Evaluation of the quality of the execution of the technological process with a disc-chisel-4,5 according to the established criteria.
The purpose of research. To establish agrotechnical efficiency of technical-technological solution of Claydon seeder at sowing of industrial crops on the basis of analysis of experimental data of quality of sowing of sunflower by a tape spreading way, to define quality of sowing on a condition of crops in critical phases of growth and development of plants. Research methods. Engineering analysis of the structure. Observation and determination of biometric indicators of plants in crops based on cluster analysis of plant development. Results and conclusions. When sowing sunflowers with a Claydon seeder, compared to the control, more acceptable conditions for the development of each plant are created - the feeding area and its shape are optimized, competition and mutual shading of the leaf surface are reduced on the basis of a 56% improved aspect ratio, competition and mutual shading of the leaf surface are reduced, the competitive influence of neighboring plants is delayed for 5-7 days, the weighted average weight of the basket increases by the time of harvest increases by 10-20 %, more than doubles the preservation of plants up to the harvest period, which creates potential conditions for higher yields. Claydon seeder can be used as an alternative to precision seeders when sowing sunflowers, which, given its traditional use - sowing seeds of cereals and other crops - can significantly reduce the cost of economic entities for technical re-equipment, accelerate the pace of renewal of machine-tractor fleet the economy with modern, highly productive equipment and introduce energy-saving, innovative technologies of crop production. Keywords. Seeders, sowing methods, sowing quality, plants, biometric indicators, biological yield, machine-tractor fleet, technical re-equipment.
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.
Summary The purpose of research. Evaluation of the quantitative and qualitative parameters of the wear of the disc working bodies of the DL-2.5 soil tillage unit on the basis of monitoring their condition during tests in the conditions of experimental operation over a 6-year period and forecasting the possibility of further operation of the unit. Research methods. Analysis of the machine design, determination of the linear dimensions of discs by standardized measurement methods and statistical data processing. Research results. The intensity of the wear of the disk working bodies depending on the earnings, the forecast of the resource before the loss of quality is established. Conclusions. On the basis of experimental studies, objective and reliable information was obtained about the parameters of the wear of the disc working bodies of the DL-2.5 soil-cultivation unit in the conditions of economic operation in the forest-steppe zone of Ukraine. During the six-year period of testing, with a total volume of work performed by the unit of 2430.6 ha (2017 – 395,4 ha; 2018 – 413,3 ha; 2019 – 456,3 ha; 2020 – 357,6 ha; 2021 – 400,0 ha; 2022 – 408,0 ha) and the achievement of cultivation per disc - 120 ha, the wear of the working edge of the discs of the front and rear rows amounted to 21,1 mm and 11,5 mm, respectively, for the permissible value of 35 mm, or in percentages, respectively - 60,2 and 32,8. Accordingly, the estimated residual resource is forecast at the level of 39,8 % and 67,2 %. According to the results of resource tests during 2017-2022, the unit maintained its operable condition, provided the necessary regulation, aggregation, transportation and had an aesthetic appearance. The obtained results can be used by machine builders as an informative base for fine-tuning disks and forming standards for their performance, and by manufacturers of g. products, as information on the choice of reliable equipment and the potential of its service life. Prospects of research in this direction consist in the possible multiplicity of accounting for the general conditions of operation of disk tools, the variability of structural and technological schemes, and can also be used as methodical material for p. g. machines that have discs in their composition. Keywords: soil tillage unit; trial; disk working body; boring steel; wear and tear; projected resource.
To establish the connection and dependence between the elements of different groups of factors - evaluation of the quality of work, technical parameters, technological modes and working conditions - of the “thresher of a grain harvester” system. Based on them, develop a graphic model and an optimal plan for multifactor studies of thresher performance indicators during its mathematical modeling.
Abstract. The work is devoted to the problems of solving the double problem of agricultural engineering (according to the international definition): "Feed the world and save the planet" using the ability to manage the environmental, energy and economic components of agricultural technologies. It was confirmed that the management process sets the conditions: to plan (program), execute, evaluate and continuously act on the creation and improvement of creative agricultural technologies based on the laws of the historical development of the planet's nature (biosphere laws). Based on these principles, an abstract-logical model of the interconnection of the "environment-agricultural technologies" system, as well as the methodology for a systematic approach to climate-smart agricultural production practices, which will conserve natural resources, while increasing agricultural production, is proposed. Goal of Research. To Improve the model of the relationship between the environment, agricultural technologies and engineering solutions, as well as the methodology of environmental and economic management of agricultural technologies based on climate-smart agricultural practices, with the display of accurate regulation of all its constituent parts, processes and procedures. Research methods. Methods of planning (programming) agricultural technologies or products in accordance with ISO recommendations; agrometeorological parameters, including vegetation indices, achieved by mathematical processing of remote sensing data (RSD) and modeling these parameters, according to the European Union project MARS (MCYFS - MARS Crop Grow Forecasting System); crop growth modeling system CGMS were used. Research results. The developed model of the relationship "environment- agricultural technologies" and the methodology of ecological and economic management the agricultural technologies provides for the implementation of a hierarchical multi-circuit process of modern nature management on a geo-community basis, displaying the precise regulation of all components: forecasting systems; systems of environmental management and defragmentation of technical and technological solutions to the conditions of environmental and economic optimization. Conclusions. The ecological and economic problems at the present stage of development of society in the production of agricultural products are considered. Possible ways of their solution have been determined on the example of an abstract-logical model of the relationship between the environment, agricultural technologies and engineering solutions, as well as the methodology of ecological and economic management of agricultural technologies.
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