Abstract
The development of cabbage harvester is mature aboard while related research and applications in China are still in its early stage. At present, nearly all harvests of cabbage are manually completed in China. Therefore, the mechanization of cabbage harvest has become a matter of great urgency. In order to realize the cabbage harvester obtaining the cabbages successfully during the harvesting process, a cabbage pulling-out test bed was designed. By analyzing the working principle of the test bed and the force-bearing status at the time of pulling, the key parts structure of the test bed was determined. The author investigated the optimization test of the working parameters of a cabbage pulling-out harvester through the following procedures: selecting the rotational speed of screw pole, spacing between two screw poles, analyzjng the angle between the screw pole and the ground as influencing factors, determining the pulling-out percentage as the objective function, and adopting the quadratic orthogonal regressive rotation test as the method. The pulling-out percentage of cabbage reached 95% or higher when the angle between the screw pole and the ground is 15°, and the spacing between two screw poles was 50–70 mm while the rotational speed of screw pole was 180 r/min. The research findings provide a theoretical basis for the modified design of the cabbage harvester.
