A portable pulse laser rust layer thickness gauge with rust removal function

Abstract

The present application relates to the technical field of laser rust removal for bridge steel structure on-site construction, and particularly relates to a portable pulse laser rust layer thickness gauge with rust removal function. In the prior art, the rust powder on the surface of the metal panel needs to be cleaned frequently, which affects the rust removal efficiency. The technical scheme is as follows: a portable pulse laser rust layer thickness gauge with rust removal function comprises a handle, a mounting shell, a laser rust remover and a distance measuring module, etc. The handle is provided with the mounting shell. The handle is provided with a display screen. The mounting shell is provided with the laser rust remover. The laser rust remover is provided with the distance measuring module. The retractable cover after stretching covers the area between the mounting shell and the metal panel. The air flow is blown out to the rust removal area on the metal panel through the air outlet slot, so that the rust powder on the rust removal area floats towards the inner wall of the retractable cover and adheres to the inner wall of the retractable cover. In this way, the rust powder can be separated from the rust removal area of the metal panel, and the rust powder is prevented from adhering to the surface of the metal panel.

Description

Technical Field

[0001] This invention relates to the field of laser rust removal technology for on-site construction of bridge steel structures, and in particular to a convenient pulsed laser rust layer thickness gauge with rust removal function. Background Technology

[0002] In the field of on-site installation and construction of steel structure bridges, steel components are usually welded together after being transported from the factory to the bridge site. After the welded areas melt and solidify at high temperatures, they are exposed to oxygen and moisture in the air without any protection, making them prone to chemical reactions and corrosion. To ensure the durability of the connection points in steel structure bridges and improve corrosion resistance, rust removal must be performed on-site before painting the weld areas. Laser rust removal, also known as laser cleaning, works on the following physical principle: The laser beam is absorbed by the contamination layer on the metal panel surface. The high energy absorption of the contamination layer forms a rapidly expanding plasma (a highly ionized, unstable gas), which then generates a shock wave. This shock wave breaks the contaminants into fragments and removes them.

[0003] However, in existing laser rust removal processes, when a laser irradiates the rust layer on a metal panel, its high energy rapidly heats and evaporates the rust layer. This process causes the rust layer to decompose into tiny particles, including rust products such as iron oxide. These particles are separated under the laser's action, forming so-called rust powder. Some of this rust powder, after separating from the metal panel, falls directly downwards, detaching from the rust removal area. This portion of the rust powder floats in the air, polluting the working environment or being inhaled by rust removal personnel, affecting their health. Other rust powder does not fall directly off the metal panel but adheres to its surface. As the rust removal work progresses, more and more rust powder adheres to the metal panel surface, forming a new rust layer, or adhering to the surface of rust layers that have not yet been removed, interfering with the rust removal work. Therefore, frequent cleaning of the rust powder on the metal panel surface is required, affecting the rust removal efficiency. Summary of the Invention

[0004] To overcome the shortcomings of the problems mentioned in the background, the present invention provides a convenient pulsed laser rust layer thickness gauge with rust removal function.

[0005] The technical solution is as follows: A portable pulsed laser rust layer thickness gauge with rust removal function, comprising a handle, a mounting shell, a laser rust remover, and a ranging module; the handle is fitted with the mounting shell; the handle is fitted with a display screen; the mounting shell is fitted with the laser rust remover, which performs localized, targeted rust removal; the laser rust remover is fitted with a ranging module, which incorporates optical instruments, a ranging instrument, and a calibration instrument, calculating the thickness of the removed rust layer based on the round-trip phase difference of the pulsed laser, thereby achieving the measurement of the rust layer thickness; it also includes an electric push rod, a connecting block, and an extension... The device includes a retractable cover, air pumps, air hoses, an air outlet ring, and cameras. The mounting housing has a telescopic cover. The mounting housing is equipped with several electric push rods. Each electric push rod has a connecting block fixed to its telescopic section, and the connecting block is connected to the telescopic cover. The laser rust remover is fixedly connected to an air outlet ring. The handle is equipped with several symmetrically distributed air pumps. Each air pump is connected to an air hose, and all air hoses pass through the mounting housing and connect to the air outlet ring. The air outlet ring has air outlet slots. The laser rust remover is equipped with several cameras, and the cameras are connected to a display screen.

[0006] As an improvement to the above scheme, it also includes an extraction hood; the mounting shell has several symmetrically distributed discharge slots; the mounting shell is fixedly connected to several symmetrically distributed extraction hoods, and the extraction hoods are connected to the discharge slots on the corresponding sides; each extraction hood has an extraction port.

[0007] As an improvement to the above solution, a magnetic ring is also included; the telescopic cover is provided with several magnetic rings, and the magnetic rings are located in the groove of the telescopic cover.

[0008] As an improvement to the above solution, the discharge groove is set as an inclined groove, and an electromagnet is built into the discharge groove of the mounting shell.

[0009] As an improvement to the above solution, a circular ring is also included; the end of the telescopic cover away from the mounting shell is fixedly connected to the circular ring, and the circular ring is connected to the connecting block.

[0010] As an improvement to the above solution, the ring is made of rubber, and the deformation capacity of the ring is much lower than that of the telescopic cover.

[0011] As an improvement to the above scheme, the vertical cross-section of the ring is a right triangle.

[0012] As an improvement to the above solution, it also includes connecting plates and filter trays; several symmetrically distributed connecting plates are fixed to the ring; each connecting plate is fixed to an arc-shaped filter tray, and the outer arc surface of the filter tray fits against the inner wall of the mounting shell; the filter tray is equipped with a filter screen; when the connecting plate moves with the ring, the filter tray is connected to the discharge tray; under normal conditions, the end of the telescopic cover extends three to five centimeters beyond the laser rust remover and the ranging module.

[0013] As an improvement to the above scheme, the filter tray is designed as a trapezoidal structure with a smaller top and a larger bottom.

[0014] As an improvement to the above solution, it also includes elastic cloth; each filter tank plate is provided with several elastic cloths that are symmetrically distributed, and there is a cavity between the elastic cloths and the inner wall of the filter tank plate; under normal conditions, the elastic cloths on the same filter tank plate are in contact with each other.

[0015] Beneficial effects: This invention uses a telescopic cover to enclose the area between the mounting shell and the metal panel after stretching. Then, the laser rust remover and ranging module are activated to remove rust from the metal panel. In this way, the rust powder generated during the rust removal process remains inside the telescopic cover, preventing rust powder that has detached from the metal panel from floating in the air, polluting the working environment, or being inhaled by the rust removal personnel, thus affecting their health. Furthermore, airflow is blown onto the rust removal area on the metal panel through the air outlet, causing the rust powder on the rust removal area to float towards the inner wall of the telescopic cover and adhere to the inner wall of the telescopic cover. In this way, the rust powder can be detached from the rust removal area of ​​the metal panel, preventing rust powder from adhering to the surface of the metal panel.

[0016] This invention uses a magnetic ring located in the groove of the telescopic cover to collect rust powder floating towards the inner wall of the telescopic cover, so that the rust powder gathers on the magnetic ring for subsequent processing.

[0017] Before carrying out rust removal work, connect the air extraction port to the external pump. During the rust removal work, control the pump to extract the fumes from the area between the mounting shell and the metal panel by passing through the air extraction port, the air extraction hood, and the discharge slot in sequence, so as to prevent the fumes from adhering to the camera and causing low image clarity.

[0018] The present invention uses a right-angled triangle as the vertical cross section of the ring. When the ring is attached to the metal panel, the rust powder blown by the airflow will move towards the inner wall of the telescopic cover along the hypotenuse of the right-angled triangle, and thus be adsorbed onto the magnetic ring on the telescopic cover for easy collection. This avoids some rust powder remaining in the area where the angle is located, which would increase the difficulty of subsequent collection work.

[0019] This invention utilizes a laser rust remover to perform localized, targeted rust removal on metal panels. The distance measurement module, equipped with built-in ranging and optical instruments, measures the distance based on the laser's reflection wavelength. A calibration instrument is used to calibrate the round-trip distance, ensuring the measurement results match the actual situation. The measured rust layer thickness data is then displayed graphically or numerically on a screen, providing a precise rust layer thickness. This allows rust removal personnel to flexibly adjust the laser's energy based on the laser's penetration of the rust layer, achieving accurate rust removal. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the structure disclosed in this invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure disclosed in this invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the combined structure of the laser rust remover and the ranging module disclosed in this invention.

[0023] Figure 4 This is a cross-sectional view of the mounting shell disclosed in this invention;

[0024] Figure 5 The first from the left is a top view of the filter tray and elastic cloth disclosed in this invention, the second from the left is a bottom view of the filter tray and elastic cloth disclosed in this invention, and the first from the right is a structural cross-sectional view of the filter tray disclosed in this invention.

[0025] Labels in the diagram: 1-Handle, 2-Mounting shell, 3-Laser rust remover, 4-Distance measuring module, 5-Electric push rod, 6-Connecting block, 7-Telescopic cover, 8-Air pump, 9-Air supply hose, 10-Air outlet ring, 11-Exhaust cover, 12-Magnetic ring, 13-Camera, 101-Circular ring, 201-Connecting plate, 202-Filter tray plate, 203-Elastic cloth, 2a-Discharge slot, 10a-Air outlet slot, 11a-Exhaust port. Detailed Implementation

[0026] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0027] Example 1

[0028] A portable pulsed laser rust thickness gauge with rust removal function, such as Figures 1-5 As shown, it includes a handle 1, a mounting shell 2, a laser rust remover 3, and a ranging module 4; the handle 1 is fitted with the mounting shell 2; the handle 1 is fitted with a display screen; the mounting shell 2 is fitted with the laser rust remover 3; the laser rust remover 3 is fitted with the ranging module 4, which contains optical instruments, a ranging instrument, and a calibration instrument.

[0029] It also includes an electric push rod 5, a connecting block 6, a telescopic cover 7, an air pump 8, an air supply hose 9, an air outlet ring 10, and a camera 13; the mounting shell 2 is provided with a telescopic cover 7; the mounting shell 2 is equipped with at least two electric push rods 5; each electric push rod 5 has a connecting block 6 fixedly connected to its telescopic part, and the connecting block 6 is connected to the end of the telescopic cover 7; the outer side of the laser rust remover 3 is fixedly connected with an air outlet ring 10; the handle 1 is equipped with two symmetrically distributed air pumps 8; each air pump 8 is connected to an air supply hose 9, and all the air supply hoses 9 pass through the mounting shell 2 and are connected to the air outlet ring 10; the air outlet ring 10 has an air outlet groove 10a; the laser rust remover 3 is equipped with several cameras 13, and the cameras 13 are connected to the display screen, so that the rust removal situation can be observed in real time through the cooperation of the cameras 13 and the display screen.

[0030] It also includes a vacuum hood 11; the mounting shell 2 has two symmetrically distributed discharge slots 2a; the mounting shell 2 is bolted to the two symmetrically distributed vacuum hoods 11, and the vacuum hoods 11 are connected to the discharge slots 2a on the corresponding side; each vacuum hood 11 has a vacuum port 11a.

[0031] It also includes a magnetic ring 12; several magnetic rings 12 are provided inside the telescopic cover 7, and the magnetic rings 12 are located in the groove of the telescopic cover 7, and the magnetic rings 12 collect the rust powder floating inside the telescopic cover 7.

[0032] The discharge slot 2a is set as an inclined slot, and an electromagnet is built into the discharge slot 2a of the mounting shell 2.

[0033] The specific workings of this invention are as follows:

[0034] First, the rust removal personnel hold the handle 1 and position the laser rust remover 3 and the ranging module 4 directly over the metal panel to be rusted. Then, the laser rust remover 3 and the ranging module 4 are activated. The laser rust remover 3 performs localized spot rust removal on the metal panel. By adjusting the energy of the laser rust remover 3, a single laser excitation is performed. The pulsed laser removes part of the rust layer thickness. After multiple laser excitations, the single-point rust layer is completely removed. The laser rust remover 3 contains multiple laser points, which can simultaneously remove rust from multiple points in a localized area, thus completing the laser rust removal work on the metal panel.

[0035] Meanwhile, the reflected signal is collected by the optical instrument built into the ranging module 4 to analyze whether the laser has penetrated the rust layer and display it on the screen. Then, the phase difference between the reflected laser wave and the emitted laser wave is measured by the ranging instrument built into the ranging module 4 to calculate the round-trip distance of the laser wave (distance = phase difference * wavelength / π). The round-trip distance is calibrated by the calibration instrument built into the ranging module 4 to ensure that the ranging result matches the actual situation. The measured rust layer thickness data is then displayed on the screen in graphical or numerical form to obtain the accurate thickness of the rust layer. This allows rust removal personnel to flexibly adjust the energy of the laser rust remover 3 according to the penetration of the laser into the rust layer, thereby achieving the purpose of precise rust removal.

[0036] After aligning the laser rust remover 3 and the ranging module 4 with the metal panel to be rusted, before activating the laser rust remover 3 and the ranging module 4, first control the telescopic part of the electric push rod 5 to move the connecting block 6 toward the metal panel to be rusted and to fit against the metal panel. During this process, the moving connecting block 6 stretches the telescopic cover 7, so that the stretched telescopic cover 7 covers the area between the mounting shell 2 and the metal panel. Then, activate the laser rust remover 3 and the ranging module 4 to remove rust from the metal panel. In this way, the rust powder generated during the rust removal process is always inside the telescopic cover 7, preventing the rust powder that detaches from the metal panel from floating in the air, polluting the working environment, or being inhaled by the rust removal personnel, thus affecting their health.

[0037] Furthermore, while removing rust, the air pump 8 injects air into the air outlet ring 10 through the air supply hose 9, and then blows airflow out to the rust removal area on the metal panel through the air outlet slot 10a. This causes the rust powder on the rust removal area to float towards the inner wall of the telescopic cover 7 and adhere to the inner wall of the telescopic cover 7. In this way, the rust powder can be removed from the rust removal area of ​​the metal panel, avoiding the problem of rust powder adhering to the surface of the metal panel. As the rust removal work progresses, more and more rust powder adheres to the surface of the metal panel, forming a new rust layer, or adhering to the surface of the rust layer that has not yet been removed, which interferes with the rust removal work.

[0038] Meanwhile, when the rust powder floats toward the inner wall of the telescopic cover 7, the magnetic ring 12 located in the groove of the telescopic cover 7 collects the rust powder floating toward the inner wall of the telescopic cover 7, so that the rust powder gathers on the magnetic ring 12 for subsequent processing.

[0039] When the laser rust remover 3 removes rust from the metal panel, the laser irradiates the rust layer, causing it to heat up and evaporate rapidly. This process produces vapors of substances such as iron oxide and tiny metal particles. These vapors and particles mix together to form the so-called laser rust removal fumes. Since the telescopic cover 7 covers the area between the mounting shell 2 and the metal panel, the fumes produced during rust removal adhere to the camera 13, resulting in low image clarity from the camera 13. This affects the rust removal personnel's ability to observe the rust removal process in real time and makes it difficult to adjust the rust removal position in a timely manner, leading to over-rust removal in some areas and damage to the metal panel.

[0040] Therefore, before carrying out rust removal work, the air extraction port 11a is connected to the external pump. During the rust removal work, the pump is controlled to sequentially extract the fumes from the area between the mounting shell 2 and the metal panel covered by the telescopic cover 7 through the air extraction port 11a, the air extraction hood 11 and the discharge slot 2a, so as to prevent the fumes from adhering to the camera 13 and causing the camera 13 to capture low clarity.

[0041] However, when the flue gas is extracted through the exhaust port 11a, the exhaust hood 11 and the discharge trough 2a, some rust powder will be extracted along with the flue gas, causing the rust powder to mix with the extracted flue gas, which makes subsequent flue gas purification and treatment difficult.

[0042] Therefore, in this invention, the discharge trough 2a is set as an inclined trough, and an electromagnet is built into the discharge trough 2a. When the flue gas carrying rust powder is discharged from the discharge trough 2a, the electromagnet on the discharge trough 2a is activated. The flue gas carrying rust powder will come into contact with the inner wall of the discharge trough 2a, thereby adsorbing the rust powder in the flue gas through the electromagnet on the discharge trough 2a. This prevents the flue gas from carrying some rust powder and being extracted together, so that the rust powder is mixed in the extracted flue gas, which would cause difficulties for subsequent flue gas purification and treatment. After the rust removal work is completed, the electromagnet on the discharge trough 2a is stopped, so that the rust powder falls off the electromagnet of the discharge trough 2a for easy cleaning and collection.

[0043] Example 2

[0044] Based on Example 1, such as Figure 3 As shown, it also includes a ring 101; the end of the telescopic cover 7 away from the mounting shell 2 is fixedly connected to the ring 101, and the ring 101 is connected to the connecting block 6.

[0045] The ring 101 is made of rubber, and its deformation capability is much lower than that of the telescopic cover 7, so that the ring 101 can adaptably fit the metal panel.

[0046] The vertical cross section of the ring 101 is a right triangle.

[0047] The specific workings of this invention are as follows:

[0048] Since the telescopic cover 7 is made of telescopic material, it has a certain deformation capacity. When the telescopic cover 7 covers the rust removal area on the metal panel, the telescopic cover 7 and the metal panel are in contact. When the airflow is blown out through the air outlet groove 10a on the air outlet ring 10 to prevent rust powder from adhering, the impact force of the airflow will cause the telescopic cover 7 to deform, thereby creating a gap between the telescopic cover 7 and the metal panel. This causes rust powder to diffuse from the gap between the telescopic cover 7 and the metal panel to the outside, polluting the working environment, or being inhaled by rust removal personnel, affecting their health.

[0049] Therefore, when the telescopic part of the electric push rod 5 drives the connecting block 6 and the telescopic cover 7 to move towards the metal panel, the ring 101 moves synchronously with the connecting block 6, and the ring 101 contacts the metal panel before the connecting block 6 and the telescopic cover 7. Although the ring 101 and the metal panel are also in contact, the ring 101 will not undergo serious deformation, and there will be no gap between the ring 101 and the metal panel due to the impact of airflow. In this way, rust powder can be prevented from spreading to the outside from the gap between the telescopic cover 7 and the metal panel, polluting the working environment, or being inhaled by rust removal personnel, affecting their health.

[0050] When the laser rust remover 3 and the ranging module 4 are vertically downward and facing the horizontal metal panel, due to the certain thickness of the ring 101, the airflow from the air outlet 10a blows the rust powder from the inside to the outside. When some rust powder moves outward from the rust removal area, it gets stuck at the corner formed by the ring 101 and the metal panel. As the amount of rust powder in the rust removal area gradually increases, more and more rust powder will be stuck at the corner under the blowing of the airflow. After the rust removal work is completed, some rust powder will still remain in the area where the corner is located, increasing the difficulty of subsequent collection work.

[0051] Therefore, the present invention makes the vertical cross section of the ring 101 a right triangle. When the ring 101 is attached to the metal panel, the rust powder blown by the airflow will move towards the inner wall of the telescopic cover 7 along the hypotenuse of the right triangle, and thus be adsorbed onto the magnetic ring 12 on the telescopic cover 7 for smooth collection, avoiding the fact that some rust powder will remain in the area where the angle is located, which would increase the difficulty of subsequent collection work.

[0052] Example 3

[0053] Based on Example 2, such as Figure 3-5As shown, it also includes a connecting plate 201 and a filter plate 202; the ring 101 is bolted to two symmetrically distributed connecting plates 201; each connecting plate 201 is fixed to an arc-shaped filter plate 202, and the outer arc surface of the filter plate 202 is in contact with the inner wall of the mounting shell 2; the filter plate 202 is provided with a filter screen; when the connecting plate 201 moves with the ring 101, the filter plate 202 is connected to the discharge groove 2a; under normal conditions, the end of the telescopic cover 7 extends three to five centimeters beyond the laser rust remover 3 and the ranging module 4.

[0054] The filter plate 202 is designed with a trapezoidal structure that is smaller at the top and larger at the bottom, which utilizes Bernoulli's principle to increase the airflow velocity.

[0055] It also includes elastic cloth 203; each filter tray 202 has two symmetrically distributed elastic cloths 203 inside, and there is a cavity between the elastic cloth 203 and the inner wall of the filter tray 202; under normal conditions, the elastic cloths 203 on the same filter tray 202 are in contact with each other.

[0056] The specific workings of this invention are as follows:

[0057] To ensure that the electromagnet on the discharge tank 2a can fully adsorb the rust powder passing through it, the opening of the discharge tank 2a should not be too large. However, when the rust layer on the metal panel surface is thick and a large amount of rust powder is generated during rust removal, the electromagnet on the discharge tank 2a will adsorb the rust powder. Due to the limited width of the opening of the discharge tank 2a, as the thickness of the rust powder adsorbed on the inner wall of the discharge tank 2a continues to increase, the adsorption capacity of the electromagnet on the discharge tank 2a for the rust powder passing through it will decrease. This will cause some of the rust powder that is not adsorbed to leak out of the discharge tank 2a, resulting in a large amount of rust powder in the flue gas, which will affect the purification and treatment of the flue gas.

[0058] Therefore, when the telescopic part of the electric push rod 5 drives the connecting block 6, the telescopic cover 7 and the ring 101 to move towards the metal panel, the connecting plate 201 moves synchronously with the connecting block 6, thereby driving the filter plate 202 to move. When the ring 101 is in contact with the metal panel, the filter plate 202 is connected to the discharge trough 2a. In this way, when the flue gas carries rust powder and is discharged from the discharge trough 2a, the rust powder can be intercepted by the filter screen on the filter plate 202, preventing the rust powder from entering the discharge trough 2a.

[0059] However, when the rust layer on the metal panel surface is thin and the rust powder and fumes generated during rust removal are small, if the telescopic cover 7 is still stretched as a whole to cover the metal panel before rust removal, the overall time will be too long, affecting the rust removal efficiency. Furthermore, if there is a filter screen at the discharge tank 2a at this time, the filter screen will affect the airflow of the discharge tank 2a, causing the fumes to be discharged too slowly, which will also affect the rust removal efficiency.

[0060] Therefore, when the rust layer on the metal panel surface is thin and the rust powder and fumes generated during rust removal are small, in order to ensure rust removal efficiency, the rust removal personnel only need to hold the handle 1 to make the telescopic cover 7 fit against the metal panel through the ring 101. The telescopic cover 7 and the filter tank plate 202 are kept in their initial state inside the mounting shell 2 to avoid the overall stretching of the telescopic cover 7, which would take too long. The filter screen at the discharge tank 2a would affect the airflow of the discharge tank 2a, thus affecting the rust removal efficiency.

[0061] Furthermore, during this process, since the end of the telescopic cover 7 extends 43-5 cm beyond the laser rust remover 3 and the ranging module, the telescopic cover 7 still has the ability to prevent rust powder and smoke leakage.

[0062] It should be noted that under normal conditions, because the elastic cloths 203 on the same filter plate 202 are closely fitted together, the filter plate 202 is kept in a closed state when it is not connected to the discharge channel 2a. This prevents a large amount of rust powder from accumulating in the grooves of the filter plate 202, which would clog the filter screen when it is connected to the discharge channel 2a. When the filter plate 202 is connected to the discharge channel 2a and air is drawn through the discharge channel 2a, the air in the cavity between the elastic cloths 203 and the inner wall of the filter plate 202 will be cleared first. When air is extracted, the cavity is placed under negative pressure, which creates an adsorption force on the elastic cloth 203. Under the action of negative pressure, the two elastic cloths 203 adhere tightly to the inner wall of the filter plate 202, leaving a gap between them to ensure normal airflow. When the exhaust trough 2a stops extracting air, external air enters the cavity, removing the negative pressure and thus eliminating the negative pressure effect on the elastic cloths 203. The elastic cloths 203 can then return to their initial state under their own elastic force, sealing the filter plate 202.

[0063] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A pulsed laser rust layer thickness gauge capable of removing rust, comprising a handle (1), a mounting shell (2), a laser rust remover (3), and a ranging module (4); the handle (1) is fitted with the mounting shell (2); the handle (1) is fitted with a display screen; the mounting shell (2) is fitted with the laser rust remover (3), which performs localized fixed-point rust removal; the laser rust remover (3) is fitted with a ranging module (4), which has built-in optical instruments, a ranging instrument, and a calibration instrument, and calculates the thickness of the cleaned rust layer based on the phase difference of the pulsed laser, thereby realizing the measurement of the rust layer thickness; characterized in that, It also includes an electric push rod (5), a connecting block (6), a telescopic cover (7), an air pump (8), an air supply hose (9), an air outlet ring (10), and a camera (13); the mounting shell (2) is provided with a telescopic cover (7); the mounting shell (2) is equipped with several electric push rods (5); each electric push rod (5) has a connecting block (6) fixedly connected to its telescopic part, and the connecting block (6) is connected to the telescopic cover (7); the laser rust remover (3) is fixedly connected with an air outlet ring (10); the handle (1) is equipped with several air pumps (8) that are symmetrically distributed; each air pump (8) is connected to an air supply hose (9), and all the air supply hoses (9) pass through the mounting shell (2) and are connected to the air outlet ring (10); the air outlet ring (10) has an air outlet groove (10a); the laser rust remover (3) is equipped with several cameras (13), and the cameras (13) are connected to the display screen; It also includes a ring (101); the end of the telescopic cover (7) away from the mounting shell (2) is fixed with a ring (101), and the ring (101) is connected to the connecting block (6); It also includes a connecting plate (201) and a filter plate (202); the ring (101) is fixed with several symmetrically distributed connecting plates (201); each connecting plate (201) is fixed with an arc-shaped filter plate (202), and the outer arc surface of the filter plate (202) is in contact with the inner wall of the mounting shell (2); the filter plate (202) is provided with a filter screen; when the connecting plate (201) moves with the ring (101), the filter plate (202) is connected to the discharge groove (2a); under normal conditions, the end of the telescopic cover (7) extends three to five centimeters beyond the laser rust remover (3) and the ranging module (4).

2. The rust-removing pulsed laser rust layer thickness gauge according to claim 1, characterized in that, It also includes an air extraction hood (11); the mounting shell (2) has several symmetrically distributed discharge slots (2a); the mounting shell (2) is fixedly connected to several symmetrically distributed air extraction hoods (11), and the air extraction hoods (11) are connected to the discharge slots (2a) on the corresponding side; each air extraction hood (11) has an air extraction port (11a).

3. A pulsed laser rust layer thickness gauge capable of removing rust according to any one of claims 1-2, characterized in that, It also includes a magnetic ring (12); the telescopic cover (7) is provided with a number of magnetic rings (12), and the magnetic rings (12) are located in the groove of the telescopic cover (7).

4. The pulsed laser rust layer thickness gauge capable of removing rust according to claim 2, characterized in that, The discharge slot (2a) is set as an inclined slot, and an electromagnet is built into the discharge slot (2a) of the mounting shell (2).

5. The rust-removing pulsed laser rust layer thickness gauge according to claim 4, characterized in that, The ring (101) is made of rubber, and the deformation capability of the ring (101) is much lower than that of the telescopic cover (7).

6. The rust-removing pulsed laser rust layer thickness gauge according to claim 5, characterized in that, The vertical cross section of the ring (101) is a right triangle.

7. The rust-removing pulsed laser rust layer thickness gauge according to claim 1, characterized in that, The filter tray (202) is designed as a trapezoidal structure with a smaller top and a larger bottom.

8. The rust-removing pulsed laser rust layer thickness gauge according to claim 7, characterized in that, It also includes elastic cloth (203); each filter tray (202) is provided with several elastic cloths (203) that are symmetrically distributed, and there is a cavity between the elastic cloth (203) and the inner wall of the filter tray (202); under normal conditions, the elastic cloths (203) on the same filter tray (202) are in contact with each other.

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