<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The research concern selected traction properties of Massey Ferguson 7475 wheeled tractor, which were carried out on various deformable surfaces i.e. soil: after ploughing, sodded and with rye fore crop. The impact of driving speed on tractive power and force with 2WD and 4WD drive was investigated. Physical and chemical properties of soil during testing were characterised by moisture, compactness and maximum shearing stresses. Studies on traction properties were carried out with the use of two tractors: Massey Ferguson 7475 and New Holland 5040. During measurements, tractors were connected with a tow rod, where a strain force transducer was mounted. The stand enabled also measurement of theoretical speed. As a result of analyses of the obtained results, characteristics of tractive force and towing power as a function of slip were made. The tests confirmed that the use of four-wheel drive is unjustified because it improves these tractive parameters of a tractor. It was reported that the maximum force and towing power are generated for the lowest values of slip which is equal to 0.1 on the sodded surface. However, value of this power is the lowest in comparison to other surfaces. The highest value of the adhesion coefficient was reported on soil with rye fore crop.</p></abstract>

The research concern selected traction properties of Massey Ferguson 7475 wheeled tractor, which were carried out on various deformable surfaces i.e. soil: after ploughing, sodded and with rye fore crop. The impact of driving speed on tractive power and force with 2WD and 4WD drive was investigated. Physical and chemical properties of soil during testing were characterised by moisture, compactness and maximum shearing stresses. Studies on traction properties were carried out with the use of two tractors: Massey Ferguson 7475 and New Holland 5040. During measurements, tractors were connected with a tow rod, where a strain force transducer was mounted. The stand enabled also measurement of theoretical speed. As a result of analyses of the obtained results, characteristics of tractive force and towing power as a function of slip were made. The tests confirmed that the use of four-wheel drive is unjustified because it improves these tractive parameters of a tractor. It was reported that the maximum force and towing power are generated for the lowest values of slip which is equal to 0.1 on the sodded surface. However, value of this power is the lowest in comparison to other surfaces. The highest value of the adhesion coefficient was reported on soil with rye fore crop.

Analysis of Traction Properties of Massey Ferguson 7475 Tractor on Selected Deformable Surfaces

Institute of Agricultural Engineering, Wroclaw University of Environmental and Life Sciences

Agricultural Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The research concern selected traction properties of Massey Ferguson 7475 wheeled tractor, which were carried out on various deformable surfaces i.e. soil:...

Analysis of Traction Properties of Massey Ferguson 7475 Tractor on Selected Deformable Surfaces

Published Online: Jun 18, 2016

Page range: 137 - 145

Received: Nov 01, 2015

Accepted: Jan 01, 2016

DOI: https://doi.org/10.1515/agriceng-2016-0014

Keywords
traction force, adhesion ratio, towing power, driving tyre

© 2016 Krzysztof Pieczarka et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Analysis of Traction Properties of Massey Ferguson 7475 Tractor on Selected Deformable Surfaces

Published Online: Jun 18, 2016

Page range: 137 - 145

Received: Nov 01, 2015

Accepted: Jan 01, 2016

DOI: https://doi.org/10.1515/agriceng-2016-0014

Keywordstraction force, adhesion ratio, towing power, driving tyre

© 2016 Krzysztof Pieczarka et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
traction force, adhesion ratio, towing power, driving tyre