Method for off-line arc alignment of a beam blank continuous casting support frame

Abstract

The application discloses a method for off-line arc adjustment of a beam blank continuous casting support frame and belongs to the technical field of measurement. The measurement process is as follows: hoisting the sector segment needing adjustment to the centering table adjusted to the standard state; laying out a laser tracker control network; erecting the laser tracker to the first station measurement reference surface and the first roller; erecting the laser tracker to the second station to measure the last roller; taking the reference surface and the ground level as the reference to establish a coordinate system; arranging the measurement radius and the center height of the first roller and the last roller under the coordinate system; calculating the relative height of the top surfaces of the first roller and the last roller; and calculating the adjustment amount. The application adjusts the relative height of the first roller and the last roller of the sector segment to the design standard range by taking the bottom plate of the centering table adjusted to the standard state as the reference through the laser tracker.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, and in particular to a method for offline arc alignment of a support frame for continuous casting of irregularly shaped billets. Background Technology

[0002] The centering device for the sector section of a special-shaped billet continuous casting machine of Baogang adopts the patent number 202320409455.3 "A Centering Device for the Sector Section of a Composite Continuous Casting Machine" developed by China Metallurgical Jingcheng Engineering Technology Co., Ltd. This centering device adjusts the elevation of the first and last rolls of the sector section by placing the first and last roll measuring frames on the support seats of the first and last roll measuring frames. The main drawback is that the height of the first and last roll measuring frames is relatively high, and even a slight tilt of the support seats of the first and last roll measuring frames will cause the measurement error to be amplified. This method cannot meet the standard adjustment accuracy requirements for the arc sector section.

[0003] Comparative Data 1: A Multifunctional Fan-Shaped Segment Alignment Platform

[0004] This utility model relates to a multifunctional fan-shaped segment centering platform. The centering platform includes a centering platform pit, a centering platform reference frame, and an arc-shaped ruler reference frame. The centering platform reference frame is provided with an arc-shaped centering reference support and a flat centering reference support. A water distribution plate is symmetrically arranged on the outer sides of the two centering platform reference frames, with a water inlet on the water distribution plate and an inlet pipe connected to the outside of the water distribution plate. A water collection pit is provided inside the centering platform pit, and a submersible pump is installed in the water collection pit. The drain pipe of the submersible pump leads to a trench. This utility model combines the fan-shaped segment centering platform and the test platform into one, reducing the workload of workers and improving work efficiency. However, it is not suitable for the adjustment and measurement of the fan-shaped segment of our continuous casting machine.

[0005] Comparative Data 2: A centering device for the sector section of a composite continuous casting machine

[0006] This utility model discloses a centering device for the sector section of a composite continuous casting machine, belonging to the field of continuous casting machine technology. To solve the problem of low roller centering adjustment efficiency in the middle sector section of existing composite continuous casting machines, the centering device for the sector section includes: a sector section support (1), a measuring frame support (2), and an arc template assembly (3). The measuring frame support (2) includes a final roll measuring frame support (21) and a first roll measuring frame support (22). A final roll measuring frame (23) is installed on the final roll measuring frame support (21), and a first roll measuring frame (24) is installed on the first roll measuring frame support (22). This device saves the clamping time required for various tooling and measuring instruments in the prior art for centering adjustment. The main drawback is that the height of the first and final roll measuring frames is relatively high, and even a slight tilt of the first and final roll measuring frame support will amplify the measurement error. This method cannot meet the standard adjustment accuracy requirements for the arc sector section.

[0007] Comparative Data 3: A centering device for the sector section of a non-standard billet continuous casting machine

[0008] This utility model discloses a centering device for the sector section of a shaped billet continuous casting machine, belonging to the field of continuous casting machine technology. To solve the problem of low roller centering adjustment efficiency in the existing sector section of shaped billet continuous casting machines, the centering device for the sector section includes: a sector section support (1), an arc template assembly (2), and a template support seat (3). When the arc template assembly (2) passes through the billet channel (51) of the sector section (5), both the front and rear ends of the arc template assembly (2) are located outside the sector section (5), and there is a gap between the arc template assembly (2) and the support roller (52) of the sector section (5), which can be measured. The centering device for the sector section of the shaped billet continuous casting machine can simultaneously center the eight rollers of the sector section, is simple to operate, and can improve centering efficiency. However, it is not suitable for the adjustment and measurement of the sector section of our continuous casting machine. Summary of the Invention

[0009] To address the issue that the current fan-shaped segment centering device of the continuous casting machine has a magnified measurement error, which cannot meet the standard adjustment accuracy requirements of the arc-shaped fan segment, an offline arc-alignment method for the irregular billet continuous casting support frame has been invented. This invention uses a laser tracker to adjust the relative elevation of the first and last rolls of the fan segment to the design standard range, based on the centering platform base plate adjusted to the standard state.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] This invention discloses an offline arc alignment method for a continuous casting support frame for irregularly shaped billets. The measurement process is as follows: the sector segment to be adjusted is hoisted onto the centering platform adjusted to the standard state; a laser tracker control network is set up; the laser tracker is set up at the first station to measure the reference plane and the first roll; the laser tracker is set up at the second station to measure the last roll; a coordinate system is established with the reference plane and the horizontal ground plane as references; the measurement radius and center height of the first roll and the last roll are determined under this coordinate system; the relative height of the top surface of the first roll and the last roll is calculated; and the adjustment amount is calculated.

[0012] Furthermore, a laser tracker control network is set up, with at least four control points attached to ensure that all instrument installation locations have a line of sight to the attached control points.

[0013] Furthermore, a laser tracker is set up at the first station to ensure that all control points are visible. The tracker is leveled, calibrated, and a ground level is established. The reference plane and the first roller are measured. The reference plane is measured as a surface with at least four measuring points. The two sides of the first roller are measured as two cylinders, namely the first cylinder and the second cylinder.

[0014] Furthermore, using the deployed control network, the laser tracker is set up at the second station, with a view of the stable ground of the final roller and all control points. The final roller is measured, and the two sides of the final roller are measured as two cylinders, namely the third cylinder and the fourth cylinder.

[0015] Furthermore, in the aforementioned coordinate system, the measuring radius of the first cylinder is R. 2.1 The center height is Z. 2.1 Similarly, the measuring radius of the second cylinder is R. 2.2 The center height is Z. 2.2 The measuring radius of the third cylinder is R. 3.1 The center height is Z. 3.1 Similarly, the measuring radius of the fourth cylinder is R. 3.2 The center height is Z. 3.2 Below, the measuring radius of the first cylinder is R. 2.1 The center height is Z. 2.1 Similarly, the measuring radius of the second cylinder is R. 2.2 The center height is Z. 2.2 The measuring radius of the third cylinder is R. 3.1 The center height is Z. 3.1 Similarly, the measuring radius of the fourth cylinder is R. 3.2 The center height is Z. 3.2 .

[0016] Furthermore, the relative height of the top surface of the first roll is calculated, where the relative heights of the two sides of the first roll are R and R, respectively. 2.1 +Z 2.1 and R 2.2 +Z 2.2 Similarly, calculate the relative height of the top surface of the last roller, where the relative heights on both sides of the last roller are R. 3.1 +Z 3.1 and R 3.2 +Z 3.2 .

[0017] Furthermore, the adjustment amounts are calculated: the adjustment amounts on both sides of the first roller are R... 2.1 +Z 2.1 -Z2 and R 2.2 +Z 2.2 -Z2, similarly, the adjustment amounts on both sides of the end roller are R respectively. 3.1 +Z 3.1 -Z3 and R 3.2 +Z 3.2 -Z3.

[0018] Note: R 2.1 Let be the measuring radius of the first cylinder;

[0019] Z 2.1 The measured height of the center of the first cylinder relative to the reference plane;

[0020] R 2.2 The radius of the second cylinder is the measuring radius.

[0021] Z 2.2The measured height of the center of the second cylinder relative to the reference plane;

[0022] R 3.1 The radius of the third cylinder is the measuring radius.

[0023] Z 3.1 The measured height of the center of the third cylinder relative to the reference plane;

[0024] R 3.2 The radius of the fourth cylinder is the measuring radius.

[0025] Z 3.2 The measured height of the center of the fourth cylinder relative to the reference plane;

[0026] Z2 is the design height of the top surface of the first roller 2 relative to the reference plane;

[0027] Z3 is the design height of the top surface of the last roller 3 relative to the reference plane.

[0028] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0029] This invention measures both ends of the first and last rollers separately and performs radius compensation, making the measurement results closer to the actual arc. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of a sector segment in an offline arc-aligning method for a support frame of an irregularly shaped billet continuous casting.

[0032] Figure 2 This is a measurement position diagram for an offline arc alignment method of a support frame for continuous casting of irregularly shaped billets.

[0033] Explanation of reference numerals in the attached drawings: 1-Reference plane; 2-First roller; 2.1-First cylinder; 2.2-Second cylinder; 3-Last roller; 3.1-Third cylinder; 3.2-Fourth cylinder. Detailed Implementation

[0034] The implementation of the technical solution will be described in further detail below with reference to the accompanying drawings, so as to more clearly explain its structure and working principle.

[0035] As attached Figure 1 , 2 As shown, this invention is a method for offline arc alignment of a support frame for continuous casting of irregularly shaped billets. The measurement process is as follows:

[0036] ① Hoist the sector segment that needs adjustment onto the centering platform that has been adjusted to the standard position;

[0037] ② Set up a laser tracker control network and attach at least 4 control points to ensure that all instrument mounting positions have a line of sight to the attached control points;

[0038] ③ Set up the laser tracker at the first station (ensuring a clear view of all control points), level, calibrate, and establish a horizontal ground plane, and measure the reference plane 1 and the first roller 2. The reference plane 1 is measured as a surface with at least 4 measuring points; the first roller 2 is measured as two cylinders on both sides, namely the first cylinder 2.1 and the second cylinder 2.2.

[0039] ④ Using the deployed control network, the laser tracker is set up at the second station, with a view of the stable ground of the last roller 3 and all control points. The last roller 3 is measured, and the two sides of the last roller 3 are measured as two cylinders, namely the third cylinder 3.1 and the fourth cylinder 3.2.

[0040] ⑤ Establish a coordinate system based on datum plane 1 and the geodetic horizontal plane;

[0041] ⑥ In this coordinate system, the measuring radius of the first cylinder 2.1 is R. 2.1 The center height is Z. 2.1 Similarly, the measuring radius of the second cylinder 2.2 is R. 2.2 The center height is Z. 2.2 The measuring radius of the third cylinder 3.1 is R. 3.1 The center height is Z. 3.1 Similarly, the measuring radius of the fourth cylinder 3.2 is R. 3.2 The center height is Z. 3.2 ;

[0042] ⑦ Calculate the relative height of the top surface of the first roll, where the relative heights of the two sides of the first roll are R and R, respectively. 2.1 +Z 2.1 and R 2.2 +Z 2.2 Similarly, calculate the relative height of the top surface of the last roller, where the relative heights on both sides of the last roller are R. 3.1 +Z 3.1 and R 3.2 +Z 3.2 ;

[0043] ⑧ Calculate the adjustment amount: The adjustment amounts on both sides of the first roller are R... 2.1 +Z 2.1 -Z2 and R 2.2 +Z 2.2 -Z2, similarly, the adjustment amounts on both sides of the end roller are R respectively. 3.1 +Z 3.1 -Z3 and R 3.2 +Z 3.2 -Z3.

[0044] Note: R 2.1 The measuring radius of the first cylinder is 2.1;

[0045] Z 2.1 The measured height of the center of the first cylinder 2.1 relative to the reference plane 1;

[0046] R 2.2 The measuring radius of the second cylinder is 2.2.

[0047] Z 2.2 The measured height of the center of the second cylinder 2.2 relative to the reference plane 1;

[0048] R 3.1 The measuring radius of the third cylinder is 3.1;

[0049] Z 3.1 The measured height is relative to the center of the third cylinder 3.1.

[0050] R 3.2 The measuring radius of the fourth cylinder is 3.2.

[0051] Z 3.2 The measured height is relative to the center of the fourth cylinder 3.2, which is the reference plane 1.

[0052] Z2 is the design height of the top surface of the first roller 2 relative to the reference plane 1;

[0053] Z3 is the design height of the top surface of the last roller 3 relative to the reference plane 1.

[0054] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for offline arc alignment of a support frame for continuous casting of irregularly shaped billets, characterized in that: The measurement process is as follows: hoist the sector segment that needs to be adjusted onto the centering platform that has been adjusted to the standard state; set up the laser tracker control network; set up the laser tracker at the first station to measure the reference plane and the first roll; set up the laser tracker at the second station to measure the last roll; establish a coordinate system with the reference plane and the horizontal plane of the earth as the reference; and determine the measurement radius and center height of the first roll and the last roll under this coordinate system. Calculate the relative height of the top surfaces of the first and last rolls; calculate the adjustment amount.

2. The method for offline arc alignment of the support frame for continuous casting of irregularly shaped billets according to claim 1, characterized in that: Set up a laser tracker control network and attach at least four control points to ensure that all instrument mounting locations have a line of sight to the attached control points.

3. The method for offline arc alignment of the support frame for continuous casting of irregularly shaped billets according to claim 2, characterized in that: Set up a laser tracker at the first station to ensure that all control points are visible. Level, calibrate and establish the earth level plane. Measure the reference plane (1) and the first roller (2). The reference plane (1) is measured as a surface with at least 4 measuring points. The two sides of the first roller (2) are measured as two cylinders, namely the first cylinder (2.1) and the second cylinder (2.1).

4. The method for offline arc alignment of the support frame for continuous casting of irregularly shaped billets according to claim 3, characterized in that: Using the deployed control network, the laser tracker was set up at the second station, with a view of the stable ground of the end roller (3) and all control points. The end roller (3) was measured, and the two sides of the end roller (3) were measured as two cylinders, namely the third cylinder (3.1) and the fourth cylinder (3.2).

5. The method for offline arc alignment of the support frame for continuous casting of irregularly shaped billets according to claim 3, characterized in that: In the aforementioned coordinate system, the measuring radius of the first cylinder (2.1) is R. 2.1 The center height is Z. 2.1 Similarly, the measuring radius of the second cylinder (2.1) is R. 2.2 The center height is Z. 2.2 The measuring radius of the third cylinder (3.1) is R. 3.1 The center height is Z. 3.1 Similarly, the measuring radius of the fourth cylinder (3.2) is R. 3.2 The center height is Z. 3.2 Below, the measuring radius of the first cylinder (2.1) is R. 2.1 The center height is Z. 2.1 Similarly, the measuring radius of the second cylinder (2.1) is R. 2.2 The center height is Z. 2.2 The measuring radius of the third cylinder (3.1) is R. 3.1 The center height is Z. 3.1 Similarly, the measuring radius of the fourth cylinder (3.2) is R. 3.2 The center height is Z. 3.2 .

6. The method for offline arc alignment of the continuous casting support frame for irregularly shaped billets according to claim 5, characterized in that: Calculate the relative height of the top surface of the first roll, where the relative heights of the two sides of the first roll are R and R, respectively. 2.1 +Z 2.1 and R 2.2 +Z 2.2 Similarly, calculate the relative height of the top surface of the last roller, where the relative heights on both sides of the last roller are R. 3.1 +Z 3.1 and R 3.2 +Z 3.2 .

7. The method for offline arc alignment of the support frame for continuous casting of irregularly shaped billets according to claim 6, characterized in that: Calculate the adjustment amount: The adjustment amounts on both sides of the first roller are R. 2.1 +Z 2.1 -Z2 and R 2.2 +Z 2.2 -Z2, similarly, the adjustment amounts on both sides of the end roller are R respectively. 3.1 +Z 3.1 -Z3 and R 3.2 +Z 3.2 -Z3. Note: R 2.1 Let be the measuring radius of the first cylinder (2.1); Z 2.1 The measured height of the center of the first cylinder (2.1) relative to the reference plane (1); R 2.2 Let be the measuring radius of the second cylinder (2.1); Z 2.2 The measured height of the center of the second cylinder (2.1) relative to the reference plane (1); R 3.1 Let be the measuring radius of the third cylinder (3.1); Z 3.1 The measured height of the center of the third cylinder (3.1) relative to the reference plane (1); R 3.2 Let be the measuring radius of the fourth cylinder (3.2); Z 3.2 The measured height of the center of the fourth cylinder (3.2) relative to the reference plane (1); Z2 is the design height of the top surface of the first roller 2 relative to the reference plane (1); Z3 is the design height of the top surface of the last roller 3 relative to the reference plane (1).

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