| In the current social development,the vibrating screen is used in a variety of complex screening environments.In the actual production process,the vibrating screen is used to screen the materials.How to ensure efficient and low-cost production of vibrating screens is an important issue in the production process at home and abroad.Through the results of modal analysis and transient response analysis,the structure of the shaker is correspondingly improved and the ant colony algorithm optimizes the parameters of the shaker,which improves the work efficiency of the shaker,reduces the overall weight of the shaker,and guarantees In the simulated working state of the vibrating screen,the distribution of stress and the position of the stress are not greatly affected,to a certain extent,the cost of producing the vibrating screen is reduced,and the power per unit of production volume of the vibrating screen is reduced loss.This article takes the 2YA2470 circular vibrating screen as the research object,establishes a physical model based on its actual size,and analyzes the dynamic and kinematic characteristics of the circular vibrating screen;based on the kinematic parameters,dynamic parameters and actual parameters of the circular vibrating screen,Using the 3D modeling software Solidworks2016 and the workbench in the finite element simulation software ANSYS to establish a finite element model of the overall shaker,using two modules in dynamic analysis(modal analysis)and static analysis(transient response analysis)Finite element analysis;then use the results of the simulation to select a suitable location to improve the structure of the circular vibrating screen to achieve the purpose of lightweight design;finally,Matlab and ant colony algorithm are used to optimize the motion parameters of the vibrating screen,thereby reducing the production process.Power loss.The thesis mainly does the following specific work:(1)Based on the two-dimensional engineering drawing of 2YA2470 circular vibrating screen,three-dimensional modeling using Solidworks2016 software.Using the simplified 3D model,the workbench simulation software was used to simulate and analyze the simplified 3D model.The dynamics module(modal analysis)in the software was used to solve the overall simulation of the vibrating screen.The low-order natural frequency value of the model is compared with the working frequency value,and it is judged that this type of circular vibrating screen will not produce resonance;the static module(transient response analysis)in the software is used to simulate and solve the side box that is easy to crack,Simulated the effect of the external load on the circular vibrating screen,and obtained the change value of the stress size and position of the side box body and the beam part of the vibrating screen with time.Taking the conclusions obtained from the simulation results as reference objects,the structural improvement analysis of this type of circular vibrating screen was carried out.(2)According to the results of simulation analysis,two schemes were adopted to improve the thickness of the side wall panels and the number of beams of the circular vibrating screen.The model of the circular vibrating screen was lightened and improved,and the redundant structure of the vibrating screen was removed.,Which reduces the vibration quality of the vibration screen.The two schemes were respectively simulated and analyzed under the same conditions as the circular vibrating screen before the improvement,and it was judged that the two improved circular vibrating screens would not resonate and the improved stress magnitude and position change value were obtained.The results of the comparison between the two schemes and the circular vibrating screen before improvement show that the resonance phenomenon and the change in stress size and position of the improved circular vibrating screen are not affected by the structural improvement,but the structural improvement reduces the overall circular vibrating screen.The net quality guarantees the basic conditions of the vibrating screen,which reduces the production cost of the vibrating screen.(3)Taking the motion parameters of the circular vibrating screen as the object,based on the optimization theory of ant colony algorithm,Matlab and ant colony algorithm are used to optimize the motion parameters(amplitude,vibration direction angle,installation inclination angle)of the improved circular vibrating screen Compare the parameters before and after optimization to ensure that the motion parameters of the circular vibrating screen meet the constraints and reduce the power loss in the production process,thus achieving the purpose of improving product performance under the condition of motive power.In this paper,based on the actual parameters of the vibrating screen,the motion and dynamic characteristics of the vibrating screen are studied,and the motion parameters and dynamic parameters of the vibrating screen during operation are determined.Based on the theory of kinematics and dynamics,the finite element design of the circular vibrating screen was carried out using modeling and simulation software,and the structural improvement was carried out based on the simulation results of the original circular vibrating screen.The comparison results of the low-order natural frequency values adopted in the modal analysis results determine that the circular vibrating screen will not produce resonance results;and under the condition of simulating the external load of the circular vibrating screen,the stress received by the circular vibrating screen The size and actual position will not have a greater impact on the circular vibrating screen due to structural changes,reducing production costs.The theoretical knowledge of ant colony algorithm is used in combination with Matlab to optimize the improved motion parameters and reduce the power loss in the production process.The research content and design method of this paper have a certain reference significance for the actual production and development of circular vibrating screens,and to a certain extent can improve the working efficiency of vibrating screens.Reference value. |
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