Novel annular deployable truss structure

A truss structure and ring-shaped technology, applied in the direction of folding antennas, etc., can solve the problems of large folding height, large folding diameter, collision between crossbar and oblique rod, etc., and achieve the effect of reducing the folding diameter and reducing the folding height

Active Publication Date: 2017-07-28
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 structu

Method used

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  • Novel annular deployable truss structure
  • Novel annular deployable truss structure
  • Novel annular deployable truss structure

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0025] Example 1:

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

Example Embodiment

[0027] Example 2:

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

[0029] The new ring-shaped deployable truss structure also includes two driving ropes, which use two driving ropes and spring drive for deployment. The first driving rope starts from the first five-point hinge 7 interface on the first vertical rod 1, and passes through The first crossbar 3, then bypasses the pulley provided...

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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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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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