Off-line device for calibrating continuous casting machine crystallizer arc connecting ruler

Abstract

An off-line device for calibrating an arc connecting ruler of a crystallizer of a continuous casting machine relates to the technical field of metallurgical detection equipment, and is characterized by comprising a fixed base, a rotating seat, a lifting nut, a frame fixing platform and a measuring roller fixing frame which are sequentially arranged from bottom to top, a thrust bearing is fixedly arranged in the fixed base, and a rotating pin shaft connected with the thrust bearing is fixedly arranged on the lower portion of the rotating base. A simulated crystallizer foot roller and a simulated zero-section roller which are used for simulating the position between the crystallizer foot roller and the zero-section roller on the continuous casting machine are arranged in the measuring roller fixing frame; a laser range finder is arranged on the left side of the measuring roller fixing frame; a gradienter is arranged on the upper edge of the frame fixing platform. Through the design of accurately simulating actual working conditions, the maintenance efficiency and accuracy of the arc connecting ruler of the continuous casting machine are remarkably improved, the product quality problem caused by inaccurate arc connecting is reduced, and a powerful guarantee is provided for continuous and stable production of the continuous casting machine.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical detection equipment, in particular to an off-line device for calibrating a continuous casting machine crystallizer arc ruler. Background Art

[0002] In the metallurgical industry, especially in the continuous operation environment of continuous casting machines, the crystallizer is a key component. Its frequent replacement (about every 7 to 10 days) places extremely high demands on production continuity and the quality of the final ingot. The correct installation of the crystallizer, especially the position accuracy of the crystallizer foot roller, is a key factor in controlling the shape of the ingot and preventing production defects. This process usually relies on the arc ruler as a measuring tool, based on the first and second rollers of the zero section of the continuous casting machine as a reference to ensure the accurate installation of the crystallizer foot roller. However, during the frequent use of the arc ruler, the wear of its pads has become a problem that cannot be ignored, resulting in a gradual decline in measurement accuracy and inaccurate arc positioning, which in turn affects the dimensional accuracy and surface quality of the ingot.

[0003] The current maintenance strategy for arc-jointing rulers mainly relies on regular manual inspections, which is time-consuming and inefficient. It is difficult to detect and correct small deviations caused by pad wear in a timely manner, which in turn increases the scrap rate caused by inaccurate arc joints. Although there are several calibration tools on the market that attempt to address this challenge, most of them do not provide a sufficiently sophisticated calibration mechanism, making it difficult to perform efficient and accurate calibration operations without interrupting the production process.

[0004] Therefore, there is an urgent need for an innovative offline calibration device that can perform high-precision correction for the mold foot roll positioning deviation caused by the wear of the arc-jointing scale pad without hindering production activities. The ideal device should be able to faithfully simulate the actual operating conditions, ensure that the offline calibration matches the measurement accuracy during online use, and be easy to operate, responsive and highly accurate, so as to improve the working efficiency of the continuous casting machine and the quality consistency of the cast product. Utility Model Content

[0005] In order to remedy the above-mentioned deficiencies, the utility model provides an offline device for calibrating the arc-joining scale of the crystallizer of a continuous casting machine, which aims to design an offline test frame according to the original crystallizer foot roller position and the first and second roller positions of the zero section of the continuous casting machine in a 1:1 ratio, completely simulating the online assembly state, and setting a horizontal correction function in the offline device to ensure the adjustment accuracy, meet the offline inspection of the arc-joining scale, avoid the error caused by the wear of the pad of the arc-joining scale, and ensure the arc-joining accuracy of the continuous casting machine equipment.

[0006] The utility model is realized through the following technical scheme: an off-line device for calibrating the arc-joining scale of a continuous casting machine crystallizer, characterized in that: it comprises a fixed base, a rotating base, a lifting nut, a frame fixing platform and a measuring roller fixing frame which are arranged in sequence from bottom to top; a thrust bearing for rotating the rotating base is fixedly arranged inside the fixed base, and a rotating pin connected to the thrust bearing is fixedly arranged at the lower part of the rotating base; a simulated crystallizer foot roller and a simulated zero-segment roller for simulating the position between the crystallizer foot roller and the zero-segment roller on the continuous casting machine are arranged inside the measuring roller fixing frame; a laser rangefinder for measuring the arc-joining scale deviation is arranged on the left side of the measuring roller fixing frame; and a level is arranged on the upper edge of the frame fixing platform.

[0007] Furthermore, the number of the lifting nuts is three and they are distributed in a triangle.

[0008] Furthermore, an upper dustproof sealing pad is provided between the fixed base and the rotating base.

[0009] Furthermore, a lower dustproof sealing pad is arranged between the rotating pin and the fixed base.

[0010] Beneficial effects and features of the utility model:

[0011] Significantly improve calibration accuracy: By adopting an offline test framework that accurately simulates the positions of the first and second rollers of the continuous casting machine and the crystallizer foot roller at a 1:1 ratio, a high degree of consistency between the calibration process and the actual production environment is ensured, effectively avoiding measurement errors caused by wear of the arc scale pads, significantly improving the positioning accuracy of the arc scale, and thus ensuring high standards for billet size and surface quality.

[0012] Improve production efficiency: The innovatively designed offline device can complete the calibration of the arc scale without interrupting the production line, greatly shortening the calibration cycle, avoiding the tedious and inefficient traditional periodic manual inspection, and significantly improving the continuous operation capacity and overall operating efficiency of the continuous casting machine.

[0013] Enhanced operational convenience and response speed: The laser rangefinder and electronic level integrated in the device provide fast and intuitive deviation measurement and correction methods, allowing operators to quickly identify and correct arc scale deviations, reducing operational difficulty and speeding up response speed.

[0014] Ensure long-term stability and durability: By setting upper and lower dustproof seals between the fixed base and the rotating base, external impurities are effectively isolated, wear is reduced, the service life of the device is extended, and maintenance costs are reduced.

[0015] Optimize flexibility and precise control of the calibration process: The triangular distribution of the lifting nuts not only ensures accurate horizontal adjustment of the frame fixing platform, but also enhances the stability of the device, making the adjustment operation more flexible and simple, ensuring that each calibration can achieve extremely high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0018] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 This is a schematic diagram of the use state of the utility model;

[0020] Figure 5 for Figure 4 Schematic diagram of the structure of the central arc ruler.

[0021] The main parts serial number description in the figure is as follows: 1. Measuring roller fixing frame; 2. Simulated zero-segment roller; 3. Laser rangefinder; 4. Lifting nut; 5. Rotating seat; 6. Fixed base; 7. Arc ruler; 8. Thrust bearing; 9. Lower dustproof sealing pad; 10. Level; 11. Upper dustproof sealing pad; 12. Electronic level; 13. Rotating pin; 14. Simulated crystallizer foot roller; 15. Arc ruler pad.

[0022] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. The other drawings obtained are all within the protection scope required by the utility model. DETAILED DESCRIPTION

[0023] The following combination Figure 1-5 , the contents of the utility model are described in detail through specific embodiments. Example

[0024] The device is configured from bottom to top with a fixed base 6, a rotating base 5, a lifting nut 4, a frame fixing platform and a measuring roller fixing frame 1. The fixed base is embedded with a thrust bearing 8 to support the rotating base to rotate freely. The lower part of the rotating base is connected to the thrust bearing through a rotating pin 13 to ensure smooth rotation. The measuring roller fixing frame is built with a simulated crystallizer foot roller 14 and a simulated zero-segment roller 2, whose size and layout are exactly the same as those of the actual continuous casting machine. The left side of the measuring roller fixing frame is equipped with a laser rangefinder 3 for accurately measuring the deviation of the arc ruler. A level 10 is installed on the top of the frame fixing platform to ensure the horizontal state of the entire device.

[0025] The measuring roller fixing frame is vertically fixed on the frame fixing platform. The cross-section of the measuring roller fixing frame is a U-shaped structure with an opening on the right side. The simulated crystallizer foot roller and the simulated zero-segment roller are horizontally arranged in the measuring roller fixing frame and are parallel to the frame fixing platform. A through hole for fixing a laser rangefinder is arranged on the left side of the measuring roller fixing frame to facilitate the laser rangefinder to measure the distance between the left side of the measuring roller fixing frame and the arc ruler.

[0026] In order to achieve a high level of precise positioning, the lifting nuts are distributed in a triangle, with a total of three, ensuring that the height adjustment of the frame fixing platform is accurate to the millimeter level, which is convenient for fine-tuning the horizontality. In addition, in order to prevent dust and other impurities from affecting the long-term stability and accuracy of the device, an upper dustproof seal 11 is specially set between the fixed base and the rotating base, and a lower dustproof seal 9 is configured between the rotating pin and the fixed base, which effectively improves the service life and reliability of the device.

[0027] At the operational level, the device is calibrated through the following steps: First, use three lifting nuts to adjust the spirit level until the bubble is centered to ensure that the device is in a completely horizontal state. Next, rotate the rotating seat 90°, adjust the lifting nuts again to maintain the position of the bubble in the center of the spirit level, and repeat this process until the optimal level is reached. Subsequently, fit the arc ruler pad 15 of the arc ruler to the right side of the simulated crystallizer foot roller and the simulated zero-segment roller, and monitor in real time through the electronic level equipped on the arc ruler. Ideally, the reading should be maintained within the range of ±1.5mm. Once this range is exceeded, it means that the arc ruler pad needs to be adjusted. At this time, the precise data provided by the laser rangefinder is used to correct the pad position, thereby restoring the original measurement accuracy of the arc ruler.

[0028] To sum up, the offline calibration device of this embodiment, by virtue of its design that accurately simulates actual working conditions, efficient level adjustment mechanism, and high-precision calibration process achieved through a laser rangefinder and an electronic level, significantly improves the maintenance efficiency and accuracy of the continuous casting machine's arc scale, reduces product quality problems caused by inaccurate arc connection, and provides a strong guarantee for the continuous and stable production of the continuous casting machine.

Claims

1. An off-line device for calibrating the arc ruler of a continuous casting machine, characterized in that: It comprises a fixed base, a rotating base, a lifting nut, a frame fixing platform and a measuring roller fixing frame which are arranged in sequence from bottom to top; a thrust bearing for rotating the rotating base is fixedly arranged inside the fixed base, and a rotating pin connected with the thrust bearing is fixedly arranged at the lower part of the rotating base; a simulated crystallizer foot roller and a simulated zero-segment roller for simulating the position between the crystallizer foot roller and the zero-segment roller on the continuous casting machine are arranged inside the measuring roller fixing frame; a laser rangefinder for measuring the deviation of the arc scale is arranged on the left side of the measuring roller fixing frame; a level is arranged on the upper edge of the frame fixing platform.

2. The off-line device for calibrating the arc ruler of the continuous casting machine crystallizer according to claim 1, characterized in that: The number of the lifting nuts is three and they are distributed in a triangle shape.

3. The off-line device for calibrating the arc ruler of the continuous casting machine crystallizer according to claim 1, characterized in that: An upper dustproof sealing pad is arranged between the fixed base and the rotating base.

4. The off-line device for calibrating the arc ruler of the continuous casting machine crystallizer according to claim 1, characterized in that: A lower dustproof sealing pad is arranged between the rotating pin shaft and the fixed base.

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