An instrumentation system to measure the loads acting on the tractor PTO bearing during rotary tillage |
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| Institution: | 1. College of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Burdwan, West Bengal 713101, India;2. Department of Agricultural and Food Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India;3. Department of Farm Machinery and Power Engineering, College of Agricultural Engineering and Technology, CCS Haryana Agricultural University, Hisar, Haryana 125004, India;1. Kharkiv Petro Vasylenko National Technical University of Agriculture, Kharkiv, Ukraine;2. South Ural State Agrarian University, Troitsk, Russia;3. South Ural State University (National Research University), Chelyabinsk, Russia;4. PRO FERRUM Limited Liability Company, St. Petersburg, Russia;5. Belgorod State Agricultural University, Mayskiy, Belgorod Region, Russia;6. Saint Petersburg State Forest Technical University named after S.M. Kirov, St. Petersburg, Russia;7. Novosibirsk State Agrarian University, Novosibirsk, Russia;8. Siberian Federal Scientific Center of Agro-BioTechnologes of the Russian Academy of Sciences, Krasnoobsk, Novosibirsk Region, Russia;9. Kurgan State Agricultural Academy by T S Maltsev, Village Lesnikovo, Ketovsky District, Kurgan Region, Russia;1. Mendel University in Brno, Department of Engineering and Automobile Transport, Zemědělská 1, 613 00 Brno, Czech Republic;2. ZETOR TRACTORS a.s., Trnkova 111, 628 00 Brno, Czech Republic;1. College of Agricultural Engineering, Madakasira 515302, India;2. Agricultural and Food Engineering Department, IIT Kharagpur, 721302, India;3. Central Potato Research Station, Jalandhar, 144003, India;1. Engineering for Sustainable Agriculture, Barbara Hardy Institute, School of Engineering, University of South Australia, SA 5095, Australia;2. Bangladesh Agricultural Research Institute (BARI), Gazipur 1701, Bangladesh |
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| Abstract: | Application of rotary tillage has been increased due to less tillage passes required, reduced draft, and greater efficiency through reduction in wheel slippage. Early failure of the bearing of tractor power take-off (PTO) shaft was observed in tractors of power range 30–35 horsepower during rotary tillage. An instrumentation setup involving an extended octagonal ring transducer (EORT) was developed and installed at the bottom of the bearing to measure the axial load and the vertical component of the radial load. The horizontal component of radial load was measured by strain gauges. Based on measured loads, the bearing life was assessed. Independent variables were: operating depth, number of blades, gear setting, engine speed, and tyre size. The average axial and radial loads varied from 786–3869 N, and 134–430 N, respectively. However, bearing experienced very high peak loads during each trial. The peak axial and radial loads was recorded between 1081–7534 N and 566–1794 N, respectively. The estimated bearing life based on peak loads was 171.98–28341.39 h. Based on the findings, it may be concluded that the average loads were not sufficient to cause quick failure of PTO bearing, rather sudden peak loads might be the root cause of early failure. |
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| Keywords: | Extended octagonal ring transducer PTO (power take-off) Axial load Radial load Bearing life |
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