Spraying device for crops

Abstract

The utility model provides a crop pesticide spraying device. The crop pesticide spraying device comprises a movable frame, a pesticide liquid storage and delivery assembly, a first pesticide spraying device, a second pesticide spraying device, a lifting turnover mechanism and a hand-cranking winding drum assembly. The pesticide liquid storage and delivery assembly is arranged on the movable frame and used for storing pesticide liquid and supplying the pesticide liquid to the first pesticide spraying device and the second pesticide spraying device. A lifting turnover mechanism is arranged behind the movable frame, the first pesticide spraying device is a spraying rod device capable of spraying pesticide liquid in multiple positions, and the first pesticide spraying device is arranged on the lifting turnover mechanism and can achieve height adjustment and turnover angle adjustment under the control of the lifting turnover mechanism; the second pesticide spraying device is an atomizing spray gun device used for manually controlling pesticide liquid spraying. The spraying angle and height position can be flexibly changed, and the effective coverage range of spraying and the flexibility degree of operation can be improved.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery and equipment technology, and in particular to a crop spraying device. Background Technology

[0002] With the continuous improvement of agricultural mechanization, spraying devices have been widely promoted and applied in crop pest and disease control, fertilization, and plant protection. In order to improve field spraying efficiency, portable, self-propelled, and multi-functional integrated spraying equipment is constantly being developed to achieve adaptable operations for different types of crops and meet diverse agronomic needs.

[0003] Most existing spraying equipment uses a frame structure to house a liquid storage system, a liquid supply system, and a spraying device. Some devices are equipped with a spray boom or spray gun for spraying the pesticide solution. In field operations, these devices are mostly controlled manually, with the spray boom or spray gun used to distribute the pesticide solution. The spray coverage area mainly depends on the length of the spray boom and the arrangement of the nozzles. Because the spraying mechanism is relatively fixed, it is often difficult to meet the operational needs of different crops, different field types, or complex terrain conditions.

[0004] In practical use, it has been found that current spraying devices generally lack sufficient multi-directional adjustment capabilities. When faced with different crop heights, planting methods, or field obstacles, existing devices struggle to quickly adjust the position and orientation of the spraying components, resulting in limited spray coverage and numerous blind spots. Therefore, there is an urgent need to improve the adaptability of the spraying execution unit in various scenarios. Utility Model Content

[0005] This application provides a crop spraying device to solve the problem that existing spraying devices lack the ability to flexibly and reliably adjust the spraying area during operation, making it difficult to adapt to various spraying environments.

[0006] To address the aforementioned problems, this application provides a crop spraying device, comprising a mobile frame, a pesticide storage and delivery assembly, a first spraying device, a second spraying device, a lifting and tilting mechanism, and a hand-cranked drum assembly;

[0007] The liquid medicine storage and delivery assembly is mounted on a mobile frame and is used for storing liquid medicine and supplying liquid medicine to the first and second spraying devices. A lifting and tilting mechanism is provided at the rear of the mobile frame. The first spraying device is a spray bar device capable of spraying liquid medicine at multiple positions. The first spraying device is mounted on the lifting and tilting mechanism and can be adjusted in height and tilting angle under the control of the lifting and tilting mechanism. The second spraying device is an atomizing spray gun device for manually controlling liquid medicine spraying. A hand-cranked drum assembly is mounted on the upper middle part of the mobile frame via a bracket. A first infusion hose is wound on the hand-cranked drum assembly, and one end of the first infusion hose is connected to the second spraying device.

[0008] In one optional embodiment, the first spraying device includes a horizontally arranged spray bar for spraying pesticide liquid and a second infusion hose connected to the spray bar, wherein a plurality of atomizing nozzles are provided on the bar wall.

[0009] In one alternative embodiment, the second spraying device includes a manually operated atomizing spray gun connected to a first infusion hose.

[0010] In one optional embodiment, the lifting and tilting mechanism includes a vertically arranged guide bracket and a sliding frame that slides with the guide bracket;

[0011] The guide bracket is vertically fixedly connected to the upper rear of the mobile frame. A sliding frame capable of lifting and lowering is slidably connected to the upper part of the guide bracket. A first electric push rod is installed between the top of the sliding frame and the bottom of the guide bracket. The sliding frame can be lifted and lowered under the drive of the first electric push rod. Two sprockets arranged left and right are installed at the top of the sliding frame, and chains are guided and connected to the two sprockets. A mounting frame is slidably connected to the lower part of the guide bracket. The upper part of the mounting frame is connected to one end of two chains respectively and can be lifted and lowered under the action of the chains. A horizontal bracket is fixedly connected to one side of the upper part of the guide bracket, and the other ends of the two chains are connected to the horizontal bracket. An adjusting frame is hinged to the lower end of the mounting frame. A second electric push rod for driving the adjusting frame to rotate is provided between the adjusting frame and the mounting frame. A first spraying device is connected to the adjusting frame on the side away from the mounting frame.

[0012] In one optional embodiment, the hand-cranked drum assembly includes a drum body located on a bracket, a drum shaft coaxially arranged with the drum body, and a hand crank fixedly installed at one end of the drum shaft, wherein the drum shaft is rotatably mounted on the bracket.

[0013] The first infusion tubing is wound around the outer circumference of the reel body, and the reel shaft is rotatably mounted on the bracket via a bearing structure on the bracket. The first infusion tubing is connected to the drug delivery assembly.

[0014] In one optional embodiment, the drug storage and delivery assembly includes a drug storage tank disposed in the middle of the mobile frame, a pressure pump connected to the drug storage tank via a pipeline, and an output pipeline connected to the output end of the pressure pump. The output pipeline is connected to a T-connector and is connected to a first infusion hose and a second infusion hose respectively via the T-connector. An injection port is also provided on one side of the upper part of the drug storage tank, and a cap is provided on the injection port.

[0015] In one alternative embodiment, the support is further provided with a placement tube for placing a second spraying device.

[0016] In one optional embodiment, the spray bar includes a left spray bar, a right spray bar, and a middle spray bar. The two ends of the middle spray bar are respectively provided with internal thread structures, and the ends of the left and right spray bars are respectively provided with external thread structures that engage with the threaded middle spray bar. The left and right spray bars are connected to the left and right ends of the middle spray bar by threaded connection, forming an integrally detachable segmented spray bar structure. When the middle spray bar is not connected to the left or right spray bar, the two ends of the middle spray bar can be sealed by end plugs with external threads. Multiple atomizing nozzles are provided on the bar walls of the left and right spray bars.

[0017] In one optional embodiment, the bottom end of the mobile frame is provided with a moving wheel, the front of the mobile frame is provided with an engine that drives the mobile frame to move through the moving wheel, and the support is also provided with an operation panel, which is provided with operation buttons that can control the first electric push rod and the second electric push rod.

[0018] In one optional embodiment, a protective bracket is provided around the periphery of the medicine storage tank. The protective bracket is fixedly connected to the mobile vehicle frame. A support plate is fixedly installed at the top of the protective bracket, which is located above the medicine storage tank. The pressure pump is fixedly installed on the support plate.

[0019] Compared with the prior art, this application has the following advantages:

[0020] 1) This application provides a crop spraying device, which enables adjustable functionality by mounting a first spraying device on a lifting and tilting mechanism. Since the lifting and tilting mechanism is located at the rear of the mobile frame and directly serves as the supporting component for the first spraying device, the entire device is no longer limited to a fixed height or spray direction. Instead, it can achieve spatial adjustment via this mechanism, forming the structural basis for adjusting the height and orientation of the first spraying device. Because the first spraying device can adjust its spraying position vertically and tilted with the movement of the lifting and tilting mechanism, it enhances the device's adaptability to different terrains and crop conditions. Compared to the fixed layout of traditional spray boom structures, this device can flexibly change the spraying angle and height when encountering changes in crop height, terrain undulations, or obstructions in the area. This improves the effective coverage and operational flexibility, overcoming the limitations of traditional devices at the structural level and specifically addressing the operational constraints caused by the inability to adjust the spraying position.

[0021] 2) The liquid pesticide storage and delivery component of this application is mounted on a mobile frame, forming a relatively compact integrated structure. Furthermore, the direct mounting of the component on the mobile frame helps maintain a relatively stable center of gravity during operation, thereby reducing the risk of vehicle tilting caused by a shift in the center of gravity. This component can provide bidirectional liquid supply to both the first and second spraying devices, making the system structure simpler.

[0022] 3) The crop spraying device of this application includes a second spraying device that is a handheld atomizing spray gun. It is connected to a liquid storage and delivery component via a first infusion hose, and the first infusion hose is managed and retracted via a hand-cranked reel assembly. This hand-cranked reel assembly is mounted on a bracket, located in the upper middle part of the mobile frame, ensuring smooth hose extension and retraction. This allows the second spraying device to conveniently wind the connected first infusion hose around the hand-cranked reel assembly when not in use. It also allows the operator to flexibly control the extension length of the first infusion hose as needed, making it better suited for manual respraying operations in field corners, areas with varying plant spacing, or areas difficult for the device to cover. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a crop spraying device provided in one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the lifting and tilting mechanism provided in one embodiment of this application;

[0026] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 4 for Figure 1 A magnified view of a section at point B in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of a first spraying device provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Mobile frame; 110-Bracket; 111-Operating panel; 120-Placement cylinder; 130-Protective bracket; 131-Support plate; 140-Moving wheels; 200-Medicine liquid storage and delivery assembly; 210-Medicine liquid storage tank; 211-Injection port; 212-Cap; 220-Pressure pump; 230-Output pipeline; 231-T-connector; 300-First spraying device; 310-Spray bar; 311-Atomizing nozzle; 3101-Left spray bar; 3102-Right spray bar; 3 103-Intermediate spray bar; 320-Second infusion hose; 400-Second spraying device; 500-Lifting and tilting mechanism; 510-Guide bracket; 511-Mounting bracket; 520-Sliding bracket; 521-Sprocket; 522-Chain; 530-First electric push rod; 540-Horizontal bracket; 550-Adjusting bracket; 560-Second electric push rod; 600-Hand-cranked reel assembly; 610-First infusion hose; 601-Reel body; 602-Reel shaft; 603-Hand crank handle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0032] Please see Figures 1-5 This application provides a crop spraying device, including a mobile frame 100, a liquid storage and delivery assembly 200, a first spraying device 300, a second spraying device 400, a lifting and tilting mechanism 500, and a hand-cranked drum assembly 600.

[0033] The liquid medicine storage and delivery component 200 is mounted on the mobile frame 100 and is used for storing liquid medicine and supplying liquid medicine to the first spraying device 300 and the second spraying device 400. A lifting and tilting mechanism 500 is provided at the rear of the mobile frame 100. The first spraying device 300 is a spray bar device capable of spraying liquid medicine at multiple positions. The first spraying device 300 is mounted on the lifting and tilting mechanism 500 and can be adjusted in height and tilting angle under the control of the lifting and tilting mechanism 500. The second spraying device 400 is an atomizing spray gun device for manually controlling liquid medicine spraying. A hand-cranked drum assembly 600 is mounted on the upper middle part of the mobile frame 100 via a bracket 110. A first infusion hose 610 is wound on the hand-cranked drum assembly 600, and one end of the first infusion hose 610 is connected to the second spraying device 400.

[0034] To overcome the problem of existing spraying devices lacking spray position adjustment capabilities in complex farmland environments, this embodiment provides a structurally combined crop spraying device. It includes a lifting and tilting mechanism 500 for mounting a first spraying device 300, located at the rear of a mobile frame 100. The first spraying device 300 is a spray boom device capable of multi-position spraying of pesticides. Instead of the traditional rigid fixed installation method, it is mounted on the lifting and tilting mechanism 500, thus changing the structural foundation and enabling further spatial adjustment.

[0035] One key aspect of the structural arrangement in this embodiment is that the first spraying device 300 is mounted on the lifting and tilting mechanism 500, giving it a movable adjustment function. Since the lifting and tilting mechanism 500 is located behind the mobile frame 100 and directly serves as the supporting component for the first spraying device 300, the entire first spraying device 300 is no longer limited to a fixed height or spray direction. Instead, it can achieve corresponding spatial adjustment functions through the lifting and tilting mechanism 500, forming the structural basis for adjusting the height and orientation of the first spraying device 300.

[0036] Through the aforementioned structural design, the first spraying device 300 can adjust its spraying position in both vertical and inclined directions with the movement of the lifting and tilting mechanism 500, which helps to enhance the device's adaptability to different terrains and crop conditions. Compared with the fixed layout of the previous spray boom structure, this device can flexibly change the spraying angle and height position when encountering changes in crop height, terrain undulations, or obstructions in the area. This helps to improve the effective coverage area of ​​the spraying and the flexibility of operation, breaking through the limitations of traditional devices at the structural level and specifically improving the operational constraints caused by the inability to adjust the spraying position.

[0037] Furthermore, in this embodiment, the liquid storage and delivery component 200 is mounted on the mobile frame 100, forming a relatively compact integrated structure. The direct mounting of the liquid storage and delivery component 200 on the mobile frame 100 also helps maintain a relatively stable center of gravity during operation, thereby reducing the risk of vehicle tilting caused by center of gravity shift. This liquid storage and delivery component 200 can provide bidirectional liquid supply to the first spraying device 300 and the second spraying device 400, making the system structure simpler. The first spraying device 300 is mounted at the rear of the mobile frame 100 via a lifting and tilting mechanism 500. Its arrangement breaks away from the traditional method of fixed connection between the spray boom and the vehicle body, possessing strong spatial adaptability and making it easier to achieve targeted spraying direction and height adjustments.

[0038] The second spraying device 400 is a handheld atomizing spray gun. It is connected to the pesticide storage and delivery component 200 via a first infusion hose 610, and the first infusion hose 610 is managed by a hand-cranked reel assembly 600. This hand-cranked reel assembly 600 is mounted on the bracket 110, located in the upper middle part of the mobile frame 100, ensuring smooth operation of the hose during extension and retraction. In this way, when not in use, the second spraying device 400 can easily wind the connected first infusion hose 610 around the hand-cranked reel assembly 600. It also allows the operator to flexibly control the extension length of the first infusion hose 610 as needed, making it better suited for manual spraying in field corners, areas with uneven plant spacing, or areas difficult for the device to cover.

[0039] In some embodiments, such as Figure 1 As shown, the first spraying device 300 includes a horizontally arranged spray bar 310 for spraying pesticide solution and a second infusion hose 320 connected to the spray bar 310. Multiple atomizing nozzles 311 are provided on the wall of the spray bar 310. The second infusion hose 320 is connected to the pesticide solution storage and delivery assembly 200 to supply solution to the spray bar 310 during pesticide spraying.

[0040] In the above embodiments, the spray bar 310 of the first spraying device 300 is arranged horizontally, and the spray bar 310 is roughly parallel to the ground. This arrangement is beneficial for covering a wider crop planting area and is suitable for field operations with row planting. During a single forward movement, the crops on both sides of the device can be sprayed, reducing repeated movements and improving work efficiency. Moreover, the horizontally arranged spray bar 310 is easier to maintain a stable spray trajectory during operation, making it easier for the operator to control the work rhythm when the mobile frame 100 is moving.

[0041] Meanwhile, the second infusion tubing 320 is connected to the spray bar 310, providing medication to the spray bar 310. The use of the second infusion tubing 320 and the first infusion tubing 610 simplifies installation and maintenance operations, and allows for quick and easy replacement when the tubing ages or wears, facilitating maintenance.

[0042] The spray bar 310 has multiple atomizing nozzles 311 arranged along its length. During use, it can spray the liquid medicine in a mist form. The multiple nozzles work together to help achieve a wider coverage area. The atomizing nozzles 311 are directly integrated into the wall of the spray bar 310, making the overall structure compact and less prone to loosening or falling off. It is also easy to clean and maintain in daily use.

[0043] In some embodiments, the second spraying device 400 includes a manually operated atomizing spray gun connected to the first infusion tubing 610.

[0044] The second spraying device 400 uses a manually operated, press-type atomizing spray gun as its actuating component. It is suitable for rapid, targeted spraying at farmland edges, irregular terrain, or around obstacles. It is also easy to carry and operate with one hand, making it particularly suitable for low-lying areas, corners, or narrow spaces, offering high operational flexibility. The second spraying device 400 connects to the pesticide storage and delivery assembly 200 via the first infusion hose 610, enabling stable pesticide delivery. The connection of the first infusion hose 610 provides the second spraying device 400 with greater operational freedom, reducing the constraints imposed by the mobile frame 100 structure. The operator can flexibly hold the second spraying device 400 and adjust the spray direction according to site requirements. Furthermore, in conjunction with the hand-cranked reel assembly 600 mounted on the bracket 110, the first infusion hose 610 can be neatly wound and stored in the hand-cranked reel assembly 600 when the second spraying device 400 is not in use.

[0045] The second spraying device 400 introduced in this embodiment works in conjunction with the first spraying device 300, giving the device two operating modes: the boom sprayer 310 is suitable for large-area continuous spraying, suitable for operating on an entire area; while the manual press-type atomizing spray gun is more suitable for targeted spraying of special areas such as corners and gaps. The two spraying methods do not interfere with each other structurally and complement each other functionally, providing more operating options in scenarios with different crop densities, complex terrain, or where localized respraying is required. This helps reduce spraying omissions and improves the integrity of the operation and adaptability to the field.

[0046] In some embodiments, such as Figure 1 and Figure 2 As shown, the lifting and tilting mechanism 500 includes a vertically arranged guide bracket 510 and a sliding frame 520 that slides with the guide bracket 510.

[0047] The guide bracket 510 is vertically fixed to the upper rear of the mobile frame 100. A sliding frame 520 capable of lifting and lowering is slidably connected to the upper part of the guide bracket 510. A first electric push rod 530 is installed between the top of the sliding frame 520 and the bottom of the guide bracket 510, allowing the sliding frame 520 to lift and lower under the drive of the first electric push rod 530. Two left-right sprockets 521 are mounted on the top of the sliding frame 520, and a chain 522 is guided and connected to them. A sliding bracket 522 is slidably connected to the lower part of the guide bracket 510. Mounting frame 511, the upper part of which is connected to one end of two chains 522 respectively and can be raised and lowered under the action of chains 522. A horizontal support 540 is fixedly connected to one side of the upper part of the guide bracket 510. The other end of the two chains 522 is connected to the horizontal support 540. An adjusting frame 550 is hinged to the lower end of the mounting frame 511. A second electric push rod 560 is provided between the adjusting frame 550 and the mounting frame 511 to drive the adjusting frame 550 to rotate. A first spraying device 300 is connected to the adjusting frame 550 on the side away from the mounting frame 511.

[0048] The lifting and tilting mechanism 500, through the cooperation between the guide bracket 510 and the sliding frame 520, enables the vertical movement of the first spraying device 300. The guide bracket 510 is securely mounted at the rear of the mobile frame 100, and the sliding frame 520 slides along the upper area of ​​the guide bracket 510 and is driven by the first electric push rod 530 to complete the lifting operation. This structural combination limits the movement path of the first spraying device 300, allowing it to be flexibly adjusted up and down within a set height range, facilitating the flexible setting of the spraying distance according to the planting height of different crops and spraying requirements. Moreover, by adjusting the height of the first spraying device 300, it is positioned at a suitable height during spraying, thereby reducing pesticide drift to a certain extent and helping to improve the coverage accuracy of the sprayed area. By setting sprockets 521 arranged on the left and right at the top of the sliding frame 520, the chain 522 is guided by the sprockets 521 and connected to the mounting frame 511, and extends to the cross support 540, forming a chain drive lifting system. This transmission structure can realize power transmission while simultaneously controlling the lifting process on the left and right sides, so that the spray bar support structure remains balanced during the lifting process, reducing the tilting problem caused by one side rising first or falling later.

[0049] Furthermore, in this embodiment, the mounting frame 511 and the adjusting frame 550 are connected by a hinge. The second electric push rod 560 acts between them, enabling the attitude adjustment of the adjusting frame 550, and thus adjusting the rotation angle of the first spraying device 300 mounted on the adjusting frame 550. When the second electric push rod 560 extends or retracts, it drives the adjusting frame 550 to rotate around the hinge point, thereby allowing the first spraying device 300 to adjust its angle in the front-to-back direction. This structural design allows the first spraying device 300 to tilt appropriately when facing complex terrain, tilted crop planting, or partial shading, improving the adaptability of spraying operations to different usage scenarios. Moreover, angle adjustment helps to reduce blind spots caused by the fixed angle of the first spraying device 300, improving the overall practicality of the device and the coverage effect of the operation.

[0050] It should be noted that because the second infusion hose 320 is connected to the first spraying device 300, the height and tilting angle of the first spraying device 300 are adjusted via the lifting and tilting mechanism 500 during use. Therefore, the length of the second infusion hose 320 must fully consider the working stroke of the lifting and tilting mechanism 500 and the range of tilting angle changes of the adjusting bracket 550. Specifically, the second infusion hose 320 should have an appropriate margin of length to accommodate positional changes of the first spraying device 300 during lifting or angle adjustment, avoiding stretching restrictions or jamming during movement, thus ensuring the continuity and stability of the drug supply. In practical applications, the wiring path of the second infusion hose 320 can be optimized based on the device structure to better meet the needs of dynamic operating conditions.

[0051] In some embodiments, such as Figure 1 and Figure 3 As shown, the hand-cranked drum assembly 600 includes a drum body 601 located on a bracket 110, a drum shaft 602 coaxially arranged with the drum body 601, and a hand crank 603 fixedly installed at one end of the drum shaft 602. The drum shaft 602 is rotatably mounted on the bracket 110.

[0052] The first infusion hose 610 is wound around the outer periphery of the reel body 601, and the reel shaft 602 is rotatably mounted on the bracket 110 through the bearing structure on the bracket 110. The first infusion hose 610 is connected to the drug liquid storage and delivery component 200.

[0053] The hand-cranked reel assembly 600 is mounted on the bracket 110 located above the center of the mobile frame 100. Since the reel body 601 and the reel shaft 602 are coaxially arranged, and the hand crank 603 is fixed to one end of the reel shaft 602, the entire structure is compact, allowing the operator to smoothly release and retrieve the first infusion hose 610 before and after operation. The reel shaft 602 is supported by a bearing structure on the bracket 110, ensuring smooth rotation. The bearing helps reduce rotational resistance, making the retrieval of the first infusion hose 610 easier and reducing operator fatigue during prolonged spraying operations. Simultaneously, the first infusion hose 610 is wound around the outer circumference of the reel body 601 and directly connected to the liquid storage and delivery assembly 200, forming a complete liquid supply path. Centralized storage of the first infusion hose 610 keeps it tidy when not in use, reducing the chance of tangling and damage. During spraying operations, the first infusion hose 610 can be flexibly pulled out as needed, making it convenient for the operator to use the second spraying device 400 at any time.

[0054] In some embodiments, such as Figure 1 and Figure 4 As shown, the medicine storage and delivery assembly 200 includes a medicine storage tank 210 disposed in the middle of the mobile frame 100, a pressure pump 220 connected to the medicine storage tank 210 via a pipeline, and an output pipeline 230 connected to the output end of the pressure pump 220. The output pipeline 230 is connected to a T-connector 231 and is connected to the first infusion hose 610 and the second infusion hose 320 respectively via the T-connector 231. An injection port 211 is also provided on one side of the upper part of the medicine storage tank 210, and a cap 212 is provided on the injection port 211.

[0055] In the above embodiment, the liquid storage tank 210 is connected to the pressure pump 220 via a pipeline. After being pressurized, the liquid is transported along the output pipeline 230 to the tee connector 231, and then further flows to the first infusion hose 610 and the second infusion hose 320 respectively. This branching design allows the first spraying device 300 and the second spraying device 400 to share the same liquid supply source, eliminating the need for two separate pumping and storage devices, thereby reducing equipment weight and system complexity. The tee connector 231 facilitates centralized guidance of the liquid supply flow, resulting in a clearer and more compact pipeline distribution.

[0056] Meanwhile, this embodiment features an injection port 211 on the upper edge of the liquid storage tank 210, equipped with a cap 212 for convenient filling and sealing of the liquid. The injection port location facilitates manual replenishment of the liquid storage tank 210 and also allows connection to an external supply hose, minimizing the risk of spillage or contamination. The cap 212 covers the injection port 211, helping to prevent dust or impurities from entering and reducing the evaporation rate of the liquid, thereby maintaining a hygienic supply and balanced concentration. The overall structure is simple and practical, meeting the basic requirements for safety and cleanliness in outdoor environments such as farmland.

[0057] In some embodiments, such as Figure 3 As shown, the bracket 110 is also provided with a placement cylinder 120 for placing the second spraying device 400.

[0058] In the above embodiment, the placement cylinder 120 is mounted on the bracket 110, providing a dedicated storage location for the second spraying device 400. The bracket 110 is located above the middle of the mobile frame 100, in a relatively open position, facilitating quick placement or retrieval of the second spraying device 400 by operators during work breaks or after completion. This structural arrangement reduces the possibility of shaking or slipping caused by temporarily placing the second spraying device 400 elsewhere. Moreover, the placement cylinder 120 does not obstruct the retraction and extension of the first infusion hose 610. Since the connection between the second spraying device 400 and the liquid storage and delivery component 200 depends on the first infusion hose 610, if a reasonable storage area is not provided after operation, the second spraying device 400 is easily left lying around, which can easily lead to bumps or liquid residue dripping. By setting up the placement cylinder 120, the second spraying device 400 can be properly stored when not in use, while the first infusion hose 610 can also be naturally retracted with the hand-cranked reel assembly 600, facilitating subsequent handling and maintenance.

[0059] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the spray bar 310 includes a left spray bar 3101, a right spray bar 3102, and a middle spray bar 3103. The two ends of the middle spray bar 3103 are respectively provided with internal thread structures. The ends of the left spray bar 3101 and the right spray bar 3102 are respectively provided with external thread structures that are threaded to the middle spray bar 3103. The left spray bar 3101 and the right spray bar 3102 are connected to the left and right ends of the middle spray bar 3103 respectively by threaded connection, forming an integral detachable segmented spray bar structure. When the middle spray bar 3103 is not connected to the left spray bar 3101 or the right spray bar 3102, the two ends of the middle spray bar 3103 can be sealed by plugs with external threads. Multiple atomizing nozzles 311 are provided on the bar walls of the left spray bar 3101 and the right spray bar 3102.

[0060] In the above embodiment, the spray boom 310 consists of a central spray boom 3103 and two side spray booms, left spray boom 3101 and right spray boom 3102, which are assembled into a whole by threaded connection. This segmented structure is more convenient in manufacturing, packaging and transportation, and can be disassembled or assembled according to actual needs. During operation, the user can choose to connect the left spray boom 3101 or the right spray boom 3102 to one end of the central spray boom 3103, or choose to connect the left spray boom 3101 and the right spray boom 3102 to both ends of the central spray boom 3103, thereby adapting to the requirements of different working widths.

[0061] The intermediate spray bar 3103 has internal threads at both ends, which are screwed onto the external threads of the left spray bar 3101 and the right spray bar 3102, respectively. This connection method is structurally stable, easy to assemble and disassemble, and convenient for maintenance. When the device is no longer used for spraying, the left spray bar 3101 and the right spray bar 3102 can be removed from the intermediate spray bar 3103, and the two ends of the intermediate spray bar 3103 can be sealed with externally threaded plugs. The plugs are installed and removed using threaded connections, facilitating quick installation. When the left spray bar 3101 and the right spray bar 3102 are connected to the intermediate spray bar 3103, multiple atomizing nozzles 311 on the bar walls of the left spray bar 3101 and the right spray bar 3102 can form a continuous and evenly distributed spray band, improving the coverage and uniformity of the spraying operation.

[0062] In some embodiments, such as Figure 1 As shown, the bottom end of the mobile frame 100 is provided with a mobile wheel 140, and an engine is provided at the front of the mobile frame 100 to drive the mobile frame 100 to move through the mobile wheel 140. The engine is located at the front of the mobile frame 100, forming a front-drive structure. Further as... Figure 3 As shown, the bracket 110 is also provided with an operation panel 111, which is provided with operation buttons that can control the first electric push rod 530 and the second electric push rod 560.

[0063] In the above embodiment, the bottom of the mobile frame 100 is equipped with mobile wheels 140, which, in conjunction with the engine located at the front, provide driving force, enabling the entire device to move and operate in farmland environments. This avoids reliance on manual pushing and pulling, improving the device's operating efficiency over a larger operating range. Simultaneously, this embodiment features an operation panel 111 on the support 110, used to install operating buttons for controlling the first electric push rod 530 and the second electric push rod 560. The operation panel 111 is positioned for easy observation and operation, allowing the operator to quickly adjust the first spraying device 300 while the device is moving and spraying. The button-type control is intuitive, allowing the operator to flexibly control the height and angle of the spray boom 310 according to operational needs. This operation method reduces workload, helps minimize errors during human intervention, and improves the continuity and practicality of the operation.

[0064] In some embodiments, such as Figure 4 As shown, a protective bracket 130 is provided around the medicine storage tank 210. The protective bracket 130 is fixedly connected to the mobile frame 100. A support plate 131 is fixedly installed at the top of the protective bracket 130, which is located above the medicine storage tank 210. The pressure pump 220 is fixedly installed on the support plate 131.

[0065] In the above embodiment, a protective bracket 130 is provided around the liquid medicine storage tank 210 and is fixedly connected to the mobile frame 100, structurally serving a dual function of support and protection. The protective bracket 130 surrounds the liquid medicine storage tank 210, effectively resisting external mechanical impacts during device movement and operation, reducing the possibility of damage to the liquid medicine storage tank 210 due to collisions. The fixed connection between the protective bracket 130 and the mobile frame 100 forms a strong overall support frame, further enhancing the protective effect.

[0066] Meanwhile, a support plate 131 is installed on the top of the protective bracket 130. This support plate 131 is fixed to the protective bracket 130 and positioned above the medicine storage tank 210. An appropriate distance is maintained between the support plate 131 and the medicine storage tank 210, creating a gap to prevent direct contact and thus avoid pressure on the medicine storage tank 210. Furthermore, this open layout facilitates the filling, level inspection, and routine maintenance of the medicine storage tank 210 by personnel, improving the operational convenience of the structure.

[0067] Furthermore, in this embodiment, the pressure pump 220 is mounted on the support plate 131, above the liquid storage tank 210. Compared to installation closer to the ground, this effectively reduces the probability of pump damage caused by damp or muddy environments. Moreover, the pressure pump 220 can be connected to the liquid storage tank 210 via a short pipeline, resulting in a clear and simple liquid supply line, which helps reduce resistance during liquid transmission. Additionally, mounting the pressure pump 220 on the support plate 131 facilitates future disassembly and maintenance.

[0068] The following is a reference method for using the crop spraying device provided in this application embodiment:

[0069] Before commencing spraying, the pesticide solution must be added to the pesticide storage tank 210 through the injection port 211. After injection, the tank is sealed with the cap 212. Once the pressure pump 220 is started, the pesticide solution flows through the output pipe 230 to the three-way connector 231, driven by the pump, and is then distributed to the first infusion hose 610 and the second infusion hose 320. If the second spraying device 400 is used for localized spraying, the operator can remove the second spraying device 400 from the placement cylinder 120 on the support 110 and pull out the appropriate length of the first infusion hose 610 for operation. After spraying, the hand crank 603 is turned to drive the reel shaft 602, causing the first infusion hose 610 to retract onto the reel body 601 for neat storage.

[0070] When carrying out large-area spraying operations, the middle spray bar 3103 can be assembled with the left spray bar 3101 and the right spray bar 3102 respectively through threading, depending on the width of the work area, to form a complete spray bar 310. Alternatively, depending on the situation, it can be decided whether to seal one end of the middle spray bar 3103. After the spray bar is assembled, the first electric push rod 530 can be controlled by the button on the operation panel 111 to adjust the height of the sliding frame 520, while simultaneously driving the second electric push rod 560 to rotate the adjustment frame 550, thereby adjusting the height and front-back angle of the spray bar 310. Pressurized liquid flows into the spray bar 310 through the second infusion hose 320 and is continuously atomized and sprayed out by multiple atomizing nozzles 311 arranged on it, forming a uniformly covered spray band.

[0071] Throughout the operation, the mobile frame 100 is supported by the wheels 140 at the bottom and moves slowly forward under the drive of the engine, coordinating with the spray boom 310 to achieve continuous coverage spraying between crop rows. The pesticide storage tank 210 is secured by a protective bracket 130, ensuring structural stability. A support plate 131 is positioned above it, providing an installation platform for the pressure pump 220. The entire pesticide storage and delivery assembly 200 has a compact layout and reasonable structure. After the operation is completed, the control buttons on the operation panel 111 are turned off, the power is cut off, and the second spraying device 400 is inserted into the placement cylinder 120 and returned to its original position, completing the entire spraying operation process.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 application.

Claims

1. A crop spraying device, characterized in that, It includes a mobile frame, a liquid pesticide storage and delivery assembly, a first spraying device, a second spraying device, a lifting and tilting mechanism, and a hand-cranked drum assembly; The liquid medicine storage and delivery assembly is mounted on a mobile frame and is used for storing liquid medicine and supplying liquid medicine to the first and second spraying devices. A lifting and tilting mechanism is provided at the rear of the mobile frame. The first spraying device is a spray bar device capable of spraying liquid medicine at multiple positions. The first spraying device is mounted on the lifting and tilting mechanism and can be adjusted in height and tilting angle under the control of the lifting and tilting mechanism. The second spraying device is an atomizing spray gun device for manually controlling liquid medicine spraying. A hand-cranked drum assembly is mounted on the upper middle part of the mobile frame via a bracket. A first infusion hose is wound on the hand-cranked drum assembly, and one end of the first infusion hose is connected to the second spraying device.

2. The crop spraying device according to claim 1, characterized in that, The first spraying device includes a horizontally arranged spray bar for spraying pesticide solution and a second infusion hose connected to the spray bar. The spray bar has multiple atomizing nozzles on its bar wall.

3. The crop spraying device according to claim 2, characterized in that, The second spraying device includes a manually operated atomizing spray gun, which is connected to the first infusion hose.

4. The crop spraying device according to any one of claims 1-3, characterized in that, The lifting and tilting mechanism includes a vertically arranged guide bracket and a sliding frame that slides with the guide bracket; The guide bracket is vertically fixedly connected to the upper rear of the mobile frame. A sliding frame capable of lifting and lowering is slidably connected to the upper part of the guide bracket. A first electric push rod is installed between the top of the sliding frame and the bottom of the guide bracket. The sliding frame can be lifted and lowered under the drive of the first electric push rod. Two sprockets arranged left and right are installed at the top of the sliding frame, and chains are guided and connected to the two sprockets. A mounting frame is slidably connected to the lower part of the guide bracket. The upper part of the mounting frame is connected to one end of two chains respectively and can be lifted and lowered under the action of the chains. A horizontal bracket is fixedly connected to one side of the upper part of the guide bracket, and the other ends of the two chains are connected to the horizontal bracket. An adjusting frame is hinged to the lower end of the mounting frame. A second electric push rod for driving the adjusting frame to rotate is provided between the adjusting frame and the mounting frame. A first spraying device is connected to the adjusting frame on the side away from the mounting frame.

5. The crop spraying device according to claim 1, characterized in that, The hand-cranked drum assembly includes a drum body located on a bracket, a drum shaft coaxially arranged with the drum body, and a hand crank fixedly installed at one end of the drum shaft. The drum shaft is rotatably mounted on the bracket. The first infusion tubing is wound around the outer circumference of the reel body, and the reel shaft is rotatably mounted on the bracket via a bearing structure on the bracket. The first infusion tubing is connected to the drug delivery assembly.

6. The crop spraying device according to claim 2 or 3, characterized in that, The drug storage and delivery assembly includes a drug storage tank located in the middle of the mobile frame, a pressure pump connected to the drug storage tank via a pipeline, and an output pipeline connected to the output end of the pressure pump. The output pipeline is connected to a T-connector and is connected to a first infusion hose and a second infusion hose respectively via the T-connector. An injection port is also provided on one side of the upper part of the drug storage tank, and a cap is provided on the injection port.

7. The crop spraying device according to claim 1, characterized in that, The support frame is also equipped with a placement tube for placing the second spraying device.

8. The crop spraying device according to claim 2, characterized in that, The spray bar includes a left spray bar, a right spray bar, and a middle spray bar. The two ends of the middle spray bar are respectively provided with internal thread structures. The ends of the left and right spray bars are respectively provided with external thread structures that engage with the threaded middle spray bar. The left and right spray bars are connected to the left and right ends of the middle spray bar by threaded connection, forming an integrally detachable segmented spray bar structure. When the middle spray bar is not connected to the left or right spray bar, the two ends of the middle spray bar can be sealed by end plugs with external threads. Multiple atomizing nozzles are provided on the bar walls of the left and right spray bars.

9. The crop spraying device according to claim 4, characterized in that, The bottom of the mobile frame is provided with a moving wheel, and the front of the mobile frame is provided with an engine that drives the mobile frame to move through the moving wheel. The support is also provided with an operation panel, which is provided with operation buttons that can control the first electric push rod and the second electric push rod.

10. The crop spraying device according to claim 6, characterized in that, The outer perimeter of the medicine storage tank is equipped with a protective bracket, which is fixedly connected to the mobile vehicle frame. A support plate is fixedly installed at the top of the protective bracket, which is located above the medicine storage tank. The pressure pump is fixedly installed on the support plate.

Images