SYSTEM OF VIBRATION-DAMPING CONTROL FOR CRANE AND METHOD OF VIBRATION-DAMPING CONTROL FOR CRANE

摘要

The present invention is a system of vibration-damping control for a crane, which reduces the vibration of a support structure (20) during shaking of a crane (10) provided with a trolley (24) that moves over a girder (22) and boom (23) provided to a top side of the support structure, wherein the system is provided with: a vibration detection sensor (30) for detecting vibration; a trolley drive unit for driving during movement over the girder (22) and boom (23); a calculation unit for calculating a vibration speed of the support structure on the basis of a detection signal of the vibration detection sensor (30); a determination unit for determining, from a calculation signal of the calculation unit, whether vibration-damping control of the support structure (20) is necessary; and a command signal transmission unit for transmitting to the trolley drive unit a command signal for adjusting the moving speed of the trolley (24) when the determination unit has determined that vibration-damping control is necessary. The present invention thereby makes it possible to facilitate vibration-damping retrofitting and enable the shaking caused by strong winds or earthquakes of a wide range of frequencies and magnitudes to be dealt with.