A laser deicing device and method for an airport runway

Abstract

This invention provides a laser adhesive removal device and method for airport runways, belonging to the field of airport runway adhesive removal technology. It includes an intelligent vehicle and a laser cleaning device. The laser cleaning device includes laser galvanometers, with at least two galvanometers. Multiple laser galvanometers are connected to the bottom of the intelligent vehicle and arranged perpendicular to the vehicle's forward direction. By arranging multiple laser galvanometers perpendicular to the forward direction, the width of a single operation is extended to the full width of the intelligent vehicle. Compared to single-head cleaning equipment, the efficiency is increased several times. Furthermore, by using lasers for adhesive removal, the entire process requires no chemical solvents or corrosive reagents, fundamentally avoiding chemical residues, environmental pollution, and potential damage to the runway structure.

Description

Technical Field

[0001] This invention belongs to the technical field of airport runway adhesive removal, and relates to a laser adhesive removal device and method for airport runways. Background Technology

[0002] Airport runways are primarily constructed of concrete, and their grooved surface effectively improves tire grip and anti-skid performance. However, during takeoff and landing, the friction between the tires and the runway generates a large number of rubber particles. These particles adhere to the concrete surface and within the grooves, forming a rubber residue layer of varying thickness. Over time, this accumulation significantly reduces the runway's coefficient of friction, increasing the aircraft's landing distance. This is especially problematic in rainy or snowy weather, as it can easily lead to runway skidding or runway overrun accidents. According to civil aviation statistics, safety incidents caused by rubber residue account for the second highest proportion of airport operational risks, second only to runway foreign object intrusion.

[0003] Therefore, there is an urgent need for a laser adhesive removal device and method for airport runways to achieve efficient removal of runway rubber and markings. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a laser adhesive removal device for airport runways, comprising: an intelligent vehicle; A laser cleaning device includes laser galvanometers, the number of which is at least two. The laser galvanometers are connected to the bottom of the intelligent vehicle and arranged perpendicular to the direction of travel of the intelligent vehicle.

[0005] In the aforementioned laser adhesive removal device for airport runways, the laser cleaning device further includes an air knife nozzle, which is disposed at the bottom of the intelligent vehicle and positioned in front of the laser galvanometer along the forward direction.

[0006] The laser cleaning module also includes a vacuum suction pipe, which is located behind the laser galvanometer along the forward direction of the intelligent vehicle, and is used to collect vapors and dust generated during laser cleaning.

[0007] In the aforementioned laser adhesive removal device for airport runways, the laser cleaning module further includes a lifting mechanism. The laser galvanometer is mounted on the bottom of the intelligent vehicle via the lifting mechanism, which can be used to adjust the distance between the laser galvanometer and the ground.

[0008] In the aforementioned laser adhesive removal device for airport runways, the lifting mechanism further includes a laser rangefinder, which is used to measure the distance between the laser galvanometer and the ground.

[0009] In the aforementioned laser adhesive removal device for airport runways, the laser cleaning module further includes a temperature monitoring unit connected to the laser galvanometer for detecting the operating temperature of the laser galvanometer during cleaning.

[0010] The aforementioned laser adhesive removal device for airport runways also includes a CCD camera, which is mounted on the laser galvanometer and is used to identify and capture grayscale changes in the road surface and marking lines.

[0011] To address the aforementioned technical problems, a laser adhesive removal method for airport runways is also proposed, comprising: S1: The CCD camera identifies and captures the grayscale changes of the road surface and markings, and feeds them back to the control unit along with the distance between the ground measured by the laser rangefinder. S2: The control unit controls the lifting mechanism based on the measured distance, thereby adjusting the laser galvanometer to make its distance from the ground appropriate; S3: The control unit controls the switching on and off of the laser galvanometer and the driving speed of the intelligent vehicle based on the grayscale value. When the grayscale value is at the set value, the corresponding laser galvanometer switch is turned on; when the grayscale value is greater than the set value, the corresponding laser galvanometer switch is turned off. S4: The temperature monitoring unit monitors the operating temperature of the laser galvanometer 11 in real time and feeds the data back to the control unit. When the temperature exceeds the set safety threshold, the system will reduce the output power of the laser galvanometer 11 and the driving speed of the smart car. S5: A vacuum suction pipe is installed behind the laser galvanometer to adsorb dust and fumes generated during the laser cleaning process in real time.

[0012] In the above-mentioned laser adhesive removal method for airport runways, in step S2, the distance between the laser galvanometer and the ground is adjusted to be maintained at 5-50mm.

[0013] In the above-mentioned laser adhesive removal method for airport runways, in step S3, when the CCD camera detects a grayscale value between 30 and 180, the corresponding laser galvanometer control switch is turned on, and when the grayscale value is greater than 180, the laser galvanometer is turned off.

[0014] Compared with existing technologies, the advantages of this invention are as follows: By arranging multiple laser galvanometers perpendicular to the forward direction, the width of a single operation is extended to the full width of the intelligent vehicle, increasing efficiency several times compared to single-head cleaning equipment. Furthermore, the use of lasers for adhesive removal eliminates the need for any chemical solvents or corrosive reagents, fundamentally avoiding chemical residues, environmental pollution, and potential damage to the runway structure. By pre-removing suspended particles and volatile pollutants, the air knife system effectively prevents these impurities from being sputtered or adsorbed onto the surfaces of key optical components such as laser galvanometers and focusing lenses under high-temperature or high-energy laser conditions. Contamination of optical components not only reduces laser transmittance and affects beam quality but also... In addition, the amount of heat may cause damage due to local heat accumulation, shortening the service life of the equipment. The pre-cleaning function of the air knife provides an active protective barrier, significantly reducing the maintenance frequency and replacement cost of the optical system. The vacuum dust collection pipe removes residual dust in time, which not only improves the working environment of the operators and ensures the cleanliness of the surrounding equipment and facilities, but also prevents it from redepositing in the treated area and preventing the formation of new contaminated areas. The laser rangefinder is installed near the laser galvanometer assembly to monitor the ground height changes under the current travel path in real time and transmit the data to the lifting mechanism, which drives the laser galvanometer module to make synchronous up and down fine adjustments to ensure that the laser focus is always accurately focused on the surface of the rubber layer at the optimal working distance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the laser cleaning device of the present invention.

[0017] Figure 3 This is a flowchart of the method of the present invention.

[0018] In the picture: 1. Laser cleaning device; 11. Laser galvanometer; 12. Air knife nozzle; 13. Lifting mechanism. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0025] like Figures 1-3 As shown, a laser adhesive removal device for airport runways includes: an intelligent vehicle and a laser cleaning device 1.

[0026] The laser cleaning device 1 includes a laser galvanometer 11, and the number of laser galvanometers 11 is at least two. The laser galvanometers 11 are connected to the bottom of the intelligent vehicle and arranged perpendicular to the forward direction of the intelligent vehicle.

[0027] Specifically, multiple laser galvanometers 11 are arranged horizontally at the bottom of the intelligent vehicle. As the intelligent vehicle moves, it performs laser degumming on the track that the intelligent vehicle passes over, enabling efficient treatment of the entire track surface in a single pass, which greatly reduces the number of round trips and operation time.

[0028] In this embodiment, by arranging multiple laser galvanometers 11 perpendicular to the forward direction, the width of a single operation is extended to the full width of the intelligent vehicle. Compared with a single-head cleaning device, the efficiency is increased several times. Furthermore, by using lasers to remove adhesive, the entire adhesive removal process does not require the use of any chemical solvents or corrosive reagents, fundamentally avoiding chemical residues, environmental pollution, and potential damage to the runway structure.

[0029] like Figures 1-3 As shown, based on the above embodiments, the laser cleaning device 1 further includes an air knife nozzle 12, which is disposed at the bottom of the intelligent vehicle and is disposed in front of the laser galvanometer 11 along the forward direction.

[0030] Specifically, an air knife nozzle 12 is set in front of the laser galvanometer 11 to form a clean air curtain. Before the laser beam irradiates the runway surface, the air knife nozzle 12 can accurately spray compressed air to quickly blow away the floating dust, water vapor, fallen leaf debris, sand particles and other loose impurities attached to the runway surface, effectively removing obstacles that may interfere with the transmission and focusing of laser energy.

[0031] In this embodiment, by removing suspended particles and volatile pollutants in advance, the air knife system can also effectively prevent these impurities from being sputtered or adsorbed onto the surface of key optical components such as the laser galvanometer 11 and focusing lens in high-temperature or high-energy laser environments. Once optical components are contaminated, not only will the laser transmittance be reduced and the beam quality be affected, but damage may also be caused by local heat accumulation, shortening the service life of the equipment. The air knife's pre-cleaning function provides an active protective barrier for this purpose, significantly reducing the maintenance frequency and replacement cost of the optical system.

[0032] like Figures 1-3 As shown, based on the above embodiments, the laser cleaning module further includes a vacuum suction pipe, which is located behind the laser galvanometer 11 along the forward direction of the intelligent vehicle, and is used to collect vapors and dust generated during laser cleaning.

[0033] Specifically, a vacuum dust collection pipe is installed immediately behind the laser galvanometer 11 and adjacent to the working area. When the high-energy laser beam acts on the rubber layer on the surface of the runway, the rubber material is rapidly heated and vaporized or broken into micron-sized particles. At the same time, smoke, volatile organic compounds and fine dust are generated. The vacuum dust collection pipe can forcefully suck the above-mentioned vaporization products and suspended particles into the sealed pipe at the moment of generation, effectively blocking the diffusion path of pollutants.

[0034] In this embodiment, the vacuum dust extraction pipe removes residual dust in a timely manner, which not only improves the working environment of the operators and ensures the cleanliness of the surrounding equipment and facilities, but also prevents the dust from redepositing in the treated area and prevents the formation of new contaminated areas.

[0035] like Figures 1-3 As shown, based on the above embodiment, the laser cleaning module further includes a lifting mechanism 13. The laser galvanometer 11 is installed at the bottom of the intelligent vehicle through the lifting mechanism 13. The lifting mechanism 13 can be used to adjust the distance between the laser galvanometer 11 and the ground.

[0036] Specifically, in actual operation, the surface of airport or stadium runways often has unevenness such as local undulations, joint height differences, repair areas, or minor deformations caused by long-term use. If the distance between the laser galvanometer 11 and the ground is fixed, the laser energy density is easily reduced due to focal length deviation, resulting in problems such as incomplete glue removal, overheating of the substrate, or even cleaning failure.

[0037] In this embodiment, the laser galvanometer 11 is installed at the bottom of the intelligent vehicle via a lifting mechanism 13. When encountering local undulations, the lifting mechanism 13 can raise the laser galvanometer 11 to maintain the distance between it and the ground at the optimal working distance.

[0038] like Figures 1-3 As shown, based on the above embodiment, the lifting mechanism 13 also includes a laser rangefinder, which is used to measure the distance between the laser galvanometer 11 and the ground.

[0039] In this embodiment, the laser rangefinder is installed near the laser galvanometer 11 assembly to monitor the changes in ground height under the current travel path in real time, and transmits the data to the lifting mechanism 13 to drive the laser galvanometer 11 module to make synchronous up and down fine adjustments, so as to ensure that the laser focus is always accurately focused on the surface of the rubber layer at the optimal working distance.

[0040] like Figures 1-3 As shown, based on the above embodiment, the laser cleaning module 1 further includes a temperature monitoring unit, which is connected to the laser galvanometer 11 and is used to detect the working temperature of the laser galvanometer 11 during cleaning.

[0041] In this embodiment, the temperature monitoring unit can upload temperature data to the control unit in real time. Once the temperature of the laser galvanometer 11 is detected to be close to the preset safety threshold, the laser output power is automatically reduced or the local scanning task is temporarily interrupted to reduce the heat load and prevent the laser galvanometer 11 from being damaged by overheating, causing damage to the lens coating, motor loss of synchronization, optical distortion or even permanent failure. like Figures 1-3 As shown, based on the above embodiments, a CCD camera is also included. The CCD camera is mounted on the laser galvanometer 11 and is used to identify and capture the grayscale changes of the road surface and marking lines.

[0042] In this embodiment, a CCD camera is mounted on the laser galvanometer 11, which can identify the grayscale difference between the runway marking lines and the adhesive layer area in real time. The data is fed back to the control unit for processing, thereby adjusting the output power of the laser galvanometer 11 and the driving speed of the intelligent vehicle.

[0043] like Figures 1-3 As shown, the present invention also provides a laser adhesive removal method for airport runways, comprising: S1: The CCD camera identifies and captures the grayscale changes of the road surface and markings, and feeds them back to the control unit along with the distance between the ground measured by the laser rangefinder. S2: The control unit controls the lifting mechanism 13 according to the measured distance, thereby adjusting the laser galvanometer 11 to make its distance from the ground appropriate; S3: The control unit controls the switching on and off of the laser galvanometer 11 and the driving speed of the smart car based on the gray value. When the gray value is at the set value, the corresponding laser galvanometer 11 switch is turned on. When the gray value is greater than the set value, the corresponding laser galvanometer 11 switch is turned off. S4: The temperature monitoring unit monitors the operating temperature of the laser galvanometer 11 in real time and feeds the data back to the control unit. When the temperature exceeds the set safety threshold, the system will reduce the output power of the laser galvanometer 11 and the driving speed of the smart car. S5: A vacuum dust collection pipe is installed behind the laser galvanometer 11 to adsorb dust and fumes generated during the laser cleaning process in real time.

[0044] Specifically, in step S2, the distance between the laser galvanometer 11 and the ground is adjusted to be 5-50mm. If the distance is too small, the laser focus may be too concentrated, resulting in excessively high local energy density, which may cause excessive ablation of the material or expansion of the heat-affected zone. If the distance is too large, the laser beam will diverge significantly during propagation, resulting in blurred focus and decreased energy density, which in turn affects the cleaning accuracy and efficiency.

[0045] Specifically, in step S3, when the CCD camera detects a grayscale value between 30 and 180, the corresponding laser galvanometer 11 control switch is turned on. When the grayscale value is greater than 180, the laser galvanometer 11 is turned off. When the grayscale value of a certain area is detected to be between 30 and 180, the system determines that the area is a non-marking line area covered with an aged rubber layer. Such areas usually have moderate reflectivity and moderate grayscale due to rubber deposits, oil stains, or wear. At this time, the control system immediately triggers the laser galvanometer 11 control switch at the corresponding position, accurately turns on the laser output, and starts the adhesive removal and cleaning program. When the CCD detects a grayscale value exceeding 180, the system determines that the area is a high-reflectivity original runway marking line. Its surface is clean, highly reflective, and the grayscale is significantly higher than that of the rubber contamination area. In order to avoid laser burns or damage to these key markings, the control system will instantly turn off the laser galvanometer 11 of the corresponding channel to ensure that the beam does not generate any energy output when passing through the marking line area.

[0046] Specifically, in step S3, when the CCD camera detects a grayscale value close to 30, the power adjustment module automatically adjusts to 1000 W and the travel speed to 10000 mm / s. When the grayscale value is close to 180, the power adjustment module automatically adjusts to 600 W, the travel speed to 15000 mm / s, and the frequency to 500 kHz. When the grayscale value of the current working area is detected to be close to 30, the power adjustment module automatically increases the laser output power to 1000 W to ensure sufficient energy density for effective vaporization and peeling of stubborn adhesive layers. At the same time, to ensure sufficient energy action time and avoid incomplete cleaning due to excessive speed, the travel speed of the intelligent vehicle is synchronously adjusted to 10000 mm / s. When the CCD detects a grayscale value close to 180, the laser power is smoothly reduced to 600 W to reduce the risk of thermal impact and prevent overheating or micro-damage to the substrate or adjacent markings. Meanwhile, the travel speed is increased to 15000 mm / s to improve work efficiency.

Claims

1. A laser adhesive removal device for airport runways, characterized in that, include: Smart cars; A laser cleaning device includes laser galvanometers, the number of which is at least two. The laser galvanometers are connected to the bottom of the intelligent vehicle and arranged perpendicular to the direction of travel of the intelligent vehicle.

2. The laser adhesive removal device for airport runways as described in claim 1, characterized in that: The laser cleaning device also includes an air knife nozzle, which is located at the bottom of the intelligent vehicle and positioned in front of the laser galvanometer along the forward direction.

3. The laser adhesive removal device for airport runways as described in claim 1, characterized in that: The laser cleaning module also includes a vacuum suction pipe, which is located behind the laser galvanometer along the forward direction of the intelligent vehicle, and is used to collect vapors and dust generated during laser cleaning.

4. The laser adhesive removal device for airport runways as described in claim 1, characterized in that: The laser cleaning module also includes a lifting mechanism. The laser galvanometer is mounted on the bottom of the intelligent vehicle via the lifting mechanism, which can be used to adjust the distance between the laser galvanometer and the ground.

5. A laser adhesive removal device for airport runways as described in claim 4, characterized in that: The lifting mechanism also includes a laser rangefinder, which is used to measure the distance between the laser galvanometer and the ground.

6. The laser adhesive removal device for airport runways as described in claim 1, characterized in that: The laser cleaning module also includes a temperature monitoring unit, which is connected to the laser galvanometer and is used to detect the operating temperature of the laser galvanometer during cleaning.

7. The laser adhesive removal device for airport runways as described in claim 1, characterized in that: It also includes a CCD camera, which is mounted on the laser galvanometer and is used to identify and capture grayscale changes in the road surface and marking lines.

8. A laser adhesive removal method for airport runways according to any one of claims 1-7, characterized in that, include: S1: The CCD camera identifies and captures the grayscale changes of the road surface and markings, and feeds them back to the control unit along with the distance between the ground measured by the laser rangefinder. S2: The control unit controls the lifting mechanism based on the measured distance, thereby adjusting the laser galvanometer to make its distance from the ground appropriate; S3: The control unit controls the switching on and off of the laser galvanometer and the driving speed of the intelligent vehicle based on the grayscale value. When the grayscale value is at the set value, the corresponding laser galvanometer switch is turned on; when the grayscale value is greater than the set value, the corresponding laser galvanometer switch is turned off. S4: The temperature monitoring unit monitors the operating temperature of the laser galvanometer 11 in real time and feeds the data back to the control unit. When the temperature exceeds the set safety threshold, the system will reduce the output power of the laser galvanometer 11 and the driving speed of the smart car. S5: A vacuum suction pipe is installed behind the laser galvanometer to adsorb dust and fumes generated during the laser cleaning process in real time.

9. A laser adhesive removal method for airport runways as described in claim 8, characterized in that: In step S2, the distance between the laser galvanometer and the ground is adjusted to keep it between 5-50mm.

10. A laser adhesive removal method for airport runways as described in claim 8, characterized in that: In step S3, when the CCD camera detects a grayscale value between 30 and 180, the corresponding laser galvanometer control switch is turned on; when the grayscale value is greater than 180, the laser galvanometer is turned off.

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