摘要
为提高工作负荷评估的准确性,预防补货作业人员因疲劳引发的职业性肌肉骨骼损伤(WMSDs),提出一种基于能量消耗模型的多因子修正工作负荷评估方法。将补货作业分解为搬运作业循环、开箱活动和上货作业循环,构建适用于补货作业的能量消耗模型;以能量消耗和作业时间为主衡量指标,引入耗氧量、作业姿势和下背部受力等工效学指标为修正因子,建立补货作业负荷评估模型;结合Jack数字人仿真进行评估,验证该模型的有效性和准确性。结果表明:相比于仅考虑能量消耗和作业时间的工作负荷评估,多工效学因素能够对评估结果起到修正作用,更加接近实际情况,有助于预防补货作业过程中的WMSDs;不同补货上架商品数量对能量消耗和工作负荷具有显著影响。
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.
作者
陈昌华
许帅帅
蒋玉香
杨小杰
熊光辉
CHEN Changhua;XU Shuaishuai;JIANG Yuxiang;YANG Xiaojie;XIONG Guanghui(School of Management,Xihua University,Chengdu Sichuan 610039,China;Institute of International Economics and Management,Xihua University,Chengdu Sichuan 610039,China;School of Emergency Management,Xihua University,Chengdu Sichuan 610039,China;Yibin Cuiping District Emergency Management Bureau,Yibin Sichuan 644000,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2022年第8期201-207,共7页
China Safety Science Journal
基金
四川省科技计划项目(2022YFS0515,2017GZ0358,2017GZ0187)
西华大学国际经济与管理研究院研究生创新基金资助(2021001)。