Linear truss type deployable parabolic cylinder antenna mechanism
A parabolic cylinder and truss-type technology, which is suitable for antennas, antennas, and folding antennas on movable objects, can solve the problems of large overall size and quality, and achieve high axial folding ratio and deployment reliability high effect
Active Publication Date: 2021-10-08
XIDIAN UNIV
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Problems solved by technology
A traditional parabolic antenna consists of a metal or metallized parabolic reflective surface, supported by a support structure, and has a large overall size and mass
Method used
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[0037] like Picture 1-1 , Figure 1-2 , Figure 1-3 , a linear truss-type expandable parabolic antenna mechanism, at least comprising: an expandable linear truss 1, a scissor-type extension arm 2, a truss joint 3, and an extension arm drive unit 8; the scissor-type extension arm unit 2 passes the scissors The arm fixing pair 4 is connected with the linear truss unit 1, and the scissor-type extension arm 2 includes two groups of left and right, and the left and right groups of scissor-type extension arms 2 are connected with the middle expandable linear truss 1 through the left and right truss joints 3, so that the left and right groups The scissor-type extension arms 2 are symmetrically arranged on both sides of the expandable linear truss 1;
[0038] like Figure 1-3 As shown, the linear truss unit 1 is composed of two identical basic expandable units 7 and one extension arm driving unit 8 , and the two basic expandable units 7 are symmetrically distributed around the exte...
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The invention belongs to the field of satellite-borne deployable antennas, and particularly relates to a linear truss type deployable parabolic cylinder antenna mechanism which is characterized by at least comprising deployable linear truss units (1), scissor- fork type extension arm units (2), truss connectors (3) and extension arm driving units (8), wWhen the scissor-fork type extension arm units (2) are connected with the linear truss unit (1) through scissor-fork arm fixing pairs (4), the scissor-fork type extension arm units (2) comprise a left group and a right group, the left group of scissor-fork type extension arm unit (2) and the right group of scissor-fork type extension arm unit (2) are connected with the middle extensible linear truss unit (1) through the left and right truss connectors (3), and the left and right groups of scissor-fork type extension arm units (2) are symmetrically arranged on the two sides of the expandable linear truss unit (1). The linear truss type deployable parabolic cylinder antenna mechanism provided by the invention can realize higher rigidity, high deployment reliability, large working aperture and high folding-unfolding ratio of a parabolic cylinder antenna, so as to meet the requirement of the large space deployable parabolic cylinder antenna on the rigidity.
Description
technical field [0001] The invention belongs to the field of spaceborne deployable antennas, in particular to a linear truss type deployable parabolic cylinder antenna mechanism. Background technique [0002] Space-borne deployable antennas are used in fields such as earth observation, space communication, deep space exploration, manned spaceflight, and meteorological monitoring. They act as "eyes" and "ears" and are essential key equipment. With the development of space technology, satellite antennas require high precision, high rigidity, large working caliber and small mass. However, the space of the rocket fairing carrying the satellite antenna is limited, so the large-diameter satellite antenna must be expandable And it must have a high folding-expanding ratio, that is, the antenna is folded in the fairing of the rocket when it is launched, and it will automatically unfold to the predetermined working state after entering orbit. The parabolic antenna has the advantages ...
Claims
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IPC IPC(8): H01Q1/12H01Q1/10H01Q1/28H01Q15/16
CPCH01Q1/1235H01Q1/10H01Q1/103H01Q1/288H01Q15/16
Inventor 杨东武权朝阳杜迪迪张逸群李申杜敬利张树新
Owner XIDIAN UNIV