Dismounting device for clamp spring in furnace roller bearing
By designing a disassembly device for the internal retaining ring of the furnace roll bearing, and utilizing the cooperation of the threaded ring and the extension rod, the problem of difficult disassembly of the retaining ring of the furnace roll bearing in the galvanizing line of the cold rolling mill was solved, achieving efficient and non-destructive disassembly and installation of the retaining ring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-03-17
AI Technical Summary
The retaining rings of the furnace roll bearings in the cold rolling mill galvanizing line often break during disassembly, and there is a lack of retaining ring pliers of suitable specifications on the market, making manual disassembly difficult and easily damaging the retaining rings.
A disassembly device for the internal retaining ring of a furnace roller bearing was designed. By using the cooperation of a threaded ring and an extension rod, the two ends of the retaining ring are pulled closer together using a replacement shaft to reduce the size of the retaining ring. Then, it is disassembled through the extension rod and a connecting plate to avoid damaging the retaining ring.
It improves the disassembly efficiency of the retaining ring, avoids damage to the retaining ring, facilitates deep removal or installation, and solves the problem of difficult manual disassembly.
Smart Images
Figure CN223998340U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold rolling technology, and in particular to a disassembly device for the internal retaining spring of a furnace roll bearing. Background Technology
[0002] Cold rolling: Hot-rolled steel coils are used as raw materials. After pickling to remove oxide scale, they are continuously cold rolled. The finished product is hard-rolled coil. Due to the work hardening caused by continuous cold deformation, the strength and hardness of the hard-rolled coil increase and the toughness and plasticity decrease. Therefore, the stamping performance will deteriorate and it can only be used for parts with simple deformation.
[0003] During the disassembly, replacement, and maintenance of the retaining rings in the furnace roll bearings of the cold rolling mill galvanizing line, the retaining pliers used for removing the rings frequently break. Furthermore, due to the large size of the furnace roll bearing retaining rings, there are no standard retaining pliers on the market suitable for this size, and it is difficult for maintenance personnel to remove them smoothly using only their wrist strength. The work requires two or more people to pry the retaining rings apart, which greatly increases the risk of deformation and damage during the process. Utility Model Content
[0004] The purpose of this utility model is to address the aforementioned problems and shortcomings by proposing a disassembly device for the retaining spring inside a furnace roller bearing: the two ends of the threaded ring are slidably connected to the sliding holes on the outer wall of the extension rod, thereby pulling the extension rod closer together and using a replacement shaft to pull the two ends of the retaining spring closer together. After the retaining spring becomes smaller, it can be disassembled through the extension rod and the connecting plate, which facilitates disassembly and installation, avoids damage to the retaining spring, improves removal efficiency, and facilitates deep removal or installation of the retaining spring. This solves the problems of inconvenience in manually removing the retaining spring and damage to the retaining spring caused by violent removal.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A disassembly device for an internal retaining spring of a furnace roller bearing includes a connecting rod with rotating grooves at both ends. An extension rod is rotatably connected to the connecting rod within the rotating grooves. A clamping structure is provided at the center of the connecting rod, and a replacement component is provided at one end of each extension rod. A retaining spring is provided at the bottom end of the extension rod. The clamping structure includes a fixed rod, movable holes at both ends of the top outer wall of the fixed rod, a drive groove at the center of the fixed rod, and a bidirectional screw rotatably connected to the fixed rod at the center of the movable holes. The replacement component includes an insertion groove at the center of the bottom outer wall of the extension rod, a limiting cylinder welded to the bottom of the extension rod at one side of the insertion groove, and a replacement shaft slidably connected to the inner wall of the limiting cylinder.
[0007] Preferably, a tapered head is welded to the top outer wall of the replacement shaft, and the bottom outer wall of the replacement shaft is inserted into the outer walls of both ends of the retaining spring.
[0008] According to the above scheme: insert the tapered head at one end of the replacement shaft into the insertion groove at the bottom of the extension rod. The tapered head pushes the fixing rod to compress the spring. After the fixing rod retracts, the replacement shaft enters the insertion groove. Then the spring pushes the fixing rod back to position and fixes the replacement shaft in the insertion groove, which facilitates quick replacement.
[0009] Preferably, a fixed shaft is slidably connected at the center of the limiting cylinder, and a sliding disc is welded to the outer wall of the fixed shaft inside the limiting cylinder, with a spring welded to one side of the outer wall of the sliding disc.
[0010] Preferably, the outer wall of the other end of the spring contacts the inner wall of the limiting cylinder, and the end of the fixed shaft located inside the insertion groove contacts the outer wall of the bottom of the conical head and the outer wall of the replacement shaft.
[0011] Preferably, a rotating hole is provided at the center of the connecting rod, and a main shaft is rotatably connected in the rotating hole. The bottom end of the main shaft is rotatably connected to the top of the fixed rod located at the center of the drive groove. A bevel gear is installed at the bottom end of the main shaft and at the center of the outer wall of the bidirectional screw, and the bevel gears mesh with each other.
[0012] Preferably, both ends of the outer wall of the bidirectional screw are threaded with threaded rings, and the extension rod is provided with sliding holes at the threaded rings, with the outer walls of both ends of the threaded rings slidably connected in the sliding holes;
[0013] According to the above scheme: the two ends of the threaded ring are slidably connected in the sliding holes on the outer wall of the extension rod, thereby pulling the extension rod closer to each other and pulling the two ends of the retaining ring closer to each other through the replacement shaft. After the retaining ring becomes smaller, it can be disassembled through the extension rod and the connecting plate, which is convenient for disassembly and installation, avoids damage to the retaining ring, improves the removal efficiency, and facilitates deep removal or installation of the retaining ring.
[0014] Preferably, a handle is installed on the outer wall of the top end of the connecting rod, and a knob is welded to the outer wall of the top end of the main shaft, and the extension rod is slidably connected to the outer wall of the movable hole.
[0015] The beneficial effects of this utility model are as follows:
[0016] 1. The two ends of the threaded ring are slidably connected to the sliding holes on the outer wall of the extension rod, thereby pulling the extension rod closer together and pulling the two ends of the retaining ring closer together through the replacement shaft. After the retaining ring becomes smaller, the retaining ring can be disassembled through the extension rod and the connecting plate, which is convenient for disassembly and installation, avoids damage to the retaining ring, improves the removal efficiency, and facilitates deep removal or installation of the retaining ring.
[0017] 2. Insert the tapered head at one end of the replacement shaft into the insertion slot at the bottom of the extension rod. The tapered head pushes the fixing rod to compress the spring. After the fixing rod retracts, the replacement shaft enters the insertion slot. Then, the spring pushes the fixing rod back into place, fixing the replacement shaft in the insertion slot for easy and quick replacement. Attached Figure Description
[0018] Figure 1 is a schematic diagram of the overall structure of a disassembly device for an internal retaining spring of a furnace roller bearing proposed in this utility model;
[0019] Figure 2 is a partial structural schematic diagram of a disassembly device for an internal retaining spring of a furnace roller bearing proposed in this utility model;
[0020] Figure 3 is a schematic diagram of the cross-sectional structure of the fixing rod of the disassembly device for the internal retaining spring of the furnace roller bearing proposed in this utility model;
[0021] Figure 4 is a schematic diagram of the cross-sectional structure of one end of the extension rod of the disassembly device for the internal retaining spring of the furnace roller bearing proposed in this utility model.
[0022] In the diagram: 1 Connecting rod, 2 Rotating groove, 3 Extension rod, 4 Clamping structure, 5 Replacement component, 6 Snap ring, 7 Handle, 8 Fixing rod, 9 Movable hole, 10 Drive groove, 11 Rotating hole, 12 Spindle, 13 Double-acting screw, 14 Bevel gear, 15 Threaded ring, 16 Sliding hole, 17 Insertion groove.
[0023] 18 Limiting cylinder, 19 Fixed shaft, 20 Spring. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] Example 1:
[0026] Referring to Figures 1-3, a disassembly device for a retaining spring inside a furnace roller bearing includes a connecting rod 1. Rotating grooves 2 are provided at both ends of the connecting rod 1. An extension rod 3 is rotatably connected to the connecting rod 1 within the rotating grooves 2. A clamping structure 4 is provided at the center of the connecting rod 1. A replacement component 5 is provided at one end of each extension rod 3. A retaining spring 6 is provided at the bottom end of the extension rod 3. A bevel gear 14 rotates, causing a bidirectional screw 13 to rotate, bringing the threaded rings 15 on the outer walls of both ends of the bidirectional screw 13 closer together. This, in turn, pulls the extension rod 3 closer together, causing the two ends of the retaining spring 6 to pull closer together. After the retaining spring 6 becomes smaller, it can be disassembled via the extension rod 3 and the connecting plate 1.
[0027] The clamping structure 4 includes a fixed rod 8, movable holes 9 at both ends of the top outer wall of the fixed rod 8, a drive groove 10 at the center of the fixed rod 8, and a rotatably connected to the fixed rod 8.
[0028] The bidirectional screw 13 is located at the center of the movable hole 9. The main shaft 12 in the fixed rod 8 drives the bidirectional screw 13 through the bevel gear 14. After the bidirectional screw 13 rotates, it drives the threaded ring 15 to move closer or further away from each other on the outer walls at both ends of the bidirectional screw 13. The threaded ring 15 is slidably connected in the sliding hole 16 of the extension rod 3, so that the extension rods 3 move closer or further away from each other, which is convenient for adjusting the spacing, for clamping the snap ring 6, and for removing the snap ring 6.
[0029] A rotating hole 11 is provided at the center of the connecting rod 1, and a main shaft 12 is rotatably connected in the rotating hole 11. The bottom end of the main shaft 12 is rotatably connected to the top of the fixed rod 8 at the center of the drive groove 10. A bevel gear 14 is installed at the bottom end of the main shaft 12 and at the center of the outer wall of the bidirectional screw 13. The bevel gears 14 mesh with each other. The main shaft 12 on the connecting rod 1 is driven by a knob or by a motor, which facilitates the movement of the replacement shaft on the extension rod 3 closer or further apart, and facilitates the removal or installation of the retaining ring.
[0030] Both ends of the outer wall of the bidirectional screw 13 are threaded with threaded rings 15. The extension rod 3 has a sliding hole 16 at the threaded ring 15. The outer walls of both ends of the threaded ring 15 are slidably connected in the sliding hole 16. The threaded ring 15 inside the sliding hole 16 in the extension rod 3 slides as the extension rod 3 moves closer or further away, which facilitates movement.
[0031] A handle 7 is installed on the top outer wall of the connecting rod 1, a knob is welded to the top outer wall of the main shaft 12, and the extension rod 3 is slidably connected to the outer wall of the movable hole 9.
[0032] Example 2:
[0033] Refer to Figure 1 and Figure 4 The replacement component 5 includes an insertion groove 17 located at the center of the outer wall at the bottom of the extension rod 3, a limiting cylinder 18 welded to the bottom of the outer wall of the extension rod 3 on one side of the insertion groove 17, and a replacement shaft slidably connected to the inner wall of the limiting cylinder 18. When the tapered head at one end of the replacement shaft is inserted into the insertion groove 17 at the bottom of the extension rod 3, the spring 20 pushes the fixed shaft 19 back into place.
[0034] The replacement shaft is fixed in the insertion slot 17;
[0035] A tapered head is welded to the top outer wall of the replacement shaft, and the bottom outer wall of the replacement shaft is inserted into the outer walls of both ends of the retaining ring 6;
[0036] A fixed shaft 19 is slidably connected at the center of the limiting cylinder 18. A sliding disc is welded to the outer wall of the fixed shaft 19 inside the limiting cylinder 18. A spring 20 is welded to one side of the outer wall of the sliding disc.
[0037] The outer wall of the other end of the spring 20 contacts the inner wall of the limiting cylinder 18. One end of the fixed shaft 19 located inside the insertion groove 17 contacts the outer wall of the bottom of the conical head and the outer wall of the replacement shaft. When the replacement shaft needs to be replaced, the fixed shaft 19 is manually pulled outward. The fixed shaft 19 compresses the spring 20 and contracts in the insertion groove 17. At this time, the conical head of the replacement shaft loses its limit and can be removed for replacement, which is convenient for use and quick replacement.
[0038] Working principle: In use, insert the tapered head at one end of the replacement shaft into the insertion groove 17 at the bottom of the extension rod 3. The tapered head pushes the fixed shaft 19 to compress the spring 20. After the fixed shaft 19 retracts, the replacement shaft enters the insertion groove 17. Then, the spring 20 pushes the fixed shaft 19 back into place, fixing the replacement shaft in the insertion groove 17. Hold the handle 7 or connecting rod 1 to lower the replacement shaft at one end of the extension rod 3 to the retaining ring 6. Insert the replacement shaft into both ends of the retaining ring 6. Rotate the knob at one end of the main shaft 12 on the connecting rod 1. The main shaft 12 drives the bevel gear 14 of the bidirectional screw 13 in the drive groove 10 through the bevel gear 14. The rotation of the bevel gear 14 drives the bidirectional screw 13 to rotate, causing the threaded rings 15 on the outer walls of both ends of the bidirectional screw 13 to move closer to each other. The two ends of the threaded rings 15 are slidably connected in the sliding holes 16 on the outer wall of the extension rod 3, thereby pulling the extension rod 3. By bringing the two ends of the retaining ring 6 closer together and replacing the shaft, the retaining ring 6 can be disassembled through the extension rod 3 and the connecting plate 1 after it becomes smaller.
[0039] The exemplary embodiments of this utility model are described in detail below with reference to examples; however,
[0040] It will be understood by those skilled in the art that various modifications and alterations can be made to the above-described specific embodiments without departing from the concept of this utility model, and various combinations can be made to the various technical features and structures proposed by this utility model without exceeding the protection scope of this utility model, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of this utility model is not intended to limit this utility model to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of this utility model and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of this utility model, as well as various different choices and modifications. The scope of this utility model is intended to be defined by the claims and their equivalents.
Claims
1. A device for removing an inner snap spring of a furnace roller bearing, comprising a connecting rod (1), characterized in that, Both ends of the connecting rod (1) are provided with rotating grooves (2), and the connecting rod (1) is rotatably connected with the extension rod (3) in the rotating groove (2), the center of the connecting rod (1) is provided with a clamping structure (4), and one end of the extension rod (3) is provided with a replacement assembly (5), the bottom end of the extension rod (3) is provided with a snap spring (6). The clamping structure (4) comprises a fixed rod (8), a movable hole (9) formed at the top of the outer wall of the fixed rod (8), a driving groove (10) formed at the center of the fixed rod (8), and a bidirectional screw (13) rotatably connected to the fixed rod (8) at the center of the movable hole (9). The replacement assembly (5) comprises a plug-in groove (17) formed at the center of the outer wall of the bottom end of the extension rod (3), a limiting cylinder (18) welded to the outer wall of the bottom of the extension rod (3) on one side of the plug-in groove (17), and a replacement shaft slidably connected to the inner wall of the limiting cylinder (18).
2. A device for removing an inner snap spring of a furnace roller bearing according to claim 1, characterized in that The top end of the replacement shaft is welded with a conical head, and the bottom end of the replacement shaft is inserted into the outer wall of the two ends of the snap spring (6).
3. A device for removing an inner snap spring of a furnace roller bearing according to claim 1, characterized in that The center of the limiting cylinder (18) is slidably connected with a fixed shaft (19), and the outer wall of the fixed shaft (19) is welded with a sliding disc inside the limiting cylinder (18), and the outer wall of one side of the sliding disc is welded with a spring (20).
4. A device for removing an inner snap spring of a furnace roller bearing according to claim 3, characterized in that The other end of the spring (20) is in contact with the inner wall of the limiting cylinder (18), and one end of the fixed shaft (19) inside the plug-in groove (17) is in contact with the outer wall of the bottom of the conical head and the outer wall of the replacement shaft.
5. A device for removing an inner snap spring of a furnace roller bearing according to claim 1, characterized in that The center of the connecting rod (1) is provided with a rotating hole (11), and the rotating hole (11) is rotatably connected with a main shaft (12), the bottom end of the main shaft (12) is rotatably connected to the top end of the fixed rod (8) at the center of the driving groove (10), the bottom end of the main shaft (12) and the outer wall of the bidirectional screw (13) are both provided with bevel gears (14), and the bevel gears (14) are meshed with each other.
6. A device for removing an inner snap spring of a furnace roller bearing according to claim 1, characterized in that The outer wall of the bidirectional screw (13) is threadedly connected with a threaded ring (15), and the extension rod (3) is provided with a sliding hole (16) at the threaded ring (15), and the outer wall of the two ends of the threaded ring (15) is slidably connected in the sliding hole (16).
7. A device for removing an inner snap spring of a furnace roller bearing according to claim 1, characterized in that The top end of the connecting rod (1) is provided with a handle (7), and the top end of the main shaft (12) is welded with a knob, and the extension rod (3) is slidably connected to the outer wall of the movable hole (9).