scholarly journals Determination of the installation parameters for additional attachments on the plowing unit for soil tillage

2021 ◽  
Author(s):  
V. Chebotarev ◽  
◽  
I. Kruk ◽  
F. Nazarov ◽  
Y. Chigariev ◽  
...  
Keyword(s):  
Power Consumption ◽  
Experimental Studies ◽  
Soil Surface ◽  
Soil Tillage ◽  
Kinematic Parameters ◽  
Technological Parameters ◽  
Soil Particles ◽  
Soil Movement ◽  
Working Surface

Summary. This article is dedicated to the subject of designing additional tools for use with reversible ploughs that cuts and loosens topsoil. The aim is to reduce power consumption spent for soil tillage by using reversible ploughs with roller cultivators. Methods. Theoretical and experimental studies of the topsoil movement on the plough’s wing, the mouldboard and beyond. Results. Analysis of the movement of soil particles falling from the top edge of the plough’s moulboard has allowed to obtain analytical dependence for determining the size range of soil particles based on the geometry of the working surface of the plough’s body (distance from the soil surface to the top edge of the mouldboard, the angles of the edge of the mouldboard) and the kinematic parameters of the soil (speed of the plough and roller cultivator, soil particles speed on the edge of mouldboard, soil particles descent time). A research, on the movement of the soil particles, on the mouldboard surface of the plough's body is presented. The section through the mouldboard perpendicular to the wing of the plough is described by the equation of the "inverted" cycloid and based on it the dependences have been obtained to determine the kinematic parameters of the movement of the soil particles on the surface of the plough’s body, depending on the mouldboard type and properties of the soil. Results obtained in this article allow to design the roller cultivators for reversible ploughs with determined parameters of installation, in which the power consumption costs of the plowing process will be minimal. Conclusions. Obtained analytical dependences, that determine kinematic and technological parameters of the soil movement on the working surface of the plow, the section through the orthogonal wing that has the form of an "inverted"cycloid, the variable design and technological parameters of the plough and the conditions of its operation, allowing to justify the installation parameters of the roller cultivator relative to the plough, taking into account the proposed correction ratio, which depends on the mechanical properties of the soil and its structure.

scholarly journals INFLUENCE OF CONSTRUCTIVE AND TECHNOLOGICAL PARAMETERS OF THE UNIT FOR STRIP TILL ON THE LUMPINESS

2020 ◽  
Author(s):  
G. Golub ◽  
◽  
A. Dvornyk
Keyword(s):  
Winter Wheat ◽  
Relative Position ◽  
Experimental Studies ◽  
Movement Speed ◽  
Technological Parameters ◽  
Depth Of Processing ◽  
Processing Depth ◽  
Economic Methods ◽  
Strip Tillage

The goal of the work. Investigate the influence of the relative position of the depth of processing with a chisel, the speed of movement of the unit and the distance between the cutting side discs on the lumpiness of the processed strip. Methods of research: analytical - quantitative determination of the quality of strip tillage; laboratory-field - for research, an experimental installation was completed with an MTZ-892 tractor and a section of the unit for strip tillage; statistical with generally accepted agronomic and economic methods. Results. Experimental studies of changes in the design and technological parameters of the unit for strip processing with the determination of lumpiness have been carried out. To study the main parameters, the depth of processing of the subsoiler (chisel) is taken from 13 to 27 cm, the distance between the cutting side discs is from 10 to 30 cm, the speed of the MTA is from 4 to 11 km/h. Unchanged parameters during the study: the distance from the axis of the front disc to the chisel is 50 cm, the distance from the chisel to the axis of the cutting side discs is 50 cm, the immersion depth of the cutting side discs is 10 cm. Experimental background is winter wheat stubble. Soil cultivation for winter wheat - deep (18 cm) disking, before that plowing to a depth of 25 cm. According to the research results, graphs of the dependence of lumpiness on the relative position of the chisel, cutting side discs and changes in the speed of the MTA were built. As the speed and distance between the side cutting discs increase, the lumpiness value decreases. Conclusions. Based on the results of the studies, the dependences of lumpiness on the relative position of the chisel and cutting side disks were obtained when the speed of the MTA was changed. It was determined that with an increase in the processing depth, the distance between the cutting side discs of 20 cm and the MTA movement speed of 7.5 km / h, a uniform increase in lumpiness is observed. The distance between the side cutting discs of 10 cm is not suitable for work.

Experimental Studies of Force Systems on Steered Agricultural Tyres

1966 ◽  
Vol 181 (1) ◽  
pp. 133-148 ◽  
Author(s):  
P. A. Taylor ◽  
R. Birtwistle
Keyword(s):  
Experimental Determination ◽  
Experimental Studies ◽  
Soil Surface ◽  
Slip Angle ◽  
Vertical Load ◽  
Force Systems

The paper reports the experimental determination of the force systems acting on free-rolling 7–50 times 16 agricultural tyres, measured with a six-component suspension of the test wheel. Multivariate experimentation techniques were used involving five variables: slip angle, camber, vertical load, tyre pattern and land or furrow operation. The results are presented as three force and three moment components; other methods of representation are discussed briefly. Although the side or cornering force depends on many factors, particularly the soil surface, and is therefore difficult to predict, it is suggested that the draught force (i.e. resistance in the direction of motion) can be expressed as a function of slip for all surfaces.

scholarly journals INVESTIGATION OF SOIL MOTION ALONG THE WORKING SURFACE OF A DISK CULTIVATOR

2018 ◽  
Vol 12 (3) ◽  
pp. 54-60
Author(s):  
Айрат Валиев ◽  
Ayrat Valiev
Keyword(s):  
Soil Conditions ◽  
Relative Deformation ◽  
Disk Radius ◽  
Soil Particles ◽  
Soil Movement ◽  
Working Surface ◽  
Inclination Angles ◽  
The One ◽  
Theoretical Mechanics ◽  
Limiting Value

The results of theoretical studies of a disk cultivator are presented, the working units of which consist of two flat discs, inclined to each other in the horizontal and vertical planes. The distance between the upper leading edges of the discs is greater than between the lower rear edges. When the discs move in the soil, the layer is jammed between them, breaks off from the bottom of the furrow, rises slightly upwards and is laid back into the furrow in the loosened state. The main constructive and adjusting parameters of the working unit are the inclination angles of discs γ, the distance between the discs d and the radius of the disks R. The purpose of this work is a theoretical study of the soil movement process in the inter-disk space and the rationale for the design and adjusting parameters of the developed disc cultivator. Based on the methods of theoretical mechanics, the terms for separating the soil particles from the main monolith and their motion along the working surface of the disks are investigated. Equations, describing the trajectories of soil particles with allowance for specific soil conditions, characterized by the basic mechanical parameters of the soil and also depending on the parameters of the working organ and the depth of soil cultivation are obtained. Based on the results of solving these equations, it is established that in the process of working at a depth of up to 16 cm, with a distance between the disks d = 0.15 ... 0.20 m, disc angles γ = 6 ... 90 and disk radius R = 0.25 m, the soil will be guaranteed to tear off from the monolith, rise to a height above the horizontal axis of the disk working units and leave the interdisk space. At the same time, on the one hand, the limiting value of the relative deformation of the soil is reached in the layer being processed, its fracture and crumbling are ensured, and on the other hand, the soil particles are thrown forward and the working organs of the disk cultivator are blocked.

HARDENING OF BLADE UNITS OF SOIL TILLAGE MACHINES BY METHOD OF ELECTRICAL OF CONTACT CONTINUOUS FLASHING

2016 ◽  
Vol 11 (1) ◽  
pp. 70-72
Author(s):  
Шамсутдинов ◽  
Faiz-Rakhman Shamsutdinov ◽  
Пикмуллин ◽  
Gennadiy Pikmullin ◽  
Гайнутдинов ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Power Consumption ◽  
Electrical Contact ◽  
New Method ◽  
Soil Tillage ◽  
Technological Parameters ◽  
Technological Processes ◽  
Wide Range ◽  
Quantitative Characteristics

The basic technological parameters of a qualitatively new method of reinforcing blade units of tillers by method of processing electrical contact continuous flashing. We established schemes of technical execution of the strengthening process and obtained analytical dependences, determining the quantitative characteristics of the power consumption of the processing in a wide range of modes of operational and technological processes in their relationship with the thermal properties of processed materials.

scholarly journals MATHEMATICAL MODELING OF VERTICAL OSCILLATIONS OF A CUTTING MACHINE FRONTLY MOUNTED ON AN ARABLE-TILL TRACTOR

2021 ◽  
pp. 39-56
Author(s):  
Volodymyr Bulgakov ◽  
Valeriy Adamchuk ◽  
Grigory Kaletnіk ◽  
Ivan Golovach
Keyword(s):  
Differential Equation ◽  
Vibration Amplitude ◽  
Experimental Studies ◽  
Vertical Plane ◽  
Soil Surface ◽  
Design Parameters ◽  
Analytical Determination ◽  
Surface Irregularities ◽  
Rotary Cutting

Experimental studies and production experience show that the most productive and high-quality collection of sugar beet haulms without soil impurities, is possible only when a continuous, carbonless cut of its main mass at the root is carried out. However, the use of haulm toppers with rotary haulm cutters, which are carried out without a guide cut, frontally mounted on energy resources, as well as a significant increase in the working speeds of harvesting, cause intense vibrations of these haulm toppers in the longitudinal-vertical plane, which not only reduces the quality of trimming the heads of root crops, but causes, in general, significant losses of tops. Therefore, there is a need for an analytical determination of the influence of the kinematic and design parameters of a topper, frontally mounted on a wheeled tractor, on the magnitude of the amplitude of oscillations in the longitudinal-vertical plane of its haulm topper. Taking this need into account, in this work we have constructed a computational mathematical model of the movement of a topper front-mounted on a wheeled tractor, based on the use of the original equation of dynamics in the form of Lagrange of the second kind. According to the developed equivalent circuit and the implementation of the necessary mathematical transformations, a nonlinear differential equation was obtained, which describes the oscillations of the rotary cutting device of the topper in the longitudinal-vertical plane when its pneumatic gauge wheels move over the unevenness of the soil surface. According to the compiled program and the numerical solution on the PC of the specified differential equation, rational constructive and kinematic parameters of the topper frontally mounted on the tractor have been determined which reduce the indicated oscillations. So, with the forward speed of movement of the topping unit equal to = 3,0 m∙ s–1, the vibration amplitude of the topper rotor decreases 1,2 ... 1,5 times in comparison with the height of the field surface irregularities, equal to = ± 0.04 m. With the vibration amplitude of the lower ends of the knives of the rotary cutting apparatus up to 4 cm, the loss of haulms does not increase significantly. However, with an increase in the amplitude of these fluctuations to 7 cm and more, the loss of tops increases significantly, the maximum values of which exceed 12%.

scholarly journals Determination of crushing energy during vibratory crushing

2019 ◽  
Vol 2 (1) ◽  
pp. 287-294
Author(s):  
Marcin Mazur
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Laboratory Test ◽  
Electrical Energy ◽  
Energy Requirements ◽  
Gap Size ◽  
Test Results ◽  
Kinematic Parameters ◽  
Jaw Crusher

Abstract The paper presents a new method of determining the energy consumption for vibratory crushing. Using the laboratory vibratory jaw crusher with kinematic actuation of the jaws, the study of determining power consumption while crushing limestone and diabase was conducted. During the study, electrical energy used on the crushing process was measured as a function of changing design and kinematic parameters of the vibratory crusher, i.e.: jaws stroke, the outlet gap size and frequency of jaws vibration. The article presents program of the research, the laboratory test stand of the vibratory jaw crusher KW 40/1 and the test results. Comparing the theoretical crushing energy requirements, determined by the Bond hypothesis, with the values measured during tests a large differences were observed. Using the Bond hypothesis the Vibratory Work Indexes were determined for the tested materials. Their values are higher than limestone and diabase Work Indexes available in the known literatures. The explanation may be greater amount of energy transferred to the material during vibratory crushing, which results in much higher efficiency of the crushing process.

RESULTS OF FIELD STUDIES OF SOIL-TILLAGE TOOLS WITH ELLIPSOVID DISKS

2019 ◽  
Vol 14 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Фанис Яруллин ◽  
Fanis Yarullin ◽  
Равиль Ибятов ◽  
Ravil Ibyatov ◽  
Сергей Яхин ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Field Studies ◽  
Operating Conditions ◽  
Soil Tillage ◽  
Technological Parameters ◽  
Rotary Tool ◽  
High Speeds ◽  
Processing Depth ◽  
Axis Of Rotation ◽  
Working Section

This paper presents the results of field studies of a rotary tool for soil tillage, consisting of a frame on which is placed a working section in the form of elliptical discs with double-sided grinding. The major axes of the ellipsoid disks are inclined to the axis of rotation. A rotating roller is installed behind the working section to level and compact the field surface. The aim of this work is to substantiate the rational values of the technological parameters of the rotary tool on the basis of experimental studies in field conditions of the soil tillage depth, combing of the treated field surface and the degree of soil crumbling under various operating conditions of the unit. To determine the processing depth and the degree of soil crumbling, standard methods were used. Grating was determined using the device IP-250. As a result of research, it was found that, at a given processing depth of 80 mm and an increase in the speed of movement of the rotary tool to 3.61 m/sec., the ridge surface of the field decreases to 14-15 mm, and then begins to increase. This is explained by the fact that at high speeds the rotational roller does not have time to destroy lumps, which leads to an increase in combing. It was also found that with an increase in the speed of movement up to 3.61 m/sec. and a processing depth of 80 mm, the soil crumbling degree increases to 86-87%, and with a further increase in speed it begins to decrease. This is explained by the fact that at elevated speeds of aggregate’s movement, the working units of the rotary tool begin to deepen from the soil, as a result of which the predetermined depth of tillage and its high crumbling cannot be maintained. Thus, rational values of the speed of a rotary tool’s movement with elliptical disks ranging from 3.33 to 3.88 m/sec., which ensure the fulfillment of agrotechnical requirements for surface tillage, are determined.

scholarly journals Features of Manufacturing Spiral Corrugated Blanks From Various Profiles of Corrugations

2018 ◽  
pp. 54-61
Author(s):  
А.P. Dragan ◽  
О.V. Flionts ◽  
М.І. Klendiy ◽  
R.М. Kotyk ◽  
І.І. Semeniv
Keyword(s):  
Structural Parameters ◽  
Experimental Studies ◽  
Successful Implementation ◽  
Technological Parameters ◽  
Cylindrical Gear ◽  
Cross Sectional ◽  
Existing Structures ◽  
Leading Role ◽  
Pharmaceutical Industries

The leading role in the field of using spiral mechanisms plays the design and manufacture of corrugated spiral working bodies, which are widely used in mixers, heat exchangers, machines for borontation of free abrasives, in the confectionery and pharmaceutical industries, etc. Increasing the requirements to the design and technological parameters, quality, reliability and durability, enhanced technological capabilities require deep analysis of existing structures and technologies of their production and the development of scientific research on theoretical and experimental studies and their successful implementation in production. The paper focuses on the development and implementation of new advanced technological processes of spiral corrugated and ring blanks. The results of theoretical and experimental research were based on the development and analysis of technological schemes for the formation of screw corrugated blanks in order to improve the mixing of bulk materials. The functional and structural and technological features of spiral corrugated blanks manufacture and the designing of the appropriate technological equipment and facilities with the withdrawal of the analytical dependences for determination of treatment regimes. The analytical dependences for determination of power and structural parameters of technological process of bending blanks between two cylindrical gear cross-sectional toothed wheels. Characteristics curves of spiral corrugated blanks on the basis of width and thickness of the lines and the workpiece step of 1 ... 3 mm thickness and with 15 ... 25….30 mm width are given in the paper. The results of the experiment show that labor productivity will increase by 20-30% in manufacturing, 2-3 times in control operations

A possibility of using nickel concentrate, obtained as a result of hydrometallurgical enrichment of manganese-containing raw materials, at steel alloying

2020 ◽  
Vol 76 (7) ◽  
pp. 709-715
Author(s):  
O. Yu. Kichigina
Keyword(s):  
Raw Materials ◽  
Experimental Studies ◽  
Selective Extraction ◽  
Technological Parameters ◽  
Nickel Iron ◽  
Nickel Recovery ◽  
Nickel Concentrate ◽  
Steel Alloying ◽  
High Degree ◽  
Comprehensive Processing

At production of stainless steel expensive alloying elements, containing nickel, are used. To decrease the steel cost, substitution of nickel during steel alloying process by its oxides is an actual task. Results of analysis of thermodynamic and experimental studies of nickel reducing from its oxide presented, as well as methods of nickel oxide obtaining at manganese bearing complex raw materials enrichment and practice of its application during steel alloying. Technology of comprehensive processing of complex manganese-containing raw materials considered, including leaching and selective extraction out of the solution valuable components: manganese, nickel, iron, cobalt and copper. Based on theoretical and experiment studies, a possibility of substitution of metal nickel by concentrates, obtained as a result of hydrometallurgical enrichment, was confirmed. Optimal technological parameters, ensuring high degree of nickel recovery out of the initial raw materials were determined. It was established, that for direct steel alloying it is reasonable to add into the charge pellets, consisting of nickel concentrate and coke fines, that enables to reach the through nickel recovery at a level of 90%. The proposed method of alloying steel by nickel gives a possibility to decrease considerably steel cost at the expense of application of nickel concentrate, obtained out of tails of hydrometallurgical enrichment of manganese-bearing raw materials, which is much cheaper comparing with the metal nickel.

Improvement Of Curvilinear Diagrams Of Concrete Deformation

2019 ◽  
pp. 99-104
Keyword(s):  
Reinforced Concrete ◽  
Peak Load ◽  
Experimental Studies ◽  
Concrete Structures ◽  
Deformation Model ◽  
Reinforced Concrete Structures ◽  
Significant Difference ◽  
Deformation Diagrams

Problems when calculating reinforced concrete structures based on the concrete deformation under compression diagram, which is presented both in Russian and foreign regulatory documents on the design of concrete and reinforced concrete structures are considered. The correctness of their compliance for all classes of concrete remains very approximate, especially a significant difference occurs when using Euronorm due to the different shape and sizes of the samples. At present, there are no methodical recommendations for determining the ultimate relative deformations of concrete under axial compression and the construction of curvilinear deformation diagrams, which leads to limited experimental data and, as a result, does not make it possible to enter more detailed ultimate strain values into domestic standards. The results of experimental studies to determine the ultimate relative deformations of concrete under compression for different classes of concrete, which allowed to make analytical dependences for the evaluation of the ultimate relative deformations and description of curvilinear deformation diagrams, are presented. The article discusses various options for using the deformation model to assess the stress-strain state of the structure, it is concluded that it is necessary to use not only the finite values of the ultimate deformations, but also their intermediate values. This requires reliable diagrams "s–e” for all classes of concrete. The difficulties of measuring deformations in concrete subjected to peak load, corresponding to the prismatic strength, as well as main cracks that appeared under conditions of long-term step loading are highlighted. Variants of more accurate measurements are proposed. Development and implementation of the new standard GOST "Concretes. Methods for determination of complete diagrams" on the basis of the developed method for obtaining complete diagrams of concrete deformation under compression for the evaluation of ultimate deformability of concrete under compression are necessary.

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