UDC 631.331
DOI 10.36461/NP.2023.66.2.012
LABORATORY STUDIES OF A SINGLE-DISC COULTER WITH EPICYCLOIDAL GROOVES
V.A. Sipunov, postgraduate student; V.V. Shumaev, Candidate of Engineering Sciences, Associate Professor
Federal State-Funded Educational Institution of higher education Penza State Agrarian University, Penza, Russia, t. (8-8412) 62-85-79, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The aim of the research was to improve the quality of sowing of spring wheat of the Zlata variety with a pneumatic seeder with a developed single-disc coulter with grooves in the form of an epicycloid, which allows to increase the uniformity of seed distribution over the sowing depth. The article reflects that the previously known designs of tined, single-disc and double-disc coulters have significant traction characteristics, cannot provide suitable copying of the field relief, forming an extensive furrow, which is not easy to close up. Aforementioned negatively affects the uniformity of the distribution of seeds of spring wheat of the Zlata variety both along the length of the row and the depth of sowing. The article proposes the design of a disc coulter, which has grooves in the form of an epicycloid contourwise and the results of laboratory studies. The regression equation of the second order is obtained, with the help of which the optimal values of the design parameters are determined, the cutout depth 𝑙 = 0.026...0.031 m (0.02655788 m); the number of cutouts 𝑞 = 10...11 pieces (10 pieces); the diameter of the coulter disc 𝑑 дд= 0.38 ...0.42 m (0.4170157 m), while the optimization parameter is ϭ (mean square deviation seed distribution by row depth) will be 1,9002923616.
Keywords: seeder, laboratory studies, single-disc coulter with epicycloidal grooves, sowing, seeds, soil.
