TARGET POSITION INPUT METHOD AT AUTOMATIC OPERATION OF CABLE CRANE

PROBLEM TO BE SOLVED: To reliably input a target position to an automatic operation control part by arranging a GPS mobile receiver in the target position and a GPS fixed receiver in a previously found three-dimensional position, performing operation processing on these position data, and designating the target position found from relative position data of a position of the fixed receiver and the mobile receiver on the driving side. SOLUTION: When an operator pushes a measuring button 53 by standing in a driving target position M by holding an antenna 52, its contact point signal is discriminated by a driving side position measuring device 54, and a GPS mobile receiver 51 receives the signal. This position data is wirelessly inputted to a position measuring operation processing part. On the other hand, position data received by a GPS fixed receiver 58 arranged in a previously found three-dimensional position is inputted to the position measuring operation processing part, and an operation is performed on three-dimensional coordinate values of the target position M by releative position data on respective installing position coordinates of the fixed receiver 58 and the antenna 52, and it is inputted to an automatic operation control part of a crane, and a target position of a bucket is designated on the driving side, and can be automatically and reliably inputted to the automatic operation control part.