Unmanned aerial vehicle spraying device

Abstract

A sprayer adjusting mechanism of the unmanned aerial vehicle spraying device comprises a control steering engine and a sprayer movable support, a sprayer is connected with the sprayer movable support, the sprayer movable support is connected with a spraying rod, the control steering engine comprises a first steering engine, a second steering engine and a third steering engine, the first steering engine and the second steering engine are installed at the tail end of the spraying rod, and the third steering engine is installed at the tail end of the spraying rod. The first steering engine controls the nozzle movable support to move through two pull ropes to enable the nozzle to rotate up and down, the second steering engine controls the nozzle movable support to move through two pull ropes to enable the nozzle to rotate left and right, and the third steering engine is installed at the head end of the spraying rod and used for controlling the nozzle movable support to move to enable the nozzle to rotate axially. The spraying head of the unmanned aerial vehicle spraying device can deflect by + / -45 degrees in four directions and axially rotate by 90 degrees, complex areas such as windowsills and eaves can be accurately covered, the limitation of a traditional flight track is broken through by dynamically adjusting the spraying sector direction, and the unmanned aerial vehicle obtains omnidirectional maneuvering freedom while the optimal spraying quality is kept.

Description

Technical Field

[0001] This utility model relates to the field of aerial work robots, and more specifically, to a drone painting device. Background Technology

[0002] With the development of construction technology, the height of existing buildings has also increased. However, for high-rise buildings that require painting, painting is extremely inconvenient. Traditional painting methods rely on manual labor, but manual painting of high-rise buildings is not only costly and inefficient, but also carries the risk of falls due to the large range of motion of workers during the process. To improve efficiency, reduce costs, and mitigate safety risks, aerial spraying equipment has been used to paint high-rise buildings. However, the limited capacity of the material bins on existing aerial spraying equipment necessitates multiple reloadings during the painting process, making operation cumbersome and reducing painting efficiency.

[0003] Existing drone painting equipment has a fixed spray boom that can only spray forward. During painting operations, it can only spray the front of the wall, making it difficult to cover complex structures such as corners and window sills. Furthermore, the unidirectional spraying capability creates blind spots. In contrast, some technicians have concentrated all components of the steering mechanism at the nozzle in drone rust removal and corrosion prevention devices. This causes stress to concentrate at the end of the spray boom near the nozzle, making it prone to bending and deformation. This results in gradual changes in the spraying angle, making it difficult to guarantee the painting effect, and requires improvement. Utility Model Content

[0004] One technical problem this application aims to solve is to overcome the deficiencies of the above-mentioned related technologies and provide a drone spraying device with a reasonable nozzle steering mechanism, a spray bar that is not easily deformed or bent, and a good consistency of nozzle effect.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows: a drone spraying device, including a spray bar, a nozzle, and a nozzle adjustment mechanism, wherein the nozzle is connected to the spray bar; the nozzle adjustment mechanism includes a control servo and a nozzle movable bracket, the nozzle is connected to the nozzle movable bracket, the nozzle movable bracket is connected to the spray bar, the control servo includes a first servo, a second servo, and a third servo, the first servo and the second servo are installed at the tail end of the spray bar, the first servo is connected to the nozzle movable bracket through two pull ropes to control the movement of the nozzle movable bracket to make the nozzle rotate up and down, the second servo is connected to the nozzle movable bracket through two pull ropes to control the movement of the nozzle movable bracket to make the nozzle rotate left and right, and the third servo is installed at the head end of the spray bar, the third servo is used to control the movement of the nozzle movable bracket to make the nozzle rotate axially.

[0006] Furthermore, the movable nozzle support includes a frame, a connecting ring, a connecting block, and a rotating ring; the frame is connected to the spray bar, the connecting ring is pivotally connected to the frame via a rotating pin, and two pull ropes controlled by the second servo motor are respectively connected to both ends of the connecting ring; the connecting block is pivotally connected to the connecting ring via a rotating pin, and two pull ropes controlled by the first servo motor are respectively connected to both ends of the connecting block; the connecting block is sleeved on the end of the connecting pipe near the nozzle, and the connecting pipe connects between the nozzle and the spray bar and is flexible; the rotating ring is pivotally connected to and sealed to the spray bar, the rotating ring is fixed to the connecting pipe, and the external teeth of the rotating ring are connected to the third servo motor via a transmission gear.

[0007] Furthermore, the nozzle is in a straight line shape, and the third servo motor controls the nozzle to rotate axially by 90°.

[0008] Furthermore, the pull rope passes through the frame.

[0009] Furthermore, the middle part of the spray bar is fixedly connected to one end of the diagonal tie rod via a connector, and the other end of the diagonal tie rod is connected to the drone arm via a connector.

[0010] Furthermore, the tail of the spray bar is detachably connected to a quick-release device, which is detachably connected to an airborne high-pressure pipe and connected to a drone.

[0011] Furthermore, the airborne high-pressure pipe is detachably connected to the left end of the solenoid valve, and the right end of the solenoid valve is detachably connected to the ground high-pressure pipe.

[0012] Furthermore, the solenoid valve is fixedly mounted on a mounting plate, which is fixedly connected to the UAV.

[0013] Compared with related technologies, this utility model has the following advantages: the first and second servo motors of the nozzle adjustment mechanism are installed at the tail end of the spray bar, which greatly reduces the load on the head end of the spray bar, making the spray bar less prone to deformation and bending, and resulting in good spraying consistency; the first and second servo motors, together with the third servo motor installed at the head end of the spray bar and the nozzle movable bracket, form a balance, and by connecting two diagonal tie rods fixed to the UAV arm in the middle of the spray bar, the spray bar is pulled, which can better prevent the spray bar from bending; the UAV spraying device is equipped with a nozzle that can deflect ±45° in four directions and rotate 90° axially, which can not only accurately cover complex facades such as window eaves, but also break through the limitations of traditional flight trajectory by dynamically adjusting the spraying fan direction, so that the UAV can achieve omnidirectional maneuverability while maintaining the best spraying quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2This is an enlarged structural diagram of the spray bar adjustment mechanism;

[0016] Figure 3 This is an enlarged structural diagram of the spray bar adjustment mechanism;

[0017] Figure 4 This is an enlarged structural diagram of the pull rope section;

[0018] Figure 5 This is an enlarged structural diagram of the solenoid valve.

[0019] Figure 6 This is an enlarged structural diagram of the mounting base.

[0020] Labels in the diagram: 1-Mounting plate, 2-Solenoid valve, 3-High-pressure pipe, 4-Quick release device, 5-Spray boom, 6-Stretch rod, 7-Spray boom adjustment mechanism, 8-Control box, 31-Airborne high-pressure pipe, 32-Ground high-pressure pipe, 71-First servo motor, 72-Second servo motor, 73-Third servo motor, 74-Nozzle movable bracket, 75-Pull rope, 76-Rotating gear, 77-Rotating pin, 78-Rotating ring, 79-Connecting ring, 80-Frame, 81-Connecting pipe, 82-Steering rod, 83-Connecting block, 84-Transmission gear, 85-Connector, 9-Nozzle. Detailed Implementation

[0021] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-6 As shown, this embodiment provides a drone painting device, including a spray boom 5, a nozzle 9, and a nozzle adjustment mechanism 7. The nozzle 9 is connected to the spray boom 5. The nozzle adjustment mechanism 7 includes a control servo and a nozzle movable bracket 74. The nozzle 9 is connected to the nozzle movable bracket 74, and the nozzle movable bracket 74 is connected to the spray boom 5. The control servo includes a first servo 71, a second servo 72, and a third servo 73. The first servo 71 and the second servo 72 are installed at the tail end of the spray boom 5. The first servo 71 is connected to the nozzle movable bracket 74 via two pull ropes 75 to control the movement of the nozzle movable bracket 74 to make the nozzle 9 rotate up and down. The second servo 72 is connected to the nozzle movable bracket 74 via two pull ropes 75 to control the movement of the nozzle movable bracket 74 to make the nozzle 9 rotate left and right. The third servo 73 is installed at the head end of the spray boom 5 and is used to control the movement of the nozzle movable bracket 74 to make the nozzle 9 rotate axially.

[0024] Preferred, such as Figure 2 and 3 As shown, the nozzle movable bracket 74 includes a frame 80, a connecting ring 79, a connecting block 83, and a rotating ring 78. The frame 80 is connected to the spray bar 5. The connecting ring 79 is pivotally connected to the frame 80 via a rotating pin 77. Two pull ropes 75 controlled by the second servo motor 72 are respectively connected to both ends of the connecting ring 79. The connecting block 83 is pivotally connected to the connecting ring 79 via a rotating pin 77. Two pull ropes 75 controlled by the first servo motor 71 are respectively connected to both ends of the connecting block 83. The connecting block 83 is sleeved on the end of the connecting pipe 81 near the nozzle 9. The connecting pipe 81 connects the nozzle 9 and the spray bar 5 and is flexible. The rotating ring 78 is pivotally connected to and sealed to the spray bar 5. The rotating ring 78 is fixed to the connecting pipe 81. The external teeth of the rotating ring 78 are connected to the third servo motor 73 via a transmission gear 84. Specifically, as shown... Figure 2 As shown, the nozzle 9 is in the shape of a straight line, and the third servo motor 73 controls the nozzle 9 to rotate axially by an angle of 90°.

[0025] Preferred, such as Figures 2-4 As shown, the pull rope 75 passes through the frame 80, which can create a tensioning and guiding effect on the pull rope 7; the other end of the pull rope 75 is connected to both ends of the rudder stick 82 of its control servo motor, which is used to adjust the left and right and up and down rotation of the nozzle 9. The left and right rotation angle is ±45° deflection, and the up and down rotation angle is also ±45° deflection.

[0026] Preferred, such as Figure 1 As shown, the middle part of the spray bar 5 is fixedly connected to one end of the two diagonal tie rods 6 via a connector 85, and the other end of the diagonal tie rod 6 is connected to the drone arm via a connector 85. The diagonal tie rod 6 can pull the spray bar 5.

[0027] Preferred, such as Figure 1 and Figure 6 As shown, the tail of the spray bar 5 is detachably connected to the quick-release device 4, and the quick-release device 4 is also detachably connected to the airborne high-pressure pipe 31. The quick-release device 4 is fixed to the mounting plate 1 of the UAV by the four corner hand-tightening screws 41.

[0028] Preferred, such as Figure 5 As shown, the airborne high-pressure pipe 31 is detachably connected to the left end of the solenoid valve 2, and the right end of the solenoid valve 2 is detachably connected to the ground high-pressure pipe 32. The solenoid valve 2 is located near the spray bar 5. When spraying is started, the solenoid valve 2 responds quickly, allowing the paint to be atomized in time, resulting in a uniform spraying effect. When spraying is stopped, the solenoid valve 2 responds quickly, allowing the paint to be shut off in time, preventing paint accumulation and dripping at the nozzle 9, thus avoiding clogging of the nozzle 9.

[0029] Preferably, the solenoid valve 2 is installed and fixed inside the frame structure on the mounting plate 1, and the mounting plate 1 is fixedly connected to the UAV.

[0030] The UAV control system sends commands to the control box 8, which is fixed to the quick-release device 4. The control box 8 is connected to the UAV's power supply circuit via a connector. The control box 8 is electrically connected to the solenoid valve 2, the first servo motor 71, the second servo motor 72, and the third servo motor 73 to control all actions of the UAV painting device. In actual use of this UAV painting device, the quick-release device 4 is quickly installed onto the UAV mounting plate 1 using the four corner screws 41. The solenoid valve 2 is quickly inserted into and fixed into the frame structure on the mounting plate 1. The airborne high-pressure pipe 31 is quickly connected to the quick-release device 4 and the solenoid valve 2. Then, the ground high-pressure pipe 32 is quickly connected to the solenoid valve 2, and the spray boom 5 is quickly connected to the quick-release device 4. The UAV takes off via an automatic flight path command, which includes control commands for the UAV painting device. When approaching the wall, the solenoid valve 2 is automatically switched on and off, effectively and evenly spraying the wall. If it is necessary to spray the window sill or corner of the wall, by adding a servo control command to the spraying device, the first servo 71 and the second servo 72 can be automatically controlled to deflect the direction of the spray head. By cooperating with the rotation of the third servo 73, multi-directional free movement spraying can be achieved, and there are no longer any limitations.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A drone painting device, comprising a spray boom, a nozzle, and a nozzle adjustment mechanism, wherein the nozzle is connected to the spray boom, characterized in that, The nozzle adjustment mechanism includes a control servo and a nozzle movable bracket. The nozzle is connected to the nozzle movable bracket, and the nozzle movable bracket is connected to the spray boom. The control servo includes a first servo, a second servo, and a third servo. The first and second servos are installed at the tail end of the spray boom. The first servo is connected to the nozzle movable bracket via two pull ropes to control the movement of the nozzle movable bracket, causing the nozzle to rotate up and down. The second servo is connected to the nozzle movable bracket via two pull ropes to control the movement of the nozzle movable bracket, causing the nozzle to rotate left and right. The third servo is installed at the head end of the spray boom and is used to control the movement of the nozzle movable bracket, causing the nozzle to rotate axially.

2. The UAV painting device according to claim 1, characterized in that, The nozzle movable support includes a frame, a connecting ring, a connecting block, and a rotating ring. The frame is connected to the spray bar, and the connecting ring is pivotally connected to the frame via a rotating pin. Two pull ropes controlled by the second servo motor are respectively connected to both ends of the connecting ring. The connecting block is pivotally connected to the connecting ring via a rotating pin, and two pull ropes controlled by the first servo motor are respectively connected to both ends of the connecting block. The connecting block is sleeved on the end of the connecting pipe near the nozzle, and the connecting pipe connects the nozzle and the spray bar and is flexible. The rotating ring is pivotally connected to and sealed to the spray bar, and the rotating ring is fixed to the connecting pipe. The external teeth of the rotating ring are connected to the third servo motor via a transmission gear.

3. The UAV painting device according to claim 2, characterized in that, The nozzle is in the shape of a straight line, and the third servo motor controls the nozzle to rotate axially by 90°.

4. The UAV painting device according to claim 2, characterized in that, The pull rope passes through the frame.

5. A drone painting apparatus according to any one of claims 1 to 4, characterized in that, The middle part of the spray bar is fixedly connected to one end of the two diagonal tie rods via a connector, and the other end of the diagonal tie rod is connected to the drone arm via a connector.

6. The drone painting device according to claim 5, characterized in that, The tail of the spray bar is detachably connected to a quick-release device, which is detachably connected to an airborne high-pressure pipe and connected to a drone.

7. The UAV painting device according to claim 6, characterized in that, The airborne high-pressure pipe is detachably connected to the left end of the solenoid valve, and the right end of the solenoid valve is detachably connected to the ground high-pressure pipe.

8. The UAV painting device according to claim 7, characterized in that, The solenoid valve is fixedly mounted on the mounting plate, which is fixedly connected to the UAV.

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