Eddy current laser combined thickness gauge

Abstract

The invention belongs to the technical field of laser measuring instruments, and discloses an eddy current laser combined thickness gauge, which comprises a data processing and control host, a moving assembly arranged outside the sensor probe and used for measuring the thickness of the eddy current laser combined thickness gauge, and an eddy current laser combined thickness gauge, and the output end of the data processing and control host is electrically connected with the sensor probe. The device is used for moving a sensor probe on the surface of a metal substrate in a narrow environment to adjust the measurement position, so that the sensor probe is separated from manual work. After the motor of the moving assembly drives the worm to rotate, the worm drives the worm gear and the transmission rod to rotate, so that the transmission rod drives the roller to move on the metal substrate, and the moving table drives the sensor probe to move on the metal substrate in a narrow environment to adjust the measurement position. The device can be used for measurement in an environment that a worker cannot contact the outer surface of the metal substrate, and the problem that the thickness of a non-metal covering layer attached to the outer surface of the metal substrate cannot be measured due to a narrow space in a narrow environment is solved.

Description

Technical Field

[0001] This invention belongs to the field of laser measuring instrument technology, specifically an eddy current laser combined thickness gauge. Background Technology

[0002] Currently, in modern industrial manufacturing, non-metallic coatings (such as coatings, platings, and films) on the outer surface of metal substrates play a crucial role in the performance, lifespan, and safety of products. For example, the paint coating on a car body not only affects its appearance but also determines its corrosion resistance; the thickness of the insulating coating on the aluminum substrate in electronic devices directly affects the insulation performance and heat dissipation efficiency of the circuit; and in the aerospace field, the thickness of the ceramic heat-insulating coating on the surface of metal parts is closely related to the high-temperature resistance of the equipment. Therefore, accurately measuring the thickness of these non-metallic coatings using an eddy current laser combined thickness gauge is a key step in ensuring product quality.

[0003] In current industrial production, the measurement of the thickness of non-metallic coatings on the outer surface of metal substrates often faces challenges in narrow environments, such as inside pipes and in the gaps of mechanical parts. Traditional measurement methods require manual pressing and moving of the probe, which is not only inconvenient to operate, but also prone to affecting measurement accuracy due to uneven force and movement deviation.

[0004] Therefore, an eddy current laser combined thickness gauge is proposed to solve the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides an eddy current laser combined thickness gauge, including a data processing and control host, wherein the output terminal of the data processing and control host is electrically connected to a sensor probe, and further includes: A moving component, disposed outside the sensor probe, is used to move and adjust the measurement position of the sensor probe on the surface of a metal substrate in a confined environment. This allows the sensor probe to be driven to move and adjust its measurement position in a confined environment even after it is no longer manually operated. The moving component includes a moving stage disposed outside the sensor probe, and the sensor probe is located inside the moving stage and moves and adjusts its measurement position following the movement of the moving stage. The downward pressure adjustment component is located inside the moving stage and is used to controllably adjust the downward pressure of the sensor probe during the movement of the moving stage. This allows the contact distance between the sensor probe and the surface of the metal substrate to be controllable, so that even after the sensor probe is removed from manual operation, it can still be controlled to maintain a stable contact with the surface of the metal substrate to measure the thickness of the non-metallic coating layer on its surface. The cleaning component, located at the bottom of the moving stage, is used to clean dust adhering to the surface of the metal substrate during the movement of the moving stage, so that the dust will not affect the accuracy of the sensor probe when measuring thickness.

[0006] Preferably, the moving component further includes a transmission rod, which is movably connected inside the moving platform. Both ends of the transmission rod are movably connected to rollers via pins. The top of the moving platform has a storage opening, and a motor is fixedly installed at the bottom of the inner wall of the storage opening. The output end of the motor is connected to a worm gear. A worm wheel is connected to the surface of the transmission rod, and the worm gear meshes with the worm wheel. A long gear is connected to the top of the worm gear. The surface of the transmission rod adjusts the rolling angle of the rollers through an elastic tilting component, allowing the rollers to adapt and roll on the surface of the circular tube. The surface of the rollers is positioned by a friction positioning component, increasing their stability after they have rolled.

[0007] Preferably, the elastic tilting member includes a ring, one side of which is connected to a pulling spring, the side of the pulling spring away from the ring is connected to the surface of the roller, and the side of the ring near the roller is connected to an adjusting baffle.

[0008] Preferably, the friction positioning element includes a friction ring connected to the surface of the roller, and an electromagnetic plate is connected to the surface of the roller.

[0009] Preferably, the downward pressure adjustment assembly includes a fixing sleeve, which is threadedly connected to the inside of the receiving port. The sensor probe is located inside the fixing sleeve. A connecting ring is connected to the top of the fixing sleeve, and an electromagnetic plate is connected to the top of the connecting ring. A limit rod is connected to the top of the connecting ring, and a drive gear is provided on the top of the connecting ring. The top end of the limit rod extends through to the top of the drive gear. A reset spring is sleeved on the surface of the limit rod. The top of the reset spring is connected to the bottom of the drive gear, and the bottom of the reset spring is connected to the top of the connecting ring. The sensor probe is fixed inside the fixing sleeve by a fastener.

[0010] Preferably, the fixing member includes a clamping block, which is slidably connected inside the fixing sleeve. A wear-resistant ring is connected to the surface of the sensor probe. The inner side of the clamping block is slidably engaged with the surface of the wear-resistant ring. A screw is threadedly connected to the surface of the fixing sleeve. One end of the screw near the clamping block is movably connected inside the clamping block.

[0011] Preferably, the inner side of the abutment block is movably embedded with balls, which slide in contact with the surface of the wear-resistant ring.

[0012] Preferably, the cleaning assembly includes a cleaning groove located on the rear side of the bottom of the moving platform. A drive rod is movably connected inside the cleaning groove, and a cleaning brush sleeve is connected to the surface of the drive rod. A cleaning scraper is connected to the rear side of the inner wall of the cleaning groove, and the surface of the drive rod is connected to a transmission rod via a linkage.

[0013] Preferably, the linkage includes a first gear connected to the surface of the transmission rod, and a second gear fixedly mounted on the surface of the drive rod, wherein the first gear and the second gear mesh with each other.

[0014] Preferably, the top of the mobile platform is provided with a battery slot for storing batteries for use during movement.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a motor-driven worm gear to rotate, which in turn drives a worm wheel and a transmission rod to rotate. The transmission rod then moves a roller on a metal substrate, causing the moving stage to move the sensor probe on the metal substrate in a confined space to adjust the measurement position. This allows for measurements to be taken in environments where it is impossible for humans to access the outer surface of the metal substrate, preventing the problem of non-metallic coatings attached to the outer surface of the metal substrate being unable to be measured due to limited space.

[0016] Furthermore, although the moving component enables the sensor probe to move and adjust its measurement position, the pressure applied by the sensor probe to the metal substrate during measurement cannot be controlled. The sensor probe needs to maintain a stable contact with the surface of the metal substrate during measurement. Insufficient pressure will cause gaps during measurement, affecting the stability of the eddy current signal, while excessive pressure may squeeze the non-metallic covering layer, affecting the measurement accuracy. The electromagnetic plate on the connecting ring magnetically attracts the drive gear, causing the drive gear to move downward after being magnetically attracted. The downward movement of the drive gear applies pressure to the reset spring, and after the drive gear moves downward, it meshes with the long gear so that the worm gear rotates in conjunction with the drive gear and the fixed sleeve, causing the fixed sleeve to spiral downward inside the receiving port, causing the sensor probe inside the fixed sleeve to move downward. After the sensor probe moves downward, it contacts the non-metallic covering layer attached to the surface of the metal substrate for thickness measurement.

[0017] Furthermore, although the moving component and the downward pressure adjustment component realize the movement adjustment and sensor probe contact pressure control in narrow environments, the measurement thickness will also be affected when the non-metallic coating surface on the metal substrate is covered with dust. When the transmission rod is driven, it drives gear one to rotate. Gear one drives the drive rod to rotate through meshing with gear two, so that the cleaning brush sleeve is rotated by the drive rod to clean the dust on the non-metallic coating surface of the area to be measured. After the moving stage moves, it drives the cleaning scraper to scrape the metal substrate after the cleaning brush sleeve has been cleaned. The cleaning scraper can also prevent dust from spilling to the bottom of the sensor probe and re-attaching. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2This is a three-dimensional schematic diagram of the pressure regulating component of the present invention; Figure 3 This is an exploded perspective view of the moving component and pressure regulating component of the present invention; Figure 4 This is a three-dimensional schematic diagram of the roller of the present invention; Figure 5 This is a three-dimensional schematic diagram of the cleaning component of the present invention; Figure 6 This is a three-dimensional cross-sectional schematic diagram of the fixing sleeve of the present invention; Figure 7 This is a three-dimensional cross-sectional schematic diagram of the roller of the present invention. In the figure: 1. Data processing and control host; 2. Sensor probe; 3. Moving component; 31. Moving platform; 32. Transmission rod; 33. Roller; 34. Storage port; 35. Motor; 36. Worm gear; 37. Worm wheel; 38. Long gear; 39. Elastic tilting component; 391. Ring; 392. Pulling spring; 393. Adjusting baffle; 310. Friction positioning component; 3101. Friction ring; 3102. Electromagnetic plate one; 4. Downward pressure adjustment... 41. Fixing sleeve; 42. Connecting ring; 43. Electromagnetic plate II; 44. Limiting rod; 45. Drive gear; 46. Reset spring; 47. Fixing component; 471. Clamping block; 472. Wear-resistant ring; 473. Screw; 5. Cleaning component; 51. Cleaning groove; 52. Drive rod; 53. Cleaning brush sleeve; 54. Cleaning scraper; 55. Linkage component; 551. Gear I; 552. Gear II; 6. Ball bearing; 7. Battery slot. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, the present invention provides an eddy current laser combined thickness gauge, including a data processing and control host 1, the output terminal of which is electrically connected to a sensor probe 2, and further including: The moving component 3 is disposed outside the sensor probe 2 and is used to move and adjust the measurement position of the sensor probe 2 on the surface of the metal substrate in a narrow environment. This allows the sensor probe 2 to be driven to move and adjust its measurement position in a narrow environment even after it is no longer manually operated. The moving component 3 includes a moving stage 31 disposed outside the sensor probe 2, and the sensor probe 2 is located inside the moving stage 31 and moves and adjusts its measurement position following the movement of the moving stage 31. The downward pressure adjustment component 4 is located inside the moving stage 31 and is used to controllably adjust the downward pressure of the sensor probe 2 during the movement of the moving stage 31. This allows the contact distance between the sensor probe 2 and the surface of the metal substrate to be controllable, so that even after the sensor probe 2 is removed from manual operation, it can still be controlled to maintain a stable contact with the surface of the metal substrate to measure the thickness of the non-metallic coating layer on its surface. The cleaning component 5 is located at the bottom of the moving stage 31 and is used to clean the dust adhering to the surface of the metal substrate during the movement of the moving stage 31, so that the dust will not affect the accuracy of the sensor probe 2 when measuring thickness.

[0021] Specifically, the core working principle of the eddy current laser combined thickness gauge is that the eddy current sensor integrated in the sensor probe 2 works in concert with the laser sensor to obtain the "distance from the surface of the metal substrate to the sensor probe 2" and the "distance from the surface of the non-metallic coating layer to the sensor probe 2". The difference between the two is the thickness of the coating layer. The eddy current sensor coil in the sensor probe 2 is energized with a high-frequency alternating current, which generates an alternating electromagnetic field that passes through the non-metallic coating layer such as coating, paint film, plastic layer, etc. Because it is non-conductive, it does not affect the propagation of the magnetic field. Eddy currents are induced on the surface of the metal substrate below. The reverse magnetic field generated by the eddy current will change the impedance of the coil. By detecting the impedance change, the vertical distance from the sensor probe 2 to the surface of the metal substrate can be accurately calculated. The laser emitter inside sensor probe 2 emits a visible or infrared laser beam that is perpendicularly irradiated onto the surface of the cover layer. After being reflected by the surface of the cover layer, the laser is received by the photodetector inside sensor probe 2. The vertical distance from sensor probe 2 to the surface of the cover layer is calculated using the triangulation principle. The eddy current laser combined thickness gauge is an existing mature product consisting of a control end and a measurement end.

[0022] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the moving component 3 also includes a transmission rod 32, which is movably connected inside the moving platform 31. Both ends of the transmission rod 32 are movably connected to rollers 33 via pins. The top of the moving platform 31 has a storage opening 34, and a motor 35 is fixedly installed at the bottom of the inner wall of the storage opening 34. The output end of the motor 35 is connected to a worm gear 36. A worm wheel 37 is connected to the surface of the transmission rod 32, and the worm gear 36 meshes with the worm wheel 37. A long gear 38 is connected to the top of the worm gear 36. The surface of the transmission rod 32 adjusts the rolling angle of the rollers 33 through an elastic tilting member 39, so that the rollers 33 can adapt to the rolling movement on the surface of the cylindrical metal substrate. The surface of the rollers 33 is positioned by a friction positioning member 310 after the rollers 33 have rolled, which increases their stability after they stop.

[0023] Specifically, in use, the moving stage 31 is placed on a metal substrate and supported by multiple rollers 33. When the motor 35 drives the worm gear 36 and worm wheel 37 to rotate, the transmission rod 32 fixed to the worm wheel 37 is driven, which in turn drives the rollers 33 to roll on the surface of the metal substrate to adjust the measuring position of the moving stage 31. This allows the moving stage 31 to move and adjust the sensor probe 2 connected by wires on the narrow metal substrate. A camera and lighting module can also be attached to the moving stage 31 to provide visualization of the moving position of the moving stage 31.

[0024] like Figure 1 , Figure 4 and Figure 7 As shown, the elastic tilting member 39 includes a ring 391, a pulling spring 392 connected to one side of the ring 391, the side of the pulling spring 392 away from the ring 391 connected to the surface of the roller 33, and an adjusting baffle 393 connected to the side of the ring 391 close to the roller 33.

[0025] Specifically, the elastic tilting member 39 provides adaptive adjustment as the moving platform 31 moves on the circular tube and the curved metal substrate. As the roller 33 moves on the circular tube, since the movable connection between the transmission rod 32 and the roller 33 also adopts a pin-like connection method, when the roller 33 moves on the circular tube, the roller 33 is tilted around the pin at the connection with the transmission rod 32 as the center. After adaptive adjustment, the tilted roller 33 is blocked by the adjusting baffle 393 and pulled by the pulling spring 392. This can double limit the tilt angle of the roller 33 during rolling, ensuring that while the friction ring 3101 on the roller 33 rolls on the circular tube, the contact surface of the roller 33 still contacts the circular tube before the moving platform 31, ensuring the smoothness of the rolling of the moving platform 31 on the circular tube metal substrate.

[0026] like Figure 7 As shown, the friction positioning component 310 includes a friction ring 3101, which is connected to the surface of the roller 33, and an electromagnetic plate 3102 is connected to the surface of the roller 33.

[0027] Specifically, by setting a friction ring 3101, the roller 33 can rub against the surface of the tube when it tilts while rolling on the tube, making the roller 33 more stable while rolling on the tube. The electromagnetic plate 3102 can be energized and magnetically positioned with the metal substrate after the roller 33 stops rolling, so that the roller 33 can maintain the stability after positioning when it is not rolling.

[0028] like Figures 1 to 3As shown, the downward pressure adjustment assembly 4 includes a fixing sleeve 41, which is threaded into the inside of the receiving port 34. The sensor probe 2 is located inside the fixing sleeve 41. A connecting ring 42 is connected to the top of the fixing sleeve 41, and an electromagnetic plate 43 is connected to the top of the connecting ring 42. A limit rod 44 is connected to the top of the connecting ring 42, and a drive gear 45 is provided on the top of the connecting ring 42. The top end of the limit rod 44 extends through to the top of the drive gear 45. A reset spring 46 is sleeved on the surface of the limit rod 44. The top end of the reset spring 46 is connected to the bottom end of the drive gear 45, and the bottom end of the reset spring 46 is connected to the top end of the connecting ring 42. The sensor probe 2 is fixed inside the fixing sleeve 41 by a fixing member 47.

[0029] Specifically, after the moving stage 31 moves to the designated measurement position on the metal substrate, the fixed sleeve 41 needs to be driven to push the sensor probe 2 down close to the metal substrate to measure the thickness of its non-metallic coating. In use, firstly, the electromagnetic plate 43 is energized to magnetically attract the drive gear 45, causing the drive gear 45 to move down along the limit rod 44 until it meshes with the long gear 38. Then, when the motor 35 continues to drive the worm gear 36, it drives the long gear 38 to rotate and rotates the drive gear 45 in conjunction. This causes the drive gear 45 to rotate the connecting ring 42 and the fixed sleeve 41 through multiple limit rods 44, causing the fixed sleeve 41 to spiral down inside the receiving port 34. This causes the sensor probe 2 in the wear-resistant ring 472 to move down and come into contact with the non-metallic coating on the surface of the metal substrate to measure the thickness. It should be noted that the drive gear 45 can continuously move down with the fixed sleeve 41. During the meshing process with the long gear 38, the drive gear 45 also moves downward on its surface. Since the height of the long gear 38 is higher than that of the drive gear 45, the drive gear 45 will continue to move downward and mesh with the long gear 38 without losing the linkage effect. The reset spring 46 can push the drive gear 45 upward and disengage from the long gear 38 after the electromagnetic plate 2 43 is de-energized, so that its transmission rod 32 is disconnected from its transmission effect. The supporting force of the reset spring 46 can only support the drive gear 45. Once the drive gear 45 is affected by magnetic attraction, the supporting force of the reset spring 46 is broken, and it can be moved downward. Therefore, the meshing of the drive gear 45 and the long gear 38 can be controlled through this structure. The drive gear 45 and the fixed sleeve 41 are only driven when the thickness needs to be measured. When no measurement is needed and only the movement function is required, the fixed sleeve 41 drives the sensor probe 2 to stay in the original position without affecting the movement of the moving stage 31. The two are distinguished.

[0030] like Figure 1 , Figure 2 , Figure 2 and Figure 6As shown, the fixing member 47 includes a clamping block 471, which is slidably connected inside the fixing sleeve 41. A wear-resistant ring 472 is connected to the surface of the sensor probe 2. The inner side of the clamping block 471 is slidably engaged with the surface of the wear-resistant ring 472. A screw 473 is threadedly connected to the surface of the fixing sleeve 41. One end of the screw 473 near the clamping block 471 is movably connected inside the clamping block 471.

[0031] Specifically, since the sensor probe 2 needs to be fixed in the fixing sleeve 41 and moved together with it by the fixing sleeve 41, it needs to be fixed in the fixing sleeve 41 before it moves with the fixing sleeve 41. When the sensor probe 2 needs to be fixed in the fixing sleeve 41, the screw 473 is rotated first, so that the screw 473 rotates on the surface of the fixing sleeve 41 and moves outward, thereby driving the clamping block 471 to be housed in the groove opened on the inner wall of the fixing sleeve 41. The shape of the groove is consistent with the shape of the clamping block 471, so when the clamping block 471 is fixed in the groove, the clamping block 471 can be moved into the groove opened on the inner wall of the fixing sleeve 41. When stored inside, it can be hidden. Then, the sensor probe 2 is placed inside, so that the annular groove on the surface of the wear-resistant ring 472 carried on the sensor probe 2 is flush with the clamping block 471. Then, when the screw 473 rotates in the opposite direction, it pushes the clamping block 471, which is limited by the groove on the inner wall of the fixing sleeve 41, into the annular groove on the surface of the wear-resistant ring 472 to limit it, thereby fixing the sensor probe 2 in the fixing sleeve 41. The wear-resistant ring 472 serves to connect and fix the sensor probe 2 to the fixing sleeve 41.

[0032] like Figure 6 As shown, a ball bearing 6 is movably embedded on the inner side of the clamping block 471, and the ball bearing 6 slides in contact with the surface of the wear-resistant ring 472.

[0033] Specifically, by setting the ball bearing 6, the abutment block 471 abuts against the wear-resistant ring 472 through the contact of the ball bearing 6, so that the sensor probe 2 can be rotated when it is limited in the fixed sleeve 41. This allows the sensor probe 2 to be rotated so that when the electrical connection line is bent, the rotation of the sensor probe 2 can prevent the electrical connection line of the data processing and control host 1 from being continuously bent and affecting the movement and use of the sensor probe 2.

[0034] like Figures 1 to 4 As shown, the cleaning assembly 5 includes a cleaning groove 51, which is located on the rear side of the bottom of the moving platform 31. A drive rod 52 is movably connected inside the cleaning groove 51. A cleaning brush sleeve 53 is connected to the surface of the drive rod 52. A cleaning scraper 54 is connected to the rear side of the inner wall of the cleaning groove 51. The surface of the drive rod 52 is connected to the transmission rod 32 through a linkage 55.

[0035] Specifically, because the surface of the metal substrate in a confined environment has not been cleaned for a long time, dust will adhere to its surface. When the moving stage 31 needs to clean the part it passes through while moving on the metal substrate, the gear 2 552 rotates the drive rod 52, causing the drive rod 52 to drive the cleaning brush sleeve 53 to rotate and clean the dust adhering to the metal substrate in front of the moving stage 31. After the cleaning brush sleeve 53 cleans the surface of the metal substrate, the cleaning scraper 54 scrapes it clean. This prevents the heavy dust from affecting the accuracy of the sensor probe 2 when measuring the thickness of the non-metallic coating layer when it moves down and comes into contact with the non-metallic coating layer on the metal substrate. By removing the dust from the surface of the non-metallic coating layer, a more accurate thickness value can be obtained when measuring the thickness of the non-metallic coating layer in a confined environment.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, the linkage 55 includes a first gear 551, which is connected to the surface of the transmission rod 32. A second gear 552 is fixedly installed on the surface of the drive rod 52, and the first gear 551 and the second gear 552 mesh with each other.

[0037] Specifically, gear 551 can transmit the power of transmission rod 32 to gear 552. One effect is that the power transmission during movement drives the drive rod 52 to rotate. The other effect is that when gear 551 rotates and meshes with gear 552, the drive rod 52 can drive the cleaning brush sleeve 53 to sweep dust in the forward direction of the moving table 31, so that dust is not easily scattered around the sensor probe 2 and affects the thickness measurement.

[0038] like Figures 1 to 3 As shown, the top of the mobile station 31 has a battery slot 7 for storing batteries for use during movement.

[0039] Specifically, by setting up the battery slot 7, a mobile power source can be placed in the mobile station 31 to power the motor 35, the first electromagnetic plate 3102 and the second electromagnetic plate 43 for use, and a circuit board can be placed to distribute the power for use.

[0040] The working process of the technical solution provided by this invention is as follows: When the present invention moves to a designated measurement position on a metal substrate in a confined environment, the motor 35 first powers the worm gear 36 and worm wheel 37 to drive the transmission rod 32 to rotate, so that the roller 33 connected to the transmission rod 32 rolls on the surface of the metal substrate. The moving stage 31 drives the sensor probe 2 and the fixed sleeve 41 to roll on the metal substrate in the confined environment to adjust the measurement position. The moving distance is controlled by the length of the electrical connection line between the data processing and control host 1 and the sensor probe 2. Furthermore, during the movement of the moving platform 31, the rotation of gear 551 driven by the transmission rod 32 is synchronized with the meshing of gear 552, which drives the drive rod 52 and the cleaning brush sleeve 53 to rotate. As the cleaning brush sleeve 53 rotates, it cleans the dust on the metal substrate in the forward direction of the moving platform 31. After the dust adhering to the surface of the metal substrate is cleaned, the cleaning scraper 54 scrapes off the adhering dust a second time, thus cleaning the dust twice and preventing any dust from adhering to it and affecting the accuracy of the subsequent thickness measurement by the sensor probe 2. When the moving stage 31 moves quickly to the designated position, and the downward pressure of the sensor probe 2 needs to be adjusted, power is first supplied to the electromagnetic plate 43. After the electromagnetic plate 43 is energized, it generates magnetic attraction to the drive gear 45 under the elastic support of multiple reset springs 46. After the drive gear 45 is attracted by the magnetic force, it moves downward and meshes with the long gear 38. Then, under the transmission of the long gear 38 and the drive gear 45 driven by the motor 35, the drive gear 45, the connecting ring 42 and the fixed sleeve 41 are driven to rotate. The threaded connection between the fixed sleeve 41 and the storage port 34 moves downward spirally after the fixed sleeve 41 rotates, so that the sensor probe 2 fixed inside the fixed sleeve 41 moves downward and approaches the non-metallic coating layer on the metal substrate until it is in contact with it. Then the motor 35 stops rotating. After the moving stage 31, the sensor probe 2 and the fixed sleeve 41 remain stationary, the eddy current sensor integrated in the sensor probe 2 works together with the laser sensor to measure the thickness of the non-metallic coating layer on the metal substrate. Its function is to move and measure the thickness of the non-metallic coating layer in narrow environments where it is not easy for people to touch it.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An eddy current laser combined thickness gauge, comprising a data processing and control host (1), wherein the output terminal of the data processing and control host (1) is electrically connected to a sensor probe (2), characterized in that, Also includes: The moving component (3) is disposed outside the sensor probe (2) and is used to move and adjust the measurement position of the sensor probe (2) on the surface of the metal substrate in a narrow environment, so that the sensor probe (2) can be driven to move and adjust the measurement position in a narrow environment even after being removed from manual operation; the moving component (3) includes a moving stage (31) disposed outside the sensor probe (2), and the sensor probe (2) is located inside the moving stage (31) and moves and adjusts the measurement position with the movement of the moving stage (31); The pressure adjustment component (4) is located inside the moving stage (31) and is used to controllably adjust the pressure of the sensor probe (2) during the movement of the moving stage (31), so that the contact distance between the sensor probe (2) and the surface of the metal substrate is controllable, and the sensor probe (2) can be controlled to maintain a stable contact with the surface of the metal substrate after being removed from manual operation, so as to measure the thickness of the non-metallic coating layer on its surface.

2. The eddy current laser combined thickness gauge according to claim 1, characterized in that: The moving component (3) also includes a transmission rod (32), which is movably connected inside the moving platform (31). Both ends of the transmission rod (32) are movably connected to rollers (33) via pins. The top of the moving platform (31) has a storage opening (34). A motor (35) is fixedly installed at the bottom of the inner wall of the storage opening (34). The output end of the motor (35) is connected to a worm gear (36). A worm wheel (37) is connected to the surface of the transmission rod (32). The worm gear (36) meshes with the worm wheel (37). A long gear (38) is connected to the top of the worm gear (36). The surface of the transmission rod (32) adjusts the rolling angle of the rollers (33) through an elastic tilting member (39), so that the rollers (33) can adapt to the adjustment and roll on the surface of the circular tube. The surface of the rollers (33) is positioned by a friction positioning member (310) after the rollers (33) roll, so as to increase their stability after they stop.

3. The eddy current laser combined thickness gauge according to claim 2, characterized in that: The elastic tilting member (39) includes a ring (391), one side of which is connected to a pull spring (392), the side of the pull spring (392) away from the ring (391) is connected to the surface of the roller (33), and the side of the ring (391) close to the roller (33) is connected to an adjusting baffle (393).

4. The eddy current laser combined thickness gauge according to claim 2, characterized in that: The friction positioning component (310) includes a friction ring (3101), which is connected to the surface of the roller (33), and an electromagnetic plate (3102) is connected to the surface of the roller (33).

5. The eddy current laser combined thickness gauge according to claim 1, characterized in that: The pressure adjustment assembly (4) includes a fixed sleeve (41), which is threaded into the inside of the receiving port (34). The sensor probe (2) is located inside the fixed sleeve (41). A connecting ring (42) is connected to the top of the fixed sleeve (41). An electromagnetic plate (43) is connected to the top of the connecting ring (42). A limit rod (44) is connected to the top of the connecting ring (42). A drive gear (45) is provided on the top of the connecting ring (42). The top end of the limit rod (44) extends through to the top of the drive gear (45). A reset spring (46) is sleeved on the surface of the limit rod (44). The top end of the reset spring (46) is connected to the bottom of the drive gear (45). The bottom end of the reset spring (46) is connected to the top of the connecting ring (42). The sensor probe (2) is fixed inside the fixed sleeve (41) by a fastener (47).

6. The eddy current laser combined thickness gauge according to claim 5, characterized in that: The fixing member (47) includes a clamping block (471), which is slidably connected inside the fixing sleeve (41). A wear-resistant ring (472) is connected to the surface of the sensor probe (2). The inner side of the clamping block (471) is slidably engaged with the surface of the wear-resistant ring (472). A screw (473) is threadedly connected to the surface of the fixing sleeve (41). One end of the screw (473) near the clamping block (471) is movably connected inside the clamping block (471).

7. The eddy current laser combined thickness gauge according to claim 6, characterized in that: The inner side of the clamping block (471) is movably embedded with a ball (6), which slides in contact with the surface of the wear ring (472).

8. The eddy current laser combined thickness gauge according to claim 2, characterized in that: It also includes a cleaning component (5), which is set at the bottom of the moving stage (31) to clean the dust adhering to the surface of the metal substrate during the movement of the moving stage (31) so that the dust will not affect the accuracy of the sensor probe (2) when measuring thickness; the cleaning component (5) includes a cleaning groove (51), which is opened on the rear side of the bottom of the moving stage (31), and a drive rod (52) is movably connected inside the cleaning groove (51). A cleaning brush sleeve (53) is connected to the surface of the drive rod (52), and a cleaning scraper (54) is connected to the rear side of the inner wall of the cleaning groove (51). The surface of the drive rod (52) is connected to the transmission rod (32) through a linkage (55).

9. The eddy current laser combined thickness gauge according to claim 8, characterized in that: The linkage (55) includes a gear one (551), which is connected to the surface of the transmission rod (32). A gear two (552) is fixedly installed on the surface of the drive rod (52), and the gear one (551) and the gear two (552) mesh with each other.

10. The eddy current laser combined thickness gauge according to claim 1, characterized in that: The top of the mobile station (31) is provided with a battery slot (7) for storing batteries for use during movement.

Images