Passive carrying exoskeleton based on variable stiffness gravity compensator and use method thereof

The passive transport exoskeleton using a variable stiffness gravity compensator, utilizing a cam structure and a spring-lever variable stiffness mechanism, solves the problem that existing devices cannot adapt to individual differences and gait characteristics, achieving efficient energy recovery and precise assistance, and reducing muscle fatigue and joint load.

CN122125659APending Publication Date: 2026-06-02HEFEI UNIV OF TECH
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Patent Information

Application Number
CN202610289048.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-11
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing passive hip-assist exoskeleton devices cannot adapt to the individual differences of different users, have poor energy recovery, insufficient assist accuracy, and poor gait adaptability, leading to problems such as muscle fatigue and excessive joint load.

Method used

The passive transport exoskeleton based on variable stiffness gravity compensator uses a cam structure to match the biomechanics of the human hip joint, combined with a spring-lever variable stiffness mechanism and ratchet pawl clutch to achieve precise energy recovery and release, adapting to different body types and gait characteristics, and reducing muscle load.

Benefits of technology

It improves the accuracy of energy recovery, reduces the risk of muscle strain, enhances the efficiency and safety of handling operations, adapts to diverse user needs, and reduces energy waste and muscle burden.

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Abstract

The invention discloses a passive carrying exoskeleton based on a variable stiffness gravity compensator and a using method thereof.The passive carrying exoskeleton comprises a strap assembly, a hip fixing assembly, a back connecting rod assembly and a thigh execution assembly, and the bottom end of the back connecting rod assembly is fixedly connected with an energy recovery power assisting device located on the side of the hip fixing assembly; the energy recovery power assisting device comprises a bending power assisting device fixedly connected to the back connecting rod assembly, a walking power assisting device in transmission connection with the top end of the thigh execution assembly, a clutch device coaxially arranged on a power transmission shaft of the walking power assisting device in a sleeving mode, and a pulley block device in transmission connection with the bending power assisting device. And the Bowden rope device is connected with the clutch devices on the two sides. The device does not need external energy supply, realizes energy storage, energy release and negative power recovery and reuse by means of a mechanical structure, can accurately adapt to the gait of the human body, is matched with a reasonable power assisting opportunity, effectively assists the hip joint movement, and reduces the joint load and the physical energy consumption of the human body.
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