Scientific Journal of KubSAU

The role of transport in agricultural production is considerable. It is a connecting link in a single technological chain of the agroindustrial complex of the country (RF AIC). In intraeconomic transportation in the RF AIC, along with cars, we widely use tractors. Rational application of wheeled tractors in intraeconomic carriage substantiates the possibility of their movements both on asphalted and dirt roads. A specific share of tractor transport in domestic agriculture amounts 22-27% of the total transport transportations and 50-60% of intraeconomic carriage. There is a high level of the usage of tractor transport in Western European countries and in the United States. In farms of leading Western European countries (Germany, Italy, France and others.) there is about 70-90% of intraeconomic carriage performed by tractor transport. One of the most substantial and difficult tasks is to fight with damage and losses of agricultural production, in which a very responsible role has been assigned to automobile and tractor transport as an important link in the AIC. According to the analysis of materials for the preparation and use of potatoes and apples, more than 15-20% of the products do not reach the consumer. Low quality of the use of vehicles during transportation is a problem. Transport costs in the prime cost of produced products in rural areas reach 30-40% or more. Lowering them will further influence the development of the agroindustrial complex. Thus, the creation of new of scientifically grounded decisions in designs of vehicles for intraeconomic carriage that enhance preservation and performance of potato harvesting and apples in the conditions of Russia's AIC is the actual scientific and technical task. Its solution makes a significant contribution to the development of the country, as well as it contributes to the implementation of breakeven, competitive manufacture

This article discusses the results of the studies of faculties and staff of Ryazan State Agrotechnological University named after P.A. Kostychev, confirmed with RF patents

The article considers the possibility of using a potato harvester with an unloading device. The principle of operation of an unloading device based on a potato harvester is presented. The unloading device of the root-harvesting machine allows to prevent damage to tubers by damping the speed and lowering the height of the falling heap due to the use of the unloading gutter equipped with a lifting-lowering mechanism made of two differently inclined flat sections, on the inner surface of which, across the gutter, elastically deformable elements are fixed in the form loop absorbers. A group of authors carried out a comparative assessment of the tests of the basic model of the AVR Kolnag potato harvester Spirit 6200 and its improved experimental version with an unloading rating device. The studies were conducted on the fields of the Danko farm of the Lukhovitsky district, Moscow region in 2018 - 2019. Harvesting was carried out alternately from several fields. According to the data obtained, it was found that the level of damage to potato tubers when using the developed experimental version of the unloading device of the potato harvester is 2.1%, which is lower in comparison with the basic model of the harvester. The obtained results of field studies of the experimental unloading device confirmed the results of previous theoretical calculations and laboratory studies, including the high efficiency of the developed device compared to the serial analogue

Today, the main goal of the State Program is to ensure food independence of Russia within the framework of the Food Security Doctrine, which includes accelerated import substitution, namely the creation of new technologies in the field of potato storage, which in turn will reduce the supply of agricultural products from abroad. But, despite the existing success, the problem of potato losses during transportation and storage still remains in the Russian Federation, comprising from 30% to 40% of the grown crop, in many cases, by the end of storage, losses reach 60%. This article describes a container for transporting and storing potatoes in storage. The disassembled container is transported to the place of loading of the product, where it is mounted and loaded with potatoes. When loading containers for storing potatoes in order to reduce damage, various types of shock absorbers are used. One of the simplest absorbers is the rubberized fabric belts, which are deflected between the opposite edges of the container. The location of the belts, their width and the distance between them will determine the passage of potato tubers when they are loaded. Successful implementation of the presented design will help reduce mechanical damage to tubers and increase the safety of agricultural products

The research results presented in this article are intended to familiarize themselves with promising avenue to improve the quality of potato harvesters by improving the process of separation, as well as working bodies for its implementation

While 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

The carried out analysis studies the influence of various factors on the preservation of agricultural products and shows that it is largely determined by design features of machinery and technological methods of use. The efficiency of agricultural and mobile trailer machines has been forming by service and storage. Low quality of work associated with the storage of agricultural machines is conditioned by the fact that the lack of financial capacity of rural producers on acquisitions of modern equipment and materials for carrying out the preparation of for long storage, and also the construction of modern agricultural machinery storage sites. If a car can be fully or partially protected from the solar radiation, rain and snow, simply by removing it in the room, under a canopy or covered with a protective cover, by the formation of condensation on the surface of the machine units and parts these ways to protect do not work. Enhancing of preservation of agricultural machinery is possible when protecting the vehicles from atmospheric precipitation in the form of snow and rain, influence of solar radiation, and also due to the change heat exchange processes of the machine with the environment that prevents the formation of moisture condensate on its surface, ie. we have to create conditions when cooling rate at which the surface of the machine would be equal to or less the rate of cooling air. This is possible through the use of a special design, which would prevent the intense heat radiation of the machine into the environment, ie, would reflect heat rays using its surface and return them to its surface and thus fulfill the role of the heat shield

At the present time there is a problem in storage of agriculture machine-tractor park, because when operating of agricultural machinery parts thereof are covered by contamination. The most heavily becomes dirty machinery working in the toughest conditions. Pollution promotes decrease the operational reliability, accelerating of corrosion and aging, reduce the quality of maintenance service and performance technique. One of the number of important factors when setting technique for storage is the clearing of by of various types pollution, because the during storage of cleaned surfaces, components and parts are subjected still greater destruction and corrosion. Removal of various kinds of pollution is an important technological process which has a significant impact on the preservation of appliances, performance of work, the quality of the repair and maintenance of cars, culture, production and human health. The article contains a classification of contamination depending on the difficulty of their removal and density, basic information on techniques and devices for purification of units and parts of agricultural machines, as well as on substances used for this. We have reviewed bombardment of surfaces with contaminated carbon dioxide ice particles that leads to its full destruction. We have improved technology and created a universal device and the experimental plant for cleaning parts and assemblies prior to storage, which are not only inferior, but also in the majority superior to technical and economic performance of existing analogues

Fruit harvesting is the final and decisive operation in the general work plan for growing fruit, which largely determines the qualitative and quantitative indicators of production and economy of industry in general. Increasing productivity by improving the safety of fruits and vegetables is a priority and not an easy task. For example, the use of cleaning technologies with the use of machinery for harvesting of apples by shaking can significantly reduce the time of gathering fruit compared to hand harvesting. This technology may be applicable, if the fruit is grown for the manufacture of juices, jams, etc. Currently, in several European countries and in the USA, they widely use fruit harvesting platforms and machines. The leader in the production of fruit harvesting platforms is Italy. To reduce the damage to fruit in agriculture, the analysis of the traumatic factors is of great importance, with the analysis of available machines and their subsequent modernization with the aim of improving the reliability and quality of harvesting and transport process, taking into account of the algorithm for solving these problems, the creation of new varieties of fruits and vegetables suitable for machine processing, strict compliance with deadlines and agronomic requirements for the performed technological operations, taking into account the savings of energy and resources when using mobile technology. In addition to the modernization of the machines for efficient operation, it is necessary to improve also the scheme of planting of gardens and methods of cultivation, transfer horticulture to intensive way of development

Based on the previous investigations we have underlined the need to increase fruit and vegetables preservation quality while transporting them from the producer to the consumer at the expense of improving the road transport operation for its intended purpose. We have made a conclusion about the need to develop strategies for maintenance and repair as for the actual technical state at the expense of developing the diagnosis system based on the development of a math model of changing the technical state of the diagnosis object, developing a method of rational set of objects to be diagnosed and determining the technical state optimal control frequency. We have confirmed that the above mentioned is possible when considering the system of technical operation of road transport as an organization-production system and applying the engineering-cybernetic approach to improve this system. We have considered the basic requirements for the efficiency indexes when investigating and improving the operation system that will allow achieving the aim we have had and can be described mathematically. We have made a conclusion about the urgency of the issue we studied and the possibility to develop the efficient operation system of road transport based on the provided criteria