A method for installing a bloom crystallizer vibration table

Abstract

The present invention relates to a method for installing a bloom crystallizer vibration table, and belongs to the technical field of steel machinery installation methods. The technical solution of the present invention is: determine the line 2300mm to the right of the longitudinal center of the continuous casting machine and the outer arc line of the base, and bury permanent marking points; check the distance between the flow center mark block and the line 2300mm to the right of the longitudinal center of the continuous casting machine, check the distance between the base surface positioning pin axis of the front base beam of the vibration table and the outer arc line of the base, and check the positioning pin of the crystallizer mounting surface of the vibration table and the outer arc line of the crystallizer mounting surface of the vibration table. The beneficial effects of the present invention are: achieving precise positioning of each key component of the vibration table, minimizing the error of each installation link, and thus minimizing the accumulated error of the installation of the bloom crystallizer vibration table.

Description

Technical Field

[0001] The invention relates to a method for installing a bloom crystallizer vibration table, and belongs to the technical field of steel machinery installation methods. Background Art

[0002] The mold vibrating table is a critical piece of equipment in a bloom continuous casting machine. Its function is to prevent adhesion between the bloom and the mold copper wall during the casting process through mold vibration, ensuring excellent surface quality. However, traditional mold vibrating tables for bloom continuous casting machines often experience positional deviations due to their large size and weight, complex installation procedures, and numerous steps. This, combined with the installation and operation methods of the installation personnel, can seriously impact their operation. Existing installation techniques do not adequately meet the precision requirements for mold vibrating tables. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for installing a large square billet crystallizer vibration table. By adopting the method of calibrating the distance between the base surface positioning pin axis of the integral front base beam of the vibration table and the outer arc line of the base, calibrating the distance between the flow center mark block and the line 2300mm to the right of the longitudinal center, and calibrating the positioning pin of the crystallizer mounting surface of the vibration table and the outer arc line of the crystallizer mounting surface, the precise positioning of the key components of the vibration table is achieved, the error of each installation link is minimized, and the accumulated error of the large square billet crystallizer vibration table installation is minimized, thereby effectively solving the above-mentioned problems existing in the background technology.

[0004] The technical solution of the present invention is: a method for installing a bloom crystallizer vibration table, comprising the following steps:

[0005] (1) Installation preparation: Use a total station to determine the 2300mm right line of the longitudinal center of the continuous casting machine, bury permanent marking points at the installation position of the vibrating table, and set up a longitudinal measuring frame; use a total station to determine the outer arc of the base, bury permanent marking points on the outer arc of the base and on both sides of the vibrating table, and set up a transverse measuring frame with the two permanent marking points as reference points;

[0006] (2) Installation of the vibration table base. Install the overall front base beam of the vibration table on the reinforced concrete of the bottom beam of the vibration table. All base surfaces of the overall front base beam of the vibration table must be in contact with the installation surface of the footing on each flow vibration table. Adjust the levelness and elevation of each base surface of the overall front base beam of the vibration table, adjust the parallelism of the overall front base beam of the vibration table with the line 2300mm to the right of the longitudinal center of the continuous casting machine, and adjust the parallelism of the overall front base beam of the vibration table with the outer arc of the base; Install the rear base of the vibration table together with the overall front base beam of the vibration table. After the rear base of the vibration table is installed in place, adjust its base elevation and levelness by flat iron and inclined iron; After the adjustment of the overall front base beam of the vibration table and the rear base of the vibration table is completed, tighten the base bolts. After tightening, re-measure the elevation and levelness of the overall front base beam of the vibration table and the rear base of the vibration table. Re-measure the distance and parallelism of the overall front base beam of the vibration table and the rear base of the vibration table relative to the line 2300mm to the right of the longitudinal center of the continuous casting machine and the outer arc of the base. After the re-measurement is qualified, perform secondary grouting and carry out maintenance;

[0007] (3) Hoisting: Hoist the crystallizer vibrating table of each stream of the continuous casting machine to the vibrating table base of the corresponding stream, align the positioning pin holes on the crystallizer vibrating table feet with the positioning pins on the corresponding base surface, and then install it in place;

[0008] (4) Adjustment: Measure the elevation and levelness of the crystallizer installation surface. If the requirements are not met, use a jack and a jack to lift the lower part of the crystallizer vibration table, and add adjustment pads between the crystallizer vibration table's foot and the base surface of the overall front base beam and the vibration rear base; measure the distance tolerance and tolerance deviation from the outer edge of the crystallizer installation positioning pin to the outer arc of the crystallizer installation surface. If the requirements are not met, use a jack and a jack to adjust; after adjustment, tighten the crystallizer vibration table anchor bolts, re-measure the elevation and levelness of the crystallizer installation surface, and re-measure the distance tolerance and tolerance deviation between the crystallizer installation surface positioning pin and the outer arc of the crystallizer installation surface until the re-measurement is qualified;

[0009] (5) Servo cylinder installation: Use the jack and jack to lift the lower movable frame of the vibration table, use the pin to fix the servo cylinder to the upper and lower bases of the vibration table, connect the hydraulic pipelines and electrical circuits, and thus complete the installation of the large square billet crystallizer vibration table.

[0010] In the step (2), the vibration table has seven base surfaces in total on the front base beam. When measuring the elevation of each base surface, four points evenly distributed on the base surface are measured. The elevation on the base surface is measured first. After the elevation of the four points meets the requirements, the levelness of the four points evenly distributed on the base surface is measured. After meeting the requirements, the elevation of the four points evenly distributed on the base surface is measured again. Only when all the elevations meet the requirements can the base surface be considered qualified. During the base surface adjustment process, if a measurement point does not meet the requirements, the base surface is raised by a jack and a jack, and the flat iron and the inclined iron below it are adjusted. After the adjustment, the measurement is carried out again until the data at this point meets the requirements.

[0011] In the step (2), the parallelism between the front base beam of the vibration table and the line 2300mm to the right of the longitudinal center of the continuous casting machine is adjusted. The longitudinal measuring frame includes a longitudinal measuring frame 1, a longitudinal measuring frame 2 and a line 2300mm to the right of the longitudinal center. Before the measurement, the line 2300mm to the right of the longitudinal center set between the longitudinal measuring frame 1 and the longitudinal measuring frame 2 is first checked. Then, plumb bobs 3 and 4 are hung near the flow center mark block on the front base beam of the vibration table. The distance from the top of plumb bobs 3 and 4 to the center extension line of the two ends of the flow center mark block is measured with a vernier caliper to see if it meets the design standard requirements. If not, a top bar and a jack are used for adjustment. At the same time, the parallelism of the front base beam of the vibration table to the line 2300mm to the right of the longitudinal center is measured, that is, the distance from the top of plumb bobs 3 and 4 to the center extension line of the two ends of the flow center mark block is within 0.05mm.

[0012] In the step (2), the parallelism between the front base beam of the vibration table and the outer arc of the base is adjusted. The horizontal measuring frame includes a measuring frame 1, a horizontal measuring frame 2 and the outer arc of the base. Before the measurement, a plumb line 1 and a plumb line 2 are hung on the outer arc of the base set between the horizontal measuring frame 1 and the horizontal measuring frame 2, which are used to align with two permanent marking points respectively to correct the outer arc of the base; then the base surface positioning pins are installed in the seven base surface positioning holes, and the outer edge of the base surface positioning pins is measured from the outer arc of the base to the center of the base surface positioning pins using an inner diameter equal divider. The value is equal to the distance from the outer arc of the base to the center of the base surface positioning pins minus the radius of the base surface positioning pins. If the value deviates, use a push bar and a jack to adjust until the deviation of the distance from the outer arc of the base to the outer edge of the positioning pins on each base surface is less than 0.5 mm. The parallelism between the front base beam of the vibration table and the outer arc of the base, that is, the tolerance deviation from the outer edge of the base surface positioning pins to the outer arc is less than 0.05 mm.

[0013] In the step (2), after the vibration rear base is installed in place, the base elevation and levelness thereof are adjusted by means of flat irons and inclined irons, the distance from the center of each bolt hole on the vibration rear base to the line 2300 mm to the right of the longitudinal center is calculated from the drawing, and the distance from the center of each bolt hole on the vibration rear base to the line 2300 mm to the right of the longitudinal center is measured, with the elevation tolerance within 0.5 mm; with the center of the bolt hole on each base surface as the reference, the distance to the center of each corresponding bolt hole on the vibration rear base is measured, with the levelness tolerance deviation being less than 0.05 mm.

[0014] In the step (4), the elevation and levelness of the crystallizer mounting surface are measured, and the elevation and levelness are measured at eight evenly distributed points on the crystallizer mounting surface.

[0015] In the step (4), the distance tolerance and tolerance deviation from the outer edge of the crystallizer mounting locating pin to the outer arc of the crystallizer mounting surface are measured. Before the measurement, plumb bob 5 and plumb bob 6 are hung on the outer arc of the crystallizer mounting surface between the crystallizer mounting surface measuring frame 1 and the crystallizer mounting surface measuring frame 2, and are used to align with the two permanent marking points respectively to correct the outer arc of the crystallizer mounting surface. The distance from the top of plumb bob 5 and plumb bob 6 to the outer edge of the crystallizer mounting surface locating pin is measured with an internal diameter equal divider, and its tolerance is within +0.5mm. The distance tolerance deviation from the crystallizer mounting locating pin of all flows to the top of plumb bob 5 and plumb bob 6 is within +0.05mm. If it does not meet the requirements, it is adjusted with a push bar and a jack.

[0016] The material of the structural parts used to represent the line 2300mm to the right of the longitudinal center of the continuous casting machine, the outer arc line of the base and the outer arc line of the crystallizer installation surface is steel wire.

[0017] The beneficial effects of the present invention are as follows: by calibrating the distance between the base surface locating pin axis of the integral front base beam of the vibration table and the outer arc line of the base, calibrating the distance between the flow center mark block and the line 2300mm to the right of the longitudinal center, and calibrating the locating pin of the crystallizer mounting surface of the vibration table and the outer arc line of the crystallizer mounting surface, accurate positioning of the key components of the vibration table is achieved, the error of each installation link is minimized, and the accumulated error of the installation of the large square billet crystallizer vibration table is minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the installation site of the integral front base beam of the vibration platform of the present invention;

[0019] Figure 2 This is a top view of the installation site of the integral front base beam and the rear base of the vibration table of the present invention;

[0020] Figure 3 This is the AA view of the transverse measuring frame of the present invention;

[0021] Figure 4 This is a view of the longitudinal measuring frame BB of the present invention;

[0022] Figure 5 This is a structural diagram of the crystallizer mounting surface measuring frame of the present invention;

[0023] Figure 6 This is the installation diagram of the integral vibration table of the present invention;

[0024] In the figure: base surface one 1, base surface two 2, base surface three 3, base surface four 4, base surface five 5, base surface six 6, base surface seven 7, top bar 8, jack 9, horizontal measuring frame one 10, horizontal measuring frame two 11, outer arc line of base 12, longitudinal measuring frame one 13, 2300 line to the right of longitudinal center 14, longitudinal measuring frame two 15, base surface locating pin 16, plumb line one 17, plumb line two 18, plumb line three 19, plumb line four 20, integral front base beam of vibration table 21, permanent marking point 22, crystallizer vibration table 23, crystallizer mounting surface locating pin 24, vibration rear base 25, flow center marker block 26, crystallizer mounting surface 27, crystallizer mounting surface measuring frame one 28, crystallizer mounting surface measuring frame two 29, plumb line five 30, plumb line six 31, outer arc line of crystallizer mounting surface 32, servo cylinder 33, upper base 34, lower base 35. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the invention implementation cases clearer, the technical solutions in the invention implementation cases will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the present invention, rather than all the implementation cases. Based on the implementation cases in the present invention, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] A method for installing a bloom crystallizer vibration table comprises the following steps:

[0027] (1) Installation preparation: Use a total station to determine the 2300mm right line of the longitudinal center of the continuous casting machine, bury permanent marking points at the installation position of the vibrating table, and set up a longitudinal measuring frame; use a total station to determine the outer arc of the base, bury permanent marking points on the outer arc of the base and on both sides of the vibrating table, and set up a transverse measuring frame with the two permanent marking points as reference points;

[0028] (2) Installation of the vibration table base. Install the overall front base beam of the vibration table on the reinforced concrete of the bottom beam of the vibration table. All base surfaces of the overall front base beam of the vibration table must be in contact with the installation surface of the footing on each flow vibration table. Adjust the levelness and elevation of each base surface of the overall front base beam of the vibration table, adjust the parallelism of the overall front base beam of the vibration table with the line 2300mm to the right of the longitudinal center of the continuous casting machine, and adjust the parallelism of the overall front base beam of the vibration table with the outer arc of the base; Install the rear base of the vibration table together with the overall front base beam of the vibration table. After the rear base of the vibration table is installed in place, adjust its base elevation and levelness by flat iron and inclined iron; After the adjustment of the overall front base beam of the vibration table and the rear base of the vibration table is completed, tighten the base bolts. After tightening, re-measure the elevation and levelness of the overall front base beam of the vibration table and the rear base of the vibration table. Re-measure the distance and parallelism of the overall front base beam of the vibration table and the rear base of the vibration table relative to the line 2300mm to the right of the longitudinal center of the continuous casting machine and the outer arc of the base. After the re-measurement is qualified, perform secondary grouting and carry out maintenance;

[0029] (3) Hoisting: Hoist the crystallizer vibrating table of each stream of the continuous casting machine to the vibrating table base of the corresponding stream, align the positioning pin holes on the crystallizer vibrating table feet with the positioning pins on the corresponding base surface, and then install it in place;

[0030] (4) Adjustment: Measure the elevation and levelness of the crystallizer installation surface. If the requirements are not met, use a jack and a jack to lift the lower part of the crystallizer vibration table, and add adjustment pads between the crystallizer vibration table's foot and the base surface of the overall front base beam and the vibration rear base; measure the distance tolerance and tolerance deviation from the outer edge of the crystallizer installation positioning pin to the outer arc of the crystallizer installation surface. If the requirements are not met, use a jack and a jack to adjust; after adjustment, tighten the crystallizer vibration table anchor bolts, re-measure the elevation and levelness of the crystallizer installation surface, and re-measure the distance tolerance and tolerance deviation between the crystallizer installation surface positioning pin and the outer arc of the crystallizer installation surface until the re-measurement is qualified;

[0031] (5) Servo cylinder installation: Use the jack and jack to lift the lower movable frame of the vibration table, use the pin to fix the servo cylinder to the upper and lower bases of the vibration table, connect the hydraulic pipelines and electrical circuits, and thus complete the installation of the large square billet crystallizer vibration table.

[0032] In the step (2), the vibration table has seven base surfaces in total on the front base beam. When measuring the elevation of each base surface, four points evenly distributed on the base surface are measured. The elevation on the base surface is measured first. After the elevation of the four points meets the requirements, the levelness of the four points evenly distributed on the base surface is measured. After meeting the requirements, the elevation of the four points evenly distributed on the base surface is measured again. Only when all the elevations meet the requirements can the base surface be considered qualified. During the base surface adjustment process, if a measurement point does not meet the requirements, the base surface is raised by a jack and a jack, and the flat iron and the inclined iron below it are adjusted. After the adjustment, the measurement is carried out again until the data at this point meets the requirements.

[0033] In the step (2), the parallelism between the front base beam of the vibration table and the line 2300mm to the right of the longitudinal center of the continuous casting machine is adjusted. The longitudinal measuring frame includes a longitudinal measuring frame 1, a longitudinal measuring frame 2 and a line 2300mm to the right of the longitudinal center. Before the measurement, the line 2300mm to the right of the longitudinal center set between the longitudinal measuring frame 1 and the longitudinal measuring frame 2 is first checked. Then, plumb bobs 3 and 4 are hung near the flow center mark block on the front base beam of the vibration table. The distance from the top of plumb bobs 3 and 4 to the center extension line of the two ends of the flow center mark block is measured with a vernier caliper to see if it meets the design standard requirements. If not, a top bar and a jack are used for adjustment. At the same time, the parallelism of the front base beam of the vibration table to the line 2300mm to the right of the longitudinal center is measured, that is, the distance from the top of plumb bobs 3 and 4 to the center extension line of the two ends of the flow center mark block is within 0.05mm.

[0034] In the step (2), the parallelism between the front base beam of the vibration table and the outer arc of the base is adjusted. The horizontal measuring frame includes a measuring frame 1, a horizontal measuring frame 2 and the outer arc of the base. Before the measurement, a plumb line 1 and a plumb line 2 are hung on the outer arc of the base set between the horizontal measuring frame 1 and the horizontal measuring frame 2, which are used to align with two permanent marking points respectively to correct the outer arc of the base; then the base surface positioning pins are installed in the seven base surface positioning holes, and the outer edge of the base surface positioning pins is measured from the outer arc of the base to the center of the base surface positioning pins using an inner diameter equal divider. The value is equal to the distance from the outer arc of the base to the center of the base surface positioning pins minus the radius of the base surface positioning pins. If the value deviates, use a push bar and a jack to adjust until the deviation of the distance from the outer arc of the base to the outer edge of the positioning pins on each base surface is less than 0.5 mm. The parallelism between the front base beam of the vibration table and the outer arc of the base, that is, the tolerance deviation from the outer edge of the base surface positioning pins to the outer arc is less than 0.05 mm.

[0035] In the step (2), after the vibration rear base is installed in place, the base elevation and levelness thereof are adjusted by means of flat irons and inclined irons, the distance from the center of each bolt hole on the vibration rear base to the line 2300 mm to the right of the longitudinal center is calculated from the drawing, and the distance from the center of each bolt hole on the vibration rear base to the line 2300 mm to the right of the longitudinal center is measured, with the elevation tolerance within 0.5 mm; with the center of the bolt hole on each base surface as the reference, the distance to the center of each corresponding bolt hole on the vibration rear base is measured, with the levelness tolerance deviation being less than 0.05 mm.

[0036] In the step (4), the elevation and levelness of the crystallizer mounting surface are measured, and the elevation and levelness are measured at eight evenly distributed points on the crystallizer mounting surface.

[0037] In the step (4), the distance tolerance and tolerance deviation from the outer edge of the crystallizer mounting locating pin to the outer arc of the crystallizer mounting surface are measured. Before the measurement, plumb bob 5 and plumb bob 6 are hung on the outer arc of the crystallizer mounting surface between the crystallizer mounting surface measuring frame 1 and the crystallizer mounting surface measuring frame 2, and are used to align with the two permanent marking points respectively to correct the outer arc of the crystallizer mounting surface. The distance from the top of plumb bob 5 and plumb bob 6 to the outer edge of the crystallizer mounting surface locating pin is measured with an internal diameter equal divider, and its tolerance is within +0.5mm. The distance tolerance deviation from the crystallizer mounting locating pin of all flows to the top of plumb bob 5 and plumb bob 6 is within +0.05mm. If it does not meet the requirements, it is adjusted with a push bar and a jack.

[0038] The material of the structural parts used to represent the line 2300mm to the right of the longitudinal center of the continuous casting machine, the outer arc line of the base and the outer arc line of the crystallizer installation surface is steel wire.

[0039] Example:

[0040] The installation of the mold vibration table of a six-machine, six-strand bloom continuous casting machine is taken as an example to illustrate.

[0041] Six-machine, six-strand bloom continuous casting machine, arc radius 12 meters, production of billet specifications 280×280, 200×280, billet length 4-10 meters, strand spacing 1.6 meters, vibration unit, outer arc hydraulic type.

[0042] Through analysis of the design drawings, it can be seen that the distance from the outer arc of the base to the base surface positioning pin shaft 16 of the front base beam 21 of the vibration table should be 1011mm, the diameter of the base surface positioning pin shaft 16 is 40mm, and the distance from the outer arc line of the base to the outer edge of the base surface positioning pin shaft 16 should be 1011mm-20mm=991mm.

[0043] Since some equipment of the six-machine six-strand large square billet continuous casting machine is installed on the longitudinal center line, it is very inconvenient to use the longitudinal center line to measure the parallelism of the equipment. Therefore, the line 2300mm to the right of the longitudinal center is used for measurement.

[0044] Through the analysis of the design drawings, it can be known that the distance from the line 2300mm to the right of the longitudinal center to the center extension line of the two ends of the flow center mark block 26 on the front base beam 21 of the vibration table should be 100mm.

[0045] Through analysis of the design drawings, it can be seen that the distance from the outer arc of the crystallizer mounting surface to the center of the crystallizer mounting surface locating pin 24 on the crystallizer mounting surface 27 of the vibration table 23 is 140 mm, and the diameter of the crystallizer mounting surface locating pin 24 is 60 mm. Therefore, the distance from the outer arc of the crystallizer mounting surface to the outer edge of the crystallizer mounting surface locating pin 24 on the crystallizer mounting surface 27 of the vibration table 23 is 140 mm - 30 mm = 110 mm.

[0046] Preparation steps:

[0047] The reinforced concrete of the bloom continuous casting machine's crystallizer vibration table has been poured according to the design drawings and has been cured.

[0048] Based on the bloom continuous casting machine's on-site measurement and control network, permanent marking points were buried at the vibrating table installation site, and their elevations were determined to serve as reference points for measurement. Based on the bloom continuous casting machine's longitudinal centerline in the on-site measurement and control network, a total station was used to determine a line 2300mm to the right of the longitudinal center of the continuous casting machine. Two permanent marking points were buried across the vibrating table installation location. Based on these two buried permanent marking points, longitudinal measuring frame 13, a line 2300mm to the right of the longitudinal center of the continuous casting machine 14, and longitudinal measuring frame 25 were erected. Plumb bob 3 19 and plumb bob 4 20 were suspended from the line 2300mm to the right of the longitudinal center of the continuous casting machine 14. Their tops were aligned with the two permanent marking points 22 to calibrate the 2300mm line to the right of the longitudinal center of the continuous casting machine.

[0049] A total station is used to determine the outer arc line of the base, and permanent marking points are buried on the outer arc line of the base and on both sides of the vibration table. With the two permanent marking points as reference points, a horizontal measuring frame 10, a horizontal measuring frame 11 and an outer arc line of the base 12 are set up, and a plumb bob 17 and a plumb bob 18 are hung on the outer arc line of the base to align with the two permanent marking points 22 respectively to correct the outer arc line of the base 12.

[0050] Vibration table base installation steps:

[0051] The vibration table 23 of each stream of the large square billet continuous casting machine has four anchor bolt holes, of which the front two anchors are installed on the integral front base beam 21 of the vibration table of each stream, and the rear two anchor bolts are installed on the vibration rear base 25. Therefore, the installation of the base of the vibration table 23 includes the installation of the integral front base beam 21 of the vibration table and the installation of the vibration rear base 25.

[0052] Installation of the vibration table's integral front base beam 21

[0053] The front base beam 21 of the vibration table is placed on the reinforced concrete of the bottom beam of the vibration table. There are seven reference surfaces on the front base beam 21 of the vibration table, namely base surface 1, base surface 2, base surface 3, base surface 4, base surface 5, base surface 6, and base surface 7. These seven reference surfaces will contact the foundation installation surface of each flow vibration table 23.

[0054] 1. Installation and adjustment of the horizontality and elevation of each base surface of the vibration table's overall front base beam 21

[0055] First, adjust the elevation and levelness of base surface 1 1 and base surface 7 at the same time, with the elevation tolerance within 0.5mm and the levelness tolerance within 0.05mm; then adjust the elevation and levelness of base surface 2 2 and base surface 6 6 at the same time, with the elevation tolerance within 0.5mm and the levelness tolerance within 0.05mm; then adjust the elevation and levelness of base surface 3 3 and base surface 5 at the same time, with the elevation tolerance within 0.5mm and the levelness tolerance within 0.05mm; finally, adjust the elevation and levelness of base surface 4, with the elevation tolerance within 0.5mm and the levelness tolerance within +0.05mm.

[0056] When measuring the elevation on each base surface, four evenly distributed points on the base surface should be taken for measurement. First, the elevation on the base surface should be measured with a level. After the elevation of the four points meets the requirements, the level should be used to measure the horizontality of the four evenly distributed points on the base surface. After meeting the requirements, the elevation of the four evenly distributed points on the base surface should be re-measured. Only after they all meet the requirements can the base surface be considered qualified for adjustment. During the base surface adjustment process, if a measuring point does not meet the requirements, the base surface should be lifted with a jack 8 and a jack 9, and the flat iron and inclined iron below it should be adjusted. After the adjustment, measurement should be carried out again until the data at this point meets the requirements.

[0057] 2. Adjustment of the parallelism between the front base beam 21 of the vibration table and the line 2300mm to the right of the longitudinal center of the continuous casting machine

[0058] Before measurement, first calibrate the 2300mm right longitudinal center line 14 of the continuous casting machine on the longitudinal measuring frame 13 and the longitudinal measuring frame 2 15. Hang plumb bob 3 19 and plumb bob 4 20 on the 2300mm right longitudinal center line 14 of the continuous casting machine. Align them with two permanent marking points 22 to calibrate the 2300mm right longitudinal center line of the continuous casting machine. Then, hang two plumb bobs near the center extensions of the two ends of the flow center mark 26 on the integral front base beam 21 of the vibration table. Use a vernier caliper to measure whether the distance from the top of the two plumb bobs to the center extensions of the two ends of the flow center mark 26 is within 100+0.5=100.5mm. If not, adjust using the jack 8 and jack 9. At the same time, measure the parallelism of the integral front base beam 21 of the vibration table to the 2300mm right longitudinal center line of the continuous casting machine. That is, the distance tolerance of the top of the two plumb bobs to the center extensions of the two ends of the flow center mark 26 is within 0.05mm.

[0059] 3. Adjustment of the parallelism between the front base beam 21 and the outer arc line of the vibration table

[0060] Before measurement, hang plumb bobs 17 and 18 on the base outer arc 12 on the horizontal measuring frame 10 and horizontal measuring frame 2 11 to align with the two permanent marking points 22, respectively, to align with the base outer arc 12. Then, install the base surface locating pins 16 in the base surface locating holes of base surface 1 1, base surface 2 2, base surface 3 3, base surface 4 4, base surface 5 5, base surface 6 6, and base surface 7 7. Use an inside diameter equalizer to measure the distance from the base outer arc to the outer edge of each base surface locating pin 16. The value is equal to the distance from the base outer arc to the center of the base surface locating pin 16 minus the radius of the base surface locating pin 16. That is, if the diameter of the base surface locating pin 16 is 40mm, the distance from the base outer arc to the outer edge of the base surface locating pin 16 should be 1011mm-20mm=991mm. If the value deviates, use the top bar 8 and the jack 9 to adjust it until the distance deviation from the outer edge of the base arc to the outer edge of each base surface positioning pin 16 is less than 0.5mm, and the parallelism between the front base beam 21 of the vibration table and the outer arc of the base, that is, the tolerance deviation from the edge of the six base surface positioning pins 16 on the front base beam 21 of the vibration table to the outer arc of the base is less than 0.05mm.

[0061] Installation of vibration rear base 25

[0062] The installation of the vibration rear base 25 is similar to the installation of the overall front base beam 21 of the vibration table. After the vibration rear base 25 is installed in place, its base elevation and levelness are adjusted by flat iron and inclined iron. The elevation tolerance is within 0.5mm and the levelness tolerance is within +0.05mm. Taking the center of the bolt holes on each of the base surfaces among base surface 1, base surface 2, base surface 3, base surface 4, base surface 5, base surface 6 and base surface 7 as the reference, measure the distance to the center of the bolt hole of each corresponding vibration rear base 25, and the tolerance of each distance is within 0.5mm. The distance tolerance deviation from the center of the bolt hole on each of the base surfaces among base surface 1, base surface 2, base surface 3, base surface 4, base surface 5, base surface 6 and base surface 7 to the center of the bolt hole of each corresponding vibration rear base 25 is less than 0.05mm. The distance from the center of each bolt hole on the six vibration rear bases 25 to the center of the bolt hole on each base surface is calculated to be 1580mm from the drawing. The distance from the center of each bolt hole on the six vibration rear bases 25 to the line 2300mm to the right of the longitudinal center of the continuous casting machine is measured, and the tolerance is within 0.5mm.

[0063] After the adjustment of the overall front base beam 21 of the vibration table and the rear base 25 of the vibration table is completed, the base bolts are tightened. After the tightening is completed, their elevation and levelness are remeasured. The distance and parallelism of the overall front base beam 21 of the vibration table and the rear base 25 of the vibration table relative to the 2300mm right line of the longitudinal center of the continuous casting machine and the outer arc line of the base are remeasured. After passing the re-measurement, secondary grouting is carried out and maintenance is carried out.

[0064] Hoisting steps: Hoist the vibrating table 23 of each stream crystallizer of the continuous casting machine to the base of the corresponding stream. Align the positioning pin holes on the base of the vibrating table 23 with the positioning pins on the corresponding base surface, and then install it in place.

[0065] Adjustment steps:

[0066] First, eight evenly distributed points on the crystallizer mounting surface 27 of the vibration table 23 of the first-stream large square billet continuous casting machine are measured for their elevation with a level instrument, and their levelness is measured with a spirit level instrument to ensure that their elevation is within the tolerance of +0.5mm and their levelness is within +0.05mm. If the requirements are not met, the lower part of the vibration table 23 is lifted by using a jack 8 and a jack 9, and an adjustment pad is added between the foot of the vibration table 23 and the base surface of the integral front base beam 21 of the vibration table and the vibration rear base 25. Before measurement, hang plumb bobs 5 30 and 6 31 on the mold mounting surface outer arc 32 on the mold mounting surface measurement stand 1 28 and the mold mounting surface measurement stand 2. These are used to align the two permanent marking points 22 with the mold mounting surface outer arc 32, respectively. Hang a plumb bob on the mold mounting surface outer arc 32 and use an inside diameter ruler to measure the distance from the top of the plumb bob to the outer edge of the mold mounting surface locating pin 24 to be 110 mm. The tolerance should be within +0.5 mm. The distance tolerance from the mold mounting locating pin 24 to the corresponding plumb bob for all vibrating tables on each flow should be within +0.05 mm. If this does not meet the requirements, adjust it using the jack 8 and jack 9. After the vibration tables 23 of each flow are adjusted, the anchor bolts of the vibration tables 23 of all flows are tightened, and the elevation and horizontality of the crystallizer mounting surface 27 are measured at eight evenly distributed points for re-measurement. At the same time, the distance tolerance and tolerance deviation from the outer edge of the crystallizer mounting positioning pin 24 of all vibration tables of each flow to the corresponding plumb top are re-measured. The servo cylinder 33 can be installed only after the re-measurement is qualified.

[0067] Servo cylinder 33 installation steps:

[0068] Lift the lower movable frame of the vibrating table 23 with jacks 8 and jacks 9. Secure the servo cylinder 33 to the upper and lower bases 34 and 35 of the vibrating table 23 with pins. Connect the hydraulic and electrical lines. This completes the installation of the bloom mold vibrating table.

Claims

1. A method for installing a bloom crystallizer vibration table, characterized in that The following steps are involved: (1) Installation preparation: Use a total station to determine the 2300mm right line of the longitudinal center of the continuous casting machine, bury permanent marking points at the installation position of the vibrating table, and set up a longitudinal measuring frame; use a total station to determine the outer arc of the base, bury permanent marking points on the outer arc of the base and on both sides of the vibrating table, and set up a transverse measuring frame with the two permanent marking points as reference points; (2) Installation of the vibration table base. Install the overall front base beam of the vibration table on the reinforced concrete of the bottom beam of the vibration table. All base surfaces of the overall front base beam of the vibration table must be in contact with the installation surface of the footing on each flow vibration table. Adjust the levelness and elevation of each base surface of the overall front base beam of the vibration table, adjust the parallelism of the overall front base beam of the vibration table with the line 2300mm to the right of the longitudinal center of the continuous casting machine, and adjust the parallelism of the overall front base beam of the vibration table with the outer arc of the base; Install the rear base of the vibration table together with the overall front base beam of the vibration table. After the rear base of the vibration table is installed in place, adjust its base elevation and levelness by flat iron and inclined iron; After the adjustment of the overall front base beam of the vibration table and the rear base of the vibration table is completed, tighten the base bolts. After tightening, re-measure the elevation and levelness of the overall front base beam of the vibration table and the rear base of the vibration table. Re-measure the distance and parallelism of the overall front base beam of the vibration table and the rear base of the vibration table relative to the line 2300mm to the right of the longitudinal center of the continuous casting machine and the outer arc of the base. After the re-measurement is qualified, perform secondary grouting and carry out maintenance; (3) Hoisting: Hoist the crystallizer vibrating table of each stream of the continuous casting machine to the vibrating table base of the corresponding stream, align the positioning pin holes on the crystallizer vibrating table feet with the positioning pins on the corresponding base surface, and then install it in place; (4) Adjustment: Measure the elevation and levelness of the crystallizer installation surface. If the requirements are not met, use a jack and a jack to lift the lower part of the crystallizer vibration table, and add adjustment pads between the crystallizer vibration table's foot and the base surface of the overall front base beam and the vibration rear base; measure the distance tolerance and tolerance deviation from the outer edge of the crystallizer installation positioning pin to the outer arc of the crystallizer installation surface. If the requirements are not met, use a jack and a jack to adjust; after adjustment, tighten the crystallizer vibration table anchor bolts, re-measure the elevation and levelness of the crystallizer installation surface, and re-measure the distance tolerance and tolerance deviation between the crystallizer installation surface positioning pin and the outer arc of the crystallizer installation surface until the re-measurement is qualified; (5) Servo cylinder installation: Use the jack and jack to lift the lower movable frame of the vibration table, fix the servo cylinder to the upper and lower bases of the vibration table with the pin shaft, connect the hydraulic pipeline and electrical circuit, and complete the installation of the large square billet crystallizer vibration table.

2. The method for installing a bloom mold vibrating table according to claim 1, characterized in that: In the step (2), the vibration table has seven base surfaces in total on the front base beam. When measuring the elevation of each base surface, four points evenly distributed on the base surface are measured. The elevation on the base surface is measured first. After the elevation of the four points meets the requirements, the levelness of the four points evenly distributed on the base surface is measured. After meeting the requirements, the elevation of the four points evenly distributed on the base surface is measured again. Only when all the elevations meet the requirements can the base surface be considered qualified. During the base surface adjustment process, if a measurement point does not meet the requirements, the base surface is lifted by a jack and a jack, and the flat iron and the inclined iron below it are adjusted. After the adjustment, the measurement is carried out again until the data at this point meets the requirements.

3. The method for installing a bloom mold vibrating table according to claim 1, wherein: In the step (2), the parallelism between the front base beam of the vibration table and the line 2300mm to the right of the longitudinal center of the continuous casting machine is adjusted. The longitudinal measuring frame includes a longitudinal measuring frame 1, a longitudinal measuring frame 2 and a line 2300mm to the right of the longitudinal center. Before the measurement, the line 2300mm to the right of the longitudinal center set between the longitudinal measuring frame 1 and the longitudinal measuring frame 2 is first checked. Then, plumb bobs 3 and plumb bobs 4 are hung near the flow center mark block on the front base beam of the vibration table. The distance from the top of plumb bobs 3 and plumb bobs 4 to the center extension line of the two ends of the flow center mark block is measured with a vernier caliper to see if it meets the design standard requirements. If not, a top bar and a jack are used for adjustment. At the same time, the parallelism of the front base beam of the vibration table to the line 2300mm to the right of the longitudinal center is measured, that is, the distance from the top of plumb bobs 3 and plumb bobs 4 to the center extension line of the two ends of the flow center mark block is within 0.05mm.

4. The method for installing a bloom mold vibrating table according to claim 1, wherein: In the step (2), the parallelism between the front base beam of the vibration table and the outer arc of the base is adjusted. The horizontal measuring frame includes a measuring frame 1, a horizontal measuring frame 2 and the outer arc of the base. Before the measurement, a plumb line 1 and a plumb line 2 are hung on the outer arc of the base between the horizontal measuring frame 1 and the horizontal measuring frame 2, and are used to align with two permanent marking points respectively to correct the outer arc of the base; then, the base surface positioning pins are installed in the seven base surface positioning holes, and the outer edge of the base surface positioning pins to each base surface positioning pin is measured using an inner diameter equal divider. The value is equal to the distance from the outer arc of the base to the center of the base surface positioning pin minus the radius of the base surface positioning pin. If the value deviates, use a push bar and a jack to adjust until the deviation of the distance from the outer arc of the base to the outer edge of the positioning pin on each base surface is less than 0.5 mm. The parallelism between the front base beam of the vibration table and the outer arc of the base, that is, the tolerance deviation of the outer edge of the base surface positioning pin to the outer arc is less than 0.05 mm.

5. The method for installing a bloom mold vibrating table according to claim 1, wherein: In the step (2), after the vibration rear base is installed in place, the base elevation and levelness thereof are adjusted by means of flat irons and inclined irons, the distance from the center of each bolt hole on the vibration rear base to the line 2300 mm to the right of the longitudinal center is calculated from the drawing, and the distance from the center of each bolt hole on the vibration rear base to the line 2300 mm to the right of the longitudinal center is measured, with the elevation tolerance within 0.5 mm; with the center of the bolt hole on each base surface as the reference, the distance to the center of each corresponding bolt hole on the vibration rear base is measured, with the levelness tolerance deviation being less than 0.05 mm.

6. The method for installing a bloom mold vibrating table according to claim 1, wherein: In the step (4), the elevation and levelness of the crystallizer mounting surface are measured, and the elevation and levelness are measured at eight evenly distributed points on the crystallizer mounting surface.

7. The method for installing a bloom mold vibrating table according to claim 1, wherein: In the step (4), the distance tolerance and tolerance deviation from the outer edge of the crystallizer mounting locating pin to the outer arc of the crystallizer mounting surface are measured. Before the measurement, plumb bob 5 and plumb bob 6 are hung on the outer arc of the crystallizer mounting surface between the crystallizer mounting surface measuring frame 1 and the crystallizer mounting surface measuring frame 2, and are used to align with the two permanent marking points respectively to correct the outer arc of the crystallizer mounting surface. The distance from the top of plumb bob 5 and plumb bob 6 to the outer edge of the crystallizer mounting surface locating pin is measured with an inside diameter equal divider, and the tolerance is within +0.5mm. The distance tolerance deviation from the crystallizer mounting locating pin of all flows to the top of plumb bob 5 and plumb bob 6 is within +0.05mm. If it does not meet the requirements, it is adjusted with a push bar and a jack.

8. The method for installing a bloom mold vibrating table according to claim 1, characterized in that: The material of the structural parts used to represent the line 2300mm to the right of the longitudinal center of the continuous casting machine, the outer arc line of the base and the outer arc line of the crystallizer installation surface is steel wire.

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