Design And Experimental Study On The Driven Micro-cultivator For Tea Garden

Tea plantation is a long history of management and the rotary tillage is to ensure the smooth growth of moderate tea,an important step to improve the yield of tea.In order to solve the existing soil compaction problem in tea garden,reduce labor intensity and alleviate the loss of rural labor,this paper designs driven micro-cultivator for hilly tea plantation.This study reviewed a large number of literature and combined with the characteristics of the soil environment in the hilly region and tea garden Related Agronomic requirements.The specific research contents are shown as follows:According to the landform,soil characteristics and related agronomic requirements of tea plantation in hilly area,this paper finally determines the overall design scheme on the basis of consulting a large amount of relevant literature and field investigation.Then the paper calculates the power consumption of the micro-cultivator,and selects the appropriate supporting power.Finally,this paper designs the whole transmission system and key parts and the theoretical design of the whole machine is completed.In this paper,the mechanical analysis of the whole machine and the working parts of the micro-cultivator were carried out.Then the rotary blade stress and strain analysis using finite element method and ANSYS software to find blade stress and strain maximum.And check the rotary blade axis,to provide reference for the selection of working parts.Finally,this paper carried out the kinematics analysis of the whole machine and the working parts of the micro-cultivator.In order to reduce the weight of transmission,improve the bearing capacity and reduce the cost,we set up a mathematical model of transmission optimization,including the selection of design variables,the establishment of the objective function,and the establishment of constraints in this paper.Then using the SGA and NSGA-? algorithm to optimize the mathematical model of the micro-cultivator transmission to find the optimal solution,and as a design criterion.Finally,the better transmission performance and farming efficiency were obtained.In order to obtain better soil crushing effect and verify the performance of the the micro-cultivator,the field performance test was carried out in this paper according to the "national standard" test method of mechanical rotary tillage.Then the orthogonal experiment of 3 factors and 3 levels was set up to explore the influence of factors on theindex,so as to select the optimal working parameters.