| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently carry out safety control by grasping a load state, a driving state, etc., at the time of working by a third party. SOLUTION: An inside memory part 2 is provided on a crane A, load information to be input from an excess load prevention device 1 is memorized by this inside memory part 2, this memorized information is sent to a data control part 7 of a control center B through transceiver devices 3, 6 and a base station C, and it is recorded and displayed. Additionally, it is devised to send a safety control signal toward the crane side from a command part 9 in accordance with the load state.
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