A roll gap measuring device and roll gap measuring method

Abstract

The present application relates to the technical field of steelmaking, and particularly relates to a roll gap measuring device and a roll gap measuring method. The roll gap measuring device provided by the present application comprises a main body, a first measurer and a first moving mechanism connected with the main body, a second measurer and a second moving mechanism connected with the main body, and a controller. The main body has a mounting cavity, a first moving opening and a second moving opening communicated with the mounting cavity, and the first moving opening and the second moving opening are arranged oppositely along the symmetry axis of the first casting roll and the second casting roll. In the case that the first moving mechanism moves relative to the first casting roll and is in contact with the first casting roll, the first measurer can detect the first movement amount of the first moving mechanism. In the case that the second moving mechanism moves relative to the second casting roll and is in contact with the second casting roll, the second measurer can detect the second movement amount of the second moving mechanism. The controller can calculate the roll gap between the first casting roll and the second casting roll according to the first movement amount and the second movement amount.

Description

Technical Field

[0001] This invention relates to the field of steelmaking technology, and in particular to a roll gap measuring device and a roll gap measuring method. Background Technology

[0002] The roll gap of a continuous casting machine is a key process parameter for ensuring the dimensional accuracy of the cast billet thickness and product quality. Poor roll gap accuracy control can lead to problems such as dimensional inaccuracies in wedge-shaped billets, and center segregation in the cast billet. This results in different microstructures along the width and thickness directions, causing significant performance differences between different coils within the same heat or even within the same coil during downstream hot rolling. This can easily lead to problems such as stamping cracks and bending cracks, resulting in products that fail to meet customer requirements. In severe cases, it can even cause bulging problems, potentially leading to serious accidents such as steel leakage. However, the measurement accuracy of the roll gap in related technologies is relatively low. Summary of the Invention

[0003] This application provides a roll gap measuring device and a roll gap measuring method, which to some extent improves the technical problem of low roll gap measuring accuracy in related technologies.

[0004] In a first aspect, embodiments of this application provide a roll gap measuring device for measuring the roll gap between a pair of first and second casting rolls arranged in a continuous casting machine, comprising:

[0005] The main body has a mounting cavity, a first movable port and a second movable port communicating with the mounting cavity, and the first movable port and the second movable port are arranged opposite to each other along the axis of symmetry of the first casting roll and the second casting roll;

[0006] A first measuring device and a first movable mechanism are connected. The first measuring device is disposed in the mounting cavity, and a portion of the first movable mechanism passes through the first movable opening to contact the first casting roll. When the first movable mechanism moves relative to and contacts the first casting roll, the first measuring device can detect a first amount of movement of the first movable mechanism.

[0007] A second measuring device and a second movable mechanism are connected. The second measuring device is disposed in the mounting cavity, and a portion of the second movable mechanism passes through the second movable opening to contact the second casting roll. When the second movable mechanism moves relative to and contacts the second casting roll, the second measuring device can detect a second amount of movement of the second movable mechanism.

[0008] The controller is capable of calculating the roll gap between the first casting roll and the second casting roll based on the first movement amount and the second movement amount.

[0009] In some embodiments, the first movable mechanism includes a first contact component and a first transmission component, the first transmission component being disposed within the mounting cavity, the first contact component being connected to the first transmission component, the first contact component passing through the first movable opening, and the first measuring device being connected to the first transmission component to detect the first movement amount of the first transmission component.

[0010] In some embodiments, the roll gap measuring device includes a rotating shaft, the first transmission assembly includes a first gear and a first rack, the rotating shaft and the first rack are mounted on the inner wall of the mounting cavity, the first gear is movably assembled to the rotating shaft, the first gear is fixedly connected to the first contact assembly and is drivenly connected to the first rack, and the first measuring instrument is connected to the first rack.

[0011] In some embodiments, the first gear component includes a first gear segment and a first fixed segment, the first gear segment being drivenly connected to the first rack, and the first fixed segment being fixedly connected to the first contact component.

[0012] In some embodiments, the first contact assembly includes a first rocker arm and a first pressure plate, the first rocker arm and the first pressure plate being connected to form a first fixing cavity, the inner wall of the first fixing cavity being embedded in the outer peripheral surface of the first fixing segment.

[0013] In some embodiments, the first movable mechanism further includes a first guide member disposed on the inner wall of the mounting cavity, the first guide member having a first guide groove disposed along the movable direction of the first rack, and the first rack being movably mounted in the first guide groove.

[0014] In some embodiments, the roll gap measuring device further includes a first elastic element, a second elastic element, and a mounting element. The first elastic element and the second elastic element are respectively disposed on both sides of the first rack. The mounting element is fixedly installed in the mounting cavity and disposed on the same side as the second elastic element. The first elastic element connects the first rack and the first measuring device, and the second elastic element connects the first rack and the mounting element.

[0015] In some embodiments, the first contact assembly includes a first swing arm and a first contact wheel. The first swing arm is fixedly connected to the first transmission assembly and passes through the first movable opening. The first contact wheel is disposed at the end of the first swing arm away from the first transmission assembly for contacting the first casting roll.

[0016] In some embodiments, the second movable mechanism includes a second contact component and a second transmission component, the second contact component being fixedly connected to the second transmission component, the second contact component passing through the second movable opening, and the second measuring device being connected to the second transmission component to detect the second amount of movement of the second transmission component.

[0017] Secondly, this application provides a roll gap measurement method based on the roll gap measurement device described above. The second movable mechanism includes a second contact component and a second transmission component. The second transmission component includes a second gear and a second rack. The second rack is mounted on the inner wall of the mounting cavity. The second gear is movably mounted on the rotating shaft. The second gear is fixedly connected to the second contact component and drivenly connected to the second rack. The second measuring device is connected to the second rack.

[0018] The roll gap measurement method includes:

[0019] Obtain the first measurement value S1 of the first measuring instrument and the second measurement value S2 of the second measuring instrument;

[0020] The first pressing angle θ1 of the first movable mechanism and the second pressing angle θ2 of the second movable mechanism are calculated based on the first measurement value S1 and the second measurement value S2, respectively.

[0021] The first pressing amount H1 of the first movable mechanism and the second pressing amount H2 of the second movable mechanism are calculated based on the first pressing angle θ1 and the second pressing angle θ2.

[0022] The roll gap G is calculated according to formula 1), which is:

[0023] G = L1 - H1 + L2 - H2

[0024] In Formula 1), L1 is the length of the first contact component and L2 is the length of the second contact component.

[0025] The beneficial effects of this application are as follows:

[0026] In the roll gap measuring device and roll gap measuring method provided in this application, when the first movable mechanism moves relative to and contacts the first casting roll, the first measuring device can detect the first movement amount of the first movable mechanism. When the second movable mechanism moves relative to and contacts the second casting roll, the second measuring device can detect the second movement amount of the second movable mechanism. The controller then calculates the roll gap between the first casting roll and the second casting roll based on the first movement amount and the second movement amount. That is, in this application, a measuring device is provided for each of the first casting roll and the second casting roll. The two measuring devices detect the first movement amount and the second movement amount respectively, and do not interfere with each other, thereby reducing the measurement error caused by the change of the casting roll position and improving the roll gap measuring accuracy. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0028] Figure 1 A schematic diagram of the roll gap measuring device is shown.

[0029] Figure 2 A schematic diagram showing the cooperation between the roll gap measuring device and the first and second casting rolls is shown.

[0030] Figure 3 It shows Figure 1 A sectional view.

[0031] Figure 4 It shows Figure 1 A structural diagram from another perspective.

[0032] Figure 5 It shows Figure 3 A magnified view of a portion of point A in the middle.

[0033] Figure 6 It shows Figure 5 A schematic diagram of the assembly of the first gear component, the second gear component, and the rotating shaft.

[0034] Figure 7 It shows Figure 6 A schematic diagram of the structure of the first gear component and the rotating shaft.

[0035] Figure 8 It shows Figure 6 A schematic diagram of the structure of the second gear component.

[0036] Figure 9 It shows Figure 4 A schematic diagram of the assembly of the first contact component and the second contact component.

[0037] Figure 10 It shows Figure 9 Another perspective on the assembly diagram.

[0038] Figure 11 A schematic diagram showing the relationship between the measured value and the amount of compression is shown.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10-Roll gap measuring device, 20-First casting roll, 30-Second casting roll, 100-Main body, 110-Mounting cavity, 111-First movable opening, 112-Second movable opening, 200-First measuring device, 300-First movable mechanism, 310-First contact assembly, 311-First swing arm, 3111-First swing rod, 3112-First pressure plate, 3113-First fixed cavity, 312-First contact wheel, 320-First transmission assembly, 321-First gear component, 3211-First gear segment, 3212-First fixed segment, 3213-Assembly segment, 322-First rack, 330-First guide component, 400-Second measuring device, 500-Second movable mechanism 510-Second contact assembly, 511-Second swing arm, 5111-Second swing rod, 5112-Second pressure plate, 5113-Second fixed cavity, 512-Second contact wheel, 520-Second transmission assembly, 521-Second gear component, 5211-Second gear segment, 5212-Second fixed segment, 522-Second rack, 530-Second guide component, 600-Rotating shaft, 700-First elastic component, 800-Second elastic component, 810-First ejector pin, 900-Third elastic component, 1000-Fourth elastic component, 1100-Second ejector pin, 1110-Mounting component, 1200-Mounting bracket, 1300-Partition plate, 1400-Controller, 1500-Power supply. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0045] 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 roller conveyor exit, 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. The drive rollers and support rollers together ensure the surface quality and dimensional accuracy of the billet.

[0046] The roll gap of a continuous casting machine is a key process parameter for ensuring the dimensional accuracy of the billet thickness and the quality of the product. However, in related technologies, the measurement accuracy of the roll gap is relatively low. This application provides a roll gap measuring device and a roll gap measuring method, which can improve the measurement accuracy of the roll gap.

[0047] The embodiments of this application will now be described with reference to the accompanying drawings:

[0048] Please see Figure 1 and Figure 2 This application provides a roll gap measuring device 10 for measuring the roll gap between a first casting roll 20 and a second casting roll 30 arranged in pairs within a continuous casting machine. The roll gap measuring device 10 can be disposed between the first casting roll 20 and the second casting roll 30 to measure the roll gap.

[0049] Please see Figures 1-3 In this embodiment, the roll gap measuring device 10 includes a main body 100, a first measuring device 200 and a first movable mechanism 300 connected together, a second measuring device 400 and a second movable mechanism 500 connected together, and a controller 1400. The main body 100 has a mounting cavity 110, a first movable port 111 and a second movable port 112 communicating with the mounting cavity 110, and the first movable port 111 and the second movable port 112 are arranged opposite each other along the axis of symmetry of the first casting roll 20 and the second casting roll 30.

[0050] A first measuring device 200 is disposed within the mounting cavity 110, and a portion of a first movable mechanism 300 passes through a first movable opening 111 for contacting a first casting roller 20. When the first movable mechanism 300 moves relative to and contacts the first casting roller 20, the first measuring device 200 can detect a first amount of movement of the first movable mechanism 300. A second measuring device 400 is disposed within the mounting cavity 110, and a portion of a second movable mechanism 500 passes through a second movable opening 112 for contacting a second casting roller 30. When the second movable mechanism 500 moves relative to and contacts the second casting roller 30, the second measuring device 400 can detect a second amount of movement of the second movable mechanism 500.

[0051] The controller 1400 is able to calculate the roll gap between the first casting roll 20 and the second casting roll 30 based on the first movement amount and the second movement amount.

[0052] It should be noted that both the drive roller and the support roller are cast rollers. The first cast roller 20 is any cast roller within the inner arc of the sector segment, and the second cast roller 30 is the cast roller within the corresponding outer arc of the sector segment. The sector segment includes a vertical segment, an arc segment, and a horizontal segment. For ease of description, this paper uses the roll gap measurement device 10 to measure the roll gap of any pair of cast rollers in the horizontal segment as an example. The direction closer to the inner arc is defined as up, and the direction closer to the outer arc is defined as down. The roll gap between the first cast roller 20 and the second cast roller 30 is the distance between the lowest point of the first cast roller 20 and the highest point of the second cast roller 30. The measurement method of the roll gap measurement device 10 in the vertical segment and the arc segment can be deduced by analogy.

[0053] Furthermore, since the structure of the first moving mechanism 300 is roughly the same as that of the second moving mechanism 500, this paper mainly describes the structure of the first moving mechanism 300 in detail, and the same applies to the second moving mechanism 500.

[0054] The main body 100 serves as the foundation structure of the roll gap measuring device 10, providing an installation base for other components of the roll gap measuring device 10 and protecting them. Furthermore, all other components are integrated into the main body 100, allowing the roll gap measuring device 10 to form a single unit, facilitating its installation and transportation. The main body 100 has a mounting cavity 110, a first movable opening 111, and a second movable opening 112 communicating with the mounting cavity 110. The first movable opening 111 is located near the first casting roll 20, and the second movable opening 112 is located near the second casting roll 30.

[0055] The first measuring device 200 is disposed in the mounting cavity 110, and the first movable mechanism 300 is movably mounted on the main body 100. Part of the first movable mechanism 300 is disposed in the mounting cavity 110, and part of it passes through the first movable opening 111, that is, part of it is located outside the mounting cavity 110, so that the first movable mechanism 300 can touch the first casting roller 20.

[0056] Please see Figure 2 The first casting roll 20 has a circular cross-section. Figure 2 Taking the orientation as an example (i.e., the first movable mechanism 300 moves from right to left), the first movable mechanism 300 will first contact the lower right part of the first casting roller 20 during the movement. The movement of the first movable mechanism 300 relative to the first casting roller 20 is the process of the first movable mechanism 300 moving from the lower right part of the first casting roller 20 to the lowest point of the first casting roller 20. During this process, the first movable mechanism 300 will be pressed down, thereby rotating to generate a first movement in the horizontal direction, and the first measuring device 200 can detect the first movement.

[0057] Similarly, during the movement of the second movable mechanism 500, it will first contact the upper right part of the second casting roller 30. The movement of the second movable mechanism 500 relative to the second casting roller 30 is the process of the second movable mechanism 500 moving from the upper right part of the second casting roller 30 to the highest point of the second casting roller 30. During this process, the second movable mechanism 500 will be lifted up, thereby rotating to generate a second movement in the horizontal direction, and the second measuring device 400 can detect the second movement.

[0058] Of course, the first movable mechanism 300 and the second movable mechanism 500 are roughly symmetrical. While the first movable mechanism 300 moves relative to the first casting roller 20 and contacts the first casting roller 20, the second movable mechanism 500 also moves relative to the second casting roller 30 and contacts the second casting roller 30.

[0059] After the first measuring device 200 and the second measuring device 400 detect the first movement amount and the second movement amount respectively, the controller 1400 can calculate the roll gap between the first casting roll 20 and the second casting roll 30 based on the first movement amount and the second movement amount. Compared with the prior art document (CN108687322B) which uses only one sensor (component 27) for measurement, in this application, each of the first casting roll 20 and the second casting roll 30 is equipped with a corresponding measuring device. The two measuring devices detect the first movement amount and the second movement amount respectively, and do not interfere with each other, thereby reducing the measurement error caused by the change of casting roll position and improving the roll gap measurement accuracy. Of course, the roll gap measuring device 10 also includes a power supply 1500 for power supply, and the power supply 1500 is also located in the mounting cavity 110.

[0060] It is worth mentioning that continuous casting machines are all equipped with dummy bars. The function of the dummy bar is to guide the billet continuously pulled out of the crystallizer, separate it from the billet after the drawing is completed, and receive and reload the dummy bar. During the operation of the sector section, the dummy bar is between the inner and outer arcs. The drive rollers of the inner and outer arcs guide the billet to move by rolling and dragging the dummy bar. Therefore, in order to move the roll gap measuring device 10 so that the first movable mechanism 300 moves relative to the first casting roll 20 and the second movable mechanism 500 moves relative to the second casting roll 30, the roll gap measuring device 10 can be installed on the dummy bar. In this way, the drive roller drives the dummy bar to move, which makes the first movable mechanism 300 move relative to the first casting roll 20 and the second movable mechanism 500 move relative to the second casting roll 30. During the movement of the dummy bar in the sector section, the first movable mechanism 300 can contact the casting rolls of each inner arc in sequence, and the second movable mechanism 500 can contact the casting rolls of each corresponding outer arc in sequence, thereby obtaining the roll gap of each pair of casting rolls. Of course, guided by the dummy bar, the roll gap measuring device 10 runs in the same direction as the casting direction of the continuous casting machine.

[0061] Furthermore, the dummy bar operates while the continuous casting machine is in operation, and the roll gap measuring device 10 is installed on the dummy bar. Therefore, when it is necessary to measure the roll gap, there is no need to stop the machine, and the roll gap can be measured online, which can further reduce production organization time and ensure output.

[0062] Please see Figure 1 In some embodiments, the first movable mechanism 300 includes a first contact component 310 and a first transmission component 320. The first transmission component 320 is disposed in the mounting cavity 110. The first contact component 310 is connected to the first transmission component 320. The first contact component 310 passes through the first movable opening 111. The first measuring device 200 is connected to the first transmission component 320 to detect the first movement amount of the first transmission component 320.

[0063] The first contact component 310 passes through the first movable opening 111 for contacting the first casting roller 20. Since the first contact component 310 is connected to the first transmission component 320, the first contact component 310 will rotate during the pressing process relative to the first casting roller 20, so that the first transmission component 320 will generate a first movement in the horizontal direction. Since the first measuring device 200 is connected to the first transmission component 320, the first movement of the first transmission component 320 can be detected.

[0064] Similarly, the second moving mechanism 500 includes a second contact component 510 and a second transmission component 520. The second transmission component 520 is disposed in the mounting cavity 110. The second contact component 510 is connected to the second transmission component 520. The second contact component 510 passes through the second moving opening 112. The second measuring device 400 is connected to the second transmission component 520 to detect the second movement amount of the second transmission component 520.

[0065] The second contact component 510 passes through the second movable opening 112 for contacting the second casting roller 30. Since the second contact component 510 is connected to the second transmission component 520, the second contact component 510 will rotate during the process of being lifted relative to the second casting roller 30, so that the second transmission component 520 will generate a second horizontal movement. Since the second measuring device 400 is connected to the second transmission component 520, the second movement of the second transmission component 520 can be detected.

[0066] Please see Figures 4-6 In some embodiments, the roll gap measuring device 10 includes a rotating shaft 600, and a first transmission assembly 320 includes a first gear 321 and a first rack 322. The rotating shaft 600 and the first rack 322 are mounted on the inner wall of the mounting cavity 110. The first gear 321 is movably mounted on the rotating shaft 600. The first gear 321 is fixedly connected to the first contact assembly 310 and is drivenly connected to the first rack 322. The first measuring device 200 is connected to the first rack 322.

[0067] The first rack 322 is arranged in the horizontal direction. Since the first gear component 321 is movably assembled on the rotating shaft 600, the first gear component 321 can rotate relative to the rotating shaft 600. Since the first gear component 321 is fixedly connected to the first contact component 310, the first contact component 310 can drive the first gear component 321 to rotate on the rotating shaft 600 during the pressing process, thereby driving the first rack 322 to move in the horizontal direction. Since the first measuring device 200 is connected to the first rack 322, the first movement of the first rack 322 can be measured.

[0068] Similarly, the second transmission assembly 520 includes a second gear 521 and a second rack 522. The second rack 522 is mounted on the inner wall of the mounting cavity 110. The second gear 521 is movably mounted on the rotating shaft 600. The second gear 521 is fixedly connected to the second contact assembly 510 and is drivenly connected to the second rack 522. The second measuring device 400 is connected to the second rack 522.

[0069] The second rack 522 is arranged horizontally. Of course, the second rack 522 is arranged opposite to the first rack 322. Since the second gear component 521 is movably mounted on the rotating shaft 600, the second gear component 521 can rotate relative to the rotating shaft 600. Since the second gear component 521 is fixedly connected to the second contact component 510, the second contact component 510 can drive the second gear component 521 to rotate on the rotating shaft 600 during the pressing process, thereby driving the second rack 522 to move horizontally. Since the second measuring instrument 400 is connected to the second rack 522, the second movement of the second rack 522 can be measured.

[0070] Specifically, the first measuring device 200 and the second measuring device 400 can be displacement sensors.

[0071] Please see Figures 6-8 In some embodiments, the first gear component 321 includes a first gear segment 3211 and a first fixed segment 3212. The first gear segment 3211 is connected to the first rack 322 in a transmission manner, and the first fixed segment 3212 is fixedly connected to the first contact component 310.

[0072] Since the first gear component 321 needs to be connected to the first rack 322 for transmission and to be fixedly connected to the first contact component 310, the first gear component 321 is divided into a first gear segment 3211 and a first fixed segment 3212. The first gear segment 3211 is the gear body, so that the connection between the first gear component 321 and the first rack 322 and the first contact component 310 does not interfere with each other and remains independent.

[0073] Similarly, the second gear component 521 also includes a second gear segment 5211 and a second fixed segment 5212. The second gear segment 5211 is connected to the second rack 522 for transmission, and the second fixed segment 5212 is fixedly connected to the second contact component 510.

[0074] Since the first gear component 321 and the second gear component 521 are both mounted on the rotating shaft 600, that is, the first gear component 321 and the second gear component 521 are coaxially arranged, the integration of the first movable mechanism 300 and the second movable mechanism 500 is improved, making the overall layout of the roll gap measuring device 10 more compact, which is conducive to reducing the overall size of the roll gap measuring device 10 and meeting the measurement needs in a narrow space.

[0075] Specifically, the first gear component 321 further includes an assembly section 3213 disposed between the first gear segment 3211 and the first fixed segment 3212, and the second gear component 521 is assembled in the assembly section 3213, thus achieving coaxial arrangement of the first gear component 321 and the second gear component 521. The second gear segment 5211 and the second fixed segment 5212 can be arranged adjacent to each other. Obviously, in the axial direction of the rotating shaft 600, the first gear segment 3211 and the second gear segment 5211 are misaligned, the first fixed segment 3212 and the second fixed segment 5212 are misaligned, therefore, correspondingly, the first rack 322 and the second rack 522 are also misaligned, and the first contact assembly 310 and the second contact assembly 510 are also misaligned.

[0076] Please see Figure 9 and Figure 10 In some embodiments, the first contact assembly 310 includes a first rocker arm 3111 and a first pressure plate 3112. The first rocker arm 3111 and the first pressure plate 3112 are connected to form a first fixing cavity 3113. The inner wall of the first fixing cavity 3113 is embedded in the outer peripheral surface of the first fixing segment 3212.

[0077] The inner wall of the first fixing cavity 3113 is embedded in the outer peripheral surface of the first fixing segment 3212, thereby fixing the first contact assembly 310 to the first fixing segment 3212. Specifically, the inner wall of the first fixing cavity 3113 may be provided with multiple grooves, and the outer peripheral surface of the first fixing segment 3212 is provided with multiple protrusions. The multiple protrusions are embedded in the corresponding grooves, that is, the inner wall of the first fixing cavity 3113 is embedded in the outer peripheral surface of the first fixing segment 3212.

[0078] The first rocker arm 3111 and the first pressure plate 3112 can be connected by bolts. After the inner wall of the first fixed cavity 3113 is embedded in the outer peripheral surface of the first fixed section 3212, the first rocker arm 3111 and the first pressure plate 3112 can be connected by bolts. When it is necessary to disassemble the first contact assembly 310, the bolts can be removed to separate the first rocker arm 3111 and the first pressure plate 3112.

[0079] Similarly, the second contact assembly 510 includes a second rocker arm 5111 and a second pressure plate 5112. The second rocker arm 5111 and the second pressure plate 5112 are connected to form a second fixing cavity 5113. The inner wall of the second fixing cavity 5113 is embedded in the outer peripheral surface of the second fixing section 5212.

[0080] Please see Figure 4 and Figure 5 In some embodiments, the first movable mechanism 300 further includes a first guide member 330 disposed on the inner wall of the mounting cavity 110. The first guide member 330 has a first guide groove, which is disposed along the movable direction of the first rack 322. The first rack 322 is movably mounted in the first guide groove.

[0081] The first guide groove is set in the horizontal direction. Since the first rack 322 is movably installed in the first guide groove, the first rack 322 can be installed on the main body 100. The first guide groove can provide guidance for the movement of the first rack 322, making the movement of the first rack 322 more stable and improving the measurement effect of the first measuring instrument 200.

[0082] Similarly, the second moving mechanism 500 also includes a second guide member 530 disposed on the inner wall of the mounting cavity 110. The second guide member 530 has a second guide groove, which is disposed along the moving direction of the second rack 522. The second rack 522 is movably installed in the second guide groove.

[0083] Please see Figure 1 In some embodiments, the roll gap measuring device 10 further includes a first elastic element 700, a second elastic element 800, and a mounting element 1110. The first elastic element 700 and the second elastic element 800 are respectively disposed on both sides of the first rack 322. The mounting element 1110 is fixedly installed in the mounting cavity 110 and disposed on the same side as the second elastic element 800. The first elastic element 700 connects the first rack 322 and the first measuring device 200, and the second elastic element 800 connects the first rack 322 and the mounting element 1110.

[0084] The first elastic element 700 and the second elastic element 800 are elastic, and their extension and contraction directions are consistent with the movement direction of the first rack 322. When the first contact component 310 moves relative to the first casting roller 20, causing the first rack 322 to move, one of the first elastic element 700 and the second elastic element 800 will extend and the other will contract. When the first contact component 310 passes the lowest point of the first casting roller 20, the pressing force on the first contact component 310 disappears, and the first elastic element 700 and the second elastic element 800 release elastic potential energy to drive the first rack 322 to reset. This, in turn, drives the first contact component 310 to reset through the first gear component 321, so that the first contact component 310 remains in a centered and upright state in preparation for contacting the next first casting roller 20.

[0085] Similarly, the roll gap measuring device 10 also includes a third elastic element 900, a fourth elastic element 1000, and a mounting element 1110. The third elastic element 900 and the fourth elastic element 1000 are respectively disposed on both sides of the second rack 522. The mounting element 1110 is fixedly installed in the mounting cavity 110 and is disposed on the same side as the fourth elastic element 1000. The third elastic element 900 connects the second rack 522 and the second measuring device 400, and the fourth elastic element 1000 connects the second rack 522 and the mounting element 1110.

[0086] When the second contact component 510 moves relative to the second casting roll 30, causing the second rack 522 to move, one of the third elastic element 900 and the fourth elastic element 1000 will extend and the other will contract. After the second contact component 510 passes the highest point of the second casting roll 30, the lifting force on the second contact component 510 disappears, and the third elastic element 900 and the fourth elastic element 1000 release elastic potential energy to drive the second rack 522 to reset. This, in turn, drives the second contact component 510 to reset via the second gear component 521, so that the second contact component 510 remains in a centered and upright state in preparation for contacting the next second casting roll 30.

[0087] Specifically, one side of the first rack 322 is connected to the first measuring device 200 via a first connecting rod, and the first connecting rod is fixedly connected to the first rack 322 and movably connected to the first measuring device 200, meaning the first connecting rod can slide within the first measuring device 200. A first elastic element 700 is sleeved on the first connecting rod. The other side of the first rack 322 is connected to the mounting component 1110 via a first ejector pin 810, and the first connecting rod is fixedly connected to the first rack 322 and movably connected to the mounting component 1110, meaning the first ejector pin 810 can slide within the mounting component 1110. A second elastic element 800 is sleeved on the first ejector pin 810. Thus, when the first rack 322 moves, the first connecting rod will extend and retract within the first measuring device 200, the first ejector pin 810 will slide within the mounting component 1110, and simultaneously, the first elastic element 700 and the second elastic element 800 will also extend and retract.

[0088] One side of the second rack 522 is connected to the second measuring device 400 via a second connecting rod, and the second connecting rod is fixedly connected to the second rack 522 and movably connected to the second measuring device 400, meaning the second connecting rod can slide within the second measuring device 400. The second elastic element 800 is sleeved on the second connecting rod. The other side of the second rack 522 is connected to the mounting part 1110 via a second ejector pin 1100, and the second connecting rod is fixedly connected to the second rack 522 and movably connected to the mounting part 1110, meaning the second ejector pin 1100 can slide within the mounting part 1110. The second elastic element 800 is sleeved on the second ejector pin 1100. Thus, when the second rack 522 moves, the second connecting rod will extend and retract within the second measuring device 400, the second ejector pin 1100 will slide within the mounting part 1110, and simultaneously the third elastic element 900 and the fourth elastic element 1000 will also extend and retract.

[0089] Among them, the first elastic element 700, the second elastic element 800, the third elastic element 900, and the fourth elastic element 1000 are all springs.

[0090] Please see Figure 4In some embodiments, the roll gap measuring device 10 further includes a mounting bracket 1200, which is fixedly disposed within the mounting cavity 110. The first measuring device 200 and the second measuring device 400 are mounted within the mounting bracket 1200 and fixed with screws. The relative positions of the first measuring device 200 and the second measuring device 400 with respect to the mounting bracket 1200 are finely adjustable. Before use, each elastic element should be pre-compressed, and the preload should preferably be set between 0.02 and 0.3 times the spring force. After each elastic element is engaged, the two measuring devices can be pressed together by tightening the screws on the mounting bracket 1200, thereby ensuring stability during measurement. Considering the influence of the nonlinear region of the two measuring devices, the preload setting range can be adjusted to between 0.1 and 0.3.

[0091] Please see Figure 9 and Figure 10 In some embodiments, the first contact assembly 310 includes a first swing arm 311 and a first contact wheel 312. The first swing arm 311 is fixedly connected to the first transmission assembly 320. The first swing arm 311 passes through the first movable opening 111. The first contact wheel 312 is disposed at the end of the first swing arm 311 away from the first transmission assembly 320 for contacting the first casting roller 20.

[0092] The first swing arm 311 includes a first swing rod 3111 and a first pressure plate 3112 to form a first fixed cavity 3113 and be fixedly connected to the first transmission assembly 320. The first contact wheel 312 is rotatably disposed at the end of the first swing arm 311 away from the first transmission assembly 320 for contacting the first casting roller 20. The first contact wheel 312 may be made of wear-resistant material or wear-resistant coating.

[0093] Similarly, the second contact assembly 510 includes a second swing arm 511 and a second contact wheel 512. The second swing arm 511 is fixedly connected to the second transmission assembly 520. The second swing arm 511 passes through the second movable opening 112. The second contact wheel 512 is disposed at the two ends of the second swing arm 511 away from the second transmission assembly 520 for contacting the second casting roller 30.

[0094] Please see Figure 4In some embodiments, the roll gap measuring device 10 further includes a partition 1300, which is disposed within the mounting cavity 110 to divide the mounting cavity 110 into a first chamber and a second chamber. A first measuring device 200 and a second measuring device 400 pass through the partition 1300. A controller 1400 and a power supply 1500 are both disposed in the first chamber, while a first movable mechanism 300 and a second movable mechanism 500 are disposed in the second chamber. The first movable port 111 and the second movable port 112 communicate with the second chamber. Separating the controller 1400 and the power supply 1500 from the first movable mechanism 300 and the second movable mechanism 500 provides protection for them. A cleaning structure can be provided in the second chamber to remove iron filings, oil stains, etc., that adhere to the swing arm or fall inside the casting machine during measurement, thereby preventing damage to the roll gap measuring device 10 to a certain extent and improving its service life.

[0095] Please see Figure 2 Based on the same inventive concept, this application also provides a roll gap measurement method. The roll gap measurement method is implemented based on the roll gap measuring device 10 described above. The second active mechanism 500 includes a second contact component 510 and a second transmission component 520. The second transmission component 520 includes a second gear component 521 and a second rack 522. The second rack 522 is installed on the inner wall of the mounting cavity 110. The second gear component 521 is movably assembled on the rotating shaft 600. The second gear component 521 is fixedly connected to the second contact component 510 and is transmittedly connected to the second rack 522. The second measuring device 400 is connected to the second rack 522.

[0096] Roll gap measurement methods include:

[0097] S100: Obtain the first measurement value S1 of the first measuring instrument 200 and the second measurement value S2 of the second measuring instrument 400.

[0098] When the first contact component 310 moves relative to the first casting roller 20, it will drive the first rack 322 to move. When the second contact component 510 moves relative to the second casting roller 30, it will drive the second rack 522 to move. The first measurement value S1 is the moving distance of the first rack 322, and the second measurement value S2 is the moving distance of the second rack 522.

[0099] Of course, the first measured value S1 must be less than the range of the first measuring instrument 200, and the second measured value S2 must be less than the range of the second measuring instrument 400.

[0100] S200: Calculate the first pressing angle θ1 of the first movable mechanism 300 and the second pressing angle θ2 of the second movable mechanism 500 based on the first measured value S1 and the second measured value S2, respectively.

[0101] Since the cross-sections of the first casting roller 20 and the second casting roller 30 are circular, the first movable mechanism 300 will rotate when it moves relative to the first casting roller 20, and the second movable mechanism 500 will rotate when it moves relative to the second casting roller 30. The first pressing angle θ1 of the first movable mechanism 300 is the rotation angle of the first contact component 310 relative to the first casting roller 20, and the second pressing angle θ2 of the second movable mechanism 500 is the rotation angle of the second contact component 510 relative to the second casting roller 30.

[0102] According to common sense, the distance the rack moves is the arc length on the pitch circle of the gear. In this embodiment, the pitch circle diameter d1 of the first gear 321 and the pitch circle diameter d2 of the second gear 521 are known. After obtaining the first measurement value S1 and the second measurement value S2, the first pressing angle θ1 and the second pressing angle θ2 can be calculated according to the formulas S1=πd1 / 360×θ1 and S2=πd2 / 360×θ2.

[0103] Of course, the first pressing angle θ1 must be less than the extreme value of the pressing angle of the first contact component 310, and the second pressing angle θ2 must be less than the extreme value of the pressing angle of the second contact component 510.

[0104] S300: Calculate the first pressing amount H1 of the first movable mechanism 300 and the second pressing amount H2 of the second movable mechanism 500 based on the first pressing angle θ1 and the second pressing angle θ2.

[0105] Since the first pressing angle θ1, the second pressing angle θ2, the length L1 of the first contact component 310, and the length L2 of the second contact component 510 are known, the first pressing amount H1 and the second pressing amount H2 can be calculated according to the formulas H1=L1-L1×coSθ1 and H2=L2-L2×coSθ2 respectively.

[0106] S400: Calculate the roll gap G according to formula 1), where formula 1) is:

[0107] G = L1 - H1 + L2 - H2

[0108] In Formula 1), L1 is the length of the first contact component 310, and L2 is the length of the first contact component 310. That is, based on the above steps, the roll gap G can be calculated using the first measurement value S1 and the second measurement value S2.

[0109] It is understood that the length of the first contact component 310 can be calculated based on the length of the first swing arm 311 and the radius of the first contact wheel 312, both of which are known quantities. Similarly, the length of the second contact component 510 can be calculated based on the length of the second swing arm 511 and the radius of the second contact wheel 512, both of which are known quantities and will not be elaborated further here.

[0110] And, please see Figure 11 The roll gap measuring device 10 of this application embodiment can obtain the curve equation of the first reduction amount and the first measured value (the second reduction amount and the second measured value are similar): y=ax2+bx+c. It is easy to see that the correlation of the curve is good, which is conducive to data fitting. According to actual measurement, the measurement accuracy can reach more than 0.1mm.

[0111] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0112] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A roll gap measurement method for measuring the roll gap between a pair of first and second casting rolls arranged in a continuous casting machine, characterized in that, The roll gap measurement method is implemented based on a roll gap measuring device, which includes: The main body has a mounting cavity, a first movable port and a second movable port communicating with the mounting cavity, and the first movable port and the second movable port are arranged opposite to each other along the axis of symmetry of the first casting roll and the second casting roll; A first measuring device and a first movable mechanism are connected. The first measuring device is disposed in the mounting cavity, and a portion of the first movable mechanism passes through the first movable opening to contact the first casting roll. When the first movable mechanism moves relative to and contacts the first casting roll, the first measuring device can detect a first amount of movement of the first movable mechanism. A second measuring device and a second movable mechanism are connected. The second measuring device is disposed in the mounting cavity, and a portion of the second movable mechanism passes through the second movable opening to contact the second casting roll. When the second movable mechanism moves relative to and contacts the second casting roll, the second measuring device can detect a second amount of movement of the second movable mechanism. A controller that can calculate the roll gap between the first casting roll and the second casting roll based on the first movement amount and the second movement amount; The first movable mechanism includes a first contact component and a first transmission component. The first transmission component is disposed in the mounting cavity. The first contact component is connected to the first transmission component. The first contact component passes through the first movable opening. The first measuring device is connected to the first transmission component to detect the first movement amount of the first transmission component. The roll gap measuring device includes a rotating shaft, the first transmission assembly includes a first gear and a first rack, the rotating shaft and the first rack are installed on the inner wall of the mounting cavity, the first gear is movably assembled on the rotating shaft, the first gear is fixedly connected to the first contact assembly and is drivenly connected to the first rack, and the first measuring instrument is connected to the first rack. The second active mechanism includes a second contact component and a second transmission component. The second transmission component includes a second gear and a second rack. The second rack is mounted on the inner wall of the mounting cavity. The second gear is movably mounted on the rotating shaft. The second gear is fixedly connected to the second contact component and is drivenly connected to the second rack. The second measuring device is connected to the second rack. The roll gap measurement method includes: Obtain the first measurement value S1 of the first measuring instrument and the second measurement value S2 of the second measuring instrument; wherein, the first measurement value S1 is the moving distance of the first rack and the second measurement value S2 is the moving distance of the second rack; The first pressing angle θ1 of the first movable mechanism and the second pressing angle θ2 of the second movable mechanism are calculated based on the first measurement value S1 and the second measurement value S2, respectively. The first pressing amount H1 of the first movable mechanism and the second pressing amount H2 of the second movable mechanism are calculated based on the first pressing angle θ1 and the second pressing angle θ2. The roll gap G is calculated according to formula 1), which is: G = L1 - H1 + L2 - H2 In Formula 1), L1 is the length of the first contact component, and L2 is the length of the second contact component; Specifically, the first compression angle θ1 and the second compression angle θ2 are calculated according to the formulas S1=(πd1 / 360)×θ1 and S2=(πd2 / 360)×θ2, respectively; the first compression amount H1 and the second compression amount H2 are calculated according to the formulas H1=L1-L1×cosθ1 and H2=L2-L2×cosθ2, respectively; d1 is the pitch circle diameter of the first gear component and d2 is the pitch circle diameter of the second gear component.

2. The roll gap measurement method according to claim 1, characterized in that, The first gear component includes a first gear segment and a first fixed segment. The first gear segment is connected to the first rack in a transmission manner, and the first fixed segment is fixedly connected to the first contact component.

3. The roll gap measurement method according to claim 1, characterized in that, The first contact assembly includes a first rocker arm and a first pressure plate. The first rocker arm and the first pressure plate are connected to form a first fixed cavity. The inner wall of the first fixed cavity is embedded in the outer peripheral surface of the first fixed segment.

4. The roll gap measurement method according to claim 1, characterized in that, The first movable mechanism further includes a first guide member disposed on the inner wall of the mounting cavity. The first guide member has a first guide groove, which is disposed along the movable direction of the first rack, and the first rack is movably mounted in the first guide groove.

5. The roll gap measurement method according to claim 1, characterized in that, The roll gap measuring device further includes a first elastic element, a second elastic element, and a mounting component. The first elastic element and the second elastic element are respectively disposed on both sides of the first rack. The mounting component is fixedly installed in the mounting cavity and disposed on the same side as the second elastic element. The first elastic element connects the first rack and the first measuring device, and the second elastic element connects the first rack and the mounting component.

6. The roll gap measurement method according to claim 1, characterized in that, The first contact assembly includes a first swing arm and a first contact wheel. The first swing arm is fixedly connected to the first transmission assembly and passes through the first movable opening. The first contact wheel is located at the end of the first swing arm away from the first transmission assembly for contacting the first casting roll.

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