Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Analysis of load data for developing a self-propelled underground crop harvester during potato harvesting

  • Min Jong Park (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Seung Min Baek (Department of Smart Agriculture Systems, Chungnam National University) ;
  • Seung Yun Baek (Department of Smart Agriculture Systems, Chungnam National University) ;
  • Hyeon Ho Jeon (Department of Smart Agriculture Systems, Chungnam National University) ;
  • Wan Soo, Kim (Department of Bio Industrial Machinery Engineering, Kyungpook National University) ;
  • Ryu Gap, Lim (Innovalley Substantiation Team, KOAT) ;
  • Yong Joo Kim (Department of Biosystems Machinery Engineering, Chungnam National University)
  • Received : 2022.10.12
  • Accepted : 2022.11.14
  • Published : 2022.12.01
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Abstract

The purpose of this study is to develop a self-propelled underground crop harvester and its performance was evaluated by measuring the load during actual potato harvesting operations. This study was conducted at a constant working speed of 1 km·h-1. A load measurement system was installed to measure the actual load and the required working power was analyzed. A hydraulic pressure sensor was also installed to measure the hydraulic pressure. The required hydraulic power was calculated using the hydraulic pressure and flow rate. The results showed that the engine speed, torque, and power during harvesting operation were in the range of 845 - 1,423 rpm, 95 - 228 Nm, and 9 - 31 kW, respectively. Traction power, excluding the hydraulic pump of the tractor and power take-off (PTO) output, was in the range of 9 - 28 kW, and it was confirmed that it occupies a ratio of 16.2 to 50% of the engine rated output. The engine can supply the minimum required traction power to move the vehicle. This means that the engine used in this study could be down-sized to be suitable for an underground crop harvester. In this study, the gear stages of the tractor were not considered. This research thus shows the possibility of developing a self-propelled underground crop harvester.

Keywords

Acknowledgement

본 논문은 농림축산식품부의 재원으로 농림식품기술기획평가원의 기술사업화지원사업(122033-2)과 첨단농기계산업화기술개발사업(321062-02)의 지원을 받아 연구되었음.

References

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