Monitoring the impact of tyre inflation pressure on tensile properties of forest tractors

Helexa, Milan

doi:10.17221/49/2013-rae

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…The next most widely used measure to improve the vehicle traction performance is a change in tire inflation pressure [ 37 , 38 , 39 ]. Lower inflation pressure increases the tire contact area, improving the tire function under poor traction conditions.…”

Section: Resultsmentioning

confidence: 99%

Frequency Spectra Analysis of Drawbar Pulls Generated by Special Driving Wheels Improving Tractive Performance

Abrahám

Majdan

Kollárová

et al. 2021

Sensors

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Driving wheel operation is characterized by force interactions with the ground, manifested in the form of vibrations. Signals generated by driving wheels can be analyzed in the frequency spectrum of tractor drawbar pull. The paper presents the analysis of a drawbar pull signal generated by a tractor equipped with two types of special driving wheels and standard tires. Beside the evaluation of special driving wheels’ properties according to drawbar power, the frequency spectra of measured signals were analyzed using a fast Fourier transformation. The model spectrum intervals for the standard tires, spike tires, and blade wheels were calculated according to the number of rubber lugs, blades, or spikes and compared with the experimental results. The results showed that the specific frequencies typical for blades and spikes were identified in model spectrum intervals. In the case of standard tires, the spectrum components typical for rubber lugs of the tire tread pattern were not identified. The highest amplitude of the typical frequency component was detected in the case of blades wheels, which showed the highest difference in drawbar power in comparison with the standard tires. Smaller dimensions of spikes resulted in lower amplitude and lower difference in drawbar power in comparison with the standard tires.

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Section: Resultsmentioning

confidence: 99%

Frequency Spectra Analysis of Drawbar Pulls Generated by Special Driving Wheels Improving Tractive Performance

Abrahám

Majdan

Kollárová

et al. 2021

Sensors

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show abstract

“…Battiato and Diseren ( 2013) stated that the tractor developed higher drawbar pull when tyre inflation pressure decreased and wheel load increased. Gee-Clough, McAllister and Evernden (1977); Helexa (2014); Kučera, Helexa and Molenda (2016); Helexa et al (2022) presented the concept of tractor tractive performance depending on tyre inflation as well. In case of the spike tyres, wheel load and tyre inflation pressure do not have to be changed because the wheels grip is improved by the steel spikes.…”

Section: Properties and Application Of Special Driving Wheelsmentioning

confidence: 99%

Drawbar Performance of Tractor Tyres with Steel Spikes At 100%-Wheel Slip

Abrahám

Zubčák

Majdan

et al. 2022

Acta Technologica Agriculturae

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A driving wheel is a part of a tractor, which transmits forces from a tyre to the ground. Therefore, it affects the tractor movement and the pulling of an implement. The paper is aimed at a tractive performance evaluation of special driving wheels based on drawbar pull at 100%-slip. These wheels consist of steel spikes to be applied in the base or working position. The design is characterized by the spikes placed in a tyre-tread pattern. The rubber lugs of the tyre are higher than spikes, therefore, they are not in contact with the ground in the base position. The spikes in the working position exceed the tyre diameter to be in contact with the ground. Tests were performed on a grass plot at a relatively low soil moisture. The spike tyres were compared with the standard tyres using a sub-compact tractor. An increase in drawbar pull reached a statistically significant value of 15.9% in the 2nd gear and 16.7% in the 1st gear.

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“…For example, the use of a four-wheel drive tractor instead of a rear-wheel drive tractor [9][10][11][12], tracks instead of wheels [13][14][15], dual wheels instead of single wheels, high-performance radial ply tires [16] instead of outdated bias ply tires, etc. Finally, tire inflation pressure [17][18][19][20] is a very important operation factor that positively affects tractor tractive performance and soil compaction due to an optimum ratio between the tire contact patch [21,22] and the tire rolling resistance. Today's modern tractors allow for an automatic change in tire inflation pressure based on the actual operation regime of the tractor, whether working in a field or during road transport.…”

Section: Introductionmentioning

confidence: 99%

Spike Device with Worm Gear Unit for Driving Wheels to Improve the Traction Performance of Compact Tractors on Grass Plots

Abrahám,

Majdan,

Kollárová

et al. 2024

Agriculture

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In general, energy loss reduction via the interaction of tires with the ground improves tractor traction performance when a drawbar pull is generated. This paper is examines the driving wheels with steel spikes for a tractor equipped with modern radial tires. An improved design of the spike device that allows for the change between an active and inactive position of the spikes is presented. The traction performance of a compact articulated tractor with the spike device was tested on a grass plot with two soil moisture contents (SMC). The highest difference in the drawbar pull in the range from 14.2% to 40.5% and from 17.1% to 36.8% was reached by the spikes in the active position in comparison with the tires without spikes, which were at the slip range from 45% to 5% in the case of the low SMC when the test tractor was in the 3rd and 1st gear. The motion resistance difference between the spikes in the active position and the tires without spikes was 11.8% and 2.5% at the low and medium SMC, respectively. At the low and medium SMC, the highest tractive efficiency of 0.765 (0.721) and 0.757 (0.731) was reached by the spikes in the active position when the test tractor was in the 1st (3rd) gear in comparison with 0.736 (0.7) and 0.723 (0.708) in the case of the tires without spikes. The results indicated that the spike device allowed for the improvement of tractor tractive performance.

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Monitoring the impact of tyre inflation pressure on tensile properties of forest tractors

Cited by 4 publications

References 2 publications

Frequency Spectra Analysis of Drawbar Pulls Generated by Special Driving Wheels Improving Tractive Performance

Frequency Spectra Analysis of Drawbar Pulls Generated by Special Driving Wheels Improving Tractive Performance

Drawbar Performance of Tractor Tyres with Steel Spikes At 100%-Wheel Slip

Spike Device with Worm Gear Unit for Driving Wheels to Improve the Traction Performance of Compact Tractors on Grass Plots

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