毕业论文--汽车典型液压系统设计—起重机液压系统_精品.doc

毕业论文--汽车典型液压系统设计—起重机液压系统 摘 要在我国车载起重机的发展已有五十年的历史了由于受到客观条件的限制一度发展较慢进入九十年代发展迅速但与国际先进水平还相差很远主要表现在产品质量的稳定性自动化智能化等方面随着国家基础建设的规模不断加大许多生产场合都需要对设备产品零件货物等进行搬运和位移车载起重机在起重运输行业和野外作业发挥的作用也将越来越大市场也将越来越大 汽车起重机液压系统的设计是该型起重机设计过程中最关键的一步本文首先对汽车起重机总体进行初步设计根据要求初步选择部分参数然后再根据液压系统的技术指标对该系统进行整体方案设计对其功能和工作原理作进一步的比较分析确定了系统各回路的基本功能结构及主要元件设计的汽车起重机能够满足使用功能要求安全可靠结构合理重量轻操作使用方便对许多生产场合与起重运输等行业具有很强的现实意义关键词车载起重机液压系统工作原理基本功能Automotive Typical Hydraulic System Design Crane Hydraulic SystemAbstractThe development of the vehicle-mounted crane has more than 50 years history in our country Limited by the external condition the vehicle-mounted crane developed slowly for a time Since 1990s it has developed rapidly But it still could not reach the international advanced level which was mainly reflected by the quality stability automation and intelligent of product With the countrys infrastructure construction expanded in size some equipment products components and goods need to be moved and shifted in many production occasions The vehicle-mounted plays a more and more important role in lifting transportation industry and the field operation And its market will be growing too The design of the vehicle-mounted transmission crane is the key in the process of designing the hoist of this type in this article first carry on preliminary design to the overall hoist and choose some parameter according to the requirements Second carry on the overall plan design according to hydraulic systems technical specification Third compare its function with its operation principle and confirm the basic structure and main components of every loop of the system tentatively Then carry on selective calculation of the components according to organization performance parameters and performance parameters of hydraulic transmission system through the computations and generating heat of the systematic function the request of this hoist can be reachedThe vehicle-mounted crane that is designed can satisfy use requ