High-rise building outer wall coating spraying device and spraying method

Abstract

The invention discloses a high-rise building outer wall coating spraying device which comprises an unmanned aerial vehicle and a coating supply assembly. The coating supply assembly comprises a stirrer pot and a high-pressure plunger pump; the high-pressure plunger pump is located in the stirrer pot, the unmanned aerial vehicle is connected with an electrostatic spraying gun, and an output port of the high-pressure plunger pump is connected with the electrostatic spraying gun through a coating output hose. The coating feeding assembly further comprises a stirring frame, the stirring frame is arranged in the stirrer pot, the upper end face of the stirrer pot is connected with a stirring driving motor, and the output end of the stirring driving motor penetrates through the stirrer pot to be connected with the stirring frame. According to the high-rise building outer wall coating spraying device and method, the existing defects are overcome, and the outer wall coating spraying efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a spraying device and a spraying method for the exterior wall coatings of high-rise buildings. Background Art

[0002] The spraying of building exterior walls is a construction process for the decoration and protection of building exterior walls. It has good decorative effects: it can achieve rich and diverse colors, textures, and textures, meeting different architectural styles and design requirements, giving the building exterior wall a unique appearance and good visual effects. It has strong protection performance: the sprayed material can form a continuous and dense protective film on the wall surface, effectively blocking the erosion of external moisture, air, ultraviolet rays, etc. to the wall, improving the durability and anti-aging performance of the wall, and extending the service life of the building.

[0003] Currently, the spraying of building exterior walls mainly relies on manual operation carried by a hanging basket, which has problems such as low efficiency, high risk of working at heights, and uneven coverage of complex facades. Although there are attempts to spray with drones in the prior art, there are the following defects: the load capacity of the drone is limited, the amount of paint carried is small, and it needs to return frequently for replenishment; the atomization pressure of the paint is insufficient, resulting in poor adhesion of the coating; the feeding hose is prone to winding and knotting, affecting the flight stability of the drone.

[0004] Therefore, in view of the above problems, a spraying device and a spraying method for the exterior wall coatings of high-rise buildings are proposed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the existing defects and provide a spraying device and a spraying method for the exterior wall coatings of high-rise buildings, which improve the spraying efficiency of exterior wall coatings.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A spraying device for the exterior wall coatings of high-rise buildings, including a drone and a paint feeding component;

[0007] The paint feeding component includes a stirring pot and a high-pressure piston pump; the high-pressure piston pump is located inside the stirring pot, an electrostatic spraying gun is connected to the drone, and the output port of the high-pressure piston pump is connected to the electrostatic spraying gun through a paint output hose.

[0008] Preferably, the paint feeding component further includes a stirring frame, the stirring frame is arranged inside the stirring pot, the upper end face of the stirring pot is connected with a stirring drive motor, and the output end of the stirring drive motor penetrates through the stirring pot and is connected to the stirring frame.

[0009] Preferably, the paint feeding component further includes a fixed base, a turntable drive motor is connected inside the fixed base, and the output end of the turntable drive motor is connected to the lower end of the stirring pot.

[0010] Preferably, a reel is connected to both the upper and lower ends of the stirring pot.

[0011] Preferably, a laser rangefinder, a vision camera and an anemometer are provided on the drone.

[0012] Preferably, a tension sensor is provided between the outer wall of the stirrer pot and the coating output hose.

[0013] Preferably, an intelligent control system is further included, and the intelligent control system is respectively connected to control the drone and the coating feeding assembly.

[0014] A spraying method for a high-rise building exterior wall coating spraying device includes the following steps:

[0015] Step S1, extracting three-dimensional data of the building facade through the BIM model in the intelligent control system and dividing the spraying area;

[0016] Step S2, setting the coating pressure and atomized particle parameters of the electrostatic spraying gun in the intelligent control system according to the partition material;

[0017] Step S3, the drone flies along the planned path in the intelligent control system and sprays the building through the electrostatic spraying gun; the turntable drive motor is controlled by the tension sensor. When the drone flies, it will drive the coating output hose to move. If the tension sensor monitors that the tube is in a relaxed state, the stirrer pot will tighten the tube. When the drone flies upward and the hose is monitored to be tightened, the turntable drive motor will rotate to release the coating output hose of the hose;

[0018] Step S4, during the spraying process, the laser rangefinder and the vision camera detect the coating thickness in real time, and the intelligent control system dynamically adjusts the flight speed of the drone.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: For the high-rise building exterior wall coating spraying device and spraying method of the present invention, by setting up a drone, a coating feeding assembly and an intelligent control system, the purpose of automatic path planning, automatic obstacle avoidance and multi-aircraft collaborative operation of the drone is achieved. During the spraying process, the coating thickness is monitored in real time and the spraying speed of the coating is controlled by adjusting the pressure of the booster pump to achieve the purpose of changing the spraying effect;

[0020] The efficiency is improved. The drone can cover a large area quickly (especially for high-rise buildings), avoiding the time loss of hanging basket movement and manual climbing. The construction period can be theoretically shortened by more than 30%. Multi-aircraft collaborative operation can achieve 24-hour shift spraying (night lighting and positioning system are required). The safety is enhanced, the number of high-altitude operation personnel is reduced, and the falling risk is reduced (especially applicable to super high-rise or complex-shaped buildings). In the long run, the labor cost may be reduced (especially in areas with tight labor), and the hanging basket rental cost is reduced. Description of the Drawings

[0021] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the description. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0022] Figure 1 is an overall schematic diagram of the high-rise building exterior wall paint spraying device of the present invention;

[0023] Figure 2 is a detailed position diagram of the laser rangefinder and visual camera of the present invention;

[0024] Figure 3 is a detailed connection diagram of the electrostatic spray gun of the present invention;

[0025] Figure 4 is a detailed diagram of the paint feeding assembly of the present invention;

[0026] Figure 5 is a spraying principle diagram of the high-rise building exterior wall paint spraying device of the present invention.

[0027] In the figure: 1, unmanned aerial vehicle; 2, agitator pot; 3, high-pressure piston pump; 4, electrostatic spray gun; 5, paint output hose; 6, stirring frame; 7, stirring drive motor; 8, fixed base; 9, turntable drive motor; 10, reel; 11, laser rangefinder; 12, visual camera; 13, anemometer. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-5 , a high-rise building exterior wall paint spraying device, comprising an unmanned aerial vehicle 1 and a paint feeding assembly; the paint feeding assembly includes an agitator pot 2 and a high-pressure piston pump 3; the high-pressure piston pump 3 is located in the agitator pot 2, the unmanned aerial vehicle 1 is connected with an electrostatic spray gun 4, and the output port of the high-pressure piston pump 3 is connected with the electrostatic spray gun 4 through a paint output hose 5.

[0030] Specifically, the unmanned aerial vehicle 1 itself has an unmanned aerial vehicle flight control system to control the flight attitude and speed of the unmanned aerial vehicle; the electrostatic spray gun 4 has an adjustable nozzle (including an electrostatic atomization module), and the nozzle is connected to the paint feeding assembly on the ground through a paint output hose 5.

[0031] Specifically, the high-pressure piston pump 3 has an adjustable pressure range of 5 - 30 MPa and continuously supplies paint to the unmanned aerial vehicle through a hose.

[0032] Specifically, the paint feeding assembly further includes a stirring rack 6, which is arranged in the stirrer pot 2. The upper end face of the stirrer pot 2 is connected to a stirring drive motor 7, and the output end of the stirring drive motor 7 penetrates through the stirrer pot 2 and is connected to the stirring rack 6. The stirring rack 6 can prevent the paint from settling.

[0033] Specifically, the paint feeding assembly further includes a fixed base 8. A turntable drive motor 9 is connected inside the fixed base 8, and the output end of the turntable drive motor 9 is connected to the lower end of the stirrer pot 2. The turntable drive motor 9 is connected to an external motor through a conductive slip ring. A reel 10 is connected to both the upper and lower ends of the stirrer pot 2. A tension sensor is arranged between the outer wall of the stirrer pot 2 and the paint output hose 5. The paint output hose 5 is wound around the outer wall of the stirrer pot 2, and the upper and lower reels 10 limit the paint output hose 5.

[0034] Specifically, the turntable drive motor 9 is equipped with a processor, which can receive the flight coordinates of the drone 1, calculate the distance between the drone and the reel according to the coordinates, so as to automatically adjust the release length of the hose according to the flight height of the drone.

[0035] Specifically, the outer layer of the paint output hose 5 is wrapped with a Kevlar fiber anti-wear layer, and the inner layer is a polytetrafluoroethylene coating to reduce the flow resistance.

[0036] Specifically, the drone 1 flies along the planned path in the intelligent control system and sprays the building through the electrostatic spraying gun 4. The turntable drive motor 9 is controlled by the tension sensor. When the drone 1 flies, it will drive the paint output hose 5 to move. If the tension sensor monitors that the tube is in a relaxed state, the stirrer pot 2 will be rotated to tighten the tube. When the drone 1 flies upward and the hose is monitored to be tightened, the turntable drive motor 9 will rotate to release the paint output hose 5.

[0037] Specifically, a laser rangefinder 11, a vision camera 12, an anemometer 13 and a temperature sensor are arranged on the drone 1. The laser rangefinder 11 and the vision camera 12 can real-time feedback the spraying distance and coating thickness data.

[0038] Specifically, adjust the spraying pressure of the spray gun and the diameter of the ejected liquid according to the wind speed and temperature of the environment. When the environmental wind speed is high, the paint dispersion area is large, so the waste of sprayed paint is large and the spraying effect is reduced. The temperature will affect the viscosity of the paint, so the spraying effect is improved and the waste is reduced by changing the spraying pressure and the diameter of the atomized particles.

[0039] Specifically, the vision camera 12 can accurately spray the path and avoid obstacles. The vision camera 12 can revise the spraying pressure and speed by comparing the coating color differences in different areas to achieve the purpose of uniform spraying. Secondly, the temperature sensor can sense the ambient temperature, and the anemometer 13 senses the ambient wind speed. The data is input into the processing module, thereby dynamically adjusting the spraying pressure of the paint. Since different temperatures will affect the performance of the paint, the spraying effect consistency is achieved by adjusting the pressure.

[0040] Specifically, it also includes an intelligent control system, and the intelligent control system is respectively connected to control the drone 1 and the paint feeding component.

[0041] Specifically, the intelligent control system generates a spraying path based on the BIM (Building Information) model and combines the lidar ranging and three-dimensional scanning imaging system, and dynamically corrects the trajectory by combining the real-time positioning data of the drone; automatically matches the paint pressure and the atomization particle diameter according to the wall material (for example, 15 MPa / 150 μm for concrete walls and 8 MPa / 80 μm for metal curtain walls).

[0042] In another embodiment, a cluster cooperation algorithm can also be used: multiple drones share the spraying progress in real time through 5G communication and dynamically allocate tasks (such as drone A sprays the flat facade and drone B processes the special-shaped structure) to avoid repeated coverage.

[0043] Taking a 200-meter super high-rise building as an example:

[0044] Equipment parameters:

[0045] The load of the drone 1 is 15 kg, and the endurance time is 40 minutes;

[0046] The length of the paint output hose 5 is 300 meters, and the inner diameter is 8 mm;

[0047] The maximum pressure of the high-pressure piston pump is 25 MPa, and the flow rate is 5 L / min.

[0048] Operation process:

[0049] Pour the water-based fluorocarbon paint into the mixer pot 2 and start the mixing drive motor 7 to mix;

[0050] The drone 1 takes off to a position 1.5 meters away from the wall and turns on the electrostatic spraying (voltage -50 kV);

[0051] Spray while ascending along a spiral path, with a flight speed of 2 m / s, and the hose retracting and extending work synchronously;

[0052] After completing a single-layer spraying, it automatically returns to the base for charging and conducts the second spraying after an interval of 30 minutes.

[0053] Effect verification:

[0054] The spraying efficiency reaches 1,200 ㎡ / hour, which is 4 times higher than that of manual spraying;

[0055] The deviation of the coating thickness is ≤ ±0.1 mm, and the area of manual repair is reduced by 80%.

[0056] A spraying method for a high-rise building exterior wall coating spraying device includes the following steps:

[0057] Step S1, extracting three-dimensional data of the building exterior facade through the BIM model in the intelligent control system and dividing the spraying areas;

[0058] Step S2, setting the coating pressure and atomized particle parameters of the electrostatic spraying gun 4 in the intelligent control system according to the partition materials;

[0059] Step S3, the drone 1 flies along the planned path in the intelligent control system and sprays the building through the electrostatic spraying gun 4; the turntable drive motor 9 is controlled by the tension sensor. When the drone 1 flies, it will drive the coating output hose 5 to move. If the tension sensor monitors that the tube is in a relaxed state, the rotating shaft agitator pot 2 will tighten the tube. When the drone 1 flies upward and the hose is monitored to be tightened, the turntable drive motor 9 will rotate to release the coating output hose 5 of the hose;

[0060] Step S4, during the spraying process, the laser rangefinder 11 and the vision camera 12 detect the coating thickness in real time, and the intelligent control system dynamically adjusts the flight speed of the drone.

[0061] This high-rise building exterior wall coating spraying device and spraying method, by setting the drone 1, the coating feeding component and the intelligent control system, realizes the purposes of automatic path planning, automatic obstacle avoidance and multi-aircraft collaborative operation of the drone. During the spraying process, the coating thickness is monitored in real time and the spraying speed of the coating is controlled by adjusting the pressure of the booster pump to achieve the purpose of changing the spraying effect;

[0062] The efficiency is improved. The drone can cover a large area quickly (especially for high-rise buildings), avoiding the time loss of hanging basket movement and manual climbing. The construction period can be theoretically shortened by more than 30%. Multi-aircraft collaborative operation can achieve 24-hour shift spraying (night lighting and positioning system are required). The safety is enhanced, the number of high-altitude operators is reduced, and the falling risk is reduced (especially suitable for super high-rise or complex-shaped buildings). In the long run, the labor cost may be reduced (especially in areas with tight labor), and the hanging basket rental cost is reduced.

[0063] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spraying device for the exterior wall paint of high-rise buildings, characterized in that, It includes a drone (1) and a paint feeding component; The paint feeding component includes a stirrer pot (2) and a high-pressure piston pump (3); the high-pressure piston pump (3) is located inside the stirrer pot (2), an electrostatic spraying gun (4) is connected to the drone (1), and the output port of the high-pressure piston pump (3) is connected to the electrostatic spraying gun (4) through a paint output hose (5).

2. The high-rise building exterior wall paint spraying device according to claim 1, wherein, The paint feeding component further includes a stirring frame (6), the stirring frame (6) is arranged inside the stirrer pot (2), the upper end face of the stirrer pot (2) is connected to a stirring drive motor (7), and the output end of the stirring drive motor (7) penetrates through the stirrer pot (2) and is connected to the stirring frame (6).

3. The high-rise building exterior wall paint spraying device according to claim 1, characterized in that, The paint feeding component further includes a fixed base (8), a turntable drive motor (9) is connected inside the fixed base (8), and the output end of the turntable drive motor (9) is connected to the lower end of the stirrer pot (2).

4. The high-rise building exterior wall coating spraying device according to claim 1, characterized in that, A reel (10) is connected to both the upper and lower ends of the stirrer pot (2).

5. The high-rise building exterior wall paint spraying device according to claim 1, characterized in that, A laser rangefinder (11), a vision camera (12) and an anemometer (13) are arranged on the drone (1).

6. The high-rise building exterior wall paint spraying device according to claim 1, characterized in that, A tension sensor is arranged between the outer wall of the stirrer pot (2) and the paint output hose (5).

7. The high-rise building exterior wall paint spraying device according to claim 1, characterized in that, It further includes an intelligent control system, and the intelligent control system is respectively connected to control the drone (1) and the paint feeding component.

8. A spraying method of a spraying device for the exterior wall coating of high-rise buildings, characterized in that, It includes the following steps: Step S1, extracting three-dimensional data of the building facade through the BIM model in the intelligent control system and dividing the spraying areas; Step S2, setting the paint pressure and atomized particle parameters of the electrostatic spraying gun (4) in the intelligent control system according to the partition materials; Step S3, the drone (1) flies along the planned path in the intelligent control system and sprays the building through the electrostatic spraying gun (4); the turntable drive motor (9) is controlled by the tension sensor. When the drone (1) flies, it will drive the paint output hose (5) to move. If the tension sensor monitors that the tube is in a slack state, the stirrer pot (2) will be rotated to tighten the tube. When the drone (1) flies upward and the hose is monitored to be tightened, the turntable drive motor (9) will rotate to release the paint output hose (5); Step S4, during the spraying process, the laser rangefinder (11) and the vision camera (12) detect the coating thickness in real time, and the intelligent control system dynamically adjusts the flight speed of the drone.

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