Unmanned aerial vehicle powder spraying device and powder spraying method thereof

Abstract

The unmanned aerial vehicle powder spraying device comprises an unmanned aerial vehicle body, a base, a mounting mechanism, a powder supply mechanism, a conveying mechanism, a powder spraying mechanism and a swing mechanism, and the base is fixedly arranged between undercarriages of the unmanned aerial vehicle body and fixedly connected with the undercarriages; the mounting mechanism is arranged on the top surface of the base; the medicine supply mechanism is arranged on the mounting mechanism; the conveying mechanism is connected with the bottom of the medicine supply mechanism; the swinging mechanism is arranged on the base and is positioned below the mounting mechanism; and the powder spraying mechanism is respectively connected with the conveying mechanism and the swinging mechanism. The invention further discloses a powder spraying method of the powder spraying device. Quantitative spraying of medicine powder can be achieved, and meanwhile the spraying uniformity of the medicine powder is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plant protection UAVs, and in particular relates to a UAV powder spraying device and a powder spraying method thereof. Background Art

[0002] In recent years, with the continuous development of agricultural technology, aerial plant protection technology has developed rapidly as an important part of modern agriculture and has attracted widespread attention. Compared with traditional ground machinery and manual spraying, plant protection drones not only have high operating efficiency and high pesticide utilization rate, but can also solve operational problems under complex plots. Plant protection drones are equipped with spraying systems and ground sensors to complete disaster investigation, pesticide spraying, pest and disease control and other operational tasks. They are fast and efficient, widely adaptable, and easy to operate. With the accelerated advancement of my country's agricultural modernization process, plant protection drones have become an important force in promoting agricultural mechanization, which is of great significance to alleviating rural labor shortages, improving agricultural productivity and resource utilization, enhancing pest and disease prevention and control capabilities, and ensuring national food and ecological security.

[0003] In the early days, UAV crop protection research was mainly focused on spraying, and there were few cases of plant protection UAVs that sprayed powder. The reason is that the working principle of spraying powder and smoke is more complicated than that of spraying. Therefore, the weight and volume of the equipment are larger than that of the spray device, which requires a higher load capacity of the UAV and more structural adjustments and modifications of the UAV. It is difficult to apply it to UAVs with limited load capacity and mounting space. However, with the rapid development of UAV technology, powder spraying plant protection UAVs have gradually been used.

[0004] In the prior art, when a powder spraying drone is in operation, there are technical problems such as difficulty in controlling the amount of powder sprayed and uneven powder spraying. Summary of the invention

[0005] The object of the present invention is to provide a UAV powder spraying device and a powder spraying method thereof to solve the technical problems raised in the above background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A powder spraying device for an unmanned aerial vehicle comprises an unmanned aerial vehicle body, a base, a mounting mechanism, a medicine supply mechanism, a conveying mechanism, a powder spraying mechanism and a swinging mechanism, wherein the base is fixedly arranged between the landing gears of the unmanned aerial vehicle body and fixedly connected to the landing gears; the mounting mechanism is arranged on the top surface of the base; the medicine supply mechanism is arranged on the mounting mechanism; the conveying mechanism is connected to the bottom of the medicine supply mechanism; the swinging mechanism is arranged on the base and located below the mounting mechanism; and the powder spraying mechanism is respectively connected to the conveying mechanism and the swinging mechanism.

[0008] Furthermore, the installation mechanism includes a support column and a mounting plate; the support column is vertically arranged and distributed in a rectangular interval, and its bottom end is fixedly connected to the base; the mounting plate is horizontally arranged on the top surface of the support column.

[0009] Furthermore, the medicine supply mechanism includes a medicine box; the medicine box is vertically arranged on the top surface of the mounting plate, and a medicine adding port is provided on the upper part of the side wall thereof, and a discharge port is provided in the middle part of the bottom surface.

[0010] Further, the conveying mechanism includes a connecting box, a material distribution pipe, a sleeve, a rotating rod, a first spiral blade, a second spiral blade, a conveying motor, and a conveying pipe; the connecting box is vertically arranged, its interior is hollow, and its top surface is open, and the top surface of the connecting box is fixedly connected to the bottom of the medicine box; the material distribution pipe is a vertically arranged inverted "Y"-shaped structure, and its top surface is connected to the discharge port of the medicine box; the sleeve is horizontally arranged in the connecting box, and its two ends are fixedly connected to the side walls of the connecting box, and the left and right sides of the top surface of the sleeve correspond to the bottom surface of the material distribution pipe. Feed ports connected to the material distribution pipe are opened, and the left and right sides of the bottom surface are respectively opened; the rotating rod is horizontally arranged in the sleeve, and its two ends are rotatably connected to the inner side wall of the connecting box through bearings, and the right end of the rotating rod extends to the right side wall of the connecting box; the first spiral blade and the second spiral blade are respectively arranged on the rotating rod at intervals on the left and right, and the rotation directions of the first spiral blade and the second spiral blade are opposite; the conveying motor is arranged on the right side wall of the connecting box and is transmission-connected to the right end of the rotating rod; the conveying pipe is vertically arranged, and its top end is respectively connected to the discharge port on the bottom surface of the sleeve.

[0011] Furthermore, there are two powder spraying mechanisms, including a barrel and a powder spraying pipe; the barrel is vertically arranged, and an opening is provided on its top surface, and the top surfaces of the barrels of the two powder spraying mechanisms are respectively connected to the conveying pipes; the top end of the powder spraying pipe is connected to the bottom surface of the barrel.

[0012] Furthermore, the swing mechanism includes a swing component and a dual-axis motor; the swing component is provided with two corresponding powder spraying mechanisms, the dual-axis motor is fixedly connected to the base and is located between the two swing components, and the two output shafts of the dual-axis motor are respectively facing left and right directions and are transmission-connected to the swing component.

[0013] Furthermore, the swing assembly includes a fixed part, a swing shaft, a connecting shaft, a swing part, a connecting rod, a ring part, a connecting part, and a transmission shaft; the fixed part is horizontally arranged and fixedly sleeved on the middle part of the outer side wall of the barrel; the swing shaft is vertically arranged, and its bottom end is rotatably connected to the base, and the top end passes upward through the side opposite to the fixed part and is fixedly connected to the fixed part; the connecting shaft is horizontally arranged front and back and connected to the lower part of the swing shaft; the swing part is a horizontally arranged U-shaped structure, and the two arms of the swing part are rotatably connected to the two ends of the connecting shaft; the connecting rod is horizontally arranged left and right on the side opposite to the two swing parts; the ring part is vertically arranged; the connecting part is vertically fixed in the ring part, the middle part protrudes toward the direction of the dual-axis motor, and the upper part of the connecting part is rotatably connected to the connecting rod; the transmission shaft is horizontal, the left end of which is fixedly connected to the middle of the connecting part, and the other end is respectively connected to the output shaft of the dual-axis motor for transmission.

[0014] Furthermore, it also includes a fixing mechanism; the fixing mechanism includes a fixing block and a fixing angle plate; the fixing block is vertically arranged on the left and right sides of each side of the connection box, and a threaded hole is opened on the fixing block; the fixing angle plate is vertically arranged on the top surface of the mounting plate and is arranged corresponding to the four corners of the connection box, and the fixing angle plate has connecting holes corresponding to the threaded holes of the fixing block.

[0015] A powder spraying method for a powder spraying device of an unmanned aerial vehicle, when performing a powder spraying operation, according to the powder spraying amount required in different working areas, the conveying amount of a conveying mechanism is adjusted, and the powder is quantitatively fed into the powder spraying mechanism, and at the same time, a swing mechanism drives the powder spraying mechanism to swing, and the powder spraying mechanism sprays powder on the working area.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention controls the rotation speed of the rotating rod by setting a conveying mechanism through a conveying motor, thereby adjusting the feeding speed of the powder. Since the first spiral blade and the second spiral blade rotate in opposite directions, the powder can be conveyed in opposite directions and quantitative feeding can be achieved. The operator can flexibly and accurately adjust the spraying amount of the powder according to the density of crops in different operating areas.

[0018] 2. The present invention provides a swing mechanism to make the powder spraying mechanism swing on a horizontal plane, thereby avoiding the powder from being concentratedly sprayed on certain areas, and allowing the powder to cover the working area more widely and evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 is a schematic diagram of the connection mechanism of the base of the present invention;

[0021] Figure 3It is a schematic diagram of the connection structure of the mounting mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection structure between the medicine supply mechanism and the conveying mechanism of the present invention;

[0023] Figure 5 is a cross-sectional view of the present invention;

[0024] Figure 6 It is a schematic diagram of the connection structure between the spraying mechanism and the swinging mechanism of the present invention;

[0025] In the figure, 1- drone body;

[0026] 2- Base;

[0027] 3-mounting mechanism; 31-support column; 32-mounting plate;

[0028] 4-drug supply mechanism; 41-drug box; 411-drug adding port; 412-discharging port;

[0029] 5-conveying mechanism; 51-connecting box; 52-distributing pipe; 53-sleeve; 54-rotating rod; 55-first spiral blade; 56-second spiral blade; 57-conveying motor; 58-conveying pipe;

[0030] 6-powder spraying mechanism; 61-barrel; 62-powder spraying tube

[0031] 7-swing mechanism; 71-dual-axis motor; 72-swing assembly; 721-fixed member; 722-swing shaft; 723-connecting shaft; 724-swing member; 725-connecting rod; 726-ring member; 727-connecting member; 728-transmission shaft;

[0032] 8-fixing mechanism; 81-fixing block; 811-threaded hole; 82-fixing angle plate; 821-connecting hole. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0034] A powder spraying device for an unmanned aerial vehicle comprises an unmanned aerial vehicle body 1, a base 2, a mounting mechanism 3, a medicine supply mechanism 4, a conveying mechanism 5, a powder spraying mechanism 6, and a swinging mechanism 7. The base 2 is fixedly arranged between the landing gears of the unmanned aerial vehicle body 1 and is fixedly connected to the landing gears; the mounting mechanism 3 is arranged on the top surface of the base 2; the medicine supply mechanism 4 is arranged on the mounting mechanism 3; the conveying mechanism 5 is connected to the bottom of the medicine supply mechanism 4; the swinging mechanism 7 is arranged on the base 2 and is located below the mounting mechanism 3; and the powder spraying mechanism 6 is connected to the conveying mechanism 5 and the swinging mechanism 7 respectively. The conveying mechanism 5 delivers the powder in the medicine supply mechanism 4 into the powder spraying mechanism 6, and then sprays it from the powder spraying mechanism 6. At the same time, the swinging mechanism 7 drives the powder spraying mechanism 6 to swing on the horizontal plane, thereby improving the uniformity of the powder spraying.

[0035] The mounting mechanism 3 includes a support column 31 and a mounting plate 32; the support column 31 is vertically arranged and distributed in a rectangular interval, and its bottom end is fixedly connected to the base 2; the mounting plate 32 is horizontally arranged on the top surface of the support column 31. The mounting mechanism 3 stably places the drug supply mechanism 4 in a specific position through the cooperation of the support column 31 and the mounting plate 32, providing a stable infrastructure for a series of subsequent operations such as drug supply, transportation and powder spraying. At the same time, its structural design helps to maintain the stability of the entire powder spraying device during the flight of the drone, ensuring that each component can still work normally in a complex operating environment.

[0036] The medicine supply mechanism 4 includes a medicine box 41; the medicine box 41 is vertically arranged on the top surface of the mounting plate 32, and a medicine adding port 411 is arranged on the upper part of the side wall thereof, and a discharge port 412 is arranged in the middle of the bottom surface of the medicine box 41. The medicine powder is added to the medicine box 41 from the medicine adding port 411, and then enters the conveying mechanism 5 from the discharge port 412. A detachable cover is arranged on the medicine adding port 411 to prevent the medicine powder from leaking due to bumps and other reasons during the flight of the drone, and is convenient to open when it is necessary to add medicine powder.

[0037] In a further embodiment, the medicine box 41 is a rectangular or cube structure, so that the horizontal flow angle of the medicine powder in the medicine box 41 is 90°, thereby reducing the resistance in the flow direction of the medicine powder, preventing the formation of bridges, making the medicine powder flow more smoothly in the box, improving the fluidity of the medicine powder, and ensuring that the medicine powder can flow out from the discharge port 412 continuously and stably.

[0038] The conveying mechanism 5 includes a connecting box 51, a material distribution pipe 52, a sleeve 53, a rotating rod 54, a first spiral blade 55, a second spiral blade 56, a conveying motor 57, and a conveying pipe 58; the connecting box 51 is vertically arranged, hollow inside, and open on the top surface, and the top surface of the connecting box 51 is fixedly connected to the bottom of the medicine box 41; the material distribution pipe 52 is a vertically arranged inverted "Y"-shaped structure, and its top surface is connected to the discharge port 412 of the medicine box 41, and the material distribution pipe 52 divides the medicine powder in the medicine box 41 into two paths; the sleeve 53 is horizontally arranged in the connecting box 51, and its two ends are fixedly connected to the side walls of the connecting box 51, and the left and right sides of the top surface of the sleeve 53 correspond to the bottom surface of the material distribution pipe 52. Feed inlets connected to the material distribution pipe 52 are opened, and the left and right sides of the bottom surface The two feeding ports are respectively provided, and the two-way powder enters the two feeding ports of the sleeve 53 respectively; the rotating rod 54 is horizontally arranged in the sleeve 53, and its two ends are rotatably connected to the inner wall of the connecting box 51 through bearings, and the right end of the rotating rod 54 extends to the right side wall of the connecting box 51; the first spiral blade 55 and the second spiral blade 56 are respectively arranged on the rotating rod 54 at intervals on the left and right, and the first spiral blade 55 and the second spiral blade 56 have opposite rotation directions, so that the two-way powder is transported in opposite directions and sent out from the two feeding ports of the sleeve 53 respectively; the conveying motor 57 is arranged on the right side wall of the connecting box 51 and is transmission-connected to the right end of the rotating rod 54; the conveying pipe 58 is vertically arranged, and its top end is respectively connected to the feeding port of the bottom surface of the sleeve 53. The powder enters the upper end of the distribution pipe 52 from the discharge port 412 of the medicine box 41, and is divided into two ways through the distribution pipe 52, respectively enters the two feeding ports of the sleeve 53, and then falls into the first spiral blade 55 and the second spiral blade 56 on the rotating rod 54 respectively. Since the first spiral blade 55 and the second spiral blade 56 rotate in opposite directions, when the rotating rod 54 rotates, the first spiral blade 55 and the second spiral blade 56 respectively convey the powder in opposite directions, so that the powder is respectively delivered from the two discharge ports of the sleeve 53 and enters the powder spraying mechanism 6 through the discharge pipe. The rotation speed of the rotating rod 54 is adjusted by controlling the rotation speed of the conveying motor 57, and then the discharge speed of the powder is adjusted to achieve quantitative discharge of the powder. The operator can flexibly adjust the spraying amount of the powder according to the density of crops in different operating areas, thereby improving the accuracy and adaptability of the powder spraying operation. For example, in areas with dense crops, the motor speed can be appropriately increased to increase the discharge amount of the powder; in areas with sparse crops, the motor speed can be reduced to reduce the amount of powder used.

[0039] There are two powder spraying mechanisms 6, including a barrel 61 and a powder spraying tube 62; the barrel 61 is vertically arranged, and an opening is provided on its top surface. The top surfaces of the barrels 61 of the two powder spraying mechanisms 6 are respectively connected to the conveying pipe 58; the top of the powder spraying tube 62 is connected to the bottom surface of the barrel 61. After the powder enters the barrels 61 of the two powder spraying mechanisms 6, it is sprayed and falls from the powder spraying tube 62 to realize powder spraying; the two powder spraying mechanisms 6 can realize spraying in a wider range and improve work efficiency.

[0040] In order to ensure that the powder can be sprayed smoothly, the lower end of the powder spraying pipe 62 is bent obliquely outward.

[0041] The swing mechanism 7 includes a swing assembly 72 and a double-axis motor 71; two swing assemblies 72 are provided corresponding to the powder spraying mechanism 6, the double-axis motor 71 is fixedly connected to the base 2 and is located between the two swing assemblies 72, and the two output shafts of the double-axis motor 71 are respectively oriented to the left and right directions and are transmission-connected to the swing assemblies 72. The two swing assemblies 72 respectively drive the two swings on the horizontal plane to improve the uniformity of powder spraying.

[0042] The swing assembly 72 includes a fixing member 721, a swing shaft 722, a connecting shaft 723, a swing member 724, a connecting rod 725, a ring member 726, a connecting member 727, and a transmission shaft 728; the fixing member 721 is horizontally arranged and is respectively fixedly sleeved on the middle part of the outer wall of the barrel 61; the swing shaft 722 is vertically arranged, the bottom end of which is rotatably connected to the base 2, and the top end passes upward through the side opposite to the fixing member 721 and is fixedly connected to the fixing member 721; the connecting shaft 723 is horizontally arranged front and back and connected to the lower part of the swing shaft 722; the swing member 724 is a horizontally arranged U-shaped structure, and the swing member 7 The two arms of 24 are rotatably connected to the two ends of the connecting shaft 723; the connecting rod 725 is horizontally arranged on the left and right sides opposite to the two swinging members 724; the annular member 726 is vertically arranged; the connecting member 727 is vertically fixed in the annular member 726, and the middle part thereof is inclined and protruded toward the direction of the dual-axis motor 71, and a connecting block is provided on the upper part of the connecting member 727, and a bearing is provided in the connecting block, and the bearing in the connecting block is rotatably connected to the connecting rod 725; the transmission shaft 728 is horizontal, and its left end is fixedly connected to the middle part of the connecting member 727, and the other end is respectively connected to the output shaft of the dual-axis motor 71 through a coupling. After the dual-axis motor 71 is started, the two output shafts respectively drive the transmission shaft 728 to rotate, the transmission shaft 728 drives the annular member 726 and the connecting member 727 to rotate, and the connecting member 727 drives the swinging member 724 to swing on the connecting shaft 723, so that the swinging shaft 722 swings back and forth on the horizontal plane, and the fixing member 721 drives the barrel 61 and the powder spraying pipe 62 to swing, thereby improving the uniformity of powder spraying.

[0043] It also includes a fixing mechanism 8; the fixing mechanism 8 includes a fixing block 81 and a fixing angle plate 82; the fixing block 81 is vertically arranged on the left and right sides of each side of the connection box 51, and a threaded hole 811 is provided on the fixing block 81; the fixing angle plate 82 is vertically arranged on the top surface of the mounting plate 32 and is arranged corresponding to the four corners of the connection box 51, and the fixing angle plate 82 is provided with a connecting hole 821 corresponding to the threaded hole 811 of the fixing block 81. When fixing is required, the bolt is passed through the connecting hole 821 of the fixing angle plate 82 and screwed into the threaded hole 811 on the fixing block 81, so that the drug supply mechanism 4 and the conveying mechanism 5 can be stably connected with the mounting mechanism 3 to ensure stability during operation.

[0044] The working mode of the present invention is:

[0045] Before starting work, the operator uses bolts to fix the medicine supply mechanism 4 and the conveying mechanism 5 to the installation mechanism 3 through the fixing mechanism 8. Then, the cover of the medicine adding port 411 of the medicine box 41 is opened, and the medicine powder is added to the medicine box 41, and the cover is closed after the addition. The medicine powder maintains good fluidity due to the structural characteristics of the medicine box 41 and flows out from the discharge port 412 of the medicine box 41.

[0046] The outflowing powder enters the distribution pipe 52, is divided into two paths, and then enters the sleeve 53. At this time, the conveying motor 57 is started, driving the rotating rod 54 to rotate, and the first spiral blade 55 and the second spiral blade 56 on the rotating rod 54 rotate in opposite directions, respectively, conveying the two paths of powder in opposite directions, and the powder is sent out from the discharge port of the sleeve 53.

[0047] The delivered powder enters the barrel 61 of the powder spraying mechanism 6 through the conveying pipe 58, and then is sprayed and falls from the powder spraying pipe 62. At the same time, the double-shaft motor 71 is started, and its output shaft drives the transmission shaft 728 to rotate, the transmission shaft 728 drives the connecting member 727 to rotate, and the connecting member 727 drives the swinging member 724 to swing on the connecting shaft 723. The swinging of the swinging member 724 causes the swinging shaft 722 to swing back and forth on the horizontal plane, and the swinging shaft 722 drives the fixing member 721 to swing, thereby causing the barrel 61 and the powder spraying pipe 62 to swing on the horizontal plane to ensure uniform spraying of the powder.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A UAV powder spraying device, characterized in that: It includes an unmanned aerial vehicle body, a base, a mounting mechanism, a medicine supply mechanism, a conveying mechanism, a powder spraying mechanism, and a swinging mechanism. The base is fixedly arranged between the landing gear of the unmanned aerial vehicle body and fixedly connected to the landing gear; the mounting mechanism is arranged on the top surface of the base; the medicine supply mechanism is arranged on the mounting mechanism; the conveying mechanism is connected to the bottom of the medicine supply mechanism; the swinging mechanism is arranged on the base and located below the mounting mechanism; the powder spraying mechanism is respectively connected to the conveying mechanism and the swinging mechanism.

2. The unmanned aerial vehicle powder spraying device according to claim 1, characterized in that: The installation mechanism comprises a support column and a mounting plate; the support column is vertically arranged and distributed in a rectangular interval, and the bottom end thereof is fixedly connected to the base; the mounting plate is horizontally arranged on the top surface of the support column.

3. The unmanned aerial vehicle powder spraying device according to claim 2, characterized in that: The medicine supply mechanism comprises a medicine box; the medicine box is vertically arranged on the top surface of the mounting plate, the upper part of the side wall of the medicine box is provided with a medicine adding port, and the middle part of the bottom surface is provided with a discharge port.

4. The unmanned aerial vehicle powder spraying device according to claim 3, characterized in that: The conveying mechanism comprises a connecting box, a material distribution pipe, a sleeve, a rotating rod, a first spiral blade, a second spiral blade, a conveying motor, and a conveying pipe; the connecting box is vertically arranged, hollow inside, with an open top surface, and the top surface of the connecting box is fixedly connected to the bottom of the medicine box; the material distribution pipe is a vertically arranged inverted "Y"-shaped structure, and its top surface is connected to the discharge port of the medicine box; the sleeve is horizontally arranged in the connecting box, and its two ends are fixedly connected to the side walls of the connecting box, and the left and right sides of the top surface of the sleeve correspond to the bottom surface of the material distribution pipe, and the left and right sides of the bottom surface are respectively provided with a feed port connected to the material distribution pipe; the rotating rod is horizontally arranged in the sleeve, and its two ends are rotatably connected to the inner side wall of the connecting box through bearings, and the right end of the rotating rod extends to the right side wall of the connecting box; the first spiral blade and the second spiral blade are respectively arranged on the rotating rod at intervals on the left and right, and the first spiral blade and the second spiral blade have opposite rotation directions; the conveying motor is arranged on the right side wall of the connecting box, and is transmission-connected to the right end of the rotating rod; the conveying pipe is vertically arranged, and its top end is respectively connected to the discharge port of the bottom surface of the sleeve.

5. The unmanned aerial vehicle powder spraying device according to claim 4, characterized in that: There are two powder spraying mechanisms, including a barrel and a powder spraying pipe; the barrel is vertically arranged, and its top surface is provided with an opening, and the top surfaces of the barrels of the two powder spraying mechanisms are respectively connected to the conveying pipes; the top end of the powder spraying pipe is connected to the bottom surface of the barrel.

6. The unmanned aerial vehicle powder spraying device according to claim 5, characterized in that: The swing mechanism includes a swing component and a dual-axis motor; two swing components are provided corresponding to the powder spraying mechanism, the dual-axis motor is fixedly connected to the base and is located between the two swing components, and the two output shafts of the dual-axis motor are respectively facing left and right directions and are transmission-connected to the swing component.

7. The unmanned aerial vehicle powder spraying device according to claim 6, characterized in that: The swing assembly includes a fixed part, a swing shaft, a connecting shaft, a swing part, a connecting rod, a ring part, a connecting part, and a transmission shaft; the fixed part is horizontally arranged and fixedly sleeved on the middle part of the outer side wall of the barrel; the swing shaft is vertically arranged, and its bottom end is rotatably connected to the base, and the top end passes upward through the side opposite to the fixed part and is fixedly connected to the fixed part; the connecting shaft is horizontally arranged front and back and connected to the lower part of the swing shaft; the swing part is a horizontally arranged U-shaped structure, and the two arms of the swing part are rotatably connected to the two ends of the connecting shaft; the connecting rod is horizontally arranged left and right and connected to the side opposite to the two swing parts; the ring part is vertically arranged; the connecting part is vertically fixed in the ring part, the middle part of which protrudes toward the direction of the dual-axis motor, and the upper part of the connecting part is rotatably connected to the connecting rod; the transmission shaft is horizontal, the left end of which is fixedly connected to the middle of the connecting part, and the other end is respectively connected to the output shaft of the dual-axis motor for transmission.

8. The unmanned aerial vehicle powder spraying device according to claim 4, characterized in that: It also includes a fixing mechanism; the fixing mechanism includes a fixing block and a fixing angle plate; the fixing block is vertically arranged on the left and right sides of each side of the connection box, and a threaded hole is opened on the fixing block; the fixing angle plate is vertically arranged on the top surface of the mounting plate and is arranged corresponding to the four corners of the connection box, and the fixing angle plate has connecting holes corresponding to the threaded holes of the fixing block.

9. The powder spraying method of the unmanned aerial vehicle powder spraying device according to any one of claims 1 to 8, characterized in that: When performing powder spraying operation, the conveying amount of the conveying mechanism is adjusted according to the powder spraying amount required in different working areas, and the powder is quantitatively fed into the powder spraying mechanism. At the same time, the swing mechanism drives the powder spraying mechanism to swing, and the powder spraying mechanism sprays powder on the working area.

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