Anti-blocking steel wear-resistant loop guide roller of finishing mill group

Abstract

The utility model discloses a finishing mill group anti-blocking steel wear-resisting loop guide roller which comprises a roller shaft body, a bearing set and a roller ring body, the roller shaft body comprises a first roller shaft section, a first step section, a second roller shaft section, a second step section and a third roller shaft section, a first positioning seat is installed on the first step section, and a second positioning seat is installed on the third step section. The bearing set is installed on the second roller shaft section between the first step section and the second step section, a bearing sleeve is installed on the outer side of the bearing set, the first positioning seat is fixedly connected with one end of the bearing sleeve through a plurality of fastening screws, the roller ring body is installed on the outer side of the bearing sleeve in a sleeving mode, and a threaded shaft sleeve is installed on the third roller shaft section. A second positioning seat is arranged on the outer side of the threaded shaft sleeve, the second positioning seat, the threaded shaft sleeve and the bearing sleeve are connected and fixed through multiple sets of locking assemblies, and multiple sets of hydraulic positioning assemblies are arranged in the roller ring body. According to the device, the phenomenon that the roller ring body is loosened or falls off can be avoided, the abrasion condition of the roller ring body can be reduced, and constant-speed rotation of the roller ring body can be kept for a long time.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel rolling production equipment, specifically relating to a wear-resistant slip guide roller for anti-clogging steel rolling mill units. Background Technology

[0002] The finishing mill is generally located in the middle of the roughing mill or behind the hot coil box. Its specific components include: a roller table before the flying shear, side guide plates for the flying shear, a flying shear speed measuring device, edge heaters, the flying shear and cutting head collection device, a finishing mill descaling box, a vertical roll mill before the finishing mill, the finishing mill itself, a looper device, inlet and outlet guide plates for the finishing mill, a dust removal device for the finishing mill, and a roll changing device for the finishing mill. The looper guide roll is a major consumable spare part in the finishing mill. During rolling, it ensures that the hot steel smoothly enters the wheel groove, preventing tangling and tailing, and acts as a guide and clamp. Looper guide rolls typically have a large contact area and high wear resistance to withstand the enormous pressure and friction generated during rolling. In existing technology, the loose guide rolls used in finishing mills mainly consist of a roller shaft, bearings mounted on the roller shaft, a bearing housing outside the bearing, a sealing end cap and a labyrinth ring inside the bearing, and the bearing housing and sealing end cap connected by connecting bolts to form an assembly. A tungsten carbide roller ring is mounted on the bearing housing and fixed by the end cap and two bolts, forming the tungsten carbide loose guide roll. This structure of guide roll has the following shortcomings during use: First, the connection strength between the bearing housing and the sealing end cap is low, resulting in poor stability after connection. During the conveying of red-hot wire, the roller ring is prone to detachment or loosening, leading to unstable conveying of the red-hot wire and affecting the quality of finishing. Second, the roller ring is mounted on the outside of the bearing housing. Due to the gap between the bearing sleeve and the roller ring, the transmission between the bearing sleeve and the roller ring is uncoordinated, leading to increased wear between the bearing sleeve and the roller ring. As the gap between the bearing sleeve and the roller ring increases over time, uneven rotation of the roller ring will occur. Therefore, it is an objective need to develop a wear-resistant, slip-on guide roller for a finishing mill that is structurally sound, easy to use, has good connection stability, and operates stably. Summary of the Invention

[0003] The purpose of this utility model is to provide a wear-resistant steel slip guide roller for a finishing mill that has a reasonable structure, is easy to use, has good connection stability, and runs stably.

[0004] The purpose of this utility model is achieved as follows: it includes a roller shaft body, a bearing assembly, and a roller ring body. The roller shaft body includes a first roller shaft segment, a first stepped segment, a second roller shaft segment, a second stepped segment, and a third roller shaft segment, all integrally machined. A first positioning seat is installed on the first stepped segment. The bearing assembly is installed on the second roller shaft segment between the first and second stepped segments. A bearing sleeve is installed on the outside of the bearing assembly, and one end of the bearing sleeve is fitted onto the outside of the second stepped segment and the third roller shaft segment. The first positioning seat is fixedly connected to one end of the bearing sleeve by multiple fastening screws. The roller ring body is fitted onto the outside of the bearing sleeve and makes movable contact with the first positioning seat. A threaded bushing that abuts against the bearing sleeve is installed on the third roller shaft segment. A second positioning seat that makes movable contact with the bearing sleeve and the roller ring body is provided on the outside of the threaded bushing. The second positioning seat, the threaded bushing, and the bearing sleeve are connected and fixed by multiple sets of locking components. Multiple sets of hydraulic positioning components are evenly distributed along the circumference of the roller ring body.

[0005] Compared with existing technologies, the advantages of this device are as follows: First, this device optimizes the structure of the roller body and uses multiple sets of locking components and threaded bushings to connect and fix the second positioning seat and the bearing sleeve. This increases the connection strength between the second positioning seat and the bearing sleeve, improves the connection stability between the roller ring and the bearing sleeve, avoids the roller ring from loosening or falling off, and ensures the stability of the roller ring during rotation, thus improving the stable conveying of red-hot steel wire. Second, the multiple sets of hydraulic positioning components can connect the roller ring and the bearing sleeve, ensuring that the roller ring and the bearing sleeve always maintain a tight contact, preventing the roller ring and the bearing sleeve from separating, reducing the wear of the roller ring, and improving the connection stability between the roller ring and the bearing sleeve. This allows the roller ring to maintain uniform rotation for a long time. This device has the advantages of reasonable structure, convenient use, and stable operation, and is easy to promote and use. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0007] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0008] Figure 3 for Figure 1 Enlarged schematic diagram of part B;

[0009] In the diagram: 1-Bearing assembly, 2-Roller ring body, 3-First roller shaft section, 4-First stepped section, 5-Second roller shaft section, 6-Second stepped section, 7-Third roller shaft section, 8-First positioning seat, 9-Bearing sleeve, 10-Fasting screw, 11-Threaded bushing, 12-Second positioning seat, 13-Limiting rod, 14-Locking rod, 15-Limiting groove, 16-Adjusting cavity, 160-Limiting plate, 161-Limiting spring, 17-Locking groove, 18-Locking nut, 19-Positioning end cover, 20-Push rod, 21-Sealing plate, 22-Oil inlet pipe, 23-Hydraulic cavity, 24-Telescopic spring, 25-Lubrication cavity, 26-Piston, 27-Friction plate, 28-Moving rod, 29-Arc groove, 30-Arc boss. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0011] like Figures 1 to 3 As shown, this utility model includes a roller shaft body, a bearing assembly 1, and a roller ring body 2. The roller ring body 2 adopts a roller ring structure made of tungsten carbide material used in the prior art. The roller shaft body includes a first roller shaft section 3, a first stepped section 4, a second roller shaft section 5, a second stepped section 6, and a third roller shaft section 7, all integrally machined. The multi-segment structure facilitates the installation of the roller ring body 2. The bearing assembly 1 is assembled from multiple bearings, and the number of bearings can be determined according to actual usage needs. A first positioning seat 8 is installed on the first stepped section 4. The bearing assembly 1 is installed on the second roller shaft section 5 between the first stepped section 4 and the second stepped section 6. A bearing sleeve 9 is installed on the outer side of the bearing assembly 1. One end of the bearing sleeve 9 is fitted onto the outside of the second stepped section 6 and the third roller shaft section 7. The first positioning seat 8 is fixedly connected to one end of the bearing sleeve 9 by multiple fastening screws 10. The roller ring body 2 is fitted onto the outside of the bearing sleeve 9 and is in movable contact with the first positioning seat 8. A threaded bushing 11 that is in tight contact with the bearing sleeve 9 is installed on the third roller shaft section 7. A second positioning seat 12 that is in movable contact with the bearing sleeve 9 and the roller ring body 2 is provided on the outside of the threaded bushing 11. The second positioning seat 12, the threaded bushing 11 and the bearing sleeve 9 are connected and fixed by multiple sets of locking components. Multiple sets of hydraulic positioning components are evenly distributed along the circumference of the roller ring body 2.

[0012] When this device is installed on the finishing mill, the first positioning seat 8 is first installed on the first stepped section 4, and the bearing assembly 1 is installed on the second roll section 5. Then, the bearing sleeve 9 is installed on the outside of the bearing assembly 1, and the roll ring 2 is installed on the outside of the bearing sleeve 9. Next, the threaded bushing 11 is installed on the third roll section 7. Finally, the second positioning seat 12 is installed on the threaded bushing 11, ensuring that the bearing sleeve 9 and the end of the roll ring 2 are in contact. The second positioning seat 12, the threaded bushing 11, and the bearing sleeve 9 are then connected and fixed using locking components. Finally, the first roll section 3 is installed on the finishing mill base for use. This device utilizes multiple sets of locking components and threaded bushings 11 to achieve the second positioning... The connection and fixation between the second positioning seat 12 and the bearing sleeve 9 increases the connection strength between the second positioning seat 12 and the bearing sleeve 9, improves the connection stability between the roller ring 2 and the bearing sleeve 9, and prevents the roller ring 2 from loosening or falling off. This ensures the stability of the roller ring 2 during rotation and improves the stable conveying of red steel wire. Moreover, the multiple sets of hydraulic positioning components can connect the roller ring 2 and the bearing sleeve 9, ensuring that the roller ring 2 and the bearing sleeve 9 always maintain a tight contact, preventing the roller ring 2 and the bearing sleeve 9 from separating, reducing the wear of the roller ring 2, improving the connection stability between the roller ring 2 and the bearing sleeve 9, and maintaining the uniform rotation of the roller ring 2 for a long time.

[0013] Furthermore, the locking assembly includes a limiting rod 13 and a locking rod 14. The threaded bushing 11 has a groove machined along its radial direction. The second positioning seat 12 has a limiting groove 15 that matches the groove. The limiting groove 15 has an adjusting cavity 16, the diameter of which is larger than the diameter of the limiting groove 15. The limiting rod 13 passes through the limiting groove 15 and is inserted into the groove. An elastic element is installed on the limiting rod 13 in the adjusting cavity 16. The second positioning seat 12 has a locking groove 17 that communicates with the limiting groove 15 along its axial direction. The end of the bearing sleeve 9 has a threaded groove corresponding to the locking groove 17. The limiting rod 13 is machined with a guide hole corresponding to the locking groove 17. The locking rod 14 has threaded sections at both ends. One end of the locking rod 14 passes through the locking groove 17 and the guide hole and is threaded into the threaded groove. The other end of the locking rod 14 is connected and fixed to the second positioning seat 12 through the locking nut 18. The cooperation of the limiting rod 13 and the locking rod 14 can position the second positioning seat 12, the threaded bushing 11 and the bearing sleeve 9 in the axial and radial directions, thereby improving the connection strength and stability between the three, facilitating better positioning of the roller ring 2, and ensuring the accurate transmission of the red steel wire by the roller ring 2. Preferably, the elastic element includes a limiting plate 160 and a limiting spring 161. The limiting plate 160 is installed on the outside of the limiting rod 13 inside the adjusting cavity 16. The limiting plate 160 slides in contact with the inner wall of the adjusting cavity 16. The limiting spring 161 is fitted on the limiting rod 13 and is located inside the adjusting cavity 16 near the locking rod 14. The setting of the limiting spring 161 and the limiting plate 160 can improve the connection stability between the second positioning seat and the threaded bushing.

[0014] Furthermore, in order to improve the stability of the connection between the first positioning seat 8 and the bearing sleeve 9, a positioning end cover 19 is provided between the first step section 4 and the first positioning seat 8. A spiral labyrinth groove is machined on the positioning end cover 19 near the first positioning seat 8. A spiral boss matching the spiral labyrinth groove is machined on the first positioning seat 8. The spiral boss is located in the spiral labyrinth groove.

[0015] Furthermore, the hydraulic positioning assembly includes a push rod 20, a sealing plate 21, and an oil inlet pipe 22. A hydraulic cavity 23 is machined along the axial direction on the roller ring 2 near the second positioning seat 12. The sealing plate 21 is movably installed within the hydraulic cavity 23. A telescopic spring 24 connected to the sealing plate 21 is installed in the hydraulic cavity 23 on one side of the sealing plate 21. The push rod 20 is installed in the hydraulic cavity 23 on the other side of the sealing plate 21. The end of the push rod 20 slides in contact with the second positioning seat 12. The oil inlet pipe 22 connects to the telescopic spring 24 on one side of the sealing plate 21. The hydraulic chamber 23 is connected, and the oil inlet pipe 22 is arranged along the axial direction of the roller ring body 2. Multiple lubrication chambers 25, which are connected to the oil inlet pipe 22, are spaced apart inside the roller ring body 2. A piston 26 is slidably installed in each lubrication chamber 25. Multiple friction plates 27, matching the lubrication chambers 25, are arranged between the roller ring body 2 and the bearing sleeve 9. A movable rod 28 is installed in the lubrication chamber 25 between the piston 26 and the friction plates 27. Hydraulic oil is injected into the hydraulic chamber 23. When the second positioning seat 12 approaches the roller ring body 2, the second positioning seat 12 pushes the push rod 20. The sealing plate 21 moves closer to the telescopic spring 24, thereby pushing the hydraulic oil in the hydraulic chamber 23 into the lubrication chamber 25 through the oil inlet pipe 22. When the hydraulic oil enters the lubrication chamber 25, it pushes the piston 26, the movable rod 28, and the friction plate 27 towards the bearing sleeve 9. When the friction plate 27 is in close contact with the bearing sleeve 9, the roller ring 2 and the bearing sleeve 9 are tightly connected. When the roller ring 2 rotates, the piston 26, the movable rod 28, and the friction plate 27 are all subjected to centrifugal force during rotation. The hydraulic oil flows through the roller ring 2 during its rotation. There will be no flow, thus ensuring that the friction plate 27 and the bearing sleeve 9 always remain in close contact, thereby avoiding the connection between the roller ring 2 and the bearing sleeve 9 when gaps are generated during the rotation of the roller ring 2. In order to improve the tightness of the connection between the roller ring 2 and the bearing sleeve 9, an arc groove 29 is machined on the inner side of the roller ring 2, and an arc boss 30 matching the arc groove 29 is provided on the outer side of the bearing sleeve 9. The arc boss 30 and the arc groove 29 slide in fit, and the friction plate 27 is installed between the arc boss 30 and the arc groove 29.

Claims

1. A wear-resistant slip-on guide roll for anti-clogging steel in a finishing mill, comprising a roll shaft body, a bearing assembly (1), and a roll ring body (2), characterized in that: The roller body comprises a first roller section (3), a first stepped section (4), a second roller section (5), a second stepped section (6), and a third roller section (7), all integrally machined. A first positioning seat (8) is installed on the first stepped section (4). The bearing assembly (1) is installed on the second roller section (5) between the first stepped section (4) and the second stepped section (6). A bearing sleeve (9) is installed on the outside of the bearing assembly (1), and one end of the bearing sleeve (9) is sleeved on the outside of the second stepped section (6) and the third roller section (7). The first positioning seat (8) is connected to the roller by multiple fastening screws (10). One end of the bearing sleeve (9) is fixedly connected. The roller ring body (2) is fitted on the outside of the bearing sleeve (9) and is in movable contact with the first positioning seat (8). A threaded bushing (11) that is in tight contact with the bearing sleeve (9) is installed on the third roller shaft section (7). A second positioning seat (12) that is in movable contact with the bearing sleeve (9) and the roller ring body (2) is provided on the outside of the threaded bushing (11). The second positioning seat (12), the threaded bushing (11) and the bearing sleeve (9) are connected and fixed by multiple sets of locking components. Multiple sets of hydraulic positioning components are evenly distributed in the roller ring body (2) along the circumferential direction of the roller ring body (2).

2. The anti-clogging, wear-resistant, slip-on guide roll for a finishing mill as described in claim 1, characterized in that: The locking assembly includes a limiting rod (13) and a locking rod (14). The threaded bushing (11) has a groove machined along its radial direction. The second positioning seat (12) has a limiting groove (15) that matches the groove. The limiting groove (15) has an adjusting cavity (16) machined on it. The diameter of the adjusting cavity (16) is larger than the diameter of the limiting groove (15). The limiting rod (13) passes through the limiting groove (15) and is inserted into the groove. An elastic element is installed on the limiting rod (13) in the adjusting cavity (16). The second positioning seat (14) 12) A locking groove (17) communicating with the limiting groove (15) is machined along the axial direction. The end of the bearing sleeve (9) is provided with a threaded groove corresponding to the locking groove (17). The limiting rod (13) is machined with a guide hole corresponding to the locking groove (17). Both ends of the locking rod (14) are provided with threaded sections. One end of the locking rod (14) passes through the locking groove (17) and the guide hole and is threaded into the threaded groove. The other end of the locking rod (14) is connected and fixed to the second positioning seat (12) through the locking nut (18).

3. The anti-clogging, wear-resistant, slip-on guide roll for a finishing mill as described in claim 2, characterized in that: The elastic element includes a limiting plate (160) and a limiting spring (161). The limiting plate (160) is installed on the outside of the limiting rod (13) in the adjustment cavity (16). The limiting plate (160) slides in contact with the inner wall of the adjustment cavity (16). The limiting spring (161) is fitted on the limiting rod (13) and is located in the adjustment cavity (16) near the locking rod (14).

4. The anti-clogging, wear-resistant, slip-on guide roll for a finishing mill as described in claim 1, characterized in that: A positioning end cap (19) is provided between the first step section (4) and the first positioning seat (8). A spiral labyrinth groove is machined on the positioning end cap (19) near the first positioning seat (8). A spiral boss matching the spiral labyrinth groove is machined on the first positioning seat (8). The spiral boss is located in the spiral labyrinth groove.

5. The anti-clogging, wear-resistant, slip-on guide roll for a finishing mill as described in claim 1, characterized in that: The hydraulic positioning assembly includes a push rod (20), a sealing plate (21), and an oil inlet pipe (22). A hydraulic cavity (23) is machined along the axial direction on the roller ring (2) near the second positioning seat (12). The sealing plate (21) is movably installed within the hydraulic cavity (23). A telescopic spring (24) connected to the sealing plate (21) is installed in the hydraulic cavity (23) on one side of the sealing plate (21). The push rod (20) is installed in the hydraulic cavity (23) on the other side of the sealing plate (21). The end of the push rod (20) slides in contact with the second positioning seat (12). The oil inlet pipe (22) is connected to the hydraulic chamber (23) on one side of the telescopic spring (24). The oil inlet pipe (22) is arranged along the axial direction of the roller ring body (2). The roller ring body (2) is provided with a plurality of lubrication chambers (25) that are connected to the oil inlet pipe (22) at intervals. A piston (26) is slidably installed in the lubrication chamber (25). A plurality of friction plates (27) that match the lubrication chamber (25) are provided between the roller ring body (2) and the bearing sleeve (9). A movable rod (28) is installed in the lubrication chamber (25) between the piston (26) and the friction plate (27).

6. The anti-clogging steel wear-resistant slip-on guide roll for a finishing mill according to claim 5, characterized in that: The inner side of the roller ring body (2) is machined with an arc groove (29), and the outer side of the bearing sleeve (9) is provided with an arc boss (30) that matches the arc groove (29). The arc boss (30) and the arc groove (29) slide together. The friction plate (27) is installed between the arc boss (30) and the arc groove (29).

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