CN216546712U - Plant protection unmanned aerial vehicle - Google Patents

Abstract

The application discloses plant protection unmanned aerial vehicle includes: a frame including a horn; the first motor is arranged on the machine arm; the spraying part is mechanically coupled with the rotor of the first motor and can be driven to work through the rotor of the first motor so as to enable the spraying part to spray liquid; a reducer mechanically coupled to the rotor of the first motor, the reducer configured to be capable of outputting a first rotational speed at the output shaft, the first rotational speed being lower than a rotational speed of the rotor of the first motor; and first paddle, with the output shaft mechanical coupling of reduction gear, the rotor of first motor can drive first paddle rotatory through the output shaft of reduction gear to make first paddle provide plant protection unmanned aerial vehicle's flight power, this unmanned aerial vehicle only disposes a first motor and can drive simultaneously and spray part and first paddle work, need not to dispose the motor alone for spraying the part again, consequently, the cost is reduced, and makes the wire of motor connect more succinctly.

Description

Plant protection unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a plant protection unmanned aerial vehicle.

Background

Plant protection unmanned aerial vehicle has been widely used in agriculture and forestry, utilizes unmanned aerial vehicle to spray insecticide, not only can use manpower and materials sparingly, can also remote control operation, avoids spraying the operation personnel and exposes in the insecticide, has improved the security of operation greatly, has showing and has improved the insecticide and has sprayed efficiency.

Common plant protection unmanned aerial vehicle applications typically have two atomization schemes: the atomizing device comprises a pressure nozzle and a centrifugal nozzle, wherein the pressure nozzle only needs one nozzle connected with a water pipe for atomizing; in addition to the water pipe connection, the centrifugal nozzle also needs to be internally provided with a motor for centrifugal atomization and an electric circuit for connecting the motor, so that the cost of the centrifugal nozzle is higher, and the wire connection is more complicated.

SUMMERY OF THE UTILITY MODEL

The present application has been made to solve at least one of the above problems. Specifically, this application provides a plant protection unmanned aerial vehicle in one aspect, includes:

a frame comprising a horn;

the first motor is arranged on the machine arm;

the spraying component is mechanically coupled with the rotor of the first motor, and the rotor of the first motor can drive the spraying component to work so as to enable the spraying component to spray liquid;

a speed reducer mechanically coupled to a rotor of the first electric machine, the speed reducer configured to be capable of outputting a first rotational speed at an output shaft, the first rotational speed being lower than a rotational speed of the rotor of the first electric machine; and

first paddle, with the output shaft mechanical coupling of reduction gear, the rotor of first motor passes through the output shaft of reduction gear can drive first paddle is rotatory, so that first paddle provides plant protection unmanned aerial vehicle's flight power.

Optionally, the decelerator is located below the first motor, the first paddle is located below the decelerator, and the spray member is located below the first paddle.

Optionally, a second paddle coaxial with the first paddle is further included, the second paddle being located above the first motor.

Optionally, a second motor is further disposed on the horn, the second paddle is mechanically coupled to a rotor of the second motor, and the rotor of the first motor can drive the second paddle to rotate.

Optionally, the second paddle is located above the horn, and the first paddle and the spray member are located below the horn.

Optionally, the first motor further includes a rotating shaft, the rotating shaft is mechanically coupled to the rotor, the rotating shaft penetrates through the output shaft of the speed reducer, and is located between an outer side wall of the rotating shaft in the output shaft and an inner side wall of the output shaft, and the spraying part is mechanically coupled to the rotor of the first motor through an output end of the rotating shaft.

Optionally, the speed reducer is located above the first motor, the first paddle is located above the speed reducer, and the spray member is located below the first motor.

Optionally, the first paddle is located above the horn and the spray member is located below the horn.

Optionally, the first motor further comprises a rotating shaft, a part of the rotating shaft is located in the rotor, and the spraying part is mechanically coupled with the rotor of the first motor through an output end of the rotating shaft.

Optionally, the pivot is the inside hollow rotating shaft that has hollow structure, plant protection unmanned aerial vehicle still includes reservoir and feed liquor pipe, the inlet of feed liquor pipe with the inside intercommunication of reservoir, the liquid outlet of feed liquor pipe with hollow rotating shaft hollow structure intercommunication, liquid in the reservoir via the feed liquor pipe hollow structure of hollow rotating shaft carry extremely spray the part.

Optionally, plant protection unmanned aerial vehicle still includes reservoir and feed liquor pipe, the inlet of feed liquor pipe with the inside intercommunication of reservoir, the liquid outlet intercommunication of feed liquor pipe spray the part.

Optionally, the liquid outlet of the liquid inlet pipe is located above the spraying part, and a gap is formed between the liquid outlet of the liquid inlet pipe and the spraying part.

Optionally, the first motor is an inner rotor motor, the inner rotor motor further comprising a stator, the rotor being disposed within the stator, or,

the second motor is an outer rotor motor, the outer rotor motor further comprises a stator, and the rotor is arranged outside the stator.

Optionally, the speed reducer is a planetary gear speed reducer, the planetary gear speed reducer is coaxially disposed with the rotor, and an input end of the planetary gear speed reducer is mechanically coupled with the rotor of the first motor.

Optionally, the first motor includes a rotating shaft, the rotating shaft is mechanically coupled to the rotor, and an output end of the rotating shaft is in transmission connection with an input end of the planetary gear reducer.

Optionally, the part of the rotating shaft for connecting with the input end of the planetary gear reducer is provided with external teeth, and the output end of the rotating shaft is in meshed connection with the input end of the planetary gear reducer through the external teeth.

Optionally, the spraying part includes a centrifugal throwing disk, and the rotor of the first motor drives the centrifugal throwing disk to rotate so as to throw out the liquid in the centrifugal throwing disk.

Optionally, the rotating shaft of the first blade, the rotating shaft of the first motor, and the rotating shaft of the centrifugal flail disk are coaxially arranged.

The utility model provides a plant protection unmanned aerial vehicle includes first motor, spray parts, reduction gear and first paddle, spray parts and the rotor machinery coupling of first motor, and the rotor machinery coupling of reduction gear and first motor, the output shaft machinery coupling of first paddle and reduction gear, thereby realize only disposing a first motor and can drive simultaneously and spray parts and the work of first paddle, need not to dispose the motor alone for spraying parts again, therefore, the cost is reduced, and make the wire of motor connect more succinctly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 shows a schematic view of a plant protection drone in one embodiment of the present application;

fig. 2 shows a connection diagram of power and water paths of a plant protection drone in one embodiment of the present application;

fig. 3 shows a partial schematic view of a plant protection drone in one embodiment of the present application;

fig. 4 shows a partial schematic view of a plant protection drone in another embodiment of the present application;

fig. 5 shows a partial schematic view of a plant protection drone in another embodiment of the present application;

fig. 6 shows a partial schematic view of a plant protection drone in another embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, exemplary embodiments according to the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. It will be apparent, however, to one skilled in the art, that the present application may be practiced without one or more of these specific details. In other instances, well-known features of the art have not been described in order to avoid obscuring the present application.

It is to be understood that the present application is capable of implementation in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

In order to provide a thorough understanding of the present application, a detailed structure will be presented in the following description in order to explain the technical solutions presented in the present application. Alternative embodiments of the present application are described in detail below, however, the present application may have other implementations in addition to these detailed descriptions.

Common plant protection unmanned aerial vehicle applications typically have two atomization schemes: the atomizing device comprises a pressure nozzle and a centrifugal nozzle, wherein the pressure nozzle only needs one nozzle connected with a water pipe for atomizing; in addition to the water pipe connection, the centrifugal nozzle also needs to be internally provided with a motor for centrifugal atomization and an electric circuit for connecting the motor, so that the cost of the centrifugal nozzle is higher, and the wire connection is more complicated.

In the existing scheme that the centrifugal flail disk and a propeller (the propeller comprises blades) are driven by the same power source, an accelerator is adopted, and the accelerator increases the rotating speed of a power motor to drive the centrifugal flail disk to rotate. However, this solution has the following drawbacks: 1. the output shaft has high rotating speed and needs high-precision matching and assembling; 2. the speed increaser is only suitable for the condition that the propeller is positioned above the machine arm, but is difficult to be applied to the condition that the propeller is installed below the machine arm, because the propeller rotates, the speed increaser is difficult to design and install and fix.

In view of the existence of above-mentioned problem, this application proposes a plant protection unmanned aerial vehicle, includes: a frame comprising a horn; the first motor is arranged on the machine arm; the spraying part is mechanically coupled with the rotor of the first motor, and the rotor of the first motor can drive the spraying part to work so as to enable the spraying part to spray liquid; a speed reducer mechanically coupled to a rotor of the first motor, the speed reducer configured to be capable of outputting a first rotational speed at an output shaft, the first rotational speed being lower than a rotational speed of the spray member; and the first paddle is mechanically coupled with the output shaft of the speed reducer, and the rotor of the first motor can drive the first paddle to rotate through the output shaft of the speed reducer, so that the first paddle provides the flight power of the plant protection unmanned aerial vehicle.

The utility model provides a plant protection unmanned aerial vehicle only disposes a first motor and can drives simultaneously and spray part and first paddle work, need not to dispose the motor alone for spraying the part again, consequently, the cost is reduced, and makes the wire connection of motor more succinct.

The plant protection unmanned aerial vehicle of this application is explained in detail below with the accompanying drawing. The features of the following examples and embodiments may be combined with each other without conflict.

In one example, fig. 1 shows a schematic diagram of a plant protection drone in one embodiment of the present application.

The plant protection drone includes a frame 102 and a load 104. In some embodiments, the load 104 may be located directly on the plant protection drone, without the need for a carrier. The plant protection drone may include a processor 101, a memory 102, a power mechanism 106, a sensing system 108, and a communication system 110. These components are interconnected by a bus system and/or other form of connection mechanism (not shown).

In this application example, the frame still includes the horn that outwards extends from the central body of frame, and the horn can be used for carrying on power unit 106 for plant protection unmanned aerial vehicle provides the power of flight, and the quantity of horn is a plurality of, fixed connection or movably be connected between the central body of a plurality of horns and frame. The power mechanism 106 may include one or more rotors, propellers (with blades), engines, motors, wheels, bearings, magnets, nozzles, etc., e.g., the rotors of the power mechanism may be self-fastening rotors, rotor assemblies, or other rotor power units. Plant protection unmanned aerial vehicle can have one or more power unit. All power mechanisms may be of the same type. Alternatively, one or more of the power mechanisms may be of a different type. The power mechanism 106 may be mounted on the aircraft by any suitable means, such as by a support member (e.g., a drive shaft). The power mechanism 106 may be mounted at any suitable location on the plant protection drone 100, such as the top, bottom, front, back, sides, or any combination thereof.

In some embodiments, the power mechanism 106 enables the aerial vehicle to take off vertically from the surface, or land vertically on the surface, without requiring any horizontal movement of the plant protection drone (e.g., without requiring taxiing on a runway). Optionally, the power mechanism 106 may allow the plant protection drone to preset positions and/or yaw in the air. One or more of the power mechanisms 106 may be controlled independently of the other power mechanisms.

As shown in fig. 3, in one example, the power mechanism of the present application includes a first motor 302, the first motor 302 being mounted on a horn (not shown), the first motor 302 being used to provide rotational power to the paddle and the spray member 307. The first motor 302 may be detachably mounted on the arm in any suitable manner, for example, the arm is provided with a motor fixing position 303, and the first motor 302 is correspondingly mounted on the motor fixing position 303.

The electric machine 302 includes a rotor 3022 and a stator 3021, the stator 3021 being a stationary part of the electric machine, and the stator 3021 being provided with pairs of dc-excited stationary main poles, such as iron cores, the rotor 3022 also being called armature cores, and the rotor 3022 being provided with armature windings. Alternatively, as shown in fig. 3, the rotor 3022 of the inner rotor motor is located within the stator 3021. The rotor 3022 of the outer rotor motor is located outside the stator 3021. In as shown in fig. 3 and as the example that fig. 4 shows, first motor 302 is the inner rotor motor, compares outer rotor motor inner rotor motor and has higher power density, and under the same output, the volume of inner rotor motor can be less than outer rotor motor's size, consequently, uses the inner rotor motor to be applied to plant protection unmanned aerial vehicle, can reduce the motor and take up the space on unmanned aerial vehicle's horn, is favorable to unmanned aerial vehicle's miniaturization. The present invention can also be implemented in the case where the first motor 302 is an outer rotor motor regardless of the volume, and in the example shown in fig. 5, the first motor 302 is an outer rotor motor.

The first electrode 302 further includes a rotating shaft mechanically coupled to the rotor 3022, which may be a hollow rotating shaft 3023 having a hollow structure inside or may be a solid rotating shaft.

It is worth mentioning that the first motor 302 of the present application is a brushless motor, or may also be a brush motor, etc.

Illustratively, the plant protection drone also includes landing gears (not shown) mounted on the frame 102. The frame 102 may serve as a mounting carrier for a flight control system, processor, video camera, etc. of the plant protection drone. Landing gear is mounted below the frame 102, and sensors, such as microwave rotary radar, may be mounted on the landing gear. The landing gear 303 may be used to provide support for the plant protection drone when it lands, in one example the landing gear may also carry a liquid reservoir (i.e. a liquid reservoir container such as a water tank or the like) and be used to spray liquid through a spray member 307 such as a centrifugal flail or the like to spray pesticide, fertilizer, irrigation or the like to the plant, or in other examples the central body of the airframe may carry a liquid reservoir.

In one example, the plant protection drone of the present application further includes a spraying part 307, and the spraying part 307 may include a centrifugal flail or other desired type of spraying part 307 that requires the first motor 302 to be powered. The spraying part 307 is mechanically coupled to the rotor 3022 of the first motor 302, and the rotor 3022 of the first motor 302 can drive the spraying part 307 to work, such as rotating the spraying part 307, so that the spraying part 307 sprays liquid, which may be pesticide, fertilizer, irrigation water, or the like. Alternatively, the spraying part 307 comprises a centrifugal flail, and the rotor 3022 of the first motor 302 rotates the centrifugal flail to throw the liquid out of the centrifugal flail, for example, the rotor 3022 of the first motor 302 may rotate the spraying part 307 at a rotation speed greater than a threshold rotation speed, so that the liquid flowing from the reservoir to the spraying part 307 is thrown out and atomized by the spraying part 307, such as the centrifugal flail, under high-speed rotation, wherein the threshold rotation speed is any rotation speed capable of centrifugally atomizing the liquid. For example, the rotor 3022 of the first motor 302 may rotate the spraying part 307, and the rotation speed of the spraying part 307 may be greater than 10000rpm, for example, the rotation speed of the spraying part 307 may be 10000rpm, 12000rpm, 13000rpm, 14000rpm, 15000rpm, 16000rpm, 17000rpm, 18000rpm, or the like.

The spray member 307 may be mechanically coupled to the rotor 3022 of the first motor 302 in any suitable manner, for example, the first motor 302 may further include a rotating shaft mechanically coupled to the rotor 3022 and partially disposed within the rotor 3022, the spray member 307 may be mechanically coupled to the rotor 3022 of the first motor 302 by connecting an output end of the rotating shaft, and the spray member 307 may be connected to the output end of the rotating shaft in any suitable manner, such as welding, screwing, and the like.

Further, with continued reference to fig. 3, the plant protection drone of the present application further comprises a reducer 304, the reducer 304 being mechanically coupled to the rotor 3022 of the first electric machine 302, the reducer 304 being configured to be able to output a first rotation speed at its output shaft, the first rotation speed being lower than the rotation speed of the rotor 3022 of the first electric machine 302; the plant protection unmanned aerial vehicle further comprises a first blade 305, the first blade 305 is mechanically coupled with the output shaft 3041 of the reducer 304, and the rotor 3022 of the first motor 302 can drive the first blade 305 to rotate through the output shaft 3041 of the reducer 304, so that the first blade 305 provides the flight power of the plant protection unmanned aerial vehicle. Because the blade rotation speed needs to be lower than the rotation speed of the spraying part 307, the plant protection unmanned aerial vehicle that this application passes through is through disposing reduction gear 304 in order to reduce the rotational speed that the rotor 3022 of first motor 302 exported to the blade to take first blade 305 to rotate.

Alternatively, the first rotation speed may be any rotation speed capable of flying the drone, for example the first rotation speed may be between 1400rpm and 3000rpm, such as 1400rpm, 1500rpm, 1600rpm, 1700rpm, 2000rpm, 2500rpm, or 3000rpm, or other suitable rotation speed.

The first paddle 305 may be mechanically coupled to the output shaft 3041 of the reducer 304 in any suitable manner, for example, the first paddle 305 may be clamped and fixed to the output shaft 3041 of the reducer 304 by a paddle clamp 306, or may be fixed in other manners, such as screwing, welding, and the like, and is not limited in this respect.

The reducer 304 may be any suitable reducer 304 known to those skilled in the art, such as a planetary gear reducer, a cylindrical gear reducer, or a worm reducer.

Alternatively, the reducer 304 may be disposed coaxially with the rotor 3022 of the first electric machine 302, with the input of the reducer 304 mechanically coupled to the rotor 3022 of the first electric machine 302. Alternatively, the rotational axis of the first blade 305, the rotational axis of the first motor 302, and the rotational axis of the centrifugal thrower are coaxially arranged.

The input of the reducer 304 is mechanically coupled to the rotor 3022 of the first electric machine 302, for example, the rotating shaft of the first electric machine 302 is mechanically coupled to the rotor 3022, and the output of the rotating shaft is in driving connection with the input of the reducer 304, which may be a meshing connection or other suitable connection. Taking the reducer 304 as a planetary gear reducer as an example, the part of the rotating shaft for connecting with the input end of the planetary gear reducer is provided with external teeth, and the output end of the rotating shaft is meshed with the input end of the planetary gear reducer through the external teeth.

In the example shown in fig. 3, the rotating shaft of the first motor 302 is mechanically coupled to the rotor 3022, the rotating shaft penetrates through the output shaft 3041 of the reducer 304, and there is a gap between the outer sidewall of the rotating shaft and the inner sidewall of the output shaft inside the output shaft, the spraying part 307 is mechanically coupled to the rotor 3022 of the first motor 302 through the output end of the rotating shaft, and by providing a gap between the outer sidewall of the rotating shaft inside the output shaft and the inner sidewall of the output shaft, the rotation of the rotating shaft of the first motor 302 and the rotation of the output shaft 3041 of the reducer 304 can be prevented from interfering with each other, thereby realizing output of different rotation speeds.

Because the scheme through first motor 302 cooperation reduction gear 304 realizes that first paddle 305 and spraying assembly share same power supply in the scheme of this application, consequently, the scheme application scope of this application is wide, both can be used for the mounting means of normal paddle above, also is applicable to the unmanned aerial vehicle of paddle installation in the below, or coaxial two oar unmanned aerial vehicle.

For example, as shown in fig. 3, in a paddle-down mounted drone, the decelerator 304 is located below the first motor 302, the first paddle 305 is located below the decelerator 304, and the spray member 307 is located below the first paddle 305. For another example, when the plant protection drone is a coaxial twin-bladed drone, the plant protection drone of the present application further includes a second blade (not shown) coaxial with the first blade 305, which is then located above the first motor 302. Illustratively, the second paddle is located above the horn and the first paddle 305 and spray member 307 are located below the horn. Alternatively, the first motor 302 in fig. 3 is an inner rotor motor, and the blades can be placed below the first motor 302 by the inner rotor motor in cooperation with the reducer 304, so that coaxial double-paddle can be realized.

Optionally, still be provided with the second motor on the horn, the rotor mechanical coupling of second paddle and second motor, the rotor through first motor can drive the second paddle rotatory, and first paddle and second paddle all are used for providing flight power for plant protection unmanned aerial vehicle. The first blade 305 and the second blade are controlled by two independent motors, respectively, and therefore, independent control of the rotational speeds of the two blades, etc. can be achieved.

In another example, the paddles are mounted above as shown in fig. 4 and 5, the decelerator 304 is located above the first motor 302, the first paddle 305 is located above the decelerator 304, and the spray part 307 is located below the first motor 302. The first paddle 305 is located above the horn and the spray member 307 is located below the horn.

In order to drain the liquid in the liquid reservoir to the spraying part 307, the plant protection unmanned aerial vehicle of the present application further includes a liquid inlet pipe 301, a liquid inlet of the liquid inlet pipe 301 is communicated with the inside of the liquid reservoir, optionally, a liquid inlet of the liquid inlet pipe 301 is communicated with the liquid reservoir through, for example, a water pump, the liquid in the liquid reservoir is pumped out by the water pump and then enters the liquid inlet pipe 301 through the liquid inlet, a liquid outlet of the liquid inlet pipe 301 is communicated with the spraying part, for example, as shown in fig. 3, a rotating shaft of the first motor 302 is a hollow rotating shaft 3023 having a hollow structure inside, a liquid outlet of the liquid inlet pipe 301 is communicated with the hollow structure of the hollow rotating shaft 3023, as shown in fig. 2, the liquid in the liquid reservoir, for example, water is conveyed to the spraying part 307, for example, a centrifugal flail disk, through the hollow structure of the liquid inlet pipe 301 and the hollow rotating shaft 3023 (i.e., through the first motor 302, for example, an inner rotor brushless motor), consequently, can cool off first motor 302 to improve plant protection unmanned aerial vehicle's load capacity.

In another example, when the cooling effect is not considered, as shown in fig. 5, the liquid outlet of the liquid inlet pipe 301 may also be located above the spraying part 307 and spaced from the spraying part 307, so as to avoid the paddle from rotating to cut the liquid inlet pipe 301 while ensuring that the liquid can be conveyed to the spraying part 307.

In one example, with continued reference to fig. 1, the plant protection drone sensing system 108 of the present application may include one or more sensors to sense the spatial orientation, velocity, and/or acceleration (e.g., rotation and translation with respect to up to three degrees of freedom) of the plant protection drone. The one or more sensors include a GPS sensor, a motion sensor, an inertial sensor, a proximity sensor, or an image sensor. The sensing data provided by the sensing system 108 may be used to track the spatial orientation, velocity, acceleration, and/or the like of the target. Optionally, the sensing system 108 may be used to collect data about the environment of the plant protection drone, such as weather conditions, potential obstacles to approach, location of geographic features, location of man-made structures, image information, and the like.

The communication system 110 is capable of communicating with a control device 112 having a communication system 114 via wireless signals 116. The communication systems 110, 114 may include any number of transmitters, receivers, and/or transceivers for wireless communication. The communication may be a one-way communication such that data may be transmitted from one direction.

In some embodiments, the control device 112 may provide control data to one or more of the plant drone, the carrier 102, and the load 104, and receive information (e.g., position and/or motion information of the aircraft, the carrier, or the load, load sensed data, etc.) from one or more of the plant drone, the carrier 102, and the load 104. In certain embodiments, the control data of the control device may include instructions regarding position, motion, actuation, or control of the aircraft, carrier, and/or load.

Alternatively, the control device may be hand-held or wearable. For example, the control device may include a smartphone, a tablet, a desktop, a computer, glasses, gloves, a helmet, a microphone, or any combination thereof. The control means may comprise a user interface such as a keyboard, mouse, joystick, touch screen or display means. Any suitable user input may interact with the control device, such as manual input commands, voice control, gesture control, or position control (e.g., by controlling movement, position, or tilt of the device).

Referring to fig. 6, the liquid is pumped by a water pump 309 and delivered to the spraying part 307, and is sprayed out through the spraying part 307. The controller 308 is used to control the pump speed of the water pump. In order to effectively control the density of the sprayed liquid of the spraying part 307, the controller 308 adjusts the pump speed of the water pump 309 according to the rotation speed of the motor 302. When the rotation speed of the motor 302 increases, the pump speed of the water pump 309 controlled by the controller 308 also increases. When the rotation speed of the motor 302 decreases, the controller 308 controls the pump speed of the water pump 309 to decrease. For example, in order to ensure that the spraying part 307 sprays more uniformly, when the plant protection unmanned aerial vehicle flies in an accelerated manner, the controller 308 controls the pump speed of the water pump 309 to increase; when the plant protection unmanned aerial vehicle flies in a deceleration mode, the controller 308 controls the pump speed of the water pump 309 to be reduced.

Other components may also be included for a complete plant protection drone and are not described one by one here.

To sum up, the plant protection unmanned aerial vehicle of this application only disposes a first motor and can drive simultaneously and spray part and first paddle work, need not to dispose the motor alone for spraying the part again, consequently, the cost is reduced, and makes the wire connection of motor more succinct.

Those skilled in the art will appreciate that although some embodiments herein include some features included in other embodiments, not others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

Claims (18)

1. The utility model provides a plant protection unmanned aerial vehicle, its characterized in that includes:

a frame comprising a horn;

the first motor is arranged on the machine arm;

the spraying component is mechanically coupled with the rotor of the first motor, and the rotor of the first motor can drive the spraying component to work so as to enable the spraying component to spray liquid;

a speed reducer mechanically coupled to a rotor of the first electric machine, the speed reducer configured to be capable of outputting a first rotational speed at an output shaft, the first rotational speed being lower than a rotational speed of the rotor of the first electric machine; and

first paddle, with the output shaft mechanical coupling of reduction gear, the rotor of first motor passes through the output shaft of reduction gear can drive first paddle is rotatory, so that first paddle provides plant protection unmanned aerial vehicle's flight power.

2. The plant protection unmanned aerial vehicle of claim 1, wherein the decelerator is located below the first motor, the first blade is located below the decelerator, and the spray member is located below the first blade.

3. The plant protection drone of claim 2, further comprising a second blade coaxial with the first blade, the second blade being located above the first motor.

4. The unmanned aerial vehicle for plant protection as claimed in claim 3, wherein a second motor is further provided on the horn, the second blade is mechanically coupled to a rotor of the second motor, and the rotor of the first motor can rotate the second blade.

5. A plant protection unmanned aerial vehicle as claimed in claim 3 or 4, wherein the second blade is located above the horn, and the first blade and the spray member are located below the horn.

6. The unmanned aerial vehicle for plant protection of claim 2, wherein the first motor further comprises a rotating shaft mechanically coupled to the rotor, the rotating shaft penetrates through the output shaft of the reducer and is located in the output shaft with a space between an outer side wall of the rotating shaft and an inner side wall of the output shaft, and the spraying part is mechanically coupled to the rotor of the first motor through an output end of the rotating shaft.

7. The plant protection unmanned aerial vehicle of claim 1, wherein the decelerator is located above the first motor, the first blade is located above the decelerator, and the spray member is located below the first motor.

8. The plant protection drone of claim 7, wherein the first paddle is located above the horn, the spray member being located below the horn.

9. The plant protection unmanned aerial vehicle of any one of claims 1-8, wherein the first motor further comprises a rotating shaft, a portion of the rotating shaft being located within the rotor, the spray member being mechanically coupled to the rotor of the first motor through an output end of the rotating shaft.

10. The unmanned aerial vehicle for plant protection of claim 9, wherein the rotating shaft is a hollow rotating shaft having a hollow structure inside, the unmanned aerial vehicle for plant protection further comprises a liquid reservoir and a liquid inlet pipe, a liquid inlet of the liquid inlet pipe is communicated with the inside of the liquid reservoir, a liquid outlet of the liquid inlet pipe is communicated with the hollow structure of the hollow rotating shaft, and liquid in the liquid reservoir is conveyed to the spraying part through the liquid inlet pipe and the hollow structure of the hollow rotating shaft.

11. The unmanned aerial vehicle of claim 9, further comprising a liquid reservoir and a liquid inlet pipe, wherein a liquid inlet of the liquid inlet pipe is in communication with an interior of the liquid reservoir, and a liquid outlet of the liquid inlet pipe is in communication with the spraying component.

12. The unmanned aerial vehicle of claim 11, wherein the liquid outlet of the liquid inlet pipe is located above the spraying component and spaced from the spraying component.

13. A plant protection unmanned aerial vehicle of any one of claims 1 to 12,

the first motor is an inner rotor motor, the inner rotor motor further comprises a stator, the rotor is arranged in the stator, or,

the second motor is an outer rotor motor, the outer rotor motor further comprises a stator, and the rotor is arranged outside the stator.

14. A plant protection unmanned aerial vehicle as claimed in any one of claims 1-13, wherein the reducer is a planetary gear reducer, the planetary gear reducer being arranged coaxially with the rotor, an input of the planetary gear reducer being mechanically coupled with the rotor of the first motor.

15. The plant protection unmanned aerial vehicle of claim 14, wherein the first motor comprises a rotating shaft, the rotating shaft is mechanically coupled with the rotor, and an output end of the rotating shaft is in transmission connection with an input end of the planetary gear reducer.

16. The unmanned aerial vehicle for plant protection as claimed in claim 15, wherein the portion of the rotating shaft for connecting with the input end of the planetary gear reducer is provided with external teeth, and the output end of the rotating shaft is connected with the input end of the planetary gear reducer through the external teeth.

17. The plant protection unmanned aerial vehicle of any one of claims 1-16, wherein the spraying component comprises a centrifugal flail, and the rotor of the first motor rotates the centrifugal flail to fling liquid in the centrifugal flail.

18. The plant protection unmanned aerial vehicle of claim 17, wherein the rotating shaft of the first blade, the rotating shaft of the first motor, and the rotating shaft of the centrifugal flail disk are coaxially disposed.

Images