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CN-121986631-A - Centrifugal broadcast sowing device for plant protection unmanned aerial vehicle and working method of centrifugal broadcast sowing device

CN121986631ACN 121986631 ACN121986631 ACN 121986631ACN-121986631-A

Abstract

The invention relates to a centrifugal broadcasting device for a plant protection unmanned aerial vehicle and a working method thereof, comprising a plant protection unmanned aerial vehicle main body and a centrifugal broadcasting mechanism, wherein the bottom of the plant protection unmanned aerial vehicle main body is provided with the centrifugal broadcasting mechanism, a seasoning cylinder consists of an upper flaring section, an equal diameter section and a lower flaring section, a conical seat can be lifted along a rotating shaft to change the cross section area of an annular channel with the lower flaring section, the continuous adjustment of a blanking point from the center to the outer edge of a lifting throwing disc is realized, three groups of arc-shaped blades which can be lifted independently are arranged, the exposed height of the blades is adjusted through a threaded rotating rod, the pushing capacity is changed, and the plant protection unmanned aerial vehicle is suitable for materials with different particle diameters.

Inventors

  • JIA JUNJIE

Assignees

  • 山西红日农业科技股份有限公司

Dates

Publication Date
20260508
Application Date
20260401

Claims (10)

  1. 1. The utility model provides a centrifugal broadcast sowing device for plant protection unmanned aerial vehicle, its characterized in that includes plant protection unmanned aerial vehicle main part (1) and centrifugal broadcast sowing mechanism (2), centrifugal broadcast sowing mechanism (2) are installed to plant protection unmanned aerial vehicle main part (1) bottom, centrifugal broadcast sowing mechanism (2) include workbin (3), workbin (3) bottom is connected with auger conveyer (4) feed end, auger conveyer (4) discharge end is connected with material cover (5) feed end, material cover (5) bottom outside is installed and is kept off cover (6), material cover (5) bottom just is located fender cover (6) center department and installs condiment section of thick bamboo, condiment section of thick bamboo center department runs through and installs pivot (10), fixed disk (11) are installed to pivot (10) bottom, fixed disk (11) top coaxial elevating and drop disk (13) are along the axial of pivot (10), be the circumference direction blade (16) are installed on elevating drop disk (13) and are connected with material cover (5) feed end, material cover (5) bottom outside installs a plurality of fixed disk (16) and second axial and elevating and second axial disk (14) are installed along arc-shaped elevation disk (15) in proper order; The seasoning cylinder comprises an upper flaring section (9), a constant diameter section (7) and a lower flaring section (8) which are sequentially connected from top to bottom, the upper flaring section (9) is fixedly communicated with a material cover (5), the outlet end of the lower flaring section (8) is arranged towards a lifting throwing disc (13), a conical seat (12) is sleeved outside a rotating shaft (10) in a sliding mode, the conical seat (12) is located on the radial inner side of the lower flaring section (8) and forms an annular blanking channel for materials to pass through with the inner wall of the lower flaring section (8), and the conical seat (12) moves in a lifting mode relative to the seasoning cylinder along the axial direction of the rotating shaft (10) to change the relative position between the conical seat and the lower flaring section (8).
  2. 2. The centrifugal broadcast device for the plant protection unmanned aerial vehicle according to claim 1, wherein a motor (17) is arranged on the material cover (5), and the output end of the motor (17) is connected with the rotating shaft (10).
  3. 3. A centrifugal broadcast device for a plant protection unmanned aerial vehicle according to claim 2, wherein the arc-shaped blades (16) comprise a first arc-shaped blade (24), a second arc-shaped blade (25) and a third arc-shaped blade (26), and the first arc-shaped blade (24), the second arc-shaped blade (25) and the third arc-shaped blade (26) are distributed in an equiangular staggered manner in the circumferential direction of the fixed disc (11).
  4. 4. A centrifugal broadcast device for a plant protection unmanned aerial vehicle according to claim 3, wherein the number of the first arc-shaped blades (24) is two, the two first arc-shaped blades (24) are oppositely arranged at 180 degrees, the number of the second arc-shaped blades (25) is two, the two second arc-shaped blades (25) are oppositely arranged at 180 degrees, the number of the third arc-shaped blades (26) is four, and the four third arc-shaped blades (26) are distributed at 90 degrees in equal angles; the first arc-shaped blades (24), the second arc-shaped blades (25) and the third arc-shaped blades (26) are alternately arranged in turn in the circumferential direction, and the included angle between every two adjacent blades is 45 degrees.
  5. 5. The centrifugal broadcast sowing device for the plant protection unmanned aerial vehicle according to claim 4, wherein the bottom end of the first arc-shaped blade (24) penetrates through the lifting throwing disc (13) to be fixed on the fixed disc (11), the bottom end of the second arc-shaped blade (25) penetrates through the lifting throwing disc (13), the fixed disc (11) and the first lifting disc (14) to be fixed on the second lifting disc (15), and the bottom end of the third arc-shaped blade (26) penetrates through the lifting throwing disc (13) and the fixed disc (11) to be fixed on the first lifting disc (14).
  6. 6. The centrifugal broadcast device for the plant protection unmanned aerial vehicle according to claim 5, wherein a plurality of supporting arms (18) are installed in a penetrating manner at the centers of the fixed disc (11) and the lifting throwing disc (13), the top ends of the supporting arms (18) are connected with the conical base (12), the bottom ends of the supporting arms (18) are connected with the fixed base (19), a first threaded rotating rod (20) is installed in a penetrating manner at the center of the fixed base (19) in a threaded manner, and the top ends of the first threaded rotating rods (20) are connected with bearings at the center of the bottom side of the fixed disc (11).
  7. 7. The centrifugal broadcast device for the plant protection unmanned aerial vehicle according to claim 6, wherein a plurality of second threaded rotating rods (21) are installed on the fixed disc (11) in a circumferential equiangular penetrating thread manner, and the top ends of the second threaded rotating rods (21) are connected with the lifting throwing disc (13) through bearings.
  8. 8. The centrifugal broadcast device for the plant protection unmanned aerial vehicle according to claim 7, wherein a plurality of third threaded rotating rods (22) are rotatably arranged on the bottom side of the fixed disc (11) in a circumferential equiangular bearing manner, and the third threaded rotating rods (22) are in threaded connection with the first lifting disc (14).
  9. 9. The centrifugal broadcast device for the plant protection unmanned aerial vehicle according to claim 8, wherein a plurality of fourth threaded rotating rods (23) are rotatably arranged on the bottom side of the fixed disc (11) in a circumferential equiangular bearing manner, the bottom ends of the fourth threaded rotating rods (23) penetrate through the first lifting disc (14) and the second lifting disc (15), and the fourth threaded rotating rods (23) are in threaded connection with the second lifting disc (15).
  10. 10. The working method of the centrifugal broadcast device for the plant protection unmanned aerial vehicle according to claim 9, wherein the specific operation steps of the working method are as follows: During operation, the plant protection unmanned aerial vehicle main body (1) carries a centrifugal broadcast-sowing mechanism (2) to fly above an operation area, an auger conveyor (4) is started, seeds in a feed box (3) are quantitatively conveyed to a material cover (5) through the auger conveyor (4), after the materials enter a seasoning cylinder, the materials fall down along an equal-diameter section (7) and a lower horn section (8) under the action of gravity and finally fall onto a centrifugal broadcast-sowing disc assembly formed by a fixed disc (11), a lifting and throwing disc (13) and arc-shaped blades (16), a motor (17) drives a rotating shaft (10) to rotate at a high speed, the rotating shaft (10) drives the fixed disc (11), the lifting and throwing disc (13), a first lifting disc (14), a second lifting disc (15) and the arc-shaped blades (16) to synchronously rotate, the seeds are accelerated outwards along the radial direction of the arc-shaped blades (16) under the action of centrifugal force and finally thrown out from the edges of the blades, and are uniformly broadcast to the ground after being guided by the shielding cover (6); The conical seat (12) is sleeved on the outer side of the rotating shaft (10) in a sliding manner, an annular blanking channel is formed between the conical seat (12) and the inner wall of the lower horn section (8) of the seasoning cylinder, the fixed seat (19) is driven to lift by rotating the first threaded rotating rod (20), the fixed seat (19) drives the conical seat (12) to lift axially along the rotating shaft (10) through the supporting arm (18), when the conical seat (12) descends, the sectional area of the annular channel between the outer conical surface of the conical seat (12) and the inner wall of the lower horn section (8) is reduced, materials are guided to fall in the upper area of the conical seat (12), blanking points tend to be close to the rotating center of the centrifugal broadcasting disc assembly, and when the conical seat (12) ascends, the sectional area of the annular channel is increased, the materials flow outwards along the outer conical surface of the conical seat (12), and under the guiding action of the lower horn section (8), the blanking points gradually deviate to the radial outer side of the centrifugal broadcasting disc assembly; The lifting of the lifting throwing disc (13) is realized by rotating the second threaded rotating rod (21), the exposed height of the first arc-shaped blade (24) relative to the lifting throwing disc (13) is changed, the pushing capacity of the first arc-shaped blade to materials is changed, the first lifting disc (14) is driven to lift by rotating the third threaded rotating rod (22), the third arc-shaped blade (26) is driven to axially move relative to the fixed disc (11), the effective working height of the first arc-shaped blade is changed, the second lifting disc (15) is driven to lift by rotating the fourth threaded rotating rod (23), and the second arc-shaped blade (25) is driven to axially move relative to the fixed disc (11), so that the independent adjustment of the height of the second arc-shaped blade is realized; And fourthly, for large-grain-size seeds, the first lifting disc (14) and the second lifting disc (15) are lowered, the top ends of the second arc-shaped blades (25) and the third arc-shaped blades (26) are flush with the upper surface of the lifting throwing disc (13), meanwhile, the conical seat (12) is positioned below the lower horn section (8), for medium-grain-size seeds, the first lifting disc (14) is lowered, the top ends of the third arc-shaped blades (26) are flush with the upper surface of the lifting throwing disc (13), meanwhile, the conical seat (12) is positioned in the middle position of the lower horn section (8), for small-grain-size seeds, the arc-shaped blades (16) are all positioned in the working position, and the exposed height of the arc-shaped blades (16) is adjusted by adjusting the lifting throwing disc (13), and meanwhile, the conical seat (12) is positioned in the position of the inner near the equal-diameter section (7) of the lower horn section (8).

Description

Centrifugal broadcast sowing device for plant protection unmanned aerial vehicle and working method of centrifugal broadcast sowing device Technical Field The invention relates to the technical field of agricultural planting, in particular to a centrifugal broadcast sowing device for a plant protection unmanned aerial vehicle and a working method thereof. Background With the development of agricultural modernization, plant protection unmanned aerial vehicle is increasingly widely applied in operations such as seeding, fertilizing, pesticide spraying and the like. The centrifugal broadcasting device is a main broadcasting mode of the plant protection unmanned aerial vehicle due to the advantages of simple structure, uniform broadcasting, high efficiency and the like. However, the existing centrifugal broadcast sowing device has the following technical defects in the use process: the spreading width is fixed, the spreading width of the traditional centrifugal spreading disc is determined by the rotating speed, the adjusting range is limited, the spreading width can not be flexibly adjusted according to the operation requirement, and the adaptability is poor; the blanking point is not adjustable, namely the position of the material falling into the centrifugal disc from the feed box is fixed, so that the acceleration path of the material on the centrifugal disc is single, the material cannot adapt to granular materials with different particle diameters and different densities, and the broadcasting uniformity is poor; The blade structure is single, the blades of the existing broadcast tray are mostly of a fixed structure, the height and the working angle of the blades cannot be adjusted according to the characteristics of materials, and the adaptability to seeds with different particle sizes is insufficient; the flow regulation is inconvenient, namely, the single auger is adopted for conveying, the flow regulation range is limited, and the accurate variable broadcasting can not be realized; The operation quality is unstable, the broadcasting uniformity is difficult to ensure under the influence of the attitude change and airflow of the unmanned aerial vehicle, and particularly, the boundary area is easy to miss or replay. Disclosure of Invention The invention solves the technical problems of non-adjustable broadcasting breadth, fixed blanking points and poor material adaptability in the prior art by providing a centrifugal broadcasting device for a plant protection unmanned aerial vehicle and a working method thereof. In order to achieve the above purpose, the present invention adopts the following technical scheme: The utility model provides a centrifugal broadcast sowing device for plant protection unmanned aerial vehicle, includes plant protection unmanned aerial vehicle main part and centrifugal broadcast sowing mechanism, centrifugal broadcast sowing mechanism is installed to plant protection unmanned aerial vehicle main part bottom, centrifugal broadcast sowing mechanism includes the workbin, workbin bottom is connected with the feed end of auger conveyer, the discharge end of auger conveyer is connected with the feed end of material cover, the fender cover is installed in the material cover bottom outside, material cover bottom just is located fender cover center department and installs the condiment section of thick bamboo, condiment section of thick bamboo center department runs through and installs the pivot, the fixed disk is installed to the pivot bottom, the fixed disk top coaxial mounting goes up and down to get rid of the dish, and goes up and down to get rid of the axial lift of dish along the pivot, it installs a plurality of arc blade to be the circumferencial direction equiangular on the lift to get rid of the dish, first lifter plate and second lifter plate are installed in proper order, and first lifter plate and second lifter plate go up and down along the axial of pivot; The seasoning cylinder comprises an upper flaring section, an equal-diameter section and a lower flaring section which are sequentially connected from top to bottom, the upper flaring section is fixedly communicated with a material cover, the outlet end of the lower flaring section is arranged towards a lifting throwing disc, a conical seat is slidably sleeved outside a rotating shaft and positioned on the radial inner side of the lower flaring section, an annular blanking channel for materials to pass through is formed between the conical seat and the inner wall of the lower flaring section, and the conical seat moves up and down along the axial direction of the rotating shaft relative to the seasoning cylinder to change the relative position between the conical seat and the lower flaring section. Preferably, a motor is arranged on the material cover, and the output end of the motor is connected with the rotating shaft. Preferably, the arc-shaped blades comprise a first arc-shaped blade, a second arc-shaped blade and a t