A method for measuring the base of a bloom caster puller

Abstract

This invention discloses a method for measuring the base of a straightening machine for a continuous casting machine with irregular billets. The measurement process is as follows: A laser tracker is set up to measure the bottom surface of the straightening machine, the two sides of the three lower support trunnions and the second-strut support adjusted to standard conditions; a coordinate system is established; the elevation of the sprue position on the bottom plate of the straightening machine is calculated based on the design drawings of the straightening machine; the design coordinate values ​​of the elevation evaluation points of the bottom plate of the straightening machine are written down; all elevation evaluation points of the straightening machine base that have an angle with the horizontal plane of the ground are created in the measurement software; the distance from the elevation evaluation points of the straightening machine base to the corresponding bottom plate of the straightening machine is measured using the measurement software. The purpose of this invention is to provide a method for measuring the base of a straightening machine for a continuous casting machine with irregular billets. This invention uses a laser tracker for measurement, and calculates the centerline position of the sprue of the straightening machine by connecting the adjusted three lower support trunnions. Then, the actual elevation of the bottom plate at the position of the line connecting the centerlines of the sprue is calculated using the calculated centerline of the sprue.

Description

Technical Field

[0001] This invention belongs to the field of measurement technology, and in particular relates to a method for measuring the base of a straightening machine for a continuous casting machine with irregular billets. Background Technology

[0002] Baogang's special-shaped billet continuous casting machine straightening machine uses a base plate and baffles in the casting flow direction to position the straightening machine. The base plates of the first to third straightening machines have a designed angle with the horizontal plane. However, due to severe corrosion of the baffles in the casting flow direction, it is impossible to accurately measure the elevation of the straightening machine base plate at this position. Corrosion also exists at the sprue position, making it impossible to accurately measure the elevation of the straightening machine base plate. Therefore, the current method is to directly measure the elevation of the upper and lower roller surfaces of the continuous casting machine straightening machine using a level instrument. For example, a tool for measuring the arc of the continuous casting machine straightening machine is used, which uses a level instrument in conjunction with a specially made leveling rod to complete the adjustment and measurement of the straightening machine elevation.

[0003] Comparative Reference 1 (CN202310600371.2): A tool for measuring the arc of a continuous casting machine straightening machine.

[0004] This invention provides a tool for measuring the arc deviation of a continuous casting machine straightening machine, belonging to the technical field of measuring tools. The invention includes: a square frame with a V-shaped groove at its bottom for contacting the arc of the lower roller surface of the straightening machine; a steel ruler mounted on the side of its front face; a horizontal scale located inside the lower crossbeam of the square frame; and a vertical scale located outside the upper crossbeam of the square frame. This invention can accurately measure arc deviation, significantly reducing the difficulty of inspection, improving efficiency, and saving maintenance time. However, this method cannot accurately measure the elevation of the straightening machine's base plate, and its measurement accuracy is relatively low.

[0005] Comparative Reference 2 (CN201822221616.8): A Device for Detecting the Elevation of the Lower Roller of an Offline Tension Straightening Machine

[0006] This invention discloses a device for detecting the elevation of the lower roller of an offline straightening machine. The device comprises a detection platform, a horizontal template, and a feeler gauge. The detection platform includes a base with several horizontal support seats on its top. The upper surfaces of all the horizontal support seats together form a platform for horizontally placing the offline straightening machine. Two columns are respectively installed at the left and right ends of the top of the base, and their upper surfaces together form a template platform for horizontally placing the horizontal template. The distance between the template platform and the straightening machine platform corresponds to the standard elevation of the upper end face of the lower roller of the offline straightening machine. The horizontal template is horizontally placed on the template platform of the detection platform. The feeler gauge is used to detect the distance between the upper end face of the lower roller of the straightening machine and the lower surface of the horizontal template when the offline straightening machine is placed on the platform. This invention has the advantage of ensuring the maintenance quality of the offline straightening machine; however, this method cannot accurately measure the elevation of the machine's base plate.

[0007] Comparative Reference 3 (CN201610779304.1): A Multifunctional Testing Device and Method for a Single-Frame Tension Straightening Machine

[0008] This invention discloses a multi-functional testing device and method for a single-stand tension leveling machine, including a testing platform, a hydraulic drive mechanism for the tension leveling machine, and a hydraulic control unit. The testing platform includes an H-beam base, with a support seat on the upper surface of the base and a pad mounted on the support seat. A column is also provided on the base, with a guide rail on the column. The height of the guide rail is adjusted by shims so that the height difference between the guide rail and the pad matches the height difference from the surface of the lower roller of the single-stand tension leveling machine to the bottom of the frame of the tension leveling machine. An interface corresponding to the tension leveling machine is also provided on the base. This invention has the advantages of centralized site access, time saving, and cost saving, facilitating offline maintenance of the single-stand tension leveling machine. However, this method cannot accurately measure the elevation of the bottom plate of the tension leveling machine. Summary of the Invention

[0009] To address the current problem that severe corrosion at the casting flow direction baffle and nozzle position prevents accurate measurement of the leveling machine base plate elevation, forcing the direct measurement of the upper and lower roller surfaces of the continuous casting machine leveling machine using a level, this invention provides a method for measuring the base of a shaped billet continuous casting machine leveling machine. This invention uses a laser tracker to measure the centerline position of the leveling machine nozzle by connecting the three adjusted lower support trunnion columns. Then, the actual elevation of the base plate at the position of the nozzle centerline is calculated using the inversely calculated centerline of the leveling machine nozzle.

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

[0011] This invention discloses a method for measuring the base of a straightening machine for a continuous casting machine with irregular billets. The measurement process is as follows: A laser tracker is set up to measure the bottom surface of the straightening machine, the two sides of the three-section lower support trunnion and the second-strut support adjusted to standard conditions; a coordinate system is established; the elevation of the sprue position on the bottom plate of the straightening machine is calculated based on the design drawings of the straightening machine; the design coordinate values ​​of the elevation evaluation points of the bottom plate of the straightening machine are written down; all elevation evaluation points of the straightening machine base that have an angle with the horizontal plane of the ground are created in the measurement software; the distance from the elevation evaluation points of the straightening machine base to the corresponding bottom plate of the straightening machine is measured using the measurement software.

[0012] 2. The method for measuring the base of the straightening machine for a continuous casting machine with irregularly shaped billets according to claim 1, characterized in that it specifically includes:

[0013] ① Set up a laser tracker to measure the bottom surface of the tension leveler and adjust the three-section lower support trunnion and the two sides of the second-flow support to the standard state;

[0014] ②Establish a coordinate system with the intersection of the lines connecting the mid-surfaces of the two sides of the second-stream support with the midpoints of the trunnion columns of the first and third-stream sections, the horizontal plane of the earth, and the lines connecting the midpoints of the trunnion columns of the first and third-stream sections as basic elements;

[0015] ③ Calculate the elevation of the sprue position of the base plate of the straightening machine according to the design drawings of the straightening machine. In order to measure the height difference of the base plate itself in the y-axis direction, set two elevation evaluation points in the y-axis direction of each base plate of the straightening machine.

[0016] ④ Calculate and mark the dimensions on the design drawings of the straightening machine, and write down the design coordinate values ​​(xabc, yabc, zabc) of the elevation evaluation points of the bottom plate of the straightening machine; where 'a' represents the number of the run, and this continuous casting machine has three runs, so the value of 'a' is in the range of 1 to 3; 'b' represents the number of the stand, and the bottom plates of the first to third stands of this continuous casting machine have an angle with the ground horizontal plane, while the fourth stand has a horizontal bottom plate and does not need to be calculated, so the value of 'b' is between 1 and 3; 'c' represents the elevation evaluation point number of the two bottom plates of each straightening machine.

[0017] ⑤ Create all elevation evaluation points for the base of the straightening machine that are at an angle to the horizontal plane of the earth in the measurement software;

[0018] ⑥ Use measurement software to measure the distance d from the elevation evaluation point of the base of the straightening machine to the corresponding base plate of the straightening machine.

[0019] Furthermore, the actual measured position of the base plate of the tension leveling machine is lower than the designed position, requiring the addition of shims.

[0020] Furthermore, if the actual measured position of the base plate of the tension leveler is higher than the designed position, then the shims need to be reduced.

[0021] Furthermore, a 5mm space for shims is reserved above the base plate of the straightening machine during the design process to allow for shim reduction.

[0022] Furthermore, compared with the method of measurement by a level instrument, the accuracy of this method is improved from 1 mm to 0.1 mm.

[0023] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0024] This invention uses a laser tracker for measurement, which significantly improves accuracy compared to the method of measuring with a level, reducing the accuracy from 1mm to 0.1mm. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a diagram showing the measurement points for a method of measuring the base of a straightening machine in a continuous casting machine for irregularly shaped billets.

[0027] Figure 2A coordinate system position diagram is established for a measurement method of the base of a straightening machine for a continuous casting machine with irregular billets.

[0028] Figure 3 This diagram illustrates the location of evaluation points for a straightening machine in a method for measuring the base of a straightening machine in a continuous casting machine for irregularly shaped billets.

[0029] Figure 4 Record of design dimensions of a straightening machine for measuring the base of a straightening machine in a continuous casting machine for irregularly shaped billets. Figure 1 .

[0030] Figure 5 Record of design dimensions of a straightening machine for measuring the base of a straightening machine in a continuous casting machine for irregularly shaped billets. Figure 2 .

[0031] Figure 6 This is a schematic diagram showing the location of the elevation evaluation points on the base plate of a straightening machine for measuring the base of a continuous casting machine for irregular billets.

[0032] Figure 7 A schematic diagram of the measured position of the base of a straightening machine for a continuous casting machine with irregular billets. Figure 1 .

[0033] Figure 8 A schematic diagram of the measured position of the base of a straightening machine for a continuous casting machine with irregular billets. Figure 2 .

[0034] Figure 9 This is a schematic diagram showing the location of the elevation evaluation points on the base plate of a straightening machine for measuring the base of a continuous casting machine for irregular billets. Detailed Implementation

[0035] 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.

[0036] As attached Figure 1 , 2 As shown in figures 3, 4, 5, 6, 7, 8, and 9, this invention provides a method for measuring the base of a straightening machine for a continuous casting machine with irregularly shaped billets. The measurement process is as follows:

[0037] ① Set up a laser tracker to measure the bottom surface of the tension leveler, the two sides of the three-section lower support trunnion and the second-flow support adjusted to the standard state. The measurement point diagram is shown below. Figure 1 ;

[0038] ②Establish a coordinate system using the intersection of the lines connecting the mid-surfaces of the two sides of the second-stream support with the midpoints of the trunnions of the first and third-stream sections, the horizontal plane of the earth, and the lines connecting the midpoints of the trunnions of the first and third-stream sections as basic elements. The location of the coordinate system is shown in [reference needed]. Figure 2 ;

[0039] ③ Calculate the elevation of the sprue position on the base plate of the leveling machine based on the design drawings. To measure the height difference of the base plate itself in the y-axis direction, such as... Figure 3 As shown, two elevation evaluation points are set in the y-axis direction of each tension leveling machine base plate;

[0040] ④ Calculate the dimensions from the design drawings of the tension leveling machine and mark them. Figure 4 , 5 Above, based on Figure 4 , 5 Write down the design coordinates (xabc, yabc, zabc) of the elevation evaluation point of the base plate of the straightening machine; where 'a' represents the flow number, and this continuous casting machine has three flows, so the value of 'a' is in the range of 1 to 3; 'b' represents the stand number, and the base plates of the first to third stands of this continuous casting machine have an angle with the ground horizontal plane, while the fourth stand has a horizontal base plate and does not need to be calculated, so the value of 'b' is directly between 1 and 3. Figure 6 As shown; 'c' represents the elevation evaluation point number of the two base plates of each leveling machine, such as... Figure 9 As shown;

[0041] ⑤ Create all elevation evaluation points for the base of the straightening machine that are at an angle to the horizontal plane of the earth in the measurement software;

[0042] ⑥ For example Figure 7 , 8 As shown, the distance d from the elevation evaluation point of the tension leveling machine base to the corresponding tension leveling machine base plate was measured using measurement software. Figure 7 The image shows a situation where the actual measured position of the base plate of the leveling machine is lower than the design position (i.e., the elevation evaluation point), requiring the addition of shims. Figure 8 The image shows a situation where the actual measured position of the base plate of the straightening machine is higher than the design position (i.e., the elevation evaluation point), requiring the reduction of shims (the design reserves 5mm of space for shims above the base plate of the straightening machine, which allows for the reduction of shims).

[0043] 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 measuring the base of a straightening machine in a continuous casting machine for irregularly shaped billets, characterized in that, The measurement process is as follows: A laser tracker is set up to measure the bottom surface of the straightening machine, the two sides of the three lower support trunnions and the two-stream support adjusted to standard conditions; a coordinate system is established; the elevation of the water inlet position on the bottom plate of the straightening machine is calculated based on the design drawings; the design coordinate values ​​of the elevation evaluation points of the bottom plate of the straightening machine are written down; all elevation evaluation points of the straightening machine base that are at an angle to the horizontal plane of the ground are created in the measurement software; the distance from the elevation evaluation points of the straightening machine base to the corresponding bottom plate of the straightening machine is measured using the measurement software.

2. The method for measuring the base of the straightening machine for a continuous casting machine with irregularly shaped billets according to claim 1, characterized in that, Specifically, it includes: ① Set up a laser tracker to measure the bottom surface of the tension leveler and adjust the three-section lower support trunnion and the two sides of the second-flow support to the standard state; ②Establish a coordinate system with the intersection of the lines connecting the mid-surfaces of the two sides of the second-stream support with the midpoints of the trunnion columns of the first and third-stream sections, the horizontal plane of the earth, and the lines connecting the midpoints of the trunnion columns of the first and third-stream sections as basic elements; ③ Calculate the elevation of the sprue position of the base plate of the straightening machine according to the design drawings of the straightening machine. In order to measure the height difference of the base plate itself in the y-axis direction, set two elevation evaluation points in the y-axis direction of each base plate of the straightening machine. ④ Calculate and mark the dimensions on the design drawings of the straightening machine, and write down the design coordinate values ​​(xabc, yabc, zabc) of the elevation evaluation points of the bottom plate of the straightening machine; where 'a' represents the number of the run, and this continuous casting machine has three runs, so the value of 'a' is in the range of 1 to 3; 'b' represents the number of the stand, and the bottom plates of the first to third stands of this continuous casting machine have an angle with the ground horizontal plane, while the fourth stand has a horizontal bottom plate and does not need to be calculated, so the value of 'b' is between 1 and 3; 'c' represents the elevation evaluation point number of the two bottom plates of each straightening machine. ⑤ Create all elevation evaluation points for the base of the straightening machine that are at an angle to the horizontal plane of the earth in the measurement software; ⑥ Use measurement software to measure the distance d from the elevation evaluation point of the base of the straightening machine to the corresponding base plate of the straightening machine.

3. The method for measuring the base of the straightening machine for a continuous casting machine with irregularly shaped billets according to claim 1, characterized in that, The actual measured position of the base plate of the tension leveling machine is lower than the designed position, requiring the addition of shims.

4. The method for measuring the base of the straightening machine for a continuous casting machine with irregularly shaped billets according to claim 1, characterized in that, If the actual measured position of the base plate of the tension leveling machine is higher than the designed position, then the shims need to be reduced.

5. The method for measuring the base of the straightening machine for a continuous casting machine with irregularly shaped billets according to claim 1, characterized in that, The design of the tension leveler includes a 5mm shim space above the base plate to allow for shim reduction.

6. The method for measuring the base of the straightening machine for a continuous casting machine with irregularly shaped billets according to claim 1, characterized in that, Compared with the method of measuring with a level, this method improves the accuracy from 1 mm to 0.1 mm.

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