CN217198657U - Material scattering system and plant protection unmanned aerial vehicle - Google Patents

Abstract

The utility model discloses a material spreading system and a plant protection unmanned aerial vehicle, which relate to the technical field of aircrafts and comprise an undercarriage body, wherein a space is defined between a front side supporting part and a rear side supporting part of the undercarriage body; the scattering device is provided with a bulk material port for scattering materials, and the avoiding space corresponds to the bulk material port and is used for avoiding the materials discharged by the bulk material port in the material scattering process. When being applied to material system and plant protection unmanned aerial vehicle of scattering at the undercarriage body, the bulk cargo mouth of scattering the device with keep away a space and set up relatively, so that the device of scattering carries out the material and scatter the in-process scatter the route can not and the undercarriage body between take place the interference, when the angle of scattering of route is scattered to the material is wider relatively, when so that scatter the route edge and be higher than the undercarriage body, it also only can with keep away a space coincidence to scatter the route edge, can not scatter on the undercarriage body, let the material scatter the scope, efficiency and the operation precision of scattering can improve.

Description

Material scattering system and plant protection unmanned aerial vehicle

Technical Field

The utility model relates to a technical field of aircraft especially relates to a system and plant protection unmanned vehicles are scattered to material.

Background

Unmanned aerial vehicles can be used in agricultural, industrial, etc. scenarios, while agricultural unmanned aerial vehicles are unmanned aerial vehicles that help optimize agricultural operations, increase crop yields, and monitor crop growth. The sensors and digital imaging capabilities allow farmers a greater understanding of their fields, resulting in improved crop yields and farm efficiency.

In the plant protection field, unmanned aerial vehicle can install various operation equipment on its fuselage to realize spraying operations such as medicament, seed, powder. Wherein, the operation equipment can be for broadcasting system or sprinkler system for the unmanned aerial vehicle that realizes the material and broadcast generally includes fuselage, power component and undercarriage etc. and the undercarriage provides the support for unmanned aerial vehicle's the flying and descending. The spreading/spraying system sprays/spreads the materials from one end close to the machine body to the ground direction through a corresponding mechanism, and related operations such as tank cover and sowing can be completed quickly and in a large area.

However, in the prior art, the spreading system is arranged at the bottom of the machine body, and the materials spread by the spreading system are scattered in the air at a certain angle, so that the effect of covering the preset area is achieved, but in the process of spreading the materials, the spreading path of the materials is limited by the undercarriage which is also arranged at the bottom of the machine body, and partial material path coincides with the undercarriage, so that the materials collide with the undercarriage, the operation accuracy is reduced, meanwhile, the materials spread by the spreading system can be damaged when colliding with the undercarriage, when the materials are seeds, the seed failure rate is greatly increased, the growth rate of crops is reduced, and the harvest of the farmland is affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an one of purpose lies in: the utility model provides a material system of scattering is used for dodging the space of keeping away of scattering the material through setting up at the undercarriage body, avoids scattering the material of device and scatters and take place to interfere between the route to solve the above-mentioned problem that exists among the prior art.

The embodiment of the utility model provides a second purpose lies in: the utility model provides a plant protection unmanned vehicles, solves flight equipment flight operation in-process material and spills the operation essence and cover the technical problem that the area is on the low side.

In order to achieve one of the purposes, the utility model adopts the following technical scheme:

the first aspect provides a flight equipment undercarriage structure of a material spreading system, which comprises an undercarriage body, a front side supporting part and a rear side supporting part, wherein the front side supporting part and the rear side supporting part are limited to be positioned on the same plane; a space is defined between the front side supporting part and the rear side supporting part; the scattering device is provided with bulk cargo openings used for uniformly scattering materials, and the avoiding space corresponds to the bulk cargo openings and is used for avoiding the materials discharged by the bulk cargo openings in the material scattering process. To achieve the second purpose, the utility model adopts the following technical proposal:

in a second aspect, a plant protection unmanned aerial vehicle is provided, comprising a fuselage; one end of the machine arm is connected with the machine body, and the other end of the machine arm is provided with a power assembly for driving the machine body to lift; the material spreading system as described above, the landing gear body is mounted to the bottom of the fuselage.

The utility model has the advantages that: the utility model discloses a material scattering system, through limiting at undercarriage body part and keeping away the space, keep away the space and can be on one sets up the undercarriage body of overall structure, also can form between split type undercarriage body, so that undercarriage body when installing on flight equipment, the in-process that the scattering device implements the scattering through the scattered material mouth, scattered material mouth scatter the route can not take place to interfere with undercarriage body between, when the angle of scattering of material scatter route is relatively wide, so that when scattering the route edge is higher than undercarriage body, scatter the route edge and only can coincide with keeping away the space, can not scatter on undercarriage body;

when this system is scattered to material is applied to plant protection unmanned vehicles, the undercarriage body can avoid scattering the route through dodging the space, lets the material scatter scope, efficiency and scatter the operation precision and can improve to, when scattering materials such as seed, also can avoid scattering and produce between route and the undercarriage body and interfere, the material is scattering the in-process and is bumping with the undercarriage and lead to the destroyed condition of material.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic view of the overall structure of a plant protection unmanned aerial vehicle according to an embodiment of the present invention;

fig. 2 is a side view of a plant protection unmanned aerial vehicle according to an embodiment of the present invention;

fig. 3 is a schematic view of a landing gear body according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a material spreading system according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of the material spreading system according to the embodiment of the present invention (the conveying device and the spreading device are omitted);

fig. 6 is a schematic structural view of a storage container according to an embodiment of the present invention;

fig. 7 is a schematic view of an assembly structure of the conveying device and the sowing device according to the embodiment of the present invention;

fig. 8 is an exploded view of a conveyor and a spreader according to an embodiment of the present invention;

fig. 9 is an exploded view of the transmission mechanism according to the embodiment of the present invention;

FIG. 10 is a schematic view of an outer sleeve according to an embodiment of the present invention;

fig. 11 is a second exploded view of the conveying device and the sowing device according to the embodiment of the present invention;

fig. 12 is an exploded view of a sowing apparatus according to an embodiment of the present invention.

In the figure: 10. a landing gear body; 11. a front-side supporting portion; 12. a rear-side supporting portion; 13. avoiding space; 14. a support frame; 141. a first support bar; 142. a second support bar; 1421. a first support section; 1422. a second support section; 1423. a third support section; 143. a support leg; 145. a connection assembly; 1451. a reinforcing rod; 1452. a connection base; 1453. a connecting rod; 20. a storage container; 21. a feeding port; 22. a discharge outlet; 23. a groove; 30. a sowing device; 31. a material dispersing port; 32. a protective cover; 321. a sowing tray; 3211. a drainage frustum; 3212. a kick-out plate; 3213. a material hiding area; 33. a first drive mechanism; 40. a conveying device; 41. a delivery channel; 42. an outer housing; 421. a protrusion; 43. a pusher member; 44. a second drive mechanism; 45. an outer sleeve; 451. a partition blade; 46. a transmission mechanism; 461. a gear set; 4611. a driving gear; 4612. a driven gear; 467. a transmission box; 50. a body; 51. a boom; 52. a power assembly; 53. a spraying device.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the embodiments of the present invention are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be understood broadly, e.g. as fixed connections, as well as detachably connected, or integrated; can be mechanically or electrically connected; 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 in specific cases to 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. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

This embodiment provides a flight equipment undercarriage structure, and the effect lies in avoiding flight equipment's undercarriage to scattering the interference influence of material when flight equipment scatters the operation to improve flight equipment operation precision and scatter the coverage rate.

As shown in fig. 1-3, the flying apparatus of the present embodiment is adapted to move in an airborne environment, such as a fixed wing aircraft, a rotary wing aircraft, or an aircraft without both fixed wings and rotary wings. The flight device in this embodiment specifically uses unmanned vehicles as an example, and unmanned vehicles can be multi-rotor unmanned vehicles, for example, four-rotor unmanned vehicles, six-rotor unmanned vehicles, eight-rotor unmanned vehicles, twelve-rotor unmanned vehicles, etc., and unmanned vehicles can be used for carrying loads to complete predetermined tasks, for example, carrying imaging devices to shoot, carrying pesticides, nutrient solutions and spraying devices 53 to plant protection tasks, and can also be used in other fields such as geographical mapping, aerial photography, electric power inspection, environmental monitoring and disaster inspection.

Specifically, as shown in fig. 1-2, the unmanned aerial vehicle includes a basic fuselage 50, an arm 51, a landing gear, and a power assembly 52. In this embodiment, taking a quadrotor unmanned aerial vehicle as an illustration object, the number of the power assemblies 52 is four, four power assemblies 52 are distributed in a rectangular area on the periphery of the fuselage 50 through the support of the horn 51, and each power assembly 52 is located at a vertex of the rectangle, of course, the number of the power assemblies 52 may be appropriately changed according to different requirements, for example, the number of the power assemblies 52 may be two, three, six, and the like, even, the number of the power assemblies 52 may be only one, and accordingly, the number of the horn 51 may also be reasonably set according to the number of the power assemblies 52. In the utility model, for each part in the following flying equipment undercarriage structure, the material spreading system and the plant protection unmanned aerial vehicle, the side close to the head of the machine body 50 is the front side of the machine body 50, i.e., in the "forward" direction as indicated by the arrow in the drawing, the side near the rear of the body 50 is the rear side of the body 50, i.e., in the "rear" direction as indicated by the arrow in the drawing, and on both sides of the body 50 as described later, the two sides perpendicular to the front and rear sides of the body 50 on the same horizontal plane, which may also be understood as two sides in the width direction of the body 50, in a state where the flight device is normally placed parallel to the horizontal plane, the upper portion of the fuselage 50 is defined as an upper side, i.e., an "up" direction as indicated by the arrow in the drawing, whereas the lower portion of the body 50 is defined as a lower side, i.e., a "down" direction as indicated by the arrow in the drawing.

The landing gear structure of the flight equipment comprises a landing gear body 10, wherein the landing gear body 10 is installed on the lower side of a fuselage 50 when applied to a plant protection unmanned aerial vehicle, and the landing gear is of a frame structure in general or is used for supporting the flight equipment when the flight equipment takes off and lands or slides on the ground (water surface) through arranging wheels and/or buoys which can float on the water surface on a support and is used for an accessory device for moving on the ground (water surface).

The landing gear body 10 is defined with a front side supporting part 11 and a rear side supporting part 12 which are in the same plane, when the flying equipment is stopped on the ground or on the water, the front side supporting part 11 and the rear side supporting part 12 are supported on the ground or on the water, because the operation equipment for spreading the materials is arranged on the lower side of the body 50 as the landing gear body 10, the spreading path of the operation equipment in the operation process interferes with the landing gear body 10, therefore, a clearance space 13 is defined between the front side supporting part 11 and the rear side supporting part 12, and the clearance space 13 is used for avoiding the materials spread by the flying equipment in the material spreading process.

Dodge the space and can set up at integrated into one piece, interconnect etc. are on the undercarriage body 10 of a body structure, if set up corresponding breach on undercarriage body 10, or, dodge the space and form between the undercarriage body 10 of split type structure, therefore, in-process is broadcast at the operating equipment, scatter the route by the operating equipment then can not produce the interference with undercarriage body 10 between, undercarriage body 10 can not block the route of scattering of material, avoided the material to scatter the in-process collision undercarriage body 10 of scattering, ensure flight equipment's material scattering operation precision, and simultaneously, flight equipment's the angle of scattering also can be adjusted bigger, it is wider to let the material scatter the coverage, effectively improve the operating efficiency.

Because the landing gear body 10 is extended towards the ground at the end close to the fuselage 50, and in order to avoid the landing gear body 10 being arranged at the front and rear sides of the fuselage 50 and affecting the sensing accuracy of the sensors and other devices under the plant protection unmanned aerial vehicle, the landing gear body 10 is generally arranged at the left and right sides of the fuselage 50, so that the spreading angle formed from the material scattering opening 31 to the end of the landing gear body 10 far away from the fuselage 50 at both sides is limited to a relatively small included angle, and the corresponding technical problem described in the background art exists.

In view of the technical problem that above-mentioned traditional undercarriage body 10's structure exists, in this embodiment, because be formed with between front side supporting part 11 and the rear side supporting part 12 and be corresponding to the spacing space 13 that keeps away that bulk cargo mouth 31 set up, consequently, the restriction of undercarriage body 10 can be avoided to the route contained angle of scattering of bulk cargo mouth 31, thereby can let the route contained angle of scattering widen, improve the coverage of scattering of plant protection unmanned vehicles, and then its operating efficiency has been improved, and, because can not take place to interfere between undercarriage body 10 and the material, also can greatly reduced material spoilage, when scattering the material for the seed, can avoid the collision of seed and undercarriage body 10, reduce the bad seed rate.

As shown in fig. 3 to 5, as a further illustration of the landing gear body 10, the landing gear body 10 includes at least two support frames 14 in a frame structure, an upper side of the support frame 14 close to the fuselage 50 defines a first support rod 141, a lower side of the support frame 14 away from the fuselage 50 defines a second support rod 142, in order to connect the first support rod 141 and the second support rod 142 into a whole, the first support rod 141 and the second support rod 142 are arranged at a distance and connected by a leg 143, in this embodiment, there are two legs 143, and the two legs 143 are respectively connected to opposite ends of the first support rod 141 and the second support rod 142, so that the first support rod 141, one of the legs 143, the second support rod 142, and the other leg 143 surround and form the complete support frame 14.

Of course, the structure of the supporting frame 14 may be other than the frame structure, such as a plate structure, a bracket structure, etc., as long as the space 13 is defined on/between the plate structure or the bracket structure.

This embodiment provides two arrangements of the landing gear body 10:

as shown in fig. 3, in the first mode, two support frames 14 are provided;

the landing gear body 10 is installed under the state of flight equipment, and the left and right sides of flight equipment is arranged in to two support frames 14 relatively, and support frame 14 is formed with on at least one support frame 14 and avoids a space 13 according to the structure of bulk cargo mouth 31 and the demand of scattering direction angle, and in this embodiment, bulk cargo mouth 31 is spread the material along the mode that fuselage 50 both sides are fan-shaped expansion, consequently, the position that corresponds bulk cargo mouth 31 on two support frames 14 all is equipped with relative space 13 of avoiding. As shown in fig. 2, the material is spread in the first direction by the bulk material port 31 of the spreading device 30 in a vertical direction. Specifically, the scattering direction is the side of the scattering device 30 away from the flying apparatus, and is toward the lower side of the flying apparatus. It should be noted that the first direction is specifically a side view direction of the flight device.

Because of the space 13, when the flying equipment is parked on the ground or on the water, the contact area between the support frames 14 and the support surface is relatively reduced, so that, in order to ensure that the aircraft keeps the stability of the fuselage 50 in the parked state, the support frames 14 on both sides are respectively extended along the length direction of the flying equipment and are as close to the front side and the rear side of the fuselage 50 as possible, of course, the length of the support frames 14 can be larger than that of the fuselage 50, one end or both opposite ends of the support frames 14 respectively extend out from the front side and/or the rear side of the fuselage 50, and the distance between the two support frames 14 can be larger than the width of the fuselage 50, so that, besides making the parked state of the fuselage 50 more stable, the relative angle between the connecting line between the lower part of the support frame 14 and the bulk material port 31 and the support surface can be increased, and the size of the space 13 can be reduced, the processing difficulty and cost of the avoiding space 13 are reduced.

In order to facilitate understanding, a portion of the second support bar 142 close to the front side of the flight device is defined as a front-side support 11, and a portion of the second support bar 142 close to the rear side of the flight device is defined as a rear-side support 12, in this embodiment, the spreading device 30 is disposed at the lower portion of the body 50, i.e., between the two support frames 14, so that the avoiding space 13 is disposed between the front support and the rear support and corresponds to the material scattering opening 31, and when the spreading angle of the material scattering opening 31 is large enough, the support frames 14 can avoid the spreading path of the material through the avoiding space 13, thereby avoiding mutual interference.

To explain, the second supporting rod 142, as a rod for contacting the ground or the water surface in a parked state of the flying apparatus to form a support, includes a first supporting section 1421, a second supporting section 1422 and a third supporting section 1423 sequentially connected from the front side of the body 50 to the rear side, wherein the first supporting section 1421 and the third supporting section 1423 are respectively disposed at two ends of the second supporting section 1422, and respectively form a front supporting portion 11 and a rear supporting portion 12.

In the aircraft-parked state, the horizontal height of the second support section 1422 is greater than the horizontal height of the first support section 1421 and the third support section 1423, that is, when the landing gear body 10 is mounted on the fuselage 50, the distance between the second support section 1422 and the fuselage 50 is smaller than the distance between the first support section 1421 and the fuselage 50, so that the clearance space 13 is formed between the first support section 1421, the second support section 1422, and the third support section 1423.

More specifically, since a fall is formed between the second supporting section 1422 and the first supporting section 1421 and the third supporting section 1423, in order to ensure that the first supporting section 1421, the third supporting section 1423 and the second supporting section 1422 are connected to form a whole, two opposite ends of the second supporting section 1422 are respectively in a bending structure, and are bent in a direction away from the main body 50 and are respectively connected to the first supporting section 1421 and the third supporting section 1423.

In order to further improve the structural strength of the landing gear body 10, in the present embodiment, two support frames 14 are connected to form an integral support structure, a connection assembly 145 is disposed between the two support frames 14, the connection assembly 145 is connected to the first support rod 141 and/or the second support rod 142, and the connection assembly 145 not only can enhance the structural strength of the landing gear body 10, but also plays a role in connecting and fixing with the fuselage 50.

In this embodiment, the connecting assembly 145 includes a reinforcing bar 1451, and two ends of the reinforcing bar 1451 are respectively connected to the second supporting sections 1422 of the two opposite supporting frames 14. In order to ensure stable parking of the flight apparatus, the two support rods are inclined gradually in a direction away from each other from the end close to the fuselage 50 to the end away from the fuselage 50, and are in a generally "v" shape, so as to increase the spacing between the support parts of the two support rods 14, so that when the flight apparatus is parked, the two support rods 14 are pressed by the fuselage 50 and the opposite sides of the ground and water, the fuselage 50 and the ground apply a moment to the two support rods 14 in a direction away from each other, and the reinforcing rods 1451 are used to fix the spacing between the two support rods 14, so as to ensure that the support parts of the two support rods 14 are kept at a fixed spacing, avoid stepping down over time, and reduce the pressure of a part of the rest of the connecting assemblies 145.

Further, the connecting assembly 145 further includes two connecting bases 1452 and two connecting rods 1453, the two connecting bases 1452 are respectively connected to the first supporting rods 141 of the two supporting frames 14, and a fixing assembly for connecting and fixing with the body 50 is disposed on the connecting bases 1452, and the fixing assembly includes, but is not limited to, a screw hole, a buckle, a positioning groove, a positioning block, and the like; the two ends of the two connecting bases 1452 are connected to form a rectangular fixing structure through the connecting rod 1453, and are fixed between the first support bar 141 and the second support bar 142 of the two support frames 14 with the reinforcing rod 1451, respectively, so that the two support frames 14 are connected to form an integral frame structure, and the structural strength of the landing gear body 10 is further improved.

In the second mode, more than three supporting frames 14 are provided;

in the present embodiment, when the landing gear body 10 is installed on the flight equipment, the support frames 14 are respectively disposed on the front and rear sides of the flight equipment, and specifically, when the scattering device 30 is installed on the lower side of the flight equipment, the support frames 14 are respectively disposed on the front and rear sides of the scattering device 30 along the length direction of the fuselage 50, the second support bar 142 disposed near the front side of the flight equipment is defined as a front-side support 11, and the second support bar 142 disposed near the rear side of the flight equipment is defined as a rear-side support 12.

The front and rear support frames 14 can form the avoiding space 13 between the front support frame 14 and the rear support frame 14, and avoid the spreading path of the spreading device 30.

In this embodiment, the number of the supporting frames 14 may be three, four, five or more, and at least one supporting frame 14 is disposed at the front side or the rear side of the body 50; for example, when the number of the supporting frames 14 is three as viewed from the top or bottom of the main body 50, the connecting lines of the supporting frames 14 on the main body 50 may be in a triangular structure, and when the number of the supporting frames 14 is four, the connecting lines of the supporting frames 14 on the main body 50 may be in a rectangular structure, and so on.

As shown in fig. 3-12, the present embodiment further provides a material spreading system, which is mainly applied to flying equipment, and is used for field activities such as pesticide spraying or water sprinkling in the agricultural industry.

According to the theme of the landing gear structure, the sowing system mainly comprises the flying equipment landing gear structure and a storage container 20 fixedly connected with the flying equipment and/or the landing gear body 10, wherein a hollow accommodating cavity for accommodating materials to be sown, such as seeds, chemical fertilizers, water, liquid medicine and the like, is formed in the storage container 20. The storage container 20 is further provided with a feeding port 21 and a discharging port 22 which are communicated with the accommodating cavity, the feeding port 21 is arranged at the upper part of the storage container 20, so that the worker can conveniently put the materials to be sown into the accommodating cavity through the feeding port 21, and the discharging port 22 is formed at the lower part of the storage container 20 and used for discharging the materials to be sown into the accommodating cavity along with the self weight to the discharging port 22. Taking the above-mentioned manner as an example, the storage container 20 is disposed between the two support frames 14 and is disposed in the space defined by the connecting base 1452 and the second support section 1422.

As shown in fig. 4 to 6, a scattering device 30 is provided at a lower side of the storage container 20, the scattering device 30 is provided with a bulk material port 31 for uniformly scattering materials, in the case of the solution applied to the flying apparatus, since the storage container 20 and the scattering device 30 are sequentially stacked at the lower portion of the body 50, in order to avoid the problem that the body 50 cannot be kept stable in the parked state of the flight equipment due to the large volume of the storage container 20 and the scattering device 30, the landing gear body 10 of the present embodiment must have a height greater than the sum of the thicknesses of the storage container 20 and the scattering device 30, the second support bar 142 of the support frame 14 must therefore be located at the lower portion of the sowing apparatus 30, and therefore, the second supporting rod 142 is required to be provided with a space 13 corresponding to the position of the material dispersing opening 31, so that the supporting frames 14 at the two sides of the lower part of the machine body 50 can avoid the materials discharged from the material discharge opening 31 in the material spreading process through the avoiding space 13.

As shown in fig. 8, 11 and 12, the spreading device 30 includes a shield 32, the shield 32 is used as a member for receiving the material to be spread, a hollow spreading chamber communicated with the discharge opening 22 is formed inside the shield 32, and the bulk material opening 31 is opened in the shield 32 and communicated with the spreading chamber.

In the present embodiment, the protection cover 32 is a flat and substantially circular box structure, and the scattering disk 321 is also circular, so that for the rotation of the scattering disk 321, the center of the scattering disk 321 is pivoted to the center of the protection cover 32 through a rotating shaft, the scattering port 31 is located at one side of the protection cover 32, so that a gap is formed in the axial direction of the protection cover 32, and the scattering disk 321 partially protrudes from the scattering port 31, when the protection cover 32 receives the material to be scattered discharged from the discharge port 22, the material to be scattered is received in the scattering cavity, and the material is thrown out of the scattering port 31 along with the rotation of the scattering disk 321 and the centrifugal force along with the rotation of the scattering disk 321, and the angle at which the material is thrown out is limited by the aperture of the scattering port 31.

In order to drive the spreading disc 321 to rotate, a first driving mechanism 33 is further disposed on the protecting cover 32, in this embodiment, the first driving mechanism 33 is a motor, a housing of the first driving mechanism 33 is fixed on the protecting cover 32, an output shaft of the first driving mechanism 33 rotatably penetrates into the spreading cavity and is fixedly connected with a central shaft hole of the spreading disc 321, the first driving mechanism 33 can be controlled by a controller of the flying apparatus to drive the spreading disc 321 to rotate, and the material to be spread is thrown out of the spreading cavity through the material scattering opening 31 by using a rotating centrifugal force of the spreading disc 321.

In order to enable the materials to be uniformly scattered from the bulk material port 31 and discharged, a flow guiding frustum 3211 is disposed at a rotation center of the spreading tray 321, the flow guiding frustum 3211 protrudes toward the spreading cavity and gradually expands in diameter from one end far away from the spreading tray 321 to one end close to the spreading tray 321 to uniformly drop the materials to be spread onto the spreading tray 321 along the flow guiding frustum 3211, a plurality of material shifting plates 3212 are disposed on the spreading tray 321 at uniform intervals, the material shifting plates 3212 are radially disposed on the spreading tray 321 with the flow guiding frustum 3211 as a center to divide the spreading tray 321 into a plurality of fan-shaped material storage areas 3213, and each material storage area 3213 sequentially passes through the bulk material port 31 during rotation of the spreading tray 321 to divide the materials guided to each material storage area 3213 into multiple fan-shaped material storage areas 3213 to be spread out from the bulk material port 31.

As shown in fig. 7-8 and 11, in order to reduce the pressure on the spreading disk 321 caused by the material to be spread when the spreading disk rotates, the material spreading system is further provided with a conveying device 40 for conveying the material to be spread to the spreading cavity at a constant speed, so as to avoid the damage of the spreading disk 321 caused by the extrusion of too much material to be spread in the spreading cavity, therefore, the conveying device 40 needs to be arranged between the storage container 20 and the spreading device 30, a conveying channel 41 for conveying the material to be spread at a constant speed is formed inside the conveying device 40, and opposite ends of the conveying channel 41 are respectively communicated with the discharge opening 22 and the bulk material opening 31, so as to convey the material to be spread from one end of the discharge opening 22 to one end of the bulk material opening 31.

As shown in fig. 8-10, in particular, the conveying device 40 includes an outer casing 42 as a supporting body, a hollow conveying passage 41 is formed inside the outer casing 42, the conveying passage 41 is communicated with the discharge opening 22, an outer sleeve 45 is further arranged between the outer casing 42 and the shield 32, likewise, the outer sleeve 45 is of a hollow structure, one end of the outer sleeve 45 is mounted on the outer casing 42 and is integrated with the conveying passage 41 formed in the outer casing 42, and the shield 32 is mounted on the other end of the outer sleeve 45 and is communicated with the sowing cavity. The outer shell 42 and the outer sleeve 45 are provided with a material pushing member 43 for uniformly conveying the material to be scattered into the scattering cavity, preferably, the conveying channel 41 is a circular channel structure, the corresponding material pushing member is a screw rod structure, the material pushing member 43 is arranged along the length direction of the conveying channel 41 and is overlapped with the central axis of the conveying channel 41, the material pushing member 43 is rotatably arranged in the conveying channel 41, and helical blades are uniformly distributed on the periphery of the material pushing member 43 along the axial direction of the material pushing member, so that when the material to be scattered falls into the conveying channel 41 through the discharge opening 22, the material to be scattered can be pushed into the scattering cavity from the discharge opening 22 at a uniform speed through the rotation of the material pushing member 43, and the structure of a dragon conveyor is used for uniformly pushing and conveying the material at a uniform speed.

Further, in order to further ensure that the materials to be spread can be uniformly delivered into the spreading cavity, a plurality of separating blades 451 are further arranged between the outer sleeve 45 and the outer sleeve, the separating blades 451 are uniformly arranged in the conveying channel 41, so that excessive materials to be spread are prevented from flowing into the spreading cavity from the conveying channel 41, one end of each separating blade 451 is connected with one another, and the connection point of each separating blade 451 is located at the center position of the conveying channel 41, so that one end of the pushing member 43, which is far away from the discharge port 22, can be rotatably connected with the position to support the position, and each separating blade extends radially in the direction of being far away from each other and is finally connected with the cylinder wall of the outer sleeve 45.

The conveying device 40 described in this embodiment is a conventional means in this technical field, and its specific structure can be further referred to patent: CN 213960718U.

In this embodiment, the power source of the pushing member 43 is relatively independent from the power source of the scattering disk 321, and therefore, the outer casing 42 is further provided with a second driving mechanism 44, the second driving mechanism 44 in this embodiment is a motor, a casing of the second driving mechanism 44 is fixed on the outer casing 42, an output shaft of the second driving mechanism 44 rotatably penetrates into the conveying channel 41 and is coaxially connected with the pushing member 43, the second driving mechanism 44 can be controlled by a controller of the flight device to drive the pushing member 43 to rotate, and the pushing member 43 drives the material to be scattered in the conveying channel 41 to be pushed from one end of the discharging port 22 to one end of the bulk material port 31 through a helical blade of the pushing member 43, and sends the material to be scattered to the scattering cavity at a constant speed, so as to avoid applying excessive axial pressure to the scattering disk 321.

The working principle of the sowing device 30 is as follows: the matching rotation speed of the first driving mechanism 33 and the second driving mechanism 44 is controlled by a controller of the flight device, and the rotation speed of the pushing member 43 is controlled by the second driving mechanism 44, so that on one hand, the materials around the pushing member are stirred to facilitate flowing, and on the other hand, the materials are uniformly, continuously and quantitatively conveyed to the spreading cavity. The materials delivered to the spreading cavity from the delivery channel 41 fall onto the inclined plane of the flow guiding cone 3211, and uniformly slide onto the spreading plate 321 along the inclined plane and are uniformly divided by the material shifting plates 3212 and uniformly fall into the spreading areas, during the spreading process, the first driving mechanism 33 drives the spreading plate 321 to rotate, the material shifting plates 3212 and the flow guiding cone 3211 rotate to the spreading area at the bulk material outlet 31 under the combined action, so that the materials in the spreading area move linearly and are spread out, and because the materials in the spreading area need to be spread out in sequence, the materials cannot be spread out from the spreading area at one time, therefore, the materials are spread out from the range of the bulk material outlet 31 in sequence when the spreading plate 321 rotates, and a fan-shaped radial spreading manner is formed, thereby achieving uniform spreading and achieving the purpose of a certain spreading range.

In the present embodiment, due to the existence of the avoiding space 13, the material spreading range of the material spreading system can be further increased, and in order to increase the spreading path angle of the material spreading, the storage container 20 in the present embodiment includes two material inlets 21 and two material outlets 22, the two material inlets 21 are respectively disposed at two sides of the storage container 20, the two material outlets 22 are disposed side by side, the diameter of the inner cavity of the accommodating cavity gradually narrows towards the direction of the two material outlets 22, and the material to be spread is guided into the material outlets 22.

Correspondingly, the number of the conveying devices 40 is two, the two conveying devices 40 are arranged side by side and are respectively correspondingly communicated with the two rows of material outlets 22, the number of the scattering devices 30 is also two and is respectively correspondingly communicated with the two conveying devices 40, and the material scattering ports 31 of the two scattering devices 30 can be arranged in opposite directions so as to expand the scattering range of the materials.

In this embodiment, the pushing members 43 of the two conveying devices 40 are driven by a second driving mechanism 44, the second driving mechanism 44 may be disposed in an installation space formed between the two conveying devices 40, one end of the outer casing 42 away from the outer sleeve 45 is disposed with a transmission mechanism 46, the transmission mechanism 46 includes a gear set 461 and a transmission box 467 for installing the gear set 461, the gear set 461 includes a driving gear 4611 and two driven gears 4612, the driving gear 4611 is coaxially connected with an output shaft of the second driving mechanism 44, the two driven gears 4612 are respectively disposed at two sides of the driving gear 4611 and engaged with the driving gear 4611, the two driven gears 4612 are respectively coaxially connected with the pushing members 43, so that when the second driving mechanism 44 operates, the two pushing members 43 are synchronously driven to rotate by the gear set 461, thereby pushing the material.

On this basis, the bottom of the storage container 20 and the upper portion of the outer shell 42 are respectively provided with a positioning structure for positioning the storage container 20, a protrusion 421 is arranged between the two conveying channels 41 of the outer shell 42, and a groove 23 matched with the protrusion 421 is arranged between the two rows of material openings 22 at the lower portion of the storage container 20, so that when the storage container 20 is assembled on the outer shell 42, the two rows of material openings 22 of the storage container 20 can respectively correspondingly communicate with the two conveying channels 41 in the outer shell 42.

The plant protection unmanned aerial vehicle comprises a body 50, wherein a horn 51 is arranged on the body 50, one end of the horn 51 is connected to the body 50, and the other end of the horn 51 is provided with a power assembly 52 for driving the body 50 to ascend and descend;

the material spreading system is mounted to the bottom of the fuselage 50, and in particular, the landing gear body 10 is mounted to the bottom of the fuselage 50.

As shown in fig. 1-2, in the present embodiment, the plant protection unmanned aerial vehicle is a quad-rotor unmanned aerial vehicle, and therefore, the number of the corresponding power assemblies 52 is four, the four power assemblies 52 are distributed in a rectangular area on the periphery of the fuselage 50 through the support of the horn 51, and each power assembly 52 is located at one vertex of the rectangle, in some embodiments, a spraying device 53 may be further disposed at the end of the horn 51 to perform spraying of materials such as a liquid medicine in cooperation with the spreading device 30.

Of course, the number of the power assemblies 52 may be changed as appropriate according to different requirements, for example, the number of the power assemblies 52 may be two, three, six, etc., even the number of the power assemblies 52 may be only one, and accordingly, the number of the horn 51 may also be set as appropriate according to the number of the power assemblies 52.

In order to realize the orientation of the materials in the plant protection unmanned aerial vehicle, the material scattering opening 31 is an arc-shaped opening and is arranged on one side of the scattering device 30 far away from the machine body 50, so that the materials are scattered from the material scattering opening 31 in a fan-shaped spreading mode towards the ground direction by the scattering device 30 in the process of scattering the materials, and at least part of the avoiding space 13 is overlapped with the scattering path of the materials.

The large-range coverage of plant protection unmanned equipment in the aspect of material scattering is realized, and the damage rate of materials is reduced while the plant protection operating efficiency is improved.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used merely for convenience in description and simplicity of operation, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be understood by those skilled in the art that the specification as a whole and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive step, and these embodiments are all intended to fall within the scope of the present invention.

Claims (14)

1. A material spreading system, comprising:

a landing gear body (10) defining a front-side support (11) and a rear-side support (12) which are in the same plane;

a clearance space (13) is defined between the front side supporting part (11) and the rear side supporting part (12);

the spreading device (30) is provided with a bulk material port (31) for spreading materials, and the avoiding space (13) corresponds to the bulk material port (31) and is used for avoiding the materials discharged by the bulk material port (31) in the material spreading process.

2. A material spreading system according to claim 1, wherein in a first direction the material spread by the spreading device (30) is spread in a vertical direction.

3. A material scattering system as claimed in claim 1, characterized in that the landing gear body (10) comprises:

the support device comprises at least two support frames (14) in a frame structure, wherein a first support rod (141) is defined at the upper side of each support frame (14), a second support rod (142) is defined at the lower side of each support frame (14), and the first support rods (141) are connected with the second support rods (142).

4. A material spreading system according to claim 3, wherein the first support bar (141) is spaced from the second support bar (142) and connected thereto by a leg (143).

5. A material spreading system according to claim 3, wherein there are two of said support frames (14), at least one of said support frames (14) having said space (13) formed therein;

the landing gear body (10) is arranged on the flying equipment, and the two support frames (14) are oppositely arranged on the left side and the right side of the flying equipment and extend along the length direction of the flying equipment; the portion of the second support bar (142) near the front side of the flight equipment is defined as the front-side support (11), and the portion of the second support bar (142) near the rear side of the flight equipment is defined as the rear-side support (12).

6. The material spreading system of claim 5, wherein the second support bar (142) comprises:

a first supporting section (1421), a second supporting section (1422) and a third supporting section (1423) which are connected in sequence, wherein the front supporting portion (11) and the rear supporting portion (12) are respectively formed on the first supporting section (1421) and the third supporting section (1423);

the horizontal height of the second support section (1422) is greater than the horizontal heights of the first support section (1421) and the third support section (1423), so that the avoiding space (13) is formed among the first support section (1421), the second support section (1422) and the third support section (1423).

7. A material spreading system according to claim 5, wherein a connecting assembly (145) is provided between the support brackets (14), the connecting assembly (145) being connected to the first support bar (141) and/or the second support bar (142).

8. A material spreading system according to claim 3, wherein there are more than three of said support frames (14);

the landing gear body (10) is arranged in the state of flight equipment, the support frame (14) is arranged on the front side and the rear side of the flight equipment respectively, the second support rod (142) close to the front side of the flight equipment is limited to be the front side support part (11), and the second support rod (142) close to the rear side of the flight equipment is limited to be the rear side support part (12).

9. A material spreading system according to any one of claims 1-8, wherein said spreading device (30) further comprises:

the storage container (20) is fixedly connected with the flying equipment and/or the landing gear body (10), a hollow accommodating cavity for accommodating materials to be sowed is formed in the storage container (20), and a feeding port (21) and a discharging port (22) which are communicated with the accommodating cavity are further formed in the storage container (20).

10. A material scattering system as claimed in claim 9, characterized in that the scattering device (30) further comprises:

the protective cover (32) is provided with a hollow scattering cavity communicated with the discharge opening (22), and the material scattering opening (31) is formed in the protective cover (32) and communicated with the scattering cavity;

the spreading disc (321) is rotatably arranged in the spreading cavity, and the material scattering opening (31) is positioned on one side of the spreading disc (321);

the first driving mechanism (33) is arranged on the protective cover (32) and is in driving connection with the scattering disk (321) and used for driving the scattering disk (321) to rotate, and materials to be scattered are thrown away from the scattering cavity through the material scattering opening (31) by utilizing the rotating centrifugal force of the scattering disk (321).

11. The material spreading system of claim 9, further comprising:

conveyor (40), set up storing container (20) with between scattering device (30), its inside transfer passage (41) that is formed with, transfer passage (41) relative both ends respectively with bin outlet (22) reach bulk material mouth (31) intercommunication for will wait to scatter the material by bin outlet (22) one end court bulk material mouth (31) one end direction is carried.

12. A material spreading system according to claim 11, wherein the conveyor (40) comprises:

an outer casing (42) in which the hollow conveying channel (41) is formed, the conveying channel (41) being communicated with the discharge opening (22);

the pushing component (43) is movably arranged in the conveying channel (41);

and the second driving mechanism (44) is arranged on the outer shell (42) and is in driving connection with the pushing component (43) and used for driving the pushing component (43) to move relative to the conveying channel (41) so as to push the materials to be spread in the conveying channel (41) towards one end of the material scattering opening (31) from one end of the material discharge opening (22).

13. A plant protection unmanned vehicles, characterized by, includes:

a body (50);

one end of the machine arm (51) is connected to the machine body (50), and the other end of the machine arm is provided with a power assembly (52) for driving the machine body (50) to ascend and descend;

a material spreading system according to any one of claims 9 to 12, said landing gear body (10) being mounted to the bottom of said fuselage (50).

14. A plant protection unmanned aerial vehicle according to claim 13, wherein the bulk opening (31) is an arc-shaped opening provided on a side of the scattering device (30) remote from the fuselage (50);

in the process of scattering materials, the scattering device (30) scatters the materials in a fan-shaped spreading mode from the material scattering opening (31) towards the ground, and at least part of the position avoiding space (13) is overlapped with the scattering path of the materials.

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