CN101915346A - Miniature flexible disk compression bar - Google Patents
Miniature flexible disk compression bar Download PDFInfo
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- CN101915346A CN101915346A CN2010102245255A CN201010224525A CN101915346A CN 101915346 A CN101915346 A CN 101915346A CN 2010102245255 A CN2010102245255 A CN 2010102245255A CN 201010224525 A CN201010224525 A CN 201010224525A CN 101915346 A CN101915346 A CN 101915346A
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- compression bar
- vertical pole
- flexible disk
- disk compression
- miniature flexible
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- 230000006835 compression Effects 0.000 title claims abstract description 45
- 238000007906 compression Methods 0.000 title claims abstract description 45
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 22
- 238000004080 punching Methods 0.000 abstract 1
- 230000018109 developmental process Effects 0.000 description 16
- 108091092878 Microsatellite Proteins 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000025594 tube development Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
- B64G1/2221—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state characterised by the manner of deployment
- B64G1/2226—Telescoping
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention relates to a miniature flexible disk compression bar, which consists of annular transverse frames, vertical bars and cable-stayed rope. The annular transverse frames are fixedly connected with the vertical bars through M2 bolts, and the adjacent annular transverse frames are connected by the cable-stayed rope; the annular transverse frames consist of four rotary hinges, the four M2 bolts and an annulus supporting piece; the annulus supporting piece are connected with the four rotary hinges through the four M2 bolts respectively; the vertical bars run through punching holes of the four rotary hinges respectively; the vertical bars are made of a hyperelastic amorphous alloy and is subjected to axial tensile compression, lateral bending and torsion through the annular transverse frames and the cable-stayed rope which are connected with the vertical bars; in the process of twining and folding, the vertical bars are buckled to endpoint corners through the rotary hinges; when furled, the vertical bars are bent and twined tightly, compression ratio is large, and the maximum compression ratio can reach 5 percent; and when unfolded, the four continuous vertical bars provide axial bending stiffness and bending strength for an unfolding mechanism. The miniature flexible disk compression bar has practical value and wide application prospect in the field of unfolding mechanisms for aerospace microminiature satellites.
Description
(1) technical field:
The present invention relates to a kind of miniature flexible disk compression bar, aspect civilian, can be used as main supporting mechanisms such as miniature precision instrument, mechanical extending arm, aspect Aero-Space, can be used as main structures such as microsatellite antenna, gravity gradient stabilization.Belong to space flight equipment and equipment technical field.
(2) background technique:
Continuous development along with space technology, the variation of mission requirements, the function of satellite is complicated day by day, volume slowly enlarges, weight progressively increases, and cost is also more and more expensive, and the risk of bearing is increasing, people have invested the microminiature satellite to sight again, and the microminiature satellite mainly has following characteristics: in light weight, volume is little, cost is low, the lead time is short, track is low, emission is easy, vital capacity is strong.But owing to exist contradiction between the volume of microsatellite and the functional diversities, in order to solve this contradiction, accurate microminiature development mechanism arises at the historic moment simultaneously.This development mechanism need shrink at transmitter section, deployable in the space to satisfy mission requirements.
Space development mechanism commonly used mainly contains thin walled tube development mechanism, sleeve development mechanism, hinged development mechanism, coiling development mechanism etc.Thin walled tube development mechanism simple structure, reliability height, can repeat to launch and draw in, but its root warpage limit structural intensity, thereby thermostability, bending resistance and torsional rigidity are lower, are difficult to realize accurate location; Sleeve development mechanism reliability height, can repeat to launch and draw in, the shared volume in back is very big, structure is complicated but draw in; Hinged development mechanism rigidity height, life-span length, good anti-vibration, precision height, but construction process is very complicated, articulating point is many, reliability is relatively low.The common problem that exists of above-mentioned three kinds of development mechanisms is drawn back total complexity in, and it is bigger to draw volume in, is not suitable for the requirement of microsatellite to development mechanism.And coiling development mechanism simple structure, quality is less, reliability is high, magnification is big, and microminiature flexible disk compression bar of the present invention promptly belongs to the coiling development mechanism.
Disk compression bar is a unlimited cylindricality truss, and it is made up of vertical pole, crossbearer and oblique rope rope, draws entire mechanism in by the coiling longeron.Vertical pole is continuous elongate resilient bar, and its length is identical with the length of truss; Crossbearer is perpendicular to the structural member in the longeron plane, is articulated and connected with longeron; The oblique rope rope is the rope in square middle criss-crossing of the every side of mast.
The crossbearer cross section of disk compression bar is generally triangle or three fork-shapeds, but these two kinds of configuration hinge design complexity, volume is bigger, is unfavorable for the miniaturization of development mechanism, so adopted a kind of circular crosssection form, the present invention is a kind of microminiature flexible disk compression bar that adopts the circular crosssection.
(3) summary of the invention:
1, purpose: the purpose of this invention is to provide a kind of miniature flexible disk compression bar, it is the coiling development mechanism of a kind of high magnification, high reliability.
2, technological scheme: see Fig. 1, a kind of miniature flexible disk compression bar of the present invention is made up of annular crossbearer, vertical pole and oblique rope rope.Position annexation between them is: annular crossbearer is connected by M2 screw and vertical pole, and the oblique rope rope links together the adjacent annular crossbearer.
Described annular crossbearer is connected and forms with an annulus supporting element by four uniform rotary hinges, and it provides cross-brace for vertical pole; This annulus supporting element thickness is 2.5-3.5mm, external diameter 68-72mm, and internal diameter 63-67mm, uniform 8 the oblique rope ropes of its upper edge rotary hinge connect unthreaded hole 6A, and 4 M2 screws of its inboard relative set connect unthreaded hole 6B; This rotary hinge is a cylindrical part, and its length is 4-6mm, and external diameter is 3.0-3.5mm, and internal diameter is 1.9-2.1mm, and it is provided with vertical pole attachment hole 4A.The M2 screw passes the annulus supporting element and is connected mutually with vertical pole with rotary hinge, both reached linking to each other with annulus supporting element and hinge, make the position relative fixed of vertical pole and rotary hinge again, having reached rotary hinge simultaneously can be around the purpose of radially rotating with respect to the annulus supporting element.
Described vertical pole is respectively in the perforation of four rotary hinges, this vertical pole material is the superelasticity amorphous alloy, and the cross section is circular, diameter 1.25-1.35mm, length 275-285mm, vertical pole rely on connected annular crossbearer and oblique rope rope to bear axial push-pull, lateral bending and warping force.
Described oblique rope rope is an elastic rope, and the cross section is circular, diameter 0.55-0.65mm, length 88-90mm.Young's modulus is 10.7GPa.
The pitch of adjacent two annular crossbearers determines that according to the rigidity of miniature flexible disk compression bar in the coiling folding process, vertical pole flexing institute to endpoint corners is realized by rotary hinge.Its size of the coiling radius R of miniature flexible disk compression bar (i.e. four vertical pole center line circumradiuses) is by the rigidity decision of this disk compression bar; Vertical pole length is identical with this disk compression bar length of run, processes by having excellent hyperelastic amorphous alloy.Vertical pole coils tightly by bending during gathering, and compression ratio is big, and maximum can reach 5%.Continuous vertical pole provides axial bending rigidity and intensity for this disk compression bar during expansion.The vertical pole diameter is determined according to the rigidity of miniature flexible disk compression bar, coiling radius etc.
Wherein, the quantity of annular crossbearer is five layers;
Wherein, the quantity of vertical pole is four;
Wherein, the coiling radius R of described miniature flexible disk compression bar (i.e. four vertical pole center line circumradiuses) is generally 30～200mm, is designed to 38.5mm;
Wherein, pitch between adjacent two annular crossbearers should satisfy dish when pressing, and geometric constraint is coordinated, and half-section is apart from less than the coiling radius, and oblique rope rope two-end-point distance is greater than distance when drawing in when launching, can derive pitch span R＜t＜2R, be designed to t=70mm.
3, advantage and effect: a kind of miniature flexible disk compression bar of the present invention, its advantage and effect are: realized that with the simplest mechanism form maximal dilation compares, the gathering volume of minimum.The domestic and international coiling formula of studying has hinge development mechanism ubiquity hinge design complexity, problems such as difficult, that the coiling radius is excessive, and weight is heavier is installed at present.The present invention makes the form of hinge simplify more by adopting the simplified design of circular crosssection and hinge, and the coiling radius is littler, has reduced number of spare parts, has simplified assembling layout and detection, has simplified processing technology, has saved cost.Can be used for main supporting structures such as miniature precision instrument, microsatellite antenna, gravity gradient boom, and wide application prospect is all arranged in mechanical structure field.
(4) description of drawings:
Fig. 1 is a deployed configuration schematic representation of the present invention.
Fig. 2 is annular crossbearer schematic representation.
Fig. 3 is the rotary hinge schematic representation.
Fig. 4 is an annulus supporting element schematic representation.
Fig. 5 is a gathering structural representation of the present invention
Concrete label declaration is as follows among the figure:
1---annular crossbearer 2---vertical pole
3---oblique rope rope 4---rotary hinge
4A---vertical pole attachment hole 4B---M2 screw connecting thread hole
5---M2*8 screw 6---annulus supporting element
4 M2 screws connect unthreaded hole to 6A---8 oblique rope ropes connect unthreaded hole 6B---
(5) embodiment:
Below in conjunction with accompanying drawing, design proposal of the present invention is described further.
As shown in Figure 1, a kind of miniature flexible disk compression bar of the present invention, it comprises: five layers of annular crossbearer 1, four vertical poles 2 and oblique rope ropes 3.Position annexation between them is: annular crossbearer 1 is connected by M2*8 screw 5 and four vertical poles 2, and oblique rope rope 3 links together adjacent annular crossbearer 1.
As Fig. 2, described annular crossbearer 1 is made up of four rotary hinges 4, four M2*8 screws 5 and annulus supporting element 6, is the main supporting structure of miniature flexible disk compression bar.
As Fig. 3, described rotary hinge 4 has two attachment holes, is respectively vertical pole attachment hole 4A and M2 screw connecting thread hole 4B.
As Fig. 4,8 oblique rope ropes connection unthreaded hole 6A are connected adjacent annular crossbearer 1 in the described annulus supporting element 6, can improve the anti-shearing and torsional rigidity of miniature flexible disk compression bar; And 4 M2 screws connection unthreaded hole 6B are connected with rotary hinge 4 annulus supporting element 6 by M2*8 screw 5, and three displacements and two rotations of restriction rotary hinge 4 are rotated but do not limit radially.
A kind of miniature flexible disk compression bar of the present invention, the design of key parameter:
1, vertical pole 2 diameter d
According to the requirement of integral rigidity and the mechanical property of material, determine d=1.3mm.
2, vertical pole 2 limit of elasticity flexural strain ε
D is vertical pole 2 diameters in the formula; R is a miniature flexible disk compression bar coiling radius, gets 38.5mm;
Consider the material property and the whole rigidity of vertical pole 2, choose vertical pole limit of elasticity flexural strain ε=0.017.
3, miniature flexible disk compression bar draws height h in
h＝5a
A is an annulus supporting element thickness, is 3mm, therefore draws height h=15mm in.
4, the length that vertical pole is set is 280mm, then the magnification of miniature flexible disk compression bar
μ＝h/L＝15/280＝5.36％
Claims (8)
1. miniature flexible disk compression bar, it is characterized in that: it is made up of annular crossbearer, vertical pole and oblique rope rope; Position annexation between them is: annular crossbearer is connected by M2 screw and vertical pole, and the oblique rope rope links together the adjacent annular crossbearer;
Described annular crossbearer is connected and forms with an annulus supporting element by four uniform rotary hinges, and it provides cross-brace for vertical pole; Uniform 8 the oblique rope ropes of its upper edge rotary hinge of this annulus supporting element connect unthreaded hole, and 4 M2 screws of its inboard relative set connect unthreaded hole; This M2 screw passes the annulus supporting element and is connected mutually with vertical pole with rotary hinge, has both made the position relative fixed of vertical pole and rotary hinge, and having reached rotary hinge again can be around the purpose of radially rotating with respect to the annulus supporting element;
In the perforation of four rotary hinges, this vertical pole material is the superelasticity amorphous alloy to described vertical pole respectively, and the cross section is circular, and vertical pole relies on connected annular crossbearer and oblique rope rope to bear axial push-pull, lateral bending and warping force;
Described oblique rope rope is an elastic rope, and the cross section is circular, and Young's modulus is 10.7GPa;
The coiling radius R of this miniature flexible disk compression bar i.e. four vertical pole center line circumradiuses, and its size is by the rigidity decision of this disk compression bar; The pitch of adjacent two annular crossbearers also is to determine according to this disk compression bar rigidity; In the coiling folding process, vertical pole flexing institute to endpoint corners is realized by rotary hinge; Vertical pole length is identical with this disk compression bar length of run, processes by having excellent hyperelastic amorphous alloy; Vertical pole coils tightly by bending during gathering, and compression ratio is big; Continuous vertical pole provides axial bending rigidity and intensity for this disk compression bar during expansion.
2. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: the thickness of this annulus supporting element is 2.5-3.5mm, and external diameter is 68-72mm, and internal diameter is 63-67mm.
3. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: this vertical pole diameter is 1.25-1.35mm, and length is 275-285mm, and quantity is four.
4. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: the quantity of this annular crossbearer is five layers.
5. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: the diameter of this oblique rope rope is 0.55-0.65mm, and length is 88-90mm.
6. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: this rotary hinge is a cylindrical part, and its length is 4-6mm, and external diameter is 3.0-3.5mm, and internal diameter is 1.9-2.1mm, and it is provided with the vertical pole attachment hole.
7. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: the coiling radius R of this miniature flexible disk compression bar i.e. span of four vertical pole center line circumradiuses is 30～200mm.
8. a kind of miniature flexible disk compression bar according to claim 1 is characterized in that: the pitch span between these adjacent two annular crossbearers is R＜t＜2R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102245255A CN101915346A (en) | 2010-07-02 | 2010-07-02 | Miniature flexible disk compression bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102245255A CN101915346A (en) | 2010-07-02 | 2010-07-02 | Miniature flexible disk compression bar |
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| Publication Number | Publication Date |
|---|---|
| CN101915346A true CN101915346A (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102245255A Pending CN101915346A (en) | 2010-07-02 | 2010-07-02 | Miniature flexible disk compression bar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565987A (en) * | 2012-01-20 | 2012-07-11 | 中国科学院上海技术物理研究所 | Space large-caliber extensible shading cover structure |
| WO2021037787A1 (en) * | 2019-08-29 | 2021-03-04 | University Of Limerick | Deployable structures |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085018A (en) * | 1989-07-19 | 1992-02-04 | Japan Aircraft Mfg., Co., Ltd. | Extendable mast |
| JPH05221392A (en) * | 1992-02-12 | 1993-08-31 | Uchu Tsushin Kiso Gijutsu Kenkyusho:Kk | Unfolding truss structure |
| CN1418979A (en) * | 2002-12-17 | 2003-05-21 | 哈尔滨工业大学 | Multicomponent large block non-crystal alloy material with large overcold liquid phase area and high thermal stability |
| EP1593597A1 (en) * | 2004-05-06 | 2005-11-09 | EADS Astrium GmbH | Deployable or extendible structure with flexible longerons and supporting elements |
| CN101124116A (en) * | 2004-12-28 | 2008-02-13 | 阿尔卡特公司 | Device for supporting elements of a spacecraft equipment with flexible deployable blades |
| CN101428690A (en) * | 2008-12-18 | 2009-05-13 | 北京航空航天大学 | Swirl type triangle crossarm hinge space extending arm |
-
2010
- 2010-07-02 CN CN2010102245255A patent/CN101915346A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085018A (en) * | 1989-07-19 | 1992-02-04 | Japan Aircraft Mfg., Co., Ltd. | Extendable mast |
| JPH05221392A (en) * | 1992-02-12 | 1993-08-31 | Uchu Tsushin Kiso Gijutsu Kenkyusho:Kk | Unfolding truss structure |
| CN1418979A (en) * | 2002-12-17 | 2003-05-21 | 哈尔滨工业大学 | Multicomponent large block non-crystal alloy material with large overcold liquid phase area and high thermal stability |
| EP1593597A1 (en) * | 2004-05-06 | 2005-11-09 | EADS Astrium GmbH | Deployable or extendible structure with flexible longerons and supporting elements |
| CN101124116A (en) * | 2004-12-28 | 2008-02-13 | 阿尔卡特公司 | Device for supporting elements of a spacecraft equipment with flexible deployable blades |
| CN101428690A (en) * | 2008-12-18 | 2009-05-13 | 北京航空航天大学 | Swirl type triangle crossarm hinge space extending arm |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565987A (en) * | 2012-01-20 | 2012-07-11 | 中国科学院上海技术物理研究所 | Space large-caliber extensible shading cover structure |
| WO2021037787A1 (en) * | 2019-08-29 | 2021-03-04 | University Of Limerick | Deployable structures |
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Application publication date: 20101215 |