Justification of the desigN of the Paw of a Row-Row Cultivator with a Replaceable String Blade
DOI:
https://doi.org/10.32515/2664-262X.2026.14(45).87-98Keywords:
row cultivator, cultivator paw, crop care, inter-row cultivationAbstract
The paper considers the issue of increasing the efficiency of the working bodies of row-type cultivators by improving the design of the cultivator paw. The features of the interaction of the cultivator working bodies with the soil environment are analyzed and the main factors that affect the magnitude of the traction resistance during inter-row tillage are determined. The design of the row-type cultivator paw with a chisel-shaped riser and a string steel blade stretched in a horizontal plane is proposed. This design provides a reduction in the contact area of the working body with the soil and improves the conditions for self-cleaning of the working surface.
To assess the energy performance of the improved working body, a mathematical model for determining the traction resistance of the cultivator paw has been developed. The model takes into account the total effect of the resistance of the chisel-shaped riser, the resistance of the string steel blade, as well as the speed component that arises during the movement of the working body in the soil. Based on the proposed model, mathematical modeling of the paw operation process was carried out and the influence of the main design and technological parameters on the value of traction resistance was studied. An analysis of the dependence of traction resistance on the depth of cultivation, soil density, angle of attack of the string blade, thickness of the string and speed of movement of the unit was performed. According to the results of calculations, graphical dependencies were constructed that characterize the change in traction resistance in the studied ranges of parameters. It was established that the greatest influence on the value of traction resistance is exerted by the depth of cultivation and soil density, while an increase in the angle of attack of the string blade contributes to a decrease in the resistance of the working body.
Based on the conducted studies, rational design parameters and operating modes of the improved cultivator paw were determined, which ensure a decrease in the energy costs of the technological process. The results obtained can be used in the design and improvement of the working bodies of soil tillage machines for inter-row cultivation of row crops.
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Copyright (c) 2026 Viktor Deikun, Dmytro Artemenko, Roman Moskalchenko
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