Unmanned aerial vehicle pesticide spraying device capable of spraying uniformly

Abstract

The invention relates to the technical field of pesticide spraying unmanned aerial vehicles, and discloses an unmanned aerial vehicle pesticide spraying device uniform in spraying, comprising: a flight mechanism comprising a control part and a flight part, the control part is located at the axis point of the flight part, the control part is fixedly connected with the flight part, and the control part is used for controlling the flight part; the steering mechanism comprises a driving adjusting part and an auxiliary rotating part, the driving adjusting part is located below the control part and fixedly connected with the control part, the driving adjusting part is further fixedly connected with the auxiliary rotating part, and the driving adjusting part is used for adjusting the orientation of the auxiliary rotating part; the spraying mechanism comprises a medicine storage part and a spraying part, the medicine storage part is fixedly connected with the auxiliary rotating part, and the spraying part is fixedly connected to the lower portion of the medicine storage part. According to the spraying device, the operation efficiency is improved, and the spraying uniformity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying drones, and in particular to a drone spraying device capable of evenly spraying. Background Art

[0002] With the continuous advancement of science and technology, drone technology is increasingly being used in agriculture. Spraying drones are unmanned aerial vehicles equipped with spray systems, primarily used for spraying pesticides on crops in farmland. Through precise flight control and spraying technology, spraying drones can efficiently and evenly apply pesticides to crops, thereby improving pesticide utilization and reducing environmental pollution. Traditional spraying methods, such as manual backpack spraying, cover an average daily area of ​​less than 10 mu (approximately 16 acres). Large-scale machinery relies on field roads and cannot cover complex terrain (terraces, swamps, and orchards). Furthermore, during the middle and late stages of crop growth, dense vegetation makes it difficult for both manual and mechanical spraying to penetrate, resulting in blind spots. As a key tool in modern agriculture, spraying drones are gradually replacing traditional pesticide spraying methods with their efficiency, precision, and environmental friendliness.

[0003] However, in actual applications, spraying drones are often affected by environmental factors such as wind, resulting in uneven pesticide spraying. Spraying drones use the spray system they carry to atomize pesticides into tiny particles, and control the flight route and spraying amount through the flight control system to achieve uniform pesticide coverage. This process requires high stability of the flight environment. Uneven spraying will cause some crops to fail to receive adequate pesticide coverage, thereby affecting the prevention and control of pests and diseases and increasing the risk of crop damage. Uneven spraying will also lead to pesticide waste and increase agricultural production costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a drone spraying device with uniform spraying to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a drone spraying device with uniform spraying, comprising:

[0006] The flying mechanism comprises a control component and a flying component, wherein the control component is located at the axis point of the flying component, the control component is fixedly connected to the flying component, and is used to control the flying component;

[0007] The steering mechanism includes a drive adjustment component and an auxiliary rotating component, wherein the drive adjustment component is located below the control component and is fixedly connected to the control component. The drive adjustment component is also fixedly connected to the auxiliary rotating component, and the drive adjustment component is used to adjust the direction of the auxiliary rotating component;

[0008] The spray mechanism comprises a medicine storage component and a spray component. The medicine storage component is fixedly connected to the auxiliary rotating component, and the spray component is fixedly connected below the medicine storage component.

[0009] Furthermore, the spray component includes an atomizing spray assembly and an auxiliary spray assembly, the auxiliary spray assembly is fixedly connected to the medicine storage component, a plurality of atomizing spray assemblies are provided on the auxiliary spray assembly, and the atomizing spray assembly is rotatably connected to the auxiliary spray assembly.

[0010] Furthermore, the auxiliary spray assembly includes a medicine storage box, a medicine spray bracket, an atomizing nozzle, a medicine delivery pipe and a direction-adjusting component. The medicine storage box is located below the medicine storage component, and the medicine spray bracket is provided below the medicine storage box. The medicine spray bracket is a circular structure, and the medicine storage box is provided at the axis of the medicine spray bracket. The medicine storage box is fixedly connected to the medicine spray bracket, and the medicine storage box is connected to the medicine storage box. Several atomizing nozzles are provided on the outer ring of the medicine spray bracket, and several of the atomizing nozzles are connected to the medicine storage box through the medicine delivery pipe. The direction-adjusting component is located on one side of the atomizing nozzle and is used to control the direction of the atomizing nozzle.

[0011] Furthermore, the steering system includes a steering motor, a steering shaft, a first steering gear and a second steering gear, wherein the first steering gear is fixedly connected to the output end of the steering motor, the second steering gear engages with the first steering gear, the steering shaft is fixedly connected to the second steering gear, and the steering shaft is fixedly connected to the atomizing nozzle.

[0012] Furthermore, the drive adjustment component includes a drive rod, a first drive gear, a second drive gear, a third drive gear and a gear motor, the drive rod is fixedly connected to the control component, the drive rod is connected to an auxiliary rotating component, the first drive gear, the second drive gear and the third drive gear are all fixedly connected to the output end of the gear motor, and the gear motor is provided with multiple, the first drive gear, the second drive gear and the third drive gear engage the auxiliary rotating component.

[0013] Furthermore, the auxiliary rotating component includes a first auxiliary gear, a second auxiliary gear, a third auxiliary gear and a flexion and extension assembly. The first auxiliary gear, the second auxiliary gear and the third auxiliary gear are all rotatably sleeved on the drive rod, and the first auxiliary gear, the second auxiliary gear and the third auxiliary gear are respectively engaged with the first drive gear, the second drive gear and the third drive gear, and the flexion and extension assembly is fixedly connected to the medicine storage component.

[0014] Furthermore, the flexion and extension assembly includes a first flexion and extension arm, a second flexion and extension arm, and a third flexion and extension arm. The first flexion and extension arm, the second flexion and extension arm, and the third flexion and extension arm are all fixedly connected to the driving rod, and the first flexion and extension arm, the second flexion and extension arm, and the third flexion and extension arm are respectively controlled to flex and extend through the first auxiliary gear, the second auxiliary gear, and the third auxiliary gear.

[0015] Furthermore, the atomizing spray assembly includes an atomizing nozzle, an atomizing spray barrel, a guide tube, a guide hole and a guide channel. The atomizing nozzle is conical and fixedly connected to the atomizing spray barrel. The atomizing spray barrel is a hollow structure with a guide tube fixedly connected to its interior. A number of guide holes are provided on the guide tube. A guide channel is left between the guide tube and the inner wall of the atomizing spray barrel, and the guide channel is connected to the atomizing nozzle.

[0016] Furthermore, the atomizing spray assembly also includes a boosting column, boosting blades and a boosting plate. The boosting column is fixedly connected to the atomizing spray barrel. A liquid inlet hole is provided at the axis of the boosting column. Several boosting blades are extended outward along the axis on the boosting column. A boosting flow channel is formed between the several boosting blades. The boosting plate is fixedly connected to the boosting blades.

[0017] The present invention discloses the following technical effects: the uniformity and stability of the spraying are improved through the flight mechanism, the steering mechanism and the spraying mechanism; the flight mechanism accurately arranges the control components at the axis point of the flight component and fixes them together, thereby improving the flight stability of the entire machine; the coincidence of the center of gravity and the aerodynamic center reduces the risk of dynamic imbalance during flight, while shortening the physical path of the control signal transmission, improving the response efficiency, reducing unnecessary structural weight, and enhancing the rigidity and reliability of the overall structure; the steering mechanism is located below the control component and fixedly connected thereto, while the drive adjustment component and the auxiliary rotating component are also fixedly connected; this sunken layout optimizes the center of gravity distribution of the entire machine, helps to suppress adverse changes in flight attitude, and physically isolates high vibration sources from the steering mechanism, thereby improving the accuracy of direction adjustment, ensuring the direct transmission of force flow, improving the response speed of steering, eliminating action delays, and enhancing resistance to inertial swing of the spray mechanism. The interference ability is improved, the torsional rigidity is improved, and the negative impact on the flight attitude during the steering process is reduced. The structural core of the spray mechanism lies in the fixed connection between the medicine storage component and the auxiliary rotating component, and the direct fixed connection between the medicine storage component and the bottom of the spray component. The medicine storage component is fixed on the steering platform so that the center of gravity of the liquid medicine can move synchronously with the steering action, balancing the dynamic load, reducing the risk of the fuselage overturning due to the centrifugal force of the liquid medicine, and expanding the freedom of spraying, realizing the ability of the spray component to flexibly point in all directions, and adapting to complex and changeable terrain environments. The vertical direct connection between the medicine storage component and the spray component shortens the liquid medicine delivery path to the greatest extent, reduces the pressure loss and flow fluctuation during the flow of the liquid medicine, provides a more stable pressure environment for the nozzle, improves the consistency and uniformity of the atomization, reduces the possibility of abnormally large droplets, and at the same time reduces the wind resistance area of ​​the whole machine, improves the maneuverability of the flight and reduces the hidden dangers of external collision and scratching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0019] Figure 1 An overall schematic diagram of a drone spraying device for uniform spraying provided by an embodiment of the present invention;

[0020] Figure 2 A side view of a steering mechanism in a drone spraying device for uniform spraying provided by an embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of an atomizing spray assembly in a drone spraying device for uniform spraying provided by an embodiment of the present invention;

[0022] Figure 4A cross-sectional view of the atomizing spray assembly in the drone spraying device for uniform spraying provided by an embodiment of the present invention does not show the booster column;

[0023] Figure 5 A side view of a booster column in a drone spraying device for uniform spraying provided by an embodiment of the present invention;

[0024] Figure 6 A side view of an auxiliary spraying assembly in a drone spraying device that sprays evenly, as provided in an embodiment of the present invention.

[0025] In the figure: 1. Flight mechanism; 110. Control component; 120. Flight component; 2. Steering mechanism; 210. Drive adjustment component; 2101. Drive rod; 2102. First drive gear; 2103. Second drive gear; 2104. Third drive gear; 2105. Gear motor; 220. Auxiliary rotating component; 2201. First auxiliary gear; 2202. Second auxiliary gear; 2203. Third auxiliary gear; 2204. First flexion-extension arm; 2205. Second flexion-extension arm; 2206. Third flexion-extension arm; 3. Spray mechanism; 310 , medicine storage component; 320, spray component; 3201, medicine storage box; 3202, medicine spray bracket; 3203, atomizing nozzle; 3204, medicine delivery tube; 3205, steering motor; 3206, steering shaft; 3207, first steering gear; 3208, second steering gear; 3209, atomizing nozzle; 3210, atomizing spray barrel; 3211, guide tube; 3212, guide hole; 3213, guide channel; 3214, booster column; 3215, booster blade; 3216, booster plate; 3217, liquid inlet; 3218, booster flow channel. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0029] In some embodiments of the present application, see Figure 1-6 As shown, a drone spraying device for uniform spraying includes:

[0030] The flying mechanism 1 includes a control component 110 and a flying component 120 . The control component 110 is located at the axis of the flying component 120 . The control component 110 is fixedly connected to the flying component 120 and is used to control the flying component 120 .

[0031] The steering mechanism 2 includes a drive adjustment component 210 and an auxiliary rotating component 220. The drive adjustment component 210 is located below the control component 110 and is fixedly connected to the control component 110. The drive adjustment component 210 is also fixedly connected to the auxiliary rotating component 220. The drive adjustment component 210 is used to adjust the direction of the auxiliary rotating component 220.

[0032] The spray mechanism 3 includes a medicine storage component 310 and a spray component 320 . The medicine storage component 310 is fixedly connected to the auxiliary rotating component 220 , and the spray component 320 is fixedly connected below the medicine storage component 310 .

[0033] Specifically, the control component 110 is used to control the flight of the flying component 120, thereby driving the entire drone to achieve a flight effect, and the steering mechanism 2 is located directly below the control component 110. When the adjustment component 210 is driven to rotate, it drives the auxiliary rotating component 220 to achieve flexion and extension movement, thereby changing the direction of the medicine storage component 310. The spray component 320 is connected directly below the medicine storage component 310, thereby adjusting the direction of the spray component 320.

[0034] As can be understood, the flight mechanism 1 utilizes an axially integrated structure, with the control component 110 fixed to the geometric center of the flight component 120. This enhances the flight attitude stability of the entire aircraft, ensures a high degree of alignment between the center of gravity and the aerodynamic center, and reduces the risk of imbalance during high-speed flight or when encountering airflow disturbances. The fixed connection between the control component 110 and the flight component 120 shortens the transmission path of control commands, improving flight response agility. It also simplifies the overall mechanical structure, reduces redundant weight, and enhances structural integrity. The steering mechanism 2 utilizes a vertically sunken layout, with the drive and adjustment component 210 fixed directly below the control component 110 and forming a fixed connection with the auxiliary rotating component 220. This optimizes the load distribution of the entire aircraft and reduces the nose-down torque during flight. The direct drive of the drive and adjustment component 210 on the auxiliary rotating component 220 eliminates the response delay associated with traditional flexible transmissions, improving the accuracy and timeliness of steering movements. The flexion and extension motions enabled by the auxiliary rotating component 220 provide flexible directional adjustment capabilities for the spray mechanism 3. This fixed linkage structure also enhances the ability to resist the impact of spray inertia and reduces the amplitude of fuselage swing during steering. The structure of the spray mechanism 3 is key to its uniform spraying. The medicine storage component 310 is fixedly connected to the auxiliary rotating component 220, allowing the center of gravity of the liquid medicine load to be adjusted synchronously in real time with the steering action. This reduces the risk of fuselage overturning caused by the centrifugal force of the liquid medicine, provides safety for steering operations, and enables the spray component 320 to have omnidirectional angle adjustment capabilities, achieving spray direction control through the extension and flexion movement of the auxiliary rotating component 220. The vertical direct connection between the medicine storage component 310 and the spray component 320 optimizes the liquid medicine delivery path. This shortens the liquid medicine flow distance, reduces pipeline pressure loss, and provides a more stable operating pressure environment for the nozzle. The stable pressure supply directly improves atomization uniformity and reduces the probability of abnormally large droplets. At the same time, it reduces the overall windward area of ​​the aircraft, enhances flight maneuverability, and reduces the risk of external collisions.

[0035] In some embodiments of the present application, the spray component 320 includes an atomizing spray component and an auxiliary spray component, the auxiliary spray component is fixedly connected to the medicine storage component 310, and a plurality of atomizing spray components are provided on the auxiliary spray component, and the atomizing spray component is rotatably connected to the auxiliary spray component.

[0036] In some embodiments of the present application, see Figure 6As shown, the auxiliary spray assembly includes a medicine storage box 3201, a medicine spray bracket 3202, an atomizing nozzle 3203, a medicine delivery pipe 3204 and a direction-adjusting component. The medicine storage box 3201 is located below the medicine storage component 310, and the medicine spray bracket 3202 is arranged below the medicine storage box 3201. The medicine spray bracket 3202 is a circular structure, and the medicine storage box 3201 is arranged at the axis of the medicine spray bracket 3202. The medicine storage box 3201 is fixedly connected to the medicine spray bracket 3202, and the medicine storage box 3201 is connected to the medicine storage box 3201. A plurality of atomizing nozzles 3203 are arranged on the outer ring of the medicine spray bracket 3202, and the plurality of atomizing nozzles 3203 are connected to the medicine storage box 3201 through the medicine delivery pipe 3204. The direction-adjusting component is located on one side of the atomizing nozzle 3203 and is used to control the steering of the atomizing nozzle 3203.

[0037] In some embodiments of the present application, the steering component includes a steering motor 3205, a steering shaft 3206, a first steering gear 3207 and a second steering gear 3208, the first steering gear 3207 is fixedly connected to the output end of the steering motor 3205, the second steering gear 3208 engages with the first steering gear 3207, the steering shaft 3206 is fixedly connected to the second steering gear 3208, and the steering shaft 3206 is fixedly connected to the atomizing nozzle 3203.

[0038] Specifically, the medicine storage component 310 is connected to the medicine storage box 3201, that is, when spraying starts, the spray liquid flows from the medicine storage component 310 into the medicine storage box 3201, and then flows into the atomizing nozzle 3203 through the medicine delivery tube 3204, and then sprays out. The direction adjustment component can further adjust the direction of the atomizing nozzle 3203. It drives the first steering gear 3207 to rotate through the steering motor 3205, and then drives the second steering gear 3208 to rotate, and then drives the steering shaft 3206 to rotate, thereby realizing the direction adjustment of the atomizing nozzle 3203.

[0039] It is understandable that the annular spray bracket 3202 constitutes the physical basis for uniform spraying. The spray bracket 3202 adopts a circular structure, which is fixedly connected to the medicine storage box 3201 at the axis, and multiple atomizing nozzles 3203 are arranged radially on the outer circle. This enables the atomizing nozzles 3203 to obtain an equidistant distribution characteristic, geometrically ensuring the spatial balance of the atomizing unit. The structure in which the medicine storage box 3201 is located in the center of the bracket shortens the path length of the liquid medicine to each nozzle, reduces the pressure attenuation of the liquid medicine in the pipeline, and provides a stable and consistent initial pressure environment for all atomizing nozzles 3203. Pressure stability is directly converted into improved atomization uniformity, reducing the probability of large droplets. The symmetrical structure of the annular bracket also optimizes the load distribution and reduces the risk of bracket deformation due to unilateral weight. The independent steering mechanism 2 gives each atomizing nozzle 3203 precise directional capability. The steering mechanism achieves nozzle angle adjustment through a gear-shaft transmission: the steering motor 3205 drives the first steering gear 3207 to rotate, and the meshed second steering gear 3208 transmits this motion to the steering shaft 3206 that secures the atomizing nozzle 3203. First, the gear meshing structure eliminates the backlash error of traditional linkage mechanisms, ensuring that the angle command corresponds to the nozzle orientation. Second, the direct connection between the steering shaft 3206 and the nozzle minimizes the power transmission path, improving response sensitivity. Finally, the independent steering mechanism for each nozzle enables the device to adjust the spray angle of a single point in real time based on changes in plant density and wind direction, forming an adaptive coverage network. This micro-control capability reduces spray loss in complex canopy structures. When operating on irregular terrain such as slopes and orchards, the multi-stage steering function complements each other: the auxiliary rotating component 220 adjusts the overall orientation of the spray mechanism 3 (macro-orientation), while the steering mechanism fine-tunes the spray angle of each nozzle (micro-calibration). This dual control mechanism compensates for coverage deviations caused by flight attitude changes, ensuring the spray always strikes the leaves perpendicularly. The symmetrical layout of the ring bracket, combined with the distributed spray tanks (3201), minimizes the impact of spray sloshing on the aircraft's balance. The self-locking nature of the gear drive also maintains nozzle angle stability in vibrating environments, preventing accidental misalignment during operation.

[0040] In some embodiments of the present application, see Figure 2As shown, the drive adjustment component 210 includes a drive rod 2101, a first drive gear 2102, a second drive gear 2103, a third drive gear 2104 and a gear motor 2105. The drive rod 2101 is fixedly connected to the control component 110. The drive rod 2101 is connected to an auxiliary rotating component 220. The first drive gear 2102, the second drive gear 2103 and the third drive gear 2104 are all fixedly connected to the output end of the gear motor 2105, and the gear motor 2105 is provided with multiple gears. The first drive gear 2102, the second drive gear 2103 and the third drive gear 2104 engage with the auxiliary rotating component 220.

[0041] In some embodiments of the present application, the auxiliary rotating component 220 includes a first auxiliary gear 2201, a second auxiliary gear 2202, a third auxiliary gear 2203 and a flexion and extension assembly, the first auxiliary gear 2201, the second auxiliary gear 2202 and the third auxiliary gear 2203 are all rotatably sleeved on the driving rod 2101, and the first auxiliary gear 2201, the second auxiliary gear 2202 and the third auxiliary gear 2203 are respectively engaged with the first driving gear 2102, the second driving gear 2103 and the third driving gear 2104, and the flexion and extension assembly is fixedly connected to the medicine storage component 310.

[0042] In some embodiments of the present application, the flexion and extension assembly includes a first flexion and extension arm 2204, a second flexion and extension arm 2205 and a third flexion and extension arm 2206, the first flexion and extension arm 2204, the second flexion and extension arm 2205 and the third flexion and extension arm 2206 are all fixedly connected to the driving rod 2101, and the first flexion and extension arm 2204, the second flexion and extension arm 2205 and the third flexion and extension arm 2206 are respectively controlled to flex and extend by the first auxiliary gear 2201, the second auxiliary gear 2202 and the third auxiliary gear 2203.

[0043] Specifically, the steering shaft 3206 is fixedly connected to the bottom wall of the control mechanism, and the first auxiliary gear 2201, the second auxiliary gear 2202 and the third auxiliary gear 2203 are sequentially arranged on the steering shaft 3206 from top to bottom. The first auxiliary gear 2201, the second auxiliary gear 2202 and the third auxiliary gear 2203 are respectively meshed with the first drive gear 2102, the second drive gear 2103 and the third drive gear 2104, and the first drive gear 2102, the second drive gear 2103 and the third drive gear 2104 are respectively meshed with each other. It is connected to a drive motor, and the first auxiliary gear 2201, the second auxiliary gear 2202 and the third auxiliary gear 2203 are used to control the expansion amplitude of the first flexion and extension arm 2204, the second flexion and extension arm 2205 and the third flexion and extension arm 2206, that is, when different drive motors rotate, the first drive gear 2102 and / or the second drive gear 2103 and / or the third drive gear 2104 rotate, thereby driving the first flexion and extension arm 2204, the second flexion and extension arm 2205 and the third flexion and extension arm 2206 to move, thereby driving the medicine storage mechanism to change its direction.

[0044] As can be understood, the drive rod 2101 serves as the core load-bearing structure, rigidly connected to the control unit 110 at its upper end and connected in series to three independent gear units at its lower end. Each unit consists of a drive gear (active pulley) and an auxiliary gear (driven pulley), driven by a dedicated gear motor 2105. This achieves three key optimizations: First, the short-shaft meshing design of the drive and auxiliary gears reduces energy loss in the transmission chain; second, the distributed layout of multiple motors avoids single-point power overload, extending mechanical life; and finally, the drive rod 2101 acts as a carrier, directly transmitting the reference coordinate system of the flight control unit 110 to the steering mechanism 2, eliminating positional deviations in the intermediate links. The three-dimensional flexion-extension arm coordination mechanism enables precise vector steering. The first, second, and third flexion-extension arms 2204, 2205, and 2206 are each rigidly connected to a corresponding auxiliary gear, forming three parallel motion units. Each flexion-extension arm provides both radial support and axial extension: When the auxiliary gear rotates, the internal threads of the gear convert the rotational motion into linear displacement of the flexion-extension arm. The three arms are symmetrically distributed around the circumference. By independently controlling the extension and retraction of each arm, a programmable support plane is formed at the bottom of the drug storage component 310. This enables the drug storage mechanism to adjust in multiple degrees of freedom, including pitch, roll, and yaw. Its steering accuracy is directly determined by the gear meshing tolerance and is far superior to that of traditional single-axis hinge structures. When the drone operates on sloped terrain, the center of gravity of the liquid medicine in the drug storage component 310 shifts. In response, the three flexion-extension arms actively adjust the inclination of the support plane by differentially extending and retracting: the low-side flexion-extension arm extends to provide additional support, while the high-side flexion-extension arm retracts to free up space, ensuring that the gravity vector of the liquid medicine remains perpendicular to the adjusted support plane. This reduces the impact of liquid medicine sway on the aircraft's attitude and suppresses steering hysteresis caused by inertial loads. The self-locking nature of the gear transmission also maintains the current configuration during power outages, preventing accidental resetting. The three gear-flexion-extension units utilize a completely symmetrical, independent structure: the first drive gear 2102 operates only the first flexion-extension arm 2204 and has no mechanical coupling with other units. Drive rod 2101 serves as the central load-bearing column, transmitting the load of flight mechanism 1 directly to the flexion-extension arm support points, creating the shortest force flow path. The triangular arrangement of the three flexion-extension arms creates a stable support configuration, and the spacing between the support points is adjustable via telescoping, enhancing torsional rigidity. The sleeve connection between the auxiliary gear and drive rod 2101 utilizes preloaded bearings, ensuring rotational freedom while suppressing radial movement. A special wear-resistant coating is applied to the gear meshing surfaces to reduce tooth wear in the corrosive environment of pesticides.

[0045] In some embodiments of the present application, see Figure 3-4As shown, the atomizing spray assembly includes an atomizing nozzle 3209, an atomizing spray barrel 3210, a guide tube 3211, a guide hole 3212 and a guide channel 3213. The atomizing nozzle 3209 is conical, and the atomizing nozzle 3209 is fixedly connected to the atomizing spray barrel 3210. The atomizing spray barrel 3210 is a hollow structure, and a guide tube 3211 is fixedly connected to the interior thereof. A plurality of guide holes 3212 are provided on the guide tube 3211. A guide channel 3213 is left between the guide tube 3211 and the inner wall of the atomizing spray barrel 3210, and the guide channel 3213 is connected to the atomizing nozzle 3209.

[0046] In some embodiments of the present application, see Figure 5 As shown, Figure 5 The boost plate 3216 is not shown because the boost plate 3216 is fixedly connected to the boost blade 3215 and will block the internal structure. Figure 5 The boost plate 3216 is not shown. The specific connection structure between the boost plate 3216 and the boost blade 3215 can be referred to Figure 3 As shown, the atomizing spray assembly also includes a boosting column 3214, a boosting blade 3215 and a boosting plate 3216. The boosting column 3214 is fixedly connected to the atomizing spray barrel 3210. A liquid inlet 3217 is provided at the axis of the boosting column 3214. A plurality of boosting blades 3215 are extended outwardly along the axis on the boosting column 3214. A boosting flow channel 3218 is formed between the plurality of boosting blades 3215. The boosting plate 3216 is fixedly connected to the boosting blades 3215.

[0047] Specifically, when the spray liquid enters the boost column 3214 from the drug delivery tube 3204, and then flows into the boost blade 3215 through the liquid inlet hole 3217, due to the obstruction of the boost plate 3216, the spray liquid can only flow out into the atomizing spray barrel 3210 through the boost flow channel 3218, and the atomizing spray barrel 3210 is provided with a guide tube 3211. The spray liquid flows into the guide tube 3211, and then flows into the guide channel 3213 through the guide hole 3212, and then flows into the conical atomizing nozzle 3209 through the guide channel 3213, and then is sprayed out.

[0048] It is understandable that the spirally extending boost blades 3215 within the boost column 3214 guide the liquid medicine into the rotating flow channel. Under the blocking effect of the boost plate 3216, the liquid medicine is forced to form a high-speed swirl, converting the kinetic energy of the fluid, enhancing the intermolecular shear effect while maintaining the flow stability, and reserving a uniform energy base for subsequent atomization. The coordinated structure of the guide tube 3211 and the atomizing spray barrel 3210 constructs a precise flow channel network. After being screened and diverted by the guide holes 3212, the liquid medicine enters the annular guide channel 3213, forming a laminar flow state to eliminate radial velocity differences, and finally spreads to the inner wall of the conical nozzle in the form of a uniform liquid film, suppressing turbulent disturbances and ensuring the homogenization of the liquid medicine before the critical point of atomization. The entire component adopts a rigid closed structure to improve reliability. The integrated connection of the boost column 3214, spray barrel, guide tube 3211 and nozzle eliminates the risk of leakage at the pipeline interface. The hardened surface treatment of the spiral blades and guide holes 3212 enhances corrosion resistance and wear resistance. The swirl's continuous flushing of the inner wall of the flow channel also imparts self-cleaning capabilities, while the modular design of the guide tube 3211 supports rapid replacement and maintenance. The unique swirl structure exhibits excellent environmental adaptability, and its shear-thinning effect is compatible with liquids of varying viscosities. The inner cavity of the guide tube 3211 buffers pressure fluctuations, ensuring that upstream instabilities do not affect atomization quality. The self-balancing characteristics of the rotating fluid enable the component to maintain stable performance in any installation orientation. Through swirl kinetic energy conversion and laminar flow path optimization, droplet uniformity, impurity tolerance, and adaptability to a wide range of operating conditions are improved, while the risks of flow turbulence, nozzle clogging, and maintenance complexity are reduced.

[0049] In summary, the beneficial effects of the present invention are: the uniformity and stability of the spraying are improved through the flight mechanism 1, the steering mechanism 2 and the spraying mechanism 3; the flight mechanism 1 accurately arranges the control component 110 at the axis point of the flight component 120 and fixes it, thereby improving the flight stability of the entire machine; the coincidence of the center of gravity and the aerodynamic center reduces the risk of dynamic imbalance during flight, while shortening the physical path of the control signal transmission, improving the response efficiency, reducing unnecessary structural weight, and enhancing the rigidity and reliability of the overall structure; the steering mechanism 2 is located below the control component 110 and fixedly connected thereto, while the drive adjustment component 210 and the auxiliary rotating component 220 are also fixedly connected; this sunken layout optimizes the center of gravity distribution of the entire machine, helps to suppress adverse changes in flight attitude, and physically isolates high vibration sources from the steering mechanism 2, thereby improving the accuracy of direction adjustment, ensuring the direct transmission of force flow, improving the response speed of steering, eliminating action delays, and enhancing resistance to inertial swing of the spray mechanism 3. The interference capability is improved, the torsional rigidity is improved, and the negative impact on the flight attitude during the steering process is reduced. The structural core of the spray mechanism 3 lies in the fixed connection between the medicine storage component 310 and the auxiliary rotating component 220, and the direct fixed connection between the medicine storage component 310 and the bottom of the spray component 320. The medicine storage component 310 is fixed on the steering platform so that the center of gravity of the liquid medicine can move synchronously with the steering action, balancing the dynamic load, reducing the risk of the fuselage overturning due to the centrifugal force of the liquid medicine, and expanding the freedom of spraying, realizing the omnidirectional and flexible pointing ability of the spray component 320, adapting to complex and changeable terrain environments, and the vertical direct connection between the medicine storage component 310 and the spray component 320 shortens the liquid medicine delivery path to the greatest extent, reduces the pressure loss and flow fluctuation during the flow of the liquid medicine, provides a more stable pressure environment for the nozzle, improves the consistency and uniformity of the atomization, reduces the possibility of abnormally large droplets, and at the same time reduces the wind resistance area of ​​the whole machine, improves the maneuverability of the flight and reduces the hidden dangers of external collision and scratching.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A drone spraying device with uniform spraying, characterized in that: include: A flying mechanism (1) comprises a control component (110) and a flying component (120), wherein the control component (110) is located at the axis point of the flying component (120), the control component (110) is fixedly connected to the flying component (120), and the control component (110) is used to control the flying component (120); A steering mechanism (2) comprising a drive adjustment component (210) and an auxiliary rotation component (220), wherein the drive adjustment component (210) is located below the control component (110) and is fixedly connected to the control component (110), and the drive adjustment component (210) is also fixedly connected to the auxiliary rotation component (220), and the drive adjustment component (210) is used to adjust the orientation of the auxiliary rotation component (220); The spray mechanism (3) comprises a medicine storage component (310) and a spray component (320), wherein the medicine storage component (310) is fixedly connected to the auxiliary rotating component (220), and the spray component (320) is fixedly connected below the medicine storage component (310).

2. The drone spraying device with uniform spraying according to claim 1 is characterized in that: The spray component (320) includes an atomizing spray component and an auxiliary spray component, the auxiliary spray component is fixedly connected to the medicine storage component (310), a plurality of atomizing spray components are provided on the auxiliary spray component, and the atomizing spray component is rotatably connected to the auxiliary spray component.

3. The drone spraying device with uniform spraying according to claim 2, characterized in that: The auxiliary medicine spraying assembly comprises a medicine storage box (3201), a medicine spraying bracket (3202), an atomizing nozzle (3203), a medicine delivery tube (3204) and a direction adjustment member. The medicine storage box (3201) is located below the medicine storage component (310). The medicine spraying bracket (3202) is provided below the medicine storage box (3201). The medicine spraying bracket (3202) is a circular structure. The medicine storage box (3201) is provided at the axis of the medicine spraying bracket (3202). The medicine box (3201) is fixedly connected to the medicine spraying bracket (3202), and the medicine storage box (3201) is connected to the medicine storage box (3201). The outer ring of the medicine spraying bracket (3202) is provided with a plurality of atomizing nozzles (3203). The plurality of atomizing nozzles (3203) are connected to the medicine storage box (3201) through the medicine delivery tube (3204). The direction adjustment member is located on one side of the atomizing nozzle (3203) and is used to control the direction of the atomizing nozzle (3203).

4. The drone spraying device for uniform spraying according to claim 3, characterized in that: The steering member comprises a steering motor (3205), a steering shaft (3206), a first steering gear (3207) and a second steering gear (3208); the first steering gear (3207) is fixedly connected to the output end of the steering motor (3205); the second steering gear (3208) is engaged with the first steering gear (3207); the steering shaft (3206) is fixedly connected to the second steering gear (3208); and the steering shaft (3206) is fixedly connected to the atomizing nozzle (3203).

5. The drone spraying device for uniform spraying according to claim 4, characterized in that: The driving adjustment component (210) comprises a driving rod (2101), a first driving gear (2102), a second driving gear (2103), a third driving gear (2104) and a gear motor (2105). The driving rod (2101) is fixedly connected to the control component (110). An auxiliary rotating component (220) is connected to the driving rod (2101). The first driving gear (2102), the second driving gear (2103) and the third driving gear (2104) are all fixedly connected to the output end of the gear motor (2105). The gear motor (2105) is provided with a plurality of gears. The first driving gear (2102), the second driving gear (2103) and the third driving gear (2104) are engaged with the auxiliary rotating component (220).

6. The drone spraying device for uniform spraying according to claim 5, characterized in that: The auxiliary rotating component (220) includes a first auxiliary gear (2201), a second auxiliary gear (2202), a third auxiliary gear (2203) and a flexion-extension assembly. The first auxiliary gear (2201), the second auxiliary gear (2202) and the third auxiliary gear (2203) are all rotatably sleeved on the driving rod (2101), and the first auxiliary gear (2201), the second auxiliary gear (2202) and the third auxiliary gear (2203) are respectively engaged with the first driving gear (2102), the second driving gear (2103) and the third driving gear (2104). The flexion-extension assembly is fixedly connected to the medicine storage component (310).

7. The drone spraying device for uniform spraying according to claim 6, characterized in that: The direction-adjusting member flexion and extension assembly comprises a first flexion and extension arm (2204), a second flexion and extension arm (2205), and a third flexion and extension arm (2206); the first flexion and extension arm (2204), the second flexion and extension arm (2205), and the third flexion and extension arm (2206) are all fixedly connected to the driving rod (2101); and the first flexion and extension arm (2204), the second flexion and extension arm (2205), and the third flexion and extension arm (2206) are controlled to flex and extend via the first auxiliary gear (2201), the second auxiliary gear (2202), and the third auxiliary gear (2203), respectively.

8. The drone spraying device for uniform spraying according to claim 7, characterized in that: The atomizing spray assembly comprises an atomizing nozzle (3209), an atomizing spray barrel (3210), a guide tube (3211), a guide hole (3212) and a guide channel (3213). The atomizing nozzle (3209) is conical and fixedly connected to the atomizing spray barrel (3210). The atomizing spray barrel (3210) is a hollow structure, and a guide tube (3211) is fixedly connected to the interior thereof. A plurality of guide holes (3212) are provided on the guide tube (3211). A guide channel (3213) is left between the guide tube (3211) and the inner wall of the atomizing spray barrel (3210), and the guide channel (3213) is connected to the atomizing nozzle (3209).

9. The drone spraying device for uniform spraying according to claim 8, characterized in that: The atomizing spray assembly further comprises a boosting column (3214), boosting blades (3215) and a boosting plate (3216); the boosting column (3214) is fixedly connected to the atomizing spray barrel (3210); a liquid inlet (3217) is provided at the axis of the boosting column (3214); a plurality of boosting blades (3215) are provided on the boosting column (3214) and extend outwardly in a rotational manner along the axis; a boosting flow channel (3218) is formed between the plurality of boosting blades (3215); and the boosting plate (3216) is fixedly connected to the boosting blades (3215).

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