立轴冲击破碎机锤头磨损形式的确定  

Determination of Hammer Wear Type of Vertical Shaft Impact Crusher

作　　者：吕宁 房怀英[1] 杨建红[1] 陶寅 LU Ning;FANG Huaiying;YANG Jianhong;TAO Yin(Key Laboratory of Process Monitoring and System Optimization for Mechanical andElectrical Equipment, Huaqiao University, Xiamen 361021, China)

机构地区：[1]华侨大学机电装备过程监测及系统优化福建省高校重点实验室,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2019年第3期305-311,共7页Journal of Huaqiao University(Natural Science)

基　　金：福建省自然科学基金资助项目(2017J01108);福建省产学合作重大项目(2016H6013);福建省泉州市科技计划资助项目(2018C100R);华侨大学科研启动费资助项目(17BS305);华侨大学研究生科研创新基金资助项目(17013080024)

摘　　要：为研究立轴冲击破碎机锤头的磨损形式,在现有锤头磨损计算模型的基础上,结合赫兹接触理论和断裂力学,提出一种新的优化计算模型.通过离散单元法仿真分析锤头受力特性和颗粒运动特性,并与实验后的锤头表面微观形貌进行对比.实验结果表明:优化模型具有合理性,模拟仿真手段正确,具有可行性;并确定了冲击磨损是造成锤头磨损的主要形式.To determine the hammer wear type of vertical shaft impact crusher, a new optimization model was proposed based on the existing hammer wear calculation models, together with Hertz contact theory and fracture mechanics. The discrete element method was used to analyze the force characteristics of the hammer and the particle motion characteristics, and the simulated morphology of hammer surface was compared with that after used. The results indicate that the impact wear was the hammer wear type of vertical shaft impact crusher. The research also indicates that the optimization model is reasonable and the simulation method is feasible and correct.

关 键 词：立轴冲击破 锤头 磨损 离散单元法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]