A self-propelled apparatus for automatic spraying of pesticides

Abstract

The utility model relates to a kind of self-wheel running equipment for automatic pesticide spraying, including two tractor heads, and two tractor heads are equipped with extension structure, and extension structure includes first spread arm, second spread arm, third spread arm, first gear, second gear, third gear, fourth gear, first T-shaped slot, first T-shaped block, first connecting rod, second T-shaped slot, second T-shaped block and second connecting rod.The utility model has the beneficial effect that the pesticide spraying overall equipment architecture of self-wheel running is constructed, the tractor head guarantees movement, and the extension structure can be flexibly adjusted spread arm form by multiple components cooperation, adapts to the operation width of different rail two sides, satisfies the weed control needs around different width and narrow rail;Transfer box can be hoisted and changed plate car, improve the versatility and transfer convenience of equipment between different operation scenes and different plate cars;Remote control makes operator unnecessary to assist from side, can control equipment outside safe distance, both guarantee personnel safety, and improve operation convenience, adapt to pesticide spraying and other scenes.

Description

Technical Field

[0001] This utility model relates to the field of railway operation and maintenance technology, and in particular to a self-propelled device for automatically spraying pesticides. Background Technology

[0002] In railway operation and maintenance scenarios, the growth of weeds along the railway line can affect the safety of railway facilities and encroach on railway limits, requiring regular management.

[0003] However, with current technology, spraying is done manually, which is intensive and inefficient. Moreover, railway line maintenance projects have begun to be fully incorporated into "maintenance windows" for 90-120 minutes a day, resulting in low efficiency. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the main purpose of this utility model is to provide a self-propelled device for automatic pesticide spraying, which solves the problems of manual spraying, high work intensity and low work efficiency in the prior art, and the fact that railway line maintenance projects have begun to be fully included in the "maintenance window" operation, which is 90-120 minutes a day and has low work efficiency.

[0005] The technical solution of this utility model is as follows: a self-propelled device for automatic pesticide spraying, comprising two tractor heads, with an extension structure between the two tractor heads, the extension structure comprising a first extension arm, a second extension arm, a third extension arm, a first gear, a second gear, a third gear, a fourth gear, a first T-slot, a first T-block, a first connecting rod, a second T-slot, a second T-block, and a second connecting rod.

[0006] A flatbed cart is installed and connected between the two tractor units. The top of the flatbed cart is equipped with a transfer box. A connecting seat is fixedly connected to the bottom of the inner wall of the transfer box. Two first extension arms are rotatably connected inside the connecting seat. A first T-slot is opened on one side of each first extension arm. A first T-block is slidably connected inside each first T-slot. A first connecting rod is rotatably connected between one side of each second extension arm and the corresponding first T-block. A second T-slot is opened on one side of each second extension arm. A second T-block is slidably connected inside each second T-slot. A second connecting rod is rotatably connected between the third extension arm and the corresponding second T-block.

[0007] Through the above technical solutions, a self-propelled pesticide spraying equipment architecture is constructed. The tractor ensures mobility, and the extension structure, through the cooperation of multiple components, can flexibly adjust the boom shape to adapt to the working width on both sides of different railway tracks, meeting the needs of weeding around railway tracks of varying widths. The transfer box can be hoisted and transferred to a flatbed truck, improving the equipment's versatility and ease of transport in different operating scenarios and different flatbed workshops. Remote control allows operators to operate the equipment from a safe distance without assistance, ensuring personnel safety and improving operational convenience, adapting to pesticide spraying and other scenarios.

[0008] In a preferred embodiment, the end of the first extension arm away from the connecting seat is rotatably connected to a second gear, both ends of the second extension arm are rotatably connected to a third gear, and the end of the third extension arm near the second extension arm is rotatably connected to a fourth gear. The second gear is meshed with the corresponding third gear, and the fourth gear is meshed with the corresponding third gear.

[0009] Through the above technical solutions, the gear meshing transmission has high precision and can accurately transmit power, ensuring that each arm moves synchronously and stably during the extension and retraction of the boom, avoiding jamming and misalignment, improving the reliability and smoothness of the extension structure, and allowing the equipment boom to be adjusted more precisely to adapt to different working ranges, such as precise retraction in narrow working ranges and stable extension in wide working ranges, ensuring the working effect.

[0010] In a preferred embodiment, the bottom of the first arm, the second arm, and the third arm are all fixedly connected with fixed sleeves at equal intervals, and spray pipes are fixedly connected between the inner walls of the multiple fixed sleeves. Connecting pipes are fixedly connected between the spray pipes, and nozzles are provided at equal intervals at the bottom of the spray pipes.

[0011] Through the above technical solutions, the fixing sleeve enables the spray pipe to be installed quickly and stably, facilitating later maintenance and replacement; the connecting pipe constructs a complete and continuous spray pipeline, allowing pesticides to flow smoothly within the pipe; multiple nozzles are evenly distributed to ensure that weeds at different locations on both sides of the railway are evenly treated with pesticides, improving the coverage and uniformity of pesticide spraying, enhancing the effectiveness of weeding and other operations, reducing missed spraying and double spraying, and improving pesticide utilization.

[0012] In a preferred embodiment, two drive water pumps are installed and connected at the bottom of the inner wall of the transfer box and on one side of the connecting seat. Two arc-shaped grooves are opened on the side of the connecting seat near the drive water pumps. A hose is fixedly connected to one end of the spray pipe inside the arc-shaped groove. A connecting pipe is fixedly connected between the output ends of the two drive water pumps, and the hoses are fixedly connected to the connecting pipe.

[0013] The above technical solution uses a water pump as a power source to provide power for pesticide delivery, ensuring that the pesticide can reach each nozzle. The matching design of the arc groove and the hose effectively prevents damage to the hose caused by the extension of the arm, extends the service life of the hose, ensures the continuous and stable operation of pesticide spraying, enhances the overall operational stability and reliability of the equipment, and reduces operation interruptions caused by pipeline failures.

[0014] In a preferred embodiment, a water storage tank is fixedly connected to the top of the cart and to one side of the transfer box. A delivery pipe is fixedly connected between the water storage tank and the input end of the drive water pump. The connection ends of the delivery pipe, connecting pipe, spraying pipe and hose are all quick connectors.

[0015] Through the above technical solutions, the water storage tank provides a stable pesticide storage space to ensure pesticide supply during operation; the delivery pipe realizes the construction of pesticide transmission channels; the quick connector greatly simplifies the pipeline connection process, reduces the difficulty and time cost of equipment assembly, facilitates daily maintenance and repair, and allows for quick replacement of pipelines in case of blockage or damage, improving equipment operation and maintenance efficiency, enhancing equipment practicality and convenience, and enabling the equipment to be quickly deployed for operation in different sites.

[0016] In a preferred embodiment, two hydraulic rods are installed and connected to both sides of the top of the inner wall of the transfer box, and baffles are rotatably connected to both ends of the top of the transfer box. The piston rods of the hydraulic rods are rotatably connected to the corresponding baffles.

[0017] Through the above technical solution, the hydraulic rod drives the baffle to open and close flexibly, providing physical protection for the equipment inside the transfer box, reducing damage to the components from external factors, and extending the service life of the equipment; the open state allows maintenance personnel to quickly access the internal components, improving the convenience of daily maintenance and repair, and reducing the difficulty and time cost of maintenance.

[0018] In a preferred embodiment, a drive motor is fixedly connected to the outer side of both the second and third extension arms, and the output shaft of each drive motor is fixedly connected to a corresponding third gear and a fourth gear. A first gear is fixedly connected to the outer side of the output shaft of the first extension arm, and a servo motor is fixedly connected to the outer side of the connecting seat. The output shaft of the servo motor is fixedly connected to one of the first gears.

[0019] Through the above technical solutions, the drive motor and servo motor provide independent and controllable power for the boom rotation. By precisely controlling the operation of the motor, the extension and retraction of the boom can be precisely adjusted, allowing the equipment to flexibly and precisely adjust the boom shape according to the different working width requirements on both sides of the rail, thereby improving the automation level and operational flexibility of the equipment and adapting to complex and ever-changing working scenarios around the rail.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] This invention constructs a self-propelled pesticide spraying equipment architecture. The tractor unit ensures mobility, and the extension structure, through the cooperation of multiple components, can flexibly adjust the boom shape to adapt to different working widths on both sides of railway tracks, meeting the needs of weeding and other tasks around railway tracks of varying widths. The transfer box can be hoisted and transferred to a flatbed truck, improving the equipment's versatility and ease of transport in different operating scenarios and different flatbed workshops. Remote control allows operators to operate the equipment from a safe distance without assistance, ensuring personnel safety and improving operational convenience, making it suitable for pesticide spraying and other scenarios.

[0022] The high precision of the gear meshing transmission ensures accurate power transmission, guaranteeing synchronized and stable operation of each arm during extension and retraction. This prevents jamming and misalignment, improving the reliability and smoothness of the extension structure. It allows for more precise arm adjustments, adapting to different operating ranges. For example, it allows for precise retraction in narrow areas or when encountering obstacles, and stable extension in wide areas, ensuring optimal performance. The fixing sleeve enables quick and secure installation of the spray pipe, facilitating future maintenance and replacement. The connecting pipe constructs a complete and continuous spraying pipeline, allowing for smooth pesticide flow. Multiple evenly distributed nozzles ensure uniform pesticide application to weeds on both sides of the rails, increasing pesticide coverage and uniformity, enhancing weed control, reducing missed or overlapping spraying, and improving pesticide utilization. The driving water pump provides power for pesticide delivery, ensuring pesticides reach all nozzles. The arc-shaped groove and hose matching design effectively prevent damage to the hose during arm extension, extending hose life and ensuring continuous and stable pesticide spraying. This enhances the overall operational stability and reliability of the equipment, reducing operational interruptions due to pipeline failures. Attached Figure Description

[0023] Figure 1 This utility model provides an overall structural schematic diagram of a self-propelled device for automatic pesticide spraying;

[0024] Figure 2 This utility model provides a front view structural schematic diagram of a self-propelled device for automatic pesticide spraying;

[0025] Figure 3 This utility model provides a first-view structural schematic diagram of the extension structure of a self-propelled device for automatic pesticide spraying.

[0026] Figure 4 This utility model provides a second-view structural schematic diagram of the extension structure of a self-propelled device for automatic pesticide spraying.

[0027] Legend: 1. Tractor head; 2. Flatbed truck; 3. Transfer box; 4. Hydraulic rod; 5. Baffle plate; 6. Connecting seat; 7. First boom; 8. Second boom; 9. Third boom; 10. First gear; 11. First T-slot; 12. First T-block; 13. First connecting rod; 14. Second gear; 15. Third gear; 16. Fourth gear; 17. Second T-slot; 18. Second T-block; 19. Second connecting rod; 20. Fixing sleeve; 21. Spray pipe; 22. Connecting pipe; 23. Drive motor; 24. Servo motor; 25. Arc groove; 26. Hose; 27. Drive water pump; 28. Connecting pipe; 29. ​​Water tank; 30. Delivery pipe. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Example

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this utility model provides a technical solution: including two tractor heads 1, with an extension structure between the two tractor heads 1, the extension structure including a first extension arm 7, a second extension arm 8, a third extension arm 9, a first gear 10, a second gear 14, a third gear 15, a fourth gear 16, a first T-slot 11, a first T-block 12, a first connecting rod 13, a second T-slot 17, a second T-block 18, and a second connecting rod 19;

[0031] A flatbed cart 2 is installed and connected between two tractor heads 1. A transfer box 3 is provided on the top of the flatbed cart 2. A connecting seat 6 is fixedly connected to the bottom of the inner wall of the transfer box 3. Two first arms 7 are rotatably connected inside the connecting seat 6. A first T-slot 11 is opened on one side of each first arm 7. A first T-block 12 is slidably connected inside each first T-slot 11. A first connecting rod 13 is rotatably connected between one side of the second arm 8 and the corresponding first T-block 12. A second T-slot 17 is opened on one side of each second arm 8. A second T-block 18 is slidably connected inside each second T-slot 17. A second connecting rod 19 is rotatably connected between the third arm 9 and the corresponding second T-block 18.

[0032] In this embodiment, two tractor heads 1 serve as mobile carriers, providing self-wheel power to move along the railway track. The extension structure between the two tractor heads 1, based on the sequential connection of the first extension arm 7, the second extension arm 8, and the third extension arm 9, utilizes the sliding and rotational cooperation of the first T-slot 11 with the first T-block 12 and the first connecting rod 13, and the second T-slot 17 with the second T-block 18 and the second connecting rod 19, allowing the extension arms to flexibly extend and retract. For example, when it is necessary to expand the working range, the extension arms slide within the T-slots via the T-blocks and the connecting rods rotate, allowing the extension arms to extend outward; retraction is achieved by the reverse action.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the end of the first arm 7 away from the connecting seat 6 is rotatably connected to the second gear 14, both ends of the second arm 8 are rotatably connected to the third gear 15, and the end of the third arm 9 near the second arm 8 is rotatably connected to the fourth gear 16. The second gear 14 is meshed with the corresponding third gear 15, and the fourth gear 16 is meshed with the corresponding third gear 15.

[0034] In this embodiment, the second gear 14 at the end of the first arm 7, the third gear 15 at both ends of the second arm 8, and the fourth gear 16 at the end of the third arm 9 mesh with each other to form a closed gear transmission chain. When power is input, the meshing of the gears transmits the power sequentially, causing the arms to rotate relative to each other. This, in conjunction with the T-slots, T-blocks, connecting rods, etc. in the extension structure, completes the extension and retraction of the arms.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the bottom of the first arm 7, the second arm 8 and the third arm 9 are all fixedly connected with fixed sleeves 20 at equal intervals. Spray pipes 21 are fixedly connected between the inner walls of the multiple fixed sleeves 20. Connecting pipes 22 are fixedly connected between the corresponding spray pipes 21. Spray nozzles are provided at equal intervals at the bottom of the spray pipes 21.

[0036] In this embodiment, the fixing sleeves 20 at the bottom of the first arm 7, the second arm 8, and the third arm 9 are used to secure the spray pipes 21, so that the spray pipes 21 are firmly installed under the arms. The connecting pipes 22 connect the spray pipes 21 of each arm to form a through pipeline. Pesticides are transported from the driving water pump, etc., through the pipeline to the spray pipes 21, and then atomized by the nozzles or sprayed directly to cover the weeds and other areas on both sides of the railway track.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, two drive water pumps 27 are installed and connected at the bottom of the inner wall of the transfer box 3 and on one side of the connecting seat 6. Two arc-shaped grooves 25 are opened on the side of the connecting seat 6 near the drive water pumps 27. One end of the spray pipe 21 and inside the arc-shaped groove 25 is fixedly connected to a hose 26. A connecting pipe 28 is fixedly connected between the output ends of the two drive water pumps 27, and the hoses 26 are fixedly connected to the connecting pipe 28.

[0038] In this embodiment, the water pump 27 is driven to operate and uses its own power to draw pesticides from storage containers such as the water tank 29. After the pesticides are collected through the connecting pipe 28, they are delivered to the spray pipes 21 of each extension arm through the hose 26. The arc groove 25 on the connecting seat 6 provides space for the hose 26 to move. When the extension arm extends or retracts, the hose 26 can move and bend accordingly in the arc groove 25, avoiding excessive pulling of the hose 26 due to the extension arm movement, and ensuring that the pesticide delivery path remains unobstructed.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a water storage tank 29 is fixedly connected to the top of the flatbed 2 and to one side of the transfer box 3. A delivery pipe 30 is fixedly connected between the water storage tank 29 and the input end of the drive water pump 27. The connection ends of the delivery pipe 30, the connecting pipe 28, the connecting pipe 22, the spray pipe 21 and the hose 26 are all quick connectors.

[0040] In this embodiment, the water storage tank 29 is used to store pesticides or clean water for mixing pesticides. One end of the delivery pipe 30 is connected to the outlet of the water storage tank 29, and the other end is connected to the inlet of the drive water pump 27, realizing the connection of pesticides from storage to delivery. Quick connectors are set at the connection points of the delivery pipe 30 with the drive water pump 27, the connecting pipe 28 with the spray pipe 21, etc. Through the quick plugging and unplugging function of the quick connectors, the pipe assembly and disassembly can be completed conveniently, the spraying system can be quickly set up during equipment installation, and faulty pipes can be quickly replaced during maintenance.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, two hydraulic rods 4 are installed and connected to both sides of the top of the inner wall of the transfer box 3, and baffles 5 are rotatably connected to both ends of the top of the transfer box 3. The piston rods of the hydraulic rods 4 are rotatably connected to the corresponding baffles 5.

[0042] In this embodiment, hydraulic rods 4 are installed on both sides of the top of the inner wall of the transfer box 3. The cylinder body is fixed to the inner wall of the transfer box 3, and the piston rod end is rotatably connected to the baffle plate 5. When the piston rod of the hydraulic rod 4 extends or retracts, it pushes the baffle plate 5 to rotate around the rotation connection point at the top of the transfer box 3, so that the piston rod extends when the baffle plate 5 opens, flips up when the baffle plate 5 closes, and retracts when the baffle plate 5 closes, and flips down to cover the opening of the transfer box 3. In the open state, it is convenient to operate and maintain the connecting seat 6, drive water pump 27 and other components inside the transfer box 3. In the closed state, it covers the inside of the transfer box 3 to protect the internal components from the corrosion caused by pesticide splashing and dust entering during pesticide spraying operations.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, drive motors 23 are fixedly connected to the outer sides of the second arm 8 and the third arm 9. The output shafts of the drive motors 23 are fixedly connected to the corresponding third gear 15 and fourth gear 16. The output shafts of the first arm 7 are fixedly connected to the outer sides of the first gear 10. The outer side of the connecting seat 6 is fixedly connected to a servo motor 24. The output shaft of the servo motor 24 is fixedly connected to one of the first gears 10.

[0044] In this embodiment, the output shafts of the drive motors 23 on the outer sides of the second arm 8 and the third arm 9 are fixed to the third gear 15 and the fourth gear 16 on the corresponding arms. When powered on, the drive motors 23 operate, and the output shaft rotates, driving the gears to rotate, providing power for the relative rotation between the arms. The first gear 10 on the outer side of the output shaft of the first arm 7 is fixed to the output shaft of the servo motor 24 on the outer side of the connecting seat 6. The servo motor 24 operates, driving the first gear 10 to rotate, thereby driving the first arm 7 to rotate. Together with the power of the drive motor 23, the extension and retraction of the extension structure arms are realized.

[0045] Working principle:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, two traction locomotives 1 serve as mobile carriers, providing self-wheel power to move along the railway track. The extension structure between the two traction locomotives 1, based on the sequential connection of the first extension arm 7, the second extension arm 8, and the third extension arm 9, utilizes the sliding and rotational cooperation of the first T-slot 11 with the first T-block 12 and the first connecting rod 13, and the second T-slot 17 with the second T-block 18 and the second connecting rod 19, allowing the extension arms to flexibly extend and retract. For example, when it is necessary to expand the working range, the extension arms slide within the T-slots via the T-blocks and the connecting rods rotate, enabling the extension arms to extend outward; when retracting, the opposite action occurs, with the second gear 14 at the end of the first extension arm 7, the third gear 15 at both ends of the second extension arm 8, and the fourth gear 16 at the end of the third extension arm 9 meshing to form a closed gear transmission chain. When power is input, the meshing transmission between the gears transmits power sequentially, causing the extension arms to rotate relative to each other, cooperating with the T-slots, T-blocks, and connecting rods in the extension structure to complete the extension and retraction of the extension arms.

[0047] The fixing sleeves 20 at the bottom of the first arm 7, the second arm 8, and the third arm 9 securely hold the spray pipes 21, ensuring their stable installation beneath the arms. Connecting pipes 22 connect the spray pipes 21 of each arm, forming a continuous pipeline. Pesticides are transported from the drive pump, etc., through this pipeline to the spray pipes 21, then atomized by the nozzles or sprayed directly, covering weeds and other areas along the railway tracks. The drive pump 27 operates, using its own power to draw pesticides from storage containers such as the water tank 29. The pesticides are collected via connecting pipe 28 and then transported to the spray pipes 21 of each arm through hoses 26. The arc-shaped groove 25 on the connecting seat 6 provides space for the hoses 26 to move, allowing for movement when the arms extend or retract. When retracted, the hose 26 can move and bend accordingly within the arc groove 25, avoiding excessive pulling of the hose 26 due to the extension of the arm, ensuring the continuous unobstructed flow of pesticides. The water tank 29 is used to store pesticides or clean water for mixing pesticides. One end of the delivery pipe 30 is connected to the outlet of the water tank 29, and the other end is connected to the inlet of the drive water pump 27, realizing the connection from pesticide storage to delivery. Quick connectors are set at the connection points of the delivery pipe 30 and the drive water pump 27, the connecting pipe 28 and the spraying pipe 21, etc. Through the quick plugging and unplugging function of the quick connectors, the pipe assembly and disassembly can be completed conveniently, the spraying system can be quickly set up during equipment installation, and faulty pipes can be quickly replaced during maintenance.

[0048] Hydraulic rods 4 are installed on both sides of the top of the inner wall of the transfer box 3. The cylinder body is fixed to the inner wall of the transfer box 3, and the end of the piston rod is rotatably connected to the baffle plate 5. When the piston rod of the hydraulic rod 4 extends or retracts, it pushes the baffle plate 5 to rotate around the rotating connection point at the top of the transfer box 3, so that the piston rod extends when the baffle plate 5 opens, flips the baffle plate 5 upward, retracts the piston rod when the baffle plate 5 closes, and flips the baffle plate 5 downward to cover the opening of the transfer box 3. In the open state, it is convenient to operate and maintain the connecting seat 6, drive water pump 27 and other components inside the transfer box 3. In the closed state, it covers the inside of the transfer box 3 to protect the pesticide spraying operation from splashing and dust entering. The erosion of internal components, the drive motor 23 on the outside of the second arm 8 and the third arm 9, has its output shaft fixed to the third gear 15 and the fourth gear 16 on the corresponding arm. After being powered on, the drive motor 23 runs, and the output shaft rotates to drive the gears to rotate, providing power for the relative rotation between the arms. The first gear 10 on the outside of the output shaft of the first arm 7 is fixed to the output shaft of the servo motor 24 on the outside of the connecting seat 6. The servo motor 24 runs to drive the first gear 10 to rotate, thereby driving the first arm 7 to rotate. Together with the power of the drive motor 23, they realize the extension and retraction of the extension structure arms.

[0049] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-propelled device for automatic pesticide spraying, comprising two tractor units (1), characterized in that: An extension structure is provided between the two tractor heads (1), the extension structure including a first extension arm (7), a second extension arm (8), a third extension arm (9), a first gear (10), a second gear (14), a third gear (15), a fourth gear (16), a first T-slot (11), a first T-block (12), a first connecting rod (13), a second T-slot (17), a second T-block (18), and a second connecting rod (19); A flatbed cart (2) is installed and connected between the two tractor heads (1). A transfer box (3) is provided on the top of the flatbed cart (2). A connecting seat (6) is fixedly connected to the bottom of the inner wall of the transfer box (3). Two first extension arms (7) are rotatably connected inside the connecting seat (6). A first T-slot (11) is opened on one side of each of the first extension arms (7). A first T-block (12) is slidably connected inside the first T-slot (11). A first connecting rod (13) is rotatably connected between one side of the second extension arm (8) and the corresponding first T-block (12). A second T-slot (17) is opened on one side of each of the second extension arms (8). A second T-block (18) is slidably connected inside the second T-slot (17). A second connecting rod (19) is rotatably connected between the third extension arm (9) and the corresponding second T-block (18).

2. The self-propelled device for automatic pesticide spraying according to claim 1, characterized in that: The first arm (7) is rotatably connected to a second gear (14) at the end away from the connecting seat (6), the second arm (8) is rotatably connected to a third gear (15) at both ends, and the third arm (9) is rotatably connected to a fourth gear (16) at the end near the second arm (8). The second gear (14) is meshed with the corresponding third gear (15), and the fourth gear (16) is meshed with the corresponding third gear (15).

3. The self-propelled device for automatic pesticide spraying according to claim 1, characterized in that: The bottom of the first arm (7), the second arm (8) and the third arm (9) are all fixedly connected with fixed sleeves (20) at equal intervals. Spray pipes (21) are fixedly connected between the inner walls of the multiple fixed sleeves (20). Connecting pipes (22) are fixedly connected between the spray pipes (21). Spray nozzles are provided at equal intervals at the bottom of the spray pipes (21).

4. A self-propelled device for automatic pesticide spraying according to claim 3, characterized in that: Two drive water pumps (27) are installed and connected at the bottom of the inner wall of the transfer box (3) and on one side of the connecting seat (6). Two arc-shaped grooves (25) are opened on the side of the connecting seat (6) near the drive water pumps (27). One end of the spray pipe (21) and inside the arc-shaped groove (25) is fixedly connected to a hose (26). A connecting pipe (28) is fixedly connected between the output ends of the two drive water pumps (27). The hoses (26) are all fixedly connected to the connecting pipe (28).

5. A self-propelled device for automatic pesticide spraying according to claim 1, characterized in that: A water storage tank (29) is fixedly connected to the top of the cart (2) and to one side of the transfer box (3). A delivery pipe (30) is fixedly connected between the water storage tank (29) and the input end of the drive water pump (27). The connection ends of the delivery pipe (30), the connecting pipe (28), the connecting pipe (22), the spray pipe (21), and the hose (26) are all quick connectors.

6. A self-propelled device for automatic pesticide spraying according to claim 1, characterized in that: Two hydraulic rods (4) are installed and connected on both sides of the top of the inner wall of the transfer box (3). Both ends of the top of the transfer box (3) are rotatably connected to the baffle plate (5). The piston rods of the hydraulic rods (4) are rotatably connected to the corresponding baffle plate (5).

7. A self-propelled device for automatic pesticide spraying according to claim 1, characterized in that: The second arm (8) and the third arm (9) are both fixedly connected to a drive motor (23). The output shaft of the drive motor (23) is fixedly connected to the corresponding third gear (15) and fourth gear (16). The output shaft of the first arm (7) is fixedly connected to a first gear (10). The outer side of the connecting seat (6) is fixedly connected to a servo motor (24). The output shaft of the servo motor (24) is fixedly connected to one of the first gears (10).

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