Variable topology folding and unfolding mechanism with cranks and sliders connected through flexible hinges of folding and unfolding units

Abstract

The invention discloses a variable topology folding and unfolding mechanism with cranks and sliders connected through flexible hinges of folding and unfolding units. An upper layer and a lower layer of a rotating machine base of the variable topology folding and unfolding mechanism separately correspond to four hinge seats, one ends of support rods are connected with the hinge seats through hinges, and both sides of the support rods are connected with crank-slider mechanisms through the hinges; one ends of drive rods are connected with the support rods through the hinges, and the other ends ofthe drive rods are connected with driven rods through the hinges; one ends of the driven rods are connected with the drive rods through the hinges, and the other ends of the driven rods are connectedwith second sliding blocks through the hinges; one ends of the driven rods of the last group of the crank-slider mechanisms are connected with the drive rods through the hinges, and the other ends are connected with first sliding blocks through the hinges; the first sliding blocks are connected with the driven rods of the last group of the crank-slider mechanisms through the hinges; one ends of the second sliding blocks are connected with the driven rods through the hinges, and the other ends are connected with the drive rods of the latter one of the crank-slider mechanisms; and both ends ofthe flexible hinges are connected with two unfolding modules. The variable topology folding and unfolding mechanism with cranks and sliders connected through the flexible hinges of the folding and unfolding units is suitable for the aerospace engineering of the space folding and unfolding arm, the large-diameter folding and unfolding antenna, and the space station basic skeleton.

Description

technical field [0001] The invention relates to a folding mechanism, in particular to a variable topology folding mechanism in which a crank slider is connected with a flexible hinge of a folding unit. Background technique [0002] With the development of aerospace technology, many scholars at home and abroad have researched and discussed the folding mechanism. Professor Deng Zongquan of Harbin Institute of Technology divided the folding mechanism into four categories according to the way of unfolding and folding: relying on the elastic deformation of the material, and the hinged structure. , Solid surface expansion mode, inflation expansion mode. This patent is an invention mainly aimed at the hinged frame type deployment method. [0003] Chinese patent 201410538119.4 discloses a spherical antenna support mechanism. The foldable unit of the invention is complicated, and the folding process is complicated. The triangular planar array expandable mechanism, the patent can on...

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Problems solved by technology

[0003] Chinese patent 201410538119.4 discloses a spherical antenna support mechanism. The foldable unit of the invention is complicated, and the folding process is complicated. The triangular planar array expandable mechanism, the patent can only be folded on the plane, and the folding ratio is small; Chinese patent 201410055564.5 discloses a space expandable mechanism, the expandable unit of the patent is 10 rods and 10 pairs of mechanisms, and the degree of freedom of mechanism redundancy is relatively small large, poor stability

[0004] At present, there is no invention and design of a folding mechanism with simple structure, simple folding process, space folding, large folding ratio, high stability and high reliability.

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