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Influence of Occipital Chamfer Parameters Reaction Of the Ploughshare to Changes in The Buoyant Force and Plowing Depths

Кarim NuriyevTechnologies for Processing Agricultural Products Department, Gulistan State University, Gulistan, UzbekistanSherzod MuslimovFine Arts and Engineering Graphics Department, National Pedagogical University of Uzbekistan named after Nizami, Tashkent, UzbekistanMansur NuriyevInformation Technologies Department, Gulistan State University, Gulistan, UzbekistanO RakhmatovTechnologies for Processing Agricultural Products Department, Gulistan State University, Gulistan, UzbekistanMakhmudjon KodirovProfessional Education and Art Department, National Pedagogical University of Uzbekistan named after Nizami, Tashkent, UzbekistanYokub KuvandikovGeneral Technical Sciences Department, Jizzakh Polytechnical Institute, Djizakh, Uzbekistan 7Teaching Theory and Methodology Department, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers National Research University, Tashkent, UzbekistanMahliyo BakhronovaTeaching Theory and Methodology Department, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers National Research University, Tashkent, Uzbekistan
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Abstract

The paper notes that, based on theoretical studies, formulas have been derived to determine the forces that tend to push the ploughshare out of the soil, Rz, and the increasing traction resistance, Rx. It was revealed that the length of the occipital chamfer affects the increase in the pushing force of the ploughshare from the soil more intensively than its height. An increase in the length of the occipital chamfer compared to its height contributes to an increasein the pushing force by more than 5 times. Investigating the effect of the ploughing depth on the amount of the pushing force, it is noted that at a processing depth of 0.3 m, the occipital chamfer with a height of 3 mm, compared with a height of 2 mm, contributes to the growth of the pushing force 2 times more intensively. At the same time, an increase in the length of the occipital chamfer by 1 mm increases the pushing force at this depth to 0.9 kN. In addition, the study of changes in the forces Rz and Rx depending on the angle of the occipital chamfer showed that with an increase in the angle of the occipital chamfer, these forces decrease due to a decrease in the volume of crushed soil under the occiput. It was found that an increase in the height of the occipital chamfer during wear also results in higher Rz and Rh forces. And so, an increase in the height of the occipital chamfer from 1 mm to 2.9 mm increases the magnitude of these forces by about 6 times, and from 1 mm to 6 mm by 40 times. An analytical study of the dependence of ploughing depth on the parameters of the occipital chamfer, in particular its height, showed that an increase in its height during wear (blunting) leads to a sharp decrease in ploughing depth. It was found that in soils with a density of 16 kH/m3 and a ploughing depth of 0.3 m (at ϭ = ±0.02 m), the culling values of the occipital chamfer height are hs max = 2.2...2.5 mm. In softer soils with a density of 12 kH/m3, hs max =2.7...2.9 mm.

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