Design And Experimental Research Of Seedling Box Mechanism For Corn Planting Bowel-seedling

The technology of corn bowl seedling transplanting is one of the main strategies for improving thelevel and quality of maize yield, the domestic maize transplanting mechanization degree is low, the transplanting machine for the semi automatic, operating speed is limited by the artificial seedling, transplanting seedling feeding speed, quality isn’t stable, directly restricts the popularization and Applicationof this technology; most of the foreign full automatic transplanting machine because of complex structure, high cost, influence factors and geographic conditions at home and abroad differences that cannot be used. In view of the above problems, the research group in maize breeding and transplanting technology as the basis, to high-speed rice transplanter characteristics as the basis, has developed a fullautomatic corn planting breeding technology based on planting pot seedling transplanting machine.In this paper, based on analysis of the development trend of foreign transplanter, summed up the problems of domestic semiautomatic transplanter seedling method, combined with the characteristics ofhigh speed rice transplanting machine feed mechanism, design a suitable for corn planting pot seedling transplanting machine automatic feeding mechanism. Automatic process of this mechanism can automatically fill the gaps, and continuous feeding, which has the advantages of simple structure, stable and reliable work, to make up for the domestic automatic transplanting machine can not get rid of shortcomings of artificial feeding seedling. In this paper, the main research contents and conclusions areas follows:(1)the design and research of feeding mechanismAccording to the physical properties of corn plant seedling quality of maize seedling bowl with agronomic requirements, use of the principle of mechanism of the existing various transverse, longitudinal moving box mechanism analysis, design of a corn plant meet the physical characteristics and qualityof seedling feeding automatic feeding mechanism of. The main functions include the screw shaft block type transverse feeding, fork ratchet type longitudinal fill the gaps. The establishment of the feeding mechanism kinematics model, kinematics analysis was carried out on the mechanism, analyzed andsummarized the structure parameters and the movement mechanism.(2)institutional rationality testUsing software of Solid Edge, CAD modeling for the parts feeding mechanism, in the3D environment of virtual prototype for simulation and analysis, summarized the mechanism motion characteristicparameters, calibration theory, rationality verification mechanism.(3) verification testThe prototype was built to test bench, with sandy loam and loam under maize seedling perpendicularity(lodging rate)as the target value,the seedling box horizontal angle, vertical angle of throwing seedlings, forward velocity as influence factors, the feeding mechanism of the two orthogonal revolving combination test plan. Analysis of the corn planting bowl seedling transplanting machine feeding mechanism of main parameters on soil conditions and effects of seedling perpendicularity quality by usingSPSS software, establish mathematical model for seedling mechanism and the main parameters of evaluation index, analysis of noise contribution calculation of each factor influencing factors interaction,an d use MATLAB to optimize the solve the optimal value of the model. The factors affecting the contribution for throwing seedings: dropping seedling vertical dip>forward velocity>horizontal angle of seedling box, ensure the optimalcombination parameter in seedling higher upright degree of seedling boxhorizontal angle22.5°, dropping seedling vertical dip13.14°, forward velocity0.57m/s,finally throughthe test results and theoretical error analysis of not more than10%, within the allowerd range.