Development of Assist Suit for Squat Lifting Support Considering Gait and Quantitative Evaluation by Three-Dimensional Motion Analysis
Development of Assist Suit for Squat Lifting Support Considering Gait and Quantitative Evaluation by Three-Dimensional Motion Analysis
复制标题
考虑步态和三维运动分析定量评价的深蹲举重辅助服的开发
DOI：
10.20965/jrm.2020.p0209
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Taro Nakamura
中科院分区：
文献类型：
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作者：
Masashi Kashima;Hirokazu Arakawa;Seigo Kimura;Rie Nishihama;Kazuya Yokoyama;Isao Kikutani;Taro Nakamura
在全球范围内，腰痛是一个严重的问题。对于工人来说，它不仅会导致健康问题，还会产生社会和经济影响。腰痛可能是由于人们在处理重物时腰部承受的负担造成的。日本厚生劳动省推荐蹲举，这是一种对腰部负担较小的举起物体的方法。另一方面，深蹲举重并不常用，因为它需要深度弯曲膝盖来举起物体，导致工作量较大。因此，为了辅助深蹲举重，开发了板簧式腿部助力服。然而，如果增强先前机器的固定性能，板簧可能会阻碍步态运动期间膝关节的弯曲。在本研究中，我们开发了一种使用滑动机构的腿部动力辅助服。选择板簧以满足通过提升物体的运动分析确定的目标辅助扭矩。此外，我们还制作了带有滑动机构的原型机。使用原型机进行举重动作时大腿肌肉的肌电图测量显示，肌肉减少了高达 46%。还证实，带有滑动机构的机器比没有滑动机构的机器能够实现更自然的步态。
Globally, lower back pain is a serious problem. For workers, it not only causes health problems but also has social and economic influences. Lower back pain could be attributed to burden on people’s waists when they handle heavy objects. Ministry of Health, Labour and Welfare in Japan recommends squat lifting, a method of lifting objects with a smaller burden on waist. On the other hand, squat lifting is not commonly used because it requires deep bending of knees to lift an object, leading to a larger work load. Therefore, a leaf-spring type power assist suit for legs has been developed in order to assist squat lifting. However, if the fixing performance of a preceding machine was enhanced, a leaf spring could impede the bending of knee joints during gait motion. In the present study, we developed a power assist suit for legs using a slide mechanism. A leaf spring was chosen so as to meet a target assist torque determined by a motion analysis for lifting objects. In addition, we made a prototype machine with slide mechanism. EMG measurement of the thigh muscle during lifting actions using the prototype machine showed a decrease of up to 46%. It was also confirmed that a machine with slide mechanism could realize a more natural gait than a machine without it.