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Design and Testing of Reverse-Rotating Soil-Taking-Type Hole-Forming Device of Pot Seedling Transplanting Machine for Rapeseed

Author

Listed:
  • Wei Quan

    (College of Mechanical and Electrical, Hunan Agricultural University, Changsha 410128, China
    College of Orient Science & Technology, Hunan Agricultural University, Changsha 410128, China)

  • Mingliang Wu

    (College of Mechanical and Electrical, Hunan Agricultural University, Changsha 410128, China)

  • Zhenwei Dai

    (College of Mechanical and Electrical, Hunan Agricultural University, Changsha 410128, China)

  • Haifeng Luo

    (College of Mechanical and Electrical, Hunan Agricultural University, Changsha 410128, China)

  • Fanggang Shi

    (College of Mechanical and Electrical, Hunan Agricultural University, Changsha 410128, China)

Abstract

To address the problem whereby the size of the hole formed by the existing hole-forming device of hole-punching transplanters is significantly inconsistent with the theoretical size as it is impacted by the inserting and lifting methods, a scheme for eliminating the forward speed of the whole machine by the horizontal linear velocity of reverse rotation of the hole-forming mechanism is proposed to vertically insert and lift the hole-forming device in accordance with the working characteristics of hole-punching transplanting and the agronomic requirements of rapeseed transplanting. In addition, a novel type of reverse-rotating soil-taking-type hole-forming device for the pot seedling transplanting machine for rapeseed was developed. A test bench for the hole-forming device was set and its effectiveness was verified in the soil bin. It was found, from the test results, that, when the forward speed of the hole-forming device was between 0.25 m/s and 0.45 m/s, the average qualified rates of hole forming of the device were 95.2%, 94.0% and 93.3%, respectively; the average change rates of the hole size were 2.3%, 2.9% and 5.5%, respectively; and the average error between the theoretical value of effective depth and the experimental value was between 2.0% and 5.6%. The average angle between the hole-forming stage trajectory of the hole opener and the horizontal direction at different forward speeds was higher than 88.0°; the coefficient of variation was between 0.16% and 0.64%; the perpendicularity of the hole-forming operation was high; the change rates of soil porosity of the hole wall were between 8.2% and 9.3%; and the average soil heave degrees at the hole mouth after the completion of the hole-forming operation were 3.9%, 4.1% and 4.2%, respectively. The average soil stability rates of the hole wall were 91.9%, 91.2% and 91.0%, respectively. The different performances of the hole-forming device were confirmed to meet the requirements of rapeseed pot seedling transplanting. This study can provide a reference for the structural improvement and optimization of the hole-punching transplanter for rapeseed pot seedlings.

Suggested Citation

  • Wei Quan & Mingliang Wu & Zhenwei Dai & Haifeng Luo & Fanggang Shi, 2022. "Design and Testing of Reverse-Rotating Soil-Taking-Type Hole-Forming Device of Pot Seedling Transplanting Machine for Rapeseed," Agriculture, MDPI, vol. 12(3), pages 1-22, February.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:3:p:319-:d:755719
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    References listed on IDEAS

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    1. Krzysztof Orzech & Maria Wanic & Dariusz Załuski, 2021. "The Effects of Soil Compaction and Different Tillage Systems on the Bulk Density and Moisture Content of Soil and the Yields of Winter Oilseed Rape and Cereals," Agriculture, MDPI, vol. 11(7), pages 1-17, July.
    2. Wacław Jarecki, 2021. "The Reaction of Winter Oilseed Rape to Different Foliar Fertilization with Macro- and Micronutrients," Agriculture, MDPI, vol. 11(6), pages 1-15, June.
    3. Yu Chen & Yuming Cheng & Jun Chen & Zhiqi Zheng & Chenwei Hu & Jiayu Cao, 2021. "Design and Experiment of the Buckwheat Hill-Drop Planter Hole Forming Device," Agriculture, MDPI, vol. 11(11), pages 1-17, November.
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