Rotation detection device and detection method for supporting roller of continuous casting machine

Abstract

The invention relates to the technical field of steelmaking, in particular to a continuous casting machine supporting roller rotation detection device and method. In the embodiment of the invention, the rotation detection device for the supporting roller of the continuous casting machine comprises a bracket, a contact wheel and a torque sensor. The contact wheel is rotatably mounted on the support, and the torque sensor is connected to the contact wheel. Under the condition that the contact wheel moves relative to the supporting roller and makes contact with the supporting roller, the torque sensor is used for detecting a torque data set of the contact wheel so as to judge whether the supporting roller rotates or not according to the torque data set. According to the continuous casting machine back-up roll rotation detection device and detection method, under the condition that the contact wheel moves relative to the back-up roll and makes contact with the back-up roll, the torque sensor is used for detecting the torque data set of the contact wheel, whether the back-up roll rotates or not is judged according to the torque data set, and therefore the rotation state of the back-up roll is obtained; therefore, the fan-shaped sections can be selectively replaced according to the rotating state of the supporting roller, regular replacement is not needed, the production organization time is shortened, the yield is guaranteed, and economic losses are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steelmaking, and in particular to a rotation detection device and a detection method for a support roller of a continuous casting machine. Background Art

[0002] Surface quality is an important indicator of the quality of ingot products. Since the ingot needs to go through the whole process from the crystallizer to the roller exit during casting, ensuring the good rotation of the support roller is an important guarantee for the surface quality of the ingot. If the support roller rotates poorly, the surface of the ingot is prone to batch scratch defects, which cannot meet customer requirements. Moreover, since this defect is very easy to occur in batches, the economic loss is huge.

[0003] In the related art, the support rollers can be ensured to rotate well by regularly replacing the fan segments. However, on the one hand, the production organization time for segment replacement is long, which affects the output. On the other hand, since the rotation status of the support rollers cannot be obtained in time, it often happens that the support rollers of the fan segments replaced according to the casting tonnage still rotate well, causing unnecessary economic losses. Summary of the invention

[0004] The present application provides a continuous casting machine support roller rotation detection device and detection method, which solves the technical problem in the related art that regular replacement of fan segments affects production and causes unnecessary economic losses.

[0005] In a first aspect, the present application provides a continuous casting machine support roller rotation detection device, which is used to detect the rotation state of the support roller of the continuous casting machine, wherein the support roller can be driven to rotate by the casting when the driving roller drives the casting to move, and the detection device comprises:

[0006] 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;

[0007] Wherein, when the contact wheel moves relative to the support roller and contacts the support roller, the torque sensor is used to detect the torque data group of the contact wheel to determine whether the support roller rotates according to the torque data group.

[0008] In some embodiments, the continuous casting machine support roller rotation detection device further includes a controller, and the controller is electrically connected to the torque sensor;

[0009] The torque sensor detects the torque value of the support roller once at a preset time interval.

[0010] The controller is used to receive a plurality of the torque values, and if a difference between two adjacent torque values ​​is greater than a first set value, it is determined that the support roller is rotating.

[0011] In some implementations, the controller is further configured to determine that the support roller is a dead roller if the torque value is greater than or equal to a second set value.

[0012] In some embodiments, the controller is further configured to determine that the support roller is 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.

[0013] In some embodiments, the detection device further comprises a protector, the protector comprising an outer shaft and an inner shaft disposed in the outer shaft, the inner shaft being connected to the torque sensor, and the outer shaft being connected to the bracket;

[0014] When the torque value is greater than or equal to a fourth set value, the inner shaft can rotate relative to the outer shaft to rotate the contact wheel relative to the support roller, wherein the fourth set value is smaller than the maximum range of the torque sensor.

[0015] In some embodiments, the bracket includes a first mounting member, a second mounting member and an elastic member, the contact wheel is mounted on the first mounting member, the elastic member is arranged between the first mounting member and the second mounting member, and can be compressed when the contact wheel is in contact with the driving roller.

[0016] In some embodiments, the bracket further includes a telescopic member, the telescopic member is telescopically disposed between the first mounting member and the second mounting member, and the elastic member is mounted on the telescopic member.

[0017] In some embodiments, the first mounting member includes a connected mounting portion and a cantilever portion, the contact wheel is mounted on the mounting portion, the second mounting member includes a base plate and two side plates oppositely arranged on both sides of the base plate, one end of the cantilever portion away from the mounting portion is hinged to the two side plates through a rotating shaft, and the elastic member is arranged between the cantilever portion and the base plate.

[0018] In some embodiments, the bracket also includes a limit member, which is fixedly disposed between the cantilever portion and the second mounting member, the limit member and the elastic member are disposed on both sides of the rotating shaft, and the elastic member is located on the side of the rotating shaft close to the cantilever portion.

[0019] In some embodiments, the support roller includes a first support roller and a second support roller that are arranged opposite to each other, and a roller gap is formed between the first support roller and the second support roller. When the contact wheel contacts the first support roller, the distance between the axis center of the rotating shaft and the axis center of the contact wheel satisfies the following formula:

[0020] G(mm)≤L(mm)×cosα+R(mm)+H(mm)

[0021] Wherein: G is the length of the roll gap, L is the distance between the axis of the rotating shaft and the axis of the contact wheel, α is the angle between the cantilever portion and the roll gap direction, R is the radius of the contact wheel, and H is the distance between the axis of the rotating shaft and the second support roller.

[0022] In some embodiments, the axis of the contact wheel is connected to the axis of the support roller to be tested to form a straight line L1, the axis of the contact wheel is connected to the axis of the rotating shaft to form a straight line L2, and L1 and L2 intersect to form an angle θ;

[0023] Among them, 10°<θ<70°

[0024] In some embodiments, when the contact wheel contacts the support roller, the contact wheel and the support roller have an overlap in the roller gap direction, and the overlap is 5 mm to 40 mm.

[0025] In a second aspect, an embodiment of the present application provides a continuous casting machine support roller rotation detection method, which is applied to a continuous casting machine support roller rotation detection device, and is used to detect the rotation state of the support roller of the continuous casting machine, wherein the support roller can be driven to rotate by the cast billet when the driving roller drives the cast billet; the continuous casting machine support roller rotation detection device comprises 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;

[0026] The detection method comprises:

[0027] Acquiring a torque data set of the contact roller;

[0028] It is determined whether the support roller is rotating according to the torque data group.

[0029] In some embodiments, the step of determining whether the support roller is rotating according to the torque data group includes:

[0030] The torque value of the support roller is acquired once at a preset time interval; wherein a plurality of the torque values ​​constitute the torque data group;

[0031] If the difference between two adjacent torque values ​​is greater than a first set value, it is determined that the support roller is rotating.

[0032] In some embodiments, the step of determining whether the support roller is rotating according to the torque data group further includes:

[0033] If the torque value is greater than or equal to a second set value, it is determined that the support roller is a dead roller;

[0034] If the torque value is greater than or equal to a third setting value, the support roller is determined to be a wrinkle roller, wherein the third setting value is less than the second setting value.

[0035] The beneficial effects of this application are as follows:

[0036] In a continuous casting machine support roller rotation detection device and detection method provided by the present application, when the contact wheel moves relative to the support roller and contacts the support roller, the torque sensor is used to detect the torque data group of the contact wheel, so as to judge whether the support roller is rotating according to the torque data group and obtain the rotation state of the support roller. Therefore, the fan segment can be selectively replaced according to the rotation state of the support roller without regular replacement, thereby reducing production organization time, ensuring output and reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0038] Figure 1 A schematic diagram of the structure of a sector is shown.

[0039] Figure 2 Shows Figure 1 A partial enlarged view of point A in the middle.

[0040] Figure 3 Shows Figure 1 Schematic diagram of the structure of the detection device Figure 1 .

[0041] Figure 4 A graph showing the change in torque value when the support roller rotates well is shown.

[0042] Figure 5 A graph showing changes in torque values ​​when the support roller rotates poorly is shown.

[0043] Figure 6 Shows Figure 3 Schematic diagram of the local structure.

[0044] Figure 7 A schematic diagram showing the coordination between the detection device and the fan-shaped segment is shown.

[0045] Figure 8 Shows Figure 1 Schematic diagram of the structure of the detection device Figure 2 .

[0046] Fig. 9 Shows Figure 1 Schematic diagram of the structure of the detection device Figure 3 .

[0047] Fig.10 Shows Fig. 9 sectional view of .

[0048] Fig.11 The force analysis diagram when the contact wheel contacts the support roller is shown.

[0049] Fig.12 Shows Fig. 9 Exploded view of the structure of the first mounting part.

[0050] Fig.13 A schematic diagram showing the relationship between the roll gap length and the detection device is shown.

[0051] Fig.14 A schematic diagram showing the relationship between the angle θ formed by the straight line L1 and the straight line L2 is shown.

[0052] Fig.15 A flowchart of step S100 to step S200 is shown.

[0053] Fig.16 A flowchart of steps S210 to S230 is shown.

[0054] Fig.17 A flowchart of steps S210 to S270 is shown.

[0055] Description of reference numerals:

[0056] 10-sector segment, 11-vertical segment, 12-arc segment, 13-horizontal segment, 14-driving roller, 15-support roller, 15a-first support roller, 15b-second support roller, 16-inner arc, 17-outer arc, 20-ingot rod, 30-detection device, 100-bracket, 110-first mounting member, 111-mounting portion, 111a-mounting cavity, 112b-cover plate, 112-cantilever portion, 113-rotating shaft, 114-guide hole, 120-second mounting member , 121-side plate, 122-bottom plate, 130-elastic member, 140-telescopic member, 141-sleeve, 142-first telescopic rod, 143-second telescopic rod, 150-limiting member, 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 DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0061] The continuous casting machine is a metallurgical equipment that solidifies and presses molten steel into ingots. During casting, the ingots need to go through the whole process from the crystallizer to the roller exit, and pass through the fan-shaped segment in the middle. The fan-shaped segment is composed of multiple driving rollers and multiple pairs of support rollers. Some fan-shaped segments have multiple pairs of driving rollers, each pair of driving rollers includes two driving rollers arranged oppositely, and each pair of support rollers includes two support rollers arranged oppositely. There is a roller gap between the two driving rollers and the two support rollers. The inner driving roller and the support roller form the inner arc of the fan-shaped segment, and the outer driving roller and the support roller form the outer arc of the fan-shaped segment. The driving roller is driven to rotate by a motor. During the casting process, the driving rollers of the inner and outer arcs guide the movement of the ingot by rolling and dragging the ingot rod. The support roller presses down the ingot, and the ingot drives the support roller to rotate during the movement. The driving roller and the support roller jointly ensure the surface quality and dimensional accuracy of the ingot.

[0062] Surface quality is an important indicator of the quality of ingot products. The drive roller is driven by the motor, while the support roller is passively driven by the ingot. Therefore, ensuring that the support roller rotates well is an important guarantee for the surface quality of the ingot. If the support roller rotates poorly, a large number of scratches will easily appear on the surface of the ingot. This defect will be transmitted to the downstream hot rolling and cold rolling processes, resulting in obvious strip defects on the surface of the finished coil, which cannot meet customer requirements. In addition, since this defect is very easy to occur in batches, the economic loss is huge.

[0063] In the related art, the support rollers can be ensured to rotate well by regularly replacing the fan segments. However, on the one hand, the production organization time for segment replacement is long, which affects the output. On the other hand, since the rotation status of the support rollers cannot be obtained in time, it often happens that the support rollers of the fan segments replaced according to the casting tonnage still rotate well, causing unnecessary economic losses.

[0064] In order to improve the above-mentioned technical problems to a certain extent, the embodiments of the present application provide a continuous casting machine support roller rotation detection device and detection method, which can detect the rotation state of the support roller of the continuous casting machine, so that the fan segments can be selectively replaced according to the rotation state of the support roller without the need for regular replacement, thereby reducing production organization time, ensuring output and reducing economic losses.

[0065] The following is a description of the embodiments of the present application in conjunction with the accompanying drawings:

[0066] See also Figure 1 and Figure 2 The embodiment of the present application provides a continuous casting machine support roller rotation detection device 30, which is 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 when the driving roller 14 drives the casting to move. The continuous casting machine support roller rotation detection device 30 provided in the embodiment of the present application can detect the rotation state of the support roller 15 of the continuous casting machine, so that the fan-shaped segment 10 can be selectively replaced according to the rotation state of the support roller 15 without regular replacement, thereby reducing production organization time, ensuring output and reducing economic losses.

[0067] It should be noted that the inner arc 16 and the outer arc 17 of the sector segment 10 have a plurality of support rollers 15 . The embodiment of the present application describes the detection process of the detection device 30 and any one of the support rollers 15 , and the same applies to the other support rollers 15 .

[0068] See also Figure 1-Figure 3 In the embodiment of the present 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.

[0069] When the contact wheel 200 moves relative to the support roller 15 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 rotates according to the torque data set.

[0070] The bracket 100 is the main body of the entire detection device 30, provides an installation base for other components of the detection device 30, and protects other components of the detection device 30. In addition, all other components are integrated in the bracket 100, so that the detection device 30 can be formed into a whole, which can facilitate the installation and transportation of the detection device 30.

[0071] The contact wheel 200 includes a wheel body 210 and a contact ring 220 wound 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 collision 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 increase the service life.

[0072] The torque sensor 300 is used to detect torque. Since the torque sensor 300 is connected to the contact wheel 200, the torque sensor 300 can detect the torque value of the contact wheel 200. In order to make the torque detection more stable, a conductive slip ring 500 can be arranged 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 technical means in the art and will not be described in detail here.

[0073] It is obvious that the cross-sections of the contact wheel 200 and the support roller 15 are both circular, and the movement of the contact wheel 200 relative to the support roller 15 is that a certain point on the outer surface of the contact wheel 200 moves along a partial arc surface of the support roller 15, and during the whole process, the contact wheel 200 is in contact with the support roller 15. Therefore, the contact wheel 200 will provide torque to the support roller 15 during the movement. Due to the mutual action of forces, the support roller 15 will also provide torque to the contact wheel 200, that is, the torque value of the contact wheel 200 is also the torque value of the support roller 15.

[0074] It can be understood that the position of the support roller 15 in the sector segment 10 is fixed. When the cast billet moves in the sector segment 10, it will contact the support roller 15 and move relative to the support roller 15. Therefore, the contact wheel 200 in the embodiment of the present application moves relative to the support roller 15 and contacts the support roller 15, which can be regarded as a process of simulating the movement of the cast billet relative to the support roller 15 and contacting the support roller 15.

[0075] The contact wheel 200 needs to complete the process of contacting the support roller 15, moving along the partial arc surface of the support roller 15, and then leaving the support roller 15 within a certain period of time. The torque data group is a plurality of torque values ​​collected by the torque sensor 300 within this period of time. The torque data group is different when the support roller 15 is in different rotation states. Therefore, it is possible to judge whether the support roller 15 is rotating based on the torque data group of the support roller 15, and obtain the rotation state of the support roller 15. The operator can judge whether the fan segment 10 needs to be replaced based on the rotation state of the support roller 15, without having to replace the fan segment 10 regularly, thereby reducing the production organization time, ensuring the output and reducing economic losses.

[0076] See also Figure 1 and Figure 2 , the continuous casting machine is equipped with a dummy bar 20, which is used to guide the continuous pulling of the billet from the crystallizer, and to separate the billet from the billet after the billet pulling is completed, as well as to accommodate and reload the dummy bar 20. During the operation of the sector 10, the dummy bar 20 is between the inner arc 16 and the outer arc 17, and the driving rollers 14 of the inner arc 16 and the outer arc 17 guide the billet to move 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 installed on the dummy bar 20, so that the driving roller 14 drives the dummy bar 20 to move, so that the contact wheel 200 can move relative to the support roller 15, and during the movement of the dummy bar 20 in the sector 10, the contact wheel 200 can contact each support roller 15 in turn, so as to obtain a torque value group of each support roller 15. Of course, under the guidance of the dummy bar 20, the running direction of the detection device 30 is consistent with the casting direction of the continuous casting machine.

[0077] In addition, the dummy rod 20 operates when the continuous casting machine is in operation, and the detection device 30 is installed on the dummy rod 20. Therefore, when it is necessary to detect the rotation state of the support roller 15, there is no need to stop the machine, and the rotation state of the support roller 15 can be detected online, thereby further reducing the production organization time and ensuring output.

[0078] Since the rod body of the dummy bar 20 includes two chains arranged opposite to each other, and the two chains are connected by several support rods arranged at intervals, the rod body of the dummy bar 20 has many hollow parts, which makes it inconvenient to directly install the detection device 30. In order to ensure the accuracy and equipment status of the continuous casting machine, 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 10. Therefore, in order to facilitate the installation of the detection device 30, the detection device 30 can also be directly installed on the online roll gap meter, so there is no need to design an installation structure of the detection device 30 on the dummy bar 20, which is more time-saving and labor-saving.

[0079] Of course, see Figure 2 Since both the inner arc 16 and the outer arc 17 of the sector 10 have a plurality of support rollers 15, two detection devices 30 can be provided on the dummy bar 20, one of which is provided close to the inner arc 16, and its contact wheel 200 contacts the support rollers 15 of the inner arc 16, and the other is provided close to the outer arc 17, and its contact wheel 200 contacts the support rollers 15 of the outer arc 17, so that the rotation states of the support rollers 15 of the inner arc 16 and the outer arc 17 can be detected simultaneously.

[0080] See also Figure 1-Figure 3 In some embodiments, 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 at a preset time interval, and 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.

[0081] When the contact wheel 200 moves relative to the support roller 15 and contacts the support roller 15, the torque sensor 300 detects the torque value of the support roller 15 once at a preset time interval, thereby obtaining a torque data set. The torque data set may include two, three or more torque values, which are not limited.

[0082] When the support roller 15 is able to 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 torque value that can drive the support roller 15 to rotate at a certain moment. 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 is completed and the torque value drops to 0. During this process, the contact wheel 200 and the bracket 100 remain relatively still.

[0083] That is, when the support roller 15 starts to rotate, the torque value of the contact wheel 200 will suddenly change, so that around the moment when the support roller 15 starts to rotate, the difference between two adjacent torque values ​​will become very large. Therefore, when the controller calculates that the difference between two adjacent torque values ​​is greater than the first set value, it means that the torque value has suddenly changed at this time, and it can be determined that the support roller 15 has rotated.

[0084] Specifically, 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-0.5Nm. Of course, for different continuous casting machines and different support rollers, the first set value will be different and can be set according to actual conditions.

[0085] In some implementations, the controller is further configured to determine that the support roller 15 is a dead roller if the torque value is greater than or equal to a second set value.

[0086] When the support roller 15 is a dead roller, the support roller 15 cannot rotate or can only rotate slightly, so it can be considered that the torque value driving the dead roller to rotate is infinite. In order to detect the dead roller, a second setting value can be set. When the contact wheel 200 is in contact with the support roller 15 and moves relative to it, if the torque value of the contact wheel 200 is greater than or equal to the second setting value, it can be determined that the support roller 15 is a dead roller and needs to be replaced immediately.

[0087] Among them, the support rollers 15 that can rotate include well-lubricated support rollers 15 and poorly rotated support rollers 15, i.e., corrugated rollers. The torque required to drive the well-lubricated support rollers 15 to rotate is smaller, while the torque required to drive the corrugated 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 corrugated rollers to rotate as the critical value for judging the corrugated rollers and the dead rollers. The critical value is the second set value.

[0088] Specifically, the second set value may be 2.7 Nm to 3 Nm.

[0089] In some embodiments, the controller is further configured to determine that the support roller 15 is a wrinkled 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.

[0090] When the support roller 15 is a corrugated roller, although it can be driven to rotate, the corrugated roller is easy to develop into a dead roller, and the driving torque required for the corrugated roller is large. In the process of being driven to rotate by the billet, it is still easy to scratch the billet due to poor rotation. Therefore, when a corrugated roller appears, the sector 10 should be replaced in time. In order to detect the corrugated roller, a third setting value can be set. When the contact wheel 200 is in contact with the support roller 15 and moves relative to it, if the torque value of the contact wheel 200 is greater than or equal to the third setting value, it can be determined that the support roller 15 is a corrugated roller. Of course, the third setting value is smaller than the second setting value.

[0091] It should be explained that the judgment of a well-lubricated support roller 15 and a corrugated roller is rather vague and there is no quantitative standard. Therefore, before testing, it is necessary to select a support roller 15 as a reference support roller, and use the torque value for driving the reference support roller to rotate as the third set value. If the driving torque value is less than the third set value, it is judged that the rotation state of the support roller 15 is good. If the driving torque value is greater than or equal to the third set value, it is judged that the support roller 15 is a corrugated roller. The selection of the reference support roller needs to be determined by on-site operators based on experience.

[0092] Specifically, the third set value may be 2.4 Nm to 2.7 Nm.

[0093] In some embodiments, the detection device 30 also includes a protector 400, the protector 400 has an outer shaft 410 and an inner shaft 420 arranged 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 a fourth set value, the inner shaft 420 can rotate relative to the outer shaft 410 to make the contact wheel 200 rotate relative to the support roller 15, wherein the fourth set value is less than the maximum range of the torque sensor 300.

[0094] Since the torque sensor 300 has a limited range and the driving torque value of the dead roller is considered infinite, once the torque value exceeds the maximum range of the torque sensor 300, the torque sensor 300 will be damaged. Therefore, the protector 400 can be provided to protect the torque sensor 300.

[0095] Since the inner shaft 420 is connected to the torque sensor 300, and the torque sensor 300 is connected to the contact wheel 200, that is, the inner shaft 420, the torque sensor 300 and the contact wheel 200 can be regarded 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, so that the contact wheel 200 rotates relative to the support roller 15, so that the torque value of the contact wheel 200 will gradually decrease until the measurement is completed. 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, so that the torque value gradually decreases, thereby protecting the torque sensor 300.

[0096] The fourth setting value may be the same as the second setting value. Thus, when the torque value detected by the torque sensor 300 reaches the second setting value and the controller determines that the support roller 15 is a dead roller, the inner shaft 420 rotates relative to the outer shaft 410, causing the torque value to gradually decrease.

[0097] Since the support roller 15 needs to be replaced when it is a wrinkled roller, the fourth setting value can also 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, so that the torque value gradually decreases. In this case, since the torque sensor 300 cannot measure the second setting value, there is no need to determine whether it is a dead roller. Whether it is a dead roller or a wrinkled roller, when the contact wheel 200 contacts and moves relative to it, the torque value will reach the third setting value. At this time, the controller can determine that the rotation state of the support roller 15 is poor and needs to be replaced in time.

[0098] Specifically, the maximum range of the torque sensor 300 may be 18Nm to 22Nm, and the fourth setting value may be 10Nm to 14Nm. The protector 400 may be a damping shaft 113, and the structure and working principle of the damping shaft 113 are common knowledge in the technical field and will not be described in detail here.

[0099] Next, the rotation state of the support roller 15 is described in conjunction with the torque value change curve diagram, wherein 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 setting value is the same as the third setting value as an example for description:

[0100] See also Figure 4 When the support roller 15 is in good rotation state, as the contact wheel 200 contacts the support roller 15, the torque value first gradually increases until it reaches the torque value M0 of driving 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 is completed. During this process, the contact wheel 200 and the bracket 100 remain relatively still.

[0101] See also Figure 5 When the support roller 15 is in a bad 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 measuring 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 is completed at time t2. The contact wheel 200 and the torque sensor 300, the inner shaft 420 driven by it and the bracket 100 are relatively stationary. At this time, the torque value gradually decreases to the initial state.

[0102] Next, the specific structure of the bracket 100 is described:

[0103] See also Figure 3 and Figure 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, 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 driving roller 14.

[0104] The contact wheel 200, the torque sensor 300 and the protector 400 are all mounted on the first mounting member 110, and the second mounting member 120 is used to connect with the dummy bar 20 or the housing of the online roll gap instrument. Specifically, the second mounting member 120 can be connected with the housing of the online roll gap instrument by screwing, riveting, etc., which is not limited.

[0105] See also Figure 6 and Figure 7During the operation of the sector 10, the driving roller 14 will rotate and press down, and will recover after pressing down. When the dummy rod 20 passes through the driving roller 14, the roller gap will become smaller. Therefore, an elastic member 130 is arranged between the first mounting member 110 and the second mounting member 120. The expansion and contraction direction of the elastic member 130 is consistent with the roller gap direction. Of course, the roller gap direction is perpendicular to the casting direction of the continuous casting machine. In this way, when the contact wheel 200 contacts the driving roller 14, the first mounting member 110 and the second mounting member 120 move relative to each other, and the elastic member 130 will be compressed, and the compression amount reaches the maximum. When the contact wheel 200 leaves the driving roller 14, the elastic member 130 is released, so that the contact wheel 200 can contact the next supporting roller 15.

[0106] See also Figure 7 When the contact wheel 200 just contacts the support roller 15 , in the roller gap direction, the contact wheel 200 and the support roller 15 have an overlap amount Δh, and Δh needs to be greater than 0 so that the contact wheel 200 can contact the next support roller 15 after the elastic member 130 is compressed and then released.

[0107] See also 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 the elastic member 130 is mounted on the telescopic member 140 .

[0108] The elastic member 130 is mounted on the telescopic member 140, so that the telescopic member 140 can provide a guide for the telescopic movement of the elastic member 130. Specifically, the elastic member 130 can be a spring, and the telescopic member 140 can include a sleeve 141 and a first telescopic rod 142, the first telescopic rod 142 is telescopically arranged in the sleeve 141, the sleeve 141 is connected to the first mounting member 110, and the first telescopic rod 142 is connected to the second mounting member 120. When the elastic member 130 is compressed and released, the first telescopic rod 142 is also telescopic in the sleeve 141.

[0109] Two elastic members 130 may be provided, and the two elastic members 130 are respectively located on both sides of the first mounting member 110. Of course, two telescopic members 140 are also provided, and are arranged one-to-one with the two elastic members 130. In order to improve the guiding effect of the elastic member 130, the bracket 100 also includes two second telescopic rods 143, and the two second telescopic rods 143 are located between the two elastic members 130. The first mounting member 110 is provided with 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 is passed through the guide hole 114. That is, during the compression and release process of the elastic member 130, the second telescopic rod 143 moves in the guide hole 114. In order to further provide guidance for the expansion and contraction of the elastic member 130, it is possible to avoid the contact wheel 200 from tilting during the compression and release process of the elastic member 130, thereby affecting the contact effect with the support roller 15.

[0110] Of course, see Figure 8 In other embodiments, four elastic members 130 may be provided. Of course, four telescopic members 140 are also provided and are arranged one-to-one corresponding to the four elastic members 130. In this way, a better guiding effect may be achieved.

[0111] Furthermore, in order to make the contact ring 220 easy to maintain and replace, and easy to disassemble and maintain, a plurality of grooves 211 may be provided on the outer ring of the wheel body 210, and a plurality of protrusions 221 that match the grooves 211 one by one are provided on the inner ring of the contact ring 220. The protrusions 221 are snapped into the grooves 211, so that the contact ring 220 and the wheel body 210 can be closely matched, and the contact ring 220 can be effectively prevented from sliding relative to the wheel body 210.

[0112] See also Fig. 9 and Fig.10 In some embodiments, the first mounting member 110 includes a connected mounting portion 111 and a cantilever portion 112, 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 arranged 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 through a rotating shaft 113, and the elastic member 130 is arranged between the cantilever portion 112 and the base plate 122.

[0113] See also Fig.11 As mentioned above, when the contact wheel 200 just contacts the support roller 15, in the roller gap direction, the overlap amount Δh between the contact wheel 200 and the support roller 15 needs to be greater than 0. Therefore, the support roller 15 will give the contact wheel 200 a tipping force F1 and a compression force F2. However, if the Δh is large, the tipping force of the support roller 15 on the contact wheel 200 will be large, so that the combined force of the tipping force F1 and the compression force F2 will be large, making 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 move further. Since one end of the cantilever portion 112 away from the mounting portion 111 is hinged to the two side plates 121 via the rotating shaft 113, that is, the cantilever portion 112 can drive the mounting portion 111 to rotate freely around the rotating shaft 113, during the movement of the contact wheel 200 relative to the support roller 15, the mounting portion 111 will rotate slightly to adapt to the curved 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 being stuck as much as possible, and in this process, the elastic member 130 will be compressed by the pressure, and when the contact wheel 200 leaves the previous support roller 15, the elastic member 130 is released, and the mounting portion 111 returns to its initial position to detect the next support roller 15.

[0114] Specifically, see Fig.10 and Fig.12The bottom plate 122 is connected to the ingot rod 20 or the box of the online roll gap instrument. The mounting portion 111 has a mounting cavity 111a. The torque sensor 300 and the protector 400 are both arranged in the mounting cavity 111a. The contact wheel 200 is located outside the mounting cavity 111a, and a cover plate 112b is provided at the opening of the mounting cavity 111a to close the mounting cavity 111a, thereby reducing interference from substances such as water vapor and dust.

[0115] In some embodiments, the bracket 100 also includes a limit member 150, which is fixedly disposed between the cantilever portion 112 and the second mounting member 120. The limit 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 close to the cantilever portion 112.

[0116] The limit member 150 and the elastic member 130 are placed on both sides of the rotating shaft, and together form a swinging motion structure of the cantilever part 112. When the elastic member 130 is released, the rotation arc of the cantilever part 112 can be limited under the limitation of the limit member 150, thereby avoiding to a certain extent that the rotation arc of the cantilever part 112 is too large, resulting in too much overlap between the contact wheel 200 and the next support roller 15, and increasing the risk of the contact wheel 200 being stuck.

[0117] See also Fig.13 In some embodiments, the support roller 15 includes a first support roller 15a and a second support roller 15b that are arranged opposite to each other, and a roller gap is formed 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:

[0118] G(mm)≤L(mm)×cosα+R(mm)+H(mm)

[0119] 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 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.

[0120] The first support roller 15a and the second support roller 15b are one pair of support rollers 15 in the sector segment 10, and the same is true for other pairs of support rollers 15 in the sector segment 10. In addition, the embodiment of the present application takes the case where the contact wheel 200 contacts the first support roller 15a as an example for explanation. When the contact wheel 200 contacts the second support roller 15b, H in the above formula is 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.

[0121] The continuous casting machine has different roll gap values ​​under different production modes. The limiter 150 can be set to an adjustable height. In this way, before starting the detection, the height of the limiter 150 can be adjusted to change the value of α to match different roll gaps.

[0122] Specifically, see Fig.10 The limit member 150 includes an adjusting bolt 151 and two adjusting nuts 152. The two adjusting nuts 152 are respectively fixed to the cantilever portion 112 and the bottom plate 122. Both 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 threadedly transmitted to adjust the overall height of the limit member 150.

[0123] See also Fig.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 angle θ; wherein the angle θ can be 10°<θ<70°.

[0124] When L1 and L2 are collinear, that is, θ=0°, the contact wheel 200 will be subjected to the maximum resultant force F when operating in this state, causing the detection device 30 to be easily damaged; when θ<0°, the overturning force F1 is too large, causing the contact wheel 200 to drive the bracket 100 to move in the opposite direction of the running direction of the detection device 30, and the cantilever part 112 and the limit block are in a rigid collision state, causing the detection device 30 to flip and be damaged. Therefore, in order to ensure the normal operation of the detection device 30, θ>0° must be satisfied, which can be achieved by fine-tuning the height of the limit block.

[0125] Specifically, θ can be 15°, 25°, 35°, 45°, or 55°, without limitation.

[0126] See also Fig.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 roller gap direction, and the overlap amount Δh is 5 mm to 40 mm.

[0127] In the case where the contact wheel 200 contacts the support roller 15, that is, when the contact wheel 200 just contacts the support roller 15. 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, the dummy rod 20 will be close to the outer arc 17 under the action of the gravity of the dummy rod 20. 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 amount Δh between the contact wheel 200 and the support roller 15 is 5mm to 40mm.

[0128] Specifically, the overlap amount Δh may be 10 mm, 15 mm, 20 mm, 25 mm, or 35 mm, without limitation.

[0129] Based on the same inventive concept, the embodiment of the present application also provides a continuous casting machine support roller rotation detection method, which is applied to a continuous casting machine support roller rotation detection device 30, and is 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 when the driving roller 14 drives the casting. 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; please refer to Fig.15 , the continuous casting machine support roller rotation detection method includes:

[0130] Step S100: Acquire a torque data set of the contact roller.

[0131] The torque data set of the contact roller can be obtained by the torque sensor 300. The contact wheel 200 completes the process of contacting the support roller 15, moving along the partial arc surface of the support roller 15, and then leaving the support roller 15 within a certain time period. The torque data set is a plurality of torque values ​​collected by the torque sensor 300 within the time period.

[0132] Step S200: judging whether the support roller 15 is rotating according to the torque data group.

[0133] The torque data group of the support roller 15 is different in different rotation states, so it can be judged whether the support roller 15 is rotating according to the torque data group of the support roller 15, thereby obtaining the rotation state of the support roller 15. The operator can judge whether the sector segment 10 needs to be replaced according to the rotation state of the support roller 15, without the need for regular replacement, thereby reducing production organization time, ensuring output and reducing economic losses.

[0134] See also Fig.16 In some embodiments, the step of determining whether the support roller 15 is rotating according to the torque data group includes:

[0135] Step S210: acquiring the torque value of the support roller 15 once at a preset time interval; wherein a plurality of torque values ​​constitute a torque data group.

[0136] In the process that the contact wheel 200 moves relative to the support roller 15 and contacts the support roller 15, the torque sensor 300 detects the torque value of the support roller 15 once at a preset time interval, thereby obtaining a torque data set. The torque data set may include two, three or more torque values, which are not limited. Specifically, the preset time may be 100ms-500ms.

[0137] Step S220: Determine whether the difference between two adjacent torque values ​​is greater than a first set value.

[0138] When the support roller 15 is able to 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 torque value that can drive the support roller 15 to rotate at a certain moment. 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 is completed and the torque value drops to 0. During this process, the contact wheel 200 and the bracket 100 remain relatively still.

[0139] That is, when the support roller 15 starts to rotate, the torque value of the contact wheel 200 will suddenly change, so that 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 is rotating.

[0140] Specifically, the first set value may be 0.1 Nm to 0.5 Nm.

[0141] 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 is rotating.

[0142] When the controller calculates that the difference between two adjacent torque values ​​is greater than the first set value, it means that the torque value has suddenly changed, so it can be determined that the support roller 15 has rotated.

[0143] See also Fig.17 In some embodiments, the step of determining whether the support roller 15 is rotating according to the torque data group further includes:

[0144] Step S240: Determine whether the torque value is greater than or equal to a second set value.

[0145] When the support roller 15 is a dead roller, the support roller 15 cannot rotate or can only rotate slightly, so it can be considered that the torque value driving the dead roller to rotate is infinite. In order to detect the dead roller, a second set value can be set, and 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.

[0146] Specifically, the second set value may be 2.7 Nm to 3 Nm.

[0147] Step S250: If the torque value is greater than or equal to the second set value, it is determined that the support roller 15 is a dead roller.

[0148] During the process of the contact wheel 200 contacting and relatively moving with the support roller 15, if the torque value of the contact wheel 200 is greater than or equal to the second set value, it can be determined that the support roller 15 is a dead roller and needs to be replaced immediately.

[0149] Among them, the support rollers 15 that can rotate include well-lubricated support rollers 15 and support rollers 15 in poor rotation state, namely, corrugated rollers. The torque required to drive the well-lubricated support rollers 15 to rotate is smaller, while the torque required to drive the corrugated 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 corrugated rollers to rotate as the critical value for judging the corrugated rollers and the dead rollers. The critical value is the second set value.

[0150] In some embodiments, the step of determining whether the support roller 15 is rotating according to the torque data group further includes:

[0151] Step S260: Determine whether the torque value is greater than or equal to a third set value.

[0152] When the support roller 15 is a corrugated roller, although it can be driven to rotate, the corrugated roller is easy to develop into a dead roller, and the driving torque required for the corrugated roller is large. In the process of being driven to rotate by the billet, it is still easy to scratch the billet due to poor rotation. Therefore, when a corrugated roller appears, the sector 10 should be replaced in time. In order to detect the corrugated roller, a third setting value can be set, and by judging whether the torque value is greater than or equal to the third setting value, it can be inferred whether the support roller is a dead roller.

[0153] Specifically, the third set value may be 2.4 Nm to 2.7 Nm.

[0154] Step S270: If the torque value is greater than or equal to the third set value, it is determined that the support roller 15 is a wrinkle roller, wherein the third set value is less than the second set value.

[0155] During the process of the contact wheel 200 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 wrinkle roller. Of course, the third set value is less than the second set value.

[0156] It needs to be explained that the judgment of a well-lubricated support roller 15 and a corrugated roller is rather vague and there is no quantitative standard. Therefore, before conducting the test, it is necessary to select a support roller 15 as a reference support roller, and use the torque value for driving the reference support roller to rotate as the third set value. If the driving torque value is less than the third set value, it is judged that the rotation state of the support roller 15 is good. If the driving torque value is greater than or equal to the third set value, it is judged that the support roller 15 is a corrugated roller. The selection of the reference support rod needs to be determined by the on-site operator based on experience.

[0157] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0158] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A continuous casting machine support roller rotation detection device, used for detecting the rotation state of the support roller of the continuous casting machine, wherein the support roller can be driven to rotate by the casting billet when the driving roller drives the casting billet to move, characterized in that: The detection device comprises: 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; Wherein, when the contact wheel moves relative to the support roller and contacts the support roller, the torque sensor is used to detect the torque data group of the contact wheel to determine whether the support roller rotates according to the torque data group.

2. The continuous casting machine support roller rotation detection device according to claim 1, characterized in that: The detection device further includes a controller, wherein the controller is electrically connected to the torque sensor; The torque sensor detects the torque value of the support roller once at a preset time interval; The controller is used to receive a plurality of the torque values, and if a difference between two adjacent torque values ​​is greater than a first set value, it is determined that the support roller is rotating.

3. The continuous casting machine support roller rotation detection device according to claim 2, characterized in that: The controller is further configured to determine that the support roller is a dead roller if the torque value is greater than or equal to a second set value.

4. The continuous casting machine support roller rotation detection device according to claim 3, characterized in that: The controller is further configured to determine that the support roller is 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 roller rotation detection device according to claim 1, characterized in that: The continuous casting machine support roller rotation detection device further includes a protector, wherein the protector has an outer shaft and an inner shaft arranged in the outer shaft, the inner shaft is connected to the torque sensor, and the outer shaft is connected to the bracket; When the torque value is greater than or equal to a fourth set value, the inner shaft can rotate relative to the outer shaft to rotate the contact wheel relative to the support roller, wherein the fourth set value is smaller than the maximum range of the torque sensor.

6. The continuous casting machine support roller rotation detection device according to any one of claims 1 to 5, characterized in that: The bracket includes a first mounting member, a second mounting member and an elastic member, the contact wheel is mounted on the first mounting member, the elastic member is arranged between the first mounting member and the second mounting member, and can be compressed when the contact wheel contacts the driving roller.

7. The continuous casting machine support roller rotation detection device according to claim 6, characterized in that: The bracket further comprises a telescopic member, which is telescopically arranged between the first mounting member and the second mounting member, and the elastic member is installed on the telescopic member.

8. The continuous casting machine support roller rotation detection device according to claim 6, characterized in that: The first mounting member includes a connected mounting portion and a cantilever portion, the contact wheel is mounted on the mounting portion, the second mounting member includes a base plate and two side plates oppositely arranged on both sides of the base plate, one end of the cantilever portion away from the mounting portion is hinged to the two side plates through a rotating shaft, and the elastic member is arranged between the cantilever portion and the base plate.

9. The continuous casting machine support roller rotation detection device according to claim 8, characterized in that: The bracket also includes a limiting member, which is fixedly arranged between the cantilever portion and the second mounting member. The limiting member and the elastic member are respectively arranged on both sides of the rotating shaft, and the elastic member is located on a side of the rotating shaft close to the cantilever portion.

10. The continuous casting machine support roller rotation detection device according to claim 8, characterized in that: The support roller comprises a first support roller and a second support roller which are arranged opposite to each other, and a roller gap is formed between the first support roller and the second support roller. When the contact wheel contacts the first support roller, the distance between the axis of the rotating shaft and the axis of the contact wheel 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 and the axis of the contact wheel, α is the angle between the cantilever portion and the roll gap direction, R is the radius of the contact wheel, and H is the distance between the axis of the rotating shaft and the second support roller.

11. The continuous casting machine support roller rotation detection device according to claim 8, characterized in that: The axis of the contact wheel is connected to the axis of the support roller to be tested to form a straight line L1, and the axis of the contact wheel is connected to the axis of the rotating shaft to form a straight line L2, and L1 and L2 intersect to form an angle θ; Among them, 10°<θ<70°.

12. The continuous casting machine support roller rotation detection device according to claim 5, characterized in that: When the contact wheel contacts the support roller, the contact wheel and the support roller have an overlap amount in the roller gap direction, and the overlap amount is 5 mm to 40 mm.

13. A method for detecting rotation of a support roller of a continuous casting machine, characterized in that: The invention is applied to a rotation detection device for a support roller of a continuous casting machine, and is used to detect the rotation state of the support roller of the continuous casting machine, wherein the support roller can be driven to rotate by the cast billet when the driving roller drives the cast billet; the rotation detection device for the support roller of the continuous casting machine comprises 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; The detection method comprises: Acquiring a torque data set of the contact roller; It is determined whether the support roller is rotating according to the torque data group.

14. The method for detecting rotation of a continuous casting machine support roller according to claim 13, characterized in that: The step of judging whether the support roller is rotating according to the torque data group comprises: The torque value of the support roller is acquired once at a preset time interval; wherein a plurality of the torque values ​​constitute the torque data group; If the difference between two adjacent torque values ​​is greater than a first set value, it is determined that the support roller is rotating.

15. The method for detecting rotation of a support roller of a continuous casting machine according to claim 14, characterized in that: The step of judging whether the support roller is rotating according to the torque data group further comprises: If the torque value is greater than or equal to a second set value, it is determined that the support roller is a dead roller.

16. The method for detecting rotation of a support roller of a continuous casting machine according to claim 15, characterized in that: The step of judging whether the support roller is rotating according to the torque data group further comprises: If the torque value is greater than or equal to a third setting value, the support roller is determined to be a wrinkle roller, wherein the third setting value is less than the second setting value.

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