WK-20型电动挖掘机是包钢(集团)公司白云鄂博铁矿2007年11月投入生产运行的新型挖掘机,该挖掘机是白云铁矿斗容量最大、电控性能较先进的挖掘设备,在该矿属首台使用,其开斗机构的正常使用直接影响着挖掘机的生产效率。开斗机构是保证挖掘机在采装时关闭斗门,在卸载时开启斗门。但在实际使用中,WK-20型电动挖掘机的开斗机构存在一定的缺陷,并不能保证正常工作,严重影响 WK-20 electric excavator is Baotou Iron & Steel (Group) Company Bayan Obo Iron ore put into operation in November 2007 a new type of excavator, the excavator is the largest capacity Baotou Iron Mine bucket, more advanced electrical control performance of mining equipment, In the mine is the first use, the normal use of the fighting agencies directly affect the excavator’s production efficiency. Bucket fighting mechanism is to ensure that the excavator in the dressing closed Doumen, open the Doumen unloading door. However, in actual use, WK-20 electric excavator fighting mechanism there are some flaws, and can not guarantee the normal work, seriously affected