A grappler overload protection system uses a load-measuring device to provide a first load indication for preventing the grappler from bearing an unsafe load when the first load indication exceeds a first limit. A grappler overload protection method determines a spread of grappler arms based on information from a first sensor, determines an expected weight of the load based on the spread of the grappler arms, and compares the expected weight to a first limit for preventing the grappler from bearing an unsafe load. The method may optionally determine an angle of a boom supporting the grappler for determining an expected torque on the boom based on the boom angle and the expected weight of the load. The method may take preventative measures to prevent the grappler from bearing the load when the expected weight exceeds the first limit or when the expected torque exceeds a second limit.
Grappler overload protection
2017-09-05
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
IuD Bahn | 1994
|NTRS | 1979
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