Deformation-controllable bionic joint based on friction effect, and preparation method and application of deformation-controllable bionic joint

Abstract

The invention belongs to the structural bionics related technology field, and discloses a deformation-controllable bionic joint based on a friction effect, and a preparation method and application ofthe deformation-controllable bionic joint. The bionic joint comprises at least one group of temperature rise segments, deformation segments and cooling segments, wherein the temperature rise segments,the deformation segments and the cooling segments are in through connection in sequence; the material of each deformation segment is shape memory alloy; the inner wall of each temperature rise segment is made of thermal insulation materials; the material of each cooling segment is a heat conduction material; and when a fluid flows through each temperature rise segment, due to a friction effect, the temperature rises to the deformation temperature of each deformation segment to enable each deformation segment to deform when the fluid flows through each deformation segment, and the fluid whichflows out of each deformation segment is subjected to heat dissipation and cooling through each cooling segment. By use of the deformation-controllable bionic joint disclosed by the invention, a deformation requirement of multiple deformation segments in a bionic structure is realized, and the bionic structure can be actively controlled.

Description

technical field [0001] The invention belongs to the technical field related to structural bionics, and more specifically relates to a bionic joint with controllable deformation based on friction effect and its preparation method and application. Background technique [0002] Most of the existing bionic joints are designed with hardware structures such as bearings, springs, and connecting rods. The structures are complex, and most of them need to be used in conjunction with external control equipment, which has poor compatibility with human body structures. Even in the field of clinical medicine, although there are bionic structures compatible with the human body such as artificial bones, various types of intracavitary stents, thrombus filters, embolizers, etc., such structures are generally relatively simple, such as artificial bones, which can only bionic single Segmental bones cannot be bionically connected to multiple bones that can be bent, and most bionic structures are...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing bionic joints are designed with hardware structures such as bearings, springs, and connecting rods. The structures are complex, and most of them need to be used in conjunction with external control equipment, which is poorly compatible with human body structures.

Even in the field of clinical medicine, although there are bionic structures compatible with the human body such as artificial bones, various types of intracavitary stents, thrombus filters, embolizers, etc., such structures are generally relatively simple, such as artificial bones, which can only bionic single Segmental bones cannot be bionically connected to multiple bones that can be bent, and most bionic structures are deformed by receiving external stimuli. Therefore, certain environmental conditions need to be set outside the bionic structure, which greatly limits the application range and development of bionic structures. It is an internal heating stimulus, and it can only stimulate deformation at a single point and cannot achieve multi-segment fixed-point deformation. The existing design cannot meet the requirements of multi-segment deformation, especially in the field of bionic joints. For example, bionic fingers are often multi-joint structures and require internal active control. Therefore, based on the above problems, it is urgent to design a bionic joint that can actively control multi-segment deformation from the inside

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