Expandable combined unit and large-space expandable mechanism with same

Abstract

The invention relates to an expandable combined unit and a large-space expandable mechanism with the same. The expandable combined unit comprises a central bottom disc (1), periphery bottom discs (2),top discs (3), first web rods (5), second web rods (6) and synchronous folding rods (4). The various periphery bottom discs (2) are connected with the central bottom disc (1) by the corresponding synchronous folding rods (4) and are connected with the top discs (3) by the first web rods (5), every two adjacent periphery bottom discs (2) are connected with each other by the corresponding synchronous folding rod (4), and the top discs (3) are connected with one another by the corresponding synchronous folding rods (4) in pairs and are connected with the central bottom disc (1) by the second webrods (6). The expandable combined unit and the large-space expandable mechanism have the advantages that the expandable combined unit and the large-space expandable mechanism have large folding ratios, perfect closure structures can be obtained by the aid of movement of the large-space expandable mechanism, expansion movement is high in reliability, the expandable combined unit is expansible, andthe like.

Description

technical field [0001] The invention relates to an expandable combination unit and a large space curved surface expandable mechanism derived from the expandable combination unit. Background technique [0002] With the rapid development of the aerospace industry, major aerospace science and technology projects such as communication satellite platforms, planetary exploration programs, and electronic reconnaissance that are being implemented in aerospace engineering have increasingly high requirements for spacecraft. Large-caliber, light-weight, and high-precision space deployable mechanisms It has become an important development trend in the aerospace field. In order to perform different space missions, the size of the space mechanism required is getting larger and larger, but due to the space limitation of the spacecraft vehicle, the space mechanism must be completely synchronized and folded in the fairing during the launch phase, and the space mechanism must be fully synchro...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art. The present invention discloses an expandable combined unit and a large-scale space expandable mechanism composed of it. It has the advantages of folding configuration and high reliability of unfolding movement, and the unit is expandable; multiple units can be combined to form a curved surface deployable space antenna mechanism, which solves the problem that the existing curved surface deployable antenna mechanism must rely on the elastic deformation of the rod and the hinge gap The problem of reaching the ideal folding end state and the resulting unreliable deployment movement provides a new type of support mechanism for large-scale frame-type deployable antennas, and can be extended to other deployable structural fields

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