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Determination of the Trajectory of Curvilinear Motion of Front Steering Wheels Driven Tractor

REFERENCES Adamchuk V, Bulgakov V, Nadykto V, Ihnatiev Y, Olt J (2016): Theoretical research into the power and energy performance of agricultural tractors. Agronomy Research, 14, 1511–1518. Anilovich VY, Vodolazhchenko YT (1976): Designing and calculation of agricultural tractors. Mechanical Engineering, Moscow. (in Russian) Auernhammer H (2001): Precision farming – the environmental challenge. Computers and Electronics in Agriculture, 30, 31–43. Bulgakov V, Adamchuk V, Arak M, Nadykto V, Kyurchev V, Olt J (2016): Theory of vertical

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Analysis of Power Equipment Level on the Example of Farm Tractors in Selected Farms of Przeworsk Province

References Czarnocki, S., Wielogórska, G., Turska, E. (2011). Wpływ niektórych czynników na wiek ciągników i maszyn rolniczych w wybranych gospodarstwach środkowo-wschodniej Polski. Inżynieria Rolnicza , 9 (134), 15-21. Grześ, Z. (2008). Wpływ aktualizacji niektórych wskaźników eksploatacyjno-ekonomicznych na koszty eksploatacji ciągników rolniczych nowej generacji. Inżynieria Rolnicza, 2 (100), 37-42. Juściński, S. (2012a). An analysis of the new tractors distribution logistics in the aspect of the European Union programmes for supporting

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Design and Verification of Tractor Wheels Equipped with Automatically Extensible Blades

References HUJO, Ľ. - KOSIBA, J. - JABLONICKÝ, J. - DRABANT, Š. 2012 a. Theoretical design of a laboratory test device for the testing of tractor hydraulics. In Technics in Agrisector Technologies 2012. Nitra : SUA, pp. 68-73. HUJO, Ľ. - KOSIBA, J. - JABLONICKÝ, J. - TKÁČ, Z. 2012b. Measurement of load characteristics of tractor three-point hitch. In Technics in Agrisector Technologies 2012. Nitra : SUA, pp. 4-10. JABLONICKÝ, J. - HUJO, Ľ. - TKÁČ, Z. - KOSIBA, J. 2012. Analysis of the force and kinematic

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Drawbar Parameters of Tractor with Prototypes of Driving Wheels and Standard Tyres

References ABRAHÁM, R. - MAJDAN, R. - DRLIČKA, R. 2015. Possibilities of improving the wheel tractor drive force transmission to soil. In Research in Agricultural Engineering, vol. 61, special issue, pp. 37-42. Battiato, A. - Diseren, E. 2013. Influence of tyre inflation pressure and wheel load on the traction performance of a 65 kW MFWD tractor on a cohesive soil. In Journal of Agricultural Science, vol. 5, no. 8, pp. 197-215. DRLIČKA, R. - KROČKO, V. 2005. Comparison of the accident rate development in

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The Effect of Tractor Driving System Type on its Slip and Rolling Resistance and its Modelling Using Anfis

References ABBASPOUR-GILANDEH, Y. – HAGHIGHAT-SHISHVAN, S. 2011. Extended octagonal ring transducers for measurement of tractor-implement forces. In Instruments and Experimental Techniques, vol. 54, no. 1, pp. 136–140. BARBOSA, L. A. P. – MAGALHAES, P. S. G. 2015. Tire tread pattern design trigger on the stress distribution over rigid surfaces and soil compaction. In Journal of Terramechanics, vol. 58, pp. 27–38. BATTIATO, A. – DISERENS, E. 2013. Influence of tyre inflation pressure and wheel load on the traction performance of a 65kW MFWD

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Morphology Analysis of Friction Particles Generated in Tractor Transmission Oils

, Š. – GLOS, J. – JABLONICKÝ, J. – VOZÁROVÁ, V. – PETROVIĆ, A. – CSILLAG, J. 2016. Monitoring oil degradation during operating tests. In Agronomy Research, vol. 14, no. 5, pp. 1626–1634. KOWANDY, C. – RICHARD, C. – CHEN, Y. M. 2008. Characterization of wear particles for comprehension of wear mechanisms. Case of PTFE against cast iron. In Wear, vol. 265, pp. 1714–1719. KUČERA, M. – ALEŠ, Z. – PEXA, M. 2016. Detection and characterization of wear particles of universal tractor oil using a particles size analyzer. In Agronomy Research, vol. 14, no. 4, pp

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The Study of Movement of the Wide Span Tractor-Based Field Machine Unit with Power Method of its Control

References ADAMCHUK, V. V. 2001. Agriculture of the future and technology for it. In Bulletin of Agrarian Science, no. 11, pp. 55–60. (In Ukrainian: Zemlerobstvo majbutnogo i tekhnika dlja nego. Vesnik agrarnoj nauky). BULGAKOV, V. – ADAMCHUK, V. – OLT, J. 2017. Study into movement of wide span tractors (vehicles) used in controlled traffic farming. In 28 th Daaam International Symposium on Intelligent Manufacturing and Automation – Vienna, 2017, pp. 199–208. CHAMEN, T. 2015. Controlled traffic farming – from world wide research to adoption in

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Concept and Model of Terrain Wheeled Tractor with Hybrid Drive

Abstract

The article presents construction concept of a tractor with hybrid, diesel-hydraulic and diesel-electric drive meant for the use in livestock holdings. The tractor is enabled to cover short distances with the combustion engine switched off. This solution uses independent engines to propel front and rear axles. This article presents a computer model and simulation results for the project of a hybrid, diesel-electric tractor based on a benchmark machine Fendt 516.

Aside from the ability to drive with diesel engine switched off, the proposed solution has additional positive features allowing smooth transition of relation of peripheral speed of the front and rear wheels. It enables to obtain higher tractive powers for various conditions in a broader range than for a traditional solution (with propelling both axles with one engine through different transmission systems and specific difference of peripheral speed of the wheels). The computer model was built on the basis of the benchmark machine.

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On Changes in Concept and General Composition of Agricultural Tractors

Abstract

Conclusions on the analysis of the state of development in the tractor industry are formulated, aspects of the forecasting concept of transformation, general layout solutions and the theory of promising tractor units with new propulsion systems are considered, a general approach to the pre-design substantiation of new generation tractors is presented.

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Stand damage when harvesting timber using a tractor for extraction

References Athanassiadis D. 1997. Residual stand damage following cutto- length harvesting operations with a farm tractor in two conifer stands. Silva Fennica , 31(4): 461-67. Barzdajn W., Ceitel J., Zientarski J. 1997. Wyróżniki leśnictwa wykorzystującego i chroniącego przyrodę. Sylwan , 4: 119-127. Erler J. 2005. Was kostet die Rückegasse. AFZ-der Wald , 6: 297-301. Giefing D.F. 1990. Wpływ technologii pozyskiwania i transportu drewna w cięciach przedrębnych na szkody i jakość

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