摘要
目的:构建更加精确的粮仓螺杆推力模型。方法:利用数理模型进行建模,结合Janssen储粮压力理论和Janosi剪切—位移方程,建立剪切应力模型,并由剪切应力模型推导出螺杆的推力模型。通过设计并搭建试验装置,采用不同转速和压力组合进行全因素试验,将测得的试验数据与理论值进行对比。结果:推力模型理论值与试验值接近,曲线变化趋势相同,轴向推力模型平均相对误差为14%,阻力转矩模型平均相对误差为24%。结论:结合Janssen储粮压力理论和Janosi剪切—位移方程提出的不同深度下螺杆推力模型具有较高的可靠性。
Objective:To clarify the interaction mechanism model between screw and grain in grain pile depth,and to determine the mechanical characteristics of screw of spiral robot for granary at different speeds and depths,so as to provide the design basis for the motion control system.Methods:Using mathematical model,combining Janssen grain storage pressure theory and Janosi shear-displacement equation,the shear stress model was established,and then the thrust model of screw was derived from the shear stress model.Through the design and construction of the experimental device,the combination of different speed and pressure was used to carry out the all-factor experiment,and the measured experimental data was compared with the theoretical value.Results:The theoretical value of the thrust model was close to the experimental value,and the curve variation trend was the same.The average relative error of the axial thrust model was 14%,and the average relative error of the resistance torque model was 24%.Conclusion:The screw thrust model based on Janssen grain storage pressure theory and Janosi shear-displacement equation at different depths has high reliability.
作者
赵险峰
尹强
余俊鹏
杨柳
张永林
ZHAO Xianfeng;YIN Qiang;YU Junpeng;YANG Liu;ZHANG Yonglin(School of Mechanical Engineering,Wuhan Polytechnic University,Wuhan,Hubei 430023,China)
出处
《食品与机械》
CSCD
北大核心
2024年第2期84-90,共7页
Food and Machinery
基金
武汉轻工大学科研项目(编号:2023Y32)
湖北省科技厅科技人才服务企业项目(编号:2023DJC105)
湖北省技术创新计划重点研发专项项目(编号:2023BBB018)。
