隔膜泵曲轴连杆连接松动动力学建模与分析  

Dynamic Modeling and Analysis for Loose Joint between Crank and Linkage of Membrane Pump

作　　者：史丽晨[1] 段志善[1] 

机构地区：[1]西安建筑科技大学机电学院,陕西西安710055

出　　处：《工矿自动化》2009年第12期73-76,共4页Journal Of Mine Automation

基　　金：教育部博士学科点专项科研基金资助项目(20070703003);陕西省自然科学基金资助项目(2007E204)

摘　　要：将隔膜泵曲轴连杆连接处连接松动按照磨损故障来考虑,采用碰撞-分离两状态接触力模型建立了相应的隔膜泵十字头滑块的动力学模型,在此基础上采用Runge-Kutta法进行了数值仿真,给出了不同参数下,即不同曲柄转速、不同磨损量、不同液体压力下的十字头滑块的位移-速度动态响应,并得出以下结论:隔膜泵曲轴连杆连接松动的动态响应受到曲柄转速的影响较大,与磨损量和活塞表面的液体压力也有一定的关系。The paper took the loose joint between crank and linkage of membrane pump as a wear fault and built dynamic model of cross slide of membrane pump according to contact force model in contactseparation states. On the basis it used Runge-Kutta method to make numerical simulation and gave dynamic response of displacement-speed of cross slide under different parameters, namely different crank rotate speeds, different wear rates and different liquid pressures. The result of the study indicated that the dynamic response of loose joint between crank and linkage of membrane pump is mainly influenced by crank rotate speeds, and it is also related with wear rate and liquid pressure of piston surface.

关 键 词：隔膜泵 曲轴 连杆 连接松动 动力学模型 十字头滑块 转速 磨损量 压力 故障诊断 

分 类 号：TD634.9[矿业工程—矿山机电]