A device for fertilizing plants

Abstract

This invention relates to the field of fertilization structure technology and discloses a fertilizer application device for a crop protection drone, comprising: a main tank for fixing and installing all structures of the drone's fertilizer application equipment; and a hopper-shaped tank located below the main tank for guiding and discharging fertilizer. Through a compartmentalized storage mechanism, different types of fertilizers can be stored separately. Utilizing internal partitions and a feeding cylinder design, various fertilizers can be stored separately, and quantitative dispensing is achieved through a set mechanical structure, ensuring uniform and precise fertilization. The wind encountered during flight drives a built-in non-powered linkage mechanism. These blades drive the linkage shaft to rotate inside the main tank, thereby driving the spiral conveying blades inside the hopper-shaped tank below, promoting fertilizer mixing and delivery. Through a sprinkler pipe installed on the side wall of the hopper-shaped tank, the mixed fertilizer can be effectively sprayed onto the crops, while the diffuser blades at the bottom further diffuse the sprayed fertilizer.

Description

Technical Field

[0001] This invention relates to the field of fertilization structure technology, specifically to a fertilizer application device for plant protection drones. Background Technology

[0002] In modern agricultural planting, fertilization is an essential task in order to prevent and control pests and supplement crops with nutrients. In most parts of my country, agricultural fertilization is mainly carried out by hand. For example, when sowing wheat and spreading base fertilizer, farmers need to grab the fertilizer by hand and spread it on the field, which is a very labor-intensive task. If the fertilizer is clumped due to moisture, it needs to be crushed by hand before spreading, which can easily damage the hands.

[0003] Traditional drone fertilization equipment typically requires an external power source (such as fuel or electricity) to drive the fertilization machinery. It also struggles to achieve precise control over the amount of fertilizer applied and uniform distribution, especially in large or irregularly shaped farmlands. Traditional drone fertilization equipment is often bulky, making it difficult to operate in complex terrain, and its fertilization speed is limited. Changing or replenishing fertilizer with traditional equipment can be cumbersome and time-consuming. If the added non-powered fertilization system remains on when fertilization is not needed, fertilizer may be mistakenly applied to areas or crops that do not require fertilization, resulting in resource waste and potential environmental risks. If the non-powered fertilization system cannot be shut down as needed, it may increase operational complexity, requiring operators to pay extra attention to controlling the fertilization system's on / off state to avoid unnecessary operational errors. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fertilizer application device for agricultural drones, which solves the problems of traditional drone fertilization equipment, such as external power drive, difficulty in precise fertilization control, complex operation, resource waste, and environmental risks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fertilizer application device for agricultural drones, comprising: The main tank is the structure used to fix and install the drone-based fertilizer dispensing equipment. The hopper-shaped tank is located below the main tank and is used to guide the discharge of fertilizer; The rotor inlay frame is located above the main tank body, and is used in conjunction with the slot opened at the top to fit the non-powered drive structure; The fixed top plate is located above the main tank and is used to fix and install the drone's suspension structure; The T-shaped fixed beam is located above the fixed top plate and is used to enhance the structural stability when the drone is lifted. The sprinkler pipe is located on the side of the rotor frame and is used to directly discharge the stored fertilizer of the equipment; The suspension locking mechanism is located above the fixed top plate and works with the inlay tube to be suspended and connected to the drone at any time, while simultaneously locking and unlocking the non-powered structure. The non-powered linkage mechanism is located inside the equipment, working in conjunction with the toothed column and the feeding cylinder, and utilizing external wind energy to drive the fertilizer addition device; The separate storage compartment is located inside the main tank and is used to classify and store the fertilizer raw materials of the fertilizer addition device.

[0006] Preferably, the hopper-shaped tank is fixedly connected to the bottom of the main tank body, the rotor inlay frame is fixedly connected to the top of the main tank body, the fixed top plate is fixedly connected to the top of the rotor inlay frame, the rotor inlay frame is an arc-shaped frame structure with openings on both sides, the T-shaped fixed beam is fixedly connected to the top center of the rotor inlay frame, the sprinkler pipes are evenly and circumferentially distributed and fixedly connected to the bottom of the side wall of the hopper-shaped tank, the hanging locking mechanism is located on the top of the fixed top plate, the non-powered linkage mechanism is located inside the main tank body and extends to the rotor inlay frame and the inside of the hopper-shaped tank, and the compartment temporary storage mechanism is located inside the main tank body.

[0007] Preferably, the hanging locking mechanism includes a three-way rotating seat, a linkage plate, and an upper locking tongue assembly. The side wall of the three-way rotating seat is rotatably connected to a circumferentially distributed linkage rod. A linkage column is fixedly connected to the bottom end of the three-way rotating seat. The linkage plate is located below the three-way rotating seat. An auxiliary rod is fixedly connected to the inner side wall of the linkage rod facing the fixed top plate. A chuck is rotatably connected to the end of the linkage rod away from the three-way rotating seat. The chuck is slidably connected in a corresponding slot at the top of the fixed top plate. Double-sided hanging rods are fixedly connected to the top of the three-way rotating seat. The upper locking tongue assembly is located at the bottom end of the linkage column.

[0008] Preferably, the non-powered linkage mechanism includes a linkage main shaft, a component transmission assembly, and a lower locking assembly. The linkage main shaft is rotatably connected to the inside of the main tank, while its top and bottom ends extend to the fixed top plate and the outside of the bucket-shaped tank, respectively. The portion of the linkage main shaft extending into the rotor inlay frame is fixedly connected to uniformly circumferentially distributed non-powered fan blades. The side of the non-powered fan blades is provided with a wind-receiving inclined surface. The portion of the linkage main shaft extending into the bucket-shaped tank is fixedly connected to a spiral conveying blade, and the portion of the linkage main shaft extending into the bucket-shaped tank is fixedly connected to uniformly distributed diffuser blades.

[0009] Preferably, the compartmentalized temporary storage mechanism includes a material feeding cylinder and a sorting and discharging component. The material feeding cylinder is fixedly connected to the inside of the main tank. A uniformly circumferentially distributed partition plate is fixedly connected to the inner side wall of the material feeding cylinder, which divides the inside of the material feeding cylinder into multiple areas. Each area of ​​the material feeding cylinder has a feed inlet ramp that runs through and is fixedly connected to its side wall. The sorting and discharging component is located on the bottom wall of the material feeding cylinder and corresponds to multiple partitioned areas.

[0010] Preferably, the upper locking tongue assembly includes a key post and a tapered inclined surface. The key post is fixedly connected to the bottom end of the linkage post. Each key connection end of the key post is an arc-shaped surface structure. The tapered inclined surface is located at the bottom end of the key post and is always located above the linkage spindle.

[0011] Preferably, the component includes a cross bracket, which is fixedly connected to the portion of the linkage spindle extending below the material cylinder. An arc-shaped baffle plate is fixedly connected to the outside of the cross bracket, and the arc-shaped baffle plate is movably connected to the bottom wall of the material cylinder.

[0012] Preferably, the lower locking assembly includes an insert cylinder, which is fixedly connected to the top of the linkage spindle. The top of the insert cylinder is provided with a keyway, and the top of the keyway is provided with a tapered groove surface. The keyway connection ends are all arc-shaped surface structures, and the key post can be embedded in the keyway.

[0013] Preferably, the sorting and discharge assembly includes an arc-shaped drain trough and an external discharge trough. The arc-shaped drain trough is disposed on the bottom wall of a set of partitioned areas inside the material storage cylinder, and the external discharge trough is distributed on the bottom wall of the remaining partitioned areas of the material storage cylinder.

[0014] Preferably, the bottom of the side wall of the main tank is fixedly connected with circumferentially distributed side support feet.

[0015] Working Principle: This equipment, serving as the fertilization structure for agricultural drones, utilizes the wind generated during drone flight for unpowered fertilization. It can be used for fertilization and can also be used to replace fertilizer, accelerating the fertilization and fertilizer replacement process. The main tank, the core of the fertilization structure, secures both the unpowered and fertilization components. It is equipped with side supports for stable placement on the ground when not suspended. The main tank contains a compartmentalized storage mechanism for categorized fertilizer storage. The storage hopper, the main structure for storing fertilizer, is embedded inside the main tank. The inside of the storage hopper... Multiple partitions divide the interior of the feeding cylinder into several storage areas, which can be used to store nitrogen, phosphorus, and potassium fertilizers, as well as dilution water. Fertilizers can be added separately through inlet ramps on the main tank and the side walls of the feeding cylinder. Below the nitrogen, phosphorus, and potassium fertilizer storage areas, there are external discharge troughs for conveying and discharging. Below the dilution water storage area, there is an arc-shaped discharge trough for conveying and discharging. The discharge area of ​​the external discharge trough is smaller than that of the arc-shaped discharge trough, and the arc-shaped discharge trough is located further away from the center of the feeding cylinder's axis than the external discharge trough. Bucket-shaped tanks are installed at the bottom of the main tank and in the output direction of the compartmentalized temporary storage mechanism. These bucket-shaped tanks, utilizing their inverted conical bucket structure, can be used for material collection and conveying, and multiple [other components] are installed on the side walls of the bucket-shaped tanks. The sprinkler system is used for fertilizer application. A rotor mounting frame is installed on the top of the main tank. The curved frame structure with openings on both sides allows the unpowered fan blades, part of the non-powered linkage mechanism, to be mounted within the rotor mounting frame. This allows some of the unpowered fan blades to remain in the external environment. The rotor mounting frame connects and secures the top structure of the main tank. A fixed top plate is located on the top of the rotor mounting frame. The top surface of the fixed top plate has circumferentially distributed slots, and a T-shaped fixed beam is installed on top of the fixed top plate, serving as an auxiliary load-bearing structure for hanging. A hanging locking mechanism is located on the top of the fixed top plate, with circumferentially distributed linkage rods around the three-way rotating seat. The hanging locking mechanism also includes a linkage plate... The sliding sleeve is mounted on the T-shaped fixed beam. An auxiliary rod is added between the linkage rod and the linkage plate, allowing the linkage plate to slide along the T-shaped fixed beam when the three-way rotating seat is lifted into the air. This restricts the three-way rotating seat to linear up-and-down movement only. The end of the linkage rod slides along the slot on the fixed top plate via a chuck, allowing the linkage rod to unfold synchronously along the chuck and engage with the slot on the top of the fixed top plate, serving as a suspension connection. The double-sided lifting rods added to the top of the three-way rotating seat can be quickly attached to the hooks attached to the drone for lifting. The non-powered linkage mechanism, which utilizes the wind to generate power, is installed inside the main tank. The linkage main shaft of the non-powered linkage mechanism runs vertically through the entire device.The top is fitted with a lower locking assembly, and the linkage column at the bottom of the three-way rotating seat is fitted with a hanging locking mechanism. The upper locking tongue assembly included in the mechanism can be interlocked and opened / closed. The toothed key column included in the upper locking tongue assembly is a toothed column structure, and the inlay tube included in the lower locking assembly and the toothed key groove opened inside the inlay tube are toothed key groove structures. When fertilization is not required, the double-sided hanging rods disengage from the hooks, allowing the three-way rotating seat to drive the linkage column to descend along the linkage rod and chuck. The conical inclined surface at the bottom of the toothed key column structure and the conical groove surface included in the lower locking assembly can achieve quick guidance and docking. Both the toothed key connection end of the toothed key column and the inner toothed groove connection end of the toothed key groove have arc-shaped surfaces, which facilitates the quick insertion of the toothed key column into the toothed key groove. The hanging locking mechanism structure stabilizes the insertion. The cylinder and the linkage main shaft ensure that the non-powered linkage mechanism is in the closed state when fertilization is not required. When fertilization is needed, the drone flies to the top of the fertilization device, uses hooks to suspend the two side booms, and takes off into the air above the fertilization area. The upper locking tongue assembly of the suspension locking mechanism disengages from the lower locking assembly at the top of the non-powered linkage mechanism, allowing the non-powered linkage mechanism to start operating according to the wind direction. As the drone flies along the fertilization area, the non-powered fan blades installed inside the rotor inlay frame of the linkage main shaft increase the power of the wind-receiving surface through the addition of wind-receiving slopes on the side, causing the non-powered fan blades to drive the linkage main shaft to rotate inside the main tank. As the linkage main shaft rotates, the part of the linkage main shaft below the compartment temporary storage mechanism is equipped with a... The component connected to the discharge assembly begins the temporary fertilizer discharging operation. The component uses a large-angle arc-shaped baffle plate, fixed to the main shaft by a cross bracket. As the main shaft rotates, the arc-shaped baffle plate sequentially opens one set of external discharge troughs of the discharge assembly while closing the others. Meanwhile, the arc-shaped liquid discharge trough within the discharge assembly remains open. As multiple external discharge troughs open sequentially following the arc-shaped baffle plate, nitrogen, phosphorus, and potassium fertilizers are mixed with dilution water inside the hopper, achieving the effect of classified and quantitative fertilizer discharging. Simultaneously, as the component rotates with the main shaft, the spiral conveyor blades installed inside the hopper move according to the wind direction of the non-powered fan blades. The force also continuously rotates inside the bucket-shaped tank, and the rotation of the spiral structure ensures that the nitrogen, phosphorus, and potassium fertilizers are thoroughly mixed with the dilution water and simultaneously conveyed downwards until they reach the irrigation pipe installed at the bottom of the side wall of the bucket-shaped tank. From there, the fertilizer is sprayed outwards along the irrigation pipe, while the main shaft drives the diffuser blades located below the irrigation pipe to rotate, continuously contacting and spreading the sprayed fertilizer, thereby increasing the area of ​​aerial fertilization. The entire fertilization device is driven by a drone, utilizing the wind generated during flight and the non-powered linkage mechanism to initiate fertilization and fertilizer sorting and quantitative dispensing operations. Simultaneously, when the drone is not in contact with the hoisting device, the hoisting locking mechanism unfolds, causing the lower locking tongue assembly to engage with the upper locking assembly of the non-powered linkage mechanism, thus preventing fertilization from being carried out when not needed.The non-powered linkage mechanism is always in the off state.

[0016] This invention provides a fertilizer application device for agricultural drones. It has the following beneficial effects: 1. This invention features classified storage and quantitative fertilization: The fertilization system has an internal compartmentalized storage mechanism that allows for the classified storage of different types of fertilizers (such as nitrogen, phosphorus, potassium fertilizers, and dilution water). Utilizing internal partitions and feeding cylinders, various fertilizers can be stored separately, and quantitative dispensing is achieved through a pre-set mechanical structure, ensuring uniform and precise fertilization.

[0017] 2. This invention has the effects of power utilization and transmission mechanism: the wind on the opposite side during flight drives the built-in unpowered linkage mechanism (such as unpowered fan blades). These fan blades drive the linkage main shaft to rotate inside the main tank, thereby driving the spiral conveying blades in the bucket-shaped tank below, promoting the mixing and conveying of fertilizer. Through the sprinkler pipe installed on the side wall of the bucket-shaped tank, the mixed fertilizer can be effectively sprayed onto the crops. At the same time, the diffuser blades at the bottom will further diffuse the sprayed fertilizer, increasing the fertilization coverage area.

[0018] 3. The present invention has a hanging and locking mechanism: It is equipped with a complex hanging and locking mechanism and a three-way rotating seat, which allows the drone to quickly attach and release the fertilization device. When fertilization is not needed, the fertilization system can be fixed on the ground, so that its non-powered structure is in the closed state. Using the fertilization system can improve the flexibility and efficiency of fertilization operations, especially in areas with complex terrain or areas that are not easy to access manually. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the main structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the main structure of the present invention. Figure 4 ; Figure 5 This is a cross-sectional view of the main structure of the present invention; Figure 6 This is a schematic diagram of the installation of the hanging locking mechanism of the present invention; Figure 7 This is a schematic diagram of the hanging locking mechanism of the present invention; Figure 8 This is a schematic diagram of the non-powered linkage mechanism of the present invention; Figure 9This is a schematic diagram of the structural combination of the lower locking assembly and the upper locking assembly of the present invention; Figure 10 This is a schematic diagram of the bucket-shaped tank structure of the present invention; Figure 11 This is a cross-sectional schematic diagram of the compartmentalized temporary storage mechanism of the present invention.

[0020] The components include: 1. Main tank; 2. Bucket-shaped tank; 3. Rotor inlay frame; 4. Fixed top plate; 5. T-shaped fixed beam; 6. Sprinkler pipe; 7. Hanging locking mechanism; 8. Non-powered linkage mechanism; 9. Compartment temporary storage mechanism; 10. Side support; 71. Three-way rotating seat; 72. Linkage rod; 73. Linkage column; 74. Linkage disc; 75. Auxiliary rod; 76. Chuck; 77. Double-sided lifting rod; 78. Toothed key column; 79. Conical inclined surface; 81. Linkage main shaft; 82. Inlay cylinder; 83. Toothed keyway; 84. Conical groove surface; 85. Non-powered fan blade; 86. Wind-receiving inclined surface; 87. Cross bracket; 88. Arc-shaped barrier plate; 89. Spiral conveyor blade; 810. Diffusion blade; 91. Material feeding cylinder; 92. Divider plate; 93. Feeding inclined channel; 94. Arc-shaped drainage trough; 95. External discharge trough. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 - Appendix Figure 3This invention provides a fertilizer application device for an agricultural drone, comprising: a main tank 1 for fixing and installing all structures of the drone fertilizer application device; a bucket-shaped tank 2 located below the main tank 1 for guiding and discharging fertilizer; a rotor mounting frame 3 located above the main tank 1, which, in conjunction with a slot on the top, is used to mount a non-powered drive structure; a fixed top plate 4 located above the main tank 1 for fixing and installing the drone's hanging structure; and a T-shaped fixing beam 5 located above the fixed top plate 4 for enhancing structural stability during drone lifting. The bucket-shaped tank 2 is fixedly connected to the bottom of the main tank 1, and the rotor mounting frame 3 is fixedly connected to the top of the main tank 1. The rotor mounting frame 3 is an arc-shaped frame structure with openings on both sides. The structure consists of a fixed top plate 4 fixedly connected to the top of the rotor inlay frame 3; a T-shaped fixed beam 5 fixedly connected to the top center of the rotor inlay frame 3; sprinkler pipes 6 evenly distributed circumferentially fixedly connected to the bottom of the side wall of the bucket-shaped tank 2; a hanging locking mechanism 7 located on the top of the fixed top plate 4; a non-powered linkage mechanism 8 located inside the main tank body 1 and extending into the rotor inlay frame 3 and the bucket-shaped tank 2; a compartmentalized temporary storage mechanism 9 located inside the main tank body 1; and sprinkler pipes 6 located on the side of the rotor inlay frame 3 for directly discharging the stored fertilizer. Circumferentially distributed side support legs 10 are fixedly connected to the bottom of the side wall of the main tank body 1. This equipment serves as the fertilization structure for agricultural unmanned aerial vehicles and can utilize... After being hoisted, the drone utilizes the wind generated during flight to perform unpowered fertilization operations. It can be used for fertilization and can also be used for fertilizer replacement, accelerating the fertilization and fertilizer replenishment speed of the drone. Firstly, the main tank 1 serves as the main structure of this fertilization system, used to fix the unpowered structure and the fertilization structure. It is equipped with side supports 10 for stable placement on the ground when not hoisted. Simultaneously, a compartmentalized storage mechanism 9 is provided inside the main tank 1 for classified storage of fertilizer. A bucket-shaped tank 2 is installed at the bottom of the main tank 1 and in the output direction of the compartmentalized storage mechanism 9. The bucket-shaped tank 2 utilizes its own inverted conical bucket structure... It can be used for material collection and conveying, and can be used for fertilizer application through multiple sets of sprinkler pipes 6 installed on the side wall of the bucket-shaped tank 2. The top of the main tank 1 is equipped with a rotor inlay frame 3. The arc-shaped frame structure with openings on both sides can embed the unpowered fan blades 85 included in the unpowered linkage mechanism 8 into the rotor inlay frame 3, while allowing some of the unpowered fan blades 85 to remain in the outside environment. The rotor inlay frame 3 is used to connect and fix the top structure of the main tank 1. A fixed top plate 4 is opened on the top of the rotor inlay frame 3. The top surface of the fixed top plate 4 is provided with circumferentially distributed slots. A T-shaped fixed beam 5 is installed on the top of the fixed top plate 4, which can be used as an auxiliary load-bearing structure when hanging.

[0023] Please see the appendix Figure 1 - Appendix Figure 9The suspension locking mechanism 7 is located above the fixed top plate 4 and works with the inlay tube 82 to be suspended and connected to the UAV at any time, simultaneously locking and unlocking the non-powered structure. The suspension locking mechanism 7 includes a three-way rotating seat 71, a linkage plate 74, and an upper locking tongue assembly. A circumferentially distributed linkage rod 72 is rotatably connected to the side wall of the three-way rotating seat 71. A linkage column 73 is fixedly connected to the bottom end of the three-way rotating seat 71. The linkage plate 74 is located below the three-way rotating seat 71. An auxiliary rod 75 is fixedly connected to the inner side wall of the linkage rod 72 facing the fixed top plate 4. The end of the linkage rod 72 away from the three-way rotating seat 71 is rotatably connected to... A chuck 76 is connected and slidably connected to the corresponding slot on the top of the fixed top plate 4. A double-sided hanging rod 77 is fixedly connected to the top of the three-way rotating seat 71. The upper locking tongue assembly is located at the bottom of the linkage column 73. The upper locking tongue assembly includes a keyed column 78 and a tapered inclined surface 79. The keyed column 78 is fixedly connected to the bottom of the linkage column 73. Each keyed connection end of the keyed column 78 has an arc-shaped surface structure. The tapered inclined surface 79 is located at the bottom of the keyed column 78 and is always positioned above the linkage spindle 81. A hanging locking mechanism 7 is provided on the top of the fixed top plate 4, which includes a three-way rotating seat 77. A series of circumferentially distributed linkage rods 72 are installed around the rotating seat 71. Simultaneously, the linkage disc 74 included in the suspension locking mechanism 7 is slidably mounted on the T-shaped fixed beam 5. An auxiliary rod 75 is installed between the linkage rods 72 and the linkage disc 74, allowing the linkage disc 74 to slide along the T-shaped fixed beam 5 when the three-way rotating seat 71 is lifted into the air, thus restricting the three-way rotating seat 71 to linear vertical displacement. The ends of the linkage rods 72 slide along the slots of the fixed top plate 4 via the added chuck 76, enabling the linkage rods 72 to unfold synchronously along the chuck 76. The linkage rod 72 and chuck 76 engage with the slot on the top of the fixed top plate 4, serving as a hanging connection. The double-sided lifting rods 77 added to the top of the three-way rotating seat 71 can be quickly attached and lifted by the hook added to the drone. The non-powered linkage mechanism 8, which uses the wind to generate power, is installed inside the main tank 1. The linkage main shaft 81 included in the non-powered linkage mechanism 8 runs through the entire equipment from top to bottom. The lower locking assembly added to the top of the shaft and the upper locking tongue assembly included in the hanging locking mechanism 7 added to the linkage column 73 at the bottom of the three-way rotating seat 71 can be mutually locked and opened and closed.

[0024] Please see the appendix Figure 1 - Appendix Figure 9The non-powered linkage mechanism 8 is located inside the equipment. It works in conjunction with the toothed key column 78 and the feeding cylinder 91, utilizing external wind energy to drive the fertilizer applicator. The non-powered linkage mechanism 8 includes a linkage main shaft 81, a component transmission assembly, and a lower locking assembly. The linkage main shaft 81 is rotatably connected to the inside of the main tank 1, while its top and bottom ends extend to the outside of the fixed top plate 4 and the hopper-shaped tank 2, respectively. The portion of the linkage main shaft 81 extending into the rotor inlay frame 3 is fixedly connected to uniformly distributed non-powered fan blades 85. The sides of the non-powered fan blades 85 are provided with wind-receiving inclined surfaces 86. The portion of the linkage main shaft 81 extending into the hopper-shaped tank 2 is fixedly connected to spiral conveying blades 89, and the portion of the linkage main shaft 81 extending into the hopper-shaped tank 2 is fixedly connected to uniformly distributed... The diffuser blade 810, the component passing through the assembly includes a cross bracket 87, the cross bracket 87 is fixedly connected to the part of the linkage spindle 81 extending to the lower part of the material cylinder 91, the outer side of the cross bracket 87 is fixedly connected to an arc-shaped baffle plate 88, the arc-shaped baffle plate 88 and the cross bracket 87 are movably connected to the bottom wall of the material cylinder 91, the lower locking assembly includes an insert cylinder 82, the insert cylinder 82 is fixedly connected to the top of the linkage spindle 81, the top of the insert cylinder 82 is provided with a toothed keyway 83, the top of the toothed keyway 83 is provided with a conical groove surface 84, the toothed key connection ends of the toothed keyway 83 are all arc-shaped surface structures, the toothed key post 78 can be embedded in the toothed keyway 83, the toothed key post 78 included in the upper locking tongue assembly is a toothed post structure, the insert cylinder 82 and the insert cylinder 84 included in the lower locking assembly are all arc-shaped surface structures. The keyway 83 inside the insert 82 is a keyway structure. When fertilization is not required, the double-sided lifting rods 77 disengage from the hooks, allowing the three-way rotating seat 71 to drive the linkage column 73 to descend along the linkage rod 72 and the chuck 76. The tapered inclined surface 79 at the bottom of the keyway column 78 and the tapered groove surface 84 included in the lower locking assembly can achieve quick guidance and docking. Both the keyway connection end of the keyway column 78 and the inner tooth groove connection end of the keyway 83 have arc-shaped surfaces, which facilitates the quick insertion of the keyway column 78 into the keyway 83. The hanging locking mechanism 7 stabilizes the insert 82 and the linkage main shaft 81, so that the non-powered linkage mechanism 8 is in the closed state when fertilization is not required. When fertilization is needed, the drone flies to the fertilization device. The drone is suspended from the top by hooks, holding the double-sided booms 77, and then takes off to the airspace above the fertilization area. The upper locking tongue assembly of the suspension locking mechanism 7 disengages from the lower locking assembly of the top of the non-powered linkage mechanism 8, allowing the non-powered linkage mechanism 8 to start operating according to the wind direction. As the drone begins to fly along the fertilization area, the non-powered fan blades 85, which are added to the part of the linkage main shaft 81 inside the rotor inlay frame 3, increase the power of the wind-receiving surface by adding a wind-receiving slope 86 on the side. This causes the non-powered fan blades 85 to drive the linkage main shaft 81 to rotate inside the main tank 1. As the linkage main shaft 81 rotates, the part of the linkage main shaft 81 below the compartment temporary storage mechanism 9, which is equipped with a component that connects to the classification and discharge component, begins the temporary fertilizer release operation through the component.The component passing through the component has a large-angle arc-shaped baffle plate 88, which is fixed to the linkage main shaft 81 by a cross bracket 87. When the linkage main shaft 81 rotates, the arc-shaped baffle plate 88 will sequentially open one set of the external discharge troughs 95 of the classification and discharge component, and close the remaining sets. The arc-shaped liquid discharge trough 94 included in the classification and discharge component will continue to open. As multiple sets of external discharge troughs 95 follow the arc-shaped baffle plate 88 and open in sequence, nitrogen, phosphorus, and potassium fertilizers and dilution water will mix and blend inside the hopper tank 2 to achieve the effect of classified and quantitative fertilizer dispensing. While the component passing through the component rotates with the linkage main shaft 81, the spiral conveying blades 89 installed inside the hopper tank 2 also rotate continuously inside the hopper tank 2 according to the wind force of the non-powered fan blades 85, and utilize... The rotating spiral structure thoroughly mixes nitrogen, phosphorus, and potassium fertilizer with dilution water, which is then conveyed downwards under pressure until it reaches the sprinkler pipe 6 installed at the bottom of the side wall of the bucket-shaped tank 2. The fertilizer is then sprayed outwards along the sprinkler pipe 6. Simultaneously, the main shaft 81 drives the diffuser blades 810 located below the sprinkler pipe 6 to rotate, continuously contacting and spreading the sprayed fertilizer, thereby increasing the area of ​​aerial fertilization. The entire fertilization device is driven by a drone, utilizing the windward surface generated during flight and the non-powered linkage mechanism 8 to initiate fertilization and fertilizer classification and quantitative dispensing operations. When the drone is not in contact with the hoisting device, the hoisting locking mechanism 7 unfolds, causing the lower locking tongue assembly to engage with the upper locking assembly of the non-powered linkage mechanism 8, ensuring that the non-powered linkage mechanism 8 remains closed when fertilization is not required.

[0025] Please see the appendix Figure 1 - Appendix Figure 11The compartmentalized storage mechanism 9 is located inside the main tank 1 and is used to classify and store the fertilizer raw materials of the fertilizer addition device. The compartmentalized storage mechanism 9 includes a material feeding cylinder 91 and a classification and discharge assembly. The material feeding cylinder 91 is fixedly connected to the inside of the main tank 1. The inner side wall of the material feeding cylinder 91 is fixedly connected with evenly distributed circumferential partition plates 92, which divide the inside of the material feeding cylinder 91 into multiple areas. Each area of ​​the material feeding cylinder 91 has a feed inlet ramp 93 that runs through and is fixedly connected to its side wall. The classification and discharge assembly is located on the bottom wall of the material feeding cylinder 91 and corresponds to multiple partitioned areas. The classification and discharge assembly includes an arc-shaped drain trough 94 and an external discharge trough 95. The arc-shaped drain trough 94 is located on the bottom wall of one set of partitioned areas inside the material feeding cylinder 91, and the external discharge trough 95 is distributed on the bottom of the remaining partitioned areas of the material feeding cylinder 91. The storage cylinder 91, which is part of the temporary storage mechanism 9, serves as the main structure for storing fertilizer. It is embedded inside the main tank 1. The storage cylinder 91 is divided into multiple storage areas by multiple sets of partition plates 92. These areas can be used to store nitrogen, phosphorus, potassium fertilizer and dilution water respectively. Fertilizer can be added through the feed ramps 93 opened on the side wall of the main tank 1 and the storage cylinder 91. An external discharge trough 95 for conveying and discharging fertilizer is opened below the storage area of ​​nitrogen, phosphorus, and potassium fertilizer. An arc-shaped discharge trough 94 for conveying and discharging is opened below the storage area of ​​dilution water. The discharge area of ​​the external discharge trough 95 is smaller than that of the arc-shaped discharge trough 94. At the same time, the arc-shaped discharge trough 94 is located further away from the center of the cylinder 91 than the external discharge trough 95.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fertilizer application device for agricultural drones, characterized in that, include: The main tank (1) is the structure used to fix and install the fertilizer application device for the plant protection drone; The bucket-shaped tank (2) is located below the main tank (1) and is used for guiding the discharge of fertilizer; The rotor inlay frame (3) is located above the main tank (1) and is used in conjunction with the slot opened at the top to fit the non-powered drive structure; The fixed top plate (4) is located above the main tank (1) and is used to fix and install the drone hanging structure; The T-shaped fixed beam (5) is located above the fixed top plate (4) and is used to enhance the structural stability when the UAV is lifted. The sprinkler pipe (6) is located on the side of the rotor inlay frame (3) and is used to directly discharge the stored fertilizer of the fertilizer device for the plant protection drone; The hanging locking mechanism (7) is located above the fixed top plate (4) and works with the inlay tube (82) to be hung and connected to the UAV at any time, while locking and unlocking the non-powered structure. The non-powered linkage mechanism (8) is located inside the fertilizer feeding device for the plant protection drone, and works with the toothed key column (78) and the feeding cylinder (91) to drive the fertilizer feeding device for the plant protection drone using external wind energy. The temporary storage compartment (9) is located inside the main tank (1) and is used to classify and store the fertilizer raw materials for the fertilizer device of the plant protection drone. The hanging locking mechanism (7) includes a three-way rotating seat (71), a linkage plate (74) and an upper locking tongue assembly. The three-way rotating seat (71) has a circumferentially distributed linkage rod (72) rotatably connected to its side wall. The bottom of the three-way rotating seat (71) is fixedly connected to a linkage column (73). The linkage plate (74) is located below the three-way rotating seat (71). The linkage rod (72) is fixedly connected to an auxiliary rod (75) facing the inner side wall of the fixed top plate (4). The end of the linkage rod (72) away from the three-way rotating seat (71) is rotatably connected to a chuck (76). The chuck (76) is slidably connected to the corresponding slot at the top of the fixed top plate (4). The top of the three-way rotating seat (71) is fixedly connected to a double-sided hanging rod (77). The upper locking tongue assembly is located at the bottom of the linkage column (73). The non-powered linkage mechanism (8) includes a linkage main shaft (81), a component passing component and a lower locking component. The linkage main shaft (81) is rotatably connected to the inside of the main tank (1), while the top and bottom ends extend to the outside of the fixed top plate (4) and the bucket-shaped tank (2) respectively. The part of the linkage main shaft (81) extending into the rotor inlay frame (3) is fixedly connected with uniformly circumferentially distributed non-powered fan blades (85). The side of the non-powered fan blades (85) is provided with a wind-receiving inclined surface (86). The part of the linkage main shaft (81) extending into the bucket-shaped tank (2) is fixedly connected with a spiral conveying blade (89). The part of the linkage main shaft (81) extending into the bucket-shaped tank (2) is fixedly connected with uniformly distributed diffuser blades (810). The compartmentalized temporary storage mechanism (9) includes a material storage cylinder (91) and a sorting and discharging component. The material storage cylinder (91) is fixedly connected to the inside of the main tank (1). The inner side wall of the material storage cylinder (91) is fixedly connected with a uniformly circumferentially distributed partition plate (92). The partition plate (92) divides the inside of the material storage cylinder (91) into multiple areas. The side wall of each area of ​​the material storage cylinder (91) is penetrated and fixedly connected with an inlet ramp (93). The sorting and discharging component is set on the bottom wall of the material storage cylinder (91) and corresponds to multiple partitioned areas.

2. The fertilizing device for a plant protection unmanned aerial vehicle according to claim 1, characterized in that, The bucket-shaped tank (2) is fixedly connected to the bottom of the main tank (1), the rotor inlay frame (3) is fixedly connected to the top of the main tank (1), the rotor inlay frame (3) is an arc-shaped frame structure with openings on both sides, the fixed top plate (4) is fixedly connected to the top of the rotor inlay frame (3), the T-shaped fixed beam (5) is fixedly connected to the top center of the rotor inlay frame (3), the sprinkler pipe (6) is evenly distributed in a circular pattern and fixedly connected to the bottom of the side wall of the bucket-shaped tank (2), the hanging locking mechanism (7) is set on the top of the fixed top plate (4), the non-powered linkage mechanism (8) is set inside the main tank (1) and extends to the inside of the rotor inlay frame (3) and the bucket-shaped tank (2), and the compartment temporary storage mechanism (9) is set inside the main tank (1).

3. The fertilizing device for a plant protection unmanned aerial vehicle according to claim 1, characterized in that, The upper locking tongue assembly includes a key post (78) and a tapered inclined surface (79). The key post (78) is fixedly connected to the bottom end of the linkage post (73). Each key connection end of the key post (78) is an arc-shaped surface structure. The tapered inclined surface (79) is located at the bottom end of the key post (78) and is always located above the linkage spindle (81).

4. The fertilizing device for a plant protection unmanned aerial vehicle according to claim 1, characterized in that, The component includes a cross bracket (87), which is fixedly connected to the part of the linkage spindle (81) extending to the bottom of the material cylinder (91). An arc-shaped baffle plate (88) is fixedly connected to the outside of the cross bracket (87), and the arc-shaped baffle plate (88) is movably connected to the bottom wall of the material cylinder (91) with the cross bracket (87).

5. The fertilizing device for a plant protection unmanned aerial vehicle according to claim 1, characterized in that, The lower locking assembly includes an insert cylinder (82), which is fixedly connected to the top of the linkage spindle (81). The top of the insert cylinder (82) is provided with a keyway (83), and the top of the keyway (83) is provided with a tapered groove surface (84). The keyway connection ends of the keyway (83) are all arc-shaped surface structures, and the keyway post (78) can be embedded in the keyway (83).

6. The plant protection unmanned aerial vehicle fertilizer adding device according to claim 1, characterized in that, The classification and discharge component includes an arc-shaped drain trough (94) and an external discharge trough (95). The arc-shaped drain trough (94) is located on the bottom wall of a set of partitioned areas inside the material storage cylinder (91), and the external discharge trough (95) is distributed on the bottom wall of the remaining partitioned areas of the material storage cylinder (91).

7. The plant protection unmanned aerial vehicle fertilizer adding device according to claim 1, characterized in that, The bottom of the side wall of the main tank (1) is fixedly connected with circumferentially distributed side support legs (10).

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