JP4429545B2

JP4429545B2 - Device for attaching fittings to molds

Info

Publication number: JP4429545B2
Application number: JP2001133044A
Authority: JP
Inventors: 毅熾栄; 修石田; 武士河本; 博英橋本; 晃洋峯崎; 正憲若林; 清史今井; 厚井本
Original assignee: Taisei Corp
Current assignee: Taisei Corp
Priority date: 2001-04-27
Filing date: 2001-04-27
Publication date: 2010-03-10
Anticipated expiration: 2021-04-27
Also published as: JP2002326212A

Description

【０００１】
【発明の属する技術分野】
本発明は、セグメント等のコンクリート製品からなる構造体同士を接合させる継手金具（接合金具）を、構造体を成形する型枠に取り付ける継手金具の型枠への取付装置に関するものである。
【０００２】
【従来の技術】
近年、トンネルの覆工体を構成するセグメントの接合構造としては、ボルト・ナットに代わって、セグメント同士を突き合わせることにより、互いに接合されるものが用いられつつある。
この種の接合構造を図９に示すものを例にとって説明する。
図において、符号１は、雄型継手金具、符号２は、雌型継手金具である。雄型継手金具１は、円筒状に形成されたもので、セグメントＳの接合端面Ｓａから突出されている。雌型継手金具２は、雄型継手金具１よりも僅かに小径の円筒状に形成されたもので、セグメントＳに埋設されている。
【０００３】
そして、これら雄型継手金具１及び雌型継手金具２を有するセグメントＳ同士を接合させるには、雌型継手金具２に雄型継手金具１を嵌合させながら、セグメントＳの接合端面Ｓａ同士を突き合わせる。
このようにすると、雌型継手金具２への雄型継手金具１の嵌合力によってセグメントＳ同士が接合される。
なお、符号４は、雄型継手金具１の雌型継手金具２への挿入時に、雌型継手金具２の膨張を吸収する樹脂フォームである。
【０００４】
【発明が解決しようとする課題】
ところで、セグメントＳ，Ｓ同士は、雄型継手金具１及び雌型継手金具２が高精度に位置決めされていないと良好に接合されない。このため、セグメントＳを成形する際に、セグメントＳの成形用の型枠に、これら雄型継手金具１及び雌型継手金具２を精度良くかつ容易に取り付けることが可能な型枠への取付装置が要求されていた。
【０００５】
この発明は、上記事情に鑑みてなされたもので、互いに嵌合することにより構造体同士を接合させる継手金具を高精度にてかつ容易に型枠へ取り付けることが可能な継手金具の型枠への取付装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、請求項１記載の発明は、構造体の接合端面に設けられて構造体どうしを相互に接合する継手金具の型枠に対する取付装置において、固定ナットが埋設された先端に筒状ホルダを嵌合した継手金具を、型枠に取り付けられた外筒体の挿入孔に、筒状ホルダの口部に形成された外広りのテーパ外面を外筒体の口部に形成された外広りのテーパ内面に密接させて筒状ホルダとともに挿入し、外筒体と筒状ホルダの透孔に装通されて上記固定ナットに螺着された取付ボルトによって筒状ホルダと外筒体とを介して型枠に着脱自在に取り付けた構成とした。
【０００７】
この手段では、外筒体の外広りのテーパ内面に対する筒状ホルダの外広りのテーパ外面の密接によって筒状ホルダと継手金具（雄型継手金具）が外筒体の中央に正しく位置し、また外筒体と筒状ホルダ間の隙間が密閉される。この状態で取付ボルトにより継手金具を外筒体に固定して型枠に取り付ける。
【０００８】
請求項１記載の継手金具の型枠への取付装置において、外筒体の口部の内面と筒状ホルダの口部の外面のいずれか一方又は両方に、外筒体に筒状ホルダを同心円状に挿入させる密接リング面を突設することが好ましい（請求項２）。
この構成では、密接リング面は、テーパ内面及びテーパ外面と協働して筒状ホルダと継手金具を外筒体の中央に正しく位置させ、また外筒体と筒状ホルダ間の隙間を密閉する。
【０００９】
請求項１又は２記載の継手金具の型枠への取付装置において、筒状ホルダのテーパ外面の根本部分に、筒状ホルダと外筒体との間を液密にしてシールリングを嵌着することが好ましい（請求項３）。
この構成では、シールリングによって筒状ホルダと外筒体との間がより完全に密閉させるようになり、生コンクリート等の侵入が防止される。
【００１０】
請求項４記載の発明は、構造体の接合端面に設けられて構造体どうしを相互に接合する継手金具の型枠に対する取付装置において、内部にねじ孔を持つ筒状の継手金具を、型枠に取り付けられた固定筒の中心軸部に嵌着して開口端面を固定筒の当接面に当接させた状態で、固定筒の貫通孔に挿通されて上記ねじ孔に螺着された固定ボルトと、該固定筒の型枠に対して前記開口端面の反対側に位置する外周部に形成された雄ねじに螺着された取付ナットとにより固定筒を介して型枠に着脱自在に取り付けた構成とした。
【００１１】
この手段では、継手金具（雌型継手金具）は、固定筒の中心軸部に対する嵌着によって所定位置に正しく固定され、また固定筒の当接面に対する開口端面の当接によって口部を密接される。
【００１２】
請求項４記載の継手金具の型枠への取付装置において、当接面を、外周面を中心軸部に近づくにしたがって窄まるテーパ状にしたフランジに形成することが好ましい（請求項５）。
この構成では、構造体の成形後、固定筒を型枠と共に取り外すと、固定筒のフランジによって継手金具の外側に外広り状の孔が形成され、雌型継手金具への雄型継手金具の挿入が容易になる。
【００１３】
請求項４又は５記載の継手金具の型枠への取付装置において、継手金具内の固定ボルトに規制部材をねじ孔部分に当接して固定することが好ましい（請求項６）。
この構成では、ねじ孔に対する固定ボルトの強いねじ込みを規制部材が防ぐ。
【００１４】
【発明の実施の形態】
発明の実施の形態を添付図面を参照して説明する。
図１ないし図５は本発明に係る継手金具の型枠への取付装置の第１の実施の形態を示す。この取付装置は雄型継手金具１の取付けを対象とするもので、これには、外筒体６と、筒状ホルダ７と、補強リング８と、固定ナット９と、シールリング１１と、取付ボルト１２，及び締付ナット１３が用いられている。
【００１５】
外筒体６は有底円筒状で、口部に外広りのテーパ内面６ａと密接リング面６ｂが形成され、底部６ｃの中心に円形の透孔６ｄが形成されている。密接リング面６ｂは外筒体６の内側に帯状に突設されている。この外筒体６は、開口端６ｅを型枠１５の取付孔１５ａに嵌め込んで型枠１５に溶接等の手段で枠面に対して垂直に取り付けられる。
【００１６】
筒状ホルダ７も有底円筒状で、口部に外広りのテーパ外面７ａと溝７ｂが形成され、底部７ｃの中心に円形の透孔７ｄを有する。この筒状ホルダ７は、装着孔７ｆに雄型継手金具１の先端を嵌め入れた状態で外筒体６の挿入孔６ｆに同心円状に挿入して使用されるものであり、この挿入状態において、筒状ホルダ７のテーパ外面７ａが外筒体６のテーパ内面６ａに密接するとともに、筒状ホルダ７の外面が外筒体６の密接リング面６ｂに密接し、また筒状ホルダ７の底部７ｃが外筒体６の底部６ｃに当接するようになっている。外筒体６と筒状ホルダ７の底部６ｃ，７ｃはいずれも面取りされている。
【００１７】
補強リング８は、外筒体６の口部に嵌合されて型枠１５と外筒体６とに溶接して用いられる。この補強リング８によって型枠１５に対する外筒体６の固定強度、及び外筒体６と型枠１５の変形強度が強化され、外筒体６は長年月にわたって所定の状態を保つようになる。型枠１５はセグメント等のコンクリート構造体の成形に使用される周知のものである。
【００１８】
固定ナット９は、該固定ナット９に螺着される取付ボルト１２と協働して外筒体６に継手金具１を着脱自在に取り付けるもので、袋ナット状にされ、継手金具１の先端に埋め込まれて固定されている。継手金具１は円筒状に形成され、内部にモルタル等の充填材１６を予め詰めて固化されている。
【００１９】
シールリング１１は、外筒体６と筒状ホルダ７との間を液密にして生コンクリート等の侵入を防止するものであり、筒状ホルダ７の溝７ｂに嵌着して用いられる。
【００２０】
取付ボルト１２は、筒状ホルダ７の透孔７ｄから固定ナット９に螺着して固定鍔１２ａで継手金具１に筒状ホルダ７を固定し、外筒体６の透孔６ｄから外部に突き出されたねじ部分に締付ナット１３を螺着して外筒体６に筒状ホルダ７と継手金具１を固定することができるようになっている。固定鍔１２ａは、取付ボルト１２の所定位置に螺着されているだけでもよいが、通常は溶接等によって所定位置に固定される。取付ボルト１２は、端面にレンチ用の角孔１２ｂを持つ。
【００２１】
締付ナット１３には、外筒体６の底部６ｃを押圧する押圧フランジ１３ａと、外筒体６の透孔６ｄに嵌挿される面取りされた嵌挿部１３ｂが設けられている。このため、外筒体６の透孔６ｄに対する締付ナット１３の嵌挿部１３ｂの嵌挿状態において、外筒体６と筒状ホルダ７の透孔６ｄ，７ｄの中心軸線に取付ボルト１２の中心軸線が一致する。
【００２２】
次に、型枠１５に対する雄型継手金具１の取付け方法の一例を説明する。
まず、継手金具１の先端を筒状ホルダ７の装着孔７ｆに嵌め込み、筒状ホルダ７の透孔７ｄから取付ボルト１２を固定ナット９に螺着して継手金具１に筒状ホルダ７を一体に固定する。この装着固定操作は、腰を屈めたり膝を折ったりすることなく自然な姿勢で継手金具１と筒状ホルダ７を両手に持って容易かつ迅速に行うことができる。なお、筒状ホルダ７の装着孔７ｆに対する継手金具１先端の嵌込みに際して、必要があればそれらに離型剤を塗布する。
【００２３】
次いで、継手金具１を筒状ホルダ７と一緒に型枠１５の外筒体６の挿入孔６ｆに挿入し、取付ボルト１２の先端を透孔６ｄから外部に突出させる。この挿入作業は、筒状ホルダ７の底部７ｃが面取りされているため、これも容易かつ迅速に行うことができる。
【００２４】
この場合、外筒体６の密接リング面６ｂと筒状ホルダ７の外周面が接するとともに、外筒体６のテーパ内面６ａと筒状ホルダ７のテーパ外面７ａが密接するため、筒状ホルダ７と継手金具１は中心軸線を外筒体６の中心軸線に一致させて外筒体６の中心に正確に位置決めされ、継手金具１は型枠１５に垂直となる。しかも、外筒体６の密接リング面６ｂによって、外筒体６の挿入孔６ｆの内周面と筒状ホルダ７の外周面との間に僅かに隙間Ｃがあいているので、外筒体６や筒状ホルダ７に砂等の微細な異物が付着しているようなことがあっても、筒状ホルダ７を外筒体６に支障なく円滑に嵌挿することができる。
【００２５】
外筒体６のテーパ内面６ａに筒状ホルダ７のテーパ外面７ａが正しく密着した状態で、型枠１５から外側に突き出した継手金具１の突出長さが一定となる。シールリング１１は外筒体６と筒状ホルダ７の間を液密にする。
【００２６】
上記の位置決め状態において、取付ボルト１２に締付ナット１３を螺着し、継手金具１を型枠１５に筒状ホルダ７と外筒体６とを介して取り付けて位置決め状態を保つ（図１参照）。
【００２７】
その後、型枠１５内（図１で型枠１５の右側）に生コンクリートを流し込んで固化させ、セグメント等のコンクリート構造体Ｓ（図９）を周知のようにして成形する。継手金具１はコンクリートの固化により、構造体Ｓの所定位置に所定の突出量で枠面に対して垂直に一体に固定される。
脱型に際しては、締付ナット１３を緩めて取付ボルト１２を固定ナット９から外し、継手金具１を外筒体６及び筒状ホルダ７から相対的に引き抜くことは言うまでもない。
【００２８】
図６ないし図８は本発明に係る継手金具の型枠への取付装置の第２の実施の形態を示す。この取付装置は雌型継手金具２の取付けを対象とするものであり、これには、固定筒２１と、取着ナット２２と、固定ボルト２３と、規制部材２４と、補強リング２６が用いられている。
【００２９】
固定筒２１は円筒状で貫通孔２１ａを有し、一方の端部にフランジ２１ｂと当接面２１ｃ及び中心軸部２１ｄが形成され、他端部には雄ねじ２１ｅが形成されている。フランジ２１ｂの外周面２１ｆは先端側の中心軸部２１ｄに近づくにしたがって窄まるテーパ状とされている。当接面２１ｂは、フランジ２１ｂの中心軸部２１ｄ側の面とされている。中心軸部２１ｄは面取りされ、これに継手金具２がその開口端面２ａを当接面２１ｃに当接させて緩みなくぴったりと嵌合するようになっている。
【００３０】
この固定筒２１は、型枠１５の取付孔１５ｂに挿通されてフランジ２１ｂを型枠１５の内面に当接させた状態で、雄ねじ２１ｅに取着ナット２２を螺着されて型枠１５に垂直に取り付けられる。
【００３１】
固定ボルト２３は、固定筒２１の貫通孔２１ａに挿通して継手金具２のねじ孔２ｂに螺着することにより、固定筒２１を介して継手金具２を型枠１５に固定するものである。ねじ孔２ｂはナットの埋込み等によって継手金具２の中心位置に設けられている。
【００３２】
規制部材（ナット）２４は固定ボルト２３の所定位置に螺着して用いられ、固定ボルト２３による継手金具２の取付け時に継手金具２のねじ孔２ｂの周囲部分に当接して固定ボルト２３の過大な締付けを規制するものである。規制部材２４は、通常は固定ボルト２３に溶接等によって固定するので、必ずしもナットでなくてもよい。
【００３３】
補強リング２６は、型枠１５の取付孔１５ｂの部分を補強するものであり、通常は型枠１５に溶接によって固定される。
継手金具２にはポリスチレン等の樹脂フォーム４が従来同様に嵌合され、雄型継手金具１の雌型継手金具２への挿入時に生じる雌型継手金具２の膨張を可能にしている。符号２７は座金である。
【００３４】
型枠１５に対する雌型継手金具２の取付け方法の一例を説明すると、まず、固定筒２１の貫通孔２１ａに固定ボルト２３を挿通させてその先端に規制部材２４を取り付けてから、その固定筒２１を型枠１５の取付孔１５ｂに雄ねじ２１ｅを先にして内側から挿通させ、型枠１５の外側に突き出した雄ねじ２１ｅに取着ナット２２を螺着して型枠１５に固定筒２１を固定する。この固定状態では、固定筒２１のフランジ２１ｂが、型枠１５の内面に当接するため、固定筒２１の中心軸線は型枠１５に対して垂直となる。
【００３５】
次に、予め樹脂フォーム４を嵌合した継手金具２を固定筒２１の中心軸部２１ｄに嵌着してその開口端面２ａを当接面２１ｃに当接させる。最後に固定ボルト２３を継手金具２のねじ孔２ｂに螺着することにより、型枠１５に継手金具２を固定筒２１を介して取り付ける。この際、規制部材２４が固定ボルト２３の過大な締付けを規制するため、継手金具２が変形することなく型枠１５に垂直に取り付けられることになる（図６参照）。
【００３６】
継手金具２の取付け後、型枠１５内に生コンクリートを流し込んで固化させ、セグメント等のコンクリート構造体Ｓを従来同様に成形する。継手金具２はコンクリートの固化により、構造体Ｓ内の所定位置に枠面に対し垂直に一体に埋設される。脱型に際しては、固定ボルト２３を緩めてねじ孔２ｂから外し、継手金具２から固定筒２１と固定ボルト２３を型枠１５と一緒に相対的に引き抜く。引抜き後は、構造体の接合端面に固定筒２１のフランジ２１ｂの外周面２１ｆによって、継手金具２に連通した外広りのテーパ孔が形成される。
【００３７】
本発明において、図１の外筒体６を溶接によらずに、例えば図６の固定筒２１のようにねじによって型枠１５に着脱自在に取り付けることもでき、また図６の固定筒２１をねじによらずに、例えば図１の外筒体６のように型枠１５に溶接することもできる。
【００３８】
外筒体６と、筒状ホルダ７、固定筒２１、補強リング８，２６等は型枠１５と同様に、一般には鋼等の金属材料で製造される。筒状ホルダ７は金属材料の他にポリウレタンやポマライト等の材料で製造することもある。なお、継手金具１，２の取付け手順は前記に限られるものではない。密接リング面を外筒体６に設けずに筒状ホルダ７の外面に設けることも、外筒体６と筒状ホルダ７の両方に設けて互いに密接させることもできる。
【００３９】
【発明の効果】
以上説明したように、請求項１又は４記載の発明によれば、継手金具を型枠の所定位置に所定の状態で精度よくかつ容易に取り付けることができる。このため、構造体の良好な接合が可能になる。
【００４０】
請求項１記載の継手金具の型枠への取付装置において、外筒体の口部の内面と筒状ホルダの口部の外面のいずれか一方又は両方に、外筒体に筒状ホルダを同心円状に挿入させる密接リング面を突設すると、筒状ホルダと継手金具を外筒体の中央に一層正しく位置させることができるようになるとともに、密接リング面以外の外筒体と筒状ホルダとの間に隙間が生じて砂等の付着異物による支障を排除することができる。
【００４１】
請求項１又は２記載の継手金具の型枠への取付装置において、筒状ホルダのテーパ外面の根本部分に、筒状ホルダと外筒体との間を液密にしてシールリングを嵌着すると、筒状ホルダと外筒体間の密閉度が向上し、生コンクリートの侵入が防止される。
【００４２】
請求項４記載の継手金具の型枠への取付装置において、当接面を、外周面を中心軸部に近づくにしたがって窄まるテーパ状にしたフランジに形成した場合は、構造体の接合端面に外広り状のテーパ孔が雌型継手金具に連通して形成されることになり、雌型継手金具に対する雄型継手金具の挿入、つまり接合操作が容易になる。
【００４３】
請求項４又は５記載の継手金具の型枠への取付装置において、継手金具内の固定ボルトに規制部材をねじ孔部分に当接して固定した構成では、継手金具のねじ孔に対する固定ボルトの過大なねじ込みが防止され、継手金具が変形することなく所定の状態で取り付けられるようになる。
【図面の簡単な説明】
【図１】本発明に係る継手金具の型枠への取付装置の第１の実施の形態を示す断面図である。
【図２】図１の外筒体の断面図である。
【図３】図１の筒状ホルダの一部分を破断した図である。
【図４】図１の取付ボルトの図である。
【図５】図１の締付ナットの図である。
【図６】本発明に係る継手金具の型枠への取付装置の第２の実施の形態を示す断面図である。
【図７】図６の固定筒の半断面図である。
【図８】図６の固定ボルトの図である。
【図９】雄型継手金具と雌型継手金具の説明図である。
【符号の説明】
ＳセグメントＳａ接合端面１雄型継手金具２雌型継手金具２ａ開口端面２ｂねじ孔６外筒体７筒体ホルダ６ａテーパ内面６ｂ密接リング面６ｃ，７ｃ底部６ｄ，７ｄ透孔６ｅ開口端６ｆ挿入孔７ａテーパ外面７ｂ溝７ｆ装着孔８補強リング９固定ナット１１シールリング１２取付ボルト１３締付ナット１５型枠１５ａ，１５ｂ取付孔２１固定筒２１ａ貫通孔２１ｂフランジ２１ｃ当接面２１ｄ中心軸部２１ｅ雄ねじ２１ｆ外周面２２取着ナット２３固定ボルト２４規制部材Ｃ隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for attaching a joint fitting to a form for attaching a joint fitting (joint fitting) for joining structures made of concrete products such as segments to a form for molding the structure.
[0002]
[Prior art]
In recent years, instead of bolts and nuts, those joined to each other by abutting the segments are being used as the joining structure of the segments constituting the tunnel lining body.
This type of joint structure will be described with reference to the example shown in FIG.
In the figure, reference numeral 1 denotes a male joint fitting, and reference numeral 2 denotes a female joint fitting. The male joint fitting 1 is formed in a cylindrical shape and protrudes from the joining end surface Sa of the segment S. The female joint fitting 2 is formed in a cylindrical shape slightly smaller in diameter than the male joint fitting 1 and is embedded in the segment S.
[0003]
In order to join the segments S having the male joint fitting 1 and the female joint fitting 2 to each other, the joining end surfaces Sa of the segments S are connected to each other while the male joint fitting 1 is fitted to the female joint fitting 2. Match.
In this way, the segments S are joined by the fitting force of the male joint fitting 1 to the female joint fitting 2.
Reference numeral 4 denotes a resin foam that absorbs the expansion of the female joint fitting 2 when the male joint fitting 1 is inserted into the female joint fitting 2.
[0004]
[Problems to be solved by the invention]
By the way, the segments S, S cannot be joined well unless the male joint fitting 1 and the female joint fitting 2 are positioned with high accuracy. Therefore, when forming the segment S, a mold for molding the segment S, these male joint fitting 1 and the female joint fitting device of the fitting 2 to accurately and which can be easily attached to formwork Was requested.
[0005]
The present invention has been made in view of the above circumstances, and to a form of a joint fitting that can be attached to a form with high accuracy and easily a joint fitting for joining structures together by fitting together. It is an object to provide a mounting apparatus .
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention according to claim 1 is a mounting device for a joint metal fitting that is provided on a joint end surface of a structure and joins the structures to each other. The fitting fitting fitted with the cylindrical holder is inserted into the insertion hole of the outer cylindrical body attached to the mold, and the outer wide tapered outer surface formed at the mouth of the cylindrical holder is attached to the mouth of the outer cylindrical body. The cylindrical holder is inserted into the outer surface of the outer wide tapered inner surface with the cylindrical holder, and is inserted into the through hole of the outer cylindrical body and the cylindrical holder and screwed to the fixing nut. It was set as the structure attached to the formwork through the outer cylinder body so that attachment or detachment was possible.
[0007]
With this means, the cylindrical holder and the fitting (male fitting) are correctly positioned at the center of the outer cylinder by the close contact of the outer surface of the outer cylinder with the tapered outer surface of the outer cylinder. In addition, the gap between the outer cylinder and the cylindrical holder is sealed. In this state, the fitting is fixed to the outer cylinder with the mounting bolt and attached to the mold.
[0008]
The apparatus for attaching a joint fitting to a mold according to claim 1, wherein the cylindrical holder is concentrically arranged on one or both of the inner surface of the mouth portion of the outer cylindrical body and the outer surface of the mouth portion of the cylindrical holder. It is preferable to project a close ring surface to be inserted in a shape (claim 2).
In this configuration, the close ring surface cooperates with the taper inner surface and the taper outer surface so that the cylindrical holder and the fitting are correctly positioned at the center of the outer cylinder, and also seals the gap between the outer cylinder and the cylindrical holder. .
[0009]
3. The apparatus for attaching a joint fitting to a mold according to claim 1 or 2, wherein a seal ring is fitted to a root portion of a tapered outer surface of the cylindrical holder so that the space between the cylindrical holder and the outer cylindrical body is liquid-tight. (Claim 3).
In this configuration, the seal ring allows the space between the cylindrical holder and the outer cylindrical body to be more completely sealed, and intrusion of ready-mixed concrete or the like is prevented.
[0010]
According to a fourth aspect of the present invention, there is provided an attachment device for a joint fitting mold that is provided on a joining end face of a structure and joins the structures to each other. The fixed tube is inserted into the through hole of the fixed tube and is screwed into the screw hole in a state where the open end surface is in contact with the contact surface of the fixed tube and is fitted to the central shaft portion of the fixed tube attached to A bolt and a mounting nut screwed to a male screw formed on an outer peripheral portion located on the opposite side of the opening end face with respect to the mold of the fixed cylinder are detachably attached to the mold via the fixed cylinder. The configuration.
[0011]
In this means, the joint fitting (female joint fitting) is correctly fixed at a predetermined position by fitting to the central shaft portion of the fixed cylinder, and the mouth portion is brought into close contact by the contact of the opening end surface with the contact surface of the fixed cylinder. The
[0012]
In the apparatus for attaching a joint fitting to a mold according to claim 4, it is preferable that the abutting surface is formed on a flange having a tapered shape whose outer peripheral surface becomes narrower as it approaches the central shaft portion (claim 5).
In this configuration, when the fixed cylinder is removed together with the mold after the structure is formed, an outer wide hole is formed on the outer side of the joint fitting by the flange of the fixed cylinder, and the male joint fitting to the female joint fitting is formed. Easy to insert.
[0013]
In the attachment device to the formwork of the joint fitting according to claim 4 or 5, it is preferable that the restricting member is fixed to the fixing bolt in the joint fitting in contact with the screw hole portion (claim 6).
In this configuration, the restricting member prevents the fixing bolt from being strongly screwed into the screw hole.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 5 show a first embodiment of an apparatus for attaching a joint fitting to a mold according to the present invention. This attachment device is intended for attachment of the male fitting 1, and includes an outer cylindrical body 6, a cylindrical holder 7, a reinforcing ring 8, a fixing nut 9, a seal ring 11, and an attachment. Bolts 12 and tightening nuts 13 are used.
[0015]
The outer cylindrical body 6 has a bottomed cylindrical shape, and has a tapered inner surface 6a and a close ring surface 6b formed at the mouth portion, and a circular through hole 6d formed at the center of the bottom portion 6c. The close ring surface 6 b is projected in a band shape inside the outer cylindrical body 6. The outer cylindrical body 6 is attached perpendicularly to the frame surface by means of welding or the like by fitting the opening end 6e into the mounting hole 15a of the mold 15 and welding.
[0016]
The cylindrical holder 7 also has a bottomed cylindrical shape, and has a tapered outer surface 7a and a groove 7b formed at the mouth, and a circular through hole 7d at the center of the bottom 7c. The cylindrical holder 7 is used by being inserted concentrically into the insertion hole 6f of the outer cylindrical body 6 with the tip of the male fitting 1 fitted in the mounting hole 7f. The tapered outer surface 7a of the cylindrical holder 7 is in intimate contact with the tapered inner surface 6a of the outer cylindrical body 6, the outer surface of the cylindrical holder 7 is in close contact with the intimate ring surface 6b of the outer cylindrical body 6, and the bottom of the cylindrical holder 7 7 c comes into contact with the bottom 6 c of the outer cylinder 6. Both the outer cylindrical body 6 and the bottom portions 6c and 7c of the cylindrical holder 7 are chamfered.
[0017]
The reinforcing ring 8 is fitted to the mouth of the outer cylindrical body 6 and welded to the mold 15 and the outer cylindrical body 6. The reinforcing ring 8 strengthens the fixing strength of the outer cylinder 6 with respect to the mold 15 and the deformation strength of the outer cylinder 6 and the mold 15 so that the outer cylinder 6 maintains a predetermined state for many years. The mold 15 is a well-known one used for forming a concrete structure such as a segment.
[0018]
The fixing nut 9 detachably attaches the fitting 1 to the outer cylindrical body 6 in cooperation with the mounting bolt 12 screwed to the fixing nut 9. Embedded and fixed. The joint fitting 1 is formed in a cylindrical shape, and is filled with a filler 16 such as mortar in advance.
[0019]
The seal ring 11 is liquid-tight between the outer cylindrical body 6 and the cylindrical holder 7 to prevent intrusion of ready-mixed concrete and the like, and is used by being fitted into the groove 7 b of the cylindrical holder 7.
[0020]
The mounting bolt 12 is screwed into the fixing nut 9 from the through hole 7d of the cylindrical holder 7, and the cylindrical holder 7 is fixed to the fitting 1 with the fixing rod 12a, and protrudes to the outside from the through hole 6d of the outer cylindrical body 6. A tightening nut 13 is screwed onto the threaded portion so that the cylindrical holder 7 and the fitting 1 can be fixed to the outer cylindrical body 6. The fixing rod 12a may be only screwed into a predetermined position of the mounting bolt 12, but is usually fixed at a predetermined position by welding or the like. The mounting bolt 12 has a wrench square hole 12b on its end surface.
[0021]
The tightening nut 13 is provided with a pressing flange 13 a that presses the bottom portion 6 c of the outer cylindrical body 6 and a chamfered fitting insertion portion 13 b that is fitted into the through hole 6 d of the outer cylindrical body 6. For this reason, in the insertion state of the fitting insertion portion 13b of the tightening nut 13 with respect to the through hole 6d of the outer cylindrical body 6, the mounting bolt 12 is attached to the central axis of the outer cylinder 6 and the through holes 6d and 7d of the cylindrical holder 7. The center axis line matches.
[0022]
Next, an example of a method for attaching the male joint fitting 1 to the mold 15 will be described.
First, the tip of the fitting 1 is fitted into the mounting hole 7 f of the cylindrical holder 7, and the mounting bolt 12 is screwed to the fixing nut 9 from the through hole 7 d of the cylindrical holder 7, so that the cylindrical holder 7 is integrated with the fitting 1. Secure to. This mounting and fixing operation can be performed easily and quickly by holding the fitting 1 and the cylindrical holder 7 in both hands in a natural posture without bending the waist or bending the knee. In addition, when fitting the tip of the fitting 1 into the mounting hole 7f of the cylindrical holder 7, if necessary, a release agent is applied to them.
[0023]
Next, the joint fitting 1 is inserted into the insertion hole 6f of the outer cylinder 6 of the mold 15 together with the cylindrical holder 7, and the tip of the mounting bolt 12 is projected outside through the through hole 6d. Since the bottom portion 7c of the cylindrical holder 7 is chamfered, this insertion operation can be easily and quickly performed.
[0024]
In this case, the tight ring surface 6b of the outer cylindrical body 6 and the outer peripheral surface of the cylindrical holder 7 are in contact with each other, and the tapered inner surface 6a of the outer cylindrical body 6 and the tapered outer surface 7a of the cylindrical holder 7 are in close contact with each other. The fitting 1 is positioned accurately at the center of the outer cylinder 6 with the center axis aligned with the center axis of the outer cylinder 6, and the fitting 1 is perpendicular to the mold 15. Moreover, since the tight ring surface 6b of the outer cylindrical body 6 has a slight gap C between the inner peripheral surface of the insertion hole 6f of the outer cylindrical body 6 and the outer peripheral surface of the cylindrical holder 7, the outer cylindrical body Even if fine foreign matters such as sand are attached to 6 and the cylindrical holder 7, the cylindrical holder 7 can be smoothly inserted into the outer cylindrical body 6 without hindrance.
[0025]
In the state where the tapered outer surface 7a of the cylindrical holder 7 is in close contact with the tapered inner surface 6a of the outer cylindrical body 6, the protruding length of the joint fitting 1 protruding outward from the mold 15 is constant. The seal ring 11 makes the space between the outer cylindrical body 6 and the cylindrical holder 7 liquid-tight.
[0026]
In the above positioning state, the tightening nut 13 is screwed onto the mounting bolt 12, and the fitting 1 is attached to the mold 15 via the cylindrical holder 7 and the outer cylindrical body 6 (see FIG. 1). ).
[0027]
Thereafter, the ready-mixed concrete is poured into the mold 15 (on the right side of the mold 15 in FIG. 1) to be solidified, and a concrete structure S (FIG. 9) such as a segment is formed as is well known. The joint fitting 1 is integrally fixed at a predetermined position of the structure S with a predetermined protrusion amount perpendicular to the frame surface by solidification of the concrete.
In removing the mold, it goes without saying that the fastening nut 13 is loosened, the mounting bolt 12 is removed from the fixing nut 9, and the joint fitting 1 is relatively pulled out from the outer cylindrical body 6 and the cylindrical holder 7.
[0028]
6 to 8 show a second embodiment of an apparatus for attaching a joint fitting to a mold according to the present invention. This attachment device is intended for attachment of the female joint fitting 2, and uses a fixing cylinder 21, a mounting nut 22, a fixing bolt 23, a regulating member 24, and a reinforcing ring 26. ing.
[0029]
The fixed cylinder 21 is cylindrical and has a through hole 21a. A flange 21b, a contact surface 21c, and a central shaft portion 21d are formed at one end, and a male screw 21e is formed at the other end. The outer peripheral surface 21f of the flange 21b has a tapered shape that becomes narrower as it approaches the central shaft portion 21d on the distal end side. The contact surface 21b is a surface on the side of the central shaft portion 21d of the flange 21b. The central shaft portion 21d is chamfered, and the fitting 2 is brought into contact with the abutting surface 21c so that the fitting end 2 fits tightly without loosening.
[0030]
The fixed cylinder 21 is inserted into the mounting hole 15b of the mold 15 and the mounting nut 22 is screwed onto the male screw 21e in a state where the flange 21b is in contact with the inner surface of the mold 15. Attached to.
[0031]
The fixing bolt 23 is inserted into the through hole 21 a of the fixing cylinder 21 and screwed into the screw hole 2 b of the fitting 2 to fix the fitting 2 to the mold 15 via the fixing cylinder 21. The screw hole 2b is provided at the center position of the fitting 2 by embedding a nut or the like.
[0032]
The regulating member (nut) 24 is used by being screwed to a predetermined position of the fixing bolt 23, and comes into contact with the peripheral portion of the screw hole 2 b of the fitting 2 when the fitting 2 is attached by the fixing bolt 23. It is intended to regulate proper tightening. Since the regulating member 24 is normally fixed to the fixing bolt 23 by welding or the like, it is not always necessary to be a nut.
[0033]
The reinforcing ring 26 reinforces the portion of the mounting hole 15b of the mold 15 and is usually fixed to the mold 15 by welding.
A resin foam 4 made of polystyrene or the like is fitted to the joint fitting 2 in the same manner as in the past, and the female joint fitting 2 which is generated when the male joint fitting 1 is inserted into the female joint fitting 2 can be expanded. Reference numeral 27 denotes a washer.
[0034]
An example of a method of attaching the female joint fitting 2 to the mold 15 will be described. First, the fixing bolt 23 is inserted into the through hole 21a of the fixed cylinder 21 and the restricting member 24 is attached to the tip thereof. Is inserted into the mounting hole 15b of the mold 15 from the inside with the male screw 21e first, and the fixing nut 21 is fixed to the mold 15 by screwing the mounting nut 22 onto the male screw 21e protruding to the outside of the mold 15. . In this fixed state, the flange 21 b of the fixed cylinder 21 comes into contact with the inner surface of the mold 15, so that the central axis of the fixed cylinder 21 is perpendicular to the mold 15.
[0035]
Next, the fitting 2 fitted with the resin foam 4 in advance is fitted to the central shaft portion 21d of the fixed cylinder 21, and the opening end surface 2a is brought into contact with the contact surface 21c. Finally, the fixing bolt 23 is screwed into the screw hole 2 b of the joint fitting 2, so that the joint fitting 2 is attached to the mold 15 via the fixed cylinder 21. At this time, since the restricting member 24 restricts excessive tightening of the fixing bolt 23, the joint fitting 2 is attached vertically to the mold 15 without deformation (see FIG. 6).
[0036]
After the fitting 2 is attached, the ready-mixed concrete is poured into the mold 15 to be solidified, and a concrete structure S such as a segment is formed in the same manner as before. The joint fitting 2 is integrally embedded at a predetermined position in the structure S perpendicular to the frame surface by solidification of the concrete. When removing the mold, the fixing bolt 23 is loosened and removed from the screw hole 2 b, and the fixing cylinder 21 and the fixing bolt 23 are relatively pulled out together with the mold 15 from the joint fitting 2. After the drawing, an outer wide tapered hole communicating with the joint fitting 2 is formed on the joint end surface of the structure by the outer peripheral surface 21f of the flange 21b of the fixed cylinder 21.
[0037]
In the present invention, the outer cylindrical body 6 in FIG. 1 can be detachably attached to the mold 15 by screws, for example, like a fixed cylinder 21 in FIG. 6 without welding, and the fixed cylinder 21 in FIG. For example, the outer casing 6 shown in FIG. 1 can be welded to the mold 15 without using screws.
[0038]
The outer cylinder 6, the cylindrical holder 7, the fixed cylinder 21, the reinforcing rings 8 and 26 and the like are generally manufactured of a metal material such as steel, like the mold 15. The cylindrical holder 7 may be made of a material such as polyurethane or pomalite in addition to a metal material. In addition, the attachment procedure of the joint metal fittings 1 and 2 is not restricted to the above. The close ring surface may be provided on the outer surface of the cylindrical holder 7 without being provided on the outer cylindrical body 6, or may be provided on both the outer cylindrical body 6 and the cylindrical holder 7 so as to be in close contact with each other.
[0039]
【The invention's effect】
As described above, according to the first or fourth aspect of the present invention, the fitting can be accurately and easily attached to the predetermined position of the mold in a predetermined state. For this reason, the structure can be satisfactorily bonded.
[0040]
The apparatus for attaching a joint fitting to a mold according to claim 1, wherein the cylindrical holder is concentrically arranged on one or both of the inner surface of the mouth portion of the outer cylindrical body and the outer surface of the mouth portion of the cylindrical holder. When projecting the close ring surface to be inserted in a shape, the cylindrical holder and the fitting can be positioned more correctly in the center of the outer cylindrical body, and the outer cylindrical body other than the close ring surface and the cylindrical holder A gap is generated between them, and troubles caused by adhered foreign substances such as sand can be eliminated.
[0041]
In the attachment device to the formwork of the joint fitting according to claim 1 or 2, when the seal ring is fitted to the root portion of the tapered outer surface of the cylindrical holder so that the space between the cylindrical holder and the outer cylindrical body is liquid-tight. The degree of sealing between the cylindrical holder and the outer cylindrical body is improved, and the intrusion of ready-mixed concrete is prevented.
[0042]
In the attachment device to the formwork of the joint fitting according to claim 4, when the contact surface is formed on a flange having a tapered shape that becomes narrower as the outer peripheral surface approaches the central shaft portion, The outer wide tapered hole is formed in communication with the female joint fitting, and the insertion of the male joint fitting into the female joint fitting, that is, the joining operation is facilitated.
[0043]
6. The apparatus for attaching a joint fitting to a mold according to claim 4 or 5, wherein in the configuration in which the regulating member is fixed to the fixing bolt in the joint fitting in contact with the screw hole portion, the fixing bolt is excessively large relative to the screw hole of the joint fitting. Can be prevented from being screwed in, and the fitting can be attached in a predetermined state without deformation.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first embodiment of an apparatus for attaching a joint fitting to a mold according to the present invention.
FIG. 2 is a cross-sectional view of the outer cylinder of FIG.
FIG. 3 is a view in which a part of the cylindrical holder of FIG. 1 is broken.
4 is a view of the mounting bolt of FIG. 1. FIG.
5 is a view of the tightening nut of FIG. 1. FIG.
FIG. 6 is a cross-sectional view showing a second embodiment of an apparatus for attaching a joint fitting to a mold according to the present invention.
7 is a half sectional view of the fixed cylinder of FIG. 6;
8 is a view of the fixing bolt of FIG. 6. FIG.
FIG. 9 is an explanatory view of a male joint fitting and a female joint fitting.
[Explanation of symbols]
S segment Sa Joining end face 1 Male joint fitting 2 Female joint fitting 2a Open end face 2b Screw hole 6 Outer cylinder body 7 Cylindrical holder 6a Tapered inner face 6b Close ring surface 6c, 7c Bottom 6d, 7d Through hole 6e Open end 6f Insertion Hole 7a Tapered outer surface 7b Groove 7f Mounting hole 8 Reinforcement ring 9 Fixing nut 11 Seal ring 12 Mounting bolt 13 Tightening nut 15 Formwork 15a, 15b Mounting hole 21 Fixed cylinder 21a Through hole 21b Flange 21c Contact surface 21d Center shaft portion 21e Male screw 21f Outer peripheral surface 22 Mounting nut 23 Fixing bolt 24 Restriction member C Clearance

Claims

A mounting device for a mold of a fitting that is provided on a joining end surface of a structure and joins the structures to each other,
A fitting with a cylindrical holder fitted to the tip with a fixed nut embedded in the insertion hole of the outer cylinder attached to the formwork has an outer taper outer surface formed at the mouth of the cylindrical holder. Inserted together with the cylindrical holder in close contact with the tapered inner surface of the outer tube formed at the mouth of the outer cylinder, inserted through the through hole of the outer cylinder and the cylindrical holder, and screwed to the fixing nut. An apparatus for attaching a joint fitting to a mold, which is detachably attached to the mold via a cylindrical holder and an outer cylinder by means of a mounting bolt.

One or both of the inner surface of the mouth portion of the outer cylindrical body and the outer surface of the mouth portion of the cylindrical holder is provided with a close ring surface for concentrically inserting the cylindrical holder into the outer cylindrical body. The attachment apparatus to the formwork of the coupling metal fitting of Claim 1 to do.

3. The fitting metal form according to claim 1 or 2, wherein a seal ring is fitted in a liquid tight seal between the cylindrical holder and the outer cylindrical body at a root portion of the tapered outer surface of the cylindrical holder. Mounting device to .

A mounting device for a mold of a fitting that is provided on a joining end surface of a structure and joins the structures to each other,
A cylindrical joint fitting having a threaded hole inside is fitted to the central shaft portion of the fixed cylinder attached to the mold and the opening end surface is in contact with the contact surface of the fixed cylinder. A fixing bolt inserted into the through hole and screwed into the screw hole, and a mounting nut screwed to a male screw formed on the outer peripheral portion located on the opposite side of the opening end surface with respect to the mold of the fixed cylinder And a fitting device for attaching the fitting to the mold, which is detachably attached to the mold via a fixed cylinder.

Abutment surface mounting device to mold the joint fitting according to claim 4, characterized in that formed in the flange which is tapered to narrowed toward the center axis portion of the outer peripheral surface.

6. The apparatus for attaching a joint fitting to a mold according to claim 4 or 5, wherein a regulating member is fixed to the fixing bolt in the joint fitting in contact with the screw hole portion.