Design And Optimization Of Trajectory And Posture For The Corn Pot Seeding Transplanting Mechanism

With the increasing quantity demand of corn planting, how to improve the yield of corn was the chief problem to the broad masses of farmers for planting corn. Because of transplanting could effectively extend the crop growth cycle, transplanting technology could obviously greatly enhance production and give farmers more income. The low degree of mechanization was the problem of mainly domestic transplanting mechanisms. They needed to artificial feed seedlings and lead to labor intensity of farmers. And foreign transplanting mechanisms are complex, high technical difficulty and expensive operation. They ware not suitable for the needs of farmers in China. In recent years, with the market demand and the government policy encouragement, related research institutions ware actively developing and developed corn transplanting machine. But there machines separated from the set of institutions, still needed to complete seedling and planting with two mechanisms. There structures ware more complex. Therefore, studied and compared for the corn pot seedling transplanting mechanism with domestic and foreign transplanting mechanisms, we developed a new type of corn pot seedling transplanting machine. In the basis of the single planet carrier transplanting machine, we make further innovation-a complete set of transplanting arm with double differential gear planetary frame structure. It had higher regulation degrees of freedom of trajectory and posture. The machine can use one planetary gear to complete two actions that seedlings and transplanting. At the same time, it can satisfy the accuracy of taking seedlings and distance of corn planting requirements.The main research content of this article is as follows:1) Analysis the driving mode and working principle of planetary gear train of existing pot seedling transplanting mechanisms. We developed a non-circular gear planetary wheel pot seedling transplanting mechanism witch taking and carrying of one body. Its trajectory and posture are more flexible and more diversified. So that it can be designed to adapt to a variety of trajectory for transplanting mechanism.2) Through the theoretical calculation, based on MATLAB software, we independent program optimization software. Inverse seeking part of pitch curve of non-circular gear through optimal trajectory witch straight in and out of the pot seedling dish and take seedling claw in seedling dish with no oscillation. Seeking the remainder pitch curve with setting the parameters adjustment in using the human-computer interaction, and designing the trajectory and posture which can meet the needs of work.3) Through the related parameters of the software, based on UG software, we construct and design the transplanting mechanism and its modeling, and assemble the virtual prototype. Import the modeling in ADAMS software with simulation movement. And compare the trajectory of simulation with the theory trajectory of software calculation.4)According to the model parameters,based on AutoCAD software, we design parts and draw drawings. According to the drawing processing prototype, we take the assembly and prototype test. Comparing with different rotational speed, 40 to 100 r/min, we analyze the overall running stability of organization.5) Comparing with experimental data and theoretical data, as well as the arising problems of pick up enough push rod clamping of seedlings with the test analysis of institutions, we put forward improvement measures.