A Passive Deployment Driver for Spatial Mesh Antenna Based on Noncircular Gears

A non-circular gear and driver technology, applied in the aerospace field, can solve problems such as unsuitability for the deployment of mesh antennas, and achieve the effects of reducing the deployment force of the antenna, simple structure, and optimized energy utilization

Active Publication Date: 2018-02-27
TSINGHUA UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Therefore, the unfolding torque of the torsion spring or motor input required by the whole system should be small at the beginning and large at the end, just opposite to the characteristics of ordinary torsion springs, that is to say, traditional torsion springs are not suitable for the deployment requirements of mesh antennas

Method used

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  • A Passive Deployment Driver for Spatial Mesh Antenna Based on Noncircular Gears
  • A Passive Deployment Driver for Spatial Mesh Antenna Based on Noncircular Gears
  • A Passive Deployment Driver for Spatial Mesh Antenna Based on Noncircular Gears

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Embodiment Construction

[0022] A non-circular gear-based mesh antenna passive deployment driver proposed by the present invention is further described in conjunction with the accompanying drawings and embodiments as follows:

[0023] The present invention proposes a non-circular gear-based mesh antenna passive deployment driver. The driver includes a fixed frame, a pair of gear shafts extending into the frame at a fixed position, and a pair of non-circular gears with pitch curves meshing with each other on the gear shaft. Two sets of spur gear trains with a given transmission ratio, a linear planar scroll spring, a circular groove frame for installing the spring, and an output cylinder for the antenna to unwind and drive the wire winding; among them, the fixed frame is left-right symmetrical "Concave" shape structure, the plane scroll spring is installed in the circular groove frame, the circular groove frame is installed on the shaft protruding from one side of the fixed frame, and the output cylinde...

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Abstract

The invention relates to a spatial net-shaped antenna passive unfolding drive based on non-circular gears, and belongs to the technical field of space techniques. The spatial net-shaped antenna passive unfolding drive comprises a fixed frame, a pair of gear shafts, a pair of non-circular gears, two groups of straight toothed spur gears, linear planar spiral springs, circular groove frames and an output cylinder, wherein pitch curves of the non-circular gears are meshed with each other on the gear shafts; the straight toothed spur gears have provided transmission ratios; springs are mounted in the circular groove frames; the output cylinder is used for unfolding an antenna and used for driving a winding wire; the circular groove frames for mounting the springs are mounted on a shaft extending from a side surface of the fixed frame; the linear planar spiral springs are mounted inside the groove frames; the cylinder for driving the winding wire is mounted on a shaft extending from another side surface of the fixed frame; the non-circular gears are respectively fixedly connected with a standard gear on the innermost side of two groups of the straight toothed spur gear systems, rotate coaxially with the standard gear and work on the pair of the gear shafts. The spatial net-shaped antenna passive unfolding drive has the characteristics of simple structure and good engineering adaptability.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a passive deployment driver of a space mesh antenna based on non-circular gears. Background technique [0002] In recent years, in order to detect small power signals, mobile communication satellites, electronic reconnaissance satellites, and data relay satellites are in urgent need of large-aperture space-deployable antennas. Among various antenna schemes, compared with solid-surface antennas, the mesh antenna is favored due to its lower area density and higher deployment ratio. Structurally, the mesh surface is divided into triangles by ropes or carbon tapes in the working state and attached with a metal mesh to reflect electromagnetic signals, and is regularly folded and folded in the emission state to reduce storage space; the expandable truss responsible for unfolding and supporting the mesh surface mainly has a diameter Directional (umbrella antenna) and cir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H37/02
CPCF16H37/02
Inventor 赵治华李萌
Owner TSINGHUA UNIV
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