Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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A Study on the Shock Characteristics in the Hydraulic Power Shifting System of the Hydraulic Travel Motor

유압주행모터의 변속시 발생하는 충격특성에 관한 연구

  • Lee, Joo-Seong (Dept. of Mechanical Engineering, Chungbuk National University) ;
  • Lee, Kye-Bock (Faculty, school of Mechanical Engineering, Chungbuk National University)
  • 이주성 (충북대학교 대학원 기계공학과) ;
  • 이계복 (충북대학교 기계공학부)
  • Received : 2001.05.03
  • Accepted : 2001.08.22
  • Published : 2001.08.31
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Abstract

Hydraulic power shifting systems of hydraulic travel motor may be far safer than mechanical power transmission systems. Thus, hydraulic power shifting systems are widely used for speed control on the hydraulic equipments. In the case of liquid shifting lines, the rapid change of area, such as valve closing, can result in a large pressure transient. It is necessary to assure proper control method in order to obtain the smallest shift shock. This study conducts the shock characteristics of hydraulic power shifting system of the hydraulic travel motor. Experimental results show that shock pressure depends on the operating pressure, flow rate and pipe line area. The shock characteristics can be applied for reducing shocks.

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