Control method of rolling mill side supporting device and rolling mill system

Abstract

The invention discloses a control method for side supporting devices of a rolling mill and a rolling mill system, the rolling mill comprises a working roller and a plurality of side supporting devices, and each side supporting device comprises a lining plate, a side supporting roller and a side supporting base. The method comprises the following steps: acquiring a measurement distance between a vertical surface of a side support base and a reference surface, wherein the reference surface is constructed through a connecting line between reference points on each lining plate; the measured distance is compared with a preset distance, if the difference value between the measured distance and the preset distance is larger than or equal to a preset difference value, the stretching-out distance of the side supporting roller is adjusted so that the difference value can be smaller than the preset difference value, and the stretching-out distance is the distance, relative to the mechanical zero position, of the side supporting roller; and the side supporting rollers are not crossed with the working rollers. The problem that the shape of a strip steel is affected by shaking or vibration in the operation process due to axial force generated by the working roll due to intersection between the side supporting roll and the working roll can be avoided.

Description

Technical Field

[0001] The present application belongs to the field of strip steel production equipment control technology, and in particular relates to a control method for a rolling mill side support device and a rolling mill system. Background Art

[0002] Multi-roll mills, characterized by their small work roll diameter, high mill rigidity, compact size, and light weight, have been continuously developed and improved in recent years. The 18-roll mill is a key model for producing cold-rolled continuous strip. The core technology of the 18-roll mill is the addition of four sets of work roll side supports to the traditional six-roll mill, ensuring the work rolls' resistance to horizontal deflection. The work roll side support base assembly (comprising the bearing housing, side support rolls, and backing bearing assembly, or side support rolls and backing roll assembly) and the side support adjustment mechanism are generally referred to as the work roll side support assembly.

[0003] In actual applications, the side support device of the 18-high rolling mill is often unstable, which causes problems such as shaking and vibration during the operation of the rolling mill, affecting the shape of the strip. Summary of the Invention

[0004] The embodiments of the present application provide a control method for a rolling mill side support device and a rolling mill system, which can, at least to a certain extent, avoid the intersection between the side support rollers and the working rollers, causing the working rollers to generate axial force, causing shaking or vibration during operation, and affecting the shape of the strip.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0006] According to a first aspect of an embodiment of the present application, a method for controlling a side support device of a rolling mill is provided, wherein the rolling mill comprises: a working roll and a plurality of side support devices, wherein the side support devices comprise a liner, a side support roll, and a side support base, wherein the side support roll and the side support base are provided on the liner, the side support base is connected to the side support roll, and the side support roll is configured to provide side support for the working roll, and the method comprises:

[0007] Obtaining a measured distance between a vertical surface of the side support base and a reference plane, wherein the reference plane is constructed by connecting reference points on each of the lining plates, and the reference plane and the lining plates are parallel to each other;

[0008] The measured distance is compared with a preset distance. If the difference between the measured distance and the preset distance is greater than or equal to the preset difference, the extended distance of the side support roller is adjusted so that the difference between the measured distance and the preset distance is less than the preset difference, wherein the extended distance is the distance of the side support roller relative to a mechanical zero position, and the mechanical zero position is a preset working position when the side support roller provides side support to the working roller. When the difference between the measured distance and the preset distance is less than the preset difference, there is no intersection between the side support roller and the working roller.

[0009] Optionally, the plurality of side support devices are relatively arranged on the inlet side and the outlet side of the rolling mill, and the reference surface is constructed in the following manner:

[0010] Obtaining reference points of the lining plates of each of the two oppositely arranged side support devices, and using the center of the two reference points as the reference point;

[0011] The reference plane is constructed according to the connecting lines of the reference points.

[0012] Optionally, the side support device further comprises: a hydraulic cylinder configured to provide a hydraulic driving force to the side support roller, and the method further comprises:

[0013] detecting the hydraulic driving force;

[0014] If the hydraulic driving force is not within the preset driving force range, an early warning of hydraulic driving abnormality is issued.

[0015] Optionally, the plurality of side support devices include a side support device on a driving side and a side support device on an operating side, and the detecting of the hydraulic driving force includes:

[0016] detecting the hydraulic driving force on the driving side and the hydraulic driving force on the operating side;

[0017] If the hydraulic driving force is not within the preset driving force range, issuing an early warning of hydraulic driving abnormality includes:

[0018] If the difference between the hydraulic driving force on the driving side and the hydraulic driving force on the operating side is greater than a warning difference, a warning of hydraulic driving abnormality is issued.

[0019] Optionally, the side support device further comprises: a hydraulic cylinder configured to provide a hydraulic driving force to the side support roller, the hydraulic cylinder being provided with a position sensor, and the method further comprises:

[0020] During the rolling process of the work rolls, the driving position of the hydraulic cylinder is detected;

[0021] If there is a deviation between the side support force of the side support roller on the working roll at the driving position and the side support force of the side support roller on the working roll at the preset position, the driving position of the hydraulic cylinder is compensated.

[0022] Optionally, before obtaining the measured distance between the vertical surface of the side support base and the reference plane, the method further includes:

[0023] Before the rolling mill passes the strip steel, the extension distance of the side support roller is set to a target distance so that the side support roller provides support to the working roller so that the working roller is maintained at a target position. When the working roller is at the target position, there is no interference between the working roller and the strip steel, wherein the value range of the target distance is 30 mm-55 mm.

[0024] A second aspect of an embodiment of the present application provides a rolling mill system, comprising:

[0025] a working roll and a plurality of side support devices, the side support devices including liner plates and side support rolls, the side support rolls being configured to provide side support to the working rolls;

[0026] A controller is connected to the side support device and is used to execute any method described in the first aspect.

[0027] Optionally, the side support device further comprises: a backing and a backing bearing, the multiple side support devices comprise multiple backing bearings, at least two of the backing bearings have different diameters, and each of the backing bearings is arranged along an extension direction from the inlet side to the outlet side of the rolling mill;

[0028] Among them, each backing bearing is arranged in descending order from the central area to the surrounding area in order of diameter from large to small, the central area is the central area between the inlet side and the outlet side, and the surrounding area is the area between the inlet side and the outlet side except the central area.

[0029] Optionally, the diameter of the backing bearing is in the range of 145 mm to 155 mm; and / or

[0030] The difference between the diameters of the two backing bearings is less than or equal to 0.01 mm.

[0031] Optionally, the roughness of the side support roller ranges from 0.5 μm to 0.6 μm.

[0032] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores at least one computer program instruction, and the at least one computer program instruction is loaded and executed by a processor to implement the operations performed by any method described in the first aspect.

[0033] A fourth aspect of an embodiment of the present application provides an electronic device, comprising one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by any of the methods described in the first aspect.

[0034] The one or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:

[0035] The present application provides a method for controlling a side support device of a rolling mill. The rolling mill includes: a working roll and multiple side support devices, wherein the side support devices include liners, side support rollers, and side support bases. The liners are provided with side support rollers and side support bases, the side support bases are connected to the side support rollers, and the side support rollers are configured to provide side support for the working rolls. The method includes: obtaining a measured distance between the liners and a reference plane, wherein the reference plane is constructed by connecting reference points on each liner, and the reference plane and the liners are parallel to each other; comparing the measured distance with a preset distance, and if the difference between the measured distance and the preset distance is greater than or equal to the preset difference, adjusting the extension distance of the side support rollers so that the difference between the measured distance and the preset distance is less than the preset difference, wherein the extension distance is the distance of the side support rollers relative to a mechanical zero position, and the mechanical zero position is the working position of the side support rollers when providing side support to the working rolls. When the difference between the measured distance and the preset distance is less than the preset difference, there is no intersection between the side support rollers and the working rolls. Therefore, the embodiment of the present application can avoid the intersection between the side support rollers and the working rollers, which causes the working rollers to generate axial force, causing shaking or vibration during operation, and affecting the strip shape.

[0036] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, explaining the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0038] Figure 1A schematic structural diagram of a rolling mill according to an embodiment of the present application is shown;

[0039] Figure 2 A flow chart showing a method for controlling a rolling mill side support device according to an embodiment of the present application is shown;

[0040] Figure 3 A schematic diagram of the structure of a computer system suitable for implementing an electronic device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0043] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. In other words, these functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different models and / or processor devices and / or microcontroller devices.

[0044] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0045] It should also be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that shown or described.

[0046] The 18-roller single stand mainly includes key equipment such as a stable and reliable side support system, an intermediate roll transmission system, an intermediate roll bending system, a quick roll changing system and a high-tension coiler, as well as key instruments such as a plate shape meter, a thickness gauge and a speed meter to ensure stable rolling of high-strength steel and high quality requirements.

[0047] Four side support systems can be installed between the operating and drive sides of the mill housing. Each side support system consists of two rows of backing bearings and a work roll, providing radial positioning for the work rolls. Each side support system is equipped with two hydraulic cylinders and two proportional valves. Each hydraulic cylinder is equipped with a linear sensor for position control, compensating for wear on the work rolls (work rolls, intermediate rolls, and backup rolls).

[0048] In actual applications of the 18-high rolling mill, the side support device control system is often unstable, which causes problems such as shaking and vibration during the operation of the rolling mill, affecting the normal operation of the 18-high rolling mill.

[0049] The unstable operation of the roller system has the following main hazards to the actual production process:

[0050] 1) Impact on the strip surface: The vertical vibration of the working roll will cause the contact pressure between the upper and lower working rolls to be unstable, thereby generating vibration marks on the strip surface, thus affecting the flatness of the strip surface.

[0051] 2) Affect the operation of the rolling mill, and serious accidents may occur. Excessive working roll runout may cause serious wear and damage to the rolling mill, and even more serious accidents may occur.

[0052] 3) Affecting the shape of the strip. When the working roll jumps in the horizontal direction, since the working roll and the intermediate roll are not on the same plumb line, this will lead to cross rolling, offset rolling, etc., thereby affecting the shape of the rolling mill and causing defects such as tilted waves and warping.

[0053] 4) When the side support fails, such as the side support roller box falls off, the pressure and position sensor signals are abnormal, or the side support roller is in direct contact with the working roller of the mill, its spatial position accuracy directly affects the radial force of the working roller. If the accuracy exceeds the tolerance, it will cause the roller system to have a cross angle, generate axial force, and cause damage to the thrust bearing.

[0054] In view of this, an embodiment of the present application provides a control method for a rolling mill side support device, which can, at least to a certain extent, avoid the intersection between the side support roller and the working roller, causing the working roller to generate axial force, resulting in damage to the thrust bearing, and affecting the strip shape.

[0055] The control method of the rolling mill side support device according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0056] Figure 1 A structural schematic diagram of a rolling mill according to an embodiment of the present application is shown.

[0057] like Figure 1 As shown, the rolling mill includes: work rolls 1 and multiple side support devices 2. The side support devices include liner plates (not shown), side support rolls 21, and side support bases 22. The side support rolls 21 and the side support bases 22 are mounted on the liner plates. The side support bases 22 are connected to the side support rolls 21. The side support rolls 21 are configured to provide side support for the work rolls 1. The work rolls 1 may include upper and lower work rolls. Each work roll 1 may be supported from the front and rear by two side support rolls 21, respectively. The side support roll devices 2 also include backing bearings 23 and hydraulic cylinders 24. The backing bearings 23 are connected to the side support rolls 21 via the side support bases 22. The side support bases 22 are connected to the hydraulic cylinders 24. The hydraulic cylinders 24 hydraulically drive the side support bases 22 to slide along the length of the hydraulic cylinders 24, thereby driving the backing bearings 23 and the side support rolls 21 to slide. When the side support rolls 21 slide to their working positions, they can provide side support for the work rolls 1 in the rolling state.

[0058] Figure 2 A flow chart showing a method for controlling a rolling mill side support device according to an embodiment of the present application is shown.

[0059] According to a first aspect of an embodiment of the present application, a method for controlling a rolling mill side support device is provided, the method including but not limited to:

[0060] Step S10. Obtaining a measured distance between the vertical surface of the side support base and a reference plane, wherein the reference plane is constructed by connecting the reference points on each of the lining plates, and the reference plane and the lining plates are parallel to each other;

[0061] In some embodiments, the plurality of side support devices are relatively arranged on the inlet side and the outlet side of the rolling mill, and the reference surface is constructed in the following manner:

[0062] Step S101. Obtain reference points of each of the two oppositely arranged liner plates of the side support device, and use the center of the two reference points as the reference point;

[0063] Step S102: Construct the reference plane according to the lines connecting the reference points.

[0064] For example: the entire frame of the rolling mill is installed on the ground, and four side support devices are provided on the inlet side of the rolling mill, so there are four liners, two of which are relatively arranged above the inlet side, and the other two liners are relatively arranged below the inlet side; in addition, four side support devices are provided on the outlet side of the rolling mill, so there are four liners, two of which are relatively arranged above the outlet side, and the other two liners are relatively arranged below the outlet side. Usually, each liner is set perpendicular to the ground, and a point is obtained from each two relatively set liners, for example, the center point of the liner is obtained, assuming it is point A and point B, and the center point C of the line connecting point AB is used as the reference point, and so on. For 8 liners, 4 reference points can be obtained, and the 4 reference points are connected to construct a reference plane. It can be understood that this reference plane is also perpendicular to the ground.

[0065] In step S10, obtaining the measured distance between the vertical surface of the side support base and the reference plane may be: using a laser tracker to obtain the measured distance between the lining plate and the reference plane.

[0066] It can be understood that, since the lining plate is perpendicular to the ground, the side support base is arranged on the lining plate, and the vertical surface of the side support base may refer to: the side of the side support base facing the reference plane.

[0067] Step S20. Compare the measured distance with the preset distance. If the difference between the measured distance and the preset distance is greater than or equal to the preset difference, adjust the extension distance of the side support roller so that the difference between the measured distance and the preset distance is less than the preset difference, wherein the extension distance is the distance of the side support roller relative to the mechanical zero position, and the mechanical zero position is the preset working position when the side support roller provides side support to the working roller. When the difference between the measured distance and the preset distance is less than the preset difference, there is no intersection between the side support roller and the working roller.

[0068] It is understood that since the side support rollers are used to provide side support for the work rolls, the accuracy of the spatial position of the side support rollers directly affects the radial force applied to the work rolls. Excessive accuracy can result in a cross angle between the roll system (work rolls and side support rollers), generating axial forces, which in turn can damage the thrust bearings and affect the strip shape. In view of this, based on the fact that the side support base can slide along the length of the hydraulic cylinder, thereby driving the backing bearing and the side support base to slide, the embodiment of the present application sets a reference plane as a reference plane. By measuring the distance between the vertical surface of the side support base and the reference plane, the measured distance is compared with a preset distance. If the difference between the two is greater than or equal to the preset difference, it indicates that there is a significant deviation between the position of the side support base and the preset position. When the position of the side support base deviates, it may cause the side support roller to extend too far, resulting in a cross between the side support roller and the work roll. Therefore, it is necessary to adjust the extension distance of the side support rollers to ensure that there is no cross between the side support rollers and the work rolls, thereby ensuring a normal strip shape during rolling.

[0069] In some embodiments, adjusting the extension distance of the side support roller includes: adjusting the extension distance of the side support roller within a preset distance adjustment range, wherein the distance adjustment range may be ±0.0001 mm.

[0070] In some embodiments, the side support device further comprises: a hydraulic cylinder configured to provide a hydraulic driving force to the side support roller, and the method further comprises:

[0071] Step S40: detecting the hydraulic driving force;

[0072] Step S50: If the hydraulic driving force is not within the preset driving force range, an early warning of hydraulic driving abnormality is issued.

[0073] It is understood that during roll gap closing or rolling preparation, if the rolling mill is operating normally, the hydraulic cylinder's hydraulic driving force should be within the preset driving force range. However, if the hydraulic driving force is excessive, for example, greater than 700 kN (kilonewtons), it indicates that the hydraulic cylinder is operating at high pressure, which may indicate a fault on one side of the work roll, such as a broken belt, or a damaged hydraulic cylinder seal. Furthermore, if the hydraulic driving force is too low, for example, less than 120 kN, it indicates that the side support rolls may not be supporting the work rolls. Therefore, when the hydraulic driving force is not within the preset driving force range, it is necessary to issue an abnormal warning, such as by displaying an abnormal warning in the user interface.

[0074] In some embodiments, the plurality of side support devices include a side support device on a driving side and a side support device on an operating side, and the detecting of the hydraulic driving force includes:

[0075] detecting the hydraulic driving force on the driving side and the hydraulic driving force on the operating side;

[0076] If the hydraulic driving force is not within the preset driving force range, issuing an early warning of hydraulic driving abnormality includes:

[0077] If the difference between the hydraulic driving force on the driving side and the hydraulic driving force on the operating side is greater than a warning difference, a warning of hydraulic driving abnormality is issued.

[0078] It can be understood that when the pressure deviation between the operating side and the driving side of the side support is greater than the warning difference, for example greater than 10 tons, it means that one side is under particularly large force and the other side is not under force, then there is an obvious abnormality, and a warning prompt can be given on the user screen to remind the operator to pay attention.

[0079] In some embodiments, the side support device further comprises: a hydraulic cylinder configured to provide a hydraulic driving force to the side support roller, the hydraulic cylinder being provided with a position sensor, and the method further comprises:

[0080] During the rolling process of the work rolls, the driving position of the hydraulic cylinder is detected;

[0081] If there is a deviation between the side support force of the side support roller on the working roll at the driving position and the side support force of the side support roller on the working roll at the preset position, the driving position of the hydraulic cylinder is compensated.

[0082] Exemplarily, the position sensor can be a magnetic scale, which detects the hydraulic cylinder's drive position based on the magnetic scale. The drive position refers to the position of the hydraulic cylinder's drive element when it is driving the side support roller. Theoretically, the gap between the side support roller and the work roll can be 0.1 mm. At this gap, the side support roller's lateral support force on the work roll can reach an ideal state. However, in actual operation, although the gap between the side support roller and the work roll is 0.1 mm, due to interference factors, the side support roller's lateral support force on the work roll may not reach the ideal state. Based on this, embodiments of the present application adjust the gap between the side support roller and the work roll by detecting the hydraulic cylinder's drive position, i.e., position compensation, thereby achieving the ideal side support force on the work roll. The position compensation range can be ±100 μm. Thus, position compensation can achieve more balanced support for the work roll, thereby reducing chatter marks on the strip surface and improving strip flatness.

[0083] In some embodiments, each hydraulic cylinder is provided with two sets of position detection systems, such as two sets of magnetic scales, so that if one of them is damaged, the value of the other can be used to operate, thereby preventing emergency shutdown operations.

[0084] In some embodiments, before obtaining the measured distance between the vertical surface of the side support base and the reference surface, the method further includes:

[0085] Before the rolling mill passes the strip, the extension distance of the side support roller is set to a target distance, so that the side support roller provides support to the working roller so that the working roller is maintained at a target position. When the working roller is at the target position, there is no interference between the working roller and the strip, wherein the value range of the target distance is 30mm-55mm, for example, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, etc.

[0086] It is understood that before strip threading, the work rolls are maintained in the target position to prevent the work rolls from interfering with the strip or the strip from scratching the side support rolls and the work roll surfaces. In this case, to maintain the work rolls in the target position, the side support rolls can be used to provide support for the work rolls, and in this case, the side support rolls need to be extended.

[0087] It is understandable that during use, as the working roll wears, the diameter of the working roll decreases. Therefore, in order to keep the working roll in the target position, the extension distance of the side support roll can be adaptively adjusted to prevent the working roll from falling off the small roll diameter.

[0088] In some embodiments, the method further comprises:

[0089] The hydraulic cylinder is subjected to a response test according to a preset period, for example, once a month.

[0090] For example, if the frequency response test shows that the hydraulic cylinder response frequency in the current state is compared with the hydraulic cylinder response frequency during the equipment debugging period, and the difference exceeds 20%, it means that the response performance of the hydraulic cylinder has been significantly reduced, and the hydraulic cylinder body needs to be checked.

[0091] In some embodiments, before the rolling mill is put into operation, the following steps may be performed to prepare for the operation:

[0092] 1) Roller changing preparation: Empty the roll changing car, use the overhead crane to lift the side support bracket into the roll changing car gripper, and connect the oil pipes of the bracket and gripper. Before connecting the oil pipes, turn off the hydraulic system of the roll changing car.

[0093] 2) Pull out the intermediate roll and working roll. Use the gripper to pull out the working roll and intermediate roll.

[0094] 3) Prepare the machine frame. Inch-move the four side supports to the forward position (mechanical zero position). The position feedback display will be 0mm.

[0095] 4) Open the side support vertical mechanism, lock it, and lift it to the uppermost position. Lift the bracket to hold the side support roller box. Select the side support roller box and lock it. Confirm that the support roller is in the UP position, otherwise the side support lifting will interfere with the position of the upper support roller. Inching the gripper and slowly retreat, unlock the roll changing car and return it to the roll removal position, and replace the new side support roller. Drive the roll changing car to the frontmost position and lock it. Disconnect the oil pipe before lifting the side support bracket, retract the middle roller flap, and retreat the car to the rear position.

[0096] Based on the above disclosure, a method for controlling a side support device of a rolling mill according to an embodiment of the present application is provided. The rolling mill includes work rolls and multiple side support devices, the side support devices including liner plates and side support rollers, the side support rollers being configured to provide side support for the work rolls. The method includes: obtaining a measured distance between the liner plates and a reference plane, wherein the reference plane is constructed by connecting reference points on each liner plate, and the reference plane and the liner plates are parallel to each other; comparing the measured distance with a preset distance; and if the difference between the measured distance and the preset distance is greater than or equal to the preset difference, adjusting the extension distance of the side support rollers so that the difference between the measured distance and the preset distance is less than the preset difference. The extension distance is the distance of the side support rollers relative to a mechanical zero position, which is the working position of the side support rollers when providing side support to the work rolls. When the difference between the measured distance and the preset distance is less than the preset difference, there is no crossover between the side support rollers and the work rolls. Thus, the embodiment of the present application can prevent crossover between the side support rollers and the work rolls, which could result in axial forces on the work rolls, damage to the thrust bearings, and poor strip shape.

[0097] A second aspect of an embodiment of the present application provides a rolling mill system, comprising:

[0098] a working roll and a plurality of side support devices, the side support devices including liner plates and side support rolls, the side support rolls being configured to provide side support to the working rolls;

[0099] A controller is connected to the side support device and is used to execute any method as described in the first aspect.

[0100] In some embodiments, the side support device further includes: a backing and a backing bearing, the multiple side support devices include multiple backing bearings, at least two of the backing bearings have different diameters, and each of the backing bearings is arranged along the extension direction from the inlet side to the outlet side of the rolling mill; wherein, each of the backing bearings is arranged in descending order from the central area to the surrounding area in order of diameter from large to small, the central area is the central area between the inlet side and the outlet side, and the surrounding area is the area between the inlet side and the outlet side except the central area.

[0101] For example: There are 19 backing bearings in total, the one with the largest diameter is placed in the middle, and the others are arranged in descending order on both sides, so as to ensure uniform side support force for the working roll.

[0102] In some embodiments, the diameter of the backing bearing ranges from 145 mm to 155 mm, such as 145 mm, 150 mm, 155 mm, etc.; and / or the difference between the diameters of the two backing bearings is less than or equal to 0.01 mm.

[0103] In some embodiments, the roughness of the side support roller ranges from 0.5 μm to 0.6 μm.

[0104] Understandably, poor side support installation accuracy and improper side support backing matching can cause gap problems between the rollers. Side support roller roughness that doesn't meet requirements leads to frequent side support replacements. This requires operators to enter the mill to confirm the side support position, which can pose a significant safety hazard if contact isn't in place. Therefore, the backing bearing diameter and side support roller roughness are set as described above.

[0105] A third aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores at least one computer program instruction, and the at least one computer program instruction is loaded and executed by a processor to implement the operations performed by any method described in the first aspect.

[0106] The computer-readable storage medium may be a portable compact disc read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the computer-readable storage medium of the present application is not limited thereto. In the present application, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0107] The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0108] The program code for performing the operations of the present application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0109] A fourth aspect of an embodiment of the present application provides an electronic device, comprising one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by any of the methods described in the first aspect.

[0110] like Figure 3 As shown, electronic device 400 is implemented as a general-purpose computing device. Components of electronic device 400 may include, but are not limited to, at least one processing unit 410, at least one storage unit 420, and a bus 430 connecting various system components (including storage unit 420 and processing unit 410).

[0111] The storage unit stores program code, which can be executed by the processing unit 410, so that the processing unit 410 executes the steps described in the above "Example Method" section of this specification according to various exemplary embodiments of the present application.

[0112] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache 422 , and may further include a read-only memory unit (ROM) 423 .

[0113] The storage unit 420 may also include a program / utility 424 having a set (at least one) of program modules 425, such program modules 425 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0114] Bus 430 may represent one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0115] The electronic device 400 can also communicate with one or more external devices 500 (e.g., a keyboard, a pointing device, a Bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 400, and / or any device that enables the electronic device 400 to communicate with one or more other computing devices (e.g., a router, a modem, etc.). This communication can occur via an I / O (input / output) interface 450, which can also be connected to a display unit 440 for displaying the content of the communication. Furthermore, the electronic device 400 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 460. As shown, the network adapter 460 communicates with other modules of the electronic device 400 via the bus 430. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device 400, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0116] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Furthermore, each functional unit may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0117] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0118] The units described as separate components may or may not be physically separate, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0119] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0120] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for controlling a side support device of a rolling mill, characterized in that: The rolling mill includes: a working roll and a plurality of side support devices, wherein the side support devices include a liner, a side support roll and a side support base, the side support roll and the side support base are provided on the liner, the side support base is connected to the side support roll, and the side support roll is configured to provide side support for the working roll, and the method includes: Obtaining a measured distance between a vertical surface of the side support base and a reference plane, wherein the reference plane is constructed by connecting reference points on each of the lining plates, and the reference plane and the lining plates are parallel to each other; The measured distance is compared with a preset distance. If the difference between the measured distance and the preset distance is greater than or equal to the preset difference, the extended distance of the side support roller is adjusted so that the difference between the measured distance and the preset distance is less than the preset difference, wherein the extended distance is the distance of the side support roller relative to a mechanical zero position, and the mechanical zero position is a preset working position when the side support roller provides side support to the working roller. When the difference between the measured distance and the preset distance is less than the preset difference, there is no intersection between the side support roller and the working roller.

2. The method according to claim 1, characterized in that The plurality of side support devices are relatively arranged on the inlet side and the outlet side of the rolling mill, and the reference surface is constructed in the following manner: Obtaining reference points of the lining plates of each of the two oppositely arranged side support devices, and using the center of the two reference points as the reference point; The reference plane is constructed according to the connecting lines of the reference points.

3. The method according to claim 1, characterized in that The side support device further comprises: a hydraulic cylinder configured to provide a hydraulic driving force to the side support roller, and the method further comprises: detecting the hydraulic driving force; If the hydraulic driving force is not within the preset driving force range, an early warning of hydraulic driving abnormality is issued.

4. The method according to claim 3, characterized in that The plurality of side support devices include a side support device on a driving side and a side support device on an operating side, and the detecting of the hydraulic driving force includes: detecting the hydraulic driving force on the driving side and the hydraulic driving force on the operating side; If the hydraulic driving force is not within the preset driving force range, issuing an early warning of hydraulic driving abnormality includes: If the difference between the hydraulic driving force on the driving side and the hydraulic driving force on the operating side is greater than a warning difference, a warning of hydraulic driving abnormality is issued.

5. The method according to claim 1, wherein The side support device further includes: a hydraulic cylinder configured to provide a hydraulic driving force to the side support roller, the hydraulic cylinder being provided with a position sensor, and the method further includes: During the rolling process of the work rolls, the driving position of the hydraulic cylinder is detected; If there is a deviation between the side support force of the side support roller on the working roll at the driving position and the side support force of the side support roller on the working roll at the preset position, the driving position of the hydraulic cylinder is compensated.

6. The method according to claim 1, wherein Before obtaining the measured distance between the vertical surface of the side support base and the reference surface, the method further includes: Before the rolling mill passes the strip steel, the extension distance of the side support roller is set to a target distance so that the side support roller provides support to the working roller so that the working roller is maintained at a target position. When the working roller is at the target position, there is no interference between the working roller and the strip steel, wherein the value range of the target distance is 30 mm-55 mm.

7. A rolling mill system, characterized in that: include: a working roll and a plurality of side support devices, the side support devices including liner plates and side support rolls, the side support rolls being configured to provide side support to the working rolls; A controller is connected to the side support device and is used to execute the method according to any one of claims 1 to 6.

8. The system according to claim 7, characterized in that The side support device further includes: a backing and a backing bearing, the plurality of side support devices including a plurality of the backing bearings, at least two of the backing bearings having different diameters, and each of the backing bearings being arranged along an extending direction from an inlet side to an outlet side of the rolling mill; Among them, each backing bearing is arranged in descending order from the central area to the surrounding area in order of diameter from large to small, the central area is the central area between the inlet side and the outlet side, and the surrounding area is the area between the inlet side and the outlet side except the central area.

9. The system according to claim 8, characterized in that The diameter of the backing bearing is in the range of 145 mm to 155 mm; and / or The difference between the diameters of the two backing bearings is less than or equal to 0.01 mm.

10. The system according to claim 7, wherein: The roughness of the side support roller ranges from 0.5 μm to 0.6 μm.

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