A suspended pesticide spraying machine for a greenhouse

Abstract

The utility model relates to the technical field of greenhouse pesticide spraying, and particularly discloses a suspension pesticide spraying machine for greenhouse, which comprises a hanging rail and a walking mechanism, the walking mechanism is connected with a pesticide spraying device, the hanging rail is provided with a rack, the walking mechanism comprises a mounting frame, the mounting frame is provided with a vertical guide rail and a mounting plate capable of sliding up and down along the vertical guide rail, a power device is mounted on the mounting plate, a power output end of the power device is connected with a gear, the gear is engaged with the rack, a spring is arranged between the mounting plate and the mounting frame, and the spring applies a downward pulling force to the mounting plate; a walking machine box of the pesticide spraying device is suspended with a pesticide spraying box through a lifting device, and a positioning combination structure is arranged at the connecting part of the pesticide spraying box and the walking machine box. The spring keeps the gear and the rack in close engagement, prevents unstable engagement or disengagement, the positioning combination structure keeps the relative position of the pesticide spraying box and the walking machine box stable, and the pesticide spraying machine keeps stable during walking.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse spraying technology, specifically a suspended sprayer for greenhouses. Background Technology

[0002] In greenhouse cultivation, the application of pesticides, fertilizers, and water varies at each stage of crop growth. Even for the same crop at the same growth stage, the timing of pesticide application, the amount of fertilizer, and the amount of water used differ depending on the type of pest or disease and the specific growth conditions. Among the pesticides and fertilizers sprayed on crops are triazole drugs that regulate crop growth, micronutrient fertilizers that supplement crop nutrition, and antiviral agents that provide antiviral protection. Some crops also require pollination spraying. The effective distribution of these pesticides and fertilizers is one of the important conditions for ensuring healthy crop growth. When crops face hot and dry environments, spraying water can increase air humidity and lower the temperature. Small, frequent applications of antiviral agents can also prevent viral infection in arid environments. When insecticides are dispersed in a mist form on the undersides of leaves and inside flowers, they provide excellent pest control. The even distribution of antiviral agents can also effectively reduce the spore count of pathogens in the greenhouse, achieving full-coverage pest control. To ensure that pesticides and fertilizers are evenly distributed on crops and to improve the convenience of spraying, suspended sprayers are widely used. These sprayers can travel on a suspended track and spray pesticides and fertilizers evenly on crops.

[0003] The suspended sprayer travels along a suspended rail installed below the greenhouse roof. The sprayer includes a traveling mechanism and a spraying device. The traveling mechanism moves along the rail, and the spraying device is fixedly connected to it and moves synchronously. The traveling mechanism and the rail are typically driven by a rack and pinion mechanism. The traveling mechanism has multiple rollers that travel on the rail and gears that mesh with the rack. The rail includes a track for the rollers and a rack that meshes with the gears. The gears are driven by a power unit. When the power unit drives the gears to rotate, the meshing of the gears and racks drives the traveling mechanism. The problem with this drive method is that during use, the rail is subjected to significant weight from the spraying device, causing localized sagging. The rack also deforms, and the rail and rack are no longer perfectly horizontal. Furthermore, the degree of sagging is inconsistent, leading to unstable meshing between the gears and racks. This results in severe wear and even disengagement of the gears and racks, affecting the sprayer's movement. Spraying equipment typically uses a lifting structure, where the spraying box is raised to spray pesticides. The spraying box stores the pesticide. However, existing spraying boxes are not accurately positioned after being raised and are unstable during movement. Utility Model Content

[0004] This invention addresses the problems of unstable gear and rack meshing and inaccurate positioning of spraying equipment in existing greenhouse sprayers during operation, by providing a suspended sprayer for greenhouses that features stable gear and rack meshing and accurate positioning of the spraying equipment after it is raised.

[0005] To solve the above-mentioned technical problems, this utility model includes a hanging rail installed below the greenhouse roof and a traveling mechanism capable of moving on the hanging rail. The traveling mechanism is connected to a spraying device. The hanging rail includes a support frame and at least one track. The support frame is connected to the greenhouse roof. The hanging rail also includes a toothed rack with its serrated surface facing upwards. The traveling mechanism includes a mounting frame with multiple rollers capable of rolling on the track. Its structural feature is that a vertical guide rail and a mounting plate capable of sliding up and down along the vertical guide rail are installed on one side of the mounting frame. A power device for driving the traveling mechanism to reciprocate is fixedly installed on the mounting plate. The power output end of the power unit is connected to a gear that meshes with a rack. The mounting plate is connected to one end of a spring, and the other end of the spring is connected to a mounting frame. The spring applies a downward pulling force to the mounting plate. The spraying equipment includes a traveling chassis and a spraying box. The traveling chassis is fixedly connected to the mounting frame. The traveling chassis is equipped with a lifting device. The spraying box is located below the traveling chassis and is connected to the lifting device. The connection between the spraying box and the traveling chassis is equipped with a positioning assembly structure for positioning the upward position of the spraying box. The power unit of the traveling mechanism and the lifting device of the traveling chassis are both connected to the control system.

[0006] With the above structure, the main operation of the suspended sprayer is as follows: the traveling mechanism reciprocates on the suspended rail. The traveling housing of the spraying equipment is fixedly connected to the mounting frame of the traveling mechanism. The spraying box is suspended below the traveling housing. When the traveling mechanism moves, the traveling housing and the spraying box move synchronously with the traveling mechanism, and the spraying box sprays pesticides onto the crops in the greenhouse. The suspended rail is equipped with a rack with the serrated surface facing upwards. The traveling mechanism includes a mounting frame, which has multiple rollers that can roll on the suspended rail and a vertical guide rail. The weight of the traveling mechanism and the spraying equipment is mainly applied to the suspended rail through the rollers. The mounting frame also has gears and a power device that drives the gears. The gears mesh with the rack, and the power device is mounted on a mounting plate. The mounting plate can slide up and down along the vertical guide rail, so the power device and gears can slide up and down with the mounting plate. Because a spring is installed between the mounting plate and the mounting frame, the spring applies a downward pulling force to the mounting plate. Under the action of the spring pulling force... The gear presses down on the rack, and the gear and rack mesh tightly without disengagement. Even if the rail sags slightly, the spring pull will pull the mounting plate down, and the gear will still maintain tight contact and meshing with the rack, preventing unstable contact or disengagement and ensuring uninterrupted movement. Because a positioning assembly structure is installed between the top of the spray box and the bottom of the traveling chassis, this structure can position the spray box at its rising position—that is, the position after the lifting device has raised the spray box. Under the limiting effect of the positioning assembly structure, the relative position of the spray box and the traveling chassis remains stable during spraying.

[0007] The spray box is equipped with a storage chamber for storing pesticides. The storage chamber is connected to the spray head through a pipe. The spray head is mounted on a rotating frame. The rotating frame is powered by a geared motor that can drive the rotating frame to rotate in both directions. The geared motor is controlled by a control system.

[0008] A fan is also installed on the rotating frame, and the fan's airflow direction is towards the nozzle and is the same as the nozzle's spraying direction.

[0009] The positioning assembly structure includes multiple positioning protrusions on the top of the spray box, and positioning grooves corresponding to the positioning protrusions are provided on the bottom of the walking machine box. At least two of the positioning grooves are equipped with positioning switches. When the positioning protrusion is inserted upward into the positioning groove and abuts against the positioning groove, the positioning protrusion touches the positioning switch. When the positioning protrusion touches the positioning switch, the lifting device stops lifting the spray box upward. The positioning switch is connected to the control system signal.

[0010] The walking chassis is equipped with a storage battery, which has a charging plug. The greenhouse is equipped with a fixed charging socket for charging the storage battery. When the walking chassis moves toward or away from the charging socket, the charging plug can be inserted into or detached from the charging socket. The power unit of the walking mechanism, the lifting device of the walking chassis, and the geared motor that drives the rotating frame to rotate are all electrically connected to the storage battery.

[0011] The walking chassis is provided with a limiting protrusion for positioning the charging position, and the greenhouse is provided with a limit switch that cooperates with the limiting protrusion. When the charging plug is inserted into the charging socket, the limiting protrusion touches the limit switch, and the limit switch is connected to the control system signal.

[0012] The walking chassis is equipped with a drug inlet pipe that can deliver the medicine into the drug storage chamber. The drug inlet pipe is connected to the drug mixing and dispensing system through a pipeline. The drug mixing and dispensing system is connected to the control system.

[0013] The storage chamber is equipped with a level gauge, which is connected to the control system signal; the bottom of the storage chamber is equipped with a slag discharge port.

[0014] The spraying box and the lifting device are detachably connected.

[0015] The walking machine is equipped with a walking counter to detect the walking distance of the sprayer, and the walking counter is connected to the control system signal.

[0016] This utility model discloses a suspended sprayer for greenhouses. A spring is installed between the mounting frame and the mounting plate of the traveling mechanism. The spring exerts a downward pulling force on the mounting plate, causing the gear to press tightly against the rack. The gear and rack mesh closely, preventing unstable meshing or disengagement. The traveling chassis of the spraying equipment is fixedly connected to the traveling mechanism, allowing the spraying equipment to move synchronously with the traveling mechanism. A positioning assembly structure is provided at the connection between the traveling chassis and the spray box. This positioning assembly structure ensures that the position of the spray box is determined after it is raised, maintaining a stable relative position between the spray box and the traveling chassis. This ensures stability of the spraying equipment during the traveling spraying process, improving the uniformity of spraying. The positioning of the traveling chassis... The groove is equipped with a positioning switch. When the positioning protrusion touches the positioning switch, the control system stops the lifting device, achieving accurate positioning. The lifting device is detachably connected to the spraying box, allowing the spraying box to be moved to other greenhouses after detachment. The nozzle can rotate in both directions during spraying. The fan disperses the pesticide sprayed from the nozzle into a mist, which then falls onto the greenhouse crops, expanding the spraying area. During the rotation of the nozzle, the crops on both sides and below the travel path are sprayed. The control system controls the frequency and speed of the rotating frame's forward and reverse rotation to achieve uniform spraying. The charging plug of the traveling machine is automatically inserted into or detached from the charging socket as the sprayer moves, making charging convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the greenhouse suspended sprayer of this utility model;

[0018] Figure 2 This is a side view of the traveling mechanism;

[0019] Figure 3 for Figure 2 View from direction A;

[0020] Figure 4 for Figure 2 BB cross-sectional diagram;

[0021] Figure 5 This is a schematic diagram of the structure when the spraying box is suspended below the traveling machine box;

[0022] Figure 6 This is a schematic diagram showing the spraying tank after it has been raised and is connected to the traveling mechanism.

[0023] Figure 7 for Figure 5 A schematic diagram of the CC cross-section;

[0024] Figure 8 for Figure 5 DD cross-sectional schematic diagram;

[0025] Figure 9 A diagram illustrating the charging process of a pesticide sprayer;

[0026] Figure 10 This is a schematic diagram showing the spraying box detached from the walking machine housing;

[0027] In the diagram: 1. Suspension rail; 11. Support frame; 12. Rack; 13. Edge retaining wall; 14. Track; 15. Base plate; 2. Traveling mechanism; 21. First geared motor; 22. Mounting bracket; 221. First horizontal shaft; 222. Spring hanging rod; 223. First roller; 23. Mounting plate; 231. Spring hanging hole; 24. Vertical guide rail; 25. Spring; 26. Slider; 27. Gear; 3. Traveling chassis; 31. First housing; 32. Medicine inlet tube; 33. Connecting plate; 331. Second horizontal shaft; 332. Second roller; 34. Limiting protrusion; 35. Charging plug; 36. Suspension rope; 37. First sleeve; 38. Battery 39. Elevator; 310. Hook; 311. Positioning groove; 312. Positioning switch; 4. Spraying box; 41. Second box; 42. Nozzle; 43. Fan; 44. Rotating frame; 441. Branch; 45. Positioning protrusion; 46. Lifting lug; 47. Storage chamber; 471. Level gauge; 472. Slag discharge port; 473. Second sleeve; 48. Installation chamber; 49. Spraying pump; 410. Discharge pipe; 411. Second geared motor; 5. Travel counter; 100. Greenhouse; 101. Suspension connector; 102. Charging socket; 103. Limit switch; 200. Control system; 300. Mixing and application system. Detailed Implementation

[0028] Reference Figure 1-10 A suspended sprayer for greenhouses is installed inside a greenhouse chamber 100. It includes a hanging rail 1 and a traveling mechanism 2 capable of moving along the hanging rail 1. The hanging rail 1 is suspended below the greenhouse roof. The traveling mechanism 2 is connected to spraying equipment, which includes a traveling housing 3 fixedly connected to the traveling mechanism 2 and a spraying box 4 suspended below the traveling housing 3. The traveling housing 3 is equipped with a lifting device, and the spraying box 4 is connected to the lifting device. The lifting device controls the raising and lowering of the spraying box 4, allowing it to spray pesticides onto crops inside the greenhouse. The traveling mechanism 2 includes a support frame 11 and at least one track 14. The support frame 11 is fixedly connected to the greenhouse roof via a suspension connector 101. The support frame 11 is elongated. The suspension connector 101 can be made of steel wire or round steel, etc. The hanging rail 1 also includes a rack 12 with its serrated surface facing upwards. Figure 2-4As shown, the support frame 11 has a rack 12 on one side and a retaining edge 13 on the other side. The suspension connector 101, rack 12, and retaining edge 13 are parallel to each other and connected at the bottom by a base plate 15. The suspension connector 101, rack 12, retaining edge 13, and base plate 15 on both sides form two tracks 14. The traveling mechanism 2 includes a U-shaped mounting frame 22. Two first rollers 223 are respectively provided on the two vertical side walls of the mounting frame 22. The four first rollers 223 are symmetrically arranged in pairs on both sides of the support frame 11. The support frame 11 is on the same side Two first rollers 223 can roll on the track 14 on the same side. The first rollers 223 are installed at one end of the first horizontal shaft 221, and the other end of the first horizontal shaft 221 is connected to the side wall of the mounting frame 22. One side of the mounting frame 22 is provided with two vertical guide rails 24 and a mounting plate 23 that can slide up and down along the vertical guide rails 24. A first reduction motor 21 is fixedly installed on the mounting plate 23. The first reduction motor 21 can rotate in both directions, thereby driving the walking mechanism 2 to move back and forth on the hanging rail 1. The power output end of the first reduction motor 21 is connected to There is a gear 27, which is located above and meshes with the rack 12. Specifically, a slider 26 is provided on the outside of the vertical guide rail 24. The slider 26 and the wall of the vertical guide rail 24 have grooves and protrusions that can be interlocked, so that the slider 26 can only slide up and down along the vertical guide rail 24. The slider 26 is fixedly connected to the mounting plate 23, so the mounting plate 23 and the first reduction motor 21 can also only slide up and down along the vertical guide rail 24. The slider 26 can also prevent the mounting plate 23 and the first reduction motor 21 from tilting outwards. One end of the spring 25 is connected to the mounting bracket 22, and the other end of the spring 25 is connected to the mounting bracket 22. At least one spring 25 is provided, and two springs are provided in the figure. The spring 25 applies a downward pulling force to the mounting plate 23, so that the gear 27 presses on the rack 12. The gear 27 and the rack 12 are tightly meshed to prevent them from disengaging during movement. Specifically, the mounting plate 23 has a spring hanging hole 231, and the mounting bracket 22 has a fixed outward protruding spring hanging rod 222. One end of the spring 25 is hung on the spring hanging hole 231, and the other end is hung on the spring hanging rod 222.

[0029] Reference Figure 1-8The traveling chassis 3 includes a first housing 31, which contains two lifting mechanisms 39. Each lifting mechanism 39 is a lifting device and can be an electric hoist. Each lifting mechanism 39 is equipped with suspension ropes 36, which suspend the two ends of the spraying box 4. The suspension ropes 36 can be steel wire ropes. Specifically, the bottom end of each suspension rope 36 has a hook 310. The spraying box 4 includes a second housing 41, which has two lifting lugs 46 on its top. The two hooks 310 are respectively attached to the two lifting lugs 46. The bottom of the first housing 31 has a hole for the suspension ropes 36, hooks 310, and lifting lugs 46 to pass through. However, the hook 310 can be detached from the lifting lug 46, meaning the elevator 39 and the spraying box 4 are detachably connected. When the hook 310 is detached from the lifting lug 46, the spraying box 4 can be moved to other greenhouses for use. The traveling mechanism 3 is fixedly connected to the mounting frame 22. Specifically, the top of the first housing 31 is fixedly connected to the bottom of the mounting frame 22. When the traveling mechanism 2 moves along the hanging rail 1, the traveling mechanism 3 and the spraying box 4 suspended below the traveling mechanism 3 move synchronously. To distribute the weight of the spraying equipment on the hanging rail 1, the top of the traveling mechanism 3 is equipped with multiple second rollers 332 that can roll in the track 14. Specifically, as shown in the figure... Figure 1-3 As shown, each end of the first housing 31 is provided with two fixed connecting plates 33. The two connecting plates 33 at each end are symmetrically distributed on both sides of the hanging rail 1. Each connecting plate 33 is equipped with two second rollers 332. The second rollers 332 on each side can roll and move in the track 14 on the same side of the support frame 11. Similar to the installation method of the first roller 223 of the walking mechanism 2, the second rollers 332 are connected to one end of the second horizontal shaft 331, and the other end of the second horizontal shaft 331 is connected to the connecting plate 33. By setting multiple second rollers 332, the weight of the spraying equipment is distributed to multiple points on the hanging rail 1 to form multi-point support and prevent the hanging rail 1 from sagging and deforming excessively due to excessive local stress.

[0030] Reference Figure 1-8 The connection between the spray box 4 and the traveling machine box 3 is equipped with a positioning assembly structure. This positioning assembly structure is used to position the spray box 4 at its rising position, that is, to position it after the lifting mechanism 39 has raised the spray box 4. Specifically, for example… Figure 5-7As shown, the positioning assembly structure includes multiple positioning protrusions 45 disposed on the top of the second housing 41. The positioning protrusions 45 are arc-shaped, with small protrusions at the top. One positioning protrusion 45 is disposed at each end of the spraying box 4, and one on each side of the middle section, for a total of four. The bottom of the first housing 31 has positioning grooves 311 corresponding to the positioning protrusions 45. The positioning grooves 311 are located directly above the positioning protrusions 45, and their shape is adapted to the shape of the positioning protrusions 45. When the positioning protrusions 45 rise upwards, they can be inserted into and abut against the positioning grooves 311. At least two positioning grooves 311 are equipped with positioning switches 312. Positioning switches 312 are located on the positioning grooves 311 at both ends of the traveling chassis 3 in the figure, while the two middle positioning grooves 311 do not have positioning switches 312. The two positioning switches 312 ensure accurate docking between the traveling chassis 3 and the spraying box 4, preventing a situation where only one point is docked while the others are not. When the positioning protrusion 45 is inserted upwards into the positioning groove 311 and abuts against it, the positioning protrusion 45 touches the positioning switch 312. When the positioning protrusion 45 touches the positioning switch 312, the docking of the traveling chassis 3 and the spraying box 4 is complete, and the elevator 39 stops operating. Figure 5-8As shown, the interior of the second housing 41 is divided into a storage chamber 47 and an installation chamber 48. The storage chamber 47 stores the sprayed pesticide. The traveling machine housing 3 is equipped with an inlet pipe 32 that can deliver the pesticide into the storage chamber 47. A first sleeve 37 is fitted around the outlet of the inlet pipe 32, extending downwards to the outside of the first housing 31. A second sleeve 473 is located on the top of the storage chamber 47, directly below the first sleeve 37, and its diameter is larger than that of the first sleeve 37. When the spraying box 4 and the traveling machine housing 3 are connected, the first sleeve 37 is inserted into the second sleeve 473. The sleeve prevents the pesticide from splashing outwards when the inlet pipe 32 delivers the pesticide into the storage chamber 47, and also prevents the pesticide from entering the traveling machine housing 3. Alternatively, the sleeve can be omitted, and the inlet pipe 32 can be directly inserted into the storage chamber 47. The greenhouse is equipped with a mixing and application system. The mixing and application system 300 prepares and mixes the pesticide for spraying and delivers it to the spraying tank 4. The mixing and application system 300 and the control system 200 described below are ground stations, typically located on the ground inside the greenhouse for convenient mixing, application, and operation of the sprayer. When the storage chamber 47 needs replenishment, the sprayer is moved along the overhead rail 1 to a position close to the mixing and application system 300. The pipes of the mixing and application system 300 are connected to the inlet pipe 32, and then pesticide is fed into the storage chamber 47. The storage chamber 47 is equipped with a level gauge 471, which detects the pesticide dosage. Pesticide is added when the level reaches a low level and stopped when the level reaches a high level. The level gauge 471 can be a float level gauge, radar level gauge, ultrasonic level gauge, etc., depending on whether the pesticide is liquid or powder. The bottom of the storage chamber 47 has a slag discharge port 472, which is equipped with a control valve. Figure 5-8 As shown, the pesticide storage chamber 47 is connected to the nozzle 42 via a pipe. The nozzle 42 extends outside the spray box 4 and is mounted on a rotating frame 44. When the rotating frame 44 rotates, the nozzle 42 can swing accordingly, thereby spraying pesticides on the crops on both sides and below the travel path. Specifically, a spraying pump 49 is installed at the bottom of the installation chamber 48. The inlet of the spraying pump 49 is connected to the inside of the pesticide storage chamber 47, and the outlet of the spraying pump 49 is connected to the nozzle 42 via a discharge pipe 410. All or part of the discharge pipe 410 is a flexible hose. When the nozzle 42 rotates, the pipe... As a result, deformation occurs, and the rotating frame 44 is poweredly connected to the power output end of the second reduction motor 411. The second reduction motor 411 can rotate in both directions, thereby driving the rotating frame 44 to rotate in both directions. A fan 43 is also installed on the rotating frame 44. The air outlet direction of the fan 43 is towards the nozzle 42 and is the same as the spraying direction of the nozzle 42. It disperses the agent sprayed by the nozzle 42 into a mist, expanding the spraying area and the uniformity of spraying. The fan 43 rotates synchronously with the rotating frame 44. Specifically, a branch 441 is provided on the rotating frame 44, and the fan 43 is installed on the branch 441.

[0031] Reference Figure 1-10The traveling chassis 3 is equipped with a battery 38, which is located inside the first housing 31. The battery 38 has a charging plug 35. A charging socket 102 for charging the battery 38 is provided inside the greenhouse. The charging socket 102 is fixed in position and is usually located near the end of the hanging rail 1. When the traveling chassis 3 moves towards or away from the charging socket 102, the charging plug 35 can be inserted into or detached from the charging socket 102. When the battery 38's charge drops to a certain value, the traveling mechanism 2 moves towards the charging socket 102 until the charging plug 35 is inserted into the charging socket 102 to charge the battery 38. After the charging plug 35 is inserted into the charging socket 102, the walking mechanism 2 moves away from the charging socket 102. The charging socket 102 is disconnected from the charging plug 35. The first geared motor 21, the lifting platform 39, the second geared motor 411, the spraying pump 49, and the fan 43 are all electrically connected to the battery 38. The battery 38 supplies power to the electrical equipment on the walking mechanism 2, the walking chassis 3, and the spraying box 4. In order to locate the charging position of the battery 38, the walking chassis 3 is provided with a limit protrusion 34. The greenhouse is provided with a limit switch 103 that cooperates with the limit protrusion 34. The position of the limit switch 103 is fixed. When the charging plug 35 is inserted into the charging socket 102, the limit protrusion 34 touches the limit switch 103.The greenhouse is equipped with a control system 200. The first reduction motor 21, the elevator 39, the second reduction motor 411, the spraying pump 49, the fan 43, and the pesticide mixing and application system 300 are all connected to the control system 200. The positioning switch 312, the limit switch 103, and the level gauge 471 are all connected to the control system 200 via signal transmission. The control system 200 can also display parameters such as the battery power 38, remaining battery time, the weight of pesticide and water in the pesticide mixing and application system 300, ambient temperature, ambient humidity, light intensity, and carbon dioxide levels. The control system 200 can transmit signals to the equipment and control instruments via wired or wireless means. The walking machine housing 3 is equipped with a walking counter 5 to detect the distance the sprayer travels. When the sprayer sprays pesticides on the crops to the sides and below, it can walk intermittently, stopping after traveling a certain distance. During the pause, the nozzles 42 spray pesticides to the sides. The sprayer swings to spray the pesticide onto the crops on both sides and below. Specifically, the travel counter 5 can measure the number of rotations of the rolling wheel to detect the travel distance of the sprayer. The rolling wheel is equipped with a counter, which counts as the rolling wheel rolls. The rolling wheel rolls on the track 14 of the hanging rail 1. The travel distance of the sprayer is calculated based on the circumference of the rolling wheel and the number of rotations of the rolling wheel. Similar to the installation method of the first roller 223 and the second roller 332, a bracket supporting the rolling wheel is provided on the top of the first housing 31. The rolling wheel is mounted on the bracket through a horizontal shaft. In order to prevent the rolling wheel from slipping on the track 14 during travel, one end of a spring is connected to the horizontal shaft and the other end is connected to the first housing 31. The spring pulls the horizontal shaft down, so that the rolling wheel is pressed tightly against the track 14. Of course, the travel counter 5 can also be a displacement sensor. The travel counter 5 is connected to the control system 200 by signal.

[0032] Operation process: Before spraying the greenhouse crops, place the spray box 4 on the ground below the traveling machine box 3. Lower the suspension rope 36 of the lifting platform 39 downwards until the hook 310 can be engaged with the lifting lug 46. When the lifting platform 39 stops, hook the hook 310 onto the lifting lug 46. Then start the lifting platform 39 to pull the spray box 4 upwards. The lifting speed of the two lifting platforms 39 is the same, and the two ends of the spray box 4 are at the same height when it is raised. The positioning protrusion 45 is inserted upwards into the positioning groove 311 and abuts against the positioning groove 311. When both positioning protrusions 45 touch the corresponding positioning switch 312, the control system 200 controls the lifting platform 39 to stop running, and the spray box 4 stops rising. At this time, the spray box 4 is connected to the traveling machine box 3, and all four positioning protrusions 45 are inserted into the positioning groove 311 and abut against the positioning groove 311. The state is as follows. Figure 6As shown, during spraying, the spraying box 4 and the walking machine box 3 are connected together. The positioning protrusion 45 and the positioning groove 311 also have a limiting function, so that the relative position of the spraying box 4 and the walking machine box 3 remains stable. Then, the first reduction motor 21 is started to drive the walking mechanism 2 to approach the mixing and feeding system 300. When it approaches the mixing and feeding system 300, the walking mechanism 2 stops running and connects the pipeline of the mixing and feeding system 300 to the inlet pipe 32, and begins to feed the agent into the storage chamber 47. When the level gauge 471 shows that the agent in the storage chamber 47 has reached the high level, the feeding into the storage chamber 47 stops, and the pipeline of the mixing and feeding system 300 is separated from the inlet pipe 32. The spraying range is determined, and the stopping time, walking distance, and forward and reverse rotation time of the second reduction motor 411 are set according to the spraying range on both sides of the sprayer's walking trajectory and the amount of spray. After traveling a certain distance, the sprayer pauses for a period of time. During this pause, the sprayer's nozzles 42 swing to both sides, spraying pesticide onto the crops on both sides and below. For example, if the sprayer travels 2 meters and pauses for 20 seconds, the control system 200 controls the walking mechanism 2 to stop after traveling 2 meters. Assuming the distance to the left is 6 meters and the distance to the right is 4 meters, the control system 200 controls the nozzles 42 to swing for 20 seconds, with a 12-second back-and-forth time when swinging to the left and an 8-second back-and-forth time when swinging to the right, ensuring even pesticide application to the crops. The spray pump 49 does not spray pesticide while the sprayer is traveling. Alternatively, the spraying method can be used without pauses. The walking mechanism 2 travels slowly, and the nozzles 42 swing to both sides to spray pesticide during the travel process. However, this method results in slightly lower uniformity. Figure 9 The diagram shows the charging process of the battery 38. The walking mechanism 2 moves towards the charging socket 102. When the charging plug 35 is inserted into the charging socket 102, the limit protrusion 34 touches the limit switch 103. At this time, the control system 200 controls the walking mechanism 2 to stop running and starts charging the battery 38. The limit protrusion 34 and the limit switch 103 also play a positioning role. Figure 10 The diagram shows the spraying box 4 after it is detached from the traveling mechanism 3. When the spraying box 4 is moved to another greenhouse or another sprayer on the overhead rail 1, the hook 310 of the lifting platform 39 is detached from the lifting lug 46. This suspended sprayer is suitable for spraying liquid pesticides. If a suitable powder pump is selected for the spraying pump 49 and ventilation is provided in the outlet pipe of the powder pump, it can also be used for spraying pesticide powder or for crop pollination. The traveling mechanism 2 is equipped with a spring 25 that tightly meshes the gear 27 with the rack 12, preventing the gear 27 from disengaging from the rack 12, thus ensuring stable movement of the traveling mechanism 2 and preventing damage to the gear 27 and rack 12.

[0033] This utility model discloses a suspended sprayer for greenhouses. The traveling mechanism moves along a suspended rail, and the spraying equipment is connected below the traveling mechanism. A spring is installed between the mounting frame and the mounting plate of the traveling mechanism. The spring applies a downward pulling force to the mounting plate, ensuring that the gear and rack connected to the reduction motor mounted on the mounting plate are tightly meshed, preventing disengagement and ensuring stable movement. The spraying equipment includes a traveling chassis and a spraying box. The traveling chassis is fixedly connected to the mounting frame of the traveling mechanism, and the spraying box is suspended below the traveling chassis. The connection between the spraying box and the traveling chassis has a positioning assembly structure, maintaining a stable relative position between the spraying box and the traveling chassis during spraying, which is beneficial for both stable movement and even spraying. The sprayer's electrical equipment is powered by a storage battery. During charging, the traveling chassis is placed near a charging socket, and the battery charging plug is inserted into the charging socket to charge the battery, making charging convenient. The spraying box is detachably connected to the lifting platform, allowing the spraying box to be moved between different locations.

Claims

1. A suspended sprayer for greenhouses, comprising a hanging rail (1) installed below the greenhouse roof and a traveling mechanism (2) capable of traveling on the hanging rail (1), the traveling mechanism (2) being connected to spraying equipment, the hanging rail (1) comprising a support frame (11) and at least one track (14), the support frame (11) being connected to the greenhouse roof, the hanging rail (1) further comprising a toothed rack (12) with its serrated surface facing upwards, the traveling mechanism (2) comprising a mounting frame (22), the mounting frame (22) being provided with a plurality of rollers capable of rolling on the track (14), characterized in that: A vertical guide rail (24) and a mounting plate (23) that can slide up and down along the vertical guide rail (24) are mounted on one side of the mounting bracket (22). A power device that drives the walking mechanism (2) to move back and forth is fixedly mounted on the mounting plate (23). The power output end of the power device is connected to a gear (27) that meshes with a rack (12). One end of the mounting plate (23) is connected to a spring (25), and the other end of the spring (25) is connected to the mounting bracket (22). The spring (25) applies a downward pull to the mounting plate (23). The spraying equipment includes a walking machine (3) and a spraying box (4). The walking machine (3) is fixedly connected to the mounting frame (22). The walking machine (3) is equipped with a lifting device. The spraying box (4) is located below the walking machine (3) and is connected to the lifting device. The connection between the spraying box (4) and the walking machine (3) is equipped with a positioning combination structure for positioning the rising position of the spraying box (4). The power unit of the walking mechanism (2) and the lifting device of the walking machine (3) are both connected to the control system (200).

2. The suspended sprayer for greenhouses according to claim 1, characterized in that: The spray box (4) is provided with a storage chamber (47) for storing medicine. The storage chamber (47) is connected to the nozzle (42) through a pipe. The nozzle (42) is mounted on a rotating frame (44). The rotating frame (44) is powered by a geared motor that can drive the rotating frame (44) to rotate in both directions. The geared motor is controlled by a control system (200).

3. The suspended sprayer for greenhouses according to claim 2, characterized in that: A fan (43) is also installed on the rotating frame (44), and the air outlet direction of the fan (43) is towards the nozzle (42) and is the same as the spraying direction of the nozzle (42).

4. The suspended sprayer for greenhouses according to claim 2, characterized in that: The positioning assembly structure includes multiple positioning protrusions (45) on the top of the spray box (4). The bottom of the walking machine box (3) is provided with positioning grooves (311) corresponding to the positioning protrusions (45). At least two of the positioning grooves (311) are provided with positioning switches (312). When the positioning protrusion (45) is inserted into the positioning groove (311) and abuts against the positioning groove (311), the positioning protrusion (45) touches the positioning switch (312). When the positioning protrusion (45) touches the positioning switch (312), the lifting device stops lifting the spray box (4) upward. The positioning switch (312) is connected to the control system (200) by signal.

5. The suspended sprayer for greenhouses according to any one of claims 2-4, characterized in that: The walking chassis (3) is equipped with a storage battery (38), the storage battery (38) is equipped with a charging plug (35), and the greenhouse is equipped with a fixed charging socket (102) for charging the storage battery (38). When the walking chassis (3) moves towards or away from the charging socket (102), the charging plug (35) can be inserted into the charging socket (102) or detached from the charging socket (102). The power unit of the walking mechanism (2), the lifting device of the walking chassis (3), and the geared motor that drives the rotating frame (44) to rotate are all electrically connected to the storage battery (38).

6. The suspended sprayer for greenhouses according to claim 5, characterized in that: The walking chassis (3) is provided with a limiting protrusion (34) for positioning the charging position. The greenhouse is provided with a limit switch (103) that cooperates with the limiting protrusion (34). When the charging plug (35) is inserted into the charging socket (102), the limiting protrusion (34) touches the limit switch (103). The limit switch (103) is connected to the control system (200) via signal.

7. The suspended sprayer for greenhouses according to claim 2, characterized in that: The walking machine (3) is equipped with a drug inlet pipe (32) that can deliver the medicine into the drug storage chamber (47). The drug inlet pipe (32) is connected to the drug mixing and dispensing system (300) through a pipeline. The drug mixing and dispensing system (300) is connected to the control system (200).

8. The suspended sprayer for greenhouses according to claim 2, characterized in that: The storage chamber (47) is equipped with a level gauge (471), which is connected to the control system (200) via signal. The bottom of the storage chamber (47) is equipped with a slag discharge port (472).

9. The suspended sprayer for greenhouses according to claim 1, characterized in that: The spray box (4) is detachably connected to the lifting device.

10. The suspended sprayer for greenhouses according to claim 1, characterized in that: The walking machine (3) is equipped with a walking counter (5) for detecting the walking distance of the sprayer, and the walking counter (5) is connected to the control system (200) via signal.

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