Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini最新文献

{"title":"ANALYTICAL REVIEW OF TECHNICAL SOLUTIONS OF NEEDLE ROTARY TOOLS FOR APPLYING LIQUID FERTILIZERS TO THE SOIL LAYER","authors":"V. Vetokhin, I. Negrebetsky, T. Ryzhkova, Y. Salo, T. Voznyuk","doi":"10.31473/2305-5987-2021-1-29(43)-9","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-9","url":null,"abstract":"The purpose of the research is to identify trends in the technical development of needle rotary means for injecting liquid mixtures into the soil layer, taking into account the essence of the technological operation, as a control action to change the state of the soil. Research methods - analysis and generalization of essential features of technical solutions of needle tools for processing and applying liquid fertilizers to the soil layer. In order to develop criteria for evaluating technical solutions, scientific research on the classification of tools of this type and generalized interpretations of the essence of technological operations of tillage, application of chemicals, sowing, etc. were preliminary analyzed. Research results. An analysis from the point of view of the possibility of controlling the process and the degree of its implementation by a specific instrument allows to assess the place of a specific tool in the development stage. In accordance with the \"System of properties and indicators of soil condition\" [Vetokhin 2009], any introduction / extraction of matter, energy and / or information is considered a controlling factor in changing the state of the system, the ultimate goal of which is to change the level of metabolic processes and, as a result, to change the yield. An increase in the information component of processes is considered to be a tendency in the development of agricultural technologies and technical means aimed at a radical reduction in resource consumption [Vetokhin, Altybaev 2019]. One of the first technical solutions of needle tools for applying liquid to the soil layer is known from the American patent of 1898 [Morris, 1898]. The aim of the inventor is to provide a device adapted to form a hole in the soil for receiving a plant and supplying water to the hole. The current state of the development of technical means is illustrated by the invention, patented in the USA, RF and EU, \"Systems, methods and devices for the introduction of agricultural liquids\" [Stoller et al., 2020], [Radtke et al., 2020], [Levy et al., 2015]. A qualitatively new level is achieved by the inclusion of sensors of the current state of the soil in the process control system. Sensors come in contact with the soil to monitor its condition, in particular, density, temperature, humidity, percentage of carbon, organic matter, potassium, phosphorus, nitrogen, etc. In a fluid delivery system, each of the outlets is connected to separate sources of input material and may contain dissimilar fluid materials, for example, different types of fertilizers, liquid insecticides. Conclusions. It has been established that the technical solutions of needle tools have been developed from manual devices of periodic action to rotary needle tools of continuous action for dosed application of complex fertilizers and simultaneous loosening of the soil. The next step in technical development is to expect the creation of automated complexes with rotary needle worki","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48070168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MILKING EQUIPMENT OF \" YALYNKA\" (“HERRINGBONE”) \"EUROCLASS 1200\" TYPE TESTING RESULTS","authors":"V. Smolyar, V. Rozhenko","doi":"10.31473/2305-5987-2021-1-29(43)-8","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-8","url":null,"abstract":"Abstract The purpose of the research is – to evaluate the milking platform of \"Yalynka\" (\"Herringbone\") \"EuroClass 1200\" type manufactured by \"GEA\" (Germany) for milking cows based on the results of experimental testing. Research methods. During the testing of the milking parlor \"Yalynka\" \"EuroClass 1200\" type the quality of the technological process was determined using the methods described in ISO 5707:2007, ISO 6690:2007, DSTU 7435:2013 and DSTU 3662:2018, operational-technological and economic evaluation was carried out according to DSTU 8424:2015 and DSTU 4397:2005, safety and ergonomics of the equipment were determined according to DSTU EN ISO 12100:2014. Research results. According to the results of experimental testing, it was established that the milking parlor \"Yalinka\" \"EuroClass 1200\" type of German production at the appropriate level performs the technological process of machine milking of cows. The obtained research results showed that the average total milking time of one cow is 5,07 minutes, the average intensity of milk excretion as a whole during milking – 2,35 kg / min. Milk obtained during milking cows in terms of quality corresponds to the grade \"Extra\" in accordance with DSTU 3662: 2018. Devices for controlling the process of milking cows \"DemaTron 70\" and computer herd management system \"Dairy Plan C21\" perform the technological process of milking cows in automatic mode, control over the implementation of technical parameters of the milking process, milk accounting and shutdown of milking machines. Based on the results of conformity assessment of the construction of the milking parlor \"Yalinka\" \"EuroClass 1200\" type in terms of safety and ergonomics, it is established that it meets the requirements of DSTU EN 12100: 2014 and DSTU 60204-1: 2015 for items related to its design, which is the evidence base of its compliance with the Technical Regulations for the Safety of Machinery and the Technical Regulations for Low-Voltage Electrical Equipment. Productivity of the milking installation-platform makes 70 heads / hour. Serves the milking parlor 2 operators of machine milking. Electricity consumption per milking a cow is 0,13 kWh. Annual operating costs are 4247 UAH / head in the conditions of 3 times milking of cows. Conclusions. For the first time in Ukraine, experimental testing of the milking parlor \"Yalinka\" \"EuroClass 1200\" type showed that the equipment satisfactorily performs the technological process of machine milking of cows with their loose housing and provides milk of the \"Extra\" grade. The «Euroclass 1200» «Yalinka» milking parlor is characterized by a high technical level and can be widely used in Ukraine.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44671804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESEARCH OF ELEMENTS OF TECHNICAL REGULATORY REGARDING THE INTRODUCTION AND OPERATION OF AGRICULTURAL AND FORESTRY TRACTORS","authors":"T. Tsema, S. Afanasieva, S. Ryzhkova","doi":"10.31473/2305-5987-2021-1-29(43)-1","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-1","url":null,"abstract":"The purpose of the study is to analyse the quantitative and qualitative composition of registered and registered in Ukraine in 2020 agricultural and forestry tractors (hereinafter - tractors) and to identify areas for improvement of technical regulatory elements for their commissioning and operation. Research methods. The methodological basis of the work is the analysis and generalization of data on registered and registered tractors, as well as certain elements of technical regulation (technical regulations, standards, procedures for assessment and confirmation of conformity). Results. To summarize the structure of data on tractors, an analysis of their quantitative and qualitative composition, namely new (2018-2020 years of production) and first commissioned in 2020 in Ukraine wheeled and tracked tractors, based on the report of the State Food and Consumer Service of Ukraine for 2020 [Register ( open data), 2020]. The results of the analysis showed that for the first time in Ukraine mostly new tractors are registered (96 %) and only about 4 % - imported, used tractors. Analysis of the distribution of registered new tractors by origin showed that about 60 % of new tractors are Chinese tractors, the vast majority of which are small tractors, about 22 % ― Belarusian production, domestic serial tractors are a small percentage ― within 6 %. Some elements of technical regulation used for putting into operation and operation of tractors in terms of their efficiency (technical regulations, procedures for confirmation of conformity and registration) are analysed. The results of the research are generalized and the directions of improvement of the elements of technical regulation on the commissioning and operation of tractors in Ukraine are determined. Conclusions. Taking into account the results of research on the structure and origin of tractors placed on the market and put into operation in Ukraine, analysis of the provisions of current regulations, it is determined that the issue of putting into operation and operation of single models of tractors, agricultural and forestry trailers remains unresolved. , trailer vehicles (hereinafter - vehicles), in particular the type of which is not approved in Ukraine, as well as used, converted, etc. Therefore, the current technical legislation governing the introduction of mass-produced vehicles covered by the Technical Regulation approving the type of agricultural and forestry tractors, their trailers and replaceable trailers, systems, components and individual technical units [CMU Resolution № 1367 of 28.12.2011] (hereinafter ― the Technical Regulation of type approval 1367/2011) must be supplemented by regulations, which establish the requirements and procedures for confirming the conformity of individual models of vehicles. This will allow for a more complete settlement of the issue of admission to traffic of safe vehicles.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49269934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CONSTRUCTION-TECHNOLOGICAL SCHEME AND PARAMETERS OF EQUIPMENT FOR ULTRASOUND DISINTEGRATION OF PLANT RAW MATERIALS","authors":"V. Bratishko","doi":"10.31473/2305-5987-2021-1-29(43)-2","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-2","url":null,"abstract":"Purpose of the study. Improving the efficiency of ultrasonic disintegration of plant raw materials based on the search for rational (in terms of ensuring the required level of disintegration of plant raw materials) parameters of the cavitation chamber, properties of the suspension, and processing modes. Research methods. Methods of analysis and generalization of the results of scientific research of the processes of ultrasonic treatment of liquids and suspensions were used to substantiate the rational design and technological scheme and parameters of equipment for ultrasonic disintegration of plant raw materials. The results of the study. Acoustic piezoelectric cavitators with a low (up to 5.0 W/cm2) intensity of ultrasound, which is introduced into the liquid or suspension through the bottom (walls) of an open non-resonant cavitation chamber, are the most suitable for cavitation treatment of aqueous suspensions of plant bioresources. Ultrasonic emitters in this case are rigidly attached to the outside of the bottom (walls) of the cavitation chamber. Based on the analysis of research results, the design of a device for ultrasonic treatment of suspensions of plant raw materials was proposed. Conclusions. It is established that the main parameters determining the efficiency of the process of ultrasonic disintegration of plant raw material suspensions are the presence of an effective layer and rational intensity of ultrasonic influence on the medium in the cavitation chamber, which depends on the physical and mechanical properties of the treated medium. Based on the analysis, a structural and technological scheme of the device for ultrasonic treatment of suspensions is proposed.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46259854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"REQUIREMENTS FOR CREATING CONDITIONS FOR KEEPING ANIMALS ON DAIRY FARMS","authors":"V. Smolyar","doi":"10.31473/2305-5987-2021-1-29(43)-20","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-20","url":null,"abstract":"The purpose of the research is – to develop requirements for creating comfortable conditions for keeping farm animals, taking into account EU standards, during milk production on farms. Research methods. During the development of requirements for the creation of comfortable conditions for keeping farm animals, taking into account EU standards, in the process of milk production on farms used the following basic regulations: Council Directive 98/58/EU, Council Directive 91/629/EU, Council Directive 92/46/EU, Commission Directive 89/362/EC. Requirements in the field of milk production, adapted to EU standards, are systematized by the following components: keeping, feeding, watering animals, milking cows, milk cooling, manure removal, creating a microclimate, veterinary care. Research results. In practice, during milk production it is necessary to create free, comfortable conditions for keeping cattle. Convenient access of service personnel to the place of calving of cows should be provided. In the conditions of the maternity ward, the technological areas should be 8-10 m² per cow. Young cattle, including calves, should be provided with a clean and dry rest area, protected from drafts. According to EU regulations, calves up to eight weeks of age can be kept in individual cages or in group cages. According to EU Council Directive 97/2, calves older than 8 weeks of age are kept only in group cages. In accordance with the EU Directive 97/2 technological areas for keeping young cattle with a live weight of up to 150 kg - must be at least 1,5 m² / head., Live weight 150 - 220 kg – 1,7 m² / head., Live weight 220 kg and more – 1,8 m² / goal. Technological areas for keeping animals with a live weight of 200 to 500 kg - from 2,7 to 4,7 m² / goal. The feeding front for young cattle with a live weight of 200 to 500 kg is from 0,4 to 0,6 m / goal. The technological area in the section per cow must be at least 6 m² / head. Rational sizes of boxes for rest of cows: width 1,2 m, length (near a wall) - 2,6 m, length (in paired boxes) - 2,45 m, height of a protection of a box - 1,1 ± 0,05 m, an inclination boxing floor towards the manure passage 5 ± 1%, the height of the boxing floor above the level of the manure passage 0,2 – 0,25 m. The width of the rest area of cows must be at least 6 m. In accordance with EU Council Directive 98/58 must be provided free access of animals to feeders and feed. EU Commission Decision 97/182 states that priority should be given to the feeding of whole milk substitutes when feeding calves. A feeding front for cows must be provided – 0,7 ± 0,05 m. In accordance with EU Council Directive 98/58, free access of animals to drinking troughs and water must be ensured. According to European standards, the total bacterial contamination of milk should be - ≤ 300 thousand KUO / cm³, the number of somatic cells in milk - ≤ 400 thousand /cm³. Drainage of wastewater from milking parlors, household premises of the farm is carried out using a separa","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43039916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FORMATION OF ENERGY EFFICIENT SYSTEMS FOR PROVIDING ABIOTIC FACTORS IN ADAPTIVE TECHNOLOGIES OF CULTIVATION OF UTERINE ENTOMOCULES","authors":"N. Pishchanska, V. Belchenko, V. Targony","doi":"10.31473/2305-5987-2021-1-29(43)-21","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-21","url":null,"abstract":"Abstract. Energy-efficient systems that will enable the implementation of abiotic conditions - important components of adaptive technologies, such as air temperature, relative humidity, air mobility, lighting levels, etc., must meet the requirements of environmental friendliness and minimize economic and energy costs. This requires the use of modern energy efficient technologies, equipment and devices. The purpose of the research is the development of a system for providing abiotic factors in the implementation of adaptive technologies for crops of guaranteed quality, characterized by resource savings and environmental safety. Methods. Analysis of the introduction of technologies and equipment in the process of cultivation of uterine entomocultures, which will increase the efficiency of technological processes of entomoproduction production. Results. The key abiotic factors in adaptive technologies of cultivation of uterine cultures are determined. Technologies, equipment and devices for their provision are studied and the initial requirements to the energy efficient systems consisting of them are formed. Conclusions. The analysis showed the advantages of using film contact devices and ultrasonic ones for energy treatment in adaptive technologies of cultivation of uterine entomocultures in terms of energy efficiency by almost 20% and efficiency by 15%. To ensure the required type and level of lighting, it is recommended to use incandescent lamps and LED lamps. Nozzles with nozzles and perforated panels are defined as distributive elements for air supply, which will almost double the efficiency of using the potential of the air prepared by the microclimate system.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47775308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESULTS OF STATIC TESTS OF PROTECTIVE STRUCTURES OF AGRICULTURAL TRACTORS CABINS","authors":"S. Postelga","doi":"10.31473/2305-5987-2021-1-29(43)-7","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-7","url":null,"abstract":"The purpose of research is determination of cabin deformation indicators using standardized methods and developed technical means. Research methods. The tests were performed according to the methods described in [DSTU ISO 5700, 2019] using a loading bench, pressure and displacement sensors, digital measuring amplifier Spider 8 and laptop Panasonic CF-19 Touchbook, model: CF-19KHR88PE. Research results. The protective structure AI.209.45.011.00 of the cab of tractors type C25 \"Slobozhanets\" was provided for testing. Before the tests, the dimensions of the cab structure were measured and recorded. During the first longitudinal loading from front to right, the load was applied to the upper transverse element of the protective structure. The point of application of the load was at a distance of 260 mm from the outer corner of the edge of the protective structure. An even load distribution in the direction perpendicular to the direction of action and along the loading beam was ensured using a sealing element. The value of the energy absorbed by the protective structure was 13100 J (required energy - 12586 J) with a maximum applied force of 82 kN and a displacement of 340 mm. During the first and second compression tests, the structure was loaded vertically with a force of 180 kN along the front and rear upper transverse elements of the protective structure with a holding of the specified force for 5 s. The side load was applied horizontally to the upper right longitudinal element of the protective structure at a distance of 85 mm forward from the control point of the driver's seat. The length of the loading beam was 600 mm. The value of the energy absorbed by the protective structure of 17000 J (required energy - 15732 J) at a maximum applied force of 80 kN and a displacement of 290 mm was achieved. After all test stages, the frontmost point of the protective structure was 70 mm and the front left point was 35 mm. The rear end points were also shifted backwards by 45 mm - right and 30 mm - left. In the lateral direction, the front right extreme point moved forward by 15 mm. After the tests, the free space area was not violated. Conclusions. The methods and technical means used during the tests allow determine the magnitude of the applied forces and deformation with the necessary accuracy and reliability. During the compression tests, the values of the test force (180 kN) were achieved, and during the application of horizontal loads - the energy absorbed by the protective structure (13100 J - longitudinal load and 17000 J - lateral load). The greatest final deformation was suffered by the protective structure at the front extreme point - 70 mm, while the violation of the zone of free space of the driver by the elements of the protective structure is not observed. Therefore, the protective structure AI.209.45.011.00 cab of tractors type C25 \"Slobozhanets\" withstood static tests for compliance with DSTU ISO 5700.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47775512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EVALUATION OF THE ACCURACY OF EVPOTRANSPIRATION IN THE EVAPO MOBILE APPLICATION","authors":"R. Vozhehova, P. Lykhovyd","doi":"10.31473/2305-5987-2021-1-29(43)-11","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-11","url":null,"abstract":"Abstract The article presents the results of the study on the accuracy of evapotranspiration in the EVAPO mobile application. The aim of the work is to provide recommendations on the effective use of the mobile application for the prompt, low-cost and convenient determination of evapotranspiration and planning the irrigation regime. Materials and methods. The study was conducted in the autumn of 2020 and in the summer of 2021 using meteorological data from Kherson Regional Hydrometeorological Station, which were used for reference calculations of evapotranspiration according to the method recommended by FAO (Penman-Monteith equation) in the ETo Calculator software. The calculated values of the reference evapotranspiration and those obtained in the EVAPO mobile application were compared with each other through the computation of the correlation coefficients, determination coefficients and mean absolute percentage errors to assess the accuracy of the data on the studied agrometeorological index in the mobile application. Statistical calculations and graphical models were performed using Microsoft Excel 365 spreadsheet processor. Polynomial regression was applied to calibrate and enhance the performance of original EVAPO application. Results. It was found that the EVAPO mobile application without additional calibration cannot provide the proper accuracy of the evapotranspiration calculation. During the cold period of the year (October-November) the mean absolute percentage error was 137.02 %, and during the warm period (May-August) it was 41.43 %. The general error of the calculation in the mobile application compared to the ETo Calculator reference values was 88.75 %. At the same time, EVAPO makes it possible to accurately track the trend of evapotranspiration dynamics, the coefficient of determination of the model is 0.86. In the warm period of the year, there is a tendency to overestimate the value of evapotranspiration, and in the cold period of the year, no clear pattern was found. The evapotranspiration values adjusted by the polynomial regression model obtained in the EVAPO mobile application allow their use in operational irrigation planning. Conclusions. The EVAPO mobile application is a convenient, accessible tool for the rapid assessment of evapotranspiration. However, its implementation on the territory of Ukraine cannot be recommended without preliminary calibration for each specific agroclimatic zone due to enormous errors in the estimation of evapotranspiration value.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49193696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"METHODOLOGICAL APPROACHES TO ACCELERATED TESTS OF CRUSHING KNIVES OF GRINDING CATS. COMPARATIVE TESTS OF LOSS OF CUTTING CAPACITY","authors":"L. Shustik, V. Pogoriliy, T. Gaidai, S. Stepchenko, S. Sidorenko","doi":"10.31473/2305-5987-2021-1-29(43)-10","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-10","url":null,"abstract":"Abstract. The purpose of the research is to analyze the design features and parameters of grinding knives to compare the intensity of loss of cutting ability of each of the models of knives depending on the load cycles. Methods and materials. Conduct an analytical inspection and instrumental studies of the blades of grinding rollers type KR with different design features. Carry out bench accelerated tests based on the cyclic impact load of the knife fragment due to falling on the simulator of wear cycles and check the residual cutting capacity on the cutting simulator. Justify the coefficient of acceleration of tests as a derivative of hardness and density of the simulator, as well as the ratio of the energy of the fall of the knife fragment on the stand and its rotational motion in the field. Statistical analysis of experimental data was performed by analysis of variance and interpreted by standard computer programs Excel in the form of graphs. Results. Analyzing the proposed method for determining the intensity of loss of cutting ability of the knife when it falls on the simulator of plant debris allowed to rank different models and establish their relative resource. Unhardened models of both 45 and 30MnB5 Steel provide low life and their residual cutting ability is only 15-25% compared to hardened models. Analyzing the research results, the hardened model of a knife made of 45 Steel withstands 4 times more load cycles compared to unhardened models, but is inferior to the hardened model of Steel 30MnB5 (borista), which has the highest resource. Even after 150 load cycles (in terms of the work of a roller with a width of 12.5 m - operating time of more than 1000 ha), it retains more than 55% of the initial cutting ability, which is characterized by low intensity of its loss. Conclusions. According to the tests of the intensity of loss of cutting ability of knives, the most acceptable option for the equipment of roller-shredders is a hardened model made of 30MnB5 Steel (borista), which has the highest resource.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47402402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDY OF SYSTEMS WITH ELECTRODYNAMIC AND ELASTIC CONNECTIONS UNDER HARMONIC EXCITATION","authors":"E. Kalinin, A. Korobko A.","doi":"10.31473/2305-5987-2021-1-29(43)-4","DOIUrl":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-4","url":null,"abstract":"Abstract Purpose of the study is to analyze the operation of a mechanical system with the introduction of electrodynamic and elastic components into it to ensure that the operating modes of the latter go beyond the resonance modes. The tasks of the research involve the synthesis of the mathematical apparatus with the subsequent formation and analysis of the amplitude-frequency characteristics of the specified system. Research methods. The methodological basis of the work is the generalization and analysis of the known scientific results of the dynamics of systems in resonance modes and the use of a systematic approach. The analytical method and comparative analysis were used to form a scientific problem, form a goal and formulate research objectives. When creating empirical models, the main provisions of the dynamics of systems were used. The results of the study. Considering that the dynamic properties of the system depend on the presence or absence of an elastic connection of the transmission line, a combined system was subjected to research. Since it is impossible to obtain an exact analytical solution of the obtained system of nonlinear differential equations, the solution was carried out on an electronic model with harmonic excitation. Based on the results of studies on an electronic model, using the MatLab computer modeling system, it is difficult to establish the influence of the ratio of various parameters, with their possible variations in a large range, on the behavior of the system itself, since a question posed in this way will require a significant amount of computer time. Therefore, a study of the system with harmonious excitation in its linearized form was carried out. Conclusions. A mathematical model of the functioning of a system with electrodynamic and elastic coupling under harmonious excitation has been formed. On the basis of the research carried out, the amplitude-frequency characteristic of the system was built, with the help of which the correspondence of the results of the solution of the electronic (reference), built on the basis of MatLab, and the analytical models was established.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49440363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}