Crawler-type unmanned plant protection machine for crop spraying

Abstract

The application discloses a crawler type unmanned plant protection machine for crop spraying, and relates to the field of fruit tree protection.The crawler type unmanned plant protection machine comprises a crawler walking chassis, a loading plate, a passive telescopic structure, a spraying structure, a main water tank, a main medicine inlet pipe, an angle adjusting structure and a pressure pump, the loading plate is arranged above the crawler walking chassis, the main water tank is arranged at the middle position above the loading plate, the spraying structures are symmetrically arranged on the two sides of the main water tank, the spraying structures and the main water tank are connected through the main medicine inlet pipe, the pressure pump is arranged between the main medicine inlet pipe and the main water tank, and the angle adjusting structure for driving the spraying structure to rotate is arranged on the spraying structure.The application has the advantages of simple structure, convenient use, low requirement for medicine liquid, and the spraying angle of the spraying structure can reach 90 DEG, so that the low, middle and high parts of the fruit trees can be covered, the full coverage of the fruit trees is realized, the radius can reach 6-8 meters, large-area coverage of the fruit trees is achieved, time and labor are saved, and the spraying structure can also complete the functions of spraying and sprinkling irrigation, and can be suitable for different agricultural and planting mode crop plant protection.

Description

Technical Field

[0001] This invention relates to the field of fruit tree protection, specifically a tracked unmanned plant protection machine for spraying crops. Background Technology

[0002] According to data from the National Bureau of Statistics, my country has consistently ranked first in the world in both fruit tree planting area and total fruit production since 1993. The fruit tree plant protection market is particularly large in southern China. Fruit trees require approximately 12 to 20 sprays per year. Compared to the 3 to 5 sprays needed for seasonal crops, fruit tree plant protection can be carried out year-round, making it less affected by seasonality and more sustainable. Furthermore, the price per acre for fruit tree plant protection is higher than that for field operations. However, large areas of citrus are cultivated in Guangxi and Jiangxi provinces, where management is the biggest challenge. Currently, citrus-growing areas are experiencing severe labor shortages, leading to rising labor costs.

[0003] Currently, the commonly used plant protection methods include four types: drone-based plant protection, mist sprayer-based plant protection, gasoline-powered drones, and traditional manual plant protection.

[0004] Among them, tree-by-tree plant protection by drones addresses the challenges of traditional drone-based plant protection, such as high difficulty in spray penetration and demanding operational requirements. It employs a fixed flight path, typically with a hovering time of five seconds, using 120 ml of pesticide per tree. The operating height is determined by the tree's height, with a spraying distance generally between 1.8 and 2 meters. The multi-rotor drone generates turbulence through its downdraft, causing leaves to tumble and cover the undersides of the leaves with the spray. However, multi-rotor drones have a flight time of only about 10 minutes, and tree-by-tree spraying further exposes this drawback. The acceleration-deceleration-hovering-acceleration process consumes more power than constant-speed flight, limiting the number of trees that can be sprayed per flight to about eight, resulting in low efficiency. While multi-rotor drones can generate downdrafts, the downwash is weak, resulting in minimal ground effect and difficulty in penetrating older trees. Furthermore, the lack of continuity in spraying contact pesticides reduces their effectiveness against flying pests. Moreover, some fruit trees have thorns on their branches and trunks, and the turbulent winds can cause the branches and leaves to sway wildly, scratching the fruit.

[0005] When using mist sprayers for plant protection, the spray width reaches 12 meters and 6-7 meters, with a flow rate of approximately 45 ml per minute (a mixture of glycerol, alcohol, and pesticide). The smoke particles have a diameter of 2 μm, and the smoke agent used is generally a mixture of glycerol and alcohol in a 3:1 ratio. However, the tracked chassis is limited by the acidity / alkalinity of the pesticide components and the mixing ratio and unknown compatibility of glycerol; the atomization temperature of the loading plate mist sprayer is around 80°C, and high temperatures can affect the efficacy of some pesticides; the humidity and temperature of the operating environment have a significant impact on the passive telescopic structure; when using a spray structure to apply smoke, pests can migrate, requiring multiple machines to operate simultaneously.

[0006] When using gasoline-powered drones for agricultural spraying, their advantages of high payload and long endurance, along with the single-rotor, single-wind-field capability, can effectively control pesticide drift and agitate leaves, resulting in excellent pesticide penetration. However, their complex structure, difficult maintenance, demanding operation, high purchase price, significant engine vibration, and short lifespan are also significant drawbacks.

[0007] Traditional fruit tree protection methods have five major drawbacks: labor shortage, low operational efficiency, high cost, high management difficulty, and high frequency of pesticide application. Summary of the Invention

[0008] The purpose of this invention is to provide a tracked unmanned plant protection machine for spraying crops, in order to solve the problems existing in the prior art.

[0009] The technical solution adopted in this invention is as follows: A tracked unmanned plant protection machine for spraying crops, comprising a tracked chassis, a loading plate, a passive telescopic structure, a spraying structure, a main water tank, an auxiliary inlet pipe, a main inlet pipe, an angle adjustment structure, and a pressure pump.

[0010] The loading plate is installed above the tracked chassis, and the main water tank is installed at the middle position above the loading plate. The spray structures are symmetrically arranged on both sides of the main water tank. The spray structures are connected to the main water tank through the main inlet pipe. The pressure pump is installed between the main inlet pipe and the main water tank. The spray structure is provided with an angle adjustment structure for driving its rotation.

[0011] The spray structure includes a support base, a main pipe, a secondary pipe, a U-shaped pipe, a valve, a ceramic nozzle, a one-way valve, a telescopic pipe, and a rotary joint. The support bases are symmetrically arranged at both ends of the main pipe. One section of the main pipe passes through the support base and is connected to the auxiliary drug inlet pipe through the rotary joint. The secondary pipes are evenly arranged vertically on the main pipe. The U-shaped pipe is arranged at the upper end of the secondary pipe. The valve is arranged at one end of the U-shaped pipe. The ceramic nozzle is arranged at the upper end of the valve through a pipe. The one-way valve is arranged at the other end of the U-shaped pipe. The telescopic pipe is arranged at the upper end of the one-way valve. The telescopic pipe is equipped with a passive telescopic structure. In order to ensure that the main pipe can rotate flexibly without affecting the delivery of the drug solution, the rotary joint is arranged at the end of the main pipe.

[0012] The passive telescopic structure includes a valve tube, a stop plate, a flow hole, a plug, a guide post, a mounting rod, and a spring. One end of the valve tube is fixed to the telescopic tube. The stop plate is installed inside the valve tube, and the flow hole is opened at the center of the stop plate. The plug is installed on the flow hole, and the area of ​​the plug is smaller than the cross-sectional area of ​​the valve tube. The guide post is installed vertically at the center of the plug, and the upper end of the guide post is fixed between the mounting rods. The other end of the mounting rod is fixed to the inner wall of the valve tube, and the spring is installed between the plug and the guide post.

[0013] Furthermore, the spray structure, the main water tank, and the pressure pump are all equipped with limiting plates of corresponding size, and the loading plate has limiting grooves corresponding to each of the limiting plates.

[0014] Furthermore, vertical rails are symmetrically arranged on the inner wall of the main water tank, and a drug distribution structure is arranged between the vertical rails. The drug distribution structure includes a drug supply pipe, a submersible pump, a drug inlet pipe, and a drug distribution pipe. The submersible pump is installed in each drug distribution pipe. The submersible pump is connected to the main pipe through the drug supply pipe and the auxiliary drug inlet pipe at the other end of the main pipe. Each drug distribution pipe is equipped with a drug inlet pipe for adding drug solution.

[0015] Furthermore, the angle adjustment structure includes a driven gear, a driving gear, and an adjustment motor. The driven gear is mounted on the support base, the adjustment motor is mounted on the limiting plate corresponding to the spray structure, and the driving gear is mounted on the output shaft of the adjustment motor. The driving gear and the driven gear mesh.

[0016] Furthermore, a protective box is provided above the loading plate, the protective box including a box body, a spray window, a top cover and an insertion slot;

[0017] The insertion slots are disposed on the loading plate, and the box is disposed between the insertion slots. The box has the spray window at the position corresponding to the spray structure, and the top cover is hinged to the top of the box.

[0018] Furthermore, the tracked chassis is equipped with a towing hook at the rear.

[0019] Furthermore, a lighting lamp is provided at the front of the tracked chassis, and two mounting brackets are arranged parallel to each other above the top cover to facilitate the binding of goods with ropes.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The present invention has a simple structure, is easy to use, has low requirements for pesticide solution, and the spraying structure can spray at an angle of up to 90° to cover the low, middle and high parts of the fruit tree, achieving full coverage of the fruit tree, and the radius can reach 6-8 meters, covering a large area of ​​fruit trees, saving time and labor. In addition, the spraying structure can also perform multiple functions such as spraying and irrigation, and can be applied to crop protection of different agronomic and planting modes.

[0022] 2. This invention is multi-functional. By removing the spraying structure, main water tank, pressure pump, and protective box, it can be used as a field transporter, achieving the dual functions of applying pesticides during the plant protection period and transporting pesticides during the harvest period, thus realizing multi-scenario utilization.

[0023] 3. In this invention, the spray structure, main water tank and pressure pump are all installed in the corresponding limiting grooves through limiting plates, which can realize modular installation and facilitate cleaning and drainage;

[0024] 4. The tracked chassis in this invention adopts a tracked chassis design, which has good walking performance and high load capacity, saving manpower and material resources;

[0025] 5. The present invention sets up several dispensing structures in the main water tank. By dispensing different medicines into each dispensing tube, the specified medicine can be sprayed according to actual needs. Attached Figure Description

[0026] Figure 1 This is a top view of the tracked unmanned plant protection drone of the present invention after the top cover has been removed;

[0027] Figure 2 This is a left view of the tracked unmanned plant protection machine in this invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the tracked unmanned plant protection machine in this invention;

[0029] Figure 4 This is a left view of the tracked unmanned agricultural drone in this invention.

[0030] Figure 5 This is a schematic diagram of the spraying structure in the tracked unmanned plant protection drone of the present invention;

[0031] Figure 6 This is a schematic diagram of the passive telescopic structure in this invention;

[0032] Figure 7 yes Figure 1 A magnified view of a portion of point B in the middle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Tracked chassis; 2. Loading plate; 3. Passive telescopic structure; 31. Valve pipe; 32. Stop plate; 33. Flow hole; 34. Plug; 35. Guide column; 36. Mounting rod; 37. Spring; 4. Spraying structure; 41. Support base; 42. Main pipe; 43. Sub-pipe; 44. U-tube; 45. Valve; 46. Ceramic nozzle; 47. Check valve; 48. Telescopic pipe; 49. Rotary joint; 5. Main water supply. 6. Box; 61. Protective box; 62. Box body; 63. Spray window; 64. Top cover; 7. Insertion slot; 8. Drug distribution structure; 9. Drug supply pipe; 10. Submersible pump; 11. Drug inlet pipe; 12. Drug distribution pipe; 13. Auxiliary drug inlet pipe; 14. Main drug inlet pipe; 15. Angle adjustment structure; 16. Driven gear; 17. Driven gear; 18. Adjustment motor; 19. Lighting lamp; 10. Towing hook; 11. Pressure pump. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] Example 1

[0038] Figures 1-7 As shown: A tracked unmanned plant protection machine for spraying crops includes a tracked chassis 1, a loading plate 2, a passive telescopic structure 3, a spraying structure 4, a main water tank 5, an auxiliary inlet pipe 8, a main inlet pipe 9, an angle adjustment structure 10, and a pressure pump 13.

[0039] A loading plate 2 is installed on top of the tracked chassis 1. A main water tank 5 is installed in the middle of the loading plate 2. Spraying structures 4 are symmetrically arranged on both sides of the main water tank 5. The spraying structures 4 are connected to the main water tank 5 through a main inlet pipe 9. A pressure pump 13 is installed between the main inlet pipe 9 and the main water tank 5. An angle adjustment structure 10 for driving the rotation of the spraying structure 4 is installed on it.

[0040] The tracked chassis 1 is used to drive other components mounted on the loading plate 2 to move. The main water tank 5 is used to store the liquid medicine. The pressure pump 13 pumps the liquid medicine stored in the main water tank 5 to the spraying structure 4. The liquid medicine is sprayed onto the surface of the fruit trees through the spraying structure 4. When the spraying structure 4 is spraying the liquid medicine, the angle adjustment structure 10 can change its angle. The spraying angle of the liquid medicine can be changed within a 90° range to cover the low, middle and high parts of the fruit trees, so as to achieve full coverage of the fruit trees.

[0041] Each of the spray structure 4, main water tank 5, and pressure pump 13 is equipped with a corresponding size limit plate. The loading plate 2 has corresponding limit grooves on each limit plate. When disassembling the spray structure 4, main water tank 5, and pressure pump 13, quick positioning is achieved by placing the limit plates into the limit grooves. After placing the spray structure 4, main water tank 5, and pressure pump 13 into the limit grooves via the limit plates, bolts are passed through each limit plate and extended into the loading plate 2 to tighten them, thus securing the spray structure 4, main water tank 5, and pressure pump 13. This allows for quick disassembly and installation of the spray structure 4, main water tank 5, and pressure pump 13, enabling them to be removed when not spraying chemicals. Furthermore, items can be transported via the tracked chassis 1.

[0042] The spray structure 4 includes a support base 41, a main pipe 42, a secondary pipe 43, a U-shaped pipe 44, a valve 45, a ceramic nozzle 46, a one-way valve 47, a telescopic pipe 48, and a rotary joint 49. The main pipe 42 is symmetrically provided with support bases 41 at both ends. One section of the main pipe 42 passes through the support base 41 and is connected to the auxiliary drug inlet pipe 8 through the rotary joint 49. The secondary pipes 43 are evenly arranged vertically on the main pipe 42. A U-shaped pipe 44 is provided at the upper end of the secondary pipe 43. A valve 45 is provided at one end of the U-shaped pipe 44. A ceramic nozzle 46 is provided at the upper end of the valve 45 through a pipe. A one-way valve 47 is provided at the other end of the U-shaped pipe 44. A telescopic pipe 48 is provided at the upper end of the one-way valve 47. A passive telescopic structure 3 is provided at the upper end of the telescopic pipe 48. In order to ensure that the main pipe 42 can rotate flexibly without affecting the delivery of the drug liquid, a rotary joint 49 is provided at the end of the main pipe 42.

[0043] When spraying pesticide on fruit trees, pressure pump 13 pumps the pesticide through main inlet pipe 9 to main pipe 42. Since a one-way valve 47 is installed at one end of U-shaped pipe 44, the pesticide passes through the end of U-shaped pipe 44 equipped with ceramic nozzle 46. When irrigating fruit trees, valve 45 is closed. The pressure of the pesticide in U-shaped pipe 44 exceeds the set value of one-way valve 47, opening the valve core of one-way valve 47 and spraying out the pesticide. To expand the irrigation range, a telescopic pipe 48 is installed on one-way valve 47. By extending the telescopic pipe 48, its length can be changed, allowing the pesticide to be sprayed to the desired location. Furthermore, the telescopic pipe 48 can be retracted when not in use to prevent damage to trees in the orchard from contact with it during the movement of the plant protection machine due to its excessive length.

[0044] The passive telescopic structure 3 includes a valve pipe 31, a stop plate 32, a flow hole 33, a plug 34, a guide post 35, a mounting rod 36, and a spring 37. One end of the valve pipe 31 is fixed to the telescopic pipe 48. The stop plate 32 is installed inside the valve pipe 31. A flow hole 33 is opened at the center of the stop plate 32. A plug 34 is installed on the flow hole 33. The area of ​​the plug 34 is smaller than the cross-sectional area of ​​the valve pipe 31. A guide post 35 is installed vertically at the center of the plug 34. The upper end of the guide post 35 is fixed between the mounting rods 36. The other end of the mounting rod 36 is fixed to the inner wall of the valve pipe 31. A spring 37 is installed between the plug 34 and the guide post 35.

[0045] When the telescopic tube 48 is stretched, it needs to be stretched manually. Therefore, a passive telescopic structure 3 is set at the end of the telescopic tube 48. When the liquid enters the telescopic tube 48, the liquid pressure is not enough to push up the plug 34. Therefore, only when the pressure inside the telescopic tube 48 is sufficient to overcome the elastic force of the spring 37 can the plug 34 be pushed up. During the process of the liquid filling the telescopic tube 48, the liquid pressure is used to stretch the telescopic tube 48.

[0046] The angle adjustment structure 10 includes a driven gear 1001, a driving gear 1002, and an adjustment motor 1003. The driven gear 1001 is mounted on the support base 41, and the adjustment motor 1003 is mounted on the corresponding limit plate of the spray structure 4. The driving gear 1002 is mounted on the output shaft of the adjustment motor 1003. When the adjustment motor 1003 rotates, it drives the driven gear 1001 and the support base 41 to rotate through the driving gear 1002.

[0047] The tracked chassis 1 is existing technology and will not be described in detail here.

[0048] Example 2

[0049] The difference between this embodiment and embodiment 1 is that: vertical rails are symmetrically arranged on the inner wall of the main water tank 5, and a drug distribution structure 7 is arranged between the vertical rails. The drug distribution structure 7 includes a drug supply pipe 71, a submersible pump 72, a drug inlet pipe 73, and a drug distribution pipe 74. If multiple drugs need to be sprayed, different drug solutions are divided into each drug distribution pipe 74, and each drug distribution pipe 74 is equipped with a submersible pump 72. The submersible pump 72 pumps the drug solution in the drug distribution pipe 74 and delivers it to the main pipe 42 through the drug supply pipe 71 and the auxiliary drug inlet pipe 8 at the other end of the main pipe 42. Each drug distribution pipe 74 is also equipped with a drug inlet pipe 73 for adding drug solution.

[0050] Different liquid medicines are dispensed into different dispensing tubes 74. When it is necessary to spray the liquid medicine in a specific dispensing tube 74, simply turn on the submersible pump 72 in the corresponding dispensing tube 74 to pump the liquid medicine to the spraying structure 4 and spray it through the spraying structure 4.

[0051] Example 3

[0052] The difference between this embodiment and embodiment 1 is that, in order to avoid the plant protection machine from colliding with the plants in the orchard during the movement and causing damage, a protective box 6 is provided above the loading plate 2. The protective box 6 includes a box body 61, a spray window 62, a top cover 63, and an insertion slot 64.

[0053] Insertion slots 64 are provided on loading plate 2, and a box 61 is provided between the insertion slots 64. A spray window 62 is provided on the box 61 at the position corresponding to the spray structure 4, and a top cover 63 is hinged to the top of the box 61.

[0054] The housing 61 is installed in the insertion slot 64 for easy disassembly, and a spray window 62 is provided on the housing 61 so as not to affect the spraying of the liquid medicine. The top cover 63 is hinged so that it can be opened to operate the internal components.

[0055] Example 4

[0056] The difference between this embodiment and embodiment 1 is that: a towing hook 12 is provided at the rear of the tracked chassis 1, and a lighting lamp 11 is provided at the front of the tracked chassis 1.

[0057] The tow hook 12 is used to tow non-powered vehicles, and the light 11 is used for illumination to facilitate nighttime operations.

[0058] In addition, to facilitate daily transportation of goods, two mounting brackets 14 are arranged in parallel above the top cover 63 to facilitate the binding of goods with ropes.

[0059] The lighting 11, pressure pump 13 and submersible pump 72 are all powered by range extenders mounted on the tracked chassis 1.

Claims

1. A tracked unmanned plant protection machine for spraying crops, characterized in that, It includes a tracked chassis (1), a loading plate (2), a passive telescopic structure (3), a spraying structure (4), a main water tank (5), an auxiliary inlet pipe (8), a main inlet pipe (9), an angle adjustment structure (10), and a pressure pump (13). The loading plate (2) is provided above the tracked chassis (1), the main water tank (5) is provided at the middle position above the loading plate (2), the spray structure (4) is symmetrically arranged on both sides of the main water tank (5), the spray structure (4) is connected to the main water tank (5) through the main inlet pipe (9), the pressure pump (13) is provided between the main inlet pipe (9) and the main water tank (5), and the angle adjustment structure (10) for driving its rotation is provided on the spray structure (4). The spray structure (4) includes a support base (41), a main pipe (42), a secondary pipe (43), a U-shaped pipe (44), a valve (45), a ceramic nozzle (46), a one-way valve (47), a telescopic pipe (48), and a rotary joint (49). The support base (41) is symmetrically arranged at both ends of the main pipe (42). One section of the main pipe (42) passes through the support base (41) and is connected to the auxiliary inlet pipe (8) through the rotary joint (49). The secondary pipes (43) are evenly arranged vertically on the main pipe (42). (43) The upper end is provided with the U-shaped pipe (44), one end of the U-shaped pipe (44) is provided with the valve (45), the upper end of the valve (45) is provided with the ceramic nozzle (46) through the pipe, the other end of the U-shaped pipe (44) is provided with the one-way valve (47), the upper end of the one-way valve (47) is provided with the telescopic pipe (48), the upper end of the telescopic pipe (48) is provided with a passive telescopic structure (3), in order to ensure that the main pipe (42) can rotate flexibly without affecting the delivery of the medicine liquid, the end of the main pipe (42) is provided with the rotary joint (49). The passive telescopic structure (3) includes a valve pipe (31), a stop plate (32), a flow hole (33), a plug (34), a guide post (35), a mounting rod (36), and a spring (37). One end of the valve pipe (31) is fixed to the telescopic pipe (48). The stop plate (32) is installed inside the valve pipe (31). The flow hole (33) is opened at the center of the stop plate (32). The plug (34) is installed on the flow hole (33). The area of ​​the plug (34) is smaller than the cross-sectional area of ​​the valve pipe (31). The center of the plug (34) is set vertically. The guide post (35) is fixed at its upper end between the mounting rods (36), and the other end of the mounting rods (36) is fixed on the inner wall of the valve tube (31). The spring (37) is set between the plug (34) and the guide post (35). When the liquid enters the telescopic tube (48), the liquid pressure is not enough to push the plug (34) up. Therefore, only when the pressure inside the telescopic tube (48) is sufficient to overcome the elastic force of the spring (37) can the plug (34) be pushed up. During the process of the liquid filling the telescopic tube (48), the liquid pressure is used to stretch the telescopic tube (48). A protective box (6) is provided above the loading plate (2). The protective box (6) includes a box body (61), a spray window (62), a top cover (63), and an insertion slot (64). The box body (61) is provided with the spray window (62) at the position corresponding to the spray structure (4), so as not to affect the spraying of the medicine. By stretching the telescopic tube (48), its length can be changed so that the liquid can be sprayed to the desired location. When not in use, the telescopic tube (48) can be retracted to avoid contact with trees and damage to trees when the plant protection machine moves due to its excessive length.

2. The tracked unmanned plant protection machine for spraying crops according to claim 1, characterized in that: The spray structure (4), the main water tank (5) and the pressure pump (13) are all equipped with limiting plates of corresponding size, and the loading plate (2) has limiting grooves corresponding to each of the limiting plates.

3. The tracked unmanned plant protection machine for spraying crops according to claim 1, characterized in that: The main water tank (5) has vertical rails symmetrically arranged on its inner wall, and a drug distribution structure (7) is arranged between the vertical rails. The drug distribution structure (7) includes a drug supply pipe (71), a submersible pump (72), a drug inlet pipe (73), and a drug distribution pipe (74). The submersible pump (72) is installed in each of the drug distribution pipes (74). The submersible pump (72) is connected to the main pipe (42) through the drug supply pipe (71) and the auxiliary drug inlet pipe (8) at the other end of the main pipe (42). Each drug distribution pipe (74) is provided with the drug inlet pipe (73) for adding medicine.

4. A tracked unmanned plant protection machine for spraying crops according to claim 2, characterized in that: The angle adjustment structure (10) includes a driven gear (1001), a driving gear (1002), and an adjustment motor (1003). The driven gear (1001) is mounted on the support base (41), and the adjustment motor (1003) is mounted on the limiting plate corresponding to the spray structure (4). The driving gear (1002) is mounted on the output shaft of the adjustment motor (1003), and the driving gear (1002) and the driven gear (1001) mesh.

5. A tracked unmanned plant protection machine for spraying crops according to claim 1, characterized in that: The insertion slot (64) is disposed on the loading plate (2), and the box (61) is disposed between the insertion slots (64). The top cover (63) is hinged to the top of the box (61).

6. A tracked unmanned plant protection machine for spraying crops according to claim 1, characterized in that: The tracked chassis (1) is equipped with a towing hook (12) at the rear.

7. A tracked unmanned plant protection machine for spraying crops according to claim 5, characterized in that: The tracked chassis (1) is equipped with a lighting lamp (11) at the front.

8. A tracked unmanned plant protection machine for spraying crops according to claim 5, characterized in that: Two mounting brackets (14) are arranged parallel above the top cover (63) to facilitate the binding of goods with ropes.

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