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서명국(M. K. Seo),유영철(Y. C. Yoo),이호연(H. Y. Lee),조용근(Y. G. Cho) 유공압건설기계학회 2016 유공압건설기계학회 학술대회논문집 Vol.2016 No.6
An accumulator is used in oil hydraulic system of construction machinery to save energy and reduce a vibration and shock. The use of the accumulator has recently increasing, but the reliability evaluation criteria differs from country to country. So, it is difficult to ensure the reliability whether their performance meet domestic environment and situation. In this study, we introduce the reliability evaluation criteria of the accumulator for construction machinery. Among several type of accumulators, we deal with the diaphragm type accumulator of a small capacity. In order to specify the evaluation criteria of the diaphragm type accumulator, we analyzed the functional requirements of the accumulator and checked the main failure mode of the components. Then, we analyzed KS standards and international standards (ISO, JIS, MIL, and SAE). As a results, we enacted a total of 11 type reliability tests including 4 type comprehensive performance tests, 4 type environmental resistance tests, 2 type stability tests, and a life test.
건설기계 유압용 다이어프램형 축압기의 신뢰성 평가 시험항목 및 시험장치에 관한 연구
서명국(Myoungkook Seo),유영철(Yungchul Yoo),이호연(Hoyeon Lee),조용근(Yonggeun Cho) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5
A diaphragm type accumulator is used in oil hydraulic system for construction machinery. Its needs are increasing by the interest in energy saving and the need for a vibration and shock resistant in hydraulic system. However, the reliability evaluation criteria of the accumulator vary from country to country and region. So, it is difficult to ensure the reliability of products to meet domestic situation. In this study, we introduce the reliability criteria of a diaphragm type accumulator for construction machinery. To do this, we analyzed the functional requirements of the accumulator and the main failure mode of the components. We refereed to KS standards and international standards (ISO, JIS, MIL, and SAE). As a result, we enacted a total of 11 type reliability tests including 4 type comprehensive performance tests, 4 type environmental resistance tests, 2 type stability tests, and a life test.