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Sun-flower-shaped annular truss deployable antenna mechanism based on shear elements

A scissor-type unit and ring truss technology, which is applied in the direction of folded antennas, etc., can solve the problems of the failure of deployment of the ring truss antenna, the decrease of structural rigidity, and the complex tension and lock, and achieves good assembly and manufacturing process, large overall folding, and simple structure. Effect

Active Publication Date: 2019-04-12
YANSHAN UNIV
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Problems solved by technology

[0005] On the whole, there are few types of deployable antenna mechanisms with ring truss currently in orbit, and with the increase of the antenna aperture, the overall structural rigidity drops more seriously. Some deployable ring truss antennas use tensioned zippers to achieve the overall stiffness of the antenna mechanism improvement, but the tensioning zipper is more complicated and difficult to control, which makes the deployment of the ring truss antenna fail

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  • Sun-flower-shaped annular truss deployable antenna mechanism based on shear elements
  • Sun-flower-shaped annular truss deployable antenna mechanism based on shear elements
  • Sun-flower-shaped annular truss deployable antenna mechanism based on shear elements

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments.

[0032] In describing the present invention, it is to be understood that the terms "radial", "axial", "upper", "lower", "top", "bottom", "inner", "outer" etc. indicate orientation Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , and the...

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Abstract

The invention discloses a sun-flower-shaped annular truss deployable antenna mechanism based on shear elements. The mechanism is in a sun flower shape in the whole, and includes four N-type shear elements. The shear element is composed of four internal node disks, four external node disks, two intermediate node disks, four connecting rods, four intermediate shear bars and four external shear barsconnected by rotating pairs. The shear elements are arranged into an array, and adjacent shear elements are connected by sharing two inner node disks, two outer node disks and two intermediate shear bars, and the plurality of shear element are arranged into an array to jointly form a sun-flower-shaped annular truss mechanism. As the overall mechanism of the invention has high structural symmetry,the annular truss-type space deployable mechanism with different dimensions can be formed by changing the number of the shear units and the length of the rods in the overall mechanism, and can be better applied to the large-aperture satellite antenna.

Description

technical field [0001] The invention relates to a deployable antenna mechanism, in particular to a deployable antenna mechanism based on a sunflower-shaped ring truss of a scissor unit. Background technique [0002] With the rapid development of aerospace technology and the increasing demand in the fields of communication, navigation, and remote sensing, the demand for large-aperture space antennas in aerospace engineering is also increasing. The application of space large-aperture antennas can greatly improve the level of earth observation resolution, satellite communication distance and data transmission capacity, space power generation capabilities, space reconnaissance and precision strike capabilities, etc., and its development has always been highly valued by countries all over the world. An important application of the large-scale space deployment mechanism in the aerospace field is as a deployment and support mechanism for large-aperture antennas. Currently, the larg...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08
CPCH01Q1/08
Inventor 赵永生韩博张硕许允斗姚建涛郭路瑶陈阳
Owner YANSHAN UNIV
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