Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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193 kb

EFFECT OF INITIAL CONDITIONS ON TRANSFORMER TRANSIENT CURRENTS

abstract 1421808001 issue 142 pp. 1 – 17 31.10.2018 ru 2
The article dwells on the features of the transition process in the transformer windings under non-zero conditions typical for the modes of drying the trans-former with low frequency currents. The article also shows the effect of non-zero conditions on the cur-rents in the windings and the heating of the windings
549 kb

CALCULATION OF THE VOLUME OF DE-LIVERED BIRD DUNG UNDER FERTILIZER IRRIGATIONS OF TOMATOES IN THE FIRST ROTATION AND CUCUMBERS IN THE SE-COND ROTATION

abstract 1411807001 issue 141 pp. 1 – 18 28.09.2018 ru 2
We have made calculations using the values of dung delivered after the analysis of laboratory research of the soil and irrigation water delivered with organic fertilizers. Based on the data on values of hydraulic resistance coefficients of mixer elements, mixing chamber and diffuser, we found diameters of pressure pipelines, reduced head of NGPR mixer, velocity of flow discharge from mixing nozzles and the mixing chamber. According to the design data of the pump head values, those of the mixer head, the head on inlet into the mixer and head in a reservoir of constant pressure a possibility was received to specify values of factors under studies on location of irrigation system and to test the design data with the help of the experimental value received. A low head system with hydraulic and geometric parameters of mixing is recommended for small farms
555 kb

PARAMETERS OF A DEVICE FOR MAINTAINING CONSTANT FLOW OF LIQUID IN A HYDRAULIC ROW SOWING MACHINE FOR SEEDLING PLANTS

abstract 1411807003 issue 141 pp. 19 – 29 28.09.2018 ru 2
We present results on proving parameters of the device for maintaining uniform flow of liquid in hydraulic row sowing machine for seedling plants. Main difference between row sowing in greenhouse and in field is 10 to 20 times less width between rows. Existing sowing machines (because of little width between rows) can only perform scattered sowing. A method and a scheme of the device for maintaining uniform flow of polydispersed system (working liquid – seeds of seedling plants) are theoretically proved. Parameters of the device for maintaining uniform flow of polydispersed system (working liquid – seeds of seedling plants) are experimentally proved. We have also defined the effect of pipe’s position in the tank on flow of polydispersed system out of it and the effect of polydispersed system parameters (working liquid – seeds of seedling plants) on peculiarities of hydraulic sowing technological process. Testing the experimental row sowing machine for seedling plants determined that this machine adequately performs sowing process and increases productivity 8.3 times compared to manual sowing
151 kb

STANDARD MANUFACTURING SCHEME ADAPTATION FOR A SMALL-SCALE INTRAECONOMIC MIXED FODDER PLANT

abstract 1411807004 issue 141 pp. 30 – 40 28.09.2018 ru 1
The research object are methods of standard manufacturing schemes adaptation for small-scale intraeconomic mixed fodder plants. The standard manufacturing scheme adapts for specific plant by process of elimination of unnecessary additional technological modules in this configuration, or in their changeover by other modules allowing to achieve the required quality level of processing of raw materials or compound feed by changeover of the available technological operations by more perfect and also in adding in the scheme of new modules. The adaptation algorithm of the standard manufacturing scheme for production the compound feeds is developed for the intraeconomic plant. The algorithm creates an opportunity as much as possible to consider specific conditions and needs of specific agricultural enterprise in case of design. Application of the adapted modular technological circuits on the designed small-scale formula-feed plants will allow to increase considerably nutritional value and biological safety of the produced compound feeds
359 kb

METHOD AND MEANS FOR HARVESTING GRAIN CROPS BY STRIPPING WITH THE DIVISION OF THE HEAP IN THE STATIONARY

abstract 1401806001 issue 140 pp. 1 – 16 29.06.2018 ru 80
We have presented methods of designing technologies of winter wheat harvesting by stripping with pile dividing stationary with optimization of harvesting–transport complexes in various conditions
215 kb

EXPERT METHOD OF FACTOR ANALYSIS OF OPERATIONAL RELIABILITY OF COMBINE HARVESTERS

abstract 1391805001 issue 139 pp. 1 – 16 31.05.2018 ru 97
The article reveals the main empirical factors that increase the efficiency of technological systems of grain harvesting. The article shows interrelation and subordination of empirical factors in the practice of operational reliability of grain harvesters, which underlies scientific research. We have defined the basic (key empirical factors) that allowed developing a conceptual model (paradigm) of the research. The article provides a technique establishing the rules of application of the method of expert assessments to identify organizational and technical factors that have the most significant impact on improving the reliability of grain harvesters
583 kb

TO THE QUESTION OF GRINDING ROUGHAGE IN A PRESSED FORM

abstract 1381804002 issue 138 pp. 1 – 10 30.04.2018 ru 99
The article has a classification of fodder shredders developed on the basis of the analysis of the existing technical means for the preparation of fodders. The constructive technological scheme of the grinder for coarse fodder in a pressed form is proposed. The results of experimental studies in solving the optimization problem-finding the optimal combination of constructive-technological factors of equipment are analyzed, in which a predetermined number of all types of feed will be produced with a higher quality. As optimization criteria, the following were chosen: energy intensity, material grinding time, weighted average particle length
334 kb

RESEARCH OF THE INFLUENCE OF ELECTROMAGNETIC FIELDS OF EXTREMELY LOW FREQUENCY ON THE LOSS OF DRY AND BIOLOGICALLY ACTIVE SUBSTANCES OF GARDEN BEET ROOTS IN THE PROCESS OF STORING

abstract 1381804003 issue 138 pp. 11 – 17 30.04.2018 ru 67
The article presents the results of the research of the influence of preliminary treatment of garden beet roots with electromagnetic fields of extremely low frequency on the loss of dry and biologically active substances, such as vitamin C and P-active substances, in the process of long term storage. Garden beet roots of Bordo 237 variety were the objects of research. The objects of research were stored for 7 months at a temperature of 0…+1° С and relative humidity of 90 %. Sampling was carried out every month during the entire storage period. The treatment with electromagnetic fields of extremely low frequency was carried out using an experimental setup of our own assembly. As a result of the conducted research it is established, that the treatment of garden beet roots of Bordo 237 variety with electromagnetic fields of extremely low frequency before dispatching into storage allows to decrease the losses of dry substances by 4,1 % by the end of the 7 months storage period, and also to decrease the losses of vitamin C by 14,8 % and P-active substances by 15,1 %. The data obtained can be used to develop new or improve existing technologies of garden beet roots storing
699 kb

DEVICE FOR PRE-SAMPLE PROCESSING OF SOIL

abstract 1381804004 issue 138 pp. 18 – 36 30.04.2018 ru 72
The considerable share in prime cost of products of agricultural production is made, now, by power expenses. It promotes that the considerable attention is given power - both resource-saving to the equipment and technologies. Thus, the modern science is faced by a global task – creation of cars and tools of new generation, high-economic, highly productive, less power-intensive and metal-consuming. One of the most power-intensive processes of production of agricultural production is processing of the soil. In this article on the basis of numerous researches use of rotary motion of the soil-cultivating working body allowing to improve a design of tillage machines, to reduce metal consumption, power consumption, to increase quality of work is offered. In this article, we offer the device for preseeding processing of the soil on a frame of which the working bodies in the form of flat disks with sharpening working in the horizontal plane, but with the accounting of an angle of deepening of working body are in chessboard order established. Rotary motion which promotes fuller cutting of rhizomes of weed plants and to improvement of quality of preseeding processing of the soil is forcibly transferred to working bodies. Justification of the offered device, constructive and technological schemes of the tool, conclusions and offers are given in the article
1942 kb

MECHANIZATION PRODUCTION PROCESSES STRATEGY OF HIGH QUALITY WHEAT GRAIN

abstract 1371803001 issue 137 pp. 1 – 12 30.03.2018 ru 45
The article presents a production system analysis of high-quality winter wheat grain and the problem solution methods based on mechanization production processes strategy through a new generation of equipment and innovative improvement of machine technologies were outlined. Deterioration of grain quality indicators in the country was marked: the proportion of strong wheat is not more than 0.5% of commodity grain resources, and about 80% of exportable parties is wheat of 4...5 classes. Thus, it is possible due to the process mechanization to raise the grain quality. A well-known method of functional-cost analysis was applied to ground machine technological operations, which are the first to be developed in order to improve the wheat quality in the entire technological system, the demand for which is reduced abroad. The basic technological principles of production of high-quality grain were designed. They have three subsystems: the structure of the wheat varieties for the agricultural producer, the previous crops for wheat, features of cultivation technology of valuable varieties on the basis of intelligent manufacturing systems machines. The mechanization of high quality grain production processes was proposed. It can provide engine technology improvement due to rational composition machine-tractor units of new generation. They allow to abandon the outdated usual items of machinery used in their system and dramatically raise labor productivity due to the combination of operations, quality of work, yield and reduce costs. The features of mechanization on harvesting and post-harvest grain refinement are reflected with the aim of improving its quality. Applied to various forms of management, intellectual grain sorting means of mechanization recommended, which contribute to an increase in wheat quality. The impact of "neveika" technology with the completion of the heap at the stationary place on the grain quality improvement was marked
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