DOI: https://doi.org/10.32515/2414-3820.2021.51.117-125

Simulation of the Process of Single-grain Dosing by a Vacuum Pneumatic Mechanical Sowing Device

Mykhailo Chernovol, Mykola Sviren, Volodymyr Amosov

About the Authors

Mikhail Chernovol, Professor, Academician of the NAAS of Ukraine, Doctor in Technics (Doctor of Technics Sciences), Central Ukrainian National Technikal University, Kropyvnytskyi, Ukraine, ORCID ID: 0000-0003-3048-6833

Mykola Sviren, Professor, Doctor in Technics (Doctor of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: kaf_sgm_kntu@ukr.net, ORCID ID: 0000-0001-8877-8949

Volodymyr Amosov, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukrainian National Technical University, Kropyvnytskyi, Ukraine, e-mail: v_vas_a@ukr.net, ORCID ID: 0000-0002-0154-2886

Abstract

The aim of this work is to determine the influence of the surface shape and geometric parameters of the suction hole on the uniformity of seed distribution along the length of the row and determine its rational parameters. The use of mathematical modeling significantly speeds up the research process. An algorithm and a program in the Mathcad system have been developed for simulating the process of separating seeds from the cylindrical, conical and toroidal surfaces of the suction holes of a vacuum pneumomechanical sowing device and their fall to the bottom of the furrow. The algorithm is based on the results of previous studies by the authors. Its initial data is the simulation with the help of a generator of random numbers of spherical seed sizes, which are distributed according to the truncated normal law. Each seed undergoes a process of separation from the surface of the suction hole and free fall to the bottom of the furrow. Computer experiments are repeated, changing the average seed diameters, surface type and geometric parameters of the suction hole surface. As a result of statistical processing of the obtained vector of intervals between adjacent seeds at the bottom of the furrow, the mean sample value of the interval between seeds and the standard deviation of the intervals are determined. The last indicator is chosen by the criterion of uniformity of distribution of seeds on length of a line. Graphs of dependence of this indicator on the investigated parameters are constructed. As a result of the analysis of graphs it was found that the uniformity of seed distribution along the length of the row deteriorates with decreasing average seed diameter and increasing the radius of the suction hole. With a conical surface of the suction hole, the highest uniformity of seed distribution along the row length is achieved at a cone angle γ = 60 ° and a maximum diameter dmaxк=(1,7–2,0) rсем. The highest uniformity of seed distribution along the length of the row can be achieved with a toroidal surface of the suction hole, in particular, with a minimum radius of the radial section of the torus.

Keywords

mathematical model, single-grain dosing, pneumatic mechanical sowing device, suction hole, quality of seed distribution

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References

1. Shvarts, A.A., Shvarts, S.A. & Seyitdzhanov, D.T. (2012). Formalizatsiya matematicheskoy modeli apparata tochnogo vyseva. [Formalization of the mathematical model of the precision seeding apparatus.] Vestnik Kurskoy gosudarstvennoy sel'skokhozyaystvennoy akademii – Bulletin of the Kursk State Agricultural Academy,Vol. 4, 73-75. Retrieved from https://ur.booksc.org/book/36366073/5fbe74 [in Russian]

2. Zolotovskaya, Ye.V. & Mironov, A.S. (2015). Modelirovaniye parametrov vysevayushchego apparata ovoshchnoy seyalki. [Modeling the parameters of the seeding unit of a vegetable seeder.] Konstrujuvannja, vyrobnyctvo ta ekspluatacija silʹsʹkohospodarsʹkyx mashyn – Design, manufacture and operation of agricultural machinery, Vol. 45, 1, 78-86 [in Russian].

3. Polonetskiy, S.D. (1975). Statisticheskoye modelirovaniye urozhaynosti po tochnosti raspredeleniya semyan. [Statistical modeling of yield based on the accuracy of seed distribution]. Mekhanizatsiya i elektrifikatsiya sotsialisticheskogo sel'skogo khozyaystva – Mechanization and electrification of socialist agriculture, 5, 52–54 [in Russian].

4. Volokha, M.P. (2015). Tekhnolohichnyy kompleks mashyn dlya vyrobnytstva buryakiv tsukrovykh: shyryna mizhryadʹ. Teoriya, modelyuvannya, rezulʹtaty vyprobuvanʹ [Technological complex of machines for the production of sugar beets: row spacing. Theory, modeling, test results]. Kyyiv : TOV «Tsentr uchbovoyi literatury» [in Ukrainian].

5. Chichkin, V.P. (1984). Ovoshchnyye seyalki i kombinirovannyye agregaty: teoriya, konstruktsiya, raschet [Vegetable seeders and combined units: theory, design, calculation]. Kishinev: Shtiintsa, Retrieved from https://sejalki.ru/articles/elementi-teorii-protsessov-viseva-i/raspredelenie-semyan-seyalkami-tochnogo.html [in Russian].

6. Koshurnikov, A.F. (2015). Punktirnyy posev propashnykh kul'tur i formirovaniye gustoty nasazhdeniy : monografiya [Dotted sowing of row crops and the formation of plantation density]. Perm' : IPTS «Prokrost'» [in Russian].

7. Amosov, V.V. (2004). Analiz protsesu vidokremlennya nasinyn vid prysmoktuvalʹnykh otvoriv vakuumnoho pnevmomekhanichnoho vysivnoho aparata. [Analysis of the process of separating seeds from the suction holes of the vacuum pneumomechanical sowing machine]. Tekhnika v s.-h. vyrobnytstvi, haluzeve mashynobuduvannya, avtomatyzatsiya: Zb. nauk. pr. Kirovohrad. nats. tekhn. un-tu – Machinery in Agricultural Production, Industry Machine Building, Automation: Coll. Works of Kirovohrad State Technical University, Vol. 15, 438–444 [in Ukrainian].

8. Kherkhager, M. & Partol', KH. (2000). Matthcad 2000: a complete guide. (Ed.). Kiyev : Izdat. gruppa BHV [in Russian].

Citations

  1. Шварц А. А., Шварц С. А., Сейитджанов Д. Т. Формализация математической модели аппарата точного высева. Вестник Курской государственной сельскохозяйственной академии. 2012. Вып. 4. С.73–75. URL: https://ur.booksc.org/book/36366073/5fbe74 (дата обращения: 06.10.2021)
  2. Золотовская Е.В., Миронов А.С. Моделирование параметров высевающего аппарата овощной сеялки. Конструювання, виробництво та експлуатація сільськогосподарських машин: загальнодерж. міжвідомч. наук.-техн. зб. 2015. Вип. 45, ч.І. С.78-86.
  3. Полонецкий С.Д. Статистическое моделирование урожайности по точности распределения семян. Механизация и электрификация социалистического сельского хозяйства. 1975. №5. С.52–54.
  4. Волоха М. П. Технологічний комплекс машин для виробництва буряків цукрових: ширина міжрядь. Теорія, моделювання, результати випробувань : монографія. Київ : ТОВ «Центр учбової літератури», 2015. 220 с.
  5. Чичкин В.П. Овощные сеялки и комбинированные агрегаты: теория, конструкция, расчет. Кишинев: Штиинца, 1984. 392 c. URL: https://sejalki.ru/articles/elementi-teorii-protsessov-viseva-i/raspredelenie-semyan-seyalkami-tochnogo.html (дата обращения: 12.10.2021)
  6. Кошурников, А.Ф. Пунктирный посев пропашных культур и формирование густоты насаждений : монография. Пермь : ИПЦ «Прокрость», 2015. 218 с.
  7. Амосов В.В. Аналіз процесу відокремлення насінин від присмоктувальних отворів вакуумного пневмомеханічного висівного апарата. Техніка в с.-г. виробництві, галузеве машинобудування, автоматизація: зб. наук. пр. Кіровоград. нац. техн. ун-ту. 2004. Вип. 15. С.438–444.
  8. Херхагер М., Партоль Х. Маthcad 2000: полное руководство : пер. с нем. Киев : Издат. группа ВНV, 2000. 416 с.
Copyright (c) 2021 Mykhailo Chernovol, Mykola Sviren, Volodymyr Amosov