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Conical single-layer annular truss deployable antenna mechanism driven by torsional spring

A ring-shaped truss and antenna structure technology, which is applied to antennas on movable objects, folding antennas, etc., can solve problems such as inability to meet rigidity requirements, low deployment reliability, and complex drive mechanisms, and achieve light weight and lightening The effect of rapid weight and unfolding process

Inactive Publication Date: 2020-04-07
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: in order to solve the existing single-layer annular truss mechanism, the rigidity decreases with the increase of the antenna aperture, which cannot meet the rigidity requirements in use, and the existing annular truss antenna has a complex driving mechanism and a large weight , low deployment reliability, and low storage ratio, and then provide a torsion spring-driven conical single-layer ring truss expandable antenna structure

Method used

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  • Conical single-layer annular truss deployable antenna mechanism driven by torsional spring
  • Conical single-layer annular truss deployable antenna mechanism driven by torsional spring
  • Conical single-layer annular truss deployable antenna mechanism driven by torsional spring

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Embodiment

[0048] Take the deployable antenna structure of a regular 10-sided conical single-layer ring truss as a specific implementation example (N=10). exist figure 1 , figure 2 and image 3 In the three-dimensional structural diagram of the expandable antenna structure of the conical single-layer ring truss driven by torsion springs, there are 10 isosceles trapezoidal folding units A, and the structure of each isosceles trapezoidal folding unit A is exactly the same. It is connected by a shared slanting rod and upper and lower corner hinges to form a regular 10-sided expandable ring truss structure. The entire torsion spring-driven conical single-layer ring truss expandable antenna structure is a regular 10-sided frustum-shaped truss structure, and the folded state is cylindrical.

[0049] The trapezoidal folding unit includes two upper chords, two lower chords, two sets of torsion spring drive assemblies, two inclined bars, four sets of corner slider assemblies and four corner h...

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Abstract

The invention relates to a conical single-layer annular truss deployable antenna mechanism driven by torsional springs. The conical single-layer annular truss deployable antenna mechanism comprises Nisosceles trapezoid folding and unfolding units, wherein N>=3. The structure of the isosceles trapezoid folding and unfolding units are completely the same, and the adjacent folding and unfolding units are connected through shared inclined rods and upper and lower corner hinges to form a regular N-polygon annular truss; and each trapezoidal folding and unfolding unit comprises chord members, a crank rod piece, a torsion spring driving assembly, an inclined rod, a corner sliding block assembly and a corner hinge, and the chord members comprise the upper chord member and the lower chord member.According to the annular truss structure with the taper, the overall structural rigidity is not lower than that of a columnar annular truss structure under the conditions of the same caliber and the same mass, the rigidity is high, and the using rigidity requirement of a space large-caliber deployable antenna can be met.

Description

technical field [0001] The invention relates to an expandable antenna structure, in particular to an expandable antenna structure of a conical single-layer ring truss driven by a torsion spring, which belongs to the technical field of aerospace equipment and equipment. Background technique [0002] With the rapid development of manned spaceflight, earth observation, deep space exploration, and space communication, the size of space mechanisms required in various aerospace projects is getting larger and larger to meet the needs of different space missions. Due to the limitation of the effective space of the tool, it is necessary to design a space expandable mechanism with a large folding ratio. It is in a folded state during the launch and transportation stages and is folded in the fairing. After the spacecraft enters orbit, it will be deployed to the working state. [0003] Many types of single-story perimeter truss structures have been proposed, most of which are columnar. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08H01Q1/28
CPCH01Q1/08H01Q1/28
Inventor 李萌吴桐耿新宇李媛媛仝照远崔程博翟家跃
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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