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矿用挖掘机WK-4B型是开采露天矿、挖掘矿石和土壤的大型单斗挖掘机,它适用于年产量300万～500万t级矿山。4m3挖掘机作为我矿的主要采掘设备之一,其工作和生产效率在很大程度上取决于拖动系统的质量以及电气设备的可靠性。WK-4B型挖掘机的的电气控制是典型的具有挖土特性的F-D控
Mining Excavator Model WK-4B is a large single-bucket excavator that mines open-pit mines and excavated ores and soils. It is suitable for annual output of 3 million to 5 million t class mines. The 4m3 Excavator, one of the major mining equipment in mine, its operation and production efficiency depend largely on the quality of the drive system and the reliability of the electrical equipment. The electrical control of the WK-4B excavator is a typical F-D control with digging