CN116834979B - Solar sail unfolding mechanism adopting double-sail hub structure - Google Patents
Solar sail unfolding mechanism adopting double-sail hub structure Download PDFInfo
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- CN116834979B CN116834979B CN202311098824.2A CN202311098824A CN116834979B CN 116834979 B CN116834979 B CN 116834979B CN 202311098824 A CN202311098824 A CN 202311098824A CN 116834979 B CN116834979 B CN 116834979B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000000670 limiting effect Effects 0.000 claims description 41
- 238000003825 pressing Methods 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims 3
- 239000010408 film Substances 0.000 claims 2
- 239000012528 membrane Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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
- B64G1/40—Arrangements or adaptations of propulsion systems
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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
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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
- B64G1/42—Arrangements or adaptations of power supply systems
- B64G1/44—Arrangements or adaptations of power supply systems using radiation, e.g. deployable solar arrays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Aviation & Aerospace Engineering (AREA)
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- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention belongs to the technical field of space unfolding mechanisms, and particularly relates to a solar sail unfolding mechanism adopting a double-sail hub structure. According to the solar sail unfolding mechanism, the two sail truss hubs are simultaneously driven to rotate at a constant speed by the central transmission shaft through the steel belt wheels and the steel belt, so that the two groups of the sails on each sail truss hub are respectively stretched out, and compared with the existing solar sail unfolding mechanism, the structure that all the sails are driven to stretch out by only one rotating shaft can effectively avoid 'bulge'; the sail girder hub can reliably and stably rotate in one direction and drive the sail girders to be unfolded, the phenomenon that the use of the solar sails is affected due to accidental reverse rotation of the sail girder hub is avoided, the rotation position of the sail girder hub can be automatically locked after the solar sails are completely unfolded, and stable unfolding of the sail girders and the solar sail films is ensured.
Description
Technical Field
The invention belongs to the technical field of space unfolding mechanisms, and particularly relates to a solar sail unfolding mechanism adopting a double-sail hub structure.
Background
The space solar sail unfolding mechanism is an advanced space technology for propelling by utilizing solar light pressure, has the characteristics of high efficiency and environmental protection, and has the advantages of long-term continuous propelling, compactness, light weight and the like; the device has good flexibility, can be designed into various shapes and sizes, and is suitable for different task demands, so that the device becomes a potential propulsion technology and provides new possibility for future space exploration and space flight.
The space solar sail unfolding mechanism is widely applied to deep space exploration tasks, solar observation tasks and future interplanetary navigation. The method provides an efficient propulsion method for exploring the outer planets, comets and asteroids of the solar system, and has potential application value in solar activity observation and future interplanetary exploration. The deployment mechanism plays an important role in the deployment and stowing of the solar sail, and incorrect deployment may cause the solar sail to fail to function properly, even damaging the entire spacecraft.
However, the existing solar sail unfolding device generally adopts a structure that a single rotating shaft is adopted to push out the sails, all the sails are wound on the same rotating shaft, when the sails are pushed out in an extending mode, the inner layer and the outer layer of the sails in a curled state are easy to move relatively, so that the sails suddenly appear in a 'bulge' state, and the normal unfolding of the solar sails is further affected.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a solar sail deployment mechanism that employs a dual sail hub structure.
The aim of the invention is realized by the following technical scheme:
a solar sail unfolding mechanism adopting a double-sail hub structure comprises a double-sail truss hub mounting frame, a double-sail hub mounting frame, a stepping motor, a central transmission shaft, a steel belt, a sail truss hub wound with a sail truss, a positioning component used for controlling the extending direction of the sail truss, a double-sail hub wound with a solar sail film and a rotation limiting component used for limiting the inversion of the sail truss hub;
the central transmission shaft is arranged in the middle of the inner side of the double-girder hub installation frame, the central transmission shaft is driven to rotate by the stepping motor, the steel belt wheel is arranged on the central transmission shaft, girder hubs are respectively arranged on the inner side of the double-girder hub installation frame and at symmetrical positions of two sides of the central transmission shaft in a rotating mode, each girder hub is respectively connected with the steel belt wheel through steel belts, one end of each steel belt is fixed on the steel belt wheel, the other end of each steel belt winds around the steel belt wheel for a plurality of circles and is then fixed on the corresponding girder hubs, each girder hub is wound with two groups of girders and is divided into girders A and girders B, the extending direction of each girder A of each girder hub is a fixed included angle with the extending direction of the girder A of the same girder hub, the extending direction of one girder A of the girder hub is opposite to the extending direction of the girder A of the girder B of the other girder hub, and the girders B of one girder hub are respectively provided with the girders B of the girders opposite directions;
each sail truss hub is correspondingly used with a group of rotation limiting components, each group of rotation limiting components comprises a ratchet wheel, a pawl and a torsion spring, the ratchet wheel of each group of rotation limiting components is arranged on the corresponding sail truss hub, one end of the pawl of each group of rotation limiting components is connected with a double sail truss hub installation frame through the torsion spring of each group of rotation limiting components, and the other end of the pawl of each group of rotation limiting components is inserted into the outer tooth surface of the ratchet wheel of the same group of rotation limiting components;
the double-sail hub mounting frame is mounted on the lower side of the double-sail truss hub mounting frame, double-sail hub support mandrels are respectively arranged on positions, corresponding to the double-sail truss hubs, of the double-sail hub mounting frame, each double-sail hub support mandrel is sleeved with one double-sail hub, each double-sail hub is winded with two groups of solar sail films, each group of solar sail films is correspondingly connected with one sail truss support on the sail truss A and one sail truss support on the adjacent sail truss B, and each solar sail film is correspondingly arranged between the corresponding sail truss B and the adjacent sail truss A.
The double-sailing-truss-hub mounting frame comprises a frame top plate, a frame bottom plate and a plurality of support columns, wherein each support column is respectively supported and arranged between the frame top plate and the frame bottom plate, the central transmission shaft is rotatably arranged between the frame top plate and the frame bottom plate, and two sailing truss hubs are respectively rotatably arranged on the frame bottom plate.
The positioning assembly comprises a plurality of guide rods, guide rod adjusting grooves are formed in the frame top plate and the frame bottom plate, the guide rod adjusting grooves in the frame top plate and the guide rod adjusting grooves in the frame bottom plate are located close to the positions, of the double-sail-truss hub mounting frame, the setting positions of the guide rod adjusting grooves in the frame top plate and the setting positions of the guide rod adjusting grooves in the frame bottom plate are mutually corresponding up and down, one guide rod is arranged between each two guide rod adjusting grooves in a penetrating mode, each guide rod is in a limiting effect with the outer side face of one corresponding sail truss, and a sail extending outlet is formed between each guide rod and one adjacent support column.
The ratchet wheels of each group of rotation limiting components are all arranged at the upper ends of the corresponding sail truss hubs, one ends of the pawls of each group of rotation limiting components are connected to the upper side face of the frame top plate through torsion springs of the group of rotation limiting components, and the upper side face of the frame top plate is further provided with upper end covers for covering the ratchet wheels respectively.
The positioning assembly comprises a plurality of pressing plates arranged on the inner side of the double-truss hub installation frame, one end of each pressing plate extends to a position close to one adjacent truss hub and is provided with a pressing roller, and each pressing roller is respectively abutted to the surface of a truss wound on the truss hub.
The stepping motor is arranged on the double-sail truss hub mounting frame, the driving shaft of the stepping motor drives the central transmission shaft through a transmission gear set, the transmission gear set comprises a driving gear, an idler gear and a driven gear, the driving gear is arranged on the driving shaft of the stepping motor, the driven gear is arranged on the central transmission shaft, the idler gear is rotationally arranged on the double-sail truss hub mounting frame, and the idler gear is meshed with the driving gear and the driven gear respectively.
And the sail truss brackets on each sail truss are connected with the adjacent solar sail film through tension springs.
The lower extreme of every sail truss wheel hub all is connected with the wind spring dish, the inboard of wind spring dish is equipped with the wind spring, the one end of wind spring with the wind spring dish is connected, the other end of wind spring with adjacent one double sail wheel hub supports the dabber and is connected.
The invention has the advantages and positive effects that:
according to the solar sail unfolding mechanism, the two sail truss hubs are simultaneously driven to rotate at a constant speed by the central transmission shaft through the steel belt wheels and the steel belt, so that the two groups of the sails on each sail truss hub are respectively stretched out, the unfolding is more stable, and compared with the existing solar sail unfolding mechanism, the solar sail unfolding mechanism has the structure that all the sails are driven to stretch out by only one rotating shaft, so that the occurrence of bulge can be effectively avoided; and through the setting of rotation limiting component, can make the reliable steady unidirectional rotation of girder wheel hub of the sail and drive the girder of the sail and expand, avoid the girder of the sail wheel hub unexpected to reverse and influence the use of the solar sail, can lock the girder of the sail wheel hub rotation position after the complete expansion of the solar sail automatically, ensure girder of the sail and solar sail film keep expanding steadily.
Drawings
FIG. 1 is a schematic view of the main body portion of the present invention with the sail stringers and solar sail membrane removed;
FIG. 2 is a schematic view of the present invention showing the structure of the sail girder and the solar sail membrane when the membrane is deployed;
FIG. 3 is a second schematic view of the present invention when the sail girder and solar sail membrane are deployed;
FIG. 4 is a schematic view of the main body portion of the present invention with the frame base, the sail stringers, and the solar sail membrane removed;
FIG. 5 is an enlarged view at A of FIG. 4;
FIG. 6 is a schematic illustration of the body portion of the present invention with parts broken away;
FIG. 7 is an enlarged view at B of FIG. 2;
fig. 8 is a schematic view of the structure of the present invention with the bottom of the main body portion facing upwards.
In the figure: 1 is a stepping motor, 2 is a central transmission shaft, 3 is a steel belt wheel, 4 is a steel belt, 5 is a sailing truss hub, 6 is a double-sail hub, 7 is a sailing truss support, 8 is a ratchet wheel, 9 is a pawl, 10 is a torsion spring, 11 is a double-sail hub supporting mandrel, 12 is a frame top plate, 13 is a frame bottom plate, 14 is a supporting column, 15 is a guide rod, 16 is a guide rod adjusting groove, 17 is an upper end cover, 18 is a pressing plate, 19 is a pressing roller, 20 is a driving gear, 21 is an idler gear, 22 is a driven gear, 23 is a tension spring, 24 is a coil spring disc, 25 is a coil spring, 26 is a double-sail hub mounting bottom plate, and 27 is a hollow connecting column;
001 is a truss, 0011 is a truss A, 0012 is a truss B, and 002 is a solar sail film.
Detailed Description
The invention is further described in detail below with reference to fig. 1-8.
1-8, the solar sail unfolding mechanism adopting the double-sail hub structure comprises a double-sail-truss hub mounting frame, a double-sail-hub mounting frame, a stepping motor 1, a central transmission shaft 2, a steel belt wheel 3, a steel belt 4, a sail truss hub 5 coiled with a sail truss 001, a positioning component for controlling the extending direction of the sail truss 001, a double-sail hub 6 coiled with a solar sail film 002 and a rotation limiting component for limiting the inversion of the sail truss hub 5. In this embodiment, the stepper motor 1 is a commercially available product, and the action is controlled by an external controller. In this embodiment, the rolling structure of the sail girder 001 on the sail girder hub 5 and the rolling structure of the solar sail film 002 on the double-sail hub 6 all adopt the rolling mode of the existing solar sail unwinding mechanism.
The central transmission shaft 2 is installed in the inboard middle part of two girder wheel hub installation frame, central transmission shaft 2 drives through step motor 1 and rotates, steel band wheel 3 sets up on central transmission shaft 2, the inboard of two girder wheel hub installation frame and respectively rotate on the bilateral symmetry position of central transmission shaft 2 and be equipped with girder wheel hub 5, every girder wheel hub 5 passes through steel band 4 with steel band 3 respectively and is connected, the one end of steel band 4 is fixed in on the steel band wheel 3, the steel band 4 other end twines steel band 3 a plurality of rings and then is fixed in on the girder wheel hub 5 that corresponds, the reel is equipped with two sets of girders 001 on every girder wheel hub 5, divide into girder A0011 and girder B0012, the direction of stretching of girder A0011 of every girder wheel hub 5 is fixed contained angle with the direction of stretching of girder B0012 of the same girder wheel hub 5, for example ninety degrees angle, the direction of stretching of girder A1 of one girder wheel hub 5 is opposite to the direction of stretching of girder A0011 of another girder wheel hub 5, the girder B0012 of one girder wheel hub 5 is equipped with the other girder 0012 of girder 5, the opposite direction of girder B0012 is equipped with the other girder 0012 of girder 5. In this embodiment, the sail girder hubs 5 and the steel belt 4 are driven in a curled traction manner, and a central transmission shaft 2 drives two sail girder hubs 5 to rotate at a constant speed, so that two groups of sail girders 001 on each sail girder hub 5 extend out respectively, and the deployment is more stable. Compared with the existing solar sail unfolding mechanism, the structure that all the sails 001 are driven to stretch out by only one rotating shaft can effectively avoid the bulge.
As shown in fig. 4 to 6, each of the sail girder hubs 5 is used corresponding to a set of rotation limiting members, each set of rotation limiting members includes a ratchet wheel 8, a pawl 9 and a torsion spring 10, the ratchet wheel 8 of each set of rotation limiting members is mounted on the corresponding sail girder hub 5, one end of the pawl 9 of each set of rotation limiting members is connected with a double sail girder hub mounting frame through the torsion spring 10 of the set of rotation limiting members, and the other end of the pawl 9 of each set of rotation limiting members is inserted onto an outer tooth surface of the ratchet wheel 8 of the same set of rotation limiting members. Through the setting of the rotation limiting assembly including ratchet 8, pawl 9 and torsional spring 10, can make the reliable steady unidirectional rotation of girder wheel hub 5 and drive girder 001 to expand, avoid girder wheel hub 5 unexpected reversal and influence the use of solar sail, can lock girder wheel hub 5 rotation position voluntarily after the solar sail is expanded completely, ensure girder 001 and solar sail film 002 remain stable expansion.
The double-sail hub mounting frame is mounted on the lower side of the double-sail truss hub mounting frame, double-sail hub supporting mandrels 11 are respectively arranged at positions, corresponding to the various truss hubs 5, of the double-sail hub mounting frame, a double-sail hub 6 is sleeved on each double-sail hub supporting mandrel 11, two groups of solar sail films 002 are wound on each double-sail hub 6, each group of solar sail films 002 is correspondingly connected with a truss support 7 on a truss A0011 and a truss support 7 on a truss B0012 adjacent to the truss A0011, and solar sail films 002 are correspondingly arranged between each truss B0012 and the adjacent truss A0011. Each sail girder 001 is extended outwards and unfolded, and simultaneously drives the connected solar sail film 002 to be unfolded synchronously.
Specifically, as shown in fig. 1, 4 and 6, the double-truss hub mounting frame in this embodiment includes a frame top plate 12, a frame bottom plate 13 and six support columns 14, each support column 14 is supported and arranged between the frame top plate 12 and the frame bottom plate 13, the central transmission shaft 2 is rotatably arranged between the frame top plate 12 and the frame bottom plate 13, and the two truss hubs 5 are rotatably arranged on the frame bottom plate 13, so that the manufacturing and the assembly are easy. The double-sail hub mounting frame in the embodiment comprises a double-sail hub mounting base plate 26 and a hollow connecting column 27, one end of the hollow connecting column 27 is connected with the frame base plate 13, the other end of the hollow connecting column 27 is connected with the double-sail hub mounting base plate 26, and the double-sail hub supporting mandrels 11 are respectively fixed on the double-sail hub mounting base plate 26.
Specifically, as shown in fig. 4, the positioning assembly in this embodiment includes four guide rods 15, guide rod adjusting slots 16 are respectively disposed on the frame top plate 12 and the frame bottom plate 13, the guide rod adjusting slots 16 on the frame top plate 12 and the guide rod adjusting slots 16 on the frame bottom plate 13 are respectively located at positions close to the positions where the respective sails 001 extend out of the double-sails-truss hub mounting frame, the setting positions of the guide rod adjusting slots 16 on the frame top plate 12 and the setting positions of the guide rod adjusting slots 16 of the frame bottom plate 13 are vertically corresponding to each other, one guide rod 15 is disposed between each two guide rod adjusting slots 16 vertically corresponding to each other in a penetrating manner, and a truss extension outlet is formed between each guide rod 15 and one adjacent support column 14 and plays a limiting role on the outer side surface of the corresponding one of the sails 001. As shown in the drawings of the specification, the boom 001 is expanded in its width direction shape during the outward extension from the boom hub 5, and the guide bar adjusting groove 16 is provided to adjust the width of the boom extension outlet according to the expanded width of the boom 001. The positioning assembly further comprises a plurality of pressing plates 18 arranged on the inner side of the double-truss hub mounting frame, one end of each pressing plate 18 extends to a position close to one adjacent truss hub 5 and is provided with a pressing roller 19, each pressing roller 19 is respectively abutted to the surface of a truss 001 coiled on the truss hub 5, and extra constraint force is provided for the truss 001 which is in a curled state on the truss hub 5 in the unfolding process, so that the phenomenon of bulge of the truss 001 is further prevented.
Specifically, as shown in fig. 1 and 6, in this embodiment, the ratchet wheels 8 of each set of rotation limiting assemblies are all mounted on the upper ends of the corresponding sailing truss hubs 5, one ends of the pawls 9 of each set of rotation limiting assemblies are connected to the upper side surface of the frame top plate 12 through the torsion springs 10 of the set of rotation limiting assemblies, and the upper side surface of the frame top plate 12 is further provided with upper end covers 17 for covering the ratchet wheels 8, so that the upper end covers 17 can protect the internal structure and are easy to assemble and disassemble.
Specifically, as shown in fig. 1 and 6, in the present embodiment, the stepper motor 1 is mounted on a double-sail truss hub mounting frame, the driving shaft of the stepper motor 1 drives the central driving shaft 2 through a driving gear set, the driving gear set includes a driving gear 20, an idler gear 21 and a driven gear 22, the driving gear 20 is mounted on the driving shaft of the stepper motor 1, the driven gear 22 is mounted on the central driving shaft 2, the idler gear 21 is rotatably mounted on the double-sail truss hub mounting frame, the idler gear 21 is meshed with the driving gear 20 and the driven gear 22 respectively, and the transmission is reliable and stable. The axial center line of the central transmission shaft 2, the axial center line of the steel belt wheel 3, the axial center line of the driven gear 22 and the axial center line of the hollow connecting post 27 are all collinear in this embodiment. The axial center line of the central transmission shaft 2, the axial center line of each sail girder hub 5, and the center line of the drive shaft of the stepping motor 1 are parallel to each other in this embodiment.
Specifically, as shown in fig. 7, in this embodiment, the truss support 7 on each truss 001 is connected to the adjacent solar sail film 002 through the tension spring 23, so that the solar sail film 002 is prevented from being disconnected from the truss 001 due to excessive instantaneous tension, and a stable traction force is ensured.
Specifically, as shown in fig. 6 and 8, in this embodiment, the lower end of each sail truss hub 5 is connected to a wind spring plate 24, a wind spring 25 is provided on the inner side of the wind spring plate 24, one end of the wind spring 25 is connected to the wind spring plate 24, and the other end of the wind spring 25 is connected to an adjacent double-sail hub support spindle 11. By the arrangement of the coil spring plate 24 and the coil spring 25, the opposite force with the force generated when the sailing boom 001 is unfolded can be generated, the sudden relative movement of the inner layer and the outer layer of the sailing boom 001 is further prevented, and the stability during unfolding is enhanced.
When the solar sail is required to be unfolded, the stepping motor 1 drives the central transmission shaft 2 and the steel belt wheel 3 to rotate, the sail girder hubs 5 on two sides synchronously rotate under the traction of the steel belt 4, and the double-sail hub 6 synchronously rotates under the traction of the sail girder 001 and the solar sail film 002, so that the sail girder 001 and the solar sail film 002 are synchronously unfolded; after the solar sails are fully unfolded, the rotation limiting assembly automatically locks the rotation position of the sail truss hub 5, the unfolded solar sails are timely locked at the tensioning position, the sail truss hub 5 is prevented from rotating, and therefore the unfolding of the once-space solar sail mechanism is completed.
Claims (8)
1. A solar sail deployment mechanism adopting a double-sail hub structure is characterized in that: the device comprises a double-sail-truss hub mounting frame, a double-sail-hub mounting frame, a stepping motor (1), a central transmission shaft (2), a steel belt wheel (3), a steel belt (4), a sail-truss hub (5) coiled with a sail truss (001), a positioning component for controlling the extending direction of the sail truss (001), a double-sail hub (6) coiled with a solar sail film (002) and a rotation limiting component for limiting the inversion of the sail-truss hub (5);
the central transmission shaft (2) is arranged in the middle of the inner side of the double-sailing-truss hub installation frame, the central transmission shaft (2) is driven to rotate by the stepping motor (1), the steel belt wheel (3) is arranged on the central transmission shaft (2), two groups of sailing-truss hubs (5) are respectively arranged on the inner side of the double-sailing-truss hub installation frame and on two symmetrical positions of the central transmission shaft (2) in a rotating mode, each sailing-truss hub (5) is respectively connected with the steel belt wheel (3) through a steel belt (4), one end of the steel belt (4) is fixed on the steel belt wheel (3), the other end of the steel belt (4) winds around the steel belt wheel (3) for a plurality of circles and is then fixed on the corresponding sailing-truss hubs (5), two groups of sailing-truss hubs (001), a (0011) and a (0012) are respectively coiled on each sailing-truss hub (5), the sailing-truss A (0011) of each sailing-hub (5) is connected with the other sailing-truss (0011) in the same direction, the direction of the sailing-truss (0011) of the sailing-hub (5) extends in the opposite direction of the other (0011), the extending direction of a girder B (0012) of one girder hub (5) is opposite to the extending direction of a girder B (0012) of the other girder hub (5), and the outermost end of each girder (001) is provided with a girder bracket (7);
each sail truss hub (5) is correspondingly used by a group of rotation limiting assemblies, each group of rotation limiting assemblies comprises a ratchet wheel (8), a pawl (9) and a torsion spring (10), the ratchet wheel (8) of each group of rotation limiting assemblies is arranged on the corresponding sail truss hub (5), one end of the pawl (9) of each group of rotation limiting assemblies is connected with a double sail truss hub mounting frame through the torsion spring (10) of each group of rotation limiting assemblies, and the other end of the pawl (9) of each group of rotation limiting assemblies is inserted into the outer tooth surface of the ratchet wheel (8) of the same group of rotation limiting assemblies;
the double-sail-hub mounting frame is mounted on the lower side of the double-sail-hub mounting frame, double-sail-hub support mandrels (11) are respectively arranged on positions, corresponding to the double-sail-hub (5), of the double-sail-hub mounting frame, one double-sail-hub (6) is sleeved on each double-sail-hub support mandrel (11), two groups of solar-sail thin films (002) are wound on each double-sail-hub (6), each group of solar-sail thin films (002) are respectively and correspondingly connected with one sail truss support (7) on a sail truss A (0011) and a sail truss support (7) on a sail truss B (0012) adjacent to the sail truss A (0011), and each sail truss B (0012) and each adjacent sail truss A (0011) are respectively and correspondingly provided with solar-sail thin films (002).
2. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 1, wherein: the double-sailing-truss hub mounting frame comprises a frame top plate (12), a frame bottom plate (13) and a plurality of support columns (14), wherein each support column (14) is respectively supported and arranged between the frame top plate (12) and the frame bottom plate (13), the central transmission shaft (2) is rotatably arranged between the frame top plate (12) and the frame bottom plate (13), and the two sailing truss hubs (5) are respectively rotatably arranged on the frame bottom plate (13).
3. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 2, wherein: the positioning assembly comprises a plurality of guide rods (15), guide rod adjusting grooves (16) are formed in the frame top plate (12) and the frame bottom plate (13), the guide rod adjusting grooves (16) in the frame top plate (12) and the guide rod adjusting grooves (16) in the frame bottom plate (13) are located at positions close to the positions where the double-sail-truss hub mounting frame extends out of each of the double-sail-truss hub mounting frames, the setting positions of the guide rod adjusting grooves (16) in the frame top plate (12) and the setting positions of the guide rod adjusting grooves (16) in the frame bottom plate (13) are mutually corresponding up and down, one guide rod (15) is penetrated between each guide rod adjusting groove (16) which corresponds up and down, each guide rod (15) and one adjacent truss (14) form a sail extending outlet, and the outer side face of the corresponding truss (001) is limited.
4. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 2, wherein: the ratchet wheels (8) of each group of rotation limiting components are all arranged at the upper ends of the corresponding sail truss hubs (5), one ends of the pawls (9) of each group of rotation limiting components are connected to the upper side surface of the frame top plate (12) through torsion springs (10) of the group of rotation limiting components, and the upper side surface of the frame top plate (12) is also provided with upper end covers (17) used for covering the ratchet wheels (8) respectively.
5. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 1, wherein: the positioning assembly comprises a plurality of pressing plates (18) arranged on the inner side of the double-truss hub mounting frame, one end of each pressing plate (18) extends to a position close to one adjacent truss hub (5) and is provided with a pressing roller (19), and each pressing roller (19) is respectively abutted to the surface of a truss (001) coiled on the truss hub (5).
6. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 1, wherein: the stepping motor (1) is mounted on the double-sail truss hub mounting frame, a driving shaft of the stepping motor (1) drives the central transmission shaft (2) through a transmission gear set, the transmission gear set comprises a driving gear (20), an idler gear (21) and a driven gear (22), the driving gear (20) is mounted on the driving shaft of the stepping motor (1), the driven gear (22) is mounted on the central transmission shaft (2), the idler gear (21) is rotatably arranged on the double-sail truss hub mounting frame, and the idler gear (21) is meshed with the driving gear (20) and the driven gear (22) respectively.
7. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 1, wherein: the sail truss brackets (7) on each sail truss (001) are connected with the adjacent solar sail film (002) through tension springs (23).
8. A solar sail deployment mechanism employing a dual sail hub configuration as claimed in claim 1, wherein: the lower extreme of every sail truss wheel hub (5) all is connected with wind spring dish (24), the inboard of wind spring dish (24) is equipped with wind spring (25), one end of wind spring (25) with wind spring dish (24) are connected, the other end of wind spring (25) with adjacent one double-sail wheel hub supports dabber (11) and is connected.
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