Justification of design parameters of the fractional reaping conveyor and its devices for removal of beveled stems from under the wheels of the vehicle

2019 ◽  
Vol 1 (3) ◽  
pp. 1-10
Author(s):  
Mikhail M. Konstantinov ◽  
Ivan N. Glushkov ◽  
Sergey S. Pashinin ◽  
Igor I. Ognev ◽  
Tatyana V. Bedych
Keyword(s):  
Optimal Design ◽  
Technological Process ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Optimal Parameters ◽  
Belt Conveyor ◽  
Grain Crops ◽  
Mode Of Operation ◽  
Optimal Values ◽  
Main Component

In this paper we consider the structural and technological process of the combine used in the process of separate harvesting of grain crops, as well as a number of its parameters. Among the main units of the combine, we allocate a conveyor and devices for removing beveled stems from under the wheels of the vehicle. The principle of operation of the conveyor at different phases of the Reaper and especially the removal of cut stems from under the wheels of the vehicle during operation of the Reaper. The results of theoretical studies on the establishment of the optimal design of the parameters of the belt conveyor are presented, the ranges of their optimal values are considered and determined. Studies on the establishment of optimal parameters of the screw divider in the Reaper, which is the main component of the device for removal of beveled stems, are presented. Taking into account the optimal design and mode of operation of the screw divider, the correct work is provided to remove the cut stems from under the wheels of the harvester.

scholarly journals THEORETICAL STUDIES OF THE TECHNOLOGICAL PROCESS OF OPERATION OF A COULTER WITH A SEED VELOCITY SUPPRESSOR FOR PLANTING GRAIN CROPS

2021 ◽  
pp. 132-139
Author(s):  
Д.В. Ванин ◽  
Н.П. Ларюшин ◽  
В.В. Шумаев ◽  
А.В. Шуков ◽  
Т.А. Кирюхина
Keyword(s):  
Uniform Distribution ◽  
Technological Process ◽  
Movement Time ◽  
Theoretical Studies ◽  
Fall Time ◽  
Grain Yields ◽  
Grain Crops ◽  
Seed Distribution

Рассматривается решение одной из важнейших проблем при посеве зерновых культур – равномерность распределения семян по длине и глубине борозды, при исключении забивания выходного отверстия семяпровода. Приведены теоретические исследования сошника с гасителем скорости семян для посева зерновых культур, а также описана конструкция разработанного сошника. Отмечен ряд существенных недостатков современных сошников зерновых сеялок. В результате теоретических исследований составлены уравнения для определения времени движения семени, расстояние между центрами масс от первого удара до второго, скорость семени при падении, время падения семени при выходе из семяпровода, уравнение движения семени при выходе его из семяпровода, а также получены значения выше указанных значений, которые обеспечат повышение качества работы сошника, что скажется на повышении равномерности распределения семян по длине рядка и урожайности зерновых культур. In the article, one of the major issues of planting crops is considered. It is the problem of the uniform distribution of the seeds along the length and depth of the furrow, when excluding the clogging of the outlet of the grain tube. Theoretical studies of a coulter with a seed velocity suppressor for planting grain crops are presented, and the design of the developed coulter is described. Several significant disadvantages of modern coulters of grain seeders are noted. As a result of theoretical studies, the equations to determine the movement time of a seed, the distance between the centres of mass from the first strike to the second one, the seed velocity in the fall, the fall time of a seed when leaving the grain tube, the equation of the seed motion at its leaving from the grain tube are composed. Moreover, the values of these equations are obtained, which ensure improved coulter quality. It can have an impact on increasing the uniformity of seed distribution over the length of the row and grain yields.

scholarly journals The equation of the oscillatory motion of the blade of the earth-moving machine depending on the properties of the ground and the parameters of the blade

2021 ◽  
Vol 274 ◽  
pp. 11008
Author(s):  
Minsur Zemdikhanov ◽  
Rustem Sakhapov ◽  
Ramil Gainutdinov
Keyword(s):  
Optimal Design ◽  
Oscillatory Motion ◽  
Design Parameters ◽  
Technological Properties ◽  
Optimal Parameters ◽  
The Earth ◽  
Oscillatory Movement ◽  
Working Bodies

The influence of the design parameters and technological properties of the ground on the nature of the oscillatory movement of the blade of the working body of the earth-moving machine is investigated. The purpose of the study is to identify the force factors of the interaction of the oscillatory working body of the earth-moving machine with the ground and determine its optimal parameters. The equation of the oscillatory motion of the blade of the working body of the earthmoving machine depending on its design parameters and technological properties of the ground is obtained. The results can be used in the development and determination of the optimal design parameters of the working bodies of earth-moving machines.

scholarly journals THEORETICAL JUSTIFICATION OF SOME STRUCTURAL-TECHNOLOGICAL PARAMETERS OF MILKING MACHINEWITH DRIVING DRIVING MODE

2020 ◽  
pp. 16-26
Author(s):  
Ihor Babyn ◽  
Anatoliy Hrytsun
Keyword(s):  
Milk Production ◽  
High Vacuum ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Technological Parameters ◽  
Machine Milking ◽  
Mode Of Operation ◽  
Milking Machine ◽  
Technical Solutions ◽  
The Impact

An analysis of the technical solutions of milking machines with controlled vacuum mode and theoretical studies of the operation of the milking machine actuator, which allows to reduce the vacuum load on the udder and the impact on the sphincter of the cervix and prevent "idle" milking in high vacuum in the machine process. The completeness of milking cows and reducing the incidence of their mastitis depends to some extent on the operation of milking equipment. Performance indicators of the technological process of serial milking equipment do not always fully comply with the current zootechnical requirements. During their work at the beginning and at the end of the milking of the animal there may be a process of "idle" milking at high vacuum, which often leads to the disease of animals with mastitis and subsequent culling. Along with the increase in milk production, quality is becoming extremely important. The analysis of the known technical solutions of milking machines with a controlled mode of milking shows that the domestic and foreign industry do not produce milking machines with a controlled mode of milking, which fully correspond to the physiology of animals. In our opinion, the most effective one is to consider a milking machine with a low-inertial milk flow sensor, which controls the vacuum mode, both in poddyah and interstitial chambers of milking glasses. Conducted theoretical studies of the working process of machine milking allowed to systematize the engineering calculation method of milking machine with a controlled mode of operation and to determine the optimal design parameters of the actuators. The analytical expressions obtained characterize the influence of their parameters and mode of operation on the dynamics of milk production during machine milking of cows.

scholarly journals Investigation of the kinematics of seed movement in the centrifugal distributor of a pneumatic seeder

2020 ◽  
Vol 193 ◽  
pp. 01017
Author(s):  
Azamat E. Bogus
Keyword(s):  
Pneumatic System ◽  
Design Parameters ◽  
Theoretical Studies ◽  
Optimal Parameters ◽  
The Relationship

Theoretical studies of the seed movement in the centrifugal seed distributor of a pneumgivenatic grain seeder have been performed. There were obtained the equations describing the process of seed movement in a centrifugal seed distributor which allow determining the optimal parameters of the pneumatic system of the seeder. The relationship between the operating and design parameters of the centrifugal distributor is given.

scholarly journals Laboratory studies of the sowing unit with the grooves of the coil made in the shape of a torus

2019 ◽  
pp. 82-84
Author(s):  
Nikolay Petrovich Laryushin ◽  
Alexander Vasilyevich Shukov ◽  
Artem Vladimirovich Abakumov
Keyword(s):  
Optimal Design ◽  
Uneven Distribution ◽  
Operating Parameters ◽  
Laboratory Studies ◽  
Grain Crops ◽  
Optimal Values ◽  
Sowing Machine ◽  
Multifactorial Experiment ◽  
Made In

The article is devoted to improving the quality of sowing seeds of grain crops and contains the results of laboratory studies of the coil sowing apparatus with the grooves of the sectional coil made in the form of a torus. The paper presents the optimal design and operating parameters of the coil sowing machine with the grooves of the sectional coil made in the form of a torus to ensure the best uniformity of the distribution of seeds along the length of the row. A multifactorial experiment was carried out to substantiate the optimal values of the design and operating parameters of the coil sowing apparatus. The dependences of the uneven distribution of seeds along the length of the row on the speed of the coil, the radius of the forming circle of the torus and the thickness of the separation disk of the spool-sowing apparatus are established.

scholarly journals Parametric Optimization of Belt Conveyors by Energy Efficiency Criterion

2021 ◽  
pp. 50-58
Author(s):  
O. S Kuropiatnyk
Keyword(s):  
Energy Consumption ◽  
Specific Energy ◽  
Specific Energy Consumption ◽  
Design Parameters ◽  
Belt Conveyor ◽  
Belt Speed ◽  
Optimal Value ◽  
Optimal Values ◽  
Belt Conveyors ◽  
Belt Width

Purpose. The purpose of this work is to substantiate the optimal values of the belt conveyor parameters, at which the specific energy consumption for the cargo transportation takes on the lowest value. Methodology. The substantiation of the optimal values of the belt conveyor parameters was carried out by minimizing the function of specific energy consumption, which represents the energy consumption for the transportation of a cargo weighing 1 kg at a distance of 1 m. In the course of research, the drive force was determined using the contour bypass meth-od. In this case, the specific loads from the transported cargo, belt and roller supports were presented as functions of the belt width. To establish the optimal values of the conveyor productivity and belt speed, the belt width was presented as a function of these values, taking into account the physical and mechanical properties of the transported cargo, the design features of the roller supports and the belt angle. Findings. I obtained the dependences of specific energy consumption on the design parameters of the conveyor. Their analysis made it possible to identify the opti-mal values of the belt width, conveyor productivity, belt speed, and the optimal ratio of the last two values for dif-ferent types of transported cargo. It is noted that the results obtained can be supplemented by carrying out calcula-tions according to the formula given in this work. It has been established that the optimal value of the belt width depends only on the belt angle and on the coefficients that determine the energy losses, in particular the movement resistance coefficient of the belt; the influence of the specified coefficient increases with an increase in the belt angle. In addition, the optimal value of the belt width does not depend on the conveyor length, its productivity and belt speed. Originality. The dependences of the specific energy consumption on the design parameters of the belt conveyor were obtained, which made it possible to establish the optimal values of the belt width and the ratio of the conveyor productivity to the belt speed. Practical value. The results of this work can be used in the design of energy-efficient belt conveyors, which are characterized by the lowest specific energy consumption for cargo transportation.

scholarly journals Optimization of the kinematic mode of operation of the tractor-driven tillage tool

2021 ◽  
Vol 37 ◽  
pp. 00066
Author(s):  
Yuri Saveliev ◽  
Yuri Kirov ◽  
Pavel Ishkin ◽  
Mikhail Petrov
Keyword(s):  
Technological Process ◽  
Operating Speed ◽  
Kinematic Parameters ◽  
Soil Cultivation ◽  
Mode Of Operation ◽  
Optimal Values ◽  
Working Bodies ◽  
Multifactorial Experiment

A traction-driven tillage tool with low traction resistance has been developed. A decrease in the tractive resistance of the implement is achieved by transferring the main share of the power consumed by the implement to the process of loosening the soil through the tractor power take-off shaft (PTO) to the drive needle discs, which in turn create a pushing force. The efficiency of the technological process of soil cultivation depends on the kinematic mode of operation of each row of disk working bodies of the tractiondrive tillage implements. To optimize their kinematic mode of operation, a multifactorial experiment was carried out, which made it possible to establish the optimal values of such factors as the kinematic parameters of the 1st and 2nd rows of needle disks at the set operating speed of the unit.

scholarly journals Optimal Design Parameters for a Phased Array Based Ultrasonic Polar Scan

2021 ◽  
pp. 1-1
Author(s):  
Jannes Daemen ◽  
Arvid Martens ◽  
Mathias Kersemans ◽  
Erik Verboven ◽  
Steven Delrue ◽  
...  
Keyword(s):  
Optimal Design ◽  
Phased Array ◽  
Design Parameters ◽  
Ultrasonic Polar Scan

scholarly journals A Two-Round Optimization Design Method for Aerostatic Spindles Considering the Fluid–Structure Interaction Effect

2021 ◽  
Vol 11 (7) ◽  
pp. 3017
Author(s):  
Qiang Gao ◽  
Siyu Gao ◽  
Lihua Lu ◽  
Min Zhu ◽  
Feihu Zhang
Keyword(s):  
Optimal Design ◽  
Optimization Design ◽  
Design Method ◽  
Fluid Structure Interaction ◽  
Design Procedure ◽  
Design Parameters ◽  
Geometrical Parameters ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Aerostatic Spindle

The fluid–structure interaction (FSI) effect has a significant impact on the static and dynamic performance of aerostatic spindles, which should be fully considered when developing a new product. To enhance the overall performance of aerostatic spindles, a two-round optimization design method for aerostatic spindles considering the FSI effect is proposed in this article. An aerostatic spindle is optimized to elaborate the design procedure of the proposed method. In the first-round design, the geometrical parameters of the aerostatic bearing were optimized to improve its stiffness. Then, the key structural dimension of the aerostatic spindle is optimized in the second-round design to improve the natural frequency of the spindle. Finally, optimal design parameters are acquired and experimentally verified. This research guides the optimal design of aerostatic spindles considering the FSI effect.

Momentum exchange impact damper design methodology for object-wall-collision problems

2017 ◽  
Vol 24 (14) ◽  
pp. 3206-3218
Author(s):  
Yohei Kushida ◽  
Hiroaki Umehara ◽  
Susumu Hara ◽  
Keisuke Yamada
Keyword(s):  
Optimal Design ◽  
Design Methodology ◽  
Design Parameters ◽  
Momentum Exchange ◽  
Impact Damper ◽  
One Dimensional ◽  
Practical Design ◽  
Wall Collision ◽  
Damper Design ◽  
And Control

Momentum exchange impact dampers (MEIDs) were proposed to control the shock responses of mechanical structures. They were applied to reduce floor shock vibrations and control lunar/planetary exploration spacecraft landings. MEIDs are required to control an object’s velocity and displacement, especially for applications involving spacecraft landing. Previous studies verified numerous MEID performances through various types of simulations and experiments. However, previous studies discussing the optimal design methodology for MEIDs are limited. This study explicitly derived the optimal design parameters of MEIDs, which control the controlled object’s displacement and velocity to zero in one-dimensional motion. In addition, the study derived sub-optimal design parameters to control the controlled object’s velocity within a reasonable approximation to derive a practical design methodology for MEIDs. The derived sub-optimal design methodology could also be applied to MEIDs in two-dimensional motion. Furthermore, simulations conducted in the study verified the performances of MEIDs with optimal/sub-optimal design parameters.

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