A balancing device for plant protection drones

Abstract

The invention discloses a balancing device for a plant protection UAV, comprising a UAV shell, the left and right end surfaces of the UAV shell are fixedly connected to a frame, the frame is provided with a propeller, the upper end surface of the UAV shell is provided with a placement cavity, the upper end surface of the UAV shell is provided with a cover plate directly above the placement cavity, a medicine box is provided inside the placement cavity, a buoyancy pressure block is placed inside the medicine box, an elastic airbag is fixedly installed on the inner top of the medicine box, the left and right end surfaces of the UAV shell are located directly below the frame and are respectively fixedly connected to one end of a connecting pipe, the other end of the connecting pipe is fixedly installed with a spray head, and the bottom end surface of the frame is fixedly connected to a plurality of support rods. The device is easy to operate, not only can stably position the medicine box, but also can prevent the medicine inside the medicine box from shaking when the medicine inside the medicine box is not full, so that the flight of the UAV is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, and in particular to a balancing device for a plant protection unmanned aerial vehicle. Background Art

[0002] Plant protection UAV, also known as unmanned aerial vehicle, is an unmanned aircraft used for agricultural and forestry plant protection operations. This type of unmanned aircraft consists of three parts: a flight platform (fixed-wing, helicopter, multi-axis aircraft), a navigation flight control, and a spraying mechanism. It can spray pesticides, seeds, powders, etc. through ground remote control or navigation flight control.

[0003] However, when the existing UAV carries a medicine box to spray pesticides on crops, the UAV often changes its flight state due to the terrain during flight. At the same time, since the pesticide carried in the medicine box is in liquid state, when the UAV changes its flight state, the pesticide in the medicine box will produce violent vibrations due to inertia, thereby causing impact on the interior of the UAV and affecting the balance of the fuselage, thereby resulting in poor stability of the UAV during flight. Therefore, a balancing device for a crop protection UAV is proposed. Summary of the invention

[0004] The object of the present invention is to provide a balancing device for a plant protection UAV to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A balancing device for a crop protection drone comprises a drone shell, the left and right end surfaces of the drone shell are fixedly connected to a frame, a propeller is installed on the frame, a placement cavity is opened on the upper end surface of the drone shell, a cover plate is arranged on the upper end surface of the drone shell and directly above the placement cavity, the inner side wall of the placement cavity is fixedly connected to one end of a first spring, the other end of the first spring is fixedly connected to a buffer plate, a medicine box is arranged inside the placement cavity, a buoyancy pressure block is placed inside the medicine box, an elastic airbag is fixedly installed on the inner top of the medicine box, the left and right end surfaces of the drone shell are located directly below the frame and are respectively fixedly connected to one end of a connecting pipe, a spray head is fixedly installed on the other end of the connecting pipe, and a plurality of support rods are fixedly connected to the bottom end surface of the frame.

[0007] Preferably, a guide rod is fixedly connected between the left and right sides of the inner side of the placement cavity, the guide rod is arranged under the buffer plate, the left and right sides of the outer surface of the guide rod are respectively slidably mounted with sliding sleeves, the left and right sides of the outer surface of the guide rod are respectively mounted with second springs, one end of the second spring is fixedly connected to the separated side of the sliding sleeves on the left and right sides, the other end of the second spring is fixedly connected to the inner side wall of the placement cavity, the left and right sides of the inner side of the placement cavity are provided with sliding grooves, the sliding grooves are slidably connected with a first slider, a placement plate is fixedly connected between the first sliders on the left and right sides, the bottom end surface of the placement plate is fixedly connected with a fixed block, the left and right end surfaces of the fixed block are respectively hinged to one end of the connecting rod, the other end of the connecting rod is hinged to the upper end surface of the sliding sleeve, and the medicine box is placed on the placement plate.

[0008] Preferably, a sponge block is fixedly connected to the bottom end surface of the cover plate, and the bottom end surface of the sponge block is tightly fitted with the upper end surface of the medicine box.

[0009] Preferably, a rubber block is fixedly connected to a side of the buffer plate away from the first spring, and one side of the rubber block is in close contact with the outer surface of the medicine box.

[0010] Preferably, two groups of first protective rings are arranged on the upper end surface of the frame and around the outer circumference of the drone shell, two groups of second protective rings are arranged directly above the drone shell, a number of connecting frames are fixedly connected between the outer first protective rings and the outer second protective rings, a number of third springs are fixedly connected between the two groups of first protective rings, and a number of fourth springs are fixedly connected between the two groups of second protective rings.

[0011] Preferably, a shock-absorbing leg is arranged directly below the support rod, and the inner side wall of the shock-absorbing leg is slidably connected with a second slider, a fifth spring is fixedly connected between the bottom end surface of the second slider and the inner bottom end side wall of the shock-absorbing leg, and the bottom end of the support rod is fixedly connected to the upper end surface of the second slider.

[0012] Preferably, a shock-absorbing rubber pad is fixedly connected to the bottom end surface of the shock-absorbing leg.

[0013] Preferably, a plurality of mounting blocks are fixedly connected to the annular side wall of the inner first protective ring, and the mounting blocks are fixedly connected to the upper end surface of the frame by bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the medicine box is taken out from the placement cavity and a certain amount of medicine is poured into the medicine box, and then the medicine box is placed in the placement cavity and covered with a cover plate, and the medicine box is connected to the spraying system at the same time, and the elastic airbag is inflated and expanded by an external air pump to squeeze the buoyancy block until the elastic airbag and the pesticide in the medicine box are squeezed and contacted, thereby reducing the impact of the medicine in the medicine box on the inner wall of the drone shell when the drone is flying, thereby making the drone fly more smoothly, and when spraying the medicine, spraying is carried out through the connecting pipe and the spray head, and the first spring and the buffer plate are provided to place the medicine box more tightly to prevent the medicine box from shaking in the placement cavity. The device is easy to operate, not only to stably position the medicine box, but also to prevent the medicine inside the medicine box from shaking when the medicine inside the medicine box is not full, so that the drone flight is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a front cross-section of the main structure of a balancing device for a plant protection UAV;

[0016] Figure 2 A balancing device for a plant protection drone Figure 1 A schematic diagram of the structure enlargement in the middle;

[0017] Figure 3 This is an enlarged schematic diagram of a cross-section of a medicine box structure of a balancing device for a crop protection UAV;

[0018] Figure 4 A top view of the connection structure between the first protection ring and the second protection ring of a balancing device for a plant protection UAV

[0019] Figure 5 This is a schematic cross-sectional diagram of the connection structure between the support rod and the shock-absorbing leg of a balancing device for a plant protection UAV.

[0020] In the figure: 1-UAV shell, 2-support rod, 3-shock-absorbing leg, 4-connecting pipe, 5-spray head, 6-frame, 7-propeller, 8-connecting frame, 9-mounting block, 10-fourth spring, 11-fifth spring, 12-buffer plate, 13-first spring, 14-placing chamber, 15-sponge block, 16-cover plate, 17-medicine box, 18-placing plate, 19-connecting rod, 20-second spring, 21-guide rod, 22-sleeve, 23-first slider, 24-slide groove, 25-first protective ring, 26-second protective ring, 27-third spring, 28-elastic airbag, 29-buoyancy pressure block, 30-second slider. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 5 The present invention provides a technical solution: a balancing device for a plant protection UAV, comprising a UAV shell 1, the left and right end surfaces of the UAV shell 1 are fixedly connected with a frame 6, the frame 6 is equipped with a propeller 7, the upper end surface of the UAV shell 1 is provided with a placement cavity 14, the upper end surface of the UAV shell 1 is provided with a cover plate 16 directly above the placement cavity 14, the inner side wall of the placement cavity 14 is fixedly connected with one end of a first spring 13, the other end of the first spring 13 is fixedly connected with a buffer plate 12, a medicine box 17 is arranged inside the placement cavity 14, a buoyancy pressure block 29 is placed inside the medicine box 17, an elastic airbag 28 is fixedly installed on the inner top of the medicine box 17, the left and right end surfaces of the UAV shell 1 are located directly below the frame 6 and are respectively fixedly connected with one end of a connecting pipe 4, the other end of the connecting pipe 4 is fixedly installed with a spray head 5, and the bottom end surface of the frame 6 is fixedly connected with a plurality of support rods 2.

[0023] When in use, the medicine box 17 is taken out from the placement cavity 14 and a certain amount of medicine is poured into the medicine box 17, and then the medicine box 17 is placed in the placement cavity 14 and covered with the cover plate 16. At the same time, the medicine box 17 is connected to the spraying system, and the elastic air bag 28 is inflated by an external air pump to squeeze the buoyancy pressure block 29 until the elastic air bag 28 and the pesticide in the medicine box 17 are squeezed and contacted, thereby reducing the impact of the medicine in the medicine box 17 on the inner wall of the drone shell 1 when the drone is flying, thereby making the drone fly more smoothly. When spraying the medicine, it is sprayed through the connecting pipe 4 and the spray head 5. The first spring 13 and the buffer plate 12 are used to place the medicine box 17 more tightly to prevent the medicine box 17 from shaking in the placement cavity 14.

[0024] A guide rod 21 is fixedly connected between the inner left and right sides of the placement cavity 14, and the guide rod 21 is arranged below the buffer plate 12. The left and right sides of the outer surface of the guide rod 21 are respectively slidably covered with sliding sleeves 22, and the left and right sides of the outer surface of the guide rod 21 are respectively covered with second springs 20, one end of the second spring 20 is fixedly connected to the separated side of the sliding sleeves 22 on the left and right sides, and the other end of the second spring 20 is fixedly connected to the inner side wall of the placement cavity 14. A sliding groove 24 is provided on the inner left and right sides of the placement cavity 14, and a first slider 23 is slidably connected to the sliding groove 24. A placement plate 18 is fixedly connected between the first sliders 23 on the left and right sides, and a fixing block is fixedly connected to the bottom end surface of the placement plate 18. The left and right end surfaces of the fixing block are respectively hinged to one end of a connecting rod 19, and the other end of the connecting rod 19 is hinged to the upper end surface of the sliding sleeve 22, and the medicine box 17 is placed on the placement plate 18.

[0025] When subjected to downward force, the placement plate 18 will drive the first slider 23 to move downward along the slide groove 24. When the placement plate 18 moves downward, the hinged connecting rod 19 drives the left and right sleeves 22 to move relative to each other. The relative movement of the left and right first sleeves 22 will compress the left and right second springs 20, which are used to cooperate with the first spring 13 to absorb the generated vibration, thereby not affecting the flight of the drone.

[0026] The bottom end surface of the cover plate 16 is fixedly connected with a sponge block 15 , and the bottom end surface of the sponge block 15 is tightly fitted with the upper end surface of the medicine box 17 . The sponge block 15 is provided to further stably place the medicine box 17 in the placement cavity 14 .

[0027] A rubber block is fixedly connected to the side of the buffer plate 12 away from the first spring 13, and one side of the rubber block is in close contact with the outer surface of the medicine box 17. The rubber block is used to prevent the buffer plate 12 from damaging the medicine box 17 and can further make the medicine box 17 and the buffer plate 12 fit more closely.

[0028] Two groups of first protective rings 25 are arranged on the upper end surface of the frame 6 and around the outer circumference of the drone shell 1. Two groups of second protective rings 26 are arranged directly above the drone shell 1. A number of connecting frames 8 are fixedly connected between the outer first protective rings 25 and the outer second protective rings 26. A number of third springs 27 are fixedly connected between the two groups of first protective rings 25, and a number of fourth springs 10 are fixedly connected between the two groups of second protective rings 26.

[0029] The first protection ring 25, the second protection ring 26, the third spring 27 and the fourth spring 10 are used to protect the drone when the drone falls accidentally and avoid damage to the internal parts of the drone.

[0030] A shock-absorbing leg 3 is arranged directly below the support rod 2, and the inner side wall of the shock-absorbing leg 3 is slidably connected with a second slider 30, and a fifth spring 11 is fixedly connected between the bottom end surface of the second slider 30 and the inner bottom end side wall of the shock-absorbing leg 3, and the bottom end of the support rod 2 is fixedly connected to the upper end surface of the second slider 30.

[0031] When the drone touches the ground, the support rod 2 drives the second slider 30 to move downward and compress the third spring 3, thereby reducing the shock of the drone and further improving the service life of the drone.

[0032] The bottom end surface of the shock-absorbing leg 3 is fixedly connected with a shock-absorbing rubber pad, and the provided shock-absorbing rubber pad is used to make the placement of the drone more stable.

[0033] A plurality of mounting blocks 9 are fixedly connected to the annular side wall of the inner first protection ring 25. The mounting blocks 9 are fixedly connected to the upper end surface of the frame 6 by bolts, so as to facilitate the disassembly and assembly of the first protection ring 25 on the drone for use by personnel.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A balancing device for a plant protection drone, comprising a drone housing (1), characterized in that: The left and right end surfaces of the drone housing (1) are fixedly connected to a frame (6), on which a propeller (7) is installed. The upper end surface of the drone housing (1) is provided with a placement cavity (14), and a cover plate (16) is provided on the upper end surface of the drone housing (1) and directly above the placement cavity (14). The inner side wall of the placement cavity (14) is fixedly connected to one end of a first spring (13), and the other end of the first spring (13) is fixedly connected to a buffer plate (12). A medicine box (17) is provided inside the placement cavity (14), and a buoyancy pressure block (29) is placed inside the medicine box (17). An elastic air bag (28) is fixedly installed on the inner top of the medicine box (17). The left end surface of the drone housing (1) is provided with a placement cavity (14). The right end surface is located directly below the frame (6) and is fixedly connected to one end of a connecting pipe (4). The other end of the connecting pipe (4) is fixedly installed with a spray head (5). The bottom end surface of the frame (6) is fixedly connected to a plurality of support rods (2). A guide rod (21) is fixedly connected between the left and right sides of the placement cavity (14). The guide rod (21) is arranged below the buffer plate (12). The left and right sides of the outer surface of the guide rod (21) are respectively slidably sleeved with a sliding sleeve (22). The left and right sides of the outer surface of the guide rod (21) are respectively sleeved with a second spring (20). One end of the second spring (20) is fixedly connected to the separated side of the sliding sleeve (22) on the left and right sides. The other end of the second spring (20) is fixedly connected to the inner side of the placement cavity (14). The medicine box (17) is fixedly connected to the wall, the left and right sides of the placement cavity (14) are both provided with a slide groove (24), the slide groove (24) is slidably connected with a first slider (23), a placement plate (18) is fixedly connected between the first sliders (23) on the left and right sides, the bottom end surface of the placement plate (18) is fixedly connected with a fixed block, the left and right end surfaces of the fixed block are respectively hinged to one end of a connecting rod (19), the other end of the connecting rod (19) is hinged to the upper end surface of a sliding sleeve (22), the medicine box (17) is placed on the placement plate (18), the bottom end surface of the cover plate (16) is fixedly connected with a sponge block (15), the bottom end surface of the sponge block (15) is tightly fitted with the upper end surface of the medicine box (17), and a portion of the buffer plate (12) away from the first spring (13) is fixedly connected to the medicine box (17). A rubber block is fixedly connected to the side of the support rod (2), one side of the rubber block is in close contact with the outer surface of the medicine box (17), two groups of first protective rings (25) are arranged on the upper end surface of the frame (6) and around the outer periphery of the drone shell (1), two groups of second protective rings (26) are arranged directly above the drone shell (1), a plurality of connecting frames (8) are fixedly connected between the outer first protective ring (25) and the outer second protective ring (26), a plurality of third springs (27) are fixedly connected between the two groups of first protective rings (25), and a plurality of fourth springs (10) are fixedly connected between the two groups of second protective rings (26), a shock absorbing leg (3) is arranged directly below the support rod (2), and a second slider (30) is slidably connected to the inner side wall of the shock absorbing leg (3),A fifth spring (11) is fixedly connected between the bottom end surface of the second slider (30) and the inner bottom end side wall of the shock-absorbing leg (3); the bottom end of the support rod (2) is fixedly connected to the upper end surface of the second slider (30); a shock-absorbing rubber pad is fixedly connected to the bottom end surface of the shock-absorbing leg (3); a plurality of mounting blocks (9) are fixedly connected to the annular side wall of the inner first protective ring (25); the mounting blocks (9) are fixedly connected to the upper end surface of the frame (6) by bolts; the medicine box (17) is taken out of the placement cavity (14) and a certain amount of medicine is poured into the medicine box (17); the medicine box (17) is placed in the placement cavity (14) and covered with a cover plate (16); the medicine box (17) is connected to the spraying system; the elastic air bag (28) is inflated by an external air pump to squeeze the buoyancy pressure block (29) until the elastic air bag (28) and the pesticide in the medicine box (17) are squeezed and contacted.

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