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Easy-to-assemble umbrella-shaped unfoldable antenna rib accurate unfolding and limiting device

A limit device and antenna technology, applied in the direction of folding antennas, etc., can solve the problems of complicated assembly steps, difficulty in ensuring the accuracy of antennas, and difficult assembly, and achieve high reliability, reduce assembly errors, and simplify assembly steps.

Inactive Publication Date: 2019-11-12
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art above, and propose an umbrella-shaped expandable antenna rib that is easy to assemble and accurately deploy and limit the device, so as to solve the complicated assembly steps of the current antenna rib deployment and position limiting device during installation. It is very difficult, the accuracy of the antenna is not easy to guarantee after the assembly is completed, and additional tooling is required

Method used

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  • Easy-to-assemble umbrella-shaped unfoldable antenna rib accurate unfolding and limiting device
  • Easy-to-assemble umbrella-shaped unfoldable antenna rib accurate unfolding and limiting device
  • Easy-to-assemble umbrella-shaped unfoldable antenna rib accurate unfolding and limiting device

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Embodiment Construction

[0025] An easy-to-assemble umbrella-shaped deployable antenna rib precise deployment and limiting device, refer to figure 1 , figure 2 , image 3 with Figure 4 , image 3 with Figure 4 The schematic diagrams of the single antenna rib 7 around the cylindrical pin 2 are fully collapsed and fully expanded respectively. Including hub base 1, cylindrical pin 2, pressing piece 3, fastening screw 4.

[0026] Reference Figure 5 , The hub base 1 has a middle hole quadrangular structure, with four square sides around, and holes in the middle of the four square sides. The hub base 1 specifically includes pin grooves 11, threaded holes 12, rib grooves 13, opening mechanism holes 14, and feeders Source hole 15, waveguide hole 16; thirty identical pin grooves 11 are evenly distributed on the cylindrical boss, the depth is the diameter of the cylindrical pin 2; thirty pairs of threaded holes 12 are evenly distributed in the middle of two adjacent rib grooves 13 , The outer threaded hole is ...

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Abstract

The invention discloses an easy-to-assemble umbrella-shaped unfoldable antenna rib accurate unfolding and limiting device. The device comprises a hub base, cylindrical pins, pressing pieces and fastening screws;, the cylindrical pins are installed in pin holes of the hub base and makes linear contact with the hub base; the pressing pieces are used for pressing the two ends of the cylindrical pins;the fastening screws and the hub base are connected through threads to fix the pressing pieces and compress the cylindrical pins; and holes in the four corners of the hub base are used for being fixed to an antenna unfolding mechanism. The easy-to-assemble antenna rib accurate unfolding and limiting device is provided for the umbrella-shaped unfoldable antenna, so accurate unfolding and limitingof the antenna rib with the axis of the cylindrical pins as the rotating axies can be achieved, and the antenna rib accurate unfolding and limiting device has the advantages of being easy to assemble,high in machining manufacturability and stable in unfolding.

Description

Technical field [0001] The invention belongs to the technical field of satellite-borne antennas, and particularly relates to an easy-to-assemble umbrella-shaped expandable antenna rib precise deployment and limiting device in the technical field of satellite-borne antennas, which can be applied to the design of high-precision umbrella-shaped expandable antennas. Background technique [0002] The rapid development of aerospace science and technology puts forward higher and higher requirements for space-borne deployable antennas. Umbrella-shaped deployable antennas have outstanding advantages in terms of storage ratio, surface density, deployment performance, and surface retention in orbital thermal environments. The advantages have received high attention and extensive research from many international aerospace research institutions. [0003] The umbrella-shaped deployable antenna rib deployment and limit device is a key device connecting the deployment mechanism and the antenna str...

Claims

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Application Information

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IPC IPC(8): H01Q1/08
CPCH01Q1/08
Inventor 张树新韩晓童邢永涛
Owner XIDIAN UNIV
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