Planar array expanding mechanism based on square units

Abstract

The invention discloses a planar array expanding mechanism based on square units. The planar array expanding mechanism comprises a plurality of square units which are connected and combined transversely and vertically with one another through a cross-shaped layered connecting rod, a cross-shaped orthogonal connecting rod, an upper layered connecting rod, a right layered connecting rod and a left layered connecting rod, wherein a square unit mechanism is connected with one ends of four T-shaped rods by taking the cross-shaped layered connecting rod as a center; and the four T-shaped rods are connected with a right-angle connecting rod and a layered right-angle connecting rod. According to the planar array expanding mechanism, the square unit mechanism is composed of few types of parts and has a simple structure; the planar array expanding mechanism is stable in an expanding process, is subjected to small impact, strong in repeatability, simple to prepare and machine and easy to assemble and has small errors; and the whole mechanism only has one degree of freedom and is driven by a mini-type motor, so that the driving is simple and the mechanism is easy to control. The planar array expanding mechanism based on the square units disclosed by the invention is particularly suitable for the field of large-area expansion and retraction of a satellite antenna expanding system and also can be applied to other fields of handiworks, building materials and the like.

Description

technical field [0001] The invention belongs to the field of structural design, and relates to a unit plane expansion and contraction mechanism, in particular to a square unit plane array-based expandable mechanism. Background technique [0002] With the development of space technology and information technology, space-borne deployable antennas are widely used in geostationary orbit communication and navigation satellites, space exploration satellites, electronic reconnaissance satellites and other types of satellites. Developed countries are competing to develop this technology. With the development of aerospace technologies such as mobile communications, geodesy and space exploration in China, it is urgent to research and develop space antennas with large shrinkage ratios to improve their transmission bandwidth, signal gain and simplify ground receiving devices. However, due to the limitation of the rocket's effective carrying space and carrying capacity, the antenna is re...

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Problems solved by technology

[0003] In order to avoid the shortcomings of the existing technology and overcome the problems of complex system structure, low deployment accuracy, large error accumulation and high manufacturing cost, the present invention proposes a square unit planar array deployable mechanism, which has a stable unfolding process and small impact , only one degree of freedom front and back, easy to control; simple preparation process, high reliability

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