Aircraft maintenance fuselage surface processing and painting device

Abstract

The utility model relates to an aircraft maintenance fuselage surface processing paint spraying device belongs to the aircraft maintenance technical field. Mainly include unmanned aerial vehicle main part, spray module, control system and auxiliary positioning system. Spray module realizes uniform coating spraying through pressure pump, shunt pipe and spray head, auxiliary positioning system utilizes camera and infrared distance measuring sensor real -time monitoring position information, and control system adjusts flight trajectory and spray state according to data. The device through the automation operation adapts complex curved surface and large -area fuselage spray demand, improves spray precision and efficiency significantly, reduces manual labor intensity, ensures that spray quality is stable controllable.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft maintenance technology, specifically relating to a fuselage surface processing and painting device for aircraft maintenance. Background Technology

[0002] In the field of aircraft maintenance, higher demands are placed on the precision, efficiency, and automation of fuselage surface painting equipment. However, existing painting operations largely rely on manual labor, which is time-consuming, labor-intensive, and inefficient, often resulting in uneven or missed areas. Existing equipment on the market still has many shortcomings in practical applications, failing to meet the demands of modern aviation maintenance for high-quality, intelligent painting. For example, its ability to flexibly paint complex curved surfaces or large fuselage structures is limited, and the problem of small single-pass painting areas urgently needs to be addressed. Therefore, developing a new type of fuselage surface painting equipment for aircraft maintenance has become an important direction for improving painting quality and efficiency. Utility Model Content

[0003] To overcome the problems of high labor intensity, low efficiency, and unstable coating quality caused by manual operation in existing aircraft maintenance surface painting, this invention provides a fuselage surface processing and painting device for aircraft maintenance. This device uses a drone-mounted painting module and auxiliary positioning system, combined with a control system, to achieve automated painting operations. It can adapt to the flexible painting needs of complex curved surfaces and large-area fuselage structures, while improving painting accuracy and efficiency and reducing manual intervention.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A fuselage surface processing and painting device for aircraft maintenance mainly includes a drone body, a painting module, a control system, and an auxiliary positioning system. The painting module is installed at the bottom of the drone body, the control system is located inside the drone body, and the auxiliary positioning system is also installed at the bottom of the drone body. The painting module and the auxiliary positioning system are electrically connected to the control system. The painting module includes a pressure pump, a distribution pipe, and a nozzle for painting; the auxiliary positioning system includes a camera and an infrared ranging sensor for acquiring images and distance information of the aircraft fuselage.

[0005] The spraying module includes a connecting frame, an arc-shaped support plate, a liquid storage tank, a paint delivery pipe, and a flow regulating valve. The connecting frame is fixedly installed at the bottom of the drone body, and the arc-shaped support plates are symmetrically installed at both ends of the connecting frame. The liquid storage tank is fixed to the arc-shaped support plate via a snap-fit ​​mechanism. A distribution pipe is installed at the bottom of the connecting frame, and multiple liquid outlets are opened along the length of the distribution pipe. Spray nozzles are installed at equal intervals at the liquid outlets of the distribution pipe. A pressure pump is fixedly installed on the connecting frame, with its inlet end connected to the liquid storage tank via a pipe, and its outlet end connected to the distribution pipe via the paint delivery pipe. The flow regulating valve is installed on the paint delivery pipe to regulate the paint flow rate. Both the pressure pump and the flow regulating valve are connected to the control system via wires, and their operating status is controlled by signals sent by the control system. The liquid storage tank of the spraying module is fixed to the arc-shaped support plate via a snap-fit ​​mechanism for easy and quick paint replacement and replenishment. The number of spray nozzles on the distribution pipe can be increased or decreased according to the actual spraying area to meet different spraying needs. The pressure pump controls the paint delivery speed by adjusting the output power, and the flow regulating valve further precisely controls the paint flow rate. The two work together to ensure the consistency of the spray coating thickness.

[0006] The control system includes a main control board, a wireless communication module, and a remote terminal. The main control board is fixedly installed inside the drone body. The wireless communication module is connected to the main control board via a circuit board. The remote terminal is a handheld device that establishes a connection with the main control board via wireless signals. The remote terminal can send commands to the main control board, and the main control board controls the operation of the spraying module and the auxiliary positioning system according to the commands.

[0007] The auxiliary positioning system includes a camera and an infrared ranging sensor. The camera is mounted on the bottom of the drone body via a bracket. Specifically, a connecting plate is located at the bottom of the drone body, and a connecting shaft is mounted on the bottom of the connecting plate. A bracket is rotatably mounted on the connecting shaft, and the camera is mounted on the bracket, allowing its angle to be adjusted. The infrared ranging sensor is fixedly mounted on the top of the drone body. Both the camera and the infrared ranging sensor are electrically connected to the main control board via wires, transmitting the collected position and distance information to the main control board in real time. The infrared ranging sensor monitors the distance changes between the drone and the surface of the drone in real time. Based on this information, the main control board dynamically adjusts the drone's flight altitude and the spraying angle of the spraying module, thereby adapting to the spraying needs of complex curved surfaces or large-area fuselage structures.

[0008] The drone's main power system drives its flight. The spraying module uses a pressure pump to deliver paint from the storage tank to the distribution pipe, and then sprays it evenly onto the drone's surface through the nozzles. During the spraying process, a camera in the auxiliary positioning system captures real-time images of the drone's surface, while an infrared rangefinder measures the distance between the drone and the surface. The main control board adjusts the drone's flight path and the spraying module's operating status based on the received images and distance information to ensure uniform spraying and coverage.

[0009] The control system receives commands from the remote terminal via a wireless communication module. The main control board then controls the drone's flight path, the start and stop of the painting module, and the data acquisition frequency of the auxiliary positioning system based on these commands. The remote terminal can display the drone's flight status, painting progress, and data collected by the auxiliary positioning system in real time, allowing operators to monitor the overall painting operation.

[0010] The beneficial effects of this utility model are: This invention utilizes a drone equipped with a spraying module and an auxiliary positioning system, combined with a control system, to achieve automated spraying operations. This solves the problems of high labor intensity, low efficiency, and uneven spraying associated with manual painting in existing technologies. The design of the spraying module makes paint delivery and the spraying process more precise and controllable, while the auxiliary positioning system ensures stable flight and accurate positioning of the drone in complex environments, thereby improving spraying quality and efficiency. Attached Figure Description

[0011] Figure 1 This is an isometric schematic diagram of the present invention.

[0012] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0013] Figure 3 This is a schematic diagram of the structure of this utility model viewed from below.

[0014] Figure 4 This is a front view structural diagram of the present invention.

[0015] Figure 5 This is a partial cross-sectional view of the present invention.

[0016] In the attached diagram, the following are the reference numerals: 1. UAV body; 2. Spraying module; 3. Control system; 4. Auxiliary positioning system; 5. Liquid storage tank; 6. Diverter pipe; 7. Spray nozzle; 8. Pressure pump; 9. Paint delivery pipe; 10. Flow regulating valve; 11. Main control board; 12. Wireless communication module; 13. Camera; 14. Infrared ranging sensor. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a fuselage surface painting device for aircraft maintenance. The device mainly includes a drone body 1, a painting module 2, a control system 3, and an auxiliary positioning system 4. The drone body 1 serves as the core support platform of the entire device, and is fixedly connected to the painting module 2 via a connecting frame at its bottom. The painting module 2 includes an arc-shaped support plate, a liquid storage tank 5, a distribution pipe 6, a nozzle 7, a pressure pump 8, a paint delivery pipe 9, and a flow regulating valve 10. The arc-shaped support plate is symmetrically installed at both ends of the connecting frame. The liquid storage tank 5 is fixed to the arc-shaped support plate by a snap-fit ​​mechanism, facilitating quick disassembly and paint replacement. The distribution pipe 6 is installed at the bottom of the connecting frame and has multiple liquid outlets along its length. Each outlet is equipped with a nozzle 7, and the number and spacing of the nozzles 7 can be adjusted according to actual painting requirements. The pressure pump 8 is fixedly installed on the connecting frame. Its inlet end is connected to the storage tank 5 through a pipe, and its outlet end is connected to the diversion pipe 6 through the paint delivery pipe 9. A flow regulating valve 10 is installed on the paint delivery pipe 9 to control the paint flow rate.

[0019] like Figure 4 , Figure 5 As shown, the control system 3 is located inside the UAV body 1 and includes a main control board 11, a wireless communication module 12, and a remote terminal. The main control board 11 is connected to the wireless communication module 12 via a circuit board, and the wireless communication module 12 establishes a connection with the remote terminal via wireless signals. The remote terminal is a handheld device through which operators can send commands to the main control board 11. The main control board 11 controls the operating status of the pressure pump 8 and the flow regulating valve 10 according to the received commands, and further coordinates the working process of the spraying module 2 and the auxiliary positioning system 4. The main control board 11 is electrically connected to the pressure pump 8 and the flow regulating valve 10 via wires to ensure the stability and real-time performance of signal transmission.

[0020] like Figure 3 , Figure 4 , Figure 5 As shown, the auxiliary positioning system 4 includes a camera 13 and an infrared ranging sensor 14. The camera 13 is mounted on the bottom of the drone body 1 via a bracket. Specifically, a connecting plate is provided at the bottom of the drone body 1, and a connecting shaft is mounted at the bottom of the connecting plate. A bracket is rotatably mounted on the connecting shaft. The camera 13 is fixed to the bracket, and the angle of the bracket can be adjusted to capture images of different areas. The infrared ranging sensor 14 is fixedly mounted on the top of the drone body 1 and is electrically connected to the main control board 11 via a wire, transmitting the collected distance information to the main control board 11. The camera 13 and the infrared ranging sensor 14 work together to transmit images of the drone's surface and distance information to the main control board 11 in real time, providing data support for the main control board 11 to adjust the flight trajectory of the drone body 1 and the working status of the painting module 2.

[0021] In actual spraying operations, the power system of the UAV body 1 drives it to fly near the fuselage surface, and the spraying module 2 begins to work. After the pressure pump 8 starts, the paint in the storage tank 5 is transported to the distribution pipe 6 through the paint delivery pipe 9, and then evenly sprayed onto the fuselage surface through the nozzle 7. During the spraying process, the camera 13 in the auxiliary positioning system 4 captures images of the fuselage surface in real time and transmits the image information to the main control board 11. The infrared ranging sensor 14 measures the distance between the UAV body 1 and the fuselage surface in real time and transmits the distance information to the main control board 11. The main control board 11 dynamically adjusts the flight altitude of the UAV body 1 and the spraying angle of the spraying module 2 according to the received image and distance information to adapt to the spraying needs of complex curved surfaces or large-area fuselage structures. At the same time, the main control board 11 controls the start and stop of the spraying module 2 and the operating status of the pressure pump 8 and the flow regulating valve 10 according to the instructions sent by the remote terminal to ensure the consistency of the spray thickness and the uniformity of the coverage. The storage tank 5 is fixed to the arc-shaped support plate by a snap-fit ​​method, which facilitates quick replacement and replenishment of paint. The number of nozzles 7 on the diversion pipe 6 can be increased or decreased according to the actual spraying area to meet different spraying needs. The pressure pump 8 controls the paint delivery speed by adjusting the output power, and the flow regulating valve 10 further precisely controls the paint flow. The two work together to ensure the consistency of the spraying thickness. After receiving the instructions from the remote terminal, the wireless communication module 12 controls the flight path of the UAV body 1, the start and stop of the spraying module 2, and the data acquisition frequency of the auxiliary positioning system 4 according to the instructions. The remote terminal can display the flight status of the UAV body 1, the spraying progress, and the data collected by the auxiliary positioning system 4 in real time, so that the operator can grasp the overall situation of the spraying operation. After the camera 13 is adjusted by the bracket, it can capture images of different areas of the fuselage surface. The infrared ranging sensor 14 monitors the distance changes between the UAV body 1 and the fuselage surface in real time. The main control board 11 dynamically adjusts the flight altitude of the UAV body 1 and the spraying angle of the spraying module 2 according to this information. The power system of the UAV body 1 achieves precise flight under the control of the main control board 11, and the spraying module 2 completes the uniform spraying of paint with the cooperation of the pressure pump 8 and the flow regulating valve 10. The entire device, consisting of a drone body 1 carrying a spraying module 2 and an auxiliary positioning system 4, combined with a control system 3, achieves automated spraying operations, solving the problems of high labor intensity, low efficiency, and uneven spraying in existing manual painting techniques. The design of the spraying module 2 makes paint delivery and the spraying process more precise and controllable, while the auxiliary positioning system 4 ensures stable flight and accurate positioning of the drone body 1 in complex environments, thereby improving spraying quality and efficiency.

[0022] Work process: I. Preliminary Preparations The operator sends a command to the main control board 11 via a remote terminal to start the entire painting unit. At this time, the main control board 11 begins system initialization, performing self-checks on each module. Simultaneously, the operator adjusts the number of nozzles 7 on the distribution pipe 6 according to the actual painting area of ​​the aircraft fuselage to meet different work requirements. The liquid storage tank 5 is securely fixed to the arc-shaped support plate via a snap-fit ​​mechanism. The operator pours the prepared paint into the liquid storage tank 5, preparing for the painting operation.

[0023] II. Takeoff and Positioning The drone body 1, carrying the painting module 2, control system 3, and auxiliary positioning system 4, takes off and flies towards the aircraft fuselage to be painted. During flight, the auxiliary positioning system 4 plays a crucial role. The camera 13, with its adjustable angle via a bracket, captures real-time images of the aircraft fuselage surface, obtaining image information and transmitting it to the main control board 11. An infrared ranging sensor 14, mounted on the top of the drone body 1, measures the distance between the drone and the aircraft fuselage in real time, also sending the data to the main control board 11. The main control board 11 analyzes and processes the data from the camera 13 and the infrared ranging sensor 14, accurately determining the drone's position and attitude to ensure it accurately reaches the area to be painted.

[0024] III. Spray Painting Operation Once the drone reaches the designated painting location, the main control board 11 sends a work command to the painting module 2 based on the pre-set painting parameters from the remote terminal. The pressure pump 8 starts operating, drawing paint from the storage tank 5 through a pipe at its inlet and delivering it to the distribution pipe 6 through the paint delivery pipe 9 at its outlet. The flow regulating valve 10 precisely adjusts the paint flow rate according to the instructions from the main control board 11 to ensure uniformity and stability of the painting. The paint is sprayed from the equally spaced nozzles 7 through multiple outlets on the distribution pipe 6, painting the aircraft fuselage surface. During the painting process, the camera 13 continuously monitors the painting effect and provides real-time feedback to the main control board 11. If uneven painting or other problems are detected, the main control board 11 will promptly adjust the operating power of the pressure pump 8 and the opening of the flow regulating valve 10, or control the drone's flight path to perform a second painting of the affected area, ensuring painting quality.

[0025] IV. Completion of Operations and Return After completing the scheduled painting task, the remote terminal sends a stop command to the main control board 11. The main control board 11 controls the pressure pump 8 to stop working, closes the flow regulating valve 10, and stops the delivery and spraying of paint. Then, based on the information provided by the auxiliary positioning system 4, the main control board 11 plans the return route and controls the main body of the drone 1 to return safely. After returning, the operator cleans and maintains the painting equipment to prepare for the next operation.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A device for painting the surface of an aircraft fuselage during maintenance, characterized in that: The system includes a drone body (1), a painting module (2), a control system (3), and an auxiliary positioning system (4). The painting module (2) is installed at the bottom of the drone body (1), the control system (3) is located inside the drone body (1), and the auxiliary positioning system (4) is installed at the bottom of the drone body (1). The painting module (2) and the auxiliary positioning system (4) are electrically connected to the control system (3). The painting module (2) includes a pressure pump (8), a diverter pipe (6), and a nozzle (7) for painting. The auxiliary positioning system (4) includes a camera (13) for collecting images of the drone body and distance information, and an infrared ranging sensor (14).

2. The aircraft maintenance fuselage surface processing and painting device as described in claim 1, characterized in that: The spraying module (2) also includes a connecting frame, an arc-shaped support plate, a liquid storage tank (5), a paint delivery pipe (9), and a flow regulating valve (10). The connecting frame is fixedly installed at the bottom of the UAV body (1). The arc-shaped support plate is symmetrically installed at both ends of the connecting frame. The liquid storage tank (5) is installed on the arc-shaped support plate. The diversion pipe (6) is installed at the bottom of the connecting frame and has multiple liquid outlets along its length. The nozzles (7) are installed at equal intervals at the liquid outlets of the diversion pipe (6). The pressure pump (8) is fixedly installed on the connecting frame. Its inlet end is connected to the liquid storage tank (5) through a pipe, and its outlet end is connected to the diversion pipe (6) through the paint delivery pipe (9). The flow regulating valve (10) is installed on the paint delivery pipe (9). The pressure pump (8) and the flow regulating valve (10) are both electrically connected to the control system (3) through wires.

3. The aircraft maintenance fuselage surface processing and painting device as described in claim 1, characterized in that: The control system (3) includes a main control board (11), a wireless communication module (12) and a remote terminal. The main control board (11) is fixedly installed inside the main body (1) of the UAV. The wireless communication module (12) is connected to the main control board (11) through a circuit board. The remote terminal is a handheld device and establishes a connection with the main control board (11) through a wireless signal. The main control board (11) controls the working status of the spraying module (2) and the auxiliary positioning system (4) according to the instructions sent by the remote terminal.

4. The aircraft maintenance fuselage surface processing and painting device as described in claim 1, characterized in that: The drone body (1) is provided with a connecting plate at the bottom, and a connecting shaft is installed at the bottom of the connecting plate. A bracket is rotatably installed on the connecting shaft. The camera (13) is installed at the bottom of the drone body (1) through the bracket. The camera (13) is fixed on the bracket and its angle can be adjusted through the bracket. The infrared ranging sensor (14) is fixedly installed on the top of the drone body (1). The camera (13) and the infrared ranging sensor (14) are both electrically connected to the main control board (11) through wires.

5. The aircraft maintenance fuselage surface processing and painting device as described in claim 2, characterized in that: The liquid storage tank (5) is fixed to the arc-shaped support plate by snap-fit. The number of nozzles (7) on the diversion pipe (6) can be increased or decreased according to the actual spraying area.

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