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Harrow with screw-type operating tools: optimisation of design and process parameters

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dc.contributor.authorOlt, Jüri
dc.contributor.authorBulgakov, V.
dc.contributor.authorTrokhaniak, O.
dc.contributor.authorKlendii, M.
dc.contributor.authorGadzalo, Ia.
dc.contributor.authorPtashnik, M.
dc.contributor.authorTkachenko, M.
dc.contributor.departmentEstonian University of Life Sciences. Institute of Forestry and Engineeringeng
dc.date.accessioned2022-09-13T09:24:57Z
dc.date.available2022-09-13T09:24:57Z
dc.date.issued2022
dc.descriptionReceived: August 1st, 2022 ; Accepted: September 8th, 2022 ; Published: September 9th, 2022 ; Correspondence: jyri.olt@emu.eeeng
dc.description.abstractA new design of the harrow with screw-type operating tools is presented in the paper. It describes the theoretical and experimental investigations carried out for the purpose of optimising the design and process parameters of the harrow with screw-type operating tools. Such optimisation will provide for improving the soil fertility, when burying chaff and other plant residues as organic fertilisers into the soil during its tillage. On the basis of the results obtained in the comprehensive experimental investigations, new regression relations have been generated. These relations provide for determining the proportion of the field surface, where the after harvesting residues have been completely buried in the soil with the harrow with screw-type operating tools. It has been established that the dominant effect on the relative amount of the field surface area S with completely worked-in plant residues is produced by the soil tillage depth h, then follows the factor of the screw-type operating device battery approach angle β. The pitch distance Т of the screw-type operating device has the smallest effect. The results of the completed research prove that increasing the pitch distance Т of the screw-type operating tool from 0.18 m to 0.26 m results in the decrease in the area S of the field surface with the plant residues buried in the soil by 1.4%. An increase in the approach angle β from 20° to 40° results in the increase in the field surface area S with the plant residues completely worked into the soil by 5.6%. Increasing the soil tillage depth from 0.08 m to 0.12 m results in the increase in the above-mentioned surface S by 7.1%. The simultaneous action of the factors of the tillage depth h and the approach angle β results in the percentage of the surface S rising from 72% to 82%.eng
dc.identifier.issn2228-4907
dc.identifier.publicationAgronomy Research, 2022, vol. 20, no. 4, pp. 751–763eng
dc.identifier.urihttp://hdl.handle.net/10492/7769
dc.identifier.urihttps://doi.org/10.15159/ar.22.055
dc.publisherEstonian University of Life Scienceseng
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ; openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectdiametereng
dc.subjectdisc angleeng
dc.subjectenergy consumptioneng
dc.subjectharroweng
dc.subjectscrew-type operating tooleng
dc.subjectsoil tilling machineeng
dc.subjecttillage deptheng
dc.subjectarticleseng
dc.titleHarrow with screw-type operating tools: optimisation of design and process parameterseng
dc.typeArticleeng

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2022, Vol. 20, No. 4