Importance

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Abstract

A process for monitoring load conditions on a lifting machine having a rated load moment includes determining an actual load moment of the lifting machine due a weighted load. The actual load moment may be determined by measuring a tilt pressure within a hydraulic tilt cylinder of the lifting machine, and then calculating the actual load moment from the tilt pressure within the hydraulic tilt cylinder. The location of a center of gravity of the weighted load is also determined by measuring a lift pressure within a hydraulic lift cylinder of the lifting machine, and then calculating the weight of the weighted load from the lift pressure. Once the weight is determined, the location of the center of gravity of the weighted load may be found using the actual load moment and the calculated weight. Information about the weight and the location of the center of gravity of the weighted load may be also provided to a user as well as warnings if the operating parameters of the lifting machine are in danger of being exceeded or actually exceeded. If a load pressure switch of the lifting machine is activated, at the very least, the lifting function of the machine will be disabled.

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First Claim