Non-contact furnace roller radial deformation online detection device

Abstract

The invention discloses a non-contact furnace roller radial deformation on-line detection device, and relates to the technical field of sensors, the non-contact furnace roller radial deformation on-line detection device comprises a central control system, a communication module, a data processing module, a display and alarm module, a data acquisition module and a plurality of pairs of displacement sensors, the non-contact furnace roller radial deformation on-line detection device comprises a case and a frame, the plurality of pairs of displacement sensors are installed in the case, all the displacement sensors are in circuit connection with the data acquisition module, the data acquisition module and the display and alarm module are respectively in circuit connection with the data processing module, the data processing module is connected with the central control system through the communication module, a heat dissipation assembly is arranged in the case, and the heat dissipation assembly is connected with the central control system through the communication module. Four damping assemblies are arranged on the frame, the communication module transmits detection data to the central control system, remote monitoring and data storage are achieved, and the central control system can analyze historical data and optimize the production process.

Description

Technical Field

[0001] The invention relates to the technical field of sensors, in particular to a non-contact online detection device for radial deformation of a furnace roller. Background Art

[0002] In the production process of stainless steel annealing furnace, the furnace roller, as a key component, is in a high-temperature, high-load working environment for a long time, and is prone to thermal deformation or mechanical deformation. The deformation of the furnace roller can cause problems such as strip deviation and surface scratches, seriously affecting product quality and production efficiency. At present, the deformation detection of the furnace roller mainly relies on offline detection methods, that is, manual measurement or disassembly inspection of the furnace roller after shutdown. However, this method cannot monitor in real time and cannot detect the deformation of the furnace roller in time during the production process, resulting in the accumulation of problems. The shutdown detection increases the production time cost, the manual measurement accuracy is low, and it is affected by the technical level of the operator. Summary of the Invention

[0003] The object of the present invention is to provide a non-contact online detection device for the radial deformation of a furnace roller, so as to solve the problems raised in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a non-contact online detection device for the radial deformation of a furnace roller, comprising a central control system, a communication module, a data processing module, a display and alarm module, a data acquisition module and several pairs of displacement sensors, including a chassis and a frame, the chassis is mounted on the frame through four electric push rods, and several pairs of displacement sensors are mounted in the chassis, all displacement sensors are connected to the data acquisition module circuit, the data acquisition module and the display and alarm module are respectively connected to the data processing module circuit, the data processing module is connected to the central control system through the communication module, a heat dissipation component is provided in the chassis, and four groups of shock absorbing components are provided on the frame, the communication module transmits the detection data to the central control system to realize remote monitoring and data storage, and the central control system can analyze historical data and optimize the production process.

[0005] Furthermore, a front baffle is provided at the front end of the frame, a rear drive assembly is provided at the rear end of the frame, a pair of half-tooth plates are rotatably installed at the bottom of the frame near the front baffle, servo motors are provided at the bottom of the pair of half-tooth plates and in the rear drive assembly, and the four groups of shock absorber assemblies are respectively installed on four servo motors.

[0006] Furthermore, a driving motor is installed in the frame, and a main gear is installed on the motor shaft of the driving motor. The main gear is arranged at the bottom of the frame, and a driven gear is also rotatably installed at the bottom of the frame. The driven gear is meshed with the main gear, and the driven gear is also meshed with two half-tooth plates. A pair of half-tooth plates are symmetrically installed, and the detection device moves along the bottom of the furnace roller arrangement direction to facilitate the detection of the deformation variable of the furnace roller for feeding steel. The control system uses the driving motor to drive the main gear to rotate, the main gear drives the driven gear to rotate, and the driven gear drives the two half-tooth plates to rotate. The rotation direction of the two half-tooth plates is the same, so the driving motor can be used to control the steering of the detection device.

[0007] Furthermore, each group of the shock-absorbing components includes a wheel hub, which is connected to the motor shaft of the servo motor. Several inner magnets are evenly distributed in a ring shape in the wheel hub. The side of the inner magnet close to the frame is the N pole, and the side of the inner magnet away from the frame is the S pole. Shock-absorbing rubber pads are provided on both sides of the wheel hub. Four servo motors drive the four wheel hubs to rotate. The wheel hubs and the shock-absorbing wheel sleeves are connected through shock-absorbing rubber pads for shock absorption. At the same time, the internal magnets attract the magnetic blocks. When the wheel hubs rotate, the shock-absorbing wheel sleeves are driven to rotate by magnetic force to drive the entire detection device to move.

[0008] Furthermore, a shock-absorbing wheel sleeve is wrapped around the outer side of the wheel hub, and the shock-absorbing wheel sleeve is connected to a shock-absorbing rubber pad. There is a gap between the inner wall of the shock-absorbing wheel sleeve and the wheel hub and the motor shaft of the servo motor. Magnetic blocks are evenly distributed in a ring shape on both sides of the shock-absorbing wheel sleeve. The number of magnetic blocks on each side is the same as the number of internal magnets. The magnetic blocks on each side are attracted to the inner magnets. Through the magnetic connection and the shock absorption of the shock-absorbing rubber pad, the rigid connection between the wheel and the frame under normal circumstances is transformed into a flexible connection, thereby increasing the stability of the frame during movement, thereby increasing the stability of the chassis, and improving the accuracy of furnace roller displacement detection.

[0009] Furthermore, three partitions are provided inside the chassis, and the three partitions separate the inside of the chassis into a lower heat dissipation cavity, a front heat dissipation cavity and a rear heat dissipation cavity. The front heat dissipation cavity and the rear heat dissipation cavity are symmetrically arranged, and each pair of displacement sensors are symmetrically arranged in the front heat dissipation cavity and the rear heat dissipation cavity. Each displacement sensor is tilted 45 degrees, and a semiconductor refrigeration plate is installed at the bottom of each displacement sensor. The semiconductor refrigeration plate passes through the front heat dissipation cavity or the rear heat dissipation cavity to the lower heat dissipation cavity. The heating ends of the semiconductor refrigeration plates are located in the lower heat dissipation cavity. Filter plates are provided on both sides of the chassis. During detection, the electric push rod lifts the chassis upward until the chassis is close to the furnace roller to be detected. The temperature of the furnace roller is higher during steel feeding. The displacement sensor is made of high-temperature resistant materials to adapt to the high-temperature environment around the furnace roller. At the same time, the semiconductor refrigeration plate is powered on for cooling, and the cooling end reduces the temperature in the front heat dissipation cavity and the rear heat dissipation cavity to protect the displacement sensor from being damaged by high temperature. The displacement sensor detects the radial runout data of the furnace roller when it rotates in real time to obtain the deformation data of the furnace roller. The data acquisition module filters and amplifies the sensor signal to eliminate noise interference. The data processing module calculates the deformation of the furnace roller through an algorithm and compares it with the preset deformation threshold. When the deformation exceeds the set threshold, the display and alarm module will send an audible and visual alarm signal, and the detection results are displayed in real time on the operation interface for the operator's reference.

[0010] Furthermore, a skylight is provided above the chassis at the position corresponding to each displacement sensor, and low-pass glass is provided in the skylight. The heat dissipation assembly includes several heat dissipation plates and several ion wind generators. Several of the heat dissipation plates are located in the lower heat dissipation cavity, and each of the heat dissipation plates is in contact with two symmetrically arranged semiconductor refrigeration plates.

[0011] Furthermore, several of the ion wind generators are symmetrically installed in the front heat dissipation cavity and the rear heat dissipation cavity, and each ion wind generator includes a positive ring and a negative ring. The positive ring is serrated on the side facing the negative ring, and the serrations of the several positive rings in the front heat dissipation cavity are in the same direction. When the positive ring is connected to the positive pole of the power supply and the negative ring is connected to the negative pole of the power supply, an electric field is formed between the positive ring and the negative ring, and the air around the positive ring is ionized and quickly attracted by the negative ring. The ionized air pushes the air from the positive ring to the negative ring through collision and friction. When the air inside the chassis flows, the air conducted from the upper surface of the chassis can be Heat is dissipated, and the filter plate effectively blocks external dust from entering the chassis. Air flows in from one end of the chassis and flows out from the other end. Part of the flowing air will pass through the lower heat dissipation cavity. The heat dissipation plate in the lower heat dissipation cavity conducts and dissipates the heat from the heating end of the semiconductor refrigeration plate. The air flowing in the lower heat dissipation cavity dissipates the heat to the heat dissipation plate. By setting up the heat dissipation component, it is ensured that the displacement sensor in the chassis works at a suitable temperature to avoid damage by high temperature. The ion wind component has no moving parts during the heat dissipation process. Compared with traditional fan cooling, it can avoid vibration of the chassis and further improve the detection accuracy of the equipment.

[0012] Compared with the prior art, the present invention has the following beneficial effects: Through the magnetic connection and the shock absorption of the shock-absorbing rubber pad, the rigid connection between the wheel and the frame in normal circumstances is transformed into a flexible connection, which increases the stability of the frame during movement, thereby increasing the stability of the chassis and improving the accuracy of furnace roller displacement detection; the semiconductor refrigeration plate is powered on for cooling, and the cooling end reduces the temperature in the front and rear heat dissipation cavities to protect the displacement sensor from damage due to high temperature. The ion wind component has no moving parts during the heat dissipation process. Compared with traditional fan cooling, it can avoid chassis vibration and further improve the detection accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the appearance of the present invention Figure 1 ; Figure 2 This is a schematic diagram of the appearance of the present invention Figure 2 ; Figure 3 The structure inside the chassis of the present invention is schematically shown Figure 1 ; Figure 4 The structure inside the chassis of the present invention is schematically shown Figure 2 ; Figure 5 The structure inside the chassis of the present invention is schematically shown Figure 3 ; Figure 6 It is a structural schematic diagram of the bottom of the frame of the present invention; Figure 7It is a structural schematic diagram of the shock absorbing assembly of the present invention.

[0014] In the figure: 1. Furnace roller; 2. Chassis; 3. Frame; 4. Electric push rod; 5. Low-pass glass; 6. Semiconductor refrigeration plate; 7. Displacement sensor; 8. Positive ring; 9. Negative ring; 10. Heat sink; 11. Rear drive assembly; 12. Front baffle; 13. Main gear; 14. Driven gear; 15. Half-tooth plate; 16. Servo motor; 17. Wheel hub; 18. Inner magnet; 19. Shock-absorbing rubber pad; 20. Shock-absorbing wheel sleeve; 21. Magnetic block; 22. Filter plate. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example: Figure 1-Figure 7 As shown, the present invention provides a technical solution, a non-contact online detection device for the radial deformation of a furnace roller, including a central control system, a communication module, a data processing module, a display and alarm module, a data acquisition module and several pairs of displacement sensors 7, including a chassis 2 and a frame 3, the chassis 2 is installed on the frame 3 through four electric push rods 4, and several pairs of displacement sensors 7 are installed in the chassis 2. All displacement sensors 7 are connected to the data acquisition module circuit, the data acquisition module and the display and alarm module are respectively connected to the data processing module circuit, the data processing module is connected to the central control system through the communication module, a heat dissipation component is provided in the chassis 2, and four groups of shock absorbing components are provided on the frame 3. The communication module transmits the detection data to the central control system to realize remote monitoring and data storage. The central control system can analyze historical data and optimize the production process.

[0017] The front end of the frame 3 is provided with a front baffle 12, and the rear end of the frame 3 is provided with a rear drive assembly 11. A pair of half-toothed plates 15 are rotatably installed at the bottom of the frame 3 near the front baffle 12. A servo motor 16 is provided at the bottom of the pair of half-toothed plates 15 and in the rear drive assembly 11. Four sets of shock absorber assemblies are respectively installed on four servo motors 16. A drive motor (not shown) is installed in the frame 3. A main gear 13 is installed on the motor shaft of the drive motor. The main gear 13 is provided at the bottom of the frame 3. A driven gear is also rotatably installed at the bottom of the frame 3. Gear 14, the driven gear 14 is engaged with the main gear 13, and the driven gear 14 is also engaged with two half-tooth plates 15. A pair of half-tooth plates 15 are symmetrically installed, and the detection device moves along the bottom of the arrangement direction of the furnace roller 1 to facilitate the detection of the deformation amount of the furnace roller 1 for feeding steel. The control system uses a drive motor to drive the main gear 13 to rotate, and the main gear 13 drives the driven gear 14 to rotate, and the driven gear 14 drives the two half-tooth plates 15 to rotate. The rotation direction of the two half-tooth plates 15 is the same, so the drive motor can be used to control the direction of the detection device.

[0018] Each set of shock-absorbing components includes a wheel hub 17, which is connected to the motor shaft of the servo motor 16. Several inner magnets 18 are evenly distributed in a ring shape in the wheel hub 17. The side of the inner magnet 18 close to the frame 3 is the N pole, and the side of the inner magnet 18 away from the frame 3 is the S pole. Shock-absorbing rubber pads 19 are provided on both sides of the wheel hub 17. A shock-absorbing wheel sleeve 20 is provided on the outer side of the wheel hub 17. The shock-absorbing wheel sleeve 20 is connected to the shock-absorbing rubber pad 19. There is a gap between the inner wall of the shock-absorbing wheel sleeve 20 and the motor shaft of the servo motor 16. Magnetic blocks 21 are evenly distributed in a ring shape on both sides of the shock-absorbing wheel sleeve 20. The number of magnetic blocks 21 on each side is the same as that of the inner magnet 1 8 are the same, the magnetic blocks 21 on each side attract each other with the inner magnet 18, the four servo motors 16 drive the four wheel hubs 17 to rotate, the wheel hubs 17 and the shock-absorbing wheel sleeves 20 are connected by the shock-absorbing rubber pads 19 for shock absorption, and at the same time the inner magnets 18 attract the magnetic blocks 21, and when the wheel hubs 17 rotate, the shock-absorbing wheel sleeves 20 are driven to rotate by the magnetic force to drive the entire detection device to move, and the rigid connection between the wheel and the frame 3 under normal circumstances is transformed into a flexible connection through the magnetic connection and the shock absorption of the shock-absorbing rubber pads 19, thereby increasing the stability of the frame 3 during movement, thereby increasing the stability of the chassis 2 and improving the accuracy of the displacement detection of the furnace roller 1.

[0019] The interior of the chassis 2 is provided with three partitions, which separate the interior of the chassis 2 into a lower heat dissipation cavity, a front heat dissipation cavity and a rear heat dissipation cavity. The front heat dissipation cavity and the rear heat dissipation cavity are symmetrically arranged. Each pair of displacement sensors 7 is symmetrically arranged in the front heat dissipation cavity and the rear heat dissipation cavity. Each displacement sensor 7 is tilted 45 degrees. A semiconductor refrigeration plate 6 is installed at the bottom of each displacement sensor 7. The semiconductor refrigeration plate 6 passes through the front heat dissipation cavity or the rear heat dissipation cavity to the lower heat dissipation cavity. The heating ends of the semiconductor refrigeration plates 6 are both located in the lower heat dissipation cavity. Filter plates 22 are provided on both sides of the chassis 2. During detection, the electric push rod 4 lifts the chassis 2 upward until the chassis 2 is close to the furnace roller 1 to be detected. The temperature of the furnace roller 1 in the steel feeding is high, and the displacement The sensor 7 is made of high-temperature resistant material to adapt to the high-temperature environment around the furnace roller 1. At the same time, the semiconductor refrigeration plate 6 is powered on for cooling, and the cooling end reduces the temperature in the front heat dissipation cavity and the rear heat dissipation cavity to protect the displacement sensor 7 from being damaged by high temperature. The displacement sensor 7 detects the radial runout data of the furnace roller 1 when it rotates in real time to obtain the deformation data of the furnace roller 1. The data acquisition module filters and amplifies the sensor signal to eliminate noise interference. The data processing module calculates the deformation of the furnace roller 1 through an algorithm and compares it with the preset deformation threshold. When the deformation exceeds the set threshold, the display and alarm module will send an audible and visual alarm signal, and the detection results are displayed in real time on the operation interface for the operator's reference.

[0020] A skylight is provided above the chassis 2 at the position corresponding to each displacement sensor 7, and a low-pass glass 5 is provided in the skylight. The heat dissipation assembly includes several heat dissipation plates 10 and several ion wind generators. The several heat dissipation plates 10 are all located in the lower heat dissipation cavity, and each heat dissipation plate 10 is in contact with two symmetrically arranged semiconductor refrigeration plates 6. Several ion wind generators are symmetrically installed in the front heat dissipation cavity and the rear heat dissipation cavity. Each ion wind generator includes a positive ring 8 and a negative ring 9. The positive ring 8 is serrated on the side facing the negative ring 9. The serration directions of the several positive rings 8 located in the front heat dissipation cavity are the same. When the positive ring 8 is connected to the positive pole of the power supply and the negative ring 9 is connected to the negative pole of the power supply, an electric field is formed between the positive ring 8 and the negative ring 9, and the air around the positive ring 8 is ionized and quickly attracted by the negative ring 9. The ionized air The air is pushed from the positive electrode ring 8 to the negative electrode ring 9 through collision and friction. When the air inside the chassis 2 flows, the heat conducted from the upper surface of the chassis 2 can be dissipated. The filter plate 22 effectively blocks external dust from entering the chassis 2. The air flows in from one end of the chassis 2 and flows out from the other end. Part of the flowing air will pass through the lower heat dissipation cavity. The heat dissipation plate 10 in the lower heat dissipation cavity conducts and dissipates the heat from the heating end of the semiconductor refrigeration plate 6. The air flowing in the lower heat dissipation cavity dissipates the heat to the heat dissipation plate 10. By setting a heat dissipation component, it is ensured that the displacement sensor 7 in the chassis 2 operates at a suitable temperature to avoid damage from high temperature. The ion wind component has no moving parts during the heat dissipation process. Compared with traditional fan cooling, it can avoid vibration of the chassis 2, further improving the detection accuracy of the equipment.

[0021] The working principle of the present invention is as follows: the communication module transmits the detection data to the central control system to realize remote monitoring and data storage. The central control system can analyze the historical data and optimize the production process. The detection device moves along the bottom of the arrangement direction of the furnace roller 1 to facilitate the detection of the deformation of the furnace roller 1 for feeding steel. The control system uses a drive motor to drive the main gear 13 to rotate, the main gear 13 drives the driven gear 14 to rotate, and the driven gear 14 drives the two half-tooth plates 15 to rotate. The rotation direction of the two half-tooth plates 15 is the same, so the drive motor can be used to control the direction of the detection device.

[0022] Four servo motors 16 drive four wheel hubs 17 to rotate. The wheel hubs 17 and the shock-absorbing wheel sleeves 20 are connected through shock-absorbing rubber pads 19 for shock absorption. At the same time, the internal magnets 18 attract the magnetic blocks 21. When the wheel hubs 17 rotate, the shock-absorbing wheel sleeves 20 are driven to rotate by magnetic force to drive the entire detection device to move. Through the magnetic connection and the shock absorption of the shock-absorbing rubber pads 19, the rigid connection between the wheels and the frame 3 under normal circumstances is transformed into a flexible connection, thereby increasing the stability of the frame 3 during movement, thereby increasing the stability of the chassis 2 and improving the accuracy of the displacement detection of the furnace roller 1.

[0023] During the inspection, the electric push rod 4 lifts the chassis 2 upward until the chassis 2 is close to the furnace roller 1 to be inspected. The temperature of the furnace roller 1 during steel feeding is relatively high. The displacement sensor 7 is made of high-temperature resistant material to adapt to the high-temperature environment around the furnace roller 1. At the same time, the semiconductor refrigeration plate 6 is powered on for cooling, and the cooling end reduces the temperature in the front heat dissipation cavity and the rear heat dissipation cavity to protect the displacement sensor 7 from being damaged by high temperature. The displacement sensor 7 detects the radial runout data of the furnace roller 1 during rotation in real time to obtain the deformation data of the furnace roller 1. The data acquisition module filters and amplifies the sensor signal to eliminate noise interference. The data processing module calculates the deformation of the furnace roller 1 through an algorithm and compares it with the preset deformation threshold. When the deformation exceeds the set threshold, the display and alarm module will send an audible and visual alarm signal, and the detection results are displayed in real time on the operation interface for the operator's reference.

[0024] When the positive ring 8 is connected to the positive pole of the power supply and the negative ring 9 is connected to the negative pole of the power supply, an electric field is formed between the positive ring 8 and the negative ring 9, and the air around the positive ring 8 is ionized and quickly attracted by the negative ring 9. The ionized air pushes the air from the positive ring 8 to the negative ring 9 through collision and friction. When the air inside the chassis 2 flows, the heat conducted from the upper surface of the chassis 2 can be dissipated. The filter plate 22 effectively blocks external dust from entering the chassis 2. Air flows in from one end of the chassis 2 and flows out from the other end. Part of the flowing air will pass through the lower heat dissipation cavity. The heat dissipation plate 10 in the lower heat dissipation cavity conducts and dissipates the heat from the heating end of the semiconductor refrigeration plate 6. The air flowing in the lower heat dissipation cavity dissipates heat to the heat dissipation plate 10. By setting a heat dissipation component, it is ensured that the displacement sensor 7 in the chassis 2 operates at a suitable temperature to avoid damage by high temperature. The ion wind component has no moving parts during the heat dissipation process. Compared with traditional fan cooling, it can avoid vibration of the chassis 2, further improving the detection accuracy of the equipment.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A non-contact online detection device for radial deformation of furnace rollers, comprising a central control system, a communication module, a data processing module, a display and alarm module, a data acquisition module and a plurality of pairs of displacement sensors (7), characterized in that: The invention comprises a chassis (2) and a vehicle frame (3), wherein the chassis (2) is mounted on the vehicle frame (3) via four electric push rods (4), and a plurality of pairs of displacement sensors (7) are mounted in the chassis (2). All displacement sensors (7) are connected to a data acquisition module circuit, and the data acquisition module and the display and alarm module are respectively connected to a data processing module circuit. The data processing module is connected to a central control system via a communication module. A heat dissipation component is provided in the chassis (2), and four groups of shock absorbing components are provided on the vehicle frame (3).

2. The non-contact online detection device for radial deformation of a furnace roller according to claim 1, characterized in that: The front end of the vehicle frame (3) is provided with a front baffle (12), the rear end of the vehicle frame (3) is provided with a rear drive assembly (11), a pair of half-tooth plates (15) are rotatably mounted at a position near the front baffle (12) at the bottom of the vehicle frame (3), servo motors (16) are provided at the bottom of the pair of half-tooth plates (15) and in the rear drive assembly (11), and the four groups of shock absorbing assemblies are respectively mounted on the four servo motors (16).

3. The non-contact online detection device for radial deformation of furnace rollers according to claim 2, characterized in that: A driving motor is installed in the vehicle frame (3), a main gear (13) is installed on the motor shaft of the driving motor, the main gear (13) is arranged at the bottom of the vehicle frame (3), and a driven gear (14) is rotatably installed at the bottom of the vehicle frame (3), the driven gear (14) is meshed with the main gear (13), and the driven gear (14) is also meshed with two half-tooth plates (15), and the pair of half-tooth plates (15) are symmetrically installed.

4. The non-contact online detection device for radial deformation of a furnace roller according to claim 2, characterized in that: Each group of the shock absorbing components includes a wheel hub (17), the wheel hub (17) is connected to the motor shaft of the servo motor (16), and a plurality of inner magnets (18) are evenly distributed in a ring shape in the wheel hub (17), the side of the inner magnet (18) close to the vehicle frame (3) is the N pole, and the side of the inner magnet (18) away from the vehicle frame (3) is the S pole, and shock absorbing rubber pads (19) are provided on both sides of the wheel hub (17).

5. The non-contact online detection device for radial deformation of furnace rollers according to claim 4, characterized in that: The outer side of the wheel hub (17) is wrapped with a shock-absorbing wheel sleeve (20), and the shock-absorbing wheel sleeve (20) is connected to the shock-absorbing rubber pad (19). There is a gap between the inner wall of the shock-absorbing wheel sleeve (20) and the wheel hub (17) and the motor shaft of the servo motor (16). Magnetic blocks (21) are evenly distributed in an annular shape on both sides of the shock-absorbing wheel sleeve (20). The number of the magnetic blocks (21) on each side is the same as the number of the inner magnets (18), and the magnetic blocks (21) on each side are attracted to the inner magnets (18).

6. The non-contact online detection device for radial deformation of furnace rollers according to claim 1, characterized in that: The interior of the chassis (2) is provided with three partitions, and the three partitions divide the interior of the chassis (2) into a lower heat dissipation cavity, a front heat dissipation cavity, and a rear heat dissipation cavity. The front heat dissipation cavity and the rear heat dissipation cavity are symmetrically arranged. Each pair of displacement sensors (7) is symmetrically arranged in the front heat dissipation cavity and the rear heat dissipation cavity. Each displacement sensor (7) is arranged at an angle of 45 degrees. A semiconductor cooling plate (6) is installed at the bottom of each displacement sensor (7). The semiconductor cooling plate (6) passes through the front heat dissipation cavity or the rear heat dissipation cavity to the lower heat dissipation cavity. The heating ends of the semiconductor cooling plates (6) are both located in the lower heat dissipation cavity. Filter plates (22) are provided on both sides of the chassis (2).

7. The non-contact online detection device for radial deformation of furnace rollers according to claim 6, characterized in that: A skylight is provided above the chassis (2) at a position corresponding to each displacement sensor (7), and a low-pass glass (5) is provided in the skylight. The heat dissipation assembly includes a plurality of heat dissipation plates (10) and a plurality of ion wind generators. The plurality of heat dissipation plates (10) are all located in the lower heat dissipation cavity, and each heat dissipation plate (10) is in contact with two symmetrically arranged semiconductor refrigeration plates (6).

8. The non-contact online detection device for radial deformation of furnace rollers according to claim 7, characterized in that: Several ion wind generators are symmetrically installed in the front heat dissipation cavity and the rear heat dissipation cavity. Each ion wind generator includes a positive electrode ring (8) and a negative electrode ring (9). The positive electrode ring (8) is serrated on the side facing the negative electrode ring (9). The serration directions of the several positive electrode rings (8) located in the front heat dissipation cavity are the same.

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