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

Abrahám, Rudolf; Majdan, Radoslav; Kollárová, Katarína; Tkáč, Zdenko; Olejár, Martin; Matějková, Eva; Kubík, Ľubomír

doi:10.3390/s21092903

Cited by 4 publications

(4 citation statements)

References 37 publications

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“…The effect of spike tires on tractor vibrations due to drawbar pull oscillation was analyzed and compared with the standard tires and special type of steel wheels with grousers. Study [64] presented a lower vibration level of spike tires than special steel wheels with grousers.…”

Section: Drawbar Pull At 100% Wheel Slipmentioning

confidence: 84%

Fatigue Analysis of Spike Segment of Special Tractor Wheels in Terms of Design Improvement for Chernozem Soil

et al. 2022

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The driving wheels affect the tractive efficiency, fuel consumption, and soil compaction. This study presents the fatigue analysis of a spike segment that is the main part of an innovative driving wheels designed to improve tractor tractive performance. The design improvement was proposed for Chernozem soil allowing the full penetration of spikes. The spike segment was loaded by forces resulting from the maximum drawbar pull at 100% wheel slip and penetrometer resistance. A drawbar pull increase caused by the spike tires was also calculated. The experiments were performed using a subcompact tractor in the first gear on a grass field at soil moisture 18.8%. Gerber theory was used for the fatigue analysis performed using ANSYS software. The dependances of the safety factor on the horizontal rod diameter and the number of load cycles was constructed. The safety factor of 1.73 calculated for the spike segment made of steel S355 is suitable for the reduction of the actual horizontal rod diameter (12 mm). The fatigue analysis showed a safety factor of 1.28 at 100,000 load cycles in the case of a reduced diameter (10 mm). A diameter of 8 mm was also simulated, but the calculated safety factors do not allow it in terms of safe operation.

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Section: Drawbar Pull At 100% Wheel Slipmentioning

confidence: 84%

Fatigue Analysis of Spike Segment of Special Tractor Wheels in Terms of Design Improvement for Chernozem Soil

et al. 2022

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“…Therefore, soil mechanical properties affected the contact pressure below spikes and force oscillation during the wheel rotation. Analysing the drawbar pull signals by Fast Fourier transformation, Abrahám et al (2021) identified the frequency spectra typical for the spike segments. It showed the dependency of the number of spike segments on oscillation frequency.…”

Section: Resultsmentioning

confidence: 99%

“…The design of spike tyres was developed at the Slovak University of Agriculture in Nitra (Slovak Republic) and investigated by Majdan et al (2018); Abrahám, Majdan and Drlička (2019); Abrahám et al (2012). The tyres TS-02 6.5/75-14 4PR TT (Mitas, a. s., Prague, Czech Republic) were used for the special driving wheels.…”

mentioning

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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“…The device was developed and continuously improved at the Slovak University of Agriculture in Nitra (Slovak Republic) and allows for the setting of the active or inactive spike position. The design of this device is based on the fatigue analysis of a spike segment published in reference [26] and on a previous design version published in reference [27]. The fatigue analysis showed that the diameter of the horizontal rod connecting the left and right arms (Figure 2d,e) can be reduced from 12 mm to 10 mm.…”

Section: Spike Device With Worm Gear Unitmentioning

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

Cited by 4 publications

References 37 publications

Fatigue Analysis of Spike Segment of Special Tractor Wheels in Terms of Design Improvement for Chernozem Soil

Fatigue Analysis of Spike Segment of Special Tractor Wheels in Terms of Design Improvement for Chernozem Soil

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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