JP4198553B2

JP4198553B2 - Flexible joint structure

Info

Publication number: JP4198553B2
Application number: JP2003202502A
Authority: JP
Inventors: 田祐司野
Original assignee: Victaulic Company of Japan Ltd
Current assignee: Victaulic Company of Japan Ltd
Priority date: 2003-07-28
Filing date: 2003-07-28
Publication date: 2008-12-17
Anticipated expiration: 2023-07-28
Also published as: JP2005042378A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、海底トンネルの施工に用いられる管状構造物に取り付けら利、管状構造物の地震や地盤変動等による相対変位を許容する可撓継手構造に関する。
【０００２】
【従来の技術】
地中トンネルに用いられる管状構造物の可撓継手構造の一例は、図１７に示すように、前管体１００と、後管体１０１と、前管体１００と後管体１０１を水密的に連結する、内側に向いた山１０２ａを有する一次止水ゴムリング１０２と、一次止水ゴムリング１０２より半径方向内側で前管体１００と後管体１０１を水密的に連結する、内側に向いた山１０３ａを有する二次止水ゴムリング１０３と、前管体１００と後管体１０１の間の外周を覆うスキンプレート１０４とを備えている（例えば特許文献１）。
【０００３】
【特許文献１】
特開平９−１３７６９４号公報（第２頁、第２図）
【０００４】
【発明が解決しようとする課題】
上記可撓継手構造は、管状構造物に取り付ける前に、前管体と後管体の二次止水ゴムリング装着部位に、図示しない推力受け材と剪断防止材を取り付け、管状構造物に取り付けた後に、剪断防止材と推力受け材を取り外し、二次止水ゴムリング装着部位に二次止水ゴムリングを固定する。
【０００５】
上記可撓継手構造は、内側に向いた山を有する止水ゴムリングにより前管体と後管体を水密的に連結し、止水ゴムリングの内側に向いた山が外圧を引っ張り力として受けるため、止水ゴムリングの耐久性に欠けるとともに、外圧を止水ゴムリングに埋設した補強布で支えるため、止水ゴムリングが高い外水圧に耐えることができないという問題がある。
【０００６】
本発明は、上記した点を考慮してなされたもので、ゴムリングが高い外水圧に耐えることができるとともに、ゴムリングの耐久性が改良される可撓継手構造を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明の可撓継手構造は、端部に外側管状部を有する一方の管体に固定された固定部材と、端部に内側管状部を有する他方の管体に固定された固定部材と、一方の管体と他方の管体と間に配置されたゴムリングと、ゴムリングの半径方向内側に配置されたゴムリング支持構造と、管体と管体と間を覆うように両管体に取り付けられたスキンプレートとを有し、前記一方の管体の前記外側管状部と前記他方の管体の前記内側管状部とは、前記外側管状部と前記内側管状部の間に形成される管状空間に配置されるクッション材を介して接続されており、前記ゴムリングは、少なくとも２つの外側に向いた山と、山と山の間に位置する谷部を有し、両端部を各固定部材に固定し、谷部をゴムリング支持構造で支持し、前記ゴムリング支持構造は、前記固定部材に固定されるリンクバーと、このリンクバーに取り付けられゴムリングの谷部を支持する耐圧プレートとを有し、前記リンクバーは、軸線方向に延びる長孔を有し、前記固定部材に軸線方向に位置を調節自在に固定されることを特徴とする。これによって、ゴムリングの外側に向いた山が外力を圧縮として受けるのでゴムリングの耐久性が改良され、ゴムリングに加えられる力をゴムリむング支持構造で受けるので、ゴムリングが高い外水圧に耐えることができる。
【０００８】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
図１は、本発明に係る可撓継手構造１を構造物２と構造物２に半径方向外方より組み立てた状態を示す図であり、図２は、本発明に係る可撓継手構造１ａを構造物２と構造物２に半径方向内方より組み立てた状態を示す図である。
【０００９】
上記構造物２は、角形、長円形、馬蹄形等の断面を持つ管状構造物であり、基本的に、内面板３と、外面板４と、端面板５ａ，５ｂとを有する。
【００１０】
図１に示す管状構造物２は、端面板５ａを設けた側に、外面板４より軸線方向外方に延びる内面板３の短い内面板延設部６を形成し、端面板５ｂを設けた側に、内面板３より軸線方向外方に延びる外面板４の長い外面板延設部７を形成している。
【００１１】
上記管状構造物２の一端側に位置する端面板５ａは、外面板４の端面４ａに当接して内面板３の外面３ａに接するように配置され、内面板３の外面３ａと外面板４の端面４ａに溶接手段により溶着される。端面板５ａの外面の半径方向中間位置に内面板延設部６に平行に軸線方向に延びる筒状板８が溶接手段により溶着される。さらに、内面板延設部６と筒状板８の先端面に端板９が溶接手段により溶着される。これにより、管状構造物２の一端側に端面板５ａから軸線方向外方に延びる長い内側管状部１０が形成される。
【００１２】
上記管状構造物２の他端側に位置する端面板５ｂは、内面板３の端面に当接して外面板４の内面４ｂに接するように配置され、外面板４の内面４ｂと内面板３の端面に溶接手段により溶着される。端面板５ｂの外面の半径方向中間位置に外面板延設部７に平行に軸線方向に延びる筒状板１１が溶接手段により溶着される。さらに、外面板延設部７と筒状板１１の先端面に端板１２が溶接手段により溶着される。これにより、管状構造物２の他端側に端面板５ｂから軸線方向外方に延びる短い外側管状部１３が形成される。
【００１３】
上記管状構造物２は、本体部分の一端側に短い外側管状部１３と、本体部分の他端側に長い内側管状部１０とを有する、したがって、管状構造物２，２を連結するために、一方の管状構造物２の一端に設けた短い外側管状部１３を他方の管状構造物２の他端に設けた長い内側管状部１０にゆるく嵌合した時、短い外側管状部１３と長い内側管状部１０と端面板５ａとに囲まれた可撓継手構造収容空間Ａが形成される。そして、可撓継手構造収容空間Ａに可撓継手構造１が配置される。また、一方の管状構造物２の外側管状部１３と他方の管状構造物２の内側管状部１０と間に形成される環状空間に筒状クッション材１４が配置される。
【００１４】
上記可撓継手構造１は、図１に示すように、一方の管状構造物２の外側管状部１３の端板１２に固定される固定部材１５と、他方の管状構造物２の端面板５ａに固定される固定部材１６と、固定部材１５と固定部材１６を橋絡するゴムリング１７と、固定されたゴムリング１７の半径方向内側に配置されたゴムリング支持構造１８と、ゴムリング１７を覆うように一方の管状構造物２の外側管状部１３と他方の管状構造物２の外面板４に点付け溶接により固定されたスキンプレート１９とを有する。
【００１５】
上記固定部材１５は、複数のセグメントから形成され、全体として管状構造物２の外形に対応した管状体を形成する。各セグメントは、ゴムリング固定部１５ａとリンクバー固定部１５ｂとを有する。リンクバー固定部１５ｂは、図３に示すように、一対の側壁部により形成され、その間に後記するリンクバー２２の一端が固定される。
【００１６】
同様に、上記固定部材１６は、複数のセグメントから形成され、全体として管状構造物２の外形に対応した管状体を形成する。各セグメントは、ゴムリング固定部１６ａとリンクバー固定部１６ｂとを有する。リンクバー固定部１６ｂは、図２に示すように、一対の側壁部により形成され、その間にリンクバー２２の他端が固定される。
【００１７】
上記ゴムリング１７は、図１に示すように、２つの外側に向いた山１７ａ，１７ａと、山１７ａと山１７ａの間に位置する谷部１７ｂと、山１７ａより端側に位置する取付部１７ｃ，１７ｃを有する。ゴムリング１７は、一方の取付部１７ｃを固定部材１５のゴムリング固定部１５ａの上に配置し，他方の取付部１７ｃを固定部材１６のゴムリング固定部１６ａの上に配置し、その上にゴム押さえ板２０を配置し、半径方向外方からタッピングねじ２１によりゴム押さえ板２０を介して固定部材１５，１６に固定される。図１に示すゴムリング１７は、２つの外側に向いた山１７ａを有する構成であるが、ゴムリング１７は、３つ以上の外側に向いた山１７ａを有する構成であってもよい。
【００１８】
上記ゴムリング支持構造１８は、図１に示すように、両端部を固定部材１５．１６に固定されたリンクバー２２と、このリンクバー２２に取り付けられた耐圧プレート２３とを有する。リンクバー２２は、両端部に軸線方向に延びる長孔２４を有し、固定部材１５．１６に軸線方向に位置を調節自在に固定される。耐圧プレート２３は、上面にゴムリング受け部２５を有し、ゴムリング受け部２５でゴムリング１７の谷部１７ｂの底面を支持する。
【００１９】
上記スキンプレート１９は、可撓継手構造１への外部からの土砂の侵入を防ぐように作用する。
【００２０】
可撓継手構造１の管状構造物２，２への組み立て手順を図５ないし図１１により説明する。
可撓継手構造１の管状構造物２，２への組み立ての準備段階において、２つの管状構造物２，２を同一線上に配置し、一方の管状構造物２の短い外側管状部１３を他方の管状構造物２の長い内側管状部１０にゆるく嵌合させる。これにより、管状構造物２，２は、短い外側管状部１３と長い内側管状部１０と端面板５ａとに囲まれた可撓継手構造収容空間Ａを形成する。
【００２１】
可撓継手構造１の第１組立段階において、リンクバー２２を、図５に示すように、固定部材１５，１６の半径方向外方で管状構造物２の軸線に対して直交する方向に配置し、リンクバー２２を、管状構造物２の上方から矢印で示す方向に一方の管状構造物２に設けた固定部材１５と他方の管状構造物２に設けた固定部材１６との間を通して管状構造物２の内側管状部１０の上に配置する。
【００２２】
可撓継手構造１の第２組立段階において、図６に示すように、リンクバー２２を管状構造物２の内側管状部１０の上方で水平面内で９０度回し、リンクバー２２を、リンクバー２２の両端部を固定部材１５のリンクバー固定部１５ｂと固定部材１６のリンクバー固定部１６ｂに整合させ、矢印で示す上方向に持ち上げ、リンクバー２２の両端部を固定部材１５のリンクバー固定部１５ｂと固定部材１６のリンクバー固定部１６ｂに挿着する。
【００２３】
可撓継手構造１の第３組立段階において、図７に示すように、リンクバー２２の一方の長孔２４をリンクバー固定部１５ａの取付け孔１５ｃに整合し、リンクバー２２の他方の長孔２４をリンクバー固定部１６ａの取付け孔１６ｃに整合し、リンクバー２２を通常のボルトナット固定手段４０により固定部材１５と固定部材１６に位置を調節しながら固定する。
【００２４】
可撓継手構造１の第４組立段階において、図８に示すように、耐圧プレート２５を、複数の周方向に配置したリンクバー２２が橋絡するようにリンクバー２２の上に配置し、耐圧プレート２５を通常のボルト固定手段４１により上方向から各リンクバー２に固定する。
【００２５】
可撓継手構造１の第５組立段階において、図９に示すように、ゴムリング１７を、２つの外側に向いた山１７ａ，１７ａが固定部材１５と固定部材１６の間に位置し、谷部１７ｂが耐圧プレート２５の受け部２５上に位置し、一方の取付部１７ｃが固定部材１５のゴムリング固定部１５ａの上に位置し，他方の取付部１７ｃが固定部材１６のゴムリング固定部１６ａの上に位置するように配置する。
【００２６】
可撓継手構造１の第６組立段階において、図１０に示すように、ゴムリング１７の各取付部１７ｃの上にゴム押さえ板２０を配置し、ゴムリング１７を半径方向外方からタッピングねじ２１により固定部材１５，１６に固定する。ゴムリング１７は、谷部１７ｂを耐圧プレート２５の受け部２５に支持される。
【００２７】
可撓継手構造１の第７組立段階において、図１１に示すように、スキンプレート１９を、一方の管状構造物２の外側管状部１３と他方の管状構造物２の外面板４に点付け溶接により固定する。これにより、可撓継手構造１の管状構造物２，２への組み立てが完了する。
【００２８】
可撓継手構造１は、ゴムリング１７を耐圧プレート２５で支持することで、ゴムリング１７が高い外水圧に耐えることができる。
また、可撓継手構造１は、リンクバー２２に長孔２４を設けたことで、ゴムリング１７の片側の山１７ａが伸び切った場合に、リンクバー２２がゴムリング１７の片側の山１７ａがそれ以上伸びずにもう一方の山１７ａが伸びるリミッターとして作用する。
さらに、可撓継手構造１は、管状構造物２の外側で管状構造物２，２へ組み立てられるので、管状構造物２，２への取り付け作業を簡単に行うことができる。
【００２９】
図２に示す管状構造物２ａは、端面板５ａを設けた側に短い内面板延設部６を形成し、端面板５ｂを設けた側に長い外面板延設部７を形成している。
【００３０】
上記管状構造物２ａの一端側に位置する端面板５ａは、内面板３の外面３ａと外面板４の端面４ａに溶接手段により溶着される。端面板５ａの外面の半径方向中間位置に筒状板８が溶接手段により溶着される。さらに、内面板延設部６と筒状板８の先端面に端板９が溶接手段により溶着される。これにより、管状構造物２ａの一端側に端面板５ａから軸線方向外方に延びる短い内側管状部１０が形成される。
【００３１】
上記管状構造物２ａの他端側に位置する端面板５ｂは、外面板４の内面４ｂと内面板３の端面に溶接手段により溶着される。端面板５ｂの外面の半径方向中間位置に外面板延設部７に平行に軸線方向に延びる筒状板１１が溶接手段により溶着される。さらに、外面板延設部７と筒状板１１の先端面に端板１２が溶接手段により溶着される。これにより、管状構造物２ａの他端側に端面板５ｂから軸線方向外方に延びる長い外側管状部１３が形成される。
【００３２】
上記管状構造物２ａは、本体部分の一端側に長い外側管状部１３と、本体部分の他端側に短い内側管状部１０とを有する、したがって、管状構造物２ａ，２ａを連結するために、一方の管状構造物２ａの一端に設けた長い外側管状部１３を他方の管状構造物２ａの他端に設けた短い内側管状部１０にゆるく嵌合した時、一方の管状構造物２ａの長い外側管状部１３と短い内側管状部１０と端面板５ｂに囲まれた可撓継手構造収容空間Ｂが形成される。そして、可撓継手構造収容空間Ｂに可撓継手構造１ｂが配置される。また、一方の管状構造物２ａの外側管状部１３と他方の管状構造物２ａの内側管状部１０の間に形成される環状空間に筒状クッション材１４が配置される。
【００３３】
上記可撓継手構造１ａは、図２に示すように、一方の管状構造物２ａの端面板５ｂに固定される固定部材２６と、他方の管状構造物２ａの内側管状部１０の端板９に固定される固定部材２７と、固定部材２６と固定部材２７を橋絡するように配置されたゴムリング２８と、固定されたゴムリング２８の半径方向内側に配置されたゴムリング支持構造２９とを有する。
【００３４】
上記固定部材２６は、複数のセグメントから形成され、全体として管状構造物２の外形に対応した管状体を形成する。上記固定部材２７も、複数のセグメントから形成され、全体として管状構造物２の外形に対応した管状体を形成する。
【００３５】
上記ゴムリング２８は、図２に示すように、２つの外側に向いた山２８ａ，２８ａと、山２８ａと山２８ａの間に位置する谷部２８ｂと、山２８ｂａより端側に位置する取付部２８ｃ，２８ｃを有する。ゴムリング２８は、一方の取付部２８ｃを固定部材２６の下面に配置し，他方の取付部２８ｃｃを固定部材２７の下面に配置し、その下に配置したゴム押さえ板３０を介して半径方向内方からタッピングねじ３１により固定部材２６，２７に固定される。ゴムリング２８は、２つの外側に向いた山２８ａを有する構成であるが、ゴムリング２８は、３つ以上の外側に向いた山２８ａを有する構成であってもよい。
【００３６】
上記ゴムリング支持構造２９は、端面板５ｂの外面の固定部材２６より半径方向内側に固定されたベースブロック３２と、他方の管状構造物２に設けた内側管状部１０の端板９の固定部材２７より半径方向内側に固定されたベースブロック３３と、両端部をベースブロック３２．３３に固定されたリンクバー３４と、このリンクバー３４の上側面に取り付けられた耐圧プレート３５とを有する。リンクバー３４は、両端部に軸線方向に延びる長孔３６を有し、ベースブロック３２．３３に軸線方向に調節自在に固定される。耐圧プレート３５は、上面にゴムリング受け部３７を有し、ゴムリング受け部３７でゴムリング２８の谷部２８ｂの底面を支持する。
【００３７】
上記ベースブロック３２は、複数のセグメントから形成され、全体として管状構造物２の外形に対応した管状体を形成する。ベースブロック３２は、複数のリンクバー固定部３２ａを有する。各リンクバー固定部３２ａは、図３に示すように、その間にリンクバー３４の一端を固定する。
【００３８】
つぎに、可撓継手構造１ａの管状構造物２ａ，２ａへの組み立て手順を図１２ないし図１６により説明する。
可撓継手構造１ａの固定部材２６は、図１２に示すように、管状構造物２ａの他端に設けた端板５ｂに溶着され、可撓継手構造１ａの固定部材２７は、管状構造物２ａの一端に設けた内側管状部１０の端板９に溶着されている。
【００３９】
可撓継手構造１ａの第１組立段階において、図１３に示すように、ゴムリング２８を、２つの外側に向いた山２８ａ，２６ａが固定部材２６と固定部材２７の間に位置し、一方の取付部２８ｃが固定部材２６の下側に位置し，他方の取付部２８ｃが固定部材２７の下側に位置するように配置する。ゴムリング２８の各取付部２８ｃの下にゴム押さえ板３０を配置し、ゴムリング２８を半径方向内方からタッピングねじ３１により固定部材２６，２７に固定される。
【００４０】
可撓継手構造１ａの第２組立段階において、図１４に示すように、耐圧プレート３５を受け部３７がゴムリング２８の下方からゴムリング２８の谷部２８ｂの底面に当接するように配置する。
【００４１】
可撓継手構造１ａの第３組立段階において、図１５に示すように、リンクバー３４を耐圧プレート３５の下側から通常のボルト固定手段４２によりリンクバー３４に固定する。
【００４２】
可撓継手構造１ａの第４組立段階において、図１６に示すように、ベースブロック３２を通常のボルト固定手段４３により端板５ｂに固定し、ベースブロック３３を通常のボルト固定手段４３により端板９に固定する。可撓継手構造１ａは、リンクバー３４の一端をベースブロック３２のリンクバー固定部３２ａに装着し、リンクバー３４の他端をベースブロック３３のリンクバー固定部３３ａに装着し、リンクバー３４を通常のボルト固定手段４４によりベースブロック３２，３３に固定される。これにより、可撓継手構造１ａの管状構造物２ａ，２ａへの組み立てが完了する。
【００４３】
可撓継手構造１ａは、ゴムリング２８を耐圧プレート３５で支持することで、ゴムリング２８が高い外水圧に耐えることができる。
可撓継手構造１ａは、リンクバー３４に長孔３６を設けたことで、リンクバー３４が、ゴムリング２８の片側の山２８ａが伸び切った場合に、それ以上伸びずにもう一方の山２８ａが伸びるようリミッターとして作用する。
【００４４】
上記実施の形態では、可撓継手構造を管状構造物に適用した例を説明したが、可撓継手構造を管状構造物以外のボックスカルバートや可撓セグメントの高水圧用継手として用いることもできる。
【００４５】
また、上記実施の形態では、可撓継手構造１を図１に示す管状構造物２に、可撓継手構造１ａを図２に示す管状構造物２ａに適用した例を説明したが、可撓継手構造１と可撓継手構造１ａを、内側管状部と外側管状部を長くして、可撓継手構造収容空間Ａと可撓継手構造収容空間Ｂを形成した管状構造物に組み込むようにすることもできる。
【００４６】
【発明の効果】
以上述べたように、本発明による可撓継手構造は、ゴムリングの外側に向いた山が外力を圧縮として受けるので、ゴムリングの耐久性が改良され、また、ゴムリングが受ける荷重をゴムリング支持構造が受けるので、ゴムリングが高い外水圧に耐えることができる。
【図面の簡単な説明】
【図１】本発明に係る可撓継手構造を管状構造物に半径方向外方より組み立てた形態を示す断面図である。
【図２】本発明に係る可撓継手構造を管状構造物に半径方向内方より組み立てた形態を示す断面図である。
【図３】図１の可撓継手構造の底面拡大図である。
【図４】図２の可撓継手構造の底面拡大図である。
【図５】図１の可撓継手構造の第１組立段階を示す図である。
【図６】図１の可撓継手構造の第２組立段階を示す図である。
【図７】図１の可撓継手構造の第３組立段階を示す図である。
【図８】図１の可撓継手構造の第４組立段階を示す図である。
【図９】図１の可撓継手構造の第５組立段階を示す図である。
【図１０】図１の可撓継手構造の第６組立段階を示す図である。
【図１１】図１の可撓継手構造の組立完成段階を示す図である。
【図１２】図２の可撓継手構造の準備段階を示す図である。
【図１３】図２の可撓継手構造の第１組立段階を示す図である。
【図１４】図２の可撓継手構造の第２組立段階を示す図である。
【図１５】図２の可撓継手構造の第３組立段階を示す図である。
【図１６】図２の可撓継手構造の組立完成段階を示す図である。
【図１７】従来の可撓継手構造を推進管に取り付けた形態を示す断面図である。
【符号の説明】
１可撓継手構造
１ａ可撓継手構造
３内面板
４外面板
５ａ端板
５ｂ端板
１０内側管状部
１３外側管状部
１５固定部材
１６固定部材
１７ゴムリング
１８ゴムリング支持構造
１９スキンプレート
２２リンクバー
２３耐圧プレート
２５受け部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to, for example, a flexible joint structure that is attached to a tubular structure used for construction of a submarine tunnel and that allows relative displacement of the tubular structure due to an earthquake, ground deformation, or the like.
[0002]
[Prior art]
As shown in FIG. 17, an example of a flexible joint structure of a tubular structure used for an underground tunnel is to watertightly connect the front tube body 100, the rear tube body 101, the front tube body 100, and the rear tube body 101. A primary water-stopping rubber ring 102 having an inwardly-facing mountain 102a, and an inward-facing connection for watertightly connecting the front tubular body 100 and the rear tubular body 101 radially inward of the primary water-stopping rubber ring 102. A secondary waterproof rubber ring 103 having a mountain 103a and a skin plate 104 covering the outer periphery between the front tube body 100 and the rear tube body 101 are provided (for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-137694 (second page, FIG. 2)
[0004]
[Problems to be solved by the invention]
Before attaching the flexible joint structure to the tubular structure, attach a thrust receiving material and a shear prevention material (not shown) to the secondary waterproof rubber ring attachment site on the front and rear tubes, and attach to the tubular structure. After that, the shear preventing material and the thrust receiving material are removed, and the secondary water blocking rubber ring is fixed to the secondary water blocking rubber ring mounting site.
[0005]
In the flexible joint structure, the front tube body and the rear tube body are connected in a watertight manner by a water-stopping rubber ring having a mountain facing inward, and the mountain facing the inside of the water-stopping rubber ring receives external pressure as a tensile force. Therefore, the waterproof rubber ring lacks durability, and the external pressure is supported by a reinforcing cloth embedded in the waterproof rubber ring, so that the waterproof rubber ring cannot withstand high external water pressure.
[0006]
The present invention has been made in consideration of the above points, and an object thereof is to provide a flexible joint structure in which a rubber ring can withstand high external water pressure and the durability of the rubber ring is improved. .
[0007]
[Means for Solving the Problems]
The flexible joint structure of the present invention includes a fixing member fixed to one tubular body having an outer tubular portion at an end portion, a fixing member fixed to the other tubular body having an inner tubular portion at an end portion, A rubber ring placed between the pipe and the other pipe, a rubber ring support structure arranged radially inside the rubber ring, and attached to both pipes so as to cover the space between the pipe and the pipe A tubular space formed between the outer tubular portion and the inner tubular portion, the outer tubular portion of the one tubular body and the inner tubular portion of the other tubular body. The rubber ring has at least two crests facing outward and a trough located between the crests, and both ends are attached to each fixing member. fixed supports the valley with a rubber ring support structure, the rubber ring support structure, prior to A link bar fixed to the fixing member; and a pressure-resistant plate attached to the link bar and supporting a valley portion of the rubber ring. The link bar has a long hole extending in an axial direction. The position is fixed in an axial direction so as to be adjustable. This improves the durability of the rubber ring because the mountain facing the outside of the rubber ring receives external force as compression, and the rubber ring receives the force applied to the rubber ring with the rubber ring support structure. Can withstand.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view showing a state in which a flexible joint structure 1 according to the present invention is assembled to a structure 2 and a structure 2 from the outside in the radial direction, and FIG. 2 shows a flexible joint structure 1a according to the present invention. It is a figure which shows the state assembled to the structure 2 and the structure 2 from radial inside.
[0009]
The structure 2 is a tubular structure having a cross section such as a square shape, an oval shape, or a horseshoe shape, and basically includes an inner surface plate 3, an outer surface plate 4, and end surface plates 5a and 5b.
[0010]
In the tubular structure 2 shown in FIG. 1, a short inner surface plate extending portion 6 of the inner surface plate 3 extending axially outward from the outer surface plate 4 is formed on the side where the end surface plate 5 a is provided, and the end surface plate 5 b is provided. A long outer surface plate extending portion 7 of the outer surface plate 4 extending outward in the axial direction from the inner surface plate 3 is formed on the side.
[0011]
The end face plate 5 a located on one end side of the tubular structure 2 is disposed so as to contact the end face 4 a of the outer face plate 4 and contact the outer face 3 a of the inner face plate 3, and the outer face 3 a and the outer face plate 4 of the inner face plate 3. It is welded to the end face 4a by welding means. A cylindrical plate 8 extending in the axial direction parallel to the inner surface plate extending portion 6 is welded to the intermediate position in the radial direction of the outer surface of the end surface plate 5a by welding means. Further, the end plate 9 is welded to the inner plate extension portion 6 and the distal end surface of the cylindrical plate 8 by welding means. As a result, a long inner tubular portion 10 extending outward in the axial direction from the end face plate 5 a is formed on one end side of the tubular structure 2.
[0012]
The end face plate 5 b located on the other end side of the tubular structure 2 is disposed so as to abut on the end face of the inner face plate 3 and in contact with the inner face 4 b of the outer face plate 4, and between the inner face 4 b of the outer face plate 4 and the inner face plate 3. It is welded to the end face by welding means. A cylindrical plate 11 extending in the axial direction parallel to the outer surface plate extending portion 7 is welded to the intermediate position in the radial direction of the outer surface of the end surface plate 5b by welding means. Further, the end plate 12 is welded to the outer plate extension portion 7 and the distal end surface of the cylindrical plate 11 by welding means. As a result, a short outer tubular portion 13 extending outward in the axial direction from the end face plate 5b is formed on the other end side of the tubular structure 2.
[0013]
The tubular structure 2 has a short outer tubular portion 13 on one end side of the main body portion and a long inner tubular portion 10 on the other end side of the main body portion. Therefore, in order to connect the tubular structures 2 and 2, When the short outer tubular portion 13 provided at one end of one tubular structure 2 is loosely fitted to the long inner tubular portion 10 provided at the other end of the other tubular structure 2, the short outer tubular portion 13 and the long inner tubular portion are disposed. A flexible joint structure accommodation space A surrounded by the portion 10 and the end face plate 5a is formed. And the flexible joint structure 1 is arrange | positioned in the flexible joint structure accommodation space A. FIG. Further, a cylindrical cushion material 14 is disposed in an annular space formed between the outer tubular portion 13 of one tubular structure 2 and the inner tubular portion 10 of the other tubular structure 2.
[0014]
As shown in FIG. 1, the flexible joint structure 1 has a fixing member 15 fixed to an end plate 12 of the outer tubular portion 13 of one tubular structure 2 and an end face plate 5 a of the other tubular structure 2. The fixing member 16 to be fixed, the rubber ring 17 that bridges the fixing member 15 and the fixing member 16, the rubber ring support structure 18 disposed radially inside the fixed rubber ring 17, and the rubber ring 17 are covered. Thus, the outer tubular portion 13 of one tubular structure 2 and the skin plate 19 fixed to the outer surface plate 4 of the other tubular structure 2 by spot welding are provided.
[0015]
The fixing member 15 is formed of a plurality of segments, and forms a tubular body corresponding to the outer shape of the tubular structure 2 as a whole. Each segment has a rubber ring fixing portion 15a and a link bar fixing portion 15b. As shown in FIG. 3, the link bar fixing portion 15b is formed by a pair of side wall portions, and one end of a link bar 22 described later is fixed therebetween.
[0016]
Similarly, the fixing member 16 is formed of a plurality of segments, and forms a tubular body corresponding to the outer shape of the tubular structure 2 as a whole. Each segment has a rubber ring fixing portion 16a and a link bar fixing portion 16b. As shown in FIG. 2, the link bar fixing portion 16b is formed by a pair of side wall portions, and the other end of the link bar 22 is fixed therebetween.
[0017]
As shown in FIG. 1, the rubber ring 17 includes two outwardly facing peaks 17a and 17a, a valley portion 17b located between the peaks 17a and 17a, and a mounting portion located on the end side from the mountain 17a. 17c, 17c. In the rubber ring 17, one mounting portion 17 c is disposed on the rubber ring fixing portion 15 a of the fixing member 15, and the other mounting portion 17 c is disposed on the rubber ring fixing portion 16 a of the fixing member 16. A rubber pressing plate 20 is disposed, and is fixed to the fixing members 15 and 16 via the rubber pressing plate 20 by tapping screws 21 from the outside in the radial direction. The rubber ring 17 shown in FIG. 1 is configured to have two outwardly facing peaks 17a, but the rubber ring 17 may be configured to include three or more outwardly facing peaks 17a.
[0018]
As shown in FIG. 1, the rubber ring support structure 18 includes a link bar 22 having both ends fixed to a fixing member 15.16 and a pressure-resistant plate 23 attached to the link bar 22. The link bar 22 has long holes 24 extending in the axial direction at both ends, and is fixed to the fixing member 15.16 so that the position thereof can be adjusted in the axial direction. The pressure plate 23 has a rubber ring receiving portion 25 on the upper surface, and the rubber ring receiving portion 25 supports the bottom surface of the valley portion 17 b of the rubber ring 17.
[0019]
The skin plate 19 acts to prevent earth and sand from entering the flexible joint structure 1 from the outside.
[0020]
The procedure for assembling the flexible joint structure 1 into the tubular structures 2 and 2 will be described with reference to FIGS.
In the preparatory stage for assembling the flexible joint structure 1 into the tubular structures 2, 2, the two tubular structures 2, 2 are arranged on the same line, and the short outer tubular portion 13 of one tubular structure 2 is placed on the other It is loosely fitted to the long inner tubular portion 10 of the tubular structure 2. Thereby, the tubular structures 2 and 2 form the flexible joint structure accommodation space A surrounded by the short outer tubular portion 13, the long inner tubular portion 10 and the end face plate 5a.
[0021]
In the first assembly stage of the flexible joint structure 1, the link bar 22 is arranged in a direction perpendicular to the axis of the tubular structure 2 outside the fixing members 15 and 16 in the radial direction, as shown in FIG. The tubular structure passes through the link bar 22 between the fixing member 15 provided on one tubular structure 2 and the fixing member 16 provided on the other tubular structure 2 in the direction indicated by the arrow from above the tubular structure 2. 2 on the inner tubular part 10.
[0022]
In the second assembly stage of the flexible joint structure 1, as shown in FIG. 6, the link bar 22 is rotated 90 degrees in the horizontal plane above the inner tubular portion 10 of the tubular structure 2, and the link bar 22 is moved to the link bar 22. Both end portions of the link bar 22 are aligned with the link bar fixing portion 15b of the fixing member 15 and the link bar fixing portion 16b of the fixing member 16, and are lifted upward as indicated by arrows, and both end portions of the link bar 22 are linked to the link bar fixing portion of the fixing member 15. 15b and the link bar fixing part 16b of the fixing member 16 are inserted.
[0023]
In the third assembly stage of the flexible joint structure 1, as shown in FIG. 7, one long hole 24 of the link bar 22 is aligned with the mounting hole 15c of the link bar fixing portion 15a, and the other long hole of the link bar 22 is aligned. 24 is aligned with the mounting hole 16c of the link bar fixing portion 16a, and the link bar 22 is fixed to the fixing member 15 and the fixing member 16 by adjusting the position by the normal bolt and nut fixing means 40.
[0024]
In the fourth assembly stage of the flexible joint structure 1, as shown in FIG. 8, the pressure plate 25 is arranged on the link bar 22 so that the plurality of link bars 22 arranged in the circumferential direction are bridged. The plate 25 is fixed to each link bar 2 from above by normal bolt fixing means 41.
[0025]
In the fifth assembly stage of the flexible joint structure 1, as shown in FIG. 9, the crests 17a, 17a facing the outer side of the rubber ring 17 are located between the fixing member 15 and the fixing member 16, 17 b is positioned on the receiving portion 25 of the pressure-resistant plate 25, one mounting portion 17 c is positioned on the rubber ring fixing portion 15 a of the fixing member 15, and the other mounting portion 17 c is the rubber ring fixing portion 16 a of the fixing member 16. Position it so that it is located on top.
[0026]
In the sixth assembly stage of the flexible joint structure 1, as shown in FIG. 10, the rubber pressing plate 20 is disposed on each mounting portion 17 c of the rubber ring 17, and the rubber ring 17 is tapped screw 21 from the outside in the radial direction. To the fixing members 15 and 16. The rubber ring 17 is supported by the receiving portion 25 of the pressure-resistant plate 25 at the trough portion 17b.
[0027]
In the seventh assembly stage of the flexible joint structure 1, as shown in FIG. 11, the skin plate 19 is spot welded to the outer tubular portion 13 of one tubular structure 2 and the outer surface plate 4 of the other tubular structure 2. To fix. Thereby, the assembly to the tubular structures 2 and 2 of the flexible joint structure 1 is completed.
[0028]
The flexible joint structure 1 can withstand a high external water pressure by supporting the rubber ring 17 with the pressure plate 25.
Further, in the flexible joint structure 1, when the long hole 24 is provided in the link bar 22, when the peak 17 a on one side of the rubber ring 17 extends, the link 17 has a peak 17 a on one side of the rubber ring 17. It acts as a limiter in which the other peak 17a extends without further extension.
Furthermore, since the flexible joint structure 1 is assembled to the tubular structures 2 and 2 outside the tubular structure 2, the attaching operation to the tubular structures 2 and 2 can be easily performed.
[0029]
In the tubular structure 2a shown in FIG. 2, a short inner surface plate extending portion 6 is formed on the side where the end surface plate 5a is provided, and a long outer surface plate extending portion 7 is formed on the side where the end surface plate 5b is provided.
[0030]
The end surface plate 5a located on one end side of the tubular structure 2a is welded to the outer surface 3a of the inner surface plate 3 and the end surface 4a of the outer surface plate 4 by welding means. The cylindrical plate 8 is welded by welding means at a radially intermediate position on the outer surface of the end plate 5a. Further, the end plate 9 is welded to the inner plate extension portion 6 and the distal end surface of the cylindrical plate 8 by welding means. Thereby, the short inner tubular part 10 extended in the axial direction outward from the end surface board 5a is formed in the one end side of the tubular structure 2a.
[0031]
The end surface plate 5b located on the other end side of the tubular structure 2a is welded to the inner surface 4b of the outer surface plate 4 and the end surface of the inner surface plate 3 by welding means. A cylindrical plate 11 extending in the axial direction parallel to the outer surface plate extending portion 7 is welded to the intermediate position in the radial direction of the outer surface of the end surface plate 5b by welding means. Further, the end plate 12 is welded to the outer plate extension portion 7 and the distal end surface of the cylindrical plate 11 by welding means. Thereby, the long outer tubular portion 13 extending outward in the axial direction from the end face plate 5b is formed on the other end side of the tubular structure 2a.
[0032]
The tubular structure 2a has a long outer tubular portion 13 on one end side of the main body portion and a short inner tubular portion 10 on the other end side of the main body portion. Therefore, in order to connect the tubular structures 2a and 2a, When the long outer tubular part 13 provided at one end of one tubular structure 2a is loosely fitted to the short inner tubular part 10 provided at the other end of the other tubular structure 2a, the long outer side of one tubular structure 2a is A flexible joint structure accommodation space B surrounded by the tubular portion 13, the short inner tubular portion 10, and the end face plate 5b is formed. And the flexible joint structure 1b is arrange | positioned in the flexible joint structure accommodation space B. FIG. Moreover, the cylindrical cushion material 14 is arrange | positioned in the annular space formed between the outer side tubular part 13 of one tubular structure 2a, and the inner side tubular part 10 of the other tubular structure 2a.
[0033]
As shown in FIG. 2, the flexible joint structure 1a has a fixing member 26 fixed to an end face plate 5b of one tubular structure 2a and an end plate 9 of the inner tubular portion 10 of the other tubular structure 2a. A fixing member 27 to be fixed, a rubber ring 28 arranged so as to bridge the fixing member 26 and the fixing member 27, and a rubber ring support structure 29 arranged on the radially inner side of the fixed rubber ring 28. Have.
[0034]
The fixing member 26 is formed of a plurality of segments, and forms a tubular body corresponding to the outer shape of the tubular structure 2 as a whole. The fixing member 27 is also formed of a plurality of segments, and forms a tubular body corresponding to the outer shape of the tubular structure 2 as a whole.
[0035]
As shown in FIG. 2, the rubber ring 28 includes two outward-facing peaks 28a and 28a, a valley portion 28b located between the peaks 28a and 28a, and a mounting portion located on the end side of the mountain 28ba. 28c, 28c. In the rubber ring 28, one mounting portion 28c is disposed on the lower surface of the fixing member 26, the other mounting portion 28cc is disposed on the lower surface of the fixing member 27, and the rubber ring 28 is radially inward via a rubber pressing plate 30 disposed thereunder. The fixing members 26 and 27 are fixed by tapping screws 31 from one side. The rubber ring 28 is configured to have two outwardly facing peaks 28a, but the rubber ring 28 may be configured to include three or more outwardly facing peaks 28a.
[0036]
The rubber ring support structure 29 includes a base block 32 fixed radially inward of the fixing member 26 on the outer surface of the end face plate 5b, and a fixing member for the end plate 9 of the inner tubular portion 10 provided in the other tubular structure 2. 27, a base block 33 fixed radially inward, a link bar 34 having both ends fixed to the base block 32.33, and a pressure plate 35 attached to the upper side surface of the link bar 34. The link bar 34 has elongated holes 36 extending in the axial direction at both ends, and is fixed to the base block 32.33 so as to be adjustable in the axial direction. The pressure plate 35 has a rubber ring receiving portion 37 on the upper surface, and the rubber ring receiving portion 37 supports the bottom surface of the valley portion 28 b of the rubber ring 28.
[0037]
The base block 32 is formed of a plurality of segments, and forms a tubular body corresponding to the outer shape of the tubular structure 2 as a whole. The base block 32 has a plurality of link bar fixing portions 32a. As shown in FIG. 3, each link bar fixing | fixed part 32a fixes the end of the link bar 34 in the meantime.
[0038]
Next, a procedure for assembling the flexible joint structure 1a into the tubular structures 2a and 2a will be described with reference to FIGS.
As shown in FIG. 12, the fixing member 26 of the flexible joint structure 1a is welded to an end plate 5b provided at the other end of the tubular structure 2a, and the fixing member 27 of the flexible joint structure 1a is the tubular structure 2a. Are welded to an end plate 9 of the inner tubular portion 10 provided at one end of the inner tubular portion 10.
[0039]
In the first assembly stage of the flexible joint structure 1a, as shown in FIG. 13, the rubber ring 28 has two outwardly facing peaks 28a, 26a located between the fixing member 26 and the fixing member 27. The mounting portion 28 c is positioned below the fixing member 26, and the other mounting portion 28 c is positioned below the fixing member 27. A rubber pressing plate 30 is disposed under each mounting portion 28c of the rubber ring 28, and the rubber ring 28 is fixed to the fixing members 26 and 27 by tapping screws 31 from the inside in the radial direction.
[0040]
In the second assembly stage of the flexible joint structure 1a, as shown in FIG. 14, the pressure plate 35 is disposed so that the receiving portion 37 contacts the bottom surface of the valley portion 28b of the rubber ring 28 from below the rubber ring 28.
[0041]
In the third assembly stage of the flexible joint structure 1a, the link bar 34 is fixed to the link bar 34 by the normal bolt fixing means 42 from the lower side of the pressure plate 35 as shown in FIG.
[0042]
In the fourth assembly stage of the flexible joint structure 1a, as shown in FIG. 16, the base block 32 is fixed to the end plate 5b by the normal bolt fixing means 43, and the base block 33 is fixed to the end plate by the normal bolt fixing means 43. Fix to 9. In the flexible joint structure 1a, one end of the link bar 34 is attached to the link bar fixing portion 32a of the base block 32, the other end of the link bar 34 is attached to the link bar fixing portion 33a of the base block 33, and the link bar 34 is attached. It is fixed to the base blocks 32 and 33 by ordinary bolt fixing means 44. Thereby, the assembly to the tubular structures 2a and 2a of the flexible joint structure 1a is completed.
[0043]
The flexible joint structure 1a supports the rubber ring 28 with the pressure plate 35, so that the rubber ring 28 can withstand high external water pressure.
In the flexible joint structure 1a, when the long hole 36 is provided in the link bar 34, the link bar 34 does not extend any more when the peak 28a on one side of the rubber ring 28 is fully extended. Acts as a limiter to stretch.
[0044]
Although the example which applied the flexible joint structure to the tubular structure was demonstrated in the said embodiment, a flexible joint structure can also be used as a joint for high hydraulic pressure of box culverts other than a tubular structure, or a flexible segment.
[0045]
Moreover, although the flexible joint structure 1 was applied to the tubular structure 2 shown in FIG. 1 and the flexible joint structure 1a was applied to the tubular structure 2a shown in FIG. The structure 1 and the flexible joint structure 1a may be incorporated into a tubular structure in which the inner tubular portion and the outer tubular portion are elongated to form the flexible joint structure accommodation space A and the flexible joint structure accommodation space B. it can.
[0046]
【The invention's effect】
As described above, in the flexible joint structure according to the present invention, since the mountain facing the outer side of the rubber ring receives external force as compression, the durability of the rubber ring is improved and the load received by the rubber ring is improved. Since the support structure receives, the rubber ring can withstand high external water pressure.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration in which a flexible joint structure according to the present invention is assembled to a tubular structure from the outside in the radial direction.
FIG. 2 is a cross-sectional view showing a configuration in which a flexible joint structure according to the present invention is assembled to a tubular structure from the inside in the radial direction.
3 is an enlarged bottom view of the flexible joint structure of FIG. 1. FIG.
4 is an enlarged bottom view of the flexible joint structure of FIG. 2;
FIG. 5 is a view showing a first assembly stage of the flexible joint structure of FIG. 1;
6 is a view showing a second assembly stage of the flexible joint structure of FIG. 1; FIG.
7 is a view showing a third assembly stage of the flexible joint structure of FIG. 1; FIG.
8 is a view showing a fourth assembly stage of the flexible joint structure of FIG. 1; FIG.
FIG. 9 is a view showing a fifth assembly stage of the flexible joint structure of FIG. 1;
10 is a view showing a sixth assembly stage of the flexible joint structure of FIG. 1; FIG.
11 is a view showing an assembly completion stage of the flexible joint structure of FIG. 1;
12 is a diagram showing a preparation stage of the flexible joint structure of FIG. 2;
13 is a view showing a first assembly stage of the flexible joint structure of FIG. 2; FIG.
14 is a view showing a second assembly stage of the flexible joint structure of FIG. 2; FIG.
15 is a view showing a third assembly stage of the flexible joint structure of FIG. 2;
16 is a view showing an assembly completion stage of the flexible joint structure of FIG. 2;
FIG. 17 is a cross-sectional view showing a configuration in which a conventional flexible joint structure is attached to a propulsion pipe.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flexible joint structure 1a Flexible joint structure 3 Inner surface plate 4 Outer surface plate 5a End plate 5b End plate 10 Inner tubular part 13 Outer tubular part 15 Fixing member 16 Fixing member 17 Rubber ring 18 Rubber ring support structure 19 Skin plate 22 Link bar 23 Pressure-resistant plate 25 Receiving part

Claims

A fixing member fixed to one tubular body having an outer tubular portion at an end ;
A fixing member fixed to the other tubular body having an inner tubular portion at an end;
A rubber ring disposed between one tubular body and the other tubular body;
A rubber ring support structure disposed radially inward of the rubber ring;
A skin plate attached to both pipes so as to cover between the pipes and the pipes;
The outer tubular portion of the one tubular body and the inner tubular portion of the other tubular body are interposed via a cushion material disposed in a tubular space formed between the outer tubular portion and the inner tubular portion. Connected,
The rubber ring has at least two ridges facing outward, and valleys located between the ridges, fixing both ends to each fixing member, and supporting the valleys with a rubber ring support structure ;
The rubber ring support structure includes a link bar that is fixed to the fixing member, and a pressure-resistant plate that is attached to the link bar and supports a valley portion of the rubber ring,
The flexible joint structure , wherein the link bar has a long hole extending in an axial direction, and is fixed to the fixing member so that the position thereof is adjustable in the axial direction .

The flexible joint structure according to claim 1, wherein both ends of the rubber ring are fixed to each fixing member from the outside in the radial direction.

The breakdown voltage plate, flexible joint structure according to claim 1 you, characterized in that it is supported by the link bar.