| 摘要 |
PROBLEM TO BE SOLVED: To control a plurality of cranes so as to prevent an interference such as a collision in a cargo device in which the cranes run on a same rail or vertically congested rails. SOLUTION: Distance data to an adjacent crane 1 measured by a range finder 11 included in each crane 1 and operation information of the adjacent crane 1 are taken into a control device 10 of each crane 1, priority with the adjacent crane is determined by a decision table, an operation such as movement, evacuation, or stop of the crane is autonomously controlled, and a collision between the cranes is autonomously avoided. A moving speed of the crane 1 based on a rotation speed of a motor 3 for driving the crane 1 and speed data is taken, thereby allowing more accurate control. The device can be applied to a prefetch priority method by transmitting the operation information between the cranes.
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