Dynamic Analysis And Structure Parameter Optimization Of Large-Scale Linear Vibrating Screen

Vibrating screen production equipment is widely used in coal, metallurgy, construction and other industries, it is mainly used in the materials’ screening, dehydration, separation and other processing technology. Vibrating screen is widely used in industrial production due to its advantages of high productivity, smooth operation, occupies little space, convenient maintenance etc. With the continuous improvement of production requirement and continuous development of science and technology, vibrating screen tends to the trends of large-scale, high productivity and high reliability. Therefore, it is of great theoretical significance and applied value to research dynamic analysis and structure optimization design of vibrating screen.This thesis is mainly analyze the current domestic and foreign research situation and development on vibrating screen, and as the main research object to27m2large-scale linear vibrating screen, analyze the working principle and related design parameters of the large-scale linear vibrating screen. Simulation of simplified the part structures of vibrating screen by ANSYS software, and then establishes the finite element model of large-scale linear vibrating screen. According to the modal analysis and static analysis of finite element model, we attain its natural frequency and mode shape, stress and displacement distribution situation when the down status and operational status. Select key nodes for the harmonic analysis. According to the analysis results corresponding local structural modifications, and then adjust the center of mass of the modified vibrating screen. Guarantee its center of mass is located on the vibration direction line, avoiding part of the structure displacement deviation is too large due to its center of mass offsets. After the re-establishment of the finite element model with relevant corresponding modal analysis and harmonic analysis of key nodes. Verified the rationality of the local structural modification and center of mass adjustment. Finally optimization design of vibration parameters of the large-scale linear vibrating screen. And attain the optimal solution of vibration parameters by MATLAB optimization toolbox. Increased the productivity per unit power of the vibrating screen, and rationality of validating parameter optimization.