JP2004333409A

JP2004333409A - Tube connection inspection device

Info

Publication number: JP2004333409A
Application number: JP2003132614A
Authority: JP
Inventors: Hiroyuki Maekawa; 博之前川; Tetsuo Kakita; 哲男柿田
Original assignee: Taikisha Ltd
Current assignee: Taikisha Ltd
Priority date: 2003-05-12
Filing date: 2003-05-12
Publication date: 2004-11-25

Abstract

<P>PROBLEM TO BE SOLVED: To heighten inspection workability in a bonding state inspection of tubes. <P>SOLUTION: In this tube connection inspection device, ultrasonic thickness detection is performed to a tube connection part S in the state where an outside tube Pa is fitted to an inside tube Pb, in the state where a probe 3a of an ultrasonic thickness meter 3 is put on the outer surface thereof, and the bonding state by an adhesive x between the outside tube Pa and the inside tube Pb is inspected. The device is provided with a positioning means 2 for positioning the probe 3a in the properly putting state relative to the tube connection part S by engagement with the tube connection part S or a tubing part P linked to the tube connection part S, and the positioning means 2 is installed on the tip part of a stretching-out rod 1 for operation together with the probe 3a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は管接続検査装置に関し、詳しくは、外側管材と内側管材とを嵌め合い状態にした管接続部に対し、その外面に超音波厚み計の探触子を当て付ける状態で超音波厚み検出を実施して、外側管材と内側管材との接着剤による接合状態を検査する管接続検査装置に関する。
【０００２】
【従来の技術】
この種の管接続検査装置では、上記の如き超音波厚み検出による検出厚みの大小に基づき、管接続部における外側管材と内側管材との間に接着剤層が適切に存在するか否かを検知して、両管材の接合状態を判定する。
【０００３】
つまり（図５参照）、管接続部Ｓの外面（すなわち、外側管材Ｐａの外面）に探触子３ａを当て付けた状態で超音波厚み検出を実施すると、図５（イ）に示す如く、外側管材Ｐａと内側管材Ｐｂとの間に接着剤層ｘが適切に存在する場合には、内側管材Ｐｂの内面からの超音波反射により、外側管材Ｐａの厚みｔａと内側管材Ｐｂの厚みｔｂとを合わせた厚み（ｔａ＋ｔｂ）に相当する検出値が得られ、一方、図５（ロ）に示す如く、接着剤の付け忘れや塗布不良などにより外側管材Ｐａと内側管材Ｐｂとの間の接着剤層ｘが不存ないし不十分で両管材Ｐａ，Ｐｂの間に空隙が存在する場合には、その空隙に面する外側管材Ｐａの内面からの超音波反射により、外側管材Ｐａの厚みｔａのみに相当する検出値が得られ、この検出値の違いから、外側管材Ｐａと内側管材Ｐｂとの接合状態が、それら管材Ｐａ，Ｐｂの間に接着剤層ｘが適切に存在する適正な接合状態か否かを判定するが（特許文献１参照）、従来、この種の検査では、超音波厚み計の探触子３ａを単体状態で管接続部Ｓの外面に当て付けて検査を実施していた。
【０００４】
【特許文献１】
特開平５−１５７７４０号公報
【０００５】
【発明が解決しようとする課題】
しかし従来、検査対象の管接続部が高所や配管群の奥に位置する場合など、管接続部に対する探触子の当て付け操作が難しく、また、管接続部の外面に対する探触子の当て付け状態が不安定になって検査ミスも生じ易い問題があった。
【０００６】
この実情に鑑み、本発明の主たる課題は、合理的な改良により上記の如き問題を効果的に解消する点にある。
【０００７】
【課題を解決するための手段】
〔１〕請求項１に係る発明は、外側管材と内側管材とを嵌め合い状態にした管接続部に対し、その外面に超音波厚み計の探触子を当て付ける状態で超音波厚み検出を実施して、外側管材と内側管材との接着剤による接合状態を検査する管接続検査装置に係り、その特徴は、
管接続部又はその管接続部に連なる配管部への係合により管接続部に対して前記探触子を適正当て付け状態に位置決めする位置決め手段を設け、
この位置決め手段を前記探触子とともに作業用差伸べ棒の先端部に装備してある点にある。
【０００８】
つまり、この構成によれば、検査対象の管接続部が高所や配管群の奥に位置する場合にも、作業用差伸べ棒を用いることで、また、探触子とともに作業用差伸べ棒の先端部に装備した位置決め手段を管接続部（又はその管接続部に連なる配管部）へ係合させて位置決め機能させることにより、超音波厚み計の探触子を管接続部の外面に対し適正な当て付け状態に容易に当て付け操作し得るとともに、その適正当て付け状態を安定的に保つことができ、このことから、検査の作業性や正確さを効果的に高めることができる。
【０００９】
なお、請求項１に係る発明の実施においては、作業用差伸べ棒を伸縮構造や継足構造などの採用により長さ調整の自在なものにしておくことが望ましく、また、探触子からの検出信号を処理する超音波厚み計の本体は、作業用差伸べ棒を扱う作業者ないしその随伴者が携える携帯式にしておくのが望ましい。
【００１０】
請求項１に係る発明は、塩ビ管などの合成樹脂管における管接続部の検査に特に適しているが、検査対象の管接続部は、必ずしも合成樹脂管の管接続部に限られるものではなく、管接続部における外側管材と内側管材との間に接着剤層が適切に存在するか否かを超音波厚み検出により検知し得る管であれば、どのような材質の管の管接続部であってもよい。
【００１１】
〔２〕請求項２に係る発明は、請求項１に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記位置決め手段を、管接続部又はその管接続部に連なる配管部に対して引っ掛けるフック状具で構成し、
このフック状具に前記探触子を、フック状具の屈曲形状内側に向く状態にして付設してある点にある。
【００１２】
つまり、この構成では、位置決め手段として作業用差伸べ棒の先端部に装備したフック状具を検査対象の管接続部又はその管接続部に連なる配管部に対し、それら管接続部又は配管部がフック状具の屈曲形状内側に位置する状態に引っ掛けて係合させる。そして、上記の如く探触子をフック状具の屈曲形状内側に向く状態（換言すれば、フック状具を管接続部又は配管部に引っ掛けた状態において管中心側に向く状態）にしてフック状具に付設しておくことにより、上記引っ掛けに伴い、探触子が管接続部の外面に対し適正な当て付け状態に位置決めされるようにする。
【００１３】
すなわち、この構成によれば、作業用差伸べ棒の先端部に装備したフック状具を検査対象の管接続部又はその管接続部に連なる配管部に引っ掛けるというごく簡単な操作で、探触子を管接続部の外面に対し適正な当て付け状態に当て付けることができ、この点で、検査の作業性を一層効果的に高めることができる。
【００１４】
なお、請求項２に係る発明の実施において、フック状具の具体的な構造やフック状具に対する探触子の具体的な付設構造は、フック状具を検査対象の管接続部又はその管接続部に連なる配管部に引っ掛けるに伴い、そのフック状具に付設の探触子が管接続部の外面に対し適正な当て付け状態に位置決めされる構造であれば、後述の実施形態に示す構造に限らず種々の構造を採ることができる。
【００１５】
〔３〕請求項３に係る発明は、請求項１に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記位置決め手段を、管接続部又はその管接続部に連なる配管部に対して巻き掛ける帯状具で構成し、
この帯状具に前記探触子を、帯状具の巻き掛け内側に向く状態にして付設してある点にある。
【００１６】
つまり、この構成では、位置決め手段として作業用差伸べ棒の先端部に装備した帯状具を検査対象の管接続部又はその管接続部に連なる配管部に巻き掛けて係合させる。そして、上記の如く探触子を帯状具の巻き掛け内側に向く状態（換言すれば、帯状具を管接続部又は配管部に巻き掛けた状態において管中心側に向く状態）にして帯状具に付設しておくことにより、上記巻き掛けに伴い、探触子が管接続部の外面に対し適正な当て付け状態に位置決めされるようにする。
【００１７】
すなわち、この構成によれば、帯状具を検査対象の管接続部又はその管接続部に連なる配管部に巻き掛けて係合させるから、管接続部やそれに連なる配管部の径の違いに対応し易く、この点で、検査の作業性を一層効果的に高めることができる。
【００１８】
なお、請求項３に係る発明の実施において、帯状具の具体的な構造や帯状具に対する探触子の具体的な付設構造は、帯状具を検査対象の管接続部又はその管接続部に連なる配管部に巻き掛けるに伴い、その帯状具に付設の探触子が管接続部の外面に対し適正な当て付け状態に位置決めされる構造であれば、後述の実施形態に示す構造に限らず種々の構造を採ることができる。
【００１９】
〔４〕請求項４に係る発明は、請求項１〜３のいずれか１項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記位置決め手段を管接続部又はその管接続部に連なる配管部への係合状態に保持する保持手段を設け、
この保持手段を保持作用状態と保持解除状態とに切り換える操作具を、前記作業用差伸べ棒の基端部又は携帯式にした前記超音波厚み計の本体に設けてある点にある。
【００２０】
つまり、この構成によれば、保持手段を保持作用状態に切り換えて、位置決め手段を検査対象の管接続部又はその管接続部に連なる配管部への係合状態に保持することにより、探触子を位置決め手段による位置決め状態に固定化することができて、その固定化により探触子を管接続部の外面に対する適正な当て付け状態に一層確実かつ安定的に保つことができ、これにより、検査の作業性や正確さを一層効果的に高めることができる。
【００２１】
そしてまた、この保持手段の保持作用状態と保持解除状態との切り換えは、作業用差伸べ棒の基端部又は携帯式にした超音波厚み計の本体に設けた操作具により行うから、検査対象の管接続部が高所や配管群の奥にある場合にも、保持手段の切り換え操作を手元側で容易に行うことができ、この点からも、検査の作業性を高く確保することができる。
【００２２】
なお、請求項４に係る発明の実施において、保持手段の具体的な構造は、位置決め手段を管接続部又はその管接続部に連なる配管部への係合状態に保持でき、かつ、保持作用状態と保持解除状態との切り換えが可能な構造であれば、後述の実施形態に示す構造に限らず種々の構造を採ることができる。
【００２３】
また、操作具による保持作用状態と保持解除状態との切り換え操作は、機械式、有線式、無線式など、どのような操作方式を採用してもよい。
【００２４】
〔５〕請求項５に係る発明は、請求項１〜４のいずれか１項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記位置決め手段による位置決め状態下において、前記探触子を管接続部の管周方向に移動させる移動手段を設け、
この移動手段の操作具を、前記作業用差伸べ棒の基端部又は携帯式にした前記超音波厚み計の本体に設けてある点にある。
【００２５】
つまり、この構成によれば、管接続部の外面に当て付けた状態にある探触子を、位置決め手段による位置決め状態下で移動手段により管接続部の管周方向に移動させることにより、各移動箇所において探触子を管接続部の外面に対し適正な当て付け状態に保ちながら、管材接合状態の判定の為の超音波厚み検出を管周方向の複数箇所から行うことができ、これにより、管接続部における外側管材と内側管材との接着剤による接合状態の検査を一層綿密に行うことができて、検査精度を一層効果的に高めることができる。
【００２６】
そして、管周方向への探触子の移動を位置決め手段による位置決め状態のままで行い、また、移動手段の操作は作業用差伸べ棒の基端部又は携帯式にした超音波厚み計の本体に設けた操作具により行うから、検査対象の管接続部が高所や配管群の奥にある場合にも、探触子の管周方向への移動操作を容易に行うことができ、この点で、検査の作業性も高く確保することができる。
【００２７】
なお、請求項５に係る発明の実施において、移動手段の具体的な構造は、管接続部の外面に当て付けた状態にある探触子を、位置決め手段よる位置決め状態下で管接続部の管周方向に移動させ得る構造であれば、後述の実施形態に示す構造に限らず種々の構造を採ることができる。
【００２８】
また、操作具による移動手段の操作は、機械式、有線式、無線式など、どのような操作方式を採用してもよい。
【００２９】
〔６〕請求項６に係る発明は、請求項１〜５のいずれか１項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記位置決め手段による位置決め状態下において、前記探触子を管接続部への当て付け側へ弾性的に付勢する弾性付勢手段を設けてある点にある。
【００３０】
つまり、この構成によれば、位置決め手段により適正当て付け状態に位置決めして探触子を管接続部の外面に当て付けることにおいて、弾性付勢手段による当て付け側への弾性付勢により、探触子を管接続部の外面に対し一層確実かつ馴染み良く当て付けることができ、これにより、管接続部の外面に対し探触子を適正な当て付け状態で当て付ける機能を一層高めることができて、そのことで、検査の正確さを一層効果的に高めることができる。
【００３１】
なお、請求項６に係る発明の実施において、弾性付勢手段の具体的な構造は、探触子を位置決め手段による位置決め状態下で管接続部への当て付け側へ弾性的に付勢し得る構造であれば、後述の実施形態で示す構造に限らず種々の構造を採ることができる。
【００３２】
〔７〕請求項７に係る発明は、請求項１〜６のいずれか１項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
管接続部に対する前記探触子の当て付け面に、その全面にわたるシート状の軟質弾性材を付設してある点にある。
【００３３】
つまり、この構成によれば、位置決め手段により適正当て付け状態に位置決めして探触子を管接続部の外面に当て付けることにおいて、探触子の当て付け面に付設したシート状軟質弾性材の弾性変形により、探触子を管接続部の外面に対し一層馴染み良く当て付けることができ、これにより、請求項６に係る発明と同様、管接続部の外面に対し探触子を適正な当て付け状態で当て付ける機能を一層高めることができて、そのことで、検査の正確さを一層効果的に高めることができる。
【００３４】
なお、請求項７に係る発明の実施において、探触子の当て付け面に付設するシート状の軟質弾性材には、シリコンゴムなどを初め種々の材質のものを使用でき、また、その厚さや硬さも検査条件などに応じて適当な厚さや硬さを選定すればよい。
【００３５】
〔８〕請求項８に係る発明は、請求項１〜７のいずれか１項に係る発明の実施に好適な実施形態を特定するものであり、その特徴は、
前記超音波厚み計による検出厚みが設定値以上のとき、管材接合状態が適正であることを報知音の発生又は報知灯の点灯により自動的に報知する報知手段を設けてある点にある。
【００３６】
つまり、この構成によれば、上記設定値として管接続部における外側管材の厚みよりも大きく、かつ、外側管材の厚みと内側管材の厚みとを合わせた厚みより小さい適当値を設定しておけば、作業者は報知手段による報知音の発生又は報知灯の点灯により、検査対象の管接続部における管材接合状態が適正であることを即座に認知することができ、これにより、作業者が超音波厚み計の検出厚みを確認して、その確認した検出厚みに基づき検査対象の管接続部における管材接合状態が適正か否かを人為的に判断するといった方式に比べ、検査の作業性をさらに効果的に高めることができる。
【００３７】
なお、請求項８に係る発明の実施において、超音波厚み計による検出厚みが設定値未満のときや、超音波厚み検出そのものが不適切であった場合には、報知音の発生や報知灯の点灯を不実施とする、ないしは、超音波厚み計による検出厚みが設定値以上の場合とは異なる報知音を発生したり、超音波厚み計による検出厚みが設定値以上の場合とは異なる点灯状態で報知灯を点灯するようにする。
【００３８】
【発明の実施の形態】
（第１実施形態）
図１〜図５は管接続検査装置を示し、１は作業用差伸べ棒、２は作業用差伸べ棒１の先端部に装備した角鉤形状のフック状具、３ａはフック状具２に付設した超音波厚み計３の探触子であり、作業者は棒基端部を保持した状態で作業用差伸べ棒１を差伸べてフック状具２を塩ビ配管Ｐにおける検査対象の管接続部Ｓに引っ掛け、この引っ掛けにより探触子３ａを管接続部Ｓの外面に対し適正当て付け状態に位置決めして当て付ける。
【００３９】
そして、この当て付け状態において、作業者は携帯している超音波厚み計３の本体３ｂからの操作で超音波厚み検出を実施し、この超音波厚み検出により、図５に示す如く、管接続部Ｓにおいて嵌め合い状態にある外側管材Ｐａと内側管材Ｐｂとの接着剤ｘによる接合状態を検査する。
【００４０】
すなわち、この超音波厚み検出では、図５（イ）に示す如く、外側管材Ｐａと内側管材Ｐｂとの間に接着剤層ｘが適切に存在する場合には、内側管材Ｐｂの内面からの超音波反射により、外側管材Ｐａの厚みｔａと内側管材Ｐｂの厚みｔｂとを合わせた厚み（ｔａ＋ｔｂ）に相当する検出値が得られ、一方、図５（ロ）に示す如く、接着剤の付け忘れや塗布不良などにより外側管材Ｐａと内側管材Ｐｂとの間の接着剤層ｘが不存ないし不十分で両管材Ｐａ，Ｐｂの間に空隙が存在する場合には、その空隙に面する外側管材Ｐａの内面からの超音波反射により、外側管材Ｐａの厚みｔａのみに相当する検出値が得られ、この検出値の違いから、外側管材Ｐａと内側管材Ｐｂとの接合状態が、それら管材Ｐａ，Ｐｂの間に接着剤層ｘが適切に存在する適正な接合状態か否かを検査する。
【００４１】
角鉤形状のフック状具２は、作業用差伸べ棒１の先端に連結する連結辺部４と、その連結辺部４の先端に連結したＬ字状辺部５とからなり、このＬ字状辺部５における長辺部分５ａと短辺部分５ｂとのコーナー部内側に管接続部Ｓを位置させて、それら長辺部分５ａと短辺部分５ｂとの夫々を管接続部Ｓの外面に当接させる状態で、角鉤形状のフック状具２を検査対象の管接続部Ｓに引っ掛ける。
【００４２】
また、Ｌ字状辺部５は、間隔を空けて配置した２枚のＬ字状部材５Ａ，５Ｂで形成し、探触子３ａは、Ｌ字状辺部５における長辺部分５ａと短辺部分５ｂとのコーナー部でフック状具２の屈曲形状内側に向く状態して２枚のＬ字状部材５Ａ，５Ｂの間に取り付けてあり、これにより、角鉤形状のフック状具２を管接続部Ｓに引っ掛けることで、２枚のＬ字状部材５Ａ，５Ｂで形成したＬ字状辺部５における長辺部分５ａ及び短辺部分５ｂ夫々の管接続部Ｓに対する当接（換言すれば、２枚のＬ字状部材５Ａ，５Ｂで形成したＬ字状辺部５の管接続部Ｓに対する係合）をもって、管接続部Ｓの外面に対し探触子３ａをそれが管中心に向く適正な当て付け状態に位置決めする。
【００４３】
角鉤形状のフック状具２は、作業用差伸べ棒１に対して１本の蝶ボルト６で連結してあり、この蝶ボルト６を緩めてフック状具２を管接続部Ｓの管軸芯と平行な軸芯周りでの回動により姿勢変化させた状態で再び蝶ボルト６を締め込みフック状具２を固定することにより、作業状況に応じて作業用差伸べ棒１に対するフック状具２の相対姿勢を適宜変更できるようにしてある。
【００４４】
探触子３ａは、それに連結した２本の案内扞７を２枚のＬ字状部材５Ａ，５Ｂの夫々に形成した長穴８に係合させることにより、この長穴８の長さ範囲内で管接続部Ｓに対する遠近方向に移動自在にしてフック状具２に付設してあり、また、２枚のＬ字状部材５Ａ，５Ｂに取り付けた２本の固定扞９と各案内扞７との間にバネ１０を張架することで、上記の如く移動自在にした探触子３ａを図４の（イ），（ロ）に示す如くバネ１０により管接続部Ｓへの当て付け側へ弾性的に付勢するようにしてある。
【００４５】
そしてまた、管接続部Ｓの外面に対する探触子３ａの当て付け面には、その全面にわたるシート状の軟質弾性材１１を貼り付けてあり、これにより、管接続部Ｓに対するフック状具２の引っ掛けにより探触子３ａを管接続部Ｓの外面に当て付けることにおいて、探触子３ａをバネ１０による弾性付勢及びシート状軟質材１１の弾性変形により管接続部Ｓの外面に対し馴染み良く当て付けられるようにしてある。
【００４６】
超音波厚み計３の本体３ｂには、検出実行キーや厚み設定キーを初めとする各種操作キー１２、報知音発生器１３、並びに、デジタル表示器１４を装備してあり、超音波厚み計３の本体３ｂに内蔵の制御器１５は、検出実行キーが操作されると超音波厚み検出を実行して、その超音波厚み検出での検出厚みをｔをデジタル表示器１４に表示するとともに、その検出厚みｔが厚み設定キーにより設定された設定値ｔｓ以上のときには、報知音発生器１３を作動させて報知音を発生させる。
【００４７】
また、検出厚みｔが設定値ｔｓ未満のときは、報知音発生を不実施としてデジタル表示器１４による検出厚みｔの表示のみを実施し、そしてまた、超音波厚み検出そのものが不適切であったとき（すなわち、妥当な検出値が得られなかったとき）には、報知音発生を不実施としてデジタル表示器１４でエラーを表示するようにしてある。
【００４８】
つまり、設定値ｔｓとして検出対象の管接続部Ｓにおける外側管材Ｐａの厚みｔａよりも大きく、かつ、外側管材Ｐａの厚みｔａと内側管材Ｐｂの厚みｔｂとを合わせた厚み（ｔａ＋ｔｂ）より小さい適当値を設定しておけば、作業者は報知音発生により、検査対象の管接続部Ｓにおける管材接合状態が適正であることを即座に認知することができ、これにより、次の管接続部Ｓの検査へ能率良く移行できるようにしてある。
【００４９】
１６は超音波厚み計３の本体３ｂと探触子３ａとにわたる接続コードである。
【００５０】
以上要するに、本第１実施形態において、角鉤形状のフック状具２は、管接続部Ｓへの係合により管接続部Ｓに対して探触子３ａを適正当て付け状態に位置決めする位置決め手段を構成し、バネ１０は、この位置決め手段による位置決め状態下において探触子３ａを管接続部Ｓへの当て付け側へ弾性的に付勢する弾性付勢手段を構成し、そして、報知音発生器１３及び制御器１５は、超音波厚み計３による検出厚みｔが設定値ｔｓ以上のとき、管材接合状態が適正であることを報知音の発生により自動的に報知する報知手段を構成する。
【００５１】
〔第２実施形態〕
図６〜図８は第１実施形態で示した装置に改良を加えた管接続検査装置を示し、主な改良点は、作業用差伸べ棒１の先端部に装備するフック状具１７、及び、そのフック状具１７に対する探触子３ａの付設構造である。
【００５２】
つまり、この第２実施形態の装置では、弧状のフック状具１７を作業用差伸べ棒１の先端部に装備してあり、この弧状のフック状具１７を検査対象の管接続部Ｓに引っ掛けることで、そのフック状具１７に付設の探触子３ａを管接続部Ｓの外面に対し適正当て付け状態に位置決めして当て付け、この当て付け状態で超音波厚み検出を実施することにより、管接続部Ｓにおける外側管材Ｐａと内側管材Ｐｂとの接着剤ｘによる接合状態を検査する。
【００５３】
弧状のフック状具１７は、間隔を空けて配置した２枚の弧状部材１７Ａ，１７Ｂで形成し、探触子３ａはフック状具１７の屈曲形状内側に向く状態にして２枚の弧状部材１７Ａ，１７Ｂの間に取り付けてあり、これにより、弧状のフック状具１７を管接続部Ｓに引っ掛けることで、２枚の弧状部材１７Ａ，１７Ｂ夫々の管接続部Ｓに対する当接（換言すれば、２枚の弧状部材１７Ａ，１７Ｂ夫々の管接続部Ｓに対する係合）をもって、管接続部Ｓの外面に対し探触子３ａをそれが管中心に向く適正な当て付け状態に位置決めする。
【００５４】
また、弧状のフック状具１７には、そのフック状具１７を管接続部Ｓに引っ掛けた状態において弧状部材１７Ａ，１７Ｂとの間で管接続部Ｓを挟み込むことにより、フック状具１７を管接続部Ｓに対する引っ掛け状態に保持するレバー状保持具１８を設けてあり、このレバー状保持具１８は管接続部Ｓの管軸芯と平行な軸芯周りで回動自在にフック状具１７に取り付けて、その回動により、弧状部材１７Ａ，１７Ｂとの間で管接続部Ｓを挟み込む図８（イ）に示す如き保持作用状態と、如く管接続部Ｓからのフック状具１７の離脱を許す図８（ロ）に示す如き保持解除状態とに切り換える構造にしてある。
【００５５】
そして、レバー状保持具１８に連設したアーム部１８ａとフック状具１７との間に張架したスプリング１９により、レバー状保持具１９を保持作用状態の側に付勢するとともに、レバー状保持具１８に連結したワイヤー２０を管材からなる作業用差伸べ棒１に挿通して、作業用差伸べ棒１の基端部から外部に臨ませたワイヤー２０の端部に掴み部２０ａを設けてあり、これにより、作業者が掴み部２０ａを掴んでワイヤー２０をスプリング１９の付勢力に抗し引き操作することで、レバー状保持具１８を保持作用状態から保持解除状態に切り換え操作し、その保持解除状態において管接続部Ｓに対するフック状具１７の引っ掛け操作や、管接続部Ｓからのフック状具１７の離脱操作を行う。
【００５６】
また、フック状具１７を管接続部Ｓに引っ掛けた状態において、ワイヤー２０を緩めることで、スプリング１９の付勢力によりレバー状保持具１８を保持解除状態から保持作用状態に切り換えて、フック状具１７を管接続部Ｓに対する引っ掛け状態に保持する。
【００５７】
つまり、このようにレバー状保持具１８によりフック状具１７を管接続部Ｓに対する引っ掛け状態に保持することで、探触子３ａをフック状具１７による位置決め状態に固定化し、この固定化により、探触子３ａを管接続部Ｓの外面に対する適正な当て付け状態に一層安定的に保つようにしてある。
【００５８】
弧状のフック状具１７を形成する２枚の弧状部材１７Ａ，１７Ｂには夫々、弧状のスリット２１を形成し、探触子３ａは、移動台２２に取り付けた状態で、その移動台２２に設けた支持扞２３を２枚の弧状部材１７Ａ，１７Ｂ夫々の弧状スリット２１に係合させることでフック状具１７に付設してあり、これにより、フック状具１７を管接続部Ｓに引っ掛けた状態において、また、レバー状保持具１８によりフック状具１７を管接続部Ｓに対する引っ掛け状態に保持した状態において、弧状スリット２１により案内する形態で探触子３ａを移動台２２とともに管接続部Ｓの管周方向に移動し得るようにしてある。
【００５９】
そして、移動台２２とフック状具１７との間に張架したスプリング２４により、移動台２２を管接続部Ｓの管周方向における一方向きに付勢するとともに、レバー状保持具１８に対するワイヤー２０と同様、移動台２２に連設のアーム部２２ａに連結したワイヤー２５を作業用差伸べ棒１に挿通して、作業用差伸べ棒１の基端部から外部に臨ませたワイヤー２５の端部に掴み部２５ａを設けてあり、これにより、作業者が掴み部２５ａを掴んでワイヤー２５をスプリング２４の付勢力に抗し引き操作することで、探触子３ａを移動台２２とともに管接続部Ｓの管周方向における他方向きに移動させ、また、ワイヤー２０を緩めることでスプリング２４の付勢力により、探触子３ａを移動台２２とともに管接続部Ｓの管周方向における一方向き移動させるようにしてある。
【００６０】
つまり、この移動操作により、管接続部Ｓに対する管周方向の複数箇所からの超音波厚み検出を順次、容易に能率良く行えるようにしてある。
【００６１】
なお、作業用差伸べ棒１は、基端側の大径管材１ｂに対する先端側小径管材１ａの挿入深さを調整することで棒１の全体長さを調整する長さ調整自在な構造にしてある。
【００６２】
また、移動台２２に対する探触子３ａの取り付けについては、第１実施形態で示した装置と同様、探触子３ａを管接続部Ｓに対する遠近方向に移動自在な状態で移動台２２に取り付けて、バネ（図示省略）により探触子３ａを管接続部Ｓに対する当て付け側へ弾性的に付勢してあり、管接続部Ｓの外面に対する探触子３ａの当て付け面には、その全面にわたるシート状の軟質弾性材（図示省略）を付設してある。
【００６３】
そしてまた、超音波厚み計３の本体３ｂに内蔵の制御器１５は、第１実施形態で示した装置と同様、超音波厚み検出による検出厚みｔが厚み設定キーにより設定された設定値ｔｓ以上のときには、検出厚みをｔをデジタル表示器１４に表示するとともに、報知音発生器１３を作動させて報知音を発生させ、検出厚みｔが設定値ｔｓ未満のときは、報知音発生を不実施としてデジタル表示器１４による検出厚みｔの表示のみを実施し、超音波厚み検出そのものが不適切であったときには、報知音発生を不実施としてデジタル表示器１４でエラーを表示する構成にしてある。
【００６４】
以上要するに、本第２実施形態において、弧状のフック状具１７は、管接続部Ｓへの係合により管接続部Ｓに対して探触子３ａを適正当て付け状態に位置決めする位置決め手段を構成し、レバー状保持具１８は、この位置決め手段を管接続部Ｓへの係合状態に保持する保持手段を構成し、ワイヤー２０の掴み部２０ａは、作業用差伸べ棒１の基端部において保持手段を保持作用状態と保持解除状態とに切り換える操作具を構成する。
【００６５】
また、弧状スリット２１及び移動台２２は、位置決め手段による位置決め状態下において探触子３ａを管接続部Ｓの管周方向に移動させる移動手段を構成し、ワイヤー２５の掴み部２５ａは、作業用差伸べ棒１の基端部において移動手段を操作する操作具を構成する。
【００６６】
〔第３実施形態〕
図９，図１０は第１，第２実施形態で示した装置とは、管接続部Ｓに対する探触子３ａの当て付け方式を異ならせた管接続検査装置を示し、この第３実施形態の装置では、フック状具に代え、帯状具２６を作業用差伸べ棒１の先端部に装備してあり、この帯状具２６を検査対象の管接続部Ｓに巻き掛けることで、その帯状具２６に付設の探触子３ａを管接続部Ｓの外面に対し適正当て付け状態に位置決めして当て付け、この当て付け状態で超音波厚み検出を実施することにより、管接続部Ｓにおける外側管材Ｐａと内側管材Ｐｂとの接着材ｘによる接合状態を検査する。
【００６７】
帯状具２６はその基端側を作業用差伸べ棒１の先端部に連結し、探触子３ａは帯状具２６の巻き掛け内側に向く状態にして帯状具２６の基端側寄り箇所に付設してあり、これにより、帯状具２６を管接続部Ｓに巻き掛けることで、管接続部Ｓの外面に対し探触子３ａをそれが管中心に向く適正な当て付け状態に位置決めする。
【００６８】
また、帯状具２６の先端部（遊端部）には案内紐２７を連結し、作業用差伸べ棒１の先端部には、帯状具２６の中間部分を固定爪２８ａと可動爪２８ｂとにより挟み込んで把持する把持機構２８を装備してあり、これにより、図１０の（イ）〜（ハ）に示す如く、帯状具２６を管接続部Ｓに巻き掛けた状態での案内紐２７の手繰り操作により、帯状具２６の先端側を把持機構２８における固定爪２８ａと可動爪２８ｂとの間に挿通させた状態で手繰るようにして、帯状具２６を管接続部Ｓに対する締め付け状態にするとともに、その締め付け状態において固定爪２８ａと可動爪２８ｂとにより帯状具２６を把持することで、帯状具２６を管接続部Ｓに対する巻き掛け状態に保持するようにしてある。
【００６９】
把持機構２８の操作については、可動爪２８ｂを押し引き操作する細棒材２９を管材からなる作業用差伸べ棒１に挿通して、作業用差伸べ棒１の基端部から外部に臨ませた細棒材２９の端部に掴み部２９ａを設けてあり、これにより、作業者が掴み部３０ａを掴んで細棒材２９を引き操作することで、可動爪２８ｂを把持作用状態から把持解除状態（すなわち保持解除状態）に切り換え操作し、その把持解除状態において固定爪２８ａと可動爪２８ｂとの間への帯状具２６の挿通操作や、固定爪２８ａと可動爪２８ｂとの間からの帯状具２６の抜き取り操作を行う。
【００７０】
また、案内紐２７の手繰り操作により帯状具２６を管接続部Ｓに対し締め付けた状態において、細棒材２９を押し操作することで、可動爪２８ｂを把持解除状態から把持作用状態に切り換えて、帯状具２６を管接続部Ｓに対する巻き掛け状態に保持する。
【００７１】
なお、管接続部Ｓの外面に対する探触子３ａの当て付け面には、その全面にわたるシート状の軟質弾性材（図示省略）を付設してあり、また、超音波厚み計３の本体３ｂに内蔵の制御器は、第１，第２実施形態で示した装置と同様、超音波厚み検出による検出厚みｔが厚み設定キーにより設定された設定値ｔｓ以上のときには、検出厚みをｔをデジタル表示器に表示するとともに、報知音発生器を作動させて報知音を発生させ、検出厚みｔが設定値ｔｓ未満のときは、報知音発生を不実施としてデジタル表示器による検出厚みｔの表示のみを実施し、超音波厚み検出そのものが不適切であったときには、報知音発生を不実施としてデジタル表示器でエラーを表示する構成にしてある。
【００７２】
以上要するに、本第３実施形態において、帯状具２６は、管接続部Ｓへの係合により管接続部Ｓに対して探触子３ａを適正当て付け状態に位置決めする位置決め手段を構成し、把持機構２８は、この位置決め手段を管接続部Ｓへの係合状態に保持する保持手段を構成し、細棒材２９の掴み部２９ａは、作業用差伸べ棒１の基端部において保持手段を保持作用状態と保持解除状態とに切り換える操作具を構成する。
【００７３】
〔別実施形態〕
前述の実施形態では、位置決め手段を管接続部Ｓに対する係合状態に保持する保持手段の保持作用状態と保持解除状態とへの切り換え操作や、探触子３ａを管接続部Ｓの管周方向に移動させる移動操作を人為力で行う例を示したが、これら切り換え操作や移動操作をモーターや電磁ソレノイドなどのアクチュエータにより行うようにしてもよい。
【００７４】
また、その場合、アクチュエータに対する有線式や無線式の操作具を、作業用差伸べ棒１の基端部や、携帯式にした超音波厚み計３の本体３ｂに装備するようにしてもよい。
【００７５】
前述の実施形態では、超音波厚み検出による検出厚みｔが設定値ｔｓ以上のとき自動的に報知音を発生させる構成にしたが、検出厚みｔが設定値ｔｓ以上のとき自動的に報知灯を点灯させる構成にしてもよい。
【００７６】
また、前述の実施形態では、超音波厚み検出による検出厚みｔが設定値ｔｓ未満のときや、超音波厚み検出そのものが不適切であったとき、報知音の発生を不実施としたが、これに代え、検出厚みｔが設定値ｔｓ未満のときや、超音波厚み検出そのものが不適切であったとき、検出厚みｔが設定値ｔｓ以上の場合とは異なる報知音を発生したり、検出厚みｔが設定値ｔｓ以上の場合とは異なる点灯状態で報知灯を点灯する構成にしてもよい。
【００７７】
前述の実施形態では、位置決め手段を管接続部Ｓへ係合させることで管接続部Ｓの外面に対し探触子３ａを適正当て付け状態に位置決めする例を示したが、これに代え、位置決め手段を管接続部Ｓに連なる配管部Ｐへ係合させることで管接続部Ｓの外面に対し探触子３ａを適正当て付け状態に位置決めする構成にしてもよい。
【図面の簡単な説明】
【図１】第１実施形態を示す検査作業の状態図
【図２】第１実施形態を示す装置の全体正面図
【図３】第１実施形態を示す装置要部の平面視断面図
【図４】第１実施形態を示す装置要部の概略正面図
【図５】検査原理の説明図
【図６】第２実施形態を示す装置の全体正面図
【図７】第２実施形態を示す装置要部の斜視図
【図８】第２実施形態を示す装置要部の概略正面図
【図９】第３実施形態を示す装置の全体斜視図
【図１０】第３実施形態を示す検査作業の状態図
【符号の説明】
１作業用差伸べ棒
２位置決め手段，フック状具
３超音波厚み計
３ａ探触子
３ｂ超音波厚み計の本体
１０弾性付勢手段
１１シート状軟質弾性材
１３，１５報知手段
１７位置決め手段，フック状具
１８保持手段
２０ａ操作具
２１，２２移動手段
２５ａ操作具
２６位置決め手段，帯状具
２８保持手段
２９ａ操作具
Ｐ配管部
Ｐａ外側管材
Ｐｂ内側管材
ｔ検出厚み
ｔｓ設定値
Ｓ管接続部
ｘ接着剤[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pipe connection inspection apparatus, and more particularly, to ultrasonic thickness detection in a state where a probe of an ultrasonic thickness gauge is applied to an outer surface of a pipe connection portion in which an outer pipe material and an inner pipe material are fitted. And a pipe connection inspection device for inspecting a joint state of the outer pipe material and the inner pipe material with an adhesive.
[0002]
[Prior art]
This type of pipe connection inspection apparatus detects whether or not an adhesive layer is properly present between the outer pipe material and the inner pipe material at the pipe connection part based on the magnitude of the thickness detected by the ultrasonic thickness detection as described above. Then, the joining state of both pipe members is determined.
[0003]
That is, when the ultrasonic thickness detection is performed in a state where the probe 3a is applied to the outer surface of the pipe connection portion S (that is, the outer surface of the outer tube material Pa), as shown in FIG. When the adhesive layer x is properly present between the outer tube Pa and the inner tube Pb, the thickness ta of the outer tube Pa and the thickness tb of the inner tube Pb are determined by ultrasonic reflection from the inner surface of the inner tube Pb. 5B, a detection value corresponding to the thickness (ta + tb) is obtained. On the other hand, as shown in FIG. When the layer x is absent or insufficient and a gap exists between the two pipes Pa and Pb, only the thickness ta of the outer pipe Pa is reflected by ultrasonic reflection from the inner surface of the outer pipe Pa facing the gap. The corresponding detection value is obtained, and from the difference of this detection value It is determined whether the joining state between the outer tube Pa and the inner tube Pb is a proper joining state in which the adhesive layer x is properly present between the tubes Pa and Pb (see Patent Document 1). In this type of inspection, the probe 3a of the ultrasonic thickness gauge is applied alone to the outer surface of the pipe connection S to perform the inspection.
[0004]
[Patent Document 1]
JP-A-5-157740
[0005]
[Problems to be solved by the invention]
Conventionally, however, it has been difficult to apply the probe to the pipe connection when the pipe connection to be inspected is located at a high place or deep inside the piping group, and the probe has been applied to the outer surface of the pipe connection. There has been a problem that the attachment state becomes unstable and an inspection error easily occurs.
[0006]
In view of this situation, a main problem of the present invention is to solve the above problems effectively by rational improvement.
[0007]
[Means for Solving the Problems]
[1] The invention according to claim 1 performs ultrasonic thickness detection in a state in which a probe of an ultrasonic thickness gauge is applied to an outer surface of a pipe connection portion in which an outer pipe material and an inner pipe material are fitted to each other. The present invention relates to a pipe connection inspection apparatus for inspecting a joint state of an outer pipe material and an inner pipe material with an adhesive, and its characteristics are as follows.
Positioning means for positioning the probe in an appropriate contact state with respect to the pipe connection portion by engagement with a pipe connection portion or a pipe portion connected to the pipe connection portion,
This positioning means is provided together with the probe at the tip of the work difference bar.
[0008]
In other words, according to this configuration, even when the pipe connection part to be inspected is located at a high place or in the back of the piping group, the work difference rod is used, and the work difference rod together with the probe is used. The probe of the ultrasonic thickness gauge is positioned on the outer surface of the pipe connection by engaging the positioning means provided at the tip of the tube with the pipe connection (or the pipe connected to the pipe connection) to perform the positioning function. It is possible to easily perform the applying operation to the appropriate applying state, and it is possible to stably maintain the appropriate applying state, so that the workability and accuracy of the inspection can be effectively improved.
[0009]
In the implementation of the invention according to claim 1, it is desirable that the working difference rod is adjustable in length by adopting a telescopic structure, a foot structure, or the like. The main body of the ultrasonic thickness gauge for processing the detection signal is desirably portable so that an operator or an accompanying person who handles the work difference bar can carry the same.
[0010]
The invention according to claim 1 is particularly suitable for inspection of a pipe connection part in a synthetic resin pipe such as a PVC pipe, but the pipe connection part to be inspected is not necessarily limited to the pipe connection part of the synthetic resin pipe. If the pipe can detect by an ultrasonic thickness detection whether or not the adhesive layer is properly present between the outer pipe material and the inner pipe material at the pipe connection portion, the pipe connection portion of any material can be used. There may be.
[0011]
[2] The invention according to claim 2 specifies an embodiment suitable for carrying out the invention according to claim 1, and its features are as follows.
The positioning means is constituted by a hook-shaped tool which is hooked on a pipe connection or a pipe connected to the pipe connection,
The point is that the probe is attached to the hook-shaped member so as to face the inside of the bent shape of the hook-shaped member.
[0012]
In other words, in this configuration, the hook-shaped tool provided at the distal end of the working difference rod as a positioning means is connected to the pipe connection part to be inspected or the pipe part connected to the pipe connection part. The hook is hooked and engaged in a state located inside the bent shape of the hook. Then, as described above, the probe is turned toward the inside of the bent shape of the hook-shaped device (in other words, the hook-shaped device is directed toward the center of the pipe when the hook-shaped tool is hooked on the pipe connecting portion or the pipe portion), and the hook shape is formed. By attaching the probe to the tool, the probe is positioned in an appropriate contact state with respect to the outer surface of the pipe connection portion with the hooking.
[0013]
In other words, according to this configuration, the probe is provided with a very simple operation of hooking the hook-shaped tool provided at the tip of the working expansion rod to the pipe connection to be inspected or the pipe connected to the pipe connection. Can be applied to the outer surface of the pipe connection portion in an appropriate application state, and in this respect, the workability of the inspection can be more effectively improved.
[0014]
In the embodiment of the invention according to claim 2, the specific structure of the hook-shaped device and the specific attachment structure of the probe to the hook-shaped device are as follows. If the probe attached to the hook-shaped device is positioned in an appropriate contact state with respect to the outer surface of the pipe connection portion as it is hooked on the pipe portion connected to the portion, the structure shown in the embodiment described later Various structures can be adopted without limitation.
[0015]
[3] The invention according to claim 3 specifies an embodiment suitable for carrying out the invention according to claim 1, and its features are as follows.
The positioning means is constituted by a band-shaped member wound around a pipe connection or a pipe connected to the pipe connection,
The present invention is characterized in that the probe is attached to the band-shaped device so as to face the inside of the band-shaped device.
[0016]
That is, in this configuration, the band-shaped tool provided at the distal end of the working difference rod as the positioning means is wound around and engaged with the pipe connection to be inspected or the pipe connected to the pipe connection. Then, as described above, the probe is turned toward the inside of the wrapping of the band (in other words, the state where the band is turned toward the center of the pipe when the band is wrapped around the pipe connection portion or the pipe), and the band is turned into the band. By providing the probe, the probe is positioned in an appropriate contact state with respect to the outer surface of the pipe connection portion in association with the above-mentioned winding.
[0017]
In other words, according to this configuration, the band-shaped device is wound around and engaged with the pipe connection to be inspected or the pipe connected to the pipe connection, so that it is possible to cope with the difference in the diameter of the pipe connection and the pipe connected thereto. In this respect, the workability of the inspection can be more effectively improved in this respect.
[0018]
In the implementation of the invention according to claim 3, the specific structure of the strip and the specific attachment structure of the probe to the strip are such that the strip is connected to the pipe connection portion to be inspected or the pipe connection portion. As long as the probe attached to the band-shaped member is positioned in an appropriate contact state with respect to the outer surface of the pipe connection portion as it is wound around the pipe portion, the structure is not limited to the structure described in the embodiment described later, and may be various. Structure can be adopted.
[0019]
[4] The invention according to claim 4 specifies an embodiment suitable for carrying out the invention according to any one of claims 1 to 3, and its features are as follows.
Providing holding means for holding the positioning means in an engaged state with a pipe connection or a pipe connected to the pipe connection,
The operating tool for switching the holding means between the holding action state and the holding release state is provided on the base end of the working extension rod or on the main body of the portable ultrasonic thickness gauge.
[0020]
That is, according to this configuration, by switching the holding means to the holding action state and holding the positioning means in the engagement state with the pipe connection to be inspected or the pipe connected to the pipe connection, the probe is provided. Can be fixed to the positioning state by the positioning means, and the fixing can more reliably and stably maintain the probe in a state where the probe is properly applied to the outer surface of the pipe connection portion. Work efficiency and accuracy can be more effectively improved.
[0021]
Further, the switching between the holding action state and the holding release state of the holding means is performed by the operating tool provided on the base end of the work difference bar or the main body of the portable ultrasonic thickness gauge, and therefore, the inspection object The switching operation of the holding means can be easily performed at hand even when the pipe connection portion is located at a high place or behind a group of pipes, and from this point, the workability of the inspection can be ensured high. .
[0022]
In the embodiment of the invention according to claim 4, the specific structure of the holding means is such that the positioning means can be held in a state of engagement with the pipe connection or the pipe connected to the pipe connection, and the holding action state The structure is not limited to the structure described in the embodiment described below, and various structures can be adopted as long as the structure can be switched between the holding state and the holding release state.
[0023]
The switching operation between the holding action state and the holding release state by the operation tool may employ any operation method such as a mechanical type, a wired type, and a wireless type.
[0024]
[5] The invention according to claim 5 specifies an embodiment suitable for carrying out the invention according to any one of claims 1 to 4, and its features are as follows.
Under a positioning state by the positioning means, a moving means for moving the probe in a pipe circumferential direction of the pipe connection part is provided,
The operating tool of the moving means is provided on the base end of the work spreader or on the main body of the portable ultrasonic thickness gauge.
[0025]
In other words, according to this configuration, each probe is moved in the pipe circumferential direction of the pipe connection part by the moving means under the positioning state of the positioning means, so that each probe is brought into contact with the outer surface of the pipe connection part. Ultrasonic thickness detection for judging the pipe material joining state can be performed from a plurality of locations in the circumferential direction of the pipe while maintaining the probe in an appropriate state with respect to the outer surface of the pipe connection portion at the location. Inspection of the bonding state between the outer pipe material and the inner pipe material at the pipe connection portion by the adhesive can be performed more minutely, and the inspection accuracy can be more effectively improved.
[0026]
Then, the probe is moved in the circumferential direction of the tube while being positioned by the positioning means, and the operation of the moving means is performed at the base end of the work difference bar or the main body of the portable ultrasonic thickness gauge. Since the operation is performed using the operating tool provided in the pipe, the probe can be easily moved in the circumferential direction of the pipe even when the pipe connection part to be inspected is at a high place or in the back of the pipe group. Thus, the workability of the inspection can be ensured high.
[0027]
In the embodiment of the invention according to claim 5, the specific structure of the moving means is such that the probe, which is in contact with the outer surface of the pipe connecting part, is connected to the pipe of the pipe connecting part under the positioning state by the positioning means. As long as the structure can be moved in the circumferential direction, various structures can be adopted without being limited to the structure described in the embodiment described later.
[0028]
The operation of the moving means by the operating tool may employ any operation method such as a mechanical method, a wired method, and a wireless method.
[0029]
[6] The invention according to claim 6 specifies an embodiment suitable for carrying out the invention according to any one of claims 1 to 5, and its features are as follows.
An elastic urging means is provided for elastically urging the probe toward the abutting side of the probe with respect to the pipe connection portion under the positioning state by the positioning means.
[0030]
In other words, according to this configuration, when the probe is positioned in the proper contact state by the positioning means and the probe is applied to the outer surface of the pipe connection portion, the probe is resiliently biased to the contact side by the elastic biasing means. The probe can be more reliably and familiarly applied to the outer surface of the pipe connection portion, thereby further improving the function of applying the probe to the outer surface of the pipe connection portion in an appropriate state. Thus, the accuracy of the inspection can be more effectively improved.
[0031]
In the embodiment of the invention according to claim 6, the specific structure of the elastic urging means can elastically urge the probe toward the abutting side on the pipe connecting portion under the positioning state by the positioning means. The structure is not limited to the structure described in the embodiment described later, and various structures can be adopted.
[0032]
[7] The invention according to claim 7 specifies an embodiment suitable for carrying out the invention according to any one of claims 1 to 6, and its features are as follows.
The present invention is characterized in that a soft elastic material in the form of a sheet is provided on the entire surface of the contact surface of the probe with respect to the pipe connection portion.
[0033]
In other words, according to this configuration, in positioning the probe in an appropriate contact state by the positioning means and contacting the probe to the outer surface of the pipe connection portion, the sheet-like soft elastic material attached to the contact surface of the probe is used. Due to the elastic deformation, the probe can be more easily applied to the outer surface of the pipe connection portion. Thus, the probe can be appropriately applied to the outer surface of the pipe connection portion, similarly to the invention according to claim 6. The function of applying in the attached state can be further enhanced, and thereby the accuracy of the inspection can be more effectively enhanced.
[0034]
In the implementation of the invention according to claim 7, as the sheet-like soft elastic material attached to the contact surface of the probe, various materials such as silicon rubber can be used. For the hardness, an appropriate thickness and hardness may be selected according to the inspection conditions.
[0035]
[8] The invention according to claim 8 specifies an embodiment suitable for carrying out the invention according to any one of claims 1 to 7, and its features are as follows.
When the thickness detected by the ultrasonic thickness gauge is equal to or greater than a set value, a notifying means is provided for automatically notifying that the pipe material bonding state is appropriate by generating a notification sound or by turning on a notification lamp.
[0036]
In other words, according to this configuration, if the set value is set to an appropriate value that is larger than the thickness of the outer pipe material at the pipe connection portion and smaller than the total thickness of the outer pipe material and the inner pipe material. The operator can immediately recognize that the pipe connection at the pipe connection to be inspected is proper by the generation of the notification sound by the notification means or the turning on of the notification lamp. Compared to the method of checking the thickness detected by the thickness gauge and artificially judging whether the pipe joint at the pipe connection to be inspected is appropriate based on the detected thickness, the workability of inspection is more effective. Can be increased.
[0037]
In the implementation of the invention according to claim 8, when the thickness detected by the ultrasonic thickness meter is less than the set value, or when the ultrasonic thickness detection itself is inappropriate, generation of an alarm sound and an alarm lamp are performed. Lighting is not performed, or a notification sound different from the case where the thickness detected by the ultrasonic thickness gauge is equal to or more than the set value is generated, or a lighting state different from the case where the thickness detected by the ultrasonic thickness meter is equal to or more than the set value. To turn on the notification light.
[0038]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
1 to 5 show a pipe connection inspection device, 1 is a work extension rod, 2 is a square hook-shaped tool provided at the tip of the work extension rod 1, and 3a is a hook-shaped tool 2. The probe of the ultrasonic thickness gauge 3 attached thereto, the operator extends the work extension rod 1 while holding the rod base end, and connects the hook-shaped tool 2 to the pipe to be inspected in the PVC pipe P. The probe 3a is hooked on the portion S, and the probe 3a is positioned and applied to the outer surface of the pipe connection portion S in an appropriate application state.
[0039]
Then, in this applied state, the operator performs ultrasonic thickness detection by operating the main body 3b of the ultrasonic thickness meter 3 carried, and the pipe thickness is connected by the ultrasonic thickness detection as shown in FIG. In the portion S, the joined state of the fitted outer tube Pa and the inner tube Pb by the adhesive x is inspected.
[0040]
That is, in this ultrasonic thickness detection, as shown in FIG. 5A, when the adhesive layer x is properly present between the outer tube Pa and the inner tube Pb, the supersonic wave from the inner surface of the inner tube Pb is detected. By the sound wave reflection, a detection value corresponding to a thickness (ta + tb) obtained by adding the thickness ta of the outer pipe Pa and the thickness tb of the inner pipe Pb is obtained. On the other hand, as shown in FIG. If the adhesive layer x between the outer tube Pa and the inner tube Pb is absent or insufficient due to the coating or poor application and there is a gap between the two tubes Pa and Pb, the outer tube facing the gap By ultrasonic reflection from the inner surface of Pa, a detection value corresponding to only the thickness ta of the outer tube Pa is obtained. From the difference in the detected values, the joining state between the outer tube Pa and the inner tube Pb is determined by the tube materials Pa, Adhesive layer x properly exists between Pb Checking whether proper bonding state that.
[0041]
The hook-shaped tool 2 in the shape of a square hook comprises a connection side 4 connected to the tip of the working extension bar 1 and an L-shaped side 5 connected to the tip of the connection side 4. The pipe connection portion S is located inside the corner between the long side portion 5a and the short side portion 5b in the shape side portion 5, and each of the long side portion 5a and the short side portion 5b is placed on the outer surface of the pipe connection portion S. In the contact state, the hook 2 having a square hook shape is hooked on the pipe connection portion S to be inspected.
[0042]
The L-shaped side portion 5 is formed by two L-shaped members 5A and 5B arranged at an interval, and the probe 3a includes a long side portion 5a and a short side in the L-shaped side portion 5. It is attached between the two L-shaped members 5A and 5B so as to face the inside of the bent shape of the hook-shaped tool 2 at the corner with the portion 5b, whereby the square hook-shaped hook-shaped tool 2 is connected to the tube. By hooking on the connecting portion S, the long side portion 5a and the short side portion 5b of the L-shaped side portion 5 formed by the two L-shaped members 5A and 5B abut on the pipe connecting portion S (in other words, (Engagement of the L-shaped side portion 5 formed by the two L-shaped members 5A and 5B with the pipe connection portion S) so that the probe 3a faces the outer surface of the pipe connection portion S toward the center of the pipe. Position it in the proper contact state.
[0043]
The hook-shaped tool 2 in the shape of a square hook is connected to the working extension bar 1 with one wing bolt 6, and the wing bolt 6 is loosened to connect the hook-shaped tool 2 to the pipe shaft of the pipe connection portion S. In a state where the posture has been changed by rotation about an axis parallel to the core, the wing bolt 6 is tightened again to fix the hook-shaped member 2, so that the hook-shaped member with respect to the work difference bar 1 according to the work situation. 2 can be changed as appropriate.
[0044]
The probe 3a is provided within the length range of the long hole 8 by engaging the two guide rods 7 connected thereto with the long holes 8 formed in the two L-shaped members 5A and 5B, respectively. And is attached to the hook-shaped member 2 so as to be movable in the near and far directions with respect to the pipe connection portion S, and two fixed rods 9 and guide rods 7 attached to the two L-shaped members 5A and 5B. The probe 3a made movable as described above by stretching the spring 10 between them is applied to the pipe connecting portion S by the spring 10 as shown in FIGS. It is designed to be elastically biased.
[0045]
Further, a sheet-like soft elastic material 11 is attached to the entire surface of the probe 3a to be applied to the outer surface of the pipe connection portion S, whereby the hook-shaped tool 2 with respect to the pipe connection portion S is attached. When the probe 3a is brought into contact with the outer surface of the pipe connection portion S by hooking, the probe 3a is easily fitted to the outer surface of the pipe connection portion S by elastic biasing by the spring 10 and elastic deformation of the sheet-like soft material 11. It is designed to be applied.
[0046]
The main body 3b of the ultrasonic thickness gauge 3 is equipped with various operation keys 12, such as a detection execution key and a thickness setting key, a notification sound generator 13, and a digital display 14. When the detection execution key is operated, the controller 15 incorporated in the main body 3b executes ultrasonic thickness detection, displays the detected thickness in the ultrasonic thickness detection on the digital display 14, and displays When the detected thickness t is equal to or greater than the set value ts set by the thickness setting key, the notification sound generator 13 is operated to generate a notification sound.
[0047]
When the detected thickness t is less than the set value ts, the notification sound is not generated and only the display of the detected thickness t is performed by the digital display 14, and the ultrasonic thickness detection itself is inappropriate. At this time (that is, when a proper detection value is not obtained), the generation of the notification sound is not performed, and an error is displayed on the digital display 14.
[0048]
In other words, the set value ts is appropriately larger than the thickness ta of the outer tube Pa at the pipe connection portion S to be detected, and smaller than the thickness (ta + tb) obtained by adding the thickness ta of the outer tube Pa and the thickness tb of the inner tube Pb. If the value is set, the worker can immediately recognize that the pipe connection state at the pipe connection portion S to be inspected is appropriate by the generation of the notification sound, and thereby the next pipe connection portion S The test can be efficiently transferred to
[0049]
Reference numeral 16 denotes a connection cord extending between the main body 3b of the ultrasonic thickness gauge 3 and the probe 3a.
[0050]
In short, in the first embodiment, the hook-shaped tool 2 having a square hook shape is a positioning means for positioning the probe 3a in an appropriate contact state with respect to the pipe connection S by engagement with the pipe connection S. The spring 10 constitutes an elastic urging means for elastically urging the probe 3a toward the abutting side of the probe 3a to the pipe connecting portion S under the positioning state by the positioning means, and generates a notification sound. When the thickness t detected by the ultrasonic thickness gauge 3 is equal to or greater than the set value ts, the device 13 and the controller 15 constitute a notifying means for automatically notifying that the pipe joint state is proper by generating a notifying sound.
[0051]
[Second embodiment]
FIGS. 6 to 8 show a pipe connection inspection apparatus obtained by improving the apparatus shown in the first embodiment, and the main points of improvement are a hook-like tool 17 provided at the tip of the work insertion rod 1, and This is the structure in which the probe 3a is attached to the hook-shaped member 17.
[0052]
In other words, in the apparatus of the second embodiment, the arc-shaped hook 17 is provided at the tip of the work extending bar 1, and the arc-shaped hook 17 is hooked on the pipe connection S to be inspected. Thus, the probe 3a attached to the hook-shaped member 17 is positioned and applied to the outer surface of the pipe connection portion S in an appropriate abutting state, and the ultrasonic thickness detection is performed in this abutting state. The joining state of the outer tube material Pa and the inner tube material Pb at the tube connecting portion S by the adhesive x is inspected.
[0053]
The arc-shaped hook 17 is formed by two arc-shaped members 17A and 17B spaced from each other, and the probe 3a is directed to the inside of the bent shape of the hook 17 so that the two arc-shaped members 17A are formed. , 17B, so that the arc-shaped hook 17 is hooked on the pipe connecting portion S, so that the two arc-shaped members 17A, 17B abut against the pipe connecting portion S (in other words, The engagement of the two arc-shaped members 17A and 17B with the tube connection S) positions the probe 3a with respect to the outer surface of the tube connection S in an appropriate contact state in which the probe 3a faces the center of the tube.
[0054]
The hook 17 is connected to the arc-shaped members 17A and 17B in a state where the hook 17 is hooked on the pipe connection S, so that the hook 17 is connected to the pipe. A lever-shaped holder 18 is provided to hold the hook 17 in a hooked state with respect to the connection portion S. The lever-shaped holder 18 is rotatably attached to the hook-shaped member 17 around an axis parallel to the tube axis of the tube connection portion S. By attaching and turning, the pipe connecting portion S is sandwiched between the arc-shaped members 17A and 17B to hold the pipe connecting portion S as shown in FIG. The structure is switched to a holding release state as shown in FIG.
[0055]
A spring 19 stretched between an arm portion 18a connected to the lever-shaped holder 18 and the hook-shaped member 17 urges the lever-shaped holder 19 to the side of the holding action state, and simultaneously holds the lever-shaped holder. The wire 20 connected to the tool 18 is inserted into the working extension rod 1 made of a tubular material, and a grip portion 20a is provided at the end of the wire 20 facing the outside from the base end of the operation extension rod 1. With this, the operator grips the grip portion 20a and pulls the wire 20 against the urging force of the spring 19, thereby switching the lever-shaped holding member 18 from the holding operation state to the holding release state, and In the holding release state, an operation of hooking the hook-shaped member 17 on the tube connection portion S and an operation of detaching the hook-shaped member 17 from the tube connection portion S are performed.
[0056]
When the hook 20 is hooked on the pipe connecting portion S, the wire 20 is loosened, and the urging force of the spring 19 switches the lever-like holding member 18 from the holding release state to the holding operation state. 17 is held in a hooked state with respect to the pipe connection S.
[0057]
That is, by holding the hook 17 in the hooked state with respect to the pipe connecting portion S by the lever-shaped holder 18 in this manner, the probe 3a is fixed to the positioning state by the hook 17 and by this fixing, The probe 3a is more stably maintained in an appropriate contact state with respect to the outer surface of the pipe connection portion S.
[0058]
An arc-shaped slit 21 is formed in each of the two arc-shaped members 17A and 17B forming the arc-shaped hook-shaped tool 17, and the probe 3a is provided on the moving table 22 while being attached to the moving table 22. The supporting rod 23 is attached to the hook-shaped member 17 by engaging the arc-shaped slits 21 of the two arc-shaped members 17A and 17B, whereby the hook-shaped member 17 is hooked on the pipe connecting portion S. In a state where the hook-shaped member 17 is held by the lever-shaped holding member 18 in a hooked state with respect to the tube connecting portion S, the probe 3a is guided together with the movable base 22 by the arc-shaped slit 21 in the tube connecting portion S. It can move in the pipe circumferential direction.
[0059]
A spring 24 stretched between the movable table 22 and the hook-shaped tool 17 urges the movable table 22 in one direction in the pipe circumferential direction of the pipe connection portion S, and also applies a wire 20 to the lever-shaped holder 18. In the same manner as described above, the wire 25 connected to the arm 22a connected to the movable base 22 is inserted through the work extension rod 1, and the end of the wire 25 facing the outside from the base end of the work extension rod 1. The gripping portion 25a is provided on the portion, whereby the operator grips the gripping portion 25a and pulls the wire 25 against the urging force of the spring 24, thereby connecting the probe 3a with the movable base 22 by pipe connection. By moving the portion S in the other direction in the circumferential direction of the tube, and by loosening the wire 20, the probe 3a is moved in one direction in the circumferential direction of the tube connection portion S together with the moving table 22 by the urging force of the spring 24. It is so as to be dynamic.
[0060]
That is, by this moving operation, the ultrasonic thickness detection from a plurality of locations in the pipe circumferential direction with respect to the pipe connection portion S can be sequentially and easily and efficiently performed.
[0061]
The working difference rod 1 has a length-adjustable structure that adjusts the entire length of the rod 1 by adjusting the insertion depth of the small-diameter tube 1a on the distal end into the large-diameter tube 1b on the proximal end. is there.
[0062]
In addition, as for the attachment of the probe 3a to the moving table 22, the probe 3a is attached to the moving table 22 in a state in which the probe 3a is movable in the near and far directions with respect to the pipe connection portion S, similarly to the apparatus described in the first embodiment. The probe 3a is elastically urged by a spring (not shown) toward the contact side with respect to the pipe connection portion S, and the entire surface of the probe 3a against the outer surface of the tube connection portion S And a sheet-like soft elastic material (not shown).
[0063]
Further, the controller 15 built in the main body 3b of the ultrasonic thickness meter 3 is configured such that the thickness t detected by the ultrasonic thickness detection is equal to or greater than the set value ts set by the thickness setting key, as in the device described in the first embodiment. In the case of, the detected thickness t is displayed on the digital display 14 and the notification sound generator 13 is operated to generate a notification sound. When the detection thickness t is less than the set value ts, the generation of the notification sound is not performed. Only the display of the detected thickness t by the digital display 14 is performed, and when the ultrasonic thickness detection itself is inappropriate, the generation of the notification sound is not performed and an error is displayed on the digital display 14.
[0064]
In short, in the second embodiment, the arc-shaped hook-shaped tool 17 constitutes a positioning means for positioning the probe 3a in the appropriate contact state with respect to the pipe connection S by engagement with the pipe connection S. The lever-like holding member 18 constitutes a holding means for holding the positioning means in an engaged state with the pipe connecting portion S, and the grip portion 20a of the wire 20 is provided at the base end of the working extension bar 1. An operating tool for switching the holding unit between the holding operation state and the holding release state is configured.
[0065]
Further, the arc-shaped slit 21 and the moving table 22 constitute moving means for moving the probe 3a in the pipe circumferential direction of the pipe connection part S under the positioning state by the positioning means, and the grip 25a of the wire 25 is used for work. An operating tool for operating the moving means at the base end of the insertion rod 1 is configured.
[0066]
[Third embodiment]
FIGS. 9 and 10 show a pipe connection inspection apparatus in which the method of applying the probe 3a to the pipe connection S is different from the apparatus shown in the first and second embodiments. In the apparatus, instead of the hook-shaped tool, a strip-shaped tool 26 is provided at the distal end of the work insertion rod 1, and this strip-shaped tool 26 is wound around the pipe connection portion S to be inspected, thereby forming the strip-shaped tool 26. The probe 3a attached to the pipe connecting portion S is positioned and applied to the outer surface of the pipe connecting portion S in an appropriate application state, and the ultrasonic thickness detection is performed in this applied state, so that the outer pipe material Pa at the pipe connecting portion S is obtained. The joining state of the inner pipe member Pb and the inner pipe member Pb with the adhesive x is inspected.
[0067]
The band 26 has its base end connected to the distal end of the working extension bar 1, and the probe 3a is attached to a position closer to the base end side of the band 26 with the probe 3a facing inward around the band 26. Thus, by winding the band-shaped member 26 around the pipe connection portion S, the probe 3a is positioned in an appropriate abutting state in which the probe 3a faces the center of the pipe with respect to the outer surface of the pipe connection portion S.
[0068]
A guide cord 27 is connected to the tip (free end) of the band-shaped tool 26, and the middle part of the band-shaped tool 26 is connected to the tip of the work extension bar 1 by a fixed claw 28 a and a movable claw 28 b. A gripping mechanism 28 for sandwiching and gripping is provided, and as shown in FIGS. 10 (a) to 10 (c), the guide string 27 is wound in a state where the band-shaped member 26 is wound around the pipe connection portion S. By operation, the band 26 is tightened with respect to the pipe connection portion S in such a manner that the front end of the band 26 is inserted between the fixed claw 28a and the movable claw 28b of the gripping mechanism 28 so as to be tightened. In the tightened state, the band-shaped member 26 is held by the fixed claw 28a and the movable claw 28b, so that the band-shaped member 26 is held around the pipe connecting portion S.
[0069]
Regarding the operation of the gripping mechanism 28, a thin rod material 29 for pushing and pulling the movable claw 28b is inserted through the work difference rod 1 made of a tubular material, and is exposed from the base end of the work difference rod 1 to the outside. A grip portion 29a is provided at the end of the thin rod material 29, whereby the operator grips the grip portion 30a and pulls the thin rod material 29 to release the movable claw 28b from the gripping state. The operation is switched to a state (that is, a holding release state), and in the release state, the band-like tool 26 is inserted between the fixed claw 28a and the movable claw 28b, or a band is formed between the fixed claw 28a and the movable claw 28b. The tool 26 is extracted.
[0070]
In addition, in a state where the band-shaped member 26 is tightened to the pipe connecting portion S by the manual operation of the guide string 27, the movable claw 28b is switched from the grip release state to the grip operation state by pushing the thin rod member 29, The strip 26 is held in a state of being wound around the pipe connection portion S.
[0071]
Note that a sheet-like soft elastic material (not shown) is attached to the entire surface of the probe 3a to be applied to the outer surface of the pipe connection portion S, and the probe 3a is attached to the main body 3b of the ultrasonic thickness gauge 3. The built-in controller digitally displays the detected thickness t when the detected thickness t by the ultrasonic thickness detection is equal to or larger than the set value ts set by the thickness setting key, similarly to the devices described in the first and second embodiments. When the detected thickness t is less than the set value ts, the notification sound is not generated and only the display of the detected thickness t by the digital display is performed. When the ultrasonic thickness detection itself is inappropriate, the generation of the notification sound is not performed and an error is displayed on the digital display.
[0072]
In short, in the third embodiment, the band-shaped member 26 constitutes a positioning means for positioning the probe 3a in an appropriate contact state with respect to the pipe connection S by engaging with the pipe connection S. The mechanism 28 constitutes a holding means for holding the positioning means in an engagement state with the pipe connecting portion S, and the gripping portion 29a of the thin rod member 29 is provided with a holding means at the base end portion of the working extension rod 1. An operating tool for switching between the holding action state and the holding release state is configured.
[0073]
[Another embodiment]
In the above-described embodiment, the switching operation between the holding action state and the holding release state of the holding means for holding the positioning means in the engagement state with the pipe connection part S, and the probe 3a is moved in the pipe circumferential direction of the pipe connection part S Although the example in which the moving operation for moving the object is performed by an artificial force has been described, the switching operation and the moving operation may be performed by an actuator such as a motor or an electromagnetic solenoid.
[0074]
Further, in this case, a wired or wireless operating tool for the actuator may be provided on the base end of the work extender 1 or the main body 3b of the portable ultrasonic thickness gauge 3.
[0075]
In the above-described embodiment, the notification sound is automatically generated when the detected thickness t by the ultrasonic thickness detection is equal to or more than the set value ts. However, when the detected thickness t is equal to or more than the set value ts, the notification light is automatically turned on. It may be configured to be turned on.
[0076]
In the above-described embodiment, when the thickness t detected by the ultrasonic thickness detection is smaller than the set value ts or when the ultrasonic thickness detection itself is inappropriate, the generation of the notification sound is not performed. When the detected thickness t is less than the set value ts, or when the ultrasonic thickness detection itself is inappropriate, a notification sound different from the case where the detected thickness t is equal to or more than the set value ts is generated, The notification lamp may be turned on in a lighting state different from the case where t is equal to or greater than the set value ts.
[0077]
In the above-described embodiment, an example has been described in which the probe 3a is positioned in an appropriate contact state with respect to the outer surface of the pipe connection portion S by engaging the positioning means with the pipe connection portion S. The probe 3a may be positioned in an appropriate contact state with respect to the outer surface of the pipe connection S by engaging the means with the pipe P connected to the pipe connection S.
[Brief description of the drawings]
FIG. 1 is a state diagram of an inspection work showing a first embodiment.
FIG. 2 is an overall front view of the apparatus showing the first embodiment.
FIG. 3 is a cross-sectional plan view of a main part of the device showing the first embodiment.
FIG. 4 is a schematic front view of a main part of the apparatus showing the first embodiment.
FIG. 5 is an explanatory diagram of an inspection principle.
FIG. 6 is an overall front view of an apparatus showing a second embodiment.
FIG. 7 is a perspective view of a main part of an apparatus showing a second embodiment.
FIG. 8 is a schematic front view of a main part of an apparatus showing a second embodiment.
FIG. 9 is an overall perspective view of an apparatus showing a third embodiment.
FIG. 10 is a state diagram of an inspection work showing a third embodiment.
[Explanation of symbols]
1 Work stick
2 Positioning means, hook-shaped tools
3 Ultrasonic thickness gauge
3a probe
3b Ultrasonic thickness gauge body
10 Elastic biasing means
11 Soft elastic sheet material
13,15 Notification means
17 Positioning means, hooks
18 Holding means
20a Operation tool
21,22 means of transportation
25a Operation tool
26 Positioning means, strips
28 Holding means
29a Operation tool
P Piping section
Pa outer tube material
Pb inner tube material
t Detection thickness
ts Set value
S pipe connection
x adhesive

Claims

外側管材と内側管材とを嵌め合い状態にした管接続部に対し、その外面に超音波厚み計の探触子を当て付ける状態で超音波厚み検出を実施して、外側管材と内側管材との接着剤による接合状態を検査する管接続検査装置であって、
管接続部又はその管接続部に連なる配管部への係合により管接続部に対して前記探触子を適正当て付け状態に位置決めする位置決め手段を設け、
この位置決め手段を前記探触子とともに作業用差伸べ棒の先端部に装備してある管接続検査装置。Ultrasonic thickness detection is performed with the outer tube and the inner tube fitted in a fitted state with the probe of the ultrasonic thickness gauge applied to the outer surface of the tube connection. A pipe connection inspection device for inspecting a bonding state by an adhesive,
Positioning means for positioning the probe in an appropriate contact state with respect to the pipe connection portion by engagement with a pipe connection portion or a pipe portion connected to the pipe connection portion,
A pipe connection inspection device in which this positioning means is provided together with the probe at the tip of a work difference bar.

前記位置決め手段を、管接続部又はその管接続部に連なる配管部に対して引っ掛けるフック状具で構成し、
このフック状具に前記探触子を、フック状具の屈曲形状内側に向く状態にして付設してある請求項１記載の管接続検査装置。The positioning means is constituted by a hook-shaped tool which is hooked on a pipe connection or a pipe connected to the pipe connection,
2. The pipe connection inspection device according to claim 1, wherein the probe is attached to the hook-shaped member so as to face the inside of the bent shape of the hook-shaped member.

前記位置決め手段を、管接続部又はその管接続部に連なる配管部に対して巻き掛ける帯状具で構成し、
この帯状具に前記探触子を、帯状具の巻き掛け内側に向く状態にして付設してある請求項１記載の管接続検査装置。The positioning means is constituted by a band-shaped member wound around a pipe connection or a pipe connected to the pipe connection,
2. The pipe connection inspection apparatus according to claim 1, wherein the probe is attached to the band-shaped member so as to face the inside of the band-shaped member.

前記位置決め手段を管接続部又はその管接続部に連なる配管部への係合状態に保持する保持手段を設け、
この保持手段を保持作用状態と保持解除状態とに切り換える操作具を、前記作業用差伸べ棒の基端部又は携帯式にした前記超音波厚み計の本体に設けてある請求項１〜３のいずれか１項に記載の管接続検査装置。Providing holding means for holding the positioning means in an engaged state with a pipe connection or a pipe connected to the pipe connection,
The operating tool for switching the holding means between the holding action state and the holding release state is provided on the base end of the working extender or on the main body of the portable ultrasonic thickness gauge. The pipe connection inspection device according to claim 1.

前記位置決め手段による位置決め状態下において、前記探触子を管接続部の管周方向に移動させる移動手段を設け、
この移動手段の操作具を、前記作業用差伸べ棒の基端部又は携帯式にした前記超音波厚み計の本体に設けてある請求項１〜４のいずれか１項に記載の管接続検査装置。Under a positioning state by the positioning means, a moving means for moving the probe in a pipe circumferential direction of the pipe connection part is provided,
The pipe connection inspection according to any one of claims 1 to 4, wherein an operating tool of the moving means is provided on a base end portion of the work spreading bar or a main body of the portable ultrasonic thickness gauge. apparatus.

前記位置決め手段による位置決め状態下において、前記探触子を管接続部への当て付け側へ弾性的に付勢する弾性付勢手段を設けてある請求項１〜５のいずれか１項に記載の管接続検査装置。The resilient biasing means for resiliently biasing the probe toward the abutting side of the probe with respect to the pipe connecting portion under the positioning state by the positioning means is provided. Pipe connection inspection device.

管接続部に対する前記探触子の当て付け面に、その全面にわたるシート状の軟質弾性材を付設してある請求項１〜６のいずれか１項に記載の管接続検査装置。The pipe connection inspection device according to any one of claims 1 to 6, wherein a sheet-like soft elastic material over the entire surface is provided on a surface where the probe is applied to the pipe connection portion.

前記超音波厚み計による検出厚みが設定値以上のとき、管材接合状態が適正であることを報知音の発生又は報知灯の点灯により自動的に報知する報知手段を設けてある請求項１〜７のいずれか１項に記載の管接続検査装置。When the thickness detected by the ultrasonic thickness gauge is equal to or greater than a set value, a notifying unit is provided for automatically notifying that the pipe material bonding state is appropriate by generating a notification sound or by turning on a notification lamp. The pipe connection inspection device according to any one of the above items.