An ablative thickness sensor of a multilayer structure

Abstract

The application relates to an ablative thickness sensor with a multilayer structure, belonging to the field of thickness sensors, which comprises a first fixed plate, a second fixed plate fixedly connected to the first fixed plate, an adjusting assembly installed on the second fixed plate, a moving groove formed in the second fixed plate, a movable block slidingly installed in the moving groove, a rubber block fixedly connected to the movable block, a first connecting rod fixedly connected to the rubber block, a third supporting plate fixedly arranged on the first connecting rod, a threaded sleeve screwedly arranged in the middle of the third supporting plate, a measuring head rotatably arranged on the threaded sleeve, an electric wire connected to the measuring head, and a laser thickness gauge connected to the electric wire. The application solves the problems that the existing ablative thickness sensor cannot guarantee that the measuring device and the ablative layer are perpendicular to each other, and cannot adaptively adjust the angle of the measuring equipment according to the bending degree of the measuring area.

Description

TECHNICAL FIELD

[0001] The present application relates to a multi-layer structure ablation thickness sensor, belonging to the field of thickness sensors. BACKGROUND

[0002] The ablation thickness sensor is a sensor for measuring and monitoring the thickness change in the ablation (or corrosion) process of the material surface. Ablation phenomenon usually occurs on the surface of materials under high temperature, high speed fluid or laser irradiation, which is often used in industrial fields, and the ablation process directly affects the durability, structural safety and service life of the material. Therefore, real-time monitoring of the ablation thickness change of the material can effectively evaluate and predict the use state of the material, and timely maintenance measures can be taken. The existing ablation thickness sensor still has some defects.

[0003] For example, the invention patent with publication number CN106871774B discloses a composite sensor for measuring ablation thickness and ablation layer temperature, which adopts a relatively thin thermocouple wire wound on a wire core processed by the measured heat-resistant material. The wire core wound with the thermocouple wire is subjected to a gluing treatment, and after the treatment, it is bonded with a sleeve also processed by the heat-resistant material, and a signal output is performed by using a switching circuit. The sensor body parts of the present application are all processed by heat-resistant materials, and when used, they are installed in a large area of measured heat-resistant material, so that the ablation process can be synchronized with the measured material to ensure the most real measurement of the ablation amount of the heat-resistant layer, and eliminate the measurement error caused by material differences; the sensor can measure the temperature of the ablation carbonized layer while measuring the ablation thickness, and realize the measurement of two thermal parameters. The above device can measure the ablation amount of the heat-resistant layer, but when used, it cannot guarantee that the measuring device and the ablation layer are perpendicular to each other, and the existing sensor cannot adaptively adjust the angle of the measuring equipment according to the bending degree of the measurement area to ensure the accuracy of the results.

[0004] Therefore, we improve it and propose a multi-layer structure ablation thickness sensor. SUMMARY

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

[0006] (II) Technical scheme

[0007] In order to achieve the above-mentioned purpose of the application, the application provides a multi-layer structure ablation thickness sensor, which comprises a first fixed plate, a second fixed plate fixedly connected to the first fixed plate, an adjusting assembly installed on the second fixed plate, a moving groove formed in the second fixed plate, a movable block slidingly installed in the moving groove, a rubber block fixedly connected to the movable block, a first connecting rod fixedly connected to the rubber block, a third supporting plate fixedly arranged on the first connecting rod, a threaded sleeve threadedly installed in the middle of the third supporting plate, a measuring head rotatably installed on the threaded sleeve, an electric wire connected to the measuring head, a laser thickness gauge connected to the electric wire, and a fixed connection between the laser thickness gauge and the third supporting plate.

[0008] Among them, the first fixed plate and the second fixed plate are both provided with triangular notches, and the triangular notches are equidistantly distributed on the first fixed plate and the second fixed plate.

[0009] Among them, the adjusting assembly comprises a first supporting plate and a second supporting plate fixedly connected to the second fixed plate, a first connecting plate rotatably installed on the first supporting plate, a second connecting plate rotatably installed on the first connecting plate, and a third connecting plate slidingly installed in the second connecting plate, and the third connecting plate and the first connecting plate are fixedly connected.

[0010] Among them, the second connecting plate is fixedly provided with a first connecting block, the first connecting plate is fixedly provided with a second connecting block, a screw rod is rotatably installed on the first connecting block, and the screw rod and the second connecting block are threadedly connected.

[0011] Among them, the triangular notches divide the middle of the first fixed plate into a plurality of first connecting plates, one end of each first connecting plate is connected, and the other end has a gap, the triangular notches divide the middle of the second fixed plate into a plurality of second connecting plates, and an elastic band is fixedly connected between adjacent two second connecting plates.

[0012] Among them, the rubber block is provided with a groove on both sides, the groove is fixedly connected with a first spring, and the movable block, the rubber block, the first connecting rod and the third supporting plate are fixedly connected as a whole.

[0013] Among them, the telescopic assembly comprises a movable rod penetratingly arranged in the third supporting plate, a ball rotatably installed on the movable rod, a lap plate fixedly arranged on the side of the movable rod away from the ball, an electric push rod fixedly arranged on the third supporting plate, a fixed connection between the electric push rod and the lap plate, a spline shaft fixedly arranged on the lap plate, a key connection between the spline shaft and the measuring head, and a fixed connection of the movable rod, the lap plate and the spline shaft as a whole.

[0014] The measuring head is rotatably mounted with a connecting block, and the connecting block is rotatably connected to the threaded sleeve. The threaded sleeve is provided with protruding rods evenly distributed along its circumference.

[0015] The connecting assembly includes a first gear fixedly connected to a threaded sleeve, a second gear meshing with the side of the first gear, a rotatable connection between the second gear and a third support plate, a connecting rod keyed inside the second gear, a second spring sleeved on the outside of the connecting rod, a fixed plate fixedly connected to the connecting rod, a cleaning block fixedly connected to the fixed plate, and a through hole on the cleaning block.

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

[0017] (III) Beneficial Effects

[0018] The multilayer ablation thickness sensor provided by this invention has the following advantages:

[0019] 1. By setting a first fixed plate, a second fixed plate, and a triangular notch, the overall support angle of the device can be adjusted. The device can adjust the angle of the first fixed plate and the second fixed plate to adapt to the ablation layer thickness measurement of plates with different bending degrees, thereby enhancing the applicability of the device and solving the problem that existing ablation thickness sensors cannot adapt to the measurement of plates with different bending degrees.

[0020] 2. By adjusting the screw, the distance between the first and second connecting plates can be changed during the rotation of the screw, and the first and second connecting plates can be kept in a fixed state after rotation, which enhances the overall stability of the device. Since the moving groove on the device runs from one end of the second fixed plate to the other end, when the movable block moves in the moving groove, it can restrict the movement trajectory of the third support plate and the measuring head, so that the movement trajectory of the measuring head always keeps in contact with the plate, thereby improving the accuracy of the device measurement. This solves the problem that the existing ablation thickness sensor cannot guarantee that the measuring device and the ablation layer are perpendicular to each other. This device has the advantage of higher accuracy.

[0021] 3. By using telescopic and connecting components, the device adaptively adjusts the vertical distance between the measuring head and the ablation area according to the thickness of the ablation layer, ensuring the measurement effect of the device. The connecting component on the device can rotate the second gear via the first gear during the screwing in or out of the threaded sleeve. Since the second gear is keyed to the connecting rod, it also drives the connecting rod, the fixed plate, and the cleaning block to rotate. During the rotation of the cleaning block, the contact state with the measuring head is 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, it protects the measuring head when not in use. When the cleaning block continues to rotate, it also cleans the measuring head. Furthermore, under the action of the second spring, as the threaded sleeve continues to screw in, the cleaning block moves synchronously with the threaded sleeve while maintaining its cleaning and protective functions, thereby enhancing the functionality and ease of use of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A;

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

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B;

[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 Enlarged schematic diagram of the structure at point C;

[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 Enlarged schematic diagram of the structure at point D;

[0031] Figure 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] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point E;

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

[0034] Figure 12 for Figure 11 Enlarged schematic diagram of the structure at point F;

[0035] Figure 13 for Figure 11 Enlarged schematic diagram of the structure at point G;

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

[0037] Figure 15 for Figure 14 Enlarged schematic diagram of the structure at point H.

[0038] Reference numerals: 1. First fixing plate; 2. Second fixing plate; 3. Adjustment component; 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; 308. Second connecting block; 4. Moving 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; 4. Third support plate; 15. Telescopic assembly; 1501. Movable rod; 1502. Sphere; 1503. Overlap plate; 1504. Electric push rod; 1505. Spline rod; 16. Threaded sleeve; 17. Protruding rod; 18. Measuring head; 19. Laser thickness gauge; 20. Wire; 21. Connecting assembly; 2101. First gear; 2102. Second gear; 2103. Connecting rod; 2104. Second spring; 2105. Fixed plate; 2106. Cleaning block; 2107. Through hole; 22. Connecting block. Detailed Implementation

[0039] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0040] Example 1:

[0041] like Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, this embodiment proposes a multi-layer ablation thickness sensor, including a first fixed plate 1, a second fixed plate 2 fixedly connected to the first fixed plate 1, an adjustment component 3 installed on the second fixed plate 2, the adjustment component 3 being able to remain fixed after the second fixed plate 2 is adjusted in angle, ensuring the overall stability of the device, a moving groove 4 is provided 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, and a third support plate 14 is fixedly provided on the first connecting rod 13, the moving groove 4 allows the movable block 9 to slide on the second fixed plate 2, when the movable block 9 moves to the bending point of the second fixed plate 2, the rubber block 10 can provide a supporting effect, and a threaded sleeve 1 is installed in the middle thread of the third support plate 14. 6. A measuring head 18 is rotatably mounted on the threaded sleeve 16. A wire 20 is connected to the measuring head 18, and a laser thickness gauge 19 is connected to the wire 20. The laser thickness gauge 19 is fixedly connected to the third support plate 14. The laser thickness gauge 19 is connected to the measuring head 18 through the 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 measurement. A telescopic component 15 is installed on the third support plate 14, and a connecting component 21 is installed 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 perform cleaning and protection functions for the measuring head 18, ensuring the safety of the device during use.

[0042] Example 2:

[0043] The solution in Example 1 will be further described below with reference to its specific working method.

[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in a preferred embodiment, based on the above method, a triangular notch 5 is further provided on both the first fixing plate 1 and the second fixing plate 2. The triangular notches 5 are equidistantly distributed on both the first fixing plate 1 and the second fixing plate 2. The equidistantly distributed triangular notches 5 facilitate subsequent bending of the middle position of the second fixing plate 2 and the first fixing plate 1, thereby adapting to the ablation layer thickness measurement work of plates with different bending angles.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the adjusting component 3 further includes a first support plate 301 and a second support plate 302 fixedly connected to the second fixed plate 2. A first connecting plate 303 is rotatably mounted on the first support plate 301, and a second connecting plate 304 is rotatably mounted on the first connecting plate 303. A third connecting plate 305 is slidably mounted inside the second connecting plate 304. 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 while the first connecting plate 303 remains 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, thereby enabling the device to 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, in a preferred embodiment, based on the above method, a first connecting block 306 is fixedly disposed on the second connecting plate 304, a second connecting block 308 is fixedly disposed on the first connecting plate 303, and a screw 307 is rotatably mounted on the first connecting block 306. The screw 307 and the second connecting block 308 are connected by a thread. When the screw 307 rotates, it will screw into or out of the second connecting block 308, thereby enabling the device to 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, in a preferred embodiment, based on the above method, the triangular notch 5 further divides the middle of the first fixing plate 1 into multiple first connecting plates 7, one end of which is connected and the other end has a gap. The triangular notch 5 divides the middle of the second fixing 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 repositioning of the two adjacent second connecting plates 8, ensuring the durability of the device. The triangular notch 5 makes the second fixing plate 2 easy to be bent.

[0048] likeFigure 12 As shown, in a preferred embodiment, based on the above method, further, grooves 11 are provided on both sides of the rubber block 10, and a 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 to form 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, ensuring 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 Figure 13 As shown, in a preferred embodiment, based on the above method, the telescopic component 15 further includes a movable rod 1501 that penetrates the third support plate 14. A ball 1502 is rotatably mounted on the movable rod 1501. An overlapping plate 1503 is fixedly disposed on the side of the movable rod 1501 away from the ball 1502. An electric push rod 1504 is fixedly disposed on the third support plate 14. The electric push rod 1504 and the overlapping plate 1503 are fixedly connected. A spline rod 1505 is fixedly disposed on the overlapping plate 1503. The spline rod 1505 and the measuring head 18 are keyed together. The movable rod 1501, the overlapping plate 1503, and the spline rod 1505 are fixedly connected as an integral structure. The entire device consists of... Figure 1 When the 90° bend is transformed into a 180° horizontal bend, the thickness of the ablation layer of the flat plate can be measured. The electric push rod 1504 is shortened, and the overlapping plate 1503 allows the movable rod 1501 and the spline rod 1505 to move synchronously. The ball 1502 on the movable rod 1501 can abut against the plate and roll. The spline rod 1505 keeps the measuring head 18 from rotating axially, thus ensuring the stability during thickness measurement.

[0050] like Figure 10 As shown, in a preferred embodiment, based on the above method, a connecting block 22 is rotatably mounted on the measuring head 18. The connecting block 22 is rotatably connected to the threaded sleeve 16. The threaded sleeve 16 is provided with protruding rods 17 evenly distributed in the circumferential direction. The purpose of providing the protruding rods 17 is to make the threaded sleeve 16 easier to rotate. The rotatably mounted connecting block 22 and the threaded sleeve 16 ensure that the axial distance between the threaded sleeve 16 and the connecting block 22 is always consistent, so as to realize the real-time cleaning function of the measuring head 18.

[0051] like Figure 9 , Figure 10 , Figure 11 and Figure 13As shown, in a preferred embodiment, based on the above method, the connecting assembly 21 further includes a first gear 2101 fixedly connected to the threaded sleeve 16, a second gear 2102 meshing with the side of the first gear 2101, the second gear 2102 being rotatably connected to the third support plate 14, a connecting rod 2103 keyed inside the second gear 2102, a second spring 2104 sleeved on the outside of the connecting rod 2103, a fixed disk 2105 fixedly connected to the connecting rod 2103, a cleaning block 2106 fixedly connected to the fixed disk 2105, and a through hole 2107 on the cleaning block 2106. When the threaded sleeve 16 rotates, it causes the first gear 2101 to rotate, which in turn drives the second gear 2102 to rotate. The second gear 2102 can drive the connecting rod 2103, the fixed disk 2105, and the cleaning block 2106 to rotate. Figure 6 As shown, when the fixed disk 2105 and the cleaning block 2106 rotate, the cleaning block 2106 can perform cleaning or protection functions. When the thickness measurement function is required, the position of the through hole 2107 can be adjusted, which enhances the convenience of using the device.

[0052] like Figure 6 As shown, in a preferred embodiment, based on the above method, the through holes 2107 are further evenly distributed along the circumference of the cleaning block 2106. The cleaning block 2106 is adapted to abut against the measuring head 18 and rotate 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 the abutment state with the measuring head 18, thereby ensuring the cleaning effect of the device.

[0053] Example 3:

[0054] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0055] Specifically, when using this multi-layered ablation thickness sensor: (e.g.) 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 adhere to the plate, keeping the ablated area located between two adjacent sets of the first fixing plates 1 and the second fixing plates 2. When it is necessary to test the ablated layer of the bent plate, 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 done according to... Figure 1The bending angle is adjusted by rotating the screw 307 on the adjusting assembly 3. When the screw 307 rotates, it will screw in or out of the second connecting block 308, thereby allowing the device to 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, 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 and the other end has a gap. The triangular notch 5 also divides the middle of the second fixed plate 2 into multiple second connecting plates 8. The multiple equidistantly distributed triangular notches 5 make the second fixed plate 2 easier to bend. The elastic band 6 between adjacent second connecting plates 8 ensures that the angle of the device remains stable after adjustment. The elastic band 6 can reset adjacent second connecting plates 8. The moving groove 4, extending from one end of the second fixed plate 2 to the other end, works with the movable block 9 to adjust the front and rear positions of the rubber block 10, the first connecting rod 13, and the third support plate 14. When the third support plate 14 moves, the central axis of the measuring head 18 on the third support plate 14 remains perpendicular to the ablation layer, ensuring the accuracy of the test results. When the movable block 9 moves to the bending position of the second fixed plate 2, as... Figure 1 , Figure 2 , Figure 11 and Figure 12 As shown, the first spring 12 in the groove 11 supports the rubber block 10, ensuring that the angle of the first connecting rod 13 matches the overall bending angle of the device. This allows the device to keep the measuring head 18 perpendicular to the ablation layer during measurement. The laser thickness gauge 19 is connected to the measuring head 18 via the wire 20. When the second fixing plate 2 is... Figure 1 When the 90° vertical position is changed to the 180° horizontal position, the thickness of the ablation 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. The overlapping 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, thus ensuring the stability during thickness measurement.

[0057] like Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 13 , Figure 14 and Figure 15As shown, the device can rotate the threaded sleeve 16 by turning the protruding rod 17. During the process of screwing the threaded sleeve 16 in or out, it drives the first gear 2101 to rotate. The first gear 2101 can drive the second gear 2102 to rotate. Since the second gear 2102 is keyed to the connecting rod 2103, when the second gear 2102 rotates, it drives the connecting rod 2103, the fixed disk 2105, and the cleaning block 2106 to rotate synchronously. During the rotation of the cleaning block 2106, it can drive the intermittent switching with the measuring head 18. There are three contact states in total. The first state 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 state is when the cleaning block 2106 blocks the measuring head 18, which can protect the measuring head 18 when the device is not in use. The third state is when the cleaning block 2106 rotates continuously, under the tension of the second spring 2104, the cleaning block 2106 always remains in contact with the measuring head 18, thereby realizing the cleaning function of the measuring head 18.

[0058] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A multi-layer ablation thickness sensor, comprising a first fixing plate (1), characterized in that, 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). 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 support plate (14) is fixedly installed on the first connecting rod (13). A threaded sleeve (16) is installed in the middle thread of the third support plate (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) and the third support plate (14) are fixedly connected. A telescopic component (15) is installed on the third support plate (14). A connecting component (21) is installed on the threaded sleeve (16). The adjustment assembly (3) includes a first support plate (301) and a second support plate (302) fixedly connected to the second fixed plate (2). A first connecting plate (303) is rotatably mounted on the first support plate (301). A second connecting plate (304) is rotatably mounted on the first connecting plate (303). A third connecting plate (305) is slidably mounted inside the second connecting plate (304). The third connecting plate (305) and the first connecting plate (303) are fixedly connected. A first connecting block (306) is fixedly disposed on the second connecting plate (304), and a second connecting block (308) is fixedly disposed on the first connecting plate (303). A screw (307) is rotatably mounted on the first connecting block (306), and the screw (307) and the second connecting block (308) are connected by a thread.

2. The ablation thickness sensor with a multilayer structure according to claim 1, characterized in that, Both the first fixing plate (1) and the second fixing plate (2) have triangular notches (5), and the triangular notches (5) are evenly distributed on the first fixing plate (1) and the second fixing plate (2).

3. The ablation thickness sensor with a multilayer structure according to claim 2, characterized in that, The triangular notch (5) divides the middle of the first fixing plate (1) into multiple first connecting plates (7) with one end connected and the other end having a gap. The triangular notch (5) divides the middle of the second fixing plate (2) into multiple second connecting plates (8). An elastic band (6) is fixedly connected between two adjacent second connecting plates (8).

4. The ablation thickness sensor with a multilayer structure according to claim 1, characterized in that, The rubber block (10) has grooves (11) on both sides, and a 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.

5. The ablation thickness sensor with a multilayer structure according to claim 1, characterized in that, The telescopic assembly (15) includes a movable rod (1501) that passes through the third support plate (14). A ball (1502) is rotatably mounted on the movable rod (1501). An overlapping plate (1503) is fixedly mounted on the side of the movable rod (1501) away from the ball (1502). An electric push rod (1504) is fixedly mounted on the third support plate (14). The electric push rod (1504) and the overlapping plate (1503) are fixedly connected. A spline rod (1505) is fixedly mounted on the overlapping plate (1503). The spline rod (1505) and the measuring head (18) are keyed together. The movable rod (1501), the overlapping plate (1503), and the spline rod (1505) are fixedly connected as an integral structure.

6. The ablation thickness sensor with a multilayer structure according to claim 1, characterized in that, A connecting block (22) is rotatably mounted on the measuring head (18). The connecting block (22) and the threaded sleeve (16) are rotatably connected. The threaded sleeve (16) is provided with protruding rods (17) evenly distributed along the circumference.

7. The ablation thickness sensor with a multilayer structure according to claim 1, characterized in that, The connecting assembly (21) includes a first gear (2101) fixedly connected to the threaded sleeve (16), a second gear (2102) meshing with the side of the first gear (2101), the second gear (2102) being rotatably connected to the third support plate (14), a connecting rod (2103) being keyed inside the second gear (2102), a second spring (2104) being sleeved on the outside of the connecting rod (2103), a fixed plate (2105) being fixedly connected to the connecting rod (2103), a cleaning block (2106) being fixedly connected to the fixed plate (2105), and a through hole (2107) being opened on the cleaning block (2106).

8. The ablation thickness sensor with a multilayer structure according to claim 7, characterized in that, The through holes (2107) are evenly distributed along the circumference of the cleaning block (2106), and the cleaning block (2106) is adapted to abut against the measuring head (18) and rotate axially when the threaded sleeve (16), the first gear (2101) and the second gear (2102) rotate.

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