机械毕业设计

目   录
第一部分：系统开发建议书·························．共5页
第二部分：WZ45．40装载工作装置设计··············共40页
摘要：
第一章：整机概述········································1
第一节：绪论············································1
第二节：国内外发展现状···································2
第三节：挖掘装载机发展特点·······························5
第二章：铲斗设计······································．7
第三章：挖掘装载机工作装置结构设计·····················．10
一、确定动臂长度、形状与车架的铰接位置················11
二、连杆机构设计·······································．15
三、转斗油缸与摇臂的铰接点以及下拉杆与机架铰接点的确定”················································16
四、举升油缸与动臂和机架的铰接点·······················17
五、铲斗举升平动分析及最大卸载高度、最小卸载距离的确定·················································l 8
第四章：工作装置的受力分析···························．21
第五章：工作装置的运动仿真····························32
第六章：工艺分析·····································．33
第七章：工作装置的限位机构·····························．35
第八章：设计心得及实习体会····························．37
第九章：附录···········································．38
第三部分：翻译材料····································13页