21톤급 휠 굴착기용 트랜스미션의 기어 트레인에 대한 강도 해석
Strength Analysis of Complex Gear Train for Transmission of21-Ton Grade Wheel Excavator
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초록
The power train of transmission for 21-ton grade wheel excavator makes use of a complex gear train composed of a planetary and helical gear system to drive the wheel excavator by transmitting power to the axle. The complex gear train with a shift mode is an important part of the transmission because of strength problems in an extreme environment. To calculate the specifications of the complex gear train and analyze the gear bending and compressive stresses of the complex gear train, this study analyzes gear bending and compressive stresses accurately for the optimal design of the complex gear train with respect to cost and reliability. In this article, the gear bending and compressive stresses of the complex gear train are calculated using the Lewes and Hertz equation. Evaluating the results with the data of the allowable bending and compressive stress from the stress and number of cycles curves of the gears verified the calculated specifications of the complex gear train. A computer structure analysis is performed with the 3D model of the planetary and helical gears to analyze the structure strength of the complex gear train. The results demonstrate that the durability and strength of the complex gear train are safe, because the safety factors of the bending and compressive stresses are more than 1.0.
Abstract
The power train of transmission for 21-ton grade wheel excavator makes use of a complex gear train composed of a planetary and helical gear system to drive the wheel excavator by transmitting power to the axle. The complex gear train with a shift mode is an important part of the transmission because of strength problems in an extreme environment. To calculate the specifications of the complex gear train and analyze the gear bending and compressive stresses of the complex gear train, this study analyzes gear bending and compressive stresses accurately for the optimal design of the complex gear train with respect to cost and reliability. In this article, the gear bending and compressive stresses of the complex gear train are calculated using the Lewes and Hertz equation. Evaluating the results with the data of the allowable bending and compressive stress from the stress and number of cycles curves of the gears verified the calculated specifications of the complex gear train. A computer structure analysis is performed with the 3D model of the planetary and helical gears to analyze the structure strength of the complex gear train. The results demonstrate that the durability and strength of the complex gear train are safe, because the safety factors of the bending and compressive stresses are more than 1.0.
참고문헌 (6)
- 남석주, "1.7톤급 소형 굴착기용 주행 감속기의 복합 유성기어류에대한 강도 평가", 한국트라이볼로지학회지, 38(1), pp.22~26 (2022), 한국트라이볼로지학회[DOI]
- 김광민, "풍력발전용 피치 드라이브 시스템의 복합 유성기어류에 대한 피로 강도해석", 한국트라이볼로지학회지, 37(2), pp.48~53 (2021), 한국트라이볼로지학회[DOI]
- Dudley, D.W, "The Handbook of Practical Gear Design", pp.1.27~3.112 (1984), Mcgraw-Hill
- Bae, M. H, "Automotive & Continuously Variable Transmission", pp.37~44 (2009), Sun-Hak publication
- Wilfred, Lewes, "Investigation of Strength of Gear Teeth", Proc. Eng. Club, pp.38~55 (1893)
- Bae, T. Y, "The Bending Stress Analysis of Planetary Gears of Two Speed Reducer for Rotator System with Hybrid Function of the Piling Construction Work", Journal of the Korean Society of Creative Engineers, 49, pp.25~23 (2016)