Publication number: JP2004003279A
Application number: JP2002328656A
Authority: JP
Inventors: Kazuaki Kawanishi; 川西　和昭; Ryoichi Kanamori; 金森　亮一
Original assignee: Sankyo Aluminium Industry Co Ltd
Current assignee: Sankyo Aluminium Industry Co Ltd
Priority date: 2002-03-22
Filing date: 2002-11-12
Publication date: 2004-01-08
Anticipated expiration: 2022-11-12
Also published as: JP3804603B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pole structure for firmly connecting poles of different metals to each other with good work efficiency while preventing electric corrosion. <P>SOLUTION: This pole structure includes: an aluminum-made pole 1 having a hollow part circular in a top view; a steel or stainless-steel made reinforcement 2 disposed in the hollow part of the pole, having the outer peripheral part circular in a top view and anti-corrosion treated; and an engagement part 3 locked on the pole 1 and the reinforcement 2. The component wall of the hollow part has a plurality of recessed parts 4 having a tapered surface 5 inclined in the circumferential direction and connected in the longitudinal direction at designated intervals in the circumferential direction. A plurality of aluminum alloy materials or hard insulating materials constituting a projected part 6 having a taper surface 7 inclined in the circumferential direction are fixed to the outer peripheral part of the reinforcement 2. The tapered parts 5 and 7 are moved to the fitting position of the recessed and projected parts 4, 6 to stop rotation of the pole 1 and the reinforcement 2 with the engagement part 3. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば照明器具や風力発電装置等を屋外の高所に設置するときに用いる柱構造体に関するものである。
【０００２】
【従来の技術】
照明器具等を設置するための柱構造体においては、アルミニウム合金製の柱の内側にスチールやステンレス製の補強材を入れて補強したり、アルミニウム合金製の外側柱の上端部にスチールやステンレス製の内側柱の下端部を差し込んで延長するといったことが行われている。アルミニウム合金製の部材とスチールやステンレス製の部材を直に接触させておくと、電気的な腐食、いわゆる電食によって錆が助長され寿命が短くなるという問題がある。そこで従来は、補強材や内側柱の表面に防錆塗装を入念に行い、組み付けに際してその表面を擦って防錆塗装を剥がさないように慎重に行わねばならず、作業性が悪かった。また、防錆塗装を入念に行うことはコストアップにつながる。さらに、より確実に電食を防止するために、連結する柱と柱の間にゴムなどの軟質絶縁材を介在させる場合もあり、そうすることは作業性を悪化させるばかりでなく、軟質絶縁材が容易に変形・劣化するため、強固な連結の妨げにもなっていた。
【０００３】
【発明が解決しようとする課題】
本発明は以上に述べたような実情に鑑み、異種金属を用いた柱同士を、電食を防止しつつ作業性良く、しかも強固に連結できる柱構造体の提供を目的とする。
【０００４】
【課題を解決するための手段】
上記の課題を達成するために請求項１記載の発明による柱構造体は、上面視略円形の中空部を有するアルミニウム合金製の柱と、柱の中空部内に配置する上面視略円形の外周部を有し且つ外周部に防錆処理をしたスチール又はステンレス製の補強材と、柱及び補強材に係止する係合具とを備え、柱の中空部の構成壁には、円周方向に対して傾斜するテーパー面を有し且つ長手方向に連続した凹部を円周方向に所定間隔をおいて複数設けてあり、補強材の外周部には、円周方向に対して傾斜するテーパー面を有する凸部を構成するアルミニウム合金材又は硬質絶縁材を円周方向に間隔をおいて複数固定してあり、係合具は、柱を貫通して補強材に係止するものであり、柱と補強材とを、柱又は補強材を円周方向に回転させて互いの凹部と凸部のテーパー面を離間する位置から嵌合する位置に移動させ、係合具により回り止めしてあることを特徴とする。
【０００５】
請求項２記載の発明による柱構造体は、上面視略円形の中空部を有するアルミニウム合金製の外側柱と、外側柱の中空部内に配置する上面視略円形の外周部及び上面視略円形の中空部を有するアルミニウム合金製の連結材と、下端部を連結材の中空部内に配置し上端部を外側柱の上方に位置させるものであって、上面視略円形の外周部を有し且つ外周部に防錆処理をしたスチール又はステンレス製の内側柱と、外側柱及び連結材に係止する外側係合具と、連結材及び内側柱に係止する内側係合具とを備え、外側柱の中空部の構成壁と連結材の外周部の構成壁の何れか一方には、円周方向に対して傾斜するテーパー面を有し且つ長手方向に連続した凹部を円周方向に所定間隔をおいて複数設けてあり、他方には円周方向に対して傾斜するテーパー面を有する凸部を円周方向に所定間隔をおいて複数設けてあり、連結材の中空部の構成壁には、円周方向に対して傾斜するテーパー面を有し且つ長手方向に連続した凹部を円周方向に所定間隔をおいて複数設けてあり、内側柱の外周部には、円周方向に対して傾斜するテーパー面を有する凸部を構成するアルミニウム合金材又は硬質絶縁材を円周方向に間隔をおいて複数固定してあり、外側係合具は外側柱を貫通して連結材に係止するものであり、内側係合具は連結材を貫通して内側柱に係止するものであり、内側柱と連結材とを、内側柱又は連結材を円周方向に回転させて互いの凹部と凸部のテーパー面を離間する位置から嵌合する位置に移動させ、内側係合具により回り止めしてあり、外側柱と連結材とを、外側柱又は連結材を円周方向に回転させて互いの凹部と凸部のテーパー面を離間する位置から嵌合する位置に移動させ、外側係合具により回り止めしてあることを特徴とする。
【０００６】
請求項３記載の発明による柱構造体は、上面視略円形の中空部を有するアルミニウム合金製の外側柱と、下端部を外側柱の中空部内に配置し上端部を外側柱の上方に位置させるものであって、上面視略円形の外周部を有し且つ外周部に防錆処理をしたスチール又はステンレス製の内側柱と、外側柱及び内側柱に係止する係合具とを備え、外側柱の中空部の構成壁には、円周方向に対して傾斜するテーパー面を有し且つ長手方向に連続した凹部を円周方向に所定間隔をおいて複数設けてあり、内側柱の外周部には、円周方向に対して傾斜するテーパー面を有する凸部を構成するアルミニウム合金材又は硬質絶縁材を円周方向に間隔をおいて複数固定してあり、係合具は外側柱を貫通して内側柱に係止するものであり、外側柱と内側柱とを、外側柱又は内側柱を円周方向に回転させて互いの凹部と凸部のテーパー面を離間する位置から嵌合する位置に移動させ、係合具により回り止めしてあることを特徴とする。
【０００７】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。図１から図６は本発明の柱構造体の一実施形態を示している。この柱構造体は図６に示すように、風力発電装置２０用に形成したものであって、基礎２１に固定して立設したスチール製の補強材２と、補強材２に下端部を差し込んで立設したアルミニウム合金製の外側柱１と、外側柱１の上端部に連結材８を介して連結したスチール製の内側柱９とで構成されている。
【０００８】
図１と図２は、外側柱１と補強材２との連結部分の構造を示している。外側柱１はアルミニウム合金を押出し成形して略円筒状に形成したものであって、内部には上面視略円形の中空部を有する。中空部の構成壁には、円周を六つに分けた範囲で長手方向に連続する凹部４が形成してある。各凹部４には、円周から接線方向に湾曲してのび、円周方向に対して傾斜するテーパー面５を有している。補強材２は、スチールの円形のパイプで形成してあって、表面には防錆塗装を施してある。補強材２の外周部には、外側柱１の各凹部４に収容される位置に、長尺の楔状に形成したアルミニウム合金材をビス２２で固定して凸部６を構成してある。凸部６は、外側柱の凹部４のテーパー面５に沿って傾斜するテーパー面７を有している。
【０００９】
外側柱１と補強材２の連結は、以下のように行われる。まず補強材２の外周にアルミニウム合金材を取り付けて凸部６を構成してから、外側柱１の中空部内に補強材２を挿入する。挿入する時は、図１（イ）に示すように、凸部６が外側柱の凹部４を擦らないようにして行う。その後、補強材２か外側柱１の何れかを円周方向に回転させると、図１（ロ）に示すように、凸部６と凹部４のテーパー面同士５，７が嵌合し、楔の作用によって強固に固定される。その後、外側柱１に設けた円周方向の長穴２３からボルト３を挿入し、補強材２に空けた雌ネジ孔２４にそのボルトを捩じ込んで回り止めする。この構造によれば、外側柱１と補強材２を機械的に強固に連結できる。また、凸部６を構成するアルミニウム合金材は最初から補強材２に取り付けておくので、補強材表面の防錆塗装の被膜が傷つけられることがなく、補強材２を外側柱中空部に挿入するときにも、補強材２の外周と外側柱１の内周、及び補強材の凸部６と外側柱の凹部４の間には隙間があって強い摩擦が生ずることがないため、補強材２の防錆塗装に傷が付かない。また、回転により外側柱１と補強材２を一体化するときには、同じ材質であるお互いの凹部４と凸部６のテーパー面５，７が僅かなストロークで擦れ合うだけである。これらのことから、外側柱１と補強材２の間で電食の問題が生じない。
【００１０】
ボルト３を通すために外側柱１に設ける長穴２３は、円周に沿って水平に形成しても良いが、図９に示すように水平に対して斜めに傾けて設けても良い。そのように長穴２３を斜めに形成してボルト３を挿入した時には、外側柱１には自重Ｇと斜の長穴２３の作用によって、中心軸回りに回転しようとする力Ｔが生ずる。先に述べたように、外側柱１は回転することによってテーパー面５，７が嵌合して補強材２と結合されるものであることから、外側柱１の自重Ｇによって生ずる回転力Ｔを利用することで、その結合を揺るぎないものにすることができる。すなわち、一旦結合させた後に外側柱１が逆向きに回転して結合が弛むことを確実に防止できる。また、結合の時点において外側柱１に特別な力を加えることなく、自重Ｇによって生ずる回転力Ｔのみによって結合を行うことも可能である。自重によって生ずる回転力Ｔの向きは、当然ながら結合力を強める向き、すなわちテーパー面５，７がより強く嵌合する向きとし、その向きの回転力が生ずるように考慮して、長穴２３の傾斜する向きを決定する。実施形態のものでは、外側柱１に時計回りの回転力Ｔが生ずるように、長穴２３を右上がりの４５°に傾斜させている。傾斜の角度は４５°前後が好ましいが、限定するものではない。
【００１１】
図３から図５は、外側柱１と内側柱９の連結部の構造を示している。外側柱１と内側柱９は太さがかなり違うため、直接にではなく円筒状の連結材８を介して連結している。すなわち連結材８の中空部内に内側柱９の下端部を挿入して固定し、連結材８を外側柱１の中空部上端に挿入して固定してある。外側柱１と連結材８との連結、連結材８と外側柱１との連結の構造は、既に述べた外側柱１と補強材２との連結の構造と基本的に同じである。
【００１２】
連結材８は、アルミニウム合金を押出し成形して略円筒状に形成したものであって、内部には上面視略円形の中空部を有する。連結材８の外周部の構成壁には、円周を６等分した位置に、長手方向に連続して凸部１２を形成してある。各凸部１２は、外側柱１の中空部構成壁に設けた凹部４のテーパー面５と嵌合する、円周方向に対して傾斜したテーパー面１３を有している。さらに連結材８の外周部には、タッピングホール２５を４箇所に形成してある。また、連結材８の中空部構成壁には、円周を六つに分けた範囲で長手方向に連続する凹部１４が形成してある。各凹部１４には、円周方向に対して傾斜したテーパー面１５を有している。内側柱９はスチール製の丸いパイプで形成してあって、表面に防錆塗装を施してある。内側柱９の外周部には、連結材８の各凹部１４に収容される位置に、長尺の楔状に形成したアルミニウム合金材をビス２６で固定して凸部１６を構成してある。凸部１６は、連結材８の凹部１４のテーパー面１５に沿って傾斜するテーパー面１７を有している。
【００１３】
内側柱９と外側柱１の連結は、以下のような手順で行う。まず、内側柱９下端の外周部にアルミニウム合金材を取り付けて凸部１６を構成してから、内側柱９の下端部を連結材８の中空部内に挿入する。その後、内側柱９か連結材８を円周方向に回転させ、内側柱９の凸部１６と連結材８の凹部１４のテーパー面１５，１７同士を嵌合させた後、連結材８に設けた円周方向の長穴２７から内側固定ボルト１１を挿入し、内側柱９に空けた雌ネジ孔２８にそのボルト１１を捩じ込んで回り止めする。内側柱９が抜け落ちることがないように、連結材８の下面に受け板２９を当てがい、タッピングビス３０をタッピングホール２５に捩じ込んで固定する。次に、連結材８を外側柱１の中空部内に挿入し、連結材８か外側柱１のどちらかを円周方向に回転させ、連結材８の凸部１２と外側柱１の凹部４のテーパー面５，１３を嵌合させる。次に、外側柱１に設けた円周方向の長穴３１から外側固定ボルト１０を挿入し、連結材８に空けた雌ネジ孔３２にそのボルト１０を捩じ込んで回り止めする。最後に外側柱１の上端部に二つ割りのカバー３３を載置し、タッピングビス３４を連結材のタッピングホール２５に捩じ込んでカバーを固定する。このカバー３３によって、柱の連結部から雨が浸入することを阻止できる。
【００１４】
連結材８の内側固定ボルト１１用の長穴２７は、水平に形成してあっても良いが、本実施形態では図３に示すように右下がりに４５°傾斜している。このことから内側柱９には、自重により反時計回りに回転しようとする回転力が働くため、内側柱９と連結材８の結合力が強化される。また、外側柱１の外側固定ボルト１０用の長穴３１も右下がりに４５°傾斜しており、そのため連結材８には、連結材８及び内側柱９にかかる重力により反時計回りに回転しようとする回転力が働くから、連結材８と外側柱１との結合力が強化される。
【００１５】
図７は、連結材８を介さずに外側柱１と内側柱９を直接連結した実施形態を示している。ここでは、外側柱１の中空部の構成壁に形成した凹部４のテーパー面５に、内側柱９の外周部に構成したアルミニウム合金製の凸部１６のテーパー面１７を回転により嵌合させ、ボルト３５で回り止めすることにより柱同士を一体化して固定している。外側柱１のボルト３５用の長穴３６は、図８に示すように右下がりに４５°傾斜しており、そのため内側柱９には、内側柱９の自重により反時計回りに回転しようとする回転力が働くから、内側柱９と外側柱１との結合力が強化される。
【００１６】
本発明の柱構造体は、以上に述べた実施形態に限定されるものではない。外側柱１と連結材８との連結部においては、外側柱１の中空部の構成壁に凸部を形成し、連結材８の外周部の構成壁に凹部を形成しても良い。また、補強材や内側柱の外周部の凸部６，１６は、アルミニウム合金材に限らず硬質の絶縁材によって構成することもできる。硬質の絶縁材としては、例えば硬質樹脂や、スチールやステンレス材に防錆処理を施したものや絶縁物で被覆したものを用いることができる。回り止め用の係合具（ボルト）を挿通するための長穴は水平に設けてあっても良いが、傾斜して設けることで柱に回転力が生じ、結合力が強化される。
【００１７】
【発明の効果】
請求項１記載の発明による柱構造体は、アルミニウム合金製の柱と、その中空部内に設けたスチール又はステンレス製の補強材とが、一方を円周方向に回転させることで柱に設けた凹部のテーパー面と補強材に設けた凸部のテーパー面が嵌合し、楔の作用によって強固に一体化する。補強材の凸部は、予め補強材に取り付けておくので補強材外周部の防錆層に傷が付かず、補強材を柱に挿入するときにも補強材外周部が柱と擦れることがないし、また回転して一体化するときには凹部と凸部のテーパー面同士が僅かに擦れるだけで、且つ凸部は柱と同じアルミニウム合金材か硬質絶縁材であるので、電食の問題が生じない。この構造によれば、従来のようにゴム等の軟質絶縁材を介在させる必要がなく、補強材の防錆層を傷つける心配もないことから、組立の作業性が良い。
【００１８】
請求項２記載の発明によれば、上記と同様に外側柱と内側柱とを簡単に且つ強固に連結できることに加え、介在させる連結材の肉厚を適宜変更することで、いろいろな太さの外側柱と内側柱の組み合わせで強固な連結が可能になる。
【００１９】
請求項３記載の発明によれば、連結材を介さずとも外側柱と内側柱を簡易且つ強固に連結できる。
【図面の簡単な説明】
【図１】（イ）（ロ）
図２のＡ−Ａ線における横断面図であって、外側柱と補強材とを固定する前の状態と固定した後の状態を示している。
【図２】図６のＡ部を拡大して示す正面図である。
【図３】図６のＢ部を拡大して示す正面図である。
【図４】図３におけるＢ−Ｂ断面図である。
【図５】図６のＢ部の構成要素を分解して示す正面図である。
【図６】柱構造体の全体を示す正面図である。
【図７】外側柱と内側柱の連結部の別の実施形態を示す横断面図である。
【図８】外側柱と内側柱の連結部の別の実施形態を示す正面図である。
【図９】外側柱と補強材の連結部の実施形態を示す斜視図である。
【符号の説明】
１　柱、外側柱
２　補強材
３　ボルト（係合具）
４　凹部（外側柱内周）
５　テーパー面（外側柱内周）
６　凸部（補強材外周）
７　テーパー面（補強材外周）
８　連結材
９　内側柱
１０　外側固定ボルト（外側係合具）
１１　内側固定ボルト（内側係合具）
１２　凸部（連結材外周）
１３　テーパー面（連結材外周）
１４　凹部（連結材内周）
１５　テーパー面（連結材内周）
１６　凸部（内側柱外周）
１７　テーパー面（内側柱外周）
３５　ボルト（係合具）[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pillar structure used when, for example, a lighting fixture, a wind power generator, and the like are installed at a high place outdoors.
[0002]
[Prior art]
For pillar structures for installing lighting equipment, etc., steel or stainless steel reinforcing materials are reinforced by putting steel or stainless steel reinforcement inside the aluminum alloy pillars, or steel or stainless steel The lower end of the inner pillar is inserted and extended. If the member made of aluminum alloy and the member made of steel or stainless steel are brought into direct contact with each other, there is a problem that rust is promoted by electric corrosion, so-called electric corrosion, and the life is shortened. Therefore, conventionally, the surface of the reinforcing material and the inner pillars must be carefully painted with rust prevention, and when assembling, the surface must be carefully rubbed so as not to peel off the rust prevention painting, and the workability is poor. Careful application of anti-rust coating also leads to increased costs. Furthermore, in order to more reliably prevent electrolytic corrosion, a soft insulating material such as rubber may be interposed between the connecting columns, which not only deteriorates the workability but also the soft insulating material. Easily deformed and deteriorated, which hindered a strong connection.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described circumstances, and has as its object to provide a pillar structure capable of firmly connecting columns using different metals with good workability while preventing electrolytic corrosion.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, a pillar structure according to the present invention has a pillar made of an aluminum alloy having a hollow portion having a substantially circular shape in a top view, and a substantially circular outer peripheral portion disposed in the hollow portion of the pillar. And a steel or stainless steel reinforcing material having an outer peripheral portion subjected to a rust-proof treatment, and an engaging tool to be engaged with the column and the reinforcing material. A plurality of concave portions having a tapered surface inclined with respect to the longitudinal direction are provided at predetermined intervals in the circumferential direction, and a tapered surface inclined with respect to the circumferential direction is provided on an outer peripheral portion of the reinforcing member. A plurality of aluminum alloy materials or hard insulating materials constituting the convex portions having a plurality of aluminum alloy materials or hard insulating materials are fixed at intervals in the circumferential direction, and the engaging tool penetrates the column and locks with the reinforcing material. Reinforcement, by rotating the pillar or reinforcement in the circumferential direction, the concave and convex portions of each other Is moved to a position for fitting from a position separated a supermarkets surface, characterized in that are prevented from rotating by engaging tool.
[0005]
The pillar structure according to the second aspect of the present invention has an outer pillar made of an aluminum alloy having a hollow portion having a substantially circular shape in a top view, and an outer peripheral portion having a substantially circular shape in a top view and a substantially circular shape in a top view disposed in the hollow portion of the outer pillar. A connecting member made of an aluminum alloy having a hollow portion, a lower end portion disposed in the hollow portion of the connecting member and an upper end portion located above the outer pillar, and having a substantially circular outer peripheral portion in a top view and having an outer periphery An inner pillar made of steel or stainless steel having a rust-proofed portion, an outer engaging tool for engaging the outer pillar and the connecting member, and an inner engaging tool for engaging the connecting member and the inner pillar. One of the component wall of the hollow portion and the component wall of the outer peripheral portion of the connecting member has a tapered surface inclined with respect to the circumferential direction and has a concave portion continuous in the longitudinal direction at a predetermined interval in the circumferential direction. Are provided, and the other is a taper inclined with respect to the circumferential direction. A plurality of convex portions having a surface are provided at predetermined intervals in the circumferential direction, and the constituent wall of the hollow portion of the connecting member has a tapered surface inclined with respect to the circumferential direction and is continuous in the longitudinal direction. A plurality of concave portions are provided at predetermined intervals in the circumferential direction, and an aluminum alloy material or a hard insulating material constituting a convex portion having a tapered surface inclined with respect to the circumferential direction is provided on the outer peripheral portion of the inner column. A plurality of fixing members are fixed at intervals in the circumferential direction, the outer engaging member penetrates the outer column and locks to the connecting member, and the inner engaging member penetrates the connecting member and locks to the inner column. The inner pillar and the connecting member are moved in the circumferential direction by rotating the inner pillar or the connecting member to a position where the tapered surfaces of the concave portions and the convex portions are separated from each other to a position where the tapered surfaces are fitted to each other. The outer pillar and the connecting material are circumferentially prevented from rotating by the fitting. Rotate is moved to a position for fitting from a position separated a tapered surface of the mutual concave and convex portions, is characterized in that are prevented from rotating by an outer engagement member to.
[0006]
According to a third aspect of the present invention, there is provided a pillar structure including an outer pillar made of an aluminum alloy having a hollow portion having a substantially circular shape in a top view, a lower end portion disposed in the hollow portion of the outer pillar, and an upper end portion positioned above the outer pillar. A steel or stainless steel inner pillar having a substantially circular outer peripheral part in a top view and having an outer peripheral part subjected to a rust-proof treatment, and an engaging tool engaged with the outer pillar and the inner pillar. The constituent wall of the hollow portion of the column has a tapered surface inclined with respect to the circumferential direction, and a plurality of concave portions continuous in the longitudinal direction are provided at predetermined intervals in the circumferential direction. A plurality of aluminum alloy materials or hard insulating materials constituting a convex portion having a tapered surface inclined with respect to the circumferential direction are fixed at intervals in the circumferential direction, and the engaging tool penetrates the outer pillar. To lock the inner and outer pillars. Or an inner pillar is rotated in the circumferential direction is moved to a position for fitting from a position separated a tapered surface of the mutual concave and convex portions, is characterized in that are prevented from rotating by engaging tool.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described. 1 to 6 show an embodiment of a pillar structure according to the present invention. As shown in FIG. 6, this pillar structure is formed for a wind power generator 20, and has a steel reinforcing member 2 erected and fixed to a foundation 21 and a lower end portion inserted into the reinforcing member 2. And a steel inner pillar 9 connected to the upper end of the outer pillar 1 via a connecting member 8.
[0008]
1 and 2 show a structure of a connecting portion between the outer column 1 and the reinforcing member 2. FIG. The outer column 1 is formed by extruding an aluminum alloy into a substantially cylindrical shape, and has a hollow portion having a substantially circular shape in a top view. In the component wall of the hollow portion, there is formed a concave portion 4 which is continuous in the longitudinal direction in a range where the circumference is divided into six. Each recess 4 has a tapered surface 5 that extends tangentially from the circumference and is inclined with respect to the circumference. The reinforcing member 2 is formed of a steel circular pipe, and has a rust-proof coating on the surface. On the outer peripheral portion of the reinforcing member 2, a protruding portion 6 is formed by fixing a long wedge-shaped aluminum alloy material with a screw 22 at a position accommodated in each concave portion 4 of the outer column 1. The convex portion 6 has a tapered surface 7 inclined along the tapered surface 5 of the concave portion 4 of the outer column.
[0009]
The connection between the outer column 1 and the reinforcing member 2 is performed as follows. First, an aluminum alloy material is attached to the outer periphery of the reinforcing member 2 to form the convex portion 6, and then the reinforcing member 2 is inserted into the hollow portion of the outer column 1. When inserting, as shown in FIG. 1A, the insertion is performed such that the protrusion 6 does not rub the recess 4 of the outer column. Thereafter, when either the reinforcing member 2 or the outer pillar 1 is rotated in the circumferential direction, as shown in FIG. Firmly fixed by the action of Thereafter, the bolt 3 is inserted through the elongated hole 23 provided in the outer column 1 in the circumferential direction, and the bolt is screwed into the female screw hole 24 formed in the reinforcing member 2 to prevent rotation. According to this structure, the outer column 1 and the reinforcing member 2 can be mechanically and strongly connected. Further, since the aluminum alloy material forming the convex portion 6 is attached to the reinforcing material 2 from the beginning, the coating of the rust-proof coating on the surface of the reinforcing material is not damaged, and the reinforcing material 2 is inserted into the hollow portion of the outer column. In some cases, there is no gap between the outer periphery of the reinforcing member 2 and the inner periphery of the outer column 1 and between the convex portion 6 of the reinforcing member and the concave portion 4 of the outer column so that strong friction does not occur. Rust-proof paint is not damaged. Further, when the outer pillar 1 and the reinforcing member 2 are integrated by rotation, the tapered surfaces 5 and 7 of the concave portions 4 and the convex portions 6 made of the same material only rub with a slight stroke. For these reasons, there is no problem of electrolytic corrosion between the outer column 1 and the reinforcing member 2.
[0010]
The elongated hole 23 provided in the outer pillar 1 for passing the bolt 3 may be formed horizontally along the circumference, or may be provided obliquely with respect to the horizontal as shown in FIG. When the elongated hole 23 is formed obliquely and the bolt 3 is inserted, a force T to rotate around the central axis is generated in the outer column 1 by the action of the own weight G and the oblique elongated hole 23. As described above, since the outer column 1 is rotated and the tapered surfaces 5 and 7 are fitted and coupled to the reinforcing member 2, the rotational force T generated by the own weight G of the outer column 1 is reduced. Utilization can make the connection solid. That is, it is possible to surely prevent the outer pillar 1 from rotating in the opposite direction after the connection and loosening the connection. Further, it is also possible to perform the connection only by the rotational force T generated by the own weight G without applying a special force to the outer column 1 at the time of the connection. The direction of the rotational force T generated by its own weight is, of course, the direction in which the coupling force is strengthened, that is, the direction in which the tapered surfaces 5 and 7 are more strongly fitted. Determine the direction of tilt. In the embodiment, the long hole 23 is inclined at an angle of 45 ° which rises to the right so that a clockwise rotational force T is generated in the outer column 1. The angle of inclination is preferably about 45 °, but is not limited.
[0011]
3 to 5 show a structure of a connecting portion between the outer pillar 1 and the inner pillar 9. Since the outer pillar 1 and the inner pillar 9 are considerably different in thickness, they are connected not directly but via a cylindrical connecting member 8. That is, the lower end of the inner column 9 is inserted and fixed in the hollow portion of the connecting member 8, and the connecting member 8 is inserted and fixed in the upper end of the hollow portion of the outer column 1. The structure of the connection between the outer column 1 and the connecting member 8 and the structure of the connection between the connecting member 8 and the outer column 1 are basically the same as the structure of the connection between the outer column 1 and the reinforcing member 2 already described.
[0012]
The connecting member 8 is formed by extruding an aluminum alloy into a substantially cylindrical shape, and has a hollow portion having a substantially circular top view inside. On the constituent wall of the outer peripheral portion of the connecting member 8, a convex portion 12 is formed continuously in the longitudinal direction at a position where the circumference is equally divided into six. Each convex portion 12 has a tapered surface 13 inclined with respect to the circumferential direction, which fits with the tapered surface 5 of the concave portion 4 provided on the hollow component wall of the outer column 1. Further, tapping holes 25 are formed at four locations on the outer periphery of the connecting member 8. Further, a concave portion 14 that is continuous in the longitudinal direction is formed in the hollow portion constituting wall of the connecting member 8 in a range where the circumference is divided into six. Each recess 14 has a tapered surface 15 inclined with respect to the circumferential direction. The inner pillar 9 is formed of a round steel pipe, and has a rust-proof coating on the surface. On the outer peripheral portion of the inner pillar 9, a protruding portion 16 is formed by fixing a long wedge-shaped aluminum alloy material with a screw 26 at a position accommodated in each concave portion 14 of the connecting member 8. The convex portion 16 has a tapered surface 17 that is inclined along the tapered surface 15 of the concave portion 14 of the connecting member 8.
[0013]
The connection between the inner pillar 9 and the outer pillar 1 is performed in the following procedure. First, an aluminum alloy material is attached to the outer peripheral portion of the lower end of the inner column 9 to form the convex portion 16, and then the lower end of the inner column 9 is inserted into the hollow portion of the connecting member 8. Thereafter, the inner column 9 or the connecting member 8 is rotated in the circumferential direction, and the convex portion 16 of the inner column 9 and the tapered surfaces 15 and 17 of the concave portion 14 of the connecting member 8 are fitted to each other. The inner fixing bolt 11 is inserted through the elongated hole 27 in the circumferential direction, and the bolt 11 is screwed into the female screw hole 28 formed in the inner column 9 to prevent rotation. The receiving plate 29 is applied to the lower surface of the connecting member 8 so that the inner pillar 9 does not fall off, and the tapping screw 30 is screwed into the tapping hole 25 and fixed. Next, the connecting member 8 is inserted into the hollow portion of the outer column 1, and either the connecting member 8 or the outer column 1 is rotated in the circumferential direction, and the convex portion 12 of the connecting member 8 and the concave portion 4 of the outer column 1 are formed. The tapered surfaces 5 and 13 are fitted. Next, the outer fixing bolt 10 is inserted through the elongated hole 31 provided in the outer column 1 in the circumferential direction, and the bolt 10 is screwed into the female screw hole 32 formed in the connecting member 8 to prevent rotation. Finally, the split cover 33 is placed on the upper end of the outer pillar 1, and the tapping screw 34 is screwed into the tapping hole 25 of the connecting member to fix the cover. With this cover 33, it is possible to prevent rain from entering from the connecting portion of the pillar.
[0014]
The elongated hole 27 for the inner fixing bolt 11 of the connecting member 8 may be formed horizontally, but in the present embodiment, as shown in FIG. Because of this, a rotational force that tries to rotate counterclockwise due to its own weight acts on the inner pillar 9, so the coupling force between the inner pillar 9 and the connecting member 8 is strengthened. Also, the elongated hole 31 for the outer fixing bolt 10 of the outer column 1 is also inclined to the right by 45 °, so that the connecting member 8 will rotate counterclockwise due to the gravity acting on the connecting member 8 and the inner column 9. Therefore, the coupling force between the connecting member 8 and the outer column 1 is strengthened.
[0015]
FIG. 7 shows an embodiment in which the outer column 1 and the inner column 9 are directly connected without using the connecting member 8. Here, the tapered surface 17 of the aluminum alloy convex portion 16 formed on the outer peripheral portion of the inner column 9 is fitted by rotation to the tapered surface 5 of the concave portion 4 formed in the constituent wall of the hollow portion of the outer column 1. The pillars are integrally fixed by being prevented from rotating with bolts 35. The long hole 36 for the bolt 35 of the outer column 1 is inclined 45 ° downward to the right as shown in FIG. 8, so that the inner column 9 tends to rotate counterclockwise due to the weight of the inner column 9. Since the rotational force acts, the coupling force between the inner pillar 9 and the outer pillar 1 is strengthened.
[0016]
The column structure of the present invention is not limited to the above-described embodiment. In the connection portion between the outer column 1 and the connecting member 8, a convex portion may be formed on the constituent wall of the hollow portion of the outer column 1, and a concave portion may be formed on the constituent wall of the outer peripheral portion of the connecting member 8. Further, the reinforcing members and the convex portions 6, 16 on the outer peripheral portion of the inner pillar can be made of a hard insulating material without being limited to the aluminum alloy material. As the hard insulating material, for example, a hard resin, a material obtained by subjecting steel or stainless steel to rust prevention treatment, or a material coated with an insulating material can be used. An elongated hole for inserting a locking member (bolt) for rotation prevention may be provided horizontally. However, by providing the hole obliquely, a rotational force is generated in the column, and the coupling force is strengthened.
[0017]
【The invention's effect】
The pillar structure according to the first aspect of the present invention is a pillar structure in which a pillar made of an aluminum alloy and a steel or stainless steel reinforcing material provided in a hollow portion thereof are provided in the pillar by rotating one of them in a circumferential direction. And the tapered surface of the convex portion provided on the reinforcing member are fitted together, and are firmly integrated by the action of the wedge. Since the protrusions of the reinforcing material are attached to the reinforcing material in advance, the rust preventive layer on the outer circumferential portion of the reinforcing material is not damaged, and the outer circumferential portion of the reinforcing material does not rub against the pillar when the reinforcing material is inserted into the pillar. In addition, when rotating and integrating, the tapered surfaces of the concave portion and the convex portion only slightly rub against each other, and the convex portion is made of the same aluminum alloy material or hard insulating material as the column, so that there is no problem of electrolytic corrosion. According to this structure, there is no need to interpose a soft insulating material such as rubber as in the related art, and there is no fear of damaging the rust preventive layer of the reinforcing material, so that the workability of assembly is good.
[0018]
According to the second aspect of the present invention, the outer pillar and the inner pillar can be easily and firmly connected to each other in the same manner as described above, and the thickness of the connecting member to be interposed is appropriately changed so as to have various thicknesses. Strong connection becomes possible by the combination of the outer pillar and the inner pillar.
[0019]
According to the third aspect of the present invention, the outer pillar and the inner pillar can be easily and firmly connected without the interposition of the connecting member.
[Brief description of the drawings]
FIG. 1 (a) (b)
FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, showing a state before fixing an outer pillar and a reinforcing material and a state after fixing.
FIG. 2 is an enlarged front view showing a portion A in FIG. 6;
FIG. 3 is an enlarged front view showing a portion B in FIG. 6;
FIG. 4 is a sectional view taken along line BB in FIG. 3;
FIG. 5 is an exploded front view showing components of a portion B in FIG. 6;
FIG. 6 is a front view showing the entire pillar structure.
FIG. 7 is a cross-sectional view showing another embodiment of the connecting portion between the outer pillar and the inner pillar.
FIG. 8 is a front view showing another embodiment of the connecting portion between the outer pillar and the inner pillar.
FIG. 9 is a perspective view showing an embodiment of a connecting portion between an outer pillar and a reinforcing member.
[Explanation of symbols]
1 pillar, outer pillar 2 reinforcement 3 bolt (engagement tool)
4 recess (outer pillar inner circumference)
5 Tapered surface (outer pillar inner circumference)
6 convex parts (outer periphery of reinforcing material)
7 Tapered surface (reinforcement outer periphery)
8 Connecting material 9 Inner pillar 10 Outer fixing bolt (outer engaging tool)
11 Inside fixing bolt (Inside engaging tool)
12. Convex part (outer periphery of connecting material)
13 Tapered surface (connection material outer periphery)
14 recess (the inner circumference of the connecting material)
15 Tapered surface (inner circumference of connecting material)
16 convex part (outer side of inner pillar)
17 Tapered surface (inner pillar outer circumference)
35 bolt (engagement tool)

Claims

A column made of an aluminum alloy having a substantially circular hollow portion in a top view, and a steel or stainless steel reinforcing member having a substantially circular outer portion in a top view and disposed on the outer circumferential portion and having a rust-proof treatment disposed in the hollow portion of the column; , An engaging tool for engaging the column and the reinforcing member, and the constituent wall of the hollow portion of the column has a tapered surface inclined with respect to the circumferential direction, and a concave portion continuous in the longitudinal direction is formed in the circumferential direction. Are provided at predetermined intervals, and an aluminum alloy material or a hard insulating material constituting a convex portion having a tapered surface inclined with respect to the circumferential direction is provided on the outer circumferential portion of the reinforcing material at circumferential intervals. A plurality of engaging tools penetrate through the column and are engaged with the reinforcing member, and the column and the reinforcing member are rotated by rotating the column or the reinforcing member in the circumferential direction, and the recesses are formed in each other. From the position where the tapered surface of the convex portion is separated from the position where the tapered surface is Pillar structure, characterized in that are prevented from rotating.

An outer column made of an aluminum alloy having a substantially circular hollow portion in a top view, and a connecting member made of an aluminum alloy having a substantially circular outer peripheral portion in a top view and a substantially circular hollow portion in a top view disposed in the hollow portion of the outer column, The lower end portion is disposed in the hollow portion of the connecting member, and the upper end portion is located above the outer pillar, and has a substantially circular outer peripheral portion in a top view, and is made of steel or stainless steel having an outer peripheral portion subjected to rust prevention treatment. An inner pillar, an outer engaging member for engaging with the outer column and the connecting member, and an inner engaging member for engaging with the connecting member and the inner column. One of the constituent walls has a tapered surface inclined with respect to the circumferential direction, and a plurality of concave portions that are continuous in the longitudinal direction are provided at predetermined intervals in the circumferential direction. Protrusions having a tapered surface inclined with respect to the direction at predetermined intervals in the circumferential direction A plurality of concave portions having a tapered surface inclined with respect to the circumferential direction and continuous in the longitudinal direction are provided at predetermined intervals in the circumferential direction on the constituent wall of the hollow portion of the connecting member. In the outer peripheral portion of the inner pillar, a plurality of aluminum alloy material or hard insulating material forming a convex portion having a tapered surface inclined with respect to the circumferential direction is fixed at intervals in the circumferential direction, The outer engaging tool penetrates the outer column and locks to the connecting member, and the inner engaging tool penetrates the connecting member and locks to the inner column. The inner pillar or the connecting member is rotated in the circumferential direction to move the tapered surfaces of the concave portion and the convex portion from each other to a position where the tapered surfaces are fitted to each other, and are prevented from rotating by the inner engaging tool, and are connected to the outer pillar. The outer pillar or the connecting member is rotated in the circumferential direction, and the concave and convex portions of each other are rotated. Is moved to a position for fitting from a position separated a chromatography surface, columnar structure, characterized in that are prevented from rotating by an outer engagement member.

An outer column made of an aluminum alloy having a substantially circular hollow portion in a top view, and a lower end portion disposed in the hollow portion of the outer column and an upper end portion located above the outer column, and an outer peripheral portion having a substantially circular shape in a top view. And an inner pillar made of steel or stainless steel whose outer peripheral portion is rust-proofed, and an engaging tool for engaging with the outer pillar and the inner pillar, and the constituent wall of the hollow portion of the outer pillar has a circumferential wall. A plurality of concave portions having a tapered surface inclined with respect to the direction and provided in the longitudinal direction at predetermined intervals in the circumferential direction are provided, and a taper inclined with respect to the circumferential direction is provided on the outer peripheral portion of the inner column. A plurality of aluminum alloy materials or hard insulating materials constituting the convex portion having a surface are fixed at intervals in the circumferential direction, and the engaging tool penetrates the outer column and is locked to the inner column, The outer column and the inner column are mutually rotated by rotating the outer column or the inner column in the circumferential direction. Moving from a position spaced a tapered surface of the concave portion and the convex portion at a position fitting, columnar structure, characterized in that are prevented from rotating by engaging tool.