05.00.00 Technical science
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Description
The industrial safety on cereal production is currently important due to the severity of the consequences of accidents occurring to them. It should be noted that, despite the considerable efforts of recent years, awareness-raising and supervisory plan towards preventing their occurrence, the lack of attention of organizations operating hazardous production facilities to comply with the relevant standards and requirements allows us to characterize the recent situation in this area quite difficult, as evidenced by statistics. In this article it is clearly illustrated the qualitative and quantitative expression of such an approach in practice. The conceptual framework is disclosed in the light of efforts to carry out industrial safety examination in the conformity assessment of hazardous industrial facilities according to industrial safety requirements in the Russian Federation. The basic methods and technical means used for the prevention of accidents at hazardous production facilities of storage and processing of plant raw materials provide an overview of domestic and foreign producers. The item-description of the system of protection of buildings and facilities of hazardous production facilities is given taking into account the industry specifics. There are specified the key factors meeting modern technical requirements, cost-based position of enterprises, ensuring conditions for safe operation of the storage and processing of plant raw materials
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TRENDS FOR PERSPECTIVE DEVELOPMENT OF AGRICULTURAL TRANSPORT
DescriptionIn this article we present a study of current problems connected with the formation of a park of automobiles, tractors and aggregates for transportation of agricultural products and ways of their solution
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Description
The article deals with the question of tillage with a turnover of reservoir devices for its implementation. We have also identified problems that exist in this process step. The ways of their solutions and their implementation have been proposed as well
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SMALL-SCALE MODELING OF DYNAMIC FACILITIES FOR PROTECTION OF HYDROSYSTEM TAILRACES
DescriptionTo study the formation of plunge basin in the Cheboksary hydroplant, we used a scale model of the spillway dam and all structures in the tailrace, installed in the slot flume. When we passed the flow corresponding to the diversion flow of the hydroplant with a glance to the modeling scale, it was found that the plunge basin was formed behind the end fixing of the spillway apron. To research the dynamic facilities of hydrosystem tailrace protection against erosion, we used a small glass flume with a model of the roundcrested weir. For the experiment, the water-surface elevations were built in the flume without the weir, and the uniform motion area was established. In MathCAD software environment, the curve of the flow of measuring rectangular weir of the flume was created. Because of measurements, the curve of water surface by the flow motion through the round-crested weir was made. As the main criterion for modeling, the criterion of Froude was selected. Scale of modeling of flow parameters was determined. For testing, models of hydrodynamic profile and sail structure with streamforming sluice valves were built. The process of sand washout from the flume bottom and formation of the bottom ridges when installing the profile was photographed. Impact of the profile on the flow and its relation with the formation of the bottom topography were studied. Full-scale values of geometric parameters of the bottom ridges and their movement velocity were established as well
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Description
On the base of the smoothed particles hydrodynamics method, the mathematical model of plasma coating process on details surfaces in the mode of electrical parameters modulation is performed. This model al-lowed optimizing the plasma coating process parame-ters
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APPLYING OF THE QUEUEING THEORY TO MODEL OPERATING MODES OF A LOGGING MACHINE
DescriptionThe results of operating conditions of harvesting forest machines by means of optimization harvesting forest process with application of the queueing theory are considered
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EXPERIMENTAL STUDY OF DIFFUSION OF ENZYMATIC COOKING WHEAT GRANULES
DescriptionThe article describes the process of cooking wheat granules conducted under production conditions of cooking and enzymatic cooking in laboratory conditions. It gives the values of moisture diffusion coefficients and the results of modeling the process of cooking using the equation of non-stationary diffusion method of nets for the implicit scheme. The model takes into account the changes in the moisture concentration of particles in space and time, the temperature change process and avulsion of starch outer layers
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MATHEMATICAL MODEL OF A MACHINE AND TRACTOR UNIT WITH EDM IN TRANSMISSION OF A TRACTOR
DescriptionThe developed mathematical model of the machine and tractor unit with the elastically damping mechanism in transmission of a tractor is given in the article. The analysis of mathematical model of the arable unit on the basis of a tractor with EDM in transmission showed that the MTU mathematical model can be considered as working
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THE DEFORMATION EFFECT OF VM SLIDER MULTI COMPLEX MACHINE SERIES ON PRECISION MACHINING
DescriptionThe article is devoted to the problems of increasing the economic growth of the Russian Federation, the development of high-tech knowledge-intensive manufacturing industries on the basis of a fundamentally new technological order, new unmanned technologies. The measures to improve the accuracy of manufacturing of complex and large-sized parts. Currently, the technical level of many sectors of the economy is largely determined by the level of production of means of production. The basis of these means is the machine tool industry. On the basis of machine tool development we handle a comprehensive mechanization and automation of production processes in industry, construction, agriculture, transport and other industries. We completed a comprehensive analysis of the errors affecting the manufacturing precision parts. The activities for improving the accuracy of manufacture based on VM 32 multi-machine complex series were proposed. We made the analysis of the cutting forces influence and the cross-sectional shape of the slide on its deformation for various types of processing. We determined the optimal shape of the cross section of the slider to increase stiffness and reduce deformation of the slide in metal cutting
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Description
The optimization of constructive parameters of chain brush cutter with chopping elements has been performed. The optimal rotating speed of chain reel, speed of brush cutter and clearance between chain reel and surface has been found