Pressing device for planar antenna and layout method

Abstract

The invention discloses a pressing device for a planar antenna and a layout method. The pressing device comprises a first sleeve, a pressing rod, an embedded part, a second sleeve, a third sleeve, a force application sleeve, an outer sleeve, a honeycomb pad, a pressing nut, a spherical pad, a spring top sleeve, a compression spring, a spring bottom sleeve and a separation nut. The pressing device takes two antenna plates as a group and is respectively connected with a satellite platform, so that 'layered pressing' between a plurality of plates and a satellite body is realized. According to the invention, the release stroke of the pressing device is not influenced by the number of the antenna plates, and the connection of a plurality of plates and a star body is converted into a connection structure form of two plates and the star body, so that the reliability of unlocking is improved; the shell and the star platform are positioned and reset through the separation nut, and compared with a pin positioning mode, the problems that the machining difficulty of a star mounting surface is large, and the precision is difficult to guarantee are solved; and compression among a plurality of antenna plates is transmitted through the embedded parts, and compared with a traditional sleeve for transmitting force, the compression effect of the antenna is better.

Description

technical field [0001] The invention belongs to the technical field of aerospace vehicles, and in particular relates to a pressing device and a layout method for planar antennas. Background technique [0002] At home and abroad, there are many researches and applications on the pressing mechanism of satellite solar cell wings. Compared with the solar wing, the SAR planar antenna has the characteristics of heavy load and thick size. At present, the compression of SAR planar antennas is divided into two types according to the structural form, mainly perforated and non-perforated. Non-perforated type such as compression lock, because it can only be between the star and the antenna, so it is only suitable for locking a single antenna plate; while the perforated type can be used for locking two antenna plates, such as foreign applications are more typical There is Canada's RADARSAT satellite, which uses a compression rod to connect two antenna panels. However, for the structura...

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Problems solved by technology

[0003] a. In the traditional locking scheme, when multiple panels are unfolded, movement interference between the compression rod and the antenna panel is very likely to occur, and there is a hidden danger of hooking, which in turn affects the reliability of unlocking;

[0004] b. For devices that use elastic elements to realize unlocking, due to the increase in antenna thickness caused by multi-layer boards, the release stroke of the pressing rod will increase significantly, making the outer envelope of the pressing mechanism easily exceed the safety boundary of the carrying fairing ;

[0005] c. The pin positioning method is used, which makes it difficult to process the star mounting surface and the accuracy is difficult to guarantee

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