A flaw detection device and method for a rolling mill work roll
By integrating flaw detection, cleaning, and sanitation units, the problem of impurities and wastewater affecting the flaw detection process of rolling mill work rolls has been solved, achieving higher flaw detection accuracy and equipment stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BERIS ENG & RES CORP
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-14
AI Technical Summary
In the existing technology, surface impurities on the rolling mill work rolls affect the detection accuracy during the flaw detection process, and wastewater may splash when the linkage rolls rotate, leading to inaccurate flaw detection.
Design a device that integrates flaw detection, cleaning and sanitation units. The device cleans and detects flaws on the work roller through a rotating component and a multimodal sensing component. The linkage component is coupled with the flaw detection unit to clean the wastewater on the linkage roller, ensuring a clean environment for the flaw detection process.
This improves the accuracy and reliability of flaw detection on the working roll, avoids wastewater splashing caused by the rotation of the linkage roll, and ensures the accuracy of the flaw detection results and the stability of the equipment.
Smart Images
Figure CN122385757A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of rolling mill work roll repair technology, specifically relating to a flaw detection device and method for rolling mill work rolls. Background Technology
[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.
[0003] In the metal rolling industry, rolling mill work rolls apply rolling force and use rotational friction to induce plastic deformation in metal materials, achieving key objectives such as dimensional accuracy control, plate shape optimization, and surface quality improvement. Under complex operating conditions of long-term high speed and high pressure, work rolls are prone to defects such as scratches, peeling, and cracks, which directly affect product quality and production efficiency.
[0004] Currently, additive repair technology is widely used in the industry, but it has the following drawbacks: before repair, the work roll is removed from the rolling mill and then transported by overhead crane to the roll room for inspection and repair, which is a complicated and inefficient repair process.
[0005] To solve the above-mentioned technical problems, the prior art discloses a roll repair device that does not require disassembly, including a rotating head, on which a molten metal sprayer, a sanding wheel and a 3D scanning flaw detector are arranged circumferentially at intervals. The rotation of the rotating head drives the molten metal sprayer, the sanding wheel or the 3D scanning flaw detector to cooperate with the roll; and a moving adjustment part.
[0006] The above solution has the following drawbacks: During operation, the work rollers in the above scheme will accumulate a large amount of impurities on their surface, which will interfere with the detection accuracy and affect the flaw detection accuracy. Cleaning the work rollers will leave wastewater on the linkage rollers. When flaw detection is performed, the linkage rollers will drive the work rollers to rotate, and the wastewater may be splashed onto the work rollers, which will also affect the flaw detection accuracy. Summary of the Invention
[0007] In view of this, the purpose of the present invention is to provide a flaw detection device and method for rolling mill work rolls, which can solve the technical problem in the prior art where impurities on the surface of the work roll affect the accuracy of flaw detection during work roll scanning.
[0008] To achieve the above objectives, the present invention adopts the following technical solution: In one aspect, a flaw detection device for rolling mill work rolls is provided. The rolling mill includes upper and lower linked rolls, and the flaw detection device includes a flaw detection unit, a cleaning unit, and a cleaning unit. The bottom of the flaw detection unit can be detachably connected to the cleaning unit. The cleaning unit includes a linkage component and a scraping component. The linkage component includes a connecting plate that is slidably connected to the bottom of the work frame. The connecting plate is fixedly connected to the scraping component facing the work roller. A clutch groove is opened on the top surface of the connecting plate. The bottom of the flaw detection unit is slidably connected in the clutch groove. A clutch opening is opened on the side of the clutch groove away from the work roller. The cleaning unit includes a rotating component, a pushing component, and a cleaning component. The rotating component is fixedly connected to the work frame, the pushing component is fixedly connected to the rotating component, and the cleaning component is fixedly connected to the pushing component.
[0009] Furthermore, the flaw detection unit includes a transverse movement assembly, an axial movement assembly, and a multimodal sensing assembly; the transverse movement assembly is slidably connected to the work frame, the axial movement assembly is fixedly connected to the transverse movement assembly, and the axial movement assembly is fixedly connected to the multimodal sensing assembly; the multimodal sensing assembly includes an ultrasonic flaw detector, a three-dimensional laser scanner, and an infrared imager.
[0010] Furthermore, a first sliding groove is provided at the upper end of the work frame, and the transverse component includes a reciprocating lead screw rotatably connected in the first sliding groove. A sliding block is also slidably connected in the first sliding groove, and the sliding block is threadedly connected to the reciprocating lead screw.
[0011] Furthermore, the axial movement assembly includes an axial cylinder and a scanning bracket. The axial cylinder is fixedly connected to a sliding block, and the output end of the axial cylinder is fixedly connected to the scanning bracket. The multimodal sensing component is mounted on the scanning bracket, and the bottom end of the scanning bracket is slidably connected in a clutch groove.
[0012] Furthermore, a second sliding groove is provided at the bottom of the work frame, and the bottom of the connecting plate is connected to the sliding frame, which is slidably connected in the second sliding groove.
[0013] Furthermore, the connecting plate is connected to the scraping assembly via the output cylinder. The scraping assembly includes a scraper blade, which cooperates with the linkage roller. A waste liquid collection tank is installed at the bottom of the work frame.
[0014] Furthermore, the driving component includes a drive cylinder, the output end of which is equipped with a connecting block, and the connecting block is equipped with high-pressure nozzles corresponding to the number of work rollers, the high-pressure nozzles being inclined.
[0015] Furthermore, two sliding frames are fixedly connected to the connecting block. Multiple brush rollers and transmission rods are rotatably connected inside the sliding frames. The multiple brush rollers and transmission rods are driven by a transmission chain. A fixed gear is rotatably connected to the sliding frame. The end of the fixed gear meshes with the end of the transmission rod. Toothed plates are installed between the linkage roller and the working roller. The toothed plates mesh with the fixed gear.
[0016] Furthermore, a magnetic plate is detachably connected to the sliding frame.
[0017] Secondly, a flaw detection method for the aforementioned flaw detection device for rolling mill work rolls is provided, the specific steps of which include: Start the rotating assembly to make the pushing assembly parallel to the working roller, and the pushing assembly will push the cleaning assembly to move along the length of the working roller; The rotary assembly resets, activating the axial cylinder, output cylinder, and lateral movement assembly, while simultaneously activating the multimodal sensing assembly. When the axial cylinder drives the multimodal sensing component to a larger detection distance, the output cylinder is shut off.
[0018] Compared with the prior art, the advantages and positive effects of this invention are: This invention installs a cleaning unit on the feed side of the work frame to clean the surface of the work roll, providing a clean environment for flaw detection. Simultaneously, a cleaning unit is located at the bottom of the feed side of the work frame, coupling the cleaning unit with the flaw detection unit. When the flaw detection unit reciprocates relative to the work roll, it drives the cleaning unit to move relative to the linkage roller at the bottom of the work frame, cleaning the linkage roller synchronously. This prevents wastewater or sewage from splashing onto the work roll during the flaw detection stage, thus avoiding interference with the detection results. This invention effectively enhances the accuracy of flaw detection on the work roll. Attached Figure Description
[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0020] Figure 1 This is a front view of a flaw detection device for a rolling mill work roll according to Embodiment 1 or 2 of the present invention; Figure 2 This is a rear view of a flaw detection device for a rolling mill work roll according to Embodiment 1 or 2 of the present invention; Figure 3 This is a structural diagram of the cleaning unit in Embodiment 1 or 2 of the present invention; Figure 4 This is a schematic diagram of the installation position of the cleaning unit in Embodiment 1 or 2 of the present invention; Figure 5 This is an inner structural diagram of the sliding frame in Embodiment 1 or 2 of the present invention; Figure 6 This is an exploded view of the sliding frame in Embodiment 1 or 2 of the present invention; In the picture: 1. Work frame; 101. Linkage roller; 102. Work roller; 2. Flaw detection unit; 201. Reciprocating lead screw; 202. Sliding block; 203. Axial cylinder; 204. Scanning bracket; 205. Multimodal sensing component; 3. Cleaning unit; 301. Sliding frame; 302. Connecting plate; 303. Clutch groove; 304. Clutch port; 305. Scraper plate; 4. Cleaning unit; 401. Drive cylinder; 402. Connecting block; 403. High-pressure nozzle; 404. Sliding frame; 405. Magnetic plate; 406. Brush roller; 407. Transmission chain; 408. Transmission rod; 409. Bevel gear; 410. Fixed gear; 411. Gear plate; 412. Waste liquid collection tank; 5. Hydraulic shears. Detailed Implementation
[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0022] The present invention will now be described in detail with reference to the accompanying drawings.
[0023] Example 1 This embodiment discloses a flaw detection device (hereinafter referred to as "scanning device") for rolling mill work rolls, such as... Figure 1 , Figure 2 As shown, the work stand 1 of the rolling mill is installed on the feed side. Two upper and lower linkage rollers 101 are rotatably connected inside the work stand 1. Two upper and lower work rollers 102 are also rotatably connected inside the linkage rollers 101. The ends of the linkage rollers 101 and the work rollers 102 are connected via a transmission mechanism. The linkage rollers 101 drive the adjacent work rollers 102 to rotate. A working groove is formed between the two work rollers 102. The metal sheet passes through the working groove and is rolled into shape by the upper and lower work rollers 102. Figure 1 As shown, the scanning device includes a flaw detection unit 2, a cleaning unit 4, and a cleaning unit 3.
[0024] In this embodiment, the bottom end of the flaw detection unit and the cleaning unit can be detachably connected, such as... Figure 1 , Figure 3 As shown, in this embodiment, the cleaning unit 3 includes a linkage assembly and a scraping assembly slidably connected to the bottom of the work frame 1. The linkage assembly includes a connecting plate 302, which is fixedly connected to the scraping assembly facing the linkage roller 101. A clutch groove 303 is formed on the connecting plate 302, and the bottom end of the flaw detection unit is slidably connected in the clutch groove 303. A clutch opening 304 is formed on the side of the clutch groove 303 away from the linkage roller 101. When the bottom end of the flaw detection unit does not reach the clutch opening 304, the flaw detection unit drives the linkage assembly to slide relative to the work frame 1, so that the scraping assembly cleans the cleaning wastewater on the linkage roller 101. When the bottom end of the flaw detection unit reaches the clutch opening 304, the bottom end of the flaw detection unit disengages from the clutch opening 304.
[0025] In this embodiment, the cleaning unit 4 is used to clean the surface of the work roller 102 to prevent impurities on the work roller 102 from affecting the flaw detection results when the flaw detection unit 2 detects flaws in the work roller 102.
[0026] like Figure 1 , Figure 4 , Figure 5 As shown, the cleaning unit 4 includes a rotating component, a pushing component, and a cleaning component. The rotating component is mounted on the side wall of the work frame, the pushing component is mounted on the rotating component, and the cleaning component is mounted on the pushing component. The rotating component drives the pushing component to the working position or the standby position. The pushing component rotates to the working position and is parallel to the working roller 102. The cleaning component is directly opposite the working roller 102. The pushing component pushes the cleaning component to move along the axial direction of the working roller 102 to clean the entire length of the working roller 102. After cleaning, the rotating component drives the pushing component to rotate to the standby position and is perpendicular to the working roller 102.
[0027] It is understandable that the cleaning unit 4 cleans the work roller 102 before the flaw detection unit 2 performs flaw detection. During cleaning, the waste liquid from the cleaning unit 4 flows onto the lower linkage roller 101 under gravity. When the work roller 102 is being tested, it should continue to rotate. Since the work roller 102 rotates together with the linkage roller 101, if the linkage roller 101 is not cleaned in time, the wastewater on it may be splashed onto the work roller 102 during rotation. To address this, this embodiment includes a cleaning unit 3, which is linked to the flaw detection unit 2. During the flaw detection process of the work roller 102, the linkage roller 101 is cleaned simultaneously. It is also understandable that after flaw detection, the work roller 102 needs to be kept clean during repair.
[0028] Understandably, compared to existing technologies that use a single flaw detection device to inspect the work roll, which cannot detect internal damage to the work roll, and whose surface impurities can interfere with the detection accuracy, the scanning device in this embodiment integrates multiple flaw detection devices to inspect the interior and surface of the work roll. Furthermore, a cleaning unit cleans the surface of the work roll, and the linkage roller can be cleaned during the flaw detection process. This prevents wastewater or sewage from splashing onto the work roll during the flaw detection stage, thus avoiding any impact on the detection results.
[0029] In this embodiment, the flaw detection unit 2 is used to detect defects in the work roll 102. The flaw detection unit 2 includes a transverse movement component, an axial movement component, and a multimodal sensing component 205. The multimodal sensing component 205 integrates multiple detection devices for flaw detection on the surface and interior of the work roll 102.
[0030] In this embodiment, the multimodal sensing component 205 is mounted on the axial moving component, which is perpendicular to the work roller 102. Driven by the axial moving component, the multimodal sensing component 205 activates different detection devices at different distances from the surface of the work roller 102 to scan and detect flaws on the surface and inside of the work roller 102. The axial moving component is mounted on the transverse moving component, which is parallel to the work roller 102. Driven by the transverse moving component, it scans the entire length of the work roller 102.
[0031] In this embodiment, the multimodal sensing component 205 includes an ultrasonic flaw detector, a 3D laser scanner, and an infrared imager mounted on the scanning bracket 204. It should be noted that the ultrasonic flaw detector is a device that utilizes the characteristics of ultrasonic waves propagation, reflection, and attenuation in materials to detect internal defects. It identifies discontinuous damage such as cracks, inclusions, and pores within the material by emitting high-frequency sound waves and receiving reflected waves. The 3D laser scanner is a device that acquires three-dimensional geometric data of an object's surface by emitting a laser beam and measuring its reflection time or angle. The 3D laser scanner can reconstruct the surface morphology of the work roller 102 and detect surface defects such as wear, pits, and scratches. The infrared imager is a device that generates thermal images by detecting the infrared radiation emitted by an object. The infrared imager can detect the temperature distribution on the surface of the work roller 102, identify localized overheating areas caused by friction, fatigue, or internal defects, thereby assisting in determining the operating status and potential faults of the work roller 102.
[0032] In this embodiment, the bottom end of the axial moving component is slidably connected within the clutch groove 303. When the lateral moving component drives the multimodal sensing component 205 to move relative to the work roller 102, the bottom end of the axial moving component moves relative to the clutch groove 303. Before the bottom end of the axial moving component reaches the clutch opening 304, the lateral moving component drives the multimodal sensing component 205 to move along the length direction of the work roller 102, thereby driving the linkage component to slide relative to the work frame 1, so that the scraping component cleans the cleaning wastewater on the linkage roller 101. When the bottom end of the axial moving component reaches the clutch opening 304, the lateral moving component drives the multimodal sensing component 205 to move along the length direction of the work roller 102, and the bottom end of the axial moving component disengages from the clutch opening 304.
[0033] Understandably, when the axial moving component drives the scanning bracket 204 to scan along the entire length of the work roll 102 under the drive of the transverse moving component, the ultrasonic flaw detector can penetrate the surface of the work roll 102 to detect whether there are defects such as cracks and inclusions inside; the three-dimensional laser scanner can detect the surface geometry and wear condition of the work roll 102, generating three-dimensional point cloud data for analyzing surface roughness, wear amount, and whether there are surface damages such as pits and scratches; the infrared imager detects the temperature distribution on the surface of the work roll 102, promptly detecting local hot spots caused by abnormal friction, fatigue, or internal defects, providing thermal basis for assessing the operating status and potential faults of the work roll 102. This embodiment integrates multiple sensors to acquire internal structural information, surface geometric information, and thermal state information of the work roll 102, overcoming the limitations of a single sensor in information acquisition, and providing more comprehensive and accurate perception results. This avoids production accidents or equipment damage caused by insufficient detection, and improves the stability and safety of rolling mill operation.
[0034] In some implementations, the multimodal sensing component 205 may also employ an eddy current sensor to detect surface cracks, or a vision sensor to acquire high-resolution images.
[0035] like Figure 1 As shown, a first sliding groove is formed at the upper end of the feed side of the work frame 1. The transverse movement assembly includes a reciprocating screw 201, which is installed in the first sliding groove, and both ends of the reciprocating screw 201 are rotatably connected to both ends of the first sliding groove. A sliding block 202 is also slidably connected in the first sliding groove. The sliding block 202 is threadedly connected to the reciprocating screw 201, and one end of the reciprocating screw 201 extends out of the first sliding groove and is driven to rotate by a transverse drive device. An axial movement assembly is installed on the sliding block 202. It can be understood that when the transverse drive device drives the reciprocating screw 201 to rotate, the sliding block 202 moves along the first sliding groove, thereby driving the axial movement assembly to move relative to the work roller 102 along the axial direction of the work roller 102, so that the multimodal sensing component 205 on the axial movement assembly performs flaw detection on the work roller 102.
[0036] In this embodiment, the reciprocating lead screw 201 can be a ball screw or a trapezoidal lead screw, and the sliding block 202 can be a ball nut seat that mates with the ball screw, or a sliding nut that mates with the trapezoidal lead screw. The lateral drive device can be a servo motor, a stepper motor, or a DC motor.
[0037] Understandably, the combination of the reciprocating lead screw 201 and the sliding block 202, along with the precise guidance of the first sliding groove, avoids problems such as jitter, deviation, or inaccurate positioning that may occur during the scanning process. This enables the multimodal sensing component 205 to stably and accurately acquire data from the surface of the work roll 102, improving the reliability and efficiency of flaw detection and ensuring comprehensive and accurate identification of defects in the work roll 102.
[0038] like Figure 1 As shown, in this embodiment, the axial movement assembly includes an axial cylinder 203 and a scanning bracket 204. The axial cylinder 203 is fixed on the sliding block 202, and the output end of the axial cylinder 203 is connected to the scanning bracket 204. The multimodal sensing component 205 is mounted on the scanning bracket 204, and the bottom end of the scanning bracket 204 is slidably connected in the clutch groove 303. It should be noted that the scanning bracket 204 is perpendicular to the output end of the axial cylinder 203, the output end of the axial cylinder 203 is perpendicular to the reciprocating lead screw 201, and the reciprocating lead screw 201 is parallel to the work roller 102.
[0039] Understandably, in this embodiment, the axial cylinder 203 is used to provide push-pull force to control the distance between the scanning bracket 204 and its multimodal sensing component 205 and the work roller 102. This design is because the ultrasonic flaw detector performs internal inspection of the work roller 102 by emitting and receiving sound waves, requiring a relatively small detection distance, typically 1-10 mm; while the 3D laser scanner is used to inspect the surface of the work roller 102, requiring a medium detection distance, typically 50-100 mm; and the infrared imager detects the temperature field distribution of the work roller 102, requiring a relatively large detection distance, typically 100-200 mm. In one specific embodiment, a servo cylinder with a position sensor is used, and the intake and exhaust volume of the servo cylinder is controlled by a proportional valve or servo valve, combined with position feedback to achieve closed-loop control.
[0040] It is also understandable that the reciprocating screw 201 drives the multimodal sensing component 205 to move back and forth three times along the axial direction of the working roller 102, which corresponds to the detection process of the ultrasonic flaw detector, the three-dimensional laser scanner and the infrared imager respectively; during the detection process, the flaw detection distance between the multimodal sensing component 205 and the working roller 102 increases from near to far.
[0041] like Figure 1 , Figure 3As shown, in this embodiment, the bottom end of the scanning bracket 204 is slidably connected in the clutch groove 303. The clutch opening 304 of the clutch groove 303 is located on the side away from the working roller 102. When the scanning bracket 204, driven by the axial cylinder 203, maintains a small or medium detection distance from the working roller 102, the bottom end of the scanning bracket 204 is located in the clutch groove 303. When the reciprocating screw 201 drives the multimodal sensing component 205 to move along the axial direction of the working roller 102, the scanning bracket 204 drives the cleaning unit 3 to clean the linkage roller 101. When the scanning bracket 204, driven by the axial cylinder 203, maintains a large detection distance from the working roller 102, the bottom end of the scanning bracket 204 leaves the clutch groove 303. When the reciprocating screw 201 drives the multimodal sensing component 205 to move along the axial direction of the working roller 102, the cleaning unit 3 no longer moves.
[0042] In one specific embodiment, the bottom end of the scanning bracket 204 integrates a slider made of polytetrafluoroethylene (PTFE), which cooperates with the clutch groove 303 to provide low-friction sliding support.
[0043] like Figure 1 , Figure 3 As shown, in this embodiment, the connecting plate 302 is connected to the scraping assembly via an output cylinder. The scraping assembly includes a scraper 305, the side of which faces the linkage roller 101 is arc-shaped for cooperating with the linkage roller 101. A waste liquid collection tank 412 is installed at the bottom of the working frame 1 to collect wastewater flowing down from the working roller 102. A second sliding groove is opened at the bottom end of the feeding side of the working frame 1, and a sliding frame 301 is fixedly connected to the bottom end of the connecting plate. The sliding frame 301 is slidably connected in the second sliding groove.
[0044] In this embodiment, the clutch groove 303 is formed on the top surface of the connecting plate 302 for engaging with the bottom end of the scanning bracket 204. The output cylinder provides push-pull force, driving the connecting plate 302 and the scraping assembly to move relative to the linkage roller 101. The scraper plate 305 contacts the surface of the linkage roller 101 during operation, removing deposits or wastewater from the linkage roller 101 by scraping or brushing. The waste liquid collection tank 412 is a container located at the bottom of the work frame 1, used to collect wastewater, stains, or debris flowing from the surface of the work roller 102 or linkage roller 101 during cleaning and scraping, which helps maintain site cleanliness and environmental protection.
[0045] In one embodiment, the scraper blade 305 is made of a material that is elastic and abrasion-resistant, such as rubber or polyurethane.
[0046] like Figure 1 , Figure 4 , Figure 5As shown, the rotating component of the cleaning unit 4 includes a rotating cylinder, and the pushing component includes a driving cylinder 401. The driving cylinder is fixedly connected to the rotating cylinder. A connecting block 402 is installed at the output end of the driving cylinder 401. A high-pressure nozzle 403 corresponding to the number of working rollers 102 is installed on the connecting block 402. The high-pressure nozzle 403 is inclined so as to better spray and clean the working rollers 102.
[0047] Understandably, the high-pressure nozzle 403 is used to spray the cleaning fluid onto the surface of the work roller 102 at high pressure and high speed, thereby removing stains and deposits from the surface of the work roller 102 through mechanical impact. The high-pressure nozzle 403 can be a fan-shaped nozzle, a solid cone nozzle, or a straight nozzle. In this embodiment, the high-pressure nozzle 403 is set at a 45° angle to the connecting block 402, optimizing the impact effect and coverage of the cleaning fluid on the surface of the work roller 102. This helps to flush and remove stubborn stains adhering to the surface of the work roller 102, and avoids splashing or reduced cleaning efficiency that may result from the vertical impact of the cleaning fluid on the work roller 102.
[0048] Understandably, the rotary cylinder provides the cleaning unit 4 with rotational or oscillating capability, enabling the cleaning unit 4 to move from the standby position to the working position. The drive cylinder 401 is used to drive the high-pressure nozzle 403 to move along the axial direction of the working roller 102, performing a thorough cleaning of the working roller 102. The connecting block 402 serves as an intermediate connector, transmitting the linear motion of the drive cylinder 401 to the high-pressure nozzle 403 and providing a stable mounting platform.
[0049] Understandably, when the work roll 102 needs cleaning, the rotary cylinder drives the push assembly to rotate from the standby position to the working position. The drive cylinder 401 drives the connecting block 402 to reciprocate along the axial direction of the work roll 102. During this process, the high-pressure nozzle 403 continuously sprays high-pressure cleaning fluid onto the surface of the work roll 102, peeling off and washing away the stains and impurities adhering to the work roll 102. This provides a clean surface for the subsequent flaw detection scanning of the work roll 102 by the multimodal sensing component 205, improving the accuracy and reliability of the flaw detection results.
[0050] It should be noted that stubborn stains, oil, or other deposits may exist on the surface of the work roll 102, which may be difficult to remove completely by the impact of high-pressure water flow, affecting the accuracy of subsequent flaw detection and scanning. Therefore, if... Figure 4 , Figure 5 , Figure 6As shown, two sliding frames 404 are fixedly connected to the connecting block 402. Multiple brush rollers 406 (two in this embodiment) and a transmission rod 408 are rotatably connected inside the sliding frame 404. The multiple brush rollers 406 and the transmission rod 408 are driven by a transmission chain 407. A fixed gear 410 is rotatably connected to the sliding frame 404. A bevel gear 409 is fixedly connected to the end of the fixed gear 410 located inside the sliding frame 404. A bevel gear 409 is also fixedly connected to the end of the transmission rod 408 away from the transmission chain 407. The bevel gear 409 of the fixed gear 410 meshes with the bevel gear 409 of the transmission rod 408.
[0051] It is understandable that when the fixed gear 410 rotates, it drives the bevel gear 409 and the transmission rod 408 to rotate, which in turn drives the brush roller 406 to rotate. When the brush on the brush roller 406 comes into contact with the working roller 102, it can clean the surface of the working roller 102.
[0052] like Figure 1 , Figure 4 As shown, toothed plates 411 are installed between the linkage roller 101 and the working roller 102. The toothed plates 411 are parallel to the working roller 102 and mesh with the fixed gear 410. It can be understood that when the drive cylinder 401 drives the connecting block 402 to reciprocate along the axial direction of the working roller 102, it drives the sliding frame 404 to move relative to the toothed plates 411. When the fixed gear 410 moves along the toothed plates 411, the fixed gear 410 rotates, thereby driving the brush roller 406 to rotate. During this process, the high-pressure nozzle 403 scours the surface of the working roller 102, while the brush roller 406 brushes the surface of the working roller 102.
[0053] It is also understandable that the sliding frame 404 is arc-shaped, and the distance between the two sliding frames 404 is the same as the distance between the two working rollers 102. The sliding frame 404 covers the surface of the working roller 102, which makes it easier for the brush roller 406 to clean the surface of the working roller 102.
[0054] like Figure 5 , Figure 6 As shown, a magnetic plate 405 is detachably connected to the sliding frame 404, which can adsorb the magnetic waste material scraped off the working roller 102 by the brush roller 406. In this embodiment, the magnetic plate 405 is made of permanent magnet material, such as neodymium iron boron magnet or ferrite magnet, and is detachably fixed to the sliding frame 404 by mechanical means such as screws, clips or grooves. After the cleaning operation is completed, the magnetic plate 405 with adsorbed waste material is removed from the sliding frame 404 for centralized cleaning or replacement to avoid the magnetic waste material from scattering.
[0055] like Figure 2As shown, a hydraulic shear 5 is installed on one side of the work stand 1. The hydraulic shear 5 can cut the strip material. It is understood that when a serious defect is detected in the rolled strip, the machine is immediately stopped to inspect the work roll 102. The hydraulic shear can cut the strip material being rolled, so that the production line can be stopped safely and quickly, facilitating subsequent inspection operations.
[0056] Example 2 This embodiment discloses a flaw detection method for a flaw detection device for rolling mill work rolls, which applies a flaw detection device for rolling mill work rolls disclosed in Embodiment 1. The specific steps include: Start the rotating assembly to make the pushing assembly parallel to the working roller. The pushing assembly pushes the cleaning assembly to move along the length of the working roller to clean the entire length of the working roller and provide a clean surface for subsequent flaw detection. The rotating assembly is reset, the axial cylinder, output cylinder, and transverse assembly are activated, and the multimodal sensing assembly is activated to perform flaw detection on the entire length of the working roller and clean the linkage roller at the bottom of the work frame. When the axial cylinder drives the multimodal sensing component to a larger detection distance, the bottom of the axial moving component moves out of the clutch groove and no longer drives the cleaning unit to move, thus shutting off the output cylinder.
[0057] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.
Claims
1. A flaw detection device for rolling mill work rolls, the rolling mill comprising upper and lower linked rolls, characterized in that, It includes a flaw detection unit, a cleaning unit, and a cleaning unit; The bottom end of the flaw detection unit is detachably connected to the cleaning unit. The cleaning unit includes a linkage component and a scraping component. The linkage component includes a connecting plate that is slidably connected to the bottom end of the work frame. The connecting plate is fixedly connected to the scraping component facing the work roller. A clutch groove is opened on the top surface of the connecting plate. The bottom end of the flaw detection unit is slidably connected in the clutch groove. A clutch opening is opened on the side of the clutch groove away from the work roller. The cleaning unit includes a rotating component, a pushing component, and a cleaning component. The rotating component is fixedly connected to the work frame, the pushing component is fixedly connected to the rotating component, and the cleaning component is fixedly connected to the pushing component.
2. The flaw detection device for rolling mill work rolls as described in claim 1, characterized in that, The flaw detection unit includes a lateral movement component, an axial movement component, and a multimodal sensing component; the lateral movement component is slidably connected to the work frame, the axial movement component is fixedly connected to the lateral movement component, and the axial movement component is fixedly connected to the multimodal sensing component; the multimodal sensing component includes an ultrasonic flaw detector, a three-dimensional laser scanner, and an infrared imager.
3. The flaw detection device for rolling mill work rolls as described in claim 2, characterized in that, The upper end of the work frame is provided with a first sliding groove. The transverse component includes a reciprocating lead screw rotatably connected in the first sliding groove. A sliding block is also slidably connected in the first sliding groove and threadedly connected to the reciprocating lead screw.
4. The flaw detection device for rolling mill work rolls as described in claim 3, characterized in that, The axial movement assembly includes an axial cylinder and a scanning bracket. The axial cylinder is fixedly connected to the sliding block, and the output end of the axial cylinder is fixedly connected to the scanning bracket. The multimodal sensing component is mounted on the scanning bracket, and the bottom end of the scanning bracket is slidably connected in the clutch groove.
5. The flaw detection device for rolling mill work rolls as described in claim 1, characterized in that, The bottom of the work frame has a second sliding groove, and the bottom of the connecting plate is connected to the sliding frame, which is slidably connected in the second sliding groove.
6. The flaw detection device for rolling mill work rolls as described in claim 5, characterized in that, The connecting plate is connected to the scraping assembly via an output cylinder. The scraping assembly includes a scraper blade, which cooperates with a linkage roller. A waste liquid collection tank is installed at the bottom of the work frame.
7. The flaw detection device for rolling mill work rolls as described in claim 1, characterized in that, The pushing component includes a driving cylinder, and a connecting block is installed at the output end of the driving cylinder. A high-pressure nozzle corresponding to the number of working rollers is installed on the connecting block, and the high-pressure nozzle is set at an angle.
8. The flaw detection device for rolling mill work rolls as described in claim 7, characterized in that, Two sliding frames are fixedly connected to the connecting block. Multiple brush rollers and transmission rods are rotatably connected inside the sliding frames. The multiple brush rollers and transmission rods are driven by a transmission chain. A fixed gear is rotatably connected to the sliding frame. The end of the fixed gear meshes with the end of the transmission rod. Toothed plates are installed between the linkage roller and the working roller. The toothed plates mesh with the fixed gear.
9. The flaw detection device for rolling mill work rolls as described in claim 8, characterized in that, A magnetic plate is detachably connected to the sliding frame.
10. The flaw detection method of the flaw detection device for rolling mill work rolls as described in claims 1-9, characterized in that, The specific steps include: The rotating assembly is activated, making the pushing assembly parallel to the working roller, and the pushing assembly pushes the cleaning assembly to move along the length of the working roller; The rotating component resets, activating the axial cylinder, output cylinder, and lateral movement component, while simultaneously activating the multimodal sensing component. When the axial cylinder drives the multimodal sensing component to a larger detection distance, the output cylinder is shut off.