螺旋千斤顶梯形螺纹设计任务书.pdf

螺旋千斤顶 设计计算说明书 院 系 工程学院 专业年级 2012 级车辆工程 设 计 者 张丰硕 指导教师 李老师 成 绩 2014 年11 月2 日 螺旋千斤顶 设计计算说明书 螺旋千斤顶设计任务书 学生姓名 张丰硕 专业年级 2012 级车辆工程 设计题目： 设计螺旋千斤顶 设计条件： 1、最大起重量FQ 55kN ； 2 、最大升距h 220mm 。 设计工作量： 1、绘制出总装配图一张，标注有关尺寸，填写标题栏及零件明细表； 2 ( 、编写设计计算说明书一份 包括目录、设计任务书、计算内容和设计步骤、参考资 ) 料 。 指导教师签名： 年 月 日 1 螺旋千斤顶 设计计算说明书 目录 1 螺杆的设计与计算·················································3 1.1 螺杆螺纹类型择 ·············································3 1.2 选取螺杆材料················································3 1.3 确定螺杆直径················································3 1.4 自锁验算 ···················································4 1.5 结构设计 ···················································4 1.6 螺杆强度计算 ···············································5 1.7 稳定性计算··················································6 2 螺母的设计与计算 ················································7 2.1 选取螺母材料 ···············································7 2.2 确定螺母高度H及螺纹工作圈数u ······························7  2.3 校核螺纹牙强度 ·············································7 2.4 螺母与底座孔配合 ············································8 3 托杯的设计与计算·················································9 3.1 托杯材料的选择 ·············································9 3.2 结构设计 ···················································9 3.3 接触面强度校核 ·············································9 4 手柄的设计与计算·················································10 4.1 手柄材料选择················································10 4.2 手柄长