scholarly journals Study on combined machine for the subsurface soil treatment

2021 ◽  
Vol 939 (1) ◽  
pp. 012065
Author(s):  
Kh Ravshanov ◽  
F Mamatov ◽  
B Mukimov ◽  
R Sultonov ◽  
A Abdullayev ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Classical Mechanics ◽  
Design Scheme ◽  
Axis Of Rotation ◽  
Subsurface Soil ◽  
Transverse Distance ◽  
Winter Crops ◽  
Free Body ◽  
Working Bodies ◽  
Longitudinal Distance

Abstract The purpose of the study is to substantiate the relative position of the working bodies of a combined machine for non-fall tillage of winter crops. The design scheme and the principle of operation of the combined machine are given. The basic principles and methods of classical mechanics, mathematical analysis and statistics were used in this study. It is established that the most optimal design scheme of a combined machine for non-tillage of the soil and its preparation for sowing of repeated crops is considered to be a scheme consisting of non-tillage cases with crushers, a battery with cut-out spherical disks and a roller. According to the results of theoretical and experimental studies, it was found that with a longitudinal distance between the shaft-free bodies of 40 cm and a transverse distance of 90 cm, a longitudinal distance from the toe of the ploughshare to the center of the support wheel of 50 cm and a longitudinal distance from the toe of the ploughshare of the shaft-free body to the axis of rotation of the cut-out spherical disk of 120 cm, a longitudinal distance from the axis of rotation of the cut-out spherical disk to the center of the roller of 75 cm, high-quality tillage with minimal energy costs is provided.

scholarly journals Combination machine for soil cultivation and sowing grain

2021 ◽  
Vol 264 ◽  
pp. 04049
Author(s):  
Xo'jaxmat Maxamov ◽  
Rustam Tovashov ◽  
Bekzod Tovashov ◽  
Farruh Jabborov
Keyword(s):  
Experimental Studies ◽  
Classical Mechanics ◽  
Water Erosion ◽  
Minimal Energy ◽  
High Quality ◽  
Basic Principles ◽  
Sloping Lands ◽  
Transverse Distance ◽  
Design Diagram ◽  
Working Bodies

The purpose of the study is to substantiate the design scheme and parameters of the working bodies of a combined machine for tillage and sowing grain on sloping lands. The authors have developed a machine that performs technological operations for tillage, grain sowing, and ridge formation to prevent water erosion. The design diagram is given. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. Theoretical and experimental studies have established that using a chisel-shaped ripper with loosening knives as a loosening working body provides high-quality loosening of the soil. When the longitudinal and transverse distances between the rippers are 62.5 and 15 cm, respectively, the longitudinal distance between the rear ripper and the housing is 60 cm, and the transverse distance between the buildings is 90 cm, high-quality soil loosening, and grain sowing are achieved with minimal energy consumption.

scholarly journals Study on working bodies of the soil preparation machine for sowing potatoes

2021 ◽  
Vol 939 (1) ◽  
pp. 012068
Author(s):  
B Mirzaev ◽  
F Mamatov ◽  
U Kodirov ◽  
X Shirinboyev
Keyword(s):  
Energy Consumption ◽  
Classical Mechanics ◽  
Theoretical Studies ◽  
Minimal Energy ◽  
Basic Principles ◽  
Soil Preparation ◽  
Working Bodies ◽  
Knife Blade ◽  
Longitudinal Distance ◽  
Crest Height

Abstract The purpose of the study is to substantiate the parameters of the guide knife and the loosening pointed leg of the machine. The basic principles and methods of classical mechanics, mathematical analysis and statistics were used in this study. Theoretical studies were carried out to determine the parameters of the guide knife and the loosening pointed leg of the machine. It is established that to ensure the required value of the crest height with minimal energy consumption, the height and length of the guide knife should be 8 and 15 cm, respectively, the angle of the knife blade to the horizon - 30º, the longitudinal distance from the toe of the ploughshare body of the knife toe – 13 cm. To ensure the required crumbling of the soil, the width of the pointed loosening paw should be 15 cm.

scholarly journals EXPERIMENTAL RESEARCHES OF THE COMBINED UNIT FOR SMALL SOIL TREATMENT

2020 ◽  
Author(s):  
S.I. Kambulov ◽  
◽  
O.S. Babenko
Keyword(s):  
Experimental Studies ◽  
Soil Treatment ◽  
Working Process ◽  
Soil Preparation ◽  
Winter Crops ◽  
Energy Indicators ◽  
Nominal Load ◽  
Working Bodies ◽  
Experimental Researches

. The article presents the results of experimental studies on soil preparation for sowing winter crops on unpaired predecessors with a combined unit. The design of a combined unit with an adaptive set of working bodies has been developed. As a result of the research, agrotechnical and energy indicators of the working process were established. The nominal load of the unit together with the tractor is determined.

scholarly journals Clarification of Features of the Wheel Movement with a Perspective Constructive Scheme on a Rail

2020 ◽  
Vol 10 (19) ◽  
pp. 6758
Author(s):  
Evgeny Mikhailov ◽  
Stanislav Semenov ◽  
Sergii Kliuiev ◽  
Ján Dižo ◽  
Miroslav Blatnický ◽  
...  
Keyword(s):  
Support Surface ◽  
Relative Rotation ◽  
Friction Forces ◽  
Slippage Rate ◽  
Common Axis ◽  
Design Scheme ◽  
Axis Of Rotation ◽  
Traditional Design ◽  
Curved Track

The article presents the continuation of studies of the features of the wheel movement the traditional and perspective constructive scheme on a rail. Unlike the traditional design, the perspective constructive scheme of the wheel allows independent relative rotation of the support surface wheel and of its guide surface (flange) relative to their common axis of rotation. Previous authors’ works did not take into account the influence of the level of slippage in the main contact of the wheel with the rail on the value of the slippage rate in its flange contact. This article further examines the influence of this factor for both wheel designs. The results of the presented studies confirm the possibility of reducing slippage in the flange contact with the rail for a wheel of a promising design scheme in comparison with a traditional wheel. Reducing the power of friction forces in the contact of the wheel flange of a promising design scheme will reduce the resistance to movement of such a wheel along the rail, especially in curved track sections.

scholarly journals EXPERIMENTAL STUDIES OF THE PROCESS OF CUTTING THE HEAD OF CHICORY ROOTS

2021 ◽  
Vol 2 (46) ◽  
pp. 5
Author(s):  
E. Berezhenko ◽  
V. Pankiv ◽  
B. Berezhenko
Keyword(s):  
Experimental Studies ◽  
Regression Equation ◽  
Initial Speed ◽  
Kinematic Parameters ◽  
Main Mass ◽  
Methods Of Calculation ◽  
Cutting Length ◽  
Working Bodies ◽  
Root Buds ◽  
Chicory Roots

Reducing the energy consumption of the technological process of harvesting the main mass of chicory root buds is provided by developing, justifying the parameters and the use of advanced hooking modules. According to the results of field planned factor experiments, a regression equation is obtained, which characterizes the change in the cutting length of root heads from the initial speed of the knife, which is mounted rigidly on the pendulum of the copra at an angle to the direction of knife movement. The results of the study are the prerequisites for the development and improvement of methodology and methods of calculation and justification of rational structural and kinematic parameters of the working bodies of hook-harvesting modules of root-harvesting machines.Kеу wоrds: pendulum copier, hard knife, cutting length, knife speed, knife mounting angle, regression equation.

scholarly journals RESEARCH OF TECHNICAL CHARACTERISTICS OF NEW TYPES OF COUPLINGS

2020 ◽  
pp. 113-121
Author(s):  
Oleksii Tokarchuk ◽  
Yurii Polievoda
Keyword(s):  
Elastic Element ◽  
Rational Design ◽  
Experimental Studies ◽  
Bending Moment ◽  
Operational Reliability ◽  
Modern Technology ◽  
Operating Conditions ◽  
The Moment ◽  
Working Bodies ◽  
Moment Of Resistance

Dynamic loads that occur during the operation of existing couplings cause significant shock loads, which leads to rapid wear of the surfaces of the couplings and shortens the service life. Modern technology faces the task of improving the operational reliability of the working bodies and drives of machines. One way to solve this problem is to develop and use high-precision and low-dynamic safety couplings. In this regard, the question of developing new designs of safety couplings that reduce impact loads and increase the reliability and durability of machinery is relevant. The synthesis of structural and kinematic schemes of ball, cam and planetary safety couplings, the method of their calculation in combination with the nature of the change in the moment of resistance on the working body of the equipment. The article conducts a set of theoretical and experimental studies to determine their rational design, kinematic and dynamic parameters that will satisfy the operating conditions of machines and mechanisms. A force analysis of the elastic element (ring spring) was performed. The scheme of loading of an elastic element by two forces and other settlement schemes are constructed, namely: equivalent system; force diagrams for determining the load torque; force schemes for determining the unit moment; schemes of total bending moment; force schemes to determine the total unit moment. During static experimental studies of the developed ball safety couplings, the nature of their operation was established, the maximum torque at the two stages of operation of the couplings was determined and a comparative analysis between the results of theoretical and experimental studies was performed. The positive results of experimental researches of the developed coupling and theoretical positions which can be applied to a substantiation and a choice of rational parameters of the developed designs of couplings and their engineering designing were confirmed.

scholarly journals Study on mechanisms of tillage for melon cultivation under the film

2021 ◽  
Vol 304 ◽  
pp. 03012
Author(s):  
Khayriddin Fayzullaev ◽  
Farmon Mamatov ◽  
Bakhadir Мirzaev ◽  
Dilmurod Irgashev ◽  
Sodik Mustapakulov ◽  
...  
Keyword(s):  
Technological Process ◽  
Direct Cost ◽  
Mathematical Analysis ◽  
Performance Indicators ◽  
Classical Mechanics ◽  
Basic Principles ◽  
Machine Operation ◽  
Technical Procedure ◽  
Design Diagram ◽  
Working Bodies

The aim of the study is to develop a machine for preparing the soil for sowing melons under a tunnel film. The authors have developed a machine for preparing the soil for sowing melons under a tunnel film, which is equipped with deep-diggers with an inclined stand of the “paraplau” type, a furrow maker and rotary working bodies. A design diagram and a fragment of the machine operation have beak given. The basic principles and methods of classical mechanics, mathematical analysis and statistics were used in this study. Tests have established that the developed machine reliably performs the specified technological process and its performance indicators fully meet the requirements. When using the developed machine for preparing the soil for sowing melons under the film, the direct cost of processing one hectare of area is reduced by 33.4%. The study’s goal is to create a machine that prepares soil for seeding melons under a tunnel film. The authors have created a machine that includes deep-diggers with a “paraplau” style inclined platform, a furrow maker, and rotating working bodies for preparing the soil for planting melons beneath a tunnel film. A design schematic as well as a portion of the machine functioning has been provided. In this work, the fundamental concepts and methodologies of classical mechanics, mathematical analysis, and statistics were employed. The created machine reliably executes the required technical procedure, and its performance indicators completely fulfill the criteria, according to tests. The direct cost of processing one hectare of land is lowered by 33.4 percent when utilizing the developed machine to prepare the soil for growing melons beneath the film.

scholarly journals Comment on “Review of experimental studies of secondary ice production” by Korolev and Leisner (2020)

2021 ◽  
Vol 21 (15) ◽  
pp. 11941-11953
Author(s):  
Vaughan T. J. Phillips ◽  
Jun-Ichi Yano ◽  
Akash Deshmukh ◽  
Deepak Waman
Keyword(s):  
Kinetic Energy ◽  
Statistical Physics ◽  
Field Experiments ◽  
Numerical Models ◽  
Experimental Studies ◽  
Classical Mechanics ◽  
Field Studies ◽  
Scaling Analysis ◽  
Theoretical Formulation ◽  
Modelling Studies

Abstract. This is a comment on the review by Korolev and Leisner (2020, hereafter KL2020). The only two laboratory/field studies ever to measure the breakup in ice–ice collisions for in-cloud conditions were negatively criticised by KL2020, as were our subsequent theoretical and modelling studies informed by both studies. First, hypothetically, even without any further laboratory experiments, such theoretical and modelling studies would continue to be possible, based on classical mechanics and statistical physics. They are not sensitive to the accuracy of lab data for typical situations, partly because the nonlinear explosive growth of ice concentrations continues until some maximum concentration is reached. To a degree, the same final concentration is expected regardless of the fragment number per collision. Second, there is no evidence that both lab/field observational studies characterising fragmentation in ice–ice collisions are either mutually conflicting or erroneous such that they cannot be used to represent this breakup in numerical models, contrary to the review. The fact that the ice spheres of one experiment were hail sized (2 cm) is not a problem if a universal theoretical formulation, such as ours, with fundamental dependencies, is informed by it. Although both lab/field studies involved head-on collisions, rotational kinetic energy for all collisions generally is only a small fraction of the initial collision kinetic energy (CKE) anyway. Although both lab/field experiments involved fixed targets, that is not a problem since the fixing of the target is represented via CKE in any energy-based formulation such as ours. Finally, scaling analysis suggests that the breakup of ice during sublimation can make a significant contribution to ice enhancement in clouds, again contrary to the impression given by the review.

scholarly journals Combination machine for soil preparation and sowing of gourds

2021 ◽  
Vol 264 ◽  
pp. 04035
Author(s):  
Dustmurod Chuyanov ◽  
Golib Shodmonov ◽  
Gayrat Ergashov ◽  
Islom Choriyev
Keyword(s):  
Classical Mechanics ◽  
The Body ◽  
Basic Principles ◽  
Simultaneous Formation ◽  
Soil Preparation ◽  
Left And Right ◽  
Axis Of Symmetry ◽  
Minimum Expenditure ◽  
The Right ◽  
Longitudinal Distance

The purpose of the study is to substantiate the method and design scheme of a combined machine for preparing the soil and sowing melons. The authors propose a new method of soil preparation and sowing, as well as a machine for its implementation. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. The method of preparing the soil and planting gourds provides a combination of the following technological processes: the turnover of the layers of the upper layer of soil, the sowing area to the left and to the right, shallow tilling the soil of the field with the left and right sides of the sowing area, deep tillage seeding areas with simultaneous formation of irrigation furrows and the local application of fertilizers, soil preparation for sowing in line sowing and sowing seeds of melons. The machine consists of lister housings installed along the axis of symmetry of the unit, flat cutters, parallel-type deep-diggers, furrowers, coulters for fertilizing, and a sowing device. It was found that preparation of soil for sowing and planting of melons with a minimum expenditure of energy is provided by the width of Lusternik buildings 86 cm, the width of tillers and cultivators, respectively, 45 and 33 cm, the longitudinal distance between the body and the plane of 35 cm between the cultivators of 42.3 cm, and longitudinal spacing of the chisel cultivator and sowing device 110 cm.

scholarly journals Raking plates of the combination machine's subsoiler

2021 ◽  
Vol 264 ◽  
pp. 04039
Author(s):  
Khayriddin Fayzullayev ◽  
Dilmurod Irgashev ◽  
Sodiq Mustapakulov ◽  
Mokhichekhra Begimkulova
Keyword(s):  
Energy Consumption ◽  
Mathematical Analysis ◽  
Minimum Energy ◽  
Experimental Studies ◽  
Classical Mechanics ◽  
Basic Principles ◽  
Minimum Energy Consumption

The purpose of the research is to justify the type of subsoiling plates of the machine for preparing the soil for sowing melon crops. The machine designed by the authors for the preparation of the soil for sowing melon crops under the tunnel film is equipped with deep loosening subsoilers of “paraplough” type with loosening plates. The scheme of subsoiler arrangement on the frame of the machine is shown. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. The scheme of subsoiler arrangement on the frame depending on their parameters has been theoretically justified. Experimental studies have established that using a subsoiler in the form of a rod and plate with a length of 12 cm and a height of 20 cm provides the required crumbling of the soil at minimum energy consumption.

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