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Scissors type hexagonal-prism-shaped extensible unit and space extensible mechanism formed by same

A technology of hexagonal prism and scissors, which is applied in the field of expandable mechanisms, can solve the problems of less unit types, no guarantee, and single degree of freedom of movement, and achieve the effect of good deployment performance, simple structure, and high reliability

Active Publication Date: 2017-11-07
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Future missions such as planetary exploration and space operations require space expandable mechanisms to complete. However, there are few types of existing new expandable mechanism units, which mainly use complex connection nodes or unit methods, which cannot obtain a more ideal retraction rate, or It cannot guarantee that the unit always has a single degree of freedom in the process of unfolding and folding, which reduces the reliability of mechanism deployment

Method used

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  • Scissors type hexagonal-prism-shaped extensible unit and space extensible mechanism formed by same
  • Scissors type hexagonal-prism-shaped extensible unit and space extensible mechanism formed by same
  • Scissors type hexagonal-prism-shaped extensible unit and space extensible mechanism formed by same

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Experimental program
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Effect test

Embodiment 1

[0023] exist figure 1 In the schematic diagram of the scissor-type hexagonal prism expandable unit shown, the structure of the twelve scissor bars is exactly the same, and the two scissor bars form a group. A total of six sets of scissor folding rods are formed, and the six groups of scissor folding rods are symmetrically distributed on the six sides of the basic expandable unit. In the same way, two connecting rods form a group, and one end of the two connecting rods is connected by a rotating pair. Twenty-four connecting rods form twelve groups of folding connecting rods, and the twelve groups of folding connecting rods are symmetrically distributed in the basic expandable unit. There are six sets of folding connecting rods on the upper and lower surfaces, and the folding connecting rods on the opposite side have the same folding direction; the structure of the twelve faceplates is exactly the same, and each faceplate has three forks. Each fork is provided with a two-sided ...

Embodiment 2

[0029] Such as Figure 5-Figure 7 As shown, the space expandable mechanism composed of scissor-type hexagonal prism expandable units includes a plurality of basic expandable units, the components and connection methods of each basic expandable unit are the same as those in Example 1, and the multiple basic expandable units are closely arranged. , the adjacent basic expandable units share four faceplates, a set of scissors folding rods and two sets of folding links, wherein the four ends of the shared set of scissors folding rods are respectively inserted into the opening slots of the four shared faceplates, The four rotating pairs are connected to the inner cylindrical holes of the four faceplate opening slots, and the two ends of the shared two sets of folding connecting rods are respectively inserted into the opening grooves of the four shared faceplates, and are connected to the outer cylindrical holes of the faceplate opening grooves through the rotating pairs; Figure 5-F...

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Abstract

The invention relates to a scissors type hexagonal-prism-shaped extensible unit and a space extensible mechanism formed by the same. The scissors type hexagonal-prism-shaped extensible unit is a single-freedom-degree over-constrained hexagonal-prism-shaped basic extensible unit and comprises twelve faceplates, six groups of scissors type folding rods, and twelve groups of folding connecting rods. One group of folding connecting rods limits the extending degree of the basic extensible unit by the connecting rod lengths and the other eleven groups of folding connecting rods are over-constrained folding connecting rods, so that the rigidity of the basic extensible unit is improved effectively. Multiple basic extensible units are arranged closely and the adjacent basic extensible units can form a space extensible mechanism by sharing four faceplates, one group of scissors type folding rods and two groups of folding connecting rods; and the size of the pace extensible mechanism can be changed by changing the number of basic extensible units. The provided scissors type hexagonal-prism-shaped extensible unit has high structural symmetry; and different large-dimension space extensible mechanisms can be formed based on assembling of the multiple extensible units. Therefore, the scissors type hexagonal-prism-shaped extensible unit and the space extensible mechanism are suitable for constructing a space solar battery array bracket and a satellite planar reflecting antenna.

Description

technical field [0001] The invention relates to an expandable mechanism, in particular to a space expandable mechanism. Background technique [0002] The expandable mechanism originated in the 1960s. In recent years, with the rapid development of the aerospace industry, the functions of various spacecraft have become increasingly complex. Due to the energy requirements of spacecraft, the solar cell arrays on various spacecraft The area continues to grow. At the same time, in the field of spaceborne antennas, in order to meet the high gain requirements of spaceborne antennas for key aerospace technologies such as electronic reconnaissance, data relay, and ground navigation, the aperture of spaceborne antenna reflectors is also increasing. However, due to the Due to the space limitation of the space vehicle, the aerospace mechanism must be folded and folded in the fairing during the launch phase. After the spacecraft enters the orbit, it will be deployed to the working state b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/08H02S20/30
CPCH01Q1/08H01Q1/288H02S20/30Y02E10/50
Inventor 赵永生韩博许允斗姚建涛刘文兰陈亮亮
Owner YANSHAN UNIV
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