Electro-hydraulic automatic control device of grab bucket type crawler crane

• Main Authors: LI LIMIN, REN WEITAO, ZHANG CHENG, ZHOU YAXIANG, GUO XUDONG, LIU CHUNPENG, ZHANG YUAN, ZHANG TIEHENG, ZHOU GUOYUN, BAI LINYING
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: CRANES; HAULING; HOISTING; LIFTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; PERFORMING OPERATIONS; TRANSPORTING

The utility model discloses an electro-hydraulic automatic control device of a grab bucket type crawler crane. The hydraulic control system comprises a plunger pump set, a pilot gear pump, an electromagnetic valve set for controlling a main winch clutch, a caliper disc proportional pressure reducing valve set for controlling a main winch caliper disc brake, a hydraulic control reversing valve forcontrolling a main winch speed reducer brake, a main winch lifting control part and a control module. The automatic lifting and lowering functions of the main winch of the grab bucket crane meet the automatic control of the crane under the grab bucket working condition, the process does not need manual operation at all, and the labor intensity of workers is relieved. Meanwhile, when the main winchof the crane needs to work for a long time, an operator only needs to observe the working state of the crane and does not need to get on the crane for operation, the grab crane can efficiently work for a long time, manual mis