Methods, devices, equipment and media for preventing steel pile-up in coilers

Abstract

This invention discloses a method, apparatus, equipment, and medium for preventing steel pile-up in a coiler, belonging to the field of metallurgical industry technology. The method includes: obtaining the position of the lower pinch roll, and a first lateral movement speed of a hydraulic cylinder on the drive side and a second lateral movement speed of a hydraulic cylinder on the operating side of the lower pinch roll, wherein the hydraulic cylinders drive the lower pinch roll to move laterally; determining the lateral movement state of the lower pinch roll based on the position, the first lateral movement speed, and the second lateral movement speed, wherein the lateral movement state includes a stable lateral movement state and an unstable lateral movement state; when the lower pinch roll is in the unstable lateral movement state, adjusting the first lateral movement speed or the second lateral movement speed until the lower pinch roll is in the stable lateral movement state, so that the strip can be threaded normally. This method can improve the stability of the lower pinch roll lateral movement process, reduce the occurrence of strip failure to be threaded normally, and thus reduce steel pile-up accidents.

Description

Technical Field

[0001] This invention relates to the field of metallurgical industry technology, and in particular to a method, apparatus, equipment and medium for preventing steel pile-up in a coiler. Background Technology

[0002] Hot-rolled strip endless rolling technology is a revolution in steel production technology. It has achieved remarkable results in improving strip yield, dimensional accuracy, the proportion of thin and ultra-thin specifications, and partially replacing cold rolling with hot rolling. The rolling production line used is a continuous casting and rolling production line. In semi-endless or endless rolling, the lower pinch rolls continuously move laterally in the strip inlet and outlet directions, and the lower pinch inlet flaps continuously rise and fall, enabling the strip to be switched to different coilers for coiling.

[0003] During the strip threading process, if the strip cannot enter the coiler in time, it will directly lead to strip piling up, causing the entire production line to stop pressing and the casting machine to stop pouring. Therefore, how to reduce the occurrence of strip piling accidents caused by failure to thread the strip properly when switching coilers is an urgent technical problem to be solved. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a method, apparatus, equipment and medium for preventing steel stacking in a coiler to overcome or at least partially solve the above problems. The lateral movement state of the lower pinch roll can be determined by acquiring the position of the lower pinch roll and the moving speed of the hydraulic cylinders on the drive side and the operating side of the lower pinch roll. When the lower pinch roll is in an unstable lateral movement state, the moving speed of the hydraulic cylinders on the drive side or the operating side of the lower pinch roll is adjusted to bring the lower pinch roll into a stable lateral movement state, thereby allowing the strip steel to be threaded normally and preventing steel stacking accidents.

[0005] In a first aspect, the present invention provides a method for preventing steel buildup in a coiler, the method comprising:

[0006] The position of the lower pinch roll, the first lateral movement speed, and the second lateral movement speed are obtained. The first lateral movement speed and the second lateral movement speed are the moving speeds of the hydraulic cylinders on the drive side and the operation side of the lower pinch roll, respectively. The hydraulic cylinders are used to drive the lower pinch roll to move laterally.

[0007] Based on the position, the first lateral movement speed, and the second lateral movement speed, the lateral movement state of the lower pinch roller is determined, and the lateral movement state includes a stable lateral movement state and an unstable lateral movement state.

[0008] When the lower pinch roll is in the unstable transverse movement state, adjust the first transverse movement speed or the second transverse movement speed until the lower pinch roll is in the stable transverse movement state so that the strip can be threaded normally.

[0009] Optionally, determining the lateral movement state of the lower pinch roller based on the position, the first lateral movement speed, and the second lateral movement speed includes:

[0010] When the position is between the starting position and the ending position in the transverse path, the speed difference between the first transverse speed and the second transverse speed is determined, and the transverse path is the path along which the lower pinch roll moves transversely between the strip inlet and outlet.

[0011] The lateral movement state of the lower pinch roller is determined based on the speed difference.

[0012] Optionally, determining the lateral movement state of the lower pinch roller based on the speed difference includes:

[0013] When the speed difference is equal to 0, the lower pinch roller is in the stable lateral movement state;

[0014] When the speed difference is not equal to 0, the lower pinch roller is in the unstable lateral movement state.

[0015] Optionally, adjusting the first lateral speed or the second lateral speed until the lower pinch roller is in the stable lateral movement state when the lower pinch roller is in the unstable lateral movement state includes:

[0016] When the lower pinch roller is in the unstable lateral movement state, the slower of the first lateral movement speed and the second lateral movement speed is determined as the third lateral movement speed;

[0017] Gradually increase the third lateral speed until the lower pinch roller is in the stable lateral state.

[0018] Optionally, gradually increasing the third lateral speed includes:

[0019] When the speed difference is greater than the difference threshold, the third lateral speed is gradually increased by the first speed change amount;

[0020] When the speed difference is greater than the second speed change and less than or equal to the difference threshold, the third lateral speed is gradually increased by the second speed change.

[0021] When the speed difference is less than the second speed change and greater than 0, the third lateral speed is increased by using the speed difference as the third speed change, so that the speed difference is reduced to 0;

[0022] Wherein, the first speed change is less than the difference threshold and greater than the second speed change, and the second speed change is greater than 0.

[0023] Optionally, before obtaining the position of the lower pinch roller, the first lateral speed, and the second lateral speed, the method further includes:

[0024] Obtain the operating modes of the continuous casting and rolling production line, wherein the operating modes include at least single-block operating mode, semi-headless operating mode and headless operating mode;

[0025] When the operating mode is the semi-headless operating mode or the headless operating mode, the position of the lower pinch roller, the first lateral speed, and the second lateral speed are obtained.

[0026] Optionally, the method further includes:

[0027] When the position is at the starting position or the ending position, the hydraulic cylinder is controlled to stop working.

[0028] In a second aspect, the present invention provides a device for preventing steel pile-up in a coiler, the device comprising:

[0029] The acquisition module is used to acquire the position of the lower pinch roller, the first lateral movement speed and the second lateral movement speed, wherein the first lateral movement speed and the second lateral movement speed are the moving speeds of the hydraulic cylinders on the drive side and the operation side of the lower pinch roller, respectively, and the hydraulic cylinders are used to drive the lower pinch roller to move laterally.

[0030] The determining module is used to determine the lateral movement state of the lower pinch roller based on the position, the first lateral movement speed, and the second lateral movement speed, wherein the lateral movement state includes a stable lateral movement state and an unstable lateral movement state.

[0031] The adjustment module is used to adjust the first lateral movement speed or the second lateral movement speed when the lower pinch roll is in the unstable lateral movement state, until the lower pinch roll is in the stable lateral movement state, so that the strip can be threaded normally.

[0032] Optionally, the determination module includes:

[0033] The speed difference determination unit is used to determine the speed difference between the first lateral speed and the second lateral speed when the position is between the starting position and the ending position in the lateral movement path, wherein the lateral movement path is the path along which the lower pinch roll moves laterally between the strip inlet and outlet.

[0034] The lateral movement state determination unit is used to determine the lateral movement state of the lower pinch roller based on the speed difference.

[0035] Optionally, the lateral movement state determination unit is also used for:

[0036] When the speed difference is equal to 0, the lower pinch roller is in the stable lateral movement state;

[0037] When the speed difference is not equal to 0, the lower pinch roller is in the unstable lateral movement state.

[0038] Optionally, the adjustment module includes:

[0039] The third lateral movement speed determination unit is used to determine the slower of the first lateral movement speed and the second lateral movement speed as the third lateral movement speed when the lower pinch roller is in the unstable lateral movement state.

[0040] The third transverse speed increasing unit is used to gradually increase the third transverse speed until the lower pinch roller is in the stable transverse state.

[0041] Optionally, the third lateral speed increase unit is also used for:

[0042] When the speed difference is greater than the difference threshold, the third lateral speed is gradually increased by the first speed change amount;

[0043] When the speed difference is greater than the second speed change and less than or equal to the difference threshold, the third lateral speed is gradually increased by the second speed change.

[0044] When the speed difference is less than the second speed change and greater than 0, the third lateral speed is increased by using the speed difference as the third speed change, so that the speed difference is reduced to 0;

[0045] Wherein, the first speed change is less than the difference threshold and greater than the second speed change, and the second speed change is greater than 0.

[0046] Optionally, the device further includes:

[0047] The operation mode acquisition module is used to acquire the operation mode of the continuous casting and rolling production line. The operation mode includes at least a single block operation mode, a semi-headless operation mode, and a headless operation mode. When the operation mode is the semi-headless operation mode or the headless operation mode, the position of the lower pinch roll, the first lateral movement speed, and the second lateral movement speed are acquired.

[0048] Optionally, the device further includes:

[0049] The control module is used to control the hydraulic cylinder to stop working when the position is at the starting position or the ending position.

[0050] Thirdly, the present invention provides an electronic device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method as described in the first aspect.

[0051] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method as described in the first aspect.

[0052] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0053] This invention provides a method, apparatus, equipment, and medium for preventing steel pile-up in a coiler. It can acquire the position, first lateral movement speed, and second lateral movement speed of the lower pinch roll. The first and second lateral movement speeds are the movement speeds of the hydraulic cylinders on the drive side and operating side of the lower pinch roll, respectively. By measuring the movement speeds on both sides, the stability of the lower pinch roll's lateral movement can be determined. That is, based on the position, first lateral movement speed, and second lateral movement speed, the lateral movement state of the lower pinch roll can be determined. When the lower pinch roll is in an unstable lateral movement state, the movement speed of the hydraulic cylinders on the drive side or operating side of the lower pinch roll is adjusted to bring the lower pinch roll into a stable lateral movement state, thereby allowing the strip steel to be threaded normally and preventing steel pile-up accidents. This method can improve the stability of the lower pinch roll's lateral movement process, prevent the phenomenon of strip steel not being threaded normally due to the lower pinch roll not being in the correct lateral movement position, and thus reduce steel pile-up accidents.

[0054] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0055] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0056] Figure 1 This is a flowchart of a method for preventing steel pile-up in a coiler, provided by an embodiment of the present invention.

[0057] Figure 2 This is a structural block diagram of a device for preventing steel pile-up in a coiler, provided in an embodiment of the present invention. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0059] Figure 1 This is a flowchart of a method for preventing steel pile-up in a coiler according to an embodiment of the present invention, as shown below. Figure 1 As shown, the method includes:

[0060] Step S110: Obtain the position of the lower pinch roller, the first transverse speed, and the second transverse speed.

[0061] The first lateral movement speed and the second lateral movement speed are the moving speeds of the hydraulic cylinders on the drive side and the operating side of the lower pinch roll, respectively. These hydraulic cylinders drive the lower pinch roll to move laterally. The drive side is centered on the rolling centerline, and all transmission devices of the rolling mill, flying shear, and various cooling beds and steel drawing machines are located on one side of the rolling mill. This side is called the drive side. The opposite side, centered on the rolling centerline, is called the operating side, mainly for material handling and maintenance operations.

[0062] In this embodiment, hydraulic cylinders are connected to the drive side and the operating side of the lower pinch roll, respectively. The lower pinch roll is driven to move laterally between the strip inlet and outlet by controlling the extension and retraction of the piston rod of the hydraulic cylinder. Specifically, oil pressure is established in the hydraulic cylinder to push the piston rod to extend, that is, the pressure energy in the hydraulic cylinder is converted into mechanical energy to drive the piston rod. When the piston rods on both sides extend, they will push the corresponding hydraulic cylinders to move in the first direction, thereby driving the lower pinch roll to move laterally in the first direction. When the oil pressure in the hydraulic cylinder is reduced, the piston rod will retract, thereby pulling the hydraulic cylinder back in the opposite direction of the first direction (the second direction), and driving the lower pinch roll to move laterally in the second direction. During the lateral movement, foreign objects such as iron oxide scale may exist on the piston rod, which can easily cause the moving speed of the hydraulic cylinders on both sides of the lower pinch roll to be inconsistent. This can cause jamming during the lateral movement of the lower pinch roll, which in turn causes abnormal operation of the lower pinch inlet guide plate, making it impossible to thread the strip when switching to the coiler, and ultimately causing the coiler to experience a steel stacking failure.

[0063] Therefore, in this embodiment, it is necessary to obtain the position of the lower pinch roller during the lateral movement, as well as the moving speeds of the hydraulic cylinders on the drive side and the operating side of the lower pinch roller, namely the first lateral movement speed and the second lateral movement speed. The lateral movement speeds on both sides of the lower pinch roller can be determined by the moving speeds of the hydraulic cylinders on the drive side and the operating side of the lower pinch roller.

[0064] In this embodiment, the position of the lower pinch roller can be detected by a position sensor. Alternatively, the position of the hydraulic cylinder can be detected by installing a magnetic scale inside the hydraulic cylinder, and then the position of the lower pinch roller can be determined based on the position of the hydraulic cylinder.

[0065] Specifically, based on the values ​​on the magnetic scale on the drive side of the lower pinch roller, the first distance the hydraulic cylinder on the drive side of the lower pinch roller can be determined. The position of the hydraulic cylinder on the drive side of the lower pinch roller can be obtained based on the first distance. Similarly, based on the values ​​on the magnetic scale on the operating side of the lower pinch roller, the second distance the hydraulic cylinder on the operating side of the lower pinch roller can be determined. The position of the hydraulic cylinder on the operating side of the lower pinch roller can be obtained based on the second distance. The average distance between the first distance and the second distance is calculated, and this average distance is taken as the lateral movement distance of the lower pinch roller. The position of the lower pinch roller can be determined based on the lateral movement distance.

[0066] In this embodiment, the first lateral movement speed and the second lateral movement speed can be determined based on the first distance and the second distance, as well as the time taken for the hydraulic cylinder to move. For example, the first lateral movement speed is the ratio of the first distance to the time taken for the hydraulic cylinder to move, and the second lateral movement speed is the ratio of the second distance to the time taken for the hydraulic cylinder to move.

[0067] Optionally, before obtaining the position of the lower pinch roller, the first traverse speed, and the second traverse speed, the method further includes:

[0068] The operating modes of the continuous casting and rolling production line are obtained, including at least single-block operating mode, semi-headless operating mode and headless operating mode; when the operating mode is semi-headless operating mode or headless operating mode, the position of the lower pinch roll, the first transverse speed and the second transverse speed are obtained.

[0069] In this embodiment, when the operating mode is single-strip operation, the lower pinch roll does not perform lateral movement. In single-strip operation mode, the interval between continuously rolling two strips is relatively long, providing sufficient time for switching coilers. Therefore, lateral movement of the lower pinch roll is not necessary for rapid coiler switching. The lower pinch roll only performs lateral movement when the operating mode is semi-headless or headless.

[0070] For example, when the rolling mode information indication Mode from the rolling mode control system is 0, it indicates that the continuous casting and rolling production line is operating in single-block mode, meaning the production line selects single-block rolling. When Mode is 1, it indicates that the production line selects semi-endless rolling or endless rolling.

[0071] Step S120: Determine the lateral movement state of the lower pinch roller based on the position, the first lateral movement speed, and the second lateral movement speed.

[0072] The lateral movement states include stable lateral movement states and unstable lateral movement states.

[0073] In this embodiment, when the lower pinch roll is in a stable lateral movement state, it means that the lower pinch roll can move smoothly during its lateral movement, and the strip can be threaded normally; when the lower pinch roll is in an unstable lateral movement state, it means that the lower pinch roll cannot move smoothly during its lateral movement, and the strip may not be able to enter the coiler in time, thus leading to a steel stacking accident.

[0074] Optionally, step S120 includes:

[0075] Step 1: When the position is between the starting position and the ending position in the lateral movement path, determine the speed difference between the first lateral movement speed and the second lateral movement speed.

[0076] In this embodiment, the path of the lower pinch roll moving laterally between the strip inlet and outlet is taken as the lateral movement path. The position at which the lateral movement begins at the strip inlet is taken as the starting position of the lateral movement path. When the lower pinch roll moves laterally to the designated position at the outlet, the lateral movement will stop, and the designated position will be taken as the ending position of the lateral movement path.

[0077] The second step is to determine the lateral movement state of the lower pinch roller based on the speed difference.

[0078] In this embodiment, when the position of the lower pinch roller is between the starting position and the ending position in the lateral movement path, it indicates that the lower pinch roller is in the process of lateral movement. Based on the speed difference between the first lateral movement speed and the second lateral movement speed, it can be determined whether the hydraulic cylinder can smoothly drive the lower pinch roller to move laterally.

[0079] Optional, the second step includes:

[0080] When the speed difference is equal to 0, the lower pinch roll is judged to be in a stable lateral movement state; when the speed difference is not equal to 0, the lower pinch roll is judged to be in an unstable lateral movement state.

[0081] In this embodiment, when the speed difference is 0, it indicates that the lateral movement speeds of the drive side and the operating side of the lower pinch roller are consistent, meaning that the lower pinch roller does not experience jamming during lateral movement, and the hydraulic cylinder can smoothly drive the lower pinch roller to move laterally. When the speed difference is not 0, it indicates that the lateral movement speeds of the drive side and the operating side of the lower pinch roller are inconsistent, meaning that the lower pinch roller may experience jamming during lateral movement, and the hydraulic cylinder cannot smoothly drive the lower pinch roller to move laterally.

[0082] Optionally, the method further includes:

[0083] When the position is at the starting or ending position, the hydraulic cylinder stops working.

[0084] In this embodiment, when the lower pinch roller is at the starting or ending position, it indicates that the lower pinch roller has not yet started or has completed its lateral movement. At this time, it is necessary to control the hydraulic cylinder to stop working, and the proportional valve to lock and stop outputting, so that the hydraulic cylinder's moving speed is reduced to 0, avoiding damage to the hydraulic cylinder, piston rod, or lower pinch roller. Simultaneously, since the hydraulic cylinder has stopped working, it indicates that the hydraulic cylinder is in a stationary state, and the lower pinch roller is also in a stationary state. Both the first and second lateral movement speeds are 0, meaning that when the position is at the starting or ending position, it is not necessary to adjust the first or second lateral movement speed. The proportional valve controls the oil inlet and outlet flow in the hydraulic cylinder's piston and rod sides, thereby controlling the extension and retraction of the piston rod within the hydraulic cylinder, achieving the lateral movement of the lower pinch roller.

[0085] Step S130: When the lower pinch roll is in an unstable lateral movement state, adjust the first lateral movement speed or the second lateral movement speed until the lower pinch roll is in a stable lateral movement state so that the strip can be threaded normally.

[0086] Optionally, step S130 includes:

[0087] The first step is to determine the slower of the first and second transverse speeds when the pinch roller is in an unstable transverse state as the third transverse speed.

[0088] The second step is to gradually increase the third transverse speed until the lower pinch roller is in a stable transverse state.

[0089] In this embodiment, when the lower pinch roller is in an unstable lateral movement state, the movement speed of the slower hydraulic cylinder is adjusted so that the movement speeds of the two hydraulic cylinders are consistent, thereby allowing the lower pinch roller to be in a stable lateral movement state.

[0090] Optional, the second step includes:

[0091] When the speed difference is greater than the difference threshold, the third lateral speed is gradually increased by the first speed change amount; when the speed difference is greater than the second speed change amount and less than or equal to the difference threshold, the third lateral speed is gradually increased by the second speed change amount; when the speed difference is less than the second speed change amount and greater than 0, the third lateral speed is increased by the speed difference amount as the third speed change amount, so that the speed difference is reduced to 0.

[0092] In this embodiment, when the speed difference V is greater than the difference threshold V 阈 If the first lateral velocity V1 and the second lateral velocity V2 have a large speed deviation, then the third lateral velocity V3 can be gradually increased according to the set time interval by the first speed change ΔV1. ’ =V3 + ΔV1*n, where n represents the number of increments, V3 ’This represents the third lateral movement speed after the increase. The value of V3 is updated each time it is increased, i.e., using V3... ’ The value of V3 is updated, and the speed difference V is recalculated. If the recalculated speed difference V is still greater than the difference threshold V, the value is updated. 阈 If V1 increases by V3, then V3 continues to increase by ΔV1; when the recalculated velocity difference V decreases to V... 阈 When the change in velocity is greater than the second velocity change ΔV2, the third lateral velocity, V3, is gradually increased by ΔV2 at set intervals. ’ =V3 + ΔV2*n, until V = 0 after the increase, or 0 < V < ΔV2. When 0 < V < ΔV2, then V3 will be added as the speed increase, i.e., V3 ’ =V3+V, thus making the recalculated V=0 after the increase. The set time interval can be the scan cycle of the program executing the method in this application, or it can be set according to actual circumstances.

[0093] It should be noted that the first speed change is less than the difference threshold and greater than the second speed change, and the second speed change is greater than 0. When the speed deviation between the first and second lateral movement speeds is large, the third lateral movement speed is adjusted by a larger change in the first speed; when the speed deviation is small, the third lateral movement speed is adjusted by a smaller change in the second speed; when the speed difference is adjusted to be less than the second speed change, the smaller speed difference needs to be used as the change to increase the third lateral movement speed, to avoid increasing the third lateral movement speed too much and causing a negative deviation, that is, the originally slower lateral movement speed becomes the faster of the two lateral movement speeds, resulting in a continued deviation between them. Therefore, the above method not only makes the speed adjustment more precise, but also ensures that the lateral movement state of the lower pinch roller can gradually stabilize.

[0094] It should be noted that V 阈 ΔV1 and ΔV2 can be set according to the actual working conditions of the production site, and this application does not limit them.

[0095] For example, V can be 阈Let ΔV1 be 0.15 mm / s and ΔV2 be 0.1 mm / s. When the lateral speed on the operating side is 12.25 mm / s and the lateral speed on the drive side is 12.48 mm / s, the calculated speed difference is 0.23 mm / s. Since this speed difference is greater than 0.2 mm / s, the lateral speed on the operating side is increased by 0.15 mm / s. After this increase, the lateral speed on the operating side becomes 12.40 mm / s, and the speed difference decreases to 0.08 mm / s. At this point, the reduced speed difference is greater than 0 and less than 0.15 mm / s. Therefore, the lateral speed on the operating side is increased by another 0.08 mm / s, bringing it to 12.48 mm / s, which is consistent with the lateral speed on the drive side. This means the speed difference is reduced to 0, allowing the lower pinch roller to enter a stable lateral movement state.

[0096] For example, when the obtained lateral movement speed on the operating side is 12.58 mm / s and the lateral movement speed on the drive side is 12.43 mm / s, the calculated speed difference is 0.15 mm / s. Since this speed difference is less than 0.2 mm / s, the lateral movement speed on the drive side is increased by 0.1 mm / s. After this increase, the lateral movement speed on the drive side becomes 12.53 mm / s, and the speed difference decreases to 0.05 mm / s. Since this reduced speed difference is greater than 0 and less than 0.15 mm / s, the lateral movement speed on the drive side is increased by another 0.05 mm / s, resulting in a lateral movement speed of 12.58 mm / s, which matches the lateral movement speed on the operating side. This means the speed difference is reduced to 0, allowing the lower pinch roller to enter a stable lateral movement state.

[0097] For example, when the lateral movement speeds of the operating side and the transmission side are both 12.43 mm / s, the lateral movement speed deviation of the lower pinch roller is 0, so no adjustment is needed. Continue to control the lateral movement of the lower pinch roller until it reaches the desired position.

[0098] Based on the same inventive concept, embodiments of the present invention also provide a device for preventing steel pile-up in a coiler. Figure 2 This is a structural block diagram of a device for preventing steel pile-up in a coiler, provided in an embodiment of the present invention. Figure 2 As shown, the device 200 includes an acquisition module 210, a determination module 220, and an adjustment module 230.

[0099] The acquisition module 210 is used to acquire the position of the lower pinch roller, the first lateral movement speed and the second lateral movement speed. The first lateral movement speed and the second lateral movement speed are the moving speeds of the hydraulic cylinders on the drive side and the operation side of the lower pinch roller, respectively. The hydraulic cylinders are used to drive the lower pinch roller to move laterally.

[0100] The determining module 220 is used to determine the lateral movement state of the lower pinch roller based on the position, the first lateral movement speed, and the second lateral movement speed. The lateral movement state includes a stable lateral movement state and an unstable lateral movement state.

[0101] The adjustment module 230 is used to adjust the first or second transverse speed when the lower pinch roll is in an unstable transverse state, until the lower pinch roll is in a stable transverse state, so that the strip can be threaded normally.

[0102] Optionally, the determining module 220 includes:

[0103] The speed difference determination unit is used to determine the speed difference between the first lateral speed and the second lateral speed when the position is between the starting position and the ending position in the lateral movement path. The lateral movement path is the path of the lower pinch roll moving laterally between the strip inlet and outlet.

[0104] The lateral movement state determination unit is used to determine the lateral movement state of the lower pinch roller based on the speed difference.

[0105] Optionally, the lateral movement state determination unit is also used for:

[0106] When the speed difference is equal to 0, the lower pinch roller is in a stable lateral movement state;

[0107] When the speed difference is not equal to 0, the lower pinch roller is in an unstable lateral movement state.

[0108] Optionally, the adjustment module 230 includes:

[0109] The third transverse speed determination unit is used to determine the slower of the first and second transverse speeds as the third transverse speed when the pinch roller is in an unstable transverse state.

[0110] The third transverse speed increasing unit is used to gradually increase the third transverse speed until the lower pinch roller is in a stable transverse state.

[0111] Optionally, the third lateral speed increase unit is also used for:

[0112] When the speed difference is greater than the difference threshold, the third lateral speed is gradually increased by the first speed change.

[0113] When the speed difference is greater than the second speed change but less than or equal to the difference threshold, the third lateral speed is gradually increased by the second speed change.

[0114] When the speed difference is less than the second speed change and greater than 0, the third lateral speed is increased by using the speed difference as the third speed change, so that the speed difference is reduced to 0.

[0115] Among them, the change in the first velocity is less than the difference threshold and greater than the change in the second velocity, and the change in the second velocity is greater than 0.

[0116] Optionally, the device 200 also includes:

[0117] The operation mode acquisition module is used to acquire the operation mode of the continuous casting and rolling production line. The operation mode includes at least single block operation mode, semi-headless operation mode and headless operation mode. When the operation mode is semi-headless operation mode or headless operation mode, the position of the lower pinch roll, the first transverse speed and the second transverse speed are acquired.

[0118] Optionally, the device 200 also includes:

[0119] The control module is used to stop the hydraulic cylinder from working when the position is at the start or end position.

[0120] It is understood that the device provided in the above embodiments is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0121] This invention also provides an electronic device that may include a processor and a memory, wherein the processor and the memory may be interconnected via a bus or other means.

[0122] The processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0123] Memory may include mass storage for data or instructions. For example, and not limitingly, memory may include hard disk drives (HDDs), floppy disk drives, flash memory, optical disks, magneto-optical disks, magnetic tape, or Universal Serial Bus (USB) drives, or combinations of two or more of these. Where appropriate, memory may include removable or non-removable (or fixed) media. Where appropriate, memory may be internal or external to an electronic device. In a particular embodiment, memory may be non-volatile solid-state memory.

[0124] In one instance, the memory may be read-only memory (ROM). In one instance, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0125] The processor implements any of the methods for preventing steel pile-up in the coiler described above by reading and executing computer program instructions stored in the memory.

[0126] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus to communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. Where appropriate, the bus may include one or more buses.

[0127] Furthermore, in conjunction with the methods for preventing steel pile-up in the coiler described in the above embodiments, this invention can be implemented using a computer-readable storage medium. This computer-readable storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the methods for preventing steel pile-up in the coiler described in the above embodiments.

[0128] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0129] This invention provides a method, apparatus, equipment, and medium for preventing steel pile-up in a coiler. It can acquire the position, first lateral movement speed, and second lateral movement speed of the lower pinch roll. The first and second lateral movement speeds are the movement speeds of the hydraulic cylinders on the drive side and operating side of the lower pinch roll, respectively. By measuring the movement speeds on both sides, the stability of the lower pinch roll's lateral movement can be determined. That is, based on the position, first lateral movement speed, and second lateral movement speed, the lateral movement state of the lower pinch roll can be determined. When the lower pinch roll is in an unstable lateral movement state, the movement speed of the hydraulic cylinders on the drive side or operating side of the lower pinch roll is adjusted to bring the lower pinch roll into a stable lateral movement state, thereby allowing the strip steel to be threaded normally and preventing steel pile-up accidents. This method can improve the stability of the lower pinch roll's lateral movement process, preventing the phenomenon of strip steel not being threaded normally due to the lower pinch roll not being in the correct lateral movement position, thus avoiding steel pile-up accidents.

[0130] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0131] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0132] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A method for preventing steel pile-up in a coiler, characterized in that, The method includes: The position of the lower pinch roll, the first lateral movement speed, and the second lateral movement speed are obtained. The first lateral movement speed and the second lateral movement speed are the moving speeds of the hydraulic cylinders on the drive side and the operation side of the lower pinch roll, respectively. The hydraulic cylinders are used to drive the lower pinch roll to move laterally. The lateral movement state of the lower pinch roller is determined based on the position of the lower pinch roller, the first lateral movement speed, and the second lateral movement speed. The lateral movement state includes a stable lateral movement state and an unstable lateral movement state. When the lower pinch roll is in the unstable transverse movement state, adjust the first transverse movement speed or the second transverse movement speed until the lower pinch roll is in the stable transverse movement state so that the strip can be threaded normally. Determining the lateral movement state of the lower pinch roller based on its position, the first lateral movement speed, and the second lateral movement speed includes: When the position of the lower pinch roll is between the starting position and the ending position in the transverse path, the speed difference between the first transverse speed and the second transverse speed is determined, and the transverse path is the path along which the lower pinch roll moves transversely between the strip inlet and the outlet. The lateral movement state of the lower pinch roller is determined based on the speed difference. Determining the lateral movement state of the lower pinch roller based on the speed difference includes: When the speed difference is equal to 0, the lower pinch roller is in the stable lateral movement state; When the speed difference is not equal to 0, the lower pinch roller is in the unstable lateral movement state; When the lower pinch roller is in the unstable lateral movement state, adjust the first lateral movement speed or the second lateral movement speed until the lower pinch roller is in the stable lateral movement state, including: When the lower pinch roller is in the unstable lateral movement state, the slower of the first lateral movement speed and the second lateral movement speed is determined as the third lateral movement speed; Gradually increase the third transverse speed until the lower pinch roller is in the stable transverse state; Gradually increasing the third lateral velocity includes: When the speed difference is greater than the difference threshold, the third lateral speed is gradually increased by the first speed change amount; When the speed difference is greater than the second speed change and less than or equal to the difference threshold, the third lateral speed is gradually increased by the second speed change. When the speed difference is less than the second speed change and greater than 0, the third lateral speed is increased by using the speed difference as the third speed change, so that the speed difference is reduced to 0; Wherein, the first speed change is less than the difference threshold and greater than the second speed change, and the second speed change is greater than 0.

2. The method according to claim 1, characterized in that, Before obtaining the position of the lower pinch roller, the first lateral speed, and the second lateral speed, the method further includes: Obtain the operating modes of the continuous casting and rolling production line, wherein the operating modes include at least single-block operating mode, semi-headless operating mode and headless operating mode; When the operating mode is the semi-headless operating mode or the headless operating mode, the position of the lower pinch roller, the first lateral speed, and the second lateral speed are obtained.

3. The method according to claim 1, characterized in that, The method further includes: When the lower pinch roller is at the starting position or the ending position, the hydraulic cylinder is controlled to stop working.

4. A device for preventing steel pile-up in a coiler, characterized in that, The device includes: The acquisition module is used to acquire the position of the lower pinch roller, the first lateral movement speed and the second lateral movement speed, wherein the first lateral movement speed and the second lateral movement speed are the moving speeds of the hydraulic cylinders on the drive side and the operation side of the lower pinch roller, respectively, and the hydraulic cylinders are used to drive the lower pinch roller to move laterally. The determining module is used to determine the lateral movement state of the lower pinch roller based on the position of the lower pinch roller, the first lateral movement speed and the second lateral movement speed, wherein the lateral movement state includes a stable lateral movement state and an unstable lateral movement state. The adjustment module is used to adjust the first lateral movement speed or the second lateral movement speed when the lower pinch roll is in the unstable lateral movement state, until the lower pinch roll is in the stable lateral movement state, so that the strip can be threaded normally. Determining the lateral movement state of the lower pinch roller based on its position, the first lateral movement speed, and the second lateral movement speed includes: When the position of the lower pinch roll is between the starting position and the ending position in the transverse path, the speed difference between the first transverse speed and the second transverse speed is determined, and the transverse path is the path along which the lower pinch roll moves transversely between the strip inlet and the outlet. The lateral movement state of the lower pinch roller is determined based on the speed difference. Determining the lateral movement state of the lower pinch roller based on the speed difference includes: When the speed difference is equal to 0, the lower pinch roller is in the stable lateral movement state; When the speed difference is not equal to 0, the lower pinch roller is in the unstable lateral movement state; When the lower pinch roller is in the unstable lateral movement state, adjust the first lateral movement speed or the second lateral movement speed until the lower pinch roller is in the stable lateral movement state, including: When the lower pinch roller is in the unstable lateral movement state, the slower of the first lateral movement speed and the second lateral movement speed is determined as the third lateral movement speed; Gradually increase the third transverse speed until the lower pinch roller is in the stable transverse state; Gradually increasing the third lateral velocity includes: When the speed difference is greater than the difference threshold, the third lateral speed is gradually increased by the first speed change amount; When the speed difference is greater than the second speed change and less than or equal to the difference threshold, the third lateral speed is gradually increased by the second speed change. When the speed difference is less than the second speed change and greater than 0, the third lateral speed is increased by using the speed difference as the third speed change, so that the speed difference is reduced to 0; Wherein, the first speed change is less than the difference threshold and greater than the second speed change, and the second speed change is greater than 0.

5. An electronic device, characterized in that, include: A memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, the processor executing the computer instructions to perform the method of any one of claims 1-3.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of any one of claims 1-3.

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