Single-degree-of-freedom paraboloid type foldable and unfoldable array

Abstract

The invention relates to a single-degree-of-freedom paraboloid type foldable and unfoldable array, which is designed on the basis of a rigid thick plate paper-cut theory. The array comprises a rigid thick plate and a spring driving hinge; the rigid thick plate is provided with a special molded surface, and the spring driving hinge is arranged at the crease of a basic folding and unfolding unit; the surface appearance and the side face of the rigid thick plate are treated in a material adding and cutting mode so as to meet the self-locking and profile requirements. According to the single-degree-of-freedom paraboloid type foldable and unfoldable array, the array is driven to be freely folded and unfolded by means of the elastic force of the spring, is folded into a small size in a non-working state and is unfolded to a preset working position in a working state, and the single-degree-of-freedom paraboloid type foldable and unfoldable array has the advantages of single degree of freedom,stable structure, large folding and unfolding ratio, high profile precision and the like.

Description

technical field [0001] The invention relates to the field of spatially expandable mechanisms, in particular to a single-degree-of-freedom paraboloid-type expandable array. Background technique [0002] The folding mechanism is a mechanism that can change its geometric shape according to actual needs. The space foldable mechanism is a new type of aerospace mechanism born with the rapid development of aerospace technology in the late 1960s. It uses aerospace materials with high strength, high rigidity, high geometric stability, and ultra-low thermal expansion coefficient, including low Motion auxiliary mechanism, drive element, etc. The expandable mechanism is in a folded and folded state during launch, and is fixedly placed in the payload compartment of the vehicle with the smallest volume. After being launched into orbit, the ground command and control center controls its gradual and stable deployment according to the predetermined design requirements, becoming a large-sca...

AI Technical Summary

Problems solved by technology

[0004]The purpose of the present invention is to solve the problems of the existing foldable arrays with small fold ratio, incapable of self-expanding and low accuracy of unfolded surface. , the present invention designs a single-degree-of-freedom parabolic foldable array based on the rigid thick plate kirigami folding method, which is composed of several rigid thick plate units and a corresponding number of spring-driven hinges, and the spring-driven hinges are used to make the foldable array unfold Free folding and unfolding, using material removal and material addition to improve the reliability of the unfolding process and the stability of the unfolding state, ensuring high matching accuracy with the target paraboloid when reaching the predetermined working position

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