Negative-pressure-driven pneumatic artificial muscle and preparation method thereof

Abstract

The invention discloses a negative-pressure-driven pneumatic artificial muscle and a preparation method thereof. The pneumatic artificial muscle comprises a pneumatic muscle body, and the pneumatic muscle body comprises an internal framework, an external coating membrane and sealing devices. The internal framework is of a deformation structure which is prepared from an elastic material and can be compressed and rebound in the axial direction, the two ends of the internal framework are provided with end rods, the external coating membrane wraps the periphery of the internal framework, and the sealing devices are arranged on the end rods of the internal framework and used for sealing the ends of the external coating membrane and the internal framework to form a leakproof structure. The pneumatic muscle body is driven by negative pressure, and when the negative pressure value in the pneumatic muscle body is changed, the contraction length of the pneumatic muscle body can be controlled. The negative-pressure-driven pneumatic artificial muscle has the advantages of being high in safety, small in size, small in mass, large in contraction range, easy to manufacture, low in cost and the like, and can be widely applied to various small and medium-sized mechanical devices.

Description

technical field [0001] The invention belongs to the field of fluid-driven flexible actuators, and in particular relates to a pneumatic artificial muscle driven by negative pressure and a preparation method thereof. Background technique [0002] Commonly used pneumatic artificial muscles are driven by externally supplied compressed air for push-pull action. The action process is like the movement of human muscles. Pneumatic artificial muscles can provide greater force, and at the same time, the weight of pneumatic artificial muscles is very small. Pneumatic artificial muscles will automatically brake when the push-pull force reaches the limit, and will not break through the predetermined range, and multiple pneumatic artificial muscles can be combined in any direction and at any position without neat arrangement. Pneumatic artificial muscles are mainly used for the drive of robot joints and various types of mechanical equipment. [0003] However, the existing pneumatic artif...

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Problems solved by technology

[0004]Aiming at the problem of complex structure of existing pneumatic artificial muscles, the present invention proposes a negative pressure driven pneumatic artificial muscle and its preparation method, which simplifies the difficulty of making pneumatic artificial muscles , improve the performance of pneumatic artificial muscles, reduce the quality and volume of peripherals of pneumatic artificial muscles, and save the production cost of pneumatic artificial muscles

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