CN109727556A - A kind of space representation device - Google Patents
A kind of space representation device Download PDFInfo
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- CN109727556A CN109727556A CN201910001939.2A CN201910001939A CN109727556A CN 109727556 A CN109727556 A CN 109727556A CN 201910001939 A CN201910001939 A CN 201910001939A CN 109727556 A CN109727556 A CN 109727556A
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Abstract
本发明提供了一种空间展示装置，涉及航空航天技术领域。本发明提供一种空间展示机构，包括配重杆、展示膜、锁定机构和激励装置；所述展示膜的上端适于悬挂固定，下端与所述配重杆连接且卷绕于所述配重杆上；所述锁定机构采用形状记忆聚合物复合材料制成，其以收缩形态环绕于卷绕在所述配重杆上的展示膜外侧，适于将所述展示膜固定于所述配重杆上；所述激励装置适于在设定条件下对所述锁定机构进行激励并使所述锁定机构回复，当所述锁定机构回复到展开形态时，所述展示膜在所述配重杆的重力作用下展开。本发明将形状记忆聚合物复合材料和所述配重杆的重力结合到一起，实现了空间展示机构的展示功能。
The invention provides a space display device, which relates to the technical field of aerospace. The invention provides a space display mechanism, comprising a counterweight rod, a display film, a locking mechanism and an excitation device; the upper end of the display film is suitable for hanging and fixing, and the lower end is connected with the counterweight rod and wound around the counterweight on the rod; the locking mechanism is made of shape memory polymer composite material, which wraps around the outside of the display film wound on the counterweight rod in a contracted form, and is suitable for fixing the display film to the counterweight on the rod; the actuating device is adapted to actuate the locking mechanism under set conditions and restore the locking mechanism, and when the locking mechanism is restored to the deployed state, the display film is placed on the counterweight rod unfolded under the force of gravity. The invention combines the shape memory polymer composite material and the gravity of the counterweight rod together to realize the display function of the space display mechanism.
Description
Technical field
The present invention relates to aerospace field, in particular to a kind of space representation device.
Background technique
In field of aerospace technology, spacecraft after reaching specified celestial body, has been needed when executing deep space exploration task
At some displaying functions, the opening for showing mechanism is usually completed by artificial movement, and for the expansion under unmanned environment
It is difficult to capture, if remote auto is taken to unlock, structure is complex if design, and considers weight issue, and sexual valence is relatively low.
In recent years, shape-memory polymer is more and more concerned, and shape-memory polymer has shape memory function, is that one kind can
The high molecular material for generating intelligent active deformation, under the action of dynamic excitation, which, which can generate, biggish replys change
Shape is converted to unfoldable shape from retracted configuration.
Summary of the invention
In view of this, the present invention is directed to propose a kind of space representation device, utilizes shape memory polymer composite material
Shape memory function is designed.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of space representation mechanism, including weight linear meter, displaying film, locking mechanism and exciting bank；It is described to show the upper of film
End is suitable for suspension and fixes, and lower end connect with the weight linear meter and is wound on the weight linear meter；The locking mechanism uses shape
Memory composites are made, and are surrounded on the outside of the displaying film on the weight linear meter, are suitable for retracted configuration
The displaying film is fixed on the weight linear meter；The exciting bank is suitable for carrying out the locking mechanism under setting condition
It motivates and replys the locking mechanism, when the locking mechanism is returned to unfoldable shape, the displaying film is in the counterweight
It is unfolded under the gravity of bar.
Optionally, gravity direction is provided with elastic strip on the displaying film, the elastic strip and the displaying film are simultaneously
It is wound on the weight linear meter.
Optionally, the elastic strip has two, and two elastic strips are respectively arranged at the left side edge for showing film
And right side edge.
Optionally, the exciting bank includes heater circuit, and the heater circuit includes adding thermal resistance, the adding thermal resistance
Distribution is set to the surface of the locking mechanism.
Optionally, the heater circuit further includes thermistor, and the thermistor, the adding thermal resistance are connected with power supply
In the same circuit.
Optionally, the adding thermal resistance is prepared using laser ablation mode.
Optionally, the exciting bank further include: strain temperature sensor and controller, the strain temperature sensor and
The controller is connected, and the strain temperature sensor is suitable for monitoring the strain and temperature of the locking mechanism.
Optionally, the shape memory polymer composite material include shape-memory polymer it is mutually compound with fiber reinforcement and
At material.
Optionally, it is 5%- that the fiber reinforcement, which mutually accounts for the volume fraction of the shape memory polymer composite material,
60%.
Optionally, the heater circuit is powered using solar panel.
Compared with the existing technology, space representation device of the present invention has the advantage that
For the present invention when the displaying film roll is around on the weight linear meter, the locking mechanism in contraction state can be with
Fixed function is rolls-up onto displaying, avoids scattering for the displaying film；When the displaying film needs to be unfolded, the locking mechanism
Unfoldable shape is returned under the action of exciting bank, then the displaying volume carries out under the action of the gravity of the weight linear meter
Expansion, the gravity of shape memory polymer composite material and the weight linear meter is combined, space representation mechanism is realized
Displaying function.In addition, realizing the reusable of the space representation mechanism by shape memory polymer composite material.
Elastic strip of the present invention can be played to the booster action for showing film edge, avoid the broken of the displaying film
It is bad；In addition, by the setting of the elastic strip, it can be to avoid the bonding for showing film；But more main effect is still,
Certain resilient urging force is provided, convenient for the expansion for showing film, avoids that the weight linear meter quality is too small to cause the exhibition
Show the phenomenon that film can not be unfolded.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is positive structure schematic after the space representation mechanism opening of the embodiment of the present invention；
Fig. 2 is structure schematic diagram after the space representation mechanism opening of the embodiment of the present invention；
Structural schematic diagram when Fig. 3 is the space representation mechanism locking of the embodiment of the present invention；
Fig. 4 is the heating circuit structure schematic diagram of the embodiment of the present invention；
Fig. 5 is the weight linear meter structural schematic diagram of the embodiment of the present invention.
Description of symbols:
1- weight linear meter, 2- show film, 3- locking mechanism, 4- elastic strip, 5- adding thermal resistance, 6- thermistor, 7- solar energy
Solar panel, 8- engraved structure.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, direction or positional relationship all in the text being previously mentioned in an embodiment of the present invention are the position based on attached drawing
Relationship is set, only for facilitating the description present invention and simplifying description, rather than implies or imply that signified device or element must have
The specific orientation having, is not considered as limiting the invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
A kind of space representation mechanism, as depicted in figs. 1 and 2, including weight linear meter 1, displaying film 2, locking mechanism 3 and excitation dress
It sets；The upper end for showing film 2 is suitable for suspension and fixes, and lower end connect with the weight linear meter 1 and is wound on the weight linear meter 1；
The locking mechanism 3 is made of shape memory polymer composite material, is surrounded on retracted configuration wound on the counterweight
2 outside of displaying film on bar 1, suitable for the displaying film 2 to be fixed on the weight linear meter 1；The exciting bank is suitable for setting
The locking mechanism 3 is motivated under fixed condition and replys the locking mechanism 3, when the locking mechanism 3 is returned to exhibition
When open form state, the displaying film 2 is unfolded under the gravity of the weight linear meter 1.
It should be noted that as shown in Fig. 2, the unfoldable shape of the locking mechanism 3 is bar shaped, as shown in Figure 1, the exhibition
Show that wherein one end of film 2 is connect by the way of bonding or screw fastening with the weight linear meter 1, as shown in figure 3, manufacturing process
In, first by the displaying film 2 on the weight linear meter 1, then by the locking mechanism 3 in retracted configuration along described
Weight linear meter 1 circumferentially around it is described show film 2 outside, be fixed on the displayings film 2 on the weight linear meter 1, make described in
Show that film 2 is not unfolded.As shown in Figures 2 and 3, it is mounted on the locking mechanism 3 in the left and right sides for showing film 2,
To guarantee the symmetry of structure, fixing intensity also can be enhanced.
The upper end for showing film 2 is provided with threaded hole, in such a way that screw fastens with the car body of celestial body vehicle or too
Sky calibration object connection hangs on the space representation mechanism on the car body or space calibration object.The excitation
Device is connected with controller, when the controller receive expansion instruction when, the exciting bank to the locking mechanism 3 into
Row energization replys the locking mechanism 3；When the locking mechanism 3 is returned to unfoldable shape, release to the displaying film 2
Limitation, the displaying film 2 is unfolded under the gravity of weight linear meter 1, to show displaying picture.
Here, the shape memory polymer composite material includes made of shape-memory polymer and fiber-reinforced composite
Material.The fiber reinforcement is mutually carbon fiber, glass fibre, spandex fibre, Kafra fiber, aramid fiber, graphene or carbon
One of nanotube is a variety of.Wherein the fiber reinforcement mutually accounts for the volume fraction of the shape memory polymer composite material
For 5%-60%.Preferably, the volume fraction of fiber reinforcement phase described in the shape memory polymer composite material is 40%.
Volume fraction shared by the fiber reinforcement phase can be adjusted according to the demand of coupling mechanism force, when required coupling mechanism force is smaller,
The lesser shape memory polymer composite material of the fiber reinforcement phase volume fraction can be selected；When required coupling mechanism force
When larger, the biggish shape memory polymer composite material of the fiber reinforcement phase volume can be selected.
The advantages of this arrangement are as follows when the displaying film 2 is wound on the weight linear meter 1, in contraction state
The locking mechanism 3 can be rolls-up onto fixed function to displaying, avoid scattering for the displaying film 2；When the displaying film 2 needs
When expansion, the locking mechanism 3 is returned to unfoldable shape under the action of exciting bank, and then the displaying volume 2 is matched described
It is unfolded under the action of the gravity of weight bar, the gravity of shape memory polymer composite material and the weight linear meter 1 is integrated to
Together, the displaying function of space representation mechanism is realized.In addition, realizing the sky by shape memory polymer composite material
Between show mechanism it is reusable.
Embodiment two
Place unlike the embodiments above is, as shown in Figure 1, being provided with bullet along the vertical direction on the displaying film 2
Property item 4, the elastic strip 4 and the displaying film 2 are wound in together on the weight linear meter 1.Here upper and lower refers to when described
Show direction parallel with gravity after film 2 is unfolded.
In order to avoid the quality of the weight linear meter 1 is excessive, increase transportation cost, weight linear meter 1 described here uses cylinder knot
Structure, as shown in figure 5, and avoiding opening up engraved structure 8 in the cylinder.But when the quality of the weight linear meter 1 is too small
When, but may with the displaying film 2 can not be unfolded the phenomenon that.Here, the elastic strip 4 can choose stalloy material
Matter can also choose organic polymer fibrous material or other elastic materials.The original state of the elastic strip is shown in FIG. 1
Bar shaped state, as depicted in figs. 1 and 2, the elastic strip 4 and front and the back for showing film 2 and being located at the displaying film 2
Face, front refer to that the displaying film 2 draws figuratum side, and the back side refers on the displaying film 2 back to the drafting
Figuratum side.In manufacturing process, first the elastic strip 4 and the displaying film 2 are wound in together on the weight linear meter 1,
By figuratum side wound on the side close to 1 center of weight linear meter, that is to say, that figuratum side is wound on interior
Side；Then the locking mechanism 3 in retracted configuration is shown into the outer of film 2 circumferentially around described along the weight linear meter 1
Side is fixed on the displaying film 2 on the weight linear meter 1, keeps the displaying film 2 not unfolded.As shown in Figures 2 and 3, in institute
It states and shows that the left and right sides of film 2 is mounted on the locking mechanism 3, to guarantee the symmetry of structure, also can be enhanced fixed strong
Degree.
When the controller receives expansion instruction, the exciting bank motivates the locking mechanism 3, makes institute
State the expansion of locking mechanism 3；But in order to avoid gravity deficiency so that the case where displaying film 2 is unfolded, here, described
Show that elastic strip 4 is respectively set in the edge of the left and right sides of film 2, what the elastic strip 4 can be fastened by bonding or screw
Mode is connect with the displaying film 2.When the locking mechanism 3 expansion after, the elastic strip 4 due to be in tensioning state,
Having certain elastic force flicks the displaying film 2, avoids the bonding for showing film 2, after the displaying film 2 is flicked,
The displaying film 2 is unfolded under the gravity of weight linear meter 1, to show displaying picture.
The advantages of this arrangement are as follows the elastic strip 4 can be played to the booster action for showing 2 edge of film, keep away
Exempt from the destruction for showing film 2；In addition, by the setting of the elastic strip 4, it can be to avoid the bonding for showing film 2；But more
Main effect is still, provides certain resilient urging force, convenient for the expansion for showing film 2, avoids the counterweight
1 mass of bar too small the phenomenon that causing the displaying film 2 that can not be unfolded.
Embodiment three
Place unlike the embodiments above is, as shown in figure 4, the exciting bank includes heater circuit, it is described to add
Heater circuit includes adding thermal resistance 5, and the adding thermal resistance 5 is distributed the surface for being set to the locking mechanism 3.
Here, as shown in figure 4, the adding thermal resistance 5 is distributed in the table that the locking mechanism 3 is in the part of contraction state
Face, that is, the lower half portion of the locking mechanism 3 are down here for the structure in Fig. 4.The adding thermal resistance
5 are prepared in the surface of the locking mechanism 3 using laser ablation mode, and the adding thermal resistance 5 is not contacted with the displaying film 2.
It should be noted that the adding thermal resistance 5 is series among heater circuit with power supply, instructed when receiving expansion
Afterwards, the heater circuit work, the adding thermal resistance 5 are generated heat, and thermal excitation are imposed to the locking mechanism 3, due to the locking
Mechanism 3 is made of shape memory polymer composite material, when the locking mechanism 3 reaches shape memory polymer composite material
When more than glass transition temperature, the locking mechanism 3 is started to spread out.The adding thermal resistance 5 by resistivity such as constantans substantially not
The material varied with temperature is made.Wherein, the power supply uses solar panel 7, is institute by the solar panel 7
State heater circuit power supply.Certain power supply can also be battery, and the battery is connect with the solar panel 7, lead to
The solar panel 7 is crossed by the energy storage being collected into the battery, is the heating by the battery
Circuit power supply.
Example IV
Place unlike the embodiments above is, as shown in figure 4, the heater circuit further includes thermistor 6, it is described
Thermistor 6, the adding thermal resistance 5 and power supply are connected in the same circuit.The resistivity of thermistor 6 is increased with temperature and is risen
Height, the thermistor 6 are connected with the adding thermal resistance 5.
Since space environment range of temperature is larger, this is one for thermotropic shape memory polymer material
A biggish challenge.When the glass transition temperature of shape memory polymer composite material, the locking mechanism 3 is not achieved in temperature
It can not be unfolded；But when environment temperature is excessively high, and it will lead to the decomposition of shape memory polymer composite material.The heating electricity
The heat generated that is powered of resistance 5 is mainly shed by three kinds of heat transfer, thermal convection and heat radiation modes, and voltage and temperature are changing into
It is positively correlated, i.e., voltage is higher, and temperature rise is bigger；Voltage is lower, and temperature rise is smaller.That is, if it is desirable that finally balancing
When obtain a certain temperature value if, environment temperature is lower to need bigger voltage value；Environment temperature is higher to need smaller voltage
Value.When the adding thermal resistance 5 is heated with changeless power, rapid heat dissipation at low ambient temperatures, in fact it could happen that heating
The glass transition temperature of the shape memory polymer composite material is not achieved in temperature, and it is relatively slow to radiate in the high temperature environment,
Heating temperature again may be excessively high, leads to the decomposition of the shape memory polymer composite material, leads to the space representation device
Damage.
Here, the thermistor 6, the adding thermal resistance 5 and power supply are series in heater circuit, the thermistor
6 use the thermistor of positive temperature coefficient, that is to say, that the resistance of the thermistor 6 is increased with temperature and increased.The heat
The selection needs of quick resistance 6 are determined according to the temperature range estimated in advance, it is ensured that electrified regulation under low temperature and hot environment
Temperature can be in a reasonable range.When environment temperature is excessively high, the resistance value of the thermistor 6 is bigger, point
The supply voltage of load is bigger, and the voltage at 5 both ends of adding thermal resistance then accordingly reduces, and reduces the power of the adding thermal resistance 5,
Calorific value is reduced, so as to avoid the generation of the excessively high phenomenon of heating temperature in hot environment；When environment temperature is too low, institute
The resistance value for stating thermistor 6 is smaller, and the supply voltage shared is smaller, and the voltage at 5 both ends of adding thermal resistance then accordingly increases
Greatly, the power of the adding thermal resistance 5 is increased, calorific value is increased, it is too low so as to avoid heating temperature in low temperature environment
Phenomenon occurs.
As shown in figure 4, the thermistor 6 is located at the position of 3 unfoldable shape of locking mechanism, that is, it is located at described
The position of the top half of locking mechanism 3, the distance between the thermistor 6 and the adding thermal resistance 5 ensure that the heat
Quick resistance 6 is not interfered by the adding thermal resistance 5.By the setting of the thermistor, realize according to environment temperature to described
The automatic adjusument of heater circuit, to realize reliable and secure heating at different ambient temperatures.
Embodiment five
Place unlike the embodiments above is, the space representation mechanism further include: strain temperature sensor and control
Device processed, the strain temperature sensor are connected with the controller, and the strain temperature sensor is suitable for monitoring the locking
The strain and temperature of mechanism 3.
Here, the strain temperature sensor uses flexible electronic device, integrated with composite material in the fabrication process
Molding, the strain temperature sensor can simultaneously be monitored the temperature of the locking mechanism 3 and strain.The strain temperature
Sensor is using the low-frequency range of frequency spectrum as temperature signal, and high band is as the components of strain, closer one under the premise of assurance function
The simplification of the realization structure of step.Wherein, the strain data that the strain temperature sensor is incuded is used to judge the locking machine
The expansion degree of structure 3, if the expansion degree of the locking mechanism 3 is not up to setting value, the adding thermal resistance 5 continues to heat, make
The temperature of the locking mechanism 3 is in shape expansion temperature range；The temperature data that the strain temperature sensor is incuded
For monitoring the temperature of the locking mechanism 3, when the locking mechanism 3 when the temperature is excessively high, it is electric that controller disconnects the heating
Road；When glass transition temperature of the temperature lower than the shape memory polymer composite material, then circuit is connected, the heating is made
Resistance 5 continues to heat, and when the expansion degree of locking mechanism 3 reaches setting value, controller disconnects heater circuit.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
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| CN201910001939.2A CN109727556A (en) | 2019-01-02 | 2019-01-02 | A kind of space representation device |
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| CN201910001939.2A CN109727556A (en) | 2019-01-02 | 2019-01-02 | A kind of space representation device |
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Application publication date: 20190507 |