弹簧刚度对辊式破碎机使用性能影响的仿真分析

摘要

Spring safety device as the roll crusher's key component, the value of spring stiffness has a very important impact on the performance of the whole device, when the spring-loaded is too large, the wear is intensified and the power consumption is increased; while small spring force will increase the number of articles whose dimeter are bigger than the averige value. Aiming at this problem, the relationship between different stiffness of spring and the vibration of angular velocity of the moving roll and its moving distance were studied through simulation analysis based on the ADAMS softwear by setting five different spring stiffness. To simulate the working condition of the crusher, random signal was applied. The simulation results show that the relationship between stiffness of spring and the vibration of angular velocity are no trend of monotonic increasing or decreasing, while the moving distance of the roll decreses with the increasing of the stiffness. This paper provides a new method to select and optimize the stiffness of spring safety device in roll crusher.%辊式破碎机中弹簧保险装置的弹簧刚度的大小对破碎机的使用性能具有重要影响,过大的弹簧力会促使辊子磨损加快和功率消耗增大,过小的弹簧力将使破碎产物的超粒增多。针对该问题,利用ADAMS仿真软件,采用随机载荷模拟破碎机的实际工况,设置了5种不同的弹簧刚度,通过仿真分析研究了弹簧刚度与动辊角速度波动及移动距离的关系。仿真结果表明：动辊角速度波动程度与弹簧刚度不呈单调递增或递减的关系,动辊的移动距离随着弹簧刚度的增大而减小。为辊式破碎机弹簧保险装置弹簧刚度的选择与优化提供了一种新的方法。