液压升降台毕业设计图纸.docx
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1、液压升降台毕业设计图纸 液压升降台毕业设计图纸 篇一:液压升降台设计 学校代码:10410 序号:055020 本科毕业设计 题目: 学院:工学院 姓名:王焕云 学号: XX5020 专业:机械设计制造及其自动化 年级: XX 指导教师:龚水泉 二OO九年五月 江西农业大学毕业设计(论文)任务书 摘要 本次设计任务是液压升降台,它是一种升降稳定性好,适用范围广的货物举升设备。其起升高度800mm,举升重量3T,幅面尺寸26001400 mm.其动作主要是由两个双作用液压缸推动“X”型架,带动上板移动来实现的。该液压升降台主要由两部分组成:液压部分和机械部分。设计液压部分时,先确定了液压系统方案
2、。选择液压基本控制回路时,换向回路选择三位四通电磁换向阀;平衡回路选择用液控单向 阀。确定各种基本回路后,又确定了液压系统传动形式,拟定液压系统原理图,然后对液压元辅件进行了设计、选择,并对其进行校核。经过计算后液压缸直径选定为70毫米,液压泵选叶片泵。根据系统工作的最大功率选Y90S-4三相异步电动机。在确定泵后,又对其他的元辅件进行了合理的选择,最后确定阀块的设计及效率计算。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。通过设计、选择机械部分材料与结构,并对其进行受力分析与强度校核,结果证明机械部分结构设计可以满足要求,进一步完成了本次设计题目。 关键词:液压;升降平台;上板架;
3、下板架;内连杆;外连杆 hydraulic lift platform Abstract:The task of this design is hydraulic lift platform, it is an carpo lifting equipment with good stablity of taking off and landing. Its lifting height is 800mm, weight lifting is three tons, and frame size is 2600 1400 mm. Its action is mainly composed of
4、two pairs of hydraulic cylinders to promote the X aircraft, leding to realize the mobile plate.The hydraulic lifting platform is mainly composed of two parts : hydraulic parts and mechanical parts. In the design of the hydraulic parts, I first made sure the hydraulic system. In the process of select
5、ing the basic of hydraulic control loop , the direction loop I chosen to use three position four-way electromagnetic valve,and the balance loop I chosen to use pilot-controlled check value. After the identification of the basic loop, I also made sure the form of hydraulic transmission system, the de
6、velopment of the hydraulic system schematic diagram, and then I designed,selected the hydraulic components and accessories, and checked them. After calculating I selected two 70 mm hydraulic cylinder, I selected the vane pump as the hydraulic pump. According to the maximum power of this system I cho
7、sen Y90S-4 three-phase asynchronous motor. After determining the pump, I also chosen the other components and accessories reasonly and finaly I designed the valve block and calculated the efficiency. The mechanical parts is mainly composed of inside and outside link and On board aircraft, the next b
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