Equipment for measuring crane lifting load based on electric power

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the load of hoisting with a crane by a power value which uses an inexpensive electric load meter and reduces a measurement time to increase the initial safety or operability of hoisting activation.SOLUTION: A first power measurement is made when a rate is low immediately after hoisting activation, a first load conversion is performed based on the measured power value, a second power measurement is made when a rate becomes higher, and a second load conversion is performed based on the measured power value.SELECTED DRAWING: Figure 2