基于多体动力学与离散元耦合的惯性圆锥破碎机动态性能研究

针对惯性圆锥破碎机工作时振动剧烈和产品指标差等缺陷开展研究,提出了一套结合理论分析、基于多体动力学与离散元法耦合模型仿真及试验验证的系统分析方法。该模型精确地分析了惯性圆锥破碎机的机械运动、非线性接触及矿料加载响应;对GYP 1200型惯性圆锥破碎机实施相应的工业试验,采用了两种不同的驱动转速,对破碎机的位移振幅、功率消耗、产品粒度分布及生产率等性能进行了数据采集与仿真结果进行详细比较,验证了耦合模型和分析方法的有效性;预测了物料颗粒流动行为及衬板破碎力分布规律;详细讨论了不同驱动转速和定锥质量等关键参数对破碎机动态性能的影响,总结了位移振幅、产品粒度分布及单位能耗随关键参数的变化规律。耦合仿真和结论可为改善衬板磨损、降低制造成本及优化工作参数等提供一定的依据。

A study on dynamic performance of an inertia cone crusher based on multi-body dynamics and discrete element coupling method

Aiming at the defect of an inertia cone crusher such as violent vibration and poor product indexes,a systematic analysis method combining theoretical analysis,multi-body dynamics,and a discrete element coupling method,and test verification was proposed.For model verification,the industrial tests were conducted on a GYP 1200 inertia cone crusher.Two different drive speeds were included in the experiments,and the testing devices were used to sample crusher performances such as displacement amplitude,power draw,product size distribution and throughput capacity in order to verify the validity of the coupling model and the analysis method.Furthermore,the behavior of the particle flow and the crushing force distribution in the concave were predicted.Finally,the influence of key parameters such as different drive speed and fixed cone mass on the dynamic performance of the crusher was discussed in detail.The coupling simulations and study results provided a basis for the improvement of linings wear,lowering manufacturing cost,and obtaining optimal operation parameters.