小汽车螺旋千斤顶设计概要

毕业设计（论文）（ 2014 届）

题目小汽车用螺旋千斤顶设计

学号 1101090015

姓名沙福君

所属系机械工程学院

专业数控技术

班级 11级数控班

指导教师朱双霞

新余学院教务处制

目录

摘要 (1)

Abstrac t (2)

第一章绪论 (3)

1.1 起重机械的概述 (3)

1.2 目的 (3)

1.3 国内外千斤顶行业发展趋势 (4)

1.4 使用原理 (4)

1.5 使用方法 (4)

1.6主要研究内容 (5)

第二章螺旋传动的设计和计算 (6)

2.1 螺旋传动的类型和应用 (6)

2.2 螺旋传动的运动关系 (6)

2.3 滑动螺旋传动的设计 (7)

2.4 滑动螺旋的结构及材料 (8)

2.4.1 滑动螺旋的结构 (8)

2.4.2螺杆与螺母常用材料 (8)

2.5 耐磨性计算 (8)

2.6 螺母螺纹牙的强度计算 (9)

2.7 螺杆强度校核 (9)

2.8 螺杆稳定性校核 (10)

2.9 自锁性校核 (10)

第三章千斤顶的工作原理和设计 (11)

3.1千斤顶的工作原理 (11)

3.2千斤顶的设计 (11)

3.2.1 选择材料 (11)

3.2.2 耐磨性计算 (11)

3.2.3 计算驱动转矩 (13)

3.2.4 螺杆强度计算 (13)

3.2.5 验证螺杆的稳定性 (13)

3.2.6 校核螺纹牙强度 (13)

3.2.7底座的设计计算 (14)

3.2.8 手柄的设机计算 (14)

3.2.9 托杯的设计计算 (15)

3.2.10 斤顶的效率计算 (16)

3.2.11 千斤顶的其他附加码附件尺寸设定 (16)

第四章零件图和工程图 (17)

4.1千斤顶的各零件尺寸工程图 (17)

4.2 千斤顶的装配图 (18)

第五章基于pro/e仿真 (19)

5.1 仿真的简单介绍 (19)

5.2 基于pro/e的仿真方法 (19)

5.3 整体螺母的绘制 (20)

5.4螺杆的绘制 (21)

5.5底座的绘制 (22)

5.6手柄的绘制 (24)

5.7托杯的绘制 (24)

结论 (27)

致谢 (28)

参考文献 (29)

机械设计在国民经济发展中起着重要作用，机械工业担负着为国民经济部门提供各种性能先进，价格低廉，使用安全可靠，造型美观的技术装备的任务，在国家现代化建设中举足轻重，机械产品的竞争力取决于产品的质量，产品的质量取决于产品的设计。

千斤顶是一种起重高度小（小于1m）的最简单的设备，主要用于矿、交通运输部门作为车辆修理及其它起重、支撑等工作。其结构轻巧坚固、灵活可靠，一人即可携带和操作。千斤顶是用刚性顶举件作为工作装置，通过顶部托座，底部托爪在小行程内顶升重物的轻小起重设备。

本次设计既是产品开发周期中关键的环节，有贯穿于产品开发过的始终，设计决定了产品功能和目标的方案，结构和选材，制造方法以及产品运行，使用和维修方法。设计不合理会导致产品不完善，成本提高或可靠性、安全性不高。产品设计上的缺陷造成的先天不足，难以采取制造和使用措施加以弥补。严重的设计不合理甚至会造成产品设计不出来或不能使用，导致产品设计失败。

现代机械对产品的要求比对传统机械高得多，因而在产品开发和改进过程中，只有全面深入地运用现代设计理论，方法和技术才能满足现代机械产品越来越苛刻的要求，提高其市场竞争能力。

关键词：千斤顶；螺旋传动；机械应用；手驱动；起重机

The machine design develops in the national economy medium have already emphasized to play an important role. The machinery industry carries to provide various performances the forerunner, price moderate for sectors of national economy, use safety dependable, the technique of shape beauty equips of task. Is prominent in the national modernization construction, the competition ability of machinery product is decided by the mass of product, the mass of product is decided by planning of products.

The jack is 1 kind to rise heavy altitude small(BE smaller than a 1 m) the most simple equipment.Mainly used for ore, traffic segment as the vehicle mends and other weigh and underpin etc. operate. Its structure is agile strong and vivid and dependable, one person can immediately take and operate. The jack is to raise piece with the rigid vertex is an operate device, give a mount through a coping, the bottom gives claw the vertex kick weigh a lightly small of thing heavy equipment in the small stroke.

This design since is the link of key in the product development cycle, have already been pierced through to product development super - to call always, the design comes to a decision product function and the scheme of object, structure with choose a material, make the run - time, use and maintenance repairs method of method and product.The design is unsuited to realize to cause product imperfection(of a crystalline solid) , cost exaltation or reliability, stability anti higher -.The inborn that the bug of design of products results in isn't enough, the measure and being hard to adopt production and using takes into to make up.The serious design absurdity even will result in the design of products doesn't come out or the incapability use and cause design of products' failing.

The request anti of modern machinery product is not higher than traditional machinery, as a result in work in process tapping and betterment process, only go deep into an usage modern design theory completely, then method and technique can satisfy a modern machinery product more and more hard request,improve competitive power in its market.

Key words: Jack;Spiral drive; The mechanical applieds;Drives;Crane