A new type of airborne target spraying device for forestry

Abstract

This utility model discloses a novel airborne target spraying device for forestry, comprising a connecting pipe, a spraying device installed on one side of the connecting pipe, and a speed regulating device connected to the connecting pipe. The speed regulating device includes a fixed pipe, a connecting pipe, a movable frame, a rotating sleeve, a mating rod, a mating sleeve, a movable block, a guide groove, and a guide block. The movable frame is connected to one end of the mating rod, the mating sleeve is connected to the inner side of the rotating sleeve, the guide groove is opened on the movable frame, and the guide block is set in the movable block. A limiting mechanism is installed on the outside of the connecting pipe, the limiting mechanism including a control plate, a limiting plate, a connecting plate, a limiting sleeve, a cylindrical block, a limiting spring, a limiting block, and a control groove. The limiting plate is installed on one side of the connecting plate, the cylindrical block is installed on the outside of the connecting pipe, the limiting spring is connected to two adjacent limiting blocks, and the control groove is opened on the control plate. This utility model is not limited by terrain and ensures the structural stability after adjustment while flexibly adjusting the speed of the pesticide delivery, ensuring the stable operation of the spraying work.

Description

Technical Field

[0001] This utility model relates to the field of airborne target spraying technology for forestry, and more specifically, it relates to a novel airborne target spraying device for forestry. Background Technology

[0002] In the field of modern forestry pest and disease control, airborne targeted spraying devices, as key plant protection equipment, undertake core tasks such as forest resource protection, pest and disease control, and vegetation conservation. Their performance stability and environmental adaptability directly affect the effectiveness of control work and ecological environmental protection. However, the airborne targeted spraying devices for forestry currently on the market have significant technical defects in terms of equipment mobility, flow rate control system, and structural stability.

[0003] The primary problem lies in the limited ground mobility of the equipment. Current technologies mostly rely on mobile vehicles equipped with spraying devices for spraying operations. However, in actual forestry pest control work, due to the varied and complex terrain of forest areas, which often includes natural obstacles such as steep slopes, gullies, and streams, ground vehicles cannot fully cover all areas requiring pest control. This is especially true in mountainous forest areas, hilly areas, or densely vegetated areas, where ground spraying vehicles face difficulties in movement, resulting in low operational efficiency and even complete inaccessibility to some areas. This leads to blind spots and dead ends in pest control. Such terrain limitations not only significantly reduce the coverage and effectiveness of pest control work but also prolong the operation cycle and increase manpower and material costs. This is particularly disadvantageous in the face of emergency pest control tasks, potentially causing the best time for control to be missed, leading to the spread of pests and diseases and causing irreparable damage to forest resources.

[0004] Secondly, existing spraying devices have serious technical defects in their liquid delivery systems. They typically use simple, fixed pipelines to deliver the liquid, failing to flexibly adjust the flow rate according to actual needs. In forestry pest and disease control, different tree species, vegetation at different growth stages, different types of pests and diseases, and different seasons and weather conditions all have varying requirements for spraying volume and intensity. Fixed-flow-rate spraying systems cannot cope with these complex and ever-changing needs. If the flow rate is set too high, it will not only lead to excessive use and waste of liquid, increasing control costs, but may also cause excessive liquid deposition, causing unnecessary pollution and harm to the ecological environment and non-target organisms. If the flow rate is set too low, it will fail to achieve effective control, and pests and diseases will not be controlled in a timely manner, potentially leading to a wider spread of the disaster. This functional limitation severely restricts the applicability and efficiency of spraying devices in complex and ever-changing forestry environments.

[0005] Furthermore, while some more advanced spraying equipment has achieved flexible adjustment of the pesticide delivery speed through the cooperation of certain components to address the issue of fixed flow rates, these adjustable flow rate systems often suffer from key defects such as simple structure and imperfect fixing mechanisms. They struggle to maintain long-term stable and reliable operation under complex environments of prolonged, high-intensity work. In actual forestry spraying operations, airborne equipment typically needs to withstand strong vibrations, airflow disturbances, and frequent start-stop operations. Simultaneously, the pesticide system itself experiences complex fluid dynamic phenomena such as pressure fluctuations and liquid impacts. Under the combined effects of these complex dynamic environments, simple flow rate adjustment structures are prone to component loosening and displacement. Flow rate drift can cause unpredictable drift in the carefully adjusted flow control device during use. This flow rate drift not only leads to unstable spraying effects, affecting the control efficacy and the uniformity of pesticide distribution, but may also cause excessive or insufficient pesticide in local areas, wasting resources and affecting the control effect. More seriously, the instability of the pesticide system may also lead to large and small pressure changes, causing additional wear and tear on the nozzles and pipeline systems, shortening the service life of the equipment, increasing maintenance costs and the risk of failure. These technical defects greatly limit the application value of adjustable flow rate systems in high-end forestry airborne spraying equipment and have become important factors affecting the safety, reliability and efficiency of forestry pest and disease control. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a new type of airborne target spraying device for forestry, so as to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: A novel airborne target spraying device for forestry, comprising a connecting pipe, a spraying device installed on one side of the connecting pipe, and a speed regulating device connected to the connecting pipe. The speed regulating device includes a fixed pipe, a connecting pipe, a movable frame, a rotating sleeve, a mating rod, a mating sleeve, a movable block, a guide groove, and a guide block. The fixed pipe is fixedly connected to one end of the connecting pipe, the movable frame is fixedly connected to one end of the mating rod, the outer wall of the mating rod is movably connected to the inner wall of the mating sleeve via threads, the two ends of the rotating sleeve are rotatably connected to the connecting pipe and the fixed pipe respectively, the mating sleeve is fixedly connected to the inner side of the rotating sleeve, and the movable block is movably disposed inside the fixed pipe. A guide groove is formed on the movable frame. The guide block is fixedly set in the movable block and slides in the guide groove. A limiting mechanism is installed on the outside of the connecting pipe. The limiting mechanism includes a control plate, a limit plate, a connecting plate, a limiting sleeve, a cylindrical block, a limiting spring, a limiting block, and a control groove. The control plate is rotatably installed on the outside of the connecting pipe. Three limit plates are fixedly installed on one side of the connecting plate. The connecting plate is fixedly installed on one side of the limiting sleeve. The limiting sleeve is slidably installed on the outside of the connecting pipe. Multiple cylindrical blocks are fixedly installed on the outside of the connecting pipe. Multiple limiting blocks are movably set on one side of the rotating sleeve. The two ends of the limiting spring are respectively connected to two adjacent limiting blocks. The control groove is formed on the control plate.

[0010] The present invention is further configured such that the spraying device includes a nozzle, a delivery pipe, a delivery pump, a storage chamber, and a drone. Multiple nozzles are connected below the connecting pipe. The input end of the delivery pump is connected to the storage chamber through the delivery pipe, and the output end of the delivery pump is connected to the connecting pipe through the delivery pipe. The storage chamber is detachably installed below the drone.

[0011] The present invention is further configured such that a plurality of limiting rails are fixedly provided on one side of the rotating sleeve, and a limiting groove is provided in the limiting block. The limiting block is slidably installed on the outside of the limiting rails through the limiting groove, thereby realizing the guiding and limiting of the limiting block and ensuring the stable movement of the limiting block.

[0012] The present invention is further configured such that a limiting wheel is rotatably provided on one side of the limiting block, and the limiting wheel is engaged between the two cylindrical blocks, thereby forming a physical lock between the limiting wheel and the cylindrical blocks, ensuring smooth operation and reducing moving friction.

[0013] The present invention is further configured such that a push spring is connected to one side of the limiting sleeve, and a thrust bearing is connected to the other end of the push spring. The thrust bearing is detachably installed on one side of the control board, ensuring that the limiting sleeve can be automatically reset.

[0014] The present invention is further configured such that a movable groove is provided on one side of the movable block, and a fixed block is fixedly provided inside the fixed tube. The fixed block is located in the movable groove, thereby realizing the guiding and limiting of the movable block and ensuring the coordination between the components.

[0015] The present invention is further configured such that the movable block has multiple movable holes.

[0016] The present invention is further configured such that both the limiting groove and the limiting rail are T-shaped structures to prevent jamming caused by deviation during the movement of the limiting block.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a novel airborne target spraying device for forestry, which has the following beneficial effects:

[0019] 1. The combination of spraying equipment and drones significantly solves the problem of limited mobility of traditional ground spraying equipment in complex terrain. The integrated design of the device, consisting of nozzles, delivery pipes, delivery pumps, storage tanks, and drones, allows the equipment to easily fly over natural obstacles such as steep slopes, gullies, and dense vegetation, achieving comprehensive coverage of areas that were previously difficult to reach. This eliminates blind spots and dead zones in pest control. The storage tank is detachably installed under the drone for easy addition and replacement of pesticide solution. Multiple nozzles are connected to the lower part of the connecting pipe to ensure that the pesticide solution can be atomized and sprayed onto the target area, greatly improving operational efficiency and coverage, shortening the control cycle, reducing manpower and material costs, and providing a reliable guarantee for the timely control of forest pests and diseases.

[0020] 2. The speed control device is ingeniously composed of a fixed pipe, connecting pipe, movable frame, rotating sleeve, mating rod, mating sleeve, movable block, guide groove, and guide block. It solves the technical deficiency of traditional spraying equipment that cannot adjust the flow rate of the pesticide solution according to actual needs. The rotating sleeve drives the threaded connection between the mating sleeve and the mating rod. Under the precise guidance of the guide groove and guide block, the movable frame drives the movable block to move controllably inside the fixed pipe. The displacement of multiple movable holes on the movable block, as well as the diffusion displacement of the movable block, changes the flow area inside the fixed pipe, achieving precise control of the pesticide solution flow rate. This design allows operators to flexibly adjust the spraying intensity according to different tree species, different growth stages of vegetation, different types of pests and diseases, and different seasons and weather conditions. This avoids resource waste and environmental pollution caused by excessive pesticide use, while ensuring sufficient spray volume to achieve the ideal control effect, significantly improving the applicability and work efficiency of the device in complex and changing forestry environments.

[0021] 3. The limiting mechanism consists of a control plate, a limit plate, a connecting plate, a limiting sleeve, cylindrical blocks, a limiting spring, and a control groove. It solves the problem of insufficient structural stability in existing adjustable flow rate systems. This mechanism forms a T-shaped sliding fit structure through the limiting groove on the limiting block and the limiting rail fixed on one side of the rotating sleeve. The limiting wheel on one side of the limiting block can accurately engage between adjacent cylindrical blocks, forming the first level of locking. The inner wall of the limiting sleeve limits the outer wall of the limiting wheel, forming the second level of locking. The control plate, through the cooperation of the control groove and the limit plate, combined with the action of the limiting sleeve and the push spring, constitutes the third level of locking. The fixed mechanism, with its multi-locking design, ensures that the speed regulation system can be firmly locked in the preset position after adjustment. Even under the strong vibration and impact generated by the high-speed flight of the drone, airflow disturbances, and frequent start-stop operations, as well as the influence of complex fluid dynamics phenomena such as pressure fluctuations and liquid impacts within the pesticide system, it can still maintain a stable and reliable operating state. This effectively prevents problems such as component loosening, connection failure, and flow rate drift, ensuring stable and uniform spraying effect, extending equipment lifespan, reducing maintenance costs and failure risks, and providing a safe and reliable technical guarantee for forestry pest and disease control. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a novel airborne target spraying device for forestry in this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure from a second perspective in this utility model;

[0024] Figure 3 This is an exploded structural diagram of the speed regulating device and the limiting mechanism in this utility model;

[0025] Figure 4 This is an exploded cross-sectional view of the rotating sleeve, movable frame, and movable block in this utility model.

[0026] Figure 5 This is a cross-sectional structural diagram of the movable frame, movable block, and fixed tube in this utility model.

[0027] In the diagram: 1. Connecting pipe; 2. Fixed pipe; 3. Connecting pipe; 4. Movable frame; 5. Rotating sleeve; 6. Matching rod; 7. Matching sleeve; 8. Movable block; 9. Guide groove; 10. Guide block; 11. Control plate; 12. Limiting plate; 13. Connecting plate; 14. Limiting sleeve; 15. Cylindrical block; 16. Limiting spring; 17. Limiting block; 18. Control groove; 19. Nozzle; 20. Delivery pipe; 21. Delivery pump; 22. Storage bin; 23. UAV; 24. Limiting rail; 25. Limiting groove; 26. Limiting wheel; 27. Push spring; 28. Thrust bearing; 29. ​​Movable groove; 30. Fixed block; 31. Movable hole. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5 A novel airborne target spraying device for forestry includes a connecting pipe 1, with a spraying device installed on one side of the connecting pipe 1. A speed regulating device is connected to the connecting pipe 1. The speed regulating device includes a fixed pipe 2, a connecting pipe 3, a movable frame 4, a rotating sleeve 5, a mating rod 6, a mating sleeve 7, a movable block 8, a guide groove 9, and a guide block 10. The fixed pipe 2 is fixedly connected to one end of the connecting pipe 1, and the movable frame 4 is fixedly connected to one end of the mating rod 6. The outer wall of the mating rod 6 is movably connected to the inner wall of the mating sleeve 7 via threads. The two ends of the rotating sleeve 5 are rotatably connected to the connecting pipe 3 and the fixed pipe 2, respectively. The mating sleeve 7 is fixedly connected to the inner side of the rotating sleeve 5. The movable block 8 is movably disposed inside the fixed pipe 2. The guide groove 9 is formed on the movable frame 4, and the guide block 10 is fixedly disposed. In the movable block 8, and the guide block 10 slides in the guide groove 9, a limiting mechanism is installed on the outside of the connecting pipe 3. The limiting mechanism includes a control plate 11, a limit plate 12, a connecting plate 13, a limiting sleeve 14, a cylindrical block 15, a limiting spring 16, a limiting block 17, and a control groove 18. The control plate 11 is rotatably installed on the outside of the connecting pipe 3. Three limit plates 12 are fixedly installed on one side of the connecting plate 13. The connecting plate 13 is fixedly installed on one side of the limiting sleeve 14. The limiting sleeve 14 is slidably installed on the outside of the connecting pipe 3. Multiple cylindrical blocks 15 are fixedly installed on the outside of the connecting pipe 3. Multiple limiting blocks 17 are movably arranged on one side of the rotating sleeve 5. The two ends of the limiting spring 16 are respectively connected to two adjacent limiting blocks 17. The control groove 18 is opened on the control plate 11.

[0032] The spraying device includes a nozzle 19, a delivery pipe 20, a delivery pump 21, a storage chamber 22, and a drone 23. Multiple nozzles 19 are connected below the connecting pipe 1. The input end of the delivery pump 21 is connected to the storage chamber 22 through the delivery pipe 20, and the output end of the delivery pump 21 is connected to the connecting pipe 3 through the delivery pipe 20. The storage chamber 22 is detachably installed below the drone 23.

[0033] In this embodiment, when the device is needed, the mixed pesticide solution is first added into the storage chamber 22, the delivery flow rate is adjusted, and then the drone 23 is turned on, causing it to rise and take off. The drone 23 is a heavy-duty drone, which will then lift the nozzles 19 and the storage chamber 22 and move them. Once it reaches the corresponding tree, the delivery pump 21 is turned on remotely via an external device. The delivery pump 21 extracts the pesticide solution stored in the storage chamber 22 through the delivery pipe 20 connected to the input end, and then delivers the extracted pesticide solution to the connecting pipe 3 through the delivery pipe 20 connected to the output end of the delivery pump 21. Then, it is delivered to the connecting pipe 1 through the fixed pipe 2, and then distributed to each nozzle 19 through the connecting pipe 1. The pesticide solution is then atomized and sprayed out through the nozzles 19 to achieve the pesticide treatment work.

[0034] Please see Figures 3-5 As a further implementation of the overall equipment: a plurality of limiting rails 24 are fixedly provided on one side of the rotating sleeve 5, and a limiting groove 25 is provided in the limiting block 17. The limiting block 17 is slidably installed on the outside of the limiting rails 24 through the limiting groove 25.

[0035] A limiting wheel 26 is provided on one side of the limiting block 17 for rotation, and the limiting wheel 26 is engaged between the two cylindrical blocks 15.

[0036] A push spring 27 is connected to one side of the limiting sleeve 14, and a thrust bearing 28 is connected to the other end of the push spring 27. The thrust bearing 28 is detachably installed on one side of the control panel 11.

[0037] A movable groove 29 is provided on one side of the movable block 8, and a fixed block 30 is fixedly provided inside the fixed tube 2, with the fixed block 30 located in the movable groove 29.

[0038] Multiple movable holes 31 are provided on the movable block 8.

[0039] Both the limiting groove 25 and the limiting rail 24 are T-shaped structures.

[0040] More specifically, when the flow rate of the liquid medicine needs to be adjusted, firstly, the control plate 11 is rotated. The control plate 11 drives the thrust bearing 28 and the control groove 18 to rotate, causing the control groove 18 to rotate to the position corresponding to the limit plate 12. Then, the limiting sleeve 14 is pushed, causing the connecting plate 13 and the limit plate 12 to gradually slide through the control groove 18. The limiting sleeve 14 and the control plate 11 cooperate to compress the push spring 27. When the push spring 27 is compressed to its limit, the limit plate 12 closest to the limiting sleeve 14 just passes through the control groove 18 and moves to the other side of the control plate 11. Then, the control plate 11 is rotated again, causing the control plate 11 to drive the control groove 18 and the thrust bearing 28 to rotate, causing the control groove 18 to rotate to a position that is not in contact with the limit plate 12. The corresponding position of plate 12, and then the connecting plate 13, together with the limiting plate 12 closest to the limiting sleeve 14, limits the limiting sleeve 14 to one side of the control plate 11, so that the limiting sleeve 14 no longer limits the outer wall of the limiting wheel 26. Then the control sleeve is rotated in the forward direction. The control sleeve drives the limiting block 17 to rotate in the forward direction through the limiting rail 24 and the limiting groove 25. Then the limiting block 17 will drive the limiting wheel 26 to roll out between the two cylindrical blocks 15, and the limiting wheel 26 will drive the limiting block 17 to slide outward along the limiting rail 24 and the limiting groove 25, and cause the limiting block 17 to drive the limiting spring 16 to stretch outward. At the same time, the rotating sleeve 5 will drive the inner mating sleeve 7 to rotate in the forward direction. Since the mating sleeve 7 and the mating rod 6 are connected by threads, and the movable frame 4 receives The guide block 10 and guide groove 9 limit the movement of the movable frame 4 and the mating rod 6, preventing them from rotating. The mating rod 6 then drives the movable frame 4 to slide, which in turn moves the movable groove 29, causing the movable block 8 to slide within the inclined movable groove 29. This causes the movable block 8 to simultaneously move the movable groove 29 outwards along the fixed block 30, and the movable block 8 also moves the movable hole 31 outwards. The movement of the movable hole 31 and the outward expansion of the movable block 8 alter the flow area inside the fixed tube 2, thus adjusting the flow rate of the liquid medicine. When the appropriate flow rate is reached, the rotating sleeve 5 stops rotating, and the limiting rail 24, through the limiting groove 25, drives the limiting block 17 to rotate between the two corresponding cylindrical blocks 15, thus limiting... Spring 16 resets and pulls limiting block 17 to slide inward along limiting rail 24 and limiting groove 25, causing limiting block 17 to drive limiting wheel 26 to engage between the corresponding two cylindrical blocks 15. Then, the control plate 11 is rotated again, causing the control plate 11 to drive the thrust bearing 28 and control groove 18 to rotate forward. When the control groove 18 rotates to the position corresponding to the limiting plate 12, the push spring 27 resets and pushes the limiting sleeve 14 to slide reset. Then, the limiting sleeve 14 drives the three limiting plates 12 to slide reset through the connecting plate 13. When the push spring 27 is fully reset, the other two limiting plates 12 are exactly on both sides of the control plate 11. Then, the control plate 11 is rotated again, causing the control plate 11 to drive the thrust bearing 28 and control groove 18 to rotate again.This causes the control plate 11 to rotate the control groove 18 to a position not corresponding to the limiting plate 12. At this time, the connecting plate 13, in conjunction with the two corresponding limiting plates 12, limits and supports the limiting sleeve 14 to one side of the control plate 11, preventing the limiting sleeve 14 from easily sliding. Then, the inner wall of the limiting sleeve 14 limits the outer wall of the limiting wheel 26, preventing the limiting wheel 26 and the limiting block 17 from sliding outwards, and also limiting the rotating sleeve 5, preventing the rotating sleeve 5 from rotating. This ensures the structural stability after the flow rate adjustment, avoids component displacement, and thus ensures the stable operation of the spraying work.

[0041] In summary, when using or operating the equipment: First, add the pre-mixed pesticide solution into the storage chamber 22, then adjust the delivery flow rate, and then turn on the drone 23 to make it rise and take off. The drone 23 is a heavy-duty drone, which will then lift and move the nozzles 19 and the storage chamber 22. Once it reaches the corresponding tree, remotely control the delivery pump 21 through the external device. The delivery pump 21 extracts the pesticide solution stored in the storage chamber 22 through the delivery pipe 20 connected to the input end, and then delivers the extracted pesticide solution to the connecting pipe 3 through the delivery pipe 20 connected to the output end of the delivery pump 21. Then, it is delivered to the connecting pipe 1 through the fixed pipe 2, and then distributed to each nozzle 19 through the connecting pipe 19. The pesticide solution is then atomized and sprayed out through the nozzles 19 to achieve the pesticide treatment work.

[0042] When the flow rate of the liquid medicine needs to be adjusted, firstly, rotate the control plate 11. The control plate 11 drives the thrust bearing 28 and the control groove 18 to rotate, causing the control groove 18 to rotate to the position corresponding to the limit plate 12. Then, push the limiting sleeve 14. The limiting sleeve 14 will cause the connecting plate 13 and the limit plate 12 to gradually slide through the control groove 18. The limiting sleeve 14 will cooperate with the control plate 11 to compress the push spring 27. When the push spring 27 is compressed to its limit, the limit plate 12 closest to the limiting sleeve 14 just passes through the control groove 18 and moves to the other side of the control plate 11. Then, rotate the control plate 11 again, causing the control plate 11 to drive the control groove 18 and the thrust bearing 28 to rotate, causing the control groove 18 to rotate to a position that is not in contact with the limit plate 12. At the corresponding position, the connecting plate 13, in conjunction with the limiting plate 12 closest to the limiting sleeve 14, limits the limiting sleeve 14 to one side of the control plate 11, so that the limiting sleeve 14 no longer limits the outer wall of the limiting wheel 26. Then, the control sleeve is rotated in the forward direction. The control sleeve drives the limiting block 17 to rotate in the forward direction through the limiting rail 24 and the limiting groove 25. Then, the limiting block 17 will drive the limiting wheel 26 to roll out between the two cylindrical blocks 15, and the limiting wheel 26 will drive the limiting block 17 to slide outward along the limiting rail 24 and the limiting groove 25, and cause the limiting block 17 to drive the limiting spring 16 to stretch outward. At the same time, the rotating sleeve 5 will drive the inner mating sleeve 7 to rotate in the forward direction. Since the mating sleeve 7 and the mating rod 6 are connected by threads, and the movable frame 4 is guided... Block 10 and guide groove 9 limit the movement of the movable frame 4 and the cooperating rod 6, preventing them from rotating. The cooperating rod 6 then drives the movable frame 4 to slide, which in turn drives the movable groove 29 to move. This causes the movable block 8 to slide within the inclined movable groove 29, simultaneously causing the movable block 8 to slide the movable groove 29 outwards along the fixed block 30. The movable block 8 also drives the movable hole 31 to move outwards. The movement of the movable hole 31 and the outward diffusion of the movable block 8 alter the flow area inside the fixed tube 2, achieving the purpose of adjusting the liquid delivery flow rate. When a suitable delivery flow rate is reached, the rotating sleeve 5 stops rotating, and the limiting rail 24 drives the limiting block 17 to rotate between the corresponding two cylindrical blocks 15 via the limiting groove 25. Then, the limiting spring... 16. The reset pull of the limiting block 17 slides inward along the limiting rail 24 and the limiting groove 25, causing the limiting block 17 to drive the limiting wheel 26 to engage between the corresponding two cylindrical blocks 15. Then, the control plate 11 is rotated again, causing the control plate 11 to drive the thrust bearing 28 and the control groove 18 to rotate in the forward direction. When the control groove 18 rotates to the position corresponding to the limit plate 12, the push spring 27 resets and pushes the limiting sleeve 14 to slide reset. Then, the limiting sleeve 14 drives the three limit plates 12 to slide reset through the connecting plate 13. When the push spring 27 is fully reset, the other two limit plates 12 are exactly on both sides of the control plate 11. Then, the control plate 11 is rotated again, causing the control plate 11 to drive the thrust bearing 28 and the control groove 18 to rotate again.This causes the control plate 11 to rotate the control groove 18 to a position not corresponding to the limiting plate 12. At this time, the connecting plate 13, in conjunction with the two corresponding limiting plates 12, limits and supports the limiting sleeve 14 to one side of the control plate 11, preventing the limiting sleeve 14 from easily sliding. Then, the inner wall of the limiting sleeve 14 limits the outer wall of the limiting wheel 26, preventing the limiting wheel 26 and the limiting block 17 from sliding outwards, and also limiting the rotating sleeve 5, preventing the rotating sleeve 5 from rotating. This ensures the structural stability after the flow rate adjustment, avoids component displacement, and thus ensures the stable operation of the spraying work.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel airborne target spraying device for forestry, comprising a connecting pipe (1), characterized in that: A spraying device is installed on one side of the connecting pipe (1), and a speed regulating device is connected to the connecting pipe (1). The speed regulating device includes a fixed pipe (2), a connecting pipe (3), a movable frame (4), a rotating sleeve (5), a mating rod (6), a mating sleeve (7), a movable block (8), a guide groove (9), and a guide block (10). The movable frame (4) is connected to one end of the mating rod (6), and the outer wall of the mating rod (6) is movably connected to the inner wall of the mating sleeve (7) by a thread. The rotating sleeve (5) is rotatably connected to the connecting pipe (3) and the fixed pipe (2), and the mating sleeve (7) is connected to the inner side of the rotating sleeve (5). The movable block (8) is set inside the fixed pipe (2), and the guide groove (9) is opened on the movable frame (4). The block (10) is set in the movable block (8), and a limiting mechanism is installed on the outside of the connecting pipe (3). The limiting mechanism includes a control plate (11), a limiting plate (12), a connecting plate (13), a limiting sleeve (14), a cylindrical block (15), a limiting spring (16), a limiting block (17), and a control groove (18). Three limiting plates (12) are installed on one side of the connecting plate (13), the connecting plate (13) is installed on one side of the limiting sleeve (14), the limiting sleeve (14) is installed on the outside of the connecting pipe (3), multiple cylindrical blocks (15) are installed on the outside of the connecting pipe (3), the limiting spring (16) is connected to two adjacent limiting blocks (17), and the control groove (18) is opened on the control plate (11).

2. The novel airborne target-spraying device for forestry according to claim 1, characterized in that: The spraying device includes a nozzle (19), a delivery pipe (20), a delivery pump (21), a storage chamber (22), and a drone (23). Multiple nozzles (19) are connected below the connecting pipe (1). The input end of the delivery pump (21) is connected to the storage chamber (22) through the delivery pipe (20), and the output end of the delivery pump (21) is connected to the connecting pipe (3) through the delivery pipe (20). The storage chamber (22) is detachably installed below the drone (23).

3. The novel on-board target spraying device for forestry according to any one of claims 1 or 2, characterized in that: The rotating sleeve (5) is fixedly provided with multiple limiting rails (24) on one side, and the limiting block (17) is provided with a limiting groove (25). The limiting block (17) is slidably installed on the outside of the limiting rails (24) through the limiting groove (25).

4. The novel airborne target-spraying device for forestry use according to claim 3, characterized in that: The limiting block (17) has a limiting wheel (26) on one side that rotates, and the limiting wheel (26) is engaged between two cylindrical blocks (15).

5. The novel on-board target spraying device for forestry according to claim 4, characterized in that: A push spring (27) is connected to one side of the limiting sleeve (14), and a thrust bearing (28) is connected to the other end of the push spring (27). The thrust bearing (28) is detachably installed on one side of the control panel (11).

6. The novel on-board target spraying device for forestry according to claim 1, characterized in that: The movable block (8) has a movable groove (29) on one side, and a fixed block (30) is fixed inside the fixed tube (2), with the fixed block (30) located in the movable groove (29).

7. A novel airborne target spraying device for forestry according to claim 6, characterized in that: The movable block (8) has multiple movable holes (31).

8. The novel on-board target spraying device for forestry according to claim 5, characterized in that: Both the limiting groove (25) and the limiting rail (24) are T-shaped structures.

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