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foldable hexahedron structure

A hexahedron and planar technology, applied in the field of foldable polyhedron structures, can solve the problems of difficult repeated operation, unfavorable deformation process, foldable polyhedron fold-expand ratio less than 1.1, etc., to reduce the instability of installation and manipulation, installation and Easy to use, easy to transport and store

Inactive Publication Date: 2018-06-01
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing spatially expandable structures mainly involve folding on planes or curved surfaces, such as solar panels and satellite antennas, while folding mechanisms involving volume are mainly obtained by non-rigid deformation. The deformation process is not conducive to control and is not easy to repeat. , the existing expandable polyhedron that adopts rigid deformation is either complex in structure, such as the foldable polyhedron structure driven by a regular polygon mechanism proposed by C.M.Gosselin and D.Gagnon-Lachance in 2006; or it cannot be completely folded, such as Kiper and The folding ratio of the foldable polyhedron proposed in 2009 is less than 1.1

Method used

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Embodiment Construction

[0037] In order to further understand the content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0038] Such as figure 1 As shown, the present embodiment provides a foldable hexahedron structure, including six folding units, twelve rod units and a symmetry axis 1; each folding unit has a plane equilateral quadrilateral profile, and the plane equilateral Four vertices of the quadrilateral are respectively called the first vertex, the second vertex, the third vertex, and the fourth vertex of each folded unit; the two ends of each bar unit are respectively called its first end point and second end point; six The side lengths of the planar equilateral quadrilateral of the folding units are all equal, and the lengths of the twelve rod units are also equal. Preferably, the six folding units are all planar equilateral quadrilateral sheet structures, and...

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Abstract

The invention relates to a foldable polyhedron structure with a single degree of freedom and a large fold-to-expand ratio. It discloses a foldable hexahedron structure, which includes six foldable units, twelve rod units and a symmetry axis. The six foldable units consist of The connection positions on the 12 rod units are respectively connected with the connection positions on the twelve rod units through rotating joints or spherical joints to form a closed polyhedron structure, and each unit and kinematic joints satisfy a series of symmetric relations and constraints about the symmetry axis, thus constructing a possible A tetradecahedron folded into a hexahedral structure. The present invention can realize two stable states of folding and unfolding. When folded, the volume is smaller for launch or transportation, and when unfolded, it has a larger working space; the whole structure has only one degree of freedom, and has the advantages of simple production and processing, convenient motion control, and high reliability. It has great significance and broad application prospects in aerospace, civil engineering and many other fields.

Description

technical field [0001] The invention relates to a foldable polyhedron structure with a single degree of freedom and a large fold-to-expand ratio, and specifically relates to a transformation between a tetradecahedron and a hexahedron realized by a single drive. Background technique [0002] Due to its good symmetry, polyhedral structures are widely used in aerospace, architectural structures, artworks and daily life. However, due to their large size and unfavorable transportation, polyhedral structures are often only used in fixed occasions. Cube small satellites, which were rated as one of the top ten scientific and technological breakthroughs in 2014 by the SCIENCE journal, are typical representatives of the aerospace field in pursuit of miniaturization and low-cost launch. However, the shortcoming of its small working space in the orbital state also restricts its further application. [0003] The space foldable structure is a new type of structure born with the developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/22B64G1/44E04B1/344
CPCE04B1/344E04B1/3447B64G1/222B64G1/44
Inventor 陈焱杨富富康荣杰马家耀
Owner TIANJIN UNIV