械网钢铁挖掘机培训教材目录主要内容...............................................................................................................................3§1概述.........................................................................................................................................4§1-1挖掘机概述....................................................................................................................4§1-2挖掘机简史....................................................................................................................4§1-3挖掘机之最....................................................................................................................5§1-4挖掘机分类....................................................................................................................5§1-4挖掘机按机重分类..........................................................................................................7§2基本结构和特点.........................................................................................................................7§2-1履带式挖掘机基本结构....................................................................................................8§2-2液压挖掘机工作原理.....................................................................................................10§2-3液压挖掘机工作特点.....................................................................................................10§2-4相关知识.....................................................................................................................11§3挖掘机的主要参数...................................................................................................................12§3-1操作重量.....................................................................................................................12§3-2发动机功率?.................................................................................................................13§3-3斗容....................................................................................................
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