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六十年代以来,随着钢铁、煤炭和有色金属工业的发展,露天矿向大型化迅速发展。为了适应这一要求,国外的几个主要生产矿用挖掘机的公司,都先后研制了一些大型高效率的矿用挖掘机。通过对挖掘机铲斗容积,生产率以及单位容积矿物成本三者关系的研究,如图1可以看出,铲斗容积的大小与生产率成正比,与单位容积矿物成本成反比。目前国外的一些公司通常都在传统结构的基础上,用增大铲斗容量,提高机器可靠性,改进结构使维护修理
Since the 1960s, with the development of iron and steel, coal and non-ferrous metal industries, open-pit mines have been rapidly expanding in size and size. In order to meet this requirement, several major foreign companies producing mining excavators, have developed some large-scale high-efficiency mining excavators. According to the research on the relationship between the bucket bucket capacity, the productivity and the mineral volume per unit volume, as shown in Figure 1, the bucket bucket volume is proportional to the production rate and inversely proportional to the unit volume mineral cost. At present, some foreign companies are usually based on the traditional structure, with increased bucket capacity, improve machine reliability, improve the structure to make maintenance and repair