Research of dynamics of turning of machine-tractor aggregate with tractor on wheeled-crawler mover

Fashutdinov, Marat; Khafizov, Kamil; Galiev, Ilgiz; Gabdrafikov, Fanil'; Khaliullin, Farit

doi:10.1051/bioconf/20201700056

Cited by 7 publications

(5 citation statements)

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“…Зокрема, висвітлена спроба оптимізувати шляхові точки і продемонструвати створення запланованого шляху для автономних тракторів-косарок з урахуванням поворотів (Song et al, 2013) У статті (Fashutdinov, 2020) для машиннотракторних агрегатів з колісно-гусеничним рушієм з напівзчіпним ходом отримані теоретичні формули визначення фактичного радіуса повороту, моменту опору повороту і моменту обертання. Теоретичні передумови підтверджуються експериментальними дослідженнями маневреності машинно-тракторного агрегату з трактором на напівзчіпним ходом, виконаним в якості експериментального зразка.…”

Section: вступunclassified

Curvilinear Movement of a Four-Wheel Machine Using a Satellite Navigation System

Dovzhik¹,

Kalnaguz²,

Sіrenko³

2020

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Tractors when performing agricultural and transport work move in a straight or curved trajectory, the curvature of which is constantly changing. Compilation of equations of curvilinear motion is one of the main tasks of modeling the turning. Fundamentally different assumptions underlying the description of the force interaction of the wheeled and tracked propulsion with the soil, led to the formation of different methodological approaches in the study of curvilinear motion of machines. Many of them have tried to obtain the equation of the trajectory by analytical, graphical and graph-analytical methods. This uses both approximate methods and accurate mathematical models that are too complex to use in practice. The necessity of studying the trajectories of unsteady motion is substantiated in the article. Full automation of control of work of machines and machine-tractor units without participation of the driver needs to provide receiving the exact information on position of the unit concerning the set trajectory during all time of work. The aim of the study is to experimentally confirm the theoretical universal equations in parametric form for a given trajectory of curvilinear motion of a four-wheeled machine with controlled front wheels for sections of entrance to turn and exit of turn depending on the swing angle of the frame car taking into account the intensity of turning. In this article, the analytical equations confirm the curved path of a four-wheeled vehicle with front steered wheels by using parametric equations depending on the swing angle of the frame car φ. Based on analytical equations for a given trajectory of curvilinear motion in parametric form for the car, experimental trajectories were obtained taking into account the intensity of turning the front wheels or car steering wheel to enter the turn and exit the turn of both directions (left and right) car Renault Logan using satellite navigation system. The results of the article can be used in the future to plan MTU reversals, which should be made the most rational and economical, when performing agricultural work, to limit unproductive power consumption and prevent damage to land on which reversals are performed, or to automatically for automatic control of units and machines.

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Section: вступunclassified

Curvilinear Movement of a Four-Wheel Machine Using a Satellite Navigation System

Dovzhik¹,

Kalnaguz²,

Sіrenko³

2020

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“…Numerous global studies also aimed to study the movement of mobile units on a wheeled caterpillar mover. For example, M. Fashutdinov et al (2020) considered the theoretical prerequisites for modelling the dynamics of the rotation of agricultural units with a wheel-caterpillar mover. The authors obtained mathematical models for determining the indicators of the turning of agricultural units.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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The research is devoted to the topical problem of the efficiency of turning wide-span bridge machines in the track farming system. The research aims to study the curvilinear movement along the soil traces of a constant technological track of an arbitrary multi-supported bridge machine, considering its design and method of turning, parameters, modes of movement and loading. Experimental studies were conducted, involving the use of a modern strain track and specially designed equipment for electrical measurements of non-electrical quantities. The processing of research data was carried out on a personal computer. A methodology for compiling private models of turning off the bridge vehicle moving along the soil trace of the constant technological track was developed. As a result of the joint solution problem of the bridge machine turning, it is possible to determine all output parameters of curvilinear motion: trajectory, tractive forces, turning radius, slipping, and actual speeds. The force interaction of the bridge machine's undercarriage with the soil trace of a constant track is presented based on flat sliding with a variable anisotropic friction coefficient of adhesion φ yd , depending on the properties of the track. As the radius of the wheel, the width of its tire and the air pressure in it, as well as the vertical load that acts on it, the coefficient of traction of the bridge machine φ yd increases, which may cause higher slippage. The adequacy of the model of stationary turning of the overhead machine is confirmed by experimental estimation of the

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“…Agricultural production is one of the main sectors of the country's economy, which constantly needs to attract mobile energy resources to carry out technological processes in crop and livestock production. The most promising way to meet the need for agricultural production in energy products is to increase their unit capacity [1,2]. In this regard, the gas turbine supercharged has found its wide use in connection with the ability to increase the single power of the internal combustion engine (by 40-50%) without complicating its design and with almost the same mass-size parameters.…”

Section: Introductionmentioning

confidence: 99%

Justification of the parameter that determines the ability of turbochargers of agricultural machinery engines to function

et al. 2021

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As a result of the analysis of statistics on the main failures of the turbocharger of tractor engines in agricultural production, it can be concluded that it is the condition of its bearing node, in the first place, determines the performance of the entire turbocharger. This ultimately affects the duration of the turbocharger rotor after the engine stops. The article considers the method of determining the rotation time of the turbocharger rotor by inertia depending on the following factors: the time of the pressure drop in the turbocharger grease system, the gap in the turbocharger bearing node, the frequency of rotation of the rotor before the engine stops. The results of experimental studies on the timing of the turbocharger rotor rotation after the engine stop for the regular mode of greasing the bearing node and when using an individual lubricant system are presented. Based on the experimental values obtained, it is concluded that the main indicator of the performance of the turbocharger is the duration of rotation of its rotor after the engine stops and the application of the individual system of lubrication of the bearing node of the turbocharger reduces the cost of bearing resource and increases the resource of the entire turbocharger of agricultural machinery engines at least twice.

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Research of dynamics of turning of machine-tractor aggregate with tractor on wheeled-crawler mover

Cited by 7 publications

References 1 publication

Curvilinear Movement of a Four-Wheel Machine Using a Satellite Navigation System

Curvilinear Movement of a Four-Wheel Machine Using a Satellite Navigation System

Untitled

Justification of the parameter that determines the ability of turbochargers of agricultural machinery engines to function

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