Optimal Design And Experiment Research Of Type Automatic Clamp Seedling Transplanting Machine On Dryland Potted Seedlings Trans Planting

Compared to the sowing of dryland crops, Transplanting have many advantages. Transplant ing can guarantee the survival rate of seedlings, avoid the influence of climate, as well as pests and diseases, and extend the growth period of crops, improve the usage rate per unit area of land, and crops with high yield and stable yield. In 2011, our annual seedling area reached 15 million hm2, corresponding transplanting machine required 1.5 million sets. In addition, the rising labor costs in China in recent years, farming population continues to decline. So the automatic transplanting of dryland crops not only to accelerate the application of seedling cultivation and can bring tremendous overall economic efficiency.At present, semi-automatic transplanting machine that fetching seeding by man and transplanting by machine is mature. However, automatic transplanting machine is still in experimental stages of development, it is by transplanting machine to complete the picking seedling, dropping seedling planting. Study development status of plug seedling transplanter about domestic and foreign, transplanting can be divided into two categories; The first, with independent mechanical and electrical systems, or industrial robot technology, used in automated assembly line seedling transplanting in greenhouse. Second, by implementing organizations taking action of seedlings and the seedlings, at the request of specific trajectory and attitude, Complete the picking seedling with single strains pulling seedlings, in which the most representative non-circular gear of Rotary transplanting mechanism. In addition, the way to take seedling that clip stem type compared clip bowl to low of the requirements for the track. This program is turning non-circular gear planetary mechanism, out of the plug seedlings and seedlings into ravine.This main research contents are as follows:1) Analysis of the "8"-shaped trajectory, which applied to a clip of rice seedling transplanting, based the dryland seedling transplant Agency’s trajectory planning work automatically, On this basis, completed the trajectory planning of dryland seedling transplanting body automatically.2) Through analysis of non-circular gear planetary gear mechanism, establishment of dryland seedling clip of seedling type automatic transplanting machine model.3) Based on the kinematics of transplanting machine model, and combine MATLAB visualization program, completed a reverse optimization design software of transplanting mechanism; and on this basis to obtain a set can be used for optimization of structural design parameters of transplanting mechanism, as well as meet the requirements of transplanting trajectory and attitude.4) Based on design parameters of transplant, completed the structure design of transplanting mechanism, established the prototype model in Pro/e in a three dimensional virtual environment, and kinematic simulation functionality of ADAMS software, verify the validity of the theoretical model and reasonable structure design.5) Production of physical prototypes, complete Assembly, commissioning work on the test bench, that developed by the research group; compared the actual trajectory and theoretical track what using high-speed photography, otherwise complete the picking seedling test for snapdragon plug seedlings.