[논문]A Study on an Analysis and Design of the Internal Structure of Heumgyeonggak-nu

Kim, Sang Hyuk; Yun, Yong-Hyun; Ham, Seon Young; Mihn, Byeong-Hee; Ki, Ho-Chul; Yoon, Myung-Kyoon

doi:10.5140/jass.2017.34.2.171

Abstract ▼ AI-Helper

In this study, the internal structure of a Heumgyeonggak-nu (欽敬閣漏) was designed, and the power transmission mechanism was analyzed. Heumgyeonggak-nu is an automated water clock from the Joseon Dynasty that was installed within Heumgyeonggak (欽敬閣), and it was manufactured in the $20^{th}$ ...

In this study, the internal structure of a Heumgyeonggak-nu (欽敬閣漏) was designed, and the power transmission mechanism was analyzed. Heumgyeonggak-nu is an automated water clock from the Joseon Dynasty that was installed within Heumgyeonggak (欽敬閣), and it was manufactured in the $20^{th}$ year of the reign of King Sejong (1438). As descriptions of Heumgyeonggak-nu in ancient literature have mostly focused on its external shape, the study of its internal mechanism has been difficult. A detailed analysis of the literature record on Heumgyeonggak-nu (e.g., The Annals of the Joseon Dynasty) indicates that Heumgyeonggak-nu had a three-stage water clock, included a waterfall or tilting vessel (欹器) using the overflowed water, and displayed the time using a ball. In this study, the Cheonhyeong apparatus, water wheel, scoop, and various mechanism wheels were designed so that 16 fixed-type scoops could operate at a constant speed for the water wheel with a diameter of 100 cm. As the scoop can contain 1.25 l of water and the water wheel rotates 61 times a day, a total of 1,220 l of water is required. Also, the power gear wheel was designed as a 366-tooth gear, which supported the operation of the time signal gear wheel. To implement the movement of stars on the celestial sphere, the rotation ratio of the celestial gear wheel to the diurnal motion gear ring was set to 366:365. In addition, to operate the sun movement apparatus on the ecliptic, a gear device was installed on the South Pole axis. It is expected that the results of this study can be used for the manufacture and restoration of the operation model of Heumgyeonggak-nu.

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참고문헌 (12)

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원문보기 상세보기
Kim SH, Lee YS, Lee MS, Ham SY, A study on the internal structure of Heumgyeonggaknu, J. Astron. Space Sci. 30, 113-121 (2013). https://doi.org/10.5140/JASS.2013.30.2.113

원문보기 상세보기
Kim SH, Ham SY, Lee YS, Model design for water wheel control system of Heumgyeonggaknu, J. Astron. Space Sci. 33, 55-62 (2016). https://doi.org/10.5140/JASS.2016.33.1.55

원문보기 상세보기
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Mihn BH, Lee MS, Choi G, Lee KW, Manufacturers of astronomical instruments invented during the Ganui-dae project in Joseon Dynasty, Publ. Korean Astron. Soc. 31, 77-85 (2016). https://doi.org/10.5303/PKAS.2016.31.3.077

원문보기 상세보기
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