Intelligent monitoring device for rolling mill equipment

Abstract

The present application relates to a kind of rolling mill equipment intelligent monitoring device, it is related to steel rolling monitoring technical field, solve the problem that the existing contact type or near distance detection device is under the vibration of steel plate high-speed conveying, because of mechanical inertia, jump missed detection and air gap fluctuation lead to signal distortion.It includes rolling mill, supporting component, adsorption roller and defect monitoring device.Supporting component is fixed at feed end, adsorption roller utilizes permanent magnet to adsorb steel plate, and inhibits the normal vibration of plate material.Defect monitoring device contains defect scanning mechanism I of pneumatic detection and defect scanning mechanism II of mechanical touch.Probe.Defect scanning mechanism I utilizes airflow back pressure to capture slight deformation, overcomes mechanical inertia delay;Defect scanning mechanism II utilizes rigid probe to capture hard protrusion, makes up airflow diffraction blind area.The device is stable through magnetic force and pneumatic, mechanical dual mode cooperation, eliminates dynamic detection blind area, realizes accurate marking.

Description

Technical Field

[0001] This invention belongs to the field of steel rolling monitoring technology and relates to an intelligent monitoring device for rolling mill equipment. Background Technology

[0002] In the steel rolling process, to avoid interference from water mist and dust during optical inspection, contact or close-range pneumatic inspection has been increasingly adopted. However, existing technologies have the following problems in practical applications:

[0003] When steel plates are conveyed on high-speed roller conveyors, high-frequency vibrations in the normal direction are inevitable. Traditional mechanical penetrometers are limited by their own weight and spring inertia. When the steel plate vibrates downwards or encounters continuous micro-waves, the penetrometer is prone to "jumping in mid-air" due to response lag, which prevents the penetrometer from effectively contacting foreign objects and creates a detection blind zone.

[0004] Simple pneumatic back pressure detection is extremely sensitive to the distance between the nozzle and the steel plate surface. The vibration of the steel plate during transport will cause disordered changes in the air gap width, resulting in random fluctuations in the air path back pressure. This makes it difficult for the sensor to separate the real tiny foreign object signals from the background noise, which can easily lead to false triggering.

[0005] Single detection modes struggle to cover complex foreign object morphologies: flexible or flat foreign objects cannot drive mechanical levers, while sharp, permeable, hard foreign objects cannot effectively obstruct airflow. Therefore, eliminating the interference of transport vibrations on physical detection and overcoming the inherent limitations of single physical detection mechanisms are pressing technical challenges that need to be addressed. Summary of the Invention

[0006] In view of this, in order to solve the above problems, the present invention provides an intelligent monitoring device for rolling mill equipment.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an intelligent monitoring device for rolling mill equipment, comprising:

[0008] Rolling mill;

[0009] A support assembly is fixed to the feed end of a rolling mill. The support assembly includes a mounting bracket, a stud, a limit nut, a connecting seat, and a locking nut. The mounting bracket is fixedly connected to the rolling mill. The stud is vertically fixed to the top of the mounting bracket. The limit nut and the locking nut are both threaded onto the stud. The connecting seat is sleeved on the stud and sandwiched between the limit nut and the locking nut.

[0010] An adsorption roller is rotatably mounted on a support assembly. The adsorption roller includes a drive shaft, a fixed rod, and a permanent magnet. The drive shaft has a receiving cavity. One end of the fixed rod is fixed to the receiving cavity, and the other end is fixed to the support assembly. The permanent magnet is fixed to the outer wall of the fixed rod, and the magnetic pole direction is perpendicular to the steel plate.

[0011] The defect monitoring device, fixed between two connecting seats, is used to scan the upper surface of the steel plate and monitor foreign objects on the surface. When a foreign object is detected, it is automatically marked.

[0012] During the process, the steel plate is stabilized by a permanent magnet when it passes through the adsorption roller, and then foreign objects are detected and marked by a defect monitoring device to prevent impurities and foreign objects from entering the rolling mill.

[0013] As a further improvement to the above technical solution:

[0014] The defect monitoring device includes a defect scanning mechanism I. The defect scanning mechanism I includes a connecting seat I, a jet duct, a connecting duct, and a pressure sensor. The connecting seat I is fixed between two connecting seats. Multiple rectangular slots are opened in the connecting seat I. The jet duct passes through the bottom of the connecting seat I and communicates with the rectangular slots. The connecting duct is fixed to one side of the connecting seat I and communicates with the multiple rectangular slots through a pipe. The pressure sensor is located in the rectangular slot.

[0015] High-pressure gas is ejected from the jet duct through the connecting conduit and rectangular groove. When there are foreign objects on the surface of the steel plate, the airflow diffusion is obstructed, and the air pressure in the rectangular groove increases instantaneously. The air pressure sensor captures this change to trigger the marking action.

[0016] A partition plate is fixedly installed inside the rectangular groove, dividing the rectangular groove into an air chamber and an installation chamber. The top end of the jet duct extends into the air chamber. A lifting plate is slidably installed inside the installation chamber. An electromagnet is fixedly installed on the bottom wall of the installation chamber. Two scribers I are slidably installed through the bottom of the connecting seat I and the electromagnet. The top end of the scribers I is fixedly connected to the lifting plate. A compression spring is sleeved on the outer wall of the scribers I. The two ends of the compression spring abut against the lifting plate and the electromagnet respectively through spring seats.

[0017] When the electromagnet is energized, it attracts the lifting plate, which drives the scribe needle I to move down to mark the foreign object. After the power is turned off, the compressed spring pushes the lifting plate and the scribe needle I back to their original positions.

[0018] The top of the connecting seat I is fixedly provided with an installation cylinder, which is connected to the air chamber. A diaphragm is fixedly provided inside the installation cylinder. A terminal I is fixedly provided on the top of the diaphragm. A terminal II is fixedly provided on the top wall of the installation cylinder. The negative pole of the electromagnet is connected to the negative pole of the power supply through a wire. The positive pole of the electromagnet is connected to terminal I through a wire. Terminal II is connected to the positive pole of the power supply through a wire.

[0019] The increased air pressure inside the air chamber pushes the diaphragm upward, causing terminal I to contact terminal II to connect the electromagnet power supply circuit, thus automatically triggering the marking action.

[0020] The mounting cylinder is threadedly connected to a mounting tube, a limiting ring is fixedly provided on the inner wall of the mounting tube, a clamping ring is threadedly connected to the top end of the mounting tube, and the diaphragm is sandwiched between the limiting ring and the clamping ring.

[0021] The clamping force on the diaphragm can be adjusted by rotating the clamping ring to ensure a tight seal, while the limiting ring prevents the diaphragm from being damaged by excessive deformation.

[0022] The defect monitoring device also includes a defect scanning mechanism II, which includes a connecting seat II, a scribing needle II and a drive frame. The connecting seat II is fixed between two connecting seats. The scribing needle II can slide up and down on one side of the connecting seat II. The drive frame is rotatably disposed in the connecting seat II and contacts the surface of the steel plate. The drive frame is connected to the scribing needle II in a transmission manner.

[0023] In this process, foreign objects on the steel plate swing with the conveyor drive frame, and the drive frame drives the scribing needle II to move down through transmission to mark the foreign objects on the steel plate.

[0024] A guide seat is fixedly provided on one side of the connecting seat II. Guide holes are evenly opened on the guide seat along the height direction. The scriber II passes through and slides in the guide hole of the guide seat. The guide hole restricts the scriber II to move only in the vertical direction, ensuring accurate marking position.

[0025] A rotating seat is fixedly provided on one side of the connecting seat II. The drive frame is L-shaped and is rotatably connected to one side of the rotating seat via a rotating shaft. The bottom end of the drive frame is in contact with the steel plate. The other end of the drive frame is rotatably connected to a connecting rod via a rotating shaft. The end of the connecting rod away from the drive frame is rotatably connected to the scriber II.

[0026] The top of the connecting seat II has a rectangular opening, which corresponds to the position of the connecting rod. The rectangular opening provides clearance for the swing of the connecting rod, thus avoiding motion interference between the connecting rod and the connecting seat II.

[0027] The number of adsorption rollers is at least two, and the two adsorption rollers are arranged at intervals along the steel plate conveying direction, so that the two adsorption rollers can achieve stable conveying of the steel plate.

[0028] The beneficial effects of this invention are as follows:

[0029] 1. The intelligent monitoring device for rolling mill equipment disclosed in this invention actively suppresses steel plate vibration through the magnetic adsorption of the adsorption roller, locking a constant air gap reference for pneumatic detection and eliminating misjudgments caused by vibration noise. Simultaneously, in conjunction with the pneumatic back pressure principle of defect scanning mechanism I, it effectively captures minute deformations that are easily missed due to mechanical inertia, and in conjunction with the mechanical probing of defect scanning mechanism II, it captures hard foreign objects that are easily diffracted by the airflow. This eliminates the blind spots and dead zones of single detection methods.

[0030] 2. The intelligent monitoring device for rolling mill equipment disclosed in this invention solves the compatibility problem of defects in different materials by utilizing two completely different physical triggering mechanisms: mechanical and pneumatic. The pneumatic mechanism is not sensitive to foreign materials, but only to high-temperature defects, making it suitable for detecting flat defects such as oxide scale; the mechanical mechanism utilizes kinetic energy transmission and is suitable for detecting hard protrusions such as iron filings. The two mechanisms serve as redundant checks for each other, ensuring an extremely high detection rate even under harsh working conditions, and avoiding the drawbacks of traditional photoelectric detection, which is greatly affected by environmental interference and has a narrow range of applicability due to single physical detection.

[0031] 3. The intelligent monitoring device for rolling mill equipment disclosed in this invention adopts a stud-nut adjustment structure for the support component. Through the cooperation of the limit nut and the locking nut, the height of the connecting seat can be flexibly adjusted to adapt to the detection requirements of steel plates of different thicknesses. The adjustment process does not require disassembling the overall structure, making operation simple. Each core component, such as connecting seat I and connecting seat II, is fixed with bolts, which facilitates individual disassembly and maintenance. The diaphragm of defect scanning mechanism I and the drive frame of defect scanning mechanism II, and other vulnerable components, are quickly replaced through modular design, which greatly shortens the maintenance time.

[0032] 4. The intelligent monitoring device for rolling mill equipment disclosed in this invention adopts a purely mechanical probing and transmission design for the defect scanning mechanism II. It relies on the thrust of foreign objects, gravity, and lever principles to achieve detection and marking. The entire process does not require electric drive, avoiding the failure of electrical control components in harsh environments and reducing energy consumption. Although the defect scanning mechanism I involves a simple circuit, the core triggering relies on air pressure to push the diaphragm to realize the circuit opening and closing. It does not require complex sensors and control algorithms. The circuit structure is simple and reliable, reducing the procurement and maintenance costs of the electrical control system.

[0033] 5. The intelligent monitoring device for rolling mill equipment disclosed in this invention is equipped with two defect scanning mechanisms, both of which are made of hard alloy scribers. The scribers have high hardness, clear markings, and are not easily worn. They can accurately correspond to the location of foreign objects, facilitating rapid identification and processing in subsequent processes. The marking action is automatically triggered by the detection signal without manual intervention. For example, defect scanning mechanism I uses air pressure changes to achieve circuit switching and electromagnet drive, while defect scanning mechanism II directly drives the scribers through mechanical transmission. Both methods have fast response speeds, which can match the continuous production rhythm of the rolling mill, avoid production interruptions caused by manual inspection and marking, and improve production efficiency.

[0034] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0036] Figure 1 This is a three-dimensional structural schematic diagram of an intelligent monitoring device for rolling mill equipment according to the present invention;

[0037] Figure 2 This is a schematic diagram of the support component structure of an intelligent monitoring device for rolling mill equipment according to the present invention;

[0038] Figure 3 This is a cross-sectional view of the connecting seat I of the intelligent monitoring device for rolling mill equipment according to the present invention;

[0039] Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle;

[0040] Figure 5 This is a schematic diagram of the diaphragm installation structure of an intelligent monitoring device for rolling mill equipment according to the present invention;

[0041] Figure 6 This is a schematic diagram of the disassembled structure of the adsorption roller of an intelligent monitoring device for rolling mill equipment according to the present invention;

[0042] Figure 7 This is a schematic diagram of the defect scanning mechanism II of an intelligent monitoring device for rolling mill equipment according to the present invention;

[0043] Figure 8 This is a schematic diagram of the guide seat, scriber II, and drive frame structure of an intelligent monitoring device for rolling mill equipment according to the present invention;

[0044] Figure 9 This is a side view of the defect scanning mechanism II of the intelligent monitoring device for rolling mill equipment according to the present invention;

[0045] Figure 10 This is a schematic diagram of the connection structure between the guide seat, the scriber II, and the drive frame of an intelligent monitoring device for rolling mill equipment according to the present invention.

[0046] Reference numerals: 1. Rolling mill; 2. Support assembly; 21. Mounting bracket; 22. Stud; 23. Limit nut; 24. Connecting seat; 25. Locking nut; 3. Adsorption roller; 31. Drive shaft; 32. Receiving cavity; 33. Fixing rod; 34. Permanent magnet; 4. Defect scanning mechanism I; 41. Connecting seat I; 42. Air duct; 43. Connecting duct; 44. Rectangular groove; 45. Partition plate; 46. Air chamber; 47. Mounting cavity 48. Lifting plate; 49. Scribing needle I; 410. Electromagnet; 412. Compression spring; 413. Mounting cylinder; 414. Limiting ring; 415. Pressing ring; 416. Diaphragm; 417. Terminal I; 418. Terminal II; 419. Mounting tube; 5. Defect scanning mechanism II; 51. Connecting seat II; 52. Guide seat; 53. Scribing needle II; 54. Drive frame; 55. Rectangular opening; 56. Rotating seat; 57. Connecting rod. Detailed Implementation

[0047] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0048] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0049] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0050] Example 1

[0051] like Figures 1-6 As shown, an intelligent monitoring device for rolling mill equipment includes a support assembly 2 fixedly installed at the feed end of the rolling mill 1 using high-strength hexagonal head bolts. The bolts precisely fit into the pre-drilled threaded holes on the frame of the rolling mill 1, and sealant is applied to the mating surfaces to enhance connection stability. The pre-tightening force of the bolts forms a rigid connection between the support assembly 2 and the rolling mill 1, preventing component displacement due to vibration during equipment operation and ensuring the positional accuracy of subsequent detection mechanisms. The support assembly 2 includes a mounting bracket 21, which is welded from structural steel. The weld joints are fully welded with fillet welds, and the bottom is completely fitted with the flange surface of the rolling mill 1 frame. Utilizing the rigidity of the structural steel and the integrity of the weld, it provides a stable support foundation for the entire device, distributing the weight and working load of subsequent components. Two vertical studs 22 are symmetrically welded to the top of the mounting bracket 21. The outer wall of the studs 22 is machined with standard threads. Each stud 22 is fitted with a limit nut 23, a connecting seat 24 and a locking nut 25 in sequence. The connecting seat 24 has a through hole in the middle that matches the stud 22. The inner wall of the through hole is smooth to reduce sliding resistance. Through the self-locking characteristic of the thread, after the height of the connecting seat 24 is adjusted by rotating the limit nut 23, the locking nut 25 and the limit nut 23 cooperate to form a bidirectional clamping force, which firmly fixes the connecting seat 24 in the set position. At the same time, the smooth inner wall of the through hole can reduce the frictional resistance when adjusting the height of the connecting seat 24, and improve the ease of operation.

[0052] Two adsorption rollers 3 are mounted on the top of the support assembly 2, arranged along the steel plate conveying direction. The magnetic attraction of permanent magnets and the rotation of the drive shaft assist in the smooth conveying of the steel plate. A scraper can be installed below the adsorption rollers 3 to remove impurities adhering to them. The drive shaft 31 of the adsorption rollers 3 is connected to the mounting bracket 21 at both ends via bearing seats with dust covers. The bearing seats use double-row deep groove ball bearings with lip seals. The inner ring of the lip seal is tightly fitted to the drive shaft 31, and the outer ring is fixed to the inner wall of the bearing seat. The bearings are filled with high-temperature wear-resistant grease to ensure smooth rotation. Dust cover plates are bolted to the end faces of the bearing seats, forming a double dustproof structure. The bearings convert the sliding friction of the drive shaft 31 into rolling friction, reducing rotational resistance, while the grease further reduces internal bearing wear and extends service life. The drive shaft 31 has a hollow structure with an internal cavity 32. A fixing rod 33 is provided on the inner wall of the cavity. The fixing rod 33 is welded to the top of the support assembly 2 and extends to the center of the cavity. The extension direction is parallel to the axis of the drive shaft 31. The outer wall of the fixing rod 33 is fixed with neodymium iron boron permanent magnets 34 by hexagonal bolts. The magnetic pole direction is perpendicular to the surface of the steel plate. The neodymium iron boron permanent magnets 34 generate a strong magnetic field. The magnetic field lines penetrate the surface of the steel plate perpendicularly and generate an adsorption force on the steel plate to prevent the steel plate from shaking during the rolling process. A non-magnetic scraper or sleeve can be installed on the outside of the drive shaft 31. Alternatively, during shutdown maintenance, the impurities adsorbed on its surface can be cleaned by a demagnetizing device or manually.

[0053] A defect scanning mechanism I4 is fixedly installed between two connecting seats 24. The connecting seat I41 is made of aluminum alloy and is bolted to the inner side of the connecting seat 24 at both ends for easy disassembly and maintenance. The aluminum alloy material combines lightweight design with a certain degree of rigidity, reducing the overall weight of the device. The bolted connection also facilitates subsequent maintenance and component replacement. Multiple rectangular slots 44 are evenly spaced along the length of the connecting seat I41, with uniform spacing between adjacent slots to cover the width of the steel plate. Through these evenly distributed rectangular slots 44, the corresponding jet duct 42 can cover different areas of the steel plate surface, achieving comprehensive detection along the width of the steel plate and avoiding blind spots. A stainless steel jet duct 42 is fixedly inserted through the bottom of each rectangular slot 44. The bottom end of the duct extends below the connecting seat I41, and the top end connects to the rectangular slot 44. Stainless steel has good corrosion resistance and strength, and can withstand the impact of high-pressure gas. The directional design of the duct ensures that the ejected airflow acts perpendicularly to the steel plate surface, making the interaction between the airflow and the steel plate surface more direct and improving the sensitivity to pressure changes. A connecting conduit 43 is welded to one side of the connecting seat I 41, connecting to each rectangular groove 44 via branch pipes, with the connection sealed by welding. The other end of the connecting conduit 43 has an external threaded connector, on which a high-pressure resistant sealing ring is fitted. This connector is threaded to an external high-pressure air source pipe; tightening compresses the high-pressure sealing ring, preventing leakage. The connecting conduit 43 connects to each rectangular groove 44 via branch pipes, with the connection sealed by welding. The other end of the connecting conduit 43 is connected to an external high-pressure air source. The stable airflow provided by the high-pressure air source is distributed through the connecting conduit 43 to each branch pipe, then enters the rectangular groove 44 and exits from the jet conduit 42, forming a uniform airflow stream. This provides a stable air source for pressure detection, and the welded seal prevents pressure instability caused by gas leakage, ensuring detection accuracy.

[0054] Each rectangular slot 44 houses a pressure sensor with its probe facing the air inlet of the jet duct 42. These sensors are connected to a PLC controller via wires. The PLC controller is also electrically connected to an electromagnet 410 to receive the pressure signals transmitted from the sensors and control the on / off state of the electromagnets. The working principle is that the pressure sensors detect real-time pressure changes within the rectangular slots 44, converting the pressure signal into an electrical signal which is transmitted to the PLC controller. The PLC controller compares this signal with a preset threshold. When the signal exceeds the threshold, it outputs a power-on command to the corresponding electromagnet 410, triggering a marking action. After marking, a power-off command is output after a 0.5-1 second delay, ensuring clear marking and preventing false triggering. A sealed partition plate 45 is welded inside the rectangular slots 44, dividing the slot into an air chamber 46 and an installation chamber 47. The top of the jet duct 42 and the pressure sensors are both located within the air chamber 46. The partition plate 45 completely isolates the air system from the mechanical component installation area, preventing high-pressure gas leakage from affecting the operation of the mechanical components. Simultaneously, the air chamber 46 forms a relatively enclosed space, facilitating the stabilization and detection of pressure changes. A lifting plate 48 is slidably disposed inside the mounting cavity 47. An elastic dustproof sealing ring is fitted on the outer peripheral wall of the lifting plate 48. The outer ring of the dustproof sealing ring is tightly fitted with the inner wall of the mounting cavity 47. A DC electromagnet 410 is fixed to the bottom wall of the mounting cavity 47. The top of the electromagnet 410 is opposite to the lifting plate 48. When the electromagnet 410 is energized, it generates electromagnetic attraction, which can attract the lifting plate 48 to move downward. When the power is cut off, the attraction disappears, providing power for the lifting of the scriber I 49. A sliding hole is opened through the bottom of the connecting seat I 41 and the electromagnet 410. A dustproof guide sleeve is fixed in the hole. The scribe needle I 49 passes through and slides inside the dustproof guide sleeve. The top of the scribe needle I 49 is fixed to the lifting plate 48. A compression spring 412 is sleeved on the outer wall. The two ends of the spring abut against the spring seats on the lifting plate 48 and the electromagnet 410, respectively. The hard alloy material has high hardness and can leave clear and wear-resistant marks on the steel plate surface. The compression spring 412 is in a naturally extended state under normal conditions, pushing the lifting plate 48 to move upward, so that the bottom of the scribe needle I 49 is kept at a certain distance from the steel plate surface to avoid affecting the steel plate conveying. When the electromagnet 410 is energized and attracts the lifting plate 48, the spring is compressed and stores elastic potential energy. After the power is turned off, the elastic potential energy is released and pushes the lifting plate 48 and the scribe needle I 49 to reset. There are two scribe needles I 49, located on both sides of the jet duct 42.

[0055] When the steel plate passes through the adsorption roller 3, the high-strength magnetic field of the permanent magnet 34 penetrates the steel plate, generating a vertically downward adsorption force. This adsorption force forces the steel plate to adhere to the conveyor roller, physically suppressing the normal high-frequency vibration of the steel plate during high-speed conveying. This stabilizing effect provides a constant reference surface for subsequent defect detection, directly eliminating the interference of air gap fluctuations caused by plate vibration and ensuring the signal-to-noise ratio of pneumatic detection. During operation, after the steel plate is stabilized by the adsorption roller 3, it enters the detection area, and the airflow ejected from the jet duct 42 acts on the surface of the steel plate. Thanks to the vibration suppression by the adsorption roller 3, the background air pressure in the air chamber 46 remains highly stable. At this time, the defect scanning mechanism I4 mainly responds to small protrusions or flat foreign objects, using the high sensitivity of the airflow to capture micron-level height changes that are difficult for mechanical structures to perceive, solving the problem of missing subtle defects caused by mechanical inertia. ... At the same time, the defect scanning mechanism II5, as a complementary detection method, monitors large hard particles or sharp protrusions. While such foreign objects may evade pneumatic detection due to airflow diffraction caused by their irregular shape, their rigidity is sufficient to overcome the torsion spring resistance of the drive frame 54. Through the lever amplification effect of the L-shaped drive frame 54, the horizontal impact force is directly converted into a vertical marking action, compensating for the shortcomings of pneumatic methods in detecting highly permeable or irregularly shaped foreign objects. The two mechanisms complement each other on a magnetically stable basis, achieving blind-spot-free coverage of all types of defects.

[0056] The top of the connecting seat I 41 is fixed with a mounting cylinder 413 corresponding to each air chamber 46, communicating with and sealing the air chamber 46. The mounting cylinder 413 provides installation space for components such as the diaphragm 416 and terminals, and its communication with the air chamber 46 allows pressure changes within the air chamber 46 to directly affect the diaphragm 416. An elastic rubber diaphragm 416 is fixed inside the mounting cylinder 413, and a terminal I 417 is bonded to its top. A terminal II 418 is fixed to the top wall of the mounting cylinder 413 via an insulating seat. Under normal conditions, the two maintain a distance. The elastic rubber diaphragm 416 has good deformation capability. When the air pressure in the air chamber 46 increases, the diaphragm 416 bulges upward, causing terminal I 417 to contact terminal II 418, thus connecting the circuit. When the air pressure returns to normal, the diaphragm 416 resets, and the circuit is disconnected. The insulating seat prevents leakage between terminal II 418 and the mounting cylinder 413, ensuring circuit safety. Electromagnet 410 has its negative terminal connected to the negative terminal of the power supply, its positive terminal connected to terminal I 417, and terminal II 418 connected to the positive terminal of the power supply, forming a circuit. Its working principle is that when terminal I 417 and terminal II 418 are in contact, the circuit is complete, the electromagnet 410 is energized, generating attraction, triggering the marker action, thus realizing an automatic triggering chain of "air pressure change - mechanical deformation - circuit on / off - mechanical action". The inner wall of the mounting cylinder 413 is threadedly connected to the mounting tube 419. A limiting ring 414 is provided on the inner wall of the tube, and a clamping ring 415 is threadedly connected to the top. The diaphragm 416 is clamped between the two. The clamping force on the diaphragm 416 can be adjusted through the threaded connection of the mounting tube 419 and the clamping ring 415 to ensure the diaphragm 416's sealing performance. At the same time, the limiting ring 414 prevents the diaphragm 416 from excessively deforming under air pressure, which could lead to damage. The threaded connection also facilitates the replacement and maintenance of the diaphragm 416.

[0057] During operation, the steel plate enters the detection area after being stabilized by the adsorption roller 3. The airflow ejected from the jet duct 42 acts on the surface of the steel plate. At this time, the interaction between the airflow and the surface of the steel plate follows the principles of fluid mechanics. When the surface of the steel plate is flat, the airflow diffuses evenly, the air pressure in the air chamber 46 remains stable, the air pressure sensor has no abnormal signal output, the circuit is in the open state, and the compression spring 412 pushes the lifting plate 48 to keep the scriber I 49 in place. When there are foreign objects on the surface of the steel plate, the foreign objects hinder the diffusion of the airflow, causing the air pressure in the air chamber 46 to rise instantaneously. The air pressure pushes the diaphragm 416 to bulge upward, driving the terminals I 417 and II 41... Upon contact at step 8, the circuit is connected, and the electromagnet 410 is energized, generating electromagnetic attraction. This attraction overcomes the elastic force of the compression spring 412, causing the lifting plate 48 to move downwards. The scriber I 49 then moves downwards and contacts the steel plate surface, leaving a mark at the corresponding location of the foreign object. Once the foreign object moves away from the detection area with the steel plate, airflow diffusion returns to normal, the air pressure in the air chamber 46 decreases, and the diaphragm 416 resets under its own elasticity. Terminals I 417 and II 418 separate, the circuit is broken, the attraction of the electromagnet 410 disappears, and the compression spring 412 releases its elastic potential energy, pushing the lifting plate 48 and scriber I 49 upwards to reset, awaiting the next detection. The entire process achieves automatic detection and marking of foreign objects on the steel plate surface without manual intervention, improving detection efficiency and accuracy.

[0058] Example 2

[0059] Reference Figure 1 , Figures 7-10 This invention provides a new technical solution: an intelligent monitoring device for rolling mill equipment. In this embodiment, the defect scanning mechanism II5 is the core. It detects and marks foreign objects on the surface of steel plates through mechanical probing and transmission. The structure is reliable and does not require a complex electrical control system. Its working principle is to use the thrust of the foreign object on the mechanical structure to convert the horizontal force into the vertical force through the linkage transmission, thereby driving the marking component to move and realizing a pure mechanical triggering process of "mechanical contact - force transmission - mechanical marking". The specific structure and working principle are as follows.

[0060] The structure of the support component 2 and the adsorption roller 3 at the feed end of the rolling mill 1 is completely the same as that in Example 1, and their working principle is also the same. This ensures the smooth conveying of the steel plate and the pretreatment effect of ferromagnetic impurities on the surface, providing good preconditions for subsequent mechanical penetration testing. The defect scanning mechanism II 5 is fixedly installed between the two connecting seats 24 as the core detection component.

[0061] The connecting seat II51 of the defect scanning mechanism II5 is made of aluminum alloy. Both ends are bolted to the inner side of the connecting seat 24, and the bottom maintains a suitable distance from the steel plate surface. Its working principle is similar to that of the connecting seat I41. The aluminum alloy material is lightweight and corrosion-resistant, and the bolt connection facilitates disassembly and assembly. The appropriate installation height ensures effective contact between the detection component and the steel plate surface while avoiding obstruction of steel plate transport. A guide seat 52 is bolted to one side of the connecting seat II51. Guide holes are evenly spaced along the height direction on the guide seat 52, and a graphite dust cover is fixed inside the guide holes. The scriber II53 passes through and slides within the graphite dust cover. The graphite dust cover has both dustproof and self-lubricating functions. The graphite dust cover on the guide seat 52 provides a precise movement trajectory for the scriber II53, restricting its movement to vertical only, preventing deviation and inaccurate marking. The carbide scriber II53, with its high hardness, leaves clear marks on the steel plate surface.

[0062] One side of the connecting seat II 51 is also fixed with bolts to the rotating seat 56. The rotating seat 56 is connected to the L-shaped drive frame 54 via a rotating shaft. The rotating shaft is clearance-fitted and lubricated. The rotating seat 56 provides a fixed rotation fulcrum for the drive frame 54. The clearance fit and lubricating grease reduce the frictional resistance between the rotating shaft, the rotating seat 56, and the drive frame 54, ensuring that the drive frame 54 can rotate flexibly. The L-shaped structure can convert the horizontal thrust of foreign objects on the bottom of the drive frame 54 into the swing force of the drive frame 54 around the rotating shaft, realizing the conversion of the force direction. The bottom of the drive frame 54 extends 0.5mm above the surface of the steel plate, making slight contact with the steel plate. The extremely close distance ensures that foreign objects (regardless of the height or size of the protrusion) on the steel plate surface will contact the bottom of the drive frame 54 when passing by, generating thrust to trigger subsequent actions. At the same time, the slight contact will not scratch the surface of the steel plate, avoiding affecting the quality of the steel plate. The other end of the drive frame 54 is connected to the connecting rod 57 via a rotating shaft. The other end of the connecting rod 57 is connected to the rotating shaft at the top of the scriber II 53. The connecting rod 57 serves as a force transmission component, transmitting the mechanical energy generated when the drive frame 54 swings to the scriber II 53. The rotating shaft connection enables flexible transmission of motion, avoiding jamming. A rectangular opening 55 is provided on the top of the connecting seat II 51 corresponding to the position of the connecting rod 57. The rectangular opening 55 provides sufficient space for the swing of the connecting rod 57, avoiding interference between the connecting rod 57 and the connecting seat II 51 during the movement, and ensuring smooth force transmission. A torsion spring is fitted on the rotating shaft connecting the drive frame 54 and the rotating seat 56. One end of the torsion spring is fixed to the rotating seat 56, and the other end is fixed to the drive frame 54. Under normal conditions, the torsion spring is in a naturally extended state, so that the bottom end of the drive frame 54 maintains a distance of 0.5mm from the surface of the steel plate. When the foreign object moves away from the bottom end of the drive frame 54 with the steel plate, the drive frame 54 swings back quickly around the rotating shaft to reset under the combined action of the reset spring force of the torsion spring, its own weight, and the weight of the scriber II 53.

[0063] During operation, after the steel plate is stabilized by the adsorption roller 3, it moves along the conveying direction and enters the detection range of the defect scanning mechanism II 5. At this time, the bottom end of the drive frame 54 maintains slight contact with the surface of the steel plate. When there is a foreign object on the surface of the steel plate, the foreign object moves with the steel plate to below the drive frame 54, contacts the bottom end of the drive frame 54, and generates a horizontal thrust. According to the lever principle, this thrust causes the drive frame 54 to swing around the rotating shaft on the rotating seat 56, and the other end of the drive frame 54 is lifted upward. The swing of the drive frame 54 drives the connecting rod 57 to move through the rotating shaft. The connecting rod 57 converts the circular motion of the drive frame 54 into a vertical pulling force, which pulls the scribing needle II 53 downward along the guide hole of the guide seat 52. The bottom end of the scribing needle II 53 contacts the surface of the steel plate and leaves a clear mark at the position corresponding to the foreign object. When the foreign object moves away from the bottom of the drive frame 54 along with the steel plate, the drive frame 54 loses its horizontal thrust. Under the combined action of its own weight and the weight of the scriber II 53, it swings back around the axis to reset. The connecting rod 57 pushes the scriber II 53 upward along the guide hole as the drive frame 54 resets, restoring it to its normal position with a distance between it and the surface of the steel plate, thus completing one inspection and marking cycle.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An intelligent monitoring device for rolling mill equipment, characterized in that, include: Rolling mill (1); The support assembly (2) is fixed to the feed end of the rolling mill (1). The support assembly (2) includes a mounting bracket (21), a stud (22), a limiting nut (23), a connecting seat (24), and a locking nut (25). The mounting bracket (21) is fixedly connected to the rolling mill (1). The stud (22) is vertically fixed to the top of the mounting bracket (21). The limiting nut (23) and the locking nut (25) are both threaded onto the stud (22). The connecting seat (24) is sleeved on the stud (22) and sandwiched between the limiting nut (23) and the locking nut (25). An adsorption roller (3) is rotatably mounted on a support assembly (2). The adsorption roller (3) includes a drive shaft (31), a fixed rod (33), and a permanent magnet (34). The drive shaft (31) has a receiving cavity (32). One end of the fixed rod (33) is fixed to the receiving cavity (32), and the other end is fixed to the support assembly (2). The permanent magnet (34) is fixed to the outer wall of the fixed rod (33), and the magnetic pole direction is perpendicular to the steel plate. The defect monitoring device is fixed between two connecting seats (24) and is used to scan the upper surface of the steel plate and monitor foreign objects on the surface. When a foreign object is detected, it is automatically marked. When the steel plate passes through the adsorption roller (3), the permanent magnet (34) stabilizes the steel plate, and then the defect monitoring device completes the foreign object detection and marking to prevent impurities and foreign objects from entering the rolling mill (1).

2. The intelligent monitoring device for rolling mill equipment according to claim 1, characterized in that, The defect monitoring device includes a defect scanning mechanism I (4), which includes a connecting seat I (41), a jet duct (42), a connecting duct (43), and a pressure sensor. The connecting seat I (41) is fixed between two connecting seats (24). Multiple rectangular slots (44) are provided in the connecting seat I (41). The jet duct (42) passes through the bottom of the connecting seat I (41) and communicates with the rectangular slots (44). The connecting duct (43) is fixed to one side of the connecting seat I (41) and communicates with the multiple rectangular slots (44) through a pipe. The pressure sensor is located in the rectangular slots (44). High-pressure gas is ejected from the jet duct (42) through the connecting conduit (43) and the rectangular groove (44). When there are foreign objects on the surface of the steel plate, the airflow diffusion is blocked, and the air pressure in the rectangular groove (44) increases instantaneously. The air pressure sensor captures this change to trigger the marking action.

3. The intelligent monitoring device for rolling mill equipment according to claim 2, characterized in that, A partition plate (45) is fixedly provided inside the rectangular groove (44), which divides the rectangular groove (44) into an air chamber (46) and an installation chamber (47). The top end of the jet duct (42) extends into the air chamber (46). A lifting plate (48) is slidably provided inside the installation chamber (47). An electromagnet (410) is fixedly provided on the bottom wall of the installation chamber (47). Two scribers (49) are slidably provided through the bottom of the connecting seat I (41) and the electromagnet (410). The top end of the scribers (49) is fixedly connected to the lifting plate (48). A compression spring (412) is sleeved on the outer wall of the scribers (49). The two ends of the compression spring (412) abut against the lifting plate (48) and the electromagnet (410) respectively through spring seats. When the electromagnet (410) is energized, it attracts the lifting plate (48) and drives the scribe needle I (49) to move down to mark the foreign object. After the power is cut off, the compression spring (412) pushes the lifting plate (48) and the scribe needle I (49) to reset.

4. The intelligent monitoring device for rolling mill equipment according to claim 3, characterized in that, The top of the connecting seat I (41) is fixedly provided with an installation cylinder (413), the installation cylinder (413) is connected to the air chamber (46), a diaphragm (416) is fixedly provided inside the installation cylinder (413), a terminal block I (417) is fixedly provided on the top of the diaphragm (416), a terminal block II (418) is fixedly provided on the top wall of the installation cylinder (413), the negative pole of the electromagnet (410) is connected to the negative pole of the power supply through a wire, the positive pole of the electromagnet (410) is connected to the terminal block I (417) through a wire, and the terminal block II (418) is connected to the positive pole of the power supply through a wire; The increased air pressure in the air chamber (46) pushes the diaphragm (416) to bulge, causing terminal I (417) to contact terminal II (418) to connect the power supply circuit of the electromagnet (410), thereby realizing the automatic triggering of the marking action.

5. The intelligent monitoring device for rolling mill equipment according to claim 4, characterized in that, The mounting cylinder (413) is internally threaded with a mounting tube (419), and a limiting ring (414) is fixedly provided on the inner wall of the mounting tube (419). A clamping ring (415) is threadedly connected to the top end of the mounting tube (419), and the diaphragm (416) is sandwiched between the limiting ring (414) and the clamping ring (415). The clamping force on the diaphragm (416) can be adjusted by rotating the clamping ring (415) to ensure sealing, and the limiting ring (414) prevents the diaphragm (416) from being damaged by excessive deformation.

6. The intelligent monitoring device for rolling mill equipment according to any one of claims 1 to 5, characterized in that, The defect monitoring device also includes a defect scanning mechanism II (5), which includes a connecting seat II (51), a scribing needle II (53) and a drive frame (54). The connecting seat II (51) is fixed between two connecting seats (24). The scribing needle II (53) can slide up and down on one side of the connecting seat II (51). The drive frame (54) is rotatably disposed inside the connecting seat II (51) and contacts the surface of the steel plate. The drive frame (54) is connected to the scribing needle II (53) in a transmission connection. In this process, the foreign object on the steel plate swings with the conveying drive frame (54), and the drive frame (54) drives the scribing needle II (53) to move down through the transmission action to mark the foreign object on the steel plate.

7. The intelligent monitoring device for rolling mill equipment according to claim 6, characterized in that, A guide seat (52) is fixedly provided on one side of the connecting seat II (51). Guide holes are evenly opened on the guide seat (52) along the height direction. The scriber II (53) passes through and slides in the guide hole of the guide seat (52). The guide hole restricts the scriber II (53) to move only in the vertical direction, ensuring accurate marking position.

8. The intelligent monitoring device for rolling mill equipment according to claim 7, characterized in that, A rotating seat (56) is fixedly provided on one side of the connecting seat II (51). The driving frame (54) is L-shaped. The driving frame (54) is rotatably connected to one side of the rotating seat (56) through a rotating shaft. The bottom end of the driving frame (54) is in contact with the steel plate. The other end of the driving frame (54) is rotatably connected to a connecting rod (57) through a rotating shaft. The end of the connecting rod (57) away from the driving frame (54) is rotatably connected to the scriber II (53).

9. The intelligent monitoring device for rolling mill equipment according to claim 8, characterized in that, The top of the connecting seat II (51) has a rectangular opening (55), which corresponds to the position of the connecting rod (57). The rectangular opening (55) provides clearance for the swing of the connecting rod (57) and avoids motion interference between the connecting rod (57) and the connecting seat II (51).

10. The intelligent monitoring device for rolling mill equipment according to claim 1, characterized in that, The number of adsorption rollers (3) is at least two, and the two adsorption rollers (3) are arranged at intervals along the steel plate conveying direction, so that the two adsorption rollers (3) can achieve stable conveying of the steel plate.

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