A method for adjusting rolling mill rail base and archway using a laser tracker

Abstract

This invention relates to a method for adjusting rolling mill rail supports and arches using a laser tracker, belonging to the technical field of rolling mill equipment installation methods. The technical solution of this invention is as follows: data is extracted, benchmark points are checked, reverse station layout is performed, coarse and fine adjustments of the rail supports are made using a laser tracker, then the verticality of the rolling mill arches is measured, and the arch position is adjusted according to the measurement data until it meets the installation standards. Then, the anchor bolts are gradually tightened until they meet the design values. The beneficial effects of this invention are: it can quickly and accurately obtain vertical deviation data of a single arch along the rolling line and along the equipment line, and can also obtain the misalignment difference between two arches with an accuracy down to the micrometer level. This improves work efficiency while reducing the number of repeated adjustments, thus accurately and efficiently completing the installation of rolling mill rail supports and arches, improving work efficiency while reducing the number of repeated adjustments.

Description

Technical Field

[0001] This invention relates to a method for adjusting the rolling mill rail base and archway using a laser tracker, belonging to the technical field of rolling mill equipment installation methods. Background Technology

[0002] For the installation of the 1580 hot rolling mill equipment, the task requires completing the installation in the shortest possible time, necessitating not only 24-hour shifts but also improved work efficiency. To enhance the installation accuracy and efficiency of the rolling mill equipment, the mill rail base inspection elevation should be approximately ±0.1mm, the centerline control 0.1mm, and the horizontal control 0.03mm / m; the verticality of a single mill arch should be less than 0.1mm, and the misalignment deviation between two arches should be less than 0.1mm.

[0003] Traditional precision testing methods involve using a total station to mark points, followed by manual measurement using a wire rope and micrometer rod. This method suffers from low accuracy and efficiency. Initially, the rolling mill rail base installation site uses a combination of a total station and a prism. Points are marked below and wire ropes are used for stringing; surveyors then use micrometer rods for measurement. However, this approach is labor-intensive, has poor repeatability, and is susceptible to the influence of the surveyor's skill level and errors caused by long intervals between stringing operations. The adjustment and acceptance procedures for the rolling mill archway also face the same problems. Summary of the Invention

[0004] The purpose of this invention is to provide a method for adjusting rolling mill rail supports and arches using a laser tracker. By employing a laser tracker for measurement, it is possible to quickly and accurately obtain vertical deviation data of a single arch along the rolling line and along the equipment line, as well as the misalignment difference between two arches, with an accuracy down to the micrometer level. This improves work efficiency while reducing the number of repeated adjustments, thereby accurately and efficiently completing the installation of rolling mill rail supports and arches, effectively solving the aforementioned problems in the background art.

[0005] The technical solution of the present invention is: a method for adjusting the rolling mill rail base and archway using a laser tracker, comprising the following steps:

[0006] S1. Data Extraction: Analyze the drawings, extract the mill installation data requirements, determine the acceptance method after the installation and adjustment are completed, and formulate corresponding measurement and adjustment methods based on the acceptance method;

[0007] S2. Verification of reference points: Based on the reference points of the mill center line and rolling center line set by the line setter in the previous process, use a laser tracker to verify the reference points;

[0008] S3. Reversal point layout: Use a laser tracker to measure the center line of the rolling mill and the center point of the rolling line, establish a measurement coordinate system, and arrange reversal points on the operating side and the transmission side of the rolling mill;

[0009] S4. Coarse and fine adjustment of the rail base: After the grouting construction of the rolling mill rail base is completed and the installation requirements are met, the rail base is hoisted to the installation position by the overhead crane in the plant and coarse and fine adjustment is performed using a laser tracker; after the rail base is adjusted and positioned, each arch of the rolling mill is placed in the order of first the drive side and then the operation side according to the predetermined rolling mill installation sequence, the upper crossbeam and the lower crossbeam are connected, and then the verticality of the rolling mill arch is measured.

[0010] S5. Acceptance of track and seat: Report to the project department and conduct acceptance work until it passes the acceptance test;

[0011] S6. Archway installation and adjustment: Verticality measurement includes two directions: rolling direction and mill direction. A laser tracker is used to simultaneously detect the verticality in both directions, and the misalignment error of the two archways in the rolling direction is also detected. The position of the archways is adjusted according to the measurement data until it meets the installation standards. Then, the anchor bolts are gradually tightened until they meet the design values.

[0012] S7. Organize the acceptance of the archway: Report to the project department and carry out the acceptance work until it passes the acceptance.

[0013] In step S2, before the equipment is installed, 16 permanent reference points are reserved by the civil engineering party in the finishing mill area, including two points in the direction of the rolling line, one at the entrance position and one at the exit position; and one on each of the north and south sides of the seven rolling mills. All reference points are checked with a laser tracker until they all meet the requirements before the subsequent installation work begins.

[0014] In step S3, two sets of reverse stations are arranged at appropriate positions on the operating side and the transmission side of the rolling mill. According to the principle of reverse station arrangement, the reverse stations are arranged to ensure that they cover the rolling mill installation area and there is an elevation difference between the reverse stations. The south reverse station is mainly used for measurement. When there is an area that cannot be measured by laser due to obstruction, the north reverse station is used for measurement and adjustment.

[0015] In step S4, the steps for coarse and fine adjustment of the rail base are as follows:

[0016] S41. Leveling and alignment, with elevation controlled at +0.3mm and centerline controlled at 1mm;

[0017] S42 and M80 anchor bolts are pressurized to 20%, all wedges are fully shimmed, and the level is adjusted. The elevation is controlled at +0.25mm, the centerline is controlled at 0.1mm, the difference between B1 and B2 is 0.03mm, the difference between A1 and A2 is 0.05mm, and the horizontal level is controlled at 0.03mm / m.

[0018] S43 and M80 anchor bolts are pressurized to 50%, with elevation controlled at +0.2mm and centerline controlled at 0.1mm. The difference between B1 and B2 is 0.03mm, the difference between A1 and A2 is 0.05mm, and the horizontal control is 0.03mm / m.

[0019] For S44 and M100 anchor bolts, first pressurize to 20%, then pressurize to 50%, check the elevation +0.15mm, control the center line at 0.1mm, with the difference between B1 and B2 at 0.03mm, the difference between A1 and A2 at 0.05mm, and the horizontal control at 0.03mm / m.

[0020] S45. First, press the M80 anchor bolts to 70% pressure, and press the M100 anchor bolts to 70% pressure. Check the elevation +0.1mm, control the center line at 0.1mm, with the difference between B1 and B2 being 0.03mm, the difference between A1 and A2 being 0.05mm, and the horizontal control at 0.03mm / m.

[0021] In step S42, the M80 anchor bolts are pressurized to 20%, and the flat iron is checked to see if it is compacted and if there are any gaps. If not, grinding and chiseling are performed, and the elevation is such that the positions of the four M100 bolts are within 0.1mm of each other.

[0022] In step S43, check whether the flat iron is compacted and whether there is any gap. If the dial gauge reading of the M80 bolt preload is 20%-50% and there is no change, it means that the shim is compacted. Otherwise, grind and chisel it. The elevation is that the position of the four M100 bolts is within 0.1mm.

[0023] In step S44, check whether the flat iron is compacted and whether there is any gap. When the preload of the M100 bolt is 0-20%, the elevation drops by 0.05mm. When the dial gauge reading is 20%-50% and there is no change, it means that the shim is compacted. Otherwise, grind and chisel it. The elevation is that the position of the four M100 bolts is within 0.1mm of each other.

[0024] In step S45, check whether the flat iron is compacted and whether there are gaps. If there is no change when the anchor is tightened and pressure is applied, it means that the shim is compacted. Otherwise, grind and chisel it. The elevation is that the position of the four M100 bolts is within 0.1mm of each other.

[0025] In step S6, the verticality measurement and adjustment steps are as follows: After the single-piece rolling mill stand is installed on the rail base, the verticality of the stand is adjusted. First, the rolling direction, i.e., the X direction, is adjusted. Measuring points one, two, three, and four are selected on the stand. The four measuring points are on the same plane in the design drawing. The Z-value deviation between measuring point one and measuring point three, and the Z-value difference between measuring point two and measuring point four, indicate the verticality of the stand in the Z direction. The deviation value is adjusted to meet the installation requirements. The same steps are used to adjust the other stand.

[0026] Next, in the mill direction (Z-axis), select measuring points A, B, C, and D on a single archway. These four measuring points are on the same plane in the design drawing. The X-value deviation between measuring points A and C, and between measuring points B and D, indicates the verticality of the archway in the X-axis. Adjust the deviation values ​​to meet the installation requirements. The other archway is adjusted using the same steps.

[0027] After the two arches of a rolling mill are installed on the rail base, the X-axis deviation of measuring points A and B, and measuring points C and D can reflect the misalignment of the two arches.

[0028] The same coordinate system is used in the coarse and fine adjustment of each rolling mill rail base and the installation and adjustment of the archway. The coordinate system is obtained based on the rolling line and the equipment line. The positive X direction is along the exit direction of the rolling line, the positive Z direction along the equipment line points south, and the positive Y direction points upward.

[0029] The beneficial effects of this invention are: by using a laser tracker for measurement, it is possible to quickly and accurately obtain the vertical deviation data of a single archway along the rolling line and along the equipment line, as well as the misalignment difference between two archways, with an accuracy down to the micrometer. This improves work efficiency while reducing the number of repeated adjustments, thereby accurately and efficiently completing the installation of the rolling mill rail base and archway, improving work efficiency while reducing the number of repeated adjustments. Attached Figure Description

[0030] Figure 1 This is a model diagram of the F4 rolling mill archway after installation according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the distribution of measurement stations in the finishing mill area according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the measuring coordinate system for the installation of the rail base and the rolling mill archway of the present invention;

[0033] Figure 4 This is a schematic diagram of the dimensional distribution for track mounting and acceptance according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram showing the distribution of measuring points on both sides of the rolling line direction and the equipment line direction according to an embodiment of the present invention;

[0035] In the diagram: 1. Rolling mill centerline; 2. Rolling centerline; 3. West permanent reference point; 4. East permanent reference point; 5. South permanent reference point; 6. North permanent reference point; 7. Drive side; 8. Operating side; 9. Entrance; 10. Exit; 11. North reversing station 1; 12. North reversing station 2; 13. North reversing station 3; 14. North reversing station 4; 15. North reversing station 5; 16. North reversing station 6; 17. North reversing station 7; 18. North reversing station 8; 19. North reversing station 9 North Reversing Station 110, South Reversing Station 1 21, South Reversing Station 2 22, South Reversing Station 3 23, South Reversing Station 4 24, South Reversing Station 5 25, South Reversing Station 6 26, South Reversing Station 7 27, South Reversing Station 8 28, South Reversing Station 9 29, South Reversing Station 10 210, South Reversing Station 11 211, Equipment Line Direction 31, Rolling Line Exit Direction 32, Measuring Point 1 41, Measuring Point 2 42, Measuring Point 3 43, Measuring Point 4 44. Detailed Implementation

[0036] To make the purpose, technical solutions, and advantages of the invention's embodiments clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only a small part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0037] A method for adjusting the rolling mill rail base and archway using a laser tracker includes the following steps:

[0038] S1. Data Extraction: Analyze the drawings, extract the mill installation data requirements, determine the acceptance method after the installation and adjustment are completed, and formulate corresponding measurement and adjustment methods based on the acceptance method;

[0039] S2. Verification of reference points: Based on the reference points of the mill center line and rolling center line set by the line setter in the previous process, use a laser tracker to verify the reference points;

[0040] S3. Reversal point layout: Use a laser tracker to measure the center line of the rolling mill and the center point of the rolling line, establish a measurement coordinate system, and arrange reversal points on the operating side and the transmission side of the rolling mill;

[0041] S4. Coarse and fine adjustment of the rail base: After the grouting construction of the rolling mill rail base is completed and the installation requirements are met, the rail base is hoisted to the installation position by the overhead crane in the plant and coarse and fine adjustment is performed using a laser tracker; after the rail base is adjusted and positioned, each arch of the rolling mill is placed in the order of first the drive side and then the operation side according to the predetermined rolling mill installation sequence, the upper crossbeam and the lower crossbeam are connected, and then the verticality of the rolling mill arch is measured.

[0042] S5. Acceptance of track and seat: Report to the project department and conduct acceptance work until it passes the acceptance test;

[0043] S6. Archway installation and adjustment: Verticality measurement includes two directions: rolling direction and mill direction. A laser tracker is used to simultaneously detect the verticality in both directions, and the misalignment error of the two archways in the rolling direction is also detected. The position of the archways is adjusted according to the measurement data until it meets the installation standards. Then, the anchor bolts are gradually tightened until they meet the design values.

[0044] S7. Organize the acceptance of the archway: Report to the project department and carry out the acceptance work until it passes the acceptance.

[0045] In step S2, before the equipment is installed, 16 permanent reference points are reserved by the civil engineering party in the finishing mill area, including two points in the direction of the rolling line, one at the entrance position and one at the exit position; and one on each of the north and south sides of the seven rolling mills. All reference points are checked with a laser tracker until they all meet the requirements before the subsequent installation work begins.

[0046] In step S3, two sets of reverse stations are arranged at appropriate positions on the operating side and the transmission side of the rolling mill. According to the principle of reverse station arrangement, the reverse stations are arranged to ensure that they cover the rolling mill installation area and there is an elevation difference between the reverse stations. The south reverse station is mainly used for measurement. When there is an area that cannot be measured by laser due to obstruction, the north reverse station is used for measurement and adjustment.

[0047] In step S4, the steps for coarse and fine adjustment of the rail base are as follows:

[0048] S41. Leveling and alignment, with elevation controlled at +0.3mm and centerline controlled at 1mm;

[0049] S42 and M80 anchor bolts are pressurized to 20%, all wedges are fully shimmed, and the level is adjusted. The elevation is controlled at +0.25mm, the centerline is controlled at 0.1mm, the difference between B1 and B2 is 0.03mm, the difference between A1 and A2 is 0.05mm, and the horizontal level is controlled at 0.03mm / m.

[0050] S43 and M80 anchor bolts are pressurized to 50%, with elevation controlled at +0.2mm and centerline controlled at 0.1mm. The difference between B1 and B2 is 0.03mm, the difference between A1 and A2 is 0.05mm, and the horizontal control is 0.03mm / m.

[0051] For S44 and M100 anchor bolts, first pressurize to 20%, then pressurize to 50%, check the elevation +0.15mm, control the center line at 0.1mm, with the difference between B1 and B2 at 0.03mm, the difference between A1 and A2 at 0.05mm, and the horizontal control at 0.03mm / m.

[0052] S45. First, press the M80 anchor bolts to 70% pressure, and press the M100 anchor bolts to 70% pressure. Check the elevation +0.1mm, control the center line at 0.1mm, with the difference between B1 and B2 being 0.03mm, the difference between A1 and A2 being 0.05mm, and the horizontal control at 0.03mm / m.

[0053] In step S42, the M80 anchor bolts are pressurized to 20%, and the flat iron is checked to see if it is compacted and if there are any gaps. If not, grinding and chiseling are performed, and the elevation is such that the positions of the four M100 bolts are within 0.1mm of each other.

[0054] In step S43, check whether the flat iron is compacted and whether there is any gap. If the dial gauge reading of the M80 bolt preload is 20%-50% and there is no change, it means that the shim is compacted. Otherwise, grind and chisel it. The elevation is that the position of the four M100 bolts is within 0.1mm.

[0055] In step S44, check whether the flat iron is compacted and whether there is any gap. When the preload of the M100 bolt is 0-20%, the elevation drops by 0.05mm. When the dial gauge reading is 20%-50% and there is no change, it means that the shim is compacted. Otherwise, grind and chisel it. The elevation is that the position of the four M100 bolts is within 0.1mm of each other.

[0056] In step S45, check whether the flat iron is compacted and whether there are gaps. If there is no change when the anchor is tightened and pressure is applied, it means that the shim is compacted. Otherwise, grind and chisel it. The elevation is that the position of the four M100 bolts is within 0.1mm of each other.

[0057] In step S6, the verticality measurement and adjustment steps are as follows: After the single-piece rolling mill stand is installed on the rail base, the verticality of the stand is adjusted. First, the rolling direction, i.e., the X direction, is adjusted. Measuring points one, two, three, and four are selected on the stand. The four measuring points are on the same plane in the design drawing. The Z-value deviation between measuring point one and measuring point three, and the Z-value difference between measuring point two and measuring point four, indicate the verticality of the stand in the Z direction. The deviation value is adjusted to meet the installation requirements. The same steps are used to adjust the other stand.

[0058] Next, in the mill direction (Z-axis), select measuring points A, B, C, and D on a single archway. These four measuring points are on the same plane in the design drawing. The X-value deviation between measuring points A and C, and between measuring points B and D, indicates the verticality of the archway in the X-axis. Adjust the deviation values ​​to meet the installation requirements. The other archway is adjusted using the same steps.

[0059] After the two arches of a rolling mill are installed on the rail base, the X-axis deviation of measuring points A and B, and measuring points C and D can reflect the misalignment of the two arches.

[0060] The same coordinate system is used in the coarse and fine adjustment of each rolling mill rail base and the installation and adjustment of the archway. The coordinate system is obtained based on the rolling line and the equipment line. The positive X direction is along the exit direction of the rolling line, the positive Z direction along the equipment line points south, and the positive Y direction points upward. Example

[0061] 1. Based on the reference points for the mill center line and rolling center line set by the line setter of the previous process, the reference points are checked using a laser tracker. The current mill installation sequence uses the intersection of the mill center line and rolling line of the 4th mill, i.e., F4 mill, as the installation reference for the entire mill area.

[0062] 2. Use a laser tracker to measure the centerline and rolling line center point of the F4 rolling mill, establish a measurement coordinate system, and arrange two sets of reverse stations at appropriate locations on the operating side and drive side of the rolling mill, with 8-10 reverse stations in each set. According to the principle of reverse station arrangement, try to ensure that the reverse stations cover the rolling mill installation area, and there should be an elevation difference between the reverse stations.

[0063] 3. After the grouting of the rolling mill rail base (equipment rail base) is completed and meets the installation requirements, the rail base is hoisted to the installation position by the plant crane and coarsely adjusted using a laser tracker. Subsequent measurements and adjustments are made using a guide rail for leveling and alignment, a level instrument for the rail base elevation, and a laser tracker for measuring and adjusting the remaining horizontal dimensions of the rail base and the dimensions of the archway.

[0064] 4. Rail adjustment:

[0065] 1) Leveling and alignment: Each rolling mill rail base has four sets of wedges; the elevation of each set is controlled at approximately +0.3mm, and the center line is controlled at approximately 1mm.

[0066] 2) Tighten the M80 anchor bolts to 20%, fully shim the wedges, level and align, controlling the elevation to approximately +0.25mm. For measuring and adjusting the horizontal dimensions of the rolling mill rail base, first establish a coordinate system for the installation of the rail base and the rolling mill archway, such as... Figure 3 As shown, the centerline is controlled at 0.1mm (B1-B2 difference 0.03mm, A1-A2 difference 0.05mm), and the horizontal control is 0.03mm / m.

[0067] Precautions: Check whether the flat iron is firmly pressed and whether there are gaps, grind and chisel it firmly; the difference in elevation (position of 4 M100 bolts) should be within 0.1mm.

[0068] 3) Pressurize the M80 anchor bolts to 50%, control the elevation to approximately +0.2mm, control the centerline to 0.1mm (B1-B2 difference 0.03mm, A1-A2 difference 0.05mm), and control the level to 0.03mm / m.

[0069] Precautions: Check whether the flat iron is compacted and whether there are gaps (if the dial gauge reading of the M80 bolt preload is 20%-50% and there is no change, it means that the shim is compacted), grind and chisel it; the elevation difference (position of the 4 M100 bolts) should be within 0.1mm.

[0070] 4) For M100 anchor bolts, first pressurize to 20%, then pressurize to 50%, check the elevation to about +0.15mm, control the center line to 0.1mm (B1-B2 difference 0.03mm, A1-A2 difference 0.05mm), and control the level to 0.03mm / m.

[0071] Precautions: Check whether the flat iron is compacted and whether there are gaps (M100 bolt preload 0-20% (elevation drops by 0.05mm), 20%-50% dial gauge reading no change indicates the shim is compacted), grind and chisel compact; the elevation (position of 4 M100 bolts) should be within 0.1mm of each other.

[0072] 5) First, pressurize the M80 anchor bolts to 70% and the M100 anchor bolts to 70%. Check the elevation to be approximately +0.1mm, control the center line to 0.1mm (B1-B2 difference 0.03mm, A1-A2 difference 0.05mm), and control the level to 0.03mm / m.

[0073] Precautions: Check whether the flat iron is compacted and whether there are gaps (there should be no change when the anchor is tightened and pressure is applied), grind and chisel to compact it; the difference in elevation (position of the 4 M100 bolts) should be within 0.1mm.

[0074] 5. After the rail base adjustment and positioning are completed, acceptance testing will be conducted. The acceptance dimensions are as follows: Figure 4 After each mill rail base passes inspection, each mill archway is installed one by one according to the predetermined mill installation sequence, starting with the drive side and then the operating side. The upper and lower crossbeams are then connected, and the verticality of the mill archway is measured.

[0075] 6. Verticality measurement is divided into rolling direction and mill direction. Using a laser tracker, a suitable location can be selected at the construction site to simultaneously detect the verticality in both directions. It can also detect the misalignment error of the two mill plates in the rolling direction.

[0076] 1) Verticality measurement is divided into rolling direction and mill direction. Using a laser tracker, a suitable location can be selected at the construction site to simultaneously detect the verticality in both directions. It can also detect the misalignment error of the two mill plates in the rolling direction.

[0077] 2) such as Figure 5After the single-piece rolling mill stand is installed on the rail base, adjust the stand's verticality: First, in the rolling direction (X-direction), select measuring points one, two, three, and four on the stand (the measuring points are on the same plane in the design drawing). The Z-value deviation between measuring points one and three, and the Z-value difference between measuring points two and four, indicates the stand's verticality in the Z-direction; adjust the deviation values ​​to meet the installation requirements. The other stand is adjusted using the same steps.

[0078] 3) Next, in the mill direction (Z-axis), select measuring points A, B, C, and D on the single archway (the measuring points are on the same plane in the design drawing). The X-value deviations between measuring points A and C, and between measuring points B and D, represent the verticality of the archway in the X-axis. Adjust the deviation values ​​to meet the installation requirements. The other archway is adjusted using the same steps.

[0079] like Figure 5 When two arches of a rolling mill are installed on the rail base, the X-axis deviation of measuring points A and B, and measuring points C and D can reflect the misalignment of the two arches.

[0080] Adjust the position of the archway according to the measurement data until it meets the installation standards, and then gradually tighten the anchor bolts until it meets the design values.

[0081] The above describes the installation method for the F4 rolling mill archway. Following this plan, other rolling mills will be installed gradually, ultimately completing the installation of the rolling mill train, followed by the installation of the rolling mill equipment and piping.

[0082] This invention perfectly combines theory and practice, is simple to operate, and yields significant results, placing it at a leading level in the industry both domestically and internationally. Its successful implementation meets the requirements of high efficiency and high precision in operational tasks, improving work efficiency while reducing the number of repetitive adjustments. Its theory and method have broad application value in the installation, maintenance, and adjustment of other hot rolling equipment.

[0083] This invention addresses the problems of tight schedules, heavy workloads, and low efficiency in current rolling mill installation operations by developing a new installation and adjustment method. This invention improves the installation accuracy and operational efficiency of production equipment during rolling mill installation. Utilizing a newly developed laser tracker measurement and adjustment method, the installation accuracy of rolling mill equipment can reach the micrometer level, thereby accurately and efficiently completing the installation of rolling mill rail supports and archways, effectively solving the aforementioned problems in the background technology.

Claims

1. A method for adjusting the rolling mill rail base and archway using a laser tracker, characterized in that... Includes the following steps: S1. Data Extraction: Analyze the drawings, extract the mill installation data requirements, determine the acceptance method after the installation and adjustment are completed, and formulate corresponding measurement and adjustment methods based on the acceptance method; S2. Verification of reference points: Based on the reference points of the mill center line and rolling center line given by the line setting personnel in the previous process, use a laser tracker to verify the reference points; S3. Reversal point layout: Use a laser tracker to measure the center line of the rolling mill and the center point of the rolling line, establish a measurement coordinate system, and arrange reversal points on the operating side and the transmission side of the rolling mill; S4. Coarse and fine adjustment of the rail base: After the grouting construction of the rolling mill rail base is completed and the installation requirements are met, the rail base is hoisted to the installation position by the overhead crane in the plant and coarse and fine adjustment is performed using a laser tracker; after the rail base is adjusted and positioned, each arch of the rolling mill is placed in the order of first the drive side and then the operation side according to the predetermined rolling mill installation sequence, the upper crossbeam and the lower crossbeam are connected, and then the verticality of the rolling mill arch is measured. S5. Acceptance of track and seat: Report to the project department and conduct acceptance work until it passes the acceptance test; S6. Archway installation and adjustment: Verticality measurement includes two directions: rolling direction and mill direction. A laser tracker is used to simultaneously detect the verticality in both directions, and the misalignment error of the two archways in the rolling direction is also detected. The position of the archways is adjusted according to the measurement data until it meets the installation standards. Then, the anchor bolts are gradually tightened until they meet the design values. S7. Organize the archway acceptance: Report to the project department and conduct acceptance work until it passes the acceptance; In step S4, the steps for coarse and fine adjustment of the rail base are as follows: S41. Leveling and alignment, with elevation controlled at +0.3mm and centerline controlled at 1mm; S42 and M80 anchor bolts are pressurized to 20%, all wedges are fully shimmed, and the level is adjusted. The elevation is controlled at +0.25mm, the centerline is controlled at 0.1mm, the difference between B1 and B2 is 0.03mm, the difference between A1 and A2 is 0.05mm, and the horizontal level is controlled at 0.03mm / m. S43 and M80 anchor bolts are pressurized to 50%, with elevation controlled at +0.2mm and centerline controlled at 0.1mm. The difference between B1 and B2 is 0.03mm, the difference between A1 and A2 is 0.05mm, and the horizontal control is 0.03mm / m. For S44 and M100 anchor bolts, first pressurize to 20%, then pressurize to 50%, check the elevation +0.15mm, control the center line at 0.1mm, with the difference between B1 and B2 at 0.03mm, the difference between A1 and A2 at 0.05mm, and the horizontal control at 0.03mm / m. S45. First, press the M80 anchor bolts to 70% pressure, and press the M100 anchor bolts to 70% pressure. Check the elevation +0.1mm, control the center line at 0.1mm, with the difference between B1 and B2 being 0.03mm, the difference between A1 and A2 being 0.05mm, and the horizontal control at 0.03mm / m.

2. The method for adjusting the rolling mill rail base and archway using a laser tracker according to claim 1, characterized in that: In step S2, before the equipment is installed, 16 permanent reference points are reserved by the civil engineering party in the finishing mill area, including two points in the direction of the rolling line, one at the entrance position and one at the exit position; and one on each of the north and south sides of the seven rolling mills. All reference points are checked with a laser tracker until they all meet the requirements before the subsequent installation work begins.

3. The method for adjusting the rolling mill rail base and archway using a laser tracker according to claim 1, characterized in that: In step S3, two sets of reverse stations are arranged at appropriate positions on the operating side and the transmission side of the rolling mill. According to the principle of reverse station arrangement, the reverse stations are arranged to ensure that they cover the rolling mill installation area and there is an elevation difference between the reverse stations. The south reverse station is mainly used for measurement. When there is an area that cannot be measured by laser due to obstruction, the north reverse station is used for measurement and adjustment.

4. The method for adjusting the rolling mill rail base and archway using a laser tracker according to claim 1, characterized in that: In step S6, the verticality measurement and adjustment steps are as follows: After the single-piece rolling mill stand is installed on the rail base, the verticality of the stand is adjusted. First, the rolling direction, i.e., the X direction, is adjusted. Measuring points one, two, three, and four are selected on the stand. The four measuring points are on the same plane in the design drawing. The Z-value deviation between measuring point one and measuring point three, and the Z-value deviation between measuring point two and measuring point four, represent the verticality of the stand in the Z direction. The deviation values ​​are adjusted to meet the installation requirements. The same steps are used to adjust the other stand. Next, in the mill direction, i.e. the Z-direction, select measuring points A, B, C and D on a single archway. The four measuring points are on the same plane in the design drawing. The X-value deviation between measuring point A and measuring point C, and the X-value deviation between measuring point B and measuring point D, indicate the verticality of the archway in the X-direction. Adjust the deviation values ​​to meet the installation requirements. The other archway is adjusted using the same steps. After the two arches of a rolling mill are installed on the rail base, the X-axis deviation of measuring points A and B, and measuring points C and D can reflect the misalignment of the two arches.

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