微耕机扶手架颗粒阻尼吸振器设计及试验研究  

Design and experimental study of the particle damping vibration absorber for a microcultivator handrail

作　　者：李浩 尹宜勇[1] 齐林山 王岩[1] 梁栋 刘国栋 李君 LI Hao;YIN Yiyong;QI Linshan;WANG Yan;LIANG Dong;LIU Guodong;LI Jun(College of Engineering,China Agricultural University,Beijing 100083,China)

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《振动与冲击》2024年第18期321-328,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金面上项目(52175126)。

摘　　要：微耕机是我国丘陵山地广泛采用的农机具,耕作过程中手把处产生的剧烈振动危害了操作者的健康。该研究以IWGQ4-70型微耕机为研究对象,提出了一种适用于微耕机扶手架的颗粒阻尼吸振器设计方法,运用有限元法探究了扶手架的振动特性,运用离散元法分析了颗粒阻尼吸振器的能量耗散机理,设计并搭建试验平台验证了仿真结果的正确性,优选了影响颗粒阻尼吸振器减振性能的颗粒材料、粒径、填充率等参数,进行了实际工况试验验证。结果表明,试验和仿真对应较好,优化方案取得预期效果,颗粒阻尼吸振器减振效果达到58.8%,减振效果明显。The microcultivator is a widely used agricultural machinery in the hilly and mountainous areas in China.The intense vibration generated at the handrail during the cultivation process conceals a health risk to operators.The IWGQ4-70 microcultivator was selected as the research object,and a particle damping absorber design method for the microcultivator handrail was proposed.The vibration characteristics of the handrail were investigated by the finite element method,and the energy dissipation mechanism of the particle damping absorber was analyzed by the discrete element method.A test platform was designed and constructed to validate the simulated results.Particle material,particle size,filling rate and some other parameters affecting the vibration damping performance of the particle damping absorber were optimally selected as the influential factors to be analysed and their effects were verified in actual working condition tests.The results show a good correspondence between the experiments and simulations results,and the optimized solution achieves the expected effect,with a vibration reduction effect of 58.8%and significant damping effect.

关 键 词：微耕机 扶手架 颗粒阻尼 离散元 减振 

分 类 号：S219.6[农业科学—农业机械化工程] TB535[农业科学—农业工程] O328[理学—物理]