1.Wuxi Lixin Branch of Jiangsu Union Technical Institute, Wuxi, Jiansu 214000, China; 2.School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 3.Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education and Jiangsu Province, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 4.College of Forest Resource and Environment, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; 5.Logistics Service Group, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Abstract:In order to study the effect of blade structure parameters on the cutting efficiency and cutting performance of straw in the shredder, the discrete element method and EDEM software were used to set up the simulation model for cutting the tomato cane straw in the cutting machine. The numerical simulation of cutting energy consumption, cutting force and cutting effect was carried out, and the results were comparied with the test results. The results show that compared with the equal slip angle flat blade and the ordinary blade, the equal slip angle sawtooth blade has less force in the cutting process, the force is more uniform, the fluctuation is smaller, the cutting energy consumption is the lowest, the cutting efficiency is the highest, the cutting time is the shortest, the cutting effect is better and the advantage is obvious. When cutting the tomato cane straw, the cutting force, the energy consumed, the consumed cutting energy, and the cutting time of the 40 equal slip angle sawtooth blade are lower than those of 45° same blade, and its cutting efficiency is higher and cutting effect is better. The results provide a theoretical basis for the selection of tomato straw cutting blades and their structural parameters.
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