A metal mesh laying method for a frame-type expandable reflector

Abstract

The invention discloses a framework type expandable reflector metal net paving method which comprises the steps that (1) an assembled framework type expandable reflector profile is subjected to offset in the disc chuck normal direction, and an offset design profile is formed; (2) a net face hooking-preventing protecting piece is arranged, the net face hooking-preventing protecting piece is of a circular disc structure with a center circular hole, the center circular hole penetrates through a net pressing connector, the net face hooking-preventing protecting piece is placed between the net pressing connector and a disc chuck, and the net pressing connector is connected with the disc chuck; (3) a metal net is arranged on a reflector truss in a paving mode, pretension is exerted, a net pressing piece is placed on the net pressing connector and the metal net, the net pressing piece, the metal net and the net pressing connector are connected to the disc chuck through net pressing screws, and at the time, the net pressing screws cannot be completely arranged in a fastening mode; and (4) a net pressing wire is arranged in a folding rod direction of a reflector in a paving mode, the net pressing wire is wound on the net pressing screws, then the net pressing screws and the disc chuck are arranged in a fastening mode, and the metal net and the net pressing wire are sewn together.

Description

technical field [0001] The invention relates to a laying method of a frame-type expandable reflector metal net, which belongs to the technical field of satellite antennas. Background technique [0002] The frame-type deployable reflector has been applied to many civil and military antennas in my country at present, and the metal mesh laying method involved in the present invention has been verified by in-orbit flight. [0003] The frame reflector is composed of a truss and a metal mesh. The truss is the main body of the reflector structure, which realizes the function of retracting and unfolding the reflector and structural support. The metal mesh is the carrier of the shape of the reflector to realize the function of microwave reflection. [0004] The reflector truss is composed of several tetrahedral units, and the principle of gathering and unfolding the tetrahedral units is as follows: figure 1 As shown, each tetrahedron unit is composed of 3 webs, 3 synchronous folding...

AI Technical Summary

Problems solved by technology

[0007] 2. The metal mesh is directly connected to the truss rods. Connection and fixing holes are reserved on the truss rods. Kevler wires or copper wires are used to connect the metal mesh to the rods. Earlier products also welded the metal mesh and the rods together. Since the mesh surface tension should be reserved during the metal mesh laying process, there will be technological defects such as back pillow and local stress concentration on the mesh surface at the connection between the folding rod and the metal mesh, and there is a hidden danger of local damage to the metal mesh

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