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 invention comprises a main body, a first measurer and a first movable mechanism which are connected, a second measurer and a second movable mechanism which are connected, and a controller. The main body is provided with an installation cavity, a first movable opening and a second movable opening, wherein the first movable opening and the second movable opening communicate with the installation cavity and are oppositely arranged along the symmetry axis of the first casting roller and the second casting roller. When 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 main body having a mounting cavity, a first movable opening and a second movable opening communicating with the mounting cavity, wherein the first movable opening and the second movable opening are arranged opposite to each other along a symmetric axis of the first casting roll and the second casting roll;

[0006] a first measuring device and a first movable mechanism connected thereto, wherein the first measuring device is disposed in the mounting cavity, and a portion of the first movable mechanism is disposed through the first movable opening 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 in the mounting cavity, and a portion of the second movable mechanism being disposed through the second movable opening 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 the second casting roll 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 first contact component and a first transmission component, the first transmission component is arranged in the installation cavity, the first contact component is connected to the first transmission component, the first contact component is passed through the first movable port, 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 roller gap measuring device includes a rotating shaft, the first transmission assembly includes a first gear member and a first rack, the rotating shaft and the first rack are installed on the inner wall of the installation cavity, the first gear member is movably assembled on the rotating shaft, the first gear member is fixedly connected to the first contact assembly and is transmission-connected to the first rack, and the first measurer is connected to the first rack.

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

[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 are connected to form a first fixed cavity, and the inner wall of the first fixed cavity is embedded in the outer circumference of the first fixed section.

[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, the first guide groove being 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 roller gap measuring device further includes a first elastic member, a second elastic member and a mounting member, the first elastic member and the second elastic member are respectively arranged on both sides of the first rack, the mounting member is fixedly installed in the mounting cavity and is arranged on the same side as the second elastic member, the first elastic member connects the first rack and the first measuring device, and the second elastic member connects the first rack and the mounting member.

[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 is inserted into the first movable opening. The first contact wheel is disposed at an 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 is fixedly connected to the second transmission component, the second contact component is passed through the second movable port, 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 described above, wherein the second movable mechanism includes a second contact assembly and a second transmission assembly, the second transmission assembly includes a second gear member and a second rack, the second rack is mounted on the inner wall of the mounting cavity, the second gear member is movably assembled on the rotating shaft, 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;

[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 cooperation between the roll gap measuring device and the first casting roll and the second casting roll is shown.

[0030] Figure 3 Shown Figure 1 sectional view of .

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

[0032] Figure 5 Shown Figure 3 A partial enlarged view of point A in the middle.

[0033] Figure 6 Shown Figure 5 Schematic diagram of the assembly of the first gear member, the second gear member and the rotating shaft.

[0034] Figure 7 Shown Figure 6 Schematic diagram of the structure of the first gear and the rotating shaft.

[0035] Figure 8 Shown Figure 6 Schematic diagram of the structure of the second gear member.

[0036] Figure 9 Shown Figure 4 Schematic diagram of the assembly of the first contact component and the second contact component.

[0037] Figure 10 Shown Figure 9 Assembly diagram from another perspective.

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

[0039] Description of the accompanying drawings:

[0040] 10-roll gap measuring device, 20-first casting roll, 30-second casting roll, 100-main body, 110-installation 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 member, 3211-first gear segment, 3212-first fixed segment, 3213-assembly segment, 322-first rack, 330-first guide member, 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 member, 5211-second gear segment, 5212-second fixed segment, 522-second rack, 530-second guide member, 600-rotating shaft, 700-first elastic member, 800-second elastic member, 810-first ejector pin, 900-third elastic member, 1000-fourth elastic member, 1100-second ejector pin, 1110-mounting member, 1200-mounting bracket, 1300-partition, 1400-controller, 1500-power supply. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Next, the embodiments of the present application will be described with reference to the accompanying drawings:

[0048] 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.

[0049] See also Figure 1-Figure 3 In the embodiment of the present application, the roll gap measuring device 10 includes a main body 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 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 symmetric axis of the first casting roll 20 and the second casting roll 30.

[0050] The first measuring device 200 is disposed within the mounting cavity 110. A portion of the first movable mechanism 300 extends through the first movable opening 111 for contacting 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 amount of movement of the first movable mechanism 300. A second measuring device 400 is disposed within the mounting cavity 110. A portion of the second movable mechanism 500 extends through the second movable opening 112 for contacting 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 amount of movement of the second movable mechanism 500.

[0051] The controller 1400 can calculate the roll gap between the first casting roll 20 and the second casting roll 30 according to the first movement amount and the second movement amount.

[0052] 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 to measure 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 roll gap measurement device 10 can be used similarly for vertical and arc segments.

[0053] 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 .

[0054] The main body 100 is the foundation of the roll gap measurement device 10, providing a mounting base for and protecting the other components of the roll gap measurement device 10. Furthermore, all other components are integrated into the main body 100, forming the roll gap measurement device 10 as a single unit, facilitating installation and transportation. The main body 100 includes a mounting cavity 110, a first movable port 111, and a second movable port 112 communicating with the mounting cavity 110. The first movable port 111 is located near the first casting roll 20, and the second movable port 112 is located near the second casting roll 30.

[0055] The first measuring device 200 is disposed in the installation 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 installation cavity 110, and part of the first movable mechanism 300 is disposed in the installation cavity 110, and part of the first movable mechanism 300 is disposed through the first movable opening 111, that is, part of the first movable mechanism 300 is located outside the installation cavity 110, so that the first movable mechanism 300 can touch the first casting roll 20.

[0056] 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.

[0057] Similarly, during its movement, the second movable mechanism 500 will first contact the upper right portion of the second casting roll 30. The movement of the second movable mechanism 500 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 and rotated to generate a second horizontal movement, which can be detected by the second measuring device 400.

[0058] 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 .

[0059] After the first measuring device 200 and the second measuring device 400 detect the first and second movement amounts, 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 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, and do not interfere 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 1500 for power supply, which is also located within the mounting cavity 110.

[0060] 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.

[0061] 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.

[0062] See also 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 is passed 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 assembly 310 is disposed through the first movable opening 111 for contacting the first casting roll 20. Since 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. Since 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.

[0064] Similarly, the second movable mechanism 500 includes a second contact component 510 and a second transmission component 520. The second transmission component 520 is arranged in the installation cavity 110. The second contact component 510 is connected to the second transmission component 520. The second contact component 510 is passed through the second movable port 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 assembly 510 is disposed through the second movable opening 112 for contacting the second casting roll 30. Since the second contact assembly 510 is connected to the second transmission assembly 520, as 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.

[0066] See also Figure 4-Figure 6 In some embodiments, the roller gap measuring device 10 includes a rotating shaft 600, the first transmission assembly 320 includes a first gear member 321 and a first rack 322, the rotating shaft 600 and the first rack 322 are installed on the inner wall of the installation cavity 110, the first gear member 321 is movably assembled on the rotating shaft 600, the first gear member 321 is fixedly connected to the first contact assembly 310 and is in transmission connection with the first rack 322, and 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 member 321 is movably assembled on the rotating shaft 600, that is, the first gear member 321 can rotate relative to the rotating shaft 600, and since the first gear member 321 is fixedly connected to the first contact component 310, the first contact component 310 can drive the first gear member 321 to rotate on the rotating shaft 600 when being pressed down, 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 amount of the first rack 322 can be measured.

[0068] Similarly, the second transmission assembly 520 includes a second gear member 521 and a second rack 522. The second rack 522 is installed on the inner wall of the installation cavity 110. The second gear member 521 is movably assembled on the rotating shaft 600. 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.

[0069] The second rack 522 is arranged in the horizontal direction. Of course, the second rack 522 is arranged opposite to the first rack 322. Since the second gear member 521 is movably assembled on the rotating shaft 600, that is, the second gear member 521 can rotate relative to the rotating shaft 600, and since the second gear member 521 is fixedly connected to the second contact component 510, the second contact component 510 can drive the second gear member 521 to rotate on the rotating shaft 600 during the process of being pressed down, 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.

[0070] Specifically, the first measurer 200 and the second measurer 400 may be displacement sensors.

[0071] See also Figure 6-Figure 8 In some embodiments, the first gear member 321 includes a first gear segment 3211 and a first fixed segment 3212 . The first gear segment 3211 is transmission-connected to the first rack 322 , and the first fixed segment 3212 is fixedly connected to the first contact assembly 310 .

[0072] Since the first gear member 321 needs to be connected to the first rack 322 for transmission and fixedly connected to the first contact assembly 310, the first gear member 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 connections between the first gear member 321 and the first rack 322 and the first contact assembly 310 do not interfere with each other and remain independent.

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

[0074] Since the first gear member 321 and the second gear member 521 are both assembled on the rotating shaft 600, 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.

[0075] Specifically, the first gear member 321 further includes an assembly section 3213 disposed between the first gear segment 3211 and the first fixed segment 3212. The second gear member 521 is assembled to the assembly section 3213, thereby achieving a coaxial arrangement of the first gear member 321 and the second gear member 521. The second gear segment 5211 and the second fixed segment 5212 can be disposed 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 offset, and the first fixed segment 3212 and the second fixed segment 5212 are offset. Accordingly, the first rack 322 and the second rack 522 are also offset, and the first contact assembly 310 and the second contact assembly 510 are also offset.

[0076] See also 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 fixed cavity 3113 , and the inner wall of the first fixed cavity 3113 is embedded in the outer peripheral surface of the first fixed section 3212 .

[0077] The inner wall of the first fixing cavity 3113 is embedded in the outer circumference of the first fixing section 3212, thereby fixing the first contact assembly 310 to the first fixing section 3212. Specifically, the inner wall of the first fixing cavity 3113 may be provided with a plurality of grooves, and the outer circumference of the first fixing section 3212 may be provided with a plurality of protrusions. The plurality of protrusions are embedded in the corresponding grooves, thereby achieving the inner wall of the first fixing cavity 3113 being embedded in the outer circumference of the first fixing section 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 the first contact assembly 310 needs to be disassembled, the bolts are 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 circumference of the second fixing section 5212 .

[0080] See also 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 arranged 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, and the first guide groove can provide guidance for the movement of the first rack 322, so that the movement of the first rack 322 is more stable, thereby improving the measurement effect of the first measuring device 200.

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

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

[0084] 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.

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

[0086] 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 extend and the other will contract. When the second contact assembly 510 passes the highest 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 return to its original position, thereby driving the second contact assembly 510 to return to its original position via the second gear member 521, so that the second contact assembly 510 remains in a centered upright position 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. 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, and the first elastic member 700 is sleeved on the first connecting rod. The other side of the first rack 322 is connected to the mounting member 1110 via a first ejector pin 810. The first connecting rod is fixedly connected to the first rack 322 and movably connected to the mounting member 1110, that is, the first ejector pin 810 can slide within the mounting member 1110, and the second elastic member 800 is sleeved on the first ejector pin 810. In this way, when the first rack 322 moves, the first connecting rod expands and contracts within the first measuring device 200, the first ejector pin 810 slides within the mounting member 1110, and the first and second elastic members 700 and 800 also expand and contract.

[0088] One side of the second rack 522 is connected to the second measuring device 400 via a second connecting rod. The second connecting rod is fixedly connected to the second rack 522 and movably connected to the second measuring device 400, that is, the second connecting rod can slide within the second measuring device 400, and the second elastic member 800 is sleeved on the second connecting rod. The other side of the second rack 522 is connected to the mounting member 1110 via a second ejector pin 1100. The second connecting rod is fixedly connected to the second rack 522 and movably connected to the mounting member 1110, that is, the second ejector pin 1100 can slide within the mounting member 1110, and the second elastic member 800 is sleeved on the second ejector pin 1100. In this way, when the second rack 522 moves, the second connecting rod expands and contracts within the second measuring device 400, the second ejector pin 1100 slides within the mounting member 1110, and the third elastic member 900 and the fourth elastic member 1000 also expand and contract.

[0089] The first elastic member 700 , the second elastic member 800 , the third elastic member 900 , and the fourth elastic member 1000 are all springs.

[0090] See also Figure 4In some embodiments, the roller 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 by screws. The relative positions of the first measuring device 200, the second measuring device 400 and the mounting bracket 1200 can be fine-tuned. Before use, each elastic member should be ensured to be 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 compressed, the two measuring devices can be tightened by tightening the screws on the mounting bracket 1200, 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.

[0091] See also 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 is inserted into the first movable opening 111. The first contact wheel 312 is disposed at one end of the first swing arm 311 away from the first transmission assembly 320 for contacting the first casting roll 20.

[0092] Specifically, the first swing arm 311 includes a first swing rod 3111 and a first pressure plate 3112, forming a first fixed cavity 3113 that is fixedly connected to the first transmission assembly 320. The first contact wheel 312 is rotatably disposed at an end of the first swing arm 311 away from the first transmission assembly 320 for contacting the first casting roll 20. The first contact wheel 312 can be made of a wear-resistant material or a 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 is inserted into the second movable opening 112. The second contact wheel 512 is arranged at the two ends of the second swing arm 511 away from the second transmission assembly 520 for contacting the second casting roll 30.

[0094] See also Figure 4In some embodiments, the roll gap measuring device 10 further includes a partition 1300 disposed within the installation cavity 110 to separate the installation cavity 110 into a first chamber and a second chamber. The first measuring device 200 and the second measuring device 400 are disposed through the partition 1300. The controller 1400 and the power supply 1500 are both disposed in the first chamber, while the first movable mechanism 300 and the second movable mechanism 500 are disposed in the second chamber. The first movable port 111 and the second movable port 112 are connected to the second chamber. Separating the controller 1400 and the power supply 1500 from the first movable mechanism 300 and the second movable mechanism 500 protects them. A cleaning structure can be provided within the second chamber to remove iron filings and oil stains that may have adhered to the swing arm or fallen from the casting machine during measurement, thereby preventing damage to the roll gap measuring device 10 and extending its service life.

[0095] See also Figure 2 Based on the same inventive concept, an embodiment of the present application also provides a roll gap measurement method, which is implemented based on the above roll gap measurement device 10, wherein the second movable mechanism 500 includes a second contact component 510 and a second transmission component 520, the second transmission component 520 includes a second gear member 521 and a second rack 522, the second rack 522 is installed on the inner wall of the installation cavity 110, the second gear member 521 is movably assembled on the rotating shaft 600, the second gear member 521 is fixedly connected to the second contact component 510 and is transmission-connected to the second rack 522, and the second measuring device 400 is connected to the second rack 522.

[0096] Roll gap measurement methods include:

[0097] 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 .

[0098] 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.

[0099] 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 .

[0100] 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 .

[0101] 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.

[0102] 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.

[0103] 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 .

[0104] 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 .

[0105] 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.

[0106] S400: Calculate the roller gap G according to formula 1), which 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, according to the above steps, the roller gap G can be calculated using the first measurement value S1 and the second measurement value S2.

[0109] 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 511 and the radius of the second contact wheel 512, and the length of the second swing arm 511 and the radius of the second contact wheel 512 are both known quantities, which will not be repeated here.

[0110] Also, see Figure 11 The roller gap measuring device 10 of the embodiment of the present application can obtain the curve equation of the first depression amount and the first measurement value (the same applies to the second depression amount and the second measurement value): y=ax2+bx+c. It is easy to see that the correlation of the curve is good, which is conducive to data fitting. After actual measurement, the measurement accuracy can reach more than 0.1mm.

[0111] 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.

[0112] 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 main body having a mounting cavity, a first movable opening and a second movable opening communicating with the mounting cavity, wherein the first movable opening and the second movable opening are arranged opposite to each other along a symmetric axis of the first casting roll and the second casting roll; a first measuring device and a first movable mechanism connected thereto, wherein the first measuring device is disposed in the mounting cavity, and a portion of the first movable mechanism is disposed through the first movable opening 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 in the mounting cavity, and a portion of the second movable mechanism being disposed through the second movable opening 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 the second casting roll 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. The first transmission component is arranged in the installation cavity. The first contact component is connected to the first transmission component. The first contact component is passed through the first movable port. 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 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 installation cavity, the first gear is movably assembled on the rotating shaft, the first gear 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.

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

5. The roll gap measuring device according to claim 4, 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 circumferential surface of the first fixed section.

6. The roll gap measuring device according to claim 3, characterized in that: The first movable mechanism further includes a first guide member arranged on the inner wall of the installation cavity, the first guide member has a first guide groove, the first guide groove is arranged along the movable direction of the first rack, and the first rack is movably installed in the first guide groove.

7. The roll gap measuring device according to claim 3, characterized in that: The roll gap measuring device also includes a first elastic member, a second elastic member and a mounting member. The first elastic member and the second elastic member are respectively arranged on both sides of the first rack. The mounting member is fixedly installed in the mounting cavity and is arranged on the same side as the second elastic member. The first elastic member connects the first rack and the first measuring device, and the second elastic member connects the first rack and the mounting member.

8. The roll gap measuring device according to claim 2, 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 is inserted into the first movable opening. The first contact wheel is arranged at an end of the first swing arm away from the first transmission assembly for contacting the first casting roll.

9. The roll gap measuring device according to claim 1, characterized in that: The second movable mechanism includes a second contact component and a second transmission component. The second contact component is fixedly connected to the second transmission component. The second contact component is inserted into the second movable port. 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, the second transmission assembly includes a second gear member and a second rack, the second rack is mounted on the inner wall of the mounting cavity, the second gear member is movably assembled on the rotating shaft, 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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