CN109727556A - A kind of space representation device - Google Patents

A kind of space representation device Download PDF

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Publication number
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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CN
China
Prior art keywords
locking mechanism
weight linear
linear meter
film
space representation
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.)
Pending
Application number
CN201910001939.2A
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Chinese (zh)
Inventor
刘彦菊
冷劲松
张豆
刘立武
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Harbin Institute of Technology
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Harbin Institute of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin Institute of Technology filed Critical Harbin Institute of Technology
Priority to CN201910001939.2A priority Critical patent/CN109727556A/en
Publication of CN109727556A publication Critical patent/CN109727556A/en
Pending legal-status Critical Current

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Abstract

The present invention provides a kind of space representation devices, are related to field of aerospace technology.The present invention provides a kind of space representation mechanism, including weight linear meter, displaying film, locking mechanism and exciting bank;The upper end for showing film 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 is made of shape memory polymer composite material, is surrounded on the outside of the displaying film on the weight linear meter with retracted configuration, suitable for the displaying film to be fixed on the weight linear meter;The exciting bank is suitable for motivating the locking mechanism under setting condition and replys the locking mechanism, and when the locking mechanism is returned to unfoldable shape, the displaying film is unfolded under the gravity of the weight linear meter.The present invention combines the gravity of shape memory polymer composite material and the weight linear meter, realizes the displaying function of space representation mechanism.

Description

A kind of space representation device
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)

1. a kind of space representation mechanism, which is characterized in that including weight linear meter (1), show 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 in the weight linear meter (1) on;The locking mechanism (3) is made of shape memory polymer composite material, is surround with retracted configuration and is set to volume It is wound on the outside of the displaying film (2) on the weight linear meter (1), is suitable for the displaying film (2) being fixed on the weight linear meter (1) On;The exciting bank is suitable for motivating the locking mechanism (3) under setting condition and goes back to the locking mechanism (3) Multiple, when the locking mechanism (3) is returned to unfoldable shape, the displaying film (2) is under the gravity of the weight linear meter (1) Expansion.
2. space representation mechanism according to claim 1, which is characterized in that set on the displaying film (2) along gravity direction It is equipped with elastic strip (4), the elastic strip (4) and the displaying film (2) are wound on the weight linear meter (1) simultaneously.
3. space representation mechanism according to claim 2, which is characterized in that the elastic strip (4) has two, described in two Elastic strip (4) is respectively arranged at the left side edge and right side edge for showing film (2).
4. space representation mechanism according to claim 1, which is characterized in that the exciting bank includes heater circuit, institute Stating heater circuit includes adding thermal resistance (5), and adding thermal resistance (5) distribution is set to the surface of the locking mechanism (3).
5. space representation mechanism according to claim 4, which is characterized in that the heater circuit further includes thermistor (6), the thermistor (6), the adding thermal resistance (5) and power supply are connected in the same circuit.
6. space representation mechanism according to claim 4, which is characterized in that the adding thermal resistance (5) uses laser ablation It is prepared by mode.
7. space representation mechanism according to claim 5, which is characterized in that the exciting bank further include: strain temperature Sensor and controller, the controller are connected with the strain temperature sensor, and the strain temperature sensor is suitable for prison Survey the strain and temperature of the locking mechanism (3).
8. space representation mechanism according to claim 1, which is characterized in that the shape memory polymer composite material packet Include the material that shape-memory polymer is mutually combined with fiber reinforcement.
9. space representation mechanism according to claim 8, which is characterized in that the fiber reinforcement mutually accounts for the shape memory The volume fraction of polymer composites is 5%-60%.
10. space representation mechanism according to claim 4, which is characterized in that the heater circuit uses solar battery Plate (7) power supply.
CN201910001939.2A 2019-01-02 2019-01-02 A kind of space representation device Pending CN109727556A (en)

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CN201035883Y (en) * 2006-06-26 2008-03-12 傅忠 Scroll advertising device
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