Substantiation of the Parameters of a Horizontal Conveyer-Cleaner of Root Crops

Tkachenko, I.G.; Hevko, Roman Bohdanovych; Gandziuk, Мykola; Synii, Sergii; Trokhaniak, Oleksandra

doi:10.31926/but.fwiafe.2021.14.63.1.19

Cited by 4 publications

(1 citation statement)

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“…On the basis of the studies, design, kinematic and technological parameters of working bodies have been justified in terms of their functional purpose [8,9]. The conducted theoretical and experimental investigations in the area of loose material transfer for two-line screw conveyers [10], as well as material intake by active loading spouts [11], made it possible to choose rational design and kinematic parameters of tools as well as their operation modes. At the same time, there are a number of unresolved issues related to the operational and resource performance of such work tools.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on performance of flexible screw conveyor when transporting agricultural materials

Bulgakov

Ivanovs

Beloev

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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The paper presents the design of a flexible screw conveyor working body and a laboratory setup for experimental studies of determining its performance in transporting agricultural materials. Studies of conveying capacity have allowed to determine its dependence on many factors that characterize the process, namely: screw rotation frequency n, coefficient ψ of line filling, inner diameter of the pipeline shell D. To determine the effect of these parameters on the performance of the screw conveyor, a full-factor experiment was conducted, the results of which showed that the dominant factor influencing the performance value is the rotation frequency of the working body n, and the least influential is the diameter of the housing D, but the value of the cooefficient ψ of the main also has a significant effect on the performance of the transportation process. So, when changing the rotation frequency of the working body within the range of 300...800 rpm, the productivity increases by 50% for barley and 48% for industrial salt, when changing the line filling ratio within the range of 0.3...0.5, the productivity increases by 16% for barley and 18% for industrial salt, and when changing the pipeline diameter D from 0.08 m to 0.1 the productivity increases by 0.7% for barley and 0.2% for industrial salt.

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Section: Introductionmentioning

confidence: 99%

Experimental research on performance of flexible screw conveyor when transporting agricultural materials

Bulgakov

Ivanovs

Beloev

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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Study of the Movement of Soil Particles on the Surface of a Screw Tillage Working Body

Pylypaka¹,

Klendii²,

Kresan³

2022

Tehnìka ta energetika

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This study considers the interaction of soil particles with a screw tillage body, the working surface of which is made in the form of a deployed helicoid and substantially differs from the screw. Furthermore, the unfolded surface is characterised by manufacturability of the working body, since it is possible to calculate the geometric dimensions of a flat workpiece, which is formed into a finished product by simple bending with minimal plastic deformations. The purpose of this paper was to conduct theoretical and experimental studies of the movement of soil particles along the helical surface of the tillage working body, which is made in the form of a deployed helicoid. Mathematical modelling of the processes of movement of soil particles along the helical surface of a tillage working body was described based on general laws and principles of analytical and differential mathematics, theoretical and analytical mechanics. Experimental studies were carried out using a methodology with elements of mathematical statistics, mathematical methods of optimal planning of a multifactor experiment. The analysis of the results of experimental and theoretical studies was performed using applied computer programmes and systems. Experimental studies were conducted according to standard and independently developed methods. Results: a mathematical model of the movement of soil particles along the helical surface of the tillage body was developed, and it was established that when the angle of attack of the helical tillage working body increases, the lifting value of soil particles increases and the area of their dispersion by the helical surface increases. The value of the coefficient of friction does not substantially affect the shape of the trajectory of the soil particle. The quality of loosening the soil most depends on the angle of attack of the screw surface and the angular speed of rotation of the working body. The materials of this paper can be used by scientists for further research and practices in the selection of tillage units.

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Transportation of a material particle by the operating mechanism of an agricultural machine in the form of a vertical screw confined by a coaxial stationary cylinder

Pylypaka¹,

Klendii²

2022

Tehnìka ta energetika

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The use of vertical augers in screw conveyors significantly expands the operational capabilities of such mechanisation equipment for performing loading and unloading technological operations. However, the existing designs of vertical screws do not fully meet the operational requirements. Their main disadvantages are increased energy consumption, especially with their significant overall dimensions, which depend on the influence of friction of the process material on the conveyor surfaces. Therefore, the study considers the movement of a material particle by the operating mechanism of an agricultural machine in the form of a vertical screw confined by a coaxial stationary cylinder and establishes the dependence of the speed of transportation of a material particle on the influence of the particle friction coefficient on the surface of the screw and on the surface of the limiting cylinder. The purpose of the study is to determine the parameters of the movement of agricultural material particles when they interact with the helical surface of the operating mechanism of a vertical conveyor in the form of a screw that rotates around the axis and the surface of a coaxial fixed cylindrical casing. Mathematical modelling of the processes of movement of soil particles along the helical surface of the operating mechanism is described on the basis of general laws and principles of analytical and differential mathematics, theoretical and analytical mechanics. As a result of the study, the differential equations of movement of a particle of agricultural material on the helical surface of the screw, which rotates around its axis in a fixed cylinder, were compiled. The equation is solved using numerical methods and the trajectories of the relative motion of the particle along the helical line – the edge of the screw, which is common to the surface of the screw and the limiting cylinder are constructed. The friction forces of the material particle on the surfaces of the screw and casing are also considered. The limit value of the helical line lifting angle is found when the particle lifting becomes impossible at a given angular velocity of screw rotation. The influence of the friction angles and radius of the limiting cylinder on the particle lifting speed is estimated. Graphs of kinematic characteristics as a function of time are given. The materials of the study can be used by researchers for further investigation and by practitioners in the selection of conveyors for transporting agricultural materials

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Substantiation of the Parameters of a Horizontal Conveyer-Cleaner of Root Crops

Cited by 4 publications

References 0 publications

Experimental research on performance of flexible screw conveyor when transporting agricultural materials

Experimental research on performance of flexible screw conveyor when transporting agricultural materials

Study of the Movement of Soil Particles on the Surface of a Screw Tillage Working Body

Transportation of a material particle by the operating mechanism of an agricultural machine in the form of a vertical screw confined by a coaxial stationary cylinder

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