A real-time detection device for a slit of a continuous casting billet

Abstract

The present application relates to continuous casting billet slit detection technical field, specifically to a kind of continuous casting billet slit real-time detection device, including rack, the rack is rotatably connected with multiple conveying rollers by roller shaft, the top of the rack is fixedly connected with fixed frame, and the fixed frame is equipped with detection mechanism;Lift base, mounting plate and stepped insert by rack drive, when stepped insert is contacted with slit, stepped insert no longer moves downward, until pressure sensor reaches the threshold value set, signal is transmitted to system by pressure sensor, and second motor is closed by system control, so that the transmission of tooth column and rack is stopped, then the width of slit is judged according to the depth of stepped insert insertion, if width is less than the threshold value set, it is determined that normal value, if width is greater than the threshold value set, it is determined that replacement value, if width is in threshold range, it is determined that warning value, then according to actual measurement situation, timely early warning, method is simple, management is convenient.

Description

Technical Field

[0001] This invention relates to the field of continuous casting billet cut detection technology, and in particular to a real-time detection device for continuous casting billet cuts. Background Technology

[0002] In the steel production process, after the continuous casting machine produces the continuously cast billet, it needs to be cut into billets that meet the delivery dimensions. During the billet cutting process, due to equipment or operational problems, the kerf in the billet becomes larger. A larger kerf means that more of the billet is oxidized and burned off, resulting in a lower metal yield and thus higher production costs. Typically, offline kerf measurement requires cutting a separate kerf on different beginning and end billets for kerf thickness measurement. This process also requires transporting the billets to a designated area to cool before measurement, which is cumbersome and cannot guarantee that the kerf will not change due to external forces during billet transport, making it impossible to measure and dynamically control the kerf in a timely manner.

[0003] Chinese patent CN205020777U discloses an online measuring device for the slit cut of continuously cast billets, comprising: a tower-shaped component, a connecting component, and a handle; wherein, the connecting component is fixed to the bottom of the tower-shaped component, and the handle is connected to the tower-shaped component through the connecting component. The measurement accuracy of the online measuring device for the slit cut is determined by setting the diameter variation range between adjacent tower layers; the smaller the diameter variation range between adjacent tower layers, the higher the measurement accuracy of the online measuring device for the slit cut.

[0004] In current technologies, the use of a tower-shaped component for online measurement of cut seams in continuously cast billets requires manual insertion and removal of the handle and connector. This is cumbersome and time-consuming in the high-temperature, high-dust environment of continuous casting, which may affect the efficiency of the measurement. Furthermore, when manually inserting the tower-shaped component, inconsistent operating angles and force can easily lead to deviations in the measurement position, affecting the accuracy of the cut seam width measurement.

[0005] Therefore, the present invention provides a real-time detection device for the cut seam of continuously cast billets. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the measurement position deviation caused by inconsistent operating angle and force affects the detection accuracy of the kerf width.

[0007] To address the aforementioned technical problems, this invention provides a real-time detection device for cut seams in continuously cast billets, comprising a frame on which multiple conveying rollers are rotatably connected via roller shafts. A fixed frame is fixedly connected to the top of the frame, and a detection mechanism is provided on the fixed frame. The detection mechanism includes a stepped insert. A mounting plate is installed on the top of the stepped insert. A lifting mechanism is provided on the fixed frame, and the lifting mechanism includes a rack. A base is fixedly connected to the bottom of the rack, and the base is mounted on the top of the mounting plate via the mounting mechanism. A pressure sensor is provided between the mounting plate and the stepped insert.

[0008] In one embodiment of the present invention, the lifting mechanism further includes two connecting plates fixed to the top of the fixed frame, and a gear column is rotatably connected between the two connecting plates via a rotating shaft; a second motor is fixed to the side wall of one of the connecting plates, the output shaft of the second motor is fixed to one end of the rotating shaft, and the gear column meshes with a rack; two vertical rods are symmetrically fixed to the top of the base, and the vertical rods are slidably connected to the fixed frame.

[0009] In one embodiment of the present invention, the stepped insert includes multiple stepped layers, which are connected together in sequence; the thickness decreases from top to bottom along the thickness direction, and the thickness of the stepped insert includes 2mm, 3mm, 4mm, 5mm and 6mm respectively; the stepped insert is made of heat-resistant metal material.

[0010] In one embodiment of the present invention, the mounting mechanism includes a threaded rod rotatably connected to a base via a bearing. One end of the threaded rod is fixedly connected to a screw block, and the other end of the threaded rod is threadedly connected to a trapezoidal block. A second cavity is provided inside the base, and the trapezoidal block is slidably connected to the inner wall of the second cavity via a limiting rod. Two movable plates are symmetrically connected inside the second cavity via a reset assembly. Triangular blocks are fixedly connected to the side walls of the movable plates near the trapezoidal blocks, and the inclined surfaces of the triangular blocks respectively engage with the trapezoidal blocks. Multiple insert blocks are fixedly connected to the bottom of each movable plate. A first cavity is provided inside the mounting plate, and the insert blocks are all inserted into the first cavity.

[0011] In one embodiment of the present invention, the reset assembly includes four sliding pillars fixed to the inner wall of the second cavity. Each sliding pillar is fitted with a spring on its outer side, and the two ends of the spring are respectively fixed to the side wall of the movable plate near the triangular block and the inner wall of the second cavity.

[0012] In one embodiment of the present invention, two fixed plates are fixedly connected to the bottom of the frame, and a bidirectional ball screw is rotatably connected between the two fixed plates via a bearing. Two base plates are threadedly connected to the bidirectional ball screw, and multiple limiting rollers are rotatably connected to the two base plates. A first motor is fixedly connected to one of the fixed plates, and the output shaft of the first motor is fixedly connected to one end of the bidirectional ball screw. One end of the base plate is inclined outward.

[0013] In one embodiment of the present invention, two guide rods are fixedly connected between the two fixed plates, and the base plate is slidably connected to the guide rods.

[0014] In one embodiment of the present invention, an infrared monitoring probe is installed at the bottom end of the fixed frame near the toothed column, and a drive mechanism is provided at one end of the conveying roller. The infrared monitoring probe is electrically connected to the drive mechanism.

[0015] In one embodiment of the present invention, a first distance sensor is installed at the bottom of the end of the fixing frame away from the infrared monitoring probe; a side plate is fixedly connected to the top of the end of the rack away from the toothed column, and a second distance sensor is fixedly connected to the side plate.

[0016] In one embodiment of the present invention, a protective cover is fixedly attached to the top of one end of the fixing frame near the toothed column, and both the toothed rack and the toothed column are disposed inside the protective cover, which is made of stainless steel.

[0017] The technical solution of the present invention has the following advantages compared with the prior art:

[0018] The present invention discloses a real-time detection device for cut seams in continuously cast billets. This device utilizes a stepped insert, where a second motor's output shaft drives a rotating shaft, which in turn rotates a gear column. The gear column then moves a rack, causing it to rise and fall. This movement, in turn, causes the base, mounting plate, and stepped insert to rise and fall. During this process, the stepped insert insert is inserted into the cut seam. Once in contact with the seam, the insert stops moving downwards until a pressure sensor reaches a set threshold. The pressure sensor then transmits a signal to the system, which controls the second motor to shut off, stopping the transmission of the gear column and rack. The device then determines the width of the cut seam based on the insertion depth of the stepped insert. If the width is less than the set threshold, it is considered normal; if it is greater than the threshold, it is considered a replacement value; and if the width is within the threshold range, it is considered a warning value. The device provides timely warnings based on actual measurements. The method is simple and easy to manage.

[0019] The present invention discloses a real-time detection device for cut seams in continuously cast billets. By setting trapezoidal blocks and triangular blocks, a rotating block drives a threaded rod to rotate, which in turn drives the trapezoidal block to move. During this movement, the trapezoidal block moves away from the two triangular blocks, and the triangular blocks, no longer compressed by the trapezoidal blocks, quickly reset under the action of a spring. The triangular blocks then drive a movable plate to reset, which in turn drives an insert block to reset and be removed from the first cavity. The stepped insert and mounting plate can then be removed. For installation, the rotating block needs to be rotated in the opposite direction, thus achieving rapid installation and disassembly.

[0020] The present invention discloses a real-time detection device for cut seams in continuous casting billets. By setting a limiting roller, starting a first motor, the output shaft of the first motor drives a bidirectional ball screw to rotate, which in turn drives two base plates to move towards the center. The base plates then drive the limiting roller to move until the limiting roller is adjusted to a suitable position, thus facilitating the centering and limiting of the continuous casting billet. Attached Figure Description

[0021] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a perspective view of the limiting roller in this invention;

[0024] Figure 3 This is a perspective view of the first distance sensor and the second distance sensor in this invention;

[0025] Figure 4 This is a perspective view of the rack in this invention;

[0026] Figure 5 This is a cross-sectional view of the stepped insert in this invention;

[0027] Figure 6 This is a cross-sectional view of the base in this invention;

[0028] Figure 7 This is a perspective view of the insert block in this invention;

[0029] Explanation of reference numerals in the accompanying drawings: 1. Frame; 11. Conveyor roller; 2. Fixed plate; 21. Limiting roller; 22. First motor; 23. Base plate; 24. Guide rod; 25. Bidirectional ball screw; 3. Fixed bracket; 31. First distance sensor; 32. Infrared monitoring probe; 33. Stepped insert; 331. Mounting plate; 332. Pressure sensor; 333. First cavity; 334. Insert block; 34. Rack; 341. Side plate; 342. Second distance sensor; 343. Connecting plate; 344. Toothed column; 345. Second motor; 35. Protective cover; 36. Base; 361. Rotating block; 362. Threaded rod; 363. Second cavity; 364. Trapezoidal block; 365. Triangular block; 366. Movable plate; 367. Sliding column; 368. Spring; 369. Limiting rod; 37. Vertical rod. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0031] Please see Figure 1 - Figure 7 This invention provides a real-time detection device for cut seams in continuously cast billets, comprising a frame 1, on which multiple conveying rollers 11 are rotatably connected via roller shafts; a fixed frame 3 is fixedly connected to the top of the frame 1, and a detection mechanism is provided on the fixed frame 3; the detection mechanism includes a stepped insert 33; an mounting plate 331 is installed on the top of the stepped insert 33; a lifting mechanism is provided on the fixed frame 3, the lifting mechanism includes a rack 34, and a base 36 is fixedly connected to the bottom of the rack 34; the base 36 is installed on the top of the mounting plate 331 via the mounting mechanism; a pressure sensor 332 is provided between the mounting plate 331 and the stepped insert 33.

[0032] In the steel production process, after the continuous casting machine produces the continuously cast billet, it needs to be cut into billets that meet the delivery dimensions. During the billet cutting process, due to equipment or operational problems, the kerf in the billet becomes larger. A larger kerf means that more of the billet is oxidized and burned off, resulting in a lower metal yield and thus higher production costs. Typically, offline kerf measurement requires cutting a separate kerf on different beginning and end billets for kerf thickness measurement. This process also requires transporting the billets to a designated area to cool before measurement, which is cumbersome and cannot guarantee that the kerf will not change due to external forces during billet transport, making it impossible to measure and dynamically control the kerf in a timely manner.

[0033] When the detection mechanism provided by this invention is used in the continuous casting billet inspection process, the stepped insert 33 is aligned with the cut and inserted into the measurement through the lifting mechanism. The stepped insert 33 is inserted into the cut during the lifting process until the pressure sensor 332 reaches the set threshold. Then, the second motor 345 is turned off, and the transmission of the toothed column 344 and the rack 34 is stopped. Then, the width of the cut is determined according to the insertion depth of the stepped insert 33. If the width is less than the set threshold, it is determined to be a normal value. If the width is greater than the set threshold, it is determined to be a replacement value. If the width is within the threshold range, it is determined to be a warning value. Then, a timely warning is issued based on the actual measurement situation. The method is simple and easy to manage.

[0034] Furthermore, such as Figure 1 and Figure 4 As shown, the lifting mechanism also includes two connecting plates 343 fixed to the top of the fixed frame 3, and a gear column 344 is rotatably connected between the two connecting plates 343 via a rotating shaft; a second motor 345 is fixed to the side wall of one of the connecting plates 343, and the output shaft of the second motor 345 is fixed to one end of the rotating shaft, and the gear column 344 meshes with the rack 34; two vertical rods 37 are symmetrically fixed to the top of the base 36, and the vertical rods 37 are slidably connected to the fixed frame 3.

[0035] When the lifting mechanism provided by this invention needs to lift the stepped insert 33, the second motor 345 needs to be activated. The output shaft of the second motor 345 drives the rotating shaft to rotate, which in turn drives the gear column 344 to rotate. The gear column 344 then drives the rack 34 to move, thus lifting the rack 34. The rack 34 then drives the base 36, the mounting plate 331, and the stepped insert 33 to lift. During the lifting process, the stepped insert 33 is inserted into the slit. When the stepped insert 33 contacts the slit, it stops moving. The device moves downwards until the pressure sensor 332 reaches the set threshold. The pressure sensor 332 transmits the signal to the system, which then controls the second motor 345 to shut down, thereby stopping the transmission of the toothed column 344 and the rack 34. The width of the cut is then determined based on the insertion depth of the stepped insert 33. If the width is less than the set threshold, it is considered a normal value. If the width is greater than the set threshold, it is considered a replacement value. If the width is within the threshold range, it is considered a warning value. The device then issues timely warnings based on the actual measurement. The method is simple and easy to manage.

[0036] Furthermore, such as Figure 4 As shown, the stepped insert 33 includes multiple stepped layers, which are connected together in sequence; the thickness decreases from top to bottom along the thickness direction, and the thickness of the stepped insert 33 includes 2mm, 3mm, 4mm, 5mm and 6mm respectively; the stepped insert 33 is made of heat-resistant metal material.

[0037] The stepped insert 33 provided by this invention increases in thickness from bottom to top, with thicknesses of 2mm, 3mm, 4mm, 5mm, and 6mm respectively. For small billets, a measured dimension less than 3mm is considered normal, between 3mm and 4mm is a warning value, and greater than 4mm is a replacement value. For large billets, a measured dimension less than 4mm is considered normal, between 4mm and 5mm is a warning value, and greater than 5mm is a replacement value. Each stepped layer is provided with an inclined surface to facilitate fine-tuning of the position of the continuously cast billet, ensuring that the stepped insert 33 moves downward along the kerf and preventing it from being misaligned and inserted into the kerf, thus affecting the accuracy of the detection.

[0038] Furthermore, such as Figures 5 to 7 As shown, the mounting mechanism includes a threaded rod 362 rotatably connected to a base 36 via a bearing. One end of the threaded rod 362 is fixedly connected to a rotating block 361, and the other end of the threaded rod 362 is threadedly connected to a trapezoidal block 364. A second cavity 363 is provided inside the base 36. The trapezoidal block 364 is slidably connected to the inner wall of the second cavity 363 via a limiting rod 369. Two movable plates 366 are symmetrically connected inside the second cavity 363 via a reset assembly. Triangular blocks 365 are fixedly connected to the side walls of the movable plates 366 near the trapezoidal block 364, and the inclined surfaces of the triangular blocks 365 respectively cooperate with the trapezoidal blocks 364. Multiple inserts 334 are fixedly connected to the bottom of each movable plate 366. A first cavity 333 is provided inside the mounting plate 331, and the inserts 334 are all inserted into the first cavity 333.

[0039] When using the installation mechanism provided by this invention, the stepped insert 33 will wear down after a period of use, which may affect the detection accuracy, thus requiring replacement of the stepped insert 33. By rotating the rotating block 361, the threaded rod 362 rotates, which in turn drives the trapezoidal block 364 to move. During this movement, the trapezoidal block 364 moves away from the two triangular blocks 365, and the triangular blocks 365, no longer compressed by the trapezoidal block 364, quickly reset under the action of the reset component. The triangular blocks 365 then drive the movable plate 366 to reset. When the 366-driven insertion block 334 is reset, the insertion block 334 is pulled out of the first cavity 333, allowing the stepped insert 33 and mounting plate 331 to be removed. When installation is required, the rotating block 361 needs to be rotated in the opposite direction. The rotating block 361 drives the threaded rod 362 to rotate, which in turn drives the trapezoidal block 364 to move. During the movement, the trapezoidal block 364 presses against the two triangular blocks 365, compressing the reset assembly. The triangular blocks 365 then drive the movable plate 366 to move, which in turn drives the insertion block 334 to move and insert it into the first cavity 333, completing the installation.

[0040] Furthermore, such as Figure 7 As shown, the reset assembly includes four sliding pillars 367 fixed to the inner wall of the second cavity 363. Each sliding pillar 367 is fitted with a spring 368 on its outer side. The two ends of the spring 368 are respectively fixed to the side wall of the movable plate 366 near the triangular block 365 and the inner wall of the second cavity 363.

[0041] When the reset assembly provided by the present invention is used, during installation, the spring 368 is stretched by the compression of the movable plate 366. During disassembly, the triangular block 365 loses the compression of the trapezoidal block 364 and quickly resets under the action of the spring 368. The triangular block 365 drives the movable plate 366 to reset, and the movable plate 366 drives the insertion block 334 to reset and withdraw from the first cavity 333.

[0042] Furthermore, such as Figure 1 and Figure 2 As shown, the bottom of the frame 1 is fixedly connected to two fixed plates 2, and a bidirectional ball screw 25 is rotatably connected between the two fixed plates 2 via bearings. Two base plates 23 are threadedly connected to the bidirectional ball screw 25, and multiple limiting rollers 21 are rotatably connected to the two base plates 23. A first motor 22 is fixedly connected to one of the fixed plates 2, and the output shaft of the first motor 22 is fixedly connected to one end of the bidirectional ball screw 25. One end of the base plate 23 is inclined outward.

[0043] When using the limiting roller 21 provided by the present invention, if the continuous casting billet deviates during the conveying process, the stepped insert 33 may not be able to be smoothly inserted into the cut, which not only makes it impossible to detect, but also easily damages the stepped insert 33. Therefore, it is necessary to adjust the distance between the two limiting rollers 21 according to the width of the continuous casting billet. By turning on the first motor 22, the output shaft of the first motor 22 drives the bidirectional ball screw 25 to rotate. The bidirectional ball screw 25 drives the two base plates 23 to move towards the center. The base plates 23 drive the limiting roller 21 to move until the limiting roller 21 is adjusted to a suitable position, so as to realize the centering and limiting of the continuous casting billet.

[0044] Furthermore, such as Figure 2 As shown, two guide rods 24 are fixedly connected between the two fixed plates 2, and the base plate 23 is slidably connected to the guide rods 24.

[0045] When the guide rod 24 provided by the present invention is in use, the base plate 23 slides on the guide rod 24 during the movement of the base plate 23, and the guide rod 24 limits the movement of the base plate 23 in the horizontal direction.

[0046] Furthermore, such as Figure 3As shown, an infrared monitoring probe 32 is installed at the bottom of the fixed frame 3 near the toothed column 344, and a drive mechanism is provided at one end of the conveying roller 11. The infrared monitoring probe 32 is electrically connected to the drive mechanism.

[0047] The infrared monitoring probe 32 provided by this invention is used to detect the seam. When the continuous casting billet is being transported, the infrared monitoring probe 32 transmits the signal to the system, which then controls the drive mechanism to close and stop the transport. Then the lifting mechanism and the detection mechanism are started for detection.

[0048] Furthermore, such as Figure 3 As shown, a first distance sensor 31 is installed at the bottom of the end of the fixed frame 3 away from the infrared monitoring probe 32; a side plate 341 is fixedly connected to the top of the end of the rack 34 away from the tooth post 344, and a second distance sensor 342 is fixedly connected to the side plate 341.

[0049] The first distance sensor 31 provided by the present invention is used to monitor the distance L1 from the fixed frame 3 to the continuous casting billet. The second distance sensor 342 is used to monitor the distance L2 of the movement of the stepped insert 33. The height of the stepped insert 33 is D. After calculation, the depth h of the stepped insert 33 into the kerf can be obtained. The expression of h is h = L2 - L1 + D. Then, the thickness of the corresponding stepped insert 33 is determined according to the size of h, and the width range of the kerf can be obtained.

[0050] Furthermore, such as Figure 1 As shown, a protective cover 35 is fixed to the top of one end of the fixing frame 3 near the toothed column 344. Both the toothed rack 34 and the toothed column 344 are located inside the protective cover 35, which is made of stainless steel.

[0051] The protective cover 35 provided by the present invention is used to protect welding slag and other impurities during use, and to prevent impurities from splashing onto the toothed column 344 and the toothed rack 34, affecting the fit between the toothed column 344 and the toothed rack 34, and making it impossible to measure the cut.

[0052] Working principle: During the continuous casting billet inspection and conveying process, when the infrared monitoring probe 32 detects the seam, the infrared monitoring probe 32 transmits a signal to the system, which then controls the drive mechanism to close and stop the conveying. Then, the lifting mechanism aligns the stepped insert 33 with the seam and inserts it for measurement. When the stepped insert 33 needs to be lifted, the second motor 345 is activated. The output shaft of the second motor 345 drives the rotating shaft to rotate, which in turn drives the gear column 344 to rotate. The gear column 344 then drives the rack 34 to move, thus lifting the rack 34. The rack 34, in turn, drives the base 36, mounting plate 331, and stepped insert 33 to move. During the lifting and lowering process, the stepped insert 33 is inserted into the slit. When the stepped insert 33 contacts the slit, it stops moving downward until the pressure sensor 332 reaches the set threshold. The pressure sensor 332 transmits the signal to the system, which then controls the second motor 345 to shut down, thereby stopping the transmission of the toothed column 344 and the rack 34. The width of the slit is then determined based on the insertion depth of the stepped insert 33. If the width is less than the set threshold, it is considered a normal value. If the width is greater than the set threshold, it is considered a replacement value. If the width is within the threshold range, it is considered a warning value. The system then issues timely warnings based on actual measurements. The method is simple and easy to manage.

[0053] The stepped insert 33 increases in thickness from bottom to top, with thicknesses of 2mm, 3mm, 4mm, 5mm, and 6mm respectively. For small billets, a measured dimension less than 3mm is considered normal, between 3mm and 4mm is a warning value, and greater than 4mm is a replacement value. For large billets, a measured dimension less than 4mm is considered normal, between 4mm and 5mm is a warning value, and greater than 5mm is a replacement value. Each stepped layer is provided with an inclined surface to facilitate fine-tuning of the position of the continuously cast billet, ensuring that the stepped insert 33 moves downward along the cut and preventing it from being misaligned and inserted into the cut, thus affecting the accuracy of the detection.

[0054] During detection, the first distance sensor 31 is used to monitor the distance L1 from the fixed frame 3 to the continuous casting billet, and the second distance sensor 342 is used to monitor the distance L2 of the movement of the stepped insert 33. The height of the stepped insert 33 is D. After calculation, the depth h of the stepped insert 33 into the kerf can be obtained. The expression for h is h = L2 - L1 + D. Then, the thickness of the corresponding stepped insert 33 is determined according to the value of h, and the width range of the kerf can be obtained.

[0055] The stepped insert 33 will wear out after a period of use, which may affect the detection accuracy, thus requiring replacement. Rotating the rotating block 361 drives the threaded rod 362 to rotate, which in turn drives the trapezoidal block 364 to move. During this movement, the trapezoidal block 364 moves away from the two triangular blocks 365. Releasing the pressure from the trapezoidal block 364, the triangular blocks 365 quickly reset under the action of the spring 368. This resets the movable plate 366, which in turn drives the insert 3... 34. The reset movement insert 334 is pulled out of the first cavity 333, and the stepped insert 33 and the mounting plate 331 can be removed. When installation is required, the rotating block 361 needs to be rotated in the opposite direction. The rotating block 361 drives the threaded rod 362 to rotate, and the threaded rod 362 drives the trapezoidal block 364 to move. During the movement, the trapezoidal block 364 squeezes the two triangular blocks 365, and the spring 368 is compressed. The triangular blocks 365 drive the movable plate 366 to move, and the movable plate 366 drives the insert 334 to move and insert it into the first cavity 333, thus completing the installation.

[0056] If the continuous casting billet deviates during the conveying process, the stepped insert 33 may not be able to be inserted smoothly into the cut, which will not only make it impossible to detect, but also easily damage the stepped insert 33. Therefore, it is necessary to adjust the distance between the two limiting rollers 21 according to the width of the continuous casting billet. By turning on the first motor 22, the output shaft of the first motor 22 drives the bidirectional ball screw 25 to rotate. The bidirectional ball screw 25 drives the two base plates 23 to move towards the center. The base plates 23 drive the limiting rollers 21 to move until the limiting rollers 21 are adjusted to a suitable position, so as to achieve the centering and limiting of the continuous casting billet.

[0057] Obviously, the above embodiments are merely illustrative examples for clarity and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A real-time detection device for cut seams in continuously cast billets, comprising a frame (1), wherein a plurality of conveying rollers (11) are rotatably connected to the frame (1) via roller shafts, and a fixing frame (3) is fixedly connected to the top of the frame (1), wherein a detection mechanism is provided on the fixing frame (3); characterized in that: The detection mechanism includes a stepped insert (33); a mounting plate (331) is installed on the top of the stepped insert (33); a lifting mechanism is provided on the fixed frame (3), the lifting mechanism includes a rack (34), a base (36) is fixedly connected to the bottom of the rack (34), and the base (36) is installed on the top of the mounting plate (331) through the mounting mechanism; a pressure sensor (332) is provided between the mounting plate (331) and the stepped insert (33). The lifting mechanism also includes two connecting plates (343) fixed to the top of the fixed frame (3), and a gear column (344) is rotatably connected between the two connecting plates (343) through a rotating shaft; a second motor (345) is fixed to the side wall of one of the connecting plates (343), and the output shaft of the second motor (345) is fixed to one end of the rotating shaft, and the gear column (344) meshes with the rack (34); two vertical rods (37) are symmetrically fixed to the top of the base (36), and the vertical rods (37) are slidably connected to the fixed frame (3); An infrared monitoring probe (32) is installed at the bottom of the fixed frame (3) near the toothed column (344), and a drive mechanism is provided at one end of the conveying roller (11). The infrared monitoring probe (32) is electrically connected to the drive mechanism. A first distance sensor (31) is installed at the bottom of the end of the fixed frame (3) away from the infrared monitoring probe (32); a side plate (341) is fixedly connected to the top of the end of the rack (34) away from the tooth column (344), and a second distance sensor (342) is fixedly connected to the side plate (341). The first distance sensor (31) is used to monitor the distance L1 from the fixed frame (3) to the continuous casting billet, and the second distance sensor (342) is used to monitor the distance L2 of the movement of the stepped insert (33). The height of the stepped insert (33) is D. The depth h of the stepped insert (33) into the cut is calculated. The expression of h is h=L2-L1+D. Then, the thickness of the corresponding stepped insert (33) is determined according to the size of h, and the width range of the cut is obtained.

2. The real-time detection device for cut seams in continuously cast billets according to claim 1, characterized in that: The stepped insert (33) includes multiple stepped layers, which are connected together in sequence; the thickness decreases from top to bottom along the thickness direction, and the thickness of the stepped insert (33) includes 2mm, 3mm, 4mm, 5mm and 6mm respectively; the stepped insert (33) is made of heat-resistant metal material.

3. The real-time detection device for cut seams in continuously cast billets according to claim 2, characterized in that: The mounting mechanism includes a threaded rod (362) rotatably connected to a base (36) via a bearing. One end of the threaded rod (362) is fixedly connected to a rotating block (361), and the other end of the threaded rod (362) is threadedly connected to a trapezoidal block (364). A second cavity (363) is provided inside the base (36). The trapezoidal block (364) is slidably connected to the inner wall of the second cavity (363) via a limiting rod (369). Inside the second cavity (363) Two movable plates (366) are symmetrically connected by a reset assembly. Triangular blocks (365) are fixed to the side walls of the movable plates (366) near the trapezoidal block (364). The inclined surfaces of the triangular blocks (365) respectively cooperate with the trapezoidal block (364). Multiple inserts (334) are fixed to the bottom of the movable plates (366). A first cavity (333) is opened in the mounting plate (331), and the inserts (334) are all inserted into the first cavity (333).

4. The real-time detection device for cut seams in continuously cast billets according to claim 3, characterized in that: The reset assembly includes four sliding pillars (367) fixed to the inner wall of the second cavity (363). Each sliding pillar (367) is fitted with a spring (368) on its outer side. The two ends of the spring (368) are fixed to the side wall of the movable plate (366) near the triangular block (365) and the inner wall of the second cavity (363), respectively.

5. The real-time detection device for cut seams in continuously cast billets according to claim 4, characterized in that: Two fixed plates (2) are fixedly connected to the bottom of the frame (1). A bidirectional ball screw (25) is rotatably connected between the two fixed plates (2) via bearings. Two base plates (23) are threadedly connected to the bidirectional ball screw (25). Multiple limiting rollers (21) are rotatably connected to the two base plates (23). A first motor (22) is fixedly connected to one of the fixed plates (2). The output shaft of the first motor (22) is fixedly connected to one end of the bidirectional ball screw (25). One end of the base plate (23) is inclined outward.

6. The real-time detection device for cut seams in continuously cast billets according to claim 5, characterized in that: Two guide rods (24) are fixed between the two fixed plates (2), and the base plate (23) is slidably connected to the guide rods (24).

7. The real-time detection device for cut seams in continuously cast billets according to claim 6, characterized in that: The top of the fixed frame (3) near the toothed column (344) is fixed with a protective cover (35). The toothed column (344) and the toothed column (344) are both located inside the protective cover (35), which is made of stainless steel.

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