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Case Study for Pitting of Elevator's Worm Gear Type Traction Machine

승강기용 웜기어 방식 권상기의 점식 발생 사례

  • Seo, Sang-Yoon (Korea Elevator Safety Technology Institute) ;
  • Choi, Byeong-Keun (The Dept. of Energy and Mech. Eng., Inst. of Marine Industry, GyeongSang National Univ.) ;
  • Yang, Bo-Suk (The Dept. of Mech. and Automotive Eng., Pukyong National University) ;
  • Lee, Seon-Sun (Korea Elevator Safety Technology Institute) ;
  • Kim, Sung-Hyeob (Korea Elevator Safety Technology Institute)
  • Received : 2012.06.12
  • Accepted : 2012.10.18
  • Published : 2012.11.20

Abstract

This paper analyzes the pitting's cause of elevator's worm gear type traction machine. To find a cause of pitting problem, we analyzed vibration, a proper design allowance and lubrication. We brought a conclusion that the cause of pitting is not a simple vibration problem, such as misalignment of worm reducer and rail, but mostly related to a designed allowance. In this case, the allowance is tight. In general, the allowance of traction machine and lubrication is varied by manufacturers. When the allowance is tight, a proper lubrication can diminish the pitting problem.

Keywords

References

  1. Lee, K. J., 2011, The Experimental Study on the Analysis of Load Capability for Worm Gear Teeth of Traction Machine, Master's thesis, Inha University.
  2. Yang, B. S., 2006, Condition Monitoring & Diagnostics, Intervision, pp. 318-325.
  3. Korea Elevator Society, 1999, Elevator Design.
  4. Sam-Il Precision Ind. co., Ltd. home page, http://www.e-samil.co.kr
  5. Shell homepage, http://www.shell.co.kr