Rigid hinge connecting variable-topology folding and unfolding mechanism with crank block as folding and unfolding unit

Abstract

The invention relates to a rigid hinge connecting variable-topology folding and unfolding mechanism with a crank block as a folding and unfolding unit. The rigid hinge connecting variable-topology folding and unfolding mechanism comprises unfoldable modules and a rigid hinge, each unfoldable module comprises a rotating machine base, a stretchable arm and a crank block mechanism, the upper and lower layers of the rotating machine bases correspond to four hinge bases, one ends of the stretchable arms are connected with the hinge bases through hinges, and the two sides of the stretchable arms areconnected with the crank block mechanism through hinges; each crank block mechanism comprises a driving rod, a transmission rod and a sliding block, wherein the driving rod, the transmission rod andthe sliding block are connected through a rotation pair, and the sliding block is embedded on the stretchable arm; and the rigid hinge is used for connecting the two unfoldable modules, and the two unfoldable modules can rotate relatively through a middle rotation pair of the rigid hinge. The rigid hinge connecting variable-topology folding and unfolding mechanism has the beneficial effects that repeated folding is achieved, the folding ratio is large, the folding process is simple, the driving manner is simple, the rigidity is large, the stability is high, and the reliability is good.

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 rigid hinge of a folding unit. Background technique [0002] With the development of the aerospace industry, the folding mechanism has important application prospects in space communication, manned spaceflight, earth observation, deep space exploration, etc., and has become one of the research hotspots in the field of aerospace. However, due to the limited space of the spacecraft, the large folding ratio of the deployable mechanism is prompted. At present, many scholars from Harbin Institute of Technology, Beijing Institute of Technology, Zhejiang University and Beihang University are designing and developing the deployable mechanism. Research. [0003] Chinese patent 201610556701.2 discloses a folding mechanism for multi-board deployable antennas of spacecraft. This patent belongs to a planar folding antenna...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent 201610556701.2 discloses a folding mechanism for multi-board deployable antennas of spacecraft. This patent belongs to a planar folding antenna mechanism, which is folded only once and has a small folding ratio; Chinese patent 201210072572.1 discloses a scissors-based quadrilateral The unit planar array expandable mechanism, the patent folding process is complicated, the mechanism is prone to interference between the rods during the unfolding process, and the predetermined structural form cannot be achieved; Chinese patent 201210310520.3 discloses a square unit planar array based expandable Mechanism, the type of rod required by this patent is complex, and it can only be folded in a plane, and the folding ratio is small

[0004] At present, there is no invention and design of a folding mechanism that can be folded multiple times, has a large folding ratio, a simple folding process, a simple structure, a simple driving method, high rigidity, high stability, and good reliability.

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