The invention provides a moment limiter used for a crawling crane and a control method thereof. A rectangle composed of the outermost peripheries of two track shoes of the crawling crane serves as a carrying plane, a movable counterweight is placed on a counter weight slide rail of a crane main body, the movable counterweight is connected with the crane main body through a counterweight oil cylinder, the moment limiter comprises a pressure monitoring unit, an oil cylinder displacement sensor, an angle sensor, a lifting performance meter calculating module, a load calculating module and a comparison module at the minimum, the pressure monitoring unit is connected with the input end of the lifting performance meter calculating module and the input end of the load calculating module, and the input end of the lifting performance meter calculating module is connected with the oil cylinder displacement sensor at the same time; the input end of the load calculating module is connected with the angle sensor at the same time; the output end of the lifting performance meter calculating module and the output end of the load calculating module are connected with the input end of the comparison alarm module. The moment limiter cooperates with a gravity center control system of the crane to be use, a function of calculating a lifting performance meter in real time is achieved, the crane is made to be intelligentized, and the safety is increased.
Moment limiter used for crawling crane and control method thereof
2015-10-07
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
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