scholarly journals MODELING OF THE PROCESS OF CUTTING MINERAL GROUNDS BY PASSIVE WORKING DRAWNER DURING THE CONSTRUCTION OF CLOSED DRAINAGE

2019 ◽  
Vol 45 (3) ◽  
pp. 165-174
Author(s):  
E. Z. Batmanov ◽  
T. G. Gasanov ◽  
M. R. Guseynov
Keyword(s):  
Rheological Properties ◽  
Design Stage ◽  
Narrow Slit ◽  
Operating Modes ◽  
High Speeds ◽  
Closed Drainage ◽  
Electronic Model ◽  
Mineral Soils ◽  
Working Bodies ◽  
Water Saturated

Objectives.The article describes an electronic model of the soil to study its rheological properties and study the process of cutting passive working bodies (knives) of mineral soils with trench-less method of building a closed drainage.Method.The essence of the method consists in cutting through the ground with the help of a passive working body of a narrow slit under a given slope and simultaneously laying a drainage (usually plastic) pipe with a filter on its bottom.Result.The trenchless method is characterized by the possibility of laying pipes at high speeds, the simplicity of the design of drainage machines and, most importantly, the possibility of building drainage in water-saturated and collapsing mineral soils. A big advantage is the possibility of using a drainage machine with a trenchless method in conditions of small slopes with a sufficient length of stacked drains.Conclusion.The study of the process of cutting mineral soils with narrow, deep knives on an electronic model makes it possible, at the design stage, to evaluate the effect of changes in various factors and parameters on the operating modes of the drainage machine; if necessary, make changes to the complex of works on the construction of drainage using the trenchless method with the help of the BDM-300 bed-draining machine, as well as to determine the composition and duration of the work operations of the trench-free bed-draining machine.

scholarly journals Theoretical justification of the main parameters of the coulter group of the sod seeder for strip sowing

2020 ◽  
Vol 21 (3) ◽  
pp. 321-331
Author(s):  
V. A. Sysuev ◽  
S. L. Demshin ◽  
D. A. Cheremisinov ◽  
M. S. Doronin
Keyword(s):  
Soil Layer ◽  
Mineral Fertilizer ◽  
Theoretical Research ◽  
Design Stage ◽  
Mineral Fertilizers ◽  
Theoretical Justification ◽  
Torsion Spring ◽  
Operating Modes ◽  
Working Bodies ◽  
Compact Design

Increasing the efficiency of direct strip sowing of grass seeds by means of seeders with active furrow openers is possible when seed and fertilizer working bodies are removed from the zone of operation of disk milling cutters. A structural and technological scheme of the coulter group of the sod seeder for strip sowing is proposed, which consists of a milling furrow opener, fertilizer and seed coulters mounted on leashes in the form of torsion spring trailers, and a rolling roller. To ensure high quality multilevel sowing of grass seeds and granules of mineral fertilizers, it is necessary at the design stage to determine the length of the fertilizer coulter sides, which prevent premature shedding of soil from the furrow walls until the mineral fertilizer granules reach the bottom of the furrow, and the minimum allowable distance between the fertilizer and seed coulters, which allows to cover the granules of mineral fertilizers with soil completely while maintaining the compact design of the coulter group. In the course of theoretical research, mathematical dependences were obtained to determine the rational parameters and operating modes of the coulter group of the proposed design, which will ensure a minimum spread of mineral fertilizer granules over the depth of incorporation and a high stability of the soil layer thickness between mineral fertilizer granules and grass seeds. Rational parameters of the coulter group of the proposed design are determined for the range of operating speeds of the sod seeder for strip sowing: angle at the apex of the shank fertilizer coulter in the horizontal plane is 15-20º, the length of the fertilizer coulter sides is 0.040-0.045 m, the width of the fertilizer coulter bell is 0.02 m, minimum permissible distance between the fertilizer and seed coulters is 0.14-0.16 м.

Mathematical Modeling of Process Moving Cargo by Overhead Crane

2014 ◽  
Vol 701-702 ◽  
pp. 715-720 ◽  
Author(s):  
Vitaly Shcherbakov ◽  
Mikhail Korytov ◽  
Roman Sukharev ◽  
Elena Volf
Keyword(s):  
Mathematical Modeling ◽  
Mechanical System ◽  
Second Generation ◽  
Block Diagram ◽  
Design Stage ◽  
Bridge Crane ◽  
Overhead Crane ◽  
Operating Modes ◽  
Design Scheme ◽  
Simulink Model

According to the proposed design scheme of the overhead crane, with the use of blocks package SimMechanics Second Generation of MATLAB, a conceptual block diagram of connections was developed, according to which the was created Simulink-model of the mechanical system of the bridge crane with PID regulator. Simulink-model allows us to study the operating modes of the overhead crane on the its design stage.

scholarly journals Дослідження безприводного ротаційного органу адаптера до сівалки просапних культур

2018 ◽  
pp. 153-160
Author(s):  
Є. Я. Прасолов ◽  
С. А. Бєловол ◽  
Б. С. Черненко ◽  
А. В. Ужищенко ◽  
А. В. Шеметюк
Keyword(s):  
Fractional Composition ◽  
Technological Scheme ◽  
Field Profile ◽  
Transverse Beam ◽  
Soil Cultivation ◽  
Operating Modes ◽  
Soil Hardness ◽  
Working Bodies ◽  
Rotary Device

Представлено результати розробки безприводного ротаційного органу адаптера до сівалки просапних культур. Проведено аналіз робочих органів ґрунтообробних машин; обґрунтовано ґрунтообробний адаптер; визначено кути афронтальності й нахилу дискового  органу; проведено порівняльну оцінку показників твердості ґрунту; визначено раціональні параметри і режими роботи робочого органу; визначено фракційний склад ґрунту та розпушення робочим органом; проведено  дослідження з визначення раціонального кута φ робочого органу; встановлено поздовжній профіль насіннєвого ложа; виконано співвідношення ширини і глибини обробленої смуги; визначено коефіцієнти к1 і к2  у формулі тягового опору безприводного ротаційного органу. Для  підвищення якості передпосівного обробітку ґрунту запропоновано адаптер із безприводним ротаційним органом до сівалок, який складається з поперечної балки рами, на якій розташовані секції безприводного ротаційного органу. Для копіювання профілю поля кожна секція забезпечена паралелограмною підвіскою і підпружиненою штангою. Крім поперечної балки  рама адаптера складається з двох автозчіпок, які слугують для агрегатування з трактором, а автозчеплення з сівалкою, пов'язаних між собою поздовжніми балками.  Проведено випробування результатів науково-дослідної роботи, яким підтверджено ефективність та доцільність для використання у господарстві ПП Агрофірма «Анастасія» Глобинського району Полтавської області. The article presents the results of the development of a non-rotating rotational organ of the soil-working adapter to a seed drill of cultivating crops. The analysis of working bodies of soil-working machines was carried out; the constructive-technological scheme of the soil-working adapter is substantiated; defined angles of inclination and inclination of the disc body; comparative estimation of soil hardness indexes; defined rational parameters and operating modes of the working body; determined fractional composition of soil and loosening by the working body;  researches have been conducted to determine the rational angle φ of the working organ; the longitudinal profile of the seed bed is established; the ratio of the width and depth of the treated strip is executed; the coefficients k1 and k2 in the formula of the traction resistance of the non-driven rotational body are determined. To improve the quality of pre-sowing soil cultivation, an adapter with a rotary rotary device to the seeders is proposed. It consists of a transverse beam of a frame, on which, with the help of brackets, there are sections of a non-rotating rotary body. To improve the quality of pre-sowing soil cultivation, an adapter with a rotary device to the seeders is offered. It consists of a transverse beam of a frame, on which, with the help of brackets, there are sections of a non-rotating rotary body. To copy the field profile, each section is provided with a parallelogram suspension and a spring-loaded rod. In addition to the transverse beam of the adapter frame consists of two auto-scraps, which serve for aggregating with the tractor, and auto-coupling with a drill, connected by a longitudinal beam. The testing of research results has been carried out, which confirms the efficiency and expediency for use in the farm of the PP agricultural firm «Anastasia» in Globyno district, Poltava region.

scholarly journals Electrification of agricultural mobile power facilities based on the traction and energy concept of technology development

2020 ◽  
Vol 21 (4) ◽  
pp. 260-270
Author(s):  
Yurii F. Lachuga ◽  
Dmitry S. Strebkov ◽  
Zakhid A. Godzhaev ◽  
Ivan Ya. Redko
Keyword(s):  
Alternative Fuels ◽  
Technology Development ◽  
Physical Nature ◽  
Design Stage ◽  
Industrial Complex ◽  
Operating Modes ◽  
Energy Concept ◽  
Energy Flows ◽  
External Conditions ◽  
Supply Systems

An important component of complex integrated energy supply systems is the electrification of mobile power facilities of the agro-industrial complex, which will significantly affect the synthesis of energy systems. The basis of mobile energy facilities are multifunctional energy technology complexes (MEC) of the traction-energy concept with multi-channel distribution of energy flows of different physical nature. Based on the logical analysis of the mobile MEC, a technological scheme consisting of three subsystems is constructed: 1) factors of external conditions; 2) general design and layout solutions; 3) energy and operational properties of the mobile MEC. Energy connections are established between these subsystems and the system elements. A differentiated method for evaluating the energy efficiency of using alternative fuels and an original mathematical model of the generalized mobile MEC have been developed, which will allow determining the type of MEC, optimal design and layout solutions, operating modes and parameters at the design stage.

scholarly journals THE CONTACT INTERACTION DYNAMICS OF THE WORKING TOOL OF THE MOLE PLOWSHARE WITH THE SOIL DURING FORMING PROSESS A CHANNEL FOR AN ANTI-FILTRATION SCREEN

2020 ◽  
pp. 81-89
Author(s):  
Olena Solona ◽  
Vladimir Kovbasa ◽  
Igor Kupchuk
Keyword(s):  
Rigid Body ◽  
Contact Interaction ◽  
Large Scale ◽  
Geometric Parameters ◽  
Theoretical Development ◽  
Maximum Efficiency ◽  
Industrial Complex ◽  
Engineering Structures ◽  
Operating Modes ◽  
Working Bodies

Today's realities of agriculture are increasingly prompting the need for the introduction of technologies for subsoil irrigation, as a possible tool to obtain maximum efficiency indicators of agricultural activities of agricultural enterprises. At the same time, the large-scale introduction of intra-soil irrigation technologies at the enterprises of the agro-industrial complex is significantly complicated due to the poor practical and theoretical development of its methods, as well as the lack of extensive experimental verification of this method of irrigation. The development of many processes in the construction of irrigation and engineering structures requires substantiation of the geometric parameters and operating modes of the working bodies that are used to implement these processes. One of the working bodies that is used to form the cavity along which communication is stretched is a mole plow, which, depending on the expected working conditions, may have a different geometric configuration and size. The results of investigations of the interaction of the mole ploughshare with the soil in cavity formation for laying the anti-filtration screen are describe in this article. The authors propose to consider the soil in the form of an elastic-viscous model. By solving the contact problem of the interaction of a rigid body with a deformed medium, the stress components in the soil on the contact surface with the ploughshare are determined, and soil compaction is determined. The components of forces that appear on the surface of the ploughshare because of its interaction with the soil are determined depending on its geometric parameters and the mechanical properties of the soil. This solution is a general approach for the analytical solution of the class of problems of the contact interaction of a rigid body with a deformable medium possessing the properties of elasticity and viscosity.

scholarly journals Experimental research of the quality layer treatment of seeds in agricultural crops by protective and stimulating preparations

2019 ◽  
pp. 44-50
Author(s):  
Ratushnyy, V. ◽  
Kosovets, Yu.
Keyword(s):  
Angular Velocity ◽  
Working Fluid ◽  
Layer By Layer ◽  
Regression Equations ◽  
Experimental Sample ◽  
Operating Modes ◽  
Seed Supply ◽  
Seed Processing ◽  
Working Bodies ◽  
Quality Layer

Purpose. Improving the efficiency of pesticide use by justifying rational modes operation of the working bodies treater for layer-by-layer treatment of seeds with protective and stimulating preparations. Methods. The researchers used the method of planning experiments and the experimental-calculation method. Results. Conducting laboratory and field researches of a prototype developed experimental sample for layer-by-layer treatment by crop seeds with protective and stimulating preparations, and indicators of the quality by seed treatment are determined depending on the operating modes at the working body. Conclusions. Regression equations are obtained to determine the quality layer-by-layer processing of seeds depending on the seed supply, the working fluid supply and the angular velocity by working body, on the basis of which the range of changes in the rational operating parameters by working bodies is established, which ensures the best quality of seed processing: the angular velocity of the working body is 80–120 rad/s, seed supply – 0.8–1.2 kg/s, supply of working fluid – 6–10 ml/s. Keywords: seeds, layer-by-layer processing, protective-stimulating preparations, working body, modes of operation.

Investigating the Regularities of Surface Roughness Structuring while Processing with Surface Plastic Deformation for Calculation

2015 ◽  
Vol 756 ◽  
pp. 79-84
Author(s):  
Ivan Telkov
Keyword(s):  
Surface Roughness ◽  
Plastic Deformation ◽  
Technological Process ◽  
Surface Plastic Deformation ◽  
Design Stage ◽  
Surface Plastic ◽  
Operating Modes ◽  
Roughness Profile

This paper describes the regularities of structuring of surface roughness at surface plastic deformation in order to revise calculation of operating modes at the design stage of the technological process. The formula of roughness profile that allows calculating its general parameters has been obtained.

scholarly journals ОСОБЛИВОСТІ ОЦІНКИ ПАЛИВНОЇ ЕФЕКТИВНОСТІ МОДИФІКАЦІЙ ЛІТАКІВ З БАГАТОДВИГУНОВИМИ СИЛОВИМИ УСТАНОВКАМИ

2020 ◽  
pp. 117-126
Author(s):  
Александр Васильевич Лось
Keyword(s):  
Fuel Consumption ◽  
Power Plants ◽  
Fuel Efficiency ◽  
Weight Ratio ◽  
Design Stage ◽  
Transport Aircraft ◽  
Operating Modes ◽  
Emergency Situations ◽  
Wing Geometry ◽  
Engine Power

When creating modifications of transport category airplanes, fuel efficiency appears in the structure of their parameters.This indicator is very important, since operating costs largely depend on the amount of fuel consumed per unit of work.The problem of evaluating the fuel efficiency of modifications of transport aircraft with multi-engine power plants is considered. It is noted that multi-engine power plants, used mainly on medium and heavy aircraft, contribute to solving a number of problematic issues:– expanding the ability to operate in hot climates and highlands;– improving operational safety in the event of failure of one or two engines in case of deterioration of take-off/landing conditions, runway conditions, icing conditions and other emergency situations requiring increased thrust-to-weight ratio;– expanding the network of airfields used by reducing the sites of continued or interrupted take-off;– the absence of the need to use on the created modification more powerful engines, domestic or foreign, which do not have forced (emergency) operating modes.– However, the use of forced-mode engines in such power plants leads to a deterioration in fuel efficiency of up to 20 percent.For the preliminary design stage of modifications, a model is proposed for the formation of a fuel efficiency parameter while simultaneously replacing the main engines and changes in the wing geometry, which allows reducing fuel consumption for the flight, and thereby compensating for its losses when using emergency modes.This approach was implemented in the process of development of the An-188 operational tactical military transport aircraft, in which the replacement of 4 theater with 4 turbojet engines was coordinated with the necessary changes in the wing geometry, which allowed the military-technical complex to ensure fuel consumption in horizontal flight mode with maximum payload 154 g/t∙km per unit of useful work, i.e., lower than that of competitors-analogues.

scholarly journals Methodology for selecting the rated parameters of power transformers in the town’s electrical distribution networks in settlements

2021 ◽  
pp. 33-43
Author(s):  
Yu.A. Papaika ◽  
I.M. Lutsenko ◽  
IE.V Koshelenko ◽  
P.S. Tsyhan
Keyword(s):  
Load Capacity ◽  
Operating Mode ◽  
Distribution Networks ◽  
Heating Time ◽  
Power Transformers ◽  
Design Stage ◽  
Electrical Networks ◽  
Electric Networks ◽  
Actual Structure ◽  
Operating Modes

Purpose. To substantiate a technique of a choice of nominal power of power transformers for increase of  their use efficiency in distributive electric networks of the cities Methods. Analytical processing of statistical data. Findings. The paper solves the problem of efficient use of the installed power of transformers, their rational choice in the design of urban electrical networks. It was found that the choice of transformers according to classical methods causes a significant error and an overestimation of the rated power at the design stage. The method of reducing this error was developed for selecting the power of transformers of urban electrical networks. This method takes into account the predicted indicators of the operating modes of the equipment, the type of consumers, the load capacity of the equipment, the parameters of the operating mode and the environment, constant heating time of existing types of transformers that can be accepted for installation, the appropriate level of reactive load compensation. Originality The scientific novelty lies in the development of  the method for selecting the rated power of power transformers 6 (20) /0.4 kV urban distribution networks by comprehensive consideration of the parameters of typical consumers and their actual structure, which will effectively use transformer equipment for load capacity during the regulated period of their operation. Practical value. The obtained results show the increase in the efficiency of capital and operating costs by selecting a rational rated power of distribution transformers 6 (20) / 0.4 kV with ensuring the effective use of their load capacity in the conditions of electric grids of cities.

scholarly journals Functional compensators in machine drives

2020 ◽  
pp. 5-9
Author(s):  
P. D. Balakin ◽  
◽  
V. N. Belkov ◽  
O. S. Dyundik ◽  
I. P. Zgonnik ◽  
...  
Keyword(s):  
Mechanical Systems ◽  
Statistical Technique ◽  
Performance Criteria ◽  
Design Stage ◽  
Planetary Gearbox ◽  
Operating Modes ◽  
Margin Of Safety ◽  
Full Knowledge ◽  
Temperature Deformations ◽  
Machine Drives

Real mechanical systems are characterized by real parameters, which include primary manufacturing and assembly errors, force and temperature deformations, and abnormal operating modes, the full knowledge of which is unknown when designing systems. Incomplete knowledge about the object is compensated by using coefficients entered into calculation formulas. The coefficients form the basis of reference literature and are obtained on the basis of generalization of experience in creating objects that are similar in design and purpose. This statistical technique is used to increase the margin of safety, but it does not allow us to obtain optimal performance criteria for the design of mechanical drives in particular. It is proposed to use the principle of designing mechanical systems by giving them the property of adaptation to real parameters at the design stage. The means of adaptation is an additional motion of links to the main one, implemented in particular by functional compensators. An algorithm for the synthesis of a compensator is given on the example of the basic scheme of a friction planetary gearbox

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