To address problems encountered in current potato harvesting machines in hilly and mountainous areas,such as potato damage,poor adaptability,low operational efficiency,and the inability of traditional harvesters to me...To address problems encountered in current potato harvesting machines in hilly and mountainous areas,such as potato damage,poor adaptability,low operational efficiency,and the inability of traditional harvesters to meet the requirements in these areas,a new potato harvester equipped with excavation and a multi-stage separation conveyor was developed by using design and simulation programs as an innovative way to identify the best operating factors.SolidWorks Software was used to design an excavation and a multi-stage separation conveyor.ANSYS Workbench machine static structure analyzed stress,strain,and deformation.The working process of soil and tuber separation was tested and kinematically analyzed by EDEM-RecurDyn and a 5F01M camera.A field experiment was also conducted on the machine under several factors:working speed(W),excavation depth(D),vibration intensity level(V),and conveyor inclination angle(N).The quadratic regression orthogonal rotating combination experiment tested four factors with five levels.The results of the non-load experiment showed that the lowest ratio of impurities was at the linear speed level(Q3,S5,O3)for the first and second separation conveyor and the side conveyor,respectively.The results of the field experiment showed that the optimal parameters were the working speed of 1.05 m/s,the digging depth of 180 mm,and the vibration forceⅡinclination angle on the screen surface of 22 degrees,which gave the highest potato lifting rate of 98.8%,and the bruising rate was 1.37%.The damage rate was 1.43%,superior to national industry standards.With its exceptional performance,the machine can effectively meet and solve the challenges of harvesting requirements,making it a valuable tool for the industry.展开更多
基金funded by the National Key R&D Program Project of Yunnan Provincial Department of Education Science(Grant No.2022YFD2002004).
文摘To address problems encountered in current potato harvesting machines in hilly and mountainous areas,such as potato damage,poor adaptability,low operational efficiency,and the inability of traditional harvesters to meet the requirements in these areas,a new potato harvester equipped with excavation and a multi-stage separation conveyor was developed by using design and simulation programs as an innovative way to identify the best operating factors.SolidWorks Software was used to design an excavation and a multi-stage separation conveyor.ANSYS Workbench machine static structure analyzed stress,strain,and deformation.The working process of soil and tuber separation was tested and kinematically analyzed by EDEM-RecurDyn and a 5F01M camera.A field experiment was also conducted on the machine under several factors:working speed(W),excavation depth(D),vibration intensity level(V),and conveyor inclination angle(N).The quadratic regression orthogonal rotating combination experiment tested four factors with five levels.The results of the non-load experiment showed that the lowest ratio of impurities was at the linear speed level(Q3,S5,O3)for the first and second separation conveyor and the side conveyor,respectively.The results of the field experiment showed that the optimal parameters were the working speed of 1.05 m/s,the digging depth of 180 mm,and the vibration forceⅡinclination angle on the screen surface of 22 degrees,which gave the highest potato lifting rate of 98.8%,and the bruising rate was 1.37%.The damage rate was 1.43%,superior to national industry standards.With its exceptional performance,the machine can effectively meet and solve the challenges of harvesting requirements,making it a valuable tool for the industry.
