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8인치급 다운더홀(DTH) 해머의 모델링 및 설계인자에 따른 영향도 분석
이충노(Chung No Lee),홍기창(Ki Chang Hong),임종혁(Jong Hyuk Lim),나인선(In Seon Na),황운규(Un Kyu Hwang),정헌술(Heon Sul Jeong) 유공압건설기계학회 2016 유공압건설기계학회 학술대회논문집 Vol.2016 No.11
Rock drill equipment which top hammer, down-the-hole hammer and rotary drill is used as a representative in accordance with the strike and drive type of the drill. in this paper, Due to the characteristics of underground drilling of work conditions it is difficult to obtain the experimental data. So modeling and Analyzing the down-the-hole hammer through simulation software AMESim and Among the design parameters using the design of experiment selected for the factors affecting the Strike energy and BPM and analyzed influence by each design factors.
황운규(Un Kyoo Hwang),임종혁(Jong Hyuk Lim) 대한기계학회 2016 大韓機械學會論文集A Vol.40 No.6
광물시장 성장과 함께, 고효율 DTH 해머 필요성이 함께 증가되고 있다. 그러나 DTH 해머는 지하 천공이라는 작동조건의 특성 때문에, 실험 데이터의 직접 취득이 어렵고, 실제 테스트를 하기 위해서는 DTH 드릴 리그와 많은 운용비를 필요로 한다. 본 연구에서는 이러한 DTH 해머의 제품개발 시간과 비용의 문제점을 컴퓨터 시뮬레이션을 이용하여 해결하고자 하였다. 이전 연구에서DTH 해머구조와 동작 원리를 분석하고, 시뮬레이션을 이용한 표준 모델을 제시하고, 그것을 실험과 비교 검증하였다. 이를 바탕으로 본 논문에서는 실험설계법을 이용하여DTH 해머의 타격에너지와 효율에 관한 제어인자를 도출하고, 이에 관한 최적화를 시도하였다. 그 결과 타격에너지를 14.9% 효율은 3.3% 높이는 결과를 얻었다. Research and development of mineral-resource-related products has progressed with the increased need to develop mineral resources. The DTH hammer is a resultant product. However, owing to particular work conditions of underground drilling, it is difficult to obtain direct data on the DTH hammer. A DTH drill rig requires a significant amount of money and time for actual testing. This thesis aimed to resolve this problem by using CAE. In a previous paper, the structure of the DTH hammer and its movement were analyzed, and a standard model based on simulation was proposed. Then, experimentation and comparison verification were conducted. In this paper, by using an experimental design method, we derived a control factor of the impact force and efficiency of the DTH hammer and attempted to optimize the design. As a result, the impact energy increased by 14.9%, and the efficiency increased by 3.3%.
황운규(U. K. Hwang) 유공압건설기계학회 2015 드라이브·컨트롤 Vol.12 No.2
Research and development of mineral resource related products has progressed with the increased need to develop mineral resources. The DTH hammer is one a resultant product. However, due to particular work conditions of underground drilling, it is difficult to obtain direct data on the DTH Hammer. A DTH drill rig requires a lot of money and time for actual testing. This thesis aimed to resolve this problem by using CAE. First, the structure of the DTH hammer and the movement was analyzed. Next, a standard model based on simulation was proposed and then experimentation and comparison verification was conducted. In addition, the verified models were applied to products of various sizes, and the models used in simulation were compared by conducting field tests.