Method, system and equipment for adjusting bottom width of steel rail and medium

Abstract

The invention relates to the field of steel rolling, and provides a steel rail bottom width adjusting method, system and device and a medium, and the method comprises the steps: obtaining historical data of steel rail production through VR simulation, and constructing an expert experience model based on the historical data; integrating an expert empirical model in the simulation platform, and simulating the working condition of steel rail adjustment; when the deviation of the bottom width exceeds a preset value and the upper leg tip thickness and the lower leg tip thickness are larger than the head thickness, a horizontal roller and a bottom vertical roller of the rolling mill are adjusted; when the deviation of the bottom width exceeds a preset value and the upper leg tip thickness and the lower leg tip thickness are smaller than the head thickness, a horizontal roller or a bottom vertical roller of the rolling mill is adjusted. Aiming at the deviation problem of the bottom width of the steel rail, high-precision control over the bottom width of the steel rail is achieved, the stability of the rolling process is ensured, and the control precision of the bottom width of the steel rail is remarkably improved; the timeliness of adjustment is improved, and the normalization of steel rolling adjustment is ensured; the problem of low calculation efficiency in manual adjustment is solved, and errors caused by human factors are avoided.

Description

Technical Field

[0001] The invention relates to the field of steel rolling, and in particular to a method, system, equipment and medium for adjusting the bottom width of a rail. Background Art

[0002] The production of heavy rails is a very important part of railway construction, which is related to the safety and operation efficiency of the railway. From the information provided, modern heavy rail production mainly adopts two rolling modes: the traditional two-roller mode and the advanced four-roller universal mode.

[0003] 1. Two-roller mode: This is an older production method. Since the heavy rails produced by it cannot meet the high standards of modern high-speed heavy rails in terms of surface quality, cross-sectional dimensional accuracy and fullness of the rail crown, it is gradually being replaced by more advanced technologies.

[0004] 2. Four-roller universal mode: This mode is the mainstream choice for modern heavy rail production lines. It achieves accurate rolling of heavy rails through the combination of multiple stands. Specifically, the rolling process of the universal rolling mill includes the following steps: Billet opening machine: First, the steel billet is preliminarily rolled through two billet opening machines to form a rolled piece with a preliminary rail shape and establish the proportional relationship between the head, waist and bottom.

[0005] Universal unit: Universal unit usually consists of three or five stands, of which the five-stand configuration has higher control accuracy. Universal unit includes: Universal Roughing Mill (UR1), Edge Mill (E1), Universal Intermediate Mill (UR2), Edge Mill (E2), Universal Finishing Mill (UF).

[0006] Multi-pass rolling: Through continuous rolling of these stands, a finished heavy rail that meets the standards is finally formed.

[0007] Flexibility of adjustment: Compared with the traditional hole-type rolling method, the universal rolling method has greater flexibility in adjusting the head width and bottom width, which can be adjusted separately and in various ways.

[0008] The main advantage of the universal rolling method is that during the rolling process, the rolling of the rail head and rail bottom is completed by direct pressing down of the vertical rollers, which makes the rolling direction the same as the rotation direction of the rollers, thereby improving the efficiency and quality of rolling.

[0009] In general, the four-roll universal mode has become the preferred method for modern heavy rail production due to its high precision and flexibility.

[0010] Rail bottom width plays a vital role in railway track design. It is not only directly related to the track's bearing capacity, but also crucial to ensuring the smooth operation and safety of trains. Rails with a larger bottom width provide a wider contact area and stronger support, can withstand heavier train loads, and adapt to more frequent trains, thus significantly improving the track's bearing capacity.

[0011] In addition, the increase in rail bottom width can effectively improve the stability of the track. The wider bottom design helps reduce the bending and deformation of the track caused by train loads and reduces the risk of train derailment, which is crucial to ensuring the safety of railway transportation.

[0012] However, a wider rail bottom width means that more steel is needed to manufacture the rails. Wide-bottom rails may also require stronger sleepers, fasteners and other supporting facilities, which will also increase material costs and increase construction difficulty.

[0013] Therefore, precise adjustment of the bottom width is a technical challenge in the production of rails. There are cross-influences between different adjustment methods and parameters, and the accuracy of the parameters is crucial to the analysis results of equipment and specification parameters. These factors may lead to deviations between the analysis results and the actual deformation law and adjustment method. Summary of the invention

[0014] Based on the above purpose, the present invention proposes a method for adjusting the bottom width of a rail, comprising: Obtain historical data of rail production through VR simulation, and build an expert experience model based on the historical data; Integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment; In response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, adjusting the horizontal roll and the bottom vertical roll of the rolling mill; In response to the bottom width deviation exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, the horizontal roll or the bottom vertical roll of the rolling mill is adjusted.

[0015] In some embodiments, in response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, the step of adjusting the horizontal roll and the bottom vertical roll of the rolling mill includes: In response to the deviation of the bottom width exceeding a first preset value, adjusting a horizontal roll of the rolling mill based on a first scheme; In response to the deviation of the bottom width exceeding a second preset value, adjusting the horizontal rolls and the bottom vertical rolls of the rolling mill based on a second scheme; In response to the deviation of the bottom width exceeding a third preset value, the horizontal rolls and the bottom vertical rolls of the rolling mill are adjusted based on a third scheme.

[0016] In some embodiments, in response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, the step of adjusting the horizontal roll or the bottom vertical roll of the rolling mill includes: In response to the deviation of the bottom width exceeding a fourth preset value, adjusting the horizontal rolls of the rolling mill based on a fourth scheme; In response to the deviation of the bottom width exceeding a fifth preset value, adjusting the bottom vertical roll of the rolling mill based on a fifth scheme; In response to the bottom width deviation exceeding a sixth preset value, the bottom vertical rolls of the rolling mill are adjusted based on a sixth scheme.

[0017] In some embodiments, the step of obtaining historical data of rail production through VR simulation includes: Obtain information about the rails and their surroundings, and use VR technology to simulate a virtual rail environment; In a virtual environment, the rail adjustment process under different conditions is simulated, and various parameters and results of the simulation process are recorded as historical data.

[0018] In some embodiments, the step of acquiring historical data and building an expert experience model includes: The historical bottom width specifications of each team are extracted from the historical data; Analyze the distribution of historical bottom width specification deviation values, rank them according to the control effects of historical bottom width specifications, and use the teams whose rankings exceed the threshold as expert knowledge; An expert experience model is constructed based on deviation value distribution and expert knowledge.

[0019] In some embodiments, the method further comprises: According to different specification deviation values, corresponding adjustment plans are established in the expert experience model.

[0020] In some embodiments, in response to the upper leg tip thickness, lower leg tip thickness and head thickness simultaneously exceeding the deviation, the percentages of the upper leg tip thickness, lower leg tip thickness and head thickness exceeding the deviation are compared, and the part with the larger exceeding proportion is adjusted preferentially.

[0021] The present invention provides a system for adjusting the bottom width of a rail, comprising: A construction unit configured to obtain historical data of rail production through VR simulation and to construct an expert experience model based on the historical data; A simulation unit configured to integrate an expert experience model in a simulation platform and simulate a working condition of rail adjustment; A first adjustment unit is configured to adjust the horizontal roll and the bottom vertical roll of the rolling mill in response to the deviation of the bottom width exceeding a preset value and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness; The second adjustment unit is configured to adjust the horizontal roll or the bottom vertical roll of the rolling mill in response to the bottom width deviation exceeding a preset value and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness.

[0022] The present invention provides a computer device, comprising: At least one processor; and a memory, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, the steps of the method for adjusting the bottom width of a rail are executed.

[0023] The present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for adjusting the bottom width of a rail are executed.

[0024] The present invention has at least the following beneficial technical effects: The present invention proposes a method, system, device and medium for adjusting the bottom width of a rail. The method comprises: obtaining historical data of rail production through VR simulation, and building an expert experience model based on the historical data; integrating the expert experience model in a simulation platform, and simulating the working conditions of rail adjustment; in response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, adjusting the horizontal roller and the bottom vertical roller of the rolling mill; in response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, adjusting the horizontal roller or the bottom vertical roller of the rolling mill.

[0025] The present invention aims at the problem of deviation of the bottom width of the rail, realizes high-precision control of the bottom width of the rail, ensures the stability of the rolling process, and significantly improves the control accuracy of the bottom width of the rail. The timeliness of the adjustment is improved, and the standardization of the adjustment of steel rolling is ensured. This not only solves the problem of low calculation efficiency in manual adjustment, but also avoids errors caused by human factors. In addition, the fluctuations in the control of product bottom width specifications between teams are effectively reduced, thereby improving the consistency and reliability of the entire production process. Through precise calculation and optimization, a more scientific and systematic method is provided for rail production. It not only improves production efficiency, but also ensures high standards of product quality. It ensures that the rails can meet strict quality standards, thereby providing a solid foundation for the long-term stable operation of the railway. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0027] Figure 1A flow chart of a method for adjusting rail bottom width provided by the present invention; Figure 2 A system module diagram for adjusting the bottom width of a rail provided by the present invention; Figure 3 A flow chart of an embodiment of a method for adjusting rail bottom width provided by the present invention; Figure 4 A process diagram of a universal rolling rail pass profile of an embodiment of a method for adjusting rail bottom width provided by the present invention; Figure 5 A schematic diagram of a rail cross section and bottom width of an embodiment of a method for adjusting the bottom width of a rail provided by the present invention; Figure 6 Schematic diagram of the adjustment scheme for the bottom width of a rail of 60kg / m exceeding the specification of 0.1mm~0.2mm according to an embodiment of the method for adjusting the bottom width of a rail provided by the present invention Figure 1 ; Figure 7 A schematic diagram of a hole pattern for adjusting the bottom width of a rail provided by the present invention, wherein the bottom width of a rail of 60 kg / m is lower than the specification of 0.2 mm to 0.4 mm Figure 1 ; Figure 8 Schematic diagram of the adjustment scheme for the bottom width of a rail of 60kg / m exceeding the specification of 0.5mm~0.6mm according to an embodiment of the method for adjusting the bottom width of a rail provided by the present invention Figure 1 ; Fig. 9 Schematic diagram of the adjustment scheme for the bottom width of a rail of 60kg / m exceeding the specification of 0.1mm according to an embodiment of the method for adjusting the bottom width of a rail provided by the present invention Figure 2 ; Fig.10 Schematic diagram of the adjustment scheme hole type for a 60kg / m bottom width lower than 0.2mm~0.3mm specification according to an embodiment of a method for adjusting the bottom width of a rail provided by the present invention Figure 2 ; Fig.11 Schematic diagram of the adjustment scheme for the bottom width of a rail of 60kg / m exceeding the specification of 0.4mm~0.6mm according to an embodiment of the method for adjusting the bottom width of a rail provided by the present invention Figure 2 ; Fig.12 A schematic diagram of sampling data before adjustment of an embodiment of a rail bottom width adjustment method provided by the present invention; Fig.13 A graph of sampled data after adjustment of an embodiment of a method for adjusting rail bottom width provided by the present invention; Fig.14 A schematic diagram of the structure of an embodiment of a computer device provided by the present invention; Fig.15 A schematic diagram of the structure of an embodiment of a computer-readable storage medium provided by the present invention; Fig.16 A schematic diagram of a rail cross section and rail crown height of an embodiment of a rail bottom width adjustment method provided by the present invention; Fig.17 A schematic diagram of a rail cross section and belly cavity of an embodiment of a method for adjusting rail bottom width provided by the present invention; Fig.18 A schematic diagram of a rail cross section and an upper leg tip of an embodiment of a method for adjusting the bottom width of a rail provided by the present invention; Fig.19 A schematic diagram of a rail cross section and a lower leg tip of an embodiment of a method for adjusting rail bottom width provided by the present invention. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0029] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0030] The present invention proposes a method for adjusting the bottom width of a rail. Figure 1 , Figure 3 , Figure 4 and Figure 5 ,include: Based on the above purpose, the present invention proposes a method for adjusting the bottom width of a rail. Figure 1 , Figure 3 , Figure 4 , Figure 5 , Fig.16 , Fig.17 , Fig.18 and Fig.19 ,include: S1: Obtain historical data of rail production through VR simulation, and build an expert experience model based on the historical data; S2: Integrate the expert experience model in the simulation platform and simulate the working conditions of rail adjustment; S3: In response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, adjusting the horizontal roll and the bottom vertical roll of the rolling mill; S4: In response to the bottom width deviation exceeding the preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, the horizontal roll or the bottom vertical roll of the rolling mill is adjusted.

[0031] Universal rolling rail pass process Figure 4 As shown: Production line: semi-universal production line, equipment UR1 (universal rolling mill), E1, UR2 (universal rolling mill), E2, UF (semi-universal rolling mill). Adjustment of production conditions: normal steel output, normal rolling force, normal temperature, reasonable rolling speed, normal temperature.

[0032] Figure 5 , Fig.16 , Fig.17 , Fig.18 and Fig.19 Figure 5 shows different parameters of the rail section. Fig.16 For the rail crown, Fig.17 For the abdominal cavity, Fig.18 For the upper legs and thick head, Fig.19 It is the tip of the lower leg.

[0033] Rail section Figure 5 As shown, the bottom width is an important specification of the rail. There are two ideas for adjusting the bottom width of the rail in actual production. The first idea is: when the metal distribution of the rail is normal, the horizontal rolls of the two-roller mill are adjusted to achieve the purpose of controlling the bottom width specification. The second idea is: adjust the metal change at the bottom of the rail through the bottom vertical rolls of the universal mill / semi-universal mill to achieve the purpose of controlling the bottom width of the rail.

[0034] The main process of the present invention is as follows: Data collection and analysis: By collecting statistics on the production control data and expert experience data of each team, a historical bottom width specification control ranking table is compiled. The team with the best control effect is selected as the object of expert knowledge extraction.

[0035] Empirical model construction: Based on specification deviation values ​​and expert experience, the optimal adjustment plan is formed, and an empirical data model for bottom width specification control is established and integrated into the simulation platform.

[0036] Establishment of adjustment scheme library: For different specification deviation values, corresponding adjustment schemes are established in the experience model library to ensure the diversity and adaptability of the schemes.

[0037] Practical application: In actual production, the actual specifications of the rails are automatically measured by online profile scanners. The deviation between the actual specifications and the standard values ​​is compared, and appropriate adjustment plans are retrieved from the empirical model library.

[0038] Parameter adjustment and control: The adjustment plan contains the necessary adjustment parameters, which are sent to the PLC (Programmable Logic Controller) through data communication to achieve automatic adjustment of the rack parameters to ensure that the bottom width of the finished product meets the control requirements.

[0039] The adjustment method of the present invention is as follows: Specification parameter setting: Set the measured rail bottom width to H, head height to X, and leg height to Z; the standard rail bottom width is H0, head height is X0, and leg height is Z0.

[0040] Automatic measurement and judgment: Use online profile scanner to automatically measure the finished product specifications. The system automatically judges the size deviation between the bottom width H and the standard value H0 Whether it exceeds the control deviation ΔH0. If so, adjustment is required.

[0041] Determination of adjustment position: When the bottom width H exceeds the deviation ΔH0, the system automatically determines the main factors affecting the bottom width based on the head and leg heights. According to the deviation values ​​ΔX and ΔZ of the head and leg heights, the rolling mill position that needs to be adjusted is determined.

[0042] Adjustment ideas and priorities: If the head and leg height deviations exceed the control deviation at the same time, the system will adjust the height according to the percentage of excess. , compare the percentage of head and leg height excess, and give priority to adjusting the specification items with larger excess ratios.

[0043] Determination of roll gap adjustment amount: In the empirical model library, according to the different levels of the bottom width deviation range, the corresponding frame parameters are selected for adjustment to achieve precise control.

[0044] The present invention can reveal the law and trend of rail bottom width changes by collecting and analyzing historical data of rail production. The expert experience model constructed based on these data can more accurately predict and evaluate the changes in rail bottom width under different working conditions. By integrating the expert experience model in the simulation platform, the rail adjustment process under various working conditions can be simulated. Through simulation, the adjustment strategy can be optimized, the trial and error cost in actual operation can be reduced, and the adjustment accuracy and efficiency can be improved.

[0045] In some embodiments, see Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 8 In response to the deviation of the bottom width exceeding the preset value, and the upper leg tip thickness and the lower leg tip thickness are greater than the head thickness, the steps of adjusting the horizontal roll and the bottom vertical roll of the rolling mill include: In response to the deviation of the bottom width exceeding a first preset value, adjusting a horizontal roll of the rolling mill based on a first scheme; In response to the deviation of the bottom width exceeding a second preset value, adjusting the horizontal rolls and the bottom vertical rolls of the rolling mill based on a second scheme; In response to the deviation of the bottom width exceeding a third preset value, the horizontal rolls and the bottom vertical rolls of the rolling mill are adjusted based on a third scheme.

[0046] The first preset value is 0.1mm~0.2mm, and the first scheme is a ±0.1mm~0.2mm adjustment scheme; The second preset value is 0.3mm~0.4mm, and the second solution is a ±0.3mm~0.4mm adjustment solution; The third preset value is 0.5mm~0.7mm, and the third scheme is the ±0.5mm~0.7mm adjustment scheme.

[0047] The adjustment range is the first preset value: 0.1mm~0.2mm (exceeding / under the standard): Adjusting roller: E2 horizontal roller; Adjustment logic description: E2 is a two-roll mill, which has the most obvious influence on the adjustment of bottom width specifications. Figure 6 It can be seen that the downward pressure of the E2 horizontal roller changes the specifications of the rolled product.

[0048] The impact of the adjustment scheme: Pressing down the E2 horizontal roller will reduce the metal at the bottom of the rail and reduce the bottom width specification. The release of E2 is the opposite of the result of pressing down.

[0049] First option: (1) Specification is less than the standard lower limit ① When the bottom width specification is less than the standard lower limit of 0.1mm~0.2mm, by adjusting the E2 first pass horizontal roller to increase the roller gap by 0.1mm~0.2mm, the bottom width can be increased by 0.1mm~0.2mm and the upper and lower symmetry can be increased by 0.1mm~0.2mm.

[0050] (2) Specifications exceed the upper limit of the standard ① When the bottom width specification exceeds the standard upper limit by 0.1mm~0.2mm, by adjusting the E2 first pass horizontal roller to reduce the roller gap by 0.1mm~0.2mm, the bottom width can be reduced by 0.1mm~0.2mm and the upper and lower symmetry can be reduced by 0.1mm~0.2mm.

[0051] The adjustment range is the second preset value: 0.3mm~0.4mm (exceeding / falling short of the standard); Adjustment roller: UF bottom vertical roller, E2 horizontal roller; Adjustment logic description: For the case where the bottom width specification is lower than the standard, it is feasible to adjust the E2 horizontal roll alone, but it is not reasonable, which will cause large fluctuations in the rolling force of the E2 horizontal roll and steel twisting. Therefore, a more reasonable adjustment idea is to adjust the E2 horizontal roll together with the UF bottom vertical roll to balance the bottom metal changes, such as Figure 7 The following are the changes and impacts of the adjusted specifications. If the bottom width is lower than the standard, the adjustment idea is the opposite of the adjustment if it exceeds the standard.

[0052] The impact of the adjustment plan: the roll gap value of the E2 horizontal roll is adjusted, the amount of metal at the bottom of the rail is changed, and the bottom width specifications are affected; and because the UF is a semi-universal rolling mill and is equipped with a finished product hole, the adjustment of the bottom vertical roll causes the bottom metal to expand horizontally and longitudinally in the direction of the upper leg tip thickness and the lower leg tip thickness, affecting the bottom width, upper leg tip thickness, lower leg tip thickness, and upper and lower symmetrical specifications.

[0053] Second option: (1) Specification is less than the standard lower limit: ① When the bottom width specification is less than the standard lower limit of 0.3mm, increase the first pass horizontal roller gap of E2 by 0.2mm, and reduce the first pass horizontal roller gap of UF by 0.1mm, which can increase the bottom width by 0.3mm, increase the upper and lower symmetry by 0.15mm, and reduce the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0054] ② When the bottom width specification is less than the standard lower limit of 0.4mm, increase the first pass horizontal roller gap of E2 by 0.3mm, and reduce the first pass horizontal roller gap of UF by 0.1mm, which can increase the bottom width by 0.4mm, increase the upper and lower symmetry by 0.2mm, and reduce the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0055] (2) Specifications exceed the upper limit of the standard: ③ When the bottom width specification exceeds the standard upper limit by 0.3mm, reduce the horizontal roller gap of E2 in the first pass by 0.2mm, and increase the horizontal roller gap of UF in the first pass by 0.1mm, which can reduce the bottom width by 0.3mm, reduce the upper and lower symmetry by 0.15mm, and increase the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0056] ④ When the bottom width specification exceeds the standard upper limit of 0.4mm, reduce the first pass horizontal roller gap of E2 by 0.3mm, and increase the first pass horizontal roller gap of UF by 0.1mm, which can reduce the bottom width by 0.4mm, reduce the upper and lower symmetry by 0.2mm, and increase the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0057] The adjustment range is the third preset value: 0.5mm~0.6mm (exceeding / falling short of the standard); Adjust the roller gap value: E2 horizontal roller, E1 horizontal roller, UF bottom vertical roller; Adjustment logic description: For the case where the bottom width specification is seriously substandard, on the basis of the 0.3mm~0.4mm adjustment plan, the E1 three-pass horizontal roll adjustment is required, and the E2 horizontal roll and UF bottom vertical roll form a combined adjustment. The principle is to adjust the hole type of E1 to make the bottom metal of the rolled piece evenly widened and extended, reduce / increase the bottom metal feed of the E2 rolling mill, reduce the processing of the E2 horizontal roll, and finally complete the rail bottom processing by the UF finished hole bottom vertical roll. Figure 8 shown.

[0058] The impact of the adjustment plan: The processing of the E1 horizontal roller changes the incoming metal at the bottom of the rail as a whole, affecting the bottom width specifications, and the adjustment of the E2 horizontal roller directly affects the upper and lower symmetry and bottom width specifications. The processing of the vertical roller at the bottom of the UF finished hole affects the upper leg tip thickness, lower leg tip thickness, and bottom width specifications.

[0059] The third option: (1) Specification is less than the standard lower limit ① When the bottom width specification is less than the standard lower limit of 0.5mm, increase the gap between the 1st, 2nd and 3rd horizontal rollers of E1 by 0.3mm, increase the gap between the 1st horizontal roller of UE2 by 0.3mm, and reduce the gap between the bottom vertical rollers of UF by 0.1mm. This can increase the bottom width by 0.5mm, increase the upper and lower symmetry by 0.25mm, and reduce the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0060] ② When the bottom width specification is less than the standard lower limit of 0.6mm, increase the gap between the 1st, 2nd and 3rd horizontal rollers of E1 by 0.4mm, increase the gap between the 1st horizontal roller of UE2 by 0.3mm, and reduce the gap between the bottom vertical rollers of UF by 0.1mm. This can increase the bottom width by 0.6mm, increase the upper and lower symmetry by 0.3mm, and reduce the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0061] (2) Specifications exceed the upper limit of the standard ① When the bottom width specification exceeds the standard upper limit by 0.5mm, reduce the gap between the 1st, 2nd and 3rd horizontal rollers of E1 by 0.3mm, reduce the gap between the 1st horizontal roller of UE2 by 0.3mm, and increase the gap between the 1st bottom vertical roller of UF by 0.1mm. This can reduce the bottom width by 0.5mm, reduce the upper and lower symmetry by 0.25mm, and increase the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0062] ② When the bottom width specification exceeds the standard upper limit of 0.6mm, reduce the gap between the 1st, 2nd and 3rd horizontal rollers of E1 by 0.4mm, reduce the gap between the 1st horizontal roller of UE2 by 0.3mm, and increase the gap between the bottom vertical rollers of UF by 0.1mm. This can reduce the bottom width by 0.6mm, reduce the upper and lower symmetry by 0.3mm, and increase the upper leg tip thickness and lower leg tip thickness by 0.1mm.

[0063] In some embodiments, see Figure 1, Figure 3 , Fig. 9 , Fig.10 and Fig.11 In response to the deviation of the bottom width exceeding the preset value, and the upper leg tip thickness and the lower leg tip thickness are less than the head thickness, the step of adjusting the horizontal roll or the bottom vertical roll of the rolling mill includes: In response to the deviation of the bottom width exceeding a fourth preset value, adjusting the horizontal rolls of the rolling mill based on a fourth scheme; In response to the deviation of the bottom width exceeding a fifth preset value, adjusting the bottom vertical roll of the rolling mill based on a fifth scheme; In response to the bottom width deviation exceeding a sixth preset value, the bottom vertical rolls of the rolling mill are adjusted based on a sixth scheme.

[0064] The fourth preset value is 0.1mm~0.2mm, and the fourth scheme is a ±0.1mm~0.2mm adjustment scheme; The fifth preset value is 0.3mm~0.4mm, and the fifth scheme is the ±0.3mm~0.4mm adjustment scheme; The sixth preset value is 0.5mm~0.7mm, and the sixth scheme is a ±0.5mm~0.7mm adjustment scheme.

[0065] The adjustment range is the fourth preset value: 0.1mm (exceeding / under standard): Adjusting roller: UF horizontal roller; Adjustment logic description: As a semi-universal mill, the UF mill can also change the bottom metal by adjusting the bottom vertical rolls, such as Fig. 9 It can be seen that the downward pressure of the UF bottom vertical roll changes the specifications of the rolled product.

[0066] The impact of the adjustment plan: Pressing down the UF horizontal roller will reduce the metal at the bottom of the rail, thereby reducing the bottom width. The release of the UF bottom vertical roller is the opposite of the result of pressing down.

[0067] The fourth option: ①Specification is less than the standard lower limit: When the bottom width specification is less than the standard lower limit of 0.1mm, by adjusting the bottom vertical roller of the UF first pass to press down the roller gap by 0.1mm, the bottom width can be increased by 0.1mm, the upper and lower symmetry can be increased by 0.1mm, the upper and lower leg thickness can be reduced by 0.1mm, and the bottom width can be reduced by 0.1mm.

[0068] ②Specifications exceed the upper limit of the standard When the bottom width specification exceeds the standard upper limit by 0.1mm, by adjusting the bottom vertical roller of the first pass of UF to release a 0.1mm roller gap, the bottom width can be reduced by 0.1mm, the upper and lower symmetry can be reduced by 0.1mm, the upper and lower leg thickness can be increased by 0.1mm, and the bottom width can be increased by 0.1mm.

[0069] The adjustment range is the fifth preset value: 0.2mm~0.3mm (exceeding / falling short of the standard); Adjustment roller: UF bottom vertical roller, U2 bottom vertical roller; Adjustment logic description: For the case where the bottom width specification is lower than the standard, it is feasible to adjust the UF bottom vertical roller alone, but it is unreasonable, and the steel will be bent. Therefore, a more reasonable adjustment idea is to adjust the U2 bottom vertical roller in the opposite way to the UF bottom vertical roller, so as to intensify the UF bottom metal processing and balance the overall metal changes, such as Fig.10 The following are the changes and impacts of the adjusted specifications. If the bottom width is lower than the standard, the adjustment idea is the opposite of the adjustment if it exceeds the standard.

[0070] The impact of the adjustment plan: The change in the roll gap value of the U2 bottom vertical roller will cause the amount of metal at the bottom of the rail to change, which in turn affects the bottom width specifications. This is because the adjustment of the bottom vertical roller will directly affect the thickness and width of the rolled product. Specifically, when the U2 bottom vertical roller and the UF bottom vertical roller are adjusted in the opposite direction, the effects of the bottom vertical roller on the bottom width, upper leg tip thickness, and lower leg tip thickness of the rolled product are offset. Due to the change in the bottom metal incoming material, the UF processing changes, thereby exacerbating the change in the bottom width.

[0071] Fifth option: ①Specification is less than the standard lower limit: When the bottom width specification is less than the standard lower limit of 0.2mm, increase the gap between the bottom vertical rollers of U2 in the first pass by 0.2mm, and reduce the gap between the horizontal rollers of UF in the first pass by 0.1mm, which can increase the bottom width by 0.2mm and increase the upper and lower symmetry by 0.1mm.

[0072] When the bottom width specification is less than the standard lower limit of 0.3mm, increase the gap between the bottom vertical rollers of U2 in the first pass by 0.3mm, and reduce the gap between the horizontal rollers of UF in the first pass by 0.2mm, which can increase the bottom width by 0.3mm and increase the upper and lower symmetry by 0.15mm.

[0073] ②Specifications exceed the upper limit of the standard: When the bottom width specification is less than the standard lower limit of 0.2mm, reduce the gap between the bottom vertical rollers of U2 in the first pass by 0.2mm, and increase the gap between the horizontal rollers of UF in the first pass by 0.1mm, which can reduce the bottom width by 0.2mm and reduce the upper and lower symmetry by 0.1mm.

[0074] When the bottom width specification is less than the standard lower limit of 0.3mm, reduce the gap between the bottom vertical rollers of U2 in the first pass by 0.3mm, and increase the gap between the horizontal rollers of UF in the first pass by 0.2mm, which can reduce the bottom width by 0.3mm and reduce the upper and lower symmetry by 0.15mm.

[0075] The adjustment range is the sixth preset value: 0.4mm~0.6mm (exceeding / falling short of the standard); Adjust the roller gap value: UR1 bottom vertical roller, UR2 bottom vertical roller, UF bottom vertical roller; Adjustment logic description: For the case where the bottom width specification is seriously substandard, on the basis of the 0.4mm~0.6mm adjustment plan, the UR1 bottom vertical roller adjustment is required for three passes, and the UR2 bottom vertical roller is adjusted in the same direction, which greatly changes the metal input to the UF rolling and intensifies the metal processing of the UF bottom vertical roller. Fig.11 shown.

[0076] The impact of the adjustment plan: UR1 and UR2 bottom vertical rollers release the incoming metal at the bottom of the rail, which increases the bottom metal, and UF bottom vertical rollers press down to increase the metal processing to increase the ductility and width of the rolled product. It directly affects the upper and lower symmetry and bottom width specifications.

[0077] The sixth option: ①Specification is less than the standard lower limit: When the bottom width specification is less than the standard lower limit of 0.4mm, increase the bottom vertical roller gap of UR1 in the 1st, 2nd and 3rd passes by 0.4mm, increase the horizontal roller gap of UR2 in the 1st pass by 0.3mm, and reduce the bottom vertical roller gap of UF in the 1st pass by 0.2mm, which can increase the bottom width by 0.4mm and increase the upper and lower symmetry by 0.2mm.

[0078] When the bottom width specification is less than the standard lower limit of 0.5mm, increase the bottom vertical roller gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, increase the horizontal roller gap of UR2 in the 1st pass by 0.5mm, and reduce the bottom vertical roller gap of UF in the 1st pass by 0.2mm, which can increase the bottom width by 0.5mm and increase the upper and lower symmetry by 0.25mm.

[0079] When the bottom width specification is less than the standard lower limit of 0.6mm, increase the bottom vertical roller gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, increase the horizontal roller gap of UR2 in the 1st pass by 0.5mm, and reduce the bottom vertical roller gap of UF in the 1st pass by 0.3mm, which can increase the bottom width by 0.6mm and increase the upper and lower symmetry by 0.3mm.

[0080] ②Specifications exceed the upper limit of the standard: When the bottom width specification exceeds the standard upper limit of 0.4mm, reduce the bottom vertical roller gap of UR1 in the 1st, 2nd and 3rd passes by 0.4mm, reduce the horizontal roller gap of UR2 in the 1st pass by 0.3mm, and increase the bottom vertical roller gap of UF in the 1st pass by 0.2mm, which can reduce the bottom width by 0.4mm and reduce the upper and lower symmetry by 0.2mm.

[0081] When the bottom width specification exceeds the standard upper limit by 0.5mm, reduce the bottom vertical roller gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, reduce the horizontal roller gap of UR2 in the 1st pass by 0.5mm, and increase the bottom vertical roller gap of UF in the 1st pass by 0.2mm, which can reduce the bottom width by 0.5mm and reduce the upper and lower symmetry by 0.25mm.

[0082] When the bottom width specification exceeds the standard upper limit of 0.6mm, reduce the bottom vertical roller gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, reduce the horizontal roller gap of UR2 in the 1st pass by 0.5mm, and increase the bottom vertical roller gap of UF in the 1st pass by 0.3mm, which can reduce the bottom width by 0.6mm and reduce the upper and lower symmetry by 0.3mm.

[0083] In some embodiments, see Figure 1 The steps of obtaining the historical data of rail production through VR simulation include: Obtain information about the rails and their surroundings, and use VR technology to simulate a virtual rail environment; In a virtual environment, the rail adjustment process under different conditions is simulated, and various parameters and results of the simulation process are recorded as historical data.

[0084] Virtual reality technology can simulate various complex railway environments, including different terrains, climates, soil conditions, etc., so as to more comprehensively evaluate the applicability of rail adjustment schemes under different conditions. By simulating the rail adjustment process under different conditions, the adjustment strategy can be optimized, the trial and error cost in actual operation can be reduced, and the adjustment accuracy can be improved. It provides a safe and risk-free simulation environment, allowing operators to perform multiple simulations in a virtual environment, thereby reducing human errors in actual operations. Railway maintenance operations often involve high-risk environments such as high voltage. Virtual reality technology can provide a safe simulation environment, allowing operators to simulate without being exposed to actual risks, thereby reducing safety risks. By simulating different railway environments and conditions, the performance and applicability of the product can be more comprehensively evaluated, thereby accelerating the product research and development process.

[0085] In some embodiments, see Figure 1 The steps of obtaining historical data and building an expert experience model include: The historical bottom width specifications of each team are extracted from the historical data; Analyze the distribution of historical bottom width specification deviation values, rank them according to the control effects of historical bottom width specifications, and use the teams whose rankings exceed the threshold as expert knowledge; An expert experience model is constructed based on deviation value distribution and expert knowledge.

[0086] By analyzing the bottom width deviation values ​​in historical data, the team's strengths and weaknesses in controlling the bottom width can be identified. The expert experience model can provide more precise guidance based on these deviation values, helping the team to better control the bottom width specifications during the production process, thereby improving the production quality of rails. With the help of expert knowledge, the production process can be optimized, unnecessary steps and waste can be reduced, and production efficiency can be improved. By learning from the practices of excellent teams, other teams can also quickly improve their own production levels.

[0087] Precise bottom width specification control helps reduce scrap and rework, thereby reducing production costs. The expert experience model can predict potential bottom width specification problems and take corrective measures in advance to avoid waste in the production process. After optimizing the production process, the utilization rate of materials will be improved, further reducing production costs. By learning from the experience of excellent teams, the team can use materials more reasonably and reduce waste.

[0088] In some embodiments, see Figure 1 , the method further comprises: According to different specification deviation values, corresponding adjustment plans are established in the expert experience model.

[0089] Through the expert experience model, the most appropriate adjustment plan can be quickly matched for different specification deviation values. This precise matching method reduces the process of manual trial and error and improves the accuracy and efficiency of adjustment. With the corresponding adjustment plan, the production process can be smoother, reducing production interruptions and delays caused by specification deviations. Improve overall production efficiency and reduce production costs.

[0090] The adjustment plan in the expert experience model is based on historical data and expert knowledge, and is unified and standardized. This ensures that the same specification deviation value can be handled consistently in different shifts and time periods, thereby improving the overall quality of the product. By implementing standardized adjustment plans, quality fluctuations caused by human factors can be reduced. This helps to improve product stability and reliability and meet customer expectations and needs.

[0091] The expert experience model summarizes and refines the adjustment experience and knowledge of excellent teams. New employees or employees with less experience can quickly master the correct adjustment methods and improve work efficiency and quality by learning and referring to the adjustment plans in the model. As the production process continues, new specification deviation values ​​and adjustment plans will continue to emerge. The expert experience model can be continuously updated and improved, incorporating new experience and knowledge into it, forming a virtuous circle and promoting experience accumulation and technological progress.

[0092] In some embodiments, see Figure 1 In response to the upper leg tip thickness, lower leg tip thickness and head thickness exceeding the deviation at the same time, the percentages of the upper leg tip thickness, lower leg tip thickness and head thickness exceeding the deviation are compared, and the part with the larger exceeding proportion is adjusted first.

[0093] By comparing the percentage of the upper leg tip thickness, lower leg tip thickness and head thickness, it is possible to quickly identify which part has the most serious deviation. It is possible to correct deviations more quickly and improve overall adjustment efficiency. It is possible to avoid repeated attempts and adjustments between multiple deviation parts, thereby reducing trial and error costs. It helps to reduce the number of scraps caused by deviations. This is of great significance for improving product quality and reducing production costs.

[0094] The present invention proposes a system for adjusting the bottom width of rails. Figure 2 ,include: A construction unit 100 is configured to obtain historical data of rail production through VR simulation, and to construct an expert experience model based on the historical data; A simulation unit 200, configured to integrate an expert experience model in a simulation platform and simulate a working condition of rail adjustment; A first adjustment unit 300 is configured to adjust the horizontal roll and the bottom vertical roll of the rolling mill in response to the deviation of the bottom width exceeding a preset value and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness; The second adjustment unit 400 is configured to adjust the horizontal roll or the bottom vertical roll of the rolling mill in response to the bottom width deviation exceeding a preset value and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness.

[0095] The present invention is a model building and adjustment method based on expert experience, which is specifically aimed at the deviation problem of the bottom width of the rail. The implementation of this scheme not only ensures the stability of the rolling process, but also significantly improves the control accuracy of the bottom width of the rail. By adopting this scheme, the timeliness of the adjustment can be improved and the standardization of the rolling adjustment can be ensured. This not only solves the problem of low calculation efficiency in manual adjustment, but also avoids errors caused by human factors. In addition, the scheme effectively reduces the fluctuations in the control of product bottom width specifications between teams, thereby improving the consistency and reliability of the entire production process. This adjustment scheme based on data and experience provides a more scientific and systematic method for rail production through precise calculation and optimization. It not only improves production efficiency, but also ensures high standards of product quality.

[0096] In some embodiments, see Fig.12 and Fig.13 , the following takes the 60 heavy rail as an example to introduce the implementation of the plan: Get the rail size, according to Fig.12 Determine whether the rail bottom width specification needs to be adjusted.

[0097] Input sampling data, and the rest of the specifications are in standard internal control. The bottom width needs to be reduced by 0.1mm. Click Calculate to generate a solution: press down the horizontal roller gap of E2 for the first pass by 0.1mm, and press down the horizontal roller gap of UF for the first pass by 0.1mm. The impact values ​​are: reduce the bottom width by 0.2mm, reduce the head width by 0.1mm, and increase the rail crown fullness.

[0098] Send the model calculation plan, modify the actual roll gap value, and then sample the next roll. The result is as follows Fig.13 shown.

[0099] Analysis of the sampled data after adjustment: The issued plan has a significant change in the bottom width specification, and the impact on the bottom width specification is also The present invention improves adjustment accuracy: by utilizing the expert experience model, the adjustment amount of the rail bottom width can be more accurately grasped, the adjustment error can be reduced, and the rail bottom width can be made to better meet the internal control standard.

[0100] Enhance the stability and consistency of adjustment: Avoid the fluctuation of results caused by individual differences and different operating habits during manual adjustment. Regardless of the production conditions, it can maintain a relatively stable and consistent adjustment effect.

[0101] Improve production efficiency: Real-time adjustment and correction can save a lot of time, eliminating the need for repeated measurements and trial adjustments.

[0102] Reduce labor costs: Reduce reliance on a large number of manual operations and calculations, and reduce labor intensity. Adjustment work that may have required multiple workers to collaborate in the past can now be partially or even fully automated through the model.

[0103] Optimize product quality: Stable rail bottom width specifications help improve the overall quality of products and enhance their competitiveness in the market.

[0104] Based on the same inventive concept, according to another aspect of the present invention, Fig.14 As shown, an embodiment of the present invention further provides a computer device 30, which includes a processor 310 and a memory 320. The memory 320 stores a computer program 321 that can be run on the processor. When the processor 310 executes the program, the steps of the above method are performed.

[0105] Based on the same inventive concept, according to another aspect of the present invention, Fig.15 As shown, an embodiment of the present invention further provides a computer-readable storage medium 40, which stores a computer program 410 for executing the above method when executed by a processor.

[0106] The embodiment of the present invention may also include a corresponding computer device. The computer device includes a memory, at least one processor, and a computer program stored in the memory and executable on the processor, and the processor executes any one of the above methods when executing the program.

[0107] The memory, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules in the embodiments of the present application. The processor executes various functional applications and data processing of the device by running the non-volatile software programs, instructions and modules stored in the memory, that is, implementing the above method.

[0108] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In an embodiment, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the local module via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0109] Finally, it should be noted that a person of ordinary skill in the art can understand that all or part of the schematic diagrams in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include schematic diagrams of the embodiments of the above-mentioned methods. Among them, the storage medium of the program can be a disk, an optical disk, a read-only storage memory (ROM) or a random access memory (RAM), etc. The above-mentioned computer program embodiments can achieve the same or similar effects as the corresponding above-mentioned arbitrary method embodiments.

[0110] It will also be appreciated by those skilled in the art that various exemplary logic blocks, modules, circuits and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, a general description has been given to the functions of various schematic components, blocks, modules, circuits and steps. Whether this function is implemented as software or hardware depends on specific applications and the design constraints imposed on the entire system. Those skilled in the art can implement the function in various ways for each specific application, but this implementation decision should not be interpreted as causing a departure from the disclosed scope of the embodiments of the present invention.

[0111] The above are exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications may be made without departing from the scope of the embodiments disclosed in the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. The serial numbers of the embodiments disclosed in the above embodiments of the present invention are for description only and do not represent the advantages and disadvantages of the embodiments. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0112] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0113] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A method for adjusting rail bottom width, characterized in that: include: Obtain historical data of rail production through VR simulation, and build an expert experience model based on the historical data; Integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment; In response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, the horizontal roll and the bottom vertical roll of the rolling mill are adjusted; In response to the bottom width deviation exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, the horizontal roll or the bottom vertical roll of the rolling mill is adjusted.

2. A method for adjusting rail bottom width according to claim 1, characterized in that: In response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, the step of adjusting the horizontal roll and the bottom vertical roll of the rolling mill comprises: In response to the deviation of the bottom width exceeding a first preset value, adjusting a horizontal roll of the rolling mill based on a first scheme; In response to the deviation of the bottom width exceeding a second preset value, adjusting the horizontal rolls and the bottom vertical rolls of the rolling mill based on a second scheme; In response to the deviation of the bottom width exceeding a third preset value, the horizontal rolls and the bottom vertical rolls of the rolling mill are adjusted based on a third scheme.

3. The method for adjusting rail bottom width according to claim 1, characterized in that: In response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, the step of adjusting the horizontal roll or the bottom vertical roll of the rolling mill comprises: In response to the deviation of the bottom width exceeding a fourth preset value, adjusting the horizontal rolls of the rolling mill based on a fourth scheme; In response to the deviation of the bottom width exceeding a fifth preset value, adjusting the bottom vertical roll of the rolling mill based on a fifth scheme; In response to the bottom width deviation exceeding a sixth preset value, the bottom vertical rolls of the rolling mill are adjusted based on a sixth scheme.

4. A method for adjusting rail bottom width according to claim 1, characterized in that: The step of obtaining historical data of rail production through VR simulation includes: Obtain information about the rails and their surroundings, and use VR technology to simulate a virtual rail environment; In a virtual environment, the rail adjustment process under different conditions is simulated, and various parameters and results of the simulation process are recorded as historical data.

5. The method for adjusting rail bottom width according to claim 1, characterized in that: The step of constructing an expert experience model based on the historical data includes: The historical bottom width specifications of each team are extracted from the historical data; Analyze the distribution of historical bottom width specification deviation values, rank them according to the control effects of historical bottom width specifications, and use the teams whose rankings exceed the threshold as expert knowledge; An expert experience model is constructed based on deviation value distribution and expert knowledge.

6. A method for adjusting rail bottom width according to claim 5, characterized in that: The method also includes: According to different specification deviation values, corresponding adjustment plans are established in the expert experience model.

7. A method for adjusting rail bottom width according to claim 1, characterized in that: In response to the upper leg tip thickness, lower leg tip thickness and head thickness simultaneously exceeding the deviation, the percentages of the upper leg tip thickness, lower leg tip thickness and head thickness exceeding the deviation are compared, and the part with the larger exceeding proportion is adjusted preferentially.

8. A system for adjusting the bottom width of a rail, characterized in that: include: A construction unit configured to obtain historical data of rail production through VR simulation and to construct an expert experience model based on the historical data; A simulation unit configured to integrate an expert experience model in a simulation platform and simulate a working condition of rail adjustment; A first adjustment unit is configured to adjust the horizontal roll and the bottom vertical roll of the rolling mill in response to the deviation of the bottom width exceeding a preset value and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness; The second adjustment unit is configured to adjust the horizontal roll or the bottom vertical roll of the rolling mill in response to the bottom width deviation exceeding a preset value and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness.

9. A computer device comprising: at least one processor; and a memory storing a computer program executable on the processor, wherein the processor executes the steps of a method for adjusting the bottom width of a rail as claimed in any one of claims 1 to 7 when executing the program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for adjusting the bottom width of a rail as claimed in any one of claims 1 to 7 are performed.

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