Abstract

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Author(s):: DUN Guo-qiang1; YANG Yong-zhen1; DING Yu-cheng1; YE Jin1; YU Chun-ling1; DU Jia-xing3; GAO Zhi-yong2; SHI Xin-yu1; （1.College of Mechtronic Engineering, Northeast Forestry University, Harbin 150040, China； 2.College of Engineering and Technology, Northeast Forestry University, Harbin 150040, China； 3.Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi 154007, China）

Keywords:: Soybean; EDEM; Quick-return characteristics; Seed metering device; Bench test

Abstract:: In order to improve the operation efficiency of the swing seed plate feed for field plot experiment, the theoretical analysis method is used to analyze the diameter of the seed tray. It obtained the diameter of the hole, the swing frequency of the seeding disc, and the optimal parameter range. The quick return characteristics of the crank rocker mechanism were used in the design of the seed metering device. The EDEM simulation test method was used to verify the seeding performance of the seed metering device. The parameters were obtained by theoretical research, manufacturing prototypes and bench tests. The results showed that the average yield of the prototype bench test was 83.04%, the average value of the replay index was 2.26%, and the average value of the missed broadcast index was 14.7%. The results met the requirements of ‘Quality classification of medium tillage crop precision seeder’. In the design of the seed metering device, the quick return characteristic of the crank rocker mechanism was adopted, so that the seeding speed was fast when the seeding was performed. When the swinging speed was slow, the seeding was performed, thereby the stability of the seeding work was ensured and the operation effectiveness of the seed metering device was improved.