Plant protection unmanned aerial vehicle with telescopic pesticide spraying head

Abstract

The utility model provides a plant protection unmanned aerial vehicle with a telescopic spraying head, which relates to the technical field of unmanned aerial vehicles and comprises a vehicle body, a liquid storage tank with a circular ring structure is mounted at the bottom of the vehicle body, the spraying head is arranged on one side of the bottom of the liquid storage tank, four cross rods are connected to the outer side of the vehicle body, and two propellers are arranged at the tops of the four cross rods. An adjusting assembly is arranged between the spray head and the liquid storage tank and used for adjusting the use height of the spray head, the adjusting assembly comprises a motor, a lead screw, a lifting block, a lifting pipe and a lifting rod, and a protection assembly is arranged on the outer side of the propeller and used for protecting the propeller. According to the plant protection unmanned aerial vehicle with the telescopic pesticide spraying head, the use height of the spraying head can be adjusted through the adjusting assembly, so that the spraying head can penetrate through crop leaves to spray pesticide liquid on land to fertilize crops, and propellers are protected through the protection assembly; the influence on the rotation of the propeller by the leaves of the crops due to too low flying height of the fuselage when the sprayer sprays the pesticide liquid is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of drones, in particular to a plant protection drone with a telescopic spraying head. Background Art

[0002] A plant protection drone is an unmanned aerial vehicle specially designed for the protection of agricultural and forestry plants. It conducts aerial spraying operations by carrying agricultural inputs such as pesticides, fertilizers, and seeds. The working mode of the plant protection drone greatly improves agricultural production efficiency, reduces labor intensity, and reduces the usage amount of chemical substances through precise pesticide application, being more environmentally friendly.

[0003] However, when the existing plant protection drones spray pesticides on crops, if they encounter some crops with a relatively high growth density, most of the liquid medicine sprayed by the plant protection drones will fall on the leaves of the crops, and the liquid medicine on the leaves will be evaporated by direct sunlight, resulting in uneven fertilization of the crops and thus affecting the growth of the crops. Summary of the Utility Model

[0004] The utility model aims to solve the disadvantages existing in the background art and provides a plant protection drone with a telescopic spraying head. The height of the spraying head can be adjusted through an adjusting component to pass through the leaves of the crops and then spray the liquid medicine, and the rotating of the propellers can be prevented from being affected by the leaves of the crops when the flight height of the fuselage is too low through a protection component.

[0005] To achieve the above object, the utility model provides the following technical solution: A plant protection drone with a telescopic spraying head, comprising: a fuselage, a liquid storage tank in a circular ring structure is installed at the bottom of the fuselage, a spraying head is arranged on one side of the bottom of the liquid storage tank, four cross bars are connected to the outside of the fuselage, two propellers are arranged on the top of each of the four cross bars, an adjusting component is arranged between the spraying head and the liquid storage tank for adjusting the use height of the spraying head, the adjusting component comprises: a motor, a lead screw, a lifting block, a lifting pipe and a lifting rod, a protection component is arranged outside the propellers for protecting the propellers, and the protection component comprises: a support rod, a protection frame, a cross bar and a protection net.

[0006] Optionally, a motor is installed on one side of the bottom of the fuselage. The bottom of the motor is rotatably connected to a lead screw through a motor shaft. A lifting block is arranged outside the lead screw. The top of the nozzle is connected to a lifting pipe. A lifting rod is connected between the lifting block and the lifting pipe. A submersible pump is installed inside the liquid storage tank. The bottom of the submersible pump is connected to a water delivery pipe. One end of the water delivery pipe extends into the lifting pipe. And an annular sealing block is installed inside the lifting pipe. The outer side of the water delivery pipe is fitted with the inner side of the sealing block. A limiting block is connected to the outer side of the water delivery pipe. And the outer side of the limiting block is fitted with the inner wall of the lifting pipe. Among them, the adjustment assembly composed of the motor, the lead screw, the lifting block, the lifting pipe and the lifting rod is used to adjust the use height of the nozzle.

[0007] Optionally, two support rods are connected to one end of each of the four cross bars. And a protective frame in the shape of a circular ring is connected to the top of each of the four cross bars. Four cross bars are installed inside the protective frame. A protective net is arranged between the four cross bars. One side of the outer end of the protective net is connected to a mounting block. The other side of the outer end of the protective net is connected to two fixing blocks. Mounting holes are formed at the tops of the mounting block and the two fixing blocks. A through hole is formed at the top of the cross bar. A stud slidably connected to the mounting hole is installed inside the through hole. A nut is threadedly connected to the outer side of the stud. Among them, the protective assembly composed of the support rods, the protective frame, the cross bars and the protective net is used to protect the propellers.

[0008] Optionally, motor housings are installed on the tops of the four cross bars. A rotating motor is installed inside the motor housing. A driving rod is rotatably connected to the top of the rotating motor. Eight propellers are respectively installed outside the four driving rods. Fixed rods are connected to both sides of the bottom of the fuselage. Two inclined rods are connected to both sides of the bottom of the two fixed rods. A connecting rod is installed between the two inclined rods on the same side. Among them, the rotating motor and the driving rod cooperate to drive the propellers to rotate.

[0009] The utility model provides a plant protection unmanned aerial vehicle with a telescopic spraying head, which has the following beneficial effects:

[0010] The advantages of the utility model are that the use height of the nozzle can be adjusted through the adjustment assembly, so that the nozzle can pass through the leaves of the crops and spray the liquid medicine on the land to fertilize the crops. And the propellers are protected by the protective assembly, avoiding the influence of the leaves of the crops on the rotation of the propellers when the fuselage flies at too low a height during the spraying of the liquid medicine by the nozzle. Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a cross-sectional view of the overall structure of the utility model.

[0013] Figure 3 Schematic diagram of the liquid storage tank structure of the present utility model.

[0014] Figure 4 Schematic diagram of the cross bar structure of the present utility model.

[0015] Figure 5 Schematic diagram of the protective net structure of the present utility model.

[0016] Figure 6 Schematic diagram of the protective frame structure of the present utility model.

[0017] Figure 7 of the present utility model Figure 2 Enlarged view of part A in

[0018] Figure 8 of the present utility model Figure 4 Enlarged view of part B in

[0019] Figures 1-8 In: 1 - fuselage; 101 - liquid storage tank; 102 - spray head; 103 - cross bar; 104 - propeller; 2 - motor; 201 - lead screw; 202 - lifting block; 203 - lifting pipe; 204 - lifting rod; 3 - submersible pump; 301 - water delivery pipe; 302 - sealing block; 303 - limiting block; 4 - support rod; 401 - protective frame; 402 - mounting rod; 403 - protective net; 5 - mounting block; 501 - fixing block; 502 - mounting hole; 503 - through hole; 504 - stud; 505 - nut; 6 - motor housing; 601 - rotating motor; 7 - fixing rod; 701 - inclined rod; 702 - connecting rod. Specific embodiments

[0020] The following describes the present application in detail with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment:

[0022] Please refer to Figures 1-8 In, a plant protection unmanned aerial vehicle with a telescopic spray head provided in this embodiment includes: a fuselage 1, a liquid storage tank 101 in a circular ring structure is installed at the bottom of the fuselage 1, a spray head 102 is provided on one side of the bottom of the liquid storage tank 101, four cross bars 103 are connected to the outside of the fuselage 1, two propellers 104 are provided on the top of each of the four cross bars 103, an adjustment assembly is provided between the spray head 102 and the liquid storage tank 101 for adjusting the use height of the spray head 102, and the adjustment assembly includes: a motor 2, a lead screw 201, a lifting block 202, a lifting pipe 203 and a lifting rod 204. A protection assembly is provided outside the propeller 104 for protecting the propeller 104, and the protection assembly includes: a support rod 4, a protective frame 401, a mounting rod 402 and a protective net 403.

[0023] Among them, a motor 2 is installed on one side of the bottom of the fuselage 1. The bottom of the motor 2 is rotationally connected to a lead screw 201 through a motor shaft. A lifting block 202 is arranged outside the lead screw 201. The top of the nozzle 102 is connected to a lifting pipe 203. A lifting rod 204 is connected between the lifting block 202 and the lifting pipe 203. A lifting hole threadedly connected to the lead screw 201 is opened at the top of the lifting block 202.

[0024] When spraying fertilizers on crops using the nozzle, the motor 2 can be driven to drive the motor shaft to drive the lead screw 201 to rotate. The lifting block 202 can move up and down with the rotation of the lead screw 201 through the lifting hole. When the lifting block 202 moves up and down, it can drive the lifting pipe 203 and the nozzle 102 to move up and down through the lifting rod 204, so as to adjust the use height of the nozzle 102, enabling the nozzle 102 to pass through the leaves of the crops. Furthermore, when the nozzle 102 sprays medicine, the liquid medicine can be sprayed onto the soil, thus avoiding the liquid medicine sprayed being blocked by the crop leaves.

[0025] Among them, a submersible pump 3 is installed inside the liquid storage tank 101. The bottom of the submersible pump 3 is connected to a water delivery pipe 301. One end of the water delivery pipe 301 extends into the lifting pipe 203. A ring-shaped sealing block 302 is installed inside the lifting pipe 203. The outer side of the water delivery pipe 301 is in fit with the inner side of the sealing block 302. A limiting block 303 is connected to the outer side of the water delivery pipe 301, and the outer side of the limiting block 303 is in fit with the inner wall of the lifting pipe 203. A liquid injection pipe is connected to one side of the outer end of the liquid storage tank 101, and a pipe cap is threadedly connected to the pipe orifice of the liquid injection pipe.

[0026] When spraying liquid medicine using the nozzle 102, the submersible pump 3 pumps the liquid medicine in the liquid storage tank 101 into the water delivery pipe 301, and the liquid medicine is transported to the lifting pipe 203 and the nozzle 102 through the water delivery pipe 301, and then the liquid medicine is sprayed out through the nozzle 102. Since the outer side of the limiting block 303 is in fit with the inner wall of the lifting pipe 203 and the outer side of the water delivery pipe 301 is in fit with the inner side of the sealing block 302, it can prevent the liquid medicine from leaking between the lifting pipe 203 and the water delivery pipe 301. And through the mutual limitation between the sealing block 302 and the limiting block 303, it can prevent the water delivery pipe 301 from separating from the lifting pipe 203.

[0027] Among them, two support rods 4 are connected to one end of each of the four cross bars 103, and a protective frame 401 in a ring structure is connected to the top of each of the four cross bars 103. Four mounting rods 402 are installed inside the protective frame 401. A protective net 403 is arranged between the four mounting rods 402. When the fuselage 1 stays on top of the crops to spray liquid medicine, the propeller 104 is protected by the protective frame 401 and the protective net 403, avoiding the propeller 104 colliding with the crop leaves and affecting the stability of the fuselage 1. Among them, the four mounting rods 402 are used to install the protective net 403, and one end of the mounting rod 402 is connected to the motor housing 6.

[0028] One side of the outer end of the protective net 403 is connected with a mounting block 5, and the other side of the outer end of the protective net 403 is connected with two fixing blocks 501. Mounting holes 502 are formed at the tops of the mounting block 5 and the two fixing blocks 501. A through hole 503 is formed at the top of the mounting rod 402. A stud 504 slidably connected with the mounting hole 502 is installed inside the through hole 503, and a nut 505 is threadedly connected to the outside of the stud 504.

[0029] When it is necessary to disassemble the protective net 403, multiple nuts 505 can be sequentially rotated and disassembled from multiple studs 504, and then the multiple studs 504 can be sequentially taken out from the through hole 503 and the mounting hole 502. Then, the four protective nets 403 can be sequentially removed from the protective frame 401. When installing the protective net 403, the protective net 403 is moved inside the protective frame 401, and the two fixing blocks 501 and the mounting block 5 on both sides of the protective frame 401 are respectively placed on the tops of the two mounting rods 402. Then, the stud 504 is passed through the through hole 503, and then the nut 505 is rotated to the outside of the stud 504 until the top of the nut 505 abuts against the bottom of the mounting rod 402, so as to fix the protective net 403. Through the easy disassembly and assembly of the protective net 403, the protective net 403 can be used flexibly to meet different usage requirements.

[0030] On the tops of the four cross bars 103, motor housings 6 are respectively installed. A rotary motor 601 is installed inside the motor housing 6. A driving rod is rotatably connected to the top of the rotary motor 601. Eight propellers 104 are respectively installed on the outside of the four driving rods.

[0031] When using the device, the driving rod is driven by the rotary motor 601 to drive the propellers 104 to rotate. The rotation of the propellers 104 drives the fuselage 1 to take off and move above the crops that need liquid medicine spraying. The rotary motor 601, the submersible pump 3 and the motor 2 are all powered by the battery in the plant protection unmanned aerial vehicle, and the rotary motor 601, the submersible pump 3 and the motor 2 are all signal-connected to the remote control handle of the plant protection unmanned aerial vehicle. Therefore, the start and stop of the rotary motor 601, the submersible pump 3 and the motor 2 can be controlled through the remote control handle of the plant protection unmanned aerial vehicle. And for the control program involved in the present utility model, those skilled in the art can all achieve it according to the same or similar principles in the prior art. This part is not the innovation of the present utility model.

[0032] On both sides of the bottom of the fuselage 1, fixing rods 7 are respectively connected. On both sides of the bottoms of the two fixing rods 7, two inclined rods 701 are respectively connected. A connecting rod 702 is installed between the two inclined rods 701 on the same side. When the fuselage 1 lands, the support frame composed of the fixing rods 7, the inclined rods 701 and the connecting rod 702 supports the fuselage 1.

[0033] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0034] The above has introduced in detail a plant protection unmanned aerial vehicle with a telescopic spraying head provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A plant protection drone with a telescopic spray head, characterized in that: include: A fuselage (1), wherein a liquid storage tank (101) in a circular ring structure is installed at the bottom of the fuselage (1), a nozzle (102) is arranged on one side of the bottom of the liquid storage tank (101), and four cross bars (103) are connected to the outside of the fuselage (1), and two propellers (104) are arranged on the top of each of the four cross bars (103); An adjustment component is provided between the spray head (102) and the liquid storage tank (101) for adjusting the use height of the spray head (102), the adjustment component comprising: a motor (2), a screw rod (201), a lifting block (202), a lifting tube (203) and a lifting rod (204); A protection component is arranged outside the propeller (104) for protecting the propeller (104), and the protection component comprises: a support rod (4), a protection frame (401), a mounting rod (402) and a protection net (403).

2. The plant protection drone with a telescopic spray head according to claim 1, characterized in that: A motor (2) is installed on one side of the bottom of the body (1); the bottom of the motor (2) is rotatably connected to a screw rod (201) via a motor shaft; a lifting block (202) is arranged outside the screw rod (201); a lifting tube (203) is connected to the top of the nozzle (102); and a lifting rod (204) is connected between the lifting block (202) and the lifting tube (203).

3. The plant protection drone with a telescopic spray head according to claim 2, characterized in that: A submersible pump (3) is installed inside the liquid storage tank (101), and a water pipe (301) is connected to the bottom of the submersible pump (3), one end of the water pipe (301) extends to the inside of the lifting pipe (203), and a ring-shaped sealing block (302) is installed inside the lifting pipe (203), the outer side of the water pipe (301) is in contact with the inner side of the sealing block (302), the outer side of the water pipe (301) is connected to a limiting block (303), and the outer side of the limiting block (303) is in contact with the inner wall of the lifting pipe (203).

4. The plant protection drone with a telescopic spray head according to claim 1, characterized in that: One end of each of the four cross bars (103) is connected to two support bars (4), and the tops of the four cross bars (103) are connected to a protective frame (401) in a circular ring structure, four installation bars (402) are installed inside the protective frame (401), and protective nets (403) are arranged between the four installation bars (402).

5. The plant protection drone with a telescopic spray head according to claim 4, characterized in that: One side of the outer end of the protective net (403) is connected to a mounting block (5), and the other side of the outer end of the protective net (403) is connected to two fixing blocks (501). The mounting block (5) and the two fixing blocks (501) are both provided with mounting holes (502) at the top. The top of the mounting rod (402) is provided with a through hole (503). A stud (504) slidably connected to the mounting hole (502) is installed inside the through hole (503), and a nut (505) is threadedly connected to the outer side of the stud (504).

6. The plant protection drone with a telescopic spray head according to claim 1, characterized in that: A motor housing (6) is installed on the top of each of the four cross bars (103), a rotating motor (601) is installed inside the motor housing (6), a driving rod is rotatably connected to the top of the rotating motor (601), and the eight propellers (104) are respectively installed on the outside of the four driving rods.

7. The plant protection drone with a telescopic spray head according to claim 1, characterized in that: Both sides of the bottom of the fuselage (1) are connected to fixing rods (7), both sides of the bottom of the two fixing rods (7) are connected to two oblique rods (701), and a connecting rod (702) is installed between the two oblique rods (701) on the same side.

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