Method, device and equipment for acquiring elastic flexural deflection distribution of segmented wringing roller

Abstract

The invention relates to the technical field of steel rolling, and discloses a method, a device and equipment for acquiring elastic flexural deflection distribution of a segmented wringing roller. The method comprises the following steps: acquiring design parameters of a segmented wringing roller; according to the design parameters, elastic flexural deflection distribution under each basic working condition and each composite basic working condition is calculated, and a first distribution result and a second distribution result are obtained; calculating an influence coefficient matrix of elastic flexural deflection according to the first distribution result and the second distribution result; calculating elastic deflection deformation distribution under the reference working condition to obtain a third distribution result; and according to the influence coefficient matrix and the third deformation distribution result, calculating the elastic deflection deformation distribution of the segmented wringing roller under the actual working condition. According to the method, the influence coefficient matrix is calculated based on the distribution result of the basic working condition and the composite basic working condition, the influence coefficient matrix serves as the basic data of actual working condition calculation, the elastic deflection deformation distribution of the segmented wringing roller under the actual working condition is rapidly calculated, and the calculation speed is greatly increased under the condition that high calculation precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of steel rolling, and in particular to a method, a device and equipment for obtaining the elastic deflection deformation distribution of a segmented squeeze roller. Background Art

[0002] The segmented squeeze roller device is arranged at the inlet and outlet sides of the rolling mill frame to wipe the emulsion or rolling oil on the surface of the strip. Figure 1 and Figure 2 As shown, the main structural features of the segmented squeezing roller arrangement include an upper squeezing roller 1 and a lower squeezing roller 2, which are arranged on the upper and lower sides of the strip 3 respectively; a group (two rows) of supporting short rollers in contact with the squeezing rollers are arranged on the top of the squeezing rollers (respectively, an upper left supporting short roller 4, an upper right supporting short roller 5, a lower left supporting short roller 6 and a lower right supporting short roller 7) to improve the stiffness of the roller system; during the production process, the pressure applied to the squeezing rollers is adjusted by the pressure system to cause local elastic flexural deformation of the squeezing rollers to change the roller shape of the squeezing rollers, so that the squeezing rollers and the strip are closely fitted in the width direction, thereby efficiently removing the residual emulsion or rolling oil on the surface of the strip.

[0003] The key to the application of this technology is to establish a quantitative relationship between the pressure of the pressure system and the local elastic flexural deformation distribution of the squeeze roller, so that the pressure of the pressure system can be automatically adjusted according to the local leakage on the strip surface to improve the local fit between the squeeze roller and the strip surface, and achieve efficient removal of residual emulsion or rolling oil on the strip surface. The finite element method is usually used to calculate the elastic flexural deformation distribution of the roller. However, the current finite element method has low calculation efficiency and long calculation time, and cannot meet the requirements of fast online calculation in the on-site production process. Therefore, it is necessary to develop a method that can both ensure the calculation accuracy and quickly obtain the elastic flexural deformation distribution of the segmented squeeze roller. Summary of the invention

[0004] The main purpose of the present invention is to provide a method, device and equipment for obtaining the elastic deflection deformation distribution of a segmented squeezing roller, aiming to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides a method for obtaining the elastic deflection deformation distribution of a segmented squeezing roller, comprising:

[0006] Obtaining design parameters of segmented squeeze rollers;

[0007] According to the design parameters, elastic deflection distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition is calculated to obtain a first distribution result and a second distribution result;

[0008] Calculate an influence coefficient matrix of elastic deflection according to the first distribution result and the second distribution result;

[0009] Calculate the elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition and obtain the third distribution result;

[0010] The elastic deflection deformation distribution of the segmented squeeze roller under actual working conditions is calculated according to the influence coefficient matrix and the third deformation distribution result.

[0011] In some embodiments, the elastic deflection deformation distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition is calculated according to the design parameters to obtain a first distribution result and a second distribution result, including:

[0012] The finite element method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under various basic working conditions according to the design parameters to obtain a first distribution result;

[0013] The finite element method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under each composite basic working condition according to the design parameters to obtain a second distribution result.

[0014] In some embodiments, the basic operating condition is the operating condition when a single pressure system is set separately, and the number of the basic operating conditions is k multiples of the number of pressure systems; wherein k is an integer and k≥2;

[0015] The composite basic operating condition includes multiple basic operating conditions, and the number of the composite basic operating conditions is the same as the number of the pressure systems.

[0016] In some embodiments, the calculating the influence coefficient matrix of elastic deflection according to the first distribution result and the second distribution result includes:

[0017] Determining the relationship between the basic operating conditions and the composite basic operating conditions;

[0018] Constructing a matrix equation according to the first distribution result, the second distribution result and an influence coefficient matrix based on the mutual relationship;

[0019] The matrix equation is solved to obtain the influence coefficient matrix of elastic flexural deformation.

[0020] In some embodiments, the calculating of the elastic deflection distribution of the segmented squeeze roller under the reference working condition to obtain a third distribution result includes:

[0021] Obtain the first distribution result under basic working conditions;

[0022] The elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition is calculated based on the linear interpolation method and the first distribution result to obtain a third distribution result.

[0023] In some embodiments, the reference operating condition is the operating condition when a single pressure system actually operates alone, and the number of the reference operating conditions is the same as the number of pressure systems.

[0024] In some embodiments, the step of calculating the elastic deflection deformation distribution of the segmented squeeze roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result includes:

[0025] Based on the influence coefficient weighting method, a weighted sum is performed according to the influence coefficient matrix and the third deformation distribution result to obtain the elastic deflection deformation distribution of the segmented squeeze roller under actual working conditions; wherein the actual working condition includes a plurality of reference working conditions.

[0026] In some embodiments, the design parameters include: the diameter of the squeeze roller, the roller body length and the number of discrete points of the roller body segmentation, the diameter of the supporting short roller, the roller body length and the number of groups, as well as the number of pressure systems, the strip width and the maximum cylinder pressure.

[0027] In addition, to achieve the above-mentioned purpose, the present invention also proposes a device for obtaining the elastic deflection deformation distribution of a segmented squeeze roller, comprising:

[0028] A parameter acquisition module, used to acquire design parameters of the segmented squeeze roller;

[0029] A basic and composite distribution calculation module, used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition according to the design parameters, and obtain a first distribution result and a second distribution result;

[0030] A matrix calculation module, used for calculating an influence coefficient matrix of elastic flexural deformation according to the first distribution result and the second distribution result;

[0031] A reference distribution calculation module is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under reference working conditions to obtain a third distribution result;

[0032] The actual distribution calculation module is used to calculate the elastic deflection deformation distribution of the segmented squeezing roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result.

[0033] In addition, to achieve the above-mentioned purpose, the present invention also proposes an electronic device, which includes: a memory, a processor, and a segmented squeezing roller elastic deflection deformation distribution acquisition program stored in the memory and run on the processor, and the segmented squeezing roller elastic deflection deformation distribution acquisition program is configured to implement the segmented squeezing roller elastic deflection deformation distribution acquisition method as described above.

[0034] The present invention provides a method for obtaining the elastic flexural deformation distribution of a segmented squeezing roller, comprising: obtaining design parameters of the segmented squeezing roller; calculating the elastic flexural deformation distribution of the segmented squeezing roller under each basic working condition and each composite basic working condition according to the design parameters, and obtaining a first distribution result and a second distribution result; calculating an influence coefficient matrix of elastic flexural deformation according to the first distribution result and the second distribution result; calculating the elastic flexural deformation distribution of the segmented squeezing roller under reference working conditions, and obtaining a third distribution result; and calculating the elastic flexural deformation distribution of the segmented squeezing roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result. In the present invention, by defining basic working conditions and composite basic working conditions, based on the accurately calculated distribution of elastic flexural deformation of the segmented squeezing roller under the basic working conditions and the composite basic working conditions, the influence coefficient matrix of the elastic flexural deformation of the squeezing roller is further calculated. The influence coefficient matrix will be used as the basic data for calculating the actual working conditions. Based on the relationship between the reference working conditions and the basic working conditions, the elastic flexural deformation distribution of the segmented squeezing roller under the actual working conditions is quickly calculated according to the influence coefficient matrix and the reference working condition data. The calculation speed can be greatly improved while ensuring high calculation accuracy, thereby meeting the requirements for fast online calculation in the on-site production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a side view of a segmented squeeze roller;

[0036] Figure 2 It is a schematic diagram of a top view of a segmented squeeze roller;

[0037] Figure 3 A schematic diagram of the structure of an electronic device in a hardware operating environment involved in an embodiment of the present invention;

[0038] Figure 4 It is a schematic flow chart of an embodiment of a method for obtaining elastic deflection distribution of a segmented squeezing roller according to the present invention;

[0039] Figure 5 It is a flow chart of a method for obtaining the elastic deflection deformation distribution of a segmented squeezing roller involved in an embodiment of the present invention;

[0040] Figure 6 A schematic diagram of a pressure system according to an embodiment of the present invention applying pressure to a segmented squeeze roller;

[0041] Figure 7 It is a schematic diagram of the elastic deflection deformation distribution data of the segmented squeezing roller under the basic working conditions involved in the embodiment of the present invention;

[0042] Figure 8 It is a schematic diagram of elastic deflection deformation distribution data of a segmented squeeze roller under a composite basic working condition involved in an embodiment of the present invention;

[0043] Fig. 9 This is a schematic diagram of the influence coefficient data involved in the embodiment of the present invention;

[0044] Fig.10 It is a schematic diagram of the elastic deflection deformation distribution data of the segmented squeeze roller under the 1-1# reference working condition, 2-1# reference working condition and 3-1# reference working condition involved in the embodiment of the present invention;

[0045] Fig.11 It is a schematic diagram comparing the elastic deflection deformation distribution curves of the segmented squeeze roller calculated by the method of the present application and the finite element method under the 1# actual working condition involved in the embodiment of the present invention;

[0046] Fig.12 It is a schematic diagram of the elastic deflection deformation distribution data of the segmented squeezing roller under the 1-2# reference working condition, 2-2# reference working condition and 3-2# ​​reference working condition involved in the embodiment of the present invention;

[0047] Fig.13 It is a schematic diagram comparing the elastic deflection deformation distribution curves of the segmented squeeze roller calculated by the method of the present application and the finite element method under the 2# actual working condition involved in the embodiment of the present invention;

[0048] Fig.14 It is a structural block diagram of an embodiment of a device for acquiring elastic deflection deformation distribution of a segmented squeezing roller according to the present invention.

[0049] Explanation of the accompanying drawings: 1. Upper squeeze roller; 2. Lower squeeze roller; 3. Strip steel; 4. Upper left supporting short roller; 5. Upper right supporting short roller; 6. Lower left supporting short roller; 7. Lower right supporting short roller; 8-1. 1# cylinder; 8-2. 2# cylinder; 8-3. 3# cylinder; 8-4. 4# cylinder; 8-5. 5# cylinder; 8-6. 6# cylinder; 9. First pressure system; 10. Second pressure system; 11. Third pressure system.

[0050] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0054] Reference Figure 3 , Figure 3 The figure is a schematic diagram of the structure of an electronic device of the hardware operating environment involved in the embodiment of the present invention.

[0055] like Figure 3 As shown, the electronic device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM memory) or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0056] Those skilled in the art will understand that Figure 3 The structure shown in the figure does not constitute a limitation on the electronic device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0057] like Figure 3 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a segmented squeeze roller elastic deflection deformation distribution acquisition program.

[0058] exist Figure 3 In the electronic device shown, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the electronic device of the present invention can be set in the electronic device, and the electronic device calls the segmented squeezing roller elastic deflection deformation distribution acquisition program stored in the memory 1005 through the processor 1001, and executes the segmented squeezing roller elastic deflection deformation distribution acquisition method provided in an embodiment of the present invention.

[0059] The invention provides a method, a device and equipment for obtaining the elastic deflection deformation distribution of a segmented squeeze roller.

[0060] The embodiment of the present invention provides a method for obtaining the elastic deflection distribution of a segmented squeeze roller, referring to Figure 4 , Figure 4 It is a schematic flow chart of an embodiment of a method for obtaining the elastic deflection deformation distribution of a segmented squeezing roller according to the present invention.

[0061] like Figure 4 As shown, the method for obtaining the elastic deflection deformation distribution of the segmented squeezing roller includes:

[0062] Step S100: obtaining design parameters of the segmented squeeze roller;

[0063] Step S200: calculating the elastic deflection distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition according to the design parameters, and obtaining a first distribution result and a second distribution result;

[0064] Step S300: calculating an influence coefficient matrix of elastic deflection according to the first distribution result and the second distribution result;

[0065] Step S400: calculating the elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition to obtain a third distribution result;

[0066] Step S500: calculating the elastic deflection deformation distribution of the segmented squeeze roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result.

[0067] It should be noted that the execution subject in this embodiment may be an electronic device, which may be a computer device with data processing functions, or other devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment, a computer device is used as an example for explanation.

[0068] In one embodiment, the design parameters of the segmented squeezing roller are obtained, and the design parameters include: the diameter of the squeezing roller, the roller body length and the number of discrete points of the roller body segmentation, the diameter of the supporting short roller, the roller body length and the number of groups, and the number of pressure systems, the strip width and the maximum cylinder pressure.

[0069] Specifically, the design parameters include but are not limited to the diameter D1 (unit mm), the roller length B1 (unit mm) and the number of discrete points M of the roller segment of the squeeze roller, the diameter D2 (unit mm), the roller length B2 (unit mm) and the number of groups Q of the supporting short roller, and the number N of the pressure system, the strip width B (unit mm) and the maximum pressure P of the pressure system. max (Unit: MPa).

[0070] In one embodiment, the elastic flexural deformation distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition is calculated according to the design parameters to obtain a first distribution result and a second distribution result, including: using the finite element method to calculate the elastic flexural deformation distribution of the segmented squeeze roller under each basic working condition according to the design parameters to obtain the first distribution result; using the finite element method to calculate the elastic flexural deformation distribution of the segmented squeeze roller under each composite basic working condition according to the design parameters to obtain the second distribution result.

[0071] In one embodiment, the basic operating condition is the operating condition when a single pressure system is set separately, and the number of the basic operating conditions is k multiples of the number of pressure systems; wherein k is an integer and k≥2; the composite basic operating condition includes multiple basic operating conditions, and the number of the composite basic operating conditions is the same as the number of pressure systems.

[0072] Specifically, Figure 5 As shown, the elastic deflection deformation distribution y0(i, j) of the segmented squeeze roller under each basic working condition is calculated; where 1≤i≤T, 1≤j≤M, and T is the number of basic working conditions. The basic working condition is the working condition when a single pressure system is set separately, and its working condition characteristics are determined by the pressure of the pressure system. The number of basic working conditions T is an integer multiple of the number of pressure systems N, that is, T=kN, k is an integer, and k≥2.

[0073] Specifically, the elastic deflection deformation distribution y1(i, j) of the segmented squeeze roller under each composite basic working condition is calculated; wherein 1≤i≤S, 1≤j≤M, and S is the number of composite basic working conditions. The composite basic working condition is composed of multiple basic working conditions, and the number of composite basic working conditions S is the same as the number of pressure systems N, that is, S=N.

[0074] It can be understood that the elastic deflection deformation distribution of the segmented squeeze roller under the basic working conditions and the composite basic working conditions can be obtained by finite element simulation calculation. The calculation process of the roller elastic deformation distribution using finite element includes the steps of roller meshing, constraint condition selection and elastic mechanics model formula, which will not be described in detail here.

[0075] In one example, calculating the elastic deformation distribution of the roller by the finite element method (FEM) is a process involving solid mechanics and numerical analysis. The process of calculating the elastic deformation distribution of the roller by using the finite element method may include the following steps: establishing the geometric model and material properties of the roller, such as using the modeling tools in the CAD software or the finite element software to create the geometric model of the roller, and defining the material properties of the roller, such as the elastic modulus, Poisson's ratio, etc.; performing finite element analysis: meshing is to divide the roller model into a finite number of units and nodes; boundary conditions and loads are to apply boundary conditions and loads at appropriate locations of the roller, and the boundary conditions may include fixed support, rolling contact, etc., and the loads may include rolling force, temperature change, etc.; establishing a stiffness matrix: for each unit , according to its geometry and material properties, use the formula to calculate the unit stiffness matrix; assemble the global stiffness matrix: assemble the stiffness matrices of all units into a global stiffness matrix; apply loads and boundary conditions: apply external load vectors and boundary conditions to the global stiffness matrix to form equations to be solved (linear equations); use appropriate numerical solution methods (such as Gaussian elimination method, iteration method, etc.) to solve the above linear equations to obtain node displacements; using node displacements, the elastic deformation of each node can be calculated; through the post-processing function of the finite element software, draw and analyze the elastic deformation distribution of the roller, usually including contour maps, deformation maps, etc. In the entire analysis process, the basic steps of the finite element method can be summarized as follows: Establish a mathematical model: convert the actual problem into a solvable mathematical equation. Discretization: discretize the continuum into a finite number of units and nodes. Solution: solve the discretized linear or nonlinear equations. Interpret the results: interpret the numerical results as physical phenomena, such as elastic deformation distribution.

[0076] In one embodiment, the influence coefficient matrix of elastic flexural deformation is calculated according to the first distribution result and the second distribution result, including: determining the relationship between the basic operating condition and the composite basic operating condition; constructing a matrix equation based on the relationship according to the first distribution result, the second distribution result and the influence coefficient matrix; solving the matrix equation to obtain the influence coefficient matrix of elastic flexural deformation.

[0077] Specifically, Figure 5As shown, according to the elastic deflection deformation distribution y0(i, j) and y1(i, j) of the segmented squeeze roller under the basic working condition and the composite basic working condition, the influence coefficient matrix K(i, j) of the elastic deflection deformation is calculated; wherein, 1≤i≤N, 1≤j≤M.

[0078] Exemplarily, the process of calculating the influence coefficient matrix of elastic deflection according to the elastic deflection distribution of the segmented squeezing roller under the basic working condition and the composite basic working condition may include the following steps: first, obtain the elastic deflection distribution y0(i, j) and y1(i, j) under these two working conditions through finite element analysis or other numerical methods; define the influence coefficient: the influence coefficient is usually defined as the displacement of the i-th node when a unit force acts on the j-th node. Therefore, for each node, it is necessary to apply a unit force separately and calculate the resulting displacement; calculate the influence coefficient matrix of the basic working condition: for each node j, a unit force is applied to obtain the resulting elastic deflection distribution, thereby calculating the elements of the influence coefficient matrix; calculate the influence coefficient matrix of the composite basic working condition: similarly, for each node j, a unit force is applied to obtain the resulting elastic deflection distribution, thereby calculating the elements of the influence coefficient matrix; synthesize the influence coefficient matrix: if the basic working condition and the composite basic working condition are independent of each other, then the synthesized influence coefficient matrix can be obtained by simple superposition. If there is interaction between the two working conditions, the synthesis method needs to be adjusted according to the specific interaction relationship. Through the above steps, the influence coefficient matrix describing the elastic deflection of the segmented squeeze roller can be obtained. This matrix can be used to predict the elastic deflection of the squeeze roller under different combinations of loads and boundary conditions.

[0079] It should be noted that in practical applications, more factors may need to be considered, such as nonlinear behavior, contact conditions, and dynamic effects. In addition, calculating the influence coefficient matrix may require a large amount of computing resources and complex numerical methods. This embodiment does not limit this.

[0080] In one embodiment, the elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition is calculated to obtain a third distribution result, including: obtaining a first distribution result under the basic working condition; calculating the elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition based on a linear interpolation method and the first distribution result to obtain a third distribution result.

[0081] In one embodiment, the reference operating condition is the operating condition when a single pressure system actually operates alone, and the number of the reference operating conditions is the same as the number of pressure systems.

[0082] Specifically, Figure 5As shown, the elastic flexural deformation distribution y2(i, j) of the segmented squeeze roller under the reference working condition is calculated; wherein, 1≤i≤R, 1≤j≤M, and R is the number of reference working conditions. The reference working condition is the working condition when a single pressure system actually operates alone, and its working condition characteristics are determined by the pressure of the pressure system. The number of reference working conditions R is the same as the number of pressure systems N, that is, R=N. Exemplarily, the elastic flexural deformation distribution of the segmented squeeze roller under the reference working condition is calculated by linear interpolation method based on the elastic flexural deformation distribution of the segmented squeeze roller under the basic working condition.

[0083] In one embodiment, the elastic flexural deformation distribution of the segmented squeezing roller under actual working conditions is calculated based on the influence coefficient matrix and the third deformation distribution result, including: performing weighted summation based on the influence coefficient weighting method according to the influence coefficient matrix and the third deformation distribution result to obtain the elastic flexural deformation distribution of the segmented squeezing roller under actual working conditions; wherein the actual working condition includes multiple reference working conditions.

[0084] Specifically, Figure 5 As shown in FIG. 1 , according to the influence coefficient matrix K(i, j) of elastic deflection and the elastic deflection distribution y2(i, j) of the segmented squeeze roller under the reference working condition, the influence coefficient weighted method is used to calculate the elastic deflection distribution y(j) of the segmented squeeze roller under the actual working condition, where 1≤j≤M. The specific calculation formula is:

[0085]

[0086] Among them, the actual working condition is composed of multiple reference working conditions.

[0087] It should be noted that the feasibility of the method described in this embodiment is further illustrated by actual data. The following design parameters are used as an example: the diameter D1 of the squeeze roller is 60 mm, the roller body length B1 is 1450 mm, the number of discrete points of the roller body segment M is 21, the diameter D2 of the supporting short roller is 50 mm, the roller body length B2 is 180 mm, the number of groups Q of supporting short rollers is 6 groups (two short rollers opposite to each other are one group), the number N of pressure systems is 3, the strip width B is 1300 mm, and the maximum cylinder pressure P is 100 mm. max It is 0.6MPa.

[0088] like Figure 6 As shown, six cylinders are used as actuators of the pressure system to exert pressure on the segmented squeeze rollers, wherein one cylinder applies pressure to the bearing seats on both sides of each group of supporting short rollers, and the pressure is transmitted from the roller surfaces of the supporting short rollers 5-1, 5-2, 5-3, 5-4, 5-5 and 5-6 to the roller surface of the squeeze roller 1, thereby realizing the local elastic flexural deformation of the squeeze roller 1. From the operating side to the transmission side of the squeeze roller 1, as shown in FIG. Figure 6As shown, the cylinders are numbered from 1# to 6# in sequence along the roller body direction of the squeeze roller 1, wherein the 1# cylinder (as shown in FIG. Figure 6 8-1) and 6# cylinder (as shown Figure 6 8-6) share the first pressure system 9, 2# cylinder (as shown Figure 6 8-2) and 5# cylinder (as shown Figure 6 8-5) share the second pressure system 10, 3# cylinder (as shown Figure 6 8-3) and 4# cylinder (as shown Figure 6 As shown in 8-4), a third pressure system 11 is shared.

[0089] For example, the basic working condition is the working condition when a single pressure system is set separately. The number of basic working conditions is 9 (three times the number of pressure systems), namely: 1# basic working condition: the pressure of the first pressure system is 0.2MPa, and the pressures of the second and third pressure systems are 0; 2# basic working condition: the pressure of the first pressure system is 0.4MPa, and the pressures of the second and third pressure systems are 0; 3# basic working condition: the pressure of the first pressure system is 0.6MPa, and the pressures of the second and third pressure systems are 0; 4# basic working condition: the pressure of the second pressure system is 0.2MPa, and the pressures of the first and third pressure systems are 0. The pressure of the system is 0; 5# basic working condition: the pressure of the second pressure system is 0.4MPa, and the pressure of the first and third pressure systems is 0; 6# basic working condition: the pressure of the second pressure system is 0.6MPa, and the pressure of the first and third pressure systems is 0; 7# basic working condition: the pressure of the third pressure system is 0.2MPa, and the pressure of the first and second pressure systems is 0; 8# basic working condition: the pressure of the third pressure system is 0.4MPa, and the pressure of the first and second pressure systems is 0; 9# basic working condition: the pressure of the third pressure system is 0.6MPa, and the pressure of the first and second pressure systems is 0. The finite element method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under the above 9 basic working conditions, and the calculation results are as follows Figure 7 The elastic deflection deformation distribution data of the segmented squeeze roller under the basic working conditions are shown.

[0090] Exemplarily, the composite basic working condition is composed of a plurality of basic working conditions, and the number S of composite basic working conditions is 3 (the same as the number of pressure systems), namely: 1# composite basic working condition: the pressure of the first pressure system is 0.2MPa, the pressure of the second pressure system is 0.2MPa, and the pressure of the third pressure system is 0.2MPa, that is, the 1# composite basic working condition is composed of the 1# basic working condition, the 4# basic working condition and the 7# basic working condition. 2# composite basic working condition: the pressure of the first pressure system is 0.4MPa, the pressure of the second pressure system is 0.4MPa, and the pressure of the third pressure system is 0.4MPa, that is, the 2# composite basic working condition is composed of the 2# basic working condition, the 5# basic working condition and the 8# basic working condition. 3# composite basic working condition: the pressure of the first pressure system is 0.6MPa, the pressure of the second pressure system is 0.6MPa, and the pressure of the third pressure system is 0.6MPa, that is, the 3# composite basic working condition is composed of the 3# basic working condition, the 6# basic working condition and the 9# basic working condition. The finite element method is used to calculate the elastic deflection distribution of the segmented squeeze roller under the above three composite basic working conditions. The calculation results are as follows: Figure 8 The elastic deflection deformation distribution data of the segmented squeeze roller under the composite basic working conditions are shown.

[0091] For example, by Figure 7 and Figure 8 The data shown can be used to solve the influence coefficient K(i,j) of the i-th pressure system on the elastic deflection deformation at the j-th discrete point of the segmented squeeze roller, where 1≤i≤3, 1≤j≤21. For example, when j=19, Figure 7 The table shown (row number 19) and Figure 8 The data in the table shown (row number 19) can be used to obtain the following equation:

[0092] K(1,19)×1.2166+K(2,19)×0.71835+K(3,19)×0.27659=1.2959

[0093] K(1,19)×1.7067+K(2,19)×0.8587+K(3,19)×0.25092=1.8638

[0094] K(1,19)×2.1969+K(2,19)×0.97162+K(3,19)×0.21794=2.4318

[0095] Write the above formula in matrix form and solve the inverse matrix to get K(1,19), K(2,19) and K(3,19). The influence coefficients obtained by solving the above method steps in this embodiment are as follows: Fig. 9 shown.

[0096] It should be noted that the above basic working condition data and the corresponding complex basic working condition data are determined by the design parameters of the segmented squeeze roller. These working conditions only need to be calculated once using the finite element method, and the calculated influence coefficient matrix will be stored as the basic data for actual working condition calculation. When calculating the actual working condition data, it is no longer necessary to recalculate these basic working condition data and the corresponding complex basic working condition data using the finite element method, nor is it necessary to recalculate the influence coefficient matrix.

[0097] For example, the reference operating condition is the operating condition when a single pressure system actually operates alone, and its operating condition characteristics are determined by the pressure of the pressure system. The number of reference operating conditions R is 3 (the same as the number of pressure systems). The actual operating condition is composed of a combination of reference operating conditions. The following takes two actual operating conditions (actual operating condition 1# and actual operating condition 2#) as an example for further explanation.

[0098] (1) Actual working conditions of 1#:

[0099] The relevant working condition parameters of 1# actual working condition are: the pressure of the first pressure system is 0.1MPa, the pressure of the second pressure system is 0.3MPa, and the pressure of the third pressure system is 0.5MPa. Then the 1# actual working condition consists of the following three reference working conditions, namely: 1-1# reference working condition: the pressure of the first pressure system is 0.1MPa, and the pressures of the second and third pressure systems are 0; 2-1# reference working condition: the pressure of the second pressure system is 0.3MPa, and the pressures of the first and third pressure systems are 0; 3-1# reference working condition: the pressure of the third pressure system is 0.5MPa, and the pressures of the first and second pressure systems are 0.

[0100] According to the 1# basic working condition data, the linear interpolation method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller of the 1-1# reference working condition; according to the 4# basic working condition and the 5# basic working condition data, the linear interpolation method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller of the 2-1# reference working condition; according to the 8# basic working condition and the 9# basic working condition data, the linear interpolation method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller of the 3-1# reference working condition. The calculation results are as follows: Fig.10 The elastic deflection deformation distribution data of the segmented squeeze roller under the 1-1# reference condition, 2-1# reference condition and 3-1# reference condition are shown.

[0101] according to Fig. 9 and Fig.10 The data shown in the figure are calculated by using the influence coefficient weighting method to obtain the elastic deflection deformation distribution of the segmented squeeze roller under the actual working conditions of 1#. Fig.11 The elastic deflection deformation distribution curves of the segmented squeeze roller calculated by the method described in this application (influence coefficient weighted method) and the finite element method under the actual working conditions of 1#, and it can be seen that the calculation results of the two methods are very consistent.

[0102] (2) 2# actual working condition: The relevant working condition parameters of 2# actual working condition are: the pressure of the first pressure system is 0.5MPa, the pressure of the second pressure system is 0.1MPa, and the pressure of the third pressure system is 0.3MPa. The 2# actual working condition consists of the following three reference working conditions: 1-2# reference working condition: the pressure of the first pressure system is 0.5MPa, and the pressures of the second and third pressure systems are 0; 2-2# reference working condition: the pressure of the second pressure system is 0.1MPa, and the pressures of the first and third pressure systems are 0; 3-2# ​​reference working condition: the pressure of the third pressure system is 0.3MPa, and the pressures of the first and second pressure systems are 0.

[0103] According to the data of 2# basic working condition and 3# basic working condition, the elastic deflection deformation distribution of the segmented squeeze roller of the 1-2# reference working condition is calculated by linear interpolation method; according to the data of 4# basic working condition, the elastic deflection deformation distribution of the segmented squeeze roller of the 2-2# reference working condition is calculated by linear interpolation method; according to the data of 7# basic working condition and 8# basic working condition, the elastic deflection deformation distribution of the segmented squeeze roller of the 3-2# ​​reference working condition is calculated by linear interpolation method. The calculation results are as follows: Fig.12 The elastic deflection deformation distribution data of the segmented squeeze roller under the 1-2# reference condition, 2-2# reference condition and 3-2# ​​reference condition are shown.

[0104] according to Fig. 9 and Fig.12 The data shown in the figure are used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under the actual working conditions of 2# using the influence coefficient weighting method. Fig.13 The elastic deflection distribution curves of the segmented squeeze roller calculated by the method described in this application (influence coefficient weighted method) and the finite element method under the actual working conditions of 2#, and it can be seen that the calculation results of the two methods are very consistent.

[0105] It can be understood that, through the comparison of the calculation results of the above two actual working conditions (1# actual working condition and 2# actual working condition), it can be known that the method described in this embodiment can very quickly calculate the elastic flexural deformation distribution of the segmented squeezing roller. On the basis of the basic working condition data and the corresponding complex basic working condition data, it takes almost no time to calculate the actual working condition data using the method described in this embodiment (the time taken for computer calculation is less than 1ms), and the calculation accuracy can reach the same level as the finite element method. Therefore, the method described in this embodiment can be used for the prediction of the elastic flexural deformation distribution of the segmented squeezing roller and the online rapid calculation of the pressure setting values ​​of each pressure system, which can greatly improve the calculation speed while ensuring a high calculation accuracy, thereby meeting the requirements for fast online calculation in the on-site production process.

[0106] The present embodiment provides a method for obtaining the elastic flexural deformation distribution of a segmented squeezing roller, including: obtaining design parameters of the segmented squeezing roller; calculating the elastic flexural deformation distribution of the segmented squeezing roller under each basic working condition and each composite basic working condition according to the design parameters, and obtaining a first distribution result and a second distribution result; calculating an influence coefficient matrix of elastic flexural deformation according to the first distribution result and the second distribution result; calculating the elastic flexural deformation distribution of the segmented squeezing roller under reference working conditions, and obtaining a third distribution result; and calculating the elastic flexural deformation distribution of the segmented squeezing roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result. In this embodiment, by defining basic working conditions and composite basic working conditions, based on the accurately calculated distribution of elastic flexural deformation of the segmented squeezer roller under the basic working conditions and composite basic working conditions, the influence coefficient matrix of the elastic flexural deformation of the squeezer roller is further calculated. The influence coefficient matrix will be used as the basic data for calculating the actual working conditions. Based on the relationship between the reference working conditions and the basic working conditions, the elastic flexural deformation distribution of the segmented squeezer roller under the actual working conditions is quickly calculated according to the influence coefficient matrix and the reference working condition data. This can greatly improve the calculation speed while ensuring high calculation accuracy, thereby meeting the requirements for fast online calculation in the on-site production process.

[0107] In addition, an embodiment of the present invention further proposes a storage medium, on which a program for obtaining the elastic deflection deformation distribution of a segmented squeezer is stored. When the program for obtaining the elastic deflection deformation distribution of a segmented squeezer is executed by a processor, the steps of the method for obtaining the elastic deflection deformation distribution of a segmented squeezer as described above are implemented.

[0108] Reference Fig.14 , Fig.14 It is a structural block diagram of an embodiment of a device for acquiring elastic deflection deformation distribution of a segmented squeezing roller according to the present invention.

[0109] like Fig.14 As shown, the segmented squeezing roller elastic deflection deformation distribution acquisition device comprises:

[0110] A parameter acquisition module 10, used to acquire design parameters of the segmented squeeze roller;

[0111] A basic and composite distribution calculation module 20, for respectively calculating the elastic deflection deformation distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition according to the design parameters, to obtain a first distribution result and a second distribution result;

[0112] A matrix calculation module 30, configured to calculate an influence coefficient matrix of elastic deflection according to the first distribution result and the second distribution result;

[0113] A reference distribution calculation module 40 is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under reference working conditions to obtain a third distribution result;

[0114] The actual distribution calculation module 50 is used to calculate the elastic deflection deformation distribution of the segmented squeezing roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result.

[0115] The present embodiment proposes a device for acquiring the elastic flexural deformation distribution of a segmented squeezing roller. The device in the present embodiment defines basic working conditions and composite basic working conditions, and based on the accurately calculated elastic flexural deformation distribution of the segmented squeezing roller under the basic working conditions and composite basic working conditions, further calculates the influence coefficient matrix of the elastic flexural deformation of the squeezing roller. The influence coefficient matrix will be used as the basic data for calculating the actual working conditions. Based on the relationship between the reference working conditions and the basic working conditions, the elastic flexural deformation distribution of the segmented squeezing roller under the actual working conditions can be quickly calculated according to the influence coefficient matrix and the reference working condition data. This can greatly improve the calculation speed while ensuring high calculation accuracy, thereby meeting the requirements for fast online calculation in the on-site production process.

[0116] It should be noted that the technical details that are not fully described in the embodiment of the device for obtaining the elastic deflection deformation distribution of the segmented squeezing roller can be referred to the method for obtaining the elastic deflection deformation distribution of the segmented squeezing roller as described above provided in any embodiment of the present invention, and will not be repeated here.

[0117] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0118] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0119] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0120] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0121] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0122] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for obtaining elastic deflection distribution of a segmented squeeze roller, characterized in that: include: Obtaining design parameters of segmented squeeze rollers; According to the design parameters, elastic deflection distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition is calculated to obtain a first distribution result and a second distribution result; Calculate an influence coefficient matrix of elastic deflection according to the first distribution result and the second distribution result; Calculate the elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition and obtain the third distribution result; The elastic deflection deformation distribution of the segmented squeeze roller under actual working conditions is calculated according to the influence coefficient matrix and the third deformation distribution result.

2. The method according to claim 1, characterized in that The elastic deflection deformation distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition is calculated according to the design parameters to obtain a first distribution result and a second distribution result, including: The finite element method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under various basic working conditions according to the design parameters to obtain a first distribution result; The finite element method is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under each composite basic working condition according to the design parameters to obtain a second distribution result.

3. The method according to claim 2, characterized in that The basic working condition is the working condition when a single pressure system is set separately, and the number of the basic working conditions is k times the number of pressure systems; wherein k is an integer and k≥2; The composite basic operating condition includes multiple basic operating conditions, and the number of the composite basic operating conditions is the same as the number of the pressure systems.

4. The method according to claim 1, characterized in that The calculating the influence coefficient matrix of elastic deflection according to the first distribution result and the second distribution result includes: Determining the relationship between the basic operating conditions and the composite basic operating conditions; Constructing a matrix equation according to the first distribution result, the second distribution result and an influence coefficient matrix based on the mutual relationship; The matrix equation is solved to obtain the influence coefficient matrix of elastic flexural deformation.

5. The method according to claim 1, characterized in that The calculation of the elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition to obtain a third distribution result includes: Obtain the first distribution result under basic working conditions; The elastic deflection deformation distribution of the segmented squeeze roller under the reference working condition is calculated based on the linear interpolation method and the first distribution result to obtain a third distribution result.

6. The method according to claim 5, characterized in that The reference operating condition is the operating condition when a single pressure system actually operates alone, and the number of the reference operating conditions is the same as the number of pressure systems.

7. The method according to claim 1, characterized in that The step of calculating the elastic deflection deformation distribution of the segmented squeezing roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result includes: Based on the influence coefficient weighting method, a weighted sum is performed according to the influence coefficient matrix and the third deformation distribution result to obtain the elastic deflection deformation distribution of the segmented squeeze roller under actual working conditions; wherein the actual working condition includes a plurality of reference working conditions.

8. The method according to any one of claims 1 to 7, characterized in that The design parameters include: the diameter of the squeeze roller, the roller body length and the number of discrete points of the roller body segmentation, the diameter of the supporting short roller, the roller body length and the number of groups, as well as the number of pressure systems, the strip width and the maximum cylinder pressure.

9. A device for obtaining elastic deflection distribution of a segmented squeeze roller, characterized in that: include: A parameter acquisition module, used to acquire design parameters of the segmented squeeze roller; A basic and composite distribution calculation module, used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under each basic working condition and each composite basic working condition according to the design parameters, and obtain a first distribution result and a second distribution result; A matrix calculation module, used for calculating an influence coefficient matrix of elastic flexural deformation according to the first distribution result and the second distribution result; A reference distribution calculation module is used to calculate the elastic deflection deformation distribution of the segmented squeeze roller under reference working conditions to obtain a third distribution result; The actual distribution calculation module is used to calculate the elastic deflection deformation distribution of the segmented squeezing roller under actual working conditions according to the influence coefficient matrix and the third deformation distribution result.

10. An electronic device, characterized in that: The electronic device comprises: a memory, a processor and a segmented squeezing roller elastic deflection deformation distribution acquisition program stored in the memory and executable on the processor, wherein the segmented squeezing roller elastic deflection deformation distribution acquisition program is configured to implement a segmented squeezing roller elastic deflection deformation distribution acquisition method as described in any one of claims 1 to 8.

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