Ablation thickness sensor with multilayer structure

Abstract

The invention relates to an ablation thickness sensor with a multilayer structure, and belongs to the field of thickness sensors, the ablation thickness sensor comprises a first fixing plate, the first fixing plate is fixedly connected with a second fixing plate, the second fixing plate is provided with an adjusting assembly, the second fixing plate is provided with a moving groove, the moving groove is internally provided with a moving block in a sliding manner, and the moving block is provided with an adjusting assembly. A rubber block is fixedly connected to the movable block, a first connecting rod is fixedly connected to the rubber block, a third supporting plate is fixedly arranged on the first connecting rod, a threaded pipe sleeve is installed in the middle of the third supporting plate in a threaded mode, a measuring head is rotatably installed on the threaded pipe sleeve, and a wire is connected to the measuring head. And the electric wire is connected with a laser thickness gauge. The problems that an existing ablation thickness sensor cannot ensure that a measuring device and an ablation layer are perpendicular to each other, and the angle of measuring equipment cannot be adaptively adjusted according to the bending degree of a measuring area are solved.

Description

Technical Field

[0001] The invention relates to an ablation thickness sensor with a multi-layer structure, belonging to the field of thickness sensors. Background Art

[0002] Ablation thickness sensor is a sensor used to measure and monitor the thickness change of the material surface during the ablation (or corrosion) process. Ablation usually occurs on the surface of materials under high temperature, high-speed fluid or laser irradiation. It is often used in industries and other fields. The ablation process directly affects the durability, structural safety and service life of the material. Therefore, real-time monitoring of the change in material ablation thickness can effectively evaluate and predict the use status of the material and take maintenance measures in time. Existing ablation thickness sensors still have some defects.

[0003] For example, the invention patent with the publication number CN106871774B discloses a composite sensor for measuring the ablation thickness and the temperature of the ablation layer. A relatively thin thermocouple wire is wound around a wire core made of the heat-resistant material to be measured. The wire core around the thermocouple wire is coated with glue, and then bonded to a sleeve made of the same heat-resistant material after treatment, and a signal is output using a switching circuit. The sensor body parts of the present invention are all made of heat-resistant materials. When in use, they are installed in a large area of ​​the heat-resistant material to be measured, so as to ensure that the ablation can be synchronized with the material to be measured during the ablation process, so as to measure the ablation amount of the heat-resistant layer most realistically and eliminate the measurement error caused by material differences; the sensor can measure the temperature of the ablation carbonization layer while measuring the ablation thickness, so as to achieve the measurement of two thermal parameters. Although the above device can measure the ablation amount of the heat-resistant layer, it cannot ensure that the measuring device and the ablation layer are perpendicular to each other when in use, and the existing sensor cannot adaptively adjust the angle of the measuring device according to the bending degree of the measuring area to ensure the accuracy of the result.

[0004] Therefore, we made improvements and proposed a multi-layer ablation thickness sensor. Summary of the invention

[0005] (I) The technical problem to be solved by the present invention is that the existing ablation thickness sensor cannot ensure that the measuring device and the ablation layer are perpendicular to each other, and cannot adaptively adjust the angle of the measuring device according to the bending degree of the measuring area.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned invention object, the present invention provides an ablation thickness sensor with a multi-layer structure, including a first fixed plate, a second fixed plate fixedly connected to the first fixed plate, an adjustment component installed on the second fixed plate, a movable groove is opened on the second fixed plate, a movable block is slidably installed in the movable groove, a rubber block is fixedly connected to the movable block, a first connecting rod is fixedly connected to the rubber block, a third support plate is fixedly provided on the first connecting rod, a threaded sleeve is installed on the middle thread of the third support plate, a measuring head is rotatably installed on the threaded sleeve, an electric wire is connected to the measuring head, a laser thickness gauge is connected to the electric wire, the laser thickness gauge and the third support plate are fixedly connected, a telescopic component is installed on the third support plate, and a connecting component is installed on the threaded sleeve.

[0008] Wherein, triangular notches are provided on the first fixing plate and the second fixing plate, and the triangular notches are evenly distributed on the first fixing plate and the second fixing plate.

[0009] Among them, the adjustment assembly includes a first support plate and a second support plate fixedly connected to the second fixed plate, the first support plate is rotatably mounted with a first connecting plate, the first connecting plate is rotatably mounted with a second connecting plate, a third connecting plate is slidably mounted in the second connecting plate, and the third connecting plate and the first connecting plate are fixedly connected.

[0010] The second connecting plate is fixedly provided with a first connecting block, the first connecting plate is fixedly provided with a second connecting block, the first connecting block is rotatably provided with a screw, and the screw and the second connecting block are threadedly connected.

[0011] The triangular notch divides the middle of the first fixed plate into a plurality of first connecting plates, one end of which is connected to the other end with a gap, and the triangular notch divides the middle of the second fixed plate into a plurality of second connecting plates, and elastic bands are fixedly connected between adjacent second connecting plates.

[0012] Wherein, grooves are provided on both sides of the rubber block, a first spring is fixedly connected in the groove, and the movable block, the rubber block, the first connecting rod and the third supporting plate are fixedly connected to form an integral structure.

[0013] Among them, the telescopic assembly includes a movable rod that passes through the third support plate, a sphere is rotatably mounted on the movable rod, a lap plate is fixedly arranged on the side of the movable rod away from the sphere, an electric push rod is fixedly arranged on the third support plate, the electric push rod and the lap plate are fixedly connected, a spline rod is fixedly arranged on the lap plate, the spline rod and the measuring head are key-connected, and the movable rod, the lap plate and the spline rod are fixedly connected to form an integral structure.

[0014] Wherein, a connecting block is rotatably mounted on the measuring head, the connecting block is rotatably connected to the threaded sleeve, and the threaded sleeve is evenly provided with protruding rods along the circumferential direction.

[0015] Among them, the connecting component includes a first gear fixedly connected to the threaded pipe sleeve, the side of the first gear is meshingly connected to the second gear, the second gear is rotatably connected to the third support plate, the inner key of the second gear is connected to a connecting rod, the outer side of the connecting rod is sleeved with a second spring, the connecting rod is fixedly connected to a fixing plate, the fixing plate is fixedly connected to a cleaning block, and the cleaning block is provided with a through hole.

[0016] The through holes are evenly distributed along the circumference of the cleaning block, and the cleaning block is suitable for abutting against the measuring head and axially rotating when the threaded sleeve, the first gear and the second gear rotate.

[0017] (III) Beneficial effects

[0018] The present invention provides a multi-layer ablation thickness sensor, which has the following beneficial effects:

[0019] 1. By setting the first fixed plate, the second fixed plate and the triangular notch, the function of adjusting the overall support angle of the device is realized. The device can adjust the angle of the first fixed plate and the second fixed plate to adapt to the plate with different bending degrees for measuring the ablation layer thickness, thereby enhancing the application scope of the device and solving the problem that the existing ablation thickness sensor cannot adapt to the measurement of plates with different bending degrees.

[0020] 2. By setting up the adjustment component, the spacing between the first connecting plate and the second connecting plate can be changed during the rotation of the screw, and the first connecting plate and the second connecting plate can be kept in a fixed state after the rotation, thereby enhancing the overall stability of the device. Since the movable groove on the device runs through one end of the second fixed plate to the other end of the second fixed plate, when the movable block moves in the movable groove, the moving trajectory of the third support plate and the measuring head can be limited, so that the moving trajectory of the measuring head always remains in contact with the plate, thereby improving the measurement accuracy of the device, solving the problem that the existing ablation thickness sensor cannot ensure that the measuring device and the ablation layer are perpendicular to each other, and the device has the advantage of higher accuracy.

[0021] 3. By setting the telescopic component and the connecting component, the function of adaptively adjusting the vertical distance between the measuring head and the ablation area according to the thickness of the ablation layer is realized to ensure the measuring effect of the device. The connecting component on the device can drive the second gear to rotate through the first gear during the process of screwing in or out of the threaded sleeve. Since the second gear and the connecting rod are key-connected, the second gear will also drive the connecting rod, the fixed disk and the cleaning block to rotate. During the rotation of the cleaning block, the contact state with the measuring head can be intermittently switched. When the position of the through hole corresponds to the position of the measuring head, the thickness of the ablation layer can be measured through the through hole. When the cleaning block blocks the measuring head, the measuring head can be protected when not in use. When the cleaning block continues to rotate, the measuring head can also be cleaned. Under the action of the second spring, as the threaded sleeve continues to be screwed in, the cleaning block will move synchronously with the threaded sleeve while maintaining the cleaning and protection functions, thereby enhancing the functionality of the device and the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 for Figure 1 A magnified schematic diagram of the structure at center A;

[0025] Figure 3 This is a schematic diagram of the connection structure of the first fixing plate and the second fixing plate of the present invention;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0027] Figure 5 This is a schematic diagram of the connection structure between the second fixed plate and the movable block of the present invention;

[0028] Figure 6 for Figure 5 A magnified schematic diagram of the structure at C in the middle;

[0029] Figure 7 This is a schematic diagram of the overall structure of the first fixing plate of the present invention;

[0030] Figure 8 for Figure 7 A magnified schematic diagram of the structure at D in the middle;

[0031] Fig. 9 This is a schematic diagram of the connection structure between the third support plate and the laser thickness gauge of the present invention;

[0032] Fig.10 for Fig. 9 A magnified schematic diagram of the structure at E in the middle;

[0033] Fig.11 This is a schematic diagram of the connection structure between the first connecting rod and the third supporting plate of the present invention;

[0034] Fig.12 for Fig.11 A magnified schematic diagram of the structure at F in the middle;

[0035] Fig.13 for Fig.11 A magnified schematic diagram of the structure at G in the middle;

[0036] Fig.14 This is a schematic diagram of the connection structure between the first gear and the second gear of the present invention;

[0037] Fig.15 for Fig.14 Enlarged schematic diagram of the structure at H in the figure.

[0038] Figure numerals: 1, first fixed plate; 2, second fixed plate; 3, adjustment assembly; 301, first support plate; 302, second support plate; 303, first connecting plate; 304, second connecting plate; 305, third connecting plate; 306, first connecting block; 307, screw rod; 308, second connecting block; 4, movable groove; 5, triangular notch; 6, elastic band; 7, first connecting plate; 8, second connecting plate; 9, movable block; 10, rubber block; 11, groove; 12, first spring; 13, first connecting rod; 1 4. The third support plate; 15. The telescopic component; 1501. The movable rod; 1502. The sphere; 1503. The lap plate; 1504. The electric push rod; 1505. The spline rod; 16. The threaded sleeve; 17. The protruding rod; 18. The measuring head; 19. The laser thickness gauge; 20. The electric wire; 21. The connecting component; 2101. The first gear; 2102. The second gear; 2103. The connecting rod; 2104. The second spring; 2105. The fixed disk; 2106. The cleaning block; 2107. The through hole; 22. The connecting block. DETAILED DESCRIPTION

[0039] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0040] Embodiment 1:

[0041] like Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15 As shown, this embodiment proposes an ablation thickness sensor with a multilayer structure, including a first fixed plate 1, a second fixed plate 2 is fixedly connected to the first fixed plate 1, an adjustment component 3 is installed on the second fixed plate 2, the adjustment component 3 can remain fixed after the second fixed plate 2 adjusts its angle, so as to ensure the overall stability of the device, a moving groove 4 is opened on the second fixed plate 2, a movable block 9 is slidably installed in the moving groove 4, a rubber block 10 is fixedly connected to the movable block 9, a first connecting rod 13 is fixedly connected to the rubber block 10, a third supporting plate 14 is fixedly arranged on the first connecting rod 13, the moving groove 4 is for the movable block 9 to slide on the second fixed plate 2, when the movable block 9 moves to the bending part of the second fixed plate 2, the rubber block 10 can provide a supporting effect, and a threaded sleeve 1 is installed on the middle thread of the third supporting plate 14 6. A measuring head 18 is rotatably mounted on the threaded sleeve 16, and an electric wire 20 is connected to the measuring head 18. A laser thickness gauge 19 is connected to the electric wire 20. The laser thickness gauge 19 is fixedly connected to the third support plate 14, and the laser thickness gauge 19 is connected to the measuring head 18 through the electric wire 20. As the third support plate 14 moves, the measuring head 18 can always remain perpendicular to the ablation layer, thereby ensuring the accuracy of the device measurement. A telescopic component 15 is mounted on the third support plate 14, and a connecting component 21 is mounted on the threaded sleeve 16. The telescopic component 15 and the connecting component 21 can adaptively adjust the position of the measuring head 18 according to the thickness of the ablation layer. When the threaded sleeve 16 is screwed in, the connecting component 21 can realize the cleaning and protection functions of the measuring head 18, thereby ensuring the safety of the device when in use.

[0042] Embodiment 2:

[0043] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, triangular notches 5 are provided on the first fixed plate 1 and the second fixed plate 2, and the triangular notches 5 are evenly distributed on the first fixed plate 1 and the second fixed plate 2. The evenly distributed triangular notches 5 facilitate the subsequent bending of the middle position of the second fixed plate 2 and the first fixed plate 1, thereby adapting to the measurement of the ablation layer thickness of the plates with different bending angles.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, the adjustment component 3 includes a first support plate 301 and a second support plate 302 fixedly connected to the second fixed plate 2, the first support plate 301 is rotatably mounted with a first connecting plate 303, the first connecting plate 303 is rotatably mounted with a second connecting plate 304, the second connecting plate 304 is slidably mounted with a third connecting plate 305, the third connecting plate 305 and the first connecting plate 303 are fixedly connected, when the device is in use, the second connecting plate 304 on the third connecting plate 305 is slid to keep the first connecting plate 303 stationary, at this time the first connecting plate 303 rotates on the first support plate 301, and the second connecting plate 304 rotates on the second support plate 302, so that the device can adjust the angle of the second fixed plate 2 to adapt to the use of plates with different bending angles.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, a first connecting block 306 is fixedly provided on the second connecting plate 304, a second connecting block 308 is fixedly provided on the first connecting plate 303, a screw 307 is rotatably installed on the first connecting block 306, and the screw 307 and the second connecting block 308 are threadedly connected. When the screw 307 rotates, it will be screwed in or out of the second connecting block 308, so that the device can change the distance between the first connecting plate 303 and the second connecting plate 304, so that the device remains fixed after the overall angle is adjusted.

[0047] like Figure 4 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the triangular notch 5 divides the middle of the first fixed plate 1 into multiple first connecting plates 7, one end of which is connected to the other end with a gap, and the triangular notch 5 divides the middle of the second fixed plate 2 into multiple second connecting plates 8. An elastic band 6 is fixedly connected between two adjacent second connecting plates 8. The elastic band 6 facilitates the subsequent resetting of the two adjacent second connecting plates 8, thereby ensuring the durability of the device. The triangular notch 5 makes the second fixed plate 2 easy to be bent.

[0048] like Fig.12 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, grooves 11 are opened on both sides of the rubber block 10, and the first spring 12 is fixedly connected in the groove 11. The movable block 9, the rubber block 10, the first connecting rod 13 and the third support plate 14 are fixedly connected as an integral structure to ensure the overall stability of the device. When the rubber block 10 moves to the bending position of the device, the first spring 12 in the groove 11 can play a supporting function to ensure that the angle of the first connecting rod 13 at this time can match the bending angle of the device as a whole, so that the device can remain perpendicular to the ablation layer during measurement.

[0049] like Fig.13 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the telescopic assembly 15 includes a movable rod 1501 which is arranged through the third support plate 14, and a ball 1502 is rotatably mounted on the movable rod 1501, and a lap plate 1503 is fixedly arranged on the side of the movable rod 1501 away from the ball 1502, and an electric push rod 1504 is fixedly arranged on the third support plate 14, and the electric push rod 1504 and the lap plate 1503 are fixedly connected, and a spline rod 1505 is fixedly arranged on the lap plate 1503, and the spline rod 1505 and the measuring head 18 are key-connected, and the movable rod 1501, the lap plate 1503 and the spline rod 1505 are fixedly connected to form an integral structure, and the device as a whole is composed of Figure 1 When the 90° bend in the middle is transformed into a 180° horizontal angle, the thickness of the ablated layer of the flat plate can be measured, the electric push rod 1504 is shortened, and the lap plate 1503 enables the movable rod 1501 and the spline rod 1505 to move synchronously, the ball 1502 on the movable rod 1501 can abut the plate and roll, and the spline rod 1505 keeps the measuring head 18 from rotating axially at all times, thereby ensuring stability during thickness measurement.

[0050] like Fig.10 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, a connecting block 22 is rotatably installed on the measuring head 18, and the connecting block 22 is rotatably connected to the threaded sleeve 16. The threaded sleeve 16 is evenly provided with protruding rods 17 along the circumferential direction. The purpose of providing the protruding rods 17 is to make the threaded sleeve 16 easier to rotate. The rotatably installed connecting block 22 and the threaded sleeve 16 make the axial spacing between the threaded sleeve 16 and the connecting block 22 always consistent, so as to realize the real-time cleaning function of the measuring head 18 later.

[0051] like Fig. 9 , Fig.10 , Fig.11 and Fig.13As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the connection component 21 includes a first gear 2101 fixedly connected to the threaded sleeve 16, the side of the first gear 2101 is meshingly connected with the second gear 2102, the second gear 2102 is rotatably connected to the third support plate 14, the second gear 2102 is internally keyed with a connection rod 2103, the outer side of the connection rod 2103 is sleeved with a second spring 2104, the connection rod 2103 is fixedly connected with a fixed disk 2105, the fixed disk 2105 is fixedly connected with a cleaning block 2106, the cleaning block 2106 is provided with a through hole 2107, when the threaded sleeve 16 rotates, the first gear 2101 will rotate, the first gear 2101 will drive the second gear 2102 to rotate, the second gear 2102 can drive the connection rod 2103, the fixed disk 2105 and the cleaning block 2106 to rotate, as shown in FIG. Figure 6 As shown, when the fixed disk 2105 and the cleaning block 2106 rotate, the cleaning or protection function can be achieved through the cleaning block 2106. When the thickness measurement function is required, the position of the through hole 2107 can be adjusted, thereby enhancing the convenience of the device when used.

[0052] like Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the through holes 2107 are evenly distributed along the circumference of the cleaning block 2106, and the cleaning block 2106 is suitable for abutting the measuring head 18 and rotating axially when the threaded sleeve 16, the first gear 2101 and the second gear 2102 rotate. When the threaded sleeve 16 rotates and screws in, the cleaning block 2106 can continue to rotate and maintain an abutment state with the measuring head 18, thereby ensuring the cleaning effect of the device.

[0053] Embodiment 3:

[0054] The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details:

[0055] Specifically, when the multi-layer ablation thickness sensor is used: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first fixing plate 1 and the second fixing plate 2 are used to fit with the plate, and the ablation area is kept between two adjacent groups of the first fixing plate 1 and the second fixing plate 2. When the ablation layer of the bent plate needs to be tested, the front and rear parts of the first fixing plate 1 are kept in contact with the bent part of the plate according to the bending angle of the plate. When the plate to be tested is a 90° L-shaped plate, it can be tested according to Figure 1When adjusting the bending angle, by rotating the screw 307 on the adjustment component 3, the screw 307 will be screwed in or out on the second connecting block 308 when it rotates, so that the device can change the distance between the first connecting plate 303 and the second connecting plate 304. The first connecting plate 303 rotates on the first support plate 301, and the second connecting plate 304 rotates on the second support plate 302, so that the device remains fixed after the overall angle is adjusted.

[0056] like Figure 4 and Figure 8 As shown, since the triangular notch 5 divides the middle of the first fixed plate 1 into a plurality of first connecting plates 7 with one end connected to the other end with a gap, and the triangular notch 5 divides the middle of the second fixed plate 2 into a plurality of second connecting plates 8, the second fixed plate 2 is easier to bend with the multiple triangular notches 5 distributed equidistantly, and the angle of the device is kept stable after adjustment through the elastic band 6 between the two adjacent second connecting plates 8, and the elastic band 6 can reset the two adjacent second connecting plates 8. The front and rear positions of the rubber block 10, the first connecting rod 13 and the third support plate 14 are adjusted by the movable groove 4 that runs from one end of the second fixed plate 2 to the other end of the second fixed plate 2 in cooperation with the movable block 9. When the third support plate 14 moves, the central axis of the measuring head 18 on the third support plate 14 can always remain perpendicular to the ablation layer to ensure the accuracy of the detection result. When the movable block 9 moves to the bending position of the second fixed plate 2, as shown Figure 1 , Figure 2 , Fig.11 and Fig.12 As shown, the first spring 12 in the groove 11 can support the rubber block 10, ensuring that the angle of the first connecting rod 13 can match the bending angle of the entire device, so that the device can keep the measuring head 18 perpendicular to the ablation layer during measurement, and the laser thickness gauge 19 is connected to the measuring head 18 through the wire 20. Figure 1 When the 90° vertical state is changed to the 180° horizontal state, the thickness of the ablated layer of the flat plate can be measured. By shortening the electric push rod 1504, the ball 1502 on the movable rod 1501 abuts against the plate, and the lap plate 1503 makes the movable rod 1501 and the spline rod 1505 move synchronously. The spline rod 1505 keeps the measuring head 18 from rotating axially, thereby ensuring stability during thickness measurement.

[0057] like Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 , Fig.13 , Fig.14 and Fig.15As shown, the device can rotate the threaded sleeve 16 by toggling the convex rod 17. During the process of screwing in or out of the threaded sleeve 16, the first gear 2101 is driven to rotate, and the first gear 2101 can drive the second gear 2102 to rotate. Since the second gear 2102 and the connecting rod 2103 are key-connected, the second gear 2102 drives the connecting rod 2103, the fixed plate 2105 and the cleaning block 2106 to rotate synchronously when rotating. During the rotation of the cleaning block 2106, the intermittent switching with the measuring head 18 can be driven. There are three contact states in total. The first is when the position of the through hole 2107 corresponds to the position of the measuring head 18, the thickness of the ablation layer can be measured through the through hole 2107. The second is when the cleaning block 2106 blocks the measuring head 18, the device can protect the measuring head 18 when not in use. The third is when the cleaning block 2106 continues to rotate, under the tension of the second spring 2104, the cleaning block 2106 always maintains abutment with the measuring head 18, thereby realizing the cleaning function of the measuring head 18.

[0058] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A multi-layer ablation thickness sensor, comprising a first fixing plate (1), characterized in that: The first fixing plate (1) is fixedly connected to a second fixing plate (2), an adjusting assembly (3) is installed on the second fixing plate (2), a moving groove (4) is provided on the second fixing plate (2), a movable block (9) is slidably installed in the moving groove (4), a rubber block (10) is fixedly connected to the movable block (9), a first connecting rod (13) is fixedly connected to the rubber block (10), a third supporting plate (14) is fixedly arranged on the first connecting rod (13), and the third supporting plate (14) is fixedly arranged on the third connecting rod (13). A threaded sleeve (16) is installed on the middle thread of the three support plates (14); a measuring head (18) is rotatably installed on the threaded sleeve (16); an electric wire (20) is connected to the measuring head (18); a laser thickness gauge (19) is connected to the electric wire (20); the laser thickness gauge (19) is fixedly connected to the third support plate (14); a telescopic component (15) is installed on the third support plate (14); and a connecting component (21) is installed on the threaded sleeve (16).

2. The multi-layer ablation thickness sensor according to claim 1, characterized in that: The first fixing plate (1) and the second fixing plate (2) are both provided with triangular notches (5), and the triangular notches (5) are evenly distributed at intervals on the first fixing plate (1) and the second fixing plate (2).

3. The multi-layer ablation thickness sensor according to claim 2, characterized in that: The adjustment assembly (3) comprises a first support plate (301) and a second support plate (302) fixedly connected to the second fixed plate (2); the first support plate (301) is rotatably mounted with a first connecting plate (303); the first connecting plate (303) is rotatably mounted with a second connecting plate (304); a third connecting plate (305) is slidably mounted inside the second connecting plate (304); and the third connecting plate (305) and the first connecting plate (303) are fixedly connected.

4. The multi-layer ablation thickness sensor according to claim 3, characterized in that: A first connecting block (306) is fixedly arranged on the second connecting plate (304), a second connecting block (308) is fixedly arranged on the first connecting plate (303), a screw rod (307) is rotatably mounted on the first connecting block (306), and the screw rod (307) and the second connecting block (308) are threadedly connected.

5. The multi-layer ablation thickness sensor according to claim 2, characterized in that: The triangular notch (5) divides the middle of the first fixed plate (1) into a plurality of first connecting plates (7) with one end connected and the other end having a gap, and the triangular notch (5) divides the middle of the second fixed plate (2) into a plurality of second connecting plates (8), and an elastic band (6) is fixedly connected between two adjacent second connecting plates (8).

6. The multi-layer ablation thickness sensor according to claim 1, characterized in that: Grooves (11) are provided on both sides of the rubber block (10), a first spring (12) is fixedly connected in the groove (11), and the movable block (9), the rubber block (10), the first connecting rod (13) and the third supporting plate (14) are fixedly connected to form an integral structure.

7. The multi-layer ablation thickness sensor according to claim 1, characterized in that: The telescopic assembly (15) comprises a movable rod (1501) which is arranged to pass through the third support plate (14); a sphere (1502) is rotatably mounted on the movable rod (1501); a lap plate (1503) is fixedly arranged on the side of the movable rod (1501) away from the sphere (1502); an electric push rod (1504) is fixedly arranged on the third support plate (14); the electric push rod (1504) and the lap plate (1503) are fixedly connected; a spline rod (1505) is fixedly arranged on the lap plate (1503); the spline rod (1505) and the measuring head (18) are key-connected; the movable rod (1501), the lap plate (1503) and the spline rod (1505) are fixedly connected to form an integral structure.

8. The multi-layer ablation thickness sensor according to claim 1, characterized in that: A connecting block (22) is rotatably mounted on the measuring head (18), the connecting block (22) is rotatably connected to the threaded sleeve (16), and the threaded sleeve (16) is evenly provided with protruding rods (17) along the circumferential direction.

9. The multi-layer ablation thickness sensor according to claim 1, characterized in that: The connection assembly (21) comprises a first gear (2101) fixedly connected to the threaded sleeve (16); the side of the first gear (2101) is meshingly connected to the second gear (2102); the second gear (2102) is rotatably connected to the third support plate (14); the second gear (2102) is keyed to a connection rod (2103); the outer side of the connection rod (2103) is sleeved with a second spring (2104); the connection rod (2103) is fixedly connected to a fixed disk (2105); the fixed disk (2105) is fixedly connected to a cleaning block (2106); and the cleaning block (2106) is provided with a through hole (2107).

10. The multi-layer ablation thickness sensor according to claim 9, characterized in that: The through holes (2107) are evenly distributed along the circumference of the cleaning block (2106), and the cleaning block (2106) is suitable for abutting against the measuring head (18) and rotating axially when the threaded sleeve (16), the first gear (2101) and the second gear (2102) rotate.

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