scholarly journals Justification of the minimum required length of the trajectory of the grain on the surface of the working body for layer-by-layer seed treatment

Author(s):  
V. V. Ratushnyy ◽  
Yu. V. Kosovets

Annotation Purpose. Improving the efficiency of pesticide use by substantiating the rational modes of operation of the working bodies of the disinfectant for layer-by-layer treatment of seeds with protective and stimulating preparations. Methods. The research used an analytical-calculation method with experimental verification. Results. Conducting laboratory and field studies of a prototype developed experimental sample for layer-by-layer treatment of crop seeds with protective and stimulating preparations, and indicators of the quality of seed treatment are determined depending on the operating modes of the working body. Conclusions. The minimum required length of the trajectory of the grain on the surface of the working body decreases with increasing film thickness of the working fluid from 0.005 mm to 0.025 mm and increases with increasing grain diameter from 1 mm to 13 mm and is in the range of 10–1035 mm. It is experimentally established that the actual length of the trajectory of the grain on the surface of the working body at an angular velocity from 40 rad/s to 100 rad/s is in the range from 1290 mm to 1450 mm, which exceeds the minimum required length and provides the necessary conditions for quality processing seed. Keywords: seeds, layer-by-layer processing, protective-stimulating preparations, working body, operating modes.

Author(s):  
Ratushnyy, V. ◽  
Kosovets, Yu.

Purpose. Improving the efficiency of pesticide use by justifying rational modes operation of the working bodies treater for layer-by-layer treatment of seeds with protective and stimulating preparations. Methods. The researchers used the method of planning experiments and the experimental-calculation method. Results. Conducting laboratory and field researches of a prototype developed experimental sample for layer-by-layer treatment by crop seeds with protective and stimulating preparations, and indicators of the quality by seed treatment are determined depending on the operating modes at the working body. Conclusions. Regression equations are obtained to determine the quality layer-by-layer processing of seeds depending on the seed supply, the working fluid supply and the angular velocity by working body, on the basis of which the range of changes in the rational operating parameters by working bodies is established, which ensures the best quality of seed processing: the angular velocity of the working body is 80–120 rad/s, seed supply – 0.8–1.2 kg/s, supply of working fluid – 6–10 ml/s. Keywords: seeds, layer-by-layer processing, protective-stimulating preparations, working body, modes of operation.


Author(s):  
Є. Я. Прасолов ◽  
С. А. Бєловол ◽  
Б. С. Черненко ◽  
А. В. Ужищенко ◽  
А. В. Шеметюк

Представлено результати розробки безприводного ротаційного органу адаптера до сівалки просапних культур. Проведено аналіз робочих органів ґрунтообробних машин; обґрунтовано ґрунтообробний адаптер; визначено кути афронтальності й нахилу дискового  органу; проведено порівняльну оцінку показників твердості ґрунту; визначено раціональні параметри і режими роботи робочого органу; визначено фракційний склад ґрунту та розпушення робочим органом; проведено  дослідження з визначення раціонального кута φ робочого органу; встановлено поздовжній профіль насіннєвого ложа; виконано співвідношення ширини і глибини обробленої смуги; визначено коефіцієнти к1 і к2  у формулі тягового опору безприводного ротаційного органу. Для  підвищення якості передпосівного обробітку ґрунту запропоновано адаптер із безприводним ротаційним органом до сівалок, який складається з поперечної балки рами, на якій розташовані секції безприводного ротаційного органу. Для копіювання профілю поля кожна секція забезпечена паралелограмною підвіскою і підпружиненою штангою. Крім поперечної балки  рама адаптера складається з двох автозчіпок, які слугують для агрегатування з трактором, а автозчеплення з сівалкою, пов'язаних між собою поздовжніми балками.  Проведено випробування результатів науково-дослідної роботи, яким підтверджено ефективність та доцільність для використання у господарстві ПП Агрофірма «Анастасія» Глобинського району Полтавської області. The article presents the results of the development of a non-rotating rotational organ of the soil-working adapter to a seed drill of cultivating crops. The analysis of working bodies of soil-working machines was carried out; the constructive-technological scheme of the soil-working adapter is substantiated; defined angles of inclination and inclination of the disc body; comparative estimation of soil hardness indexes; defined rational parameters and operating modes of the working body; determined fractional composition of soil and loosening by the working body;  researches have been conducted to determine the rational angle φ of the working organ; the longitudinal profile of the seed bed is established; the ratio of the width and depth of the treated strip is executed; the coefficients k1 and k2 in the formula of the traction resistance of the non-driven rotational body are determined. To improve the quality of pre-sowing soil cultivation, an adapter with a rotary rotary device to the seeders is proposed. It consists of a transverse beam of a frame, on which, with the help of brackets, there are sections of a non-rotating rotary body. To improve the quality of pre-sowing soil cultivation, an adapter with a rotary device to the seeders is offered. It consists of a transverse beam of a frame, on which, with the help of brackets, there are sections of a non-rotating rotary body. To copy the field profile, each section is provided with a parallelogram suspension and a spring-loaded rod. In addition to the transverse beam of the adapter frame consists of two auto-scraps, which serve for aggregating with the tractor, and auto-coupling with a drill, connected by a longitudinal beam. The testing of research results has been carried out, which confirms the efficiency and expediency for use in the farm of the PP agricultural firm «Anastasia» in Globyno district, Poltava region.


2019 ◽  
Vol 65 (No. 3) ◽  
pp. 85-90
Author(s):  
Alexei Sibirev ◽  
Alexandr Aksenov ◽  
Alexei Dorokhov ◽  
Andrei Ponomarev

The quality of the separation of root crops, onions and potatoes is known to primarily depend on the cultivation conditions. As a rule, these cultures are cultivated in mechanically light soils in order to improve the quality of separation, as well as to reduce the traction resistance of the harvester when extracting the root crops from the soil. When harvesting the root crops, it is very important to maintain the soil in a loose (light) state to improve the quality of the separation. Due to the fact that in digging up the root crops, there is a joint flow of strong soil lumps to the separating working bodies, which are difficult to separate on the slit working bodies of the harvester, which increases damage to the root crops when interacting with the soil lumps, the commercial quality of the products is subsequently deteriorated. The existing potato harvesters damage the commercial products as a result of the interaction of the potato tubers with each other, with the working bodies and with the soil lumps. However, the greatest percentage of damage to potato tubers occurs as a result of their interaction with the working bodies of the harvester. Field studies were conducted to determine the places of the greatest impact of the individual working bodies of the potato harvesters and to carry out subsequent actions for the elimination of these negative impacts in the design of the harvesters. This article presents a methodology for conducting field studies on the assessment of the impact of the working bodies on the scale of damage to potato tubers when harvesting. The results of the comparative studies of the impact of the working bodies of modern potato harvesters, which damage the potato tubers as a result of the interaction with them are presented. We have determined that the greatest scale of impact on the potato tubers during the mechanised harvesting is observed as the transition from the main elevator to the secondary separation devices takes place, irrespective of the design and technological scheme of the harvester, and reaches its minimum value from 6.5 N for the Bolko harvester to 21 N for the AVR-Spirit-6200 harvester.


Author(s):  
Volodymyr Rutkevych

The article discusses and analyzes the operating conditions of a modern hydraulic drive. Despite the difficult operating conditions of modern agricultural machinery (difficult working conditions, frequent changes in the technological load on the working bodies, low quality of the working fluid, increased dust content and temperature fluctuations), the hydraulic drive is its main reliable element. The basis of hydraulic drives is hydraulic spool type devices, they remain the main components of a modern hydraulic drive, are able to increase energy, dynamic, cost characteristics and increase the reliability and durability of this drive. The advantages, disadvantages and directions of improvement of this drive are noted. The modern directions of development of the hydraulic drive aimed at increasing the reliability, durability and adaptability to changing the technological load on the working bodies are considered. A booth design is proposed that allows to investigate a resource study of the developed spool splitter of a forage stem feeder. As a result of the research at the initial stage, some shortcomings in the structural implementation of the developed spool of the flow divider at the time up to 2·104 cycles were revealed. After analyzing the operating conditions and making changes to the design of the stem feeder spacer spacer and retesting, the spacer spacer showed stable operation, with more than 6.6·105 load cycles.


2020 ◽  
Vol 203 ◽  
pp. 02011
Author(s):  
Vladimir Teterin ◽  
Vyacheslav Terentyev ◽  
Konstantin Andreev ◽  
Alexander Shemyakin ◽  
Olga Teterina

One of the modern elements of agrotechnologies is the presowing treatment of seeds with bio-stimulating preparations, providing a complex effect on seeds, which, along with improving the sowing and productive qualities of seeds, can increase the resistance of plants to adverse environmental factors, diseases and pests. Recently, world agricultural production is increasingly focused on environmentally friendly technologies, where preparations based on components of natural origin become important. Preparations based on humic acids are among them. The effectiveness of their use in the process of presowing treatment of seeds to a certain extent depends on the technology and technical means used. This article discusses the design of the developed seed dresser and explores the basic physical processes that affect the quality of seed treatment. The effectiveness of seed treatment with growth stimulants has been studied depending on the intensity of heat exchange processes taking place in the processing chamber of the developed device, where heat transfer from the vapor of humates to the downward flow of grain occurs. Herewith, the dependence of heat transfer on the residence time of the grain in the treatment chamber, heat carrier temperature (aerosol of humates) and uniform distribution of coolant flow in the treatment chamber was determined.


2020 ◽  
Vol 14 (4) ◽  
pp. 109-111
Author(s):  
Igor Serzhanov ◽  
Farit Shaykhutdinov ◽  
Al'bina Serzhanova ◽  
Razil Garaev

The article discusses the investigation’s results to study the effect of pre-sowing seed treatment with various reagents in their pure form, as well as in a mixture on the quality of spring wheat seeds of Yoldiz variety, included in the state registry for the 7th region in 2015. Before processing the seeds with various reagents, the species composition was studied, and features of the development of mycosis of spring wheat seeds were proposed ways to protect wheat from the most common diseases. Based on three-year experimental data, the high efficiency of tank mixtures, studied preparations for presowing seed treatment, was established. Field experiments to evaluate the effects of various chemicals were carried out in 2016-2018 on the experimental field of Plant Production Department of Kazan State Agrarian University. The following options were studied: 1) control - without seed treatment; 2) Kinto-Duo disinfectant - 2 liters per 1 ton of seeds; 3) albite - a natural growth stimulator based on polybeta-hydroxyl butyric acid, obtained from microorganisms; 4) ZhUSS-2 - copper-molybdenum containing chelate complex; 5) Tank mixture of the treating agent Kinto Duo + Albit, 30 g/t of seeds; 6) Tank mixture of the protectant Kinto Duo + ZhUSS-2 2 l/t. The flow rate of the working fluid is 10 t/t of seeds. Processing was carried out on a Mobitox super machine.


2020 ◽  
Vol 10 (1) ◽  
pp. 203-208
Author(s):  
Igor' Kazakov

One of the important indicators of the quality of planting material grown in forest nurseries is preservation of roots and the amount of soil remaining on the root system of plants when they are excavated. Machines used in forest nurseries for digging planting material do not fully meet these requirements, since soil layer is not sufficiently loosened and soil is not separated from the root systems of plants. In addition, considerable effort is required to extract plants from the soil, and part of the roots is cut off. Modern plant lifters with active working bodies enable to separate the soil from the root systems of plants and ensure safety of the required amount on them, reducing the effort to extract plants from the soil. The article presents the results of studies of the influence of plant lifter operating modes on the quality of planting material harvesting, on the basis of which the rational oscillation frequency of the levers and beats within 675 counts/min is substantiated when applying one oscillation of 5.4 cm/count and operating speed 2.2 km/h. These operation modes of plant lifter ensure the preservation of soil on the root system of enlarged spruce seedlings in the amount of 136.2 g and allowable effort to remove them from the soil within 36.4 N.


Author(s):  
A.V. Konstantinovich ◽  
◽  
A.S. Kuracheva ◽  
E.D. Binkevich

In conditions of climate change, when temperature and precipitation fluctuations occur more and more frequently during the growing season, it is necessary to obtain high quality seedlings with "immunity" to various stress factors, including high weediness, the damage from which is associated with a decrease in yield (by 25 -35%) and with a deterioration in the quality of agricultural products. Due to the imbalance in production technology, seedlings are often weakened, overgrown, with a low yield per unit area and survival rate in the field. One of the solutions to this problem is the use of PP for pre-sowing seed treatment to increase the competitiveness of seedlings in the field.


At production of fabrics, including fabrics for agricultural purpose, an important role is played by the cor-rect adjustment of operation of machine main regulator. The quality of setup of machine main controller is determined by the proper selection of rotation angle of warp beam weaving per one filling thread. In the pro-cess of using the regulator as a result of mistakes in adjustment, wear of transmission gear and backlashes in connections of details there are random changes in threads length. The purpose of the article is the research of property of random errors of basis giving by STB machine regulator. Mistakes can be both negative, and positive. In case of emergence only negative or only positive mistakes operation of the machine becomes im-possible as there will be a consecutive accumulation of mistakes. As a result of experimental data processing for stable process of weaving and the invariable diameter of basis threads winding of threads it is revealed that the random error of giving is set up as linear function of the accidental length having normal distribution. Measurements of accidental deviations in giving of a basis by the main regulator allowed to construct a curve of normal distribution of its actual length for one pass of weft thread. The presented curve of distribution of random errors in giving of a basis is the displaced curve of normal distribution of the accidental sizes. Also we define the density of probability of normal distribution of basis giving errors connected with a margin er-ror operation of the main regulator knowing of which allows to plan ways of their decrease that is important for improvement of quality of the produced fabrics.


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