含轴承间隙复摆颚式破碎机动态性能分析  

Analysis of Dynamic Performance for Compound Pendulum Jaw Crusher with Bearing Clearance

作　　者：姜志宏[1,2] 张呈堃 Jiang Zhihong;Zhang Chengkun(School of Mechanical and Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Jiangxi Province Engineering Research Center for Mechanical and Electrical of Mining and Metallurgy,Ganzhou 341000,China)

机构地区：[1]江西理工大学机电工程学院,江西赣州341000 [2]江西省矿冶机电工程技术研究中心,江西赣州341000

出　　处：《机械传动》2024年第8期134-140,共7页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(52364025);江西省重点研发计划项目(20181ACE50034)。

摘　　要：在复摆颚式破碎机中,轴承间隙对其稳定性及轴承寿命均有一定影响。为分析轴承间隙对复摆颚式破碎机动态性能的影响,采用拉格朗日乘子法,建立含轴承间隙复摆颚式破碎机的动力学模型,分析了不同偏心轴转速及间隙值对破碎机动态性能的影响;并通过试验验证了其准确性。结果表明,增加偏心轴转速与减小间隙值均可减小破碎机动颚轴承滚子与内外滚道的碰撞力,增强运行稳定性及提高轴承寿命;增加偏心轴转速还可减少轴承的不规则磨损。对于PE150×250颚式破碎机,在提高生产率的同时减弱破碎机中的冲击现象,选择38 rad/s的转速最佳。The clearance between the eccentric shaft and the bearing of the movable jaw axle is neglected in previous studies on the dynamic performance of complex pendulum jaw crushers.Aiming to the impact of the bearing clearance on the dynamic performance of complex pendulum jaw crushers,a dynamic model of a com⁃plex pendulum jaw crusher with bearing clearance is established using the Lagrange multiplier method.Its cor⁃rectness is verified through experiments,and the effects of different eccentric shaft speeds and clearance values on the dynamic performance of the crusher are analyzed.The results indicate that increasing the eccentric shaft speed and reducing the clearance value can improve the dynamic performance of the crusher,enhance its opera⁃tional stability,and extend the bearing life.Increasing the eccentric shaft speed can also reduce irregular wear of the bearings.For the PE150×250 jaw crusher,in order to improve productivity while reducing the impact phe⁃nomenon within the crusher,a speed of 38 rad/s is considered optimal.

关 键 词：轴承间隙 复摆颚式破碎机 碰撞力 动态性能 

分 类 号：TD451[矿业工程—矿山机电]