Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Evaluation of PTO Severeness for 78 kW-Class Tractor According to Disk Plow Tillage and Rotary Tillage

디스크플라우 및 로타리 작업에 따른 78 kW급 트랙터 PTO 가혹도 평가

  • Kim, Wan Soo (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Kim, Yong Joo (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Park, Seong Un (Research and Development Institute, Tongyang Moolsan Co. Ltd.) ;
  • Hong, Soon Jung (Department of General Education, Korea National College of Agriculture and Fisheries) ;
  • Kim, Yeon Soo (Department of Biosystems Machinery Engineering, Chungnam National University)
  • Received : 2019.10.10
  • Accepted : 2019.11.06
  • Published : 2019.12.01
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Abstract

The purpose of this study was to evaluate the PTO severeness for an agricultural tractor during disk plow and rotary tillage. The PTO load measurement system was constructed with data acquisition and a PTO torquemeter. Field experiments were conducted at a combination of traveling speed (L3 Low, L3 High) and PTO speed (P1, P2). The load spectrum was generated using the rain-flow counting method, and the SWT method was used to consider the range and mean of the PTO load. The damage sum was calculated by applying a modified miner rule, which is a cumulative damage law. The relative severeness was expressed as the ratio of the lowest damage sum. Relative severeness was higher with the lower PTO gear stage, and higher driving gear stage and it was approximately 40-102 times higher for rotary tillage than disk plow tillage in the same gear stages. The relative severeness was 1010.12 in the rotary tillage under L3 High P1 based on the disk plow tillage under L3 Low P2.

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