scholarly journals Justification of the geometric dimensions of drum sorting machine

2021 ◽  
Vol 937 (3) ◽  
pp. 032043
Author(s):  
G Bahadirov ◽  
B Umarov ◽  
N Obidov ◽  
S Tashpulatov ◽  
D Tashpulatov
Keyword(s):  
Conveyor Belt ◽  
Kinematic Parameters ◽  
Efficient Operation ◽  
High Productivity ◽  
Work Surface ◽  
Sorting Machine ◽  
Manual Labour ◽  
Mesh Material ◽  
Direction Of Movement

Abstract This article presents the results of research to determine the basic geometric dimensions of a drum sorting machine designed for potato sorting. A critical analysis of the current situation in this area has been carried out. A number of research works have been studied aimed at developing special methods to reduce manual labour and improve the quality of sizing and sorting potatoes. At the same time, it is important to sort by size with a low level of product damage, with high productivity. Known mechanical and robotic machines used for sorting potatoes: roller, drum, conveyor (belt) and combined. And also, with the help of machine and computer vision, laser backscattering of light, ultrasonic, visual and spectral analysis systems, optical, acoustic intelligent sorting systems. Among the mechanical ones, the drum sorting machine is the simplest in design. The disadvantage of this machine is that during operation the product to be sorted is only in the lower part of the drum, i.e. only part of the work surface is used. To eliminate the abovementioned disadvantage, a new design of the machine is recommended. Where the sorting surface is made of elastic mesh, the size of the holes increased in the direction of movement of the ends along the sorting surface. The ends are connected and pulled together on two drums. The holes of the elastic mesh material vary in size, the size of the holes increases from the beginning to the end of the sorting surface. The drum can be in a truncated cone or a cylinder shape. To ensure the efficient operation of the proposed machine, mathematical calculations are derived, including geometric and kinematic parameters.

scholarly journals Process Simulation of Extraction of Grains from Grain Crops Ears by Wiping

2020 ◽  
Author(s):  
В.А. Николаев ◽  
В.В. Гумённый ◽  
В.В. Капралов ◽  
В.А. Генералов
Keyword(s):  
Conveyor Belt ◽  
Angular Speed ◽  
High Energy ◽  
Initial Position ◽  
Kinematic Parameters ◽  
Grain Crops ◽  
Working Volume ◽  
Direction Of Movement ◽  
Combine Harvesters ◽  
The Impact

При работе зерноуборочных комбайнов около половины мощности двигателя расходуют на извлечение зерна из колосьев зерновых культур. Большие затраты энергии на извлечение зерна из колосьев обусловлены необходимостью протаскивания соломы через молотильное устройство, малым рабочим объёмом между барабаном или ротором и декой, а также извлечением зерна из колосьев зерновых культур преимущественно ударом. При ударе происходит также травмирование зерна. Поэтому задача состояла в разработке зерноуборочного комбайна, извлекающего зёрна из колосьев зерновых культур вытиранием. Для создания теории извлечения зёрен вытиранием необходимо смоделировать процесс. В качестве образца для моделирования принята верхняя часть тритикале «Торнадо» с колосом. Для моделирования принято допущение, что колос упал на деку, после чего был зажат между рабочей ветвью транспортёра и декой строго перпендикулярно направлению движения ветви транспортёра. Лента транспортёра движется равномерно, а дека совершает колебания. Рассмотрено перемещение транспортёра и деки от исходного положения встречно. Для эффективного извлечения зерновок колос, при встречном перемещении ленты транспортёра и деки, должен сделать оборот, то есть повернуться как минимум на 360º. В результате моделирования выявлены кинематические параметры процесса при встречном перемещении транспортёра и деки. Определены: скорость ленты верхнего транспортёра, угловая скорость ведущего вала верхнего транспортёра, период колебания деки, перемещение и угол поворота колоса, расположенного между рабочей ветвью транспортёра и декой, при их встречном перемещении. Моделирование позволит затем рассмотреть перемещение колоса при попутном движении транспортёра и деки от исходного положения и на основе расчётов выявить конструктивные и кинематические параметры транспортёра и деки. At operation of combine harvesters about half of engine power is used for extraction of grain from ears of grain crops. High energy consumption for extraction of grain from the ears is due to the need to pull straw through the threshing device, small working volume between the drum or rotor and the deck, as well as extraction of grain from the ears of grain crops mainly by impact. The impact also causes injury to the grain. Therefore, the task was to develop a combine harvester that extracts grain from grain ears by wiping. To create an extraction theory that is erased by wiping it is necessary to simulate the process. The upper part of the "Tornado" triticale with an ear is taken as a model. For modeling it is assumed that the ear fell on the deck after which it was clamped between the working branch of the conveyor and the deck strictly perpendicular to the direction of movement of the conveyor branch. The conveyor belt moves evenly and the deck oscillates. Movement of conveyor and deck from initial position opposite is considered. In order to efficiently extract the grains of the ears when the conveyor belt and deck are opposite it must turn that is turn at least 360 °. As a result of simulation kinematic parameters of process at opposite movement of conveyor and deck are revealed. The speed of the belt of the upper conveyor, angular speed of the driving shaft of the upper conveyor, period of vibration of the deck, movement and angle of rotation of the ear located between the working run of the conveyor and the deck at their opposite movement are determined. The simulation will then allow us to consider the movement of the ear in the associated movement of the conveyor and deck from the initial position and based on calculations to reveal the structural and kinematic parameters of the conveyor and deck.

scholarly journals Determination of Kinematic Parameters of the Ear when extracting grains from it by wiping, when the deck is stationary

2021 ◽  
pp. 87-91
Author(s):  
В.А. Николаев ◽  
В.В. Гумённый ◽  
В.В. Капралов ◽  
В.А. Генералов
Keyword(s):  
Angular Rate ◽  
Conveyor Belt ◽  
Angular Speed ◽  
High Energy ◽  
Kinematic Parameters ◽  
Grain Crops ◽  
Working Volume ◽  
Direction Of Movement ◽  
Combine Harvester ◽  
Combine Harvesters

При работе зерноуборочных комбайнов около половины мощности двигателя расходуют на извлечение зерна из колосьев зерновых культур. Большие затраты энергии на извлечение зерна из колосьев обусловлены необходимостью протаскивания соломы через молотильное устройство, малым рабочим объёмом между барабаном или ротором и декой, а также извлечением зерна из колосьев зерновых культур преимущественно ударом. При ударе происходит также травмирование зерна. Поэтому задача состояла в разработке зерноуборочного комбайна, извлекающего зёрна из колосьев зерновых культур вытиранием. Для создания теории извлечения зёрен вытиранием необходимо смоделировать процесс. В качестве образца для моделирования принята верхняя часть тритикале «Торнадо» с колосом. Для моделирования принято допущение, что колос упал на деку, после чего был зажат между рабочей ветвью транспортёра и декой строго перпендикулярно направлению движения ветви транспортёра. Лента транспортёра движется равномерно, а дека неподвижна. Рассчитано количество оборотов верхней части растения на деке, скорость верхней части растения в момент попадания в промежуток между лентой верхнего транспортёра и декой, угловая скорость верхних частей растений после ускорения и другие кинематические параметры. В результате определена необходимая угловая скорость вала привода верхнего транспортёра. During the operation of combine harvesters, about half of the engine power is spent on extracting grain from ears of grain crops. The high energy consumption for extracting grain from the ears is due to the need to drag straw through the threshing device, the small working volume between the drum or rotor and the deck, as well as the extraction of grain from the ears of grain crops mainly by shock. The grain is also injured upon impact. Therefore, the task was to develop a combine harvester that extracts grains from the ears of grain crops by wiping. To create the theory of extraction of grains by wiping, you need to simulate the process. As a sample for modeling, the upper part of the Tornado triticale with an ear was adopted. For modeling, it is assumed that the ear fell on the deck, after which it was clamped between the working branch of the conveyor and the deck strictly perpendicular to the direction of movement of the conveyor branch. The conveyor belt moves uniformly, and the deck is stationary. The number of revolutions of the upper part of the plant on the deck, the speed of the upper part of the plant at the time of getting into the gap between the belt of the upper conveyor and the deck, the angular speed of the upper parts of the plants after acceleration and other kinematic parameters are calculated. As a result, the required angular rate of the drive of the upper conveyor was determined.

Research of pressure influence in the gas supply system on the energy consuption level of gas devices

2019 ◽  
Vol 6 (2) ◽  
pp. 56-63
Author(s):  
L. D. Pylypiv ◽  
І. І. Maslanych
Keyword(s):  
Natural Gas ◽  
Residential Buildings ◽  
Supply System ◽  
Normal Operation ◽  
Gas Combustion ◽  
Efficient Operation ◽  
Gas Consumption ◽  
Natural Gas Combustion ◽  
Gas Supply

There are investigated the influence of operating pressures in the gas supply system on the level of such energy indicators as efficiency, gas flow and gas overrun by gas equipment in residential buildings. There is established a relationship between the values of operating pressures in the gas supply system and the gas consumption level of household appliances. The causes of insufficient pressure in the gas networks of settlements are analyzed in the article. There is also developed an algorithm for calculating the change in the efficiency of gas appliances depending on the operational parameters of the gas network. It has been found that the most efficient operation of gas appliances is observed at an overpressure at the inlet of gas appliances of about 1200 Pa.To ensure the required quality of natural gas combustion among consumers and minimize gas consumption there are justified the following measures in the article: coordinating a domestic regulatory framework for assessing the quality of natural gas with international norms and standards; improving the preparation of gas coming from local wells before supplying it to gas distribution networks; auditing low pressure gas pipelines and reconstructing areas affected by corrosion; ensuring standard gas pressure in the network for the normal operation of domestic gas appliances; stating quality indicators of natural gas combustion by gas sales organizations.

scholarly journals Yield and Fruit Quality of Strawberry Cultivars under Different Irrigation Regimes

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 261
Author(s):  
María Teresa Ariza ◽  
Luis Miranda ◽  
José Antonio Gómez-Mora ◽  
Juan Jesús Medina ◽  
David Lozano ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Environmental Sustainability ◽  
Water Productivity ◽  
Production Cycle ◽  
High Productivity ◽  
Yield Efficiency ◽  
Significant Yield ◽  
Water Treatments ◽  
Strawberry Cultivars

Strawberry (Fragaria×ananassa Duch.) production requires the input of large amounts of water provided by irrigation during the entire production cycle. However, water availability is shrinking in many important strawberry cropping areas, such as Huelva (in Europe), compromising the environmental sustainability and economic viability of strawberry production. Besides technical approaches, water-saving strategies are necessary for improving strawberry water productivity such as the use of low water-consumptive cultivars with high productivity or cultivars allowing deficit irrigation (DI) strategies. A two-year field experiment was conducted to compare the physiological and agronomical response of six commercial strawberry cultivars (‘Sabrina’, ‘Fortuna’, ‘Splendor’, ‘Primoris’, ‘Rabida’ and ‘Rociera’) to six different water treatments ranging from 65% to 140% of estimated ‘Sabrina’ evapotranspiration (ETcSab; ~224–510 mm year−1). Cultivars differed substantially in yield and water consumption linked to their biomass partitioning into reproductive/ vegetative organs, determining different yield efficiency (YE). Their water needs (IN) conditioned their response to different water supplies, involving significant yield losses in DI treatments (<20% IN) but not decreasing fruit quality. The highly-consumptive and productive ‘Rabida’ and ‘Rociera’, reduced yields by DI (<40%) but were still profitable; the low-water-consumptive but still productive ‘Fortuna’, ‘Splendor’ and ‘Primoris’ represent significant water-savings (<20%) in strawberry cultivation.

Responses and Optimization of a PID-Based Speed Regulating System of the Planetary Mixer

2011 ◽  
Vol 418-420 ◽  
pp. 1865-1868
Author(s):  
Ming Jin Yang ◽  
Xi Wen Li ◽  
Zhi Gang Wang ◽  
Tie Lin Shi
Keyword(s):  
Control System ◽  
Open Loop ◽  
Open Loop Control ◽  
Efficient Operation ◽  
Loop Control ◽  
Loop Control System ◽  
Response Optimization ◽  
Close Loop Control ◽  
Close Loop Control System

The performance of speed regulating is very important to the mixing process with safe, efficient operation and high quality of production. Strategies and practices of responses and optimization of a PID-based speed regulating system of a planetary mixer were presented in this paper. Research results show that: by means of the signal constraint function presented by Simulink Response Optimization, optimization PID parameters of the 2-DOF-PID controller can be obtained, and the response of close-loop control system has quite good performance of overshoot, response time, and stability compared with an open-loop control system.

scholarly journals Model Disiplin Kerja, Iklim Organisasi dan Produktivitas Kerja Pegawai

2018 ◽  
Vol 9 (2) ◽  
pp. 85-92
Author(s):  
Zulfikar Ikhsan ◽  
Suwatno Suwatno ◽  
Budi Santoso
Keyword(s):  
Organizational Climate ◽  
Linear Regression Analysis ◽  
Work Productivity ◽  
Multiple Linear Regression Analysis ◽  
Regional Office ◽  
Managerial Implication ◽  
High Productivity ◽  
Productivity Increase ◽  
Increase Productivity

AbstractDemands for productivity are getting higher. The tight competition among retailers causes companies that do not have high productivity to compete. Quality of HR is the key to success. The purpose of the study was to obtain an explanation of the influence of work discipline and organizational climate on the work productivity of employees at PT. Surya Donasin Regional Office Cianjur, which numbered 59 employees randomly selected. The research method uses explanatory survey with multiple linear regression analysis. Based on the results of the research that productivity as one of the keys to compete in the retail industry is determined by work discipline and organizational climate that supports work productivity. Labor productivity is determined by internal and external dynamics in the form of organizational climate. The managerial implication is that the lack of productivity over employees causes low company productivity. Increase productivity as an option to support work productivity.Keywords : Work discipline; organizational climate; productivity; retailer industry AbstrakTuntutan terhadap produktivitas semakin tinggi. Persaingan yang cukup ketat diantara perusahaan retailer menyebabkan perusahaan yang tidak memiliki produktivitas tinggi kalah bersaing. Kualitas SDM menjadi kunci keberhasilan. Tujuan penelitian untuk memperoleh penjelasan tentang pengaruh disiplin kerja dan iklim organisasi terhadap produktivitas kerja para pegawai di PT. Surya Donasin Regional Office Cianjur yang berjumlah 59 pegawai yang dipilih secara acak. Metode penelitian menggunakan survey explanatory dengan analisis regresi linear berganda. Berdasarkan hasil penelitian bahwa produktivitas sebagai salah satu kunci untuk bersaing dalam industri retail ditentukan oleh disiplin kerja dan iklim organisasi yang mendukung produktivitas kerja. Produktivitas tenaga kerja ditentukan oleh dinamika internal dan eksternal berupa iklim organisasi. Implikasi manajerial adalah lemahnya produktivitas pegawai menyebabkan produktivitas perusahaan rendah. Meningkatkan produktivitas sebagai pilihan untuk mendukung produktivitas kerja.Kata Kunci: Disiplin kerja; iklim organisasi; produktivitas; industri retailer

scholarly journals Increase of nutrients export and production of pitaya whit potassium fertilization

2020 ◽  
Vol 11 ◽  
pp. e3276
Author(s):  
Josimara Mendes Rabelo ◽  
Maria do Céu Monteiro Cruz ◽  
Nubia Cassiana Santos ◽  
Deilson de Almeida Alves ◽  
João Esdras Lima ◽  
...  
Keyword(s):  
Dry Matter ◽  
Nutritional Requirements ◽  
Nutrient Export ◽  
Plant Nutrient ◽  
High Productivity ◽  
Potassium Fertilization ◽  
Hylocereus Undatus ◽  
Hylocereus Polyrhizus

Characterization works of pitayas show that the potassium (K) is the nutrient most exported, thus, influences in the productivity and quality of this fruit. However, these researches do not report the nutrients export by pitaya's associating the fertilization carried out in the orchard, information that is relevant to make the nutrients reposition adequate at the time of fertilization. The research was carried out to evaluate the supply of K2O in the export of nutrients and productivity of the Hylocereus undatus and Hylocereus polyrhizus pitaya species. The analysis was carried out in the mature fruits harvested in two harvests. Potassium fertilization was performed at doses of 0; 50; 100 and 200 g of K2O per plant. Nutrient export per ton of fruit was calculated from the determination of the nutrient levels and the dry matter of the pitaya pulp. The export of nutrients by the pitaya of the species H. undatus and H. polyrhizus occurs in the following order: K>N>P>Ca>Mg> and Mn>Fe>Cu>Zn>B. These species of pitaya have similar nutritional requirements, enabling them to be receive same fertilization management. The amount of nutrients exported was higher in plants fertilized with potassium due to the higher productivity achieved. Orchards of pitaya that reach high productivity require a greater quantity of nutrients, due to the increase export by the fruits.

Productivity Considerations in Face Milling

2019 ◽  
Vol 952 ◽  
pp. 66-73
Author(s):  
János Kundrák ◽  
Viktor Molnár ◽  
István Deszpoth ◽  
Tamás Makkai
Keyword(s):  
Material Removal ◽  
Removal Rate ◽  
Cutting Speed ◽  
Face Milling ◽  
Manufacturing Companies ◽  
Performance Limits ◽  
Machining Time ◽  
High Productivity ◽  
Manufacturing Time

The kinematic versions and applied tools of milling allow for the machining of several surfaces and surface combinations, making it a versatile and widely applied procedure. Face milling for cutting is used for the high productivity manufacturing of prismatic components. Naturally, the enhancement of productivity is a primary goal for manufacturing companies; this study analyzes the efficiency of material removal, which directly influences the time parameters characterizing production performed by face milling. The focus of the paper is to identify the selection of technological data (feed, feed rate, cutting speed, diameter of milling head) that can reduce the machining time or increase the values of material removal rate. Cutting experiments were carried out for machining prismatic components from AlSi9Cu3(Fe) aluminum alloy by diamond tools. It was found that within the performance limits of the manufacturing system it is possible to save a significant amount of manufacturing time while retaining the specified geometric accuracy and surface quality of the component.

scholarly journals Traction control and diagnostics of electric and unmanned vehicles on roller stands

2020 ◽  
Vol 157 ◽  
pp. 01021
Author(s):  
Alexander Fedotov ◽  
Oleg Yankov ◽  
Anton Chernyshkov
Keyword(s):  
Electric Vehicles ◽  
Technical Condition ◽  
Test Methods ◽  
Unmanned Vehicles ◽  
Kinematic Parameters ◽  
Modes Of Operation ◽  
Traction Control ◽  
Wheeled Vehicles

The authors of the article analyze the possibilities of correct diagnostics of unmanned and electric vehicles on modern power and inertia roller stands. The purpose of this work is to improve the quality of monitoring the technical condition of wheeled vehicles by providing highly informative and stable test modes of operation in the process of their diagnostics. To achieve this target, we have developed test methods for wheeled vehicles, the implementation of which it is proposed to use a hybrid designed stand allows to measure force and power to the drive wheels of the vehicle, and temporal and kinematic parameters of the process of its functioning. The study proved that, to ensure a highly stable and test modes of operation of wheeled vehicles in the process of control of technical condition and diagnosis, you should use hybrid stands.

Improving Efficiency and Enhancing Productivity in Transporting Fertilizers by Using Conveyor Belt Cleaners

2014 ◽  
Vol 1082 ◽  
pp. 505-510 ◽  
Author(s):  
Tasnim F. Ariff ◽  
Muhd. Fahmi B. Jusoh ◽  
Malek Parnin ◽  
Mohd. Hanif Azenan
Keyword(s):  
Material Handling ◽  
Drainage System ◽  
Cost Effective ◽  
Conveyor Belt ◽  
Material Handling System ◽  
Handling System ◽  
Food Items ◽  
Manual Labour ◽  
The Future ◽  
Conveyor Belts

Conveyor belts are used widely to carry and transport various materials ranging from fertilizers to foods items from the cargo ship to the packaging site. Spillage and carryback problems are common issues relating to transportaion of these types of materials at Malaysian ports. This leads to lots of wastage in fertilizers and food. In addition, extra manual labour work is required to shovel the spillage into the container. This raises the concern of hygiene especially when relating to food items. Furthermore, improper washing and drainage system has also lead to corrosion on the floor. This has resulted in a lot of inefficient work and lack in productivity in the material handling system. Therefore, in order to solve this problem, primary and secondary belt cleaners were designed using CATIA software. These newly improved simple and cost effective designs of the primary and secondary belt cleaners together with a spray shaft and efficient washing box were fabricated, tested and implemented successfully. The spillage was eliminated and with the new washing system, corrosion on the floor can be prevented from occuring in the future.

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