DOI: https://doi.org/10.32515/2414-3820.2022.52.108-117

Determination of Parameters and Efficiency of Additional Operating Parts of Deep Tillers

Serhii Leshchenko, Vasyl Salo, Olexiy Vasylkovskyi, Dmytro Petrenko

About the Authors

Serhii Leshchenko, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine,e-mail: serafsgm@ukr.net, ORCID ID: 0000-0001-9339-4691

Vasyl Salo, Professor, Doctor in Technics (Doctor of Technic Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, e-mail: salovm@ukr.net, ORCID ID: 0000-0003-2263-6002

Olexiy Vasylkovskyi, Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, e-mail: olexa74@ukr.net, ORCID ID: 0000-0001-9590-742X

Dmytro Petrenko, Associate Professor, PhD in Technics (Candidate of Technics Sciences), Central Ukraіnian National Technical University, Kropyvnytskyi, Ukraine, e-mail: petrenko.dimitriy@gmail.com, ORCID ID: 0000-0003-4565-9653

Abstract

The article presents an overview and analysis of existing additional operating parts of combined deep tillers of serial machines. It was established that the issue of assessing the effectiveness of additional operating parts of deep tillers and the search for their rational structural and technological parameters is insufficiently studied and needs practical solution. The most versatile operating part for high-quality work of deep tillers can be a paired toothed roller. Having studied its design parameters and operating modes, it is possible to get clear recommendations regarding its use. An improved design of the Tandem Spiked toothed roller type with mechanical adjustment is proposed, as such rollers have a much simpler shape of teeth and a smaller cross-section of each tooth. The dependences for the calculation of certain design parameters of the roller, namely its diameter, length and coefficient of volume deformation of the soil, are given based on the fact that the roller performs two functions – compaction of the lower layers of the soil and crushing of clods and intensive mixing of the upper horizons. To determine the rolling force on the soil surface, we use the relationship that includes the weight of the roller, the volume deformation coefficient of the soil, the grip width of the roller and its diameter. Field studies to assess the efficiency of paired toothed rollers ere carried out. For the effective operation of combined deep tillers of the soil, it is necessary to use additional operating parts, which should additionally grind large particles and partially mix and distribute plant residues. It is most expedient to use paired toothed rollers with mechanical adjustment as additional operating parts under difficult working conditions. At the stage of substantiating the design parameters of paired toothed rollers, it is enough to take into account the required angle of the soil roller's girth and the average value of the soil deformation depth. This will allow getting actual value of the working diameter of the roller and calculate the force of the roller rolling over the soil surface. During field studies of the operation of combined deep tillers with a paired toothed roller, it was established that when working with two toothed rollers at a working speed of 7.2...8.2 km/h, the qualitative indicator of soil crushing is at the level of 70...75%, which significantly exceeds the qualitative indicators of the work of foreign machines of a similar design under the same operating conditions.

Keywords

additional operating parts, paired toothed roller, parameters of the roller, operating efficiency, coefficient of soil crushing

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References

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Copyright (c) 2022 Serhii Leshchenko, Vasyl Salo, Olexiy Vasylkovskyi, Dmytro Petrenko