Rotatable wear-resistant bushing for a tension roller

Abstract

The utility model discloses a rotatable wear -resisting bushing for tension roller, including bushing and tension roller, bushing both ends fixed mounting has mounting seat, the both ends of tension roller are equipped with two sets of clamping plates, two sets clamping plate correspond respectively with a set of mounting seat setting, the rotating installation of mounting ring is equipped in mounting seat, the inside of mounting ring is sleeved and has the gear ring, be equipped with a plurality of groups of locating plate of annular distribution in mounting seat, two sets clamping plate distribution in both sides of a plurality of locating plate, a plurality of locating plate all are connected with mounting seat rotation through mounting rod, a plurality of mounting rod all are sleeved with first gear, through setting the mounting seat with rotating mounting ring and linkage locating plate in both ends of bushing, cooperate clamping plate group of tension roller end, realized the quick, tool -free dismounting of bushing on tension roller.

Description

Technical Field

[0001] This utility model relates to the field of tension roller technology, specifically a rotatable wear-resistant bushing for tension rollers. Background Technology

[0002] In machinery handling strips, wires, or coils, tension rollers are widely used and critical components. Their operational stability directly affects product quality and production efficiency. Tension rollers are typically connected and bear loads from a fixed support structure (such as a bearing housing) via a bushing mounted on the shaft end. Traditional bushings are mostly fixed designs, integrally bonded to the tension roller body or mounting shaft through interference fits, key connections, or adhesive bonding.

[0003] In existing technologies, when bushings experience severe wear during use, it is often necessary to disassemble the entire tension roller assembly from the equipment. This is not only cumbersome, time-consuming, and labor-intensive, but also requires removing the worn bushing from the roller body or journal, which usually necessitates destructive removal or precision machining. Installing a new bushing may require remachining of the mating surfaces or hot fitting. This process leads to prolonged equipment downtime, resulting in high maintenance costs. Furthermore, it necessitates replacing or repairing the more valuable tension roller body itself, causing a significant waste of spare parts. Utility Model Content

[0004] The purpose of this invention is to provide a rotatable wear-resistant bushing for tension rollers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotatable wear-resistant bushing for a tension roller, comprising a bushing and a tension roller. Mounting seats are fixedly installed at both ends of the bushing. Two sets of clamping plates are provided at both ends of the tension roller, each set corresponding to one mounting seat. An mounting ring is rotatably installed within the mounting seat, and a toothed ring is fitted onto the mounting ring. Multiple sets of annularly distributed positioning plates are provided within the mounting seat. Two sets of clamping plates are distributed on both sides of the multiple sets of positioning plates. The multiple sets of positioning plates are rotatably connected to the mounting seat via mounting rods. A first gear is fitted onto each of the multiple sets of mounting rods, which are annularly distributed around the mounting ring. The multiple sets of first gears are meshed with the toothed ring.

[0006] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed stop wheels are sleeved on the mounting rod on the right side, and two sets of stop claws are provided in the mounting base. The two sets of stop claws are respectively arranged corresponding to the two sets of stop wheels, and the two sets of stop claws are respectively engaged with the corresponding stop wheels.

[0007] As a further preferred embodiment of this technical solution, both sets of stop claws are rotatably connected to the mounting base via mounting shafts, and both sets of mounting shafts are fitted with torsion springs. The two ends of the torsion springs are fixedly connected to the stop claws and the mounting base, respectively, and both sets of mounting shafts are fitted with second gears.

[0008] As a further preferred embodiment of this technical solution, two sets of racks are slidably installed in the mounting base, and the two sets of racks are respectively configured to correspond to two sets of second gears, and the racks are meshed with the corresponding second gears.

[0009] As a further preferred embodiment of this technical solution, a connecting frame is slidably installed inside the mounting base. The two ends of the connecting frame are respectively fixedly connected to two sets of racks. A pull rod is fixedly installed on the connecting frame. The pull rod passes through the mounting base and is slidably connected to the mounting base. Two sets of sliding rods are fixedly installed inside the mounting base.

[0010] As a further preferred embodiment of this technical solution, the connecting frame is slidably sleeved with two sets of sliding rods, and each set of sliding rods is sleeved with a spring, the two ends of which are fixedly connected to the connecting frame and the mounting base, respectively.

[0011] This utility model provides a rotatable wear-resistant bushing for tension rollers, which has the following advantages:

[0012] (1) This utility model achieves quick and tool-free installation and removal of the bushing on the tension roller by setting mounting seats with rotating mounting rings and linkage positioning plates at both ends of the bushing and cooperating with the clamping plate group at the end of the tension roller. The positioning plate can be synchronously rotated into or out of the clamping plate through the linkage of the first gear and the gear ring. Combined with the spring self-locking anti-loosening mechanism of the stop pawl and the stop wheel, the bushing is securely installed during operation. At the same time, the replacement operation is greatly simplified. The bushing can be replaced without destructive removal or precision machining, which significantly reduces the downtime of equipment maintenance and greatly reduces maintenance costs and labor intensity.

[0013] (2) This utility model, through the engagement mechanism of the stop pawl and the stop wheel, can effectively lock the position of the mounting rod when the bushing is working normally, thereby firmly constraining the locking state of the positioning plate and the clamping plate, fundamentally preventing the risk of the bushing accidentally loosening during equipment operation vibration or stress. When the bushing needs to be replaced, it is only necessary to operate the pull rod to drive the connecting frame to slide, which can release the engagement and locking of the stop pawl on the stop wheel in a coordinated manner, instantly releasing the constraint on the mounting rod. At this time, multiple positioning plates can flexibly and synchronously rotate away from the clamping plate at the end of the tension roller, so that the worn bushing can be removed extremely conveniently and completely, and the whole process does not require any destructive operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the structural separation of the bushing and mounting base of this utility model;

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A;

[0017] Figure 4 This is a schematic diagram showing the separation of the mounting rod and the stop wheel in this utility model;

[0018] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point -B;

[0019] In the diagram: 1. Bushing; 2. Tension roller; 3. Mounting seat; 4. Clamping plate; 5. Mounting ring; 6. Gear ring; 7. Positioning plate; 8. Mounting rod; 9. First gear; 10. Stop wheel; 11. Stop pawl; 12. Mounting shaft; 13. Torsion spring; 14. Second gear; 15. Rack; 16. Connecting frame; 17. Pull rod; 18. Slide rod; 19. Spring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3As shown in this embodiment, a rotatable wear-resistant bushing for a tension roller includes a bushing 1 and a tension roller 2. The bushing 1 has mounting seats 3 fixedly installed at both ends. The tension roller 2 has two sets of clamping plates 4 at both ends, each set corresponding to a mounting seat 3. A mounting ring 5 is rotatably installed inside the mounting seat 3, and a toothed ring 6 is fitted onto the mounting ring 5. The mounting seat 3 has multiple sets of annularly distributed positioning plates 7. Two sets of clamping plates 4 are distributed on both sides of the multiple sets of positioning plates 7. The multiple sets of positioning plates 7 are rotatably connected to the mounting seat 3 via mounting rods 8. First gears 9 are fitted onto the multiple sets of mounting rods 8, which are annularly distributed around the mounting ring 5. The multiple sets of first gears 9 are meshed with the toothed ring 6. During installation, the mounting seats 3 at both ends of the bushing 1 are aligned with the two sets of clamping plates 4 at the ends of the tension roller 2. Rotating a set of mounting rods 8 drives the first gear 9 and the positioning plate 7 to rotate. This, in turn, causes the gear ring 6 on the mounting ring 5 to drive multiple sets of first gears 9 to rotate synchronously. This, in turn, drives multiple sets of mounting rods 8 and the positioning plates 7 fixed to the rods to rotate synchronously. After the positioning plate 7 rotates to a specific angle, its edge embeds between the corresponding two sets of clamping plates 4, forming circumferential and axial constraints, thus firmly installing the bushing 1 onto the tension roller 2. At this time, under the action of the torsion spring 1913, the stop pawl 11 automatically engages with the stop wheel 10 on the mounting rod 8, locking the position of the mounting rod 8 and the positioning plate 7, preventing them from accidentally rotating and loosening under equipment vibration or stress.

[0022] like Figure 4 and Figure 5As shown, two sets of symmetrically distributed stop wheels 10 are sleeved on the right mounting rod 8. Two sets of stop claws 11 are provided inside the mounting base 3, each set corresponding to one of the two sets of stop wheels 10. The two sets of stop claws 11 are meshed with their respective stop wheels 10. Both sets of stop claws 11 are rotatably connected to the mounting base 3 via mounting shafts 12. Torsion springs 1913 are sleeved on both mounting shafts 12, with both ends of the torsion springs 1913 fixedly connected to the stop claws 11 and the mounting base 3, respectively. Second gears 14 are sleeved on both mounting shafts 12. Two sets of racks 15 are slidably installed inside the mounting base 3. Each of the two sets of second gears 14 is respectively set and meshed with the corresponding second gear 14. A connecting frame 16 is slidably installed in the mounting base 3. The two ends of the connecting frame 16 are respectively fixedly connected to the two sets of racks 15. A pull rod 17 is fixedly installed on the connecting frame 16. The pull rod 17 passes through the mounting base 3 and is slidably connected to the mounting base 3. Two sets of slide rods 18 are fixedly installed in the mounting base 3. The connecting frame 16 is slidably sleeved with the two sets of slide rods 18 respectively. A spring 19 is sleeved on each of the two sets of slide rods 18. The two ends of the spring 19 are respectively fixedly connected to the connecting frame 16 and the mounting base 3. When disassembling, the operator pulls the pull rod 17 outward. Pull rod 17 drives connecting frame 16 and two sets of racks 15 fixed at both ends to slide along slide rod 18, compressing spring 19. The movement of rack 15 drives the second gear 14 meshing with it to rotate. The second gear 14 drives mounting shaft 12 and stop pawl 11 fixed on it to rotate, so that stop pawl 11 overcomes the force of torsion spring 1913 and disengages from stop wheel 10, releasing the lock on mounting rod 8. At this time, mounting rod 8 and positioning plate 7 can rotate freely. Rotating mounting rod 8 again will drive all positioning plates 7 to rotate synchronously, so that their edges are released from the constraint of end clamping plate 4 of tension roller 2, thereby making it easy to remove the worn bushing 1 as a whole for replacement.

[0023] This utility model provides a rotatable wear-resistant bushing for a tension roller. The specific working principle is as follows: During installation, the mounting seats 3 at both ends of the bushing 1 are aligned with the two sets of clamping plates 4 at the ends of the tension roller 2. Rotating a set of mounting rods 8 drives the first gear 9 and the positioning plate 7 to rotate. This, in conjunction with the toothed ring 6 on the mounting ring 5, drives multiple sets of first gears 9 to rotate synchronously, thereby driving multiple sets of mounting rods 8 and the positioning plates 7 fixed on the rods to rotate synchronously. After the positioning plate 7 rotates to a specific angle, its edge embeds between the corresponding two sets of clamping plates 4, forming circumferential and axial constraints, thus firmly installing the bushing 1 on the tension roller 2. At this time, under the action of the torsion spring 1913, the stop pawl 11 automatically engages with the stop wheel 10 on the mounting rod 8, locking the position of the mounting rod 8 and the positioning plate 7, preventing them from accidentally rotating and loosening under equipment vibration or force. For disassembly, the operator pulls the pull rod 17 outwards. Pull rod 17 drives connecting frame 16 and two sets of racks 15 fixed at both ends to slide along slide rod 18, compressing spring 19. The movement of rack 15 drives the second gear 14 meshing with it to rotate. The second gear 14 drives mounting shaft 12 and stop pawl 11 fixed on it to rotate, so that stop pawl 11 overcomes the force of torsion spring 1913 and disengages from stop wheel 10, releasing the lock on mounting rod 8. At this time, mounting rod 8 and positioning plate 7 can rotate freely. Rotating mounting rod 8 again will drive all positioning plates 7 to rotate synchronously, so that their edges are released from the constraint of end clamping plate 4 of tension roller 2, thereby making it easy to remove the worn bushing 1 as a whole for replacement.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable wear-resistant bushing for a tension roller, comprising a bushing (1) and a tension roller (2), characterized in that: The bushing (1) is fixedly mounted with mounting bases (3) at both ends. The tension roller (2) is provided with two sets of clamping plates (4) at both ends. The two sets of clamping plates (4) are respectively set with a set of mounting bases (3). The mounting base (3) is rotatably mounted with a mounting ring (5). The mounting ring (5) is sleeved with a toothed ring (6). The mounting base (3) is provided with multiple sets of annularly distributed positioning plates (7). The two sets of clamping plates (4) are distributed on both sides of the multiple sets of positioning plates (7). The multiple sets of positioning plates (7) are rotatably connected to the mounting base (3) through mounting rods (8). The multiple sets of mounting rods (8) are sleeved with first gears (9). The multiple sets of mounting rods (8) are annularly distributed around the mounting ring (5). The multiple sets of first gears (9) are meshed with the toothed rings (6).

2. The rotatable wear-resistant bushing for a tension roller according to claim 1, characterized in that: Two sets of symmetrically distributed stop wheels (10) are sleeved on the mounting rod (8) on the right side. Two sets of stop claws (11) are provided in the mounting base (3). The two sets of stop claws (11) are respectively set with the two sets of stop wheels (10), and the two sets of stop claws (11) are respectively engaged with the corresponding stop wheels (10).

3. The rotatable wear-resistant bushing for a tension roller according to claim 2, characterized in that: Both sets of stop claws (11) are rotatably connected to the mounting base (3) via mounting shafts (12). Both sets of mounting shafts (12) are fitted with torsion springs (13). The two ends of the torsion springs (13) are fixedly connected to the stop claws (11) and the mounting base (3) respectively. Both sets of mounting shafts (12) are fitted with second gears (14).

4. The rotatable wear-resistant bushing for a tension roller according to claim 1, characterized in that: Two sets of racks (15) are slidably installed in the mounting base (3). The two sets of racks (15) are respectively set with two sets of second gears (14), and the racks (15) are meshed with the corresponding second gears (14).

5. A rotatable wear-resistant bushing for a tension roller according to claim 1, characterized in that: A connecting frame (16) is slidably installed inside the mounting base (3). The two ends of the connecting frame (16) are fixedly connected to two sets of racks (15) respectively. A pull rod (17) is fixedly installed on the connecting frame (16). The pull rod (17) passes through the mounting base (3) and is slidably connected to the mounting base (3). Two sets of sliding rods (18) are fixedly installed inside the mounting base (3).

6. A rotatable wear-resistant bushing for a tension roller according to claim 5, characterized in that: The connecting frame (16) is slidably sleeved with two sets of sliding rods (18), and springs (19) are sleeved on both sets of sliding rods (18). The two ends of the springs (19) are fixedly connected to the connecting frame (16) and the mounting base (3) respectively.

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