CN114506475B - Sun wing spreading mechanism, power supply device and spacecraft - Google Patents
Sun wing spreading mechanism, power supply device and spacecraft Download PDFInfo
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- CN114506475B CN114506475B CN202110959455.6A CN202110959455A CN114506475B CN 114506475 B CN114506475 B CN 114506475B CN 202110959455 A CN202110959455 A CN 202110959455A CN 114506475 B CN114506475 B CN 114506475B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 230000007480 spreading Effects 0.000 title abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 84
- 230000000694 effects Effects 0.000 abstract description 13
- 230000009471 action Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
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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
- B64G1/443—Photovoltaic cell arrays
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Abstract
The invention discloses a solar wing spreading mechanism, a power supply device and a spacecraft, wherein the solar wing spreading mechanism comprises: a base; the unfolding component comprises an unfolding rod system and an elastic driving piece, one end of the unfolding rod system is connected with the base, and the elastic driving piece is arranged on the unfolding rod system; the base plate connecting piece is arranged at one end of the unfolding rod system far away from the base; the speed regulating component is arranged on the base and is matched with the unfolding rod system for speed regulation; the elastic driving piece is used for driving the unfolding rod system to unfold by means of the elastic force of the elastic driving piece, so that the substrate connecting piece moves towards the direction far away from the base, and the speed regulating assembly is used for providing balance force for the unfolding rod system in the unfolding process of the unfolding rod system. The solar wing spreading mechanism can solve the problem that when the spreading rod reaches the maximum spreading position, large impact is generated, and large negative effects are generated on related components and spacecrafts.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to a solar wing spreading mechanism, a power supply device and a spacecraft.
Background
The solar cell array is a main power supply device of a spacecraft, and the solar cell array widely used at present is a folding solar cell array with a rigid substrate, which is also called as a solar wing. With the development of aerospace technology, the demand of spacecraft on electric power is higher and higher, so that a large area is needed and a folded large solar wing can be loaded in a carrier rocket to provide main energy. Along with the increase of the area, the mass limitation of the rigid solar cell array becomes a prominent problem, and the flexible solar wing can effectively solve the problem due to the characteristics of light weight and larger folding-unfolding ratio.
In order to unfold the folded flexible solar wing, a unfolding mechanism is developed at present, which is unfolded by means of the elastic force of a spring, so that the flexible solar wing connected with the unfolding mechanism is unfolded, but when the flexible solar wing is unfolded by using the unfolding mechanism, the unfolding mechanism can generate large impact, and has large negative effects on related components and a spacecraft.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a solar wing unfolding mechanism which can avoid great negative effects on related components and a spacecraft in the unfolding process.
The invention also provides a power supply device with the solar wing spreading mechanism and a spacecraft.
A solar wing spreading mechanism according to an embodiment of a first aspect of the invention includes: a base; the unfolding component comprises an unfolding rod system and an elastic driving piece, one end of the unfolding rod system is connected with the base, and the elastic driving piece is arranged on the unfolding rod system; the base plate connecting piece is arranged at one end, far away from the base, of the unfolding rod system; the speed regulating component is arranged on the base and is matched with the unfolding rod system in a speed regulating way; the elastic driving piece is used for driving the unfolding rod system to unfold by means of the elastic force of the elastic driving piece so that the substrate connecting piece moves towards the direction far away from the base, and the speed regulating assembly is used for providing balance force for the unfolding rod system in the unfolding process of the unfolding rod system so that the substrate connecting piece moves towards the direction far away from the base at a constant speed.
The solar wing spreading mechanism provided by the embodiment of the invention has at least the following technical effects:
in the above-mentioned sun wing spreading mechanism, when the spreading bar system is spread under the action of the elastic driving member, that is, the elastic driving member is used for driving the spreading bar system to spread by means of its own elastic force, so that in the process that the substrate connecting member moves in the direction away from the base, the speed regulating assembly can provide a balancing force for the spreading bar system, prevent the speed of the spreading bar system from continuously increasing under the action of the elastic driving member, so that the spreading bar system is spread at a constant speed, and the substrate connecting member moves at a constant speed in the direction away from the base. Therefore, the problem that when the unfolding rod reaches the maximum unfolding position, large impact is generated, and large negative effects are generated on related components and the spacecraft can be solved.
According to some embodiments of the invention, the deployment rod system comprises a plurality of connecting rods connected to form a scissors structure, the scissors structure having a plurality of joints on both sides thereof, each joint on both sides of the scissors structure being provided with the elastic driving member;
the joint is a structure formed at the joint of the two connecting rods which are mutually and rotatably connected, and the elastic driving piece arranged at any one joint is used for driving the two connecting rods at the joint corresponding to the elastic driving piece to unfold.
According to some embodiments of the present invention, each of the joints at two sides of the scissors structure further includes a rotating shaft, in each of the joints at two sides of the scissors structure, end portions of two of the connecting rods are oppositely disposed, one end of the rotating shaft is rotatably connected to one of the connecting rods, and the other end of the rotating shaft is rotatably connected to the other connecting rod;
the elastic driving piece is a torsion spring, each torsion spring is sleeved outside the rotating shaft and used for providing elasticity for the two connecting rods at the joints corresponding to the torsion springs.
According to some embodiments of the present invention, all the connecting rods include a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the third connecting rod and the fourth connecting rod are arranged in a crossed manner, the third connecting rod and the fourth connecting rod are rotatably connected, the third connecting rod and the fourth connecting rod are matched to form a first crossed rod module, one end of the first connecting rod is rotatably connected with the base, the other end of the first connecting rod is connected with one end of the third connecting rod, one end of the second connecting rod is rotatably connected with the base, the other end of the second connecting rod is rotatably connected with the fourth connecting rod, the joint of the first connecting rod and the third connecting rod and the joint of the second connecting rod and the fourth connecting rod both form the joint, and the other end of the third connecting rod and the other end of the fourth connecting rod are directly or indirectly rotatably connected with the substrate connecting piece;
the speed regulation component is respectively matched with the first connecting rod and the second connecting rod in a speed regulation mode, and the speed regulation component is used for providing balance force for the first connecting rod and the second connecting rod in the unfolding process of the unfolding rod system.
According to some embodiments of the invention, the governor assembly comprises a governor source and a transmission unit in driving connection with the governor source, the transmission unit being in driving connection with the first and second links, respectively.
According to some embodiments of the present invention, the transmission unit includes a transmission module drivingly connected to the speed adjustment source, a first force transmission member fixedly disposed at an end of the first connecting rod rotatably connected to the base, and a second force transmission member fixedly disposed at an end of the second connecting rod rotatably connected to the base, and the transmission module is drivingly connected to the first force transmission member and the second force transmission member, respectively.
According to some embodiments of the invention, the first force transmission member is opposite to and spaced from the second force transmission member, a first transmission tooth is arranged on one side of the first force transmission member close to the second force transmission member, and a second transmission tooth is arranged on one side of the second force transmission member close to the first force transmission member;
the transmission module set up in first power transmission spare with between the second power transmission spare, the transmission module includes first gear and second gear, the speed governing source with first gear or second gear drive are connected, first gear with the second gear meshing, first gear is kept away from one side of second gear with first transmission tooth meshing, the second gear is kept away from one side of first gear with the second transmission tooth meshing, the speed governing source with first gear or the second gear drive is connected.
According to some embodiments of the present invention, the unfolding rod system further comprises a fifth link and a sixth link in all the links of the unfolding rod system, the fifth link and the sixth link are arranged in a mutually crossed manner, and the fifth link and the sixth link are rotatably connected, and the fifth link and the sixth link cooperate to form a second crossbar module;
the number of the second crossbar modules is multiple, the multiple groups of second crossbar modules are sequentially connected, in two adjacent groups of second crossbar modules, one end of the fifth connecting rod of one second crossbar module is rotatably connected with one end of the sixth connecting rod of the other second crossbar module, and one end of the sixth connecting rod of one second crossbar module is rotatably connected with one end of the fifth connecting rod of the other second crossbar module;
the first group of second crossbar modules are positioned at the head ends of all the second crossbar modules, and the last group of second crossbar modules are positioned at the tail ends of all the second crossbar modules; the fifth connecting rod and the fourth connecting rod in the first group of second cross rod modules are rotatably connected with one end, far away from the second connecting rod, of the fourth connecting rod, the sixth connecting rod and one end, far away from the first connecting rod, of the third connecting rod in the first group of second cross rod modules are rotatably connected, and one end, far away from the rest of the second cross rod modules, of the fifth connecting rod and one end, far away from the rest of the second cross rod modules, of the sixth connecting rod in the last group of second cross rod modules are both directly or indirectly rotatably connected with a substrate connecting piece.
According to a second aspect embodiment of the present invention, a power supply apparatus includes: the solar-wing spreading mechanism as described above; and the substrate of the flexible solar wing is fixedly connected with the substrate connecting piece.
According to the power supply device provided by the embodiment of the invention, at least the following technical effects are achieved:
in the above power supply device, when the unfolding bar system is unfolded under the action of the elastic driving member, that is, the elastic driving member is used for driving the unfolding bar system to unfold by means of its own elastic force, so that in the process that the substrate connecting member moves in the direction away from the base, the speed regulating assembly can provide a balancing force for the unfolding bar system to prevent the speed of the unfolding bar system from continuously increasing under the action of the elastic driving member, so that the unfolding bar system is unfolded at a constant speed, and the substrate connecting member moves at a constant speed in the direction away from the base. Therefore, the problem that when the unfolding rod reaches the maximum unfolding position, large impact is generated, and large negative effects are generated on related components and spacecrafts can be solved.
A spacecraft according to an embodiment of the third aspect of the invention comprises a power supply arrangement as described above.
The spacecraft provided by the embodiment of the invention at least has the following technical effects:
in the above spacecraft, when the unfolding rod system is unfolded under the action of the elastic driving member, that is, the elastic driving member is used for driving the unfolding rod system to unfold by means of the elastic force of the elastic driving member, so that in the process that the substrate connecting member moves in the direction away from the base, the speed regulating assembly can provide a balancing force for the unfolding rod system to prevent the speed of the unfolding rod system from continuously increasing under the action of the elastic driving member, so that the unfolding rod system is unfolded at a constant speed, and the substrate connecting member moves at a constant speed in the direction away from the base. Therefore, the problem that when the unfolding rod reaches the maximum unfolding position, large impact is generated, and large negative effects are generated on related components and the spacecraft can be solved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a solar wing opening mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partially enlarged structure at A of the graph shown in FIG. 1;
FIG. 3 is a schematic view of a portion of the graph shown in FIG. 1 at B;
fig. 4 is a partial structural schematic view of a solar wing opening mechanism according to an embodiment of the present invention.
Reference numerals are as follows:
100. a base;
200. deploying the assembly; 210. unfolding the rod system; 210a, a first crossbar module; 210b, a second crossbar module; 210b1, a head end second crossbar module; 210b2, a second crossbar module at the end; 211. a first link; 212. a second link; 213. a third link; 214. a fourth link; 215. a fifth link; 216. a sixth link; 217. a seventh connecting rod; 218. an eighth link; 220. an elastic driving member; 230. A joint;
300. a substrate connecting member;
400. a speed regulation component; 410. a speed regulation source; 420. a transmission unit; 421. a transmission module; 4211. a first gear; 4212. a second gear; 422. a first force transmission member; 4221. a first drive tooth; 423. a second force transmission member; 4231. a second gear.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, an embodiment relates to a solar wing unfolding mechanism, which includes a base 100, a unfolding assembly 200, a base plate connector 300, and a speed regulating assembly 400.
As shown in fig. 1 and 2, the unfolding assembly 200 includes an unfolding bar system 210 and an elastic driving member 220, wherein one end of the unfolding bar system 210 is connected to the base 100, the other end is connected to the substrate connector 300, and the elastic driving member 220 is disposed on the unfolding bar system 210; the speed regulating component 400 is arranged on the base 100 and is matched with the unfolding rod system 210 for speed regulation; the base plate connector 300 is used for connecting a base plate of a flexible solar wing, the elastic driving member 220 is used for driving the unfolding rod system 210 to unfold by means of the elastic force of the elastic driving member, so that the base plate connector 300 moves towards the direction far away from the base 100, and the speed regulating assembly 400 is used for providing balance force for the unfolding rod system 210 in the unfolding process of the unfolding rod system 210, so that the base plate connector 300 moves towards the direction far away from the base 100 at a constant speed.
First, it should be noted that the deployment linkage 210 uses the elastic driving member 220 as its power source, and the torque margin of the elastic driving member 220 needs to be ensured to enable the deployment linkage 210 to be deployed smoothly. According to hooke's law: when the elastic driving member 220 is elastically deformed, the elastic force F of the elastic driving member 220 is proportional to the deformation amount x of the elastic driving member 220, i.e. F = -k · x; where k is the elastic coefficient of the elastic driving member 220, which is determined only by the material properties, independent of other factors; the minus sign indicates that the spring force generated by the resilient actuator 220 is opposite to its direction of elongation (or compression). Because the flexible driving member 220 has sufficient torque margin to enable the unfolding rod system 210 to be unfolded smoothly, in the absence of the governor assembly 400, the flexible driving member 220 will cause the unfolding speed of the unfolding rod system 210 to increase with the increase of the unfolding distance (i.e. the unfolding speed of the unfolding rod system 210 will increase with the increase of the distance of the substrate connector 300 relative to the base 100), and when the unfolding rod system 210 reaches the maximum unfolding position, a large impact will be generated, which will have a large negative effect on the related components and the spacecraft.
In the above-mentioned sun wing spreading mechanism, when the spreading bar system 210 is spread under the action of the elastic driving member 220, that is, the elastic driving member 220 is used for driving the spreading bar system 210 to spread by its own elastic force, so that in the process that the substrate connecting member 300 moves in the direction away from the base 100, the speed regulating assembly 400 can provide a balancing force for the spreading bar system 210, prevent the speed of the spreading bar system 210 from continuously increasing under the action of the elastic driving member 220, so that the spreading bar system 210 is spread at a constant speed, so that the substrate connecting member 300 moves at a constant speed in the direction away from the base 100, and further, the flexible sun wing is spread at a constant speed. Therefore, the problem that when the unfolding rod system 210 reaches the maximum unfolding position, large impact is generated, and large negative effects are generated on related components and spacecrafts can be solved.
Further, after the unfolding bar system 210 drives the flexible solar wing to be completely unfolded, the speed regulating assembly 400 and the elastic driving member 220 can provide acting force for the unfolding bar system 210 together, so as to provide tension for tensioning the flexible solar wing, and prevent the flexible solar wing from being loosened.
It should be further noted that, at the initial stage of the unfolding linkage 210 under the action of the elastic driving member 220, the speed regulating assembly 400 is synchronously turned on, and the balancing force provided by the speed regulating assembly 400 for the unfolding linkage 210 is controllable, so that the unfolding linkage 210 can be ensured to be unfolded at a constant speed on the premise that the unfolding time of the flexible solar wing meets the requirement.
As shown in fig. 1 and 2, in one embodiment, the unfolding rod system 210 includes a plurality of links connected to form a scissors structure, and a plurality of joints 230 are formed at two sides of the scissors structure, where the joints 230 refer to a structure formed at the connection of two links, and specifically, each joint 230 includes the ends of two links rotatably connected to each other. Each joint located at two sides of the scissors structure is provided with an elastic driving member 220, and the elastic driving member 220 arranged at any one joint 230 is used for driving two connecting rods at the joint 230 corresponding to the elastic driving member 220 to unfold. In this manner, the deployment linkage 210 may be deployed by all of the resilient actuators 220.
As shown in fig. 2, more specifically, each of the joints 230 located at two sides of the scissors structure further includes a rotating shaft, in each of the joints located at two sides of the scissors structure, the ends of the two connecting rods are oppositely arranged, one end of the rotating shaft is rotatably connected with one of the connecting rods, and the other end is rotatably connected with the other connecting rod; the elastic driving member 220 is a torsion spring, and a torsion spring is sleeved outside each rotating shaft and used for providing elasticity for the two connecting rods at the joint 230 corresponding to the torsion spring, so that the included angle between the two connecting rods is increased, and the whole unfolding rod system 210 is unfolded.
As shown in fig. 1, in one embodiment, all the links include a first link 211, a second link 212, a third link 213, and a fourth link 214, the third link 213 and the fourth link 214 are disposed in an intersecting manner, the third link 213 and the fourth link 214 are rotatably connected, the third link 213 and the fourth link 214 cooperate to form a first intersecting rod module 210a, one end of the first link 211 is rotatably connected to the base 100, the other end of the first link 211 is connected to one end of the third link 213, one end of the second link 212 is rotatably connected to the base 100, the other end of the second link 212 is rotatably connected to the fourth link 214, joints are formed at the joint between the first link 211 and the third link 213 and at the joint between the second link 212 and the fourth link 214, and the other end of the third link 213 and the other end of the fourth link 214 are directly or indirectly rotatably connected to the substrate connector 300.
The speed regulating assembly 400 is respectively matched with the first connecting rod 211 and the second connecting rod 212 for speed regulation, the speed regulating assembly 400 is used for providing balance force for the first connecting rod 211 and the second connecting rod 212 in the unfolding process of the unfolding rod system 210, so that the first connecting rod 211 and the second connecting rod 212 are gradually closed in a mode of unchanging the speed, and in the process of gradually closing the first connecting rod 211 and the second connecting rod 212, the speed of the first connecting rod 211 is the same as that of the second connecting rod 212. By providing a balancing force to the first link 211 and the second link 212, the first link 211 and the second link 212 are gradually closed in a constant speed manner, so that the entire unfolding linkage 210 can be unfolded at a constant speed.
As shown in fig. 3 and 4, in particular, the governor assembly 400 includes a governor source 410 and a transmission unit 420 in driving connection with the governor source 410, and the transmission unit 420 is in driving connection with the first link 211 and the second link 212, respectively. The speed regulation source 410 is used to provide power to the transmission unit 420 such that the transmission unit 420 provides a balanced force to the first link 211 and the second link 212.
Further, the transmission unit 420 includes a transmission module 421 drivingly connected to the speed adjusting source 410, a first force transmission member 422 fixedly disposed at one end of the first connecting rod 211 rotatably connected to the base 100, and a second force transmission member 423 fixedly disposed at one end of the second connecting rod 212 rotatably connected to the base 100, wherein the transmission module 421 is drivingly connected to the first force transmission member 422 and the second force transmission member 423, respectively.
Furthermore, the first force transmission member 422 and the second force transmission member 423 are disposed opposite to each other at an interval, a first transmission tooth 4221 is disposed on a side of the first force transmission member 422 close to the second force transmission member 423, a second transmission tooth 4231 is disposed on a side of the second force transmission member 423 close to the first force transmission member 422, the transmission module 421 is disposed between the first force transmission member 422 and the second force transmission member 423, the transmission module 421 includes a first gear 4211 and a second gear 4212, the first gear 4211 is engaged with the second gear 4212, the first gear 4211 is disposed on a side of the second gear 4212 close to the first force transmission member 422, a side of the first gear 4211 away from the second gear 4212 is engaged with the first transmission tooth 4221, a side of the second gear 4212 away from the first gear 4211 is engaged with the second transmission tooth 4231, and the speed regulation source 410 is in driving connection with the first gear 4211 or the second gear 4212.
Specifically, the speed regulation source 410 is a motor, and an output shaft of the motor is fixedly inserted into the first gear 4211. In the process of unfolding the unfolding rod system 210, the first connecting rod 211 and the second connecting rod 212 rotate in the direction of closing each other, and when the first connecting rod 211 and the second connecting rod 212 rotate, the first gear 4211 and the second gear 4212 are driven to rotate by the first force transmission member 422 and the second force transmission member 423, respectively. When the motor is started, the motor can provide a rotating balance force for the first gear 4211, so that the first connecting rod 211 and the second connecting rod 212 are gradually closed in a mode of keeping the speed constant. Of course, in other embodiments, the output shaft of the motor is fixedly disposed through the second gear 4212.
More specifically, one side of the first force transmission member 422 close to the second force transmission member 423 is a tooth-shaped structure arranged in an arc shape, and one side of the second force transmission member 423 close to the first force transmission member 422 is also a tooth-shaped structure arranged in an arc shape.
Further, the first force transmission piece 422 and the second force transmission piece 423 have the same size, and the first gear 4211 and the second gear 4212 have the same size, so that when the motor is started, the first connecting rod 211 and the second connecting rod 212 can be ensured to have the same speed in the process of gradually closing.
It should be noted that the initial rotation speed of the motor may be determined according to a requirement, and by controlling the initial rotation speed of the motor, the uniform speed of the first connecting rod 211 and the second connecting rod 212 may be controlled to approach each other, so as to ensure the uniform speed of the unfolding bar system 210, thereby controlling the unfolding duration of the unfolding bar system 210.
As shown in fig. 1, in one embodiment, among all the links of the unfolding link system 210, a fifth link 215 and a sixth link 216 are further included, the fifth link 215 and the sixth link 216 are disposed to intersect with each other, the fifth link 215 and the sixth link 216 are rotatably connected, and the fifth link 215 and the sixth link 216 cooperate to form a second crossbar module 210b;
the number of the second crossbar modules 210b is multiple, and the multiple sets of the second crossbar modules 210b are connected in sequence, in two adjacent second crossbar modules 210b, one end of the fifth link 215 of one second crossbar module 210b is rotatably connected with one end of the sixth link 216 of the other second crossbar module 210b, and one end of the sixth link 216 of one second crossbar module 210b is rotatably connected with one end of the fifth link 215 of the other second crossbar module 210 b.
Among the sets of second crossbar modules 210b are a first set of second crossbar modules 210b1 located at the head end of all of the second crossbar modules 210b, and a last set of second crossbar modules 210b2 located at the tail end of all of the second crossbar modules 210 b. The fifth link 215 of the first set of second crossbar modules 210b1 is pivotally connected to the end of the fourth link 214 away from the second link 212, the sixth link 216 of the first set of second crossbar modules 210b1 is pivotally connected to the end of the third link 213 away from the first link 211, and the end of the fifth link 215 of the last set of second crossbar modules 210b2 away from the remaining second crossbar modules 210b1 and the end of the sixth link 216 away from the remaining second crossbar modules 210b1 are both pivotally connected to the substrate connection 300, either directly or indirectly.
More specifically, among all the links of the unfolding bar system 210, a seventh link 217 and an eighth link 218 are further included, one end of the seventh link 217 is rotatably connected to one end of the sixth link 216 of the last group of the second crossbar modules 210b, which is far from the other second crossbar modules 210b, the other end of the seventh link 217 is rotatably connected to the substrate connector 300, one end of the eighth link 218 is rotatably connected to one end of the fifth link 215 of the last group of the second crossbar modules 210b2, which is far from the other second crossbar modules 210b, and the other end of the eighth link 218 is rotatably connected to the substrate connector 300.
As shown in fig. 1, an embodiment further relates to a power supply device, which includes the above-mentioned solar wing spreading mechanism and a flexible solar wing, wherein the solar wing spreading mechanism is fixedly connected to a substrate of the flexible solar wing.
In the above sun wing unfolding mechanism, when the unfolding bar system 210 is unfolded by the elastic driving member 220, that is, the elastic driving member 220 is used for driving the unfolding bar system 210 to unfold by means of its own elastic force, so that in the process of moving the substrate connector 300 away from the base 100, the speed regulating assembly 400 can provide a balancing force for the unfolding bar system 210, so as to prevent the speed of the unfolding bar system 210 from increasing continuously by the elastic driving member 220, so that the unfolding bar system 210 is unfolded at a constant speed, so that the substrate connector 300 moves at a constant speed away from the base 100. Therefore, the problem that when the unfolding rod system 210 reaches the maximum unfolding position, large impact is generated, and large negative effects are generated on related components and spacecrafts can be solved.
An embodiment also relates to a spacecraft comprising a power supply device as described above.
In the above-mentioned sun wing spreading mechanism, when the spreading bar system 210 is spread under the action of the elastic driving member 220, that is, the elastic driving member 220 is used for driving the spreading bar system 210 to spread by its own elastic force, so that the substrate connecting member 300 moves in the direction away from the base 100, the speed regulating assembly 400 can provide a balancing force for the spreading bar system 210, so as to prevent the speed of the spreading bar system 210 from increasing continuously under the action of the elastic driving member 220, so that the spreading bar system 210 is spread at a constant speed, so as to make the substrate connecting member 300 move at a constant speed in the direction away from the base 100. Thus, the problem that when the unfolding rod system 210 reaches the maximum unfolding position, large impact is generated, and large negative effects are generated on the related components and the spacecraft can be solved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A sun wing opening mechanism, comprising:
a base;
the unfolding component comprises an unfolding rod system and an elastic driving piece, one end of the unfolding rod system is connected with the base, and the elastic driving piece is arranged on the unfolding rod system;
the base plate connecting piece is arranged at one end, far away from the base, of the unfolding rod system;
the speed regulating component is arranged on the base and is matched with the unfolding rod system in a speed regulating way;
the elastic driving part is used for driving the unfolding rod system to unfold by means of the elasticity of the elastic driving part so as to enable the substrate connecting part to move towards the direction far away from the base, and the speed regulating assembly is used for providing balanced force for the unfolding rod system in the unfolding process of the unfolding rod system so as to enable the substrate connecting part to move towards the direction far away from the base at a constant speed;
the unfolding rod system comprises a plurality of connecting rods, the connecting rods comprise a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the third connecting rod and the fourth connecting rod are arranged in a crossed mode and are rotatably connected, the third connecting rod and the fourth connecting rod are matched to form a first crossed rod module, one end of the first connecting rod is rotatably connected with the base, the other end of the first connecting rod is connected with one end of the third connecting rod, one end of the second connecting rod is rotatably connected with the base, the other end of the second connecting rod is rotatably connected with the fourth connecting rod, joints are formed at the connection position of the first connecting rod and the third connecting rod and the connection position of the second connecting rod and the fourth connecting rod, the other end of the third connecting rod and the other end of the fourth connecting rod are directly or indirectly rotatably connected with the base plate connecting piece, and all joints are provided with the elastic driving piece;
the speed regulation component is respectively matched with the first connecting rod and the second connecting rod in a speed regulation mode, and the speed regulation component is used for providing balance force for the first connecting rod and the second connecting rod in the unfolding process of the unfolding rod system.
2. The sun wing opening mechanism according to claim 1, wherein the governor assembly includes a governor source and a transmission unit in driving connection with the governor source, the transmission unit being in driving connection with the first and second links, respectively.
3. The sun wing opening mechanism according to claim 2, wherein the transmission unit comprises a transmission module drivingly connected to the speed regulation source, a first force transmission member fixedly disposed at an end of the first link rotatably connected to the base, and a second force transmission member fixedly disposed at an end of the second link rotatably connected to the base, the transmission module being drivingly connected to the first force transmission member and the second force transmission member, respectively.
4. The solar span opening mechanism of claim 3 wherein the first force transmission member is spaced apart from and opposite to the second force transmission member, the first force transmission member having a first transmission tooth on a side thereof adjacent to the second force transmission member, the second force transmission member having a second transmission tooth on a side thereof adjacent to the first force transmission member;
the transmission module set up in first power transmission spare with between the second power transmission spare, the transmission module includes first gear and second gear, the speed governing source with first gear or second gear drive are connected, first gear with the second gear meshing, first gear is kept away from one side of second gear with first transmission tooth meshing, the second gear is kept away from one side of first gear with the second transmission tooth meshing, the speed governing source with first gear or the second gear drive is connected.
5. The solar span opening mechanism according to claim 1, further comprising a fifth link and a sixth link among all the links of the unfolding bar system, wherein the fifth link and the sixth link are disposed to intersect with each other and are rotatably connected, and the fifth link and the sixth link cooperate to form a second intersecting bar module;
the number of the second crossbar modules is multiple, the multiple groups of second crossbar modules are sequentially connected, in two adjacent groups of second crossbar modules, one end of the fifth connecting rod of one second crossbar module is rotatably connected with one end of the sixth connecting rod of the other second crossbar module, and one end of the sixth connecting rod of one second crossbar module is rotatably connected with one end of the fifth connecting rod of the other second crossbar module;
the first group of the second crossbar modules are positioned at the head ends of all the second crossbar modules, and the last group of the second crossbar modules are positioned at the tail ends of all the second crossbar modules; the fifth connecting rod and the fourth connecting rod in the first group of second cross rod modules are rotatably connected with one end, far away from the second connecting rod, of the fourth connecting rod, the sixth connecting rod and one end, far away from the first connecting rod, of the third connecting rod in the first group of second cross rod modules are rotatably connected, and one end, far away from the rest of the second cross rod modules, of the fifth connecting rod and one end, far away from the rest of the second cross rod modules, of the sixth connecting rod in the last group of second cross rod modules are both directly or indirectly rotatably connected with a substrate connecting piece.
6. A power supply device, comprising:
the solar wing opening mechanism of any one of claims 1 to 5; and
and the substrate of the flexible solar wing is fixedly connected with the substrate connecting piece.
7. A spacecraft comprising a power supply device as claimed in claim 6.
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| CN202110959455.6A CN114506475B (en) | 2021-08-20 | 2021-08-20 | Sun wing spreading mechanism, power supply device and spacecraft |
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| CN202110959455.6A CN114506475B (en) | 2021-08-20 | 2021-08-20 | Sun wing spreading mechanism, power supply device and spacecraft |
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| CN114506475B true CN114506475B (en) | 2022-11-11 |
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| CN115402535B (en) * | 2022-10-10 | 2024-01-30 | 重庆开拓卫星科技有限公司 | Repeated folding mechanism of double-layer flexible solar wing |
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| CN113086248A (en) * | 2021-03-26 | 2021-07-09 | 中国空间技术研究院 | Flexible solar wing with scissor type unfolding mechanism |
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| CN105347246A (en) * | 2015-12-03 | 2016-02-24 | 电子科技大学 | Shear-fork type lifting platform with wheel train transmission |
| CN105501468A (en) * | 2015-12-15 | 2016-04-20 | 浙江理工大学 | Unfolding mechanism of flexible solar wing for space station |
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