菠萝带状旋耕开沟机刀辊轴设计与试验  

Design and test of knife roller shaft of pineapple ribbon rotary tillage ditching machine

作　　者：孙鹏[1,2] 李海亮 孙海天 王宏轩 孙伟生 汪春[1,2] Sun Peng;Li Hailiang;Sun Haitian;Wang Hongxuan;Sun Weisheng;Wang Chun(Heilongjiang Bayi Agricultural University,Daqing,163319,China;South Subtropical Crops Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,524091,China;College of Mechanical&Electrical Engineering,Henan Agricultural University,Zhengzhou,450002,China)

机构地区：[1]黑龙江八一农垦大学,黑龙江大庆163319 [2]中国热带农业科学院南亚热带作物研究所,广东湛江524091 [3]河南农业大学机电工程学院,郑州市450002

出　　处：《中国农机化学报》2025年第1期13-19,43,共8页Journal of Chinese Agricultural Mechanization

基　　金：中国热带农业科学院基本科研业务费专项资金(1630062024031);中国热带农业科学院国家热带农业科学技术中心科技创新团队(CATASCXTD202409)。

摘　　要：刀辊作为菠萝带状开沟机的核心部件,其结构和强度是影响开沟效果和质量的重要因素。首先,结合菠萝种植的农艺要求和农业机械生产指标,对菠萝带状旋耕开沟机刀辊轴进行结构设计,利用SolidWorks2022进行建模。其次,刀辊工作时会受到环境和工况等复杂因素的影响,通过ANSYS Workbench17有限元分析软件对刀辊模型进行模态分析,得出约束状态下的前八阶刀辊频率分布及振动位移。最后,以刀辊轴最大工作转速为因素,振动频率为评价指标进行田间试验。结果表明:当轴外径为74 mm、内径为58 mm、行距为500 mm、沟宽为260 mm时,刀辊模态分析第一阶固有频率为66.778 Hz,远远大于刀辊轴实际最大工作频率16.25 Hz,确定旋耕机刀辊轴结构符合设计要求。研究结果可在实际应用及生产中降低刀辊的故障发生率,对菠萝种植农业生产机械化发展研究具有重要意义。The structure and strength of the knife roll,which is the core part of the pineapple belt trenching machine,are the important factors affecting the trenching effect and quality.Firstly,combined with the agronomic requirements of pineapple planting and agricultural machinery production indicators,the structural design of the knife roller of the pineapple ribbon rotary tillage trenching machine was carried out,and the modeling was carried out with SolidWorks2022.Secondly,the tool roll will be affected by complex factors such as environment and working conditions when it is working.The modal analysis of the tool roll model is carried out by ANSYS Workbench17 finite element analysis software,and the frequency distribution and vibration displacement of the first eight steps of the tool roll under constrained state are obtained.Finally,the maximum working speed of the cutter roller is taken as the factor and the vibration frequency is taken as the evaluation index.The results show that when the outer diameter of the shaft is 74 mm,the inner diameter is 58 mm,the row spacing is 500 mm,and the groove width is 260 mm,the first natural frequency of the tool roll modal analysis is 66.778 Hz,which is far greater than the actual maximum operating frequency of the tool roll 16.25 Hz,and it is confirmed that the structure of the rotary tiller tool roll meets the design requirements.The results of this study can reduce the failure rate of the cutter roller in practical application and production,which is of great significance for the development of agricultural production mechanization in pineapple cultivation.

关 键 词：菠萝 旋耕机刀辊 SOLIDWORKS 有限元 模态分析 

分 类 号：S222.3[农业科学—农业机械化工程]