Unmanned aerial vehicle fruit tree disease and pest control device

Abstract

The application discloses a UAV fruit tree disease and pest control device, which comprises a body, a plurality of arms are arranged outward around the body, a motor is installed at the free end of each arm, and a rotor is installed at the upper end of the motor; a rotating spraying arm is rotationally connected to the lower part of each lateral side of the body, a folding spraying arm is rotationally connected to one side of the free end of the rotating spraying arm, and a torsional spring is arranged at the rotating position of the rotating spraying arm and the folding spraying arm; a perforation is formed in the free end of the rotating spraying arm away from the rotating position and extends along the length direction of the rotating spraying arm, a pull wire is movably arranged in the perforation, one end of the pull wire is connected to the folding spraying arm away from the rotating position, and the other end of the pull wire is connected to the body; a liquid storage tank is arranged at the lower end of the body, a water pump is arranged in the liquid storage tank, and a plurality of spraying heads are arranged at the lower end of each of the rotating spraying arm and the folding spraying arm. The spraying range of the UAV can be increased by folding and unfolding, the fruit trees can be fully sprayed with pesticides by flying once, and the pesticide spraying is simpler and more efficient.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a UAV-based device for the prevention and control of fruit tree diseases and pests. Background Technology

[0002] With the increasing maturity of drone technology and the popularization of modern agricultural concepts, the application of plant protection drones is becoming more and more widespread. Using plant protection drones to spray pesticides to prevent and control pests and diseases can not only save manpower and resources, but also keep the operation away from remote control, avoiding contact between spraying personnel and pesticides, thus improving the safety and efficiency of pesticide spraying operations.

[0003] Currently, agricultural drones are mainly used for pest and disease control in farmland. The nozzles are directly mounted on the drone body, and the area that can be sprayed at one time is related to the size of the drone. If used for spraying pesticides in orchards, since most fruit trees are planted in rows and the trees are large, when the drone flies over the rows, it may not be able to spray pesticides on all the trees because they are too large. This requires repeatedly operating the drone to spray pesticides on all the trees, which is troublesome and inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a drone-based fruit tree pest and disease control device that can increase the spraying range of the drone by folding and unfolding, so that pesticides can be sprayed on the fruit trees in one flight, making pesticide spraying simpler and more efficient.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A drone-based fruit tree pest and disease control device includes a body, in which a detachable battery and an integrated circuit board are installed. Multiple arms are arranged outward around the body, and each arm has a motor electrically connected to the integrated circuit board installed at its free end. Each motor has a rotor installed at its upper end.

[0007] Rotary spray arms are rotatably connected to the lower parts of the left and right sides of the machine body. A folding spray arm is rotatably connected to one side of the free end of each rotary spray arm. A torsion spring is provided at the rotation point of each rotary spray arm and the corresponding folding spray arm. The torsion spring is used to drive the folding spray arm to fold towards the rotary spray arm.

[0008] Each rotating spray arm has a through hole extending inwards from its free end away from the rotating part. A pull wire is movably installed in each through hole. One end of each pull wire is connected to the corresponding folding spray arm away from the rotating part, and the other end of each pull wire is connected to the machine body. When the rotating spray arm rotates to be perpendicular to the machine body, the pull wire is tightened to make the folding spray arm rotate to be parallel to the rotating spray arm.

[0009] The lower part of the body is provided with a drive cavity. The lower parts of the left and right sides of the body are provided with movable holes that communicate with the drive cavity. Each rotating spray arm is provided with a swing arm that extends into the drive cavity from the corresponding movable hole at the rotating end of the body. A telescopic motor electrically connected to the integrated circuit board is installed in the drive cavity. The free end of the telescopic shaft of the telescopic motor is connected to a connector. A pull bar is rotatably connected between the connector and each swing arm.

[0010] The lower end of the machine body is provided with a liquid storage tank, and a water pump electrically connected to the integrated circuit board is provided in the liquid storage tank. Each rotating spray arm and each folding spray arm is provided with multiple nozzles at the lower end. The outlet end of the water pump is connected to a T-shaped pipe extending out of the liquid storage tank. The two free ends of the T-shaped pipe are connected to multiple water spray pipes that correspond one-to-one with the nozzles.

[0011] By adopting the above technical solution, when the drone takes off and needs to spray pesticides, the telescopic motor shortens, pulling the swing arm inward, so that the rotating spray arm gradually rotates to be perpendicular to the body. As the rotating spray arm rotates, the cable gradually tightens, pulling the rotating spray arm to gradually rotate to be perpendicular to the body. When spraying, the water pump works, so that the pesticide is sprayed out from the nozzle under the rotating spray arm and the folding spray arm.

[0012] A further feature of the present invention is that: each rotating spray arm is fitted with a freely rotatable first sleeve, each folding spray arm is fitted with a freely rotatable second sleeve, the nozzles are respectively disposed at the lower end of the first sleeve or the second sleeve, each first sleeve is provided with a transmission gear on its outer periphery near one end of the machine body, and angle adjustment gears are rotatably connected to the left and right sides of the machine body near the corresponding rotating spray arm, and a drive motor for driving the angle adjustment gear to rotate and electrically connected to the integrated circuit board is installed in the machine body, when each first sleeve rotates to be perpendicular to the machine body, the transmission gear meshes with the angle adjustment gear, each first sleeve is provided with an insertion port at the end away from its transmission gear and near the perforation, and each second sleeve is provided with an insertion strip that cooperates with the insertion port at the end near the corresponding rotating spray arm and near the side connected to the corresponding pull wire.

[0013] By adopting the above technical solution, if encountering large fruit trees that have not been dwarfed, such as walnut trees, the drone can be controlled to spray the fruit trees from bottom to top. By controlling the drive motor, the angle adjustment gear drives the first and second sleeves to rotate, so that the nozzle is tilted towards the fruit tree to spray pesticides, which is convenient for spraying pesticides on large fruit trees.

[0014] A further feature of the present invention is that: on both the left and right sides of the machine body, near the corresponding rotating spray arm, there are U-shaped rotating grooves with openings facing the corresponding rotating spray arm; each angle adjustment gear rotates at the opening of the corresponding U-shaped rotating groove; each U-shaped rotating groove is connected to a drive gear that meshes with the corresponding angle adjustment gear; and each drive gear is connected to the power output shaft of the corresponding drive motor.

[0015] A further feature of the present invention is that the included angle between the rotating spray arm and the swing arm is greater than or equal to 90 degrees.

[0016] A further feature of the present invention is that the upper end of the liquid storage tank is connected to a liquid filling pipe that passes upward through the machine body, and the upper end of the liquid filling pipe is provided with a detachably connected sealing cap.

[0017] A further feature of the present invention is that the lower parts of both the left and right sides of the machine body are provided with folding grooves that cooperate with the rotating spray arm.

[0018] A further feature of the present invention is that the body is provided with a support frame facing downwards.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Firstly, compared to existing plant protection drones, the spraying range of the drone can be increased by rotating and folding the spraying arm, making it easier to spray pesticides for pest and disease control in orchards. By spraying along the fruit trees, the sprayed pesticides can cover the entire row of fruit trees without having to turn back multiple times to ensure that the fruit trees are fully sprayed, making pesticide spraying simpler and more efficient.

[0021] Secondly, when dealing with large fruit trees, spray from bottom to top along the tree, and adjust the direction of the nozzle to spray the tree more evenly, which can better control pests and diseases in large fruit trees.

[0022] Thirdly, the rotating spray arm and folding spray arm of the present invention can be folded and stored. When not in use, they can be controlled to automatically fold and store, reducing obstruction during normal flight or transportation and making them easier to carry. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is an unfolded diagram of the present invention;

[0025] Figure 3 It is a partial sectional view used to show the internal structure of the machine body and the liquid storage tank;

[0026] Figure 4 Used to demonstrate the connection between the rotating spray arm and the folding spray arm;

[0027] Figure 5 Used to display the angle adjustment gear and drive gear inside the U-shaped rotating groove.

[0028] In the diagram: 1. Body; 11. Battery; 12. Support frame; 13. Folding groove; 14. Drive chamber; 15. Movable hole; 16. U-shaped rotating groove; 2. Arm; 21. Motor; 22. Rotor; 3. Liquid storage tank; 31. Water pump; 32. Liquid filling pipe; 33. Sealing cap; 34. T-tube; 35. Spray pipe; 4. Rotating spray arm; 41. Pull cable; 42. Swing arm; 5. Folding spray arm; 51. Torsion spring; 61. Telescopic motor; 62. Connector; 63. Pull bar; 71. First sleeve; 72. Second sleeve; 73. Nozzle; 74. Transmission gear; 75. Insert; 76. Insert bar; 8. Angle adjustment gear; 81. Drive gear; 82. Drive motor. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] Example, refer to Figure 1-5 A drone-based fruit tree pest and disease control device includes a body 1, inside which is installed a removable battery 11 and an integrated circuit board (not shown). Four arms 2 are arranged outward from the body 1. Each arm 2 has a motor 21 electrically connected to the integrated circuit board installed at its free end. Each motor 21 has a rotor 22 installed at its upper end. A liquid storage tank 3 is arranged at the lower end of the body 1. A water pump 31 electrically connected to the integrated circuit board is arranged inside the liquid storage tank 3. A liquid filling pipe 32 is connected to the upper end of the liquid storage tank 3 and passes upward through the body 1. A sealing cap 33 is detachably connected to the upper end of the liquid filling pipe 32. A support frame 12 is arranged downward from the body 1.

[0033] A folding groove 13 is provided inward on the lower part of both sides of the body 1. Each folding groove 13 is provided from the middle of the body 1 to the rear. A cylindrical rotating spray arm 4 is rotatably connected in each folding groove 13. The rear end of the rotating spray arm 4 extends out of the folding groove 13. The folding groove 13 allows the rotating spray arm 4 to rotate to a maximum of perpendicular to the body 1. A cylindrical folding spray arm 5 is rotatably connected to one side of the free end of each rotating spray arm 4. Two torsion springs 51 are provided at the rotation points of each rotating spray arm 4 and the corresponding folding spray arm 5. The torsion springs 51 are used to drive the folding spray arm 5 to fold in the direction of the rotating spray arm 4.

[0034] Each rotating spray arm 4 has a through hole extending inwards from its free end away from the rotating part. A pull wire 41 is movably installed in each through hole. One end of each pull wire 41 is connected to the corresponding folding spray arm 5 away from the rotating part, and the other end of each pull wire 41 is connected to the machine body 1. When the rotating spray arm 4 rotates to be perpendicular to the machine body 1, the pull wire 41 is tightened, causing the folding spray arm 5 to rotate to be parallel to the rotating spray arm 4.

[0035] A drive chamber 14 is provided in the lower part of the body 1. A movable hole 15 communicating with the drive chamber 14 is provided in the lower part of both the left and right sides of the body 1. Each rotating spray arm 4 is provided with a swing arm 42 extending into the drive chamber 14 from the corresponding movable hole 15 at the rotating end of the body 1. The included angle between the rotating spray arm 4 and the swing arm 42 is greater than or equal to 90 degrees. In this embodiment, the included angle between the rotating spray arm 4 and the swing arm 42 is 135 degrees. A telescopic motor 61 electrically connected to the integrated circuit board is installed in the drive chamber 14. A connector 62 is connected to the free end of the telescopic shaft of the telescopic motor 61. A pull strip 63 is rotatably connected between the connector 62 and each swing arm 42. When the telescopic motor 61 extends, it pushes the swing arm 42 outward, so that the rotating spray arm 4 and the folding spray arm 5 are folded into the folding groove 13. When the telescopic motor 61 shortens, it pulls the swing arm 42 inward, so that the rotating spray arm 4 and the folding spray arm 5 are unfolded outward and perpendicular to the body 1.

[0036] Each rotating spray arm 4 is fitted with a first sleeve 71 that can rotate freely, and each folding spray arm 5 is fitted with a second sleeve 72 that can rotate freely. The lower ends of the first sleeve 71 and the second sleeve 72 are provided with two nozzles 73 arranged along their length. The outlet end of the water pump 31 is connected to a T-shaped pipe 34 that extends out of the liquid storage tank 3. The two free ends of the T-shaped pipe 34 are connected to four water spray pipes 35 that correspond one-to-one with the nozzles 73.

[0037] Each first sleeve 71 is provided with a transmission gear 74 on the outer periphery near one end of the body 1. Each side of the body 1 is provided with a U-shaped rotating groove 16 with its opening facing the corresponding rotating spray arm 4 near the corresponding rotating spray arm 4. An angle adjustment gear 8 is rotatably connected to the opening of each U-shaped rotating groove 16. Each U-shaped rotating groove 16 is connected to a drive gear 81 that meshes with the corresponding angle adjustment gear 8. When each first sleeve 71 rotates to be perpendicular to the body 1, the transmission gear 74 meshes with the angle adjustment gear 8. Two drive motors 82 are installed inside the body 1 to drive the corresponding drive gears 81 to rotate and are electrically connected to the integrated circuit board. Each first sleeve 71 has an insertion port 75 at the end away from its transmission gear 74 and near the perforation. Each second sleeve 72 has an insertion strip 76 that mates with the insertion port 75 at the end near the corresponding rotating spray arm 4 and near the side connected to the corresponding pull wire 41. When both the first sleeve 71 and the second sleeve 72 are rotated to be perpendicular to the machine body 1, the insertion strip 76 extends into the insertion port 75, and the first sleeve 71 and the second sleeve 72 can be driven to rotate by the drive motor 82.

[0038] Working principle: When the drone takes off and needs to spray pesticides, the telescopic motor 61 shortens, pulling the swing arm 42 inward, so that the rotating spray arm 4 gradually rotates to be perpendicular to the body 1. As the rotating spray arm 4 rotates, the pull cable 41 gradually tightens, pulling the rotating spray arm 4 to gradually rotate to be perpendicular to the body 1. When spraying, the water pump 31 works, so that the pesticide is sprayed out from the nozzle 73 below the rotating spray arm 4 and the folding spray arm 5.

[0039] If encountering large fruit trees that have not been dwarfed, such as walnut trees, the drone is controlled to spray the fruit trees from bottom to top. By controlling the drive motor 82, the angle adjustment gear 8 drives the first sleeve 71 and the second sleeve 72 to rotate, so that the nozzle 73 tilts towards the fruit tree to spray pesticides, which is convenient for spraying pesticides on large fruit trees.

[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A drone-based fruit tree pest and disease control device, comprising a body (1), characterized in that: The body (1) is equipped with a removable battery (11) and an integrated circuit board. Multiple arms (2) are arranged around the body (1) and each arm (2) is equipped with a motor (21) electrically connected to the integrated circuit board at its free end. Each motor (21) is equipped with a rotor (22) at its upper end. Rotary spray arms (4) are rotatably connected to the lower parts of the left and right sides of the body (1). A folding spray arm (5) is rotatably connected to one side of the free end of each rotary spray arm (4). A torsion spring (51) is provided at the rotation point of each rotary spray arm (4) and folding spray arm (5). The torsion spring (51) is used to drive the folding spray arm (5) to fold towards the rotary spray arm (4). Each rotating spray arm (4) has a through hole extending inward from the free end away from the rotating part. A pull wire (41) is movably installed in each through hole. One end of each pull wire (41) is connected to the corresponding folding spray arm (5) away from the rotating part, and the other end of each pull wire (41) is connected to the machine body (1). When the rotating spray arm (4) rotates to be perpendicular to the machine body (1), the pull wire (41) is tightened to make the folding spray arm (5) rotate to be parallel to the rotating spray arm (4). The lower part of the body (1) is provided with a drive cavity (14). The lower parts of the left and right sides of the body (1) are provided with movable holes (15) communicating with the drive cavity (14). Each rotating spray arm (4) is provided with a swing arm (42) extending into the drive cavity (14) from the corresponding movable hole (15) at one end of the rotating part of the body (1). A telescopic motor (61) electrically connected to the integrated circuit board is installed in the drive cavity (14). The free end of the telescopic shaft of the telescopic motor (61) is connected to a connector (62). A pull bar (63) is rotatably connected between the connector (62) and each swing arm (42). The lower end of the body (1) is provided with a liquid storage tank (3), and a water pump (31) electrically connected to the integrated circuit board is provided in the liquid storage tank (3). Each rotating spray arm (4) and each folding spray arm (5) is provided with multiple nozzles (73) at the lower end. The outlet end of the water pump (31) is connected to a T-shaped pipe (34) extending out of the liquid storage tank (3). The two free ends of the T-shaped pipe (34) are connected to multiple water spray pipes (35) that correspond one-to-one with the nozzles (73). Each rotating spray arm (4) is fitted with a freely rotatable first sleeve (71), and each folding spray arm (5) is fitted with a freely rotatable second sleeve (72). The nozzles (73) are respectively located at the lower end of the first sleeve (71) or the second sleeve (72). Each first sleeve (71) has a transmission gear (74) on its outer periphery near the end of the machine body (1). Angle adjustment gears (8) are rotatably connected to the left and right sides of the machine body (1) near the corresponding rotating spray arm (4). The machine body (1) is equipped with a gear for driving the angle adjustment gears. The angle adjustment gear (8) rotates and is electrically connected to the integrated circuit board. When each first sleeve (71) rotates to be perpendicular to the body (1), the transmission gear (74) meshes with the angle adjustment gear (8). Each first sleeve (71) has a socket (75) at one end away from its transmission gear (74) and near the perforation. Each second sleeve (72) has a plug (76) that cooperates with the socket (75) at one end near the corresponding rotating spray arm (4) and near the side connected to the corresponding pull wire (41).

2. The unmanned aerial vehicle (UAV) device for controlling fruit tree diseases and pests according to claim 1, characterized in that: On the left and right sides of the body (1), near the corresponding rotating spray arm (4), there are U-shaped rotating grooves (16) with openings facing the corresponding rotating spray arm (4). Each angle adjustment gear (8) rotates at the opening of the corresponding U-shaped rotating groove (16). Each U-shaped rotating groove (16) is rotatably connected to a drive gear (81) that meshes with the corresponding angle adjustment gear (8). Each drive gear (81) is connected to the power output shaft of the corresponding drive motor (82).

3. The unmanned aerial vehicle (UAV) device for controlling fruit tree diseases and pests according to claim 1, characterized in that: The angle between the rotating spray arm (4) and the swing arm (42) is greater than or equal to 90 degrees.

4. The unmanned aerial vehicle (UAV) fruit tree pest and disease control device according to claim 1, characterized in that: The upper end of the liquid storage tank (3) is connected to a liquid filling pipe (32) that passes upward through the body (1), and the upper end of the liquid filling pipe (32) is provided with a detachable sealing cap (33).

5. The unmanned aerial vehicle (UAV) device for controlling fruit tree diseases and pests according to claim 1, characterized in that: The lower parts of both sides of the machine body (1) are provided with folding grooves (13) that cooperate with the rotating spray arm (4).

6. The unmanned aerial vehicle (UAV) device for controlling fruit tree diseases and pests according to claim 1, characterized in that: The body (1) is provided with a support frame (12) facing downward.

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