A Deployable Umbrella Antenna Back Frame Based on Bricard Mechanism

An umbrella-shaped antenna and back frame technology, which is applied in the field of expandable umbrella-shaped antenna back frame, can solve the problems of insufficient rigidity and precision of radial rib deployable antennas, and achieve improved surface accuracy, enhanced circumferential stiffness, and good synchronization sexual effect

Active Publication Date: 2020-11-03
XIDIAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems of the radial rib antenna, the purpose of the present invention is to provide an expandable umbrella-shaped antenna back frame based on a bricard mechanism, so as to improve the rigidity and insufficient precision of the radial rib expandable antenna, and at the same time ensure the good synchronization

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  • A Deployable Umbrella Antenna Back Frame Based on Bricard Mechanism
  • A Deployable Umbrella Antenna Back Frame Based on Bricard Mechanism
  • A Deployable Umbrella Antenna Back Frame Based on Bricard Mechanism

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Aiming at the above-mentioned problems of the radial rib antenna, the present invention provides a design scheme of the back frame structure of the radial rib antenna, which is used to improve the insufficient rigidity and precision of the radial rib deployable antenna.

[0028] The application principle of the present invention will be explained in detail below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, an expan...

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Abstract

The invention relates to the technical field of antennas and particularly relates to an expandable umbrella-shaped antenna back frame based on a bricard mechanism, which is characterized by at least comprising a damping gas spring, a fixed connecting rod joint, a movable connecting rod joint, an umbrella-shaped back frame upper connecting rod, an umbrella-shaped back frame lower connecting rod, afirst bricard mechanism connecting rod, a second bricard mechanism connecting rod, a bricard mechanism positioning bracket, a bricard mechanism positioning joint and a transition joint, wherein the extending end of the damping gas spring is in threaded connection with the central threaded hole of the movable connecting rod joint; movable connecting rod joint hinges are distributed on the outer ring of the movable connecting rod joint; and each movable connecting rod joint hinge is hinged to one end of the umbrella-shaped back frame lower connecting rod. The problems of insufficient rigidity and precision of a radial rib expandable antenna are solved, and good synchronism during expanding and storing is ensured.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an expandable umbrella-shaped antenna back frame based on a bricard mechanism. Background technique [0002] With the deepening of space exploration and the development of aerospace industry, spaceborne antennas are taking on more tasks. Due to the small size of the rocket's fairing, the launch cost is high, which requires lighter weight and smaller antennas to solve this problem. Since the antenna on orbit is too far away from the ground, the signal can only be received by the satellite after long-distance attenuation, which requires the antenna to have higher gain. At the same time, in order to improve other performance indicators, the aperture of the antenna on orbit is inevitably increase. The deployable antenna has the characteristics of light weight and small volume after shrinking, which can meet the current assumptions about large-aperture antennas on orbit. Therefore,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/12H01Q1/18H01Q1/28H01Q1/36
CPCH01Q1/1235H01Q1/18H01Q1/288H01Q1/36
Inventor 全奕多张逸群关怀李彬杨东武杜敬利李申王从思李鹏
Owner XIDIAN UNIV
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