无油涡旋压缩机小曲拐动力特性与仿真研究

The dynamics analysis and simulation of mini-crank for oil-free scroll compressor

为了分析研究涡旋压缩机小曲拐的动力特性问题,从机构学入手将小曲拐简化为平面四杆机构,并从运动学以及动力学方面分析了无油涡旋压缩机小曲拐的受力情况。结果表明,小曲拐受力是连续、周期性的,且每个小曲拐都是半周受力,在一个周期内受力有两个最大值、两个最小值。最后采用SolidWorks和ADAMS软件对涡旋压缩机进行了三维建模与虚拟装配,通过运动仿真,获得了准确的运动学参数,从而验证了小曲拐防自转机构的可行性,为小曲拐的设计优化提供了参考依据。

In order to investigate the dynamic characteristics of mini-cranks for oil-free scroll compressor,it simplifies the mini-cranks as planar four-bar mechanism based on theory of mechanism,analyzes the forces acting on the mini-cranks according to the kinematics and dynamic theory.The results show that the forces acting on mini-cranks in a cycle are continuous and periodic.Two maximum forces and two minimum forces appear in a period of 2π.Based on Solidworks and Adams software,it builds 3D modeling and virtual assembly of oil-free scroll compressor,obtains the accurate kinematics parameters and the same motion law with the Four-bar mechanism law of mini-crank.This verifies the feasibility of mini-cranks as anti-rotation mechanism and provides certain reference for the optimization design of the mini-cranks.