早在本世纪六十年代,澳大利亚就已能生产液压挖掘机。那时市场上的液压挖掘机比较简单,规格尺寸也很有限,且大多数是由齿轮泵提供液压动力的。现在澳大利亚的液压挖掘机是八十年代的产品。下列数据说明,八十年代中期液压挖掘机在澳大利亚的应用大幅度增长,履带式装载机和露天铲运机则相应减少。澳大利亚的设备零售台数 1981 1982 1983 1984 1985 液压挖掘机 496 398 327 739 1006 As early as the 1960s, Australia had been able to produce hydraulic excavators. At that time the hydraulic excavator on the market was relatively simple, the size of the gauge was also very limited, and most of them were hydraulically powered by gear pumps. Now Australia’s hydraulic excavator is the product of the eighties. The following data show that in the mid-1980s hydraulic excavator applications in Australia increased significantly, while the track loader and open-cut scraper is reduced accordingly. Equipment retail units in Australia 1981 1982 1983 1984 1985 Hydraulic excavators 496 398 327 739 1006