CN116280173A - Active folding mechanism of aerocar wing based on shape memory alloy - Google Patents
Active folding mechanism of aerocar wing based on shape memory alloy Download PDFInfo
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- CN116280173A CN116280173A CN202310398126.8A CN202310398126A CN116280173A CN 116280173 A CN116280173 A CN 116280173A CN 202310398126 A CN202310398126 A CN 202310398126A CN 116280173 A CN116280173 A CN 116280173A
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 122
- 230000007246 mechanism Effects 0.000 title claims abstract description 48
- 239000000178 monomer Substances 0.000 claims description 6
- SAZUGELZHZOXHB-UHFFFAOYSA-N acecarbromal Chemical compound CCC(Br)(CC)C(=O)NC(=O)NC(C)=O SAZUGELZHZOXHB-UHFFFAOYSA-N 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003446 memory effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/38—Adjustment of complete wings or parts thereof
- B64C3/56—Folding or collapsing to reduce overall dimensions of aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
- B60F5/00—Other convertible vehicles, i.e. vehicles capable of travelling in or on different media
- B60F5/02—Other convertible vehicles, i.e. vehicles capable of travelling in or on different media convertible into aircraft
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
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Abstract
The invention discloses an active folding mechanism of a flying automobile wing based on shape memory alloy, which realizes folding or unfolding of the flying automobile wing through the cooperation of a plurality of rotating wheels and a plurality of memory alloy wires. When the aerocar needs to fold the wing, the memory alloy wires are electrified and heated in a certain sequence, so that the memory alloy wires shrink, and the folding mechanism is pulled to rotate for a certain angle, and the wing is driven to rotate for a certain angle, so that the purpose of folding the wing is achieved; when the aerocar needs to take off, the memory alloy wire on the other side is heated to rotate in the opposite direction of the folding mechanism, and under the combined action of gravity, the wing is unfolded and locked, so that the wing is unfolded. The folding mechanism of the active folding mechanism of the aerocar wing based on the shape memory alloy has a simple structure, does not need to add a heavy and complex hydraulic system or motor, greatly lightens the weight of the aerocar and promotes the lightweight development of the aerocar.
Description
Technical Field
The invention belongs to the technical field of intellectualization and light weight of automobile bodies, and particularly relates to an active folding mechanism of a flying automobile wing based on a shape memory alloy.
Background
In the next decade, with the rapid increase of world population and the improvement of economic level, the demand of human beings for automobiles is rapidly increased, and the problem of ground traffic jam is more serious. A new kind of traffic tool, namely, flying car, has been developed. The fixed wing type aerocar not only can influence the normal running of other automobiles due to the oversized wing, but also the wing is easily influenced by road obstacles. Therefore, folding wings are now one of the trends in the development of aerocars.
The existing wing folding mechanism is complex in mechanical structure, is driven by a hydraulic system and a motor generally, occupies a large space, is heavy, is unfavorable for the lightweight design of a flying car, and can be affected by electromagnetism. While the requirement for weight reduction is high for a flying car, many challenges are presented to the design of the folding wing.
Disclosure of Invention
The invention aims to provide a flying car wing active folding mechanism based on shape memory alloy, which has a simple structure, does not need to be driven by a motor, can effectively lighten the weight of a flying car, and is not easily influenced by electromagnetism.
The technical scheme provided by the invention is as follows:
a shape memory alloy based active folding mechanism for a wing of a flying vehicle, comprising:
a housing;
the two sliding grooves are symmetrically formed in two opposite side walls of the shell, and the sliding grooves are arranged along the axial direction of the shell;
the fixed shaft is arranged in the shell, and two ends of the fixed shaft respectively penetrate through the two sliding grooves and can translate along the sliding grooves;
wherein the axial direction of the fixed shaft is perpendicular to the axial direction of the shell;
a rotating shaft provided in the housing and spaced apart from the fixed shaft in parallel; the two ends of the rotating shaft respectively penetrate through the two side walls of the shell and are rotatably supported on the side walls;
one end of the wing is fixedly connected with the rotating shaft;
at least one set of wheel mechanisms disposed within the housing, comprising:
the fixed wheel is coaxially connected with the fixed shaft and synchronously moves with the fixed shaft;
the first rotating wheel is rotatably coaxially sleeved on the fixed shaft;
the second rotating wheel is rotatably coaxially sleeved on the fixed shaft, is connected with the first rotating wheel and synchronously rotates with the first rotating wheel;
a third wheel rotatably coaxially arranged on the rotating shaft and corresponding to the position of the fixed wheel;
the fourth rotating wheel is rotatably coaxially sleeved on the rotating shaft, is connected with the third rotating wheel and synchronously rotates with the third rotating wheel; the fourth wheel corresponds to the position of the first wheel;
a fifth wheel coaxially connected with the rotation shaft and corresponding to the position of the second wheel; the rotating shaft and the fifth rotating wheel synchronously rotate;
two first memory alloy wires, wherein two ends of each first memory alloy wire are fixedly connected with the outer edge of the fixed wheel and the outer edge of the third rotating wheel respectively, and the two first memory alloy wires are arranged close to the top and the bottom of the shell respectively;
two second memory alloy wires, wherein two ends of the second memory alloy wires are fixedly connected with the outer edge of the first rotating wheel and the outer edge of the fourth rotating wheel respectively, and the two second memory alloy wires are arranged close to the top and the bottom of the shell respectively;
two third memory alloy wires, wherein two ends of the third memory alloy wires are fixedly connected with the outer edge of the second rotating wheel and the outer edge of the fifth rotating wheel respectively, and the two third memory alloy wires are arranged close to the top and the bottom of the shell respectively;
each first memory alloy wire, each second memory alloy wire and each third memory alloy wire can be respectively electrified and heated, so that the memory alloy wires are shortened, different rotating wheels are driven to rotate, and the rotation of the rotating wheels is transmitted to the rotating shaft to realize the folding or unfolding of the wing.
Preferably, the active folding mechanism of the aerocar wing based on the shape memory alloy further comprises:
the two sliding tables are fixedly connected to the outer sides of the two side plates of the shell respectively; two ends of the fixed shaft are respectively connected with the two sliding tables;
wherein, the slip table includes: a linear guide rail and a sliding block; the linear guide rail is arranged along the axial direction of the shell, and the end part of the fixed shaft is fixedly connected to the sliding block.
Preferably, a sliding block locking mechanism is arranged on the sliding table, and the sliding block can be locked on the linear guide rail.
Preferably, the diameters of the first memory alloy wire, the second memory alloy wire and the third memory alloy wire are 0.5mm to 1mm.
Preferably, the maximum stretching ratio of the first memory alloy wire, the second memory alloy wire and the third memory alloy wire is 5% -10%.
Preferably, two connecting blocks are fixedly arranged on the outer circumferences of the fixed wheel, the first rotating wheel, the second rotating wheel, the third rotating wheel, the fourth rotating wheel and the fifth rotating wheel, and the two connecting blocks are oppositely arranged along the radial direction of the corresponding fixed wheel or rotating wheel;
wherein, the memory alloy wire is connected in the connecting block.
Preferably, each of the first, second and third memory alloy wires is composed of a plurality of memory alloy wire monomers, respectively;
wherein, a plurality of memory alloy wire monomer parallel interval sets up.
Preferably, a fixed wheel disc is coaxially and fixedly connected to the fixed shaft, one side of the fixed wheel disc is fixedly provided with a plurality of first protruding parts, the first protruding parts are arc-shaped, and the plurality of first protruding parts are arrayed along the circumference of the fixed wheel disc;
a plurality of second protruding parts are arranged on one side of the fixed wheel, the second protruding parts are arc-shaped, and the second protruding parts are arranged along the circumferential array of the fixed wheel;
the first protruding parts are meshed with the second protruding parts, so that the fixed wheel is connected with the fixed wheel disc.
Preferably, the connection structure of the first rotating wheel and the second rotating wheel and the connection structure of the third rotating wheel and the fourth rotating wheel are the same as the connection structure of the fixed wheel and the fixed wheel disc.
Preferably, two ends of each memory alloy wire are respectively connected with a wire, and the wires at two ends are respectively connected with the positive electrode and the negative electrode of the power supply.
The beneficial effects of the invention are as follows:
according to the shape memory alloy-based active folding mechanism for the aerocar wing, provided by the invention, the shape memory effect of the shape memory alloy is adopted to replace motor driving, so that the electromagnetic influence can be reduced, the driving is more stable, the driving structure is simplified, and the lightweight of the aerocar is more facilitated.
The active folding mechanism for the aerocar wings based on the shape memory alloy provided by the invention can enable the aerocar wings to be folded at a higher speed and a larger angle, so that the aerocar occupies a small area when running or stopping on land, and the wingspan opening time is shorter and more convenient when the aerocar needs to fly.
Drawings
Fig. 1 is a schematic general structural view of an active folding mechanism for a wing of a flying automobile according to the present invention.
Fig. 2 is a front view of an active folding mechanism for a wing of a flying vehicle according to the present invention.
Fig. 3 is a top view of an active folding mechanism for a wing of a flying car according to the present invention.
Fig. 4-5 are schematic structural views of the fixed wheel according to the present invention.
Fig. 6 is a schematic structural view of a fixing shaft according to the present invention.
Fig. 7 is a schematic diagram of the cooperation structure of the fixed shaft (rotating shaft) with the fixed wheel and each rotating wheel according to the present invention.
Fig. 8 is a schematic structural view of the sliding table according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1-8, the present invention provides an active folding mechanism for a wing of an aerocar based on a shape memory alloy, which mainly comprises: a housing 110, a fixed shaft 120, a rotating shaft 130 and a turning wheel mechanism.
The housing 110 is a rectangular housing, two sliding grooves 111 are symmetrically formed on two opposite sidewalls of the housing 110, and the sliding grooves 111 are disposed along an axial direction of the housing 110.
The body of the fixed shaft 120 is disposed in the inner cavity of the housing 110, and both ends of the fixed shaft 120 pass through the two sliding grooves 111, respectively, and can translate along the sliding grooves 111. Wherein, the axial direction of the fixed shaft 120 is perpendicular to the axial direction of the housing 110.
The main body of the rotating shaft 130 is arranged in the inner cavity of the shell 110, and the rotating shaft 130 is arranged in parallel with the fixed shaft 120 at intervals; the rotation shaft 130 has both ends passing through both sidewalls of the housing 110, respectively, and is rotatably supported on the sidewalls. One end of the wing (not shown) is fixedly connected to the rotation shaft 130, and rotates in synchronization with the rotation shaft 130.
One or more sets of wheel mechanisms disposed within the housing. Wherein a set of said wheel mechanisms comprises: the fixed wheel 141, the first wheel 142, the second wheel 143, the third wheel 144, the fourth wheel 145, the fifth wheel 146, two first memory alloy wires 151, two second memory alloy wires 152, and two third memory alloy wires 153.
The fixed sheave 141 is coaxially coupled to the fixed shaft 120 and moves in synchronization with the fixed shaft 120. The first rotating wheel 142 is coaxially sleeved on the fixed shaft 120 and can rotate relative to the fixed shaft 120. The second rotating wheel 143 is coaxially coupled to the fixed shaft 120 and is rotatable with respect to the fixed shaft 120. Meanwhile, the second rotating wheel 143 is connected to the first rotating wheel 142 and rotates in synchronization with the first rotating wheel 142. The third wheel 144 may be coaxially coupled to the rotating shaft 130 and may be rotatable relative to the rotating shaft 130. Wherein the third rotating wheel 144 corresponds to the position of the fixed wheel 141 (position in the lateral direction of the housing 110), and an outer edge (outer circumference) of the third rotating wheel 144 and an outer edge of the fixed wheel 141 have a space therebetween. The fourth rotating wheel 145 is coaxially coupled to the rotating shaft 130 and is rotatable with respect to the rotating shaft 130. The fourth wheel 145 is connected to the third wheel 144 and rotates in synchronization with the third wheel 144. Wherein the fourth wheel 145 corresponds to the position of the first wheel 142 (position in the lateral direction of the housing 110), and an outer edge (outer circumference) of the fourth wheel 145 and an outer edge of the first wheel 142 have a space therebetween. The fifth wheel 146 is coaxially connected to the rotation shaft 130, the fifth wheel 146 corresponds to the position of the second wheel 143 (position in the lateral direction of the housing 110), and an outer edge (outer circumference) of the fifth wheel 146 and an outer edge of the second wheel 143 have a space therebetween. Wherein the rotation shaft 130 rotates in synchronization with the fifth wheel 146.
The two ends of the first memory alloy wires 151 are fixedly connected with the outer edges of the fixed wheel 141 and the third wheel 144, respectively, and the two first memory alloy wires 151 are disposed near the top and bottom of the housing 110, respectively.
The two ends of the second memory alloy wire 152 are fixedly connected to the outer edges of the first and fourth rotating wheels 142 and 145, respectively, and the two second memory alloy wires 152 are disposed near the top and bottom of the housing 110, respectively.
The two ends of the third memory alloy wires 153 are fixedly connected to the outer edges of the second runner 143 and the fifth runner 146, respectively, and the two third memory alloy wires 153 are disposed near the top and bottom of the housing 110, respectively.
Wherein, the two ends of each of the first memory alloy wire 151, the second memory alloy wire 152 and the third memory alloy wire 153 are respectively connected with wires, and are respectively connected with the positive electrode and the negative electrode of the power supply through the wires at the two ends. Each first memory alloy wire 151, each second memory alloy wire 152 and each third memory alloy wire 153 can be respectively electrified and heated, the heated memory alloy wires are shortened, different rotating wheels are driven to rotate, and the rotation of the rotating wheels is transmitted to the rotating shaft 130, so that the wing is folded or unfolded.
In one embodiment, two connection blocks 140a are fixedly disposed on the outer circumferences of the fixed wheel 141, the first rotating wheel 142, the second rotating wheel 143, the third rotating wheel 144, the fourth rotating wheel 145 and the fifth rotating wheel 146, and the two connection blocks 140a are disposed opposite to each other along the radial direction of the corresponding fixed wheel or rotating wheel. Wherein the memory alloy wire is connected in the connection block 140 a.
As shown in fig. 4 to 5, taking the fixed sheave 141 as an example, two connection blocks 140a on the fixed sheave 141 are respectively located on the outer circumference of the fixed sheave 141, and the two connection blocks 140a are oppositely disposed in the radial direction of the fixed sheave 141. The fixing block 141 is provided with a through hole along the axial direction of the housing 110, and the end of the first memory alloy wire 153 is inserted into the through hole and fixed on the fixing block 141 by a copper hoop. The first rotating wheel 142, the second rotating wheel 143, the third rotating wheel 144, the fourth rotating wheel 145 and the fifth rotating wheel 146 are identical to the fixed wheel 141 in structure, size and connection manner with the memory alloy wire, and will not be described again here.
As shown in fig. 4 to 6, in one embodiment, a fixed wheel 121 is coaxially and fixedly connected to the fixed shaft 120, one side of the fixed wheel 121 is fixedly provided with a plurality of first protrusions 121a, the first protrusions 121a are arc-shaped, and the plurality of first protrusions 121a are arrayed along the circumferential direction of the fixed wheel 121. One side of the fixed sheave 141 is provided with a plurality of second bosses 141a, the second bosses 141a are arc-shaped, and the plurality of second bosses 141a are arrayed along the circumferential direction of the fixed sheave 141. The first protrusions 121a are engaged with the second protrusions 141a, so that the fixed wheel 141 is connected with the fixed wheel 121, that is, the fixed shaft 120 is connected with the fixed wheel 141, and moves synchronously.
The connection structure (manner) of the first rotating wheel 142 and the second rotating wheel 143, and the connection structure (manner) of the third rotating wheel 144 and the fourth rotating wheel 145 are the same as the connection structure (manner) of the fixed wheel 141 and the fixed wheel disc 121. Correspondingly, the connection structure (manner) of the rotation shaft 130 and the fifth wheel 146 is the same as the connection structure (manner) of the fixed shaft 120 and the fixed wheel 141. That is, the manner of matching the fixed shaft 120 with the fixed pulley 141, the first pulley 142, and the second pulley 143, and the manner of matching the rotation shaft 130 with the third rotation shaft 144, the fourth rotation shaft 145, and the fifth rotation shaft 146 are shown in fig. 7.
In other embodiments, the fixed wheel 120 and the fixed wheel 141, the first rotating wheel 142 and the second rotating wheel 143, the third rotating wheel 144 and the fourth rotating wheel 145, and the rotating shaft 130 and the fifth rotating wheel 146 may be fixedly connected by welding or bolting, so long as the two connected structures can move synchronously.
Preferably, the diameters of the first, second and third memory alloy wires 151, 152 and 153 are all 0.5mm to 1mm.
As a further preferred, the maximum elongation of the first, second and third memory alloy wires 151, 152 and 153 is 5% to 10%.
In another embodiment, each of the first, second and third memory alloy wires 151, 152 and 153 is composed of a plurality of memory alloy wire monomers, respectively; wherein, a plurality of memory alloy wire monomer parallel interval sets up. This arrangement can increase the driving force and improve the heat dissipation effect.
Preferably, the first, second and third memory alloy wires 151, 152 and 153 are nickel-titanium based shape memory alloy wires,
preferably, the active folding mechanism of the aerocar wing based on the shape memory alloy further comprises a pre-stretching device, which comprises two sliding tables 160. The two sliding tables 160 are fixedly connected to the outer sides of the two side plates of the housing 110 respectively and are positioned at the lower side of the sliding groove 111; two ends of the fixed shaft 120 are connected to two sliding tables 160, respectively. As shown in fig. 8, a linear guide 161 and a slider 162 are provided in the slide table 160, the linear guide 161 is provided along the axial direction of the housing 110, and both ends of the fixed shaft 120 are fixedly connected to the sliders 162 of the two slide tables by bolts, respectively. The slide table 160 is provided with a slider lock mechanism capable of locking the slider 162 at an arbitrary position on the linear guide 161.
The working process of the flying automobile wing active folding mechanism based on the shape memory alloy is as follows: the sliding table 160 is controlled, the sliding block 162 is moved along the linear guide rail 161, the fixed shaft 120 is driven to move towards the direction away from the rotating shaft 130, after the memory alloy wire is stretched by 3% -4%, the sliding block 162 is locked through the sliding block locking mechanism, and the pretensioning of the memory alloy wire is completed. First, the first memory alloy wire 151 above the fixing wheel 141 and the third wheel 144 is electrically heated, and the first memory alloy wire 151 contracts to drive the third wheel 144 and the fourth wheel 145 to rotate together, thereby driving the first wheel 142 and the second wheel 143 to rotate, and finally, the fifth wheel 146 and the rotating shaft 130 to rotate, which is the first heating, and the final rotating effect is displayed on the rotating shaft 130. In the second step, the second memory alloy wire 152 below the first rotating wheel 142 and the fourth rotating wheel 145 is electrically heated, and the second memory alloy wire 152 contracts to drive the first rotating wheel 142 and the second rotating wheel 143 to rotate, so that the fifth rotating wheel 146 and the rotating shaft 130 rotate, and the final rotating effect is also shown on the rotating shaft 130 due to the second heating. In the third step, the third memory alloy wire 153 above the second rotating wheel 143 and the fifth rotating wheel 146 is energized, and the third memory alloy wire 153 contracts, thereby rotating the fifth rotating wheel 146 and the rotating shaft 130. From the above process discussion, it can be found that the rotation effect formed by heating the memory alloy wire three times is finally reflected on the rotation shaft 130, so that superposition of the rotation effect is realized, and the rotation shaft 130 is connected with the wing, so that large-angle folding of the wing can be realized relatively lightly and with smaller force. When the reverse rotation (wing deployment) is required, the first memory alloy wire 151 below the fixed wheel 141 and the third wheel 144, the second memory alloy wire 152 above the first wheel 142 and the fourth wheel 145, and the third memory alloy wire 153 below the second wheel 143 and the fifth wheel 146 are heated in sequence, and the analysis process is the same as the above.
In one embodiment, a set of turning wheel mechanisms is provided, the radii of the fixed wheel 120 and the fixed wheel 141, the first turning wheel 142 and the second turning wheel 143, the third turning wheel 144 and the fourth turning wheel 145, the rotating shaft 130 and the fifth turning wheel 146 are all set to 20mm, and the lengths of the first memory alloy wire 151, the second memory alloy wire 152 and the third memory alloy wire 153 are set to between 262mm and 349 mm. Two ends of the 6 memory alloy wires are respectively connected to the positive electrode and the negative electrode of the controllable constant-current constant-voltage power supply through wires, and the PID controller is used for controlling the heating time to realize the sequential heating of the memory alloy wires, so that the wing is folded or unfolded. The shrinkage of the corresponding memory alloy wire is about 10.47mm in each heating process, the rotation angle of the rotation shaft 130 is 30 DEG, and the rotation angle of the rotation shaft 130 is 90 DEG after three heating processes
In other embodiments, multiple groups of runner mechanisms are arranged, and the rotations of the multiple groups of runner mechanisms are overlapped together, so that the wing can be folded at a larger angle by using shorter memory alloy wires.
The shape memory alloy has shape memory effect, and can convert heat energy into mechanical energy by controlling the external temperature and further controlling the deformation of the shape memory alloy. The folding mechanism is used as a driving element of a folding mechanism of a wing of a flying automobile, and can realize folding and unfolding of the driving wing by combining a mechanical structure. When the aerocar needs to fold the wing, the control unit controls the memory alloy wires to heat in a certain sequence and with certain current, so that the memory alloy wires shrink, and the folding mechanism is pulled to rotate for a certain angle to drive the wing to rotate for a certain angle, thereby achieving the purpose of folding the wing; when the aerocar needs to take off, the memory alloy wire on the other side is heated to rotate in the opposite direction of the folding mechanism, and under the combined action of gravity, the wing is unfolded and locked, so that the wing is unfolded. The folding mechanism has the advantages that the folding mechanism is simple in structure, a heavy and complex hydraulic system or motor is not needed to be added, the weight of the aerocar is greatly reduced, the problems of low load and short range of the aerocar due to the performance limitation of the conventional power battery can be solved, the aerocar is lighter, and the cruising ability of the aerocar is improved.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. A shape memory alloy based active folding mechanism for a wing of a flying vehicle, comprising:
a housing;
the two sliding grooves are symmetrically formed in two opposite side walls of the shell, and the sliding grooves are arranged along the axial direction of the shell;
the fixed shaft is arranged in the shell, and two ends of the fixed shaft respectively penetrate through the two sliding grooves and can translate along the sliding grooves;
wherein the axial direction of the fixed shaft is perpendicular to the axial direction of the shell;
a rotating shaft provided in the housing and spaced apart from the fixed shaft in parallel; the two ends of the rotating shaft respectively penetrate through the two side walls of the shell and are rotatably supported on the side walls;
one end of the wing is fixedly connected with the rotating shaft;
at least one set of wheel mechanisms disposed within the housing, comprising:
the fixed wheel is coaxially connected with the fixed shaft and synchronously moves with the fixed shaft;
the first rotating wheel is rotatably coaxially sleeved on the fixed shaft;
the second rotating wheel is rotatably coaxially sleeved on the fixed shaft, is connected with the first rotating wheel and synchronously rotates with the first rotating wheel;
a third wheel rotatably coaxially arranged on the rotating shaft and corresponding to the position of the fixed wheel;
the fourth rotating wheel is rotatably coaxially sleeved on the rotating shaft, is connected with the third rotating wheel and synchronously rotates with the third rotating wheel; the fourth wheel corresponds to the position of the first wheel;
a fifth wheel coaxially connected with the rotation shaft and corresponding to the position of the second wheel; the rotating shaft and the fifth rotating wheel synchronously rotate;
two first memory alloy wires, wherein two ends of each first memory alloy wire are fixedly connected with the outer edge of the fixed wheel and the outer edge of the third rotating wheel respectively, and the two first memory alloy wires are arranged close to the top and the bottom of the shell respectively;
two second memory alloy wires, wherein two ends of the second memory alloy wires are fixedly connected with the outer edge of the first rotating wheel and the outer edge of the fourth rotating wheel respectively, and the two second memory alloy wires are arranged close to the top and the bottom of the shell respectively;
two third memory alloy wires, wherein two ends of the third memory alloy wires are fixedly connected with the outer edge of the second rotating wheel and the outer edge of the fifth rotating wheel respectively, and the two third memory alloy wires are arranged close to the top and the bottom of the shell respectively;
each first memory alloy wire, each second memory alloy wire and each third memory alloy wire can be respectively electrified and heated, so that the memory alloy wires are shortened, different rotating wheels are driven to rotate, and the rotation of the rotating wheels is transmitted to the rotating shaft to realize the folding or unfolding of the wing.
2. The shape memory alloy based active folding mechanism for a wing of a flying vehicle of claim 1, further comprising:
the two sliding tables are fixedly connected to the outer sides of the two side plates of the shell respectively; two ends of the fixed shaft are respectively connected with the two sliding tables;
wherein, the slip table includes: a linear guide rail and a sliding block; the linear guide rail is arranged along the axial direction of the shell, and the end part of the fixed shaft is fixedly connected to the sliding block.
3. The active folding mechanism of aerocar wings based on shape memory alloy according to claim 2, wherein a sliding block locking mechanism is arranged on the sliding table, and the sliding block can be locked on the linear guide rail.
4. The shape memory alloy based active folding mechanism for a wing of a flying car according to claim 3, wherein the first, second and third memory alloy wires have diameters of 0.5mm to 1mm.
5. The shape memory alloy based active folding mechanism for a wing of a flying car according to claim 4, wherein the maximum elongation of the first, second and third memory alloy wires is 5% to 10%.
6. The active folding mechanism for aerofoils of a flying car based on shape memory alloy according to claim 4 or 5, wherein two connecting blocks are fixedly arranged on the outer circumferences of the fixed wheel, the first rotating wheel, the second rotating wheel, the third rotating wheel, the fourth rotating wheel and the fifth rotating wheel, and the two connecting blocks are oppositely arranged along the radial direction of the corresponding fixed wheel or rotating wheel;
wherein, the memory alloy wire is connected in the connecting block.
7. The shape memory alloy based active folding mechanism for a wing of a flying vehicle of claim 6, wherein each of the first, second and third memory alloy wires is comprised of a plurality of memory alloy wire monomers, respectively;
wherein, a plurality of memory alloy wire monomer parallel interval sets up.
8. The shape memory alloy-based active folding mechanism for a wing of an aerocar according to claim 7, wherein a fixed wheel disc is coaxially and fixedly connected to the fixed shaft, a plurality of first protruding parts are fixedly arranged on one side of the fixed wheel disc, the first protruding parts are arc-shaped, and the plurality of first protruding parts are arrayed along the circumference of the fixed wheel disc;
a plurality of second protruding parts are arranged on one side of the fixed wheel, the second protruding parts are arc-shaped, and the second protruding parts are arranged along the circumferential array of the fixed wheel;
the first protruding parts are meshed with the second protruding parts, so that the fixed wheel is connected with the fixed wheel disc.
9. The shape memory alloy based active folding mechanism of a wing of a aerocar according to claim 8, wherein the connection structure of the first wheel and the second wheel and the connection structure of the third wheel and the fourth wheel are identical to the connection structure of the fixed wheel and the fixed wheel disc.
10. The active folding mechanism of the aerocar wing based on the shape memory alloy according to claim 9, wherein two ends of each memory alloy wire are respectively connected with a wire, and the wires at two ends are respectively connected with the positive electrode and the negative electrode of a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310398126.8A CN116280173A (en) | 2023-04-14 | 2023-04-14 | Active folding mechanism of aerocar wing based on shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310398126.8A CN116280173A (en) | 2023-04-14 | 2023-04-14 | Active folding mechanism of aerocar wing based on shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116280173A true CN116280173A (en) | 2023-06-23 |
Family
ID=86801490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310398126.8A Pending CN116280173A (en) | 2023-04-14 | 2023-04-14 | Active folding mechanism of aerocar wing based on shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116280173A (en) |
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2023
- 2023-04-14 CN CN202310398126.8A patent/CN116280173A/en active Pending
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