A quick replacement mechanism for a segment of a continuous casting machine

Abstract

The utility model relates to continuous casting machine fan -shaped section technical field discloses a kind of continuous casting machine fan -shaped section quick replacement mechanism, including first fan -shaped section, the inside thread connection of first fan -shaped section has connecting screw rod, the surface thread connection of connecting screw rod has second fan -shaped section;The front surface of first fan -shaped section is inserted with mounting card frame, the surface fixedly connected with positioning support board of mounting card frame, the inside insertion of positioning support board has limiting cross bar, the surface fixedly connected with limiting insert plate of limiting cross bar.The utility model is inserted in second fan -shaped section rear end by being set mounting card frame, and four-point symmetry positioning system is formed by cooperating positioning support board, double limiting is realized by limiting insert plate on the surface of limiting cross bar, limiting insert plate is contacted with the surface of first fan -shaped section and second fan -shaped section simultaneously, forms closed loop positioning constraint, effectively eliminates assembly gap, ensures the roll gap centering accuracy after new and old fan -shaped section replacement and the stability after equipment overall installation is finished.

Description

Technical Field

[0001] This utility model relates to the technical field of sector section of continuous casting machine, and in particular to a quick replacement mechanism for sector section of continuous casting machine. Background Technology

[0002] Continuous casting machines are key equipment in metallurgical engineering for the continuous casting of molten metal. They mainly consist of a ladle, tundish, crystallizer, secondary cooling device, and straightening machine. Continuous production is achieved through processes such as molten steel flowing from the ladle to the tundish, cooling in the crystallizer, secondary cooling, straightening, and cutting. Molten metal is poured from the ladle into the tundish, cooled in the crystallizer to form a billet, then cooled by a secondary cooling device to enhance heat dissipation, and finally straightened and cut into fixed-length billets by the straightening machine. Simplified process: Compared to traditional ingot casting, continuous casting connects steelmaking and rolling processes, reducing steps and energy consumption. High yield: Metal yield can reach 99.8%, an improvement of approximately 9% compared to traditional processes. Reduced energy consumption: Energy consumption is only 1 / 4 to 1 / 2 of that of traditional processes, while production efficiency is higher.

[0003] An existing quick-change mechanism for the sector section of a continuous casting machine makes it difficult for workers to ensure the stability of the sector section after installation during the actual installation process. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a quick-change mechanism for the sector section of a continuous casting machine.

[0005] This utility model is achieved by the following technical solution: a quick replacement mechanism for a sector section of a continuous casting machine, comprising a first sector section, wherein a connecting screw is internally threaded to the first sector section, and a second sector section is threaded to the surface of the connecting screw.

[0006] A mounting frame is inserted into the front of the first sector segment. A positioning support plate is fixedly connected to the surface of the mounting frame. A limiting crossbar is inserted into the inside of the positioning support plate. A limiting insert plate is fixedly connected to the surface of the limiting crossbar. A pull handle is fixedly connected to the bottom of the limiting crossbar. Limiting crossbars are fixedly connected to both the left and right ends of the positioning support plate.

[0007] Through the above technical solution, the connecting screw connected by the internal thread of the first sector segment and the second sector segment form a helical pair transmission structure. The self-locking characteristic of the thread enables rapid fastening and separation between the two segments, which greatly shortens the replacement time of the sector segment. Moreover, the axial preload of the connecting screw ensures that the two segments can maintain stable meshing under high temperature and vibration conditions, avoiding the risk of loosening caused by thermal expansion and contraction of traditional bolt connections.

[0008] As a further improvement to the above solution, the mounting frame is inserted into the rear end of the second sector segment, the surface of the limiting horizontal plate is in contact with the surface of the second sector segment, and the surface of the limiting horizontal plate is in contact with the surface of the first sector segment.

[0009] As a further improvement to the above scheme, the number of positioning support plates is set to four, and two of them are grouped together. The four positioning support plates are symmetrically distributed on the left and right sides with the first sector segment as the center.

[0010] Through the above technical solution, the positioning support plate adopts a grouped symmetrical layout, with each group corresponding to a specific sector segment position. The insertion depth of the limiting crossbar can be adjusted to adapt to sector segments of different thicknesses.

[0011] As a further improvement to the above solution, the surface of the limiting plate is in contact with the surface of the first sector segment, the surface of the limiting plate is in contact with the surface of the second sector segment, and the pull handle is located on the front of the first sector segment.

[0012] With the above technical solution, the pull handle is integrated into the bottom of the limit bar, allowing operators to unlock and lock the limit mechanism without tools, significantly reducing the technical threshold for equipment maintenance. This user-friendly design enables on-site replacement work to be completed within a short downtime window.

[0013] As a further improvement to the above solution, the pull handle is located at the rear end of the second sector segment, the surface of the positioning support plate is in contact with the surface of the first sector segment, and the surface of the positioning support plate is in contact with the surface of the second sector segment.

[0014] As a further improvement to the above scheme, the number of positioning support plates is set to several, and each pair is a group, with the several positioning support plates symmetrically distributed on the left and right sides with the first sector segment as the center.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model sets up a four-point symmetrical positioning system by inserting a mounting frame into the rear end of the second sector segment and cooperating with a positioning support plate. The system achieves double positioning through the limiting plate on the surface of the limiting crossbar. The limiting plate simultaneously contacts the surfaces of the first and second sector segments, forming a closed-loop positioning constraint, effectively eliminating assembly gaps, and ensuring the alignment accuracy of the roller gap after the replacement of the old and new sector segments and the stability of the overall equipment after installation.

[0017] This invention sets a limiting cross plate that simultaneously contacts the surfaces of the first and second sector segments to form a surface contact support structure. This structure can evenly distribute the thermal stress and mechanical impact generated during the casting process to the entire connection interface. Compared with the traditional unilateral force mode, this effectively slows down the deformation rate of the sector segments, extends the service life of the equipment, and reduces the risk of accidental breakage caused by local stress concentration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0021] Figure 4 This is a schematic diagram of the right-side structure of this utility model.

[0022] Explanation of key symbols:

[0023] 1. First sector segment; 2. Connecting screw; 3. Second sector segment; 4. Mounting frame; 5. Positioning support plate; 6. Limiting crossbar; 7. Limiting insert plate; 8. Pull handle; 9. Limiting crossbar. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example:

[0026] Please combine Figure 1-4 The quick-change mechanism for the sector section of a continuous casting machine according to this embodiment includes a first sector section 1, a connecting screw 2 internally connected to the first sector section 1, and a second sector section 3 externally connected to the connecting screw 2.

[0027] A mounting frame 4 is inserted into the front of the first sector segment 1. A positioning support plate 5 is fixedly connected to the surface of the mounting frame 4. A limiting crossbar 6 is inserted into the inside of the positioning support plate 5. A limiting insert plate 7 is fixedly connected to the surface of the limiting crossbar 6. A pull handle 8 is fixedly connected to the bottom of the limiting crossbar 6. Limiting crossbars 9 are fixedly connected to both the left and right ends of the positioning support plate 5. By setting the mounting frame 4 to be inserted into the rear end of the second sector segment 3, a four-point symmetrical positioning system is formed with the positioning support plate 5. Double limiting is achieved through the limiting insert plate 7 on the surface of the limiting crossbar 6. The limiting insert plate 7 simultaneously contacts the surfaces of the first sector segment 1 and the second sector segment 3, forming a closed-loop positioning constraint, effectively eliminating assembly gaps, ensuring the roll gap alignment accuracy after the replacement of the old and new sector segments and the stability of the overall equipment after installation.

[0028] The connecting screw 2, which is internally threaded through the first sector segment 1, forms a helical transmission structure with the second sector segment 3. The self-locking characteristic of the thread enables rapid fastening and separation between the two segments, which greatly shortens the replacement time of the sector segments. Furthermore, the axial preload of the connecting screw 2 ensures that the two segments can maintain stable meshing under high temperature and vibration conditions, avoiding the risk of loosening caused by thermal expansion and contraction in traditional bolt connections.

[0029] The mounting frame 4 is inserted into the rear end of the second sector segment 3, the surface of the limiting plate 9 is in contact with the surface of the second sector segment 3, and the surface of the limiting plate 9 is in contact with the surface of the first sector segment 1.

[0030] The number of positioning support plates 5 is set to four, and each pair is a group of two. The four positioning support plates 5 are symmetrically distributed on the left and right sides with the first sector segment 1 as the center.

[0031] The positioning support plate 5 adopts a grouped symmetrical layout, with each group corresponding to a specific sector segment position. The insertion depth of the limiting crossbar 6 can be adjusted to accommodate sector segments of different thicknesses.

[0032] The surface of the limiting plate 7 is in contact with the surface of the first sector segment 1, the surface of the limiting plate 7 is in contact with the surface of the second sector segment 3, and the pull handle 8 is located on the front of the first sector segment 1.

[0033] The pull handle 8 is integrated into the bottom of the limit bar 6, allowing operators to unlock and lock the limit mechanism without tools, significantly reducing the technical barrier to equipment maintenance. This user-friendly design enables on-site replacement work to be completed within a short downtime window.

[0034] The pull handle 8 is located at the rear end of the second sector segment 3. The surface of the positioning support plate 5 is in contact with the surface of the first sector segment 1 and the surface of the second sector segment 3. By setting the limiting cross plate 9, the surfaces of the first sector segment 1 and the second sector segment 3 are simultaneously in contact, forming a surface contact support structure. This structure can evenly distribute the thermal stress and mechanical impact generated during the casting process to the entire connection interface. Compared with the traditional single-sided force mode, this effectively slows down the deformation rate of the sector segment, extends the service life of the equipment, and reduces the risk of accidental breakage caused by local stress concentration.

[0035] The number of positioning support plates 5 is set to several, and each pair is a group. The several positioning support plates 5 are symmetrically distributed on the left and right sides with the first sector segment 1 as the center.

[0036] The implementation principle of a quick replacement mechanism for a continuous casting machine sector segment in this embodiment is as follows: A four-point symmetrical positioning system is formed by inserting a mounting frame 4 into the rear end of the second sector segment 3, and cooperating with a positioning support plate 5. Double limiting is achieved through the limiting insert plate 7 on the surface of the limiting crossbar 6. The limiting insert plate 7 simultaneously contacts the surfaces of the first sector segment 1 and the second sector segment 3, forming a closed-loop positioning constraint, effectively eliminating assembly gaps, ensuring the alignment accuracy of the roll gap after replacing the old and new sector segments, and the stability of the overall equipment after installation. By setting a limiting crossbar 9 to simultaneously contact the surfaces of the first sector segment 1 and the second sector segment 3, a surface contact support structure is formed, which can evenly distribute the thermal stress and mechanical impact generated during casting to the entire connection interface. Compared with the traditional single-sided force mode, this effectively slows down the deformation rate of the sector segment, extends the service life of the equipment, and reduces the risk of accidental fracture caused by localized stress concentration.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A quick-change mechanism for sector sections of a continuous casting machine, characterized in that, It includes a first sector segment (1), the first sector segment (1) is internally threaded with a connecting screw (2), and the connecting screw (2) is surfacely threaded with a second sector segment (3); A mounting frame (4) is inserted into the front of the first sector segment (1). A positioning support plate (5) is fixedly connected to the surface of the mounting frame (4). A limiting crossbar (6) is inserted into the inside of the positioning support plate (5). A limiting insert plate (7) is fixedly connected to the surface of the limiting crossbar (6). A pull handle (8) is fixedly connected to the bottom of the limiting crossbar (6). Limiting crossbars (9) are fixedly connected to both the left and right ends of the positioning support plate (5).

2. The quick-change mechanism for the sector section of a continuous casting machine as described in claim 1, characterized in that: The mounting frame (4) is inserted into the rear end of the second sector segment (3), the surface of the limiting plate (9) is in contact with the surface of the second sector segment (3), and the surface of the limiting plate (9) is in contact with the surface of the first sector segment (1).

3. The quick-change mechanism for the sector section of a continuous casting machine as described in claim 1, characterized in that: The number of the positioning support plates (5) is set to four, and each pair is a group of two. The four positioning support plates (5) are symmetrically distributed on the left and right with the first sector segment (1) as the center.

4. The quick-change mechanism for the sector section of a continuous casting machine as described in claim 1, characterized in that: The surface of the limiting plate (7) is in contact with the surface of the first sector segment (1), the surface of the limiting plate (7) is in contact with the surface of the second sector segment (3), and the pull handle (8) is located on the front of the first sector segment (1).

5. The quick-change mechanism for the sector section of a continuous casting machine as described in claim 1, characterized in that: The pull handle (8) is located at the rear end of the second sector segment (3), the surface of the positioning support plate (5) is in contact with the surface of the first sector segment (1), and the surface of the positioning support plate (5) is in contact with the surface of the second sector segment (3).

6. The quick-change mechanism for the sector section of a continuous casting machine as described in claim 1, characterized in that: The number of positioning support plates (5) is set to several, and each pair is a group. The several positioning support plates (5) are symmetrically distributed on the left and right with the first sector segment (1) as the center.

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