A whole row automatic pick-up device using air force to blow out vegetable plug seedlings
A whole row automatic pick-up device using air force to blow out vegetable plug seedlings
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DOI：
10.5424/sjar/2020184-17003
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发表时间：
2021-02
影响因子：
0.9
通讯作者：
H. Mao;Guoxin Ma;Luhua Han;Jianping Hu;Feng Gao;Yang Liu
中科院分区：
文献类型：
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作者：
H. Mao;Guoxin Ma;Luhua Han;Jianping Hu;Feng Gao;Yang Liu
研究目的：为解决目前针插式取苗对秧苗的损伤问题，研制了一种利用空气力吹出穴盘苗的整行自动取苗装置，研究地区：江苏省。采用新的空气松苗方法和新设计的末端执行器，显著降低了秧苗损伤率，提高了取苗成功率。根据计算结果制作了一种新型的捡拾器样机，并在室内实验室进行了实际生产条件下的性能试验，主要结果：计算表明，当空气喷嘴的气孔直径为3.5 mm，空气压力在0.146 ~ 0.315 MPa之间时，能够成功地将秧苗吹出。此外，夹持应变测试表明，新设计的末端执行器能够满足取苗的要求。正交试验结果表明，空气压力和含水量均对成功率有显著影响。当气压为0.4MPa、含水量为55%~ 60%、风量为100%时，移栽成功率达到96.64%，满足了当前移栽的要求。研究要点：本研究可为自动移栽技术提供一定的参考。
Aim of study: To develop a whole row automatic pick-up device using air force to blow out plug seedlings, to avoid the damage to seedlings that the current way of seedling picking by needle insertion induces.Area of study: Jiangsu Province, China.Material and methods: We designed a pick-up device which mainly consists of a seedling transporting device, a seedling air loosening device, a seedling clamping device and an automatic control system. The damage rate of seedling was significantly reduced and the success rate of seedling picking was increased by using the new seedling air loosening method and the new designed end-effectors. A prototype of the new pick-up device was produced according to the calculation results, and the performance tests were arranged under actual production conditions in an indoor laboratory.Main results: The calculation showed that when the diameter of the blowhole in air nozzle is 3.5 mm, and the air pressure is between 0.146 MPa and 0.315 MPa, the seedlings can be blown out successfully. Besides, the clamping strain test showed that the new designed end-effector can meet the requirements of seedling picking. The orthogonal test showed that both the air pressure and water content significantly affected the success ratio. The success ratio reached 96.64% when air pressure was 0.4 MPa, water content was 55%-60% and airflow rate was 100%, what meets the current requirements of transplanting.Research highlights: This research can provide some references for the automatic transplanting technology.