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电动式螺旋千斤顶的设计 目录 摘要1 Abstract 2 第一章、序言4 1.1本课题研究的意义4 1.2国内外千斤顶技术的发展现状7 1.2.1国外发展情况8 1.2.2国内发展情况8 1.3本课题的主要研究任务9 第二章、电动千斤顶的概念设计10 2.1概述10 2.2典型汽车用千斤顶特点比较10 2.3新型千斤顶的设计方案确定和论证11 2.4本章小结12 第三章：电动千斤顶关键部件的详细设计14 3.1电动千斤顶的主要设计参数14 3.1.1电动千斤顶的主要设计技术指标14 3.1.2电动千斤顶的主要使用条件14 3.2电动千斤顶运动与受力分析14 3.2.1千斤顶运动分析14 3.2．2千斤顶受力分析18 3.3电动千斤顶的部件设计19 3.3．1螺旋传动装置19 3.3．2减速装置20 3.4本章小结23 第四章:传动装置计算及各轴设计与校核24 4.1传动装置的动力参数计算24 4.2各轴的设计25 第五章：维护与使用说明36 第六章：结论38 参考文献40 谢词42 电动式螺旋千斤顶设计 摘要 千斤顶作为一种传统顶举重物的工具，在建筑、铁路、医疗、汽车维修等各领域均得到广泛的应用。本文主要针对汽车用千斤顶的设计与制造技术进行了研究。 本文首先综合分析了国内外汽车用千斤项的发展现状和结构特点，讨论了开发新型汽车用千斤顶的意义。在综合分析比较各种现有汽车用千斤顶方案特点的基础上，提出了电动手动快速切换千斤顶的设计方案。 本文主要对选定的汽车用千斤项方案进行了概念设计和详细设计，还完成了课题研究所需的图纸设计工作。 据国家统计局统计信息显示，我国个人汽车保有量1999年已达534万辆，2002年国内轿车年产销量均突破100万辆，2003年有继续增长的趋势。我国汽配企业不仅供应国内市场的需求，每年还生产出口约500万台汽车用千斤顶到世界各国。考虑到每年我国生产制造的汽车用千斤项产量巨大，若能采用本文提出的方法设计制造该产品，则可大量节约材料成本，其经济效益十分可观。同时，优化后的产品在降低生产成本的前提下，其可靠性和稳定性方面也有了一定的提高。 关键字:汽车用千斤顶，优化设计，发展现状 Electric screw jack desig
n Abstract Jack as a traditio
nal top-heavy lifti
ng tools i
n co
nstructio
n, railway, medical, automotive repair a
nd other fields have bee
n widely used. This paper mai
nly for automotive desig
n a
nd ma
nufacturi
ng tech
nology jacks were studied. Firstly, a comprehe
nsive a
nalysis of domestic a
nd foreig
n cars with extremely heavy items a
nd structural features of the curre
nt developme
nt, discussed the developme
nt of
new car with a jack sig
nifica
nce. I
n the comprehe
nsive a
nalysis a
nd compariso
n of existi
ng car with a jack program features, based o
n the proposed electric ma
nual rapid switchi
ng jack desig
n. This paper focuses o
n a selected vehicle program was extremely heavy items co
nceptual desig
n a
nd detailed desig
n, also completed the research work required desig
n drawi
ngs. Accordi
ng to the Natio
nal Bureau of Statistics show that Chi
na's perso
nal car ow
nership i
n 1999 reached 5.34 millio
n, i
n 2002 domestic car has broke
n o
ne millio
n a
n
nual sales i
n 2003, the tre
nd has co
nti
nued to grow. Of auto parts compa
nies o
nly supply the domestic market dema
nd, productio
n a
nd export a
n
nually about 500 millio
n vehicles with a jack to the world. Taki
ng i
nto accou
nt the cou
ntry's automotive ma
nufacturi
ng extremely heavy items yield treme
ndous, if we adopt the method proposed i
n this paper the desig
n a
nd ma
nufacture of the product, you ca
n save a lot of material costs, its eco
nomic be
nefits are substa
ntial. Mea
nwhile, the optimized products u
nder the premise of reduci
ng productio
n costs, the reliability a
nd stability has also bee
n improved to some exte
nt. Key word: Car with a jack； optimal desig
n；developme
nt status