| China is a large agricultural country with a large population,the development of agricultural mechanization makes perfect sense for China.High quality and strong vegetable seedlings can be obtained through vegetable seedling cultivation and transplanting technology,which makes vegetable seeds ripe earlier and improves the ripeness rate,increasing the multiple planting index of vegetables and facilitate centralized management.Therefore this study designs and provides a planting mechanism.The planting mechanism is not only simple and easy to operate but also can meet the requirements of vegetable transplanting by adjusting the parameters of the mechanism.From the perspective of cost input,it can achieve the expectation of reducing labor intensity and saving labor costs at the same time.(1)The knowledge of the natural environment,temperature,climate,and other requirements for vegetable planting is absorbed by reading a large amount of reference literature about vegetable growing environment and conditions.Moreover,after mastering the operation principle and mechanism of transplanting,this paper analyzes the development status of vegetable transplanting machines and compares the domestic and foreign research status,which lays a foundation for the main research content.(2)According to the theory of "effective zero speed transplanting",the "γ" trajectory is the best trajectory that can meet the agronomic requirements of the planting mechanism.A model was established through ADAMS to test the rationality of the planting mechanism proposed in this study,and the movement trajectory of the planting mechanism is preliminarily studied.While through static simulation analysis by ANSYS.(3)In this study,the mathematical model of the planting mechanism was constructed.By writing the Matlab simulation program,the GUI auxiliary analysis interface is made.The influence of each parameter on the moving track of planting point of the planting mechanism is discussed,and then the optimal parameter curve of the main influencing parameters is obtained.According to the main influence parameter and orthogonal experimental analysis,the contribution rate of the main influence parameters to the tangent angle ε and planting depth h of the soil entry point and excavation point is obtained,and then the better trajectory parameters to meet the agronomic requirements are obtained.(4)By using the ADAMS to verifying rationality of institutional design,the kinematics simulation of the optimized transplanting machine planting mechanism is carried out,the velocity and acceleration curves of the center of mass of each member of the optimized in the direction of the X axis and the Y axis planting mechanism are obtained.Through the model experiment verification of the transplanting mechanism,the trajectory of the transplanting mechanism is compared between the simulation and the experimental transplanter,and the trajectory of the simulation and the model verification is basically consistent,which shows that the design optimization is reasonable,the simulation is reliable,and has a good reference value for the design of the actual mechanism. |
