CN113277075B - Collapsible many rotor unmanned aerial vehicle - Google Patents
Collapsible many rotor unmanned aerial vehicle Download PDFInfo
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- CN113277075B CN113277075B CN202110753364.7A CN202110753364A CN113277075B CN 113277075 B CN113277075 B CN 113277075B CN 202110753364 A CN202110753364 A CN 202110753364A CN 113277075 B CN113277075 B CN 113277075B
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- aerial vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/08—Helicopters with two or more rotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/30—Parts of fuselage relatively movable to reduce overall dimensions of aircraft
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Abstract
The invention discloses a foldable multi-rotor unmanned aerial vehicle, which comprises an unmanned aerial vehicle main body; a plurality of cross rods are uniformly arranged on the periphery of the unmanned aerial vehicle main body, the outer ends of the cross rods are fixedly provided with driving seats, and wings are rotatably arranged on the driving seats; the cross rod is of an electric telescopic rod structure, and the telescopic end of the cross rod is fixedly connected with the driving seat; unmanned aerial vehicle main part bottom is rotated and is installed supporting mechanism, supporting mechanism includes left socle and the right branch frame that bilateral symmetry set up, drive supporting mechanism pivoted adjustment mechanism is still installed to the bottom of unmanned aerial vehicle main part. When the unmanned aerial vehicle flies, the support mechanism is folded through the adjusting mechanism, so that the flying resistance of the unmanned aerial vehicle is reduced, the energy consumption of the unmanned aerial vehicle is reduced, when the unmanned aerial vehicle lands, the support mechanism is unfolded through the adjusting mechanism, the unmanned aerial vehicle is convenient to park, and when the unmanned aerial vehicle is stored, the support mechanism is folded through the adjusting mechanism, so that the storage space of the unmanned aerial vehicle is reduced.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a foldable multi-rotor unmanned aerial vehicle.
Background
Unmanned aircraft, commonly known as: unmanned planes, unmanned aerial vehicles, unmanned combat airplanes, and bee-type machines; the airplane is a wide range of remote control aircrafts without the need of a pilot to board and pilot, and is generally in particular to an unmanned reconnaissance airplane of the military.
Preceding many rotor unmanned aerial vehicle often adopts horn and the fixed mode as an organic whole of fuselage, greatly increased unmanned aerial vehicle area when standby, especially in unmanned aerial vehicle's transportation, the wing takes up an area of greatly and causes the damage of colliding with easily, has brought certain economic loss from now on. The foldable type horn is adopted to solve the problem, and the unfolding and folding actions of the existing horn folding structure are complex, so that time and labor are not saved.
Therefore, in view of the above current situation, there is an urgent need to develop a foldable multi-rotor unmanned aerial vehicle to overcome the shortcomings in the current practical application.
Disclosure of Invention
The invention aims to provide a foldable multi-rotor unmanned aerial vehicle to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a foldable multi-rotor unmanned aerial vehicle comprises an unmanned aerial vehicle main body; a plurality of transverse rods are uniformly arranged on the periphery of the unmanned aerial vehicle main body, driving seats are fixedly arranged at the outer ends of the transverse rods, and wings are rotatably arranged on the driving seats; the cross rod is of an electric telescopic rod structure, and the telescopic end of the cross rod is fixedly connected with the driving seat; unmanned aerial vehicle main part bottom is rotated and is installed supporting mechanism, supporting mechanism includes left socle and the right branch frame that bilateral symmetry set up, the bottom of unmanned aerial vehicle main part is still installed and is driven supporting mechanism pivoted adjustment mechanism.
As a further scheme of the invention: the left support and the right support are identical in structure and comprise two first support frames which are arranged in parallel, one ends of the two first support frames are fixedly connected through a rotating shaft, and the other ends of the two first support frames are fixedly connected through a second connecting rod; the left and right sides of unmanned aerial vehicle main part bottom is symmetry fixed mounting still has two first connecting seats, the rotation axis rotates and installs on first connecting seat.
As a further scheme of the invention: the size of the left bracket is larger than that of the right bracket.
As a further scheme of the invention: the driving seat is internally provided with a driving motor, and the output end of the driving motor is fixedly connected with the wings.
As a further scheme of the invention: still including the direction adjustment mechanism who replaces supporting mechanism, direction adjustment mechanism is including left adjustment mechanism and right adjustment mechanism, and left adjustment mechanism and right adjustment mechanism structure are the same, including two second support frames that are parallel to each other, and dwang fixed connection is passed through to the one end of two second support frames, the dwang rotates and installs on first support frame, and first support frame fixed mounting is in lower mounting panel bottom, and the other end fixed mounting of two second support frames has the third support frame, connects between two second support frames to install the third connecting rod, and when left adjustment mechanism and right adjustment mechanism draw in, two third support frames near and keep vertical.
As a further scheme of the invention: and a wing plate is fixedly mounted on the outer side of the third support frame.
As a further scheme of the invention: the lower mounting plate is provided with a driving mechanism, the driving mechanism comprises a rotating motor and an upper mounting plate, the upper side of the upper mounting plate is fixedly connected with the bottom of the unmanned aerial vehicle main body, and the lower side of the upper mounting plate is rotatably connected with the lower mounting plate through a driving shaft; and the output end of the rotating motor is fixedly connected with the driving shaft.
As a further scheme of the invention: the adjusting mechanism comprises at least one adjusting screw rod, a push-pull rod and an adjusting threaded sleeve; at least one mounting groove has been seted up to the bottom of unmanned aerial vehicle main part, adjusting screw rotates to install in the mounting groove, and adjusting screw's left and right sides symmetry is provided with two kinds of external screw threads that revolve to opposite, and adjusting screw's left and right sides symmetry threaded connection has two regulation swivel nuts, the upside and the mounting groove sliding connection of adjusting the swivel nut, the downside of mounting groove with the one end of push-and-pull rod is articulated, and articulated seat is installed to the other end of push-and-pull rod.
As a further scheme of the invention: still connect between two first support frames and install first connecting rod, articulated seat with first connecting rod fixed connection is through rotatory adjusting screw.
As a further scheme of the invention: the direction adjusting mechanism is adjusted by the adjusting mechanism, and a hinged seat arranged at the end of the push-pull rod is fixedly connected with the third connecting rod.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the unmanned aerial vehicle, the supporting mechanism is rotatably installed at the bottom of the unmanned aerial vehicle main body and comprises a left support and a right support which are arranged in a bilateral symmetry manner, the bottom of the unmanned aerial vehicle main body is further provided with an adjusting mechanism for driving the supporting mechanism to rotate, when the unmanned aerial vehicle flies, the supporting mechanism is folded through the adjusting mechanism, the resistance of the unmanned aerial vehicle during flying is reduced, the energy consumption of the unmanned aerial vehicle is reduced, when the unmanned aerial vehicle lands, the supporting mechanism is unfolded through the adjusting mechanism, the unmanned aerial vehicle is convenient to park, and when the unmanned aerial vehicle is stored, the supporting mechanism is folded through the adjusting mechanism, so that the storage space of the unmanned aerial vehicle is reduced;
2. the direction adjusting mechanism is arranged to replace the supporting mechanism, and the direction adjusting mechanism is adjusted to be opened and closed through the adjusting mechanism, so that the two wing plates are close to and kept vertical, and the flying direction of the unmanned aerial vehicle is adjusted.
Drawings
Fig. 1 is a schematic structural view of a foldable multi-rotor drone.
Fig. 2 is a schematic structural diagram of an adjustment mechanism in a foldable multi-rotor drone.
Fig. 3 is a schematic structural diagram of a right or left stand in a foldable multi-rotor drone.
Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 5 is a schematic structural diagram of a direction adjustment mechanism in embodiment 2 of the foldable multi-rotor drone.
Fig. 6 is a perspective view of a direction adjustment mechanism in foldable multi-rotor drone embodiment 2.
In the figure: 1-unmanned aerial vehicle main body, 2-cross bar, 3-driving seat, 4-wing, 5-supporting mechanism, 51-right support, 52-left support, 511-first connecting seat, 512-rotating shaft, 513-first connecting rod, 514-first supporting frame, 515-second connecting rod, 6-adjusting mechanism, 61-mounting groove, 62-adjusting screw rod, 63-adjusting screw sleeve, 64-push-pull rod, 65-hinged seat, 7-direction adjusting mechanism, 71-second supporting frame, 72-second connecting seat, 73-third supporting frame, 74-wing plate, 75-third connecting rod, 76-lower mounting plate, 8-driving mechanism, 81-rotating motor, 82-upper mounting plate and 83-driving shaft.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1 to 4, in an embodiment of the present invention, a foldable multi-rotor unmanned aerial vehicle includes an unmanned aerial vehicle main body 1; a plurality of cross rods 2 are uniformly arranged on the periphery of the unmanned aerial vehicle main body 1, the outer ends of the cross rods 2 are fixedly provided with driving seats 3, wings 4 are rotatably arranged on the driving seats 3, and the driving seats 3 drive the wings 4 to rotate so as to drive the unmanned aerial vehicle main body 1 to rise and fly in the air; in the embodiment of the invention, the cross rod 2 is of an electric telescopic rod structure, the telescopic end of the cross rod 2 is fixedly connected with the driving seat 3, when the unmanned aerial vehicle flies, the adjusting cross rod 2 extends, and after the unmanned aerial vehicle falls, the adjusting cross rod 2 shortens, so that the unmanned aerial vehicle is folded, and the storage space of the unmanned aerial vehicle is reduced; the unmanned aerial vehicle is characterized in that a supporting mechanism 5 is rotatably mounted at the bottom of the unmanned aerial vehicle main body 1, the supporting mechanism 5 comprises a left support 52 and a right support 51 which are arranged in bilateral symmetry, an adjusting mechanism 6 for driving the supporting mechanism 5 to rotate is further mounted at the bottom of the unmanned aerial vehicle main body 1, when the unmanned aerial vehicle flies, the supporting mechanism 5 is folded through the adjusting mechanism 6, the resistance of the unmanned aerial vehicle during flying is reduced, the energy consumption of the unmanned aerial vehicle is reduced, when the unmanned aerial vehicle lands, the supporting mechanism 5 is unfolded through the adjusting mechanism 6, the unmanned aerial vehicle is convenient to park, when the unmanned aerial vehicle is stored, the supporting mechanism 5 is folded through the adjusting mechanism 6, and the storage space of the unmanned aerial vehicle is reduced;
in the embodiment of the present invention, it should be noted that the left bracket 52 and the right bracket 51 have the same structure, and include two first support frames 514 that are arranged in parallel, one end of each of the two first support frames 514 is fixedly connected through a rotating shaft 512, and the other end of each of the two first support frames 514 is fixedly connected through a second connecting rod 515; two first connecting seats 511 are symmetrically and fixedly mounted on the left side and the right side of the bottom of the unmanned aerial vehicle main body 1, the rotating shaft 512 is rotatably mounted on the first connecting seats 511, and the rotating shaft 512 is rotated to drive the left support 52 or the right support 51 to rotate at the bottom of the unmanned aerial vehicle main body 1;
further, in the present embodiment, the adjusting mechanism 6 includes at least one adjusting screw 62, a push-pull rod 64, and an adjusting screw 63; the bottom of the unmanned aerial vehicle main body 1 is provided with at least one mounting groove 61, the adjusting screw 62 is rotatably mounted in the mounting groove 61, the left side and the right side of the adjusting screw 62 are symmetrically provided with two types of external threads with opposite rotation directions, the left side and the right side of the adjusting screw 62 are symmetrically in threaded connection with two adjusting screw sleeves 63, the upper side of each adjusting screw sleeve 63 is slidably connected with the mounting groove 61, the lower side of the mounting groove 61 is hinged with one end of the push-pull rod 64, and the other end of the push-pull rod 64 is hinged with a hinge seat 65;
still further, in the embodiment of the present invention, a first connecting rod 513 is further connected and installed between the two first supporting frames 514, the hinge base 65 is fixedly connected to the first connecting rod 513, the adjusting screw sleeve 63 is driven to slide in the installation groove 61 by rotating the adjusting screw rod 62, when the two adjusting screw sleeves 63 slide back to back, the push-pull rod 64 drives the left support 52 and the right support 51 to open, and when the two adjusting screw sleeves 63 slide opposite to each other, the push-pull rod 64 drives the left support 52 and the right support 51 to close;
further, in the embodiment of the present invention, a rotating motor for driving the adjusting screw 62 to rotate is installed in the main body 1 of the unmanned aerial vehicle.
In order to ensure that the left support 52 and the right support 51 are not blocked during the folding process, the left support 52 is larger than the right support 51, and of course, the left support 52 may be smaller than the right support 51.
In another embodiment of the present invention, a driving motor is installed inside the driving seat 3, and an output end of the driving motor is fixedly connected with the wing 4.
Example 2
Referring to fig. 1 to 4, in an embodiment of the present invention, a foldable multi-rotor unmanned aerial vehicle includes an unmanned aerial vehicle main body 1; a plurality of cross rods 2 are uniformly arranged on the periphery of the unmanned aerial vehicle main body 1, the outer ends of the cross rods 2 are fixedly provided with driving seats 3, wings 4 are rotatably arranged on the driving seats 3, and the driving seats 3 drive the wings 4 to rotate so as to drive the unmanned aerial vehicle main body 1 to rise and fly in the air; in the embodiment of the invention, the cross rod 2 is of an electric telescopic rod structure, the telescopic end of the cross rod 2 is fixedly connected with the driving seat 3, when the unmanned aerial vehicle flies, the adjusting cross rod 2 extends, and after the unmanned aerial vehicle falls, the adjusting cross rod 2 shortens, so that the unmanned aerial vehicle is folded, and the storage space of the unmanned aerial vehicle is reduced; the unmanned aerial vehicle is characterized in that a supporting mechanism 5 is rotatably mounted at the bottom of the unmanned aerial vehicle main body 1, the supporting mechanism 5 comprises a left support 52 and a right support 51 which are arranged in bilateral symmetry, an adjusting mechanism 6 for driving the supporting mechanism 5 to rotate is further mounted at the bottom of the unmanned aerial vehicle main body 1, when the unmanned aerial vehicle flies, the supporting mechanism 5 is folded through the adjusting mechanism 6, the resistance of the unmanned aerial vehicle during flying is reduced, the energy consumption of the unmanned aerial vehicle is reduced, when the unmanned aerial vehicle lands, the supporting mechanism 5 is unfolded through the adjusting mechanism 6, the unmanned aerial vehicle is convenient to park, when the unmanned aerial vehicle is stored, the supporting mechanism 5 is folded through the adjusting mechanism 6, and the storage space of the unmanned aerial vehicle is reduced;
in the embodiment of the present invention, it should be noted that the left bracket 52 and the right bracket 51 have the same structure, and include two first support frames 514 that are arranged in parallel, one end of each of the two first support frames 514 is fixedly connected through a rotating shaft 512, and the other end of each of the two first support frames 514 is fixedly connected through a second connecting rod 515; two first connecting seats 511 are symmetrically and fixedly mounted on the left side and the right side of the bottom of the unmanned aerial vehicle main body 1, the rotating shaft 512 is rotatably mounted on the first connecting seats 511, and the rotating shaft 512 is rotated to drive the left support 52 or the right support 51 to rotate at the bottom of the unmanned aerial vehicle main body 1;
further, in the present embodiment, the adjusting mechanism 6 includes at least one adjusting screw 62, a push-pull rod 64, and an adjusting screw 63; the bottom of the unmanned aerial vehicle main body 1 is provided with at least one mounting groove 61, the adjusting screw 62 is rotatably mounted in the mounting groove 61, the left side and the right side of the adjusting screw 62 are symmetrically provided with two types of external threads with opposite rotation directions, the left side and the right side of the adjusting screw 62 are symmetrically in threaded connection with two adjusting screw sleeves 63, the upper side of each adjusting screw sleeve 63 is slidably connected with the mounting groove 61, the lower side of the mounting groove 61 is hinged with one end of the push-pull rod 64, and the other end of the push-pull rod 64 is hinged with a hinge seat 65;
still further, in the embodiment of the present invention, a first connecting rod 513 is further connected and installed between the two first supporting frames 514, the hinge base 65 is fixedly connected to the first connecting rod 513, the adjusting screw sleeve 63 is driven to slide in the installation groove 61 by rotating the adjusting screw rod 62, when the two adjusting screw sleeves 63 slide back to back, the push-pull rod 64 drives the left support 52 and the right support 51 to open, and when the two adjusting screw sleeves 63 slide opposite to each other, the push-pull rod 64 drives the left support 52 and the right support 51 to close;
further, in the embodiment of the present invention, a rotating motor for driving the adjusting screw 62 to rotate is installed in the main body 1 of the unmanned aerial vehicle.
In order to ensure that the left support 52 and the right support 51 are not blocked during the folding process, the left support 52 is larger than the right support 51, and of course, the left support 52 may be smaller than the right support 51.
In another embodiment of the present invention, a driving motor is installed inside the driving seat 3, and an output end of the driving motor is fixedly connected with the wing 4.
Referring to fig. 5 to 6, the present embodiment is different from embodiment 1 in that:
the direction adjusting mechanism 7 is used for replacing the supporting mechanism 5, the direction adjusting mechanism 7 comprises a left adjusting mechanism and a right adjusting mechanism, the left adjusting mechanism and the right adjusting mechanism are identical in structure and comprise two second supporting frames 71 which are parallel to each other, one ends of the two second supporting frames 71 are fixedly connected through a rotating rod, the rotating rod is rotatably installed on the first supporting frame 514, in the embodiment, the first supporting frame 514 is fixedly installed at the bottom of the lower installation plate 76, the other ends of the two second supporting frames 71 are fixedly installed with third supporting frames 73, a third connecting rod 75 is connected and installed between the two second supporting frames 71, and when the left adjusting mechanism and the right adjusting mechanism are folded, the two third supporting frames 73 are abutted against and kept vertical;
it should be noted that the direction adjusting mechanism 7 is adjusted by the adjusting mechanism 6, and the hinge seat 65 installed at the end of the push-pull rod 64 is fixedly connected with the third connecting rod 75, so as to drive the direction adjusting mechanism 7 to open and close;
it is further noted that the rotary motor that drives the rotation of the adjustment screw 62 is now mounted to the lower mounting plate 76.
In another embodiment of the present invention, a driving mechanism 8 is disposed on the lower mounting plate 76, the driving mechanism 8 includes a rotating motor 82 and an upper mounting plate 82, an upper side of the upper mounting plate 82 is fixedly connected to the bottom of the main body 1 of the unmanned aerial vehicle, and a lower side of the upper mounting plate 82 is rotatably connected to the lower mounting plate 76 through a driving shaft 83; the output end of the rotating motor 82 is fixedly connected to the driving shaft 83.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (3)
1. A foldable multi-rotor unmanned aerial vehicle is characterized by comprising an unmanned aerial vehicle main body (1); a plurality of cross rods (2) are uniformly arranged on the periphery of the unmanned aerial vehicle main body (1), a driving seat (3) is fixedly arranged at the outer end of each cross rod (2), and wings (4) are rotatably arranged on the driving seats (3); the cross rod (2) is of an electric telescopic rod structure, and the telescopic end of the cross rod (2) is fixedly connected with the driving seat (3); the unmanned aerial vehicle comprises an unmanned aerial vehicle main body (1), a direction adjusting mechanism (7) is rotatably installed at the bottom of the unmanned aerial vehicle main body (1), the direction adjusting mechanism (7) comprises a left adjusting mechanism and a right adjusting mechanism, the left adjusting mechanism and the right adjusting mechanism are identical in structure and comprise two second supporting frames (71) which are parallel to each other, one ends of the two supporting frames (71) are fixedly connected through a rotating rod, the rotating rod is rotatably installed on a second connecting seat (72), the second connecting seat (72) is fixedly installed at the bottom of a lower mounting plate (76), the other ends of the two second supporting frames (71) are fixedly installed with third supporting frames (73), a third connecting rod (75) is installed between the two second supporting frames (71), when the left adjusting mechanism and the right adjusting mechanism are folded, the two third supporting frames (73) are close to and vertical, a wing plate (74) is fixedly installed at the outer side of the third supporting frame (73), a driving mechanism (8) is arranged on the lower mounting plate (76), the driving mechanism (8) comprises a rotating motor (81) and an upper mounting plate (82), the upper side of the upper mounting plate (82) is fixedly connected with the bottom of the unmanned aerial vehicle main body (1), and the lower mounting plate (82) is connected with the lower driving shaft (83); the output end of the rotating motor (81) is fixedly connected with the driving shaft (83), and the bottom of the lower mounting plate (76) is provided with an adjusting mechanism (6) which drives the left adjusting mechanism and the right adjusting mechanism.
2. Foldable multi-rotor drone according to claim 1, characterised in that inside the driving seat (3) there is a driving motor, the output of which is fixedly connected to the wing (4).
3. The foldable multi-rotor drone according to claim 1, characterized in that the adjustment mechanism (6) comprises at least one adjustment screw (62), a push-pull rod (64) and an adjustment screw (63); at least one mounting groove (61) is formed in the bottom of the lower mounting plate (76), the adjusting screw (62) is rotatably mounted in the mounting groove (61), two external threads with opposite rotation directions are symmetrically arranged on the left side and the right side of the adjusting screw (62), two adjusting threaded sleeves (63) are symmetrically in threaded connection with the left side and the right side of the adjusting screw (62), the upper side of each adjusting threaded sleeve (63) is slidably connected with the mounting groove (61), the lower side of each adjusting threaded sleeve (63) is hinged to one end of the push-pull rod (64), the other end of each push-pull rod (64) is hinged to a hinged seat (65), and the hinged seats (65) are fixedly connected with the third connecting rod (75).
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CN202110753364.7A CN113277075B (en) | 2021-07-02 | 2021-07-02 | Collapsible many rotor unmanned aerial vehicle |
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CN113277075B true CN113277075B (en) | 2022-10-28 |
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CN205872439U (en) * | 2016-08-08 | 2017-01-11 | 武汉和一领航科技有限公司 | Retractable unmanned aerial vehicle |
CN106379515B (en) * | 2016-11-14 | 2020-03-31 | 深圳市道通智能航空技术有限公司 | Scalable oar arm component and unmanned aerial vehicle |
CN207374644U (en) * | 2017-10-20 | 2018-05-18 | 施铠曼航空科技(上海)有限公司 | A kind of small-sized multi-rotor unmanned aerial vehicle of taking photo by plane |
CN109896004B (en) * | 2019-03-25 | 2022-11-15 | 上海应用技术大学 | Unmanned aerial vehicle with telescopic arm |
CN111874223A (en) * | 2020-08-11 | 2020-11-03 | 青海崇霖测绘科技有限公司 | Be used for surveying and mapping unmanned aerial vehicle that takes photo by plane |
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