DETECTION OF POSITION FOR TRACKLESS TYPE CRANE

摘要

PURPOSE:To detect positions with simple work by providing optical reflectors which display position information on the surfaces of traveling roads for a trackless type crane and reading the position information of the light reflectors with an on-vehicle device provided to the crane. CONSTITUTION:Ground devices 5 are installed in necessary places of traveling roads for a trackless type crane. The devices 5 have 10 pieces of projecting parts 12 and 9 pieces of recesses 131-139, and all the parts 12 are coated with black paint. Some of the recesses 131-139 are coated with black paint and some are adhered with reflection tapes to indicate position information. Optical transmitters and receivers 101-109 which detect the devices 5 and hoods 111- 119 are provided to an on-vehicle device 7 of the trackless type crane to detect the position of said crane.