Citation

Chen C, Xu S, Jiang Y, Yang X, Xiong G. China Saf. Sci. J. 2022; 32(8): 201-207.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.08.1308

PMID

unavailable

Abstract

In order to improve accuracy of workload assessment and prevent WMSDs caused by fatigue of replenishment operation workers, a multi-factor-modified workload evaluation method based on energy consumption model was proposed. The replenishment operation was divided into handling operation cycle, opening box activity and restocking shelves operation cycle, and an energy consumption model suitable for replenishment was built. Then, with energy consumption and working time as main measurement indexes, oxygen consumption, working posture and ergonomics index of lower back were introduced as correction factors, and a workload assessment model was established. Finally, the model＇s effectiveness and accuracy were verified through the case of Jack digital human simulation. The results show that compared with workload evaluation that only considers energy consumption and operation time, the proposed one is closer to actual situation, and is more helpful to prevent WMSDs in replenishment operation as multi-ergonomic factors can correct assessment results. Moreover, energy consumption and workload are significantly affected by quantity of replenishment and shelving. © PHYSOR 2022 China Safety Science Journal. All rights reserved.

Language: zh