CN214649043U

CN214649043U - Broadcast system and many rotor unmanned aerial vehicle

Info

Publication number: CN214649043U
Application number: CN202120548854.9U
Authority: CN
Inventors: 冯壮; 张瑞强
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-11-09
Anticipated expiration: 2031-03-16

Abstract

The utility model provides a scattering system and a multi-rotor unmanned aerial vehicle, wherein the scattering system comprises a feeding port, a material conveying mechanism and a material scattering mechanism; the feeding port is used for being in butt joint with the material box; the material conveying mechanism comprises a screw mechanism and a driving device in transmission connection with the screw mechanism; the material scattering mechanism is used for scattering materials in the material box; the driving device can drive the screw mechanism to rotate, and the screw mechanism conveys materials from the feeding port to the material scattering mechanism in a rotating mode. The utility model provides a scatter system and many rotor unmanned aerial vehicle can scatter mechanism's ration feeding to the material, improves many rotor unmanned aerial vehicle's the homogeneity of scattering.

Description

Broadcast system and many rotor unmanned aerial vehicle

Technical Field

The utility model relates to an agricultural equipment technical field especially relates to a scatter system and many rotor unmanned aerial vehicle.

Background

In recent years, agricultural modernization and precision agriculture are continuously developed, and the development of agricultural machinery provides great convenience for agricultural modernization. The sowing system is carried on the unmanned aerial vehicle to realize the sowing of the materials in the forms of particles and powder, such as rice sowing, fertilization and other scenes, and a high-efficiency and convenient operation method is provided for agricultural modernization. Traditional unmanned aerial vehicle's system of scattering, when scattering granule or powder material, the feeding mode that the material granule was carried to the dish of scattering from the storage case relies on gravity blanking mode. According to the feeding mode, the flow controllable range of the material particles is low, and the blanking flow of the material particles is difficult to accurately control.

SUMMERY OF THE UTILITY MODEL

The utility model provides a scatter system and many rotor unmanned aerial vehicle aims at realizing scattering mechanism's ration feeding to the material, improves many rotor unmanned aerial vehicle's the homogeneity of scattering.

The utility model provides a system of scattering for many rotor unmanned aerial vehicle, the system of scattering includes:

the feeding port is used for being in butt joint with the material box;

the material conveying mechanism comprises a screw mechanism and a driving device in transmission connection with the screw mechanism;

the material scattering mechanism is used for scattering the materials in the material box;

the driving device can drive the screw mechanism to rotate, and the screw mechanism conveys the materials from the feeding port to the material spreading mechanism in a rotating mode.

In the sowing system of the present invention, the screw mechanism includes at least one of: a worm, a spiral brush; and/or the presence of a gas in the gas,

the number of the screw mechanisms comprises at least two, and at least two screw mechanisms are coaxially arranged.

The utility model discloses an among the system of scattering, screw mechanism includes first screw mechanism and second screw mechanism, the pan feeding mouth includes first pan feeding mouth and second pan feeding mouth, the system of scattering still including be used for with the butt joint of mechanism is scattered to the material first discharge gate and second discharge gate, first screw mechanism can with the material is followed first pan feeding mouth conveying to first discharge gate, second screw mechanism can with the material is followed second pan feeding mouth conveying to the second discharge gate.

In the sowing system of the present invention, the first screw mechanism and the second screw mechanism are coaxially disposed.

In the utility model discloses a in the system of scattering, when the system of scattering is connected in the frame of many rotor unmanned aerial vehicle, the projection of first pan feeding mouth and first discharge gate on the plane perpendicular to the course axle of many rotor unmanned aerial vehicle is arranged along first direction in proper order, the projection of second pan feeding mouth and second discharge gate on the plane perpendicular to the course axle of many rotor unmanned aerial vehicle is arranged along second direction in proper order, first direction with the second direction is opposite; the first screw mechanism rotates in a direction opposite to a direction of rotation of the second screw mechanism.

In the utility model discloses a in the system of scattering, when the system of scattering is connected in the frame of many rotor unmanned aerial vehicle, the projection of first pan feeding mouth and first discharge gate on the plane perpendicular to the course axle of many rotor unmanned aerial vehicle arranges the setting in proper order along first direction, the second pan feeding mouth and the second discharge gate set gradually along the first direction; the rotation direction of the first screw mechanism is the same as the rotation direction of the second screw mechanism.

In the utility model, when the sowing system is connected to the frame of the multi-rotor unmanned aerial vehicle, the first discharge port and the second discharge port are arranged in a direction parallel to the roll axis of the multi-rotor unmanned aerial vehicle; and/or the presence of a gas in the gas,

when the system of scattering connect in when many rotor unmanned aerial vehicle's frame, first discharge gate with the second discharge gate with many rotor unmanned aerial vehicle's every single move axle parallel direction is arranged the setting.

In the sowing system of the present invention, the output shaft of the driving device is coaxial with the rotating shaft of the screw mechanism; and/or the output shaft of the driving device is non-coaxial and non-parallel with the rotating shaft of the screw mechanism.

In the sowing system of the present invention, the driving device comprises a motor; and/or the presence of a gas in the gas,

the material scattering mechanism comprises a throwing disc scattering mechanism or an air pump scattering mechanism.

In the spreading system of the utility model, the material spreading mechanism comprises a throwing disk, when the throwing disk rotates, the material in the throwing disk can be thrown out along the periphery of the throwing disk; when the sowing system is connected to the frame of the multi-rotor unmanned aerial vehicle, the included angle between the rotating plane of the throwing disc and the course shaft of the multi-rotor unmanned aerial vehicle is greater than or equal to 0 degree and smaller than 90 degrees.

The utility model discloses an among the system of scattering, the material case is carried in many rotor unmanned aerial vehicle's the frame.

The utility model discloses an among the system of scattering, material transport mechanism is located the material case with the material is scattered between the mechanism.

The utility model also provides a many rotor unmanned aerial vehicle, include:

a frame; and

a spreader system as claimed in any preceding claim, mounted to the frame.

In the multi-rotor unmanned aerial vehicle of the present invention, the multi-rotor unmanned aerial vehicle is configured to adjust at least one of a motion state of the material scattering mechanism and a driving parameter of the driving device, so as to adjust a scattering amount of the material scattered from the scattering system; the motion state comprises a motion direction and/or a motion speed; the drive parameters include a rotational speed and/or a rotational direction.

The utility model provides a scatter system and many rotor unmanned aerial vehicle can scatter mechanism's ration feeding to the material, improves many rotor unmanned aerial vehicle's the homogeneity of scattering.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of embodiments of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a sowing system according to an embodiment of the present invention;

fig. 2 is a schematic view of an application scene of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a sowing system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention;

fig. 9 is a schematic flow chart of a sowing control method of a plant protection unmanned aerial vehicle provided by an embodiment of the present invention.

Description of reference numerals:

1000. a plant protection unmanned aerial vehicle;

100. a sowing system;

10. a feeding port; 11. a first feeding port; 12. a second feeding port;

20. a material conveying mechanism; 21. a screw mechanism; 211. a first screw mechanism; 212. a second screw mechanism; 22. a drive device;

30. a material scattering mechanism; 31. throwing the disc; 32. spreading openings; 40. a material box; 51. a first discharge port; 52. a second discharge port;

200. a frame; 201. a body; 202. a foot rest; 300. a power system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

The utility model discloses an inventor discovers, traditional unmanned aerial vehicle's system of scattering, when scattering granule or powder material, the feeding mode that the material granule was carried to the dish of scattering from the storage case relies on gravity blanking mode or gyro wheel ration formula feeding mode.

The gravity blanking mode is relied on, the influence of materials is large (such as viscous materials), the controllable range and the controllable precision of the flow of material particles are low, the blanking flow of the material particles is difficult to control accurately, and the scattering uniformity is not ideal enough.

And the roller ration formula feeding mode, the blanking is discontinuous, and under unmanned aerial vehicle's the certain circumstances of flying speed, it is inhomogeneous to scatter the density.

Therefore the utility model discloses an inventor provides a system of scattering, many rotor unmanned aerial vehicle and scatter control method to the realization is to the material scattering mechanism ration feeding, improves many rotor unmanned aerial vehicle's the homogeneity of scattering.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, an embodiment of the present invention provides a broadcast system 100 for a plant protection unmanned aerial vehicle 1000 (see fig. 2).

Please refer to fig. 2, fig. 2 shows a schematic structural diagram of a plant protection unmanned aerial vehicle 1000 provided by an embodiment of the present invention.

Illustratively, the plant protection drone 1000 may be a rotary wing drone, a fixed wing drone, an unmanned helicopter, or a fixed wing-rotary wing hybrid drone, or the like. Wherein, rotor unmanned vehicles can be single rotor unmanned aerial vehicle or many rotor unmanned aerial vehicle. Many rotor unmanned aerial vehicle include two rotor crafts, three rotor crafts, four rotor crafts, six rotor crafts, eight rotor crafts, ten rotor crafts or twelve rotor crafts etc..

Referring to fig. 2, the plant protection unmanned aerial vehicle 1000 includes a frame 200 and a power system 300. The airframe 200 may include an airframe 201 and a foot rest 202 (also referred to as a landing gear). The fuselage 201 may include a central frame and one or more arms coupled to the central frame, the one or more arms extending radially from the central frame. The foot stool 202 is connected with the fuselage 201 and is used for supporting the plant protection unmanned aerial vehicle 1000 during landing.

The seeding system 100 may be mounted on the frame 200 of the plant protection drone 1000. In the flight process of the plant protection unmanned aerial vehicle 1000, the power system 300 can drive the frame 200 to move, rotate, turn over and the like, so as to drive the sowing system 100 to move to different positions or different angles, and perform sowing operation in a preset area.

Illustratively, the material broadcast by the broadcast system 100 includes solid material, such as at least one of solid fertilizer, solid feed, pollen, seeds, solid pesticides, and the like.

The power system 300 may include one or more propellers (not shown) and one or more power motors (not shown) corresponding to the one or more propellers, the power motors and propellers being disposed on the boom of the plant protection drone 1000. The power motor is used for driving the propeller to rotate, so that power is provided for the flight of the plant protection unmanned aerial vehicle 1000, and the plant protection unmanned aerial vehicle 1000 can realize the motion of one or more degrees of freedom by the power. In certain embodiments, the plant protection drone 1000 may rotate about one or more axes of rotation. For example, the rotation axes may include a roll axis, a yaw axis, and a pitch axis. It should be understood that the power motor may be a dc motor, or may be a permanent magnet synchronous motor. Alternatively, the power motor may be a brushless motor, or may be a brush motor.

In some embodiments, referring to fig. 1, a scattering system 100 includes a feed inlet 10, a material transfer mechanism 20, and a material scattering mechanism 30. The feeding port 10 is used for being in butt joint with the material box 40. The material conveying mechanism 20 comprises a screw mechanism 21 and a driving device 22 in transmission connection with the screw mechanism 21. The material spreading mechanism 30 is used for spreading the material in the material tank 40. Wherein, the driving device 22 can drive the screw mechanism 21 to rotate, and the screw mechanism 21 conveys the material from the material inlet 10 to the material spreading mechanism 30 in a rotating manner.

The system 100 of scattering of above-mentioned embodiment, screw mechanism 21 can convey the material from pan feeding mouth 10 to the material mechanism 30 of scattering through rotatory mode, therefore, can control screw mechanism 21's motion information through drive arrangement 22, thereby realize the pay-off flow of control material accurately, controllable scope is high, it is little influenced by the material form, and can realize continuous pay-off, and then realize scattering mechanism 30 ration feeding to the material, the uniformity of scattering of plant protection unmanned aerial vehicle 1000 has been improved.

It is understood that the movement information of the screw mechanism 21 includes the movement speed and/or the movement direction of the screw mechanism 21. The drive parameters of the drive 22 include the rotational speed and/or the rotational direction of the drive 22.

It will be appreciated that the feed rate of material delivered from the inlet 10 to the material spreading mechanism 30 is greater when the rotational speed of the screw mechanism 21 is higher. When the rotation speed of the screw mechanism 21 is small, the feeding flow rate of the material conveyed from the feeding port 10 to the material spreading mechanism 30 is small, so that the rotation speed of the screw mechanism 21 can be controlled by the driving device 22 to achieve the purpose of quantitative spreading.

In some embodiments, the screw mechanism 21 includes at least one of: worms, spiral brushes, and the like.

Referring to fig. 1 and 3, in some embodiments, the number of screw mechanisms 21 corresponds to the number of material spreading mechanisms 30. For example, one screw mechanism 21 is correspondingly provided with one or more material spreading mechanisms 30. As another example, the plurality of screw mechanisms 21 are correspondingly provided with one or more material spreading mechanisms 30. Illustratively, the number of screw mechanisms 21 is one-to-one corresponding to the number of material spreading mechanisms 30.

Referring to fig. 3, in some embodiments, the number of screw mechanisms 21 includes at least two. Exemplarily, the driving device 22 can drive at least two screw mechanisms 21 to rotate at different rotation speeds and/or steering, so that the plant protection unmanned aerial vehicle 1000 can broadcast materials according to actual scene requirements, and the operation flexibility of the plant protection unmanned aerial vehicle 1000 is improved.

Referring to fig. 3, the screw mechanism 21 includes a first screw mechanism 211 and a second screw mechanism 212. The inlet 10 includes a first inlet 11 and a second inlet 12. The seeding system 100 also includes a first feed port 51 and a second feed port 52 for interfacing with the material seeding mechanism 30. The first screw 211 is capable of transferring the material from the first feeding port 11 to the first discharging port 51. The second screw mechanism 212 is capable of transferring material from the second inlet port 12 to the second outlet port 52.

The motion information of the first screw mechanism 211 is controlled by controlling the driving parameters of the driving device 22 corresponding to the first screw mechanism 211, so that the feeding flow rate of the material conveyed from the first feeding port 11 to the material spreading mechanism 30 through the first discharging port 51 is accurately controlled. The movement information of the second screw mechanism 212 is controlled by the driving parameters of the driving device 22 corresponding to the second screw mechanism 212, so that the feeding flow of the material conveyed from the second feeding port 12 to the material spreading mechanism 30 through the second discharging port 52 can be accurately controlled, quantitative feeding to the material spreading mechanism 30 is realized, and the spreading uniformity of the plant protection unmanned aerial vehicle 1000 is improved.

It will be appreciated that the number of the driving devices 22 may be designed according to actual requirements, such as one, two, three or more. The driving device 22 corresponding to the first screw mechanism 211 may be the same as the driving device 22 corresponding to the second screw mechanism 212, and the driving parameters of the driving device 22 may be the same driving device 22, or two driving devices 22 independent of each other.

For example, one driving device 22 can simultaneously drive the first screw 211 and the second screw 212 to rotate. The structure is simple, and the weight and/or volume of the sowing system 100 can be reduced as much as possible under the condition that the first screw mechanism 211 and the second screw mechanism 212 are ensured to work normally.

In some embodiments, the drive 22 comprises a motor. The motor of the driving device 22 may be a dc motor or a permanent magnet synchronous motor. Alternatively, the motor of the driving device 22 may be a brushless motor or a brush motor.

It will be appreciated that the material flowing from the first outlet 51 and the material flowing from the second outlet 52 may flow to the same material spreading mechanism 30 or the same throwing disk 31, or may flow to two different material spreading mechanisms 30 or different throwing disks 31.

Referring to fig. 3, at least two screw mechanisms 21 are coaxially disposed. For example, the screw mechanism 21 includes a first screw mechanism 211 and a second screw mechanism 212, and the first screw mechanism 211 is disposed coaxially with the second screw mechanism 212.

In other embodiments, the number of at least two screw mechanisms 21 may not be coaxially arranged, and is not limited herein. In some embodiments, the number of screw mechanisms 21 may also include one.

It can be understood that the first feeding port 11, the first discharging port 51, the second feeding port 12 and the second discharging port 52 can be designed at any suitable positions according to actual requirements.

For example, the first feeding port 11 is located above or obliquely above one end of the first screw 211. The first discharge port 51 is located below or obliquely below the other end of the first screw 211. Therefore, the materials in the material box 40 can fall to the first feeding port 11 under the action of gravity; the material that sends out with rotatory mode through first screw mechanism 211 can drop to the material scattering mechanism 30 through first discharge gate 51 under the action of gravity, avoids the material to pile up in first pan feeding mouth 11 or first discharge gate 52 department to guarantee to scatter the mechanism 30 ration feeding to the material, improve plant protection unmanned aerial vehicle 1000's the homogeneity of scattering. The relative position of the second feeding port 12 and the second discharging port 52 refers to the relative position of the first feeding port 11 and the first discharging port 52 in any of the above embodiments, and will not be described herein again.

Referring to fig. 4 and 5, in some embodiments, when the sowing system 100 is connected to the frame 200 of the plant protection unmanned aerial vehicle 1000, the projections of the first feeding port 11 and the first discharging port 51 on the plane perpendicular to the heading axis of the plant protection unmanned aerial vehicle 1000 are sequentially arranged along a first direction, and the projections of the second feeding port 12 and the second discharging port 52 on the plane perpendicular to the heading axis of the plant protection unmanned aerial vehicle 1000 are sequentially arranged along a second direction, wherein the first direction is opposite to the second direction.

Illustratively, the projections of the first feeding inlet 11 and the first discharging outlet 51 on the preset projection plane are arranged at intervals along the first direction. The preset projection plane is perpendicular to the course axis of the plant protection unmanned aerial vehicle 1000.

Illustratively, the projections of the second feeding inlet 12 and the second discharging outlet 52 on the preset projection plane are sequentially arranged along the second direction.

Illustratively, the first direction is shown as the X1 direction in fig. 4, and the second direction is shown as the Y1 direction in fig. 4.

Illustratively, the first direction is shown as the Y2 direction in fig. 5, and the second direction is shown as the X2 direction in fig. 5.

Illustratively, the first direction is parallel to the roll axis in fig. 4.

Referring to fig. 4 and 5, in some embodiments, the rotation direction of the first screw 211 is opposite to the rotation direction of the second screw 212, so as to ensure that the material flowing from the first material inlet 11 can be conveyed to the first material outlet 51 and conveyed to the material spreading mechanism 30 when the first screw 211 rotates; the material flowing from the second inlet 12 can be conveyed to the second outlet 52 to the material spreading mechanism 30 when the second screw 212 rotates.

Referring to fig. 6, in some embodiments, when the sowing system 100 is connected to the frame 200 of the plant protection unmanned aerial vehicle 1000, the projections of the first material inlet 11 and the first material outlet 51 on the plane perpendicular to the heading axis of the plant protection unmanned aerial vehicle 1000 are arranged in sequence along the first direction. The second feeding port 12 and the second discharging port 52 are sequentially arranged along the first direction.

Illustratively, the projections of the first feeding inlet 11 and the first discharging outlet 51 on the preset projection plane are arranged at intervals along the first direction, and the projections of the second feeding inlet 12 and the second discharging outlet 52 on the preset projection plane are arranged at intervals along the first direction. The preset projection plane is perpendicular to the course axis of the plant protection unmanned aerial vehicle 1000.

Illustratively, the first direction is the Y3 direction in fig. 6. Of course, in other embodiments, the first direction may be opposite to the direction Y3 in fig. 6.

Illustratively, the first direction is parallel to the roll axis in fig. 6.

In other embodiments, the first direction is parallel to the pitch axis of the plant protection drone 1000.

Referring to fig. 6, in some embodiments, the rotation direction of the first screw 211 is the same as the rotation direction of the second screw 212, so as to ensure that the material flowing from the first material inlet 11 can be conveyed to the first material outlet 51 and conveyed to the material spreading mechanism 30 when the first screw 211 rotates, and the material flowing from the second material inlet 12 can be conveyed to the second material outlet 52 and conveyed to the material spreading mechanism 30 when the second screw 212 rotates.

Referring to fig. 4 to 6, in some embodiments, when the sowing system 100 is connected to the frame 200 of the plant-protection unmanned aerial vehicle 1000, the first discharging hole 51 and the second discharging hole 52 are arranged in a direction parallel to the roll axis of the plant-protection unmanned aerial vehicle 1000.

Illustratively, the direction parallel to the roll axis of the plant protection drone 1000 is the X1 direction or the Y1 direction in fig. 4.

Referring to fig. 7, in some embodiments, when the sowing system 100 is connected to the frame 200 of the plant-protection unmanned aerial vehicle 1000, the first discharging hole 51 and the second discharging hole 52 are arranged in a direction parallel to the pitch axis of the plant-protection unmanned aerial vehicle 1000.

In some embodiments, the transmission between the driving device 22 and the screw mechanism 21 comprises a direct transmission or an indirect transmission.

For example, the driving device 22 is directly driven with the screw mechanism 21, and an output shaft of the driving device 22 is directly connected with the screw mechanism 21. Illustratively, the output shaft of the driving device 22 is coaxial with the rotation shaft of the screw mechanism 21, the structure is simple, and the power consumption of the driving device 22 can be reduced as much as possible.

For another example, the driving device 22 is indirectly driven by the screw mechanism 21, and an output shaft of the driving device 22 is driven by the screw mechanism 21 through an intermediate transmission device. That is, the output shaft of the driving device 22 is not directly connected to the screw mechanism 21, the output shaft of the driving device 22 is directly connected to the intermediate transmission device, and the intermediate transmission device is directly connected to the screw mechanism 21.

Illustratively, the drive device 22 is drivingly connected to the screw mechanism 21 via at least one of a belt drive, a chain drive, a gear drive, a worm drive, a cam drive, and the like.

In some embodiments, the drive means 22 is in indirect drive with the screw mechanism 21. The output shaft of the driving device 22 is not coaxial with and not parallel to the rotating shaft of the screw mechanism 21, so that the size of the sowing system 100 along the direction of the rotating shaft of the screw mechanism 21 can be reduced on the premise that the driving device 22 normally drives the screw mechanism 21 to rotate, and the whole occupied space of the sowing system 100 is favorably reduced.

Illustratively, the output shaft of the drive device 22 is substantially perpendicular to the rotational axis of the screw mechanism 21. Of course, in other embodiments, the output shaft of the driving device 22 may be non-perpendicular, non-coaxial and non-parallel to the rotation axis of the screw mechanism 21. It will be understood that substantially perpendicular to the first component means that the angle between the first and second components may be in the range 85 to 95, within the tolerances allowed by installation or manufacturing tolerances. For example, the first member and the second member are an output shaft of the driving device 22 and a rotation shaft of the screw mechanism 21, respectively.

The screw mechanism 21 may be made of any suitable material, for example, the screw mechanism 21 is made of at least one of plastic, metal, colloid, wood material, etc. For example, the screw mechanism 21 is made of a metal material, and has good strength, stable performance and difficult deformation.

In some embodiments, the material spreading mechanism 30 comprises a pan spreading mechanism or an air pump spreading mechanism.

Illustratively, the material spreading mechanism 30 includes at least one air blower. The air flow generated by the blower can change the motion track of the material conveyed out of the material conveying mechanism 20, thereby realizing the sowing operation.

Referring to fig. 1 and 3, in some embodiments, the material spreading mechanism 30 includes a throwing disk 31. The screw mechanism 21 conveys the material from the feeding port 10 to the throwing disk 31 in a rotating manner. When the flail plate 31 rotates, the material in the flail plate 31 can be flaked out along the periphery of the flail plate 31. When the flail plate 31 rotates, centrifugal force can be generated, and materials in the flail plate 31 can be flaked out along the periphery of the flail plate 31 under the action of the centrifugal force.

Referring to fig. 8, when the sowing system 100 is connected to the frame 200 of the plant unmanned aerial vehicle 1000, an angle between the rotation plane of the throwing disk 31 and the heading axis of the plant unmanned aerial vehicle 1000 is greater than or equal to 0 ° and less than 90 °.

Referring to fig. 8, exemplary seeding system 100 also includes a seeding port 32. The rotation plane of the throwing disk 31 is not horizontally arranged, and the throwing disk 31 can be driven by, for example, a spreading motor to rotate at a high speed to generate a large centrifugal force to throw the materials in the throwing disk 31 out through the spreading openings 32. For example, the material can be thrown out at the spreading opening 32 in a direction tangential to the contour of the throwing disk 31, and the throwing disk 31 is not horizontally arranged, so that the material has a vertical initial speed when being thrown out, and the directional spreading capability of the material is improved.

The spreading openings 32 may, for example, be located at or near an edge of the throwing disk 31.

Illustratively, the radial edge of the slinger 31 has openings which form the spreading openings 3232.

In some embodiments, the angle between the rotation plane of the flail disk 31 and the heading axis of the plant-protection drone 1000 is greater than or equal to 0 ° and less than 90 °, and the spreading opening 32 faces below or obliquely below the plant-protection drone 1000. So, can make the material directly throw away through centrifugal force in plant protection unmanned aerial vehicle 1000's below or oblique below, rather than throwing away with the form of flat throwing, the initial velocity in the vertical direction is big, and its motion trajectory is close to the straight line, consequently can effectively improve the directional ability of scattering of system 100 to have high efficiency, convenient advantage.

It can be understood that when the rotation speed of the throwing disk 31 is high, the material can be thrown out along an oblique tangent line when the throwing disk 31 rotates until the spreading opening 32 is located obliquely below or right below the throwing disk 31, and the included angle with the horizontal direction is small. When the rotation speed of the throwing disk 31 is low, the material is thrown out when the throwing disk 31 rotates to the position where the spreading port 32 is positioned obliquely below or right below the throwing disk 31, and the included angle between the material and the horizontal direction is large. Therefore, the spreading width of the materials can be controlled by controlling the rotating speed of the throwing disk 31. Also, it can be understood that when the rotation direction of the thrower plate 31 is different, the throwing direction of the material is different, for example, as shown in fig. 8, the thrower plate 31 rotates counterclockwise, the material is thrown along the lower right (as shown by the broken line in fig. 8, the throwing track of the material is thrown), and when the thrower plate 31 rotates clockwise, the material is thrown along the lower left. Therefore, the rotation speed and/or the rotation direction of the throwing disc 31 can be controlled by the sowing motor to achieve the purpose of directional sowing or quantitative sowing.

In some embodiments, in the installation state, an angle between a rotation plane of the flail disk 31 and a heading axis of the plant protection drone 1000 is less than or equal to 45 degrees. The included angle between the rotation plane of the flail disc 31 and the heading axis of the plant protection unmanned aerial vehicle 1000 is small, so that when centrifugal force generated by the flail disc 31 rotates at high speed throws out materials, the throwing direction of the materials is downward as much as possible, the vertical initial speed is as large as possible, and the horizontal initial speed is as small as possible. It can be understood that, on the premise that the flail disc 31 rotates at the same rotating speed, the included angle between the rotating plane of the flail disc 31 and the course axis of the plant protection unmanned aerial vehicle 1000 is smaller, the vertical initial speed when the material is flaked out is higher, and the directional sowing capacity is stronger.

In some embodiments, the plane of rotation of the flail disk 31 is substantially parallel to the heading axis of the plant protection drone 1000. The term substantially parallel means that the angle between the two may be in the range of-5 ° to +5 ° within the allowable range of installation or manufacturing tolerances. At this time, the rotation plane of the throwing disk 31 is approximately parallel to the course axis of the plant protection unmanned aerial vehicle 1000, and the throwing disk 31 is basically vertically arranged, so that the materials can be basically thrown out of the throwing disk 31 according to the preset landing direction, the sowing range is the most controllable, and the directional sowing capacity is the strongest.

In other embodiments, the plane of rotation of the flail disk 31 is substantially perpendicular to the heading axis of the plant protection drone 1000.

The number of the material spreading mechanisms 30 can be designed according to actual requirements, such as one, two, three or more. Referring to fig. 3, in some embodiments, the number of material spreading mechanisms 30 includes at least two to effectively increase spreading efficiency.

Referring to fig. 4, when the spreading system 100 is connected to the frame 200 of the plant-protection unmanned aerial vehicle 1000, at least two material spreading mechanisms 30 are arranged in parallel or staggered with respect to the direction parallel to the roll axis of the plant-protection unmanned aerial vehicle 1000.

Illustratively, the at least two material spreading mechanisms 30 are staggered in a direction parallel to the roll axis of the plant protection drone 1000 such that the planes of rotation in which the at least two material spreading mechanisms 30 are located intersect.

When at least two material scattering mechanisms 30 are arranged in parallel or in a staggered manner in the direction parallel to the transverse rolling shaft and the two material scattering mechanisms 30 are not turned at the same time, the materials can be scattered in the front-back direction of the frame 200 of the plant protection unmanned aerial vehicle 1000.

It will be appreciated that the number of material spreading mechanisms 30 comprises at least two and correspondingly the number of flail discs 31 comprises at least two. In some embodiments, when the spreading system 100 is connected to the frame 200 of the plant protection unmanned aerial vehicle 1000, the at least two material spreading mechanisms 30 are arranged in a direction parallel to the roll axis of the plant protection unmanned aerial vehicle 1000, the included angles between the rotation planes of the at least two flail disks 31 and the heading axis of the plant protection unmanned aerial vehicle 1000 are substantially equal, and the inclination directions of the rotation planes of the at least two flail disks 31 are opposite.

The sowing system 100 of the above embodiment, at least two material sowing mechanisms 30 are arranged in the direction parallel to the transverse rolling shaft of the plant protection unmanned aerial vehicle 1000, and the inclination directions of the rotation planes of at least two throwing disks 31 are opposite, and the inclination angles are basically the same, so that the materials in at least two throwing disks 31 are symmetrically thrown out in the front-back direction of the frame 200, and the sowing uniformity of the plant protection unmanned aerial vehicle 1000 is improved.

In some embodiments, when the spreader system 100 is connected to the frame 200 of the plant protection drone 1000, at least two material spreader mechanisms 30 are juxtaposed or staggered in a direction parallel to the pitch axis of the plant protection drone 1000.

When at least two material scattering mechanisms 30 are arranged in parallel or staggered in the direction parallel to the pitch axis and the two material scattering mechanisms 30 are not turned at the same time, the material can be scattered in the left and right directions of the frame 200 of the plant protection unmanned aerial vehicle 1000.

In some embodiments, the material spreading mechanism 30 includes a throwing disk 31. When the sowing system 100 is connected to the frame 200 of the plant protection unmanned aerial vehicle 1000, the at least two material sowing mechanisms 30 are arranged in a direction parallel to the pitching axis of the plant protection unmanned aerial vehicle 1000, the included angles between the rotating planes of the at least two throwing disks 31 and the heading axis of the plant protection unmanned aerial vehicle 1000 are substantially equal, and the inclination directions of the rotating planes of the at least two throwing disks 31 are opposite.

The sowing system 100 of the above embodiment, at least two material sowing mechanisms 30 are arranged in a direction parallel to the pitching axis of the plant protection unmanned aerial vehicle 1000, and the inclination directions of the rotation planes of at least two throwing disks 31 are opposite, so that the materials in at least two throwing disks 31 are symmetrically thrown out in the left and right directions of the rack 200, and the sowing uniformity of the plant protection unmanned aerial vehicle 1000 is improved.

In some embodiments, the seeding system 100 is mounted on the body 201 or foot 202 of the stand 200. For example, the plant protection drone 1000 may include two or more foot stands 202. The seeding system 100 may be mounted on one or more of the foot stands 202.

Illustratively, at least one of the material transfer mechanism 20, the material spreading mechanism 30 and the material tank 40 is mounted on the body 201 or the foot stand 202 of the frame 200 to achieve a secure mounting of the spreading system 100.

Illustratively, the seeding system 100 also includes a material tank 40. The material tank 40 is mounted on the frame 200 of the plant protection unmanned aerial vehicle 1000, so that the sowing system 100 is fixedly connected with the frame 200.

Illustratively, the material tank 40 is mounted on the body 201 or the foot stand 202 of the rack 200. For example, the material tank 40 is engaged with the body 201 of the rack 200.

Referring to fig. 1, in some embodiments, the material tank 40 is located above the material conveying mechanism 20, so that the material in the material tank 40 can fall to the material conveying mechanism 20 through the material inlet 10 under the action of gravity.

Referring to fig. 1, in some embodiments, the material spreading mechanism 30 is located below the material conveying mechanism 20, so that the material conveyed by the material conveying mechanism 20 can fall to the material spreading mechanism 30.

Referring to fig. 1, in some embodiments, the material transfer mechanism 20 is located between the material tank 40 and the material spreading mechanism 30. So, can enough make the material in the material case 40 can drop to material transport mechanism 20 through pan feeding mouth 10 under the action of gravity, can make the material that material transport mechanism 20 conveyed out again to drop to material scattering mechanism 30.

Referring to fig. 1 and 2, an embodiment of the present invention further provides a plant protection unmanned aerial vehicle 1000 including a frame 200 and a sowing system 100. The seeding system 100 is mounted to a rack 200.

The plant protection unmanned aerial vehicle 1000 of above-mentioned embodiment, screw mechanism 21 can convey the material from pan feeding mouth 10 to the material scattering mechanism 30 through rotatory mode, therefore, can control screw mechanism 21's motion information through drive arrangement 22, thereby realize the pay-off flow of accurate ground control material, controllable scope is high, it is little to receive the influence of material form, and can realize continuous pay-off, and then realize scattering mechanism 30 ration feeding to the material, improve plant protection unmanned aerial vehicle 1000's the homogeneity of scattering.

Illustratively, the seeding system 100 includes the seeding system 100 of any of the embodiments described above. Plant protection unmanned aerial vehicle 1000 includes plant protection unmanned aerial vehicle 1000 of any one of the embodiments above.

In some embodiments, the plant protection drone 1000 is used to adjust at least one of the state of motion of the material spreading mechanism 30 and the drive parameters of the drive 22 to adjust the amount of material spread from the spreading system 100 to achieve quantitative spreading.

Illustratively, the state of motion of the material spreading mechanism 30 includes a direction of motion and/or a speed of motion of the material spreading mechanism 30. The drive parameters of the drive 22 include, for example, the rotational speed and/or the rotational direction of the drive 22.

For example, the spreader motor can drive the rotation of the flail disk 31. Under the condition that the driving parameters of the driving device 22 are fixed, the motion state of the flail disc 31 can be adjusted through the spreading motor, so that the spreading amount of the materials spread by the spreading system 100 is adjusted, and quantitative spreading is realized.

For another example, when the movement state of the material spreading mechanism 30 is constant, the amount of the material spread by the spreading system 100 can be adjusted by adjusting the driving parameters of the driving device 22, so as to achieve quantitative spreading.

Of course, it is also possible to adjust both the drive parameters of the drive 22 and the motion of the material spreading mechanism 30 to adjust the amount of material spread from the spreading system 100 to achieve quantitative spreading.

Please refer to fig. 9, fig. 9 is a schematic flow chart of a sowing control method of a plant protection unmanned aerial vehicle 1000 according to an embodiment of the present invention. The sowing control method can be applied to the plant protection unmanned aerial vehicle 1000 of any one of the embodiments, and is used for realizing sowing operation.

As shown in fig. 9, the method for controlling the seeding of the plant protection unmanned aerial vehicle 1000 according to the embodiment of the present invention includes step S101 and step S102.

Step S101, controlling the driving device 22 of the material conveying mechanism 20 to drive the screw mechanism 21 of the material conveying mechanism 20 to rotate, so as to convey the material from the material inlet 10 to the material spreading mechanism 30.

And S102, controlling the material spreading mechanism 30 to spread the materials.

The sowing control method of the embodiment can quantitatively convey the materials from the material inlet 10 to the material sowing mechanism 30 by controlling the driving device 22 to drive the screw mechanism 21 to rotate, and can scatter the materials at the material sowing mechanism 30 by controlling the material sowing mechanism 30, so that the feeding flow of the materials can be accurately controlled, the controllable range is high, the influence of the material form is small, continuous feeding or sowing can be realized, further, quantitative feeding and/or directional sowing to the material sowing mechanism 30 can be realized, and the sowing uniformity of the plant protection unmanned aerial vehicle 1000 is improved.

In some embodiments, the driving device 22 for controlling the material conveying mechanism 20 drives the screw mechanism 21 of the material conveying mechanism 20 to rotate, and comprises: the driving device 22 is controlled to drive the screw mechanism 21 to rotate according to preset driving parameters, wherein the driving parameters comprise the rotating speed and/or the rotating direction.

The preset driving parameters can be set according to actual requirements, and are not limited herein.

In some embodiments, the screw mechanism 21 includes a first screw mechanism 211 and a second screw mechanism 212. The plant protection unmanned aerial vehicle 1000 is used for controlling the driving device 22 to drive the first screw mechanism 211 to rotate in the first motion state so as to adjust the discharge amount of the first discharge hole 51 of the material conveying mechanism 20, and to drive the second screw mechanism 212 to rotate in the second motion state so as to adjust the discharge amount of the second discharge hole 52 of the material conveying mechanism 20. The first motion state comprises a rotational direction and/or a rotational speed of the first screw mechanism 211. The second motion state includes a rotational direction and/or a rotational speed of the second screw mechanism 212.

The first motion state and the second motion state may be the same or different.

In some embodiments, the broadcast control method includes: the control driving device 22 drives the first screw 211 to rotate in the first motion state to adjust the discharge amount of the first discharge port 51 of the material transfer mechanism 20, and drives the second screw 212 to rotate in the second motion state to adjust the discharge amount of the second discharge port 52 of the material transfer mechanism 20.

In some embodiments, the operating parameters of the power system 300 may be adjusted to adjust the motion state of the frame 200, so as to achieve quantitative seeding of the plant protection drone 1000. The operating parameters of the powertrain 300 include a rotational speed and/or a rotational direction of the powertrain 300. The motion state of the gantry 200 includes a motion direction and/or a motion speed of the gantry 200, such as a flying speed, and the like.

In some embodiments, the broadcast control method further comprises: the frame 200 of the plant protection unmanned aerial vehicle 1000 is controlled to move in a preset motion state, and the motion state comprises a motion direction and/or a motion speed.

Illustratively, the operating parameters of the power system 300 are controlled to control the movement of the gantry 200 in a predetermined motion state. For example, the operating parameters of power system 300 are controlled to control the flight of airframe 200 at a predetermined airspeed.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular method step, feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular method steps, features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A broadcast system for a multi-rotor drone, the broadcast system comprising:

the feeding port is used for being in butt joint with the material box;

2. A sowing system according to claim 1, wherein the screw mechanism comprises at least one of: a worm, a spiral brush; and/or the presence of a gas in the gas,

3. The scattering system of claim 1, wherein the screw mechanism comprises a first screw mechanism and a second screw mechanism, the feed ports comprising a first feed port and a second feed port, the scattering system further comprising a first discharge port and a second discharge port for interfacing with the material scattering mechanism, the first screw mechanism capable of conveying the material from the first feed port to the first discharge port, the second screw mechanism capable of conveying the material from the second feed port to the second discharge port.

4. A sowing system according to claim 3, wherein the first screw mechanism is arranged coaxially with the second screw mechanism.

5. The system of claim 3, wherein when the system is coupled to the frame of the multi-rotor drone, the projections of the first inlet port and the first outlet port are sequentially aligned in a first direction on a plane perpendicular to the heading axis of the multi-rotor drone, and the projections of the second inlet port and the second outlet port are sequentially aligned in a second direction on a plane perpendicular to the heading axis of the multi-rotor drone, the first direction being opposite the second direction; the first screw mechanism rotates in a direction opposite to a direction of rotation of the second screw mechanism.

6. The sowing system of claim 3, wherein when the sowing system is connected to a frame of the multi-rotor unmanned aerial vehicle, projections of the first inlet and outlet ports on a plane perpendicular to a heading axis of the multi-rotor unmanned aerial vehicle are sequentially arranged in a first direction, and the second inlet and outlet ports are sequentially arranged in the first direction; the rotation direction of the first screw mechanism is the same as the rotation direction of the second screw mechanism.

7. The spreader system of claim 3, wherein the first and second outlets are arranged in a parallel orientation to a roll axis of the multi-rotor drone when the spreader system is coupled to the frame of the multi-rotor drone; and/or the presence of a gas in the gas,

8. A sowing system according to any one of claims 1-7, wherein the output shaft of the drive means is coaxial with the rotational axis of the screw mechanism; and/or the output shaft of the driving device is non-coaxial and non-parallel with the rotating shaft of the screw mechanism.

9. A sowing system according to any one of claims 1-7, wherein the drive means comprises a motor; and/or the presence of a gas in the gas,

10. The scattering system of claim 9, wherein the material scattering mechanism comprises a flail disk, wherein material in the flail disk can be flaked out along a periphery of the flail disk when the flail disk rotates; when the sowing system is connected to the frame of the multi-rotor unmanned aerial vehicle, the included angle between the rotating plane of the throwing disc and the course shaft of the multi-rotor unmanned aerial vehicle is greater than or equal to 0 degree and smaller than 90 degrees.

11. A broadcast system according to any of claims 1-7 wherein the bin is mounted on the frame of the multi-rotor drone.

12. A scattering system as claimed in any of claims 1-7, wherein the material transfer mechanism is located between the material tank and the material scattering mechanism.

13. A multi-rotor unmanned aerial vehicle, comprising:

a frame; and

a sowing system as claimed in any one of claims 1 to 12, mounted to said housing.

14. A multi-rotor drone according to claim 13, wherein the drone is adapted to adjust at least one of a state of motion of the material spreading mechanism and a drive parameter of the drive to adjust an amount of material spread from the spreading system; the motion state comprises a motion direction and/or a motion speed; the drive parameters include a rotational speed and/or a rotational direction.