Unmanned aerial vehicle with upper paddle and lower paddle arranged

Abstract

The unmanned aerial vehicle comprises a rack and a plurality of vehicle arms which are symmetrically arranged in pairs relative to the rack, one end of each vehicle arm is fixedly connected with the rack, the other end of each vehicle arm is provided with a motor and a pair of paddles, the motors are correspondingly connected with the paddles, and the installation directions of the motors arranged on the adjacent vehicle arms are opposite. One motor is mounted on the upper surface of each arm, the other adjacent motor is mounted on the lower surface of each arm, the mounting directions of the adjacent motors are opposite, and the corresponding adjacent blades rotate forwards and reversely due to the fact that the mounting directions of the motors on the adjacent arms are opposite, so that the forwards-rotating blades and the reversely-rotating blades are partially overlapped in space; the space of the unmanned aerial vehicle is reduced, and the problems that in the prior art, a multi-rotor unmanned aerial vehicle is large in size and inconvenient to carry are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle with a multi-rotor upper and lower blade layout. Background Art

[0002] In recent years, the drone industry has developed rapidly, especially in the fields of aerial photography, logistics, firefighting, etc. Traditional quadcopter and hexacopter multi-rotor drones have certain advantages in flight stability and carrying capacity, but they need a large space between the arms for the rotation of the blades, are large in size, and are relatively stable to carry, so they are still not portable enough. Summary of the invention

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0004] A drone with an upper and lower blade layout comprises a frame, and a plurality of arms symmetrically arranged in pairs relative to the frame, one end of each arm is fixedly connected to the frame, and the other end is provided with a motor and a blade, the motor arranged on the same arm is connected to the corresponding blade, the adjacent motors are installed in opposite directions, and the corresponding adjacent blades are installed in opposite directions.

[0005] Furthermore, the upper surface of one of the arms is connected to the stator of a motor, and the rotor is correspondingly connected to a pair of blades; the lower surface of another adjacent arm is connected to the stator of another motor, and the rotor is correspondingly connected to another pair of blades.

[0006] Furthermore, the machine arm includes a first arm and a second arm, and the first arm and the second arm are provided with a folding mechanism, and the first arm and the second arm can be folded or unfolded relative to the folding mechanism.

[0007] Furthermore, the folding mechanism includes a first hinged portion and a second hinged portion, the first hinged portion is arranged on the first support arm, the second hinged portion is arranged on the second support arm, and the first hinged portion is hinged to the second hinged portion.

[0008] Furthermore, a slot is provided at the port of the first arm, and a connector is provided at the port of the second arm. When the arms are unfolded, the connector matches the slot.

[0009] Furthermore, a first connecting portion is provided on the first arm, and a second connecting portion is provided on the second arm. The first connecting portion and the second connecting portion are detachably connected. After the first connecting portion and the second connecting portion are connected, they are sleeved on the outer periphery of the folding mechanism.

[0010] Furthermore, the second hinged part includes a connecting shaft, a torsion spring and a through hole, the connecting shaft passes through the through hole and the torsion spring, the first hinged part includes a left connecting part and a right connecting part, the two ends of the connecting shaft are respectively connected to the left connecting part and the right connecting part, and the through hole and the torsion spring are arranged between the left connecting part and the right connecting part.

[0011] Furthermore, a heat dissipation device is respectively connected to the stator of each motor.

[0012] Furthermore, the number of motors is six, and the drone is a six-axis multi-rotor drone with an upper and lower blade layout.

[0013] Furthermore, the number of motors is four, and the drone is a quad-rotor drone with an upper and lower blade layout.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the utility model compared with the prior art is as follows: in the drone structure with upper and lower blades, one motor is installed on the upper surface of the arm, and another adjacent motor is installed on the lower surface of the arm. The adjacent motors are installed on the corresponding arms in opposite directions. Each motor is installed with a corresponding blade, and the adjacent blades are installed on the upper and lower surfaces of the arm respectively. When the motor rotates, the blades installed on the upper surface rotate in reverse, and the blades installed on the lower surface rotate forward; or the blades installed on the upper surface rotate forward, and the blades installed on the lower surface rotate in reverse. This layout structure allows the forward-rotating blades and the reverse-rotating blades to partially overlap in space, thereby reducing the wheelbase of the drone. The volume of the drone is reduced and the portability of the drone is improved by the blades arranged at intervals between the upper and lower layers and the motors arranged at intervals between the upper and lower layers.

[0015] In a six-axis multi-rotor drone with an upper and lower blade layout, three motors are installed at intervals on the upper surface of the corresponding arm, located on the upper layer of the arm, the motor rotates in the opposite direction, which is a reverse motor, and a reverse motor is correspondingly connected to a pair of blades, which is a reverse blade. The three pairs of reverse blades are located at intervals on the upper layer of the arm. As the reverse motor rotates in the opposite direction, the other three motors are installed at intervals on the lower surface of the corresponding arm, located on the lower layer of the arm, the motor rotates forward, which is a forward motor, and a forward motor is correspondingly connected to a pair of blades, which is a forward blade. The three pairs of forward blades are located at intervals on the lower layer of the arm, and the forward blades rotate forward as the motor rotates forward, and two adjacent motors are installed in opposite directions, and two adjacent pairs of blades are installed in opposite directions. This layout structure allows the forward blades and the reverse blades to partially overlap in space, thereby reducing the wheelbase of the drone. The volume of the drone is reduced and the portability of the drone is improved through the blades arranged at intervals on the upper and lower layers and the motor layout arranged at intervals on the upper and lower layers.

[0016] In a quad-rotor drone with a top-bottom layout, two motors are installed at intervals on the upper surface of the corresponding arm, located at the upper layer of the arm, the motor rotates in the opposite direction, which is a reverse motor, and one reverse motor is correspondingly connected to a pair of blades, which is a reverse blade. The two pairs of reverse blades are located at intervals on the upper layer of the arm. As the reverse motor rotates in the opposite direction, the other two motors are installed at intervals on the lower surface of the corresponding arm, located at the lower layer of the arm, the motor rotates forward, which is a forward motor, and one forward motor is correspondingly connected to a pair of blades, which is a forward blade. The two pairs of forward blades are located at the lower layer of the arm, and the forward blades rotate forward as the motor rotates forward, and the adjacent two motors are installed in opposite directions, and the adjacent two pairs of blades are installed in opposite directions. This layout structure allows the forward blades and the reverse blades to partially overlap in space, thereby reducing the wheelbase of the drone. The volume of the drone is reduced and the portability of the drone is improved through the blades arranged at intervals between the upper and lower layers and the motor layout arranged at intervals between the upper and lower layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of a six-axis multi-rotor UAV of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a four-axis multi-rotor UAV of the utility model;

[0020] Figure 3 This is a schematic diagram of the folding structure of the UAV of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the folding mechanism of the utility model;

[0022] Description of the main component symbols: 1. Frame; 2. Arm; 201. First arm; 211. Card slot; 202. Second arm; 203. Card connector; 21. First arm; 22. Second arm; 23. Third arm; 24. Fourth arm; 25. Fifth arm; 26. Sixth arm; 212. First connecting part; 222. Second connecting part; 10. First arm; 20. Second arm; 30. Third arm; 40. Fourth arm; 3. Motor; 31. First motor; 310. First motor; 32. Second motor; 320. Second motor; 33. Third motor; 330, the third motor; 34, the fourth motor; 340, the fourth motor; 35, the fifth motor; 36, the sixth motor; 4, the blades; 41, the first pair of blades; 410, the first pair of blades; 42, the second pair of blades; 420, the second pair of blades; 43, the third pair of blades; 430, the third pair of blades; 44, the fourth pair of blades; 440, the fourth pair of blades; 45, the fifth pair of blades; 46, the sixth pair of blades; 5, the folding mechanism; 51, the first hinge; 52, the second hinge; 511, the left connecting part; 512, the right connecting part; 521, the connecting shaft; 6, the heat dissipation device.

[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] In order to make the technical personnel of the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by the technical personnel in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to include but are not limited to inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] See also Figure 1-4 The utility model embodiment provides a drone with an upper and lower blade layout, including a frame 1 and a plurality of arms 2, the plurality of arms 2 are symmetrically arranged in pairs, one end of each arm 2 is fixedly connected to the frame 1, and the other end of each arm 2 is provided with a motor 3 and a pair of blades 4, the motor 3 and the blades 4 are correspondingly connected, the installation directions of adjacent motors 3 are opposite, and the installation directions of corresponding adjacent blades 4 are opposite; specifically, a part of the motors 3 are arranged at intervals on the upper surface of the arms 2, and another part of the motors 3 are arranged at intervals on the lower surface of the arms 2, and a corresponding part of the blades 4 are arranged at intervals on the upper surface of the arms, and another part of the blades 4 are arranged at intervals on the lower surface of the arms.

[0027] In some embodiments, the motor 3 disposed at intervals on the upper surface of the arm 2 rotates in the reverse direction, and is a reversing motor. The stator of each reversing motor 3 is fixedly connected to the upper surface of the arm 2, and the rotor is fixedly connected to a pair of blades 4 correspondingly, and the corresponding blades 4 are reversing blades. The reversing blades rotate in the reverse direction as the reversing motor rotates in the reverse direction. The motor 3 disposed at intervals on the lower surface of the arm 2 rotates in the forward direction, and is a forward motor. The stator of each forward motor 3 is fixedly connected to the lower surface of the arm 2, and the rotor is fixedly connected to a pair of blades 4 correspondingly, and the corresponding blades 4 are forward blades. The forward blades rotate in the forward direction as the forward motor rotates in the forward direction.

[0028] In some embodiments, the motor 3 arranged at intervals on the upper surface of the arm 2 rotates forward, and is a forward motor. The stator of each forward motor 3 is fixedly connected to the upper surface of the arm 2, and the rotor is fixedly connected to a pair of blades 4 correspondingly, and the corresponding blades 4 are forward blades. The forward blades rotate forward with the forward rotation of the forward motor. The motor 3 arranged at intervals on the lower surface of the arm 2 rotates reversely, and is a reverse motor. The stator of each reverse motor 3 is fixedly connected to the lower surface of the arm 2, and the rotor is fixedly connected to a pair of blades 4 correspondingly, and the corresponding blades 4 are reverse blades. The reverse blades rotate reversely with the reverse rotation of the reverse motor.

[0029] In a multi-axis multi-rotor drone with an upper and lower blade layout, some of the motors are installed at intervals on the upper surface of the arm, located in the upper layer of the arm, and the other motors are installed at intervals on the lower surface of the arm, located in the lower layer of the arm. The blades 4 corresponding to the forward rotation of the motor 3 are forward blades, and the blades 4 corresponding to the reverse rotation of the motor 3 are reverse blades. The forward blades are deployed below the arm 2, and the reverse blades are deployed above the arm 2, or the forward blades are deployed above the arm 2, and the reverse blades are deployed below the arm 2. The design of the forward blades and the reverse blades makes the forward blades and the reverse blades of the drone overlap partially during the rotation process, while maintaining the lift of the drone, making the overall wheelbase of the drone smaller. Specifically, the wheelbase of the drone refers to the distance between the centers of the two motors on the diagonal line, which effectively reduces the size of the drone, thereby making the volume of the drone smaller. Due to the reasonable layout of the forward installation and reverse installation of the motor 3, the forward installation and reverse installation of the blades 4 are reasonably arranged, and the drone can maintain good flight stability and carrying capacity.

[0030] The machine arm 2 includes a first arm 201 and a second arm 202 . A folding mechanism 5 is disposed on the first arm 201 and the second arm 202 . The first arm 201 and the second arm 202 can be folded or unfolded relative to the folding mechanism 5 .

[0031] The folding mechanism 5 enables the arm 2 to be folded. Since the motors are spaced apart on the upper and lower surfaces of the arm of the drone, and the corresponding blades are spaced apart on the upper and lower surfaces of the arm, when the drone is in the folded state, the wheelbase becomes smaller, and the height of the entire drone is reduced after folding, which further reduces the size of the drone and facilitates carrying and storage.

[0032] The end of the first arm 201 is provided with a slot 211, and the end of the second arm 202 is provided with a snap-in 203. When the arm 2 is unfolded, the snap-in 203 matches the slot 211. When unfolded, the slot 211 of the first arm 201 matches the snap-in 203 of the second arm 202, making the connection more stable and able to resist the influence of strong wind and airflow during flight.

[0033] The first arm 201 is provided with a first connection part 212, and the second arm 202 is provided with a second connection part 222. The first connection part 212 and the second connection part 222 are detachably connected. After the first connection part 212 and the second connection part 222 are connected, they are sleeved on the outer periphery of the folding mechanism 5. The first connection part 212 and the second connection part 222 protect the folding mechanism 5, further enhancing the stability of the folding mechanism.

[0034] The folding mechanism 5 includes a first hinged portion 51 and a second hinged portion 52. The first hinged portion 51 is arranged on the first arm 201, and the second hinged portion 52 is arranged on the second arm 202. The first hinged portion 51 is hinged to the second hinged portion 52. The second hinged portion 52 includes a connecting shaft 521, a torsion spring and a through hole. The connecting shaft 521 passes through the through hole and the torsion spring. The first hinged portion 51 includes a left connecting portion 511 and a right connecting portion 512. The two ends of the connecting shaft 521 are respectively connected to the left connecting portion 511 and the right connecting portion 512. The through hole and the torsion spring are arranged between the left connecting portion 511 and the right connecting portion 512. By using a hinged structure to fold and unfold the first arm 201 and the second arm 202, the operation is convenient and the reliability is high.

[0035] The stator of each motor 3 is connected with a heat sink 6 . The heat sink 6 is used to dissipate heat from the motor 3 .

[0036] In one embodiment, if Figure 1As shown, the drone is a six-axis multi-rotor drone with an upper and lower blade layout, including a frame 1 and six arms 2, the six arms 2 are a first arm 21, a second arm 22, a third arm 23, a fourth arm 24, a fifth arm 25 and a sixth arm 26, the first arm 21 is adjacent to the second arm 22, the second arm 22 is adjacent to the third arm 23, the third arm 23 is adjacent to the fourth arm 24, the fourth arm 24 is adjacent to the fifth arm 25, the fifth arm 25 is adjacent to the sixth arm 26, and the sixth arm 26 is adjacent to the first arm 21, and the six arms 2 are symmetrically arranged on the frame 1 in pairs. Specifically, the first arm 21 and the fourth arm 24 are symmetrically arranged on the frame 1, the second arm 22 and the fifth arm 25 are symmetrically arranged on the frame 1, and the third arm 23 and the sixth arm 26 are symmetrically arranged on the frame 1. One end of each arm 2 is fixedly connected to the frame 1, and the other end of each arm 2 is provided with a motor 3 and a pair of blades 4. Three motors 3 are arranged at intervals on the upper surface of the arm 2, and the other three motors 3 are arranged at intervals on the lower surface of the arm 2. Specifically, the motor 3 includes a first motor 31, a second motor 32, a third motor 33, a fourth motor 34, a fifth motor 35 and a sixth motor 36; the blades 4 include a first pair of blades 41, a second pair of blades 42, a third pair of blades 43, a fourth pair of blades 44, a fifth pair of blades 45 and a sixth pair of blades 46. One end of the first arm 21 is fixedly connected to the frame 1, and the upper surface of the other end is provided with a first motor 31. The stator of the first motor 31 is fixedly connected to the first arm 21, and the rotor of the first motor 31 is fixedly connected to the first pair of blades 41. The first motor 31 rotates to drive the first pair of blades 41 to rotate; one end of the second arm 22 is fixedly connected to the frame 1, and the second motor 32 is arranged at the other end of the second arm 22 The lower surface of the sixth arm 26 is installed in the opposite direction relative to the first motor 31, the stator of the second motor 32 is fixedly connected to the lower surface of the second arm 22, the rotor of the second motor 32 is fixedly connected to the second pair of blades 42, and the second motor 32 rotates to drive the second pair of blades 42 to rotate; and by analogy, one end of the sixth arm 26 is fixedly connected to the frame 1, the stator of the sixth motor 36 is fixedly connected to the lower surface of the other end of the sixth arm 26, the rotor of the sixth motor 36 is fixedly connected to the sixth pair of blades 46, and the sixth motor 36 rotates to drive the sixth pair of blades 46 to rotate, and the installation direction of the sixth motor 36 is opposite to the installation direction of the adjacent first motor 31, and the installation direction of the sixth motor 36 is opposite to the installation direction of the adjacent fifth motor 35.The first motor 31, the third motor 33 and the fifth motor 35 rotate in the opposite direction and are spaced apart on the upper surface of the arm 2, the second motor 32, the fourth motor 34 and the sixth motor 36 rotate in the forward direction and are spaced apart on the lower surface of the arm 2, or the first motor 31, the third motor 33 and the fifth motor 35 rotate in the forward direction and are spaced apart on the upper surface of the arm 2, the second motor 32, the fourth motor 34 and the sixth motor 36 rotate in the opposite direction and are spaced apart on the lower surface of the arm 2, so that three reverse motors are placed on top and the other three forward motors are placed on the bottom, and the upper and lower motors are spaced apart, and the motors The motor 3 rotates forward to drive the corresponding blade 4 to rotate forward, and the motor 3 rotates reversely to drive the corresponding blade 4 to rotate reversely, the forward rotating blade 4 is deployed below the machine arm 2, and the reverse rotating blade 4 is deployed above the machine arm 2, or the reverse rotating blade 4 is deployed below the machine arm 2, and the forward rotating blade 4 and the reverse rotating blade 4 are deployed above the machine arm 2, and the forward rotating blade 4 and the reverse rotating blade 4 are arranged at intervals. During the rotation of the UAV, the forward rotating blade 4 and the reverse rotating blade 4 partially overlap, which can effectively reduce the size of the UAV while maintaining the lift of the UAV, thereby reducing the overall wheelbase and volume of the UAV.

[0037] In another embodiment, if Figure 2As shown, the UAV is a quad-rotor UAV with an upper and lower blade layout, including a frame 1 and four arms 2, the four arms 2 are symmetrically arranged on the frame 1 in pairs, one end of each arm 2 is fixedly connected to the frame 1, and the other end of each arm 2 is provided with a motor 3 and a pair of blades 4, two motors 3 are arranged at intervals on the upper surface of the arm 2, and the other two motors 3 are arranged at intervals on the lower surface of the arm 2. Specifically, the arm 2 includes a first arm 10, a second arm 20, a third arm 30 and a fourth arm 40, the first arm 10 is adjacent to the second arm 20, the second arm 20 is adjacent to the third arm 30, the third arm 30 is adjacent to the fourth arm 40, and the fourth arm 40 is adjacent to the first arm 10, the motor 3 includes a first motor 310, a second motor 320, a third motor 330 and a fourth motor 340, and the blades 4 include a first pair of blades 410, a second pair of blades 420, a third pair of blades 430 and a fourth pair of blades 440; one end of the first arm 10 is fixedly connected to the frame 1, the stator of the first motor 310 is mounted on the upper surface of the other end of the first arm 10, the first pair of blades 410 is mounted on the rotor of the first motor 310, and the first motor 310 drives the first pair of blades 410 to rotate Rotation, one end of the second arm 20 is fixedly connected to the frame 1, the stator of the second motor 320 is mounted on the lower surface of the other end of the second arm 20, the second pair of blades 420 is mounted on the rotor of the second motor, and the second motor 320 drives the second pair of blades 420 to rotate, one end of the third arm 30 is fixedly connected to the frame 1, the stator of the third motor 330 is mounted on the upper surface of the other end of the third arm 30, the third pair of blades 430 is mounted on the rotor of the third motor 330, and the third motor 330 drives the third pair of blades 430 to rotate, one end of the fourth arm 40 is fixedly connected to the frame 1, the stator of the fourth motor 340 is mounted on the lower surface of the other end of the fourth arm 40, the fourth pair of blades 440 is mounted on the rotor of the fourth motor 340, and the fourth motor 340 drives the fourth pair of blades 440 to rotate. In some embodiments, the first motor 310 on the first arm 10 is installed in reverse, the second motor 320 on the second arm 20 is installed in forward, the third motor 330 on the third arm 30 is installed in reverse, and the fourth motor 340 on the fourth arm 40 is installed in forward. In this way, two motors rotating in reverse are placed on the top, and the other two motors rotating in forward direction are placed on the bottom, and the upper and lower motors are arranged at intervals. The first motor 310 rotates forward to drive the corresponding first pair of blades 410 to rotate forward, the third motor 330 rotates forward to drive the corresponding third pair of blades 430 to rotate forward, the second motor 320 rotates reversely to drive the corresponding second pair of blades 420 to rotate reversely, and the fourth motor 340 rotates reversely to drive the corresponding fourth pair of blades 440 to rotate reversely. The forward rotating blades 4 are deployed below the arm 2, and the reverse rotating blades 4 are deployed above the arm 2. The forward rotating blades 4 and the reverse rotating blades 4 are arranged on the top and bottom.During operation of the UAV, the forward-rotating blades 4 and the reverse-rotating blades 4 partially overlap, which can effectively reduce the size of the UAV while maintaining the lift of the UAV, thereby reducing the overall wheelbase and volume of the UAV.

[0038] Or the first motor 310 on the first arm 10 is installed in the forward direction, the second motor 320 on the second arm 20 is installed in the reverse direction, the third motor 330 on the third arm 30 is installed in the forward direction, and the fourth motor 340 on the fourth arm 40 is installed in the reverse direction, with two motors rotating in the forward direction being placed on the top and the other two motors rotating in the reverse direction being placed on the bottom, and the upper and lower motors being arranged at intervals, the first motor 310 reversely rotates to drive the corresponding first pair of blades 410 to rotate in the reverse direction, the third motor 330 reversely rotates to drive the corresponding third pair of blades 430 to rotate in the reverse direction, the second motor 320 rotates forward to drive the corresponding second pair of blades 420 to rotate forward, the fourth motor 340 rotates forward to drive the corresponding fourth pair of blades 440 to rotate forward, the reverse rotating blades 4 are unfolded below the arm 2, the forward rotating blades 4 are unfolded above the arm 2, and the forward rotating blades 4 and the reverse rotating blades 4 are arranged in the upper and lower directions. During the rotation of the drone, the forward rotating blades 4 and the reverse rotating blades 4 partially overlap, which can effectively reduce the size of the drone while maintaining the lift of the drone, thereby reducing the overall wheelbase and volume of the drone.

[0039] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A drone with upper and lower blades, characterized in that: The invention comprises a frame (1), and a plurality of arms (2) symmetrically arranged in pairs relative to the frame (1), wherein one end of each arm (2) is fixedly connected to the frame (1), and the other end is provided with a motor (3) and a propeller blade (4), and the motor (3) arranged on the same arm (2) is connected to the corresponding propeller blade (4), and adjacent motors (3) are installed in opposite directions, and corresponding adjacent propeller blades (4) are installed in opposite directions; The upper surface of one of the machine arms (2) is connected to the stator of the motor (3), and the corresponding rotor is connected to a pair of blades (4) respectively; the lower surface of another adjacent machine arm (2) is connected to the stator of another motor (3), and the corresponding rotor is connected to another pair of blades (4) respectively; The machine arm (2) comprises a first arm (201) and a second arm (202); the first arm (201) and the second arm (202) are provided with a folding mechanism (5); the first arm (201) and the second arm (202) can be folded or unfolded relative to the folding mechanism (5).

2. The UAV with upper and lower blades layout as claimed in claim 1, characterized in that: The folding mechanism (5) comprises a first hinged portion (51) and a second hinged portion (52); the first hinged portion (51) is arranged on the first support arm (201), the second hinged portion (52) is arranged on the second support arm (202), and the first hinged portion (51) and the second hinged portion (52) are hingedly connected.

3. The UAV with upper and lower blades as claimed in claim 2, characterized in that: The port of the first arm (201) is provided with a card slot (211), and the port of the second arm (202) is provided with a card connector (203); when the machine arm (2) is unfolded, the card connector (203) matches the card slot (211).

4. The UAV with upper and lower blades layout as claimed in claim 3, characterized in that: The first support arm (201) is provided with a first connection portion (212), and the second support arm (202) is provided with a second connection portion (222). The first connection portion (212) and the second connection portion (222) are detachably connected. After the first connection portion (212) and the second connection portion (222) are connected, they are sleeved on the outer periphery of the folding mechanism (5).

5. The UAV with upper and lower blades as claimed in claim 4, characterized in that: The second hinged portion (52) comprises a connecting shaft (521), a torsion spring and a through hole, the connecting shaft (521) passing through the through hole and the torsion spring, the first hinged portion (51) comprising a left connecting portion (511) and a right connecting portion (512), the two ends of the connecting shaft (521) being respectively connected to the left connecting portion (511) and the right connecting portion (512), and the through hole and the torsion spring being arranged between the left connecting portion (511) and the right connecting portion (512).

6. The UAV with upper and lower blades as claimed in claim 5, characterized in that: A heat dissipation device (6) is respectively connected to the stator of each motor (3).

7. The UAV with upper and lower blades as described in any one of claims 1 to 6, characterized in that: The number of arms (2) is six, and the drone is a six-axis multi-rotor drone with an upper and lower blade layout.

8. The drone with upper and lower blades as described in any one of claims 1 to 6, characterized in that: The number of arms (2) is four, and the drone is a quad-rotor drone with an upper and lower blade layout.

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