Unmanned aerial vehicle

Abstract

The unmanned aerial vehicle comprises a fuselage, at least one first camera arranged at the bottom of the fuselage in a protruding mode and an undercarriage rotationally connected with the fuselage, the undercarriage can be switched between a first state and a second state, and the undercarriage is folded at the bottom of the fuselage when in the first state. The undercarriage is unfolded to support the fuselage when in the second state, and when the undercarriage is unfolded, the vertical distance from the free end of the undercarriage to the bottom of the fuselage is larger than the maximum distance of the first camera protruding out of the bottom of the fuselage. According to the unmanned aerial vehicle, the undercarriage is arranged, the undercarriage is unfolded to support the fuselage when the unmanned aerial vehicle lands, the undercarriage can be folded to avoid shielding the first camera, and meanwhile, the vertical distance from the free end of the undercarriage to the bottom of the fuselage is larger than the maximum distance of the first camera protruding out of the bottom of the fuselage; and when the undercarriage is unfolded and supported, the first camera is not in contact with the structure at the landing position, so that the first camera is prevented from being collided and abraded when the unmanned aerial vehicle lands.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of unmanned aerial vehicles, and in particular to an unmanned aerial vehicle. BACKGROUND

[0002] At present, unmanned aerial vehicles are widely used in aerial photography, surveying and mapping and other fields. When an unmanned aerial vehicle is applied to panoramic shooting, a lens needs to be carried to realize the shooting function. However, when the unmanned aerial vehicle lands, the camera arranged at the bottom of the fuselage of the unmanned aerial vehicle usually protrudes from the bottom of the fuselage, and the camera is prone to collide with the landing support plane such as the ground or table surface or other obstacles, resulting in wear of the camera, decline of shooting quality, and even damage and scrapping of the camera, which greatly shortens the service life of the camera and increases the use and maintenance costs. CONTENT OF THE UTILITY MODEL

[0003] To overcome the problems in the related art, the present disclosure provides an unmanned aerial vehicle.

[0004] According to a first aspect of the present disclosure, an unmanned aerial vehicle is provided, comprising:

[0005] a fuselage;

[0006] at least one first camera arranged protruding at the bottom of the fuselage;

[0007] a landing gear rotatably connected with the fuselage to switch the landing gear between a first state and a second state; when the landing gear is in the first state, the landing gear is retracted at the bottom of the fuselage; when the landing gear is in the second state, the landing gear is unfolded to support the fuselage;

[0008] wherein when the landing gear is unfolded, the vertical distance from the free end of the landing gear to the bottom of the fuselage is greater than the maximum distance by which the first camera protrudes from the bottom of the fuselage.

[0009] In a possible implementation, the unmanned aerial vehicle is provided with a plurality of landing gears, and the plurality of landing gears are arranged around the first camera.

[0010] When the plurality of landing gears are in the second state, the free ends of the landing gears extend to the outside of the fuselage.

[0011] In a possible implementation, the unmanned aerial vehicle is provided with two landing gears, and the unmanned aerial vehicle further comprises a driving mechanism and a transmission mechanism, and the driving mechanism is connected with the two landing gears through the transmission mechanism to drive the two landing gears to unfold or retract simultaneously.

[0012] In a possible implementation, the driving mechanism comprises a motor assembly, the transmission mechanism comprises a first transmission assembly and a second transmission assembly, the first transmission assembly is connected with one of the two landing gears, and the second transmission assembly is connected with the other of the two landing gears.

[0013] The first transmission assembly is further connected with an output end of the motor assembly, and the first transmission assembly is in meshing transmission with the second transmission assembly.

[0014] In a possible implementation, the first transmission assembly and the second transmission assembly each comprise an oscillating arm, a first end of the oscillating arm of the first transmission assembly is fixedly connected with an output end of the motor assembly, and a first end of the oscillating arm of the second transmission assembly is in meshing transmission with the first end of the oscillating arm of the first transmission assembly.

[0015] The motor assembly drives the first end of the oscillating arm of the first transmission assembly to rotate in a first direction, and the second end of the oscillating arm of the second transmission assembly rotates in a second direction, the first direction and the second direction being opposite directions.

[0016] In a possible implementation, the unmanned aerial vehicle further comprises a mounting box, and the first end of the oscillating arm is mounted in the mounting box.

[0017] A rotating shaft is arranged in the mounting box, and the first end of the oscillating arm of the second transmission assembly is sleeved on the rotating shaft and can rotate around the rotating shaft.

[0018] In a possible implementation, an output end of the motor assembly is further provided with a position detection device, the position detection device is mounted in the mounting box, and the position detection device is electrically connected with a controller of the unmanned aerial vehicle.

[0019] In a possible implementation, the first transmission assembly and the second transmission assembly each comprise a connecting rod, and the connecting rod is connected with the second end of the oscillating arm and the landing gear respectively.

[0020] The connecting rod is in a Y shape, the connecting rod comprises a rod body and two branch rods connected with the rod body respectively, the rod body is rotationally connected with the landing gear, and the second end of the oscillating arm is rotationally connected between the two branch rods.

[0021] In a possible implementation, when the landing gear is in a second state, a preset angle is formed between the oscillating arm and the connecting rod, and the preset angle ranges from 5° to 15°.

[0022] In a possible implementation, the unmanned aerial vehicle comprises a bottom shell, the landing gear is rotationally connected with the bottom shell, and the two landing gears are symmetrically arranged on two sides of the first camera.

[0023] The bottom shell is provided with a containing groove, and the landing gear is contained in the containing groove when the landing gear is in the first state.

[0024] The technical solution provided by the embodiment of the present disclosure can include the following beneficial effects: The present disclosure provides a landing gear, which is unfolded to support the fuselage when the unmanned aerial vehicle lands, and can be folded to avoid blocking the first camera. In addition, since the vertical distance from the free end of the landing gear to the bottom of the fuselage is greater than the maximum distance by which the first camera protrudes from the bottom of the fuselage, the first camera will not be in contact with the structure at the landing site when the landing gear is unfolded and supported, thereby avoiding the first camera from being scratched and worn when the unmanned aerial vehicle lands.

[0025] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0027] Figure 1 is a front view of an unmanned aerial vehicle in a first state according to an exemplary embodiment.

[0028] Figure 2 is a front view of an unmanned aerial vehicle in a second state according to an exemplary embodiment.

[0029] Figure 3 is a perspective view of an unmanned aerial vehicle in a second state according to an exemplary embodiment.

[0030] Figure 4 is an exploded view of a driving mechanism and a transmission mechanism according to an exemplary embodiment.

[0031] Figure 5 is a schematic view of a transmission mechanism in a first state according to an exemplary embodiment.

[0032] Figure 6 is a schematic view of a transmission mechanism between a first state and a second state according to an exemplary embodiment.

[0033] Figure 7 is a schematic view of a transmission mechanism in a second state according to an exemplary embodiment.

[0034] Figure 8 is a schematic view of the bottom of an unmanned aerial vehicle in a first state according to an exemplary embodiment.

[0035] Figure 9is a schematic view of the bottom of the UAV in the second state according to an example embodiment. DETAILED DESCRIPTION

[0036] The example embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless indicated otherwise. The example embodiments described herein represent non-exclusive ways of implementing the present disclosure. Rather, they are examples of apparatuses and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

[0037] Currently, the UAVs are widely used in aerial photography, surveying and mapping, etc. When the UAVs are used for panoramic shooting, a lens needs to be carried to realize the shooting function. However, when the UAV lands, the camera arranged at the bottom of the fuselage of the UAV usually protrudes from the bottom of the fuselage, and the camera is prone to collide with the landing support plane such as the ground or the table or other obstacles, resulting in wear of the camera, decline of the shooting quality, and even damage and scrapping of the camera, which greatly shortens the service life of the camera and increases the use and maintenance costs.

[0038] To solve the above technical problems, the present disclosure provides a landing gear which supports the fuselage when the UAV lands, and the landing gear can be retracted to avoid blocking the first camera. At the same time, since the vertical distance from the free end of the landing gear to the bottom of the fuselage is greater than the maximum distance by which the first camera protrudes from the bottom of the fuselage, the first camera will not contact the structure at the landing place when the landing gear is expanded and supported, thereby avoiding the collision and wear of the first camera when the UAV lands.

[0039] According to an example embodiment, as shown in Figures 1-3 The present disclosure provides a UAV, which includes a fuselage 10 and at least one first camera 11 protrudingly arranged at the bottom of the fuselage 10. The first camera 11 is used to shoot the scenery below the UAV. The UAV can further include at least one second camera 12 arranged at the top of the fuselage 10 and used to shoot the scenery above the UAV. The first camera 11 and the second camera 12 can be wide-angle cameras, so that the field of view angles of the first camera 11 and the second camera 12 intersect, that is, panoramic coverage can be achieved by arranging the first camera 11 and the second camera 12.

[0040] The drone also includes landing gear 20, which is rotatably connected to the fuselage 10 to switch between a first state and a second state. In the first state, the landing gear 20 is retracted to the bottom of the fuselage 10; in the second state, the landing gear 20 is deployed to support the fuselage 10. For example, when the drone lands, the landing gear 20 transitions from the first state to the second state, deploying to support the fuselage 10 during landing; when the drone takes off, the landing gear 20 transitions from the second state to the first state, retracting to prevent it from obstructing the first camera 11 and affecting its recording capabilities.

[0041] Among them, such as Figure 2 As shown, when the landing gear 20 is deployed, the vertical distance from the free end of the landing gear 20 to the bottom of the fuselage 10 is D1, and the maximum distance from which the first camera 11 protrudes from the bottom of the fuselage 10 is D2. D1 is greater than D2, thus allowing the first camera 11 to remain suspended in the air, preventing impact damage to the first camera 11 during drone landing. Figure 2 Taking the orientation shown as an example, the free end of the landing gear 20 is also... Figure 2 As shown at the bottom, when the drone lands, the support height of the landing gear 20 is the vertical distance from the bottom of the landing gear 20 to the bottom of the fuselage 10.

[0042] In this embodiment, a landing gear is provided to deploy and support the fuselage when the drone lands. When the landing gear is not needed, it can be retracted to avoid obstructing the first camera. At the same time, since the vertical distance from the free end of the landing gear to the bottom of the fuselage is greater than the maximum distance from which the first camera protrudes from the bottom of the fuselage, the first camera is suspended in the air when the landing gear is deployed, thereby preventing the first camera from being bumped or worn when the drone lands.

[0043] In some embodiments, the drone is equipped with multiple landing gears 20. The multiple landing gears 20 are arranged around the first camera 11 to increase the support points of the drone's fuselage 10 and improve the stability of the drone during landing. In a second state, the free ends of the landing gears 20 extend outside the fuselage 10. Figure 2 Taking the orientation shown as an example, the free end of the landing gear 20 is also... Figure 2The free end of the landing gear 20 extends to the outside of the fuselage 10 to increase the supporting size, so that the supporting effect of the landing gear 20 on the fuselage 10 is more stable. When the number of the landing gear 20 is two, a better supporting effect can be achieved, and the production cost is not excessively increased. Of course, it can be understood that the number of the landing gear 20 can be increased by the person skilled in the art in order to improve the supporting effect, for example, the number of the landing gear 20 is set to three, four, etc. The number of the landing gear 20 is not excessively limited in the embodiment of the disclosure, and can be selected by the person skilled in the art according to actual needs.

[0044] In some embodiments, the unmanned aerial vehicle is provided with two landing gears 20, and further comprises a driving mechanism and a transmission mechanism 40. The driving mechanism is connected with the two landing gears 20 respectively through the transmission mechanism 40, so as to drive the two landing gears 20 to be unfolded or folded at the same time.

[0045] In some embodiments, the driving mechanism comprises a motor assembly 30. As shown in Figure 4 The motor assembly 30 comprises a motor 31 and a reduction box 32. The motor 31 and the reduction box 32 constitute a reduction motor. The reduction box 32 is used to reduce the rotating speed of the motor 31 and increase the torque, so as to provide sufficient driving power for the transmission mechanism 40. The motor 31 comprises one or a combination of hollow cup motor, stepping motor, brush motor and brushless motor. The reduction box 32 comprises planetary reduction box and / or tower reduction box. In one example, the motor 31 comprises hollow cup motor, and the reduction box 32 comprises planetary reduction box. In another example, the motor 31 comprises stepping motor, and the reduction box 32 comprises planetary reduction box and tower reduction box. In yet another example, the motor 31 comprises hollow cup motor and stepping motor, and the reduction box 32 comprises tower reduction box. In still another example, the motor 31 comprises brush motor and brushless motor, and the reduction box 32 comprises planetary reduction box and tower reduction box. It can be understood that the specific setting mode of the motor 31 and the reduction box 32 is not excessively limited in the embodiment of the disclosure, and can be selected by the person skilled in the art according to actual needs.

[0046] In some embodiments, the transmission mechanism 40 comprises a first transmission assembly 41 and a second transmission assembly 42. As shown in Figure 4As shown, the first transmission assembly 41 is connected with one of the two landing gears 20, the second transmission assembly 42 is connected with the other of the two landing gears 20, the first transmission assembly 41 is further connected with the output end of the motor assembly 30, and the first transmission assembly 41 and the second transmission assembly 42 are engaged in transmission, for example, the first transmission assembly 41 and the second transmission assembly 42 can be engaged in transmission through gears. When the output end of the motor assembly 30 rotates, the first transmission assembly 41 is driven to rotate, the first transmission assembly 41 and the second transmission assembly 42 are engaged in transmission, and the second transmission assembly 42 is further driven to rotate, so that the first transmission assembly 41 and the second transmission assembly 42 are driven to move synchronously by controlling the motor assembly 30.

[0047] In some embodiments, the first transmission assembly 41 and the second transmission assembly 42 each include a swing arm 401. As shown, Figure 4 The swing arm 401 includes a first swing arm 411 of the first transmission assembly 41 and a second swing arm 421 of the second transmission assembly 42, wherein a first end of the swing arm 401 is close to the motor assembly 30, and a second end of the swing arm 401 is close to the landing gear 20.

[0048] In one example, as shown, Figure 4 The first end of the first swing arm 411 of the first transmission assembly 41 is fixedly connected with the output end of the motor assembly 30, and the first end of the second swing arm 421 of the second transmission assembly 42 is engaged with the first end of the first swing arm 411 of the first transmission assembly 41. When the output end of the motor assembly 30 rotates, the first end of the first swing arm 411 of the first transmission assembly 41 is driven to rotate in a first direction, and since the first end of the second swing arm 421 of the second transmission assembly 42 is engaged with the first end of the first swing arm 411 of the first transmission assembly 41, when the first end of the first swing arm 411 of the first transmission assembly 41 rotates in the first direction, the second end of the second swing arm 421 of the second transmission assembly 42 rotates in a second direction, and the first direction and the second direction are opposite. For example, when the first direction is a clockwise direction, the second direction is a counterclockwise direction; when the first direction is a counterclockwise direction, the second direction is a clockwise direction.

[0049] In some embodiments, the unmanned aerial vehicle further includes a mounting box 50. The first end of the swing arm 401 is mounted in the mounting box 50, that is, as shown, Figures 4-7As shown, the first end of the first swing arm 411 of the first transmission assembly 41 and the first end of the second swing arm 421 of the second transmission assembly 42 are both mounted in the mounting box 50. A rotating shaft 51 is also arranged in the mounting box 50, the rotating shaft 51 is fixed to the mounting box 50, and the fixing mode of the rotating shaft 51 to the mounting box 50 can be interference fit. The first end of the second swing arm 421 of the second transmission assembly 42 is sleeved on the rotating shaft 51 and can rotate around the rotating shaft 51. The rotating shaft 51 is used to rotationally connect the first end of the second swing arm 421 of the second transmission assembly 42, and limit the position of the first end of the second swing arm 421, so as to ensure that the second swing arm 421 can engage with the first swing arm 411.

[0050] In one example, the mounting box 50 includes an upper cover 501 and a lower cover 502. As shown, Figures 4-7 The upper cover 501 and the lower cover 502 are fastened and connected to form the mounting box 50. The motor assembly 30 is arranged on the side of the upper cover 501 away from the lower cover 502, and the end of the output end of the motor assembly 30 is sleeved with a bearing 53, the bearing 53 is fixed on the side of the lower cover 502 close to the upper cover 501, and the bearing 53 can be an oil-containing bearing, a copper sleeve, a plastic sleeve with self-lubricating property, etc. The inside of the mounting box 50 can also store lubricating grease or damping grease to play a lubricating role on the first end of the first swing arm 411 of the first transmission assembly 41 and the first end of the second swing arm 421 of the second transmission assembly 42, improve the stability of transmission, and reduce the wear between the first swing arm 411 and the second swing arm 421.

[0051] In some embodiments, the output end of the motor assembly 30 is also provided with a position detection device 52. As shown, Figures 4-7 The position detection device 52 is mounted in the mounting box 50, and the position detection device 52 is electrically connected with the controller (not shown in the figure) of the unmanned aerial vehicle, for detecting the rotation angle of the output end of the motor assembly 30, and indirectly obtaining the rotation position of the landing gear 20. When the rotation angle of the output end of the corresponding motor assembly 30 is detected when the landing gear 20 is opened or closed, the motor assembly 30 can be powered off or kept rotating according to the subsequent operation required for the landing gear 20, so as to realize the feedback control of the rotation of the landing gear 20. The position detection device 52 includes one or a combination of several of a position switch, a travel switch, a potentiometer, an encoder, an optical grating, a microswitch, and a non-contact photoelectric switch, and the specific type selection of the position detection device 52 is not limited too much in the embodiments of the present disclosure, and the person skilled in the art can select according to the actual needs.

[0052] In some embodiments, the first transmission assembly 41 and the second transmission assembly 42 both include a connecting rod 402, and the connecting rod 402 is connected to the second end of the swing arm 401 and the landing gear 20, respectively. As shown, Figure 4As shown, the connecting rod 402 includes a rod body 4021 and two support rods 4022 connected to the rod body 4021. The rod body 4021 and the two support rods 4022 are Y-shaped. The rod body 4021 is rotatably connected to the landing gear 20, and the second end of the swing arm 401 is rotatably connected between the two support rods 4022. The support rods 4022 and the second end of the swing arm 401, as well as the rod body 4021 and the landing gear 20, can be rotatably connected via pin shafts 403. Through the coordinated transmission of the swing arm 401 and the connecting rod 402, small-angle driving and large-angle execution can be achieved. That is, when the motor assembly 30 drives the swing arm 401 to rotate at an acute angle, the connecting rod 402 can drive the landing gear 20 to rotate at an obtuse angle, or even make the angle of rotation of the landing gear 20 driven by the connecting rod 402 a multiple of the angle of rotation of the swing arm 401 driven by the motor assembly 30. Meanwhile, since the swing arm 401 and the connecting rod 402 are provided, and the swing arm 401 and the connecting rod 402 can rotate relative to each other, the swing arm 401 and the connecting rod 402 can be folded and stored when stored, occupying less storage space and having a high degree of integration and space utilization.

[0053] like Figures 4-7 As shown, the transmission mechanism 40 in the first state is as follows: Figure 5 As shown, the landing gear 20 is retracted at this time. When the output end of the motor assembly 30 rotates counterclockwise, it drives the first swing arm 411 to rotate counterclockwise, and simultaneously drives the second swing arm 421, which meshes with the first swing arm 411, to rotate clockwise. The first swing arm 411 drives the first connecting rod 412 to rotate clockwise, and the second swing arm 421 drives the second connecting rod 422 to rotate counterclockwise, that is, as shown... Figure 6 As shown. When the output shaft of the motor assembly 30 continues to rotate, the transmission mechanism 40 rotates to the position shown. Figure 7 In the second state shown, the landing gear 20 is deployed to support the drone.

[0054] In some embodiments, when the landing gear 20 is in the second state, there is a preset angle between the swing arm 401 and the connecting rod 402, the preset angle being in the range of 5° to 15°. Figure 7 As shown, when the landing gear 20 is in the second state, the connecting rod 402 abuts against the landing gear 20, creating a preset angle between the swing arm 401 and the connecting rod 402. This prevents the swing arm 401 and the connecting rod 402 from being aligned in a straight line, thus avoiding self-locking and preventing erratic movement of the mechanism due to self-locking. Simultaneously, because the preset angle between the swing arm 401 and the connecting rod 402 prevents self-locking, the landing gear 20 can be manually opened or closed even in cases of power failure or control malfunction of the motor assembly 30, increasing the fault tolerance of the UAV landing gear 20 control.

[0055] In some embodiments, the drone includes a base 13. For example... Figures 8-9As shown, the first camera 11 and the mounting box 50 are arranged on the bottom shell 13, and the mounting box 50 is arranged side by side with the first camera 11. The landing legs 20 are rotationally connected with the bottom shell 13, and two landing legs 20 are symmetrically arranged on both sides of the first camera 11. The bottom shell 13 is provided with a receiving groove 131, and the landing legs 20 are accommodated in the receiving groove 131 when the landing legs 20 are in the first state. The landing legs 20 and the bottom shell 13 can be rotationally connected through a pin shaft 403.

[0056] In some embodiments, the shape of the landing leg 20 can have various arrangements.

[0057] In one example, the free end of the landing leg 20 can be provided with a hand grip 21, which is arranged to protrude from the surface of the landing leg 20 or is recessed inwardly from the surface of the landing leg 20, and the hand grip 21 is used for manually opening or closing the landing leg 20. The position corresponding to the hand grip 21 of the receiving groove 131 can be provided with an avoiding area 1311 to facilitate the user to hold the hand grip 21 and operate the opening or closing of the landing leg 20.

[0058] In another example, the landing leg 20 can be provided with a reinforcing rib for increasing the structural strength of the landing leg 20. The reinforcing rib can be arranged on both the inner and outer sides of the landing leg 20, or only on the inner side of the landing leg 20 for aesthetic consideration, that is, on the bottom side in the second state.

[0059] In yet another example, the shape of the landing leg 20 can be arranged as an arch shape, and the two ends of the arch shape are in contact with the ground or the table top when the UAV lands, that is, each landing leg 20 can have two supporting surfaces, and by arranging two landing legs 20, four supporting surfaces are obtained, which increases the support point of the landing leg 20 to the fuselage 10, thereby improving the support stability.

[0060] In some embodiments, the first camera 11 includes a fisheye camera to have a larger field of view angle and expand the shooting range. For example, the field of view angle of the fisheye camera is greater than 190°.

[0061] In some embodiments, the UAV further includes a propeller 60. The propeller 60 is used to drive the UAV to take off, such as Figures 1-3As shown, the propeller 60 includes an arm 61, a propeller motor 62 and a blade 63, one end of the arm 61 is fixedly connected with the body 10, the other end of the arm 61 is provided with the rotatable blade 63 and the propeller motor 62 for driving the blade 63 to rotate, and the blade 63 rotation provides the unmanned aerial vehicle with the lift. In the embodiment of the present disclosure, the number of the propeller 60 is four, and two blades 63 are arranged on the arm 61 of each propeller 60. It can be understood that the number of the propeller 60 and the number of the blade 63 can be selected by those skilled in the art according to actual needs, and the embodiment of the present disclosure does not make too many limitations on this.

[0062] In some embodiments, as Figures 1-4 As shown, the body 10 is further provided with a battery 14. The battery 14 is electrically connected with the motor assembly 30, the propeller motor 62 and the controller of the unmanned aerial vehicle, and is used for supplying power to each part of the unmanned aerial vehicle.

[0063] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure following, in general, the principles of the present disclosure and including such

[0064] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A drone, characterized in that, include: body; At least one first camera is protruding from the bottom of the body; The landing gear is rotatably connected to the fuselage so that the landing gear can switch between a first state and a second state; The landing gear is in a first state, and the landing gear is retracted to the bottom of the fuselage; The landing gear is in a second state, and the landing gear is deployed to support the fuselage; When the landing gear is deployed, the vertical distance from the free end of the landing gear to the bottom of the fuselage is greater than the maximum distance by which the first camera protrudes from the bottom of the fuselage.

2. The UAV according to claim 1, characterized in that, The drone is equipped with multiple landing gears, which are arranged around the first camera; The landing gears are in the second state, with the free ends of the landing gears extending outside the fuselage.

3. The UAV according to claim 2, characterized in that, The drone is equipped with two landing gears. The drone also includes a drive mechanism and a transmission mechanism. The drive mechanism is connected to the two landing gears respectively through the transmission mechanism to drive the two landing gears to deploy or retract simultaneously.

4. The UAV according to claim 3, characterized in that, The drive mechanism includes a motor assembly, and the transmission mechanism includes a first transmission assembly and a second transmission assembly. The first transmission assembly is connected to one of the two landing gears, and the second transmission assembly is connected to the other landing gear. The first transmission component is also connected to the output end of the motor component, and the first transmission component meshes with the second transmission component for transmission.

5. The UAV according to claim 4, characterized in that, Both the first transmission assembly and the second transmission assembly include a swing arm. The first end of the swing arm of the first transmission assembly is fixedly connected to the output end of the motor assembly, and the first end of the swing arm of the second transmission assembly meshes with the first end of the swing arm of the first transmission assembly. The motor assembly drives the first end of the swing arm of the first transmission assembly to rotate in a first direction, and the second end of the swing arm of the second transmission assembly to rotate in a second direction, wherein the first direction and the second direction are opposite.

6. The UAV according to claim 5, characterized in that, The drone also includes a mounting box, and the first end of the swing arm is mounted in the mounting box; The mounting box contains a rotating shaft, and the first end of the swing arm of the second transmission component is sleeved on the rotating shaft and can rotate around the rotating shaft.

7. The UAV according to claim 6, characterized in that, The output end of the motor assembly is also provided with a position detection device, which is installed in the mounting box and electrically connected to the controller of the UAV.

8. The UAV according to claim 6, characterized in that, Both the first transmission assembly and the second transmission assembly include a connecting rod, which connects the second end of the swing arm and the landing gear, respectively. The connecting rod is Y-shaped and includes a rod body and two support rods respectively connected to the rod body. The rod body is rotatably connected to the landing gear, and the second end of the swing arm is rotatably connected between the two support rods.

9. The UAV according to claim 8, characterized in that, When the landing gear is in the second state, there is a preset angle between the swing arm and the connecting rod, and the preset angle is in the range of 5° to 15°.

10. The UAV according to claim 1, characterized in that, The drone includes a bottom shell, and the landing gear is rotatably connected to the bottom shell. The two landing gears are symmetrically arranged on both sides of the first camera. The bottom shell is provided with a receiving groove, and when the landing gear is in the first state, the landing gear is received in the receiving groove.

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