Continuous casting machine with crystallizer foot roller capable of being replaced on line

Abstract

The invention relates to a continuous casting machine with crystallizer foot rollers capable of being replaced online. The continuous casting machine comprises a placing table, and a continuous casting machine body is installed at the top of the placing table; an intermediate tank is mounted at the top of the continuous casting machine body; a pair of supporting frames is installed on the side wall of the continuous casting machine body. A crystallizer body is installed in the middle of the supporting frame. The crystallizer body is positioned below the intermediate tank; the bottom of the crystallizer body is fixedly connected with a connecting frame; the inner wall of the connecting frame is connected with a plurality of foot roller bodies through bolts; a dummy bar is arranged below the foot roller body; a dummy bar head is fixedly connected to the top of the dummy bar; a supporting skirt edge is arranged at the top of the dummy bar head; the supporting skirt edge is installed on the dummy bar head, the supporting skirt edge can be driven by the force of a dummy bar to move, other operations are reduced when the supporting skirt edge is replaced, meanwhile, the foot roller body can be limited through the anti-skid groove after moving, shaking is reduced after the foot roller body is detached, and therefore the supporting skirt edge stays in the anti-skid groove to increase stability.

Description

Technical Field

[0001] This invention relates to the field of maintenance technology for metallurgical continuous casting equipment, and in particular to a continuous casting machine with an online replaceable crystallizer foot roll. Background Technology

[0002] Continuous casting machines are key metallurgical equipment that continuously cast molten steel into steel billets. They can significantly shorten the steel production process. The molten steel is initially solidified in a crystallizer, and then cooled and straightened to form billets of specific shapes (such as slabs, square billets, etc.). The application of continuous casting machines has significantly improved steel production efficiency and reduced energy consumption. It is one of the core equipment of the modern steel industry.

[0003] In the continuous casting process, the crystallizer foot roll, as a key guiding component that directly contacts the high-temperature steel billet (surface temperature 800℃), is subjected to harsh conditions such as billet wear, alternating thermal stress, and iron oxide scale adhesion for a long time, resulting in frequent replacement of the foot roll.

[0004] When replacing the crystallizer foot roller, the crystallizer as a whole is usually lifted off the vibrating table, then the foot roller is disassembled and then installed in the designated position. However, during the disassembly and reassembly of the crystallizer, the crystallizer iron plate will be misaligned with the vibrating table, which requires constant correction. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the fact that in the prior art, when the crystallizer foot roller is replaced, the entire crystallizer is usually lifted off the vibrating table, then the foot roller is disassembled and then installed in the designated position. However, during the disassembly and reassembly of the crystallizer, the crystallizer iron plate will be misaligned with the vibrating table, which requires constant correction.

[0006] To solve the above-mentioned technical problems, the present invention provides a continuous casting machine with online replaceable crystallizer foot rolls, including a placement platform, on the top of which the continuous casting machine body is mounted; an intermediate tundish is mounted on the top of the continuous casting machine body; a pair of support frames are mounted on the side wall of the continuous casting machine body; a crystallizer body is mounted in the middle of the support frames; the crystallizer body is located below the intermediate tundish; a connecting frame is fixedly connected to the bottom of the crystallizer body; multiple foot roll bodies are bolted to the inner wall of the connecting frame; a siphon rod is provided below the foot roll body; and a siphon rod is fixedly connected to the top of the siphon rod. A derrick head; a supporting skirt is provided on the top of the derrick head; the supporting skirt and the derrick head are connected by an installation assembly; multiple anti-slip grooves are provided on the top of the supporting skirt; the anti-slip grooves and the foot roller body are correspondingly provided; a sleeve is fixedly connected to the middle of the supporting skirt; by installing the supporting skirt onto the derrick head, the force of the derrick rod can be used to drive the supporting skirt to move, reducing other operations when replacing it. At the same time, after moving, the anti-slip grooves can also restrict the foot roller body, reducing shaking after disassembly, thus stopping it inside the anti-slip grooves to increase stability.

[0007] In one embodiment of the present invention, the mounting assembly includes a pair of mounting plates; the mounting plates and the supporting skirt are fixedly connected; the mounting plates and the spindle head are connected by a plurality of mounting bolts; by using mounting plates and mounting bolts, the installation of the supporting skirt can be faster, allowing it to be placed directly and the mounting bolts to be rotated through the mounting plates and into the spindle head for fixation. At the same time, using a plurality of mounting bolts when fixing the mounting plates can increase the stability of the mounting bolts during fixation and reduce shaking.

[0008] In one embodiment of the present invention, a snap-on cover is slidably fitted inside the mounting bolt; the snap-on cover and the mounting bolt are correspondingly provided; by adding the snap-on cover, the cover can be placed inside the mounting bolt after use, thereby reducing dust accumulation inside the mounting bolt and thus protecting the mounting bolt, reducing frictional damage caused by dust inside the mounting bolt during operation.

[0009] In one embodiment of the present invention, a lifting rod is fixedly connected to the side wall of the cover; the lifting rod and the cover are fixedly connected; by adding the lifting rod, the contact area of ​​the cover can be increased when the cover is removed, thereby making the removal faster.

[0010] In one embodiment of the present invention, the top of the support skirt is provided with a plurality of square grooves; a correction plate is rotatably connected inside the square grooves; the correction plate and the square grooves are connected by a torsion spring; by adding a correction plate, the foot roller body can be rotated by pushing it when it comes into contact with the foot roller body, and then the force is gradually unloaded by rotation, thereby reducing the impact received, and at the same time guiding it to enter the anti-slip groove faster.

[0011] In one embodiment of the present invention, a plurality of springs are fixedly connected inside the square groove; the ends of the springs and the correction plate are fixedly connected; by adding springs, the rebound force of the correction plate after rotation can be increased after being subjected to force, thereby increasing the thrust when guiding the foot roller body.

[0012] In one embodiment of the present invention, a washer is slidably fitted in the middle of the mounting bolt; the washer is located between the mounting bolt and the mounting plate; by adding the washer, friction can be increased through the deformation of the washer during the installation of the mounting bolt, thereby increasing the stability after installation.

[0013] In one embodiment of the present invention, a plurality of fixing boxes are fixedly connected to the inner wall of the connecting frame; a cleaning plate is provided inside the fixing box; the cleaning plate and the fixing box are connected by a connecting component; the end of the cleaning plate is set with an inclined surface; by adding a cleaning plate, impurities generated on the surface of the foot roller body after long-term operation can be scraped and cleaned, thereby reducing impurities on the surface of the foot roller body.

[0014] In one embodiment of the present invention, the connecting component includes multiple locking blocks; the locking blocks and the cleaning plate are fixedly connected; the fixing box has a slot inside; the locking blocks and the slot are slidably engaged; the fixing box has a slot at its end; by using the locking blocks and the slot, the cleaning plate can be stabilized by first engaging and supporting the cleaning plate, and then fixed by the pin, thereby increasing the convenience of disassembly and installation.

[0015] In one embodiment of the present invention, a friction ball is fixedly connected inside the anti-slip groove; multiple friction balls are arranged inside the anti-slip groove; by increasing the number of friction balls, the friction force can be increased by the tight contact of the friction balls when the foot roller body enters the anti-slip groove, thereby accelerating the placement and stabilization of it.

[0016] The technical solution of the present invention has the following advantages compared with the prior art:

[0017] The present invention relates to a continuous casting machine with an online replaceable crystallizer foot roll. By installing the support skirt onto the dummy bar, the force of the dummy bar rod can be used to move the support skirt, reducing other operations during replacement. At the same time, after movement, the anti-slip groove can restrict the foot roll body, reducing shaking after disassembly and increasing stability by keeping it inside the anti-slip groove.

[0018] The present invention discloses a continuous casting machine with an online replaceable crystallizer foot roll. By using a mounting plate and mounting bolts, the installation of the support skirt can be faster. After placing it directly, the mounting bolts are rotated through the mounting plate and into the dummy head for fixation. At the same time, using multiple mounting bolts when fixing the mounting plate can increase the stability of the mounting bolts during fixation and reduce shaking. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the spindle rod in this invention;

[0022] Figure 3 This is a schematic diagram of the support frame in this invention;

[0023] Figure 4 This is a schematic diagram of the anti-slip groove structure in this invention;

[0024] Figure 5 This is a schematic diagram of the mounting plate in this invention;

[0025] Figure 6 This is a schematic diagram of the support frame in this invention;

[0026] Figure 7 This is a schematic diagram of the connecting frame in the present invention;

[0027] Figure 8 This is a schematic diagram of the installation components in this invention.

[0028] Explanation of reference numerals in the accompanying drawings: 1. Placement platform; 11. Continuous casting machine body; 12. Intermediate tank; 13. Support frame; 14. Crystallizer body; 15. Connecting frame; 16. Foot roller body; 17. Ingot guide rod; 18. Ingot guide head; 19. Mounting assembly; 101. Support skirt; 102. Anti-slip groove; 103. Sleeve; 2. Mounting plate; 21. Mounting bolt; 3. Cover; 4. Lifting rod; 5. Square groove; 51. Correction plate; 6. Spring; 7. Washer; 8. Fixing box; 81. Cleaning plate; 82. Connecting assembly; 9. Locking block; 91. Locking groove; 92. Slot; 10. Friction ball. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0030] Reference Figures 1 to 8As shown, a continuous casting machine with online replaceable crystallizer foot rolls according to the present invention includes a placement platform 1, on the top of which a continuous casting machine body 11 is mounted; an intermediate tank 12 is mounted on the top of the continuous casting machine body 11; a pair of support frames 13 are mounted on the side wall of the continuous casting machine body 11; a crystallizer body 14 is mounted in the middle of the support frame 13; the crystallizer body 14 is located below the intermediate tank 12; a connecting frame 15 is fixedly connected to the bottom of the crystallizer body 14; multiple foot roll bodies 16 are bolted to the inner wall of the connecting frame 15; a dummy bar 17 is arranged below the foot roll body 16; the dummy bar... The top of the 17 is fixedly connected to the spindle head 18; the top of the spindle head 18 is provided with a supporting skirt 101; the supporting skirt 101 and the spindle head 18 are connected by an installation assembly 19; the top of the supporting skirt 101 is provided with multiple anti-slip grooves 102; the anti-slip grooves 102 and the foot roller body 16 are correspondingly provided; a sleeve 103 is fixedly connected to the middle of the supporting skirt 101; during operation, when the foot roller body 16 needs to be replaced after operation, first install the supporting skirt 101 onto the spindle head 18 using the installation assembly 19, and then start the spindle rod 17 to drive the spindle head 18 to lift the supporting skirt. 101 moves closer to the foot roller body 16. After approaching, the foot roller body 16 gradually enters the support skirt 101. At the same time, the sleeve 103 is located in the middle of the connecting frame 15. Then, the bolts connecting the foot roller body 16 are removed to disconnect it from the connecting frame 15. After disconnection, the foot roller body 16 falls into the support skirt 101, thus restraining the foot roller body 16 using the support skirt 101. Then, the derrick head 18 is gradually lowered to remove the removed foot roller body 16. The replacement foot roller body 16 is then placed inside the anti-slip groove 102, allowing the derrick head 101 to restart. 8. Push the foot roller body 16 upwards. After pushing, it will gradually approach the connecting frame 15, thereby sending the foot roller body 16 into the connecting frame 15. Then, install the bolts to install the foot roller body 16 into the connecting frame 15 for use, thereby replacing it. By installing the support skirt 101 onto the spindle head 18, the force of the spindle rod 17 can be used to drive the support skirt 101 to move, reducing other operations during replacement. At the same time, after moving, the anti-slip groove 102 can also restrict the foot roller body 16, reducing shaking after disassembly, thereby stopping it in the anti-slip groove 102 to increase stability.

[0031] Reference Figures 1 to 5As shown, the mounting assembly 19 includes a pair of mounting plates 2; the mounting plates 2 and the support skirt 101 are fixedly connected; the mounting plates 2 and the spindle head 18 are connected by multiple mounting bolts 21; during operation, when the support skirt 101 needs to be disassembled, the multiple mounting bolts 21 are first rotated to gradually move away from the inside of the spindle head 18, thereby separating the mounting plates 2 and the spindle head 18. After the mounting bolts 21 are removed, the mounting plates 2 can be lifted and disassembled, and after disassembly, the support skirt 101 can be removed from the spindle head 18; by using the mounting plates 2 and mounting bolts 21, the installation of the support skirt 101 can be faster. After placing it directly, the mounting bolts 21 are rotated through the mounting plates 2 and enter the inside of the spindle head 18 for fixation. At the same time, using multiple mounting bolts 21 when fixing the mounting plates 2 can increase the stability of the mounting bolts 21 during fixation and reduce shaking.

[0032] Reference Figure 5 As shown, a cover 3 is slidably fitted inside the mounting bolt 21; the cover 3 and the mounting bolt 21 are correspondingly arranged; during operation, when the mounting bolt 21 is not in use, the cover 3 can be placed inside the mounting bolt 21 to close the contact hole, thereby reducing dust from entering the mounting bolt 21 and intercepting external impurities for the mounting bolt 21; by adding the cover 3, after the mounting bolt 21 is used, the cover 3 can be placed inside the mounting bolt 21, thereby reducing dust accumulation inside the mounting bolt 21, thus protecting the mounting bolt 21 and reducing frictional damage caused by dust inside the mounting bolt 21 during operation.

[0033] Reference Figure 5 As shown, a lifting rod 4 is fixedly connected to the side wall of the cover 3; the lifting rod 4 and the cover 3 are fixedly connected; during operation, when the cover 3 is taken out, it can contact the lifting rod 4. At this time, the lifting rod 4 will increase the contact area when taking it out through the circular contact position at its end, thus making it more convenient to take out the cover 3; by adding the lifting rod 4, the contact area of ​​the cover 3 can be increased when taking it out, thus making the taking out faster.

[0034] Reference Figure 4As shown, the top of the support skirt 101 has multiple square grooves 5; a correction plate 51 is rotatably connected inside the square grooves 5; the correction plate 51 and the square grooves 5 are connected by a torsion spring; during operation, when the support skirt 101 is brought closer to the foot roller body 16, the correction plate 51 will be located on the outside of the foot roller body 16, so that when the foot roller body 16 is disassembled and the foot roller body 16 shakes, it will block the foot roller body 16 and push it into the anti-slip groove 102. The foot roller body 16 will automatically rotate when it comes into contact with the anti-slip groove 102, thereby increasing the flexible contact between the foot roller body 16 and the correction plate 51 and reducing the impact when they come into contact; by adding the correction plate 51, the foot roller body 16 can be rotated by pushing it when it comes into contact, and then the force is gradually released by the rotation, thereby reducing the impact it receives, and at the same time, it can also guide it to enter the anti-slip groove 102 more quickly.

[0035] Reference Figure 4 As shown, multiple springs 6 are fixedly connected inside the square groove 5; the ends of the springs 6 are fixedly connected to the correction plate 51; during operation, when the foot roller body 16 and the correction plate 51 come into contact and push each other, the springs 6 will be compressed accordingly. After compression, the resistance of the correction plate 51 when rotating will gradually increase, so that the correction plate 51 will accelerate its restoring force after rotation; by adding springs 6, the rebound force of the correction plate 51 after rotation can be increased after being subjected to force, so that it will increase the thrust when guiding the foot roller body 16.

[0036] Reference Figure 4 As shown, a washer 7 is slidably fitted in the middle of the mounting bolt 21; the washer 7 is located between the mounting bolt 21 and the mounting plate 2; during operation, when installing the mounting bolt 21, the mounting bolt 21 can be placed on the mounting plate 21 first, and then the mounting bolt 21 can be installed, so that it gradually comes into contact with the washer 7 during installation, and after contact, it will gradually be squeezed, and after being squeezed, it will deform, thereby increasing the friction of the mounting bolt 21 during installation; by adding the washer 7, the friction can be increased by the deformation of the washer 7 during the installation of the mounting bolt 21, thereby increasing the stability after installation.

[0037] Reference Figures 1 to 7As shown, multiple fixing boxes 8 are fixedly connected to the inner wall of the connecting frame 15; a cleaning plate 81 is provided inside the fixing box 8; the cleaning plate 81 and the fixing box 8 are connected by a connecting component 82; the end of the cleaning plate 81 is set with an inclined surface; during operation, after the foot roller body 16 is installed, the cleaning plate 81 can be installed into the fixing box 8 through the connecting component 82. After the cleaning plate 81 is installed, its end will be located above the foot roller body 16. Subsequently, during the operation of the foot roller body 16, it will scrape off the impurities attached to the surface of the foot roller body 16 and clean it; by adding the cleaning plate 81, the impurities generated on the surface of the foot roller body 16 after long-term operation can be scraped off and cleaned, thereby reducing the impurities on the surface of the foot roller body 16.

[0038] Reference Figure 7 As shown, the connecting component 82 includes multiple locking blocks 9; the locking blocks 9 and the cleaning plate 81 are fixedly connected; the fixing box 8 has a slot 91 inside; the locking blocks 9 and the slot 91 are in sliding fit; the fixing box 8 has a slot 92 at its end; during operation, when the cleaning plate 81 needs to be disassembled, first pull out the pin inside the slot 92 and then pull out the cleaning plate 81 to remove it. Then, insert the cleaned cleaning plate 81 into the fixing box 8 until it reaches the bottom, and then insert the pin into the slot 92. By using the locking blocks 9 and the slot 91, the locking blocks 9 and the slot 91 can be used to support and increase stability when the cleaning plate 81 is removed, and then the pin can be used to fix it, thereby increasing the convenience of disassembly and installation.

[0039] Reference Figure 4 As shown, friction balls 10 are fixedly connected inside the anti-slip groove 102; multiple friction balls 10 are arranged inside the anti-slip groove 102; during operation, when the foot roller body 16 enters the anti-slip groove 102, it will come into contact with multiple friction balls 10, and then the friction balls 10 will stick tightly to the foot roller body 16 after contact. When the foot roller body 16 shakes, the friction balls 10 will increase the friction force by sticking tightly, thereby reducing the displacement amplitude; by increasing the number of friction balls 10, the friction force can be increased by the sticking of the friction balls 10 when the foot roller body 16 enters the anti-slip groove 102, thereby accelerating the placement and stabilization of it.

[0040] Working principle: When the foot roller body 16 needs to be replaced after operation, first install the support skirt 101 onto the derrick head 18 using the mounting assembly 19. Then, start the derrick rod 17 to drive the derrick head 18 to lift the support skirt 101 towards the foot roller body 16. After approaching, the foot roller body 16 will gradually enter the support skirt 101. At the same time, the sleeve 103 will be located in the middle of the connecting frame 15. Then, remove the bolts connecting the foot roller body 16 to disconnect it from the connecting frame 15. After disconnection, the foot roller body 16 will fall into the support skirt 101, thus confining the foot roller body 16 with the support skirt 101. Then, the derrick head 18 will gradually descend to remove the foot roller body 16. The roller body 16 is removed, and the replacement foot roller body 16 is placed inside the anti-slip groove 102. The derrick head 18 is then activated to push the foot roller body 16 upwards. As it is pushed, it gradually approaches the connecting frame 15, thus sending the foot roller body 16 into the connecting frame 15. The bolts are then installed to install the foot roller body 16 into the connecting frame 15 for use, thus completing the replacement. When it is necessary to disassemble the support skirt 101, the multiple mounting bolts 21 are first rotated to gradually move them away from the derrick head 18, thereby separating the mounting plate 2 from the derrick head 18. After the mounting bolts 21 are removed, the mounting plate 2 can be lifted and disassembled. After disassembly, the support skirt 101 can be removed from the derrick head. 18. Remove from the mounting bolt 21; when not in use, the cover 3 can be placed inside the mounting bolt 21 to close the contact hole, thereby reducing dust from entering the mounting bolt 21 and intercepting external impurities for the mounting bolt 21; when removing the cover 3, it can contact the lifting rod 4. At this time, the lifting rod 4 will contact the circular end of the rod, increasing the contact area and making it easier to remove the cover 3; when the support skirt 101 is moved closer to the foot roller body 16, the correction plate 51 will be located on the outside of the foot roller body 16, so that when the foot roller body 16 shakes during disassembly, it will block the foot roller body 16 and push it towards the anti-slip groove 102. The foot roller body 16 automatically rotates during contact with the anti-slip groove 102, thereby increasing the flexible contact between the foot roller body 16 and the correction plate 51 and reducing the impact during contact. When the foot roller body 16 and the correction plate 51 come into contact and push each other, the spring 6 will be compressed accordingly. After compression, it will gradually increase the resistance when the correction plate 51 rotates, thus accelerating the recovery force of the correction plate 51 after rotation. When installing the mounting bolt 21, the mounting bolt 21 can be placed on the mounting bolt 7 first and then installed. During installation, it will gradually come into contact with the washer 7. After contact, it will gradually squeeze it and deform after squeezing, thereby increasing the friction of the mounting bolt 21 during installation.After the foot roller body 16 is installed, the cleaning plate 81 can be installed into the fixed box 8 via the connecting assembly 82. After installation, the end of the cleaning plate 81 will be above the foot roller body 16. During operation, it will scrape away impurities adhering to the surface of the foot roller body 16, thus cleaning it. To remove the cleaning plate 81, first pull out the pin inside the slot 92, then remove the cleaning plate 81. After cleaning, insert the cleaned cleaning plate 81 deep into the fixed box 8, and then insert the pin back into the slot 92. When the foot roller body 16 enters the anti-slip groove 102, it will contact multiple friction balls 10. Upon contact, the friction balls 10 will adhere tightly to the foot roller body 16. When the foot roller body 16 shakes, the friction balls 10 will increase friction by adhering tightly, thus reducing the displacement amplitude.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A continuous casting machine with online replaceable crystallizer foot rolls, comprising a placement table (1), characterized in that: The continuous casting machine body (11) is mounted on the top of the placement platform (1); an intermediate tank (12) is mounted on the top of the continuous casting machine body (11); a pair of support frames (13) are mounted on the side wall of the continuous casting machine body (11); a crystallizer body (14) is mounted in the middle of the support frame (13); the crystallizer body (14) is located below the intermediate tank (12); a connecting frame (15) is fixedly connected to the bottom of the crystallizer body (14); multiple foot roller bodies (16) are bolted to the inner wall of the connecting frame (15); the foot roller body (16) is mounted on the middle of the support frame (13); the middle of the support frame (13) is mounted on the middle of the support frame (14); the middle of the support frame (14) is mounted on the middle of the support frame (14); the middle of the support frame (14) is mounted on the middle of the support frame (14); a pair of support frames (13) are mounted on the side wall ... middle of the support frame (14); a pair of support frames (14) are mounted on the middle of the support frame (14); a pair of support frames (15) are mounted on the side wall of the support frame (14); a pair of support frames (15) are mounted on the middle of the support frame (14); a pair of support frames (15) are mounted on the middle of the support frame (14); a pair of support frames (15) are mounted on the middle of the support frame (14); a pair of support frames (15) are mounted on the middle of the support frame (14); a pair of support frames (15) are mounted on the middle of the support frame A guide rod (17) is provided below the roller body (16); a guide head (18) is fixedly connected to the top of the guide rod (17); a support skirt (101) is provided on the top of the guide head (18); the support skirt (101) and the guide head (18) are connected by an installation component (19); a plurality of anti-slip grooves (102) are provided on the top of the support skirt (101); the anti-slip grooves (102) and the foot roller body (16) are correspondingly provided; a sleeve (103) is fixedly connected to the middle of the support skirt (101).

2. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 1, characterized in that: The mounting assembly (19) includes a pair of mounting plates (2); the mounting plates (2) and the supporting skirt (101) are fixedly connected; the mounting plates (2) and the spindle head (18) are connected by a plurality of mounting bolts (21).

3. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 2, characterized in that: The mounting bolt (21) has a sliding fit with a cover (3); the cover (3) and the mounting bolt (21) are provided in a corresponding manner.

4. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 3, characterized in that: The cover (3) is fixedly connected to the side wall of the lifting rod (4); the lifting rod (4) and the cover (3) are fixedly connected.

5. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 4, characterized in that: The top of the supporting skirt (101) is provided with multiple square grooves (5); a correction plate (51) is rotatably connected inside the square groove (5); the correction plate (51) and the square groove (5) are connected by a torsion spring.

6. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 5, characterized in that: Multiple springs (6) are fixedly connected inside the square groove (5); the ends of the springs (6) and the correction plate (51) are fixedly connected.

7. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 6, characterized in that: A washer (7) is slidably fitted in the middle of the mounting bolt (21); the washer (7) is located between the mounting bolt (21) and the mounting plate (2).

8. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 7, characterized in that: Multiple fixing boxes (8) are fixed to the inner wall of the connecting frame (15); a cleaning plate (81) is provided inside the fixing box (8); the cleaning plate (81) and the fixing box (8) are connected by a connecting component (82); the end of the cleaning plate (81) is set with a slope.

9. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 8, characterized in that: The connecting component (82) includes multiple locking blocks (9); the locking blocks (9) and the cleaning plate (81) are fixedly connected; the fixing box (8) has a slot (91) inside; the locking blocks (9) and the slot (91) are slidably engaged; the fixing box (8) has a slot (92) at its end.

10. A continuous casting machine with online replaceable crystallizer foot rolls according to claim 9, characterized in that: Friction balls (10) are fixedly connected inside the anti-slip groove (102); there are multiple friction balls (10) inside the anti-slip groove (102).

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