航空装配抗振外骨骼减振性能试验研究

Experimental study on vibration reduction performance of aerial assembly anti-vibration exoskeleton

为评估抗振外骨骼降低航空装配动力工具振动的能力,模拟航空装配铆接工艺,设计抗振外骨骼减振性能试验,提出利用穿戴和未穿戴抗振外骨骼状态下,铆接期和铆接间期不同姿势压强信号的均值及姿势权重综合评估外骨骼减振性能的加权平均法。结果表明:抗振外骨骼降低了试验人员1所受59.9%的铆枪振动和50.4%的铆枪冲击手掌压强,及试验人员2所受49.5%的铆枪振动和36.9%的铆枪冲击手掌压强;减振性能与穿戴外骨骼铆接间期压强在0.01水平上显著负相关,而与未穿戴外骨骼铆接间期压强、铆接操作姿势不存在相关性;抗振外骨骼能够降低50%以上的铆枪振动,对于铆接装配工人手臂有重要的保护作用。

In order to evaluate anti-vibration exoskeleton's ability to reduce vibration of aerial assembly power tools,aviation assembly riveting process was simulated and riveting test of its vibration reduction performance was designed.Then a weighted average method was proposed to comprehensively evaluate its performance with mean value of pressure signals and weight coefficient of different postures during riveting period and riveting interval under conditions of wearing or not wearing exoskeleton.The results show that anti-vibration exoskeleton reduces 59.9%of riveting vibration and 50.4%of palm pressure when impacted by riveter for tester 1,and 49.5%and 36.9%respectively for tester 2.Its reduction performance is negatively related with pressure of riveting interval while wearing exoskeleton at 0.01,and it has no correlation with that in case of not wearing exoskeleton and riveting operating posture.It is also found that exoskeleton can reduce vibration of riveter by more than 50%and has an important protective effect on arms of assembly workers.