An assembly structure of rollers for continuous casting machine

Abstract

The invention discloses an assembly structure of a roller for a continuous casting machine, comprising two shaft seats, two bearings and a roller, wherein the bearing comprises an inner ring and an outer ring, the outer ring cooperates with the shaft seat mounting hole, a lubrication structure is provided on the top of the shaft seat, a first cooling structure is provided on the roller, and a second cooling structure is provided on the shaft seat. The invention pours lubricating oil into the oil tank, and the lubricating oil flows from the oil outlet pipe to the connection between the inner ring and the extension ring, and the lubricating oil is infiltrated into the bearing through the bearing rotation, thereby improving the lubrication effect. The invention has a good lubrication effect, can fully lubricate the bearing, make the roller not easy to get stuck, not easy to damage the surface of the casting, and can increase the installation firmness of the roller. At the same time, by providing the first cooling structure and the second cooling structure, the roller and the shaft seat are cooled and cooled respectively, the cooling effect is greatly improved, the roller is not easy to deform, the water after cooling is recycled, and water resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting equipment, and in particular to an assembly structure of a roller for a continuous casting machine. Background Art

[0002] Continuous casting technology is a new process for continuously casting liquid metal into ingots of a certain cross-sectional shape through a set of special cooling and supporting devices. Its emergence has fundamentally changed the ingot-primary rolling process that has dominated for a century. The continuous casting machine equipment mainly includes large ladle turntable, middle ladle and middle ladle car, crystallizer and its vibration device, fan-shaped segment and straightening machine, cutting machine, inkjet printer, rear zone roller equipment and water treatment equipment. The fan-shaped segment is the core equipment on the arc section of the continuous casting machine. Its function is to provide support and guidance for the continuous casting ingot that has just been initially solidified out of the crystallizer. The correctness of the fan-shaped segment roller array design and the smooth operation of the roller assembly are the key factors to ensure that the continuous casting machine can complete the ingot production.

[0003] The Chinese patent with the patent publication number CN204234692U discloses a continuous casting pre-cutting roller that can ensure bearing lubrication and cooling, including a bearing seat, a roller, a rotating shaft and a bearing. The rotating shaft is installed on the bearing seat through the bearing, and the roller is installed on the rotating shaft. A guide plate is arranged on the inner side of the bearing seat, a cold water nozzle is arranged above the bearing seat, and an oiling head is arranged on the bearing seat. The oiling head is connected to the bearing through a channel in the bearing seat; the utility model uses the guide plate to guide the steel billet running on the roller, so that the steel billet can run accurately, and a cold water nozzle is arranged above the bearing seat to cool the roller accessory equipment without affecting the lubricating oil supply of the oiling head to the bearing. The utility model has a simple structure and stable operation, which provides a guarantee for the normal operation of the steel billet conveying roller;

[0004] The Chinese patent with the patent publication number CN217617638U discloses a new type of roller of a continuous casting machine which is easy to assemble. The technical scheme includes: a bottom plate, a lower shaft seat and an upper shaft seat. The lower shaft seat is symmetrically welded on the upper surface of the bottom plate. A roller shaft is arranged above the bottom plate. A roller body is installed on the outer wall of the roller shaft. Bearings are arranged on the outer walls of both ends of the roller shaft. The upper surface of the lower shaft seat is connected to the upper shaft seat. The lower shaft seat and the upper shaft seat are connected by a second bolt. A fixing ring is installed on the opposite side of the lower shaft seat. A first screw is inserted through one side of the fixing ring. The utility model can connect the lower shaft seat and the upper shaft seat through the fixing ring, which increases the structural strength when the lower shaft seat and the upper shaft seat are connected. At the same time, the staff only needs to disassemble the upper shaft seat from the device to remove the damaged roller separately, which greatly reduces the labor intensity of the staff and reduces the maintenance cost.

[0005] The above-mentioned prior art solutions still have the following defects: the roller cooling effect of the above structure is poor, which can easily cause the roller to deform, and the cooling water flows away directly, which wastes water resources. In addition, the bearing lubrication effect is poor, and the bearing cannot be fully lubricated, which can easily cause the roller to get stuck and damage the surface of the ingot.

[0006] Therefore, it is necessary to invent an assembly structure for a continuous casting machine roller to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide an assembly structure for rollers of a continuous casting machine, so as to solve the problems that the roller cooling effect of the above structure is poor, the roller is easily deformed, the cooling water flows away directly, which wastes water resources, and the bearing lubrication effect is poor, the bearing cannot be fully lubricated, the roller is easily stuck, and the surface of the casting is easily damaged.

[0008] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an assembly structure of a roller for a continuous casting machine, comprising two shaft seats, two bearings and a roller, wherein the bearing comprises an inner ring and an outer ring, the outer ring cooperates with the shaft seat mounting hole, a lubrication structure is provided on the top of the shaft seat, a first cooling structure is provided on the roller, and a second cooling structure is provided on the shaft seat;

[0009] The lubrication structure comprises an oil tank, the oil tank is arranged on the top of the shaft seat, and oil outlet pipes are connected to both sides of the bottom of the oil tank, and extension rings are fixedly connected to both ends of the inner ring, and the cross-sectional shape of the extension ring is set to be trapezoidal, and the end of the extension ring with a smaller diameter is fixedly connected to the inner ring, one of the extension rings is fixedly connected to a first fixing ring at one end away from the inner ring, and the other extension ring is fixedly connected to a second fixing ring at one end away from the inner ring, and the number of the first fixing rings is set to two, and the roller is arranged between the two first fixing rings, and a mounting portion is fixedly connected to both ends of the roller, and the mounting portion matches the inner wall of the first fixing ring, and a fitting portion is fixedly connected to the end of the mounting portion away from the roller, and the fitting portion matches the inner wall of the extension ring, and a roller shaft is fixedly connected to one end of the fitting portion away from the mounting portion, and the roller shaft is arranged inside the inner ring, and the roller shaft cooperates with the inner ring;

[0010] The first cooling structure comprises a first cooling cavity, wherein the first cooling cavity is commonly provided inside the roller, inside the mounting portion, inside the fitting portion and inside the roller shaft, a plurality of blocking ring plates are fixedly connected to the inner wall of the first cooling cavity, the cross-sectional shape of the blocking ring plates is set to be trapezoidal, the number of the roller shafts is set to be two, a through hole is provided at one end of the roller shaft away from the roller, a first cooling water inlet pipe is provided inside one of the through holes, and a first cooling water outlet pipe is provided inside the other through hole, and the first cooling water inlet pipe and the first cooling water outlet pipe are respectively connected to the corresponding roller shaft through a sealed bearing;

[0011] The second cooling structure includes a second cooling cavity. A second cooling cavity is opened inside the shaft seat. A second cooling water inlet pipe is provided on one side of the bottom of the shaft seat. A second cooling water outlet pipe is provided on one side of the top of the shaft seat. The second cooling water inlet pipe and the second cooling water outlet pipe are both connected to the second cooling cavity.

[0012] Preferably, the cross-sectional shape of the oil outlet pipe is set to be L-shaped, and an oil outlet is provided at the outlet of the oil outlet pipe, and the oil outlet is arranged just above the connection between the inner ring and the extension ring.

[0013] Preferably, a plurality of oil guide grooves are provided on the extension ring, and the oil guide grooves are arranged to be inclined downward.

[0014] Preferably, receiving trays are fixedly connected to both sides of the shaft seat, and the receiving trays are arranged at the bottom of the extension ring.

[0015] Preferably, the mounting portion and the first fixing ring are both provided with a first fixing hole, the interior of the first fixing hole is connected with a first fixing bolt via a thread, and the mounting portion and the first fixing ring are fixedly connected via the first fixing bolt.

[0016] Preferably, a sealing plug is provided between the roller shaft and the second fixing ring, and a second fixing hole is provided on the second fixing ring, the sealing plug and the roller shaft, and a second fixing bolt is threadedly connected in the second fixing hole.

[0017] Preferably, a soot blowing structure is provided on the top of the shaft seat, the soot blowing structure includes an air duct, a plurality of air outlets are provided at the bottom of the air duct, the air outlets are arranged on the top of the shaft seat, a fan is provided on one side of the shaft seat, and the output end of the fan is connected to the air duct.

[0018] Preferably, a guide plate is fixedly connected to the outer surface of the first fixing ring, and the number of the guide plates is set to two.

[0019] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0020] By pouring lubricating oil into the oil tank, the lubricating oil flows from the oil outlet pipe to the connection between the inner ring and the extension ring. The bearing rotates to make the lubricating oil penetrate into the bearing to improve the lubrication effect. The extension ring is provided to facilitate the lubricating oil to flow into the bearing and reduce the waste of lubricating oil. The installation part and the first fixing ring are provided to facilitate the fixed installation of the roller. The extension ring and the fitting part are provided to make the roller installation more secure. The first cooling water inlet pipe and the second cooling water inlet pipe are respectively connected to the external cooling water, and the first cooling water outlet pipe and the second cooling water outlet pipe are respectively connected to the external collection water tank, so that the cooling water reaches the first cooling water outlet pipe and the second cooling water outlet pipe respectively. In the cavity and the second cooling cavity, cooling water cools the roller and the shaft seat respectively, improves the cooling effect, and prevents the roller from deforming. By arranging a plurality of blocking ring plates in the first cooling cavity, the cooling water residence time is increased, cooling water is saved, and the cooling effect is improved. The present invention has a good lubrication effect, can fully lubricate the bearing, make the roller not easy to get stuck, not easy to damage the surface of the casting, and can increase the installation firmness of the roller. At the same time, by arranging the first cooling structure and the second cooling structure, the roller and the shaft seat are cooled and cooled respectively, which greatly improves the cooling effect, makes the roller not easy to deform, recycles the cooled water, and saves water resources.

[0021] The lubricating oil flowing out from the oil outlet is directly dripped onto the connection between the inner ring and the extension ring. The bearing rotates to make the lubricating oil penetrate into the inside of the bearing, thereby improving the lubrication effect. The oil guide groove is provided to reduce the loss of lubricating oil and facilitate the lubricating oil to flow into the inside of the bearing. A receiving tray is provided to collect the spilled lubricating oil. The first fixing bolt facilitates the installation and disassembly of the mounting part and the first fixing ring. The sealing plug improves the connection firmness between the second fixing ring and the roller shaft. The second bolt facilitates the installation and disassembly of the second fixing ring and the roller shaft. The fan is started, and the air outlet blows out wind to blow away the dust above the bearing, which is beneficial to cooling the bearing. A guide plate is provided to guide the steel billet running on the roller table, so that the steel billet can run accurately and dissipate heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the connection structure of the air duct and the air outlet of the present invention.

[0025] Figure 3 This is a front view after removing the soot blowing structure of the present invention.

[0026] Figure 4 It is a schematic diagram of the connection structure between the axle seat and the receiving tray of the present invention.

[0027] Figure 5 It is a cross-sectional view of the axle seat of the present invention.

[0028] Figure 6 It is a cross-sectional view of the roller of the present invention.

[0029] Figure 7 For the present invention Figure 6 A magnified view of the structure of part A.

[0030] Figure 8 It is a schematic diagram of the connection structure between the first fixing ring and the guide plate of the present invention.

[0031] Fig. 9 It is a cross-sectional view of the bearing of the present invention.

[0032] Fig.10 This is a cross-sectional view of the roller shaft of the present invention.

[0033] Fig.11 It is a cross-sectional view of the sealing plug of the present invention.

[0034] Description of reference numerals:

[0035] 1. Shaft seat; 2. Bearing; 3. Roller; 4. Inner ring; 5. Outer ring; 6. Oil tank; 7. Oil outlet pipe; 8. Extension ring; 9. First fixing ring; 10. Second fixing ring; 11. Mounting part; 12. Fitting part; 13. Roller; 14. First cooling cavity; 15. Blocking ring plate; 16. Through hole; 17. First cooling water inlet pipe; 18. First cooling water outlet pipe; 19. Second cooling cavity; 20. Second cooling water inlet pipe; 21. Second cooling water outlet pipe; 22. Oil guide groove; 23. Receiving tray; 24. Sealing plug; 25. Air duct; 26. Air outlet; 27. Fan; 28. Guide plate. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] The present invention provides Figure 1-11 The assembly structure of a roller for a continuous casting machine shown in the figure comprises two shaft seats 1, two bearings 2 and a roller 3, the bearing 2 comprises an inner ring 4 and an outer ring 5, the outer ring 5 is matched with the mounting hole of the shaft seat 1, a lubrication structure is provided on the top of the shaft seat 1, a first cooling structure is provided on the roller 3, and a second cooling structure is provided on the shaft seat 1;

[0038] The lubrication structure includes an oil tank 6, which is arranged on the top of the shaft seat 1. Both sides of the bottom of the oil tank 6 are connected to oil outlet pipes 7. Both ends of the inner ring 4 are fixedly connected with extension rings 8. The cross-sectional shape of the extension ring 8 is set to be trapezoidal. The end of the extension ring 8 with a smaller diameter is fixedly connected to the inner ring 4. One of the extension rings 8 is fixedly connected to a first fixing ring 9 at one end away from the inner ring 4, and the other extension ring 8 is fixedly connected to a second fixing ring 10 at one end away from the inner ring 4. The number of first fixing rings 9 is set to two. The roller 3 is arranged between the two first fixing rings 9. Both ends of the roller 3 are fixedly connected with mounting portions 11, and the mounting portion 11 matches the inner wall of the first fixing ring 9. The mounting portion 11 is fixedly connected to a fitting portion 12 at one end away from the roller 3, and the fitting portion 12 matches the inner wall of the extension ring 8. The fitting portion 12 is fixedly connected to a roller shaft 13 at one end away from the mounting portion 11. The roller shaft 13 is arranged inside the inner ring 4 and cooperates with the inner ring 4.

[0039] The first cooling structure includes a first cooling cavity 14. The first cooling cavity 14 is commonly provided inside the roller 3, inside the mounting portion 11, inside the fitting portion 12 and inside the roller shaft 13. A plurality of blocking ring plates 15 are fixedly connected to the inner wall of the first cooling cavity 14. The cross-sectional shape of the blocking ring plates 15 is set to be trapezoidal. The number of roller shafts 13 is set to be two. A through hole 16 is provided at one end of the roller shaft 13 away from the roller 3. A first cooling water inlet pipe 17 is provided inside one of the through holes 16. A first cooling water outlet pipe 18 is provided inside the other through hole 16. The first cooling water inlet pipe 17 and the first cooling water outlet pipe 18 are respectively connected to the corresponding roller shaft 13 through a sealed bearing;

[0040] The second cooling structure includes a second cooling cavity 19. The second cooling cavity 19 is opened inside the shaft seat 1. A second cooling water inlet pipe 20 is provided on one side of the bottom of the shaft seat 1. A second cooling water outlet pipe 21 is provided on one side of the top of the shaft seat 1. The second cooling water inlet pipe 20 and the second cooling water outlet pipe 21 are both connected to the second cooling cavity 19. When the continuous casting machine is started, lubricating oil is poured into the oil tank 6, and the lubricating oil flows from the oil outlet pipe 7 to the connection between the inner ring 4 and the extension ring 8. The bearing 2 rotates to make the lubricating oil penetrate into the inside of the bearing 2 to improve the lubrication effect. The extension ring 8 is provided to facilitate the lubricating oil to flow into the inside of the bearing 2 and reduce the waste of lubricating oil. The mounting portion 11 and the first fixing ring 9 are provided to facilitate the fixed installation of the roller 3. The extension ring 8 and the fitting portion 12 are provided to make the roller 3 more firmly installed, so that the first cooling water inlet pipe 17 and the second cooling water inlet pipe 20 are respectively connected with the external cooling water, so that the first cooling water outlet pipe 18 and the second cooling water outlet pipe 21 are respectively connected with the external collecting water tank, and the cooling water reaches the first cooling cavity 14 and the second cooling cavity 19 respectively, and the cooling water cools the roller 3 and the shaft seat 1 respectively, improves the cooling effect, and prevents the roller 3 from deforming. By providing a plurality of blocking ring plates 15 in the first cooling cavity 14, the cooling water residence time is increased, cooling water is saved, and the cooling effect is improved. The lubrication effect of the present invention is better, and the bearing 2 can be fully lubricated, so that the roller 3 is not easy to get stuck, the surface of the ingot is not easy to be damaged, and the installation firmness of the roller 3 can be increased. At the same time, by providing the first cooling structure and the second cooling structure, the roller 3 and the shaft seat 1 are cooled and cooled respectively, which greatly improves the cooling effect, makes the roller 3 not easy to deform, and recycles the cooled water to save water resources.

[0041] like Figure 3-4 As shown: the cross-sectional shape of the oil outlet pipe 7 is set to be L-shaped, and an oil outlet is provided at the outlet of the oil outlet pipe 7. The oil outlet is set just above the connection between the inner ring 4 and the extension ring 8. The lubricating oil flowing out of the oil outlet directly drips onto the connection between the inner ring 4 and the extension ring 8. The bearing 2 rotates so that the lubricating oil penetrates into the inside of the bearing 2 to improve the lubrication effect. A plurality of oil guide grooves 22 are provided on the extension ring 8. The oil guide grooves 22 are set to be inclined downward. By providing the oil guide grooves 22, the loss of lubricating oil is reduced, and the lubricating oil is facilitated to flow into the inside of the bearing 2. Both sides of the shaft seat 1 are fixedly connected with receiving trays 23, which are arranged at the bottom of the extension ring 8. The receiving trays 23 are provided to collect the spilled lubricating oil.

[0042] like Figure 1-11As shown: a first fixing hole is provided on the mounting portion 11 and the first fixing ring 9, a first fixing bolt is threadedly connected inside the first fixing hole, the mounting portion 11 and the first fixing ring 9 are fixedly connected by the first fixing bolt, and the first fixing bolt facilitates the mounting portion 11 and the first fixing ring 9 to be installed and disassembled; a sealing plug 24 is provided between the roller shaft 13 and the second fixing ring 10, a second fixing hole is provided on the second fixing ring 10, the sealing plug 24 and the roller shaft 13, a second fixing bolt is threadedly connected inside the second fixing hole, the sealing plug 24 improves the connection firmness between the second fixing ring 10 and the roller shaft 13, and the second bolt facilitates the installation and disassembly of the second fixing ring 10 and the roller shaft 13.

[0043] like Figure 1-2 As shown: a soot blowing structure is provided on the top of the shaft seat 1, and the soot blowing structure includes an air duct 25. A plurality of air outlets 26 are provided at the bottom of the air duct 25. The air outlet 26 is arranged on the top of the shaft seat 1. A fan 27 is provided on one side of the shaft seat 1. The output end of the fan 27 is connected to the air duct 25. When the fan 27 is started, the air blown out from the air outlet blows away the dust above the bearing 2, which is beneficial to cooling the bearing 2.

[0044] like Figure 8-9 As shown: a guide plate 28 is fixedly connected to the outer surface of the first fixed ring 9, and the number of the guide plates 28 is set to two. The guide plates 28 are provided to guide the steel billet running on the roller table so that the steel billet can run accurately and dissipate heat.

[0045] Working principle of the present invention:

[0046] Refer to the instruction manual Figure 1-11 When the continuous casting machine is started, lubricating oil is poured into the oil tank 6, and the lubricating oil flows from the oil outlet pipe 7 to the connection between the inner ring 4 and the extension ring 8. The bearing 2 rotates to make the lubricating oil penetrate into the bearing 2 to improve the lubrication effect. The extension ring 8 is provided to facilitate the lubricating oil to flow into the bearing 2 and reduce the waste of lubricating oil. The installation portion 11 and the first fixing ring 9 are provided to facilitate the fixed installation of the roller 3. The extension ring 8 and the fitting portion 12 are provided to make the installation of the roller 3 more secure. The first cooling water inlet pipe 17 and the second cooling water inlet pipe 20 are respectively connected to the external cooling water, and the first cooling water outlet pipe 18 and the second cooling water outlet pipe 21 are respectively connected to the external collecting water tank. Then, the cooling water reaches the first cooling cavity 14 and the second cooling cavity 19 respectively. The cooling water cools the roller 3 and the shaft seat 1 respectively, improves the cooling effect, and prevents the roller 3 from deforming. By providing a plurality of blocking ring plates 15 in the first cooling cavity 14, the cooling water residence time is increased, cooling water is saved, and the cooling effect is improved.

[0047] Refer to the instruction manual Figure 1-11The lubricating oil flowing out from the oil outlet directly drips onto the connection between the inner ring 4 and the extension ring 8. The bearing 2 rotates to make the lubricating oil penetrate into the inside of the bearing 2, thereby improving the lubrication effect. The oil guide groove 22 is provided to reduce the loss of lubricating oil, and facilitates the lubricating oil to flow into the inside of the bearing 2. A receiving tray 23 is provided to facilitate the collection of spilled lubricating oil. The first fixing bolt facilitates the installation and disassembly of the mounting portion 11 and the first fixing ring 9. The sealing plug 24 improves the connection firmness between the second fixing ring 10 and the roller shaft 13. The second bolt facilitates the installation and disassembly of the second fixing ring 10 and the roller shaft 13. The fan 27 is started, and the wind blown out of the air outlet blows away the dust above the bearing 2, which is beneficial to cooling the bearing 2. A guide plate 28 is provided to guide the steel billet running on the roller table, so that the steel billet can run accurately and dissipate heat.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An assembly structure of a roller for a continuous casting machine, comprising two shaft seats (1), two bearings (2) and a roller (3), characterized in that: The bearing (2) comprises an inner ring (4) and an outer ring (5), the outer ring (5) cooperates with a mounting hole of the shaft seat (1), a lubrication structure is provided on the top of the shaft seat (1), a first cooling structure is provided on the roller (3), and a second cooling structure is provided on the shaft seat (1); The lubrication structure comprises an oil tank (6), the oil tank (6) being arranged on the top of the shaft seat (1), the bottom of the oil tank (6) being connected to oil outlet pipes (7) on both sides, the inner ring (4) being fixedly connected to extension rings (8) at both ends, the extension ring (8) having a trapezoidal cross-sectional shape, the end of the extension ring (8) with a smaller diameter being fixedly connected to the inner ring (4), one end of the extension ring (8) being fixedly connected to a first fixing ring (9) at a point away from the inner ring (4), the other end of the extension ring (8) being fixedly connected to a second fixing ring (10) at a point away from the inner ring (4), the first fixing ring (9) ) is set to two, the roller (3) is arranged between the two first fixing rings (9), both ends of the roller (3) are fixedly connected with a mounting portion (11), the mounting portion (11) matches the inner wall of the first fixing ring (9), the mounting portion (11) is fixedly connected with a fitting portion (12) at one end away from the roller (3), the fitting portion (12) matches the inner wall of the extension ring (8), the fitting portion (12) is fixedly connected with a roller shaft (13) at one end away from the mounting portion (11), the roller shaft (13) is arranged inside the inner ring (4), and the roller shaft (13) matches the inner ring (4); The first cooling structure comprises a first cooling cavity (14), the first cooling cavity (14) is commonly provided inside the roller (3), inside the mounting portion (11), inside the fitting portion (12) and inside the roller shaft (13), a plurality of blocking ring plates (15) are fixedly connected to the inner wall of the first cooling cavity (14), the cross-sectional shape of the blocking ring plates (15) is set to be a trapezoid, the number of the roller shafts (13) is set to be two, a through hole (16) is provided at one end of the roller shaft (13) away from the roller (3), a first cooling water inlet pipe (17) is provided inside one of the through holes (16), and a first cooling water outlet pipe (18) is provided inside the other through hole (16), and the first cooling water inlet pipe (17) and the first cooling water outlet pipe (18) are respectively connected to the corresponding roller shaft (13) through a sealed bearing; The second cooling structure comprises a second cooling cavity (19); the second cooling cavity (19) is opened inside the shaft seat (1); a second cooling water inlet pipe (20) is provided on one side of the bottom of the shaft seat (1); a second cooling water outlet pipe (21) is provided on one side of the top of the shaft seat (1); the second cooling water inlet pipe (20) and the second cooling water outlet pipe (21) are both connected to the second cooling cavity (19).

2. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: The cross-sectional shape of the oil outlet pipe (7) is set to be L-shaped, and an oil outlet is provided at the outlet of the oil outlet pipe (7), and the oil outlet is arranged directly above the connection between the inner ring (4) and the extension ring (8).

3. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: The extension ring (8) is provided with a plurality of oil guide grooves (22), and the oil guide grooves (22) are arranged to be inclined downward.

4. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: A receiving tray (23) is fixedly connected to both sides of the shaft seat (1), and the receiving tray (23) is arranged at the bottom of the extension ring (8).

5. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: The mounting portion (11) and the first fixing ring (9) are both provided with a first fixing hole, the interior of the first fixing hole is connected with a first fixing bolt via a thread, and the mounting portion (11) and the first fixing ring (9) are fixedly connected via the first fixing bolt.

6. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: A sealing plug (24) is provided between the roller shaft (13) and the second fixing ring (10); a second fixing hole is provided on the second fixing ring (10), the sealing plug (24) and the roller shaft (13); a second fixing bolt is threadedly connected to the second fixing hole.

7. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: A soot blowing structure is provided on the top of the shaft seat (1), the soot blowing structure comprising an air duct (25), a plurality of air outlets (26) are provided at the bottom of the air duct (25), the air outlets (26) are arranged on the top of the shaft seat (1), a fan (27) is provided on one side of the shaft seat (1), and an output end of the fan (27) is connected to the air duct (25).

8. The assembly structure of a roller for a continuous casting machine according to claim 1, characterized in that: A guide plate (28) is fixedly connected to the outer surface of the first fixing ring (9), and the number of the guide plates (28) is set to be two.

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