摘要
针对无油润滑涡旋压缩机防自转机构的动力特性问题,建立了小曲拐防自转机构的机构模型;基于小曲拐防自转机构的工作原理,从运动学和机构学角度分析小曲拐的受力,建立小曲拐的运动平衡方程;利用三维建模软件和有限元分析软件ANSYS建立了单个小曲拐的三维模型,分析了防自转机构小曲拐数目为3时,小曲拐在不同曲轴转角下的变形和应力状态,并对小曲拐在交变载荷作用下的疲劳强度及3个小曲拐的变形协调关系进行了分析。结果表明,小曲拐的最大变形发生在上下两端,最大应力发生在上下两端和中间退刀槽部分。
To study the dynamics charactenstms oI off- tree scroll compressor anti- rotatxon mechanism,a model of anti--rotation mechanism of mini--crank was established. On the basis of op- eration principle of anti--rotation mechanism of mini--crank,the force action on the mini--crank was analyzed with the kinematics and the mechanism,and the motion equation of mini--crank was estab- lished. Three--dimensional model of a mini--crank was established by 3D modeling software and fi- nite element analysis software ANSYS. The number of anti--rotation mechanism of mini--crank has three, the deformation and stress state of the mini-- crank in the different crank angles were analyzed, fatigue strength under alternating loads of the mini--crank was studied and the compatible state of de- formation between three mini--cranks was discussed. The results show that the maximum deforma- tion occurs in the upper and lower ends and the maximum stress occurs in the upper and lower ends and intermediate undercuts part in mini--crank.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2014年第2期236-241,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50975132
51265026)
关键词
涡旋压缩机
小曲拐
有限元法
变形
应力
疲劳强度
scroll compressor
mini -- crank
finite element analysis
deformation
stress
fatiguestrength
