Spring Failure Analysis of Mining Vibrating Screens: Numerical and Experimental Studies

Applied Sciences

Shuangfu Suo¹  Dong Li²  Xiaohan Cheng³  Yue Liu⁴  Aiming Wang⁴  Jie Yang⁵  Guoying Meng⁵ 

[1] Information Engineering, China University of Mining &Technology-Beijing, Beijing 10083, China;Department of Intelligent Equipment, Changzhou College of Information Technology, Changzhou 213164, China;Department of Mechanical Engineering, State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China;;School of Mechanical Electronic &

关键词: mining vibrating screen;    finite element model;    spring stiffness decrease;    failure diagnosis;    amplitude variation coefficient;   

DOI  :  10.3390/app9163224

来源: DOAJ

【 摘 要 】

Spring failure is one of the critical causes of the structural damage and low screening efficiency of mining vibrating screens. Therefore, spring failure diagnosis is necessary to prompt maintenance for the safety and reliability of mining vibrating screens. In this paper, a spring failure diagnosis approach is developed. A finite element model of mining vibrating screens is established. Simulations are carried out and the spring failure influence rules of spring failure on the dynamic characteristics of mining vibrating screens are obtained. These influence rules indicate that the amplitude variation coefficients (AVCs) of the four spring seats in the x, y, and z directions can reveal two kinds of single spring failure and four kinds of double spring failure, which are useful for diagnosing spring failure. Furthermore, experiments are conducted. Comparison analyses of the experimental results and simulation results indicate that the proposed approach is capable of revealing various kinds of spring failure. Therefore, this approach provides useful information for diagnosing spring failure and guiding technical staff to routinely maintain mining vibrating screens.

【 授权许可】

Unknown