Dynamic analysis and simulation of four-axis forced synchronizing banana vibrating screen of variable linear trajectory  

作　　者：刘初升 张士民 周海沛 李珺 夏云飞 彭利平 王宏 

机构地区：[1]School of Mechanical and Electrical Engineering,China University of Mining and Technology

出　　处：《Journal of Central South University》2012年第6期1530-1536,共7页中南大学学报（英文版）

基　　金：Projects(50574091, 50774084) supported by the National Natural Science Foundation of China;Project(50921001) supported by the Innovative Research Group Science Foundation,China;Project supported by Jiangsu Scientific Researching Fund Project ("333" Project),China

摘　　要：A new concept of banana vibrating screen which has the same effect as traditional banana vibrating screen in a new way was put forward.The dynamic model of vibrating screen was established and its working principle was analyzed when the action line of the exciting force did not act through the centroid of screen box.Moreover,the dynamic differential equations of centroid and screen surface were obtained.The motions of centroid and screen surface were simulated with actual parameters of the design example in Matlab/Simulink.The results show that not only the amplitude has a significant decrease from 9.38 to 4.10 mm,but also the throwing index and vibrating direction angle have a significant decrease from 10.49 to 4.59,and from 58.10° to 33.29°,respectively,along the screen surface,which indicates that motion characteristics of vibrating screen are consistent with those of traditional banana vibrating screen only by means of a single angle of screen surface.What's more,such banana vibrating screen of variable linear trajectory with greater processing capacity could be obtained by adjusting the relative position of force center and the centroid of screen box properly.A new concept of banana vibrating screen which has the same effect as traditional banana vibrating screen in a new way was put forward. The dynamic model of vibrating screen was established and its working principle was analyzed when the action line of the exciting force did not act through the centroid of screen box. Moreover, the dynamic differential equations of centroid and screen surface were obtained. The motions of centroid and screen surface were simulated with actual parameters of the design example in Matlab/Simulink. The results show that not only the amplitude has a significant decrease from 9.38 to 4.10 mm, but also the throwing index and vibrating direction angle have a significant decrease from 10.49 to 4.59, and from 58.10° to 33.29°, respectively, along the screen surface, which indicates that motion characteristics of vibrating screen are consistent with those of traditional banana vibrating screen only by means of a single angle of screen surface. What＇s more, such banana vibrating screen of variable linear trajectory with greater processing capacity could be obtained by adjusting the relative position of force center and the centroid of screen box properly.

关 键 词：four-axis banana vibrating screen forced synchronizing variable linear trajectory dynamics simulation 

分 类 号：TH237.6[机械工程—机械制造及自动化]