Multi-freedom intelligent pneumatic power muscle based on shape memory alloy deformation net

A memory alloy and pneumatic muscle technology, applied in the field of pneumatic muscle technology and shape memory alloy materials, can solve the problems of high cost, complex pneumatic muscle mechanism, large volume, etc., and achieve the effect of increasing the degree of freedom and improving the driving characteristics

Inactive Publication Date: 2008-07-16
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining multiple pneumatic muscles to achieve complex driving actions will lead to complex pneumatic muscle mechanisms, large volume, and the need to adjust the air pressure of multiple cavities, resulting in high cost

Method used

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  • Multi-freedom intelligent pneumatic power muscle based on shape memory alloy deformation net

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Experimental program
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with drawings and embodiments.

[0021] The pneumatic muscle driver of the present invention includes: a rubber elastic inner tube, an actively deformable deformable net attached to the outer wall of the inner tube, an air inlet and outlet for air supply to the trachea, and sealing clips at the front and rear ends for precisely connecting the trachea and the deformable net together hoops, as well as wiring ports, air pipes, electrical leads, etc. The specific technology lies in:

[0022] A. Using the principle that the deformation of the rubber inner tube is constrained by the external deformable mesh that can be actively deformed, the aerodynamic muscle driving characteristics and the deformation direction can be adjusted. The deformation net adopts a special structure, which is composed of a shape memory alloy wire braided net and a deformation guiding alloy spring, wherein the deformation guiding a...

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Abstract

The invention discloses a multi-degree-of-freedom intelligent pneumatic muscle based on shape memory alloy deforming net. A bending guide allay coil spring, a rotary steering allay coil spring and a deforming net formed by a shape memory allay mesh grid are sequentially, tightly and axially arranged outside an elastic rubber tube, both ends of which are sealed by an external catch hoop and an inner element. When the rubber inner tube is expanded by air pressure, on the basis of passive deformation of the deforming net, active deformation is added to restrain the deformation of pneumatic muscle, thereby realizing the characteristics of adjustability and multi-degree-of-freedom. Pulse current is adopted to heat the shape memory alloy intelligent material to have active deformation. The bending guide, rotary steering shape memory alloy springs are adopted to realize the bending and rotation of the pneumatic muscle. The positive effects of the invention lies in improving the drive characteristic of the pneumatic muscle, increasing the freedom degree of the pneumatic muscle and being applicable to the fields in need of high precision, flexibility and complex drive. The pneumatic muscle of the invention can directly connect load or connect load through a drive mechanism.

Description

technical field [0001] The invention relates to aerodynamic muscle technology and shape memory alloy materials, specifically, the use of shape memory alloys to make actively deformable deformation nets with special structures. Background technique [0002] Pneumatic muscles were first proposed by Russian inventor S.Garasiev in the 1930s. American doctor Mckibben invented a working pneumatic muscle in the 1950s. In the 1980s, Japanese engineers developed the Rubbertuator pneumatic muscle based on the Mckibben pneumatic muscle. British engineers developed the Air Muscle pneumatic muscle based on the Mckibben pneumatic muscle. Pneumatic muscle is a revolution in pneumatic technology, and it is also an important development direction of intelligent drives. The pneumatic muscle is mainly composed of an inflatable elastic hose and an external load-bearing component that constrains the expansion and deformation of the elastic tube. The stress is generated due to the deformation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/00A61F2/68B25J11/00B25J18/00B25J19/00
Inventor 王斌锐
Owner CHINA JILIANG UNIV
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