PE型颚式破碎机转子临界转速的计算与分析  

Rotor critical speed calculation and analysis of PE type jaw crusher

作　　者：王军锋[1,2] 孙康[1,2] 

机构地区：[1]中南大学机电工程学院,湖南长沙410083 [2]江西理工大学应用科学学院,江西赣州341000

出　　处：《机械设计》2013年第10期84-87,共4页Journal of Machine Design

基　　金：国家自然科学基金资助项目(51075403);教育部博士点基金资助项目(20100162110004);江西省自然科学基金资助项目(20122BAB206030)

摘　　要：以PE250×400型颚式破碎机转轴为研究对象,通过对转轴系统的简化,采用一维有限元的方法,建立了破碎机的一维转子系统有限元模型,研究了轴承的支承刚度、陀螺效应和转轴质量对破碎机转子系统临界转速的影响,结果表明,轴承的支承刚度在一定数值范围内对转子的临界转速有较大的影响,陀螺效应对转子系统的1阶临界转速有明显的影响,当轴承刚度大于一定数值时,陀螺效应对第2阶临界转速也开始有影响,转轴质量对转子系统的1阶和2阶正进动临界转速有较大的影响。With the PE250 - 400 jaw crusher shaft as the re- search object, and by simplifying the shaft system, one-dimensional finite element method was used to establish the crusher one-dimen- sional finite element model of the rotor system, the influence of the bearing stiffness, gyro effect and the shaft mass to the critical speed was researched. The results show that the bearing stiffness in cer- tain numerical range has great influence on the critical speed, gyro effect has a significant influence to the first step critical speed, when bearing stiffness is more than a certain value, gyro effect be- gan to affect the second step critical speed, the shaft mass has great influence to the first and second positive precession critical speed.

关 键 词：颚式破碎机 临界转速 一维有限元 转子动力学 

分 类 号：TD451[矿业工程—矿山机电] TH113.1[机械工程—机械设计及理论]