液压升降台整套毕业设计[带全套cad图].rar

液压升降台整套毕业设计[带全套CAD图]







毕业论文标准WORD格式排版 36页 附机械总装图.dwg 轴耳.dwg 油箱.dwg 液压原理图.dwg 下板.dwg 外连杆.dwg 上板架.dwg 内连杆.dwg 焊接件.dwg 固定铰接处.dwg 阀体.dwg 阀块.dwg 泵站图.dwg















摘 要







本次毕业设计对象是液压升降平台，这套装置主要用于举升重物。它的举升高度为1米，举升重量为1吨，其动作主要是由两个双作用液压缸推动“X”型架，带动上板来实现的。该液压升降平台主要由两个部分组成：机械部分和液压部分，其中机械部分主要由上板架、下板架、内连杆和外连杆四部分组成。本设计设计、选择了机械部分材料与结构，并对其进行受理分析与校核，以便检验是否满足强度、刚度的要求，分析及校核的结果证明机械结构的设计可以满足要求。在对液压控制系统的设计过程中，先进行了总体方案设计。在选择液压的各个控制回路的时候，在对各个回路进行了对比后调速回路我选择了进油口节流调速回路；卸荷回路我选择了带有二位二通电磁换向阀的卸荷回路；保压回路我选择的是用液控单向阀的保压回路。确定了各种基本回路后，又确定了液压系统的传动形式，由于开式系统所具有的系统简单和散热条件好等优点，所以把传动系统确定为开式系统。在拟定液压系统原理图后，对液压元件及辅件进行了设计、选择，并对其进行校核。经过计算后液压缸选定为45毫米的液压缸，液压泵选定为齿轮泵，根据系统工作的最大功率我选择的电动机为Y112M-4行三相异步电动机。在确定泵后，又对其他的元件及辅件进行了合理的选择，最后确定各种元件后,进一步完成了我的设计题目。















关键词: 液压；升降平台；上板架；下板架；内连杆；外连杆















Abstract







I graduated from the current design is done mainly hydraulic lifts, mainly divided into two parts: mechanical and hydraulic parts. Mechanical parts which I think the main needs to be considered is the subject of several major part of the intensity: on board planes, under the board planes, within and outside link connecting rod. In this part of my four were on board from top to bottom-line Analysis of the internal and external linkage, I had the strength check. After my analysis and after checking I think I can satisfy the design requirements. Then I entered the various parts of the hydraulic choice. In the choice of the hydraulic control circuit all the time, in the loop on a comparison of the governor after I selected the import speed loop circuit; unloading loop I chose the valve of the unloading circuit; packing circuit I have chosen The use of one-way valve controlling the packing circuit. In determining the needs of the various circuit I, I'm sure I wear the hydraulic system of fixed form, according to open-system and the system simple cooling system features good condition, I set my drive system for open - System. On the other hydraulic components accessories choice, I had to them after the calculation of the hydraulic cylinders after I voted 45 mm of hydraulic cylinders, according to the transmission gear pump stability, I take my pump as a gear Pump, according to my system the maximum power of the work I elected to the motor Y112M-4 to three-phase asynchronous motor. I set the pump, I also based on this I need the yuan other accessories for a reasonable Choose, finally, I identified a variety of components, further complete the design of the topics I.















Keywords：Mechanical;Hydraulic; Panels from top to bottom;Inside and outside link















目录







摘 要 I







Abstract II







第1章 绪论 1







第2章 确定液压系统方案 2







2.1确定基本回路 2







2.1.1卸荷回路 2







2.1.2 调速回路的确定 4







2.1.3保压回路的确定 7







2.2 液压传动系统的形式确定 9







2．3 液压系统原理图 10







第3章 设计、选择液压元件、辅件 11







3.1确定液压缸系数 11







3.1.1 初选系统压力 11







3.2 液压辅助元件的计算及选择 12







3.3油箱的设计 12







3.3.1油箱的设计要点 13







3.3.2油箱容积计算 13







3.4 其它元、辅件的选择 13







3.4.1.吸油滤油器 13







3.4.2选择滤油器的基本要求 14







3.4.3溢流阀的选择 14







3.4.4压力表开关选择 14







3.4.5单向节流阀 15







3.4.6液控单向阀的选择 15







3.5阀块的设计 15







3.6 效率的计算 16







3.6.1计算沿程压力损失 16







3.6.2效率..