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다물체 동역학 프로그램을 이용한 50 톤급 건설기계용 진동 리퍼의 링크 모듈 해석에 관한 연구
고영호(Y. H. Ko),강범준(B. J. Kang),양규상(G. S. Yang),박정열(J. Y. Park),정헌술(H. S. Jeong) 유공압건설기계학회 2019 유공압건설기계학회 학술대회논문집 Vol.2019 No.11
Virbo ripper is a construction equipment developed for rock cracking and ripping. It is different from the existing hydraulic breaker. In developing 50-ton vibro rippers, link modules are an important part of improving the vibration efficiency of gearboxes and ensuring durability against digging forces. This paper focuses on checking the stress distribution of the link module, which is the component of interest when the vibro ripper hits the rock, and predicting the weak spots and reflecting them in the component design. The dynamic behavior analysis of the vibro ripper was used to identify the structural weakness of the link module using Daful®, a multibody dynamics commercial program, and the fatigue life was estimated using the results obtained through the simulation.
오광근 ( K K Oh ),김재훈 ( J H Kim ),김연욱 ( Y W Kim ),박정렬 ( J Y Park ),양규상 ( G S Yang ),박종원 ( J W Park ),김성현 ( S H Kim ) 한국안전학회(구 한국산업안전학회) 2014 한국안전학회지 Vol.29 No.6
Vibro ripper worked by high frequency vibration is developed to do rock fragmentation and work of ripper is the different concept with other existing breakers. The gear box-shank welded joint of vibro ripper is very important part to deliver vibro motive force to tooth, so this part should endure high frequency vibration environments. The purposes of this study are to choose the optimal welding conditions for fatigue strength. The conditions were made using three kind of shank materials and two kind of filler metals. Shank materials are Hadox-hituf, Posten80 and AR400, and filler metals are CSF-71T and CSF-81T. The fatigue test was conducted each condition. Fracture surface was observed to estimate fracture characteristics of welded joint using SEM.