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http://dx.doi.org/10.14775/ksmpe.2021.20.06.092

Gear Rating and Contact Pattern Analysis for Rotavator Gearbox Using Actual Working Load  

Kim, Jeong-Gil (Smart Agricultural Machinery R&D Group, Korea Institute of Industrial Technology)
Cho, Seung-Je (Smart Agricultural Machinery R&D Group, Korea Institute of Industrial Technology)
Lee, Dong-Keun (Smart Agricultural Machinery R&D Group, Korea Institute of Industrial Technology)
Oh, Joo-Young (Safety System R&D Group, Korea Institute of Industrial Technology)
Shin, Min-Seok (Safety System R&D Group, Korea Institute of Industrial Technology)
Park, Young-Jun (Department of Biosystems Engineering, Seoul National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.6, 2021 , pp. 92-99 More about this Journal
Abstract
The rotavator is attached to the three-point hitch at the rear of a tractor and uses the power take-off strength of the tractor to perform soil harrowing. During operation, the power transmitted to the gearbox of the rotavator varies with the soil characteristics and depth. These properties influence the reliability of the gearbox. In this study, actual load measurements and analyses were performed using a rotavator. In addition, the safety factor and fatigue life of the gearbox components were determined using the analysis results. Through analysis and tests, the contact pattern of the gear tooth surface was identified. The input power values of the gearbox were minimum and maximum at 54.5% and 84.5% of the tractor power, respectively. Based on the actual load analysis results, the strength and fatigue life of the gearbox components were satisfied. In addition, through the analysis and testing of the gear contact pattern, it was confirmed that a similar contact occurred. Through the analysis, the magnitude of the load acting on the tooth surface of the gear was confirmed.
Keywords
Rotavator; Actual Load; Tooth Contact;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Han, S. G., Shin, Y. I., Yoon, C. H. and Song, C. K., "Strength and Durability Analysis of the Double Planetary Gears," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 13, No. 5, pp. 28~34, 2014.   DOI
2 Lee, J. G., Kim, S. H., Han, S. G., Shin, Y. I. and Song, C. K., "Design of a Reducer Gear for Small Electric Vehicles," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 19, No. 9, pp. 116~121, 2020.   DOI
3 Kim, J. G., Park, J. S., Choi, K. J., Lee, D. K., Shin, M. S., Oh, J. Y. and Nam, J. S., "Analysis of Agricultural Tractor Transmission using Actual Farm Work Load," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 19, No. 11, pp. 42~48, 2020.
4 International Organization for Standardization (ISO), "Cylindrical gears-ISO system of accuracy," ISO 1328, 1995.
5 Kim, J. H., Kim, K. U., Choi, C. W. and Wu, Y. G., "Severeness of Transmission Loads of Agricultural Tractors," Journal of Biosystems Engineering, Vol. 23, No. 5, pp. 417~426, 1998.
6 International Organization for Standardization (ISO), "Calculation of load capacity of bevel gears," ISO 10300, 2001.
7 International Organization for Standardization (ISO), "Calculation of load capacity of spur and helical gears," ISO 6336, 2007.
8 International Organization for Standardization (ISO), "Rolling bearings-Dynamic load ratings and rating life," ISO 281, 2007.
9 German Institute for Standardization(DIN), "Shafts and axles, calculation of load capacity," DIN 743, 2012.
10 Baek, S. M., Kim, T. B., Choi, C. H. and Kim, Y. J., "Development of simulation model for compound planetary gear of hydraulic mechanical transmission," Proceedings of KSME Autumn Conference, pp. 43~44, 2019.
11 Kim, J. G., Kim, Y. J., Kim, J. H., Shin, B. S. and Nam, J. S. "Consumed-power and load characteristics of a tillage operation in an upland field in Republic of Korea," Journal of Biosystems Engineering, Vol. 43, No. 2, pp. 83-93, 2018.   DOI
12 International Organization for Standardization (ISO), "Bevel gears-ISO system of accuracy," ISO 1328, 1995.
13 Kim, W. S., Kim, Y. S., Kim, T. J., Park, S. U., Choi, Y., Choi, I. S., Kim, Y. K. and Kim, Y. J., "Analysis of Power Requirement of 78 kW Class Agricultural Tractor According to the Major Field Operation," Transactions of the Korean Society of Mechanical Engineers - A, Vol. 43, No. 12, pp. 911~922, 2019.   DOI
14 Kim, Y. J., Chung, S. O., Park, S. J. and Choi, C. H., "Analysis of Power Requirement of Agricultural Tractor by Major Field Operation," Journal of Biosystems Engineering, Vol. 36, No. 2, pp. 79~88, 2011.   DOI
15 Kim, T. J., Lim, R. G., Choi C. H. and Kim, Y. J., "Analysis of the Driving Gear Strength according to Plowing Operation of 50kW-class Tractor," Proceedings of KSME Autumn Conference, pp. 33~34, 2019.