摘要
以PE-250×400颚式破碎机曲柄摇杆机构简化模型为研究对象,采用接触碰撞模型及库伦摩擦模型来模拟含间隙运动副,并应用ANSYS软件将动颚转化为柔性构件,研究多运动副间隙及动颚为柔体和刚体时对破碎机工作机构动力学特性的影响。3个运动副间隙使刚性破碎机构的速度、加速度和接触力产生较大波动;而柔性构件对销轴与轴套之间的碰撞有一定缓冲作用,各动态特性波动均得到了改善。以上研究更加接近实际工况,为优化颚式破碎机曲柄摇杆机构及精密性设计和制造提供了理论依据。
The simplified model of the crank-rocker mechanism of PE-250×400 jaw crusher served as the study objective, and the contact collision model as well as Coulomb friction model were applied to simulate the motion pair with clearance. In ANSYS, the movable jaw was converted to a flexible part, and then the dynamics characteristics of the working mechanism of the crusher were studied on the multiple motion pair clearance and the movable jaw being considered as the flexible body and the rigid body. The working mechanism with three motion pair clearance made the speed, acceleration and contact force of the rigid working mechanism of the crusher generate considerable fluctuation; while the flexible working mechanism brought about some buffering effects on collision between the pin and the pin sleeve, thus the fluctuation of dynamics characteristics greatly reduced. The study results was close to actual working situation, and offered theoretical reference for optimization as well as precious design and manufacture of the crank-rocker mechanism of the jaw crusher.
出处
《矿山机械》
2015年第1期76-80,共5页
Mining & Processing Equipment
关键词
颚式破碎机
动力学仿真
曲柄摇杆机构
多运动副间隙
柔体
动态特性
jaw crusher
dynamics simulation
crank-rocker mechanism
multiple motion pair clearance
flexible body
dynamics characteristic
