FIELD: mechanical engineering; boom cranes.
SUBSTANCE: invention can be used in control, protection and monitoring systems of load-lifting machines, mainly, boom cranes. Diagnosing of safeguard is carried out by comparing output signals of parameters of load-lifting machine. Faults are revealed basing on results of comparing. Comparing is done by revealing combination of values and/or speeds and/or signs of speeds of change of output signals from different parameter pickups of load-lifting machine not encountered in process of operation of machine when safeguard is in good repair. If such combination is revealed, fault signal is generated. Simultaneously output signals of analog and discrete pickups of parameters of load-lifting machine characterizing its load, geometry, modes and conditions of operation are analyzed and contradictions in output signals of safeguard pickups and signals from actuators are looked for.
EFFECT: improved safety of load-lifting machine in operation, reduced down time, simplified and enlarged operating capabilities of safeguard.
24 cl, 2 dwg
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