七十年代以来,全世界大概有几百家工厂制造挖掘机,主要集中在美、苏、西德、日、法等国。品种总数约近600种,年产量约10～15万台,其中液压挖掘机约8.5～13.5万台,总保有量约30～50万台。美国生产挖掘机的历史最久,品种最多,年产挖掘机约2.5～3.0万台,其中相当数量的挖掘机仍为机械传动,以大型、巨型电铲在技术上领先。比较著名的有四大公 Since the 1970s, there are about a hundred factories around the world manufacturing excavators, mainly in the United States, the Soviet Union, West Germany, Japan and France. The total number of varieties is about 600, with an annual output of about 10-1500 units, of which about 8.5-1.55 million hydraulic excavators and a total of about 30-50 million units. The United States has the longest history of excavator production, the largest variety, with an annual output of about 2.5 to 30,000 excavators, of which a considerable number of excavators are still mechanical transmission to large, giant shovel in the technology leader. More famous four big public