CN105474781B - The Weak link device of the flexible thin-walled tube of spacecraft - Google Patents
The Weak link device of the flexible thin-walled tube of spacecraftInfo
- Publication number
- CN105474781B CN105474781B CN201010047591XA CN201010047591A CN105474781B CN 105474781 B CN105474781 B CN 105474781B CN 201010047591X A CN201010047591X A CN 201010047591XA CN 201010047591 A CN201010047591 A CN 201010047591A CN 105474781 B CN105474781 B CN 105474781B
- Authority
- CN
- China
- Prior art keywords
- walled tube
- flexible thin
- back bracket
- flexible
- spacecraft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention relates to the Weak link device of the flexible thin-walled tube of spacecraft, this device is made up of four leg back bracket, flexible gasket, cross spacing bar, longitudinal spacing sheet, it is characterized in that four leg back bracket are for " four leg formulas " thin-walled part, are connected with connected piece by the mode of glueing joint or be spirally connected; Located lateral bar is screw rod, and the cross spacing hole through flexible thin-walled tube is connected with four leg back bracket; Longitudinal spacing sheet, through the longitudinal spacing hole of flexible thin-walled tube, utilizes limit opening pin to be connected with four leg back bracket; In order to reduce the impact of connected piece to flexible thin-walled tube, place flexible gasket at the back of four leg back bracket.The invention solves flexible thin-walled tube when there is section deformation cannot with the problem such as 90 of connected piece degree are connected, have that structure is simple, quality is light, reliability is high, low cost and other advantages.<pb pnum="1" />
Description
Technical field
The present invention relates to spacecraft general technical field, be specifically related to a kind of Weak link device for large scale space structure.
Background technology
Be currently available for the connection mode of the flexible thin-walled tubular construction of the large scales such as space antenna, solar array, solar energy sailboard, solar protection cover, space habitation module, mainly add hard joint in its end, realize the connection with other structure by hard joint.The subject matter adopting hard joint to carry out anatomical connectivity is: when flexible thin-walled tube draws in, more close to the hard joint of structure end, the change of structural section shape is more not obvious, causes producing a large amount of folds at the regional area close to hard joint, and concentrates with obvious stress; Through repeatedly drawing in, this kind of local damage will affect the precision of expansion of flexible structure after expansion process, even cause structural damage, inefficacy.Thin-walled tube structure reels when Spacecraft Launch, enter the orbit after launch, it draws main himself cross section of change that relies in and realizes curling, but when flexible thin-walled tube section changes, will the connection of flexible thin-walled tube and other framing member be had influence on, cause thus and connect damage.
Connecting Problems existing for solving above-mentioned flexible thin-walled tube, the method for attachment of structure zero damage need be adopted.
Summary of the invention
In order to solve the problem such as local damage, gathering difficulty existed when flexible thin-walled tube adopts hard joint to connect, the invention provides the Weak link device of the flexible thin-walled tube of a kind of spacecraft.This device is made up of four leg back bracket, flexible gasket, cross spacing bar, longitudinal spacing sheet, and four described leg back bracket are " four leg formulas " thin-walled part, are connected with connected piece by the mode of glueing joint or be spirally connected; Described cross spacing bar is screw rod, and the cross spacing hole through flexible thin-walled is connected with four leg back bracket; Described longitudinal spacing sheet, through the longitudinal spacing hole of flexible thin-walled tube, utilizes limit opening pin to be connected with four leg back bracket; In order to reduce the impact of connected piece to flexible thin-walled tube, place flexible gasket at the back of four leg back bracket.
The present invention, owing to taking above-mentioned technical scheme, achieves the beneficial effects such as structure is simple, easy to operate, reliability is high, cost is low.
Accompanying drawing explanation
Fig. 1 is the Weak link device schematic diagram of the flexible thin-walled tube of spacecraft of the present invention
Fig. 2 is the Weak link device schematic diagram in spacecraft of the present invention flexible thin-walled tube section deformation process
The Weak link device schematic diagram of Fig. 3 when to be that the flexible thin-walled tube of spacecraft of the present invention is curling draw in
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described.
Fig. 1 is the Weak link device schematic diagram of the flexible thin-walled tube of spacecraft of the present invention, and shown in embodiment as shown in Figure 1, this device comprises four leg back bracket, flexible gasket, cross spacing bar, longitudinal spacing sheet.Above-mentioned Weak link device can realize flexible thin-walled tube and be connected with 90 degree of connected piece when there is changes of section.Four leg back bracket are connected with connected piece by the mode of glueing joint or be spirally connected, and four leg back bracket " four legs " place has through hole, can provide the connection with flexible thin-walled tube.Flexible thin-walled tube has four spacing holes, and cross spacing bar fixes the cross spacing that can realize flexible thin-walled tube through upper and lower Liang Ge spacing hole with four leg back bracket, cross spacing bar and being positioned by stop nut with four leg back bracket; Longitudinal spacing sheet fixes the longitudinal spacing that can realize flexible thin-walled tube through left and right Liang Ge spacing hole and four leg back bracket, longitudinal spacing sheet and being positioned by limit opening pin with four leg back bracket.As shown in Figure 1, flexible thin-walled tube [1], after transverse direction, longitudinal spacing, achieves the Weak link with connected piece.Flexible gasket can effectively improve the flexible thin-walled tube after Weak link be subject to connected piece apply axial load time the anti-flexion capabilities in local.
Fig. 2 is the Weak link device schematic diagram in spacecraft of the present invention flexible thin-walled tube section deformation process.As shown for example in fig. 2, flexible thin-walled tube need carry out when launching drawing in reduce transmitting volume by the spacecraft plane framework that Weak link device and connected piece are connected to form, concrete grammar is flattened by flexible thin-walled tube, in flexible thin-walled tube applanation process, its cross section vertical scale transversely position-limited lever reduces, and cross section breadth wise dimension longitudinally banking stop increase gradually, until flexible thin-walled tube flattens completely.
The Weak link device schematic diagram of Fig. 3 when to be that the flexible thin-walled tube of spacecraft of the present invention is curling draw in.As shown in Figure 3, can carry out curling under external force, until draw in completely by the flexible thin-walled tube after Fig. 2 pressing.
The present invention is that flexible thin-walled tube and connected piece provide effective connection, ensures that flexible thin-walled tube is avoided flexing phenomenon occurs simultaneously, has that structure is simple, quality is light, reliability is high, low cost and other advantages.Weak link device of the flexible thin-walled tube of spacecraft of the present invention and attaching method thereof can be applicable to the connection of the flexible thin-walled tube of spacecraft and other flexible structure or rigid construction, provides a kind of actv. technological approaches for building the space deployable structures such as space antenna, solar array, solar energy sailboard, solar protection cover, space habitation module.
Claims (4)
1. the Weak link device of the flexible thin-walled tube of spacecraft, it is characterized in that, this device is made up of four leg back bracket [3], flexible gasket [4], cross spacing bar [5], longitudinal spacing sheet [8], four described leg back bracket [3] are " four leg formulas " thin-walled part, are connected by mode and the connected piece [2] gluedd joint or be spirally connected; Described cross spacing bar [5] is screw rod, through the cross spacing hole of flexible thin-walled tube [1], utilizes nut [6,7] to be connected with four leg back bracket [3]; Described longitudinal spacing sheet [8], through the longitudinal spacing hole of flexible thin-walled tube [1], utilizes limit opening pin [9,10] to be connected with four leg back bracket [3]; In order to reduce the impact of connected piece to flexible thin-walled tube [1], place flexible gasket at the back of four leg back bracket [4].
2. the Weak link device of the flexible thin-walled tube of spacecraft as claimed in claim 1, it is characterized in that, described flexible thin-walled tube [1] when there is changes of section is 90 degree with connected piece [2] and is connected.
3. the Weak link device of the flexible thin-walled tube of spacecraft as claimed in claim 1, is characterized in that, four described leg back bracket [3] and the connection mode of connected piece [2] are the combination of one or both modes of glueing joint, being spirally connected.
4. the Weak link device of the flexible thin-walled tube of spacecraft as claimed in claim 1, is characterized in that, described flexible gasket [4] is rubber bodies, more than one or both modes in cavernous body, inflatable packer combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010047591XA CN105474781B (en) | 2010-02-10 | 2010-02-10 | The Weak link device of the flexible thin-walled tube of spacecraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010047591XA CN105474781B (en) | 2010-02-10 | 2010-02-10 | The Weak link device of the flexible thin-walled tube of spacecraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105474781B true CN105474781B (en) | 2013-11-13 |
Family
ID=55642148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010047591XA Active CN105474781B (en) | 2010-02-10 | 2010-02-10 | The Weak link device of the flexible thin-walled tube of spacecraft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105474781B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584438A (en) * | 2017-01-24 | 2017-04-26 | 重庆大学 | Prestress conical thin-wall three-rod parallel type space unfolding mechanism for spacecraft |
-
2010
- 2010-02-10 CN CN201010047591XA patent/CN105474781B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584438A (en) * | 2017-01-24 | 2017-04-26 | 重庆大学 | Prestress conical thin-wall three-rod parallel type space unfolding mechanism for spacecraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR03 | Grant of secret patent right | ||
| GRSP | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DCSP | Declassification of secret patent |