| 摘要 |
PROBLEM TO BE SOLVED: To improve the alarming accuracy of an overturn alarming device by detecting the low load of an outrigger with high accuracy. SOLUTION: This crane overturn alarming device comprises a load cell 1 which comprises a coil spring 5 having a strain gage 4, and an upper load cell case 6 and a lower load cell case 7 which holds the coil spring 5 from the top and the bottom thereof to transmit the load of the outrigger to the coil spring 5, and is provided with support parts 8, 9 to support the load exceeding a predetermined value to restrict the deflection of the coil spring 5 between the upper load cell case 6 and the lower load cell case 7, and an alarm unit to give the overturn alarm based on the detected load of the outrigger from the load cell 1. |
