高空作业车抬升液压支架设计.doc

摘要 本设计主要以小型折叠式高空作业车上、下臂结构为研究对象，对上、下臂进行结构和该车上的液压系统进行设计。主要分两部分进行阐述，第一部分：根据高空作业车的最大作业高度10米，在满足作业高度的前提下，进行高空作业臂的结构设计：首先根据工作载荷使用要求选择作业臂材料的类型；其次根据最大作业高度确定上、下臂的长度；再经过受力分析利用强度来确定臂的截面尺寸及油缸的铰接位置；进而校核强度、刚度、稳定性，查看作业臂的尺寸是否符合要求。对施加均布载荷和约束，进行结构的强度和刚度分析，确定危险截面或危险点的应力分布及变形。最后画出作业臂总装图及上、下臂零件图。第二部分：液压控制部分主要是指控制上下臂变幅运动的液压缸。文中详细记录了高空作业机构上臂液压缸和下臂液压缸的设计过程。在确定液压系统元件参数的基础上，完成了液压传动系统的设计计算，并作出液压系图。 关键词 高空作业车；结构设计；液压传动系统设计；液压缸 Abstract In this paper, to high-altitude vehicles, under the arm to study the structure of the upper and lower arm to the vehicle structure and the design of the hydraulic system. Mainly conducted in two parts on, high-altitude vehicles under one of the largest 10 meters high degree of operating, to meet the high degree of operating under the premise of a high-altitude operations arm of the structural design: First, the use of operating arm asked to choose the type of material and secondly in accordance with the largest Operating highly determined, under the arm length; another use of force analysis to determine the strength of the arm section size and location of the fuel tank of the hinged; further strength, stiffness, the stability of checking to see whether the size of the operating arm to meet the requirements . To impose uniform loading and constraints, structural strength and stiffness analysis, risk or danger point cross-section of the stress and deformation. Finally draw operating arm and hand, arm parts under the plans. And hydraulic control of the mainly refers to control the movement from top to bottom arm Change hydraulic cylinders. In a detailed record of the agencies operating at high altitude upper arm hydraulic cylinders and hydraulic cylinders under the arm of the design process. In determining the parameters of the hydraulic system components, based on the completion of the hydraulic system design and calculation. Key words high-altitude vehicles structural design hydraulic system design hydraulic cylinders