scholarly journals Substantiation of the parameters of the working bodies of undulating disks of soil-cultivating harrows with a bionic approach

2021 ◽  
Vol 845 (1) ◽  
pp. 012140
Author(s):  
I V Sobolevsky ◽  
V S Pashtetskiy ◽  
I I Kalafatov
Keyword(s):  
Erosion Resistance ◽  
Dung Beetle ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Cerastoderma Edule ◽  
Agricultural Mechanics ◽  
Bivalve Shell ◽  
Working Bodies

Abstract The article presents the methods and results of the bionic approach in the system of agricultural mechanics, which made it possible to theoretically substantiate the main parameters of the model of the working organs of wavy discs using two bionic prototypes - the burrowing leg and radial ribs of the bivalve shell of the edible heart-shaped mollusk (Cerastoderma edule) and the burrowing leg of the dung beetle common (Geotrupes stercorarius). The model of the working bodies of undulating disks allows one to preserve the anti-erosion resistance of the soil in the upper cultivated layer in order to preserve its structure and stubble background during non-moldboard tillage in the soil-protective agriculture system for the technologies “Verti-till” and “Strip-till”. The results of theoretical studies on the substantiation of the design parameters of the working bodies of wavy discs for surface tillage are presented.

scholarly journals Traction resistance of the combined machine plough

2021 ◽  
Vol 264 ◽  
pp. 04036
Author(s):  
Dustmurod Chuyanov ◽  
Golib Shodmonov ◽  
Ibrat Ismailov ◽  
Gayrat Ergashov ◽  
Akramjon Sadikov
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Drill Bit ◽  
Technological Parameters ◽  
Analytical Expression ◽  
Soil Cultivation ◽  
Agricultural Mechanics ◽  
Theoretical Mechanics

Subsoils are widely used on tillage and combination machines. The tiller of the combined machine for preparing the soil for sowing melons and gourds carries out strip loosening of the subsoil layers. The study aims to theoretically determine the traction resistance of a soil deepener of a combined machine for preparing the soil for sowing melons and gourds. The study uses the basic provisions of mathematics, theoretical mechanics, and agricultural mechanics. In studies, it is assumed that the destruction of the soil under the influence of the drill bit occurs by separation. The total traction resistance of the subsoiler was determined as the sum of the resistance of the rack and the bit. An analytical expression has been obtained to determine the traction resistance of a tilting machine with an inclined stand, depending on its design, technological parameters, and the physical and mechanical properties of the soil. As a result of theoretical studies, it was found that the traction resistance of the soil deepener is mainly influenced by its design parameters, the depth of soil cultivation, the physical and mechanical properties of the soil, and the speed of the machine.

scholarly journals Bionic substantiation of parameters of asymmetric plane-cutting working bodies of machines for surface tillage

2020 ◽  
Author(s):  
I.V. Sobolevsky ◽  
Keyword(s):  
Horizontal Plane ◽  
Cutting Tool ◽  
Cutting Edge ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Treated Soil ◽  
Depth Processing ◽  
Theoretical Assumptions ◽  
Left And Right ◽  
Working Bodies

The article reveals a biosystems approach to substantiating the theoretical assumptions of the design parameters of asymmetric plane-cutting working bodies of machines for surface tillage, with the widths of the left and right plane-cutting knives, creating conditions for stable running in the horizontal plane, taking into account the properties of the treated soil, the shape of the cutting edge of the knives and their depth processing. As a result of theoretical studies, the shape of the asymmetric planar cutting tool for surface tillage to a depth of 16 cm, the rational ratio of the working width of the left and right plane cutting knives, ensuring stability along the depth and in the horizontal plane, with the best agrotechnical indicators, is within 2.1– 2.7.

Justification of design parameters of the fractional reaping conveyor and its devices for removal of beveled stems from under the wheels of the vehicle

2019 ◽  
Vol 1 (3) ◽  
pp. 1-10
Author(s):  
Mikhail M. Konstantinov ◽  
Ivan N. Glushkov ◽  
Sergey S. Pashinin ◽  
Igor I. Ognev ◽  
Tatyana V. Bedych
Keyword(s):  
Optimal Design ◽  
Technological Process ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Optimal Parameters ◽  
Belt Conveyor ◽  
Grain Crops ◽  
Mode Of Operation ◽  
Optimal Values ◽  
Main Component

In this paper we consider the structural and technological process of the combine used in the process of separate harvesting of grain crops, as well as a number of its parameters. Among the main units of the combine, we allocate a conveyor and devices for removing beveled stems from under the wheels of the vehicle. The principle of operation of the conveyor at different phases of the Reaper and especially the removal of cut stems from under the wheels of the vehicle during operation of the Reaper. The results of theoretical studies on the establishment of the optimal design of the parameters of the belt conveyor are presented, the ranges of their optimal values are considered and determined. Studies on the establishment of optimal parameters of the screw divider in the Reaper, which is the main component of the device for removal of beveled stems, are presented. Taking into account the optimal design and mode of operation of the screw divider, the correct work is provided to remove the cut stems from under the wheels of the harvester.

Substantiation of amplitude-frequency characteristics and design parameters of vibration exciter in volume oscillation separator

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
I Palamarchuk ◽  
◽  
V Vasyliv ◽  
V Sarana ◽  
M Mushtruk ◽  
...  
Keyword(s):  
Translational Motion ◽  
Operating Conditions ◽  
Design Parameters ◽  
Vibration Velocity ◽  
Vibration Exciter ◽  
Lagrange Equations ◽  
Bulk Materials ◽  
Vibrating Screen ◽  
Working Bodies ◽  
Oscillating Motion

The main effects of the developed design for vibratory separator: the increased driving force in the process of bulk material separation in this work, achieved by providing the working cylindrical-conical container with vibrational motion; improving the conditions for the passage of product particles through openings, achieved by providing the sieve surface with volume oscillations; reduction of energy consumption and improvement of operating conditions for support nodes during the operation of the designed vibrating screen, achieved due to the installation of additional elastic elements between the separator body and bearing assemblies of the vertical drive shaft in vibration exciter. Providing the working bodies of the designed vibrating screen with volume oscillating motion allows increasing the performance and quality of the separation process of solid bulk materials. To determine the rational parameters for vibration screening process, the equations of motion of working bodies as a conical sieve surface were obtained using the method of the Lagrange equations of the second order. When applying solutions of the Cauchy problem for linear nonhomogeneous differential equations, the solution of the latter was obtained. The obtained dependences of oscillation amplitudes, vibration velocity and vibration acceleration, and the intensity of oscillating motion allowed us to perform a mathematical analysis for power and energy parameters of vibration drive in the developed separator. The inclined placement of the conical sieve surface allows for spatial gyration or circular translational motion, which makes it possible to realize the advantages of volumetric separation of bulk materials. The results of the conducted analytical study made it possible to substantiate the optimal inclination angle for working sieve surface. Based on our analysis, the design parameters of vibration exciter were substantiated and clarified, and the design of this technical system was demonstrated.

scholarly journals Theoretical and experimental substantiation of the design parameters for the working body of a row cultivator

2019 ◽  
Vol 126 ◽  
pp. 00051 ◽  
Author(s):  
Evgeny Zykin ◽  
Svetlana Lazutkina
Keyword(s):  
Weed Control ◽  
Cultivated Plants ◽  
Design Parameters ◽  
Weed Plants ◽  
Working Bodies ◽  
Experimental Substantiation

The authors of the article propose the design of a row cultivator, equipped with combined working bodies, which makes it possible to carry out inter-row weed control in one pass with full cultivation of the protective zones of grown crops. The soil drop distance and the distance between the flat discs located in the adjacent gangs of the row cultivator for thorough covering weed plants with a layer of soilwithout damage to cultivated plants have been substantiated theoretically.

scholarly journals TURBULIZATION METHOD OF FORMATION OF HIGHLY DISPERSED DROPLETS

2020 ◽  
Vol 2020 (1) ◽  
pp. 28-33
Author(s):  
Kh Irisov ◽  
◽  
I Ashirbekov ◽  
A Kartoshkin ◽  
A Abdazimov
Keyword(s):  
Physical Properties ◽  
Design Parameters ◽  
Working Fluid ◽  
Theoretical Studies ◽  
Traditional Methods ◽  
Operating Modes ◽  
Highly Dispersed ◽  
Object Of Study ◽  
Fluid Design

The article critically analyzes traditional methods of forming drops of defoliants and liquid chemicals. As an object of study, a sprayer with a perforated turbulator was selected, which ensures the formation of fine droplets on a short spraying torch. The degree of crushing of the working fluid, design parameters and operating modes of the proposed sprayer are investigated. Based on theoretical studies, analytical dependencies that reveal the physical properties of the sprayed liquid are analyzed, a description of the device and the principle of operation of the sprayer equipped with a perforated turbulator is given. The above analytical dependencies allowed more purposefully improving the design of the proposed atomizer.

scholarly journals RESEARCH OF THE FUNCTIONING AND OPTIMIZATION PROCESS OF THE STRUCTURAL-TECHNOLOGICAL PARAMETERS

2020 ◽  
pp. 142-150
Author(s):  
Vitaliy Yaropud
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Flow Rate ◽  
Thermal Power ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Technological Parameters ◽  
Air Flows ◽  
Counter Current ◽  
Pipe Heat

Domestic and foreign scientists in recent years have performed a considerable amount of scientific research on the biological justification of optimal combinations of microclimate parameters required for the normal development of animals. However, the results of the studies do not allow one to specify the optimal parameters for different species of animals, taking into account their age, sex, weight and level of feeding. While it is possible to specify rather wide limits of change of temperature and relative humidity of air at which productivity is maximum, and technical and economic efficiency is approximately the same. Providing microclimate regulations in livestock premises is associated with significant costs of electricity and heat, which is about 17% of the producers' costs. To create a microclimate in livestock premises based on the above technological parameters and the analysis of the design features of the recuperators, two design and technological schemes of the three-pipe recuperator, which differ in the directions of movement of air flows, are proposed. The purpose of the research is to increase the efficiency of the technological process of functioning of the three-pipe recuperator for livestock premises by substantiating its structural and mode parameters. The results of theoretical studies of pneumatic losses in the three-pipe recuperator determined the dependence of pressure and power losses on the length of the air duct of the three-pipe recuperator, the radius of the external duct and the volume flow rate of air. As a result of theoretical studies, a mathematical model of the heat transfer process in a three-pipe heat exchanger was developed, with condensation in it, which allows to determine the temperature distribution of air flows by its length and its thermal capacity. The results of theoretical studies of the process of heat transfer in the design and technological schemes of a three-pipe recirculator with counter-current and direct-current showed that the counter-current variant is more effective. Optimization of the results of theoretical studies allowed us to determine the dependence of the design parameters of the three-pipe heat exchanger on the volumetric flow rate of air, subject to the highest useful thermal power.

scholarly journals Estimating the dynamics of a machine-tractor assembly considering the effect of the supporting surface profile

2021 ◽  
Vol 1 (7 (109)) ◽  
pp. 51-62
Author(s):  
Ivan Galych ◽  
Roman Antoshchenkov ◽  
Viktor Antoshchenkov ◽  
Igor Lukjanov ◽  
Sergey Diundik ◽  
...  
Keyword(s):  
Surface Profile ◽  
Vertical Direction ◽  
External Factors ◽  
Dynamic Loads ◽  
Theoretical Studies ◽  
Bearing Surface ◽  
Supporting Surface ◽  
Oscillation Energy ◽  
Working Bodies ◽  
Oscillatory Processes

Results of theoretical studies of dynamics of the machine-tractor assembly taking into account the influence of a bearing surface profile were presented. It was established that in the course of operation, the machine-tractor assembly is exposed to a number of external factors leading to a change of vertical loads on the chassis and the engine. Mathematical models of dynamics of a tractor and a machine and a tractor unit consisting of a tractor of pivotally connected arrangement and a trailed sower were constructed. Such models make it possible to study dynamics and oscillatory processes of multi-element units. A mathematical model of tractor wheel dynamics was formed. Speeds and angles of orientation of elements of the machine-tractor assembly in space were determined. Influence of profile of the bearing surface on the unit elements when moving in the field prepared for sowing and the field after plowing was calculated. Theoretical studies of the influence of the bearing surface profile on dynamics of the machine-tractor assembly were performed on the example of KhTZ-242K tractor and Vega-8 Profi sower (Ukraine). When moving, the sower frame has a smaller amplitude of vibration accelerations than that of the tractor. Accordingly, the tractor has higher oscillation energy because it rests on the ground through its wheels having appropriate stiffness. The sower moves with its working bodies immersed into the soil which leads to a decrease in the amplitude of oscillations. The highest energy of amplitude of oscillation accelerations of the sower frame in the vertical direction was observed at frequencies of 15.9; 23.44; 35.3 and 42.87 Hz. It was found that the increase in working speeds of agricultural units leads to the fact that oscillations of all components reach significant values. This entails an increase in dynamic loads on soil and, as a consequence, its compaction

Approach to better beet washing. Part 2

2018 ◽  
pp. 345-350 ◽  
Author(s):  
Daniel Nouws ◽  
Jan L.M. Struijs
Keyword(s):  
Sugar Beet ◽  
Contact Time ◽  
Clay Soil ◽  
Pilot Scale ◽  
Additional Benefit ◽  
Wash Water ◽  
Clay Soils ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Short Contact Time

In 2014 the first part of the “Approach to better beet washing” was published by Spapens-Oerlemans et al. [1]. The enlargement of capacities and the increase of the relative amount of clay-soil received by the Dutch Suiker Unie factories, requires a more effective beet washing. The experiments done since 2009 gave new insights in ‘mechanical’ washing of sugar beet originating from clay-soils. To reach the desired washing result a sufficient ‘mechanical’ washing is required with an additional spray washing step. Since 2013 new understandings about the relevant design parameters and the optimal configuration for spray washing of clay-soil-beet were derived from theoretical studies as well as pilot and factory scale experiments. An additional benefit of spray washing instead of extended mechanical washing is the more gentle treatment and short contact time with wash water, which results in less sugar elution. By implementing the pilot scale based washing curve and analyzing the sugar elution to wash water a technical design of two new beet washing facilities in the Netherlands could be made.

CLASSIFICATION OF TWO-DISC COULTERS BY TECHNOLOGICAL AND DESIGN PARAMETERS

2021 ◽  
Vol 3 (144) ◽  
pp. 56-63
Author(s):  
Vladimir R. Petrovets ◽  
◽  
Nikolay I. Dudko ◽  
Viktor V. Amelichev ◽  
Vasiliy M. Kuzyur ◽  
...  
Keyword(s):  
Rational Design ◽  
Research Purpose ◽  
Design Parameters ◽  
Structural Elements ◽  
Coding System ◽  
Technological Parameters ◽  
The Matrix ◽  
Working Bodies ◽  
Individual Design

High-quality sowing of grain crops depends on the design of the working bodies of agricultural machines. Based on analytical studies, it was proposed to develop a new classification of individual structural elements of coulters and their technological parameters. (Research purpose) The research purpose is in improvement of the digital classification table of coulter signs, the structure and form of representation of which would allow easily complementing the signs characterizing the studied working body without changing its formation algorithm. (Materials and methods) The coulter can be considered as a system consisting of a combination of individual design and technological features that are closely related to each other. A two-disc coulter was analyzed according to the proposed classification, and a digital coding system was proposed. This classification allows us to include not only the known types of coulters, but also to predict new designs for the specified technologi-cal parameters. (Results and discussion) The features and properties of coulters in the matrix are located vertically and horizontally, respectively, and are considered in in-teraction, coulters of one class are associated with many features and properties of coulters of another class. This classification allows you to replace the existing large classifications with ordinary numbers, to conduct digital coding of any coulters of sowing machines. (Conclusions) The proposed classification allows us to apply digi-tal coding of the entire variety of features and properties of existing and new designs of two-disc coulters, to use computer technologies for searching, storing and pro-cessing information on them. The classification is used to select a rational design of the working body.

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