An anti-wind mechanism for spraying pesticides on drones

Abstract

The present invention relates to the field of agricultural technology and discloses a wind-proof mechanism for spraying pesticides by an unmanned aerial vehicle, which includes a bracket assembly, a movable assembly, a connecting rod assembly and a nozzle assembly; the bracket assembly includes an L-shaped bracket and a wind direction sensor fixedly centered at the top. An installation groove is integrally formed below the front side of the L-shaped bracket, and rotating shaft holes are symmetrically opened on both sides inside the installation groove. A servo motor A is fixedly installed on the inner wall below the L-shaped bracket, and a gear is drivingly installed on the front output shaft of the servo motor A. In the present invention, the servo motor A can drive the nozzle to adjust the front and rear inclination angles, and the servo motor B can drive the nozzle to adjust the left and right inclination angles. Therefore, when spraying pesticides, the orientation of the nozzle can be adjusted in the opposite direction according to the wind direction, so that the liquid medicine can be stably sprayed in the set area, avoiding being blown outside the area by the wind. Therefore, it can achieve a good wind-proof effect, avoid waste of liquid medicine, and improve the quality of pesticide spraying.

Description

Technical Field

[0001] The present invention relates to the technical field of agriculture, and specifically to a wind-proof mechanism for pesticide spraying by an unmanned aerial vehicle (UAV). Background Art

[0002] At present, a plant protection UAV, also known as an unmanned aerial vehicle, as the name implies, is an unmanned aircraft used for agricultural and forestry plant protection operations. This type of unmanned aircraft consists of a flight platform, a navigation and flight control system, and a spraying mechanism. Through ground remote control or navigation and flight control, spraying operations can be achieved, and it can spray pesticides, seeds, powders, etc. It is one of the commonly used tools in modern agriculture, which can effectively save labor and labor costs and has higher efficiency.

[0003] However, the current UAV pesticide spraying equipment at least has the following defects:

[0004] 1. The current UAV pesticide spraying equipment does not have a wind-proof mechanism. Therefore, when spraying pesticides, the liquid medicine is easily scattered by the natural wind and falls outside the spraying area, which is likely to cause waste of the liquid medicine, and the quality and efficiency of pesticide spraying cannot be guaranteed;

[0005] 2. The current UAV pesticide spraying equipment cannot automatically detect the wind direction during pesticide spraying, so it cannot judge the wind direction and take corresponding measures according to the wind direction, resulting in poor spraying stability of the liquid medicine.

[0006] Therefore, we propose a wind-proof mechanism for UAV pesticide spraying. Summary of the Invention

[0007] The purpose of the present invention is to provide a wind-proof mechanism for UAV pesticide spraying, which solves the problems raised in the background art.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A wind-proof mechanism for UAV pesticide spraying, including a bracket assembly, a movable assembly, a connecting rod assembly, and a nozzle assembly;

[0009] The bracket assembly includes an L-shaped bracket and a wind direction sensor fixedly installed in the middle at the top. An installation groove is integrally formed below the front side of the L-shaped bracket. Rotating shaft holes are symmetrically opened on both sides inside the installation groove. A servo motor A is fixedly installed on the inner wall below the L-shaped bracket, and a gear is drivingly installed on the front output shaft of the servo motor A;

[0010] The movable assembly includes a movable plate movably installed in the installation groove. A through hole is penetrated inside the movable plate. A movable block is slidably installed in the through hole. A servo motor B is fixedly installed at the front end of the movable block. A gear column is drivingly installed on the rear rotating shaft of the servo motor B, and the gear column is located behind the movable plate. An arc-shaped rod is fixedly welded above the rear wall of the movable plate. A tooth groove A is opened on the inner wall of the arc-shaped rod, and the gear meshes with the tooth groove A;

[0011] The connecting rod assembly includes a fixed cross bar fixedly welded below the movable plate. A number of groups of connecting rods are movably installed on the fixed cross bar through rotating shaft A. The top of the connecting rod is movably installed with a movable cross bar through rotating shaft B. The fixed cross bar and the movable cross bar are arranged in parallel. Above the middle of the movable cross bar, a frame is integrally formed. Above the inner side of the frame, a tooth groove B is provided. The gear column meshes with the tooth groove B.

[0012] The nozzle assembly includes a fixed sleeve fixedly welded to the bottom of the connecting rod. A nozzle is fixedly installed in the fixed sleeve.

[0013] As a preferred embodiment of the present invention, at the four corners of the top of the L-shaped bracket, support rods are fixedly welded. At the top of the support rods, a fixing plate is fixedly welded. Through holes are symmetrically formed on both sides of the fixing plate.

[0014] As a preferred embodiment of the present invention, a spring is vertically fixedly welded to the bottom of the through hole. The top of the spring is fixedly welded to the bottom of the movable block.

[0015] As a preferred embodiment of the present invention, the spraying orifice of the nozzle faces downward, and a joint is provided at the top of the nozzle.

[0016] As a preferred embodiment of the present invention, rotating shafts are symmetrically arranged above both sides of the movable plate. The rotating shafts are movably installed in the rotating shaft holes. The movable plate is movably installed in the installation groove through the rotating shafts.

[0017] As a preferred embodiment of the present invention, sliding blocks are symmetrically arranged on the outer walls of both sides of the movable block. Sliding grooves are symmetrically formed on the inner walls of both sides of the through hole. The sliding blocks are slidably installed in the sliding grooves.

[0018] As a preferred embodiment of the present invention, a control module is fixedly installed at the rear side of the bottom of the L-shaped bracket. The control module is electrically connected to the wind direction sensor, servo motor A, and servo motor B.

[0019] As a preferred embodiment of the present invention, a limiting plate is fixedly welded to the top end of the arc-shaped rod.

[0020] As a preferred embodiment of the present invention, the movable cross bar is movably connected to the top of the connecting rod through rotating shaft B, and the fixed cross bar is movably connected to the middle of the connecting rod through rotating shaft A.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The windproof mechanism for pesticide spraying of the drone of the present invention can drive the gear to rotate through the servo motor A, thereby driving the arc-shaped rod and the movable plate to move back and forth around the rotating shaft, so as to realize the adjustment of the front and rear inclination angles of the nozzle. And through the servo motor B, the gear column can be driven to rotate on the tooth groove B, thereby driving the movable cross bar to move left and right, and then driving the connecting rod and the nozzle to adjust the left and right inclination angles. Therefore, when spraying pesticides, the orientation of the nozzle can be adjusted in the opposite direction according to the wind direction, so that the liquid medicine can be stably sprayed in the set area, avoiding being blown outside the area by the wind. Therefore, it can achieve a good windproof effect, avoid waste of liquid medicine, and improve the quality of pesticide spraying.

[0023] 2. The windproof mechanism for pesticide spraying of the drone of the present invention can automatically detect the wind direction through the wind direction sensor, and set corresponding thresholds through the control module to automatically control the operation of the servo motor A or the servo motor B, so that it can automatically detect the wind direction and automatically adjust the orientation of the nozzle, making it more intelligent and improving work efficiency.

[0024] 3. The windproof mechanism for pesticide spraying of the drone of the present invention enables the servo motor B and the gear column to move up and down through the up and down sliding of the movable block in the through hole, and the gear column can always fit the tooth groove B in cooperation with the spring, so that the movable cross bar can be stably driven by the gear column to move left and right when moving up and down, avoiding the gear column being unable to mesh with the tooth groove B due to a small amount of up and down movement when the movable cross bar moves left and right. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, it is obvious that the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of the overall structure of the windproof mechanism for pesticide spraying of the drone of the present invention;

[0027] Figure 2 It is a schematic side view structure of the L-shaped bracket and the movable plate of the windproof mechanism for pesticide spraying of the drone of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the movable plate of the windproof mechanism for pesticide spraying of the drone of the present invention;

[0029] Figure 4 It is a schematic rear view structure of the movable block of the windproof mechanism for pesticide spraying of the drone of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the L-shaped bracket of the windproof mechanism for pesticide spraying of the drone of the present invention;

[0031] Figure 6 This is a schematic structural diagram of the connecting rod and the fixed sleeve of the windproof mechanism for spraying pesticides by the UAV of the present invention.

[0032] In the figure: 1. Bracket assembly; 11. L-shaped bracket; 111. Installation groove; 112. Rotating shaft hole; 12. Support rod; 13. Fixed plate; 131. Installation hole; 14. Wind direction sensor; 15. Control module; 16. Servo motor A; 161. Gear; 17. Arc-shaped rod; 171. Tooth groove A; 172. Limit plate; 2. Movable assembly; 21. Movable plate; 211. Perforation; 212. Rotating shaft; 213. Chute; 22. Movable block; 221. Slide block; 23. Servo motor B; 231. Gear column; 24. Spring; 3. Connecting rod assembly; 31. Movable cross bar; 311. Rotating shaft B; 312. Frame; 313. Tooth groove B; 32. Connecting rod; 33. Fixed cross bar; 331. Rotating shaft A; 4. Sprayer assembly; 41. Sprayer; 42. Connector; 43. Fixed sleeve. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , a windproof mechanism for spraying pesticides by a UAV, including a bracket assembly 1, a movable assembly 2, a connecting rod assembly 3, and a sprayer assembly 4;

[0036] The bracket assembly 1 includes an L-shaped bracket 11. An installation groove 111 is integrally formed at the lower part of the front side of the L-shaped bracket 11. The movable assembly 2 includes a movable plate 21 movably installed in the installation groove 111. A perforation 211 is formed through the inside of the movable plate 21, and a movable block 22 is slidably installed in the perforation 211. The movable plate 21 can rotate flexibly in the installation groove 111 to realize the adjustment of the inclination angle, and the movable block 22 can move up and down in the perforation 211 to realize the lifting.

[0037] Please refer to Fig. 3. A spring 24 is vertically fixedly welded to the bottom of the perforation 211, and the top of the spring 24 is welded and fixed to the bottom of the movable block 22; the spring 24 can provide a certain thrust, so as to push the movable block 22 to move upward.

[0038] Please refer toFigure 3 and Figure 4 On both outer walls of the movable block 22, sliding blocks 221 are symmetrically arranged. On both inner walls of the perforation 211, sliding grooves 213 are symmetrically formed. The sliding blocks 221 are slidably installed in the sliding grooves 213. By sliding the sliding blocks 221 in the sliding grooves 213, the movable block 22 can be limited, ensuring that the vertical movement of the movable block 22 will not shift or fall off.

[0039] Please refer to Figure 1-2 , a servo motor B23 is fixedly installed at the front end of the movable block 22. A gear column 231 is drivingly installed on the rear end rotating shaft of the servo motor B23, and the gear column 231 is placed behind the movable plate 21. An arc-shaped rod 17 is fixedly welded above the rear wall of the movable plate 21. The servo motor B23 can drive the gear column 231 to rotate.

[0040] Please refer to Figure 1 , the connecting rod assembly 3 includes a fixed cross bar 33 fixedly welded below the movable plate 21. A plurality of groups of connecting rods 32 are movably installed on the fixed cross bar 33 through a rotating shaft A331. The top of the connecting rod 32 is movably installed with a movable cross bar 31 through a rotating shaft B311. The fixed cross bar 33 and the movable cross bar 31 are arranged in parallel. When the movable cross bar 31 moves left and right, it can drive the connecting rod 32 to rotate around the rotating shaft A331, and at this time, the inclination angle of the connecting rod 32 can be adjusted.

[0041] Please refer to Figure 1 , the movable cross bar 31 is movably connected to the top of the connecting rod 32 through a rotating shaft B311, and the fixed cross bar 33 is movably connected to the middle of the connecting rod 32 through a rotating shaft A331. Through the rotating shaft B311, the top of the connecting rod 32 can rotate on the movable cross bar 31, and through the rotating shaft A331, the connecting rod 32 can rotate around the fixed cross bar 33.

[0042] Please refer to Figure 1 and Figure 4 , above the middle of the movable cross bar 31, a frame 312 is integrally formed. Above the inner side of the frame 312, a tooth groove B313 is formed. The gear column 231 and the tooth groove B313 are meshed with each other. By rotating the gear column 231 on the tooth groove B313, the movable cross bar 31 can be driven to move left and right.

[0043] During use, starting the servo motor B23 can drive the gear column 231 to rotate clockwise or counterclockwise. When the gear column 231 rotates within the tooth groove B313, it can drive the frame 312 and the movable cross bar 31 to move left and right. At the same time, the movable cross bar 31 will also move slightly up and down. At this time, the spring 24 can push the movable block 22 and the servo motor B23 upward, so that the gear column 231 can always mesh with the tooth groove B313 when the frame 312 moves up and down. As the movable cross bar 31 moves left and right, it can drive the connecting rod 32 to rotate around the rotating shaft A331. At this time, the connecting rod 32 is inclined, so that the spray head 41 installed below can be adjusted for the left and right tilt angles.

[0044] Embodiment 2

[0045] Please refer to Figure 1-2 , on both sides of the inner part of the installation groove 111, rotating shaft holes 112 are symmetrically opened. Above the two sides of the movable plate 21, rotating shafts 212 are symmetrically arranged. The rotating shafts 212 are movably installed in the rotating shaft holes 112. The movable plate 21 is movably installed in the installation groove 111 through the rotating shafts 212; by rotating the rotating shafts 212 within the rotating shaft holes 112, the movable plate 21 can freely rotate within the installation groove 111, so as to realize the adjustment of the front and rear tilt angles.

[0046] Please refer to Figure 2 , on the inner wall of the lower part of the L-shaped bracket 11, a servo motor A16 is fixedly installed. A gear 161 is drivably installed on the front end output shaft of the servo motor A16. A tooth groove A171 is opened on the inner wall of the arc-shaped rod 17. The gear 161 meshes with the tooth groove A171; by the servo motor A16, the gear 161 can be driven to rotate on the tooth groove A171, so that the interactive arc-shaped rod 17 can make a circular motion around the rotating shaft 212. At this time, the movable plate 21 can also rotate around the rotating shaft 212 to realize the automatic adjustment of the front and rear tilt angles.

[0047] During use, starting the servo motor A16 can drive the gear 161 to rotate on the tooth groove A171, so that the arc-shaped rod 17 can rotate clockwise or counterclockwise, and the movable plate 21 can rotate clockwise or counterclockwise around the rotating shaft 212, so as to realize the adjustment of the front and rear tilt angles of the movable plate 21.

[0048] Embodiment 3

[0049] Please refer to Figure 1 and Figure 6 , the spray head assembly 4 includes a fixed sleeve 43 fixedly welded to the bottom of the connecting rod 32. A spray head 41 is fixedly installed in the fixed sleeve 43; the fixed sleeve 43 can be used for the fixed connection of the spray head 41 and the connecting rod 32.

[0050] Please refer to Figure 1, the spraying orifice of the nozzle 41 faces downward, and a connector 42 is provided at the top of the nozzle 41; the connection between the nozzle 41 and the infusion hose can be realized through the connector 42.

[0051] During use, the nozzle 41 can be fixedly installed through the fixing sleeve 43. After the nozzle 41 is installed, it can be fixedly connected to the output end of the infusion hose through the connector 42, and the liquid medicine can be sprayed out by using the nozzle 41.

[0052] Embodiment 4

[0053] The bracket assembly 1 includes an L-shaped bracket 11 and a wind direction sensor 14 fixedly centered at the top. A control module 15 is fixedly installed at the rear side of the bottom of the L-shaped bracket 11. The control module 15 is electrically connected to the wind direction sensor 14, the servo motor A 16, and the servo motor B 23; by arranging the wind direction sensor 14 between the L-shaped bracket 11 and the fixing plate 13, it can effectively avoid the influence of the downward blowing of the fan blades during the operation of the drone on the detection of the wind direction.

[0054] During use, the wind direction can be detected by the wind direction sensor 14 when the drone hovers, and the control module 15 can set a control threshold. Therefore, the orientation of the nozzle 41 can be automatically controlled according to the wind direction, and the orientation of the nozzle 41 can be adjusted in the opposite direction to the detected wind direction. Therefore, the influence of the wind direction on spraying can be effectively reduced. For example, taking the drone as a reference point, when the wind direction is north wind, the orientation of the nozzle 41 can be automatically adjusted to the south, and when the wind direction is northeast wind, the orientation of the nozzle 41 can be automatically adjusted to the southwest direction. In short, the orientation of the nozzle 41 can always be adjusted to be opposite to the natural wind direction.

[0055] In an alternative embodiment, support rods 12 are fixedly welded at the four corners of the top of the L-shaped bracket 11. The top of the support rods 12 is fixedly welded with a fixing plate 13. Through holes 131 are symmetrically formed through both sides of the fixing plate 13. In this embodiment (please refer to Figure 1 ) the overall mechanism can be fixedly installed at the bottom of the drone through the through holes 131 on both sides of the top of the fixing plate 13.

[0056] In an alternative embodiment, a limiting plate 172 is fixedly welded at the top of the arc-shaped rod 17. In this embodiment (please refer to Figure 2 ) the limiting plate 172 can prevent the gear 161 from disengaging from the tooth groove A 171 and can limit the stroke of the arc-shaped rod 17.

[0057] When the present invention is in use, the mechanism can be fixedly installed at the bottom of the drone through the fixing plate 13 first. Then the drone can take off and hover in the air. When hovering, the wind direction sensor 14 can detect the wind direction of the natural wind. Subsequently, the control module 15 can automatically control the start of the servo motor A 16 or the servo motor B 23 according to the wind direction. When the servo motor A 16 starts, it can drive the gear 161 to rotate within the tooth groove A 171. At this time, it can drive the arc-shaped rod 17 and the movable plate 21 to rotate around the rotating shaft 212, thereby driving the lower fixed cross bar 33, movable cross bar 31, connecting rod 32, fixed sleeve 43 and nozzle 41 to tilt forward and backward. At this time, the nozzle 41 can realize the adjustment of the front and rear inclination angles. By starting the servo motor B 23, it can drive the gear column 231 to rotate within the tooth groove B 313. At this time, it can drive the movable cross bar 31 to move reciprocally left and right. At this time, it can drive the connecting rod 32 to rotate around the rotating shaft A 331, thereby realizing the adjustment of the left and right inclination angles of the nozzle 41, so that the nozzle 41 can be tilted left and right. At the same time, the top of the connecting rod 32 can rotate around the rotating shaft B 311. At the same time, the movable cross bar 31 will also move slightly up and down. At this time, the spring 24 can push the movable block 22, the servo motor B 23 and the gear column 231 upward, so that the gear column 231 can always mesh with the tooth groove B 313 as the movable cross bar 31 moves upward. When the movable cross bar 31 moves downward, it can squeeze the spring 24.

[0058] It should be noted that the present invention is a wind-proof mechanism for pesticide spraying by drones. Its components are all common standard parts or parts known to those skilled in the art. Its structure and principle can be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

Claims

1. A wind prevention mechanism for a drone spraying medicine, characterized in that: It includes a bracket assembly (1), a movable assembly (2), a connecting rod assembly (3) and a nozzle assembly (4); The bracket assembly (1) includes an L-shaped bracket (11) and a wind direction sensor (14) fixedly installed in the center of the top of the L-shaped bracket (11). An installation groove (111) is integrally formed below the front side of the L-shaped bracket (11). Rotating shaft holes (112) are symmetrically opened on both sides inside the installation groove (111). A servo motor A (16) is fixedly installed on the inner wall below the L-shaped bracket (11), and a gear (161) is drivingly installed on the front output shaft of the servo motor A (16); The movable assembly (2) includes a movable plate (21) movably installed in the installation groove (111). A through hole (211) is formed through the inside of the movable plate (21). A movable block (22) is slidably installed in the through hole (211). A servo motor B (23) is fixedly installed at the front end of the movable block (22). A gear column (231) is drivingly installed on the rear rotating shaft of the servo motor B (23), and the gear column (231) is located at the rear side of the movable plate (21). An arc-shaped rod (17) is fixedly welded above the rear wall of the movable plate (21). A tooth groove A (171) is formed on the inner wall of the arc-shaped rod (17). The gear (161) meshes with the tooth groove A (171); The connecting rod assembly (3) includes a fixed cross bar (33) fixedly welded below the movable plate (21). A plurality of groups of connecting rods (32) are movably installed on the fixed cross bar (33) through a rotating shaft A (331). The top of the connecting rod (32) is movably installed with a movable cross bar (31) through a rotating shaft B (311). The fixed cross bar (33) and the movable cross bar (31) are arranged in parallel. A frame (312) is integrally formed above the middle of the movable cross bar (31). A tooth groove B (313) is formed above the inner side of the frame (312). The gear column (231) meshes with the tooth groove B (313); The nozzle assembly (4) includes a fixed sleeve (43) fixedly welded to the bottom of the connecting rod (32). A nozzle (41) is fixedly installed in the fixed sleeve (43).

2. The windproof mechanism for spraying pesticides on drones according to claim 1, wherein Support rods (12) are fixedly welded at the four corners of the top of the L-shaped bracket (11). A fixing plate (13) is fixedly welded to the top of the support rods (12). Mounting holes (131) are symmetrically formed through both sides of the fixing plate (13).

3. The wind-proof mechanism for pesticide spraying of an unmanned aerial vehicle according to claim 1, characterized in that, A spring (24) is vertically fixedly welded to the bottom of the through hole (211). The top of the spring (24) is welded and fixed to the bottom of the movable block (22).

4. The windproof mechanism for spraying pesticides on drones according to claim 1, characterized in that, The spraying orifice of the nozzle (41) faces downward, and a joint (42) is arranged at the top of the nozzle (41).

5. The windproof mechanism for pesticide spraying of an unmanned aerial vehicle according to claim 1, characterized in that, Rotating shafts (212) are symmetrically arranged above both sides of the movable plate (21). The rotating shafts (212) are movably installed in the rotating shaft holes (112). The movable plate (21) is movably installed in the installation groove (111) through the rotating shafts (212).

6. The windproof mechanism for pesticide spraying of an unmanned aerial vehicle according to claim 1, wherein, Slider blocks (221) are symmetrically arranged on the outer walls on both sides of the movable block (22). Chute grooves (213) are symmetrically formed on the inner walls on both sides of the perforation (211). The slider blocks (221) are slidably mounted in the chute grooves (213).

7. The wind prevention mechanism for pesticide spraying by an unmanned aerial vehicle according to claim 1, characterized in that, A control module (15) is fixedly mounted on the rear side of the bottom of the L-shaped bracket (11). The control module (15) is electrically connected to the wind direction sensor (14), the servo motor A (16), and the servo motor B (23) by electrical signals.

8. The wind prevention mechanism for spraying pesticides on drones according to claim 1, characterized in that, A limiting plate (172) is fixedly welded to the top end of the arc-shaped rod (17).

9. The wind-proof mechanism for pesticide spraying by an unmanned aerial vehicle according to claim 1, wherein, The movable cross bar (31) is movably connected to the top of the connecting rod (32) through a rotating shaft B (311), and the fixed cross bar (33) is movably connected to the middle of the connecting rod (32) through a rotating shaft A (331).

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