Modeling of Working Processes of an Adjustable APN Type PVC 1.85 Taking Into Account Parametric Oscillations

Shargorodskiy, Serhiy; Rutkevych, Volodymyr; Zakrevskyi, Vadym

doi:10.32515/2664-262x.2021.4(35).33-43

Cited by 2 publications

(3 citation statements)

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“…При цьому стартова доза змінюється в межах від 8 до 15 % від основної дози. Використання в агропромисловому комплексі АПК України ресурсозберігаючих технології точного землеробства дозволить забезпечити керування виробничими процесами за рахунок інформаційних технологій, роботизованих та автоматизованих систем, що дозволить вивести вітчизняні сільськогосподарські підприємства на більш новий рівень [13,14].…”

Section: рис 1 різниця між внесеною дозою добрив та реальною потребою...unclassified

Development of the Sowing System of the Sowing Complex Forinternal-Soil Differentiated Mineral Fertilizer With Simultaneous Sowing of Cereal

РУТКЕВИЧ,

ОСТАПЕНКО

2024

Вісник Хмельницького національного університету. Серія: Технічн

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The issue of increasing the effectiveness of post-sowing intra-soil differentiated application of the main and starting dose of granular mineral fertilizers in the system of precision agriculture is considered. The need to use differential application of granular mineral fertilizer and machines that ensure high-quality performance of this technological process, taking into account the heterogeneity of the content of nutrients in the soil in certain areas of the field, is indicated. It is also indicated the need to develop and introduce into production highly accurate automated information technologies based on the use of high-performance means of mechanization. The indicated shortcomings of modern seeding machines: lack of adaptability for simultaneous differentiated introduction of the main and starting dose, as a result of which they lack highly adapted dispensers, appropriate control and management systems. The construction and technological scheme of the seeding complex is proposed and the pneumatic seeding system of this unit is developed for post-sowing intra-soil differentiated application of the main and starting dose of granular mineral fertilizers in the precision farming system. The proposed seeding complex will make it possible to eliminate the excessive application of mineral fertilizers, which can cause an increase in the activation of microbiological processes in the soil and have negative ecological consequences, leading to the deterioration of the physic-chemical and biological properties of the soil. The use of resource-saving technologies of precision agriculture in the agro-industrial complex of Ukraine will allow to ensure the management of production processes at the expense of information technologies, robotic and automated systems, which will allow to bring domestic agricultural enterprises to a new level.

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Section: рис 1 різниця між внесеною дозою добрив та реальною потребою...unclassified

Development of the Sowing System of the Sowing Complex Forinternal-Soil Differentiated Mineral Fertilizer With Simultaneous Sowing of Cereal

РУТКЕВИЧ,

ОСТАПЕНКО

2024

Вісник Хмельницького національного університету. Серія: Технічн

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“…The study of special literature [5][6][7][8][9][10] shows that HGST-90 and its analogues are used on various types of domestic agricultural and construction and road machinery: ACROS harvesters of the 530, 535, 560, 580 model series, KZS-9-1 «Slavutich», «VECTOR-410, 420», SK-5M-1 (with "Kherson Combines" driving bridge); asphalt pavers SD-404, DS-504/506.…”

Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

“…The article provides calculation schemes, a mathematical model of a hydraulic drive for the study of wave processes, and the results of studies that characterize the parameters of the hydraulic system depending on the length of the hydraulic lines. In [7], the tilt control system of the axial rotarypiston pump PVC-1.63, which is used to drive the active working bodies of agricultural machines, was studied. As a result, the pulsating nature of the combined force of the pistons of the cylinder block on the pump cradle was revealed, which causes a torque directed to the rotation of the cradle relative to the trunnion.…”

Section: Fig 2 Schematic Diagram Of the Hydrostatic Transmission Of T...mentioning

confidence: 99%

Study of the Trajectory of Movement of the Reduced Plunger Pressure Force on the Axial Piston Pump Cradle

Shargorodskiy,

Rutkevych,

Sharhorodska

2023

Engineering, Energy, Transport Aic

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Today, the hydraulic drive is increasingly used in agricultural machinery as motion drives, drives of working bodies, and drives of control systems. The power source of this type of drives is pumping stations based on piston-type pumps. This type of pump units has a number of advantages and disadvantages compared to gear pumps. The advantages include power, reliability, higher efficiency, the ability to smoothly regulate the flow of working fluid, and the disadvantages include increased requirements for the degree of purification of working fluids. The article reviews known hydraulic schemes of agricultural machines, analyzes them, and identifies their advantages and disadvantages. One of the elements of these hydraulic systems is the pump supply control system depending on the load on the working bodies of the hydraulic system elements. The correct choice of the parameters of the elements of this system has a significant impact on the quality of its work as a whole. In order to study the influence of system parameters, the structure and principle of operation of the system for regulating the supply of the working liquid of the axial-piston pump are described, the coordinates of the movement of the center of the reduced force from the action of the plunger pairs on the cradle of the control system for the supply of the working liquid are calculated. The trajectory of its movement along the plane of the feeding adjustment cradle is determined. The proposed dependencies make it possible to determine the magnitude of the moment acting on the cradle depending on the magnitude of the eccentricity. it was found that the point of application of the combined force to the end of the cradle moves along a loop-like trajectory, symmetrical to the axis, parallel to the axis of rotation of the cradle. At the same time, the magnitude of the moment of the combined force acting on the cradle has a cyclic nature, the periodicity of which is determined by the angle of rotation of the cylinder block by a value equal to the angular distance between adjacent cylinders. The frequency of fluctuations of the moment of the combined force when rotating the cylinder block of the PVC 1.63 pump with a frequency of 1500 rpm is 450 Hz, which requires the development of measures to eliminate their negative impact on the operation of the pump supply regulator. The moment of combined forces acting on the cradle from the side of the cylinder block depends on the pressure in the pump discharge line and the angle of rotation of the cylinder block. At a nominal pressure of 25 MPa, the range of fluctuations of the combined force moment acting on the PVC 1.63 pump cradle reaches 290 Nm. If the axes of the cylinder block and the trunnion of the cradle are in the same plane, the moment of combined forces acting on the cradle will change symmetrically relative to the axis of rotation of the cradle and periodically cause it to deviate in opposite directions. This nature of the load of the cradle interferes with the process of adjusting the angle of its inclination and, accordingly, the working volume of the pump. In order to reduce the negative impact of the moment of the combined force on the quality of the regulation of the supply of the working fluid of the PVC 1.63 pump, it is recommended to introduce a shift of the axis of rotation of the cradle relative to the axis of the cylinder block by 5 mm.

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Modeling of Working Processes of an Adjustable APN Type PVC 1.85 Taking Into Account Parametric Oscillations

Cited by 2 publications

References 0 publications

Development of the Sowing System of the Sowing Complex Forinternal-Soil Differentiated Mineral Fertilizer With Simultaneous Sowing of Cereal

Development of the Sowing System of the Sowing Complex Forinternal-Soil Differentiated Mineral Fertilizer With Simultaneous Sowing of Cereal

Study of the Trajectory of Movement of the Reduced Plunger Pressure Force on the Axial Piston Pump Cradle

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