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A new ring-shaped deployable truss structure

A technology of a truss structure and a ring structure, which is applied in the direction of a folded antenna, etc., can solve the problems of a large folding height, a large folding diameter, and the structure cannot continue to be folded, and achieves the effect of reducing the folding height and reducing the folding diameter.

Active Publication Date: 2019-02-26
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown in the figure, the horizontal bars and diagonal bars of the parallelogram unit structure are located in the same plane, so when the truss is folded to a certain angle, the horizontal bars and the diagonal bars will collide, resulting in the structure being unable to continue to be folded, and the folded diameter is too large
Secondly, the five-point hinge and the three-point hinge of the AM-1 antenna are connected to the vertical pole with a fixed pair, resulting in a large folding height when the antenna is folded.

Method used

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  • A new ring-shaped deployable truss structure
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  • A new ring-shaped deployable truss structure

Examples

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Embodiment 1

[0026] This embodiment provides a new type of ring-shaped expandable truss structure, including a plurality of parallelogram-like structural units, and adjacent parallelogram-like structural units are connected by three-point hinges and five-point hinges to form a closed ring structure; figure 2 As shown, one of the parallelogram-like structural units includes two vertical bars with the same structure, the first vertical bar 1 and the second vertical bar 2, two horizontal bars with the same structure, the first horizontal bar 3 and the second horizontal bar 4, and the first horizontal bar 3 and the second horizontal bar 4. A slanting bar 5 and a second slanting bar 6, two slanting bars, the first five-point hinge 7 and the second five-point hinge 8, two five-point hinges with the same structure, and the first three-point hinge 9 and the second three-point hinge 10 Two three-point hinges with the same structure; the upper end of the first vertical bar 1 is connected to the firs...

Embodiment 2

[0028] On the basis of Embodiment 1, the first vertical bar 1 and the first three-point hinge 9 , and the second vertical bar 2 and the second three-point hinge 10 are all connected by sliding pairs. The connection between the first crossbar 3 and the second three-point hinge 10 and between the second crossbar 4 and the first three-point hinge 9 are all connected by rotating pairs. Both the first vertical bar 1 and the first five-point hinge 7, and the second vertical bar 2 and the second five-point hinge 8 are connected by fixed pairs. The first slanting rod 5 and the second slanting rod 6 are connected by a sliding pair, and the two form a telescopic sleeve structure.

[0029]The novel ring-shaped expandable truss structure also includes two driving ropes, which are deployed using two driving ropes and spring drive. The first driving rope starts from the first five-point hinge 7 interface on the first vertical bar 1 and passes through the The first cross bar 3, then bypasse...

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Abstract

The invention discloses a novel annular deployable truss structure which consists of a plurality of parallelogram-like unit structures, and the adjacent parallelogram-like unit structures are connected by three-point hinges and five-point hinges to form a closed annular structure. Each parallelogram-like unit structure is composed two vertical rods, two cross bars, two diagonal rods, two five-point hinges and two three-point hinges. The adjacent two parallelogram-like unit structures share one vertical rod, one five-point hinge and one three-point hinge. The upper cross bars, the diagonal rods, the lower cross bars are distributed in three mutual-parallel planes in the horizontal direction, and each bar or rod does not influence others in movement. When the truss is completely folded, each bar or rod is distributed in the vertical direction, so that the folding diameter of the truss is effectively reduced. The vertical rods and the three-point hinges are connected through sliding pairs. When the truss is folded, the three-point hinges can slide in the directions of the vertical rods, and the folding height of the truss is greatly reduced.

Description

technical field [0001] The invention belongs to the field of space-borne deployable antennas, in particular to a novel ring-shaped deployable truss structure. Background technique [0002] With the continuous advancement of space detection technology, the technical requirements for large spaceborne antennas are also getting higher and higher. Loop deployable antenna is currently an ideal structural form of large spaceborne antenna because of its advantages of large aperture, light weight, high precision, and high storage rate. [0003] The AM-1 loop deployable antenna of Northrop Grumman Company of the United States has been successfully used in space satellites many times, and it is currently the most advanced spaceborne loop deployable antenna in the world. The circular expandable structure of the AM-1 antenna is generally composed of 30 parallelogram units, and each parallelogram unit has a telescopic sleeve structure arranged along the diagonal direction. By changing t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/08
CPCH01Q1/08
Inventor 杨东武张涛郭王策方栋胡二龙
Owner XIDIAN UNIV
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