CN202611061U - Rope-rod type extensible structure - Google Patents
Rope-rod type extensible structure Download PDFInfo
- Publication number
- CN202611061U CN202611061U CN 201220084572 CN201220084572U CN202611061U CN 202611061 U CN202611061 U CN 202611061U CN 201220084572 CN201220084572 CN 201220084572 CN 201220084572 U CN201220084572 U CN 201220084572U CN 202611061 U CN202611061 U CN 202611061U
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- rectangular pyramid
- quadrangle
- octahedra
- elementary cell
- rope
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Abstract
The utility model discloses a rope-rod type extensible structure, which is formed by mutually connecting octahedron basic units consisting of pull ropes and pressing rods in two directions on a horizontal panel, wherein each octahedron basic unit consists of an upper rectangular pyramid and a lower rectangular pyramid which share the same bottom face; four edges of a quadrangle at the bottom face of each rectangular pyramid are the pull ropes which only bear tension; four edges of the upper rectangular pyramid are four upwards inclined ropes; four edges of the lower rectangular pyramid are four downwards inclined ropes; four vertexes of the quadrangle at the bottom face of each rectangular pyramid are connected with four horizontal pressing rods towards the central point of the quadrangle; an intersection of the four horizontal pressing rods is connected with the vertex of the upper rectangular pyramid through the first vertical pressing rod and is also connected with the vertex of the lower rectangular pyramid through the second vertical pressing rod; two adjacent octahedron basic units are connected with each other through the vertexes of the quadrangles at the bottom faces of the rectangular pyramids, so that the octahedron basic units are spliced to form all basic units in each row and each column in the extensible structure; and the upwards inclined ropes on the same plane are connected to form an active rope.
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
Deployable structure is a kind of new structure that closely grows up for more than half a century, plays an important role in fields such as aerospace, building structure and military engineerings.The principal character of deployable structure is to have two kinds of stable configurations: the complete folded state and the state of organizing work fully.When folded state, structure is drawn at a certain given shape, and under the effect of extraneous driving force, structure is progressively launched, and reaches the duty of launching fully, is locked as stable state then.
In decades in the past, the various countries scholars have proposed multiple deployable structure form, and it is applied to engineering practice.In these form of structure; Study the most deep; Use and be based on the folded net lattice structure of scissors the most widely than the unit; But it is less that it uses in large-span structure, and 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 the rod-cable deployable structure can apply to large scale developable space structure.
Summary of the invention
In order to overcome the defective of existing deployable structure technology; The utility model provides a kind of rod-cable deployable structure; This deployable structure can not only satisfy the requirement of each item functions such as 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 deployable structure is characterized in that: the octahedra elementary cell of being made up of drag-line and depression bar interconnects at the horizontal plane both direction and constitutes; The profile of described octahedra elementary cell is an octahedron; Two rectangular pyramids up and down by having identical bottom surface are formed; This tetragonal four edges in rectangular pyramid bottom surface is made up of the drag-line that only bears pulling force; Four seamed edges of last rectangular pyramid are four upward oblique cords, and four seamed edges of following rectangular pyramid are four following oblique cords, and tetragonal four summits connect four horizontal struts to the quadrangle central point from the rectangular pyramid bottom surface; The intersection point of four horizontal struts links to each other through the first vertical depression bar with last rectangular pyramid summit, and the intersection point of four horizontal struts links to each other through the second vertical depression bar with following rectangular pyramid summit; Adjacent octahedra elementary cell links to each other through its tetragonal summit, rectangular pyramid bottom surface; And form on quadrangle summit, adjacent rectangular pyramid bottom surface to be connected with between new tetragonal diagonal angle and be used to prevent the steadying line that rotates between level; The upper surface of deployable structure is connected through the rope that winds up by the last summit of octahedra elementary cell, and the soffit of deployable structure is connected through last quarter rope by the following summit of octahedra elementary cell; All elementary cells of each row and each row in the deployable structure that octahedra elementary cell is assembled into, oblique cord is connected to an initiatively rope on the same plane.
When going up the elongation of oblique cord length in the octahedra elementary cell, elementary cell from stress relieved, form mechanism.And when last oblique cord contraction in length, then elementary cell can just change mechanism from stress, the structure that formation can bearing load,
All elementary cells of each row and each row in the deployable structure that octahedra elementary cell is assembled into, oblique cord is connected to an initiatively rope on the same plane, through loosening initiatively rope, can structure is folding; Tension initiatively rope can launch network.
Described rectangular pyramid bottom surface quadrangle is rectangle or square.
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 rod-cable deployable 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.And the utility model 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 deployable structure, the quantity that can reduce to drive is so the rod-cable deployable 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.
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 deployable structure comprises: the octahedra 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, deployable structure all is formed by connecting 3 octahedra elementary cells at horizontal both direction
The profile of described octahedra elementary cell is an octahedron; As shown in Figure 2; Two rectangular pyramids up and down by having identical bottom surface are formed, and each bar limit of this rectangular pyramid bottom surface quadrangle 1 all is designed to bear the drag-line 2 of pulling force, and four seamed edges of last rectangular pyramid are four and go up oblique cord 3; Four seamed edges of following rectangular pyramid are four following oblique cords 14; Four of quadrangle 1 summits 4 link to each other through the first vertical depression bar 7 with last rectangular pyramid summit 6 to the intersection point that the quadrangle central point connects 5, four horizontal struts 5 of four horizontal struts from the bottom surface, and the intersection point of four horizontal struts 5 links to each other through the second vertical depression bar 9 with following rectangular pyramid summit 8; Described rectangular pyramid bottom surface quadrangle 1 can be rectangle or square, and rectangular pyramid shown in Figure 2 bottom surface quadrangle 1 is a square.
Adjacent octahedra elementary cell links to each other through the summit 4 of its rectangular pyramid bottom surface quadrangle 1; And between the non-conterminous angle of the new quadrangle 10 of quadrangle summit, adjacent rectangular pyramid bottom surface 4 formation, be connected with steadying line 11; Be used to prevent the rotation between level; The upper surface of deployable structure is connected through the rope 12 that winds up by the last summit 6 of octahedra elementary cell, and its soffit is connected through last quarter rope 13 by the following summit 8 of octahedra elementary cell
The equal in length of described four horizontal struts, and at the intersection point place four depression bars are hinged,
When going up the elongation of oblique cord 3 length in the octahedra elementary cell, elementary cell from stress relieved, form mechanism.And when last oblique cord 3 contraction in lengths, then elementary cell can just change mechanism from stress, the structure that formation can bearing load,
All elementary cells of each row and each row in the deployable structure that octahedra elementary cell is assembled into, oblique cord 3 is connected to an initiatively rope on the same plane, through loosening initiatively rope, can structure is folding; Tension initiatively rope can launch network.Shown in Figure 3 is the folding process of an octahedra elementary cell.Among the figure shown in the dotted line is the active rope, 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.
Claims (3)
1. rod-cable deployable structure is characterized in that: the octahedra elementary cell of being made up of drag-line and depression bar interconnects at the horizontal plane both direction and constitutes;
The profile of described octahedra elementary cell is an octahedron; Two rectangular pyramids up and down by having identical bottom surface are formed; The four edges of this rectangular pyramid bottom surface quadrangle (1) is made up of the drag-line that only bears pulling force (2), and four seamed edges of last rectangular pyramid are four and go up oblique cord (3) that four seamed edges of following rectangular pyramid are four following oblique cords (14); Four summits (4) of quadrangle (1) connect four horizontal struts (5) to quadrangle (1) central point from the rectangular pyramid bottom surface; The intersection point of four horizontal struts (5) links to each other through the first vertical depression bar (7) with last rectangular pyramid summit (6), and the intersection point of four horizontal struts (5) links to each other through the second vertical depression bar (9) with following rectangular pyramid summit (8)
Adjacent octahedra elementary cell links to each other through the summit (4) of its rectangular pyramid bottom surface quadrangle (1); And form on quadrangle summit, adjacent rectangular pyramid bottom surface (4) to be connected with between the diagonal angle of new quadrangle (10) and be used to prevent the steadying line (11) that rotates between level; The upper surface of deployable structure is connected through the rope that winds up (12) by the last summit (6) of octahedra elementary cell; The soffit of deployable structure is connected through last quarter rope (13) by the following summit (8) of octahedra elementary cell
All elementary cells of each row and each row in the deployable structure that octahedra elementary cell is assembled into, oblique cord (3) is connected to an initiatively rope on the same plane.
2. rod-cable deployable structure according to claim 1 is characterized in that, described rectangular pyramid bottom surface quadrangle is rectangle or square.
3. rod-cable deployable structure according to claim 1 is characterized in that, the equal in length of described four horizontal struts, and at the intersection point place four depression bars are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220084572 CN202611061U (en) | 2012-03-08 | 2012-03-08 | Rope-rod type extensible structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220084572 CN202611061U (en) | 2012-03-08 | 2012-03-08 | Rope-rod type extensible structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611061U true CN202611061U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220084572 Withdrawn - After Issue CN202611061U (en) | 2012-03-08 | 2012-03-08 | Rope-rod type extensible structure |
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| Country | Link |
|---|---|
| CN (1) | CN202611061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605887A (en) * | 2012-03-08 | 2012-07-25 | 东南大学 | Cable-pole type deployable structure |
| CN103498511A (en) * | 2013-10-22 | 2014-01-08 | 常州工学院 | Double-layer fold-line-shaped large-span tension structure |
-
2012
- 2012-03-08 CN CN 201220084572 patent/CN202611061U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605887A (en) * | 2012-03-08 | 2012-07-25 | 东南大学 | Cable-pole type deployable structure |
| CN102605887B (en) * | 2012-03-08 | 2014-06-04 | 东南大学 | Cable-pole type deployable structure |
| CN103498511A (en) * | 2013-10-22 | 2014-01-08 | 常州工学院 | Double-layer fold-line-shaped large-span tension structure |
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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: 20140604 |
|
| RGAV | Abandon patent right to avoid regrant |