Design and parameter optimization of air-suction wheel type of seedmetering device with elastic pad for maize  

作　　者：Yuhuan Sun Junhai Guo Linrong Shi 

机构地区：[1]College of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou 730070,China [2]College of Mechanical and Electrical Engineering,Lanzhou University of Technology,Lanzhou 730070,China

出　　处：《International Journal of Agricultural and Biological Engineering》2024年第4期116-127,共12页国际农业与生物工程学报（英文）

基　　金：National Natural Science Foundation of China(Grant No.52065004,52365030);Lanzhou Municipal Young Talent Innovation Project(Grant No.2023-QN-146);Major Cultivation Project of Collegiate Scientific Research and Innovation Platform of Gansu Provincial Department of Education(2024CXPT-15);Special Project of Gansu Provincial Commissioner for Science and Technology(23CXGA0066);Gansu Agricultural Machinery R&D,Manufacturing and Promotion Application in 2023 Integrated Pilot Project(3-3).

摘　　要：Due to the maize growing agronomy requires ground covered by mulch film in the arid zones of the China Northwest region,the seed-metering device must roll over,break the film,and then throw seeds into soil.However,the uneven ground can cause the seed-metering device to shake,reducing seed-metering performance.To improve the adaptability for different shapes of maize seeds,a air suction wheel type seed-metering device with elastic pad was developed for better seed extraction and bump resistance.Firstly,the advantages and influencing factors of the elastic pad were analyzed through four processes of metering seeds.Secondly,the velocity distributions of six diameters of the suction hole are compared to determine the range with FLUENT.Then,a one-factor experiment was conducted to analyze the pattern of the factors(the seed layer height,the critical vacuum,the rotational speed of the seed disk,and the suction hole diameter)influencing the metering seed performance.Finally,a five-level quadratic rotation orthogonal design was used to optimize the parameters.Results show that the optimal values are that the seed layer height is 40 mm,and the critical vacuum is 2.85 kPa,and the rotational speed of the seed disk is 20.1 r/min.The validation experiment resulted in a 93.79%qualified index,with a 4.02%missing index and a 2.19%multiple index.

关 键 词：maize seeds seed-metering device with air suction elastic suction parameter optimization 

分 类 号：S223[农业科学—农业机械化工程]