Abstract
Purpose
Overturning and high vibration levels are major causes of agricultural farm fatalities and mechanical troubles during operation. This study assessed the stability angles of a self-propelled 1-row Chinese cabbage harvester and measured the vibration levels for safety under different conditions.
Methods
The stability of the Chinese cabbage harvester was investigated using computational methods, and the vibration levels were measured on off-road and field conditions. The three-dimensional model of the Chinese cabbage harvester was designed and simulated to evaluate the static stability angles employing commercial software. The relationship between vehicle and deformable soil was calculated using the empirical models. The critical angles and the climbing ability of the developed harvester were examined under loaded and unloaded conditions. The vibration exposures were measured on the cabbage conveyor and the power transmission part in static, off-road, and field operation conditions under various speeds and slopes.
Results
The stability simulation results showed the minimum lateral stability angles of the harvester were pointed on the loaded condition compared to the unloaded condition. The maximum sideways overturning angle of the Chinese cabbage harvester was recorded as 32° at 150° ground angle and 30° at 270° ground angle, from the moving directions clockwise, for unloaded and loaded conditions. The high levels of vibration were measured at 0.19, 1.64, and 1.38 m/s2 for static, off-road, and field conditions at high speeds among X-, Y-, and Z-axis directions, respectively. Besides, the considerable vector sum (Av) exposures were calculated 1.54, 2.14, and 2.48 m/s2 at 0.3, 0.6, and 0.9 m/s forward speeds on the cabbage conveyor part.
Conclusion
The concept and guidelines of this research could help to protect operators from safety risks and expose vibration characteristics during farm operations of the self-propelled Chinese cabbage harvester prototype.
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Acknowledgments
This work was supported by the Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through Advanced Production Technology Development Program funded by Ministry of Agriculture, Food and Rural Affairs (MAFRA) (Project No. 316018-03-2-HD020), Republic of Korea.
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Ali, M., Lee, YS., Chowdhury, M. et al. Analysis of Driving Stability and Vibration of a 20-kW Self-Propelled 1-Row Chinese Cabbage Harvester. J. Biosyst. Eng. 46, 48–59 (2021). https://doi.org/10.1007/s42853-021-00087-w
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DOI: https://doi.org/10.1007/s42853-021-00087-w