BRIDGE INSPECTION ROBOT SYSTEM

PROBLEM TO BE SOLVED: To provide a bridge inspection robot system capable of definitely inspecting an undersurface and both side parts of a bridge by reducing movement restriction due to a structure of the bridge.SOLUTION: First and second suspending carriages 11, 12 have four wheels 41 to 44 and first to third displacement parts 46 to 48 and run in a state of being suspended from a bottom flange 30c. When the suspending carriage comes across an obstacle such as a splice plate 31, the first wheel 41 to the third wheel 43 escape from a top face of the bottom flange 30c through the first to third displacement parts 46 to 48. The first suspending carriage 11 and the second suspending carriage 12 are connected by a rail 13 with an entire length L4 longer than a distance L3 between main girders 25. A camera truck 73 runs on the rail 13 and passes below the suspending carriages 11, 12, which enables a camera to take photos of not only an inside surface between two main girders 25 to be inspected but outer surfaces of the main girders 25 and makes refixing of the camera 15 and the suspending carriages 11, 12 unnecessary.SELECTED DRAWING: Figure 1 【課題】橋梁の構造による移動の制限を少なくし、橋梁の下面部分や橋梁の両側部分を確実に点検することができる橋梁検査ロボットシステムを提供する。【解決手段】第１及び第２懸垂台車１１，１２は、４つの車輪４１〜４４、第１〜第３変位部４６〜４８を有し、下フランジ３０ｃに懸垂した状態で走行する。添接板３１のような障害物がある場合に、第１〜第３変位部４６〜４８により、第１車輪４１〜第３車輪４３は下フランジ３０ｃの上面から退避する。第１懸垂台車１１及び第２懸垂台車１２は、主桁２５の間隔Ｌ３よりも全長Ｌ４が長いレール１３で連結されている。レール１３をカメラ台車７３が走行して、懸垂台車１１，１２の下方を通過する。点検対象の二つの主桁２５の内側面のみならず、主桁２５の外側面も撮影可能になり、カメラ１５や懸垂台車１１，１２の再取り付けが不要になる。【選択図】図１