Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Gear Rating and Contact Pattern Analysis for Rotavator Gearbox Using Actual Working Load

실 작업 부하를 이용한 로타베이터 기어박스의 강도 평가와 치면 접촉 패턴 해석

  • 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)
  • 김정길 (한국생산기술연구원 지능형농기계연구그룹) ;
  • 조승제 (한국생산기술연구원 지능형농기계연구그룹) ;
  • 이동근 (한국생산기술연구원 지능형농기계연구그룹) ;
  • 오주영 (한국생산기술연구원 안전시스템연구그룹) ;
  • 신민석 (한국생산기술연구원 안전시스템연구그룹) ;
  • 박영준 (서울대학교 바이오시스템공학과)
  • Received : 2021.04.21
  • Accepted : 2021.04.27
  • Published : 2021.06.30
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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

Acknowledgement

이 논문은 2021년도 한국생산기술연구원의 '자율 농작업을 위한 트랙터용 자동변속기 국산화 기술 개발' 사업의 지원을 받아 연구되었음. No. KITECH JA-210009

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