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195－B1型挖掘机，斗容7．6m3是美国BE公司设计并与我国衡阳有色冶金机械总厂合作生产的大型铲装设备。该机从整体来讲，设计先进、结构合理、操作灵活及生产效率高。但通过生产实践，我们发现个别关键部位的零部件在设计上也不尽合理，导致故障频发。为了充分发挥该机的效能，
195-B1 excavator, bucket capacity 7.6m3 BE company designed by the United States and China Hengyang Nonferrous Metallurgy Machinery Plant co-production of large shovel equipment. The aircraft as a whole, advanced design, reasonable structure, flexible operation and high production efficiency. However, through the practice of production, we found that the design of some key parts of parts is not reasonable, leading to frequent failures. In order to give full play to the performance of the aircraft,