高處垂直式繩索拉卸物作業之人因研究

Ergonomic Study of a Vertical Rope-Pulling/Lowering Task from Scaffolding

10.6848/JWL.201707_5(1).0002

吳水丕(Swei-Pi Wu)；楊健炘(Jian-Xin Yang)

人工物料搬運 ； 高處垂直式繩索拉/卸物作業 ； 最大可承受拉/卸物重量 ； manual materials handling ； vertical rope-pulling/lowering tasks from a scaffold ； maximum acceptable weight of rope-pulling/lowering

工作與休閒學刊

5卷1期（2017 / 07 / 01）

19 - 29

繁體中文

本研究旨在針對高處垂直式繩索拉卸物之人工物料搬運問題進行一套之人因研究，本研究共徵募12位男性受試者，以心物法來收集和檢定工作型態(拉與卸)、頻率(五分鐘一次與一次最大)、對稱性(對稱與非對稱)與手腕姿勢(虎口向下與虎口向下)對於最大可承受拉物重量、心搏率，以及RPE等之效應。結果發現手腕姿勢、工作型態、頻率、對稱性等四項因子對於最大可承受拉卸物重量均有顯著效應，其中，卸物重量(24.8 KG)比拉物重量(21.0 KG)大18%；一次最大(25.7 KG)比五分鐘一次(20.1 KG)大28%；對稱作業(23.4 KG)比非對稱作業(22.4 KG)大5%。整體而言，以較低頻率、以及對稱作業，對於人們從事高處垂直式繩索拉卸物是較為有利的。

This ergonomic study investigates manual materials handling issues concerning vertical rope-pulling / lowering tasks from scaffolding. A total of 12 male participants were recruited to determine the maximum acceptable weight effects on pulling and lowering (MAWpl), heart rate and rating of perceived exertion on task styles, frequency, wrist position and symmetry. The results showed that task styles, wrist position and symmetry significantly affected MAWpl. The maximum acceptable lowering weight (24.8kg) was significantly larger than the maximum acceptable pulling weight (21.0kg) for 18%. The MAW for one time maximum (25.7kg) was significantly larger than the MAW for one time per 5 minutes (20.1kg) for 28%. The MAW of symmetry (23.4kg) was also significantly larger than the MAW of asymmetry (22.4kg) for 5%. In general, lower frequency and symmetric conditions are beneficial for users in implementing rope-pulling / lowering tasks from scaffolding.

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