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RISS 인기검색어
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- 저자 : 소영웅 ( Young Woong Song ) (검색결과 1 건)
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목차 : 외륜 수레 손잡이 설계 변수의 변화에 따른 밀기, 들기, 회전 힘 평가
소영웅 ( Young Woong Song ),김경아 ( Kyoung Ah Kim ),이호철 ( Ho Cheol Lee ) 한국안전학회(구-한국산업안전학회) 2012 한국안전학회지 Vol.27 No.2
This study evaluated three forces (lifting, pushing and twisting) required to maneuver the single-wheel barrows according to handle height, width, horizontal angle and vertical angle, The four independent variables were varied in two levels. Handle height was varies in two levels: ``knuckle height (KH)`` and ``KH + 0.1 x stature``. The two handle widths were ``1.5 x shoulder width (SW)`` and ``1.75 x SW". Two angles of 0° and 15° were used for horizontal and vertical angles, The 24 factorial design was used in the experiment Twelve healthy male students (undergraduate and graduate) participated in the experiment Subjects exerted three forces (pushing, lifting, and twisting clockwise) in each experimental condition. The order of 16 treatment conditions was determined randomly. Re- stilts showed that the effects of the four factors were different according to three forces. While lifting and twisting forces were higher in ``knuckle height``, the pushing force was higher in ``KH + 0.1 x stature`` (p <0.05). Lifting and pushing forces showed higher values in the horizontal angle 0° than in 15°. Handle width and vertical angle showed no statistically significant main effects on three forces (p> 0.05). Results of this study could be used as basic data for the ergonomic design of handle variables of one- or two-wheel barrows.
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