JP3325764B2 - Imaging means holder inserted inside tubing - Google Patents
Imaging means holder inserted inside tubingInfo
- Publication number
- JP3325764B2 JP3325764B2 JP04100696A JP4100696A JP3325764B2 JP 3325764 B2 JP3325764 B2 JP 3325764B2 JP 04100696 A JP04100696 A JP 04100696A JP 4100696 A JP4100696 A JP 4100696A JP 3325764 B2 JP3325764 B2 JP 3325764B2
- Authority
- JP
- Japan
- Prior art keywords
- link
- holder body
- holder
- pipe
- transmission means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Pipeline Systems (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば鉄塔の鋼
管内部を撮像して腐食検出を行う際に使用される管類内
部に挿入される撮像手段ホルダーに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an imaging means holder inserted into a pipe used for detecting corrosion by taking an image of a steel pipe of a steel tower, for example.
【０００２】[0002]
【従来の技術】送電線鉄塔の主柱材間に配設される水平
材や斜材に鋼管を使用した場合には、鋼管内部に雨水や
風が浸入し、長期間経過すると溶融亜鉛めっきが施され
た鋼管内面に腐食が発生することがある。このような腐
食検出において、先端にランプとＣＣＤカメラを備えた
ビデオイメージスコープなどを鋼管内部に挿入し、取得
した画像をコンピュータの画像処理により解析し、腐食
箇所の検出・判定を行う技術を本出願人は既に開発して
いる。2. Description of the Related Art When a steel pipe is used as a horizontal or diagonal member disposed between main pillars of a transmission line tower, rainwater or wind enters the inside of the steel pipe, and after a long time, hot-dip galvanizing is performed. Corrosion may occur on the inner surface of the applied steel pipe. In this type of corrosion detection, a video image scope equipped with a lamp and a CCD camera at the tip is inserted into the steel pipe, and the acquired image is analyzed by computer image processing to detect and determine the corrosion location. Applicant has already developed.
【０００３】図３に示すのは、従来におけるビデオイメ
ージスコープによる腐食検出方法であり、先端にキセノ
ンランプとＣＣＤカメラユニットを備えた検出ヘッド１
を取付けた映像伝送ケーブル２を鉄塔の水平材等の鋼管
Ａの端部から挿入し、腐食部Ｅの検出を行っている。鉄
塔の水平材や斜材は、その端部に取付けたＵ字金物Ｂを
鉄塔主柱材のガセットプレートにボルト接合すること
で、鉄塔主柱材に接続されており、鋼管ＡとＵ字金物Ｂ
との隙間から検出ヘッド１を挿入し、検出ヘッド１と映
像伝送ケーブル２との間に設けられた首振り機構（形状
記憶合金）３’により検出ヘッド１が鋼管中心に位置す
るようにしている。FIG. 3 shows a conventional corrosion detection method using a video image scope. The detection head 1 has a xenon lamp and a CCD camera unit at its tip.
Is inserted from the end of the steel pipe A such as a horizontal member of a steel tower, and the corroded portion E is detected. The horizontal and diagonal members of the tower are connected to the main column of the tower by bolting the U-shaped hardware B attached to the end to the gusset plate of the main column of the steel tower. B
The detection head 1 is inserted through the gap between the head and the video transmission cable 2 so that the detection head 1 is positioned at the center of the steel pipe by a swing mechanism (shape memory alloy) 3 ′ provided between the detection head 1 and the video transmission cable 2. .
【０００４】[0004]
【発明が解決しようとする課題】しかし、前述のような
従来の腐食検出方法では、検出ヘッド１が可撓性の映像
伝送ケーブル２に支持されているだけであるため、鋼管
内を移動するにつれて検出ヘッド１は鋼管半径方向に回
転するなどして鋼管中心から外れ、腐食部Ｅを検出でき
ない場合が生じるなど安定した画像の取得が困難であっ
た。However, in the conventional corrosion detection method as described above, since the detection head 1 is only supported by the flexible video transmission cable 2, it moves as it moves in the steel pipe. The detection head 1 is deviated from the center of the steel pipe, for example, by rotating in the radial direction of the steel pipe, and it may be difficult to detect a corroded portion E, and it is difficult to obtain a stable image.
【０００５】この発明は、前述のような問題点を解消す
べくなされたもので、その目的は、管類内に挿入されて
移動する撮像手段の検出ヘッドを常に管類の中心位置に
保持することができ、安定した映像を取得することので
きる管類内部に挿入される撮像手段ホルダーを提供する
ことにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to always hold a detection head of an imaging means which is inserted into a tube and moves, at a center position of the tube. It is an object of the present invention to provide an imaging means holder which can be inserted into a tube capable of obtaining a stable image.
【０００６】[0006]
【課題を解決するための手段】本発明の請求項１は、可
撓性で長尺の映像伝送手段の先端に設けられ管類（鉄塔
の水平材や斜材の鋼管など）の内部に挿入されて移動す
る映像検出部を管類内部の中心に保持する撮像手段ホル
ダーであって、前記映像検出部の基部から前記可撓性の
映像伝送手段の先端部までを剛体でパイプ状のホルダー
本体で覆い、このホルダー本体の周囲に管類半径方向に
伸縮可能で管類内面に押圧接触可能なガイド部を管類円
周方向に間隔をおいて複数組設け、前記ガイド部は、第
１リンクと、第２リンクと、車輪と、スリーブと、引張
コイルばねからなるリンク式の伸縮ガイドであり、第１
リンクおよび第２リンクは鋼管軸方向に延在し、第１リ
ンクの基端がホルダー本体の映像検出部側にピンを介し
て取付けられ、ホルダー本体の映像伝送手段側にスライ
ド可能に嵌合されたスリーブに第２リンクの基端がピン
を介して取付けられ、第１リンクと第２リンクの連結点
に車輪が回転自在に取付けられ、第１リンクと第２リン
クの基部同士が引張コイルばねで連結されていることを
特徴とする管類内部に挿入される撮像手段ホルダー。Means for Solving the Problems Claim 1 of the present invention is applicable.
Imaging means provided at the tip of a flexible and long image transmission means and holding an image detection unit which is inserted into a tube (horizontal member of a steel tower or a steel tube of a diagonal member) and moves at the center of the tube member. A holder, the base of the image detection unit , the flexible
A rigid pipe-shaped holder up to the tip of the video transmission means
A guide circle that is covered with the main body and that can expand and contract in the radial direction of the
A plurality of sets are provided at intervals in the circumferential direction, and the guide portion is
1 link, 2nd link, wheel, sleeve, tension
This is a link type telescopic guide composed of a coil spring.
The link and the second link extend in the axial direction of the steel pipe, and the first link
The base end of the link
And slide it on the video transmission means side of the holder body.
The base end of the second link is pinned to the sleeve fitted
And a connection point between the first link and the second link.
Wheels are rotatably mounted on the first link and the second link.
An imaging means holder inserted into a pipe, wherein bases of the hooks are connected by a tension coil spring .
【０００７】本発明の請求項２は、可撓性で長尺の映像
伝送手段の先端に設けられ管類の内部に挿入されて移動
する映像検出部を管類内部の中心に保持する撮像手段ホ
ルダーであって、前記映像検出部の基部から前記可撓性
の映像伝送手段の先端部までを剛体でパイプ状のホルダ
ー本体で覆い、このホルダー本体の周囲に管類半径方向
に伸縮可能で管類内面に押圧接触可能なガイド部を管類
円周方向に間隔をおいて複数組設け、前記ガイド部は、
半円状の板ばねと、スリーブからなるリンク式の伸縮ガ
イドであり、板ばねの一端部がホルダー本体の映像検出
部側に固定され、ホルダー本体の映像伝送手段側にスラ
イド可能に嵌合されたスリーブに板ばねの他端部が固定
されていることを特徴とする管類内部に挿入される撮像
手段ホルダー。According to a second aspect of the present invention, there is provided an imaging means which is provided at the tip of a flexible and long image transmitting means, and which holds an image detecting portion which is inserted into a tube and moves, at the center of the inside of the tube. A holder, wherein the flexible member is provided from a base of the image detecting unit ;
Rigid pipe-shaped holder up to the tip of the video transmission means
-Cover the body with a guide section that can be expanded and contracted in the radial direction of the pipe around the holder body and that can press and contact the inner surface of the pipe.
A plurality of sets are provided at intervals in the circumferential direction, and the guide portion is
Link-type telescopic gear consisting of a semicircular leaf spring and a sleeve
One end of the leaf spring detects the image of the holder body
Part, and slide it on the video transmission means side of the holder body.
The other end of the leaf spring is fixed to the sleeve fitted so that it can be guided
Imaging to be inserted inside the tubing, characterized in that is
Means holder .
【０００８】撮像手段には、ランプ，ＣＣＤカメラ，電
気信号ケーブルによるビデオイメージスコープ方式ある
いは光ファイバーによるライトガイド・イメージガイド
からなるファイバースコープ方式などがあり、ＣＣＤカ
メラ等が収納されている検出ヘッドの基端部側にホルダ
ー本体を設け、このホルダー本体に前記ガイド部を設け
る。ガイド部には、鋼管半径方向に変形伸縮する一対の
リンクの連結点に車輪を設け、引張コイルばねにより車
輪を管類内面に押圧するリンク式（図１参照、請求項
１）や半円状の板ばねからなる板ばね式（図２参照、請
求項２）、あるいはエアにより膨出する風船式などを用
いることができる。The image pickup means includes a lamp, a CCD camera, a video image scope system using an electric signal cable, or a fiber scope system comprising a light guide and an image guide using an optical fiber. A holder body is provided on the end side, and the guide section is provided on the holder body. The guide portion, the wheel provided on the connecting point of the pair of links deformed elastic steel pipe radially, link type for pressing the wheel to the tubing inner surface by the tension coil spring (see Fig. 1, claim
1) and semicircular a plate spring leaf spring (see FIG. 2,請
Claim 2 ), or a balloon type that swells with air can be used.
【０００９】以上のような構成において、ガイド部を管
類半径方向に縮径させることにより、映像検出部を管類
端部の狭い隙間などから容易に挿入することができる。
映像検出部が管類内部に位置すると、ガイド部が自動的
に管類半径方向に拡径して管類内面に押圧接触し、映像
検出部の移動中に映像検出部が常に管類の中心位置に保
持される。In the above configuration, by reducing the diameter of the guide portion in the radial direction of the pipe, the image detecting section can be easily inserted from a narrow gap at the end of the pipe.
When the image detector is located inside the tube, the guide automatically expands in the radial direction of the tube and presses against the inner surface of the tube, so that the image detector always moves to the center of the tube while the image detector is moving. Held in position.
【００１０】[0010]
【発明の実施の形態】以下、この発明を図示する一実施
例に基づいて説明する。これは、鉄塔などの鋼管内面の
腐食箇所の検出に適用した例であり、また撮像手段にＣ
ＣＤカメラによるビデオイメージスコープ方式を用いた
例である。図１にこの発明に係る撮像手段ホルダーの一
例を示し、図２に他の例を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. This is an example in which the present invention is applied to the detection of a corroded portion on the inner surface of a steel pipe such as a steel tower.
This is an example in which a video image scope system using a CD camera is used. FIG. 1 shows an example of an imaging means holder according to the present invention, and FIG. 2 shows another example.
【００１１】図１において、ビデオイメージスコープ
は、従来と同様のものを使用しており、ＣＣＤカラーカ
メラとキセノンランプを有する検出ヘッド１と、ＣＣＤ
カラーカメラからの映像信号を伝送する映像伝送ケーブ
ル２と、検出ヘッド１と映像伝送ケーブル２とを接続す
る連結部３とからなる。このようなビデオイメージスコ
ープに対して、検出ヘッド１の基部から映像伝送ケーブ
ル２の先端部までを剛体でパイプ状のホルダー本体４で
覆い、このホルダー本体４の周囲にリンク式の伸縮ガイ
ド５を設ける。In FIG. 1, a video image scope similar to the conventional one is used, and a detection head 1 having a CCD color camera and a xenon lamp, a CCD
It comprises a video transmission cable 2 for transmitting a video signal from a color camera, and a connecting portion 3 for connecting the detection head 1 and the video transmission cable 2. For such a video image scope, the base from the detection head 1 to the distal end of the video transmission cable 2 is covered with a rigid pipe-shaped holder body 4 and a link-type telescopic guide 5 is provided around the holder body 4. Provide.
【００１２】ホルダー本体４は、検出ヘッド１および映
像伝送ケーブル２にホルダーセットビス１１を介して固
定する。伸縮ガイド５は、第１リンク６と、第２リンク
７と、車輪８と、スリーブ９と、引張コイルばね１０か
らなり、鋼管円周方向に等間隔をおいて例えば３組配設
される。第１リンク６および第２リンク７は鋼管軸方向
に延在し、第１リンク６はその基端がホルダー本体４の
検出ヘッド側にピン１２を介して取付けられ、鋼管半径
方向に揺動可能とされている。The holder main body 4 is fixed to the detection head 1 and the video transmission cable 2 via a holder set screw 11. The telescopic guide 5 includes a first link 6, a second link 7, a wheel 8, a sleeve 9, and a tension coil spring 10, and, for example, three sets are arranged at equal intervals in the circumferential direction of the steel pipe. The first link 6 and the second link 7 extend in the axial direction of the steel pipe. The first link 6 has its base end attached to the detection head side of the holder body 4 via the pin 12 and can swing in the radial direction of the steel pipe. It has been.
【００１３】スリーブ９は、ホルダー本体４の映像伝送
ケーブル側にスライド可能に嵌合されており、スリーブ
固定ビス１３を介してホルダー本体４に取付けられる。
このビス１３が挿入されるホルダー本体４のビス孔は鋼
管軸方向に長い長孔としてスリーブ９が鋼管軸方向に移
動できるようにしている。スリーブ９には第２リンク７
の基端がピン１４を介して取付けられ、第２リンク７の
先端が第１リンク６の先端にピン１５を介して接続され
ている。車輪８はこのピン１５に回転自在に取付けられ
ている。引張コイルばね１０は第１リンク６と第２リン
ク７の基部同士を連結し、それぞれのリンク先端が鋼管
内面に向かう方向に付勢する。The sleeve 9 is slidably fitted on the video transmission cable side of the holder body 4 and is attached to the holder body 4 via a sleeve fixing screw 13.
The screw holes of the holder body 4 into which the screws 13 are inserted are elongated holes in the axial direction of the steel pipe so that the sleeve 9 can move in the axial direction of the steel pipe. The sleeve 9 has a second link 7
Is mounted via a pin 14, and the distal end of the second link 7 is connected to the distal end of the first link 6 via a pin 15. The wheel 8 is rotatably mounted on the pin 15. The extension coil spring 10 connects the bases of the first link 6 and the second link 7 to each other, and urges each link tip in a direction toward the inner surface of the steel pipe.
【００１４】従って、スリーブ９のスライドにより第１
リンク６および第２リンク７が変形し、車輪８を鋼管半
径方向に伸縮させることができ、さらに引張コイルばね
１０の付勢力により、車輪８は常に鋼管半径方向外方に
向かって付勢され、鋼管内面に押圧されて追従転動し、
検出ヘッド１を常に鋼管中心に位置させることができ
る。Therefore, the sliding of the sleeve 9 causes the first
The link 6 and the second link 7 are deformed, the wheel 8 can be expanded and contracted in the steel pipe radial direction, and the wheel 8 is always urged outward by the urging force of the extension coil spring 10 in the steel pipe radial direction. It is pressed against the inner surface of the steel pipe and rolls following,
The detection head 1 can always be located at the center of the steel pipe.
【００１５】以上のような構成において、腐食検出に際
しては、図１（ｃ）に示すように、第１リンク６および
第２リンク７を収縮させて、検出ヘッド１を鋼管Ａの端
部の隙間から挿入し、検出ヘッド１および伸縮ガイド５
が鋼管内部に位置すると、図１（ａ）に示すように、引
張コイルばね１０の作用により第１リンク６および第２
リンク７が自動的に拡径し、車輪８が鋼管内面に追従転
動し、検出ヘッド１の移動中に検出ヘッド１が常に鋼管
中心位置に位置する。これにより、検出ヘッド１のＣＣ
Ｄカメラは常に鋼管内面全体を撮像することができる。In the above configuration, when detecting corrosion, the first link 6 and the second link 7 are contracted to move the detection head 1 to the gap between the ends of the steel pipe A, as shown in FIG. From the detection head 1 and the telescopic guide 5
1 is located inside the steel pipe, the first link 6 and the second link 6 are actuated by the action of the tension coil spring 10 as shown in FIG.
The link 7 automatically expands in diameter, the wheels 8 roll following the inner surface of the steel pipe, and the detection head 1 is always positioned at the center of the steel pipe while the detection head 1 is moving. Thereby, the CC of the detection head 1 is
The D camera can always image the entire inner surface of the steel pipe.
【００１６】次に、図２に示すのは、板ばね式の伸縮ガ
イド５の例である。この場合、図１のリンクと引張コイ
ルばねの代わりに板ばね２０を用いている。板ばね２０
は半円状とし鋼管半径方向外側への付勢力を付与してお
き、その両端をそれぞれホルダー本体４とスリーブ９に
板ばね固定ビス２１，スリーブ固定ビス１３により固定
し、鋼管円周方向に対しては等間隔をおいて多数配置す
る。その他の構成はリンク式と同様である。Next, FIG. 2 shows an example of a leaf spring type telescopic guide 5. As shown in FIG. In this case, a leaf spring 20 is used instead of the link and the extension coil spring of FIG. Leaf spring 20
Is semicircular and a biasing force is applied outward in the radial direction of the steel pipe, and both ends thereof are fixed to the holder body 4 and the sleeve 9 by leaf spring fixing screws 21 and sleeve fixing screws 13, respectively. Many are arranged at equal intervals. Other configurations are the same as those of the link type.
【００１７】この場合も、板ばね２０を変形させてホル
ダー本体４に沿わせた状態で鋼管Ａ内に挿入し、鋼管内
部に位置すると板ばね２０の付勢力により、自動的に板
ばね２０中央部外面が鋼管内面に押圧されて追従滑動
し、検出ヘッド１を常に鋼管中心に位置させることがで
きる。Also in this case, the leaf spring 20 is deformed and inserted into the steel pipe A along the holder body 4, and when the leaf spring 20 is positioned inside the steel pipe, the leaf spring 20 is automatically biased to the center by the urging force of the leaf spring 20. The outer surface is pressed against the inner surface of the steel pipe and slides following, so that the detection head 1 can always be positioned at the center of the steel pipe.
【００１８】また、以上のようなリンク式や板ばね式に
おいて、スリーブ９に係止して図１（ｃ）や図２（ｃ）
の収縮状態を保持する係止手段を設け、鋼管内部に位置
すると前記係止手段を解除するようにすることもでき
る。また、リンク式や板ばね式に限らず、リンクや板ば
ねの代わりに風船状のものを設け、鋼管内部に位置させ
た後、エアにより膨らませるようにしてもよい。なお、
以上は鉄塔の鋼管内部の腐食検出について説明したが、
これに限らず、輸送管や圧力容器などの腐食検出にも本
発明を適用できることはいうまでもない。また、ＣＣＤ
カメラ方式に限らず、ファイバースコープ方式なども採
用できる。Further, in the above-mentioned link type or leaf spring type, as shown in FIG. 1 (c) or FIG.
It is also possible to provide locking means for maintaining the contracted state of the steel pipe, and release the locking means when positioned inside the steel pipe. Further, the present invention is not limited to the link type or the leaf spring type, and a balloon-like thing may be provided instead of the link or the leaf spring, and after being positioned inside the steel pipe, it may be inflated by air. In addition,
The above explained the detection of corrosion inside the steel pipe of the steel tower,
The present invention is not limited to this, and it goes without saying that the present invention can be applied to the detection of corrosion of transport pipes, pressure vessels, and the like. Also, CCD
Not only the camera method but also a fiberscope method can be adopted.
【００１９】[0019]
【発明の効果】この発明は、可撓性で長尺の映像伝送手
段の先端に設けられ管類の内部に挿入されて移動する映
像検出部を管類内部の中心に保持する撮像手段ホルダー
であって、前記映像検出部の基部から前記可撓性の映像
伝送手段の先端部までを剛体でパイプ状のホルダー本体
で覆い、このホルダー本体の周囲に管類半径方向に伸縮
可能で管類内面に押圧接触可能なガイド部を管類円周方
向に間隔をおいて複数組 設け、前記ガイド部は、第１リ
ンクと、第２リンクと、車輪と、スリーブと、引張コイ
ルばねからなるリンク式の伸縮ガイド、あるいは、半円
状の板ばねと、スリーブからなるリンク式の伸縮ガイド
としたため、映像検出部を管類端部の狭い隙間などから
容易に挿入することができ、かつ、映像検出部が管類内
部に位置すると、ガイド部が自動的に管類半径方向に拡
径して管類内面に押圧接触し、映像検出部の移動中に移
動する映像検出部を常に鋼管等の中心位置に保持するこ
とができ、安定した画像を取得することができ、腐食部
等の被検出部を確実に検出することができる。According to the present invention, a flexible and long video transmission device is provided.
An image that is installed at the end of a step and moves by being inserted inside the pipes
Imaging means holder for holding the image detector at the center inside the tubing
The flexible image from the base of the image detection unit
A rigid pipe-shaped holder body up to the tip of the transmission means
Cover and expands and contracts around the holder body in the radial direction of the tubing
Guide that can be pressed and contact the inside of the pipe
A plurality of sets are provided at intervals in the direction
Link, second link, wheel, sleeve, tension coil
Link-type telescopic guide consisting of a spring or semicircle
Link type telescopic guide consisting of a leaf spring and a sleeve
The video detector from the narrow gap at the end of the tubing, etc.
It can be easily inserted and the video detector is inside the tubing
Guide section automatically expands in the pipe radial direction.
The image detecting unit that is pressed into contact with the inner surface of the pipe and moves while the image detecting unit is moving can always be held at the center position of the steel pipe or the like, and a stable image can be obtained. It is possible to reliably detect a detected portion such as a corroded portion.
【図１】この発明に係る撮像手段ホルダーの一例であ
り、（ａ）は管内挿入後の状態の縦断面図、（ｂ）はそ
の横断面図、（ｃ）は管内挿入前の状態の縦断面図であ
る。FIG. 1 is an example of an imaging means holder according to the present invention, in which (a) is a longitudinal sectional view after insertion into a pipe, (b) is a cross sectional view thereof, and (c) is a longitudinal section before insertion into a pipe. FIG.
【図２】この発明に係る撮像手段ホルダーの他の例であ
り、（ａ）は管内挿入後の状態の縦断面図、（ｂ）はそ
の横断面図、（ｃ）は管内挿入前の状態の縦断面図であ
る。FIGS. 2A and 2B are other examples of the imaging means holder according to the present invention, wherein FIG. 2A is a longitudinal sectional view after insertion into a tube, FIG. 2B is a cross-sectional view thereof, and FIG. FIG.
【図３】従来の鋼管の腐食検出方法であり、（ａ）は横
断面図、（ｂ）は縦断面図、（ｃ）は鋼管端部の斜視図
である。3 (a) is a cross-sectional view, FIG. 3 (b) is a vertical cross-sectional view, and FIG. 3 (c) is a perspective view of a steel pipe end.
１…検出ヘッド ２…映像伝送ケーブル ３…連結部 ４…ホルダー本体 ５…伸縮ガイド ６…第１リンク ７…第２リンク ８…車輪 ９…スリーブ １０…引張コイルばね １１…ホルダーセットビス １２…ピン １３…スリーブ固定ビス １４…ピン １５…ピン ２０…板ばね ２１…板ばね固定ビス DESCRIPTION OF SYMBOLS 1 ... Detection head 2 ... Video transmission cable 3 ... Connecting part 4 ... Holder body 5 ... Telescopic guide 6 ... 1st link 7 ... 2nd link 8 ... Wheel 9 ... Sleeve 10 ... Tension coil spring 11 ... Holder set screw 12 ... Pin 13: Sleeve fixing screw 14: Pin 15: Pin 20: Leaf spring 21: Leaf spring fixing screw
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松末 啓雄 東京都中央区銀座６丁目２番10号 株式 会社巴コーポレーション内 (72)発明者 正岡 典夫 東京都中央区銀座６丁目２番10号 株式 会社巴コーポレーション内 (72)発明者 対馬 健夫 東京都中央区銀座６丁目２番10号 株式 会社巴コーポレーション内 (56)参考文献 特開 平６−281586（ＪＰ，Ａ) 実開 昭59−154963（ＪＰ，Ｕ) 実開 昭55−181535（ＪＰ，Ｕ) 実開 平３−91276（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 21/954 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroo Matsusue 6-2-10 Ginza, Chuo-ku, Tokyo Inside Tomoe Corporation (72) Inventor Norio Masaoka 6-2-10 Ginza, Chuo-ku, Tokyo Stock Company Within Tomoe Corporation (72) Inventor Takeo Tsushima 6-2-10 Ginza, Chuo-ku, Tokyo Inside Tomoe Corporation (56) References JP-A-6-281586 (JP, A) Japanese Utility Model Application No. 59-1554963 (JP) , U) Shokai Sho 55-181535 (JP, U) Shokai Hei 3-91276 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G01N 21/954
Claims (2)
けられ管類の内部に挿入されて移動する映像検出部を管
類内部の中心に保持する撮像手段ホルダーであって、 前記映像検出部の基部から前記可撓性の映像伝送手段の
先端部までを剛体でパイプ状のホルダー本体で覆い、こ
のホルダー本体の周囲に管類半径方向に伸縮可能で管類
内面に押圧接触可能なガイド部を管類円周方向に間隔を
おいて複数組設け、前記ガイド部は、第１リンクと、第
２リンクと、車輪と、スリーブと、引張コイルばねから
なるリンク式の伸縮ガイドであり、第１リンクおよび第
２リンクは鋼管軸方向に延在し、第１リンクの基端がホ
ルダー本体の映像検出部側にピンを介して取付けられ、
ホルダー本体の映像伝送手段側にスライド可能に嵌合さ
れたスリーブに第２リンクの基端がピンを介して取付け
られ、第１リンクと第２リンクの連結点に車輪が回転自
在に取付けられ、第１リンクと第２リンクの基部同士が
引張コイルばねで連結されていることを特徴とする管類
内部に挿入される撮像手段ホルダー。1. An imaging means holder provided at a tip end of a flexible and long image transmission means and holding an image detection unit which is inserted into a tube and moves at a center of the inside of the tube. From the base of the video detection unit to the flexible video transmission means
Cover up to the tip with a rigid, pipe-shaped holder body.
The spacing pressing contactable guide portion tubing circumferentially stretchable and tubing inner surface tubing radially around the holder body
A plurality of sets , and the guide portion includes a first link and a
From two links, wheels, sleeves and tension coil springs
The link type telescopic guide is a
The two links extend in the axial direction of the steel pipe, and the base end of the first link is
It is attached to the video detector side of the rudder body via a pin,
Slidably fitted to the video transmission means side of the holder body
The base end of the second link is attached via a pin to the sleeve
The wheel rotates automatically at the connection point between the first link and the second link.
And the bases of the first link and the second link are
An imaging means holder inserted into a pipe, which is connected by a tension coil spring .
けられ管類の内部に挿入されて移動する映像検出部を管
類内部の中心に保持する撮像手段ホルダーであって、 前記映像検出部の基部から前記可撓性の映像伝送手段の
先端部までを剛体でパイプ状のホルダー本体で覆い、こ
のホルダー本体の周囲に管類半径方向に伸縮可能で管類
内面に押圧接触可能なガイド部を管類円周方向に間隔を
おいて複数組設け、前記ガイド部は、半円状の板ばね
と、スリーブからなるリンク式の伸縮ガイドであり、板
ばねの一端部がホルダー本体の映像検出部側に固定さ
れ、ホルダー本体の映像伝送手段側にスライド可能に嵌
合されたスリーブに板ばねの他端部が固定されているこ
とを特徴とする管類内部に挿入される撮像手段ホルダ
ー。2. An imaging means holder which is provided at a tip of a flexible and long image transmission means and which holds a moving image detecting portion inserted into a tube and moved at a center of the inside of the tube. From the base of the video detection unit to the flexible video transmission means
Cover up to the tip with a rigid, pipe-shaped holder body.
The spacing pressing contactable guide portion tubing circumferentially stretchable and tubing inner surface tubing radially around the holder body
A plurality of sets , wherein the guide portion is a semicircular leaf spring.
And a link-type telescopic guide consisting of a sleeve
One end of the spring is fixed to the image detector on the holder body.
Slidably fits on the video transmission means side of the holder body
An imaging means holder inserted into a pipe, wherein the other end of the leaf spring is fixed to the combined sleeve .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04100696A JP3325764B2 (en) | 1996-02-28 | 1996-02-28 | Imaging means holder inserted inside tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04100696A JP3325764B2 (en) | 1996-02-28 | 1996-02-28 | Imaging means holder inserted inside tubing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09229868A JPH09229868A (en) | 1997-09-05 |
| JP3325764B2 true JP3325764B2 (en) | 2002-09-17 |
Family
ID=12596319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04100696A Expired - Fee Related JP3325764B2 (en) | 1996-02-28 | 1996-02-28 | Imaging means holder inserted inside tubing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3325764B2 (en) |
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|---|---|---|---|---|
| JP2004012366A (en) * | 2002-06-10 | 2004-01-15 | Nippon Chutetsukan Kk | Pipe thickness measuring device and pipe thickness measuring method |
| US7505063B1 (en) * | 2004-02-17 | 2009-03-17 | Ronald A. Basterdo | Self-adjusting and centering camera mount for inspecting pipe |
| JP2006162439A (en) * | 2004-12-07 | 2006-06-22 | Saga Univ | Apparatus for inspecting inside of concrete structure |
| JP4653670B2 (en) * | 2006-02-06 | 2011-03-16 | 株式会社東芝 | Piping work device and work method |
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| KR101103805B1 (en) | 2009-08-06 | 2012-01-06 | 한전케이피에스 주식회사 | Inspecting device |
| JP5512310B2 (en) * | 2010-02-02 | 2014-06-04 | 新日本非破壊検査株式会社 | Pipe thinning measuring device |
| US8833187B2 (en) * | 2011-02-23 | 2014-09-16 | Ut-Battelle, Llc | Stack sampling apparatus |
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| CN113701693A (en) * | 2021-10-20 | 2021-11-26 | 机械工业勘察设计研究院有限公司 | Multi-point aperture displacement measuring device and measuring method |
| CN116608363B (en) * | 2023-07-19 | 2023-10-31 | 广州继善建筑技术有限公司 | Pipeline detection robot and application method thereof |
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-
1996
- 1996-02-28 JP JP04100696A patent/JP3325764B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09229868A (en) | 1997-09-05 |
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