A kind of fungal control spraying device for spodoptera litura

Abstract

The application discloses a kind of fungal prevention and treatment spraying devices of Spodoptera litura, belong to agricultural biological control equipment technical field, including display mechanism, spraying mechanism and advancing mechanism.The display mechanism includes fixed frame and two horizontally arranged support beams extending in opposite directions.The advancing mechanism includes a push handle and a main roller assembly, allowing the operator to easily push the device in the field.The spraying mechanism includes a medicine box for storing fungal liquid and several spraying support assemblies distributed on the support beams, the spraying support assemblies include fan-shaped atomizing nozzles that are in communication with the medicine box through a medicine pipe.The application uses the support beam extension structure with multiple nozzles to achieve large-scale, uniform and efficient spraying of fungal pesticides on field crops, effectively improving the efficiency and effectiveness of Spodoptera litura biological control.

Description

Technical Field

[0001] This invention belongs to the field of agricultural biological control equipment technology, specifically relating to a fungal control spraying device for beet armyworm. Background Technology

[0002] The beet armyworm (Spodoptera litura) is a globally distributed omnivorous and voracious agricultural pest belonging to the Noctuidae family of Lepidoptera. Its larvae can damage over 389 host plant species, including sweet potato, cotton, tobacco, and corn, often leading to bare leaves and even crop failure, posing a serious threat to agricultural production. This insect has multiple generations per year (4-8 generations), high reproductive capacity, significant migratory activity, and a tendency to develop resistance to pesticides, making chemical control increasingly difficult. Against this backdrop, biological control has gained widespread attention due to its environmental friendliness and low resistance rate, with the application of entomopathogenic fungi being particularly prominent. For example, at appropriate concentrations, *Metarhizium anisopliae* can achieve a corrected mortality rate of over 85% for 2nd-3rd instar larvae of the beet armyworm; strains such as *Beauveria bassiana* have also shown high pathogenicity, causing larval death through ectodermal infection, and have become key means of green control.

[0003] Despite the promising prospects of fungal biological control technology, its practical application effectiveness remains limited by the efficiency and uniformity of application methods. Traditional manual spraying suffers from high labor intensity, limited coverage, and poor atomization, making it difficult to ensure uniform adhesion of fungal conidia to crop leaves and affecting infection efficiency. In recent years, drone-based aerial spraying technology has improved application efficiency, but its flexibility in small-scale mountainous fields is insufficient, and its cost is high. Furthermore, fungal agents themselves have weaknesses such as slow insecticidal speed and poor environmental stability. If the application equipment cannot achieve precise atomization and wide coverage, the control effect will be further restricted. Therefore, developing a specialized device that can adapt to complex field terrain and achieve efficient and uniform spraying of fungal agents is of great significance for improving the reliability and promotion value of biological control of beet armyworm. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a fungal control spraying device for beet armyworm, which solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention includes a display stand mechanism, a spraying mechanism, and a traveling mechanism; The display stand mechanism includes a fixed frame and two horizontally arranged support beams, one end of each support beam being fixed to both sides of the fixed frame and extending in opposite directions; The traveling mechanism includes a push handle and a main roller assembly. The main roller assembly is fixedly mounted on the lower side of the fixed frame. The roller axis of the main roller assembly is parallel to the support beam. The push handle is fixedly connected to the fixed frame and is located on one side of the support beam. The spraying mechanism includes a medicine tank for storing fungal liquid and several spraying support components. The medicine tank is fixedly installed on the fixed frame, and the several spraying support components are distributed on the support beam. Each spraying support component includes a nozzle and a medicine pipe. The nozzle is located below the support beam, and one end of the medicine pipe is connected to the medicine tank, and the other end is connected to the nozzle.

[0006] Optionally, the spraying mechanism further includes several hinge components, and the spraying support component further includes a transverse sliding seat. The transverse sliding seat near one end of the fixed frame is fixed to the end of the support beam, and the remaining transverse sliding seats are movably disposed on the support beam. The hinge component includes two hinge rods with hinged ends, and the two ends of the hinge component are respectively hinged between adjacent transverse sliding seats.

[0007] Optionally, the spraying mechanism further includes two lateral traction components, which are driven by a motor and respectively mounted on the two support beams. The lateral traction components are fixedly connected to the lateral sliding seats that move at the far end of the support beams.

[0008] Optionally, the support beam has a through rail groove extending vertically, and the two inner sides of the rail groove have inward sliding grooves. The cross-section of the transverse sliding seat is T-shaped, and the two ends of the transverse sliding seat are slidably disposed in the sliding grooves. The transverse traction assembly includes a transverse sliding housing and a transverse sliding gear driven by a motor. The housing is slidably disposed in the rail groove, and the transverse sliding gear is rotatably disposed in the housing. The transverse sliding gear meshes with the inner side of one of the sliding grooves.

[0009] Optionally, the traveling mechanism further includes two auxiliary roller assemblies, which are respectively fixedly disposed on the lower side of the two lateral traction assemblies. The rollers of the auxiliary roller assemblies and the rollers of the main roller assembly are located on the front and rear sides below the support beam, respectively.

[0010] Optionally, the spraying mechanism further includes a vertical adjustment component, which includes a vertical moving beam. The display frame mechanism also includes guide columns, with a guide column fixedly mounted at both ends of each support beam. The two ends of the vertical moving beam are slidably mounted on the guide columns. The spraying support component also includes a vertical rod, which is vertically slidably mounted on the transverse sliding seat. The nozzle is located at the lower end of the vertical rod, and the upper end of the vertical rod is horizontally slidably mounted on the vertical moving beam.

[0011] Optionally, the vertical adjustment assembly further includes a vertical adjustment base, a lead screw, and a vertical moving seat. The vertical adjustment base is fixed to the middle side of the support beam. The lead screw is rotatably mounted on the vertical adjustment base by a motor and extends upward from the vertical adjustment base. The vertical moving seat is threadedly connected to the lead screw and is fixedly connected to the vertical moving beam.

[0012] Optionally, the spraying mechanism further includes an angle adjustment assembly, which includes an angle adjustment beam. Both ends of the angle adjustment beam are slidably mounted on the guide posts. The angle adjustment beam is located above the vertically moving beam. The spraying support assembly further includes an angle adjustment vertical plate, a rotating shaft, an adjusting gear, and an adjusting toothed plate. The angle adjustment vertical plate is vertically slidably mounted on one side of the vertical rod. The rotating shaft is rotatably mounted at the bottom end of the vertical rod and is horizontal. The adjusting gear is coaxially fixed to one end of the rotating shaft, and the nozzle is fixed to the other end of the rotating shaft, with the nozzle's orientation perpendicular to the rotating shaft. The adjusting toothed plate is fixed to the bottom side of the adjusting vertical plate and meshes with the adjusting gear. The upper end of the adjusting vertical plate is slidably mounted on the angle adjustment beam.

[0013] Optionally, the angle adjustment assembly further includes a telescopic cylinder, which is fixed to the upper side of the vertical moving beam, and the upper end of the telescopic cylinder is fixedly connected to the angle adjustment beam.

[0014] Optionally, the spraying mechanism further includes a pressure pump, a main pipeline, and pipeline fixing components. The pressure pump is connected to the medicine tank, the main pipeline is connected to the output end of the pressure pump, and the pipeline fixing components are used to fix the main pipeline. The pipeline fixing components are respectively fixed to the transverse sliding seat and the hinge rod, and the medicine tubes are respectively connected to the main pipeline.

[0015] The beneficial effects of this invention are as follows: During operation, the user holds the handle and pushes the device forward in the field. The main roller assembly rolls forward, and the pressure pump delivers the fungal pesticide solution in the tank to each nozzle through the pesticide pipe. After being atomized, the solution is sprayed onto the crops. The structural design of the support beam and multiple nozzles allows the spraying range to cover the entire crop on both sides of the field path, achieving a good biological control effect on the feeding beet armyworm larvae. Compared with manual spraying, this spraying device has a faster spraying speed, wider coverage, higher efficiency, and more uniform pesticide application on the crops, resulting in consistent effects. This device realizes the large-scale, high-efficiency mechanized application of fungal biological pesticides, which helps promote the green and sustainable control of agricultural pests.

[0016] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 A schematic diagram of the overall structure of the spraying device according to an embodiment of the invention; Figure 2 A schematic diagram of the internal structure of the spray support assembly at the support beam in this embodiment of the invention; Figure 3 A schematic diagram of the internal structure of the vertical adjustment component according to an embodiment of the present invention; Figure 4 A schematic diagram of the nozzle structure of the spray support assembly according to an embodiment of the invention; Figure 5 A schematic diagram of the structure of the fixing frame in this embodiment of the invention; The attached diagram is labeled as follows: 1. Display stand mechanism; 11. Fixing frame; 12. Support beam; 13. Guide column; 121. Track groove; 122. Slide groove; 2. Spraying mechanism; 21. Medicine tank; 22. Spraying support assembly; 221. Nozzle; 222. Medicine tube; 223. Horizontal sliding seat; 224. Vertical rod; 225. Angle adjustment vertical plate; 226. Rotating shaft; 227. Adjusting gear; 228. Adjusting toothed plate; 23. Hinge assembly; 231. Hinge rod; 2 4. Lateral traction assembly; 241. Housing; 242. Lateral gear; 25. Vertical adjustment assembly; 251. Vertical moving beam; 252. Vertical adjustment base; 253. Lead screw; 254. Vertical moving seat; 26. Angle adjustment assembly; 261. Angle adjusting beam; 262. Telescopic cylinder; 27. Pressure pump; 28. Main pipeline; 29. ​​Pipeline fastener; 3. Traveling mechanism; 31. Push handle; 32. Main roller assembly; 33. Auxiliary roller assembly. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0019] Please see Figures 1-5It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0020] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0021] This invention provides a fungal control spraying device for the beet armyworm, aiming to achieve biological control of the beet armyworm through efficient and uniform spraying of fungal agents. Figure 1As shown, the system includes a display stand mechanism 1, a spraying mechanism 2, and a traveling mechanism 3. The display stand mechanism 1 includes a fixed frame 11 and two horizontally arranged support beams 12. The fixed frame 11 is welded from lightweight stainless steel and has an overall cubic frame structure. One end of each of the two support beams 12 is fixed to both sides of the fixed frame 11 and extends in opposite directions. The two support beams 12 are located on the same extension line. The traveling mechanism 3 includes a push handle 31 and a main roller assembly 32. The main roller assembly 32 is fixedly installed on the lower side of the fixed frame 11 by bolts. The roller shaft 226 of the main roller assembly 32 is parallel to the support beams 12. The main roller assembly 32 uses inflatable rubber wheels with anti-slip surfaces. Each roller is equipped with a ball bearing to ensure smooth rotation. The push handle 31 is a steel pipe structure. The push handle 31 is fixedly connected to the fixed frame 11 and is located on one side of the support beams 12. The push handle 31 can be fitted with an anti-slip rubber sleeve. The design of the entire traveling mechanism 3 allows the operator to easily push the equipment forward in the field. The spraying mechanism 2 includes a medicine tank 21 for storing fungal liquid and several spraying support components 22. The medicine tank 21 has a volume of 50 liters and is made of high-density polyethylene material. The medicine tank 21 is fixedly installed in the center of the fixed frame 11 and reinforced by straps. The top of the medicine tank 21 is provided with a liquid inlet with a filter screen, and the bottom is provided with a liquid outlet. Several spraying support components 22 are distributed on the support beam 12. The spraying support component 22 includes a nozzle 221 and a medicine tube 222. The nozzle 221 is located below the support beam 12 and is a fan-shaped atomizing nozzle 221. The medicine tube 222 is a corrosion-resistant plastic hose with an inner diameter. One end of the medicine tube 222 is connected to the medicine tank 21, and the other end is connected to the nozzle 221. The medicine liquid is transported from the medicine tank 21 to each nozzle 221 by a pressure pump 27.

[0022] In practical applications of this device, the fungal liquid stored in the medicine tank 21 can be, for example, a suspension of Metarhizium anisopliae spores with the addition of a suspending agent; or it can be a diluted wettable powder of Beauveria bassiana. These pathogenic fungi have high pathogenicity against Spodoptera litura larvae. During operation, the user holds the push handle 31 and pushes the device through the field. The main roller assembly 32 rolls forward, and the pressure pump 27 pumps the fungal liquid in the medicine tank 21 through the medicine pipe 222 to each nozzle 221. After the liquid is atomized, it is sprayed onto the crops. The structural design of the support beam 12 and multiple nozzles 221 allows the spraying range to cover the entire crop on both sides of the field path, achieving a good biological control effect on feeding Spodoptera litura larvae. Compared with manual spraying, this spraying device has a fast spraying speed, wide range, high efficiency, and uniform drug coverage on the sprayed crops, resulting in consistent effects. This device realizes the large-scale, high-efficiency mechanized application of fungal biological pesticides, which helps to promote the green and sustainable control of agricultural pests.

[0023] In further proposals, such as Figure 1 and Figure 2 As shown, the spraying mechanism 2 also includes several hinge components 23, and the spraying support component 22 includes a transverse sliding seat 223. The transverse sliding seat 223 near the fixed frame 11 is fixed to the end of the support beam 12 by bolts, and the other transverse sliding seats 223 away from the fixed frame 11 are movably mounted on the support beam 12 by wheel support. The hinge component 23 includes two hinge rods 231 that are hinged to each other by a pin, forming a V-shaped opening and closing structure. The two ends of the hinge component 23 are rotatably connected between two adjacent transverse sliding seats 223 by pins. The spraying mechanism 2 also includes two transverse traction components 24, which are driven by a motor and moved on the two rods respectively. On the support beam 12, the lateral traction assembly 24 is fixedly connected to the transverse sliding seat 223 that moves at the far end on the support beam 12. The support beam 12 has a through rail groove 121 extending vertically. The two inner sides of the rail groove 121 have inward sliding grooves 122. The transverse sliding seat 223 has a T-shaped cross-section, and both ends of the transverse sliding seat 223 are slidably disposed in the sliding grooves 122. The lateral traction assembly 24 includes a transverse sliding housing 241 and a transverse sliding gear 242 driven by a motor. The housing 241 is slidably disposed in the rail groove 121, and the transverse sliding gear 242 is rotatably disposed in the housing 241. The transverse sliding gear 242 meshes with the inner side of one of the sliding grooves 122.

[0024] In this structure, the motor in the lateral traction component 24 rotates, driving the lateral shift gear 242 to mesh with the inner side of the slide groove 122, causing the lateral traction component 24 to move on the support beam 12. Through the pushing and pulling action of the hinge rod 231, the force is transmitted to the adjacent lateral shift seats 223, which helps to synchronously and equally change the spacing between multiple adjacent nozzles 221, ensuring that the nozzles 221 are evenly distributed and well matched with the crop row spacing. The hinge component 23 forms a stable flexible connection between adjacent lateral shift seats 223. This design allows the spraying mechanism 2 to adapt to different operating width requirements. By increasing or decreasing the number of lateral shift seats 223 and hinge components 23, the overall spraying width can be expanded or reduced within a certain range.

[0025] With the above structure, the operator can quickly and evenly adjust the spacing of all nozzles 221 before entering fields with different planting patterns, so that they are precisely aligned with the crop rows. This not only improves the uniformity of fungicide coverage and control effect and reduces waste of pesticide, but also enhances the adaptability of the equipment to different agricultural operation scenarios.

[0026] In further proposals, such as Figure 1 and Figure 2As shown, the traveling mechanism 3 also includes two auxiliary roller assemblies 33. The two auxiliary roller assemblies 33 are respectively fixedly installed on the lower side of the two transverse traction assemblies 24. The rollers of the auxiliary roller assemblies 33 and the rollers of the main roller assembly 32 are located on the front and rear sides below the support beam 12, respectively, so that the supporting rollers are distributed in front and behind in space.

[0027] In this structure, the auxiliary rollers and main rollers together form a three-point support structure. When the operator adjusts the coverage width of the nozzle 221 using the lateral traction component 24, the auxiliary roller assembly 33 fixed to its lower side will move synchronously. After adjustment, these auxiliary rollers can stably support other work paths or furrows in the field, forming a multi-point wide-base support together with the main rollers. This improves the overall stability of the equipment when moving or spraying on uneven ground in the field, avoids the risk of tilting or tipping over, and ensures operational safety. The auxiliary roller assembly 33 also shares part of the equipment's weight and load, working in conjunction with the main rollers to reduce slippage of the main rollers in muddy or loose soil, making traction and movement more effortless and stable, especially suitable for use in various complex field conditions. The auxiliary rollers help optimize the overall weight distribution of the equipment, reduce the pushing force required when operating the push handle 31, making operation more flexible and convenient, and helping to reduce the operator's labor intensity. The addition of the roller assembly significantly enhances the mobility, safety, and ease of operation of this mobile spraying device in complex farmland environments by improving stability, traction, and optimizing weight distribution.

[0028] In further proposals, such as Figure 1 and Figure 3 As shown, the spraying mechanism 2 further includes a vertical adjustment component 25, which includes a vertical moving beam 251. The display frame mechanism 1 also includes guide columns 13. Each of the two ends of the support beam 12 is fixedly provided with a guide column 13. The two ends of the vertical moving beam 251 are slidably disposed on the guide columns 13. The spraying support component 22 also includes a vertical rod 224, which is vertically slidably disposed on the horizontal moving seat 223. The nozzle 221 is located at the lower end of the vertical rod 224, and the upper end of the vertical rod 224 is horizontally disposed. The vertical adjustment assembly 25 is slidably mounted on the vertical moving beam 251. The vertical adjustment assembly 25 also includes a vertical adjustment base 252, a lead screw 253, and a vertical moving seat 254. The vertical adjustment base 252 is fixed to the middle side of the support beam 12. The lead screw 253 is rotatably mounted on the vertical adjustment base 252 by a motor. The lead screw 253 extends upward from the vertical adjustment base 252. The vertical moving seat 254 is threadedly connected to the lead screw 253 and is fixedly connected to the vertical moving beam 251.

[0029] This solution utilizes the vertical adjustment component 25 to adjust the height of the nozzles 221, enhancing the equipment's adaptability to crops of varying heights and ensuring the precision and effectiveness of fungicide spraying. The motor-driven lead screw 253 raises and lowers the vertical moving beam 251 along the guide column 13, allowing for overall adjustment of the basic operating height of all nozzles 221. The independent vertical sliding of the vertical rod 224 on the transverse sliding seat 223 and its lateral sliding connection with the vertical moving beam 251 further allow for fine-tuning of the final height of each nozzle 221. This design enables the nozzles 221 to be flexibly positioned according to the actual plant height in the field, maintaining the optimal distance between the nozzles 221 and the crop. This not only ensures that fungal droplets effectively cover the crop canopy, increasing the contact opportunity between spores and pests, but also avoids pesticide dispersion or uneven deposition due to height mismatch. Therefore, while expanding the equipment's application range, it significantly improves the fungal control effect against the beet armyworm and reduces pesticide waste. In further proposals, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the spraying mechanism 2 further includes an angle adjustment assembly 26, which includes an angle adjustment beam 261. The two ends of the angle adjustment beam 261 are slidably mounted on the guide post 13. The angle adjustment beam 261 is located above the vertical moving beam 251. The spraying support assembly 22 also includes an angle adjustment vertical plate 225, a rotating shaft 226, an adjusting gear 227, and an adjusting toothed plate 228. The angle adjustment vertical plate 225 is vertically slidably mounted on one side of the vertical rod 224. The rotating shaft 226 is rotatably mounted at the bottom end of the vertical rod 224 and is horizontal. The adjusting gear 227 is coaxially fixed at one end of the rotating shaft 226, and the nozzle 221 is fixed at the other end of the rotating shaft 226. The nozzle 221 is perpendicular to the rotating shaft 226. The adjusting toothed plate 228 is fixed to the bottom side of the adjusting vertical plate. The adjusting toothed plate 228 meshes with the adjusting gear 227. The upper end of the adjusting vertical plate is slidably mounted on the angle adjusting beam 261. The angle adjusting assembly 26 also includes a telescopic cylinder 262, which is fixed to the upper side of the vertical moving beam 251. The upper end of the telescopic cylinder 262 is fixedly connected to the angle adjusting beam 261.

[0030] The added spraying mechanism 2 angle adjustment component 26 in this scheme, through a multi-stage linkage mechanical structure, enables the control of the spraying angle of the nozzle 221. This function is crucial for improving the effectiveness of fungal control of beet armyworm: the telescopic cylinder 262 drives the angle adjustment beam 261 to move vertically up and down along the guide column 13, which in turn drives the adjustment toothed plate 228 to move through the angle adjustment vertical plate 225; the adjustment toothed plate 228 meshes with the adjustment gear 227 fixed at one end of the rotating shaft 226, which can convert the linear motion of the adjustment vertical plate into the horizontal rotation of the rotating shaft 226, ultimately causing the nozzle 221 fixed at the other end of the rotating shaft 226 to deflect and change its horizontal spraying direction. This design allows the operator to perform directional spraying on different locations between crop rows, such as the front and back of leaves or gaps between plants, especially to accurately cover the fungal solution to the hidden parts such as the underside of leaves where beet armyworm larvae like to hide, significantly increasing the chance of contact between pathogen spores and pests. Meanwhile, this component works in conjunction with the previously mentioned vertical and horizontal adjustment mechanisms to form a complete system that can flexibly adjust the position and orientation of the nozzle 221 in three-dimensional space. This enhances the equipment's adaptability to different crop canopy structures, planting row spacing, and complex field environments, effectively avoids blind spots in pesticide spraying, reduces pesticide waste, and thus improves the uniformity, penetration, and final control effect of the overall control operation.

[0031] In further proposals, such as Figure 1 and Figure 5 The spraying mechanism 2 also includes a main pipe 28 and a pipe fixing component 29. The pressurizing pump 27 is connected to the medicine tank 21. The main pipe 28 is connected to the output end of the pressurizing pump 27. The pipe fixing component 29 is used to fix the main pipe 28. The pipe fixing component 29 is fixed to the transverse sliding seat 223 and the hinge rod 231 respectively. The medicine tube 222 is connected to the main pipe 28 respectively.

[0032] In this scheme, the main pipeline 28 serves as the main water delivery path and is connected to the output end of the booster pump 27. Through a reasonable distribution of pipeline fixing parts 29, the pipeline fixing parts 29 are respectively fixed to the transverse sliding seat 223 and the hinge rod 231, which realizes the firm support of the pipeline. This fixing method effectively suppresses the pressure loss and abnormal wear caused by pipeline shaking and sagging during equipment movement or adjustment, ensuring the stability of the liquid delivery and the durability of the system. At the same time, each medicine pipe 222 is connected to the main pipeline 28, forming a distributed delivery network under a unified pressure source, enabling all nozzles 221 to work under isobaric conditions, achieving efficient and uniform application of fungal agents.

[0033] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A fungal control spraying device for the beet armyworm, characterized in that: It includes a display stand mechanism (1), a spraying mechanism (2), and a traveling mechanism (3); The display stand mechanism (1) includes a fixed frame (11) and two horizontally arranged support beams (12), one end of each of the two support beams (12) is fixed to both sides of the fixed frame (11) and extends in opposite directions; The traveling mechanism (3) includes a push handle (31) and a main roller assembly (32). The main roller assembly (32) is fixedly disposed on the lower side of the fixed frame (11). The roller shaft (226) of the main roller assembly (32) is parallel to the support beam (12). The push handle (31) is fixedly connected to the fixed frame (11). The push handle (31) is located on one side of the support beam (12). The spraying mechanism (2) includes a medicine tank (21) for storing fungal liquid and several spraying support components (22). The medicine tank (21) is fixedly installed on the fixed frame (11). Several spraying support components (22) are distributed on the support beam (12). Each spraying support component (22) includes a nozzle (221) and a medicine pipe (222). The nozzle (221) is located below the support beam (12). One end of the medicine pipe (222) is connected to the medicine tank (21), and the other end is connected to the nozzle (221). The spraying mechanism (2) also includes several hinge components (23), and the spraying support component (22) also includes a transverse seat (223). The transverse seat (223) near the fixed frame (11) is fixed to the end of the support beam (12), and the remaining transverse seats (223) are movably arranged on the support beam (12). The hinge component (23) includes two hinge rods (231) with hinged ends. The two ends of the hinge component (23) are respectively hinged between adjacent transverse seats (223). The spraying mechanism (2) also includes two lateral traction components (24), which are driven by a motor and respectively moved on the two support beams (12). The lateral traction components (24) are fixedly connected to the transverse shift seat (223) that moves at the far end on the support beam (12). The support beam (12) has a through rail groove (121) extending vertically. The two inner sides of the rail groove (121) have inward sliding grooves (122). The transverse shift seat (223) has a T-shaped cross section. The two ends of the transverse shift seat (223) are slidably disposed in the sliding grooves (122). The transverse traction assembly (24) includes a transverse shift housing (241) and a transverse shift gear (242) driven by a motor. The housing (241) is slidably disposed in the rail groove (121). The transverse shift gear (242) is rotatably disposed in the housing (241). The transverse shift gear (242) meshes with the inner side of one of the sliding grooves (122). The traveling mechanism (3) also includes two auxiliary roller assemblies (33), which are respectively fixedly installed on the lower side of the two lateral traction assemblies (24). The rollers of the auxiliary roller assemblies (33) and the rollers of the main roller assembly (32) are respectively located on the front and rear sides below the support beam (12). The spraying mechanism (2) also includes a vertical adjustment component (25), which includes a vertical moving beam (251). The display frame mechanism (1) also includes a guide column (13). Each of the support beams (12) has a guide column (13) fixedly mounted at both ends. The two ends of the vertical moving beam (251) are slidably mounted on the guide column (13). The spraying support component (22) also includes a vertical rod (224), which is slidably mounted on the horizontal moving seat (223). The nozzle (221) is located at the lower end of the vertical rod (224), and the upper end of the vertical rod (224) is slidably mounted on the vertical moving beam (251). The vertical adjustment assembly (25) further includes a vertical adjustment base (252), a lead screw (253), and a vertical moving seat (254). The vertical adjustment base (252) is fixed to the middle side of the support beam (12). The lead screw (253) is driven by a motor to rotate on the vertical adjustment base (252). The lead screw (253) extends upward from the vertical adjustment base (252). The vertical moving seat (254) is threadedly connected to the lead screw (253). The vertical moving seat (254) is fixedly connected to the vertical moving beam (251). The spraying mechanism (2) further includes an angle adjustment assembly (26), which includes an angle adjustment beam (261). The two ends of the angle adjustment beam (261) are slidably mounted on the guide post (13). The angle adjustment beam (261) is located above the vertical moving beam (251). The spraying support assembly (22) further includes an angle adjustment vertical plate (225), a rotating shaft (226), an adjustment gear (227), and an adjustment toothed plate (228). The angle adjustment vertical plate (225) is vertically slidably mounted on one side of the vertical rod (224). The rotating shaft (226) is rotatably mounted at the bottom end of the vertical rod (224). The rotating shaft (226) is horizontal. The adjusting gear (227) is coaxially fixed at one end of the rotating shaft (226). The nozzle (221) is fixed at the other end of the rotating shaft (226). The nozzle (221) is perpendicular to the rotating shaft (226). The adjusting tooth plate (228) is fixed to the bottom side of the adjusting vertical plate. The adjusting tooth plate (228) meshes with the adjusting gear (227). The upper end of the adjusting vertical plate is slidably mounted on the angle adjusting beam (261). The angle adjustment assembly (26) also includes a telescopic cylinder (262), which is fixed on the upper side of the vertical moving beam (251), and the upper end of the telescopic cylinder (262) is fixedly connected to the angle adjustment beam (261).

2. The fungal control spraying device for the beet armyworm according to claim 1, characterized in that: The spraying mechanism (2) also includes a pressure pump (27), a main pipe (28) and a pipe fixing component (29). The pressure pump (27) is connected to the medicine tank (21). The main pipe (28) is connected to the output end of the pressure pump (27). The pipe fixing component (29) is used to fix the main pipe (28). The pipe fixing component (29) is fixed on the transverse seat (223) and the hinge rod (231) respectively. The medicine tube (222) is connected to the main pipe (28) respectively.

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