Rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism

A Cassegrain antenna and rope-driven technology, applied in the direction of rotating antenna, antenna, folding antenna, etc., can solve the problems of poor synchronization of radiation ribs, inability to expand twice, and failure to ensure simultaneous expansion of radiation ribs, etc., to achieve synchronization Good, small impact, smooth unfolding process

Active Publication Date: 2020-04-10
XIDIAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0004] However, the umbrella-shaped deployable antenna has two large impacts, namely the moment when the secondary surface is fully deployed and the moment when the radiation ribs are fully deployed, and the synchronization of the

Method used

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  • Rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism
  • Rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism
  • Rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism

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Embodiment 1

[0050] See figure 1 , figure 2 , figure 1It is a schematic cross-sectional view of the overall structure of a cable-driven umbrella-shaped Cassegrain antenna main and secondary surface stable deployment mechanism provided by an embodiment of the present invention, figure 2 It is a schematic cross-sectional view of the overall structure of a cord-driven umbrella-shaped Cassegrain antenna stable deployment mechanism for primary and secondary surfaces provided by an embodiment of the present invention in a folded state. This embodiment provides a rope-driven umbrella-shaped Cassegrain antenna main and secondary surface stable deployment mechanism, the rope-driven umbrella-shaped Cassegrain antenna main and secondary surface stable deployment mechanism includes:

[0051] Central hub 1, radiation rib 2, feed horn 3, auxiliary surface 4, spring 5, main surface rope 6, auxiliary surface rope 7, winding mechanism 8.

[0052] Specifically, it can be seen from the above that the tr...

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Abstract

The invention relates to a rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism. The mechanism comprises a central hub, radiation ribs, a feed source horn, an auxiliary surface, a spring, a main surface rope, an auxiliary surface rope and a winding mechanism, and the central hub is a fixed component; one end of each radiation rib is hinged with the central hub; the feed source horn and the center hub are coaxially and fixedly connected to the upper surface of the interior of the center hub; the secondary surface is coaxially connected with the feed source horn; the spring sleeves the feed source horn, is in contact with the bottom of the auxiliary surface and pops up the auxiliary surface when the antenna is unfolded; the main surface rope penetrates through the slots of the radiation ribs and the holes in the side surface of the central hub, and two ends of the main surface rope are fixedly connected with the radiation ribs and the auxiliary surface respectively; the auxiliary face rope penetrates through the hole in the bottom face of the center hub, and the two ends of the auxiliary face rope are fixedly connected with the auxiliary face and the winding mechanism. According to the invention, the unfolding process is stable, the impact on the antenna is small, the radiation ribs are unfolded while the auxiliary surface is unfolded, the unfolding synchronism of the antenna is good, and the antenna can be folded automatically for multiple times.

Description

technical field [0001] The invention belongs to the technical field of space-borne antennas, and in particular relates to a mechanism for stably deploying the primary and secondary surfaces of an umbrella-shaped Cassegrain antenna driven by a cable. Background technique [0002] The space-borne deployable antenna is an important part of the satellite structure. It refers to the antenna that is folded and stored in the fairing during launch, and once it reaches the predetermined position, it will automatically unfold to form a working state shape. Due to the limitation of rocket caliber, large-diameter satellite antennas cannot be directly transported into space. Therefore, how to fold satellite antennas to minimize their volume so that they can be transported by rockets has become a very urgent problem to be solved. [0003] At present, the more mature spaceborne deployable antennas, such as fixed surface, inflatable, frame and surrounding truss, are difficult to meet the re...

Claims

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Application Information

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IPC IPC(8): H01Q1/08H01Q13/02H01Q15/16H01Q19/13
CPCH01Q1/08H01Q1/084H01Q13/02H01Q15/161H01Q19/132
Inventor 张树新韩晓童邢永涛
Owner XIDIAN UNIV
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