On the 2nd, the reporter learned from Nanjing University of Science and Technology that Wang Qianshu, a junior student of the School of Computer Science and Technology of Nanjing University of Science and Technology, and three others participated in the development of the "bridge detection wall-climbing robot" for accurate pulse detection of bridges. .
This is an "ugly" guy with a length and width of about 20 centimeters, weighing less than 1.5 kilograms. It carried a pair of long "big tentacles", dragged four wheels, and slowly crawled on the tower of the second bridge cable at a speed of 8 meters per minute through wireless control equipment, and even came mischievously. After a 180-degree flip, you will simply drill into the bridge piers and continue to inspect slowly and carefully in areas that this person cannot touch.
This easy-to-see process is not simple. The “big tentacles†have already taken pictures or videos of the traveling process, and the technicians have monitored the bridges, the cables of the bridges, and even the bridge piers that are not easily accessible through ground monitoring equipment. No cracks, damage, aging, scratches, corrosion and other phenomena are all clear at a glance. After it is finished, a clear and accurate image data is instantly transmitted to the instrument in the hands of the technician. The small cracks as small as 0.5mm on the surface can be accurately captured, and the exact location is marked and provided to the bridge maintenance department. .
Associate Professor Liu Yong of the School of Computer Science and Technology of Nanjing University of Science and Technology is the instructor of the bridge wall-climbing robot. He introduced that in China, the safety of bridges is increasingly valued. Bridges often suffer from damages such as damage, cracks, and aging caused by some institutional changes. The traditional inspection of these appearance diseases has traditionally used manual methods. This not only takes time and effort, but also increases the personal safety hazards of the inspectors. It is even more difficult to check the appearance of the high tower of the cable-stayed or suspension bridge and the appearance of the high pier columns. Taking the inspection of bridge supports as an example, the distance between the bottom of the beam and the cap of the pier and abutment is small, people often cannot reach it and cannot provide an all-round inspection. With this small robot, you can flexibly enter a small space and carefully observe the condition of the support. Such inspection not only improves the work efficiency by dozens of times, greatly saves testing time and costs, reduces the time for road closures, but also greatly reduces the safety risks. The information stored on the bridge site with video or photos can be used as the original basis for historical data and expert analysis. This can avoid more "bridge brittle" incidents to a certain extent.
Liu Yong said, not to mention its small size, but it has a lot of functions. It has four subsystems: a sealed adsorption device, a mobile mechanism, communication control and disease detection. Among them, the sealing adsorption is the key technology. Through the command sent by the ground remote control device, the centrifugal pump body in the little guy rotates at a high speed to discharge the gas in the sealed cavity. After the outside atmospheric pressure is stronger than the pressure in the sealed cavity, it can be tightly pressed against the bridge Wall surface. Its "big tentacles" are the disease detection system, allowing it to constantly look for any potentially dangerous places on the bridge, and transmit the detection images to the ground through the wireless network, providing the staff with first-hand information.
It is understood that this project is also part of the development of a viaduct wall defect detection robot jointly developed by the South Polytechnic University and the Ninghu Expressway Company under the funding of the Jiangsu Key Science and Technology Support Program.
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