Roller surface quenching device
By setting pressure plates and shock-absorbing components on both sides of the roll, the problem of roll displacement during quenching was solved, the roll position was stabilized and the rotation was smooth, and the quenching effect and the mechanical properties of the roll were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-06
AI Technical Summary
During the quenching process, the rolls are prone to shifting along the axial direction, resulting in poor quenching performance.
The method involves setting pressure plates on both sides of the roll, and installing shock-absorbing pads between the roll body and the pressure plates. Additionally, a shock-absorbing assembly is installed between the roll neck and the pressure plates. The position of the roll is restricted by the pressure plates and the shock-absorbing assembly, thereby reducing deviation.
It effectively stabilizes the position of the rolls, reduces wear, ensures a smooth quenching process, and improves roll performance and service life.
Smart Images
Figure CN223974155U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of roll manufacturing, and in particular to a roll surface quenching device. Background Technology
[0002] The manufacturing process of rolling mill rolls generally consists of casting, heat treatment, and machining. In addition to material composition and casting performance, the main factors determining the performance of castings are the heat treatment effect. Quenching is the most important heat treatment process for rolling mill rolls, and the quality of quenching largely determines the mechanical properties and service life of the rolling mill rolls.
[0003] like Figure 1 As shown, when the roll is being quenched, the cast roll needs to be placed between two rotating rolls, and then the quenching equipment is used to align the roll surface. At this time, the rotating roll is driven to rotate the roll. The rotation of the roll can make the quenching more uniform, thereby improving the performance of the roll.
[0004] Regarding the aforementioned technologies, the surfaces of the rotating roller and the rolling mill are relatively smooth. During rotation, the rolling mill may shift along the axial direction. At this time, the relative position of the quenching equipment and the rolling mill changes, which may lead to poor quenching performance. Summary of the Invention
[0005] The purpose of this application is to provide a roll surface quenching device for stabilizing the position of the roll during the quenching process and reducing the possibility of roll displacement.
[0006] The surface quenching device for rolling mills provided in this application adopts the following technical solution:
[0007] A roll surface quenching device includes a driving roll and a driven roll arranged parallel to each other for supporting the roll. Each of the two roll necks of the roll is provided with a pressure plate, and the two pressure plates abut against the two side walls of the roll body.
[0008] By adopting the above technical solution, when quenching the roll, two pressure plates are used to press the roll neck of the roll, and at the same time, the two pressure plates abut against the side wall of the roll body, thereby restricting the position of the roll and reducing the possibility of the roll moving during the quenching process.
[0009] Optionally, shock-absorbing pads are installed on the side of both pressure plates closest to the roll body.
[0010] By adopting the above technical solution, a rigid connection between the roll body and the pressure plate is avoided, reducing the possibility of roll wear.
[0011] Optionally, the pressure plate has an installation groove on its side wall near the roll neck, and a pair of shock-absorbing components are provided in the installation groove. The pair of shock-absorbing components are respectively located on both sides of the roll neck and abut against the roll neck.
[0012] By adopting the above technical solution, a rigid connection between the roll neck and the pressure plate is avoided, reducing the possibility of roll wear.
[0013] Optionally, the shock absorption assembly includes a sleeve fixedly connected to the bottom of the mounting groove, a plug rod slidably inserted into the sleeve, an abutment plate for abutting against the roll neck fixedly connected to one end of the plug rod away from the sleeve, and a spring provided on the outside of the sleeve and the plug rod, one end of the spring being fixedly connected to the bottom of the mounting groove, and the other end of the spring being fixedly connected to the abutment plate.
[0014] By adopting the above technical solution, when the pressure plate is pressed on the top of the roll neck, the weight of the pressure plate itself will be converted into the pressure of the abutment plate on the roll. At this time, the abutment plate will also apply pressure to the spring, and the spring will apply a reverse force to the abutment plate, thereby pressing the abutment plate on the roll, thus achieving the pressing effect on the roll. By setting interlocking sleeves and plug rods, the position of the abutment plate can be adjusted, thereby adapting to rolls of different diameters.
[0015] Optionally, the abutment plate is rotatably connected to a plurality of rollers near the end face of the roll neck.
[0016] By adopting the above technical solution, the sliding friction between the contact plate and the roll is transformed into rolling friction between the roller and the roll, thereby reducing the wear on the roll and ensuring smoother roll rotation.
[0017] Optionally, the base is provided with a second drive assembly that drives the two pressure plates to move along the axial direction of the roll.
[0018] By adopting the above technical solution, the position of the pressure plate in the axial direction of the roll can be adjusted, making it easier to move the pressure plate when the size of the roll changes.
[0019] Optionally, the second drive assembly includes a second motor, on which a bidirectional lead screw parallel to the roll is fixedly connected. Sliding tubes are slidably sleeved at positions with opposite thread directions on the bidirectional lead screw. Each sliding tube has a sliding ring threadedly connected to the bidirectional lead screw on both sides. A U-shaped connecting rod is provided at the outer wall of the sliding tube and the sliding ring to connect the two.
[0020] By adopting the above technical solution, when it is necessary to adjust the position of the pressure plate, one end of the connecting rod is inserted into the sliding ring and the other end is inserted into the sliding tube. At this time, the sliding tube and the sliding ring cannot rotate relative to each other. Then, the second motor is started, and the second motor drives the double-acting screw to rotate. When the double-acting screw rotates, it drives the sliding ring to move along the axial direction of the double-acting screw, thereby driving the pressure plate to move along the axial direction of the double-acting screw.
[0021] Optionally, a locking assembly for fixing the pressure plate is provided on the side of the base away from the driven roller.
[0022] By adopting the above technical solution, the pressure plate is fixed by using a locking assembly after adjusting its position.
[0023] Optionally, the locking assembly includes a connecting plate fixedly connected to the end of the pressure plate, a bolt is installed on the base, the connecting plate has a insertion hole for the bolt to pass through, and a locking nut is threaded onto the bolt.
[0024] By adopting the above technical solution, when it is necessary to fix the position of the pressure plate, the connecting plate is inserted into the bolt, and then the locking nut is used to press the connecting plate tight, thereby fixing the pressure plate.
[0025] Optionally, the insertion hole is elongated, and the length direction of the insertion hole is along the length direction of the pressure plate; the base is provided with a sliding groove for the bolt to move along the axial direction of the roll.
[0026] By adopting the above technical solution, when the connecting plate is connected to the bolt, because the connecting plate rotates under the drive of the pressure plate, it is necessary to ensure that the size of the insertion hole in the length direction of the pressure plate is larger than the diameter of the bolt, so as to avoid jamming when the bolt is inserted into the connecting plate; when the position of the pressure plate needs to be adjusted, the position of the bolt can be adjusted accordingly.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. When quenching rolls using quenching equipment, the position of the rolls needs to be limited. By setting pressure plates on both sides of the rolls, and setting damping pads between the roll body and the pressure plates, and setting damping components between the roll neck and the pressure plates, it is possible to limit the rolls from shifting while ensuring smooth roll rotation.
[0029] 2. When the size of the roll changes and the position of the pressure plate needs to be adjusted, insert the connecting rod into the sliding tube and sliding ring. At this time, ensure that the pressure plate is open and not pressing the roll. Next, start the second motor. The second motor drives the double-acting screw to rotate. When the double-acting screw rotates, it moves the two pressure plates to positions corresponding to the roll neck. At the same time, ensure that the distance between the pressure plate and the roll body is greater than the width of the shock-absorbing pad. Then, remove the connecting rod from the sliding tube and sliding ring, and manually move the pressure plate so that the pressure plate rotates along the double-acting screw. When the pressure plate is above the roll neck, the roller abuts against the roll neck. At this time, insert the connecting rod into the sliding tube and sliding ring, and then start the second motor to rotate in the opposite direction. When the pressure plate and the roll body simultaneously contact the shock-absorbing pad, turn off the second motor to complete the adjustment of the pressure plate position.
[0030] 3. Once the position of the pressure plate is determined, simultaneously move the position of the bolts so that the connecting plate can be smoothly inserted into the bolts. Then, install the lock nut on the bolts so that the lock nut tightens the bolts, thereby fixing the pressure plate. Attached Figure Description
[0031] Figure 1 This is a schematic diagram illustrating the structure of roll quenching in the background art of this application;
[0032] Figure 2 This is a schematic diagram illustrating the structure of the pressure plate pressing the roll during roll quenching in the embodiments of this application;
[0033] Figure 3 This is a schematic diagram illustrating the structure of the first driving component in an embodiment of this application;
[0034] Figure 4 This is a schematic diagram illustrating the structure of the second driving component in an embodiment of this application;
[0035] Figure 5 This is a structural schematic diagram illustrating the pressure plate and shock absorption assembly in the embodiments of this application;
[0036] Figure 6 yes Figure 5 A magnified view of part A in the middle;
[0037] Figure 7 This is a schematic diagram illustrating the structure of the locking assembly in the embodiments of this application;
[0038] In the diagram, 1. Base; 11. Mounting seat; 12. Drive roller; 13. Driven roller; 14. Bearing seat; 15. Sliding groove; 16. Limiting groove; 2. First drive assembly; 21. First motor; 22. Reducer; 23. First transmission shaft; 24. First transmission gear; 25. Second transmission shaft; 26. Second transmission gear; 27. Third transmission gear; 28. Gear ring; 3. Pressure plate; 31. Mounting groove; 4. Second drive assembly; 41. Second motor; 42. Bidirectional lead screw; 43. Sliding tube; 44. Sliding ring; 45. Connecting rod; 5. Locking assembly; 51. Connecting plate; 511. Insertion hole; 52. Bolt; 53. Locking nut; 54. Limiting block; 6. Shock-absorbing pad; 7. Shock-absorbing assembly; 71. Sleeve; 72. Insertion rod; 73. Abutment plate; 74. Spring; 75. Abutment rod; 76. Roller. Detailed Implementation
[0039] The following is in conjunction with the appendix Figure 2 -Appendix Figure 7 This application will be described in further detail below.
[0040] This application discloses a roll surface quenching device, referring to... Figure 1 The system includes a base 1, on which two mounting seats 11 are fixedly mounted, arranged opposite each other along the length of the base 1. A drive roller 12 is positioned between the two mounting seats 11, with its axial direction along the line connecting the two mounting seats 11. A driven roller 13 is also positioned between the two mounting seats 11, parallel to the drive roller 12. Bearing seats 14 are rotatably connected to both ends of the drive roller 12 and the driven roller 13, and the bearing seats 14 are fixedly mounted on the mounting seats 11. A first drive assembly 2 for driving the drive roller 12 to rotate is also provided on the base 1. During quenching of the roll, the roll is placed between the drive roller 12 and the driven roller 13, with the gap between the drive roller 12 and the driven roller 13 being smaller than the diameter of the roll.
[0041] The first drive assembly 2 includes a first motor 21 fixedly mounted on a base 1. The first motor 21 is located on one of the mounting seats 11 away from the drive roller 12. A reducer 22 is connected to the first motor 21, and a first drive shaft 23 is connected to the reducer 22. The first drive shaft 23 passes through the mounting seat 11 and is parallel to the drive roller 12. A first drive gear 24 is fixedly sleeved at the end of the first drive shaft 23 away from the reducer 22. A second drive shaft 25 is rotatably mounted on the base 1, and the second drive shaft 25 is parallel to the first drive shaft 23. A second drive gear 26 and a third drive gear 27 are fixedly sleeved on the second drive shaft 25. A gear ring 28 is fixedly sleeved on the drive roller 12. The first drive gear 24 meshes with the second drive gear 26, and the third drive gear 27 meshes with the gear ring 28.
[0042] When the roll needs to be quenched, the first motor 21 is started. The first motor 21 drives the first transmission shaft 23 to rotate through the reducer 22. When the first transmission shaft 23 rotates, it drives the second transmission shaft 25 to rotate through the meshing relationship between the first transmission gear 24 and the second transmission gear 26. When the second transmission shaft 25 rotates, it drives the drive roll 12 to rotate through the meshing relationship between the third transmission gear 27 and the gear ring 28. Since the roll is placed between the drive roll 12 and the driven roll 13, and there is friction between the roll and the drive roll 12 and the driven roll 13, the drive roll 12 will drive the roll and the driven roll 13 to rotate together, thereby realizing the circumferential surface quenching of the roll.
[0043] The roll consists of a roll body with a larger diameter in the middle and roll necks with smaller diameters at both ends. Arc-shaped pressure plates 3 are provided on the upper side of both roll necks. These pressure plates 3 on both sides of the roll body prevent the roll from shifting during rotation. Since the size of the roll is variable, a second drive assembly 4 is provided on the base 1, located near the driven roll 13, to drive the two pressure plates 3 to move along the roll axial direction, thus ensuring that the pressure plates 3 are adaptable to rolls of different sizes.
[0044] The second drive assembly 4 includes a second motor 41 fixedly mounted on the base 1, and a bidirectional lead screw 42 fixedly connected to the output shaft of the second motor 41; each pressure plate 3 is fixedly connected to a sliding tube 43 near the end of the bidirectional lead screw 42, the two sliding tubes 43 are located at opposite thread directions of the bidirectional lead screw 42, the sliding tubes 43 are sleeved on the bidirectional lead screw 42 and slidably connected to the bidirectional lead screw 42; a sliding ring 44 is provided at both ends of each sliding tube 43, the sliding ring 44 is also sleeved on the bidirectional lead screw 42 and threadedly connected to the bidirectional lead screw 42; a U-shaped connecting rod 45 is provided between the sliding tube 43 and the sliding ring 44, one end of the connecting rod 45 is inserted into the sliding tube 43, and the other end of the connecting rod 45 is inserted into the sliding ring 44.
[0045] When the position of the pressure plate 3 needs to be adjusted, one end of the connecting rod 45 is inserted into the sliding ring 44 and the other end is inserted into the sliding tube 43. At this time, the sliding tube 43 and the sliding ring 44 cannot rotate relative to each other. Then, the second motor 41 is started. The second motor 41 drives the double-acting screw 42 to rotate. When the double-acting screw 42 rotates, it drives the sliding ring 44 to move along the axial direction of the double-acting screw 42, thereby driving the pressure plate 3 to move along the axial direction of the double-acting screw 42. When the two pressure plates 3 abut against the side wall of the roll body, the axial movement of the roll can be restricted.
[0046] A locking assembly 5 is provided at the end of the pressure plate 3 away from the bidirectional lead screw 42. When the roll needs to be pressed, the locking assembly 5 is used to fix the pressure plate 3 to the base 1. The locking assembly 5 includes a connecting plate 51 fixedly connected to the end of the pressure plate 3. When the pressure plate 3 is pressed onto the roll, the connecting plate 51 is parallel to the base 1. Insertion holes 511 are respectively opened on the connecting plate 51 on both sides of the pressure plate 3. The insertion holes 511 are elongated and their length direction is along the length direction of the pressure plate 3. Bolts 52 are installed on the base 1 at positions corresponding to the insertion holes 511. When the pressure plate 3 is pressed onto the roll, the bolts 52 pass through the insertion holes 511 on the connecting plate 51, and then a locking nut 53 is installed on the bolt 52, thereby locking and fixing the pressure plate 3.
[0047] Since the pressure plate 3 drives the connecting plate 51 to rotate, it is necessary to ensure that the dimension of the insertion hole 511 in the length direction of the pressure plate 3 is greater than the diameter of the bolt 52, so as to avoid jamming when the bolt 52 is inserted into the connecting plate 51.
[0048] A sliding groove 15 is provided at the position of each bolt 52 on the base 1. The length direction of the sliding groove 15 is the axial direction of the roll. A limiting groove 16 with a width greater than the sliding groove 15 is provided at the bottom of the sliding groove 15. A limiting block 54 is fixedly connected to the bottom of the bolt 52. The limiting block 54 is cylindrical and its diameter is equal to the width of the limiting groove 16. When it is necessary to lock the pressure plate 3, the position of the bolt 52 must first be moved to ensure that the bolt 52 corresponds to the insertion hole 511 on the connecting plate 51. After the bolt 52 is passed through the insertion hole 511, it is locked and fixed by using the lock nut 53.
[0049] Because performance is a critical consideration during the manufacturing process of the rolls, the roll surface must be smooth to minimize wear. To avoid a rigid connection between the pressure plate 3 and the roll, a shock-absorbing pad 6, made of rubber, is fixedly installed on the side wall of the pressure plate 3 near the roll body. An installation groove 31 is formed on the inner wall of the pressure plate 3 where it contacts the roll neck, and a pair of shock-absorbing components 7 are installed within the installation groove 31 to abut against the roll neck. The pair of shock-absorbing components 7 are located on opposite sides of the roll neck.
[0050] The shock absorption assembly 7 includes a sleeve 71 fixedly connected to the bottom of the mounting groove 31, a plug rod 72 slidably inserted into the sleeve 71, both the sleeve 71 and the plug rod 72 being arc-shaped and having the same arc as the pressure plate 3; an abutment plate 73 is fixedly connected to the end of the plug rod 72 away from the bottom of the mounting groove 31, a spring 74 is circumferentially sleeved on the sleeve 71 and the plug rod 72, one end of the spring 74 is fixedly connected to the bottom of the mounting groove 31 of the pressure plate 3, and the other end of the spring 74 is fixedly connected to the abutment plate 73; an abutment rod 75 is fixedly connected to the end face of the abutment plate 73 facing the roll, the longitudinal section of the abutment rod 75 being circular; a plurality of rollers 76 are sleeved on the abutment rod 75, the rollers 76 being rotatably connected to the abutment rod 75, and the outer wall of the rollers 76 abuts against the neck of the roll.
[0051] When the roll needs to be pressed, the roller 76 on the abutment rod 75 comes into contact with the roll. At this time, due to the weight of the pressure plate 3 itself, and the spring 74 applying pressure to the abutment plate 73, the roller 76 will press tightly against the roll, thereby applying a certain pressure to the roll without affecting its rotation, thus ensuring that the roll is more stable when rotating.
[0052] The implementation principle of this application embodiment is as follows: When the roll needs to be quenched, the roll is first placed between the driving roll 12 and the driven roll 13. Then, the connecting rod 45 is inserted into the sliding tube 43 and the sliding ring 44. At this time, the pressure plate 3 is open and does not press the roll. Next, the second motor 41 is started. The second motor 41 drives the bidirectional screw 42 to rotate. When the bidirectional screw 42 rotates, it drives the two pressure plates 3 to be located at positions corresponding to the roll neck. At the same time, it is necessary to ensure that the distance between the pressure plate 3 and the roll body is greater than the width of the shock-absorbing pad 6. Then, the connecting rod 45 is removed from the sliding tube 43 and the sliding ring 44, and the pressure plate 3 is manually moved so that the pressure plate 3 moves along the... The double-acting screw 42 rotates, and when the pressure plate 3 is above the roll neck, the roller 76 abuts against the roll neck. At this time, the connecting rod 45 is inserted into the sliding tube 43 and the sliding ring 44, and then the second motor 41 is started to rotate in the opposite direction. When the pressure plate 3 and the roll body simultaneously contact the shock-absorbing pad 6, the second motor 41 is turned off. At this time, the pressure plate 3 achieves the function of limiting and pressing the roll. Then, the pressure plate 3 is locked with bolts 52 and locking nuts 53. Finally, the first motor 21 is started, and the first motor 21 drives the active roller 12 to rotate. The active roller 12 drives the roll and the driven roller 13 to rotate. Then, the roll is quenched using a quenching equipment.
[0053] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.
Claims
1. A roll surface quenching device comprising a base (1) and a driving roll (12) and a driven roll (13) arranged parallel to each other for supporting a roll, characterized in that, The upper part of the two roll necks of the roller is provided with a pressing plate (3), and the two pressing plates (3) are in abutment with the two side walls of the roller body.
2. A roll surface quenching device according to claim 1, wherein Two said pressing plate (3) near the roller body side is equipped with shock pad (6).
3. A roller surface quenching device according to claim 1 or 2, characterized in that The side wall of the pressing plate (3) near the roll neck is provided with a mounting groove (31), and a pair of damping components (7) are arranged in the mounting groove (31). A pair of damping components (7) are arranged on both sides of the roll neck and abut against the roll neck.
4. A roll surface quenching device according to claim 3, wherein The damping component (7) comprises a sleeve (71) fixedly connected to the groove bottom of the mounting groove (31), a plug-in rod (72) is slidably inserted into the sleeve (71), one end of the plug-in rod (72) away from the sleeve (71) is fixedly connected with an abutting plate (73) for abutting against the roll neck, a spring (74) is arranged on the outer side of the sleeve (71) and the plug-in rod (72), one end of the spring (74) is fixedly connected with the groove bottom of the mounting groove (31), and the other end of the spring (74) is fixedly connected with the abutting plate (73).
5. A roll surface quenching device according to claim 4, wherein The end face of the abutting plate (73) near the roll neck is rotatably connected with a plurality of rollers (76).
6. A roll surface quenching device according to claim 5, wherein The base (1) is provided with a second driving assembly (4) for driving the two pressing plates (3) to move along the roller axis.
7. A roll surface quenching device according to claim 6, wherein The second driving assembly (4) comprises a second motor (41), a bidirectional screw (42) parallel to the roller is fixedly connected to the second motor (41), a sliding tube (43) is slidably connected to the bidirectional screw (42) at positions with opposite screw rotation directions, a sliding ring (44) is arranged on the two sides of each sliding tube (43) and threadedly connected with the bidirectional screw (42), and a U-shaped connecting rod (45) is arranged on the outer side wall of the sliding tube (43) and the sliding ring (44) and connected therewith.
8. A roll surface quenching device according to claim 7, wherein The base (1) is provided with a locking assembly (5) for fixing the pressing plate (3) on the side away from the driven roller (13).
9. A roll surface quenching device according to claim 8, wherein The locking assembly (5) comprises a connecting plate (51) fixedly connected to the end of the pressing plate (3), a bolt (52) is mounted on the base (1), a plug-in hole (511) is formed in the connecting plate (51) and through which the bolt (52) passes, and a locking nut (53) is threadedly connected with the bolt (52).
10. A roll surface quenching device according to claim 9, wherein The plug-in hole (511) is long strip-shaped, and the length direction of the plug-in hole (511) is along the length direction of the pressing plate (3); and a sliding groove (15) is formed in the base (1) and through which the bolt (52) moves along the roller axis.