发现隐藏的力量:被动下肢外骨骼如何将等长牵拉能力提升到新高度

IF 2.5 2区 工程技术 Q2 ENGINEERING, INDUSTRIAL
Jangwhon Yoon
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引用次数: 0

摘要

可穿戴外骨骼旨在平衡体力劳动需求和个人能力。本研究使用不同高度的椅子型外骨骼(CEX)对不同方向的等距推举能力进行了评估。20 名男女参与者分别进行了向前、向后、向上和向侧的推举。使用 CEX 使后推力增加了 60%以上,侧推力减少了约 10%,但对前推力和上推力没有显著影响。在后推时,脚部的重量分布上升到 80%,而在前推时则下降到 20%,而在上推和侧推时,用两块力板测量的脚部和 CEX 之间的重量分布约为 5:5。尽管后推力增加,但应考虑到 CEX 后稳定性的下降。工人和外骨骼设计者应意识到推举能力增加与后部姿势稳定性降低之间的权衡。在采取适当的预防措施以降低跌倒风险的情况下,采用 CEX 对需要在较低位置拉动物体的工人尤其有益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Discovering hidden strengths: How a passive lower extremity exoskeleton boosts the isometric pulling capacity to new heights
Wearable exoskeletons aim to balance physical work demands and individual capacity. This study assessed isometric pushing capacities in various directions using a chair-type exoskeleton (CEX) at different heights. Twenty participants of both genders underwent forward, backward, upward and sideways pushing. Using CEX increased posterior pushing by over 60%, decreased lateral pushing about 10%, but had no significant effect on anterior or superior pushing capacities. The weight distribution on the feet rose to 80% in posterior pushing and dropped to 20% in anterior pushing, while weight distribution between the feet and CEX, measured with two force plates, was about 5:5 in superior and lateral pushing. Despite increased posterior pushing, decrease in posterior stability with CEX should be considered. Workers and exoskeleton designers should be aware of this trade-off between increased pushing capacity and reduced posterior postural stability. With proper precautions to mitigate the risk of falling, introducing CEX can be especially beneficial for the workers needing to pull objects at lower levels.
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来源期刊
International Journal of Industrial Ergonomics
International Journal of Industrial Ergonomics 工程技术-工程:工业
CiteScore
6.40
自引率
12.90%
发文量
110
审稿时长
56 days
期刊介绍: The journal publishes original contributions that add to our understanding of the role of humans in today systems and the interactions thereof with various system components. The journal typically covers the following areas: industrial and occupational ergonomics, design of systems, tools and equipment, human performance measurement and modeling, human productivity, humans in technologically complex systems, and safety. The focus of the articles includes basic theoretical advances, applications, case studies, new methodologies and procedures; and empirical studies.
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