Hexagonal pyramid type folding and unfolding unit and folding and unfolding mechanism composed of same

Abstract

The invention provides a six-prismatic-table-shaped folding and unfolding unit and a folding and unfolding mechanism composed of the six-prismatic-table-shaped folding and unfolding unit, the six-prismatic-table-shaped folding and unfolding unit comprises six-prismatic-table-shaped folding and unfolding units, unit connecting rods and supporting frames, and 3N2 + 3N + 1 six-prismatic-table-shaped folding and unfolding units are combined into the tightly-connected folding and unfolding mechanism through the unit connecting rods and the supporting frames in an array mode. Each hexagonal prism table type folding and unfolding unit comprises a bottom disc chuck, a first connecting rod, a second connecting rod, a top disc chuck, a third connecting rod, a fourth connecting rod, a central disc chuck, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod and an eighth connecting rod, the top disc chuck is connected with the first end of the unit connecting rod, and the second end of the unit connecting rod is connected with the supporting frame; according to the invention, the six-prismatic-table-shaped folding and unfolding unit arrays are combined to form a folding and unfolding mechanism with any aperture size, and the folding and unfolding mechanism has the advantages of high rigidity, high folding rate, high supporting performance, adjustable aperture size and the like, so that the space folding and unfolding antenna mechanism is safer, more efficient and more convenient in the working process; the problems that a traditional antenna is weak in signal transmitting or receiving, small in data capacity and low in communication rate are solved.

Description

technical field [0001] The invention relates to the technical field of folding and unfolding antenna mechanisms, in particular to a hexagonal table folding and unfolding unit and a folding and unfolding mechanism composed thereof. Background technique [0002] With the development and promotion of technology, large spaceborne antennas are widely used in deep space exploration, mobile communications, national defense, and meteorological monitoring. The space foldable antenna is an antenna with deployment function that works in the space environment. Due to the limitation of the effective launch volume of the rocket, the antenna needs to be folded up during launch, and then deployed and put into working state after entering the orbit. Therefore, the demand for large diameter, high profile accuracy, high rigidity and high strength of the space foldable antenna is increasing day by day. [0003] The space antenna must be folded in the launch vehicle fairing in a folded and unfo...

AI Technical Summary

Problems solved by technology

[0004]At present, there are relatively few truss-type folding antenna mechanisms. In order to meet the growing demand for aviation deployable antennas, a hexagonal table-type folding unit and its It is very necessary to form a folding mechanism

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