Fatigue safety resilience model of assembly line work and its application

doi:10.16265/j.cnki.issn1003-3033.2022.09.2056

Abstract

Abstract:

In order to improve the safety level of assembly line work and solve the fatigue hazard of workers in assembly line work, the influencing factors of fatigue were analyzed with fault tree analysis (FTA) method, and the fatigue safety resilience model of workers was constructed. The model consisted of three modules: management system, fatigue repair and man-machine system. The model runs continuously in four stages of resistance, recovery, learning and optimization. Based on the practical application of the model, the fatigue management redundancy system was constructed, and the approximate and accurate rest mechanism and the conveyor belt alarm system were proposed. The results show that the fatigue management redundancy system has the function of monitoring and feedback information, and can prevent the fatigue damage of the factory. The fatigue repair method can approximately or accurately determine the rest time, and can avoid fatigue in the same posture. Optimizing human-machine systems can improve human factors reliability and environment. The model can eliminate the hazards of long-term work in the same-position, reduce fatigue and effectively solve the fatigue risk of the factories.

Key words: assembly line work, fatigue safety resilience, fatigue hazard, fatigue repair, fatigue management redundancy system

LI Xin, YANG Fuqiang, HONG Yidu, DUAN Zaipeng. Fatigue safety resilience model of assembly line work and its application[J]. China Safety Science Journal, 2022, 32(9): 200-205.

Figures/Tables 5

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一级评估指标	二级评估指标	评估结果
人员因素	心理疲劳	作业人员感到枯燥、单调
	体力疲劳	工厂为站姿工作,作业人员小腿、手臂等部位酸痛
	休息机制	仅在下午工间休息20 min,工作人员无午休
	肌肉关节舒缓	发现部分员工小腿静脉曲张,无舒缓措施
机械因素	安全设计	传送带无警报系统,作业平台空间设计不合理
环境因素	环境舒适	工厂无色调变化,灯光条件偏暗,夏季较热
管理因素	安全管理	未建立系统的安全管理体系
	领导层面	领导规定每日完成量
	工厂制度	作业人员产品组装出错,罚款50元/个

休息时间点	定时休息	时间点	制度
9:00	10 min	9:10	姿势交替
11:00	10 min	11:10	姿势交替
12:00	2 h	12:00—14:00	午休
16:00	15 min	16:15	姿势交替