Eccentric adjusting device of continuous rolling speed reducer for coiling machine
By designing an eccentric adjustment device for the continuous rolling mill reducer of the coiler, the problem of meshing accuracy decay of traditional reducers under high torque, strong impact and high temperature conditions was solved, realizing adjustment without disassembly and fine adjustment, and improving production efficiency and production line stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUOYANG YONGJI HEAVY DUTY GEAR CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional speed reducers suffer from reduced meshing accuracy when operating under high torque, strong impact, and high temperature conditions, leading to excessive tooth direction error, excessive vibration, and tooth breakage. Furthermore, existing adjustment methods require machine shutdown and disassembly, which affects production efficiency.
Design an eccentric adjustment device for a continuous rolling mill reducer for a coiler. Through an eccentric ring structure and adjustment mechanism, adjustment can be achieved without disassembly. This allows for fine adjustment of the reducer without stopping the machine, improving meshing accuracy and the continuous operation capability of the production line.
This enabled precise adjustment of the speed reducer, shortened adjustment time, improved production efficiency, and ensured stable operation of the production line.
Smart Images
Figure CN224201075U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of speed reducer adjustment devices, specifically relating to an eccentric adjustment device for a continuous rolling speed reducer used in a coiler. Background Technology
[0002] As a core piece of equipment in a continuous rolling production line, the coiler's reducer needs to operate for extended periods under conditions of high torque (≥500kN·m), strong impact (overload coefficient 2.5+), and high temperature (≤150℃). Traditional reducers suffer from meshing accuracy decay during commissioning and operation. The gear pairs are affected by alternating impact loads and thermal deformation, leading to excessive tooth direction errors and increased tooth surface off-center loading rates. This can cause faults such as excessive vibration and tooth breakage, affecting the stable operation of the production line.
[0003] Existing speed reducer adjustment methods mostly require machine shutdown and disassembly, which conflicts with the continuous production requirements of continuous rolling lines. The adjustment accuracy depends on the worker's experience, making it inconvenient to adjust the speed reducer without stopping and disassembling it during operation. It is also inconvenient to make precise dynamic adjustments to the meshing of the speed reducer gear pairs, and the adjustment time is relatively long, which affects production efficiency. Utility Model Content
[0004] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides an eccentric adjustment device for a continuous rolling mill reducer used in a coiling machine. This eccentric adjustment device enables adjustment without disassembly, significantly reducing adjustment time. Through the adjustment mechanism, the eccentric ring structure can be driven to perform fine adjustment of the reducer structure, improving adjustment accuracy and enhancing the meshing effect of the reducer. Furthermore, the eccentric ring structure can be dynamically adjusted without affecting the operation of the reducer, allowing for timely adjustment and compensation of areas where meshing accuracy has decreased, thus ensuring the normal and continuous operation of the production line and improving production efficiency.
[0005] An eccentric adjustment device for a continuous rolling mill reducer for a coiler includes an outer sleeve and an outer end cap. An eccentric ring structure is rotatably connected inside the outer sleeve, and a bearing sleeve is embedded inside the eccentric ring structure. A cylindrical roller bearing is connected inside the bearing sleeve via a spline. The outer end cap is coaxially corresponding to the outer sleeve and is fixedly installed at the end of the outer sleeve. An adjustment mechanism for driving the eccentric ring structure is provided inside the outer end cap, and the adjustment mechanism is drively connected to the eccentric ring structure.
[0006] Preferably, a speed reducer drive shaft is inserted through the center of the outer end cap, and the speed reducer drive shaft is also inserted inside the inner ring of the cylindrical roller bearing.
[0007] Preferably, the inner ring of the outer end cap near the reducer drive shaft is fixedly connected with a rubber sealing ring to ensure airtightness, and a skeleton oil seal to prevent oil leakage is sleeved on the outside of the rubber sealing ring, and the skeleton oil seal is located inside the outer end cap.
[0008] Preferably, the eccentric ring structure includes a rotating collar, an eccentric groove, and an internal spline. The rotating collar is rotatably connected to the inside of the outer sleeve and has a clearance fit with the inside of the outer sleeve. The rotating collar has an eccentric groove inside and the internal spline is fixedly connected to one end of the rotating collar near the outer end cap. The axis of the rotating collar and the axis of the eccentric groove are eccentrically set.
[0009] Preferably, the bearing sleeve is fixedly connected inside the eccentric groove, and the outer ring of the cylindrical roller bearing is connected inside the bearing sleeve via a spline. The axes of the cylindrical roller bearing, the bearing sleeve, and the eccentric groove are on the same straight line.
[0010] Preferably, the adjusting mechanism includes an adjusting rod, an external spline shaft, a rotating plate, a rotating component, and a locking bolt. The adjusting rod axially passes through the side of the outer end cap and through the inside of the rotating collar. A support plate is fixedly connected to the inner side wall of the rotating collar near the outer end cap, and the adjusting rod passes through the inside of the support plate. The external spline shaft is fixedly connected to the end of the adjusting rod that passes through the rotating collar and engages with the internal spline. The rotating plate is fixedly connected to the end of the adjusting rod away from the external spline shaft and fits against the side of the outer end cap. The rotating component is fixedly connected to the center of the rotating plate on the side away from the adjusting rod.
[0011] Preferably, the rotating plate has several threaded holes on its side, arranged in a circular array on the side of the rotating plate, and the locking bolt passes through one of the threaded holes and is threaded to the side of the outer end cap.
[0012] The beneficial effects of the above technical solution are as follows:
[0013] The eccentric adjustment device of the continuous rolling reducer used in this coiler, through the setting of the eccentric ring structure and the adjustment mechanism, allows the adjustment mechanism to be rotated directly with the help of external tools. This, in turn, drives the eccentric ring structure to rotate, thereby adjusting the internal structure eccentrically. This achieves adjustment without disassembly, greatly shortening the adjustment time. The adjustment mechanism can drive the eccentric ring structure to perform fine adjustment of the reducer structure, improving the adjustment accuracy and making the reducer meshing effect better. Moreover, the eccentric ring structure can be dynamically adjusted without affecting the operation of the reducer. It can also promptly adjust and compensate for parts where the meshing accuracy has decreased, so as to ensure the normal and continuous operation of the production line and improve production efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall cross-sectional state of this utility model;
[0015] Figure 2 This is a schematic diagram showing the disassembled state of the outer sleeve and outer sealing end cap of this utility model;
[0016] Figure 3 This is a schematic diagram of the overall cross-sectional disassembly state of this utility model;
[0017] Figure 4 This is a schematic diagram showing the state of the present invention when the reducer drive shaft is installed;
[0018] Figure 5 This is a schematic diagram of the three-dimensional disassembled state of this utility model;
[0019] Figure 6 This is a three-dimensional explosion state diagram of the present invention.
[0020] In the diagram: 1. Outer sleeve; 2. Outer end cap; 3. Bearing sleeve; 4. Cylindrical roller bearing; 5. Gearbox drive shaft; 6. Rubber sealing ring; 7. Skeleton oil seal; 8. Rotating collar; 9. Eccentric groove; 10. Internal spline; 11. Adjusting rod; 12. External spline shaft; 13. Rotating plate; 14. Rotating component; 15. Locking bolt; 16. Support plate; 17. Threaded hole. Detailed Implementation
[0021] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 6 The embodiments are described in detail below.
[0022] This embodiment provides an eccentricity adjustment device for a continuous rolling mill reducer used in a coiler, as shown in the attached figure. Figure 1-6 As shown, the device includes an outer sleeve 1 and an outer end cap 2. The outer end cap 2 is coaxially aligned with and fixedly installed at the end of the outer sleeve 1. Two sets of bolts arranged in a ring array are threaded onto the side of the outer end cap 2. The set of bolts near the inner ring is threaded to the end of the outer sleeve 1, fixing the outer sleeve 1 and the outer end cap 2 together. The set of bolts near the outer ring can fix the outer end cap 2 to the outside of the reducer housing. A reducer drive shaft 5 passes through the center of the outer end cap 2. An eccentric ring structure is rotatably connected inside the outer sleeve 1. The eccentric ring structure includes... The device includes a rotating collar 8, an eccentric groove 9, and an internal spline 10. The rotating collar 8 is rotatably connected inside the outer sleeve 1 and has a clearance fit with the inside of the outer sleeve 1. The rotating collar 8 can rotate coaxially with the outer sleeve 1 inside the outer sleeve 1. The rotating collar 8 has an eccentric groove 9 inside and the internal spline 10 is fixedly connected to one end of the rotating collar 8 near the outer end cap 2. The axis of the rotating collar 8 is eccentrically set with the axis of the eccentric groove 9. When the rotating collar 8 rotates, it drives the internal eccentric groove 9 to rotate eccentrically, thereby driving the overall structure inside the eccentric groove 9 to produce eccentric movement.
[0023] The eccentric ring structure has an embedded bearing sleeve 3. The bearing sleeve 3 is connected to the cylindrical roller bearing 4 by a spline. The bearing sleeve 3 is fixedly connected to the inside of the eccentric groove 9, and the outer ring of the cylindrical roller bearing 4 is connected to the inside of the bearing sleeve 3 by a spline. The axes of the cylindrical roller bearing 4, the bearing sleeve 3, and the eccentric groove 9 are on the same straight line. When the rotating ring 8 rotates, the eccentric groove 9 can drive the bearing sleeve 3, the cylindrical roller bearing 4, and the reducer drive shaft 5 inside to produce radial displacement, thereby adjusting the meshing state of the reducer drive shaft 5 with other transmission mechanisms.
[0024] The reducer drive shaft 5 is also installed inside the inner ring of the cylindrical roller bearing 4. The cylindrical roller bearing 4 ensures the normal rotation of the reducer drive shaft 5 inside. The outer end cover 2 is fixedly connected to the inner ring of the reducer drive shaft 5 to ensure airtightness. The rubber seal 6 can seal the area around the reducer drive shaft 5, and at the same time, it has deformation capability to ensure that the reducer drive shaft 5 has a certain radial movement space, thereby ensuring that the eccentric wheel structure can drive the reducer drive shaft 5 to perform radial adjustment. The rubber seal 6 is fitted with a skeleton oil seal 7 to prevent oil leakage, and the skeleton oil seal 7 is located inside the outer end cover 2. The skeleton oil seal 7 can further enhance the sealing around the reducer drive shaft 5 and prevent the lubricating oil inside the reducer from leaking from the gaps.
[0025] An adjustment mechanism for driving the eccentric ring structure is installed inside the outer end cap 2, and the adjustment mechanism is connected to the eccentric ring structure in a transmission manner. The adjustment mechanism includes an adjustment rod 11, an external spline shaft 12, a rotating plate 13, a rotating component 14, and a locking bolt 15. The adjustment rod 11 is axially inserted through the side of the outer end cap 2 and inside the rotating collar 8. A support plate 16 is fixedly connected to one end of the inner wall of the rotating collar 8 near the outer end cap 2, and the adjustment rod 11 passes through the inside of the support plate 16. The adjustment rod 11 can rotate inside the outer end cap 2 and the support plate 16. The external spline shaft 12 is fixedly connected to one end of the adjusting rod 11 that passes through the rotating collar 8 and engages with the internal spline 10. A sealing gasket is fixedly connected to the middle of the adjusting rod 11 and is attached to the side of the outer end cap 2 near the outer sleeve 1, which can seal the part through which the adjusting rod 11 passes, ensuring the overall sealing performance. When the adjusting rod 11 is rotated, the external spline shaft 12 drives the internal spline 10 to rotate, thereby causing the rotating collar 8 to rotate. Through the eccentric groove 9 inside, the bearing sleeve 3 and the reducer transmission shaft will move radially.
[0026] The rotating plate 13 is fixedly connected to the end of the adjusting rod 11 away from the external spline shaft 12 and fits against the side of the outer end cover 2. The rotating part 14 is fixedly connected to the center of the rotating plate 13 away from the adjusting rod 11. The rotating part 14 can adopt an internal hexagonal nut head structure, which can be engaged and adjusted by an external internal hexagonal wrench. The adjusting rod 11 can be rotated by connecting the rotating part 14 with the corresponding tool. The rotating plate 13 has several threaded holes 17 on its side, which are arranged in a ring array on the side of the rotating plate 13. The locking bolt 15 passes through one of the threaded holes 17 and is threaded to the side of the outer end cover 2. After the reducer drive shaft 5 is adjusted to a suitable position, the locking bolt 15 is threaded through the corresponding threaded hole 17 and threaded to the outer end cover 2, which can fix the adjusting rod 11 and the external spline shaft 12. The rotating collar 8 can be kept fixed by the internal spline 10, which facilitates the fixing of the radial position of the reducer drive shaft 5 and ensures its normal and stable operation.
[0027] As another embodiment of the eccentric adjustment device for a continuous rolling mill reducer used in a coiler, the driving method of the adjusting rod 11 can be adjusted to servo motor drive, and the rotating plate 13 and rotating component 14 can be replaced with servo motor drive, so that the output shaft of the servo motor is directly connected to the adjusting rod 11 through a spline, and the servo motor is fixedly installed on the side of the outer end cover 2. This embodiment makes the adjustment of the eccentric structure more convenient and automated, without manual operation, and without the need to use locking bolts 15 and threaded holes 17 to fix the state of the adjusting rod 11. The self-locking function of the servo motor when it is not rotating can ensure the fixation of the adjusting rod 11. When the meshing state of the reducer drive shaft becomes loose, the servo motor can be controlled by the external control unit to rotate and adjust the eccentric wheel structure, and adjust the reducer drive shaft 5 to a suitable meshing state. This can also achieve adjustment without stopping the machine and without disassembly, without manual operation, and is more convenient for use when adjusting the eccentricity of the reducer drive shaft 5.
[0028] In summary, the eccentric adjustment device for the continuous rolling mill reducer used in this coiler is operated as follows:
[0029] 1. Install the eccentric adjustment device on each drive shaft of the reducer. When the corresponding drive shaft is loose, the locking bolt 15 in the corresponding adjustment mechanism can be removed and connected to the rotating part 14 with an external tool, which can drive the rotating part 14 to rotate.
[0030] 2. The adjusting rod 11 and the external spline shaft 12 are rotated by an external tool. The external spline shaft 12 drives the internal spline 10 to rotate, thereby rotating the rotating collar 8. Through the eccentric groove 9 inside, the bearing sleeve 3 and the reducer transmission shaft 5 are driven to move radially. According to the meshing condition of the reducer transmission shaft 5, the eccentric groove 9 adjusts the bearing sleeve 3 and the reducer transmission shaft 5 to a position with good meshing.
[0031] 3. Then, the rotating plate 13 is fixed to the side of the outer end cover 2 by locking bolts 15, which fixes the position of the rotating collar 8 and the reducer drive shaft 5 to ensure the stable operation of the reducer drive shaft 5.
[0032] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.
Claims
1. An eccentric adjustment device for a continuous rolling mill reducer for a coiler, comprising an outer sleeve (1) and an outer sealing end cap (2), characterized in that: The outer sleeve (1) is rotatably connected to an eccentric ring structure, and a bearing sleeve (3) is embedded inside the eccentric ring structure. A cylindrical roller bearing (4) is connected inside the bearing sleeve (3) via a spline. The outer end cap (2) is coaxially corresponding to the outer sleeve (1) and is fixedly installed at the end of the outer sleeve (1). An adjustment mechanism for driving the eccentric ring structure is provided inside the outer end cap (2), and the adjustment mechanism is connected to the eccentric ring structure in a transmission connection.
2. The eccentricity adjustment device for a continuous rolling mill reducer for a coiler according to claim 1, characterized in that: The outer end cap (2) has a speed reducer drive shaft (5) inserted through its center, and the speed reducer drive shaft (5) is also inserted inside the inner ring of the cylindrical roller bearing (4).
3. The eccentricity adjustment device for a continuous rolling mill reducer for a coiler according to claim 2, characterized in that: The outer end cap (2) is fixedly connected to the inner ring of the reducer drive shaft (5) with a rubber sealing ring (6) to ensure airtightness. The rubber sealing ring (6) is fitted with a skeleton oil seal (7) to prevent oil leakage, and the skeleton oil seal (7) is located inside the outer end cap (2).
4. The eccentricity adjustment device for a continuous rolling mill reducer for a coiler according to claim 1, characterized in that: The eccentric ring structure includes a rotating collar (8), an eccentric groove (9), and an inner spline (10). The rotating collar (8) is rotatably connected to the inside of the outer sleeve (1) and has a clearance fit with the inside of the outer sleeve (1). The rotating collar (8) has an eccentric groove (9) inside and the inner spline (10) is fixedly connected to one end of the rotating collar (8) near the outer end cap (2). The axis of the rotating collar (8) is eccentrically set with respect to the axis of the eccentric groove (9).
5. The eccentricity adjustment device for a continuous rolling mill reducer for a coiler according to claim 4, characterized in that: The bearing sleeve (3) is fixedly connected inside the eccentric groove (9), and the outer ring of the cylindrical roller bearing (4) is connected inside the bearing sleeve (3) by a spline. The axes of the cylindrical roller bearing (4), the bearing sleeve (3), and the eccentric groove (9) are on the same straight line.
6. The eccentricity adjustment device for a continuous rolling mill reducer for a coiler according to claim 4, characterized in that: The adjustment mechanism includes an adjustment rod (11), an external spline shaft (12), a rotating plate (13), a rotating component (14), and a locking bolt (15). The adjustment rod (11) is axially inserted through the side of the outer end cap (2) and through the inside of the rotating collar (8). The inner side wall of the rotating collar (8) near the outer end cap (2) is fixedly connected to a support plate (16), and the adjustment rod (11) is inserted through the support plate (16). The external spline shaft (12) is fixedly connected to the end of the adjustment rod (11) inserted through the rotating collar (8) and meshes with the internal spline (10). The rotating plate (13) is fixedly connected to the end of the adjustment rod (11) away from the external spline shaft (12) and fits against the side of the outer end cap (2). The rotating component (14) is fixedly connected to the center of the rotating plate (13) on the side away from the adjustment rod (11).
7. The eccentricity adjustment device for a continuous rolling mill reducer for a coiler according to claim 6, characterized in that: The rotating plate (13) has several threaded holes (17) on its side. The threaded holes (17) are arranged in a ring array on the side of the rotating plate (13). The locking bolt (15) passes through one of the threaded holes (17) and is threaded to the side of the outer end cap (2).