重複性鎖螺絲作業肌肉骨骼危害風險之評估與探討

Risk Assessment and Investigation of Musculoskeletal Hazards in Repetitive Screwing Tasks

彭曉玲(Hsiao-Ling Peng)

指導教授 ： 陳協慶

國立臺北科技大學/管理學院/工業工程與管理系碩士班/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00179

摘要

本研究評估組裝作業使用彈簧平衡器懸吊手工具時，對上肢操作電動起子鎖螺絲的作業負荷改善程度，此外，在不同的作業條件組合下模擬鎖螺絲作業，探討使用HAL-TLV與OCRA index兩種人因危害評估工具之差異。實驗過程中使用Borg CR-10主觀量表與肌電圖、心電圖等客觀量化數據作為作業負荷之評估指標。實驗結果顯示受測者使用懸吊輔助工具前後，其Borg與心率並無明顯差異，但對尺側屈腕肌、二頭肌、三頭肌之EMG大小仍有顯著影響。使用HAL-TLV與OCRA index兩種人因上肢評估工具的評估結果有極高的線性關係，兩者對於主、客觀評估結果的預測能力良好，惟HAL-TLV對危害之判斷等級略低於OCRA index。

關鍵字

肌肉骨骼傷害 ； 鎖螺絲 ； OCRA index ； HAL-TLV

並列摘要

This study evaluates the effectiveness of a spring balancer use in reducing workload of screwing tasks using an electric screwdriver. In addition, this study simulates screwing tasks of different operation conditions to assess the corresponding objective and subjective physical workloads of each task and to compare the assessment outcome of upper-limb risks of musculoskeletal hazard by using HAL-TLV and OCRA index tool. Subjects EMG, ECG, and Borg CR-10 were measured as quantitative indices of workloads. The Experimental results showed no significant improvement in Borg and heart rate by using a spring balancer, but significant EMG effect was found in subjects wrist ulnar flexor, biceps, and triceps muscles. Experimental results show that risk indices of HAL-TLV and OCRA index are highly correlated. Both tools have good predictability on objective and subjective workloads. However, HAL-TLV tends to predict a lower hazard level than OCRA index does.

並列關鍵字

Musculoskeletal disorders ； Screwing ； OCRA index ； HAL-TLV

參考文獻

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