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최중섭(Jung-Seob Choe),전형규(Hyung-Gyu Jun) 한국산업융합학회 2009 한국산업융합학회 논문집 Vol.12 No.3
This paper describes traveling systems consisting of one major-wheel and three minor-wheels attached to each tip of three spokes. A link of inter-axle plays an important role of the system. It connects secondary axle to the major wheel axle. Its length is determined to ascend stably various stairs. The systems was designed to mount a cart for carrying agricultural products. The systems was applied to ascend stairs, travel on sand and cross a obstacle, despite of simple design.
이현준(Hyun June Lee),박은미(Eun Mi Park),신동창(Dong Chang Shin),최중섭(Jung Seob Choe),김태욱(Tae Wook Kim) (사)한국생물환경조절학회 2018 생물환경조절학회지 Vol.27 No.3
대부분의 소비자들이 질 좋은 음식을 선호하기 때문에, 농장에서는 소비자들의 욕구를 충족시키기 위해 다양한 시설을 이용하고 있다. 가장 대표적인 시설은 플라스틱 온실과 유리온실이다. 국내의 플라스틱 온실 과 유리 온실의 측고는 3m 내외이다. 결과적으로 작물의 생산성이 제한되고, 이를 해결하기 위해서는 기둥의 높이를 증가시켜 온실의 측고를 높이는 것이다. 온실 기둥상승 장치는 멈춤장치, 공압 실린더 및 수직 부재 등으로 구성된다. 공압 실린더는 안전계수 1.5를 고려하여 직경 160㎜와 행정길이 50㎜로 설계하였으며, 노즐을 통하여 공기의 압력을 제어하였다. 1행정 시간을 30초 내외로 설계하기 위해서는 21.5L·min-1 공기가 필요한 것으로 나타났다. 따라서 노즐의 직경은 0.5㎜로 설계하였다. 압력이 0.9 ㎫일 때 평균 인상력은 13,805N으로 계산된 값 15,612N에 근접하였다. 현장 시험결과 같은 열의 기둥과 오차가 발생하지 않았으며, 실제 유리 및 플라스틱 온실에 적용 가능한 것으로 판단되었다. As many consumers prefer good quality food, farms have used various facilities to cultivate products for satisfying their desires. Among them, the most representative facilities are plastic and glass multi-span greenhouse. The height of both plastic greenhouse and glass greenhouse is around three meters high in Korea. As a result, the crop productivity is limited. The solution is to increase the height of the greenhouses to improve the greenhouses’ environment. The device for raising columns consists of a stop device, a pneumatic cylinder, and a vertical member. Pneumatic cylinders were designed with a diameter of 160 ㎜ and a stroke length of 50 ㎜, taking into consideration the safety factor of 1.5. In addition, the air flow was controlled by nozzle to achieve a time of less than 30 seconds per stroke. It was calculated that 21.5L·min<SUP>-1</SUP> of air was needed to complete in less than 30 seconds. Accordingly, the diameter of the nozzle is designed to be 0.5 ㎜. When the pressure was 0.9 ㎫, the average raising force was 13,805N, which was close to the calculated value of 15,612N. The field test results show that any inconsistency in the row columns was not generated. and that it is considered applicable to the actual glass and plastic greenhouses.
Twist Wheel 방식 폐비닐수거기 개발에 관한 연구(Ⅰ)
하유신(Yu-Shin Ha),박규식(Kyu-Sik Park),김진현(Jin-Hyun Kim),최중섭(Jung-Seob Choe),손철민(Chul-Min Son),김태욱(Tae-Wook Kim) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.1
Mulching vinyl is used on field crops to reduce herbicides and this causes multiple effects. The mulching vinyl must be collected for the next crop season, but was left alone due to a shortage of labor. The used mulching vinyl that was left alone acted as one of the main sources of environmental pollution on farms. In order to solve these problems, a self-propelling vinyl remover was developed. The self-propelling vinyl remover consists of a travelling part and rotating of remover wheel. Each output device has a 1.5ps engine and a 2.5ps engine. The vinyl was twisted 17~47㎝/times length. The bobbin’s diameter was 160㎜ and it’s stable travelling speed was 0.5㎧. The revolution of the remover wheel bobbin was 60rpm to maintain the wheel’s linear velocity. As seen at performance test at the field which had 950㎜ ridge intervals and 10a area, the average working speed was 0.56㎧ and the turning time was 15seconds. Therefore, the working performance was 40.1min/10a.
Twist Wheel 방식 폐비닐수거기 개발에 관한 연구(Ⅱ)
하유신(Yu-Shin Ha),박규식(Kyu-Sik Park),김진현(Jin-Hyun Kim),최중섭(Jung-Seob Choe),손철민(Chul-Min Son),남상헌(Sang-Heon Nam),김태욱(Tae-Wook Kim) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.2
This study consist of two parts. One is development of a self-propelling vinyl remover which was already reported at the previous paper. This is the second part of the study. For the study, an attached vinyl remover was developed. It was consisted of connecting tractor to bucket, removing bucket from tractor, and the process was the tractor"s assistance hydraulics. In the case of an attached vinyl remover, the vinyl was twisted 0.5times per 30∼85cm length. The bobbin"s diameter was 190mm and it"s stable travelling speed was 1m/s. The revolution of the remover wheel was 90rpm to maintain the wheel"s linear velocity. As seen at performance test at the field which had 950mm ridge intervals and 10 a area, the average working speed was 1m/s and the turning time was 20seconds. Therefore, the working performance was 24.5min/10a. The efficiency of used vinyl remover was 97% and working conditions were good.
오유진 ( O Yu Jin ),이대남 ( Lee Dae Nam ),경영수 ( Gyeong Yeong Su ),윤선웅 ( Yun Seon Ung ),최중섭 ( Choe Jung Seob ),김계현 ( Kim Gye Hyeon ),이교원 ( Lee Gyo Won ),한종설 ( Han Jong Seol ),김성도 ( Kim Seong Do ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.12
The incidence of rectal endometriosis is relatively rare. We have experienced one case of rectal endometriosis. Endometriosis is defined as abnormal growth of endometrial tissue outside the uterus and it occurs in approximately 5 to 15% of women. Endometr