CN202611067U - Cable-strut folding grid structure - Google Patents
Cable-strut folding grid structure Download PDFInfo
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- CN202611067U CN202611067U CN 201220084841 CN201220084841U CN202611067U CN 202611067 U CN202611067 U CN 202611067U CN 201220084841 CN201220084841 CN 201220084841 CN 201220084841 U CN201220084841 U CN 201220084841U CN 202611067 U CN202611067 U CN 202611067U
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- rectangular pyramid
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- lattice structure
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Abstract
The utility model discloses a cable-strut folding grid structure which comprises rectangular pyramid basic units. The rectangular pyramid basic units are connected along the row and the column direction in a horizontal plane. Each of the rectangular pyramid basic units comprises a bottom quadrangle, four edges, a vertex, four oblique compression bars and a central compression bar. The bottom quadrangle is composed of four inhaul cables, the four edges are oblique cables, the upper surfaces of the rectangular pyramid basic units are connected through common edges of the bottom quadrangle, vertexes of the rectangular pyramid basic units are connected through lower chord cables, and an active cable is formed by connection of the oblique cables in the same plane on the rectangular pyramid basic units of each row or each column. The cable-strut folding grid structure enables a system to be a mechanism with no need of reducing the number of components and enables the system to be a structure with no need of increasing the components. Opening and closing of the cable-strut folding grid structure is driven by the inhaul cables so that quantity to be driven is reduced and the cable-strut folding grid structure is capable of being applied to a large-size extensible space structure.
Description
Technical field
The utility model relates to a kind of network that is combined by depression bar and drag-line, and realizes the folding and expansion of network through being provided with of active rope and passive rope.
Background technology
In decades in the past, the various countries scholars have proposed multiple folding network, and it is applied to engineering practice.These folding grids mostly based on scissors than the unit; But it is less that it uses in large-span structure; Main cause has: the general more complicated of design of node of (1) folded net lattice structure still lacks at present the design of node of simple structure and practicality, cheap suitable practical applications; (2) member of folded net lattice structure also receives certain moment of flexure except that receiving a power, and stress performance is not good, and cost is higher; (3) rigidity of folded net lattice structure is very poor, and instructions for use is satisfied in displacement difficulty.For this reason, propose new type foldable network form, enable to be applied to large span and open system such as roof system and seem very necessary.
The rigidity of rope bar tension structure is provided by prestressing force, so can save wide variety of materials; Because its stress attitude is constant, also be the very high system of a kind of structure efficiency in addition.And because rope bar tension structure is made up of high strength rope and depression bar, its quality is less.If as foldable structure, its shrinkage factor is bigger, and the node of its rope bar contact is very simple, so folding rope bar tension structure can apply to large scale developable space structure.
Summary of the invention
In order to overcome the defective of existing folded net lattice structure technology; The utility model provides a kind of rod-cable folded net lattice structure; This folded net lattice structure can not only satisfy each item functional requirement of building to the structure folding and expanding; Also have advantages such as design and easy construction, can satisfy the requirement of large span developable space structure preferably.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of rod-cable folded net lattice structure; It is characterized in that: interconnect at horizontal plane row and column both direction by the rectangular pyramid elementary cell and constitute; Described rectangular pyramid elementary cell is made up of bottom surface quadrangle, four seamed edges, summit, four oblique depression bars and a central depression bar, and described bottom surface quadrangle is made up of four drag-lines, and described four seamed edges are oblique cord; One end of described four oblique depression bars is connected on tetragonal four angles, bottom surface; One end of described central depression bar then is connected on the summit, and the other end of the other end of central depression bar and described four oblique depression bars is hinged, and pin joint is positioned at rectangular pyramid; The upper surface of rectangular pyramid elementary cell is connected through the tetragonal common edge in bottom surface; The summit of rectangular pyramid elementary cell links to each other through last quarter rope, and in all rectangular pyramid elementary cells of described each row or each row, the oblique cord on same plane is connected to an initiatively rope.
Described rectangular pyramid bottom surface quadrangle is rectangle or square.
The equal in length of described four oblique depression bars, and at the intersection point place four depression bars are hinged.
When the drag-line length elongation of drag-line on four seamed edges in the rectangular pyramid elementary cell, elementary cell from stress relieved, form mechanism.And when the drag-line contraction in length of drag-line on four seamed edges, then elementary cell can just change mechanism from stress, the structure that formation can bearing load.
All elementary cells of each row or each row in the folded net lattice structure that the rectangular pyramid elementary cell is assembled into; In the rectangular pyramid elementary cell on same plane on the seamed edge drag-line be connected to an initiatively rope; Through loosening initiatively rope, can network is folding; Tension initiatively rope can launch network.
The beneficial effect of the utility model is, the utility model is made up of high strength rope and depression bar, and its quality is less.Because the single load bearing characteristic of drag-line, the shrinkage factor of structure is bigger, and the node that drag-line contacts with depression bar is simple.In addition, because the rigidity of folded net lattice structure is provided by prestressing force,, reduce deadweight so can save wide variety of materials; And, be the very high system of a kind of structure efficiency because its stress attitude is constant.Rod-cable folded net lattice structure need just can not make system become mechanism through the quantity that reduces member; Just can not make system become structure and equally need not increase member yet.Utilize drag-line to drive the folding of folded net lattice structure, the quantity that can reduce to drive is so rod-cable folded net lattice structure can apply to large scale developable space structure.
Description of drawings
Below in conjunction with accompanying drawing and embodiment to the utility model further explain:
Fig. 1 is a folded net lattice structure sketch map.
Fig. 2 is a rectangular pyramid elementary cell sketch map.
Fig. 3 is a rectangular pyramid elementary cell folding process sketch map.
Fig. 4 is a folded net shell structure sketch map.
Wherein: 1, summit, 2, downhaul, 3, the bottom surface quadrangle, 4, the rope that winds up, 5, oblique cord, 6, oblique depression bar, 7, central depression bar, 8, rope initiatively.
The specific embodiment
With reference to Figure of description, the specific embodiment of the utility model is made more detailed explanation below:
A kind of rod-cable folded net lattice structure comprises: the rectangular pyramid elementary cell of being made up of drag-line and depression bar interconnects at the horizontal plane both direction and constitutes.As shown in Figure 1, the folded net lattice structure all is formed by connecting 6 rectangular pyramid unit at horizontal both direction; The upper surface of rectangular pyramid elementary cell is connected through common edge, and the soffit of folded net lattice structure is linked to each other through last quarter rope 2 by the summit 1 of rectangular pyramid elementary cell,
The profile of described rectangular pyramid elementary cell is a rectangular pyramid; As shown in Figure 2; Each bar limit of this rectangular pyramid bottom surface quadrangle 3 all is designed to bear the drag-line of pulling force, in the folded net lattice structure, is the rope 4 that winds up, and four seamed edges of rectangular pyramid are oblique cord 5; Four of quadrangle 3 summits link to each other through central depression bar 7 with rectangular pyramid summit 1 to the inner intersection point that connects 6, four oblique depression bars of four oblique depression bars of rectangular pyramid from the bottom surface.
Rectangular pyramid shown in Figure 2 bottom surface quadrangle 3 is a square.The equal in length of four oblique depression bars 6, and at the intersection point place four depression bars are hinged.
When the drag-line length elongation of drag-line on four seamed edges in the rectangular pyramid elementary cell, elementary cell from stress relieved, form mechanism.And when the drag-line contraction in length of drag-line on four seamed edges, then elementary cell can just change mechanism from stress, the structure that formation can bearing load.
All elementary cells of each row or each row in the folded net lattice structure that the rectangular pyramid elementary cell is assembled into; Oblique cord 5 is connected to an initiatively rope in the rectangular pyramid elementary cell on same plane; Through loosening initiatively rope, can network is folding; Tension initiatively rope can launch network.Shown in Figure 3 is the folding process of a rectangular pyramid elementary cell.Among the figure shown in the dotted line is active rope 8, and this elementary cell has two initiatively ropes altogether, and in the elementary cell folding process, initiatively rope is constantly to the elementary cell interior slip, and the length that is exposed at the outside initiatively rope of elementary cell is shorter and shorter.
When the length of side of the length of last quarter rope 2 and rectangular pyramid bottom surface respective direction equated, the network of formation was the folding latticed frame structure; When in one direction; The length of last quarter rope 2 is during less than the length of side of rectangular pyramid bottom surface respective direction, and on another direction, the length of side of the length of last quarter rope 2 and rectangular pyramid bottom surface respective direction equates; The network that forms is the folded net shell structure, and is as shown in Figure 4.
Claims (4)
1. rod-cable folded net lattice structure; It is characterized in that: interconnect at horizontal plane row and column both direction by the rectangular pyramid elementary cell and constitute; Described rectangular pyramid elementary cell is made up of bottom surface quadrangle (3), four seamed edges, summit (1), four oblique depression bars (6) and central depression bars (7); Described bottom surface quadrangle (3) is made up of four drag-lines; Described four seamed edges are oblique cord (5), and an end of described four oblique depression bars (6) is connected on four angles of bottom surface quadrangle (3), and an end of described central depression bar (7) then is connected on the summit (1); The other end of central authorities' depression bars (7) and the other end of described four oblique depression bars (6) are hinged; Pin joint is positioned at rectangular pyramid, and the upper surface of rectangular pyramid elementary cell is connected through the common edge of bottom surface quadrangle (3), and the summit of rectangular pyramid elementary cell (1) links to each other through last quarter rope (2); In all rectangular pyramid elementary cells of described each row or each row, the oblique cord on same plane (5) is connected to an initiatively rope (8).
2. rod-cable folded net lattice structure according to claim 1 is characterized in that, described rectangular pyramid bottom surface quadrangle is rectangle or square.
3. rod-cable folded net lattice structure according to claim 1 is characterized in that the equal in length of described four oblique depression bars.
4. rod-cable folded net lattice structure according to claim 1 is characterized in that, the length of described last quarter rope (2) is equal to or less than the length of side of rectangular pyramid bottom surface respective direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220084841 CN202611067U (en) | 2012-03-08 | 2012-03-08 | Cable-strut folding grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220084841 CN202611067U (en) | 2012-03-08 | 2012-03-08 | Cable-strut folding grid structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611067U true CN202611067U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201220084841 Withdrawn - After Issue CN202611067U (en) | 2012-03-08 | 2012-03-08 | Cable-strut folding grid structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605862A (en) * | 2012-03-08 | 2012-07-25 | 东南大学 | Cable-pole type foldable grid structure |
| CN103741796A (en) * | 2013-07-30 | 2014-04-23 | 江河创建集团股份有限公司 | Self-balancing instability-prevention prestress structure |
| CN106088323A (en) * | 2016-06-20 | 2016-11-09 | 东南大学 | A kind of space expandable type grid structure |
| CN115101917A (en) * | 2022-06-27 | 2022-09-23 | 江苏科技大学 | Deployable antenna mechanism based on rectangular bottom surface rectangular pyramid and lightweight networking method |
-
2012
- 2012-03-08 CN CN 201220084841 patent/CN202611067U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605862A (en) * | 2012-03-08 | 2012-07-25 | 东南大学 | Cable-pole type foldable grid structure |
| CN103741796A (en) * | 2013-07-30 | 2014-04-23 | 江河创建集团股份有限公司 | Self-balancing instability-prevention prestress structure |
| CN103741796B (en) * | 2013-07-30 | 2016-02-17 | 江河创建集团股份有限公司 | The anti-unstability prestressed structure of self-balancing |
| CN106088323A (en) * | 2016-06-20 | 2016-11-09 | 东南大学 | A kind of space expandable type grid structure |
| CN115101917A (en) * | 2022-06-27 | 2022-09-23 | 江苏科技大学 | Deployable antenna mechanism based on rectangular bottom surface rectangular pyramid and lightweight networking method |
| CN115101917B (en) * | 2022-06-27 | 2023-08-04 | 江苏科技大学 | Expandable antenna mechanism based on rectangular pyramid with rectangular bottom surface and lightweight networking method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20140528 |
|
| RGAV | Abandon patent right to avoid regrant |