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Shear unit hybrid array-type surrounding truss expandable antenna mechanism

A scissor-type unit and array-type technology, applied in the direction of folded antennas, etc., can solve the problems of few types of expandable antenna mechanisms and reduced structural rigidity, and achieve the effects of good assembly and manufacturing process, large overall folding, and high structural symmetry.

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

[0004] Due to the good performance advantages of the perimeter truss deployable antenna in the field of large-aperture and super-large-aperture deployable antennas, relevant researchers from various countries have done a lot of research on the deployment mechanism, cable net forming and deployment control of the perimeter truss deployable antenna. But on the whole, there are still few types of deployable antenna mechanisms with peripheral trusses currently in orbit, and with the increase of the antenna aperture, the overall structural rigidity drops more seriously

Method used

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  • Shear unit hybrid array-type surrounding truss expandable antenna mechanism
  • Shear unit hybrid array-type surrounding truss expandable antenna mechanism
  • Shear unit hybrid array-type surrounding truss expandable antenna mechanism

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Embodiment 1

[0034] In the present embodiment, it comprises 12 (N=12) scissor units 7 of trapezoidal section and 12 scissor units 8 of triangular section. The two types of scissor units are interspersed and arranged in an array. The two inner layer node connectors 1 and the two outer layer node connectors 5 are connected together to form a multi-faceted peripheral truss mechanism.

[0035] Such as Figure 4 , Figure 5 as well as Figure 9 and Figure 10 As shown, the trapezoidal cross-section scissor unit 7 mainly includes four inner layer node connectors 1, four outer layer node connectors 5, four inner layer connecting rods 3, four intermediate connecting rods 2 and two outer layer Scissor bar 4; the four inner layer node connectors 1 have exactly the same structure, and each inner layer node connector has four forks, and the whole is a plane-symmetrical structure, with two forks on the left and right sides of the middle symmetrical plane , each fork has a notch, the two outer forks...

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Abstract

The invention discloses a shear unit hybrid array-type surrounding truss expandable antenna mechanism. The shear unit hybrid array-type surrounding truss expandable antenna mechanism comprises N trapezoid cross-section shear units and N triangular cross-section shear units which are respectively and mainly formed by connecting an inner-layer node connection piece, an outer-layer node connection piece, an inner-layer connection rod, an intermediate connection rod, an outer-layer shear rod and an outer-layer connection rod by a rotation pair, two types of shear units penetrate through each otherand are arranged in an array way, and a multi-surface surrounding truss mechanism is jointly formed by connecting the two shared intermediate connection rods, the two inner-layer node connection pieces and the two outer-layer node connection pieces. The integral mechanism has relatively high structure symmetry; by changing the numbers of the trapezoid shear unit and the triangular cross-section shear units in the integral mechanism and length of the rod, the surrounding truss space expandable mechanism with different scales can be formed, and the shear unit hybrid array-type surrounding trussexpandable antenna mechanism can be applied to a large-aperture satellite-borne antenna very well.

Description

technical field [0001] The invention relates to the technical field of deployable antenna mechanisms, in particular to a scissor unit mixed array peripheral truss deployable antenna mechanism. Background technique [0002] In the fields of advanced satellite communication, wireless broadcasting system, earth observation, land remote sensing, deep space exploration and deep space communication, a large deployable antenna is one of the essential key equipment, and the deployable antenna has two states of folding and unfolding , it is in a folded state during the satellite launch process, and after entering orbit, it can be deployed to enter the working state. Relevant scientific research institutions have developed many principle prototypes of deployable antennas, including frame type, peripheral truss type, radial rib type and folded rib type. These structures have their own characteristics, and several models have been launched into orbit. Compared with other antenna struct...

Claims

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Application Information

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IPC IPC(8): H01Q1/08
CPCH01Q1/08
Inventor 赵永生韩博许允斗姚建涛张硕郑东陈阳
Owner YANSHAN UNIV
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