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qiao shi zhua dou qi zhong ji zi dong hua xi tong de she ji
Pages: 25-27
Year: Issue:  11
Journal: Haisting and Conveying Machinery

Keyword:  bridge-type grab cranedragcontrolautomatic;
Abstract: In view of deficiencies of traditional grab cranes in electric dragging and electric control,a PLC control system is designed to replace the control circuit composed of the relay and the contact,which can provide tensile forces such as rope lifting,opening,and closing using the “droop control”function of the converter,hence to improve the work-ing efficiency,optimize controllability of the grab,and reduce the equipment fault rate.
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