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在一些露天矿的挖掘工作面,液压挖掘机正在向大型化方向发展,且在愈益增多的应用场地向钢绳电铲挑战。挖掘机的重量业已增大,市场上某些更新的液压铲的工作重量已达40万磅(1磅=0.4536kg)和更大。德马格公司的H458是一种超级液压挖掘机,其总工作重量达
In some of the opencast mining facets, hydraulic excavators are evolving to larger sizes and challenge steel cable shovels in an ever-increasing number of applications. Excavators have grown in weight and some of the newer hydraulic shovels on the market have a working weight of 400,000 pounds (1 pound = 0.4536kg) and more. Demag’s H458 is a super hydraulic excavator with a total working weight of up to