基于凸轮的恒力悬架背包隔离动载荷的简单设计。

IF 3.9 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY
Haotian Ju, Zihang Guan, Junchen Liu, Yao Huang, Kerui Sun, Lele Li, Weimao Wang, Tianjiao Zheng, Quan Xiong, Jie Zhao, Yanhe Zhu
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引用次数: 0

摘要

普通背包长时间负重会造成肌肉疲劳和骨骼损伤。研究表明,悬挂式背包可以有效减少能量消耗;然而,现有的基于弹性绳的悬架背包难以适应不同的速度,而主动悬架背包由于集成了电机和电池而增加了显著的额外重量。提出了一种基于凸轮的恒力悬架背包(CCSB)。CCSB采用凸轮弹簧机构,悬架刚度接近零,以尽量减少由负载振荡产生的惯性力。搭建了机构恒力性能测试平台,最大误差小于1.96%。在不同的步行速度下进行负重实验。实验室测试结果表明,与OBs相比,CCSB使峰值加速度垂直力平均降低84.47%,使人体代谢成本平均降低10.58%。室外试验表明,CCSB可降低8.26%的交通消耗。CCSB的紧凑结构使其更适合商业化,并显示出实际应用的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cam-Based Simple Design of Constant-Force Suspension Backpack to Isolate Dynamic Load.

Prolonged load carriage with ordinary backpacks (OBs) can cause muscle fatigue and skeletal injuries. Research indicates that suspended backpacks can effectively reduce energy expenditure; however, existing elastic rope-based suspension backpacks struggle to adapt to different speeds, while active suspension backpacks gain significant additional weight due to the incorporated motors and batteries. This paper presents a novel cam-based constant-force suspension backpack (CCSB). The CCSB employs a cam-spring mechanism with near-zero suspension stiffness to minimize the inertial forces generated by load oscillations. A test platform was constructed to evaluate the constant-force performance of the mechanism, showing a maximum error of less than 1.96%. Load-carrying experiments were conducted at different walking speeds. Laboratory test results show that, compared with OBs, the CCSB reduces peak accelerative vertical force by an average of 84.47% and reduces human metabolic costs by 10.58%. Outdoor tests show that the CCSB can reduce transportation consumption by 8.26%. The CCSB's compact structure makes it more suitable for commercialization and demonstrates significant potential for practical applications.

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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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