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Novel scissor-based annular array extensible mechanism

A ring array and scissors technology, applied in the direction of folded antennas, antenna supports/installation devices, etc., can solve the problems of complex driving structure, high overall reliability, and large opening diameter, and achieve small overall quality, high overall reliability, and high reliability. Expand the effect of large diameter

Inactive Publication Date: 2014-10-01
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the deficiencies of the existing technology and overcome the problems of complex driving structure, heavy system weight and increased cost of the mechanism, the present invention proposes a new type of scissors-based annular array expandable mechanism, which uses the proportional relationship of its geometric dimensions to achieve According to the requirements of contraction and expansion, the synchronous expansion of each unit is realized by using the connection mode between each unit; the scissors-based annular array expandable mechanism has a large expansion caliber, a small contraction caliber, relatively small overall mass, and high overall reliability

Method used

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  • Novel scissor-based annular array extensible mechanism

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Embodiment Construction

[0033] This embodiment is a novel scissor-based circular array deployable mechanism.

[0034] See Figure 3~Figure 16 , This embodiment of the scissor base circular array deployable mechanism is composed of multiple scissor unit mechanisms with the same structure. The scissor unit mechanisms are connected by a shared movable joint assembly, a fixed joint assembly and a vertical rod connection combination; The movement of the joint assembly realizes the unfolding movement of the scissor-based circular array deployable mechanism. Through the symmetry of the two ends of the movable joint assembly and the fixed joint assembly, the synchronous deployment of adjacent scissors unit mechanisms is ensured.

[0035] The scissors unit mechanism consists of a central rotating joint assembly 4, two moving joint assemblies 1, two fixed joint assemblies 3, two vertical rods 2 and a first inclined rod 5, a second inclined rod 6, a third inclined rod 7, and a first inclined rod. It consists of fo...

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Abstract

The invention discloses a novel scissor-based annular array extensible mechanism. The mechanism comprises a plurality of scissor unit mechanisms of the same structure, the scissor unit mechanisms are connected and combined through shared mobile connector components, shared fixed connector components and vertical rods. Each scissor unit mechanism comprises a center rotating connector component, the mobile connector components, the fixed connector components, the vertical rods and inclined rods, the two mobile connector components and the two fixed connector components are fixedly connected with the two vertical rods respectively, one ends of the four inclined rods are hinged to one side ends of the two mobile connector components and one side ends of the two fixed connector components respectively, and the other ends of the four inclined rods are fixedly connected with the center rotating connector component respectively. Due to the fact that the scissor unit mechanisms are annularly arrayed, and the overall annular array extensible mechanism is formed. After the overall mechanism is arranged in an array, only one freedom degree exists, and the mechanism is simple in structure, and easy to machine and install. The novel scissor-base annular array extensible mechanism is large in extending caliber, small in shrinking caliber, small in overall weight and high in overall reliability.

Description

Technical field [0001] The invention belongs to the technical field of structural design, and specifically relates to a novel scissor-based annular array deployable mechanism, which is suitable for a satellite antenna deployment system with a large-area deployable structure. Background technique [0002] Spaceborne deployable antennas are widely used in various satellites in geostationary orbit. The aperture and rigidity of its deployment mechanism are important indicators of the performance of the deployable antenna. [0003] figure 1 , figure 2 The folded state and unfolded state of the DAISY deployable antenna jointly developed for the German Dornier Company and ESA. This common deployable antenna is composed of a panel and a central hub, wherein the panel and the central hub are hinged through a rotating pair, and the antenna is deployed through rotation. The advantages of the expandable antenna are high precision in shape and surface, high storage rate and high structural ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08H01Q1/12
Inventor 袁茹王钊张冲邓文奎王艺杰黄涛
Owner NORTHWESTERN POLYTECHNICAL UNIV
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