Roll gap measuring device and roll gap measuring method

Abstract

The invention relates to the technical field of steelmaking, in particular to a roll gap measuring device and a roll gap measuring method. The roll gap measuring device provided by the embodiment of the invention comprises a shell, a first measurer, a first movable mechanism, a second measurer, a second movable mechanism and a controller, wherein the first measurer and the first movable mechanism are connected; a mounting hole is formed in the outer wall of the shell; the first measurer is arranged in the shell, and under the condition that the first movable mechanism moves relative to the first casting roller and makes contact with the first casting roller, the first measurer can detect the first movement amount of the first movable mechanism. Under the condition that the second movable mechanism moves relative to the second casting roller and is in contact with the second casting roller, the second measurer can detect the second movement amount of the second movable 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] The present invention relates to the technical field of steelmaking, and in particular to a roll gap measuring device and a roll gap measuring method. Background Art

[0002] The roll gap of a continuous casting machine is a critical process parameter for ensuring the thickness and dimensional accuracy of the ingot and ensuring product quality. Poor roll gap accuracy can lead to dimensional inaccuracies in wedge-shaped ingots and other products. Furthermore, it can cause center segregation, resulting in different microstructures along the width and thickness of the ingot. This can lead to significant performance differences between coils within a heat, or even within the same coil, during downstream hot rolling. This can easily cause problems such as stamping cracking and bending cracking, resulting in products that fail to meet customer requirements. In severe cases, bulging can also occur, making breakouts and other serious accidents more likely. However, existing technologies for measuring the roll gap have low accuracy. Summary of the Invention

[0003] The present application provides a roll gap measuring device and a roll gap measuring method, which to a certain extent improve the technical problem of low roll gap measurement accuracy in the related art.

[0004] In a first aspect, an embodiment of the present application provides a roll gap measuring device for measuring the roll gap between a first casting roll and a second casting roll arranged in pairs in a continuous casting machine, comprising:

[0005] A housing, wherein an outer wall of the housing has a mounting hole;

[0006] a first measuring device and a first movable mechanism connected thereto, wherein the first measuring device is disposed within the housing, and a portion of the first movable mechanism is disposed through the mounting hole so as to contact the first casting roll; when the first movable mechanism moves relative to the first casting roll and contacts the first casting roll, the first measuring device is capable of detecting a first movement amount of the first movable mechanism;

[0007] a second measuring device and a second movable mechanism connected thereto, the second measuring device being disposed within the housing, and a portion of the second movable mechanism being assembled with the first movable mechanism and passing through the mounting hole so as to contact the second casting roll; the second measuring device being capable of detecting a second movement amount of the second movable mechanism when the second movable mechanism moves relative to and contacts the second casting roll;

[0008] A controller is provided, wherein the controller is capable of calculating a roll gap between the first casting roll and the second casting roll according to the first movement amount and the second movement amount.

[0009] In some embodiments, the first movable mechanism includes a connected first contact component and a first transmission component, a portion of the first transmission component is passed through the mounting hole, a portion of the second movable mechanism is assembled on the first transmission component, the first contact component is arranged outside the shell, and the first measuring device is connected to the first transmission component to detect the first movement amount of the first transmission component.

[0010] In some embodiments, the first transmission assembly includes a first gear member and a first rack, the first gear member is movably inserted into the mounting hole, the first gear member is sleeved on a portion of the second movable mechanism, the first rack is movably installed in the housing, the first gear member is fixedly connected to the first contact assembly and is transmission-connected to the first rack, and the first measuring device is connected to the first rack.

[0011] In some embodiments, the first gear member includes a first gear portion and a first fixed portion, the first gear portion is drivingly connected to the first rack, and the first fixed portion is fixedly connected to the first contact assembly.

[0012] In some embodiments, the shell has a limiting cavity connected to the mounting hole, a first guide cavity connected to the limiting cavity, the first gear member is installed in the limiting cavity, and the first rack is installed in the first guide cavity.

[0013] In some embodiments, the roller gap measuring device further includes a first elastic member and a second elastic member mounted on the housing, the first elastic member and the second elastic member being respectively connected to both sides of the first rack, and the first elastic member and the second elastic member extending and retracting along the moving direction of the first rack.

[0014] In some embodiments, the first rack has a first conical surface, the central axis of the first conical surface is arranged along the roller gap direction, and the shell has a first guide column, which is movably arranged in the first conical surface.

[0015] In some embodiments, the roll gap measuring device further includes a telescopic member mounted on the housing, and a telescopic end of the telescopic member is connected to the first rack.

[0016] In some embodiments, the second movable mechanism includes a connected second contact component and a second transmission component, a portion of the second transmission component is assembled on the first movable mechanism and passed through the mounting hole, the second contact component is arranged outside the shell, and the second measuring device is connected to the second transmission component to detect the second movement amount of the second transmission component.

[0017] In a second aspect, an embodiment of the present application provides a roll gap measurement method, which is implemented based on the roll gap measurement device as described above, wherein the second movable mechanism includes a second contact assembly and a second transmission assembly that are connected to each other, the second transmission assembly includes a second gear member and a second rack, the second gear member is assembled to the first gear member and movably penetrates the mounting hole, the second rack is movably mounted in the housing, the second contact assembly is disposed outside the housing, the second gear member is fixedly connected to the second contact assembly and is transmission-connected to the second rack, and the second measuring device is connected to the second rack;

[0018] The roll gap measurement method comprises:

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

[0020] Calculate a first depression angle θ1 of the first movable mechanism and a second depression angle θ2 of the second movable mechanism according to the first measurement value S1 and the second measurement value S2 respectively;

[0021] Calculating a first pressing amount H1 of the first movable mechanism and a second pressing amount H2 of the second movable mechanism according to 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 a roll gap measuring device and a roll gap measuring method provided by the present application, when the first movable mechanism moves relative to the first casting roll 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 the second casting roll 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 the present application, a measuring device is correspondingly provided for the first casting roll and the second casting roll, and 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 measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention.

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

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

[0030] Figure 3 A structural schematic diagram of the roll gap measuring device from another perspective is shown.

[0031] Figure 4 A schematic diagram of the internal structure of the roll gap measuring device is shown.

[0032] Figure 5 The figure shows an assembly diagram of the first movable mechanism and the second movable mechanism.

[0033] Figure 6 Shown Figure 5 Schematic diagram of the structure of the first gear part.

[0034] Figure 7 Shown Figure 5 Schematic diagram of the structure of the second gear member.

[0035] Figure 8 Shown Figure 5 Schematic diagram of the local structure.

[0036] Figure 9 Shown Figure 8 Schematic diagram of the structure of the first rack and the second rack.

[0037] Description of the accompanying drawings:

[0038] 10-roll gap measuring device, 20-first casting roll, 30-second casting roll, 100-housing, 110-main body, 112-limiting cavity, 113-first guide cavity, 114-second guide cavity, 120-cover plate, 130-first guide column, 140-second guide column, 150-end cover, 200-first measuring device, 300-first movable mechanism, 310-first contact assembly, 311-first swing arm, 312-first contact wheel, 320-first transmission assembly, 321-first gear member, 3211-first gear unit, 321 2-first fixed part, 322-first rack, 3221-first conical surface, 400-second measuring device, 500-second movable mechanism, 510-second contact assembly, 511-first swing arm, 512-second contact wheel, 520-second transmission assembly, 521-second gear member, 5211-second gear part, 5212-second fixed part, 522-second rack, 5221-second conical surface, 600-telescopic member, 700-first elastic member, 800-second elastic member, 900-third elastic member, 1000-fourth elastic member. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not 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 such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] A continuous casting machine is a metallurgical device that solidifies and presses molten steel into ingots. During casting, the ingots travel from the mold to the roller table exit, passing through a sector. A sector consists of multiple drive rollers and pairs of support rollers. Some sectors have multiple pairs of drive rollers, each consisting of two opposing drive rollers and two opposing support rollers. A gap is defined between the two drive and support rollers. The inner and outer drive and support rollers form the inner arc of the sector, while the outer drive and support rollers form the outer arc. The drive rollers are driven by a motor. During the casting process, the inner and outer drive rollers guide the ingot by rolling and dragging the dummy rod. The support rollers press the ingot down, and the ingot rotates as it moves. Together, the drive and support rollers ensure the surface quality and dimensional accuracy of the ingot.

[0044] The roll gap of a continuous casting machine is a key process parameter to ensure the thickness dimensional accuracy of the ingot and the quality of the product. However, in the related art, the measurement accuracy of the roll gap is low. The embodiment of the present application provides a roll gap measurement device and a roll gap measurement method, which can improve the roll gap measurement accuracy.

[0045] Next, the embodiments of the present application will be described with reference to the accompanying drawings:

[0046] See also Figure 1 and Figure 2 The present invention 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 a pair in a continuous casting machine. The roll gap measuring device 10 can be arranged between the first casting roll 20 and the second casting roll 30 to measure the roll gap.

[0047] See also Figure 1-Figure 4In this embodiment of the present application, the roll gap measuring device 10 includes a housing 100, a first measuring device 200 and a first movable mechanism 300 connected thereto, a second measuring device 400 and a second movable mechanism 500 connected thereto, and a controller. The housing 100 has a mounting hole on its outer wall. The first measuring device 200 is disposed within the housing 100, and a portion of the first movable mechanism 300 extends through the mounting hole, allowing it to contact the first casting roll 20. When the first movable mechanism 300 moves relative to and contacts the first casting roll 20, the first measuring device 200 can detect a first movement amount of the first movable mechanism 300.

[0048] The second measuring device 400 is disposed within the housing 100. A portion of the second movable mechanism 500 is assembled on the first movable mechanism 300 and extends through the mounting hole so as to contact the second casting roll 30. When the second movable mechanism 500 moves relative to and contacts the second casting roll 30, the second measuring device 400 can detect a second movement amount of the second movable mechanism 500. The controller can calculate the roll gap between the first casting roll 20 and the second casting roll 30 based on the first and second movement amounts.

[0049] It should be noted that both the drive roll and the support roll are casting rolls. The first casting roll 20 is any casting roll in the inner arc of a sector, and the second casting roll 30 is a casting roll in the outer arc of its corresponding sector. A sector includes vertical, arc, and horizontal segments. For ease of description, this article uses the roll gap measurement device 10 measuring the roll gap of any pair of casting rolls in a horizontal segment as an example. The direction approaching the inner arc is defined as upward, and the direction approaching the outer arc is defined as downward. The roll gap between the first casting roll 20 and the second casting roll 30 is the distance between the lowest point of the first casting roll 20 and the highest point of the second casting roll 30. The measurement method of the roll gap measurement device 10 in vertical and arc segments can be similarly applied.

[0050] Furthermore, since the structure of the first movable mechanism 300 is substantially the same as that of the second movable mechanism 500 , this article mainly describes the structure of the first movable mechanism 300 in detail, and the same applies to the second movable mechanism 500 .

[0051] The housing 100 is the basic structure of the roll gap measuring device 10, providing a mounting base for and protecting the other components of the roll gap measuring device 10. Furthermore, all other components are integrated into the housing 100, allowing the roll gap measuring device 10 to form a single unit, facilitating installation and transportation of the roll gap measuring device 10. Specifically, the housing 100 may include a main body 110 and a cover 120. The first measuring device 200, the first movable mechanism 300, the second measuring device 400, the second movable mechanism 500, and the mounting holes may be disposed on the main body 110 or the cover 120. The cover 120 is connected to the main body 110 to form a sealed chamber within the housing 100, thereby protecting the aforementioned components.

[0052] The outer wall of the housing 100 has a mounting hole, and a portion of the first movable mechanism 300 is inserted into the mounting hole, so that the portion of the first movable mechanism 300 is located outside the housing 100 and can touch the first casting roll 20; a portion of the second movable mechanism 500 is assembled with the first movable mechanism 300 and inserted into the mounting hole, that is, the portion of the second movable mechanism 500 is assembled with the portion of the first movable mechanism 300 inserted into the mounting hole, so that the portion of the second movable mechanism 500 also inserts into the mounting hole, thereby making the portion of the second movable mechanism 500 located outside the housing 100 and touching the second casting roll 30.

[0053] See also Figure 2 The cross section of the first casting roll 20 is circular. Figure 2 Taking the orientation in FIG. 1 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 portion of the first casting roll 20 during the movement. The movement of the first movable mechanism 300 relative to the first casting roll 20 is a process in which the first movable mechanism 300 moves from the lower right portion of the first casting roll 20 to the lowest point of the first casting roll 20. During this process, the first movable mechanism 300 will be pressed down and rotated to generate a first movement amount in the horizontal direction, and the first measuring device 200 can detect the first movement amount.

[0054] Similarly, during its movement, the second movable mechanism 500 will first contact the upper right portion of the second casting roll 30. The second movable mechanism 500's movement relative to the second casting roll 30 is a process in which the second movable mechanism 500 moves from the upper right portion of the second casting roll 30 to the highest point of the second casting roll 30. During this process, the second movable mechanism 500 is lifted up and rotated to generate a second horizontal movement, which can be detected by the second measuring device 400.

[0055] Of course, the first movable mechanism 300 and the second movable mechanism 500 are substantially symmetrical. When the first movable mechanism 300 moves relative to the first casting roll 20 and contacts the first casting roll 20 , the second movable mechanism 500 also moves relative to the second casting roll 30 and contacts the second casting roll 30 .

[0056] After the first measuring device 200 and the second measuring device 400 detect the first and second movement amounts, respectively, the controller can calculate the roll gap between the first casting roll 20 and the second casting roll 30 based on the first and second movement amounts. Compared to the reference document (CN108687322B), which uses only one sensor (component 27) for measurement, the present application provides a corresponding measuring device for each of the first casting roll 20 and the second casting roll 30. The two measuring devices detect the first and second movement amounts, respectively, without interfering with each other, thereby reducing measurement errors caused by changes in casting roll position and improving roll gap measurement accuracy. Of course, the roll gap measurement device 10 also includes a power supply for power supply, which is also located within the housing 100.

[0057] It's worth noting that continuous casting machines are all equipped with dummy bars. The dummy bars guide the continuous pulling of the strand from the mold, separate it from the strand after drawing, and facilitate storage and reloading of the dummy bars. During segment operation, the dummy bars are positioned between the inner and outer arcs. The drive rollers of the inner and outer arcs guide the strand by rolling and dragging the dummy bars. Therefore, to move the roll gap measuring device 10, such 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 mounted on the dummy bars. In this way, the drive rollers drive the dummy bars to move, causing the first movable mechanism 300 to move relative to the first casting roll 20 and the second movable mechanism 500 to move relative to the second casting roll 30. As the dummy bars move within the segment, the first movable mechanism 300 sequentially contacts each inner arc casting roll, and the second movable mechanism 500 sequentially contacts each outer arc casting roll, thereby determining the roll gap for each pair of casting rolls. Of course, under the guidance of the dummy bar, the running direction of the roll gap measuring device 10 is consistent with the casting direction of the continuous casting machine.

[0058] In addition, the dummy bar is operated when the continuous casting machine is in operation, and the roll gap measuring device 10 is installed on the dummy bar. Therefore, when the roll gap needs to be measured, there is no need to stop the machine, and the roll gap can be measured online, thereby further reducing production organization time and ensuring output.

[0059] See also Figure 4In some embodiments, the first movable mechanism 300 includes a first contact component 310 and a first transmission component 320 connected to each other, a portion of the first transmission component 320 is passed through the mounting hole, a portion of the second movable mechanism 500 is assembled on the first transmission component 320, the first contact component 310 is arranged outside the shell 100, and 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.

[0060] Because a portion of the first transmission assembly 320 is inserted through the mounting hole, that is, the portion of the first transmission assembly 320 is located outside the housing 100, the first contact assembly 310 is fixedly connected to the portion of the first transmission assembly 320 located outside the housing 100, thereby allowing the first contact assembly 310 to be disposed outside the housing 100. A portion of the second movable mechanism 500 is assembled to the portion of the first transmission assembly 320 inserted through the mounting hole. Because the first contact assembly 310 is connected to the first transmission assembly 320, when the first contact assembly 310 is moved relative to the first casting roll 20 and pressed downward, the first contact assembly 310 rotates, causing the first transmission assembly 320 to generate a first horizontal movement. Because the first measuring device 200 is connected to the first transmission assembly 320, the first movement of the first transmission assembly 320 can be detected.

[0061] Similarly, the second movable mechanism 500 includes a connected second contact component 510 and a second transmission component 520. Part of the second transmission component 520 is assembled on the first movable mechanism 300 and passed through the mounting hole. The second contact component 510 is arranged outside the shell 100. 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.

[0062] The second transmission assembly 520 is partially assembled to the first transmission assembly 320. Since the second contact assembly 510 is connected to the second transmission assembly 520, when the second contact assembly 510 is moved and lifted relative to the second casting roll 30, the second contact assembly 510 rotates, causing the second transmission assembly 520 to generate a second horizontal movement. Since the second measuring device 400 is connected to the second transmission assembly 520, the second movement of the second transmission assembly 520 can be detected.

[0063] See also Figure 5-Figure 8 In some embodiments, the first transmission assembly 320 includes a first gear member 321 and a first rack 322. The first gear member 321 is movably inserted into the mounting hole. The first gear member 321 is sleeved on a portion of the second movable mechanism 500. The first rack 322 is movably installed in the housing 100. The first gear member 321 is fixedly connected to the first contact assembly 310 and is in transmission connection with the first rack 322. The first measuring device 200 is connected to the first rack 322.

[0064] The first gear member 321 is sleeved over the second movable mechanism 500, thereby assembling the second movable mechanism 500 with the first movable mechanism 300. The first rack 322 is arranged horizontally. Since the first gear member 321 is movably inserted into the mounting hole and is fixedly connected to the first contact assembly 310, when the first contact assembly 310 is pressed down, it can drive the first gear member 321 to rotate, thereby driving the first rack 322 to move horizontally. Since the first measuring device 200 is connected to the first rack 322, the first movement of the first rack 322 can be measured.

[0065] Similarly, the second transmission assembly 520 includes a second gear member 521 and a second rack 522. The second gear member 521 is sleeved on a portion of the first gear member 321, so that the second gear member 521 is also passed through the mounting hole. The second rack 522 is movably mounted in the housing 100. The second gear member 521 is fixedly connected to the second contact assembly 510 and is transmission-connected to the second rack 522. The second measuring device 400 is connected to the second rack 522.

[0066] The second rack 522 is arranged in the horizontal direction. Since the second gear member 521 is movably inserted into the mounting hole and the second gear member 521 is fixedly connected to the second contact assembly 510, the second contact assembly 510 can drive the second gear member 521 to rotate during the lifting process, thereby driving the second rack 522 to move in the horizontal direction. Since the second measuring device 400 is connected to the second rack 522, the second movement amount of the second rack 522 can be measured.

[0067] Specifically, the first measurer 200 and the second measurer 400 may be displacement sensors.

[0068] In some embodiments, the roller gap measuring device 10 further includes an end cover 150, which is mounted on the outer wall of the shell 100 by a plurality of screws. The end cover 150 has a through hole corresponding to the mounting hole, and the first gear member 321 is passed through the through hole to axially position the first gear member 321 and the second gear member 521.

[0069] In some embodiments, the first gear member 321 includes a first gear portion 3211 and a first fixing portion 3212 . The first gear portion 3211 is in transmission connection with the first rack 322 , and the first fixing portion 3212 is fixedly connected to the first contact assembly 310 .

[0070] Because the first gear member 321 is required to be both transmission-connected to the first rack 322 and fixedly connected to the first contact assembly 310, a first gear portion 3211 and a first fixed portion 3212 are provided on the first gear member 321. The first gear portion 3211 is the gear body. This ensures that the connections between the first gear member 321, the first rack 322, and the first contact assembly 310 do not interfere with each other and remain independent. Of course, the first gear portion 3211 and the first fixed portion 3212 can be provided at either end of the first gear member 321, with the first gear portion 3211 located within the housing 100 for transmission connection with the first rack 322, and the first fixed portion 3212 located outside the housing 100 for fixed connection with the first contact assembly 310.

[0071] Similarly, the second gear member 521 includes a second gear portion 5211 and a second fixing portion 5212 . The second gear portion 5211 is in transmission connection with the second rack 522 , and the second fixing portion 5212 is fixedly connected to the second contact assembly 510 .

[0072] Obviously, the first gear member 321 is sleeved on the second gear member 521 to form an integral gear assembly, which is passed through the mounting hole, so that the first gear member 321 and the second gear member 521 are both passed through the mounting hole. Of course, in order not to affect the respective functions of the first gear member 321 and the second gear member 521, the first gear portion 3211 and the second gear portion 5211 need to be staggered, and the first fixing portion 3212 and the second fixing portion 5212 need to be staggered.

[0073] Since the first gear member 321 is sleeved on the second gear member 521, that is, the first gear member 321 and the second gear member 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 requirements in a small space.

[0074] Specifically, the first gear portion 3211 and the second gear portion 5211 can be disposed vertically opposite each other, and thus the first rack 322 and the second rack 522 are also disposed vertically opposite each other, with the first rack 322 located above the first gear portion 3211 and the second rack 522 located below the first gear portion 3211. The second fixing portion 5212 can extend from the first gear member 321, so that the second fixing portion 5212 is offset from the first fixing portion 3212 in the axial direction of the first gear member 321. Accordingly, the first contact assembly 310 and the second contact assembly 510 are also offset in the axial direction so as not to interfere with each other.

[0075] See also Figure 8In some embodiments, the housing 100 has a limiting cavity 112 connected to the mounting hole, a first guide cavity 113 connected to the limiting cavity 112, the first gear member 321 is installed in the limiting cavity 112, and the first rack 322 is installed in the first guide cavity 113.

[0076] The limiting cavity 112 is connected to the mounting hole, so that the first gear member 321 can be installed in the limiting cavity 112 and pass through the mounting hole. The first gear member 321 is installed in the limiting cavity 112, that is, the first gear member 321 is in contact with the inner wall of the limiting cavity 112, which can make the rotation of the first gear member 321 more stable. The first guide cavity 113 is arranged in a horizontal direction. Since the first rack 322 is movably mounted in the first guide cavity 113, the first rack 322 can be installed on the housing 100. The first guide cavity 113 also provides 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 device 200. The first guide cavity 113 is connected to the limiting cavity 112, so that the first gear member 321 is in transmission connection with the first rack 322.

[0077] Similarly, the housing 100 further has a second guide cavity 114 communicating with the limiting cavity 112 . The second gear member 521 is installed in the limiting cavity 112 , and the second rack 522 is installed in the second guide cavity 114 .

[0078] See also Figure 8 In some embodiments, the roller gap measuring device 10 further includes a first elastic member 700 and a second elastic member 800 installed on the housing 100, and the first elastic member 700 and the second elastic member 800 are respectively connected to both sides of the first rack 322, and the first elastic member 700 and the second elastic member 800 extend and retract along the moving direction of the first rack 322.

[0079] The first elastic member 700 and the second elastic member 800 are elastic, and their expansion and contraction directions are consistent with the movement direction of the first rack 322. When the first contact assembly 310 moves relative to the first casting roll 20, causing the first rack 322 to move, one of the first elastic member 700 and the second elastic member 800 will expand and the other will contract. When the first contact assembly 310 passes the lowest point of the first casting roll 20, the pressing force on the first contact assembly 310 disappears, and the first elastic member 700 and the second elastic member 800 release their elastic potential energy to drive the first rack 322 to reset, thereby driving the first contact assembly 310 to reset via the first gear member 321, so that the first contact assembly 310 remains in a centered upright state in preparation for contacting the next first casting roll 20.

[0080] Similarly, the roller gap measuring device 10 also includes a third elastic member 900 and a fourth elastic member 1000 installed on the shell 100. The third elastic member 900 and the fourth elastic member 1000 are respectively connected to the two sides of the second rack 522. The third elastic member 900 and the fourth elastic member 1000 extend and retract along the moving direction of the second rack 522.

[0081] The third elastic member 900 and the fourth elastic member 1000 are elastic, and their expansion and contraction directions are consistent with the movement direction of the second rack 522. When the second contact assembly 510 moves relative to the second casting roll 30, causing the second rack 522 to move, one of the third elastic member 900 and the fourth elastic member 1000 will expand and the other will contract. When the second contact assembly 510 passes the lowest point of the second casting roll 30, the lifting force on the second contact assembly 510 disappears, and the third elastic member 900 and the fourth elastic member 1000 release their elastic potential energy to drive the second rack 522 to reset, thereby driving the second contact assembly 510 to reset via the second gear member 521, so that the second contact assembly 510 remains in a centered upright state, ready for contact with the next second casting roll 30.

[0082] Specifically, the first elastic member 700 and the second elastic member 800 are both disposed within the first guide cavity 113, i.e., the first elastic member 700 and the second elastic member 800 are both connected to the first rack 322 and the inner wall of the first guide cavity 113. One side of the first rack 322 is connected to the first measuring device 200 via a first connecting rod. The first connecting rod is fixedly connected to the first rack 322 and movably connected to the first measuring device 200, i.e., the first connecting rod is slidable within the first measuring device 200. The first elastic member 700 is sleeved on the first connecting rod, and the other side of the first rack 322 is directly connected to the inner wall of the limiting cavity 112 via the second elastic member 800.

[0083] The third elastic member 900 and the fourth elastic member 1000 are both disposed within the first guide cavity 113, that is, the third elastic member 900 and the fourth elastic member 1000 are both connected to the first rack 322 and the inner wall of the first guide cavity 113. One side of the first rack 322 is connected to the first measuring device 200 via a first connecting rod. The first connecting rod is fixedly connected to the first rack 322 and movably connected to the first measuring device 200, that is, the first connecting rod can slide within the first measuring device 200. The third elastic member 900 is sleeved on the first connecting rod, and the other side of the first rack 322 is directly connected to the inner wall of the limiting cavity 112 via the fourth elastic member 1000.

[0084] Specifically, the first elastic member 700 , the second elastic member 800 , the third elastic member 900 , and the fourth elastic member 1000 are all springs.

[0085] In some embodiments, the roller gap measuring device 10 further includes a mounting bracket, which is fixedly disposed within the housing 100. The first measuring device 200 and the second measuring device 400 are mounted within the mounting bracket and fixed by screws. The relative position of the first measuring device 200 and the first rack 322, and the relative position of the second measuring device 400 and the second rack 522 can be fine-tuned. Before use, it should be ensured that each elastic member is in a pre-compressed state, and the preload force should be set between 0.02 and 0.3 times the spring force. After each elastic member is in place, the two measuring devices can be compressed by tightening the screws on the mounting bracket, thereby ensuring stability during measurement. At the same time, considering the influence of the nonlinear region of the two measuring devices, the preload force setting range can be adjusted to between 0.1 and 0.3.

[0086] See also Figure 8 and Figure 9 In some embodiments, the first rack 322 has a first conical surface 3221 , the central axis of the first conical surface 3221 is arranged along the roller gap direction, and the shell 100 has a first guide column 130 , which is movably arranged in the first conical surface 3221 .

[0087] It can be understood that when the first contact component 310 is in a free state without being acted upon by any force, under the action of the first elastic member 700 and the second elastic member 800 , the first contact component 310 is in an upright state, that is, the first contact component 310 is arranged along the roller gap direction.

[0088] The first conical surface 3221 is disposed on the top surface of the first rack 322, and the first guide post 130 is disposed above the first rack 322. Since the first guide post 130 is movably disposed within the first conical surface 3221, when the first contact assembly 310 moves relative to the first casting roll 20, the first rack 322 moves, and the first guide post 130 also moves within the first conical surface 3221. After the first contact assembly 310 passes the lowest point of the first casting roll 20, the first contact assembly 310 is restored to an upright position under the elastic action of the first elastic member 700 and the second elastic member 800. At the same time, the first guide post 130, guided by the inclined surface within the first conical surface 3221, moves to the apex of the first conical surface 3221. Since the central axis of the first conical surface 3221 is disposed along the roll gap direction, it cooperates with the first elastic member 700 and the second elastic member 800 to further assist the first contact assembly 310 in maintaining a centered upright position.

[0089] Likewise, the second rack 522 has a second conical surface 5221 , the central axis of which is arranged along the roller gap direction. The housing 100 has a second guide post 140 movably arranged in the second conical surface 5221 .

[0090] See also Figure 4In some embodiments, the roll gap measuring device 10 further includes a telescopic member 600 mounted on the housing 100 , and a telescopic end of the telescopic member 600 is connected to the first rack 322 .

[0091] It is worth noting that, considering the centering process after the dummy bar is hoisted onto the trolley, to ensure safety, the roll gap measuring device 10 in the embodiment of the present application also includes a telescopic member 600. Since the roll gap measuring device 10 is mounted on the dummy bar, when the first contact assembly 310 is close to the trolley, there is a risk of centering damage to the first contact assembly 310 after the dummy bar is hoisted. Therefore, the telescopic end of the telescopic member 600 is connected to the first rack 322. When the dummy bar is hoisted, the telescopic member 600 extends to drive the first rack 322 to move, so that the gear drives the first contact assembly 310 to swing until the first contact assembly 310 is no higher than the upper surface of the housing 100, that is, the first contact assembly 310 is not exposed on the upper surface of the housing 100 to avoid the risk of damage. Of course, if the second contact assembly 510 is close to the trolley, the telescopic end of the telescopic member 600 is connected to the second rack 522, and only one telescopic member 600 is required. Since the ends of the first rack 322 / the second rack 522 are both connected to elastic members, the telescopic end of the telescopic member 600 can be connected to the first rack 322 / the second rack 522 through the elastic member.

[0092] Furthermore, since one side of the first rack 322 is connected to the first measuring device 200, in order to avoid interference between the first measuring device 200 and the telescopic member 600, the telescopic member 600 can be disposed on the side of the first rack 322 away from the first measuring device 200. Specifically, the telescopic member 600 can be a push rod.

[0093] Next, the control method of the telescopic member 600 is described:

[0094] The telescopic member 600 has two states: extended position and retracted position. The controller is connected to the telescopic member 600 signal. Under normal circumstances, the telescopic member 600 is in the retracted position so as not to affect the roll gap measurement. When the ingot rod is lifted, the controller controls the telescopic member 600 to switch to the extended position to drive the rack to move until the top of the first contact component 310 is not higher than the upper surface of the shell 100 to avoid damage to the first contact component 310. When the controller receives the centering end signal, the controller controls the telescopic member 600 to switch to the retracted position.

[0095] 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 contact wheel 312 is disposed at an end of the first swing arm 311 away from the first transmission assembly 320 for contacting the first casting roll 20.

[0096] The first swing arm 311 is fixedly connected to the first fixing portion 3212. Specifically, the first fixing portion 3212 and the first swing arm 311 can be embedded to improve the fixing effect. The first contact wheel 312 is rotatably disposed at the end of the first swing arm 311 away from the first transmission assembly 320 and is configured to contact the first casting roll 20. The first contact wheel 312 can be made of a wear-resistant material or a wear-resistant coating.

[0097] 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 contact wheel 512 is arranged at one end of the second swing arm 511 away from the second transmission assembly 520 for contacting the second casting roll 30.

[0098] Based on the same inventive concept, please refer to Figure 2 , the embodiment of the present application further provides a roll gap measurement method, which is implemented based on the roll gap measurement device 10 described above, wherein the second movable mechanism 500 includes a second contact component 510 and a second transmission component 520 connected to each other, the second transmission component 520 includes a second gear member 521 and a second rack 522, the second gear member 521 is assembled on the first gear member 321 and movably penetrates the mounting hole, the second rack 522 is movably mounted in the housing 100, the second contact component 510 is disposed outside the housing 100, the second gear member 521 is fixedly connected to the second contact component 510 and is in transmission connection with the second rack 522, and the second measuring device 400 is connected to the second rack 522;

[0099] Roll gap measurement methods include:

[0100] S100 : Acquire a first measurement value S1 of the first measuring device 200 and a second measurement value S2 of the second measuring device 400 .

[0101] When the first contact assembly 310 moves relative to the first casting roll 20, it drives the first rack 322 to move. When the second contact assembly 510 moves relative to the second casting roll 30, it drives the second rack 522 to move. The first measurement value S1 is the movement distance of the first rack 322, and the second measurement value S2 is the movement distance of the second rack 522.

[0102] Of course, the first measurement value S1 must be smaller than the measuring range of the first measuring instrument 200 , and the second measurement value S2 must be smaller than the measuring range of the second measuring instrument 400 .

[0103] S200 : Calculating a first depression angle θ1 of the first movable mechanism 300 and a second depression angle θ2 of the second movable mechanism 500 according to the first measurement value S1 and the second measurement value S2 .

[0104] Since the cross-sections of the first casting roll 20 and the second casting roll 30 are circular, the first movable mechanism 300 rotates when it moves relative to the first casting roll 20, and the second movable mechanism 500 rotates when it moves relative to the second casting roll 30. The first depression angle θ1 of the first movable mechanism 300 is the rotation angle of the first contact assembly 310 relative to the first casting roll 20, and the second depression angle θ2 of the second movable mechanism 500 is the rotation angle of the second contact assembly 510 relative to the second casting roll 30.

[0105] According to common sense, the moving distance of the rack is the arc length on the gear circularity. In the embodiment of the present application, the circularity diameter d1 of the first gear member 321 and the circularity diameter d2 of the second gear member 521 are known. When the first measurement value S1 and the second measurement value S2 are obtained, the first depression angle θ1 and the second depression angle θ2 can be calculated according to the formula S1 = πd1 / 360×θ1, S2 = πd2 / 360×θ2.

[0106] Of course, the first depression angle θ1 needs to be smaller than the maximum depression angle of the first contact element 310 , and the second depression angle θ2 needs to be smaller than the maximum depression angle of the second contact element 510 .

[0107] S300 : Calculating a first depression amount H1 of the first movable mechanism 300 and a second depression amount H2 of the second movable mechanism 500 according to the first depression angle θ1 and the second depression angle θ2 .

[0108] Since the first depression angle θ1, the second depression 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 depression amount H1 and the second depression amount H2 can be calculated respectively according to the formulas H1=L1-L1×cosθ1 and H2=L2-L2×cosθ2.

[0109] S400: Calculate the roller gap G according to formula 1), which is:

[0110] G=L1-H1+L2-H2

[0111] 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, according to the steps, the roller gap G can be calculated using the first measurement value S1 and the second measurement value S2.

[0112] It can be 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, and the length of the first swing arm 311 and the radius of the first contact wheel 312 are both known quantities. Similarly, the length of the second contact component 510 can be calculated based on the length of the second swing arm and the radius of the second contact wheel 512, and the length of the second swing arm and the radius of the second contact wheel 512 are both known quantities, which will not be repeated here.

[0113] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional 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.

[0114] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A roll gap measuring device for measuring the roll gap between a first casting roll and a second casting roll arranged in pairs in a continuous casting machine, characterized in that: include: A housing, wherein an outer wall of the housing has a mounting hole; a first measuring device and a first movable mechanism connected thereto, wherein the first measuring device is disposed within the housing, and a portion of the first movable mechanism is disposed through the mounting hole so as to contact the first casting roll; when the first movable mechanism moves relative to the first casting roll and contacts the first casting roll, the first measuring device is capable of detecting a first movement amount of the first movable mechanism; a second measuring device and a second movable mechanism connected thereto, the second measuring device being disposed within the housing, and a portion of the second movable mechanism being assembled with the first movable mechanism and passing through the mounting hole so as to contact the second casting roll; the second measuring device being capable of detecting a second movement amount of the second movable mechanism when the second movable mechanism moves relative to and contacts the second casting roll; A controller is provided, wherein the controller is capable of calculating a roll gap between the first casting roll and the second casting roll according to the first movement amount and the second movement amount.

2. The roll gap measuring device according to claim 1, characterized in that: The first movable mechanism includes a first contact component and a first transmission component that are connected to each other. Part of the first transmission component is passed through the mounting hole, and part of the second movable mechanism is assembled on the first transmission component. The first contact component is arranged outside the shell, and the first measuring device is connected to the first transmission component to detect the first movement amount of the first transmission component.

3. The roll gap measuring device according to claim 2, characterized in that: The first transmission assembly includes a first gear member and a first rack. The first gear member is movably inserted into the mounting hole. The first gear member is sleeved on a portion of the second movable mechanism. The first rack is movably installed in the housing. The first gear member is fixedly connected to the first contact assembly and is transmission-connected to the first rack. The first measuring device is connected to the first rack.

4. The roll gap measuring device according to claim 3, characterized in that: The first gear member includes a first gear portion and a first fixed portion. The first gear portion is transmission-connected to the first rack, and the first fixed portion is fixedly connected to the first contact assembly.

5. The roll gap measuring device according to claim 3, characterized in that: The housing has a limiting cavity communicated with the mounting hole and a first guide cavity communicated with the limiting cavity. The first gear is installed in the limiting cavity, and the first rack is installed in the first guide cavity.

6. The roll gap measuring device according to claim 3, characterized in that: The roll gap measuring device also includes a first elastic member and a second elastic member installed on the housing. The first elastic member and the second elastic member are respectively connected to both sides of the first rack. The first elastic member and the second elastic member extend and retract along the moving direction of the first rack.

7. The roll gap measuring device according to claim 3, characterized in that: The first rack has a first conical surface, the central axis of which is arranged along the roller gap direction, and the housing has a first guide column, which is movably arranged in the first conical surface.

8. The roll gap measuring device according to claim 3, characterized in that: The roll gap measuring device further includes a telescopic member installed on the housing, and a telescopic end of the telescopic member is connected to the first rack.

9. The roll gap measuring device according to claim 1, characterized in that: The second movable mechanism includes a connected second contact component and a second transmission component, a portion of the second transmission component is assembled on the first movable mechanism and passed through the mounting hole, the second contact component is arranged outside the shell, and the second measuring device is connected to the second transmission component to detect the second movement amount of the second transmission component.

10. A roll gap measurement method, characterized in that: The roll gap measurement method is implemented based on the roll gap measurement device according to any one of claims 3 to 9, wherein the second movable mechanism includes a second contact assembly and a second transmission assembly connected to each other, the second transmission assembly includes a second gear member and a second rack, the second gear member is assembled to the first gear member and movably penetrates the mounting hole, the second rack is movably mounted in the housing, the second contact assembly is disposed outside the housing, the second gear member is fixedly connected to the second contact assembly and is in transmission connection with the second rack, and the second measuring device is connected to the second rack; The roll gap measurement method comprises: Acquire a first measurement value S1 of the first measuring instrument and a second measurement value S2 of the second measuring instrument; Calculate a first depression angle θ1 of the first movable mechanism and a second depression angle θ2 of the second movable mechanism according to the first measurement value S1 and the second measurement value S2 respectively; Calculating a first pressing amount H1 of the first movable mechanism and a second pressing amount H2 of the second movable mechanism according to 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.

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