Ploughing Tractor Lateral Withdrawal Model

Troyanovskaya, Irina; Pozin, B. M; Noskov, N. K

doi:10.1016/j.proeng.2017.10.674

Cited by 10 publications

(8 citation statements)

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“…Thus, the general dynamics of the MTU as a complex technical system is described by a total of four second-order differential equations ( 4), ( 5), (6). The first two of these equations ( 5) describe the translational motion of the system in the direction of the received coordinate axes Х and У.…”

Section: Methodsmentioning

confidence: 99%

“…In work [5] experimental researches of parameters of the plow unit are made according to the "push-pull" scheme on the basis of the HTZ-16131 tractor, from a position of satisfactory stability of its movement. In [6], an analysis of the stability of the tractor with a plow is also given, when an additional moment of decomposition acts on the plow, under the action of which the tractor can move away from the straightness of the movement. The paper presents a mathematical model of the tractor deflection due to external eccentric load on the hook, which allows to calculate the maximum value of the shear force.…”

Section: Introductionmentioning

confidence: 99%

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Development of system for stabilizing movement of power unit with rear mounted mower

Savchenko

Achkevych

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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The article is devoted to solving the problems of increasing the stability of motion of a power unit with a rear mounted mower. An analytical review of methods and means of ensuring the stability of the header movement of the power unit is given. Variational principles of mechanics are applied in the study of the dynamics of motion of a power unit. The regularity of the oscillatory angular displacement of the unit relative to the power unit has been established. An automated system is proposed for ensuring the stability of the movement of a power unit with a rear mounted mower. This system can be developed on the basis of the synthesis of mechanical and hydraulic subsystems with the activation of the drive to the field wheel. Equation describing the transmission ratio provides efficient automatic torque control on the field wheel of the implement. A decrease in the coefficient reduces the response of the system to external disturbances from resistance forces and unit deflection, while an increase can lead to an undesirable oscillatory mode of operation. It was found that the trajectories of movement of both serial and experimental units are characterized by the presence of constant components of deviations. According to Student's criteria, the introduction of an active drive to the field wheel reduces the trend value from 7.36 to 5.31. It has been substantiated that the active drive on the field wheel of the unit stabilizes the movement of the power unit. The root mean square deviation of the trajectory of movement decreases from 4.9 cm to 4.4 cm, and the angle of deviation of the trajectory from the straight-line decreases on average by 10°. According to the results of testing the experimental power unit using an active drive on the field wheel of the unit, it increases the productivity by 6% with a decrease in the fuel consumption of about 9%.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of system for stabilizing movement of power unit with rear mounted mower

Savchenko

Achkevych

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

View full text Add to dashboard Cite

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“…It is known that currently cotton is grown mainly between rows from 60 to 90 cm. At the same time, two-and four-row machines are used for sowing seeds, row spacing, and harvesting [1,2,3,4].…”

Section: Introductionmentioning

confidence: 99%

Course stability models of a wide-width tractor unit

Soliev

Tukhtabayev

Xidirov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The purpose of the research is to provide for solving dynamic problems of course stability of a wide-width sowing and row-crop-tractor unit. For constructing a computational scheme for the generated problem applied the central finite-difference method with a second-order accuracy. When developing a machine algorithm, the fractional grid steps are converted by formulas and a vector equation is obtained. The results of scientific and practical research and testing to determine and evaluate performance of machine-tractor units (MTU) consisting of inter row spacing sowing and cultivators with four-wheel tractors were obtained. Studies on appropriateness of increasing coverage area of cotton units based on field size have shown that the shift productivity of eight-row units at planting was lower than that of four-row units when the field area was less than 3 hectares. When the field area was 3 hectares or more, the MTU’s productivity increased by 32–34%. A similar trend has been observed in the inter-row processing units. Field experiments have shown that it is advisable to maintain the existing four-row machine system on the basis of existing energy vehicles for 27-30% of cotton fields. Cauchy problem for finite-difference equations of dynamic problems of course stability of a wide-cut sowing and tilled-tractor unit was formed, in the form of algebraic equations. As a result, it was possible to build 6-, 8- and 10-row cultivator units based on four-wheel tractors.

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“…Внешние силы со стороны рабочего орудия при выполнении технологического цикла могут приводить к не-запланированному отклонению машины от заданной траектории 1 . Такое отклонение принято называть пассивным или неуправляемым уводом [11,12]. Он представляет собой совокупность управляемого действиями водителя движения и не управляемого водителем (пассивного) сдвига под действием внешних сил [13].…”

Section: Introductionunclassified

Experimental studies of the uncontrolled shift of the bulldozer

Troyanovskaya

Zhakov

2022

Vestn. SibADI

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Introduction. External forces from the working body of a road-building machine sometimes lead to its uncontrolled deviation from a given trajectory when performing a technological cycle. In this case, there is a clear dependence of the magnitude of the shift force on its direction. The purpose of experimental studies was to determine the values of the limiting shift force for its various directions.Materials and methods. The experimental tests were carried out on the example of a 10-ton caterpillar bulldozer manufactured by the Chelyabinsk Tractor Plant. The shift was carried out by the action of an external force applied to the edge of the dump in various directions. The external force was recorded on an oscillogram.Results. The shift began with an external force equal to the adhesion limit, provided that the line of action of the external force passed through the center of pressure. The shift begins at much lower values of the external force when the line of action of the external force deviates from the center of pressure. The result of the experiment was the construction of a hodograph of the limiting shift force.Conclusion. The nature of the change in the external force during translational and rotational shear was fundamentally different. It has been experimentally confirmed that the more the direction of the shear force deviates from the center of pressure of the machine, the smaller the value of the external force can lead to an uncontrolled shear.

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Ploughing Tractor Lateral Withdrawal Model

Cited by 10 publications

References 0 publications

Development of system for stabilizing movement of power unit with rear mounted mower

Development of system for stabilizing movement of power unit with rear mounted mower

Course stability models of a wide-width tractor unit

Experimental studies of the uncontrolled shift of the bulldozer

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