带式输送机托辊组振动噪声仿真分析及参数优化  

Simulation analysis and parameter optimization of vibration and noise of belt conveyor roller set

作　　者：郝洪涛[1,2] 刘建昊 HAO Hongtao;LIU Jianhao(School of Mechanical Engineering,Ningxia University,Yinchuan 750021,China;Ningxia Key Laboratory of CAE on Intelligent Equipment,Yinchuan 750021,China)

机构地区：[1]宁夏大学机械工程学院,宁夏银川750021 [2]宁夏智能装备CAE重点实验室,宁夏银川750021

出　　处：《煤炭工程》2024年第8期218-224,共7页Coal Engineering

基　　金：宁夏重点研发计划项目(2023BDE03005);宁夏重点研发项目(2019BDE03001)。

摘　　要：带式输送机托辊组产生的振动噪声受多因素联合影响,为解决其振动噪声过大问题,文章提出一种基于有限元-边界元理论对托辊组振动噪声分析与优化的方法。首先,对托辊组进行模态分析与动力学仿真,探明托辊组的振动特性;然后,基于有限元-边界元复合声场仿真方法,作声场的谐响应分析计算托辊组的声场分布,并搭建实际测试平台验证声学仿真模型的可靠性;最后,结合输送能力与轻量化约束条件,得到托辊组结构参数与工作参数的最优解。结果表明,有限元-边界元法可有效模拟托辊组声场分布和变化规律,优化后托辊组噪声声压级较优化前减小约6.1dB,并且托辊组综合性能均有所改善,可对实际工程中的带式输送机优化设计起到有效的指导作用。The vibration noise generated by the rollers of the belt conveyor is influenced by various factors.To address the issue of excessive vibration noise,a method was proposed using the finite element-boundary element theory to analyze and optimize the vibration noise of the rollers.Firstly,modal analysis and dynamic simulation of the belt conveyor were carried out to explore the vibration characteristics of the rollers;then,the harmonic response analysis of the acoustic field was conducted using the finite element-boundary element composite acoustic field simulation method,to calculate the distribution of the acoustic field in the roller group,and an actual test platform was constructed to validate the reliability of the acoustic simulation model;finally,by considering the conveying capacity and lightweight constraints,the optimal solution for the structural parameters of the roller group and the working parameters of the roller was determined.The optimal solution of the structural parameters of the roller group and the working parameters of the roller were obtained with the constraints of conveying capacity and light weight.The results show that the finite element-boundary element method effectively simulate the sound field distribution and change rule of the roller group,after the optimization,the noise sound pressure level of the roller group is about 6.1 dB lower,and the comprehensive performance of the roller group has been improved,which can be used to guide the optimal design of the belt conveyor in the actual project.

关 键 词：托辊组 振动噪声 有限元-边界元 声压级 参数优化 

分 类 号：TD528[矿业工程—矿山机电]