CN111907274B - Ducted fan opening and closing device and application method thereof - Google Patents
Ducted fan opening and closing device and application method thereof Download PDFInfo
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- CN111907274B CN111907274B CN202010708849.XA CN202010708849A CN111907274B CN 111907274 B CN111907274 B CN 111907274B CN 202010708849 A CN202010708849 A CN 202010708849A CN 111907274 B CN111907274 B CN 111907274B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000000670 limiting effect Effects 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims description 121
- 230000002441 reversible effect Effects 0.000 claims description 11
- 230000003068 static effect Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 17
- 230000007246 mechanism Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000002829 reductive effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000033830 Hot Flashes Diseases 0.000 description 1
- 206010060800 Hot flush Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- 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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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a ducted fan opening and closing device and a using method thereof, and belongs to the field of mechanical transmission. The device comprises a ducted fan and a wing plate; the folding seat is rotatably connected with the other end of the wing plate; the arc-shaped bent rod is convexly formed at the end part of the other end of the wing plate; the shape of the arc-shaped channel is matched with that of the arc-shaped bent rod, the arc-shaped channel is arranged on the opening and closing seat, and the arc-shaped channel is connected with the arc-shaped bent rod in a matched manner; the end part of the arc-shaped bent rod is provided with a limiting block with a cross section larger than that of the arc-shaped bent rod, and the corresponding end part of the arc-shaped channel is provided with a limiting counter bore with a shape matched with that of the limiting block; when the ducted fan is folded, the limiting block is matched and abutted in the limiting counter bore. According to the invention, the arc-shaped bent rod is matched with the arc-shaped channel, so that the wing plate drives the ducted fan to rotate, a stable track exists, the ducted fan can be stopped in time after being folded in place, the situation of folding and over-positioning is avoided, the phenomenon that the ducted fan collides with a vehicle body is avoided, the safety is greatly improved, and the opening and closing device is simple in structure and easy to manufacture and use.
Description
Technical Field
The invention belongs to the field of mechanical transmission, and particularly relates to a ducted fan opening and closing device and a using method thereof.
Background
As a propulsion or lifting device, the ducted fan is widely applied to various vehicles, particularly aircraft, and in recent years, with the continuous development of science and technology, land-air amphibious conveyers such as aerocars, aerobikes and the like are lifted for research on hot flashes, and the ducted fan is often applied to the design of the conveyers due to the excellent thrust and lifting performance of the ducted fan.
The utility model provides a land-air amphibious type's conveyer, when the land operation, usually need not the assistance of duct fan, need pack up it in order to reduce resistance and occupation space this moment, and current this kind of conveyer is when the folding structure that opens and shuts of design duct fan, or in order to ensure the security that the duct fan opened and shut will open and shut the structure design too complicated, or only designed simple structure that opens and shuts, can't effectively guarantee that it is in place to stop when the duct fan opens and shuts, exists the security risk that the collision takes place with the automobile body.
Through searching, chinese patent publication number: CN 103395491B; publication date: 12 months 02 of 2015; the utility model discloses a but duct screw system and application this system's aerocar is provided with folding mechanism and locking mechanism in this application and is used for controlling the locking that opens and shuts of duct fan, although guaranteed that the duct fan can not take place to interfere in time to stop with the automobile body in the switching in-process, but be used for realizing the structure of opening and shutting function too complicated, break down easily, and the cost is too high.
In addition, chinese patent publication No.: CN 205523488U; publication date: 2016, 08 and 31; the utility model discloses a three duct vertical take-off and landing aerocar, the duct fan in this application is connected and realizes the function of opening and shutting through telescopic link and turnover rod and automobile body, and though the structure that is used for realizing the function of opening and shutting is comparatively succinct, but through the structure of opening and shutting of this application, can't guarantee the timely stop after the duct fan opens and shuts in place, has the security risk.
Disclosure of Invention
To solve at least one of the above problems, according to an aspect of the present invention, there is provided a ducted fan opening and closing device, the device including:
a ducted fan;
one end of the wing plate is fixedly connected to the outer side wall of the ducted fan;
further comprises:
the opening and closing seat is rotationally connected with the other end of the wing plate;
the arc-shaped bent rod is convexly formed at the end part of the other end of the wing plate, and the circle center of the arc-shaped bent rod is positioned on the rotation axis of the wing plate and the opening and closing seat;
the shape of the arc-shaped channel is matched with that of the arc-shaped bent rod, the arc-shaped channel is arranged on the opening and closing seat, and the arc-shaped channel is connected with the arc-shaped bent rod in a matched manner;
the end part of the arc-shaped bent rod is provided with a limiting block with a cross section larger than that of the arc-shaped bent rod, and the corresponding end part of the arc-shaped channel is provided with a limiting counter bore with a shape matched with that of the limiting block;
When the ducted fans are folded, the limiting block is matched and abutted in the limiting counter bore.
According to the ducted fan opening and closing device, optionally, the wing plate is hinged with the opening and closing seat.
According to the ducted fan opening and closing device of the embodiment of the present invention, optionally, a fan driving unit is disposed on a central axis of a duct of the ducted fan, and the fan driving unit includes:
a driving member for providing driving force for the operation of the ducted fan and capable of forward and reverse rotation;
the output shaft is in transmission connection with the output end of the driving piece;
the clutch transmission piece is arranged at the end part of the driving piece and is in transmission connection with the output shaft, and when the driving piece rotates forward/backward, the clutch transmission piece controls the output shaft to externally transmit/stop transmission.
According to the ducted fan opening and closing device provided by the embodiment of the invention, optionally, the two ends of the driving piece are respectively provided with an output end A and an output end B;
the two output shafts are respectively an output shaft A and an output shaft B, and are respectively connected with the two output ends in a transmission mode;
the clutch transmission pieces are two and are respectively in transmission connection with the corresponding output shafts through thread pairs;
under the action of forward rotation/reverse rotation of the driving piece, the output shaft moves along the axis direction of the output shaft relative to the corresponding clutch transmission piece, so that the output shaft is controlled to externally drive/stop driving.
According to the ducted fan opening and closing device provided by the embodiment of the invention, optionally, the clutch transmission part is a threaded ring, and the clutch transmission part is a ring with threads arranged on the inner wall;
the output shaft is an output shaft A, one end of the output shaft A is in transmission connection with the output end of the driving piece, and the other end of the output shaft A penetrates through the threaded ring and extends out;
the part of the output shaft A between the threaded ring and the driving piece is sequentially provided with a threaded section A, a straight section A and a limit ring, threads on the wall surface of the threaded section A are matched with threads on the threaded ring, the wall surface of the straight section A is straight, and the limit ring is formed on the wall surface of the output shaft A in a protruding mode.
According to the embodiment of the invention, the ducted fan opening and closing device optionally further comprises a reset piece A which is an elastic piece and is in a compressed state, one end of the reset piece A is abutted against the threaded ring, and the other end of the reset piece A is abutted against the limit ring.
According to the ducted fan opening and closing device of the embodiment of the present invention, optionally, the clutch transmission member includes:
the transmission cover is of a cover body structure, and one end part of the transmission cover is in transmission connection with the driving piece;
the planetary gear train comprises a gear ring, a planetary gear carrier, a planetary gear and a sun gear, wherein the gear ring is fixedly connected with the inner side wall of a transmission cover
The end cover is sleeved outside the transmission cover, the center of the end part of the end cover protrudes along the axial direction of the end cover to form a clutch sleeve, a threaded section B is formed on the outer wall of the top end of the clutch sleeve, a straight section B is arranged on the outer wall of the bottom end of the clutch sleeve, and the planetary carrier is sleeved on the clutch sleeve and is in threaded connection with the clutch sleeve;
The output shaft is an output shaft B which is coaxially and fixedly connected with the sun gear, penetrates through the planet carrier and the clutch sleeve and extends out of the end part of the end cover.
According to the embodiment of the invention, the ducted fan opening and closing device also comprises a locking piece which is sleeved on the output shaft B and is positioned between the planet carrier and the sun wheel, the locking piece and the output shaft B are relatively static, and a threaded hole C matched with the threaded section B is formed in the end face of the locking piece, which is close to the clutch sleeve.
According to another aspect of the present invention, there is provided a ducted fan opening and closing method, including the steps of:
A. unfolding
a1, the wing plate rotates relative to the opening and closing seat until the end surface of the wing plate contacts with the end surface of the opening and closing seat;
a2, blades of the ducted fan are in transmission connection with an output shaft B, a starting driving piece rotates positively, a transmission cover rotates to drive a gear ring to rotate, the gear ring drives a planet carrier to rotate until the planet carrier is meshed with a thread section B of a clutch sleeve, the planet carrier is locked after being meshed, at the moment, a planet gear train is powered by a sun gear, the output shaft B connected with the planet gear train rotates to drive the blades to rotate, and the ducted fan is started;
B. folding
b1, starting the driving piece to rotate reversely, and disengaging the planetary gear carrier from the clutch sleeve thread section B, wherein the planetary gear train outputs power by the planetary gear carrier, the sun gear is locked with the clutch sleeve by the locking piece, the output shaft B stops rotating, and the ducted fan stops rotating;
b2, the wing plate reversely rotates relative to the opening and closing seat until a limiting block at the end part of the arc-shaped bent rod is matched and abutted with a limiting counter bore of the arc-shaped channel;
b3, the driving piece continuously rotates reversely, an output shaft A is arranged at the output end A, the output shaft A stretches out after being meshed with the threaded ring, and the output shaft A drives outwards.
Advantageous effects
(1) According to the ducted fan opening and closing device, the arc-shaped bent rods at the end parts of the wing plates are matched with the arc-shaped channels on the opening and closing seat, so that stable tracks exist when the wing plates drive the ducted fan to rotate, and under the matching of the limiting holes at the corresponding positions of the limiting blocks at the end parts of the arc-shaped bent rods and the arc-shaped channels, the ducted fan can be stopped in time after being folded in place, the situation of folding in place is avoided, the phenomenon that the ducted fan collides with a vehicle body is avoided, the safety is greatly improved, and the opening and closing device is simple in structure and easy to manufacture and use;
(2) According to the ducted fan opening and closing device, the wing plates are hinged with the opening and closing seat, so that a stable rotating shaft is obtained, and the structure of the arc-shaped bent rod and the arc-shaped channel is matched, so that the rotating track of the wing plates is further stabilized, the safe and stable operation of the ducted fan structure in the opening and closing process is ensured, and the operation failure rate is reduced;
(3) According to the ducted fan opening and closing device, through the arrangement of the rotating shaft on the opening and closing seat and the cooperation of the driving structure on the conveyor, the positions of the wing plates and the ducted fan can be flexibly adjusted through the rotation of the rotating shaft when the wing plates are folded, and the direction of the wind gap of the ducted fan can be controlled through rotation when the wing plates are unfolded so as to adjust the flight state, so that the opening and closing device has more functions, and the application function range of the opening and closing device is further enlarged;
(4) According to the ducted fan opening and closing device, the driving piece of the fan driving unit can rotate positively and negatively, the clutch transmission piece is arranged to be matched with the output shaft, and the positive and negative rotation of the driving piece is controlled to enable the clutch transmission piece to control whether the output shaft drives outwards or not, so that the transmission requirements of different motion states of a conveyor are met;
(5) According to the ducted fan opening and closing device, through arranging the output of the two ends of the driving piece of the fan driving unit and matching with the corresponding output shaft and the clutch transmission piece, the driving piece rotates positively when the wing plates are unfolded, the ducted fan works by transmitting the blades, the driving piece rotates reversely when the wing plates are reasonable, the driving piece is separated from the transmission of the blades, the ducted fan stops working, and the driving piece still can transmit other required parts of the conveyor after the wing plates are folded through matching with the other output end by reversing, so that the driving piece is fully utilized in a limited space;
(6) According to the ducted fan opening and closing device, the threaded ring is arranged to be a clutch transmission part matched with the output shaft A to serve as a transmission end of the wing plate 2000 after being folded, the output shaft A and the threaded ring are matched to extend out of the shell after the wing plate is folded, the transmission mechanism is arranged at the corresponding part of the carrier, the output shaft A extends out of the shell and is in transmission connection with the transmission mechanism, so that the carrier is transmitted, the driving part is reversely operated when the wing plate is unfolded, the output shaft A and the threaded ring are matched to retract into the shell, and at the moment, the output shaft A does not externally transmit and the normal use of the ducted fan is not influenced;
(7) According to the ducted fan opening and closing device, the reset piece A is arranged to ensure that the output shaft A and the threaded ring always meet the stress condition of the meshed state, and the shell can be timely stretched out/retracted when the motor rotates, so that the effectiveness and timeliness of external transmission of the output end are ensured;
(8) The ducted fan opening and closing device is provided with the clutch transmission part formed by the planetary gear trains, so that the state of external transmission or not is flexibly and accurately switched when the driving part rotates forwards and reversely, the ducted fan opening and closing device also has the functions of external speed increasing transmission and speed reducing transmission, the requirements of various motion states of a conveyor are met, and the occupation of space is greatly saved;
(9) According to the ducted fan opening and closing device, due to the arrangement of the locking piece, when the ducted fan is not started, the sun gear in the planetary gear train is locked through the locking piece and the clutch sleeve, so that the output shaft B is prevented from being externally driven;
(10) The ducted fan opening and closing method disclosed by the invention has the advantages that the opening and closing process is simple, the opening and closing process is not in excessive operation under the structural limitation of the wing plate and the opening and closing seat, the collision with a carrier body is avoided, and the safety is high; and by controlling the steering of the driving piece, the ducted fan outputs thrust lift force after being unfolded, and outputs power to the conveyor instead of outputting thrust lift force after being folded.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting of the present invention.
FIG. 1 shows a schematic view of a ducted fan opening and closing device of the present invention;
FIG. 2 is a schematic view of another view of the ducted fan switching apparatus of the present invention;
FIG. 3 shows a detailed schematic view of the end structure of the wing panel of the present invention;
FIG. 4 shows a detailed schematic view of another view of the end structure of the wing panel of the present invention;
FIG. 5 shows a schematic structural view of the folding seat of the present invention;
FIG. 6 is a schematic view of another view of the folding seat of the present invention;
FIG. 7 is a schematic view showing a structure of a fan driving unit according to the present invention;
fig. 8 shows a schematic view of a fan drive unit of the present invention in partial cutaway;
FIG. 9 is a schematic diagram showing the characteristic part structure of the reset element A at the output end A of the invention;
FIG. 10 shows a schematic view of the threaded ring structure of the present invention;
FIG. 11 shows a schematic diagram of the structure of the invention at the output A;
fig. 12 is a schematic view of the disassembled state of the output shaft a of fig. 11;
FIG. 13 is a schematic view showing the driver and end cap disassembled;
FIG. 14 shows an exploded view of one clutch transmission configuration of the present invention;
FIG. 15 shows a schematic diagram of the planetary gear train of the present invention;
FIG. 16 is an exploded view of the planetary gear train of FIG. 15;
FIG. 17 shows a schematic view of the planet carrier structure of the present invention;
FIG. 18 shows a schematic view of the structure of the locking member of the present invention;
FIG. 19 shows a schematic view of a view of an end cap of the present invention;
FIG. 20 shows another schematic view of the end cap of the present invention;
FIG. 21 is a schematic view of the ducted fan opening and closing device of the present invention after application in a carrier;
FIG. 22 is a schematic view showing a closed state of the ducted fan opening and closing device of the present invention after being applied to a conveyor;
FIG. 23 is a schematic view showing the open-close device of the ducted fan of the present invention after it is applied to a conveyor;
FIG. 24 is a schematic view showing the opening and closing device of the ducted fan in a state of the ducted fan opening facing the ground after being applied to a carrier;
FIG. 25 is a schematic view showing the relationship between ducted fans, wings and reduction gearbox when the transporter is in a land-based condition;
fig. 26 is an enlarged view at a in fig. 25.
Reference numerals:
1000. a ducted fan; 1010. a fan driving unit; 1011. a housing; 1020. a blade;
2000. a wing plate; 2010. an arc-shaped bent rod; 2011. a limiting block; 2020. a hinge seat A;
3000. an opening and closing seat; 3010. an arcuate channel; 3011. limiting counter bores; 3020. a hinge seat B; 3030. a rotating shaft;
4000. a pin shaft;
5000. a vehicle body; 5001. a wheel;
6000. a reduction gearbox; 6010. a reduction gearbox transmission shaft;
1. a driving unit; 10. an output terminal A; 11. an output terminal B;
2. an output shaft A; 20. a thread section A; 21. a straight section A; 22. a limit ring; 23. a connector; 230. a connection hole;
3. a threaded ring; 30. a threaded hole A; 300. a thread A;
4. a resetting piece A;
5. a transmission cover;
6. a planetary gear train; 60. a gear ring; 61. a planet carrier; 610. a threaded hole B; 620. a first planet wheel; 621. a planet wheel II; 63. a sun gear;
7. an end cap; 70. a clutch sleeve; 700. a thread section B; 701. a straight section;
8. an output shaft B;
9. a resetting piece B; 90. a locking member; 900. a threaded hole C; 901. a keyway.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "a," "B," "C," "one end," "the other end," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another; "forward rotation" and "reverse rotation" do not denote a particular direction of rotation, but are merely used to distinguish between different directions of rotation; likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
Example 1
The ducted fan opening and closing device of the embodiment includes:
a ducted fan 1000;
a wing plate 2000, one end of which is fixedly connected to the outer side wall of the ducted fan 1000;
further comprises:
the opening and closing seat 3000 is rotatably connected with the other end of the wing plate 2000;
the arc-shaped bent rod 2010 is formed at the end part of the other end of the wing plate 2000 in a protruding way, and the circle center of the arc-shaped bent rod 2010 is positioned on the rotation axis of the wing plate 2000 and the opening and closing seat 3000;
the shape of the arc-shaped channel 3010 is matched with that of the arc-shaped bent rod 2010 and is arranged on the opening and closing seat 3000, and the arc-shaped channel 3010 is connected with the arc-shaped bent rod 2010 in a matching way;
The end part of the arc-shaped bent rod 2010 is provided with a limiting block 2011 with a sectional area larger than that of the arc-shaped bent rod 2010, and the corresponding end part of the arc-shaped channel 3010 is provided with a limiting counter bore 3011 with a shape matched with that of the limiting block 2011;
when the ducted fan 1000 is folded, the limiting block 2011 is matched and abutted in the limiting counter bore 3011.
The present application provides a ducted fan opening and closing device based on the problem that the opening and closing structure of the ducted fan in the prior art is too complex or cannot ensure the safety.
As shown in fig. 1 and 2, the ducted fan 1000 and the wing plate 2000 disposed on the outer side wall of the ducted fan 1000 are both designed in the prior art, and the difference of the present application is that an opening and closing seat 3000 is further disposed on the vehicle body, the opening and closing seat 3000 is in a block structure, and the end of the wing plate 2000 is rotatably connected with one end of the opening and closing seat 3000, that is, when the opening and closing seat 3000 is fixed, the wing plate 2000 can rotate around the opening and closing seat 3000 by driving an external driving member (not shown in the figure), so as to drive the ducted fan 1000 to rotate, thereby achieving the purpose of opening and closing the ducted fan 1000; the further improvement point of the embodiment is that an arc-shaped bent rod 2010 is convexly arranged on the end face of the wing plate 2000 close to the opening and closing seat 3000, as shown in fig. 3 and 4, the arc-shaped bent rod 2010 is arranged by taking the rotation axis position of the wing plate 2000 relative to the opening and closing seat 3000 as the circle center, meanwhile, an arc-shaped channel 3010 with the shape matched with that of the arc-shaped bent rod 2010 is arranged at the corresponding position of the opening and closing seat 3000, as shown in fig. 5 and 6, the arc-shaped bent rod 2010 is connected with the arc-shaped channel 3010 in a matched manner, and under the limit of the matching of the arc-shaped bent rod 2010 on the wing plate 2000 and the arc-shaped channel 3010 on the opening and closing seat 3010, the wing plate 2000 can have a more stable rotation track when driven by an external driving piece, so that the use safety is improved; further, the arc-shaped bent rod 2010 is formed at the end of the wing plate 2000, one end of the arc-shaped bent rod 2010 is connected to the wing plate 2000, the other end is the tail end, a limiting block 2011 is arranged at the tail end of the arc-shaped bent rod, the cross-sectional area of the limiting block 2011 is larger than that of the arc-shaped bent rod 2010, the shape of the limiting block 2011 is not limited, and the limiting block can be in a step shape, a cylinder shape, a prism shape and the like; when the wing plate 2000 is unfolded, the end of the wing plate 2000 is rotatably connected with the opening and closing seat 3000, and after the wing plate 2000 is unfolded in place, the end of the wing plate abuts against the end of the opening and closing seat 3000, so that the ducted fan 1000 can be positioned in the unfolded state.
Example 2
The ducted fan opening and closing device of the present embodiment is further improved on the basis of embodiment 1, and the wing plate 2000 is hinged to the opening and closing seat 3000.
The wing plate 2000 and the opening and closing seat 3000 are rotatably connected through a hinge structure, and specifically comprises a hinge seat A2020 positioned at the end part of the wing plate 2000 and shown in fig. 3 and 4, a hinge seat B3020 positioned at the end part of the opening and closing seat 3000 and shown in fig. 5 and 6, and a pin shaft 4000 shown in fig. 1 and 2, wherein after the hinge seat A2020 and the hinge seat B3020 are matched, the hinge is completed through the pin shaft 4000, and under the hinge structure, the wing plate 2000 and the opening and closing seat 3000 have stable rotation shafts, and the rotation track is further limited by the arc-shaped bent rod 2010 and the arc-shaped channel 3010 in a matched manner, so that the safe and stable operation of the structure of the ducted fan 1000 in the opening and closing process can be ensured, and the operation failure rate is reduced.
Further, in this embodiment, the arc-shaped bent rods 2010 are provided with a plurality of arc-shaped bent rods, the arc-shaped bent rods are arranged side by side along the axis direction of the rotating shaft, corresponding arc-shaped channels 3010 are also provided with corresponding limiting blocks 2011 and limiting counter bores 3011, and the stability of the rotation track of the wing plate 2010 can be further enhanced by the arrangement of the plurality of arc-shaped bent rods 2010 and corresponding structures, so that the timely stopping function after the wing plate 2010 is folded in place is further ensured.
Example 3
The ducted fan opening and closing device of this embodiment is further improved on the basis of embodiment 2, and a rotating shaft 3030 is convexly arranged at the end of the opening and closing seat 3000.
As shown in fig. 1, 2, 5 and 6, one end of the opening and closing seat 3000 is rotatably connected with the wing plate 2000, and a rotating shaft 3030 is arranged at the other end of the opening and closing seat 3000, because the opening and closing seat 3000 is mounted on the vehicle body, a rotating driving member is arranged at a position corresponding to the rotating shaft 3030 and is in transmission connection with the rotating shaft 3030, the opening and closing seat 3000 can be further rotated by driving the rotating shaft 3030 to further drive the wing plate 2000 to rotate, when the wing plate 2000 is folded, the positions of the wing plate 2000 and the ducted fan 1000 can be adjusted by rotation, and when the wing plate 2000 is unfolded, the direction of the wind gap of the ducted fan 1000 on the wing plate 2000 can be adjusted by rotation so as to adjust the flying state; through the setting of axis of rotation 3030, cooperation conveyer is last drive structure, can make the switching device of this embodiment have more function realization, and then has increased the applicable functional range of switching device.
Example 4
The ducted fan opening and closing device of the present embodiment is further improved on the basis of embodiments 1 to 3, a fan driving unit 1010 is disposed on a central axis of a duct of the ducted fan 1000, and the fan driving unit 1010 includes:
A driving element 1 for providing driving force for the operation of the ducted fan 1000 and capable of forward and reverse rotation;
the output shaft is in transmission connection with the output end of the driving piece 1;
the clutch transmission piece is arranged at the end part of the driving piece 1 and is in transmission connection with the output shaft, and when the driving piece 1 rotates forwards/reversely, the clutch transmission piece controls the output shaft to externally transmit/stop transmission.
The fan driving unit 1010 of the ducted fan 1000 is fixed on the ducted fan 1000 through a fixing sleeve on the central axis of the duct, when the wing plate 2000 is folded, the ducted fan 1000 is in a non-use state at this time, the fan driving unit 1010 needs to stop driving the blades 1020 of the ducted fan 1000, when the wing plate 2000 is unfolded, the ducted fan 1000 needs to provide thrust lift force to the outside, at this time, the fan driving unit 1010 needs to be driven to the outside, when the transporter is used at ordinary times, the fan driving unit 1010 needs to be controlled to drive the outside or not according to the specific movement state requirement, and for this requirement, the clutch driving part is arranged to control whether the output shaft is driven to the outside according to the forward rotation and the reverse rotation of the driving part 1 in the fan driving unit 1010 so as to meet the requirements of different movement states of the transporter.
Example 5
The ducted fan opening and closing device of the embodiment is further improved on the basis of embodiment 4, and two ends of the driving piece 1 are respectively provided with an output end A10 and an output end B11;
The two output shafts are respectively an output shaft A2 and an output shaft B8, and are respectively connected with the two output ends in a transmission mode;
the clutch transmission pieces are two and are respectively in transmission connection with the corresponding output shafts through thread pairs;
under the action of forward rotation/reverse rotation of the driving piece, the output shaft moves along the axis direction of the output shaft relative to the corresponding clutch transmission piece, so that the output shaft is controlled to externally drive/stop driving.
The ducted fan 1000 is provided with the driving member 1 to rotate in order to drive the blades 1020, but when the ducted fan 1000 is not in use, that is, when the wing plate 2000 is folded, if the driving of the driving member 1 is stopped to be idle, or the driving member is used to idle the ducted fan 1000, the ducted fan is not externally driven, which is a waste of energy, and is also a waste of limited installation space in a vehicle body, therefore, the driving member 1 in the embodiment is provided with two output ends, and is matched with the two output shafts and the clutch driving member, as shown in fig. 7 and 8, when the driving member 1 is positively rotated, one of the output shafts is matched with the clutch driving member to externally drive, in the embodiment, when the wing plate 2000 is unfolded, that is, the driving member 1 is positively rotated, and when the wing plate 2000 is folded, the blade 1020 is driven by the cooperation of one clutch driving member, the output shaft which is originally driven by the corresponding clutch driving member is stopped to externally drive the blade 1020, and the ducted fan 1000 is stopped by the corresponding clutch driving member is controlled by the corresponding clutch driving member, and the other output end is correspondingly controlled by the clutch driving member to be effectively connected with the ducted fan 1000, thereby the ducted fan 1000 can be fully transported, and the ducted fan can be driven by the corresponding device.
Example 6
The embodiment shows a structural mode of the clutch transmission and the output shaft, wherein the clutch transmission part is a threaded ring 3, and is a ring with threads arranged on the inner wall;
the output shaft is an output shaft A2, one end of the output shaft is in transmission connection with the output end of the driving piece 1, and the other end of the output shaft penetrates through the threaded ring 3 and extends out;
the part of the output shaft A2 between the threaded ring 3 and the driving piece 1 is sequentially provided with a threaded section A20, a straight section A21 and a limit ring 22, threads on the wall surface of the threaded section A20 are matched with threads on the threaded ring 3, the wall surface of the straight section A21 is straight, and the limit ring 22 is formed on the wall surface of the output shaft A2 in a protruding mode.
In this embodiment, the driving member 1, i.e. the motor, is placed in the housing 1011 as shown in fig. 7 and 8 to protect each component of the fan driving unit 1010 and fix the position of each component, and fig. 10 shows a detailed structure of the threaded ring 3, in which the threaded hole a30 is formed in the middle of the threaded ring 3, the threaded hole a300 is formed on the hole wall, and the threaded ring 3 is fixed on the housing 1011 by fixing legs extending in four directions.
For the clutch transmission member of this embodiment, the output shaft is of an output shaft A2 structure, which can be reflected in detail in fig. 11 and 12, the output shaft A2 is in transmission connection with the output end a10 of the motor, in this embodiment, the connection end of the output shaft A2 is in spline shape, and a matched spline groove shape is arranged at the output end of the motor to ensure transmission effect and prevent relative rotation between the two, the output shaft A2 and the output end are movably connected, and the output shaft A2 can be displaced along the direction of the spline groove under the limitation of the spline groove; the output shaft A2 of this embodiment passes through the threaded ring 3, as shown in fig. 8, a threaded section a20, a flat section a21 and a stop collar 22 are sequentially disposed at a portion of the output shaft A2 between the threaded ring 3 and the output end, when the motor rotates to drive the output shaft A2 to rotate, the threaded section a20 meets the engagement condition with the threaded ring 3 in the rotation process, in the process of meshing screwing, as the threaded ring 3 is fixed, the output shaft A2 generates axial displacement, further extends out of the threaded ring 3, from the view angle of fig. 7, the output shaft A2 extends out of the housing 1011, when the output shaft A2 displaces one end, the flat section a21 enters the threaded ring 3, the output shaft A2 is disengaged from the threaded ring 3, at this time, no axial displacement is performed any more, only the motor is driven to rotate, and accordingly, a corresponding transmission mechanism is arranged outside the housing 1011, after the output shaft A2 extends out of the housing 1011, and is in transmission connection with the transmission mechanism, when the external transmission needs to be stopped, the motor is reversely operated, the motor is reversely meshed with the threaded section a20 and the threaded ring 3, and the reverse axial displacement of the output shaft A2 is reversely meshed with the threaded ring 3, and the reverse displacement of the housing 1011 is axially retracted from the external transmission, from the view angle of the housing 1011 is stopped, as seen from the external transmission.
In this embodiment, when the motor rotates reversely after the wing plate 2000 is folded, the output shaft A2 and the threaded ring 3 cooperate to extend out of the housing 1011, and a transmission mechanism is arranged at a corresponding position of the transporter, and the output shaft A2 extends out of the housing 1011 and is in transmission connection with the transmission mechanism, so that the transporter is transmitted.
Example 7
The ducted fan opening and closing device of the present embodiment is further improved on the basis of embodiment 6, and further includes a reset member A4, which is an elastic member, in a compressed state, with one end abutting on the threaded ring 3 and the other end abutting on the limit ring 22.
When the motor rotates to control the output shaft A2 to retract, there may be a situation that the thread section a20 fails to be meshed with the thread ring 3 in time, and this situation may cause adverse effects on external transmission, so as to avoid this phenomenon, this embodiment is further improved, as shown in fig. 9, a reset member A4 is provided, which is an elastic member, in a compressed state, one end abuts on the thread ring 3, the other end abuts on the stop collar 22, the reset member A4 may be a member with elasticity such as a spring, an elastic gasket, etc., in this embodiment, the reset member A4 adopts a large-pitch spring, the spring is sleeved on the output shaft A2, one end abuts on the other end of the thread ring 3, abuts on the stop collar 22, and is in a compressed state, when the motor rotates to extend the output shaft A2, the reset member A4 is further compressed, when the motor rotates reversely, under the elastic deformation acting force of the reset member A4, the thread space between the output shaft A2 and the thread ring 3 always satisfies the stress condition of the meshed state, when the output shaft A2 rotates smoothly to be meshed with the thread ring 3, and the output shaft A2 can be immediately and the output shaft a is guaranteed to retract in time when the output shaft A2 is reversely meshed.
Example 8
This embodiment shows another structural mode of the clutch transmission and the output shaft of the present invention, and the clutch transmission member includes:
the transmission cover 5 is in a cover body structure, and one end part of the transmission cover is in transmission connection with the driving piece 1;
the planetary gear train 6 comprises a gear ring 60, a planetary gear carrier 61, a planetary gear and a sun gear 63, wherein the gear ring 60 is fixedly connected with the inner side wall of the transmission cover 5
The end cover 7 is sleeved outside the transmission cover 5, the center of the end part of the end cover 7 protrudes along the axial direction of the end cover 7 to form a clutch sleeve 70, a threaded section B700 is formed on the outer wall of the top end of the clutch sleeve 70, a straight section B701 is formed on the outer wall of the bottom end of the clutch sleeve, and the planet carrier 61 is sleeved on the clutch sleeve 70 and is in threaded connection with the clutch sleeve;
the output shaft is an output shaft B8, which is fixedly connected coaxially with the sun gear 63 and passes through the planetary carrier 61 and the clutch sleeve 70, and extends out from the end of the end cover 7.
As shown in fig. 13 and 14, one end of the transmission cover 5 faces the direction of the output end of the driving piece 1, namely, the motor, and is in transmission connection with the output end of the motor, as the motor is started, the transmission cover 5 rotates, the planetary gear train 6 is accommodated in the inner wall of the transmission cover 5, the planetary gear train 6 is structured as shown in fig. 15 and 16, wherein the gear ring 60 of the planetary gear train 6 is fixedly connected with the transmission cover 5, the gear ring 60 rotates as the transmission cover 5 rotates, and the gear ring 60 is the power input in the planetary gear train 6; the end cover 7 is covered on the outer side of the transmission cover 5 and is coaxially arranged with the transmission cover 5, the shape of the end cover is the same as that of a cover with one opened end and one not opened end, as shown in fig. 19 and 20, a section of straight section B701 and a section of thread section B700 are arranged on the clutch sleeve 70 arranged at the center of the end part of the end cover 7, the planetary carrier 61 is sleeved on the clutch sleeve 70, a threaded hole B610 is also arranged on the planetary carrier 61, and the specific structure of the planetary carrier 61 is shown in fig. 17.
In this embodiment, the transmission cover 5 is in transmission connection with the output end B11 of the driving member 1, when the motor rotates forward, the transmission cover 5 rotates along with the transmission cover to drive the gear ring 60 to rotate, the power is input into the planetary gear train 6 by the gear ring 60, the planetary carrier 61 rotates under the drive of the gear ring 60, the threaded section B700 of the clutch sleeve 70 enters a meshing state in the rotation process, the planetary carrier 61 is meshed to the top end of the clutch sleeve 70 and then limited by the top end of the clutch sleeve 70 (the top end can be limited by forming a ring member with a large diameter to prevent the planetary carrier 61 from being meshed and then separating from the clutch sleeve 70), at this moment, the planetary carrier 61 is locked according to the transmission characteristics of the planetary gear train, the power is transmitted from the gear ring 60 and then output by the sun gear 63, so that the output shaft B8 fixedly connected with the sun gear 63 drives the outside, the blades 1020 of the ducted fan 1000 are in transmission connection with the output shaft B8, therefore, when the motor rotates forward, the blades 1020 of the ducted fan 1000 rotate, and the ducted fan 1000 outputs thrust lift; on the contrary, when the motor rotates reversely, the transmission cover 5 rotates reversely to drive the gear ring 60 to rotate reversely, power is input from the gear ring 60, the planetary carrier 61 rotates reversely under the drive of the gear ring 60, the planetary carrier 61 is disengaged from the threaded section B700 of the clutch sleeve 70 and does not enter the engaged state any more, the planetary carrier 61 is in the straight section B701 to idle, the power is transmitted from the gear ring 60 and is output from the planetary carrier 61 according to the transmission characteristics of the planetary gear train 6, and the sun gear 63 does not drive externally, so that the blades 1020 of the ducted fan 1000 cannot be started when the motor rotates reversely.
In this embodiment, after the wing plate 2000 is unfolded, the motor rotates forward, the ducted fan 1000 starts, and outputs thrust and lift force, at this time, the output shaft A2 is retracted into the housing 1011, so that no external transmission is performed, the operation of the ducted fan 1000 is not affected, after the wing plate 2000 is folded, the motor rotates reversely, at this time, the blades 1020 of the ducted fan 1000 are not transmitted, the ducted fan 1000 stops operating, and the output shaft A2 extends out of the housing 1011 and is transmitted and connected with a transmission mechanism arranged on the transporter.
Further, as shown in fig. 16, the planetary gear train 6 of the present embodiment includes a gear ring 60, a planetary gear carrier 61, a planetary gear one 620, a planetary gear two 621 and a sun gear 63, where the gear ring 60 is meshed with the planetary gear one 620, the planetary gear one 620 and the planetary gear two 621 are coaxially driven and have the same angular velocity, the planetary gear one 620 and the planetary gear two 621 are fixed on the planetary gear carrier 61, the sun gear 63 is meshed with the planetary gear two 621, in a specific use, the gear ratio can be adjusted by setting the number of teeth of each gear, and finally the rotational speed output of the sun gear 63 is adjusted, so that the device can control whether to externally drive or not, and has the acceleration/deceleration function of an acceleration/deceleration box, and has a wider application range.
Example 9
The ducted fan opening and closing device of the present embodiment is further improved on the basis of embodiment 8, and further includes a locking member 90, which is sleeved on the output shaft B8 and is located between the planet carrier 61 and the sun gear 63, wherein the locking member 90 is relatively static to the output shaft B8, and a threaded hole C900 matched with the threaded section B700 is formed on the end surface of the locking member 90, which is close to the clutch sleeve 70.
When the motor rotates reversely, in order to ensure that the sun gear 63 can be locked to ensure that the output shaft B8 does not externally drive, the locking piece 90 is sleeved on the output shaft B8 and positioned between the planet wheel carrier 61 and the sun gear 63, the locking piece 90 and the output shaft B8 are relatively static, a threaded hole C900 matched with a threaded section B700 is formed in the end face, close to the clutch sleeve 70, of the locking piece 90, as shown in fig. 16, of the locking piece 90, the locking piece 90 is structured as shown in fig. 18, the locking piece 90 and the output shaft B8 can be kept relatively static through the fact that a key groove 901 is formed in the locking piece 90 in a matched key connection, when the motor rotates reversely, the planet wheel carrier 61 rotates under the driving of the gear ring 60 to drive the planet wheels to rotate, the sun gear 63 is driven to rotate, the locking piece 90 is meshed with the threaded section B700 of the clutch sleeve 70, at the moment, the sun gear 63 is kept in a static state, and power is input from the gear ring gear 60 and output from the planet wheel space 61.
Further, in order to ensure that the planet carrier 61 can be meshed with the thread section B700 in time during forward rotation of the motor, the reset member B9 is an elastic member, and is in a compressed state, one end of the reset member B9 is abutted against the end part of the end cover 7, the other end of the reset member B9 is abutted against the planet carrier 61, and the reset member B9 is an elastic washer and sleeved on the output shaft B8, as shown in fig. 15 and 16, when the planet carrier 61 is positioned on the flat section B701, the reset member B9 is compressed, and when the motor rotates reversely, the meshing condition of the planet carrier 61 and the clutch sleeve 70 is met, the reset member B9 can be meshed with the thread section B700 in time.
Example 10
The bypass fan opening and closing method of the embodiment comprises the following steps:
A. unfolding
a1, the wing plate 2000 rotates relative to the opening and closing seat 3000 until the end surface of the wing plate 2000 contacts with the end surface of the opening and closing seat 3000;
a2, blades 1020 of the ducted fan 1000 are in transmission connection with an output shaft B8, a starting driving piece 1 rotates positively, a transmission cover 5 rotates to drive a gear ring 60 to rotate, the gear ring 60 drives a planet carrier 61 to rotate until the planet carrier 61 is meshed with a thread section B700 of a clutch sleeve 70, the planet carrier 61 is locked after being meshed, at the moment, a planet gear train 6 outputs power by a sun gear 63, the output shaft B8 connected with the planet gear train rotates to drive the blades 1020 to rotate, and the ducted fan 1000 is started;
B. Folding
b1, starting the driving piece 1 to rotate reversely, disengaging the planetary wheel carrier 61 from the threaded section B700 of the clutch sleeve 70, outputting power by the planetary wheel carrier 61 at the moment, locking the sun wheel 63 by the locking piece 90 and the clutch sleeve 70, stopping the output shaft B8, and stopping the ducted fan 1000;
b2, the wing plate 2000 reversely rotates relative to the opening and closing seat 3000 until a limiting block 2011 at the end part of the arc-shaped bent rod 2010 is matched and abutted with a limiting counter bore 3011 of the arc-shaped channel 3010;
b3, the driving piece 1 continuously rotates reversely, an output shaft A2 is arranged at the output end A10, the output shaft A2 stretches out after being meshed with the threaded ring 3, and the output shaft A2 externally drives.
When the ducted fan 1000 is unfolded, the driving piece 1 is started to rotate forward after the front driving wing plate 2000 is unfolded in place, the sun wheel 63 drives the outside under the cooperation of the clutch sleeve 70 on the planetary gear system 6 and the end cover 7, the blades 1020 fixedly connected with the output shaft B8 further drive the outside, the ducted fan 1000 is started to output thrust and lift, and at the moment, the output shaft A2 retracts the shell 1011 under the action of the threaded ring 3 and does not drive the outside; when the ducted fan 1000 is folded, the driving piece 1 is reversed, the sun gear 63 in the planetary gear train 6 is locked, external transmission is not performed, the blades 1020 of the ducted fan 1000 stop rotating, after the wing plates 2000 are folded in place, the driving piece 1 continues to be reversed, and the output shaft A2 extends out of the shell 1011 and is transmitted after being in transmission connection with the corresponding transmission mechanism on the conveyor.
The ducted fan opening and closing method of the embodiment has simple opening and closing process, the opening and closing process is not in excessive running under the structural limitation of the wing plate 2000 and the opening and closing seat 3000, the collision with the carrier body is avoided, and the safety is high; by controlling the steering of the driving element 1, the ducted fan 1000 outputs thrust lift force after being unfolded, and outputs power to the transporter without outputting thrust lift force after being folded.
Example 11
The ducted fan opening and closing device of the present embodiment is applied to an air-ground amphibious transporter, wherein an opening and closing seat 3000 is rotatably connected with a transporter body 5000 of the transporter through a rotating shaft 3030, the transporter body 5000 is shaped like a motorcycle, and ducted fan opening and closing devices are arranged on two sides of the transporter body 5000, as shown in fig. 21 and 22.
When the conveyor is in the land state, the ducted fan 1000 is closed as shown in fig. 21 and 22; when the carrier is in flight, the ducted fan 1000 is deployed as shown in fig. 23 and 24.
Example 12
The ducted fan opening and closing device of the present embodiment is further improved on the basis of embodiment 11, and a reduction gearbox 6000 is disposed on the conveyor, and is disposed in the vehicle body 5000 and in transmission connection with the wheels 5001 of the vehicle body 5000. The reduction gearbox 6000 is provided with a reduction gearbox transmission shaft 6010 for transmitting power to the reduction gearbox 6000;
The output shaft A10 of the ducted fan 1000 is connected with the transmission shaft 6010 of the reduction gearbox in a transmission way after being folded.
As shown in fig. 23 and 24, the reduction gearbox 6000 is disposed at the lower part of the vehicle body 5000, and the structure of the transmission connection between the output shaft a10 and the reduction gearbox transmission shaft 6010 after the ducted fan 1000 is folded is as shown in fig. 25 and 26.
In this embodiment, the driving component for the rotation of the wheel 5001 during the land state of the transporter is omitted, the weight of the vehicle body 5000 is reduced, the installation space is saved, during the land state, the ducted fan 1000 is folded and retracted, at this time, the output end a10 of the driving element 1 in the ducted fan 1000 is very close to the vehicle body 5000, a reduction gearbox 6000 is arranged at the corresponding position, and since the ducted fan 1000 needs high power for outputting the lift thrust, the driving element 1 directly drives the wheel 5001 of the transporter, the driving speed is too fast, the reduction gearbox 6000 is arranged, the output shaft A2 drives the reduction gearbox 6000, and drives the wheel 5001 after passing through the reduction gearbox 6000, so that the speed requirement during the land state is more easily met.
The structure of the reduction gearbox 6000 and the structure of the transmission connection between the reduction gearbox 6000 and the wheels 5001 are already common in the prior art, and will not be described in detail here.
In this embodiment, an output end a10 of the driving member 1 is connected to an output shaft A2, and is in transmission connection with a reduction gearbox 6000 after the ducted fan 1000 is folded, so as to transmit to the wheels 5001, an output end B11 is connected to an output shaft B8 through a planetary gear train 6, and the blades 1020 are controlled to output thrust lift after the ducted fan 1000 is unfolded.
Example 13
The specific parameters of the ducted fan opening and closing device of the embodiment after being applied to a conveyor are as follows:
the car body 5000 is of a motorcycle type, the mass is 180kg, the weight after the maximum load is 280kg, the center of mass of the car body is 0.7m away from a front axle and is positioned at a position of 0.618 between the two wheel bases, two ducted fans 1000 are respectively arranged on two sides of the car body 5000, the total width of a transporter is 1.7m in a flying state, and the center distance between the two ducted fans 1000 is 1.0m.
In this embodiment, the duct cone angle β=9° of the duct fan 1000 and the duct outlet diameter d=700 mm, and since the ratio of the duct outlet diameter D to the duct inner diameter D has a relatively obvious effect on the duct lift force, the applicant's experimental study shows that the ratio is the most effective result of D/d=1.2, and therefore, the duct inner diameter d=583 mm, and the applicant's study shows that the lift force provided by the duct itself is the largest when the duct aspect ratio (the ratio of the duct inner diameter D to the duct height c) is 1.5, i.e., D/c=1.5, and therefore, the duct height c= 388.9mm; the radius r of the duct lip, namely the radius of the front edge of the section of the duct shell, is an important structural parameter affecting the characteristics of the flow field of the duct inlet, and according to the research of the applicant, as the radius r of the duct lip is increased from 2.5% to 7.5% of the duct height, the lift force generated by the duct is slowly increased. The increase of the radius r of the duct lip can improve the flowing condition of bypass flow of the duct inlet, so that the reverse pressure gradient at the inner side of the duct inlet is reduced, the possibility of airflow separation and stall is reduced, and the lift force generated by the duct is correspondingly increased, thereby taking r=7.5% ×c=7.5% × 388.9 =29.16 mm; increasing the wall thickness b of the duct can increase the effective lift area, and the duct lift can be increased, but at the same time, the structural weight can be increased, and the embodiment takes b=28.8% ×c=0.288× 388.9 =112 mm, so that the optimal duct lift can be obtained in a reasonable weight range; further, the applicant has found that the lift force of the duct is maximum when the disk of the installed blade 1020 is located at about 1/3 of the inlet of the duct, in this embodiment, the disk is located at 1/3 of the inlet of the duct, and the clearance between the disk and the inner wall of the duct is 1mm, and the lift effect of the duct is reduced when the clearance is greater than 1 mm.
Determination of the output power of the driving element 1 of the present embodiment:
in this embodiment, the diameter d=580 mm of the rotor disk, the length h=c= 388.9mm of the duct, and the diameter D of the hub 0 ＝180mm；
According to the theorem of momentum,
total thrust of system
Ducted fan thrust
Ducted fan power
Wherein A is the area of the paddle disc; v (V) 0 Is the axial incoming flow speed; deltaV 2 Delta V for slip zone velocity delta 2 ＝V 2 -V 0 ；V 2 The gas flow speed is the slip flow area; ρ is the air density; q is a ducted thrust factor.
The ducted fan system being used as a lifting member for vertical take-off and landing, the axial incoming flow speed of which can be regarded as zero, i.e. V 0 ＝0，ΔV 2 ＝V 2 . The following ducted fan system overall model is possible from the above:
total thrust of system
Ducted fan thrust
Ducted fan power
Thrust area ratio
Power thrust ratio
Due to the diameter D of the propeller disk and the diameter D of the propeller hub 0 As is known, the pitch disc area a=0.239 m 2 ，
Taking a bypass thrust factor q as 0.478;
a load of at least 280Kg, i.e. a load of about 2744N, is required, considering that the flying motorcycle is equipped with a pair of ducted fan systems, i.e. the single fan system generates a lift of not less than 1372N;
in the above, since the vertical take-off is generally not high, the air density ρ=1.225 kg/m at standard atmospheric pressure is taken 3 ；
In conclusion, the motor used by the bypass fan can be a high-power brushless direct current motor, and the maximum output power is at least 54KW;
Further, the driving member of the embodiment adopts a brushless DC motor, and the technology of outputting such high power is still immature, so the application adopts the planetary gear train 6 structure to increase the speed, wherein the tooth number Z of the gear ring 60 1 =54, planetary gear one 620 teeth number Z 2 =17; planet wheel two 621 tooth number Z 2’ =30; sun gear 63 tooth number Z H =19; from this, the step-up ratio at the output of the sun gear is obtainedTherefore, the existing brushless motor technology can completely meet the output power requirement of the carrier for low-altitude flight under the condition that the planetary gear train 6 of the embodiment rises.
The examples of the present application are merely for describing the preferred embodiments of the present application, and are not intended to limit the spirit and scope of the present application, and those skilled in the art should make various changes and modifications to the technical solution of the present application without departing from the spirit of the present application.
Claims (7)
1. A ducted fan opening and closing device comprises,
a ducted fan;
one end of the wing plate is fixedly connected to the outer side wall of the ducted fan;
characterized by further comprising:
the opening and closing seat is rotationally connected with the other end of the wing plate;
the arc-shaped bent rod is formed at the end part of the other end of the wing plate in a protruding mode, and the circle center of the arc-shaped bent rod is located on the rotation axis of the wing plate and the opening and closing seat;
The shape of the arc-shaped channel is matched with that of the arc-shaped bent rod, the arc-shaped channel is arranged on the opening and closing seat, and the arc-shaped channel is connected with the arc-shaped bent rod in a matched manner;
the end part of the arc-shaped bent rod is provided with a limiting block with a cross section larger than that of the arc-shaped bent rod, and the corresponding end part of the arc-shaped channel is provided with a limiting counter bore with a shape matched with that of the limiting block;
when the ducted fans are folded, the limiting block is matched and abutted in the limiting counter bore;
a fan driving unit is arranged on a central axis of a duct of the duct fan, and the fan driving unit comprises:
a driving member for providing driving force for the operation of the ducted fan and capable of forward and reverse rotation;
the output shaft is in transmission connection with the output end of the driving piece;
the clutch transmission piece is arranged at the end part of the driving piece and is in transmission connection with the output shaft, and when the driving piece rotates forwards/reversely, the clutch transmission piece controls the output shaft to externally transmit/stop transmission;
output ends are arranged at two ends of the driving piece, namely an output end A and an output end B;
the output shafts are two, namely an output shaft A and an output shaft B, and are respectively connected with the two output ends in a transmission mode;
the clutch transmission pieces are two and are respectively in transmission connection with the corresponding output shafts through thread pairs;
Under the action of forward rotation/reverse rotation of the driving piece, the output shaft moves along the axis direction of the output shaft relative to the corresponding clutch transmission piece, so that the output shaft is controlled to externally drive/stop driving.
2. The ducted fan switching device of claim 1, wherein: the wing plate is hinged with the opening and closing seat.
3. The ducted fan switching device of claim 1, wherein:
the clutch transmission part is a threaded ring, and is a ring with threads on the inner wall;
the output shaft is an output shaft A, one end of the output shaft A is in transmission connection with the output end of the driving piece, and the other end of the output shaft A penetrates through the threaded ring and extends out;
the part of the output shaft A between the threaded ring and the driving piece is sequentially provided with a threaded section A, a straight section A and a limit ring, threads on the wall surface of the threaded section A are matched with threads on the threaded ring, the wall surface of the straight section A is straight, and the limit ring is formed on the wall surface of the output shaft A in a protruding mode.
4. A ducted fan switching apparatus as claimed in claim 3, wherein: the device also comprises a resetting piece A which is an elastic piece and is in a compressed state, one end of the resetting piece A is abutted on the threaded ring, and the other end of the resetting piece A is abutted with the limit ring.
5. The ducted fan switching device of claim 1, wherein the clutch transmission comprises:
The transmission cover is of a cover body structure, and one end part of the transmission cover is in transmission connection with the driving piece;
the planetary gear train comprises a gear ring, a planetary gear carrier, a planetary gear and a sun gear, wherein the gear ring is fixedly connected with the inner side wall of the transmission cover;
the end cover is sleeved outside the transmission cover, the center of the end part of the end cover protrudes along the axial direction of the end cover to form a clutch sleeve, a threaded section B is formed on the outer wall of the top end of the clutch sleeve, a straight section B is arranged on the outer wall of the bottom end of the clutch sleeve, and the planetary carrier is sleeved on the clutch sleeve and is in threaded connection with the clutch sleeve;
the output shaft is an output shaft B which is coaxially and fixedly connected with the sun gear, penetrates through the planet carrier and the clutch sleeve and extends out of the end part of the end cover.
6. The ducted fan switching device of claim 5, wherein: the clutch sleeve is characterized by further comprising a locking piece which is sleeved on the output shaft B and is positioned between the planet carrier and the sun gear, the locking piece is static relative to the output shaft B, and a threaded hole C matched with the threaded section B is formed in the end face, close to the clutch sleeve, of the locking piece.
7. A ducted fan opening and closing method based on the ducted fan opening and closing device of any one of claims 1 to 6, characterized by the steps of:
A. unfolding
a1, the wing plate rotates relative to the opening and closing seat until the end surface of the wing plate contacts with the end surface of the opening and closing seat;
a2, blades of the ducted fan are in transmission connection with an output shaft B, a starting driving piece rotates positively, a transmission cover rotates to drive a gear ring to rotate, the gear ring drives a planet carrier to rotate until the planet carrier is meshed with a thread section B of a clutch sleeve, the planet carrier is locked after being meshed, at the moment, a planet gear train is powered by a sun gear, the output shaft B connected with the planet gear train rotates to drive the blades to rotate, and the ducted fan is started;
B. folding
b1, starting the driving piece to rotate reversely, and disengaging the planetary gear carrier from the clutch sleeve thread section B, wherein the planetary gear train outputs power by the planetary gear carrier, the sun gear is locked with the clutch sleeve by the locking piece, the output shaft B stops rotating, and the ducted fan stops rotating;
b2, the wing plate reversely rotates relative to the opening and closing seat until a limiting block at the end part of the arc-shaped bent rod is matched and abutted with a limiting counter bore of the arc-shaped channel;
b3, the driving piece continuously rotates reversely, an output shaft A is arranged at the output end A, the output shaft A stretches out after being meshed with the threaded ring, and the output shaft A drives outwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010708849.XA CN111907274B (en) | 2020-07-22 | 2020-07-22 | Ducted fan opening and closing device and application method thereof |
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| CN202010708849.XA CN111907274B (en) | 2020-07-22 | 2020-07-22 | Ducted fan opening and closing device and application method thereof |
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|---|---|---|---|---|
| US11772440B2 (en) * | 2018-06-04 | 2023-10-03 | Ali Salem | Multi-purpose wheels for use in multi-purpose vehicles |
| CN114475115A (en) * | 2021-12-30 | 2022-05-13 | 广州小鹏智慧充电科技有限公司 | Drive system and vehicle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6561456B1 (en) * | 2001-12-06 | 2003-05-13 | Michael Thomas Devine | Vertical/short take-off and landing aircraft |
| WO2007014531A1 (en) * | 2005-08-02 | 2007-02-08 | Peizhou Han | A vtol aircraft with tilt front rotors |
| DE102014207132A1 (en) * | 2014-04-14 | 2015-10-15 | Zf Friedrichshafen Ag | Tap / differential gear |
| CN103395491B (en) * | 2013-08-07 | 2015-12-02 | 龙川 | Shrouded propeller system of can cracking and use the hovercar of this system |
| CN205523488U (en) * | 2016-03-24 | 2016-08-31 | 南京航空航天大学 | Three duct VTOL hovercar |
| CN106427438A (en) * | 2016-10-18 | 2017-02-22 | 南京航空航天大学 | Airphibian with retractable rotor and control method of airphibian with retractable rotor |
| CN108437718A (en) * | 2018-02-28 | 2018-08-24 | 佛山市神风航空科技有限公司 | A kind of hovercar of vertical lift |
| CN109484634A (en) * | 2018-12-18 | 2019-03-19 | 酷黑科技（北京）有限公司 | A kind of culvert type aircraft |
| CN110065352A (en) * | 2019-05-24 | 2019-07-30 | 上海应用技术大学 | A kind of hovercar of tilting duct formula structure |
| JP2019172125A (en) * | 2018-03-29 | 2019-10-10 | 国立研究開発法人農業・食品産業技術総合研究機構 | Ducted fan drone |
| CN110356546A (en) * | 2019-07-02 | 2019-10-22 | 淮阴工学院 | Automatically controlled displacement single rotor No Tail Rotor electric unmanned helicopter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140103158A1 (en) * | 2012-10-12 | 2014-04-17 | Benjamin Lawrence Berry | AirShip Endurance VTOL UAV and Solar Turbine Clean Tech Propulsion |
| BR112016025875B1 (en) * | 2014-05-07 | 2022-08-23 | XTI Aircraft Company | VTOL AIRCRAFT |
| US10654584B2 (en) * | 2016-08-13 | 2020-05-19 | Modern Technology Solutions, Inc. | Refueling system and method |
-
2020
- 2020-07-22 CN CN202010708849.XA patent/CN111907274B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6561456B1 (en) * | 2001-12-06 | 2003-05-13 | Michael Thomas Devine | Vertical/short take-off and landing aircraft |
| WO2007014531A1 (en) * | 2005-08-02 | 2007-02-08 | Peizhou Han | A vtol aircraft with tilt front rotors |
| CN103395491B (en) * | 2013-08-07 | 2015-12-02 | 龙川 | Shrouded propeller system of can cracking and use the hovercar of this system |
| DE102014207132A1 (en) * | 2014-04-14 | 2015-10-15 | Zf Friedrichshafen Ag | Tap / differential gear |
| CN205523488U (en) * | 2016-03-24 | 2016-08-31 | 南京航空航天大学 | Three duct VTOL hovercar |
| CN106427438A (en) * | 2016-10-18 | 2017-02-22 | 南京航空航天大学 | Airphibian with retractable rotor and control method of airphibian with retractable rotor |
| CN108437718A (en) * | 2018-02-28 | 2018-08-24 | 佛山市神风航空科技有限公司 | A kind of hovercar of vertical lift |
| JP2019172125A (en) * | 2018-03-29 | 2019-10-10 | 国立研究開発法人農業・食品産業技術総合研究機構 | Ducted fan drone |
| CN109484634A (en) * | 2018-12-18 | 2019-03-19 | 酷黑科技（北京）有限公司 | A kind of culvert type aircraft |
| CN110065352A (en) * | 2019-05-24 | 2019-07-30 | 上海应用技术大学 | A kind of hovercar of tilting duct formula structure |
| CN110356546A (en) * | 2019-07-02 | 2019-10-22 | 淮阴工学院 | Automatically controlled displacement single rotor No Tail Rotor electric unmanned helicopter |
Non-Patent Citations (1)
| Title |
|---|
| 开口壁式涵道螺旋桨气动特性数值模拟;杜思亮;芦志明;唐正飞;;南京航空航天大学学报(第02期);第31-40页 * |
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Application publication date: 20201110 Assignee: Kunshan lifeimin Precision Machinery Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2023320000250 Denomination of invention: A duct fan opening and closing device and its usage method Granted publication date: 20230908 License type: Common License Record date: 20231211 |
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