Design and test of double-shafts seedling killing machine for potato in hilly areas

In view of the unique characteristics of the traditional potato seedling killing machine, such as poor seedling killing effect, excessive seedling residue during seedling killing, uneven stubble height, etc. in hilly area, the structural design of the potato seedling killing machine is optimized and the three-dimensional simulation software static analysis is conducted. A potato double-shafts seedling killing machine was developed for hilly areas. The machine adopts double shafts to work together, can realize the functions of seedling picking, seedling breaking, seedling smashing and the like, and adopts an imitation ridge type seedling picking blade, and can be used for picking up the seedling at the lower ridge and crushing the seedling after high-speed operation. The machine can effectively improve the potato seedling killing efficiency, has good seedling killing performance, can meet the agronomic requirements of potato planting in hilly areas, has the characteristics of compact structure, good flexibility, working stably, simple maintenance and the like, and can finish the cleaning work of potato seedlings at one time. Through the field experiment of the prototype, it can reach the technical standards of 90.3% qualified rate of broken stems and leaves, 5.3% of missing rate, 0.5% damaging rate of the potato and 118 mm stubble height, which can meet the requirements of relevant function and performance. The results can be used for reference to improve the technical level of potato seedling killing in hilly area