Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Development of dynamics simulation model for 3-point hitch of agricultural tractor during plow tillage

  • Mo A Son (Department of Agricultural Machinery Engineering, Chungnam National University) ;
  • Seung Yun Baek (Department of Smart Agriculture System, Chungnam National University) ;
  • Seung Min Baek (Department of Smart Agriculture System, Chungnam National University) ;
  • Hyeon Ho Jeon (Department of Smart Agriculture System, Chungnam National University) ;
  • Ryu Gap Lim (Innovalley Substantiation Team, KOAT) ;
  • Yong Joo Kim (Department of Agricultural Machinery Engineering, Chungnam National University)
  • Received : 2022.10.12
  • Accepted : 2022.11.21
  • Published : 2022.12.01
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Abstract

Agricultural operations are performed in uneven environments by attaching an implement on the 3-point hitch of a tractor. A high load is thus placed on the 3-point hitch, and fatigue and failure of the hitch may occur during agricultural operations. In this study, a dynamic simulation model was developed to predict the load occurring on the eyebolt of a 3-point hitch, which is the main damaged component. The simulation model was developed and validated using agricultural data as simulation input and validation data. The dynamics model was developed using the specifications of a 78 kW class tractor. A measurement system was constructed to measure the simulation input and validation data. The simulation model was validated using a traction load on an eye bolt, which was measured during plow tillage operation. The measurement results showed that the average traction load on the left and right lower link and the top link were 8,099.97, 4,943.06, and 636.11 N, respectively. The simulation results and the measured traction load on the left eyebolt were respectively 610.30 and 597.15 N. The simulation results and measured traction load on the left eyebolt were respectively 1,179.78, and 1,145.06 N. The error between the simulation and measurement data was roughly 2% on the left eyebolt and 3% on the right eyebolt.

Keywords

Acknowledgement

본 결과물은 농림축산식품부의 재원으로 농림식품기술기획평가원의 첨단생산기술개발사업(321065-2) 및 기술사업화지원사업(821014-03)의 지원을 받아 연구되었음.

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