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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Experimental Study on the Drawbar Pull and Structural Safety of an Onion Harvester Attached to a Tractor

트랙터 부착형 양파수확기의 작업 속도에 따른 견인 부하와 구조 안정성에 관한 실험적 연구

  • Shin, Chang-Seop (Upland-field Machinery Research Center, Kyungpook National University) ;
  • Kim, Jun-Hee (Major in Bio-industrial Machinery Engineering, Kyungpook National University) ;
  • Ha, Yu-Shin (Upland-field Machinery Research Center, Kyungpook National University) ;
  • Park, Tusan (Upland-field Machinery Research Center, Kyungpook National University)
  • 신창섭 (경북대학교 밭농업기계개발연구센터) ;
  • 김준희 (경북대학교 농업토목.생물산업공학부) ;
  • 하유신 (경북대학교 밭농업기계개발연구센터) ;
  • 박두산 (경북대학교 밭농업기계개발연구센터)
  • Received : 2019.02.20
  • Accepted : 2019.03.19
  • Published : 2019.04.30
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Abstract

Recently, due to labor shortages in rural areas within South Korea, the demand for upland-field machinery is growing. In addition, there is a lack of development of systematic performance testing of upland-field machinery. Thus, this study examined structural safety and drawbar pull based on soil properties, as a first step for systematic performance testing on the test bed. First, the properties of soil samples from 10 spots within the experimental site were examined. Second, the strain was measured and converted into stress on 8 points of an onion harvester that are likely to fail. More specifically, the chosen parts are linked to the power, along with the drawbar pull, using a 6-component load cell equipped between the tractor and the onion harvester. The water content of the soil ranged between 5.7%-7.5%, and the strength between 250-1171 kPa. The test soil was subsequently classified into loam soil based on the size distribution ratio of the sieved soil. The onion harvester can be considered as structurally safe based on the derived safety factor and the drawbar pull of 115-1194 kgf, according to the working speed based on agricultural fieldwork.

Keywords

References

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