Continuous casting machine support roller rotation detection apparatus and detection method

Abstract

A continuous casting machine support roller rotation detection apparatus (30), used for detecting the rotation state of a support roller (15) of a continuous casting machine. The support roller (15) can be driven by a strand to rotate when driving rollers (14) drive the strand to move. The detection apparatus (30) comprises: a support (100), a contact wheel (200), and a torque sensor (300), wherein the contact wheel (200) is rotatably mounted on the support (100), and the torque sensor (300) is connected to the contact wheel (200); when the contact wheel (200) moves relative to the support roller (15) and is in contact with the support roller (15), the torque sensor (300) is used for detecting a torque data set of the contact wheel (200), so as to determine, on the basis of the torque data set, whether the support roller (15) rotates.

Description

A device and method for detecting the rotation of support rolls in a continuous casting machine Cross-references to related applications

[0001] This application claims priority to Chinese patent application No. 2024118388439, filed on December 13, 2024, the entire contents of which are incorporated herein by reference.

[0002] This application disclosure claims priority to Chinese patent application No. 2024118388439, filed on December 13, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a device for detecting the rotation of a support roll in a continuous casting machine, and more particularly to a device and method for detecting the rotation of a support roll in a continuous casting machine. Background Technology

[0004] Surface quality is a crucial indicator of billet product quality. Since the billet undergoes the entire process from the crystallizer to the casting machine exit during casting, ensuring proper rotation of the support rollers is essential for guaranteeing billet surface quality. Poor support roller rotation easily leads to a large number of scratches on the billet surface, failing to meet customer requirements. Furthermore, because this defect is highly likely to occur in batches, it results in significant economic losses. Related technologies can ensure proper support roller rotation by periodically replacing the sector sections. However, this method is time-consuming and impacts output. Moreover, the rotation status of the support rollers cannot be obtained in a timely manner, often resulting in situations where the support rollers of the sector sections replaced according to the casting tonnage are still rotating well, causing unnecessary economic losses. Summary of the Invention

[0005] This disclosure aims to at least partially solve the technical problems of long production organization time and unnecessary economic losses caused by section changeover. To this end, this disclosure provides a device and method for detecting the rotation of the support rolls in a continuous casting machine.

[0006] In a first aspect, this disclosure provides a continuous casting machine support roll rotation detection device according to one or more embodiments, used to detect the rotation state of the support roll of the continuous casting machine, wherein the support roll can be rotated by the casting billet while the drive roll moves the casting billet, including:

[0007] The system includes a bracket, a contact wheel, and a torque sensor, wherein the contact wheel is rotatably mounted on the bracket, and the torque sensor is connected to the contact wheel.

[0008] When the contact wheel moves relative to and contacts the support roller, the torque sensor is used to detect the torque data set of the contact wheel, so as to determine whether the support roller is rotating based on the torque data set.

[0009] Secondly, this disclosure provides a method for detecting the rotation of a support roll in a continuous casting machine, which is applied to a device for detecting the rotation of a support roll in a continuous casting machine. The method is used to detect the rotation state of the support roll in the continuous casting machine. The support roll can be rotated by the billet while the drive roll is driving the billet. The device for detecting the rotation of the support roll in the continuous casting machine includes a bracket, a contact wheel, and a torque sensor. The contact wheel is rotatably mounted on the bracket, and the torque sensor is connected to the contact wheel.

[0010] The detection method includes:

[0011] Obtain the torque data set of the contact roller;

[0012] The torque data set is used to determine whether the support roller is rotating. Attached Figure Description

[0013] The above and various other advantages and benefits of the present invention will become clear to those skilled in the art from the following detailed description of preferred embodiments.

[0014] Figure 1 shows a schematic diagram of the structure of a sector segment provided in one or more embodiments of this disclosure.

[0015] Figure 2 shows a magnified view of a portion of point A in Figure 1.

[0016] Figure 3 shows a schematic diagram of the detection device in Figure 1.

[0017] Figure 4 shows a graph illustrating the torque value variation when the support roller rotates well, according to one or more embodiments of this disclosure.

[0018] Figure 5 shows a graph illustrating the torque value variation when the support roller rotates poorly, according to one or more embodiments of this disclosure.

[0019] Figure 6 shows a partial structural schematic diagram of Figure 3.

[0020] Figure 7 shows a schematic diagram of the cooperation between the detection device and the sector segment provided in one or more embodiments of this disclosure.

[0021] Figure 8 shows a schematic diagram of the detection device in Figure 1.

[0022] Figure 9 shows a schematic diagram of the detection device in Figure 1.

[0023] Figure 10 shows a cross-sectional view of Figure 9.

[0024] Figure 11 shows a force analysis diagram of the contact wheel contacting the support roller according to one or more embodiments of this disclosure.

[0025] Figure 12 shows an exploded view of the structure of the first mounting component in Figure 9.

[0026] Figure 13 shows a schematic diagram of the relationship between the roll gap length and the detection device provided in one or more embodiments of this disclosure.

[0027] Figure 14 shows a schematic diagram of the relationship between the included angle θ formed by straight lines L1 and L2 provided in one or more embodiments of this disclosure.

[0028] Figure 15 shows one of the flowcharts of a continuous casting machine support roll rotation detection device according to one or more embodiments of the present disclosure;

[0029] Figure 16 shows a second schematic flowchart of a continuous casting machine support roll rotation detection device according to one or more embodiments of the present disclosure;

[0030] Figure 17 shows a third schematic flowchart of a continuous casting machine support roll rotation detection device according to one or more embodiments of the present disclosure;

[0031] Reference numerals: 10-fan-shaped segment, 11-vertical segment, 12-arc-shaped segment, 13-horizontal segment, 14-drive roller, 15-support roller, 15a-first support roller, 15b-second support roller, 16-inner arc, 17-outer arc, 20-guide rod, 30-detection device, 100-bracket, 110-first mounting component, 111-mounting part, 111a-mounting cavity, 112b-cover plate, 112-cantilever part, 113-rotating shaft, 114-guide hole, 120-second Mounting components, 121-side plate, 122-base plate, 130-elastic component, 140-telescopic component, 141-sleeve, 142-first telescopic rod, 143-second telescopic rod, 150-limiting component, 151-adjusting bolt, 152-adjusting nut, 200-contact wheel, 210-wheel body, 211-groove, 220-contact ring, 221-protrusion, 300-torque sensor, 400-protector, 410-outer shaft, 420-inner shaft, 500-conductive slip ring. Detailed Implementation

[0032] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. This description is merely illustrative of the basic principles of the invention and is not intended to limit it.

[0033] A continuous casting machine is a metallurgical device that solidifies molten steel and presses it down to form a billet. During casting, the billet undergoes a complete process from the crystallizer to the machine outlet, passing through a fan-shaped section. This fan-shaped section consists of multiple drive rollers and multiple pairs of support rollers. Some sections have multiple pairs of drive rollers; each pair includes two opposing drive rollers, and each pair of support rollers includes two opposing support rollers. There is a roll gap between the two drive rollers and the two support rollers. The inner drive rollers and support rollers form the inner arc of the fan-shaped section, while the outer drive rollers and support rollers form the outer arc. The drive rollers are driven by a motor. During casting, the drive rollers of the inner and outer arcs guide the billet by rolling and dragging the dummy bar. The support rollers press down on the billet, and the billet's movement drives the support rollers to rotate. Together, the drive rollers and support rollers ensure the surface quality and dimensional accuracy of the billet.

[0034] Surface quality is a crucial indicator of billet product quality. The drive roller is rotated by a motor, while the support roller is passively rotated by the billet. Therefore, ensuring proper rotation of the support roller is essential for guaranteeing the surface quality of the billet. If the support roller rotates poorly, a large number of scratch defects are likely to appear on the billet surface. These defects can propagate to downstream hot rolling and cold rolling processes, resulting in obvious strip-like defects on the surface of the finished coil, failing to meet customer requirements. Furthermore, because these defects are prone to occur in large quantities, the economic losses can be substantial.

[0035] In related technologies, the support rollers can be kept in good rotation by periodically replacing the sector segments. However, on the one hand, the production organization time for replacing the segments is long and affects the output. On the other hand, since the rotation status of the support rollers cannot be obtained in time, there are often cases where the support rollers of the sector segments that are replaced according to the casting tonnage are still rotating well, resulting in unnecessary economic losses.

[0036] To improve the above-mentioned technical problems to a certain extent, this application provides a continuous casting machine support roll rotation detection device and detection method, which can detect the rotation state of the support roll of the continuous casting machine, so that the sector section can be selectively replaced according to the rotation state of the support roll without the need for periodic replacement, thereby reducing production organization time, ensuring output and reducing economic losses.

[0037] The embodiments of this application will now be described with reference to the accompanying drawings:

[0038] Referring to Figures 1 and 2, this application embodiment provides a continuous casting machine support roller rotation detection device 30 for detecting the rotation state of the support roller 15 of the continuous casting machine. The support roller 15 can be rotated by the casting billet while the drive roller 14 moves the casting billet. The continuous casting machine support roller rotation detection device 30 provided in this application embodiment can detect the rotation state of the support roller 15 of the continuous casting machine, thereby allowing selective replacement of the sector section 10 based on the rotation state of the support roller 15, eliminating the need for periodic replacement, thus reducing production organization time, ensuring output, and reducing economic losses.

[0039] It should be noted that the inner arc 16 and outer arc 17 of the sector segment 10 have multiple support rollers 15. In this embodiment, the detection process of the detection device 30 and any support roller 15 in some embodiments is described, and the same applies to other support rollers 15.

[0040] Please refer to Figures 1-3. In this embodiment of the application, the continuous casting machine support roller rotation detection device 30 includes a bracket 100, a contact wheel 200, and a torque sensor 300. The contact wheel 200 is rotatably mounted on the bracket 100, and the torque sensor 300 is connected to the contact wheel 200.

[0041] In some embodiments, when the contact wheel 200 moves relative to and contacts the support roller 15, the torque sensor 300 is used to detect a set of torque data of the contact wheel 200 to determine whether the support roller 15 is rotating based on the set of torque data.

[0042] The bracket 100 is the main body of the entire testing device 30, providing a mounting base for other components of the testing device 30 and protecting them. Furthermore, all other components are integrated into the bracket 100, allowing the testing device 30 to form a complete unit, facilitating its installation and transportation.

[0043] The contact wheel 200 includes a wheel body 210 and a contact ring 220 wrapped around the wheel body 210. The contact ring 220 is in direct contact with the support roller 15. The contact ring 220 can be made of soft materials such as rubber to avoid rigid collisions with the support roller 15 during movement as much as possible. At the same time, the material of the contact wheel 200 should have wear-resistant and corrosion-resistant properties to improve service life.

[0044] The torque sensor 300 is used to detect torque. Since the torque sensor 300 is connected to the contact wheel 200, it can detect the torque value of the contact wheel 200. To make torque detection more stable, a conductive slip ring 500 can be provided between the contact wheel 200 and the torque sensor 300. The use of the torque sensor 300 and the conductive slip ring 500 is a common technique in the art and will not be described in detail here.

[0045] It is evident that both the contact wheel 200 and the support roller 15 have circular cross-sections. The movement of the contact wheel 200 relative to the support roller 15 means that a point on the outer surface of the contact wheel 200 moves along a portion of the arc surface of the support roller 15. Throughout the process, the contact wheel 200 is in contact with the support roller 15. Therefore, the contact wheel 200 provides torque to the support roller 15 during its movement. Due to the mutual interaction of forces, the support roller 15 also provides torque to the contact wheel 200. In other words, the torque value of the contact wheel 200 is also the torque value of the support roller 15.

[0046] It is understood that the position of the support roller 15 in the sector segment 10 is fixed. When the billet moves in the sector segment 10, it will contact the support roller 15 and move relative to the support roller 15. Therefore, the movement of the contact wheel 200 relative to the support roller 15 and contact with the support roller 15 in the embodiment of this application can be regarded as simulating the process of the billet moving relative to the support roller 15 and contacting the support roller 15.

[0047] The contact wheel 200 needs to complete the process of contacting the support roller 15, moving along a portion of the arc surface of the support roller 15, and then leaving the support roller 15 within a certain time period. The torque data set consists of multiple torque values ​​collected by the torque sensor 300 within this time period. The torque data set of the support roller 15 is different under different rotation states. Therefore, the rotation status of the support roller 15 can be determined based on the torque data set. Operators can determine whether the sector section 10 needs to be replaced based on the rotation status of the support roller 15, thus eliminating the need for periodic replacement of the sector section 10, reducing production organization time, ensuring output, and reducing economic losses.

[0048] Please refer to Figures 1 and 2. Continuous casting machines are equipped with dummy bar 20. The function of the dummy bar 20 is to guide the billet continuously pulled out of the crystallizer, separate it from the billet after the pulling process, and also to accommodate and reload the dummy bar 20. During operation, the dummy bar 20 is located between the inner arc 16 and the outer arc 17 of the sector segment 10. The drive rollers 14 of the inner arc 16 and the outer arc 17 guide the billet movement by rolling and dragging the dummy bar 20. Therefore, in order to move the detection device 30 so that the contact wheel 200 moves relative to the support roller 15, the detection device 30 can be mounted on the dummy bar 20. In this way, the drive roller 14 drives the dummy bar 20 to move, which in turn moves the contact wheel 200 relative to the support roller 15. During the movement of the dummy bar 20 in the sector segment 10, the contact wheel 200 can sequentially contact each support roller 15, thereby obtaining the torque values ​​of each support roller 15. Of course, guided by the dummy bar 20, the running direction of the detection device 30 is consistent with the casting direction of the continuous casting machine.

[0049] Furthermore, the dummy bar 20 operates when the continuous casting machine is in operation, and the detection device 30 is installed on the dummy bar 20. Therefore, when it is necessary to detect the rotation status of the support roller 15, there is no need to stop the machine, and the rotation status of the support roller 15 can be detected online, thereby further reducing production organization time and ensuring output.

[0050] Because the dummy bar 20 consists of two opposing chains connected by several spaced-apart support rods, it has a significant amount of hollow space, making it inconvenient to directly install the detection device 30. However, to ensure the accuracy and condition of the continuous casting machine, and to improve the quality of the cast billet and production safety, an online roll gap meter is often installed between the two chains on the dummy bar 20 to detect the roll gap of the sector segment 10. Therefore, to facilitate the installation of the detection device 30, it can also be directly installed on the online roll gap meter, eliminating the need for a separate installation structure for the detection device 30 on the dummy bar 20, thus saving time and effort.

[0051] Of course, referring to Figure 2, since both the inner arc 16 and the outer arc 17 of the sector segment 10 have multiple support rollers 15, two detection devices 30 can be set on the spindle rod 20. In some embodiments, one is set near the inner arc 16, and its contact wheel 200 contacts the support roller 15 of the inner arc 16. The other is set near the outer arc 17, and its contact wheel 200 contacts the support roller 15 of the outer arc 17. Thus, the rotation state of the support rollers 15 of the inner arc 16 and the outer arc 17 can be detected simultaneously.

[0052] Please refer to Figures 1-3. In some embodiments, the detection device 30 further includes a controller, which is electrically connected to the torque sensor 300. The torque sensor 300 detects the torque value of the support roller 15 at preset time intervals. The controller is used to receive multiple torque values. If the difference between two adjacent torque values ​​is greater than a first set value, it is determined that the support roller 15 is rotating.

[0053] During the movement of the contact wheel 200 relative to and in contact with the support roller 15, the torque sensor 300 detects the torque value of the support roller 15 at preset time intervals, thereby obtaining a torque data set. The torque data set can include two, three, or more torque values, without limitation.

[0054] When the support roller 15 can rotate, during the process of the contact wheel 200 contacting and moving relative to the support roller 15, the torque value of the contact wheel 200 will gradually increase until it reaches a certain torque value that can drive the support roller 15 to rotate. At this time, the support roller 15 starts to rotate, and the torque value drops rapidly until the rotation measurement of the support roller 15 ends and the torque value drops to 0. During this process, the contact wheel 200 and the bracket 100 remain relatively stationary.

[0055] When the support roller 15 starts to rotate, the torque value of the contact wheel 200 will change abruptly. As a result, the difference between two adjacent torque values ​​will become very large before and after the support roller 15 starts to rotate. Therefore, when the controller calculates that the difference between two adjacent torque values ​​is greater than the first set value, it indicates that the torque value has changed abruptly, and thus it can be determined that the support roller 15 has rotated.

[0056] In some implementations, the torque sensor 300 can detect the torque value of the support roller 15 every 100ms-500ms, and the first set value can be 0.1Nm to 0.5Nm. Of course, the first set value will vary for different continuous casting machines and different support rollers, and can be set according to the actual situation.

[0057] In some implementations, the controller is also configured to determine that the support roller 15 is dead if the torque value is greater than or equal to a second set value.

[0058] When the support roller 15 is a dead roller, it cannot rotate or can only rotate slightly. Therefore, the torque value driving the dead roller to rotate can be considered infinite. In order to detect dead rollers, a second set value can be set. During the process of contacting and moving relative to the support roller 15, if the torque value of the contact wheel 200 is greater than or equal to the second set value, the support roller 15 can be determined to be a dead roller and needs to be replaced immediately.

[0059] In some embodiments, the support rollers 15 that can rotate include well-lubricated support rollers 15 and support rollers 15 with poor rotation, i.e., wrinkled rollers. The torque required to drive the well-lubricated support rollers 15 to rotate is smaller, while the torque required to drive the wrinkled rollers to rotate is larger. Therefore, different torques are required to drive the support rollers 15 in different states to rotate. A larger torque value can be selected from the torque values ​​required to drive the wrinkled rollers to rotate as the critical value for judging the wrinkled rollers and dead rollers. This critical value is the second set value.

[0060] In some implementations, the second set value can be 2.7 Nm to 3 Nm.

[0061] In some embodiments, the controller is also configured to determine that the support roller 15 is a pleated roller if the torque value is greater than or equal to a third set value, wherein in some embodiments, the third set value is less than a second set value.

[0062] When the support roller 15 is a wrinkled roller, although it can be driven to rotate, it is prone to becoming a dead roller. Furthermore, the required driving torque for a wrinkled roller is relatively large, and during the rotation driven by the cast billet, it is still easy to scratch the billet due to improper rotation. Therefore, when a wrinkled roller appears, the sector section 10 should be replaced promptly. To detect wrinkled rollers, a third setting value can be set. During the contact wheel 200's contact with and relative movement to the support roller 15, if the torque value of the contact wheel 200 is greater than or equal to the third setting value, then the support roller 15 can be determined to be a wrinkled roller. Of course, the third setting value is less than the second setting value.

[0063] It should be explained that the evaluation of a well-lubricated support roller 15 and a wrinkling roller is rather vague and lacks quantitative standards. Therefore, before testing, a support roller 15 should be selected as a reference support roller, and the torque value that drives the reference support roller to rotate should be used as the third set value. If the driving torque value is less than the third set value, the support roller 15 is judged to be rotating well. If the driving torque value is greater than or equal to the third set value, the support roller 15 is judged to be wrinkled. The selection of the reference support roller should be determined by the on-site operators based on their experience.

[0064] In some implementations, the third set value can be 2.4 Nm to 2.7 Nm.

[0065] In some embodiments, the detection device 30 further includes a protector 400 having an outer shaft 410 and an inner shaft 420 disposed within the outer shaft 410. The inner shaft 420 is connected to the torque sensor 300, and the outer shaft 410 is connected to the bracket 100. When the torque value is greater than or equal to a fourth set value, the inner shaft 420 can rotate relative to the outer shaft 410 to cause the contact wheel 200 to rotate relative to the support roller 15. In some embodiments, the fourth set value is less than the maximum range of the torque sensor 300.

[0066] Since the torque sensor 300 has a limited range, while the driving torque value of the dead roller is considered infinite, if the torque value exceeds the maximum range of the torque sensor 300, it will cause damage to the torque sensor 300. Therefore, a protector 400 can be installed to protect the torque sensor 300.

[0067] Since the inner shaft 420 is connected to the torque sensor 300, and the torque sensor 300 is connected to the contact wheel 200, the inner shaft 420, torque sensor 300, and contact wheel 200 can be considered as a whole. When the torque value is greater than or equal to the fourth set value, the inner shaft 420 can rotate relative to the outer shaft 410, causing the contact wheel 200 to rotate relative to the support roller 15. This causes the torque value of the contact wheel 200 to gradually decrease until the measurement ends. The fourth set value can be the maximum range of the protector 400. Of course, the fourth set value is less than the maximum range of the torque sensor 300. That is, before the torque value reaches the maximum range of the torque sensor 300, the contact wheel 200 rotates relative to the support roller 15, causing the torque value to gradually decrease, thereby protecting the torque sensor 300.

[0068] The fourth setting value can be the same as the second setting value. In this way, when the torque value detected by the torque sensor 300 reaches the second setting value, the controller determines that the support roller 15 is dead, and the inner shaft 420 rotates relative to the outer shaft 410, so that the torque value gradually decreases.

[0069] Since the support roller 15 needs to be replaced when it is wrinkled, the fourth setting value can be the same as the third setting value. In this way, when the torque value detected by the torque sensor 300 reaches the third setting value, the inner shaft 420 rotates relative to the outer shaft 410, causing the torque value to gradually decrease. In this case, since the torque sensor 300 cannot detect the second setting value, there is no need to determine if the roller is dead. Whether it is a dead roller or a wrinkled roller, the torque value will reach the third setting value when the contact wheel 200 contacts and moves relative to it. At this time, the controller can determine that the support roller 15 is not rotating properly and needs to be replaced promptly.

[0070] In some embodiments, the maximum range of the torque sensor 300 can be 18 Nm to 22 Nm, and the fourth set value can be 10 Nm to 14 Nm. The protector 400 can be a damping shaft 113. The structure and working principle of the damping shaft 113 are common knowledge in this technical field and will not be described in detail here.

[0071] Next, the rotation state of the support roller 15 will be explained using the torque value change curve. In some embodiments, the range of the torque sensor 300 is set to L, the range of the protector 400 is set to K, L≥K, and the fourth set value is the same as the third set value for example:

[0072] Please refer to Figure 4. When the support roller 15 is rotating well, as the contact wheel 200 contacts the support roller 15, the torque value gradually increases until it reaches the torque value M0 that drives the support roller 15 at time t. At this time, the support roller 15 starts to rotate, and the torque value drops rapidly until the rotation measurement of the support roller 15 ends. During this process, the contact wheel 200 and the bracket 100 remain relatively stationary.

[0073] Please refer to Figure 5. When the support roller 15 is in an abnormal rotation state (such as a wrinkled roller or a dead roller), as the contact wheel 200 contacts the support roller 15, the torque value gradually increases to the range K of the protector 400 at time t1. At this time, the contact wheel 200 drives the torque sensor 300 and the inner shaft 420 to start rotating together. Until the rotation measurement of the support roller 15 ends at time t2, the contact wheel 200 and the torque sensor 300 and the inner shaft 420 driven by it are relatively stationary with respect to the bracket 100. At this time, the torque value gradually decreases to the initial state.

[0074] The specific structure of the support 100 will be explained next:

[0075] Referring to Figures 3 and 6, in some embodiments, the bracket 100 includes a first mounting member 110, a second mounting member 120, and an elastic member 130. The contact wheel 200 is mounted on the first mounting member 110, and the elastic member 130 is disposed between the first mounting member 110 and the second mounting member 120 and can be compressed when the contact wheel 200 contacts the drive roller 14.

[0076] The contact wheel 200, torque sensor 300, and protector 400 are all mounted on the first mounting member 110, and the second mounting member 120 is used to connect to the derrick 20 or the housing of the online roll gaper. In some embodiments, the second mounting member 120 can be connected to the housing of the online roll gaper by means of screwing, riveting, etc., and there is no limitation on this.

[0077] Referring to Figures 6 and 7, during the operation of the sector segment 10, the drive roller 14 rotates and presses down, then recovers after pressing. When the dummy bar 20 passes the drive roller 14, the roll gap narrows. Therefore, an elastic element 130 is provided between the first mounting member 110 and the second mounting member 120. The extension and retraction direction of the elastic element 130 is consistent with the roll gap direction, which is perpendicular to the casting direction of the continuous casting machine. Thus, when the contact wheel 200 contacts the drive roller 14, the first mounting member 110 and the second mounting member 120 move relative to each other, compressing the elastic element 130 to its maximum. When the contact wheel 200 leaves the drive roller 14, the elastic element 130 releases, allowing the contact wheel 200 to contact the next support roller 15.

[0078] Please refer to Figure 7. When the contact wheel 200 just contacts the support roller 15, the contact wheel 200 and the support roller 15 have an overlap of Δh in the roller gap direction. Δh must be greater than 0 so that after the elastic element 130 is compressed and then released, the contact wheel 200 can contact the next support roller 15.

[0079] Referring to Figure 6, in some embodiments, the bracket 100 further includes a telescopic member 140, which is telescopically disposed between the first mounting member 110 and the second mounting member 120, and an elastic member 130 is mounted on the telescopic member 140.

[0080] The elastic element 130 is mounted on the telescopic element 140, thereby providing guidance for the extension and retraction of the elastic element 130. In some embodiments, the elastic element 130 may be a spring, and the telescopic element 140 may include a sleeve 141 and a first telescopic rod 142, the first telescopic rod 142 being telescopically disposed in the sleeve 141, the sleeve 141 being connected to a first mounting member 110, and the first telescopic rod 142 being connected to a second mounting member 120. During the compression and release of the elastic element 130, the first telescopic rod 142 also extends and retracts within the sleeve 141.

[0081] Two elastic elements 130 can be provided, with the two elastic elements 130 located on both sides of the first mounting member 110. Similarly, two telescopic elements 140 are also provided, corresponding one-to-one with the two elastic elements 130. To improve the guiding effect on the elastic elements 130, the bracket 100 also includes two second telescopic rods 143 located between the two elastic elements 130. The first mounting member 110 has a guide hole 114. One end of the second telescopic rod 143 is fixedly connected to the second mounting member 120, and the other end passes through the guide hole 114. That is, during the compression and release process of the elastic element 130, the second telescopic rod 143 moves within the guide hole 114. This further guides the extension and retraction of the elastic element 130, thereby minimizing the risk of the contact wheel 200 becoming misaligned during the compression and release process, thus affecting the contact effect with the support roller 15.

[0082] Of course, as shown in Figure 8, in other embodiments, four elastic elements 130 can also be provided, and four telescopic elements 140 can also be provided, corresponding one-to-one with the four elastic elements 130. In this way, a better guiding effect can also be achieved.

[0083] Furthermore, in order to make the contact ring 220 easy to maintain and replace, and easy to disassemble and maintain, the outer ring of the wheel body 210 can be provided with multiple grooves 211, and the inner ring of the contact ring 220 is provided with multiple protrusions 221 that mate with the grooves 211 one by one. The protrusions 221 are engaged in the grooves 211, which can achieve a tight fit between the contact ring 220 and the wheel body 210, effectively preventing the contact ring 220 from sliding relative to the wheel body 210.

[0084] Please refer to Figures 9 and 10. In some embodiments, the first mounting member 110 includes a connected mounting portion 111 and a cantilever portion 112. A contact wheel 200 is mounted on the mounting portion 111. The second mounting member 120 includes a base plate 122 and two side plates 121 disposed opposite to each other on both sides of the base plate 122. One end of the cantilever portion 112 away from the mounting portion 111 is hinged to the two side plates 121 via a pivot 113. An elastic member 130 is disposed between the cantilever portion 112 and the base plate 122.

[0085] Please refer to Figure 11. As mentioned above, when the contact wheel 200 just contacts the support roller 15, the overlap Δh between the contact wheel 200 and the support roller 15 in the roller gap direction must be greater than 0. Therefore, the support roller 15 will give the contact wheel 200 an overturning force F1 and a compressive force F2. However, if the Δh is large, it will result in a large overturning force of the support roller 15 on the contact wheel 200, and thus a large resultant force of the overturning force F1 and the compressive force F2. This makes it easy for the contact wheel 200 to get stuck between two adjacent support rollers 15, causing the detection device 30 to be unable to continue moving. Since the end of the cantilever 112 away from the mounting part 111 is hinged to the two side plates 121 through the pivot 113, the cantilever 112 can drive the mounting part 111 to rotate freely around the pivot 113. Therefore, during the movement of the contact wheel 200 relative to the support roller 15, the mounting part 111 will rotate slightly to adapt to the arc surface of the support roller 15, so that the contact wheel 200 can continue to move along the support roller 15, thereby avoiding the contact wheel 200 from getting stuck as much as possible. During this process, the elastic element 130 will be compressed by the pressure. When the contact wheel 200 leaves the previous support roller 15, the elastic element 130 is released, and the mounting part 111 returns to the initial position to detect the next support roller 15.

[0086] In some embodiments, please refer to Figures 10 and 12. The base plate 122 is connected to the derrick 20 or the housing of the online roll gaper. The mounting part 111 has a mounting cavity 111a. The torque sensor 300 and the protector 400 are both disposed in the mounting cavity 111a. The contact wheel 200 is located outside the mounting cavity 111a. A cover plate 112b is provided at the opening of the mounting cavity 111a to close the mounting cavity 111a, thereby reducing interference from moisture, dust and other substances.

[0087] In some embodiments, the bracket 100 further includes a limiting member 150, which is fixedly disposed between the cantilever portion 112 and the second mounting member 120. The limiting member 150 and the elastic member 130 are disposed on both sides of the rotating shaft 113, and the elastic member 130 is located on the side of the rotating shaft 113 closer to the cantilever portion 112.

[0088] The limiting member 150 and the elastic member 130 are placed on both sides of the rotating shaft, together forming the swing motion structure of the cantilever 112. When the elastic member 130 is released, the rotation arc of the cantilever 112 can be limited by the limiting member 150, thereby avoiding the excessive rotation arc of the cantilever 112 from causing the contact wheel 200 to overlap too much with the next support roller 15, which would increase the risk of the contact wheel 200 getting stuck.

[0089] Referring to Figure 13, in some embodiments, the support roller 15 includes a first support roller 15a and a second support roller 15b disposed opposite to each other, with a roller gap between the first support roller 15a and the second support roller 15b. When the contact wheel 200 contacts the first support roller 15a, the distance between the axis of the rotating shaft 113 and the axis of the contact wheel 200 satisfies the following formula:

[0090] G(mm)≤L(mm)×cosα+R(mm)+H(mm)

[0091] In some embodiments: G is the roll gap, L is the distance between the axis of the rotating shaft 113 and the axis of the contact wheel 200, α is the angle between the cantilever portion 112 and the roll gap direction, R is the radius of the contact wheel 200, and H is the distance between the axis of the rotating shaft 113 and the second support roller 15b.

[0092] In some embodiments, the first support roller 15a and the second support roller 15b are a pair of support rollers 15 in the sector segment 10, and the same applies to other pairs of support rollers 15 in the sector segment 10. Furthermore, this embodiment is illustrated using the case where the contact wheel 200 contacts the first support roller 15a as an example. When the contact wheel 200 contacts the second support roller 15b, H in the above formula represents the distance between the axis of the rotating shaft 113 and the first support roller 15a. Only when the above formula is satisfied can the contact wheel 200 be guaranteed to contact the support roller 15 as much as possible.

[0093] The roll gap value of the continuous casting machine is different in different production modes. The limit component 150 can be set to an adjustable height. In this way, before starting the inspection, the height of the limit component 150 can be adjusted to change the value of α to match different roll gaps.

[0094] In some embodiments, please refer to Figure 10. The limiting member 150 includes an adjusting bolt 151 and two adjusting nuts 152. The two adjusting nuts 152 are respectively fixedly disposed on the cantilever part 112 and the base plate 122. The two ends of the adjusting bolt 151 are respectively screwed to the two adjusting nuts 152. The adjusting bolt 151 and the two adjusting nuts 152 are driven by threads, so that the overall height of the limiting member 150 can be adjusted.

[0095] Please refer to Figure 14. In some embodiments, the axis of the contact wheel 200 is connected to the axis of the support roller 15 to be tested to form a straight line L1, and the axis of the contact wheel 200 is connected to the axis of the rotating shaft 113 to form a straight line L2. L1 and L2 intersect to form an included angle θ. In some embodiments, the included angle θ can be 10° < θ < 70°.

[0096] When L1 and L2 are collinear, i.e., θ = 0°, the contact wheel 200 will experience the maximum resultant force F, making the detection device 30 prone to damage. When θ < 0°, an excessive overturning force F1 will cause the contact wheel 200 to drive the support 100 to move in the opposite direction to the operating direction of the detection device 30, and the cantilever 112 will rigidly collide with the limit block, resulting in the detection device 30 overturning and being damaged. Therefore, to ensure the normal operation of the detection device 30, θ > 0° must be satisfied, which can be achieved by finely adjusting the height of the limit block.

[0097] In some implementations, θ can be 15°, 25°, 35°, 45°, or 55°, and there is no limitation thereto.

[0098] Referring to Figure 14, in some embodiments, when the contact wheel 200 contacts the support roller 15, the contact wheel 200 and the support roller 15 have an overlap amount Δh in the roll gap direction, and the overlap amount Δh is 5mm to 40mm.

[0099] When the contact wheel 200 contacts the support roller 15, that is, when the contact wheel 200 just contacts the support roller 15. Please refer to Figure 1. The sector segment 10 includes a vertical segment 11, an arc segment 12, and a horizontal segment 13. When the detection device 30 runs to the horizontal segment 13, under the gravity of the guide rod 20, the guide rod 20 will be close to the outer arc 17. Therefore, in order to ensure that the contact wheel 200 can also contact the support roller 15 of the inner arc 16 in the horizontal segment 13, the overlap Δh between the contact wheel 200 and the support roller 15 is 5mm to 40mm.

[0100] In some implementations, the overlap Δh can be 10mm, 15mm, 20mm, 25mm, or 35mm, and there is no limitation thereto.

[0101] Based on the same inventive concept, this application also provides a method for detecting the rotation of a continuous casting machine support roller, applied to a continuous casting machine support roller rotation detection device 30, used to detect the rotation state of the support roller 15 of the continuous casting machine. The support roller 15 can be driven to rotate by the casting billet when the drive roller 14 drives the casting billet. The continuous casting machine support roller rotation detection device 30 includes a bracket 100, a contact wheel 200, and a torque sensor 300. The contact wheel 200 is rotatably mounted on the bracket 100, and the torque sensor 300 is connected to the contact wheel 200. Referring to Figure 15, the method for detecting the rotation of the continuous casting machine support roller includes:

[0102] Step S100: Obtain the torque data set of the contact roller.

[0103] The torque data set of the contact roller can be obtained through the torque sensor 300. The contact roller 200 completes the process of contacting the support roller 15, moving along a part of the arc surface of the support roller 15, and then leaving the support roller 15 within a certain time period. The torque data set consists of multiple torque values ​​collected by the torque sensor 300 within that time period.

[0104] Step S200: Determine whether the support roller 15 is rotating based on the torque data set.

[0105] The torque data set of the support roller 15 varies depending on its rotation state. Therefore, the rotation state of the support roller 15 can be determined by analyzing its torque data set. Operators can then determine whether the sector section 10 needs to be replaced based on the rotation state of the support roller 15, eliminating the need for periodic replacements. This reduces production organization time, ensures output, and minimizes economic losses.

[0106] Referring to Figure 16, in some embodiments, the step of determining whether the support roller 15 is rotating based on the torque data set includes:

[0107] Step S210: Obtain the torque value of the support roller 15 at preset time intervals; in some embodiments, multiple torque values ​​form a torque data group.

[0108] During the movement and contact between the contact wheel 200 and the support roller 15, the torque sensor 300 detects the torque value of the support roller 15 at preset time intervals, thereby obtaining a torque data set. The torque data set can include two, three, or more torque values, and there is no limitation thereto. In some embodiments, the preset time can be 100ms-500ms.

[0109] Step S220: Determine whether the difference between two adjacent torque values ​​is greater than the first set value.

[0110] When the support roller 15 can rotate, during the process of the contact wheel 200 contacting and moving relative to the support roller 15, the torque value of the contact wheel 200 will gradually increase until it reaches a certain torque value that can drive the support roller 15 to rotate. At this time, the support roller 15 starts to rotate, and the torque value will drop rapidly until the rotation measurement of the support roller 15 ends and the torque value drops to 0. During this process, the contact wheel 200 and the bracket 100 remain relatively stationary.

[0111] When the support roller 15 starts to rotate, the torque value of the contact wheel 200 will change abruptly, and the difference between two adjacent torque values ​​will become very large. Therefore, it is necessary to determine whether the difference between two adjacent torque values ​​is greater than the first set value, so as to infer whether the support roller 15 has rotated.

[0112] In some implementations, the first set value can be 0.1 Nm to 0.5 Nm.

[0113] Step S230: If the difference between two adjacent torque values ​​is greater than the first set value, it is determined that the support roller 15 rotates.

[0114] When the controller calculates that the difference between two adjacent torque values ​​is greater than the first set value, it indicates that the torque value has changed abruptly, and thus it can be determined that the support roller 15 has rotated.

[0115] Referring to Figure 17, in some embodiments, the step of determining whether the support roller 15 is rotating based on the torque data set further includes:

[0116] Step S240: Determine whether the torque value is greater than or equal to the second set value.

[0117] When the support roller 15 is a dead roller, it cannot rotate or can only rotate slightly. Therefore, the torque value driving the dead roller can be considered infinite. In order to detect dead rollers, a second set value can be set. By judging whether the torque value is greater than or equal to the second set value, it can be inferred whether the support roller is a dead roller.

[0118] In some implementations, the second set value can be 2.7 Nm to 3 Nm.

[0119] Step S250: If the torque value is greater than or equal to the second set value, the support roller 15 is determined to be a dead roller.

[0120] If the torque value of the contact wheel 200 is greater than or equal to the second set value during the contact and relative movement of the support roller 15, the support roller 15 can be determined to be a dead roller and needs to be replaced immediately.

[0121] In some embodiments, the support rollers 15 that can rotate include well-lubricated support rollers 15 and support rollers 15 with poor rotation, i.e., wrinkled rollers. The torque required to drive the well-lubricated support rollers 15 to rotate is smaller, while the torque required to drive the wrinkled rollers to rotate is larger. Therefore, different torques are required to drive the support rollers 15 in different states to rotate. A larger torque value can be selected from the torque values ​​required to drive the wrinkled rollers to rotate as the critical value for judging wrinkled rollers and dead rollers. This critical value is the second set value.

[0122] In some embodiments, the step of determining whether the support roller 15 is rotating based on the torque data set further includes:

[0123] Step S260: Determine whether the torque value is greater than or equal to the third set value.

[0124] When the support roller 15 is a wrinkled roller, although it can be driven to rotate, it is easy for the wrinkled roller to become a dead roller. Furthermore, the wrinkled roller requires a large driving torque, and during the rotation driven by the cast billet, it is still prone to scratching the billet due to improper rotation. Therefore, when a wrinkled roller appears, the sector section 10 should be replaced promptly. To detect wrinkled rollers, a third set value can be set. By judging whether the torque value is greater than or equal to the third set value, it can be inferred whether the support roller is a dead roller.

[0125] In some implementations, the third set value can be 2.4 Nm to 2.7 Nm.

[0126] Step S270: If the torque value is greater than or equal to the third set value, then the support roller 15 is determined to be a wrinkle roller. In some embodiments, the third set value is less than the second set value.

[0127] During the process of contacting and moving relative to the support roller 15, if the torque value of the contact wheel 200 is greater than or equal to the third set value, the support roller 15 can be determined to be a wrinkling roller. Of course, the third set value is less than the second set value.

[0128] It should be explained that the evaluation of well-lubricated support roller 15 and wrinkling roller is rather vague and lacks quantitative standards. Therefore, before testing, a support roller 15 needs to be selected as a reference support roller, and the torque value driving the rotation of the reference support roller is used as a third set value. If the driving torque value is less than the third set value, the support roller 15 is judged to be in good rotation condition. If the driving torque value is greater than or equal to the third set value, the support roller 15 is judged to be wrinkled. The selection of the reference support roller needs to be determined by the on-site operators based on experience.

[0013] The above description describes specific embodiments of this specification, which, together with other embodiments, are covered within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than those in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily follow the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also feasible or advantageous.

[0014] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0015] It should be understood that the above-described embodiments are merely illustrative of the invention and not intended to limit the invention. Those skilled in the art can implement the invention in other ways without departing from its basic spirit and characteristics. The scope of the invention is defined by the appended claims, and any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included therein.

Claims

1. A device for detecting the rotation of a support roll in a continuous casting machine, comprising: The bracket (100), contact wheel (200), and torque sensor (300) are provided, wherein the contact wheel (200) is rotatably mounted on the bracket (100), and the torque sensor (300) is connected to the contact wheel (200). When the contact wheel (200) moves relative to and contacts the support roller (15), the torque sensor (300) is used to detect the torque data set of the contact wheel (200) to determine whether the support roller (15) is rotating based on the torque data set.

2. The continuous casting machine support roll rotation detection device according to claim 1, wherein, The detection device (30) also includes a controller, which is electrically connected to the torque sensor (300); The torque sensor (300) detects the torque value of the support roller (15) once every preset time interval; The controller is used to receive multiple torque values. If the difference between two adjacent torque values ​​is greater than a first set value, it is determined that the support roller (15) rotates.

3. The continuous casting machine support roll rotation detection device according to claim 2, wherein, The controller is also configured to determine that the support roller (15) is dead if the torque value is greater than or equal to a second set value.

4. The continuous casting machine support roll rotation detection device according to claim 3, wherein, The controller is further configured to determine the support roller (15) as a wrinkle roller if the torque value is greater than or equal to a third set value, wherein the third set value is less than the second set value.

5. The continuous casting machine support roll rotation detection device according to claim 1, wherein, The continuous casting machine support roller rotation detection device also includes a protector (400), the protector (400) has an outer shaft (410) and an inner shaft (420) disposed in the outer shaft (410), the inner shaft (420) is connected to the torque sensor (300), and the outer shaft (410) is connected to the bracket (100); When the torque value is greater than or equal to the fourth set value, the inner shaft (420) can rotate relative to the outer shaft (410) so that the contact wheel (200) rotates relative to the support roller (15), wherein the fourth set value is less than the maximum range of the torque sensor (300).

6. The continuous casting machine support roll rotation detection device according to any one of claims 1-5, wherein, The bracket (100) includes a first mounting member (110), a second mounting member (120), and an elastic member (130). The contact wheel (200) is mounted on the first mounting member (110), and the elastic member (130) is disposed between the first mounting member (110) and the second mounting member (120) and can be compressed when the contact wheel (200) contacts the drive roller (14).

7. The continuous casting machine support roll rotation detection device according to claim 6, wherein, The bracket (100) further includes a telescopic member (140), which is telescopically disposed between the first mounting member (110) and the second mounting member (120), and the elastic member (130) is installed on the telescopic member (140).

8. The continuous casting machine support roll rotation detection device according to claim 6, wherein, The first mounting member (110) includes a connected mounting portion (111) and a cantilever portion (112), and the contact wheel (200) is mounted on the mounting portion (111). The second mounting member (120) includes a base plate (122) and two side plates (121) disposed opposite to each other on both sides of the base plate (122). One end of the cantilever portion (112) away from the mounting portion (111) is hinged to the two side plates (121) by a pivot (113). The elastic member (130) is disposed between the cantilever portion (112) and the base plate (122).

9. The continuous casting machine support roll rotation detection device according to claim 8, wherein, The bracket (100) further includes a limiting member (150), which is fixedly disposed between the cantilever portion (112) and the second mounting member (120). The limiting member (150) and the elastic member (130) are respectively disposed on both sides of the rotating shaft (113), and the elastic member (130) is located on the side of the rotating shaft (113) closer to the cantilever portion (112).

10. The continuous casting machine support roll rotation detection device according to claim 8, wherein, The support roller (15) includes a first support roller (15a)(15) and a second support roller (15b)(15) arranged opposite to each other, with a roller gap between the first support roller (15a)(15) and the second support roller (15b)(15). When the contact wheel (200) contacts the first support roller (15a)(15), the distance between the axis of the rotating shaft (113) and the axis of the contact wheel (200) satisfies the following formula: G(mm)≤L(mm)×cosα+R(mm)+H(mm) Wherein: G is the length of the roll gap, L is the distance between the axis of the rotating shaft (113) and the axis of the contact wheel (200), α is the angle between the cantilever (112) and the roll gap direction, R is the radius of the contact wheel (200), and H is the distance between the axis of the rotating shaft (113) and the second support roller (15b)(15).

11. The continuous casting machine support roll rotation detection device according to claim 8, wherein, The axis of the contact wheel (200) is connected to the axis of the support roller (15) to be tested to form a straight line L1, and the axis of the contact wheel (200) is connected to the axis of the rotating shaft (113) to form a straight line L2. L1 and L2 intersect to form an included angle θ. Where 10° < θ < 70°.

12. The continuous casting machine support roll rotation detection device according to claim 5, wherein, When the contact wheel (200) contacts the support roller (15), the contact wheel (200) and the support roller (15) have an overlap in the roll gap direction, the overlap being 5 mm to 40 mm.

13. A method for detecting the rotation of support rolls in a continuous casting machine, wherein, This device is applied to the continuous casting machine support roll rotation detection device, used to detect the rotation state of the support roll (15) of the continuous casting machine. The support roll (15) can be driven to rotate by the billet when the drive roll (14) drives the billet. The continuous casting machine support roll rotation detection device includes a bracket (100), a contact wheel (200) and a torque sensor (300). The contact wheel (200) is rotatably mounted on the bracket (100), and the torque sensor (300) is connected to the contact wheel (200). The detection method includes: Obtain the torque data set of the contact roller; The support roller (15) is determined to be rotating based on the torque data set.

14. The method for detecting the rotation of the support roll of a continuous casting machine according to claim 13, wherein, The step of determining whether the support roller (15) rotates based on the torque data set includes: The torque value of the support roller (15) is acquired once at a preset time interval; wherein, multiple torque values ​​constitute the torque data group; If the difference between two adjacent torque values ​​is greater than the first set value, it is determined that the support roller (15) is rotating.

15. The method for detecting the rotation of the support roll of a continuous casting machine according to claim 14, wherein, The step of determining whether the support roller (15) rotates based on the torque data set further includes: If the torque value is greater than or equal to the second set value, the support roller (15) is determined to be dead.

16. The method for detecting the rotation of the support roll of a continuous casting machine according to claim 15, wherein, The step of determining whether the support roller (15) rotates based on the torque data set further includes: If the torque value is greater than or equal to the third set value, then the support roller (15) is determined to be a wrinkle roller, wherein the third set value is less than the second set value.

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