挖掘机是一种重要的土方工程机械,广泛应用在房屋建设、道路工程、水利建设,农田开发、港口建设、国防工事等土方施工和矿山采掘作业中,对减轻繁重的体力劳动,保证工程质量,加快建设速度,提高劳动生产率起到巨大的作用。挖掘机其本身由于工况恶劣,且属效率型设备,使用寿命7 000h,较其他工程机械为低,市场更新期快。 Excavator is an important earthworking machinery, widely used in earthwork construction and mining operations such as house construction, road engineering, water conservancy construction, farmland development, port construction, national defense and fortifications, and the like to reduce heavy manual labor and ensure project quality , Speeding up the pace of construction and improving labor productivity play a huge role. Excavator itself due to poor working conditions, and is an efficient type of equipment, the service life of 7 000h, lower than other construction machinery, the market renewal period.