• Proceedings of the KAIS Fall Conference
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• 2004.11a
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• pp.59-62
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• 2004

본 논문은 엘리베이터의 미끄럼이나 과속을 방지할 수 있는 보조 제동장치인 로프 브레이크에 관한 것으로 제동시 반력의 최대 영역 즉, 취약 부분(weak point)으로 예상되어지는 하우징 영역의 보강형상을 위치와 높이를 변화시켜서 구조해석을 수행하여 최대응력과 최대변형률을 비교 분석하여 하우징의 안전성을 검토한 후, 최적형상의 하우징을 적용시킨 로프 브레이크의 설치 각도에 따른 구조해석을 수행하여 구조적 타당성을 검토하고자 한다.

• Proceedings of the KAIS Fall Conference
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• 2004.11a
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• pp.63-65
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• 2004

본 논문은 엘리베이터의 승객보호를 배가하는 안전장치에 관한 것으로 3차원 유한요소해석 코드인 ANSYS를 활용한 구조해석 결과를 설계의 기초 데이터로 사용하였으며, 기존의 제품과 다른 방식을 도입하여 승객과 설비를 보호할 수 있는 설계방법을 제시하고 설계방법에 준한 제작을 통해 안전한 설계를 도모하였다.

• Proceedings of the KAIS Fall Conference
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• 2006.11a
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• pp.83-86
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• 2006

본 논문에서는 수직형 스프링식 로프 브레이크에 관한 것으로 3차원 유한요소해석 코드인 ANSYS를 활용한 구조해석 결과를 기초 데이터로 사용하였으며, 내부응력, 경계조건, 하중등이 고려되었다. 또한 24인승 엘리베이터에 장착되는 로프 브레이크를 대상으로 해석하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.7
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• pp.1623-1629
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• 2015

By increasing due to large-scale residential and commercial apartments or factories or were, and increases the length of the cable is connected from the electrical room, the thickness of the cable, the trend is also being gradually thicker to increase the power consumption. In this paper, the programs install the cable inserted in the rope a double bonded brake pipe to be laid underground in these cables, and to reliably collect various kinds of data such as a tension at the time of laying the cable, the distance and speed design, and the sample data was acquired through hardware making them. Through this, it was confirmed that, worker was significantly reduced and work time was shortened to the traditional mechanical laying equipment. And to obtain a performance of improving the reliability of operation, because the use of the working data to the management and evaluation.

• Journal of Navigation and Port Research
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• v.34 no.10
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• pp.775-780
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• 2010

In the machinery, the brake system is as important part as machine's working. The situation of emergency stop, the machine doesn't stopped would be occur big accident. This is common things for all of machinery, also for the ships. There are two kind of mooring devices are existed on the ship. One of them, the windlass winch, is used to anchor. The other, the mooring winch is used to moor the ship in pier use the rope tied to bitt on dock. In case of previously been used mooring winch made of a steel plate, and the bolt which was connect brake band and lining broken. In this study, prevent an accident find the position of stress concentration by finite element analysis program. And removed stress concentration. And search the optimum position of the separation angle to be more efficient.

• Fire Science and Engineering
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• v.29 no.3
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• pp.59-64
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• 2015

This study analyzed results of the causes of failure in 1,022 fire trucks currently being used in South Korea (aerial ladder, aerial platform, pumper, and chemical fire trucks). The results show that 46% of aerial ladder trucks have defective in the elevator brake systems, 29% of aerial platform trucks have contamination in the hydraulic oil, 37% of pumpers have defective in the pneumatic cylinders of the air supply system, and 39% of chemical fire trucks have defective in the powder fire extinguishing systems. The principal reasons for malfunctions are deterioration of the apparatuses, and accumulated fatigue from repetitive use of certain components, such as pneumatic cylinders in the air supply system and wire rope jamming in rollers in the ladder apparatus. These manufacturing defects should be improved upon in the manufacturing process. As a result, the fire trucks, which are used for 5 years or more, need precise inspections in accordance with the Regulation on Fire Apparatus Maintenance. Fire apparatuses have a service life of 10 to 12 years or more. They need to be replaced or require life extension, and they should be kept in top shape with the best maintenance for public safety.