Design and test of 2ZYM-2 potted vegetable seedlings transplanting machine

文献类型： 外文期刊

第一作者： Jin, Xin

作者： Jin, Xin;Ji, Jiangtao;Li, Mingyong;Jin, Xin;Cheng, Qun;Ji, Jiangtao;Zhao, Bo

作者机构：

关键词： seedling transplanting; planting mechanism; digital speckle; parameter optimization; test analysis

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING （ 影响因子：2.032； 五年影响因子：2.137 ）

ISSN： 1934-6344

年卷期： 2020 年 13 卷 1 期

页码：

收录情况： SCI

摘要： In order to improve the efficiency and quality of transplanting vegetables in dry land, based on the seedling technology, transplanting effect and analysis of the planting process, a potted vegetable seedlings transplanting machine was designed. It mainly comprised rotary disc type feeding mechanism, five-bar duckbill type planting mechanism (simulated duckbill mechanism, disc cam, connecting rod, crank, fork, cable) and power transmission system. Based on the physical parameters of the seedlings and design requirements, it was determined that the diameter of the duckbill was D=90 mm, the opening and closing angle was 25 degrees, and the taper angle was 17 degrees. A test bench with adjustable parameters was built by analyzing the structure of the planting mechanism and the motion of the working process. The digital speckle technique was used to optimize the parameters, so that the length of the crankshaft I was S-1=100 mm, the length of the crankshaft II was S-2=80 mm, the length of the connecting rod I was S-3=140 mm, the length of the connecting rod II was S-4=260 mm, the length of rod to connecting the rack was S-6=314 mm, and the height of planting track was H=450 mm. According to the above parameters and the control requirements of the duckbill mechanism, the cam stroke was determined to be S=15 mm. And the initial phase difference between the two cams was 180 degrees. The experiment was carried out with pepper seedlings as transplanting objects. The results showed that when the planting frequency was 50-70 plants/min, the seedling upright rate was 93%-91.1%, the planting depth qualified rate was 96%-92%. The leakage rate was 0-0.26%, the variation coefficient of plant spacing was 0.37%-0.67%, the injury rate was 0%, and the mechanical damage degree of the mining surface was 2.43-3.77 mm/m(2). The machine can effectively improve the quality of transplanting, which can meet the production needs and design requirements of the mechanism.

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