A method for measuring the fixed-end centering distance of a continuous casting machine vibration table using a theodolite

Abstract

The application discloses a method for measuring the centering distance of a fixed end of a continuous casting machine vibration table by using a theodolite, belongs to the field of measurement, and is used for measuring the centering distance of a positioning block of the fixed end of the continuous casting machine vibration table. The method is measured by using the theodolite in cooperation with a micrometer and a tool. The application aims to provide a method for measuring the centering distance of the fixed end of the continuous casting machine vibration table by using the theodolite, to accurately complete the centering measurement work of the vibration table in the case of lacking a reference, and to find a reference line from the equipment body by using the theodolite in cooperation with the micrometer, so as to evaluate the wear condition of the positioning block of the fixed end of the vibration table.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of measurement, in particular to a method for measuring the fixed end centering distance of a continuous casting machine vibration table using a theodolite. BACKGROUND

[0002] Generally, the theodolite and ruler are used to measure the vibration table of the continuous casting machine according to the reference control point during installation of the equipment, but due to reasons such as foundation settlement, the reference is destroyed, and the theodolite cannot be used for normal construction measurement. In addition, when the ruler is used for measurement, it cannot be guaranteed that the ruler is horizontal or perpendicular to the axis, resulting in a large deviation in the measured value.

[0003] Comparative document 1: A round billet continuous casting machine crystallizer centering device and a centering method thereof

[0004] The present application discloses a round billet continuous casting machine crystallizer centering device and a centering method thereof, and belongs to the technical field of steelmaking continuous casting equipment. The centering device comprises an adjusting plate, a reference rod one and a reference rod two are vertically connected on the adjusting plate, a positioning rod is connected at both ends of the adjusting plate, a thimble is connected on the reference rod two, a nut is connected on the thimble, a fixed plate is further connected below the adjusting plate, a connecting plate one and a connecting plate two are respectively connected at one end of the fixed plate and the adjusting plate, and the connecting plate one and the connecting plate two are connected through an adjusting screw. When the present application is used, the extension length of the thimble is adjusted by rotating the nut, so that the distance from the tip of the thimble to the reference rod one is L, then the adjusting screw is adjusted, so that the thimble hits the outer arc side inner wall of the round billet continuous casting machine crystallizer, finally the mounting shaft sleeve of the round billet continuous casting machine crystallizer is locked, and the centering is completed. The present application is suitable for centering adjustment of round billet continuous casting machine crystallizers of various specifications, is accurate in centering, convenient to operate, low in cost, and strong in practicality. The present application is not aimed at vibration table centering measurement, does not use a theodolite for centering measurement, and uses a device to measure the continuous casting machine crystallizer.

[0005] Comparative document 2: A laser centering measurement system and a centering measurement method thereof

[0006] A laser alignment measurement system and method are disclosed. The system includes: a lower alignment fixture, which is installed on two diagonally distributed fuel guide pins on a lower in-core component through two lower pin positioning holes and performs alignment measurement through lower measurement holes; an upper alignment fixture, which is installed on two cotter pin holes on an upper core plate on an upper in-core component through two upper pin positioning holes and performs alignment measurement through upper measurement holes; and a laser tracker, installed inside the reactor cavity formed by the upper and lower in-core components and at the same horizontal level. The system uses 3D graphics measurement software of the laser tracker to perform 3D measurements on the upper and lower measurement holes, acquires measurement data for all preset measurement positions of the upper and lower in-core components, and establishes a reference coordinate system for the in-core components to analyze and compare the measurement data, thereby obtaining the alignment measurement result for the in-core components. This invention does not address shaking table alignment measurement or use a theodolite for alignment measurement; instead, it uses a device to measure alignment.

[0007] Comparative Data 3: A Symmetry Measurement Device

[0008] This invention relates to the field of symmetry measurement technology and discloses a symmetry measurement device, including upper and lower cylinder mounting plates, with upper and lower cylinders fixedly connected to the bottom of the mounting plates. This invention has the following advantages and effects: By setting up a probe, a stop block, upper and lower cylinders, a go gauge, and a centering head, when using this device, after the product is transported to this station, the upper and lower cylinders drive the outer ring measuring support block to push the product to the measurement position. After the workpiece is in place, the upper measuring mechanism moves down, and the go gauge and centering head position the end face and inner hole of the product. The upper and lower cylinders rise, driving the chain and push head to release the spring test frames on both sides. The probes on both sides, driven by the spring test frames, contact the outer diameter of the workpiece for measurement, taking the first value. Then, the upper and lower cylinders descend, opening the elastic test frames to both sides, thus achieving convenient measurement and improving the problems of low efficiency and susceptibility to worker skill levels. This invention does not address centering measurement using a vibration table or a theodolite; it uses a device to measure centering. Summary of the Invention

[0009] The purpose of this invention is to provide a method for measuring the centering distance of the fixed end of a continuous casting machine vibration table using a theodolite. This method accurately completes the centering measurement of the vibration table when a reference is missing. The theodolite is used in conjunction with a micrometer to find the reference line from the equipment body to evaluate the wear condition of the positioning block at the fixed end of the vibration table.

[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 centering distance of a fixed end of a vibration table in a continuous casting machine using a theodolite, comprising a lower fixture and an upper fixture. The lower fixture is primarily used for measuring the centering distance of the lower positioning block of the vibration table, while the upper fixture is primarily used for measuring the centering distance of the upper positioning block of the vibration table. The lower fixture includes a lower support, a lower micrometer roller, and a tubular bubble level. The upper fixture includes an upper support, an upper micrometer roller, and a tubular bubble level. The upper support and upper micrometer roller of the upper fixture are longer than those of the lower fixture.

[0012] The support frame is mainly used for aligning the position and providing a platform for the micrometer roller; the micrometer roller is mainly used in conjunction with the theodolite to read the centering distance; the tube level bubble is used to help adjust the level of the support frame;

[0013] The measurement steps are as follows:

[0014] Clean the surface of the object to be tested: positioning blocks and shaft holes;

[0015] Locate the center point of the shaft hole and mark it;

[0016] Set up the theodolite on a stable ground in the direction of the axis of the shaft hole, and make sure that the theodolite is aligned with the axis. Then, rotate the theodolite horizontally to lock it and set it to zero.

[0017] Place the customized bracket in the appropriate position on the positioning block, and adjust the position of the bracket with a ruler so that a = b. At the same time, add shims to the bottom of both ends of the upper bracket to center the bubble of the tube level on the bracket. Place the micrometer roller on the bracket and adjust the length of the micrometer roller to make it in close contact with the positioning block. Use a theodolite to read the micrometer scale value of the aiming part and record it.

[0018] Refer to the design value of the centering distance of the positioning block in the drawings; calculate the deviation value.

[0019] Furthermore, the specific measurement steps are as follows:

[0020] (1) Clean the surface of the object to be tested: first positioning block, second positioning block, third positioning block, fourth positioning block and first shaft hole, second shaft hole;

[0021] (2) Locate the center points of the first and second shaft holes and mark them;

[0022] (3) Set up the theodolite on a stable ground in the direction of the axis hole, and make the theodolite and the axis in a centered state. Rotate the theodolite horizontally to lock it and set it to zero.

[0023] (4) Place the customized upper bracket in the appropriate position of the first positioning block, and adjust the position of the upper bracket with the ruler so that a = b. At the same time, add shims to the bottom of both ends of the upper bracket to make the tube level bubble on the upper bracket centered.

[0024] (5) Put the micrometer on the upper support, adjust the length of the micrometer to make it in close contact with the first positioning block;

[0025] (6) Read the scale value of the micrometer at the aiming position using the theodolite, and record it;

[0026] (7) Repeat the process of steps (4) to (6), measure the four measuring points of the first positioning block according to the distribution of the measuring points, and record the measuring values, and take the average of the four measuring values as y 1.1 ;

[0027] (8) Similarly, according to the process of steps (4) to (7), the centering distance of the third positioning block is measured using the lower tooling, and is recorded, and the average of the four measuring values is taken as y 1.3 ;

[0028] (9) Similarly, according to the process of steps (4) to (8), the centering distances of the second positioning block and the fourth positioning block are measured, and are recorded, and the average of the four measuring values of the second positioning block is taken as y 1.2 , and the average of the four measuring values of the fourth positioning block is taken as y 1.4 ;

[0029] (10) According to the design values of the centering distances of the third positioning block and the fourth positioning block in the drawings, the design values of the centering distances of the first positioning block and the second positioning block are y a , and the design values of the centering distances of the first positioning block and the second positioning block are y b ;

[0030] (11) Calculate the deviation values: the deviation value of the first positioning block is y 1.1 -y b ; the deviation value of the second positioning block is y 1.2 -y b ; the deviation value of the third positioning block is y 1.3 -y a ; and the deviation value of the fourth positioning block is y 1.4 -y a .

[0031] Compared with the prior art, the beneficial technical effects of the present application are:

[0032] The present application can solve the problem of missing centering measurement reference of the continuous casting machine vibration table, the measurement process is simple, and the actual wear condition of the equipment can be accurately reflected. BRIEF DESCRIPTION OF DRAWINGS

[0033] The present application will be further described below in conjunction with the drawings.

[0034] Figure 1 It is a total view of the vibration table for the method of using the theodolite to measure the centering distance of the fixed end of the continuous casting machine vibration table.

[0035] Figure 2 Another angle view of the vibration table for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table;

[0036] Figure 3 The measurement tool and equipment cooperation use diagram for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table;

[0037] Figure 4 The measurement tool schematic diagram for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table;

[0038] Figure 5 Another measurement tool schematic diagram for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table;

[0039] Figure 6 The measurement tool position schematic diagram for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table.

[0040] Figure 7 The fixed end view of the vibration table for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table;

[0041] Figure 8 The vibration table axis schematic diagram for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table;

[0042] Figure 9 The measurement point schematic diagram for the method of using the theodolite to measure the fixed end centering distance of the continuous casting machine vibration table.

[0043] The marks in the drawings: 1.1, first positioning block; 1.2, second positioning block; 1.3, third positioning block; 1.4, fourth positioning block; 2.1, first shaft hole; 2.2, second shaft hole; 3, theodolite; 4, center line; 5.1, lower support; 5.2, upper support; 6.1, lower micrometer bar; 6.2, upper micrometer bar; 7, tube level bubble. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings Figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9 to make a further detailed description of the implementation of the technical solutions, in order to more clearly and clearly describe its structure and working principle.

[0045] A method for measuring the centering distance of a fixed end of a continuous casting machine vibration table using a theodolite. The tooling used in this method includes a lower tooling and an upper tooling. The lower tooling is mainly used for measuring the centering distance of the third positioning block 1.3 and the fourth positioning block 1.4, while the upper tooling is mainly used for measuring the centering distance of the first positioning block 1.1 and the second positioning block 1.2. The difference between the two is that the support and upper micrometer roller of the upper tooling are longer than those of the lower tooling. The lower tooling includes: a lower support 5.1, a lower micrometer roller 6.1, and a tube level bubble 7; the upper tooling includes: an upper support 5.2, an upper micrometer roller 6.2, and a tube level bubble 7. The support 5 is mainly used for aligning the position and providing a platform for the micrometer roller; the micrometer roller 6 is mainly used to assist the theodolite in reading the centering distance; and the tube level bubble 7 is used to assist in adjusting the horizontal state of the support.

[0046] The specific implementation method of the measurement method of the present invention is as follows:

[0047] (1) Clean the surface of the object to be tested: first positioning block 1.1, second positioning block 1.2, third positioning block 1.3, fourth positioning block 1.4 and first shaft hole 2.1, second shaft hole 2.2;

[0048] (2) Use tools such as a plumb bob and ruler to find the center point of the first shaft hole 2.1 and the second shaft hole 2.2, and mark them;

[0049] (3) Set up the theodolite on a stable ground in the direction of the axis of the shaft hole, and make the theodolite and the axis in a centered state. Rotate the theodolite 3 horizontally to lock it and set it to zero.

[0050] (4) Place the customized upper bracket 5.2 in the appropriate position on the first positioning block 1.1, and use a ruler as a guide. Figure 6 As shown, adjust the position of the upper bracket 5.2 so that a = b, and at the same time, add shims to the bottom of both ends of the upper bracket 5.2 to center the tube level bubble 7 on the upper bracket 5.2;

[0051] (5) Place the upper micrometer roller 6.2 on the upper bracket 5.2 and adjust the length of the upper micrometer roller 6.2 so that it is in close contact with the first positioning block 1.1;

[0052] (6) Use the theodolite 3 to read the 6.2 micrometer scale value of the aiming point and record it;

[0053] (7) Repeat steps (4) to (6), following the steps... Figure 9 The distribution of measuring points is determined by measuring the four measuring points of the first positioning block 1.1, recording the measured values, and averaging the four measured values ​​as y. 1.1 ;

[0054] (8) Similarly, the centering distance of the third positioning block 1.3 is measured using the lower tooling according to the process of (4) to (7), and the four measurements are recorded and averaged as y 1.3 ;

[0055] (9) Similarly, the centering distance of the second positioning block 1.2 and the fourth positioning block 1.4 is measured according to the process of (4) to (8), and the four measurements are recorded and averaged as y 1.2 for the second positioning block 1.2 and y 1.4 for the fourth positioning block 1.4.

[0056] (10) According to the drawings, the centering distance of the third positioning block 1.3 and the fourth positioning block 1.4 is designed as y a , and the centering distance of the first positioning block 1.1 and the second positioning block 1.2 is designed as y b .

[0057] (11) Calculate the deviation value: the deviation value of the first positioning block 1.1 is y 1.1 -y b ; the deviation value of the second positioning block 1.2 is y 1.2 -y b ; the deviation value of the third positioning block 1.3 is y 1.3 -y a ; and the deviation value of the fourth positioning block 1.4 is y 1.4 -y a .

[0058] The above-described embodiments are only to describe the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A method for measuring the centering distance of a fixed end of a vibration table in a continuous casting machine using a theodolite, characterized in that, Includes lower tooling and upper tooling; The lower fixture is mainly used for measuring the centering distance of the lower positioning block of the vibration table, and the upper fixture is mainly used for measuring the centering distance of the upper positioning block of the vibration table. The lower fixture includes a lower support, a lower micrometer roller, and a tubular bubble level. The upper fixture includes an upper support, an upper micrometer roller, and a tubular bubble level. The upper support and the upper micrometer roller of the upper fixture are longer than those of the lower fixture. The support frame is mainly used for aligning the position and providing a platform for the micrometer roller; the micrometer roller is mainly used in conjunction with the theodolite to read the centering distance; the tube level bubble is used to help adjust the level of the support frame; The measurement steps are as follows: Clean the surface of the object to be tested: positioning blocks and shaft holes; Locate the center point of the shaft hole and mark it; Set up the theodolite on a stable ground in the direction of the axis of the shaft hole, and make sure that the theodolite is aligned with the axis. Then, rotate the theodolite horizontally to lock it and set it to zero. Place the customized bracket at the appropriate position on the positioning block, and adjust the position of the bracket with a ruler to make a=b. At the same time, add shims to the bottom of both ends of the upper bracket to center the bubble of the tube level on the bracket. Place the micrometer roller on the bracket and adjust the length of the micrometer roller to make it in close contact with the positioning block. Use a theodolite to read the micrometer roller scale value of the aiming part and record it. Refer to the design value of the centering distance of the positioning block in the drawings; calculate the deviation value; The specific measurement steps are as follows: (1) Clean the surface of the object to be tested: first positioning block (1.1), second positioning block (1.2), third positioning block (1.3), fourth positioning block (1.4) and first shaft hole (2.1), second shaft hole (2.2); (2) Locate and mark the center points of the first shaft hole (2.1) and the second shaft hole (2.2); (3) Set up the theodolite (3) on the ground in the direction of the axis of the shaft hole, and make the theodolite (3) and the axis in the center state. Rotate the theodolite (3) horizontally to lock it and set it to zero. (4) Place the customized upper bracket (5.2) in the appropriate position of the first positioning block (1.1), and adjust the position of the upper bracket (5.2) with the help of the ruler so that a=b. At the same time, add shims to the bottom of both ends of the upper bracket (5.2) to make the tube level bubble (7) on the upper bracket (5.2) centered. (5) Place the upper millimeter roller (6.2) on the upper support (5.2) and adjust the length of the upper millimeter roller (6.2) so that it is in close contact with the first positioning block (1.1); (6) Use the theodolite (3) to read the scale value of the thousandths roller (6.2) on the aiming point and record it; (7) Repeat steps (4) to (6) to measure the four measuring points of the first positioning block (1.1) according to the distribution of measuring points, and record the measured values. Calculate the average of the four measured values ​​and record it as y. 1.1 ; (8) Similarly, following the process from step (4) to step (7), use the lower tooling to measure and record the centering distance of the third positioning block (1.3). Calculate the average of the four measurements and record it as y. 1.3 ; (9) Similarly, following steps (4) to (8), measure and record the centering distance between the second positioning block (1.2) and the fourth positioning block (1.4). Calculate the average of the four measurements of the second positioning block (1.2) and record it as y. 1.2 The average of the four measurements of the fourth positioning block (1.4) is denoted as y. 1.4 ; (10) Check the design value of the centering distance of the third positioning block (1.3) and the fourth positioning block (1.4) in the drawing. a The design value of the centering distance between the first positioning block (1.1) and the second positioning block (1.2) is y. b ; (11) Calculate the deviation value: Deviation value of the first positioning block (1.1): y 1.1 -y b The deviation value of the second positioning block (1.2) is: y 1.2 -y b The deviation value of the third positioning block (1.3) is: y 1.3 -y a ; Deviation value of the fourth positioning block (1.4): y 1.4 -y a .

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