JRM Vol.35 No.3 pp. 684-693
doi: 10.20965/jrm.2023.p0684


Support Effect and Simulation Evaluation of Lifting Motion Using Non-Wearing Type Power Assist Device

Masashi Yokota* and Masahiro Takaiwa**

*Faculty of Information Science and Engineering, Okayama University of Science
1-1 Ridaicho, Kita-ku, Okayama, Okayama 700-0005, Japan

**Graduate School of Technology, Industrial and Social Sciences, Tokushima University
2-1 Minamijosanjima, Tokushima 770-8506, Japan

January 26, 2023
May 8, 2023
June 20, 2023
power assist device, pneumatic drive, non-wearing type, lifting motion, human support

One of the serious problems that Japan has been facing is its growing aging society, which causes a shortage of young workers in the nursing field to support care recipients and in other industries that require heavy labor. Many workers in these workplaces experience back pain. To reduce the burden on the lower back, the squat method is generally recommended when workers lift heavy objects. Many assist devices have been developed to reduce the burden on the body; however, most wearing type devices have difficulty performing the squat method owing to their mechanical constraints. In a previous study, we developed a non-wearing type pneumatic power assist device that considers the squat method and evaluated its support effects during a simple lifting motion. In this study, we developed a passive type assist device and a previously developed active type device and quantitatively evaluated their effectiveness in lifting motions. In addition, we analyzed muscle activity using a musculoskeletal simulator.

Simulation of lifting motion

Simulation of lifting motion

Cite this article as:
M. Yokota and M. Takaiwa, “Support Effect and Simulation Evaluation of Lifting Motion Using Non-Wearing Type Power Assist Device,” J. Robot. Mechatron., Vol.35 No.3, pp. 684-693, 2023.
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Last updated on Jun. 19, 2024