1目录TU内容提要UT·············································································································ⅠTUSummaryUT···············································································································ⅡTU绪论UT...............................................................................................................1TU1.1前言UT.......................................................................................................1TU1.2课题设计要求UT.........................................................................................2TU2国内外研究现状及发展动态UT....................................................................3TU2.1国外研究状况及发展动态UT....................................................................3TU2.2国内研究情况及发展动态UT....................................................................4TU3液压系统的设计UT........................................................................................5TU3.1液压挖掘机的工况分析UT........................................................................5TU3.2液压系统的主要参数确定UT....................................................................8TU3.3负载分析UT..............................................................................................10TU3.4机电一体化液压挖掘机工作原理UT.......................................................12TU3.5机电一体化液压挖掘机工作技术要求UT...............................................13TU3.6液压缸主要几何尺寸的计算UT..............................................................14TU3.7液压缸结构参数的计算UT......................................................................15TU4液压系统原理图的制定UT..........................................................................19TU4.1制定基本方案UT......................................................................................19TU4.2确定回路方式UT......................................................................................20TU4.3选用液压油液UT......................................................................................20TU4.4绘制液压系统原理图UT.