起重机液压系统毕业设计

h the vehicle, the amplitude must boards the hydraulic system, computation choice appropriate pumping, hydraulic pressure part and so on cylinder and valve Among them, thought especially the arm design is most important, regarding this I with emphasis considered.РKeywords With the vehicle hoist crane Expands and contracts the arm Hydraulic pressure part ShapingР目录Р1绪论?1Р1.1概述?1Р1.2随车起重机主要分类?1Р1.3选用随车起重机注意事项?1Р1.3.1随车起重机的起重工况?1Р1.3.2随车起重机的配置?1Р1.4国内外随车起重机的发展?2Р1.4.1国外随车起重机的发展现状?3Р1.4.2国内随车起重机发展现状?5Р1.4.3随车起重机的发展趋势?6Р2 随车起重机的性能参数?11Р2.1 性能参数?11Р2.2计算载荷与设计方法?12Р3 臂的设计?14Р3.1各臂长的计算?14Р3.2吊臂截面的选择?15Р3.2.1基本臂的设计?22Р3.2.2第二节臂的设计?23Р3.2.3第三节臂的设计?25Р3.3耳板及轴销的设计?27Р3.3.1耳板校核?27Р3.3.2立柱与基本臂铰接处轴的校核?28Р4 液压系统的设计?29Р4.1变幅油缸的设计?29Р4.2泵的选择?30Р4.3箱型吊臂伸缩机构?31Р结论?32Р致谢?33Р参考文献?34Р附录?35Р附录1?35Р英文原文?35Р中文翻译?46