JP2004294318A - Apparatus and method for checking bridge - Google Patents

Apparatus and method for checking bridge Download PDF

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Publication number
JP2004294318A
JP2004294318A JP2003088489A JP2003088489A JP2004294318A JP 2004294318 A JP2004294318 A JP 2004294318A JP 2003088489 A JP2003088489 A JP 2003088489A JP 2003088489 A JP2003088489 A JP 2003088489A JP 2004294318 A JP2004294318 A JP 2004294318A
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Japan
Prior art keywords
bridge
inspection device
imaging
moving
inspection
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JP2003088489A
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Japanese (ja)
Inventor
Takuya Murakami
琢哉 村上
Katsuaki Takeda
勝昭 武田
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JFE Engineering Corp
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JFE Engineering Corp
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Priority to JP2003088489A priority Critical patent/JP2004294318A/en
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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for visually checking the occurrence of rust, cracks in concrete, and flaking of paint, and to provide an apparatus which automatically takes an image of a bridge by a camera from a lower position in various directions and is easily moved in the direction of a bridge axis, and a method for checking a bridge using the apparatus. <P>SOLUTION: The apparatus comprises (1) an imaging means, (2) a moving means which moves the imaging means, and (3) a control means which controls an imaging position of the imaging means and/or moving conditions of the moving means. An attached imaging device is moved so that it can takes a desired image. When a handrail is not used, it moves on a guiding member such as a cable, a rod-like member, and a rail which are arranged in the lower part of an I main girder, with parallel to the bridge axis of the bridge. When a handrail is used for the move, it moves in the direction of the bridge axis of the bridge along the handrail. The control means, prior to inspection working, performs preset control which presets an imaging position of the imaging means and/or moving conditions of the moving means based on a blueprint of the bridge, and preferably, constitutes a control system using a microcomputer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】本発明は橋梁の維持管理のための点検装置およびそれを用いた橋梁の点検方法に関し、特に溶接やコンクリートのひび割れ、塗装の劣化状況などを目視検査するために画像を取りこむ装置およびそれを用いた橋梁の点検方法に関する。
【0002】
【従来の技術】橋梁を通過する交通量の増大や、一台当たりの積載量の増加により、橋梁を供用後の維持管理が重要となっている。維持管理では目視により溶接のひび割れ、コンクリートのひび割れ、塗装の劣化状況を検査することが基本で、橋梁の下から双眼鏡などを用いて観察することが多い。
【0003】
目視検査のため検査路を設けたり、橋梁の下が河川、海岸、鉄道などの場合は、足場をかけて至近距離から観察し、写真撮影を行い目視検査を行う。目視検査の場合、検査頻度は半年もしくは一年に一度の点検を実施することが多く、震災後などは直ちに実施する。
【0004】
最近は、目視検査を自動化する試みが多くなされ、ロボット、桁上から桁下を観察するための点検装置やカメラなどで取りこんだ画像から損傷状況を判定する方法などが開発されている。
【0005】
非特許文献1は、橋梁の維持管理に用いる桁下診断システムに関し、橋上から桁下の状況をデジタルカメラで撮影する点検装置と、撮影したデジタル画像を解析するシステムから構成される桁下診断システムを用いて、ひび割れ長さや分布を自動計測し損傷状況を定量的に把握することが記載されている。
【0006】
特許文献1は、橋梁の床板のひび割れ検出方法およびその表示方法に関し、床板のように広い範囲を示す画像において、小さいひび割れ、疵などの画像が不鮮明になることを改善するため、画像を小さく分割し、小区分毎にこれらの信号を抽出、定量化処理を行うことが記載されている。
【0007】
【非特許文献1】住友重機械工業 荒井ら:桁下診断システムの開発、土木学会第57回年次学術講演会、vol.231,p.461−462,平成14年9月
【0008】
【特許文献1】特開2001−99784号公報
【0009】
【発明が解決しようとする課題】
橋梁の維持管理のための点検を目視で行うと橋梁の桁、接合部、床版下部などに検査員が近づけるように足場を複数架ける必要があり、手間が多く、検査費も高額となる。
【0010】
非特許文献1に記載されているような橋上から桁下の状況をデジタルカメラで撮影する点検装置は、橋梁の下方で橋軸直角方向に伸びた水平アーム上を撮影ユニットが移動して撮影を行うが、撮影位置の設定や、橋の上から水平アームをおろす位置を橋軸方向に変更設定する際に人力が必要であり、十分自動化されているとは言い難い。
【0011】
また、特許文献1に記載されているひび割れ検出方法に用いられるひび割れ検出装置は、道路橋下に配置され、XY方向に移動する台車上に上向きにカメラが配置されているものであり、複雑な個所の撮影に適したものとは言い難い。
【0012】
そこで本発明は、カメラにより橋梁を下方から種々の方向に自動的に撮影することが可能で、橋軸方向への移動も容易な橋梁の点検装置及びその装置を用いた橋梁点検方法を提案する。
【0013】
【課題を解決するための手段】
本発明の目的は以下の手段により達成できる。
1.以下の手段を備えたことを特徴とする橋梁の点検装置。
▲1▼撮像手段
▲2▼前記撮像手段を移動させる移動手段
▲3▼前記撮像手段の撮影位置および/または前記移動手段の移動条件を橋梁の設計図を基にプリセット設定する制御手段
2.撮像手段の撮影位置および/または前記移動手段の移動条件を橋梁の設計図を基にプリセット設定することを特徴とする橋梁の点検方法。
【0014】
【発明の実施の形態】
以下、図面を用いて本発明を詳細に説明する。本発明に係る点検装置は点検装置の移動に手摺を利用する場合と、利用しない場合によってその実施態様が異なる。
1.手摺を利用する場合
図1はRC床版とI主桁を備えた橋梁に、本発明に係る点検装置を取り付けた場合の実施態様の一例を模式的に示し、(a)は正面外観図、(b)は側面外観図を示す。
【0015】
図において、1は橋梁、2はRC床版、3はI主桁、4,4aはガイド部材、5は撮影装置、6は点検装置を示す。
【0016】
点検装置6は橋梁の橋軸方向と平行でI主桁3の下方に配置したガイド部材4,4aのいずれかに(図では4a)取りつけられ、橋軸方向に移動する。また、点検装置6に取りつけられた撮影装置5はガイド部材の任意の円周方向に回転する。
【0017】
図2は点検装置の概略構造を示す図で(a)は側面図、(b)は正面図を示す。
【0018】
図において、5は撮影装置、6は点検装置、7はケーブル(ガイド部材)、8は走行用ローラ、9は撮影装置用ガイドレール、10は筒状部材を示す。
【0019】
点検装置6は移動手段としてケーブル(ガイド部材)7をその内部に挿通させる筒状部材10と前記筒状部材10に取りつけられた走行用ローラ8を備え、駆動用モータ(図示しない)により、ケーブル(ガイド部材)7上を移動する。
【0020】
筒状部材10には、撮影装置5が円周方向に移動できるように撮影装置用ガイドレール9が取りつけられている。撮影装置5は駆動用モータを有する走行台車(図示しない)に取りつけられてガイドレール9上を移動する。また、撮影装置5には所望の画像が得られるように撮影方向を調整する機構を設ける。
【0021】
本点検装置の場合、撮影装置5が所望の位置を撮影できるように、点検装置6がケーブル(ガイド部材)7上を移動し、撮影装置5が筒状部材10に取りつけられたガイドレール9上を回転移動する。
【0022】
ガイド部材4,4aは、常時、橋梁1に取りつけても、点検の際にのみ取りつけても良い。ガイド部材4、4aとしてケーブルの外に、棒状の部材やレールを用いても良い。
撮像手段は被写体を撮像し映像信号を出力するカメラなどの撮影装置であれば良く、画像処理が容易なデジタルカメラ、デジタルビデオカメラを使用することが好ましい。
【0023】
図3は上述した点検装置を用いた作業を説明する図で、ガイドレール9上の撮影装置5が制御系からの指示により(a)の場合、I主桁3とRC床版2の接続部A1点を撮影し、(b)の場合、I主桁3の塗装状況を点検するため、I主桁3の側方A2点を撮影し、(c)の場合は、RC床版2の下面側A3点を撮影する。
【0024】
制御手段は、点検作業に先だって、撮像手段の撮影位置および/または移動手段の移動条件をプリセットするプリセット制御を行う。橋梁の場合、設計図を基にして誤差が数mm以下で製作され、その点検が必要とされる個所も、接合部、コンクリート床版部、排水部分、支承などの取りつけ部などほぼ決まっているため、撮影位置を点検対象の橋梁の設計図において特定し、プリセット方式で設定することが可能である。
【0025】
撮影位置をプリセット方式で設定した場合は、その設定値から撮像装置の移動手段の移動条件を求めるようにする。または所望の画像が得られるように撮像装置の、移動手段における移動条件として位置、例えばガイド部材4、4aやガイドレール9における位置をプリセットしても良い。更に両者を併用しても良い。
【0026】
制御手段をマイクロコンピュータを用いて構成すると点検毎に橋梁の構造が異なったり、撮影位置を変更する場合も容易に対応でき、且つ撮影した画像を処理し、維持管理に必要なデータも蓄積でき好ましい。
【0027】
制御手段を構成する制御系に用いる駆動源や位置検出器等の種類は特に規定しない。本発明では撮像手段の撮影位置および/または移動手段の移動条件の他に、撮像装置に、目視点検に必要な指令値をプリセットすることも可能である。
【0028】
次に、手摺を利用しない場合における本発明に係る点検装置の他の実施態様を示す。図4は他の実施態様に係る点検装置を説明する図で、橋梁に取り付けた状態を示す。(a)は正面図、(b)は側面図で、図において3aはI主桁3の下フランジを示し、点検装置6aは下フランジ3aに吊り下がりながら橋軸方向に移動する。
【0029】
図5は点検装置の構成を模式的に示す図で、(a)は正面図、(b)は上面図、(c)は側面図を示す。図において11、11aは吊り下げ用部材、12、12aは撮影装置支持部材を示す。
【0030】
吊り下げ用部材11、11aは点検装置6aを磁力により下フランジ3aに吊り下げるための部材で、磁力を発生(オン)したり、消滅(オフ)したりすることが可能な構造で、11aは点検装置6aに対し、橋軸方向の前後に駆動用モータ(図示しない)などで移動可能となっている。
【0031】
点検装置6aを移動させる場合、部材11の磁力を発生(オン)させ、一方部材11aの磁力を消滅(オフ)させ、部材11をその磁力で下フランジ3aに固着させ、点検装置6aを下フランジ3aに吊り下げた状態とする。次に、可動可能な部材11aを所望する方向に移動させる。
【0032】
その後、部材11aの磁力を発生させ、部材11の磁力を消滅(オフ)し、部材11aを下フランジ3aに固着させ、点検装置6aを部材11aの磁力で部材下フランジ3aに吊り下げた状態とする。この状態において11aを可動させる制御を行うと磁力で下フランジ3aに固着している11aに代わり、点検装置6aが移動する
撮影装置支持部材12(12a)は一方の端部に撮影装置5a(5b)が取り付けられ、他方の端部は撮影装置が橋梁の下方を撮影できるように点検装置6aに取りつけられる。撮影装置5a(5b)は所望の方向を向けるような架台(図では省略)を介して撮影装置支持部材12(12a)の先端に取り付ける。図6に本点検装置を用いて橋梁の各部を撮影する様子を模式的に示す。
2.手摺を利用する場合
次に点検装置の移動に手摺を利用する場合における本発明に係る点検装置の実施形態を説明する。制御系はプリセット型制御とするため、以下の説明では制御系に関する説明は省略する。
【0033】
図7はRC床版に手摺がつけられた橋梁で(a)は正面図、(b)は側面図を示す。図において1aはRC床版に手摺がつけられた橋梁、13は手摺を示す。
【0034】
図8は本発明に係る点検装置を橋梁1aに適用した場合の実施形態の一例を示し、(a)は正面外観図、(b)は点検装置の機能を説明する上面外観図を示す。図において、6bは点検装置、14はアーム部材1、15はアーム部材2、16は走行台車、5cはカメラを示す。
【0035】
点検装置6bは走行台車16、アーム部材1(14)、アーム部材2(15)、カメラ5cを有する。走行台車16は手摺13をガイド部材とし、橋軸方向に移動する。走行台車16には、橋軸方向に対しほぼ鉛直方向となるようにアーム部材2(15)が取りつけられる。
【0036】
アーム部材2(15)には、アーム部材1(14)が略直角方向で、上下に昇降可能なように、且つアーム部材2(15)を軸に回転可能なように取りつけられる。アーム部材1(14)はその先端部にカメラ5cが橋梁を下方から撮影するように取りつけられる。アーム部材1(14)とアーム部材2(15)はカメラ5cが橋梁を所望の位置で下方から撮影できるように十分な長さを有するものとし、アーム部材1(14)は伸縮可能な構造とする。走行台車、アーム部材はそれぞれ駆動源(図示しない)を有し、プリセットされた撮影位置に撮影装置を移動させる。
【0037】
図9は上述した点検装置を用いた場合の作業内容を模式的に説明する図で、(a)は橋軸方向に点検装置を橋梁端部B1から橋梁端部B2に向けて移動させる様子を示し、(b)(c)はアーム部材1(14)を伸縮して所望の位置を撮影する状況を示す。
【0038】
図10は図9の点検装置において、走行台車16bをRC床版2上に配置し、手摺13に沿って移動させる場合を示す。
【0039】
図9、図10に示した点検装置のいずれの場合であっても、撮影位置がプリセットされるので作業者17は点検装置を橋梁上に設定するだけで良い。
【0040】
本発明における撮像手段を、ペンキや錆などのハツリ手段や、ペンキ塗装手段とすれば、維持作業にも適用可能である。また、点検作業から維持作業まで連続して行えるように撮像手段とこれらの手段を交換可能としても良い。
【0041】
【発明の効果】本発明によれば足場などを設けることなく低廉に橋梁の点検作業が実施でき、また撮影位置をプリセットできるため、作業中の作業員の負担が減り高精度な点検作業が可能となる。また、点検作業用制御プログラムの変更のみで多様な橋梁の点検作業が可能となる。
【図面の簡単な説明】
【図1】手摺を利用しない場合における本発明に係る点検装置の一実施形態を示す図。
【図2】図1の点検装置の概略構成を示す図。
【図3】図1の点検装置を用いて橋梁を点検作業する際の点検装置の動きを示す図。
【図4】手摺を利用しない場合における本発明に係る点検装置の他の実施形態を示す図。
【図5】図4の点検装置の概略構成を示す図。
【図6】図4の点検装置を用いて橋梁を点検作業する際の点検装置の動きを示す図。
【図7】手摺のある橋梁の構造を示す図。
【図8】手摺を利用する場合における本発明に係る点検装置の一実施形態を示す図。
【図9】手摺を利用する場合における本発明に係る点検装置の他の実施形態を示す図。
【図10】手摺を利用する場合における本発明に係る点検装置の他の実施形態を示す図。
【符号の説明】
1 、1a 橋梁
2 RC床版
3 I主桁
31 I主桁の下フランジ
4,4a ガイド部材
5、5a,5b,5c,5d 撮影装置
6、6a,6b,6c 点検装置
7 ケーブル(ガイド部材)
8 走行用ローラ
9 撮影装置用ガイドレール
10 筒状部材
11、11a 吊り下げ用部材
12、12a 撮影装置支持部材
13 手摺
14 アーム部材1
15 アーム部材2
16、16a 走行台車
17 作業者
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection device for maintaining and managing a bridge and a method for inspecting a bridge using the same, and more particularly, to an image for visually inspecting welding, cracking of concrete, deterioration of paint, and the like. The present invention relates to a loading device and a bridge inspection method using the same.
[0002]
2. Description of the Related Art Due to an increase in traffic volume passing through a bridge and an increase in a load per vehicle, it is important to maintain the bridge after operation. In maintenance, it is essential to visually inspect for cracks in welding, cracks in concrete, and deterioration of paint, often using binoculars or the like from under the bridge.
[0003]
Inspection roads should be set up for visual inspection, and when the bridge is under rivers, coasts, railways, etc., use scaffolding to observe from a very close distance, take photographs, and conduct visual inspection. In the case of visual inspection, the inspection frequency is often six months or once a year, and immediately after the earthquake.
[0004]
Recently, many attempts have been made to automate visual inspection, and a robot, a check device for observing a girder from above a girder, a method of determining a damage state from an image captured by a camera, and the like have been developed.
[0005]
Non-patent Document 1 relates to a girder diagnosis system used for bridge maintenance and management, and relates to a girder diagnosis system including an inspection device for photographing a state of a girder from above a bridge with a digital camera, and a system for analyzing a photographed digital image. It is described that the length and distribution of cracks are automatically measured and the damage state is quantitatively grasped by using the method.
[0006]
Patent Literature 1 relates to a method for detecting a crack in a floor panel of a bridge and a display method thereof, in order to improve the image of a small crack, a flaw, or the like from being unclear in an image showing a wide range such as a floor panel, dividing the image into small pieces. It describes that these signals are extracted and quantified for each subsection.
[0007]
[Non-Patent Document 1] A Sumitomo Heavy Industries, Ltd. Arai et al .: Development of Under-Sparing Diagnosis System, Japan Society of Civil Engineers 57th Annual Scientific Lecture, vol. 231, p. 461-462, September 2002
[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-99784
[Problems to be solved by the invention]
Inspections for maintenance of the bridge by visual inspection require multiple scaffolds so that the inspector can approach the bridge girder, joint, and lower part of the floor slab, etc., which is troublesome and expensive.
[0010]
The inspection device described in Non-Patent Document 1 for photographing a situation under a girder from above a bridge with a digital camera is a device in which a photographing unit moves on a horizontal arm extending in a direction perpendicular to a bridge axis below a bridge to take a photograph. However, it requires human power to set the shooting position and change the position where the horizontal arm is lowered from above the bridge in the bridge axis direction, and it cannot be said that the system is fully automated.
[0011]
Further, the crack detection device used in the crack detection method described in Patent Document 1 is arranged under a road bridge, and a camera is arranged upward on a carriage moving in the XY directions, which is a complicated part. It is hard to say that it is suitable for shooting.
[0012]
Therefore, the present invention proposes a bridge inspection apparatus and a bridge inspection method using the apparatus, which can automatically photograph a bridge from below in various directions by a camera and can easily move in the bridge axis direction. .
[0013]
[Means for Solving the Problems]
The object of the present invention can be achieved by the following means.
1. An inspection device for a bridge, comprising:
(1) imaging means (2) moving means for moving the imaging means (3) control means for presetting a photographing position of the imaging means and / or moving conditions of the moving means based on a design drawing of a bridge; A method for inspecting a bridge, comprising presetting a photographing position of an imaging unit and / or a moving condition of the moving unit based on a design drawing of the bridge.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. The embodiment of the inspection device according to the present invention differs depending on whether the handrail is used for moving the inspection device or not.
1. FIG. 1 schematically shows an example of an embodiment in which the inspection device according to the present invention is attached to a bridge provided with an RC floor slab and an I main girder, where (a) is a front external view, (B) shows a side view.
[0015]
In the figure, 1 is a bridge, 2 is an RC slab, 3 is an I main girder, 4 and 4a are guide members, 5 is a photographing device, and 6 is an inspection device.
[0016]
The inspection device 6 is attached to one of the guide members 4 and 4a (4a in the figure) arranged below the I-girder 3 in parallel with the bridge axis direction of the bridge, and moves in the bridge axis direction. The photographing device 5 attached to the inspection device 6 rotates in an arbitrary circumferential direction of the guide member.
[0017]
2A and 2B show a schematic structure of the inspection device, wherein FIG. 2A is a side view and FIG. 2B is a front view.
[0018]
In the figure, 5 is a photographing device, 6 is an inspection device, 7 is a cable (guide member), 8 is a running roller, 9 is a guide rail for the photographing device, and 10 is a cylindrical member.
[0019]
The inspection device 6 includes a cylindrical member 10 as a moving means, through which a cable (guide member) 7 is inserted, and a traveling roller 8 attached to the cylindrical member 10, and the cable is driven by a driving motor (not shown). It moves on (guide member) 7.
[0020]
A guide rail 9 for the photographing device is attached to the cylindrical member 10 so that the photographing device 5 can move in the circumferential direction. The photographing device 5 is mounted on a traveling carriage (not shown) having a drive motor and moves on a guide rail 9. Further, the photographing device 5 is provided with a mechanism for adjusting the photographing direction so that a desired image can be obtained.
[0021]
In the case of the present inspection device, the inspection device 6 moves on the cable (guide member) 7 so that the imaging device 5 can photograph a desired position, and the imaging device 5 is moved on the guide rail 9 attached to the cylindrical member 10. To rotate.
[0022]
The guide members 4 and 4a may be always attached to the bridge 1, or may be attached only at the time of inspection. As the guide members 4 and 4a, a rod-shaped member or a rail may be used in addition to the cable.
The imaging unit may be any imaging device such as a camera that captures an image of a subject and outputs a video signal, and it is preferable to use a digital camera or digital video camera that can easily perform image processing.
[0023]
FIG. 3 is a diagram for explaining the operation using the above-described inspection device. In the case where the photographing device 5 on the guide rail 9 is (a) according to an instruction from the control system, the connecting portion between the I main girder 3 and the RC slab 2 is shown. A1 point is photographed, and in the case of (b), the side A2 point of the I main girder 3 is photographed to check the painting condition of the I main girder 3, and in the case of (c), the lower surface of the RC floor slab 2 The side A3 is photographed.
[0024]
The control unit performs a preset control for presetting a photographing position of the imaging unit and / or a moving condition of the moving unit before the inspection work. In the case of a bridge, it is manufactured with an error of several mm or less based on the design drawing, and the locations that need to be inspected are almost fixed, such as joints, concrete slabs, drainage parts, mounting parts such as bearings Therefore, the photographing position can be specified in the design drawing of the bridge to be inspected, and can be set by the preset method.
[0025]
When the photographing position is set by the preset method, the moving condition of the moving means of the imaging device is obtained from the set value. Alternatively, a position, for example, a position on the guide members 4, 4a or the guide rail 9, of the imaging device may be preset so that a desired image is obtained. Further, both may be used in combination.
[0026]
If the control means is configured using a microcomputer, it is possible to easily cope with the case where the bridge structure is different for each inspection or the photographing position is changed, and it is possible to process the photographed image and accumulate data necessary for maintenance and management, which is preferable. .
[0027]
The types of the driving source, the position detector, and the like used in the control system constituting the control means are not particularly limited. In the present invention, a command value required for visual inspection can be preset in the imaging device in addition to the imaging position of the imaging unit and / or the moving condition of the moving unit.
[0028]
Next, another embodiment of the inspection device according to the present invention when a handrail is not used will be described. FIG. 4 is a view for explaining an inspection device according to another embodiment, and shows a state where the inspection device is attached to a bridge. (A) is a front view and (b) is a side view. In the figure, 3a shows a lower flange of the I main girder 3, and the inspection device 6a moves in the bridge axis direction while hanging from the lower flange 3a.
[0029]
5A and 5B are diagrams schematically showing the configuration of the inspection device, wherein FIG. 5A is a front view, FIG. 5B is a top view, and FIG. 5C is a side view. In the figures, 11 and 11a denote hanging members, and 12 and 12a denote imaging device supporting members.
[0030]
The suspension members 11 and 11a are members for suspending the inspection device 6a on the lower flange 3a by magnetic force, and have a structure capable of generating (ON) or extinguishing (OFF) a magnetic force. The inspection device 6a can be moved back and forth in the bridge axis direction by a drive motor (not shown) or the like.
[0031]
When moving the inspection device 6a, the magnetic force of the member 11 is generated (ON), the magnetic force of the member 11a is eliminated (OFF), and the member 11 is fixed to the lower flange 3a by the magnetic force. 3a. Next, the movable member 11a is moved in a desired direction.
[0032]
Then, the magnetic force of the member 11a is generated, the magnetic force of the member 11 is eliminated (turned off), the member 11a is fixed to the lower flange 3a, and the inspection device 6a is suspended on the member lower flange 3a by the magnetic force of the member 11a. I do. In this state, when the control to move the 11a is performed, the photographing device supporting member 12 (12a) to which the inspection device 6a moves is replaced with the photographing device 5a (5b) at one end instead of the 11a fixed to the lower flange 3a by magnetic force. ) Is attached, and the other end is attached to the inspection device 6a so that the photographing device can photograph below the bridge. The photographing device 5a (5b) is attached to the distal end of the photographing device support member 12 (12a) via a frame (not shown) facing a desired direction. FIG. 6 schematically shows a state in which each part of the bridge is photographed using the inspection device.
2. Next, an embodiment of the inspection device according to the present invention in a case where a handrail is used for moving the inspection device will be described. Since the control system is a preset type control, a description of the control system will be omitted in the following description.
[0033]
7A and 7B show a bridge in which handrails are attached to an RC slab, wherein FIG. 7A is a front view and FIG. 7B is a side view. In the figure, 1a indicates a bridge with handrails attached to the RC slab, and 13 indicates a handrail.
[0034]
8A and 8B show an example of an embodiment in which the inspection device according to the present invention is applied to a bridge 1a, wherein FIG. 8A is a front external view, and FIG. 8B is a top external view for explaining the function of the inspection device. In the figure, 6b is an inspection device, 14 is an arm member 1, 15 is an arm member 2, 16 is a traveling cart, and 5c is a camera.
[0035]
The inspection device 6b includes a traveling cart 16, an arm member 1 (14), an arm member 2 (15), and a camera 5c. The traveling carriage 16 uses the handrail 13 as a guide member and moves in the bridge axis direction. The arm member 2 (15) is attached to the traveling carriage 16 so as to be substantially perpendicular to the bridge axis direction.
[0036]
The arm member 1 (14) is attached to the arm member 2 (15) such that the arm member 1 (14) can move up and down in a substantially perpendicular direction, and can rotate about the arm member 2 (15). The arm member 1 (14) is attached to the tip so that the camera 5c photographs the bridge from below. The arm member 1 (14) and the arm member 2 (15) have a sufficient length so that the camera 5c can photograph the bridge at a desired position from below, and the arm member 1 (14) has an extendable structure. I do. Each of the traveling cart and the arm member has a drive source (not shown), and moves the photographing device to a preset photographing position.
[0037]
FIG. 9 is a diagram schematically illustrating the work content when the above-described inspection device is used. FIG. 9A illustrates a state in which the inspection device is moved from the bridge end B1 to the bridge end B2 in the bridge axis direction. (B) and (c) show a situation in which the arm member 1 (14) is expanded and contracted to photograph a desired position.
[0038]
FIG. 10 shows a case in which the traveling cart 16b is arranged on the RC floor slab 2 and moved along the handrail 13 in the inspection device of FIG.
[0039]
In any of the inspection devices shown in FIGS. 9 and 10, the photographing position is preset, so that the worker 17 only needs to set the inspection device on the bridge.
[0040]
If the imaging means in the present invention is a fraying means such as paint or rust, or a paint painting means, it can be applied to maintenance work. The imaging means and these means may be exchangeable so that the inspection work and the maintenance work can be performed continuously.
[0041]
According to the present invention, bridge inspection work can be carried out at low cost without providing a scaffold, etc., and the photographing position can be preset, so that the burden on the worker during the work is reduced and high-precision inspection work is possible. It becomes. In addition, various bridge inspections can be performed simply by changing the inspection control program.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of an inspection device according to the present invention when a handrail is not used.
FIG. 2 is a diagram showing a schematic configuration of the inspection device of FIG. 1;
FIG. 3 is a diagram showing the movement of the inspection device when inspecting a bridge using the inspection device of FIG. 1;
FIG. 4 is a diagram showing another embodiment of the inspection device according to the present invention when a handrail is not used.
FIG. 5 is a diagram showing a schematic configuration of the inspection device of FIG. 4;
FIG. 6 is a view showing the movement of the inspection device when inspecting a bridge using the inspection device of FIG. 4;
FIG. 7 is a diagram showing the structure of a bridge with handrails.
FIG. 8 is a diagram showing an embodiment of an inspection device according to the present invention when a handrail is used.
FIG. 9 is a diagram showing another embodiment of the inspection device according to the present invention when a handrail is used.
FIG. 10 is a diagram showing another embodiment of the inspection device according to the present invention when a handrail is used.
[Explanation of symbols]
1, 1a Bridge 2 RC slab 3 I main girder 31 I main girder lower flange 4, 4a Guide member 5, 5a, 5b, 5c, 5d Photographing device 6, 6a, 6b, 6c Inspection device 7 Cable (guide member)
Reference Signs List 8 Running roller 9 Guide rail 10 for photographing device Cylindrical member 11, 11a Hanging member 12, 12a Supporting member 13 for photographing device Handrail 14 Arm member 1
15 Arm member 2
16, 16a Traveling trolley 17 worker

Claims (2)

以下の手段を備えたことを特徴とする橋梁の点検装置。
▲1▼撮像手段
▲2▼前記撮像手段を移動させる移動手段
▲3▼前記撮像手段の撮影位置および/または前記移動手段の移動条件を橋梁の設計図を基にプリセット設定する制御手段
An inspection device for a bridge, comprising:
(1) Imaging means (2) Moving means for moving the imaging means (3) Control means for presetting the photographing position of the imaging means and / or the moving conditions of the moving means based on the design drawing of the bridge.
撮像手段の撮影位置および/または前記移動手段の移動条件を橋梁の設計図を基にプリセット設定することを特徴とする橋梁の点検方法。A method for inspecting a bridge, wherein a photographing position of an imaging unit and / or a moving condition of the moving unit are preset based on a design drawing of the bridge.
JP2003088489A 2003-03-27 2003-03-27 Apparatus and method for checking bridge Pending JP2004294318A (en)

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JP2007077653A (en) * 2005-09-14 2007-03-29 Yachiyo Engineering Co Ltd Equipment and method for inspecting bridge
KR100945144B1 (en) 2008-06-04 2010-03-02 한국도로공사 A camera capable of arranging continuous images
KR101010266B1 (en) 2008-08-25 2011-01-21 주식회사 이제이텍 Robot system
CN102168407A (en) * 2011-03-23 2011-08-31 中交三航局第三工程有限公司 Method for preventing and controlling cracks of long and big-segment bracket cantilever box girder structure
JP2014092391A (en) * 2012-11-01 2014-05-19 Yokogawa Bridge Holdings Corp Welding flaw outer appearance inspection system and welding flaw outer appearance inspection method
CN104568972A (en) * 2015-02-09 2015-04-29 中核华泰建设有限公司 Bottom surface crack detection device for concrete bridge
JP2015111111A (en) * 2013-10-29 2015-06-18 株式会社イクシスリサーチ Deterioration diagnosis support system, database, database creation device, and deterioration diagnosis support method
JP2016079615A (en) * 2014-10-14 2016-05-16 富士フイルム株式会社 Bridge inspection robot system
JP2016079614A (en) * 2014-10-14 2016-05-16 富士フイルム株式会社 Bridge inspection robot system
CN109989343A (en) * 2019-05-17 2019-07-09 中交公路规划设计院有限公司 A kind of guide tracked bridge detection robot and its construction method
JP2021110110A (en) * 2020-01-07 2021-08-02 株式会社Ihiインフラシステム Hanger for suspension scaffold and suspension scaffold equipped therewith
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007077653A (en) * 2005-09-14 2007-03-29 Yachiyo Engineering Co Ltd Equipment and method for inspecting bridge
KR100945144B1 (en) 2008-06-04 2010-03-02 한국도로공사 A camera capable of arranging continuous images
KR101010266B1 (en) 2008-08-25 2011-01-21 주식회사 이제이텍 Robot system
CN102168407A (en) * 2011-03-23 2011-08-31 中交三航局第三工程有限公司 Method for preventing and controlling cracks of long and big-segment bracket cantilever box girder structure
JP2014092391A (en) * 2012-11-01 2014-05-19 Yokogawa Bridge Holdings Corp Welding flaw outer appearance inspection system and welding flaw outer appearance inspection method
JP2015111111A (en) * 2013-10-29 2015-06-18 株式会社イクシスリサーチ Deterioration diagnosis support system, database, database creation device, and deterioration diagnosis support method
JP2016079614A (en) * 2014-10-14 2016-05-16 富士フイルム株式会社 Bridge inspection robot system
JP2016079615A (en) * 2014-10-14 2016-05-16 富士フイルム株式会社 Bridge inspection robot system
CN104568972A (en) * 2015-02-09 2015-04-29 中核华泰建设有限公司 Bottom surface crack detection device for concrete bridge
CN109989343A (en) * 2019-05-17 2019-07-09 中交公路规划设计院有限公司 A kind of guide tracked bridge detection robot and its construction method
CN109989343B (en) * 2019-05-17 2024-03-12 中交公路规划设计院有限公司 Guide rail type bridge detection robot and construction method thereof
JP2021110110A (en) * 2020-01-07 2021-08-02 株式会社Ihiインフラシステム Hanger for suspension scaffold and suspension scaffold equipped therewith
JP7313289B2 (en) 2020-01-07 2023-07-24 株式会社Ihiインフラシステム Suspension tool for suspended scaffold and suspended scaffold equipped with the same
CN114199485A (en) * 2021-11-22 2022-03-18 中城建勘(浙江)检测科技有限公司 Bridge bottom concrete crack detection device
CN114199485B (en) * 2021-11-22 2024-06-11 中城建勘(浙江)检测科技有限公司 Bridge bottom concrete crack detection device
JP7444385B1 (en) 2023-12-08 2024-03-06 株式会社Ikemoto Installation structure of work scaffolding for overpass

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