Patent ID: 6785597
Filing Date: 2004-08-31
Classification: B66F

Abstract:
A process for monitoring load conditions on a lifting machine having a rated load moment, comprising the steps of:determining an actual load moment of the lifting machine due a weighted load, the determining step including the steps of: measuring a tilt pressure within a hydraulic tilt cylinder of the lifting machine, and calculating the actual load moment from the tilt pressure within the hydraulic tilt cylinder, and measuring a lift pressure within a hydraulic lift cylinder of the lifting machine, calculating the weight of the weighted load from the lift pressure, and calculating a location of the center of gravity of the weighted load using the actual load moment and the calculated weight; activating a first warning if the actual load moment is below a first predetermined load moment; activating a second warning if the actual load moment is above the firs t predetermined load moment and below a second predetermined load moment; and activating a third warning if the actual load moment is above the second predetermined load moment.