name
Kokorev Gennady Dmitrievich
Scholastic degree
•
Academic rank
associated professor
Honorary rank
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Organization, job position
• Ryazan State Agrotechnological University named after P.A. Kostychev
доцент
Research interests
Повышение эффективности использования мобильной сельскохозяйственной техники, совершенствование её системы диагностирования.
Web site url
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Current rating (overall rating of articles)
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TOP5 co-authors
Articles count: 28
Сформировать список работ, опубликованных в Научном журнале КубГАУ
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REDUCING ENERGY CONSUMPTION IN AGRICULTURAL PRODUCTION (POTATO EXAMPLE)
DescriptionIn recent years, in many countries around the world, much attention is paid to the issues of ensuring of rational use of energy resources, due to a number of objective factors, chief among which are: the lack of own energy resources to meet domestic energy needs; the sharp increase in the cost of production and the production of energy resources; further growth in energy needs; the presence of large potential opportunities to reduce unproductive losses of fuel and energy. In the world, the challenge now is to ensure a gradual but steady transfer of the economy on energy saving way of development. To achieve the goal of reducing energy costs we might use two ways: firstly, the widespread introduction of energy saving technologies, and secondly, the reduction of material production, improving its quality and service. In agriculture, the improvement of the technological process can be carried out using new tillage methods, improving the organization of production and tools. Further development of mechanization in agriculture will contribute to further growth of electrification in the agricultural sector, which will significantly reduce the use of the most expensive and limited energy resources. The article offers a technique of the estimation of the efficiency of consumption of energy in agricultural production. In order to compare the efficiency of machines in the cultivation and harvesting of potatoes, there was conducted an energy assessment of the operations of modern technology. As variables, there were investigated different operation modes of the machine: working speed and working width, depth of stroke of the working bodies. In the process of evaluating energy operations, modern technology to prepare the soil for planting potatoes was determined humidity, mechanical composition and soil type. As a main factor in the analysis of technological methods, we have taken the overall specific energy consumption and specific energy consumption for the digging below tuber formation. Analysis of theoretical researches of agricultural machinery has led to the conclusion that the energy cost of implementing the technological process in the machines of different designs varies
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MATH DESCRIPTION OF THE PROCESS OF THE AUTOMOBILE DIAGNOSING PARAMETER CHANGE
DescriptionThe article shows the importance of math description and grounding the function taking into account the process of changing the parameter when developing the methodology of automobile diagnosing. It is pointed out that after all the prediction error and effort depend on the choice of approximating function. The wrong choice of the function can bring to naught all the efforts to manage safety margin and other parameters of cars elements. One can find the requirements to math description and grounding the function of the parameter change. Based on the analysis of factors influencing the process of parameters change and requirements to math description of this process we have noticed that it is necessary to approximate the change (increase) of the state variable by the chance ordered function with increasing realizations. One can consider the parameter change realization both strictly and not as a monotone function ranging from zero to the limit change of the parameter. We have mentioned that the fore-quoted reasoning with the account of two groups of factors make possible to investigate the parameter change at this or that moment of work as a sum of two random values. We have made a conclusion that they usually express the link between the change rate (for instance, detail wear rate) and the readings of the material properties and functioning conditions (metal skin hardness, unit loading on the detail surface, its relative rate of movement) by the functional determined dependence got as a result of lab tests or theoretical study. In the conclusion, one can see that the analysis of the results of math description of the process of the parameter change is sufficient enough
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THE METHOD FOR CONTROLLING POTATO TUBERS HIDDEN DAMAGES
DescriptionWhile mechanical harvesting of potatoes, about 20-40% of the tubers get damages. Dynamic loads, injuries of the tubers, causing internal damage – which is browning of the flesh of the tuber, which occurs in the process of its storage. At the same time, ways to express control of damage to potato tubers will allow both reducing damage during harvest, and promptly sending damaged potatoes for recycling before the results of mechanical stress for the tubers during harvesting. The definition of internal damage to the potatoes is possible because of the analysis of the different elasticity of the tissues of damaged and undamaged tubers. The value of overpressure of the device is chosen such way that during deformation of tubers there mainly has been compression of the damaged tissues of the tuber, with the least turgor. The degree of damage of samples of tubers is determined by the ratio of the volume of damaged tissues of tubers to the total volume of the sample. We have given the mechanical properties of tissues of tubers, fruits and root vegetables, their structure, dimensional characteristics, it can be assumed that the use of this method of determining internal damage possible for apples, carrots, beets and harvest of other crops. Use of damage control will enable timely identification of hidden damage and make it possible to eliminate their causes, which lead to increase loss products
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Description
Due to the deterioration of the ecological situation in the world, population tends to eat organically grown foods that are grown either without or with minimal use of chemicals. The development of agriculture in this direction leads ultimately to organic agriculture. To improve the competitiveness of this direction, we need more effective agricultural machines, especially in the last phase of cultivation, namely at the stage of harvesting. One of the most difficult scientific and technical problems with the mechanical harvesting of potatoes is not letting vegetable impurities and tops to fall down in the hopper with the potato tubers, which among other things will improve operational efficiency technology. The article reviewed the various methods for removing the tops, as well as their advantages and disadvantages. The article makes a conclusion about the need for potato top separators in harvesting machines. We have also considered a promising device for removing haulm, a conveyor with flexible fingers on the bars and the clamping beater. Тhe most short-lived structural element of the device for removing haulm, reducing reliability of the device, is flexible fingers mounted on rods. We have proposed to use polyurethane as a material for manufacturing flexible fingers
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PROBLEMS OF UTILIZATION MANUFACTURABILITY OF MACHINES
DescriptionThe article contains analysis of consumption of the main natural resources and their use in the automotive industry. It is noted that during the manufacture of the car pollution is obtained in 2 times more than in exploitation. It defines the essence of recycling process (autorecycling) and its ecological components. Activity on autorecycling was expressed through the index of recycling efficiency. We have analyzed the global car fleet and average annual amount of automotive waste, million tons per year. We point out that one of the economic components of recycling is the use of parts and mechanisms of machines ready for further use, by qualitative technical diagnostics with use of diagnostics devices. The problem of utilization technological effectiveness of cars as set of the properties characterizing fitness of a design to utilization at the minimum costs of time, work, means, providing the minimum negative impact on environment and the maximum involvement of components of the written-off equipment in processing or a reuse is considered. The main definitions and factors defining utilization technological effectiveness and its main indicators are given. The main ways of increasing of utilization technological effectiveness of cars are offered and the conclusion is drawn that simplifying dismantling of the car on automobile components, reducing dismantle time, time of draining of everything, the liquids and oils applied at operation, applying environmentally friendly materials, etc., the designer can increase technological effectiveness of the car at utilization. As a result of the solved task we have got ecological and economic effect of vehicle recycling
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Description
The article presents a technical diagnostics of a car as a complex of goals and tasks connected with trouble-shooting of mechanisms and systems in order to eliminate them. We have considered the stages of computer diagnostics of different automobile systems such as diagnosing the engine, the brake system, steering and suspension. We have analyzed their components, the ways of troubleshooting and elimination recommendations. The article presents the main troubles transferred from the electronic control unit. The article also presents the stages of diagnosing the engine including external examination, listening to abnormal noises, checking the operating fluids and the engine management system, diagnosing the basic engine systems and checking the cylinders being filled. The article contains the list of main troubles and their reasons. One can also see diagnosing the brake system, its defects and remedies. The article presents diagnostics and repair of the suspender and graphics describing the check of the dismantled shock strut at the stand and tests of the shock strut without being dismantled. We have analyzed computer diagnostics and the problems it solves
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METHODS OF CHOOSING DIAGNOSED VEHICLE PARAMETERS IN AGRICULTURE
DescriptionThe article presents an analysis of the existing approach to automobiles technical maintenance in agriculture. We have pointed out that in modern conditions it is impossible to forecast the automobiles maintenance operation frequency and as a result its improvement as well. It is obvious that one cannot achieve the considerable increase of maintenance operation efficiency by separate means and there exist the necessity to treat it as a system and use the up-to-date methods to investigate and improve complicated systems. We have made a conclusion that the increase of maintenance operation efficiency is not possible without some rational strategy of maintenance operation and repair. We have shown that the program of maintenance operation and repair being an integral part of automobiles technical maintenance has considerable effect on maintenance and repair quality. As a result, there is some necessity of the developed system of parameters diagnosing and control in technical maintenance and repair. We have shown that to get sufficient diagnose information one needs selection of the controlled parameters which give maximum information about the object technical status taking into account possible characteristics of its operational faults. We have discovered that in order to solve the task it is necessary to have the object’s information pattern, calculation of possible characteristics of the controlled object being in good or bad order due to some parts fault, evaluation of information brought by every parameter and determining parameters to be diagnosed. We have proposed to evaluate the parameters’ information value with the help of information entropy as uncertainty measure that is one of the main concepts of the information theory. Because of solving the task, we have got the aggregate of the controlled automobile parameters orderable according to the amount of information
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ANALYSIS OF METHODS AND MEANS OF DIAGNOSTICS OF BRAKE SYSTEMS OF VEHICLES
DescriptionThe article presents native and foreign bench-top and board methods to test the automobile break systems. One can find information about some native trailer-break stands. We have analyzed their advantages and drawbacks such as low information capacity, high diagnostics processing time, low quality of regulation and maintenance operations due to big influence of the operator’s experience, his knowledge and individual characteristics, and great instability of manual test modes on the results of the investigations. To remove these shortcomings they have had some experiments at MADI in order to develop the module to the brake qualities stand. When using it one can have automatic diagnoses and flow chart is presented in the article. Due to the existing vehicles’ state inspection mode and diagnostic means in our country there appeared new stands for brakes control. One can attribute to these devices a range of brake qualities stands developed and produced at Novgorod plant GARO. These are STS-3, STS-10 and STO series stands for cars, trucks, buses and micro-buses. The article also presents some foreign stands used in Russia such as universal brake stands STM by META firm, the break stand IW7 Eurosystem by MAHARUSSIA firm. We have presented in the article the results of the analysis of simple and complicated board means of diagnosis as “Eftor-2”, “Effect”
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CHALLENGES AND TECHNICAL SOLUTIONS OF USING HIGH-PERFORMANCE TRANSPORT OF AGRICULTURAL MACHINERY
DescriptionMaterial and technical resources form a large part of the costs in agricultural production and determine the level of intensity of agriculture, productivity and competitiveness of the industry. The most important role in agricultural production is played by transport operation, from productivity and quality of which directly depends the volume and the grade of final products. More preferable is tractor transport, particularly for on-farm transport, taking into account the impact of navigation systems on the ground. Continuous growth in the saturation of tractors carried out around the world, improves the performance of tractor transport aggregate by increasing their capacity and speed, either on the road or in the field. However, if you increase the saturation of tractors, it encounters problems related to the deterioration of the controllability of the tractor and transport unit. The reduced controllability leads to an increase of damage to transported agricultural products owing to increased oscillatory processes in the system of "road – trailer – tractor – operator" when driving on-farm trails, deteriorating the smoothness and braking properties. Especially sharp these questions relate to transportation of easy-to-damage agricultural products at farm transportation. The feature of data traffic lies in the sharp drop in grade products (products receive numerous mechanical damages, deteriorating its quality, and lose marketability and accordingly reduced its cost). Influence on fruit and vegetable products of unfavorable factors can lead not only to a dramatic loss of quality at the time of transportation, but also reduce the resistance during further storage. To solve the problems emerging when increasing the saturation of tractors, we have proposed devices, allowing reducing negative impact on the production of elevated oscillatory processes, to increase the permeability and straightness of movement of tractor-transport unit
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Description
The development of agricultural production inevitably entails an increasing volume of traffic and a turnover of goods. Therefore, the issues of increasing transport efficiency, reducing the price of transportations and improving productivity acquire great importance. In most cases, supersize dump trucks used for the transport of agricultural production have much more than 6 tons axle load. Thus, these cars need to have roads with improved surface to each field, which undoubtedly is a significant drawback. Because of the extra movements of harvester dump trucks on the turning strip at the end of the field, it increases expenses of damage and loss of crops and the arrival of heavy machinery in the field leading to soil compaction, that in the end affects the future crop. Transportation of agricultural commodities is most effective when the car arrives directly to the harvester machinery. Such vehicles must have sufficient abilities and capacity of the body comparable with the volume of a combine hopper and has no significant impact on soil sealing. With this method, harvesters do not make extra movements and are not idle. Basic requirements for vehicles used in the harvesting potatoes, are in a more productive use due to increasing the capacity and reducing downtime when loading or unloading and minimizing the level of damage to other tubers. For the transportation of agricultural products there is a different transport technology, which either do not fully meets the requirements of transportation of highly fragile product, or has a significant cost. Therefore, we require a specially equipped vehicle bodies, with a competitive ability in the range acceptable to the Russian Federation. As one of the innovative developments, this article proposes a tipper body of the vehicle for transportation of highly fragile agricultural products. The proposed design solution for the tipper ensures a uniform unloading of transported products from the vehicle body and prevents arching issues