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NEXCO総研

Development of high-speed cleaner using cavitation jet

 
Currently, traffic lane restrictions are necessary when cleaning road tunnel light fixtures as the operating speed of cleaner vehicles is slow (1 - 2km/h), and may cause traffic jams that may lead to accidents. But traffic lane restrictions have been cut down by applying cavitation jet technology which makes it possible to clean road tunnel light fixtures at a higher speed and effectively without detergent.
 
     
 
・This apparatus moves and cleans at a speed of 50km/h, which is the lowest speed allowed on expressways.
・Vehicles near the apparatus are not affected as cavitation jet involves only a small amount of water and almost all of it dissipates as vapor.
・Cavitation jet uses no detergents or any other substances that could pollute the environment and is environmentally friendly.
 
     
 
GPS-linked automatic nozzle position control device adjusts nozzle to cleaning position before vehicle enters tunnel.