Statistical model for analysis of mass, power and traction characteristics of agricultural tractors

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Abstract

BACKGROUND: One of the challenges of modern agricultural industry is the integration of digital and robotic technologies, pursuing the reduction of the human factor in the production chain. Transition from manned agricultural transport and technological machines to autonomous ground mobile facilities (AGMF) is of particular interest. An agricultural tractor is a universal pull-push mobile system of the agricultural industry (ACI), so it can be used as an optimal platform for the design of the AGMF chassis. At the design stage of unmanned ground mobile systems, it is necessary to develop such a technical solution that allows the AGMF to function effectively without loss of mobility. The developed drawbar load has a significant impact on the mobility of the agricultural tractor on the ground. Therefore, in order to obtain an optimal technical solution, it is necessary to define the interrelation between the key characteristics of tractors, helping to select the primary parameters of the AGMF chassis.

AIM: Definition of interrelation between technical and design parameters of wheeled and tracked agricultural tractors as mathematical dependencies in order to select primary parameters of the AGMF.

METHODS: Building of the statistical model was based on compiling a sample of the existing models of agricultural tractors and determining the type of mathematical regularities between technical parameters as regression equations.

RESULTS: Regression equations defining the interrelation between tractor engine power, gross weight, specific engine power and specific ground pressure were obtained, and primary technical parameters of AGMF were selected.

CONCLUSION: The practical value of the study lies in the possibility of using the obtained parameters in the selection of primary parameters in the design, ensuring the competitiveness of the machine in a certain traction-power segment and compliance with agro-technological requirements.

About the authors

Sergey S. Zhukov

Nizhny Novgorod State Engineering and Economic University

Author for correspondence.
Email: ser-9.02.94@yandex.ru
ORCID iD: 0000-0002-8090-5461
SPIN-code: 6476-8929

Senior Lecturer of the Mathematics and Computer Engineering Department

Russian Federation, Knyaginino

Vladimir S. Makarov

Nizhny Novgorod State Technical University named after R.E. Alekseeva; State University of Management

Email: makvl2010@gmail.com
ORCID iD: 0000-0002-4423-5042
SPIN-code: 9834-6239

Dr. Sci. (Engineering), Professor of the Construction and Road Machines Department, Senior Researcher Associate of the Reverse Engineering Lab

Russian Federation, Nizhniy Novgorod; Moscow

Vladimir V. Belyakov

Nizhny Novgorod State Technical University named after R.E. Alekseeva

Email: belyakov@nntu.ru
ORCID iD: 0000-0003-0203-9403
SPIN-code: 3944-4416

Dr. Sci. (Engineering), professor, Professor of the Construction and Road Machines Department

Russian Federation, Nizhniy Novgorod

Anton А. Klushkin

Nizhny Novgorod State Technical University named after R.E. Alekseeva

Email: aak-nntu@ya.ru
ORCID iD: 0009-0009-3141-6029
SPIN-code: 2266-8679

Assistant lecturer of the Construction and Road Machines Department

Russian Federation, Nizhniy Novgorod

References

  1. State Standard 27021-86 Agricultural and forestry tractors. Towing classes. Moscow: Ministry of Tractor and Agricultural Engineering of the USSR; 1987. (In Russ.)
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  4. Belyakov VV, Belyaev AM, Bushueva ME, et al. The concept of mobility of ground transport and technological machines. Proceedings of NSTU n.a. R.E. Alekseev. 2013;3(100):145–175. (In Russ.) EDN: REANDH.
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  7. Kim WS, Kim YJ, Baek SY, et al. Traction performance evaluation of a 78-kW-class agricultural tractor using cone index map in a Korean paddy field. J. Terramechanics. 2020;91:285–296. doi: 10.1016/j.jterra.2020.08.005 EDN: DYQIOI
  8. Bekker MG. Theory of Land Locomotion: The Mechanics of Vehicle Mobility. Michigan: University of Michigan Press; 1956. doi: 10.3998/mpub.9690401
  9. Wong JY. Terramechanics and Off-Road Vehicle Engineering. Elsevier; 2010. doi: 10.1016/C2009-0-00403-6 EDN: YEWVEY

Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. Share of tractor fleet among all types of machines,%.

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3. Fig. 2. Types of propulsion systems: а, wheeled propulsion system (source: https://dostavkatk.ru); b, tracked propulsion system (source: https://blagoveschensk.km124.ru); c, wheeled- tracked propulsion system (source: https://atgarant.ru/).

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4. Fig. 3. Dependence of total tractor weight on the traction force on the drawbar load.

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5. Fig. 4. Dependence of engine power on the total weight of the tractor.

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6. Fig. 5. Dependence of specific engine power on total tractor weight.

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7. Fig. 6. Dependence of specific ground pressure on the total tractor weight.

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