阿基米德斜撑离合器楔块型面修形设计及其性能分析
|
摘要
在建立不同初始内楔角阿基米德型面模型基础上,对离合器接触性能(Hertz应力、周向应力、总变形)进行了分析,并与三圆弧型面离合器进行了对比。为了提高阿基米德型面斜撑离合器承载性能,通过增大其初始内楔角对阿基米德楔块型面进行修形,并对修形后离合器的接触性能进行了分析。分析结果表明:增大修形系数μ能减小接触应力,提高离合器强制连续的临界扭矩。此外,从自锁条件分析得到了最大修形系数μ_(max)。
Contact properties of Archimedes type sprag clutch(including Hertz stress,circumferential stress and total deformation)were analyzed and compared with three-arc type sprag clutch on the basis of different initial inner wedge angle models.To improve the bearing capacity of Archimedes type sprag clutch,modification on sprag profile of Archimedes was conducted by increasing the initial inner wedge angle,and contact properties of clutch were analyzed after modification;The results show that contact stress is reduced and the critical torque is improved when increasing modification coefficient.Moreover,the maximum modification coefficientμis obtained from self-locking condition analysis.
Contact properties of Archimedes type sprag clutch(including Hertz stress,circumferential stress and total deformation)were analyzed and compared with three-arc type sprag clutch on the basis of different initial inner wedge angle models.To improve the bearing capacity of Archimedes type sprag clutch,modification on sprag profile of Archimedes was conducted by increasing the initial inner wedge angle,and contact properties of clutch were analyzed after modification;The results show that contact stress is reduced and the critical torque is improved when increasing modification coefficient.Moreover,the maximum modification coefficientμis obtained from self-locking condition analysis.
引文
[1]严宏志,杨兵,胡魁贤,等.单圆弧PCE型离合器楔合过程力学特性分析[J].煤炭学报,2010,35(6):1034-1038.Yan Hongzhi,Yang Bing,Hu Kuixian,et al.Mechanical Contact Quality Analysis of Engaging Process of the Single Arc PCE-type Clutch[J].Journal of China Coal Society,2010,35(6):1034-1038.
[2]Xu G,Lowen G.A Mathematical Model of an Overrunning Sprag Clutch[J].Mechanism and Machine Theory,1994,29(1):11-23.
[3]胡大国.对数螺线超越离合器的楔角计算[J].火炮发射与控制学报,1996(1):23-33.Hu Daguo.The Calculation of Logarithmic Spiral Clutch Wedge Angle[J].Journal of Gun Launch&Control,1996(1):23-33.
[4]张永岗,姚文席.阿基米德螺旋超越离合器的楔角研究[J].研究探索,2000(11):17-18.Zhang Yonggang,Yao Wenxi.Survey of Wedge Angle of the Archimedean Spiral Overrunning Clutch[J].Research&Discussion,2000(11):17-18.
[5]严宏志,吴凯,何明生.阿基米德曲面楔块的PCE型离合器动力学特性分析[J].机械设计,2011,28(4):31-35.Yan Hongzhi,Wu Kai,He Mingsheng.Dynamic Analysis of Archimedes Curved Surface Wedge PCE Clutch[J].Journal of Machine Design,2011,28(4):31-35.
[6]严宏志,顾俊,何明生.强制连续约束超越离合器楔角疲劳寿命分析及楔块结构优化[J].机械科学与技术,2011,30(11):1965-1972.Yan Hongzhi,Gu Jun,He Mingsheng.Fatigue Life Analysis and Structural Optimization of PCE Clutch Sprag[J].Mechanical Science and Techonology for Aerospace Engineering,2011,30(11):1965-1972.
[7]李志杰,石光林,温全明.超越离合器鼓形滚柱的优化设计[J].机械传动,2013,37(4):53-59.Li Zhijie,Shi Guanglin,Wen Quanming.Optimization Design of the Drum Roller of the Overrunning Clutch[J].Journal of Mechanical Transmission,2013,37(4):53-59.
[8]段全心.滚柱轴承离合器参数分析及优化[D].太原:太原科技大学,2008.
[9]郭惠昕,吴晓,张龙庭.楔块式单向超越离合器结构参数的模糊优化设计[J].机械设计,2001(2):25-27.Guo Huixin,Wu Xiao,Zhang Longting.Fuzzy Optimization Design of the Structure Parameters of Sprag Overrunning Clutch[J].Journal of Machine Design,2001(2):25-27.
[10]朱楚,朱如鹏,靳广虎.对斜撑超越离合器力学性能的影响分析[J].机械制造,2012,41(5):11-20.Zhu Chu,Zhu Rupeng,Jin Guanghu.Analysis of Effects on Mechanical Properties of Sprag Overrunning Clutch[J].Machinery,2012,41(5):11-20.
[11]卿茂辉.对数型面楔块斜撑离合器接合特性及磨损寿命分析[D].长沙:中南大学,2014.
[12]朱楚.高速斜撑超越离合器设计方法研究[D].南京:南京航空航天大学,2012.
[2]Xu G,Lowen G.A Mathematical Model of an Overrunning Sprag Clutch[J].Mechanism and Machine Theory,1994,29(1):11-23.
[3]胡大国.对数螺线超越离合器的楔角计算[J].火炮发射与控制学报,1996(1):23-33.Hu Daguo.The Calculation of Logarithmic Spiral Clutch Wedge Angle[J].Journal of Gun Launch&Control,1996(1):23-33.
[4]张永岗,姚文席.阿基米德螺旋超越离合器的楔角研究[J].研究探索,2000(11):17-18.Zhang Yonggang,Yao Wenxi.Survey of Wedge Angle of the Archimedean Spiral Overrunning Clutch[J].Research&Discussion,2000(11):17-18.
[5]严宏志,吴凯,何明生.阿基米德曲面楔块的PCE型离合器动力学特性分析[J].机械设计,2011,28(4):31-35.Yan Hongzhi,Wu Kai,He Mingsheng.Dynamic Analysis of Archimedes Curved Surface Wedge PCE Clutch[J].Journal of Machine Design,2011,28(4):31-35.
[6]严宏志,顾俊,何明生.强制连续约束超越离合器楔角疲劳寿命分析及楔块结构优化[J].机械科学与技术,2011,30(11):1965-1972.Yan Hongzhi,Gu Jun,He Mingsheng.Fatigue Life Analysis and Structural Optimization of PCE Clutch Sprag[J].Mechanical Science and Techonology for Aerospace Engineering,2011,30(11):1965-1972.
[7]李志杰,石光林,温全明.超越离合器鼓形滚柱的优化设计[J].机械传动,2013,37(4):53-59.Li Zhijie,Shi Guanglin,Wen Quanming.Optimization Design of the Drum Roller of the Overrunning Clutch[J].Journal of Mechanical Transmission,2013,37(4):53-59.
[8]段全心.滚柱轴承离合器参数分析及优化[D].太原:太原科技大学,2008.
[9]郭惠昕,吴晓,张龙庭.楔块式单向超越离合器结构参数的模糊优化设计[J].机械设计,2001(2):25-27.Guo Huixin,Wu Xiao,Zhang Longting.Fuzzy Optimization Design of the Structure Parameters of Sprag Overrunning Clutch[J].Journal of Machine Design,2001(2):25-27.
[10]朱楚,朱如鹏,靳广虎.对斜撑超越离合器力学性能的影响分析[J].机械制造,2012,41(5):11-20.Zhu Chu,Zhu Rupeng,Jin Guanghu.Analysis of Effects on Mechanical Properties of Sprag Overrunning Clutch[J].Machinery,2012,41(5):11-20.
[11]卿茂辉.对数型面楔块斜撑离合器接合特性及磨损寿命分析[D].长沙:中南大学,2014.
[12]朱楚.高速斜撑超越离合器设计方法研究[D].南京:南京航空航天大学,2012.