中国石油大（北京）机械原理考研习题Homework2.pptVIP

下载本文档

20
0
约2.17千字
约 35页
2017-04-23 发布于四川
举报
版权申诉

中国石油大（北京）机械原理考研习题Homework2.ppt

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

中国石油大（北京）机械原理考研习题Homework2

7-７ Shown below is a hoist. The teeth numbers of all the gears are: Z1=20, Z2=50, Z2’=15, Z3=30, Z3’=1, Z4=40, Z4’=18, Z5=52. Find the train ratio i15 and point out the rotating direction of the handle to raise the weight. ;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;各轮转向标注在图上; 常见错误： 1、蜗杆蜗轮间相对转动方向错误或漏标！;7-8 Shown below is the gear train in a clock. S, M and H denote the pointers of second, minute and hour, respectively. The given numbers of teeth are Z1=Z2’=8, Z2=64, Z3’=12, Z4’=15. If the modules of gear 4 and gear 5 are equal, find the numbers of teeth Z3, Z4, and Z5. ;Solution:;(2); 常见错误： ;7-9. Shown in Fig.7-19 is a differential gear train with Z1=15, Z2=25, Z2’=20, Z3=60, n1=200 r/min, n3=50 r/min. Find nH when（1）n1 and n3 are in the same direction; (2) n1 and n3 are in the opposite directions.;Solution: 此轮系为一差动轮系;Solution: 此轮系为一差动轮系; 常见错误1：; 常见错误2：; 常见错误3：; 常见错误4：;7-10 Shown below is a gear train in which gear 3 engages with gears 2 and 4 simultaneously. What kind of gear train is it? If Z1=34, Z2=Z3=20, and Z4=74, find the train ratio i1H. ;?;常见错误：;7-11 Shown below is a gear train with Z1=16, Z2= Z2’ =25, Z3=57, Z4=56. Find the train ratio i14. ;;;常见错误：1、齿数比前面的正负号。;7-12 In the combined gear train shown below, Z1=36, Z2=60, Z3=23, Z4=49, Z4’=69, Z5=31, Z6=131, Z7=94, Z8=36, Z9=167, n1=3549 r/min. Find both the magnitude and the direction of nH. ;(a) In ordinary gear train 1-2-3-4;(b) In the differential gear train 4’-5-6-7:;(c) In planetary gear train 6-7-8-H;7-13 In the combined gear train shown below, Z1= Z5= Z6=17, Z2=18, Z2’=27, Z3=34, Z4=51. n1=110 r/min. Find both the magnitude and the direction of n6. ;;;;常见错误：两个基本周转轮系的系杆是不一样的。共用同一代号H引起混淆。; 常见错误：;7-14. Shown in Fig.7-24 is a differential gear train in a textile machi