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신진군,양유정,전언섭,이근부 청주대학교 산업과학연구소 2000 産業科學硏究 Vol.18 No.1
An improved shovel design to minimize physical discomfort and the risk of cumulative trauma disorder at shoveling tasks is proposed in this study. Firstly, Korean standard data (KSB 7354, shovels and scoop) was used to check if they satisfy the anthropometric specification of Korean poulation in 1992. Secondly, for the discomfort shoveling tasks analysis, the mothods such as "Body Map" pictograph, self-conscious checklist, Ovako Working Posture are applied to field survey. Thirty one male and sixteen female subjects whose age are ranging from 18 to 65 voluntarily participed in the experiment. According to the results, the new shovel contributes to improving subjective comfort level(more than 40 degree) and reducing low back muscle fatigue. Through the research, we redesign the shovels and optimize the shoveling tasks in order to minimize the serious discomforts on workers back and shoulders.