CN109131951A - A kind of spatial radial unlocking mechanism driven by marmem SMA tow - Google Patents
A kind of spatial radial unlocking mechanism driven by marmem SMA tow Download PDFInfo
- Publication number
- CN109131951A CN109131951A CN201811019942.9A CN201811019942A CN109131951A CN 109131951 A CN109131951 A CN 109131951A CN 201811019942 A CN201811019942 A CN 201811019942A CN 109131951 A CN109131951 A CN 109131951A
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- CN
- China
- Prior art keywords
- sma
- fixed frame
- tow
- outer cover
- memory alloy
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- 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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Classifications
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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
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
-
- 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
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/645—Separators
Abstract
The present invention proposes a kind of spatial radial unlocking mechanism driven by marmem SMA tow, the shield base of the mechanism is fixed with pedestal and top is equipped with upper cover, bolt is inserted into from the through-hole of upper cover and is located above jacking block, bolt periphery is cased with locating piece and two points of valve nuts, the periphery setting of two points of valve nuts is fluted, rigid clip is arranged in the groove of two points of valve nuts and is provided at the closure of end " H " type fixed frame, and SMA shape-memory alloy wire beam is centered around rigid clip periphery and is fixed on fixed frame.It is larger to solve spatial radial unlocking mechanism impact in the prior art, the problem of driving force is small, and the kinematic accuracy of ball is difficult to ensure provides a kind of spatial radial unlocking mechanism driven by marmem SMA tow, using marmem SMA tow radial drive mode, with low impact, drive displacement is big, and driving precision is high, unlocked time is short, kinematic accuracy is high, low friction, free of contamination advantage.
Description
Technical field
The present invention relates to a kind of spatial radial unlocking mechanisms driven by SMA tow, belong to aerospace system unlocking structure neck
Domain.
Background technique
After satellite launch, many auxiliary equipments such as antenna, solar energy sailboard requires to be successfully separated from parent, so as to smoothly complete
At its in-orbit task, most of release devices are Fire load, and action time is short, small in size, and lesser energy input is that its is excellent
Gesture, however these release devices easily cause higher shock loading and space-pollution, processing cost is huge, it is therefore desirable to grind
Study carefully a kind of separator that can replace traditional Fire load, it is low shock loading compared with the advantage of Fire load, it is pollution-free,
It is reusable.
Due to the unique shape-memory properties of marmem SMA, under deformation condition, when temperature is more than its corresponding phase
When temperature, its original-shape can be restored, this recovery deformation can repeat under certain condition, although maximum recovery strain
8% can be reached, but the displacement of its linear drives is small, it is low as driving source service precision.Existing spatial radial unlocking mechanism is more
Using linear drives, impact is larger, and driving force is small, and the kinematic accuracy of ball is difficult to ensure, the present invention uses marmem
SMA radial drive mode has low impact, and drive displacement is big, and driving precision is high, and unlocked time is short, and kinematic accuracy is high, low to rub
It wipes, free of contamination advantage.
Summary of the invention
Object of the present invention is to larger to solve spatial radial unlocking mechanism impact in the prior art, driving force is small, ball
Kinematic accuracy the problem of being difficult to ensure, a kind of spatial radial unlocking mechanism driven by marmem SMA tow is provided,
Using marmem SMA tow radial drive mode, there is low impact, drive displacement is big, and driving precision is high, unlocked time
Short, kinematic accuracy is high, low friction, free of contamination advantage.
The present invention is for this purpose, using following technical scheme:
It is of the present invention by marmem SMA tow driving spatial radial unlocking mechanism include pedestal, outer cover,
Bushing, compressed spring, two points of valve nuts, rigid clip, fixed frame, locating piece, jacking block, SMA shape-memory alloy wire beam, on
Lid and bolt；The outer cover is cylindrical shape, is provided with opening on the side wall of the outer cover, the fixed mount setting is in outer cover
Opening, the outer cover are lined with bushing, and the bottom of the outer cover is fixed with pedestal, is equipped with upper cover at the top of the outer cover,
And the upper cover is provided centrally with through-hole, the compressed spring is fixed on pedestal, the jacking block is fixed on compressed spring
Top, the bolt are inserted into from the through-hole of upper cover and are located at the top of jacking block, and the periphery of the bolt is cased with locating piece and two
Divide valve nut, the locating piece is located between upper cover and two points of valve nuts, divides the periphery of valve nut to be provided with described in two recessed
Slot, the rigidity clip are arranged in the groove of two points of valve nuts, are provided with " H " type at the end closure of the rigidity clip
Fixed frame, the both ends of the fixed frame are integrally formed with the two ends of rigid clip respectively, and the both ends of the fixed frame are set respectively
It is equipped with mounting hole, the SMA shape-memory alloy wire beam is centered around the periphery of rigid clip and is fixed on fixation by mounting hole
On frame, it is additionally provided with power device on the fixed frame, is used for SMA shape-memory alloy wire Shu Tong electricity.
Preferably, the SMA shape-memory alloy wire beam includes four SMA shape-memory alloy wires.
The working principle of spatial radial unlocking mechanism of the present invention by the driving of marmem SMA tow are as follows:
Described point of valve nut is matched with rigid clip, in locking state, due to dividing valve nut by rigid clip and
The radial constraint of fixed frame acts on, and limits its radial motion, limits the radial release of point valve nut；In unlocked state
Under, it is powered simultaneously to four SMA shape-memory alloy wires, SMA shape-memory alloy wire will pull rigid clip and fixed frame edge
Radial motion is relieved to the radial constraint for dividing valve nut, since compressed spring has axial compressive force, driving top to jacking block effect
Block moves upwards, and valve nut is divided to carry out radial separation under the action of jacking block, and bolt is unlocked release.
Spatial radial unlocking mechanism of the present invention by the driving of marmem SMA tow has the beneficial effect that
(1), the present invention uses SMA shape-memory alloy wire, right since power supply is to the synchronous electrified regulation of four alloy wires
Rigid clip applies radial release force, ensure that the synchronism for releasing the radial constraint of rigid clip and fixed frame, such design
Unlock precision can be greatly improved.
(2), four SMA shape-memory alloy wires of the invention using binding mode and divide the optimization of valve nut to assemble, energy
The driving angular displacement and driving force for enough guaranteeing SMA, greatly reduce unlocked time, increase coupling mechanism force.
(4), the present invention uses marmem SMA radial drive mode, has low impact, and drive displacement is big, driving
Precision is high, and unlocked time is short, and kinematic accuracy is high, low friction, free of contamination advantage.
Detailed description of the invention
Fig. 1 is the spatial radial unlocking mechanism schematic diagram of the present invention driven by marmem SMA tow；
Fig. 2 is the spatial radial unlocking mechanism locking state of the present invention driven by marmem SMA tow
Cross-sectional view；
Fig. 3 is the SMA shape of the spatial radial unlocking mechanism of the present invention by the driving of marmem SMA tow
The structural schematic diagram of memorial alloy tow and rigid clip cooperation；
In figure: 1- pedestal；2- outer cover；3- bushing；4- compressed spring；5- divides valve nut；6- fixed frame；7- locating piece；8-
Jacking block；9-SMA shape-memory alloy wire；10- upper cover；11- bolt.
Specific embodiment
Technical solution of the present invention is further illustrated below with reference to the accompanying drawings and specific embodiments.
Specific embodiment one illustrates present embodiment referring to figures 1-3, is driven described in present embodiment by SMA tow
Dynamic spatial radial unlocking mechanism includes pedestal 1, outer cover 2, bushing 3,4, two points of valve nuts 5 of compressed spring, rigid clip, consolidates
Determine frame 6, locating piece 7, jacking block 8, SMA shape-memory alloy wire beam, upper cover 10 and bolt 11；The outer cover 2 is cylindrical shape, institute
It states and is provided with opening on the side wall of outer cover 2, the opening of outer cover 2 is arranged in the fixed frame 6, and the outer cover 2 is lined with bushing
3, the bottom of the outer cover 2 is fixed with pedestal 1, and the top of the outer cover 2 is equipped with upper cover 10, and the center of the upper cover 10 is set
It is equipped with through-hole, the compressed spring 4 is fixed on pedestal 1, and the jacking block 8 is fixed on the top of compressed spring 4, the bolt 11
The top of jacking block 8 is inserted into and is located at from the through-hole of upper cover 10, and the periphery of the bolt 11 is cased with locating piece 7 and two points of valve nuts
5, the locating piece 7 is located between upper cover 10 and two points of valve nuts 5, divides the periphery of valve nut 5 to be arranged described in two fluted,
The rigidity clip is arranged in the groove of two points of valve nuts 5, and it is solid to be provided with " H " type at the end closure of the rigidity clip
Determine frame 6, the both ends of the fixed frame 6 are integrally formed with the two ends of rigid clip respectively, and the both ends of the fixed frame 6 are set respectively
It is equipped with mounting hole, the SMA shape-memory alloy wire beam is centered around the periphery of rigid clip and is fixed on fixation by mounting hole
On frame 6, it is additionally provided with power device on the fixed frame 6, is used for SMA shape-memory alloy wire Shu Tong electricity.
Each component of the spatial radial unlocking mechanism driven by SMA tow is all made of light alloy, guarantees mechanism
Whole lightweight.
The fixed frame 6 is " H " type, for fixed rigid clip and SMA shape-memory alloy wire beam, when SMA shape is remembered
When recalling the energization of alloy tow, the pulling force of SMA shape-memory alloy wire beam is greater than the radial drive power of rigid clip, rigid shell ring
Unlocking process is completed along two sides radial motion in the both ends of dynamic fixed frame 6.
It is provided with opening on the outer cover 2, there is guiding role to fixed frame 6, guarantees that the unlock of fixed frame 6 is radially transported
It is dynamic, guarantee the unlock precision of structure.
The SMA shape-memory alloy wire beam includes four SMA shape-memory alloy wires 9.The SMA marmem
The radical of silk 9 is more, and unlocking mechanism unlock is faster, and specific radical can be adjusted according to the actual situation.
The function of the spatial radial unlocking mechanism of the present invention driven by SMA tow realizes that process includes following step
It is rapid:
1) (SMA tow is not powered on) in locking state, due to dividing valve nut 5 by rigid clip and fixed frame 6
Radial constraint effect, limits its radial motion, limits the radial release of point valve nut 5；
2) in the unlocked state, to SMA shape-memory alloy wire Shu Tong electricity, since SMA has shape memory effect, and it is special
Different mechanical mechanics property, the angular displacement for generating recovery demand simultaneously, can also be with very big radial drive power, the driving force
Greater than rigid clip and fixed frame 6 to the radial constraint for dividing valve nut 5, four SMA shape-memory alloy wires 9 are pulled just at this time
Property clip and fixed frame 6 are radially movable, relieve to the radial constraint for dividing valve nut 5, since compressed spring 4 is to jacking block 8
Effect has axial compressive force, and driving jacking block 8 moves upwards, and valve nut 5 is divided to carry out radial separation, bolt under the action of jacking block 8
11 are unlocked release.
Although the present invention is disclosed with specific data and embodiment, it is not intended to limit the invention, any ripe
The people for knowing this technology is not departing from essential scope of the invention, can make parameter modification appropriate, therefore guarantor of the invention
Shield range should subject to the definition of the claims.
Claims (2)
1. it is a kind of by marmem SMA tow drive spatial radial unlocking mechanism, which is characterized in that including pedestal (1),
Outer cover (2), bushing (3), compressed spring (4), two points of valve nuts (5), rigid clip, fixed frame (6), locating piece (7), jacking block
(8), SMA shape-memory alloy wire beam, upper cover (10) and bolt (11)；The outer cover (2) is cylindrical shape, the outer cover (2)
Side wall on be provided with opening, in the opening of outer cover (2), the outer cover (2) is lined with bushing for fixed frame (6) setting
(3), the bottom of the outer cover (2) is fixed with pedestal (1), is equipped with upper cover (10) at the top of the outer cover (2), and the upper cover
(10) be provided centrally with through-hole, the compressed spring (4) is fixed on pedestal (1), and the jacking block (8) is located at compressed spring
(4) top of jacking block (8) is inserted into from the through-hole of upper cover (10) and is located to top, the bolt (11), the bolt (11)
Periphery is cased with locating piece (7) and two points of valve nuts (5), and the locating piece (7) is located at upper cover (10) and two points of valve nuts (5)
Between, divide the periphery of valve nut (5) to be arranged described in two fluted, the rigidity clip setting is in two points of valve nuts (5)
In groove, be provided with " H " type fixed frame (6) at the end closure of the rigidity clip, the both ends of the fixed frame (6) respectively with
The two ends of rigid clip are integrally formed, and the both ends of the fixed frame (6) are respectively arranged with mounting hole, the SMA shape memory
Alloy tow is centered around the periphery of rigid clip and is fixed on fixed frame (6) by mounting hole, also sets on the fixed frame (6)
It is equipped with power device, is used for SMA shape-memory alloy wire Shu Tong electricity.
2. the spatial radial unlocking mechanism according to claim 1 driven by marmem SMA tow, feature exist
In the SMA shape-memory alloy wire beam includes four SMA shape-memory alloy wires (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019942.9A CN109131951B (en) | 2018-09-03 | 2018-09-03 | Spatial radial unlocking mechanism driven by shape memory alloy SMA (shape memory alloy) tows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019942.9A CN109131951B (en) | 2018-09-03 | 2018-09-03 | Spatial radial unlocking mechanism driven by shape memory alloy SMA (shape memory alloy) tows |
Publications (2)
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|---|---|
| CN109131951A true CN109131951A (en) | 2019-01-04 |
| CN109131951B CN109131951B (en) | 2021-09-07 |
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|---|---|---|---|
| CN201811019942.9A Active CN109131951B (en) | 2018-09-03 | 2018-09-03 | Spatial radial unlocking mechanism driven by shape memory alloy SMA (shape memory alloy) tows |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811926A (en) * | 2019-02-26 | 2019-05-28 | 西安理工大学 | A kind of shape-memory alloy wire damper based on self-locking thread |
| CN111371341A (en) * | 2020-03-24 | 2020-07-03 | 燕山大学 | Microminiature SMA oscillating tooth driven motor |
| CN111453001A (en) * | 2019-01-23 | 2020-07-28 | 哈尔滨工业大学 | Connecting and unlocking mechanism driven by shape memory alloy spring |
| CN111806731A (en) * | 2020-06-30 | 2020-10-23 | 哈尔滨工业大学 | Electromagnetically triggered friction type pressing and releasing device |
| CN113086254A (en) * | 2021-04-14 | 2021-07-09 | 电子科技大学 | Simple unlocking device for aviation environment |
| AT523519A4 (en) * | 2020-05-14 | 2021-09-15 | Space Lock Gmbh | Device for holding back and for commanded release of an element to be released in the release direction |
| WO2021209724A1 (en) * | 2020-04-16 | 2021-10-21 | Centre National d'Études Spatiales | Low-shock and reusable retention and release device |
| CN113597180A (en) * | 2021-07-02 | 2021-11-02 | 浙江工业大学 | Multipurpose buffering and releasing device combined with shape memory polymer characteristics |
| CN114560108A (en) * | 2022-01-26 | 2022-05-31 | 南京师范大学泰州学院 | Electromagnetic disengaging device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111453001A (en) * | 2019-01-23 | 2020-07-28 | 哈尔滨工业大学 | Connecting and unlocking mechanism driven by shape memory alloy spring |
| CN111453001B (en) * | 2019-01-23 | 2021-01-05 | 哈尔滨工业大学 | Connecting and unlocking mechanism driven by shape memory alloy spring |
| CN109811926A (en) * | 2019-02-26 | 2019-05-28 | 西安理工大学 | A kind of shape-memory alloy wire damper based on self-locking thread |
| CN111371341A (en) * | 2020-03-24 | 2020-07-03 | 燕山大学 | Microminiature SMA oscillating tooth driven motor |
| CN111371341B (en) * | 2020-03-24 | 2021-04-30 | 燕山大学 | Microminiature SMA oscillating tooth driven motor |
| FR3109413A1 (en) * | 2020-04-16 | 2021-10-22 | Centre National d'Études Spatiales | Reusable, low impact hold and release device |
| WO2021209724A1 (en) * | 2020-04-16 | 2021-10-21 | Centre National d'Études Spatiales | Low-shock and reusable retention and release device |
| EP3909865A1 (en) | 2020-05-14 | 2021-11-17 | Space-Lock GmbH | Device for retaining and commanded release of an element to be released in the release direction |
| AT523519A4 (en) * | 2020-05-14 | 2021-09-15 | Space Lock Gmbh | Device for holding back and for commanded release of an element to be released in the release direction |
| AT523519B1 (en) * | 2020-05-14 | 2021-09-15 | Space Lock Gmbh | Device for holding back and for commanded release of an element to be released in the release direction |
| CN111806731A (en) * | 2020-06-30 | 2020-10-23 | 哈尔滨工业大学 | Electromagnetically triggered friction type pressing and releasing device |
| CN111806731B (en) * | 2020-06-30 | 2021-11-16 | 哈尔滨工业大学 | Electromagnetically triggered friction type pressing and releasing device |
| CN113086254A (en) * | 2021-04-14 | 2021-07-09 | 电子科技大学 | Simple unlocking device for aviation environment |
| CN113597180A (en) * | 2021-07-02 | 2021-11-02 | 浙江工业大学 | Multipurpose buffering and releasing device combined with shape memory polymer characteristics |
| CN114560108A (en) * | 2022-01-26 | 2022-05-31 | 南京师范大学泰州学院 | Electromagnetic disengaging device |
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