机械5

摘要 本课题是针对天然气管道内径测量的问题而进行设计。油气管道运输是世界上5大运输方式，在国民经济中占有重要地位；然而，由于油气管道介质易燃易 爆，油气管道失效，容易导致严重的事故，严重危害当地人民的生命和财产安全，可能会对当地的生态环境造成灾难性的后果。为了确保油气管道的运输安全，科学的检查和合理维护油气管道一直是世界各国关注的焦点和难点。 本次设计的通径测量器能够对直径在400-1000mm的天然气管道进行检测，该机构包括以下部分： (1)列车式两段机身结构，可以通过一些弯道。 (2)伞状的运动结构，通过伞状运动结构的伸缩适应不同内径的管道。 (3)前后分置驱动轮，可以双向运行。 根据上述计算和设计，借助UG-NX10.0和CAD软件完成了数字模型，经过运动仿真验证了本设计的正确性，为天然气管道检测技术提供了新的方法。 关键词：天然气管道；伞型结构；内径测量；UG-NX10.0 ABSTRACT This subject is aimed at the problem of measuri
ng the i
n
ner diameter of
natural gas pipeli
ne. Oil a
nd gas pipeli
ne is theworld's 5 major modes of tra
nsport, occupyi
ng the importa
nt positio
n i
n
natio
nal eco
nomy; however, due to the oil a
nd gas pipeli
ne medium flammable a
nd explosive, oil a
nd gas pipeli
ne failure, easily lead to serious accide
nts, seriously e
nda
ngeri
ng the safety of the local people's life a
nd property, there could be disastrous co
nseque
nces for the local ecosystem. I
n order to e
nsure the tra
nsportatio
n safety of oil a
nd gas pipeli
nes, scie
ntific exami
natio
n a
nd ratio
nal mai
nte
na
nce of oil a
nd gas pipeli
nes have always bee
n the focus a
nd difficulty of theworld. The desig
ned diameter measuri
ng device ca
n measure the diameter of the
natural gas pipeli
ne at 400-1000mm,which i
ncludes the followi
ng parts: (1) Trai
n type two sectio
n fuselage structure ca
n pass some curve. (2) Umbrella moveme
nt structure, through the umbrella moveme
nt structure expa
nsio
n, adapts the differe
nt bore diameter the pipeli
ne. (3) Drive thewheel before a
nd after,which ca
n operate i
n both directio
ns. Accordi
ng to the above calculatio
n a
nd desig
n, the digital model has bee
n completed by mea
ns of UG-NX10.0 a
nd CAD software, a
nd the correct
ness of the desig
n has bee
n proved by motio
n simulatio
n. It provides a
new method for gas pipeli
ne i
nspectio
n. keywords: Natural gas pipeli
ne; Umbrella shape structure; Bore diameter measureme
nt; UG-NX10.0 目录 1绪论1 2国内外研究现状2 2.1国外现状分析2 2.1.1非接触式通径检测器3 2.1.2接触式通径检测器3 2.2国内研究现状4 3通径测量器初步设计6 3.1运动方式6 3.1.1拖曳式6 3.1.2非拖曳式6 3.2驱动方式选择6 3.2.1轮式行走7 3.2.2履带行走7 3.3姿态调整的选择7 3.3.1加传感器的关节进行调整7 3.3.2利用吊篮方式进行调整8 3.3.3采用新式吊环进行调整8 3.4自适应分析9 4基本方案的确定10 4.1方案一的设计与分析10 4.1.1机身的设计10 4.1.2测量臂的设计10 4.1.3伸缩单元11 4.1.4变量长度单位12 4.1.5关节单元12 4.1.6驱动轮的设计13 4.1.7方案一的分析13 4.2方案二的设计与分析13 4.2.1机身的设计14 4.2.2机身内部传动结构设计14 4.2.3进给螺杆与螺母的设计15 4.2.4吊篮的设计15 4.2.5测量臂的设计16 4.2.6方案二分析16 4.3方案选择及优化16 5.1机身结构18 5.1.1机身内部传动机构的设计18 5.1.2进给丝杠和螺母的设计19 5.1.3选择联轴器23 5.1.4选择键24 5.2吊环的设计24 5.3轴承的设计25 5.4测量臂的设计25 5.5驱动轮的设计26 5.6总体装配体设计26 5.7测量器运动仿真28 6总结29 参考文献30 致谢31