| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a brake device that can be attached to an existing crane device and has its brake control independent of the existing crane device.SOLUTION: A brake device is attached to an existing travel crane moving along a rail, the brake device having a speed measurement part that obtains a speed of the travel crane relative to the rail, and a brake part that brakes the travel crane in the rail on the basis of the speed obtained by the speed measurement part.</p> |
