Theoretical background for increasing grip properties of wheeled tractors based on their rational ballasting

Bulgakov, Volodymyr; Булгаков, Володимир Михайлович; Булгаков, Владимир Михайлович; Надикто, Володимир Трохимович; Nadykto, Volodymyr; Kiurchev, Serhii; Кюрчев, Сергій Володимирович; Кюрчев, Сергей Владимирович; Nesvidomin, Victor; Ivanovs, Semjons; Olt, Jüri

doi:10.15159/jas.19.07

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…To solve this problem, the installation of ballast on the front axle of the tractor is considered in [16]. In contrast to the predecessors in [10][11][12][13][14][15][16], the justification of the level of mechanical ballasting of wheeled tractors was carried out taking into account the permissible maximum pressure of the tractor wheels on the soil and the maximum load capacity of the wheel tires. The procedure is based on taking into account the ecophilic properties of the tire.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Although the state of static loading of the front axle of the tractor by a front plow without a support wheel is described in detail in works [5,16], the dynamics of this process were almost not investigated.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…From our review of the literature [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], it follows that most research results cannot be applied in the case of using frontal plows in a unit configured according to the "push-pull" scheme since they do not take into account the statics and dynamics of the movement of plowing units. And there are also a few scientific works that consider the operation of a plow unit with a front plow without a support wheel [5,[18][19][20][21][22].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Determining vertical oscillations of front-plow tractor without support wheel

Nadykto,

Golub,

Kyurchev

et al. 2024

EEJET

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The object of this study is a tractor with a front plow without a support wheel. One way to avoid the use of ballast is to use front-mounted plows that operate under the "push" mode. As a rule, such plows are equipped with at least one supporting wheel. The presence of the latter complicates the structure of the plow and, of course, affects the degree of vertical load on the steered wheels of the mobile vehicle. With the help of the constructed mathematical model and the corresponding amplitude and phase frequency characteristics, the dynamics of vertical oscillations of the front axle of a tractor with a front mounted plow without a support wheel were investigated. Vertical fluctuations of the total force acting on the tractor from the side of the plow were considered as a disturbing influence. According to the simulation results, an increase in the vertical load of the front axle of the tractor by 600 kg causes a desired decrease in the value of the amplitude and an increase in the phase of external disturbances of the dynamic system. The higher the frequency of disturbance oscillations, the more acceptable these characteristics become. It was established that in order to improve the response of the studied dynamic system to disturbances, it is necessary to reduce the stiffness coefficient of the tires of the front wheels. In practice, this is achieved by adjusting the air pressure in the tires. The amplitude-frequency characteristics of the system almost do not change when the damping coefficient of the tires of the front wheels of the tractor is increased in the range from 1 to 3 kN·s/m, while the phase-frequency characteristics improve. This is especially noticeable at the frequencies of oscillations of the disturbing influence in the range of 0–10 s-1. The results could be used as a basis for evaluating the efficiency of tractors with a front plow without a support wheel in tillage operations. Such efficiency can be achieved under the condition of practical implementation of the recommendations proposed in this paper regarding the selection of design parameters of tires for the front wheels of the tractor

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Determining vertical oscillations of front-plow tractor without support wheel

Nadykto,

Golub,

Kyurchev

et al. 2024

EEJET

View full text Add to dashboard Cite

show abstract

“…The effects on soil compaction caused by tractor ballasting have been outlined in [43], in which study the equation for determining the track depth after the tractor wheels have passed is given, even if this equation only includes tractor manufacturing parameters (operating vertical load on the wheel, tire inflation pressure, tire diameter, and tire width) and does not contain soil parameters.…”

Section: Introductionmentioning

confidence: 99%

Effects of Tractor and Soil Parameters on the Depth of the Permanent Traffic Lanes in Controlled Traffic Farming Systems

et al. 2022

Self Cite

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One of the basic requirements for controlled traffic farming (CTF) is the precise motion of all agricultural equipment on permanent traffic lanes (PTL). Tractors of machine-tractor units are then equipped with a GNSS (global navigation satellite) RTK (real-time kinematic) system, even though in many parts of the world, and Europe as well, satellite navigation is not yet used. In this case, for implementation of the CTF system, it needs to lay such PTL tracks that would be sufficiently visible, especially when using the CTF system in multi-year agricultural crop cultivation. The PTL track depth is influenced by both tractor and soil parameters and, in this paper, this influence is studied considering the dimensionless π-terms of the similarity theory. To obtain a greater depth of PTL tracks (h), the soil cone index must be low. The low density of the soil is important, even if its effect on the parameter h is less than that of the soil cone index. A greater depth of PTL tracks is also obtained by increasing the inflation pressure in the tractor tires. Ballasted wheels are the least effective for increasing the value of the parameter h.

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A theoretical and experimental study of the traction properties of agricultural gantry systems

Bulgakov¹,

Olt²,

Kuvachov³

et al. 2020

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Theoretical background for increasing grip properties of wheeled tractors based on their rational ballasting

Cited by 4 publications

References 7 publications

Determining vertical oscillations of front-plow tractor without support wheel

Determining vertical oscillations of front-plow tractor without support wheel

Effects of Tractor and Soil Parameters on the Depth of the Permanent Traffic Lanes in Controlled Traffic Farming Systems

A theoretical and experimental study of the traction properties of agricultural gantry systems

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