文档介绍：家用升降梯设计姓名: 谷明超、田银然学号: Z12035520 、 Z12035519 专业: 焊接技术及自动化年级: Z120355 指导教师: 郭玉波 2014 年4月家用升降梯设计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 2600 ×1400 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。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;下板架;内连杆;外连杆 hydraulic lift platform Abstract: The task of this design is hydraulic lift platform, it isan carpo lifting equipment with good stablity of taking off and landing. Its lifting height is 800mm, weight lifting is three tons, and frame size is2600 ×1400 mm. Its action is posed of two pairs of hydraulic cylinders to promote the "X" aircraft, led ing to realize the mobile hydraulic lifting platform is posed of two parts : hydraulic parts and mechanical parts . In the design of the hydraulic part s,I first ma de sure the hydraulic system . In the process of selecting the basic of hydraulic control loop , the direction loop I chose n to use three position four-way ic valve ,and the balance loop I chose n to use pilot-controlled check value . After the i dentification of the basic loop ,I also made sure the form of hydraulic transmission system, the development of the hydraulic system schematic diagram, and then I designed,selected the ponents and accessories, and checked them. After calculating I selected two 70 mm hydraulic cylinder, I selected the vane pump as the hydraulic pump .ord ing to the maximum power of this system I chose n Y90S-4 three-phase asynchronous motor. After determining the pump ,I also chosen the ponents and accessories reason ly and finaly I designed the valve block and calculated the efficiency. The m echanical parts is posed of inside and outside link and On board aircraft, the next bo