A bearing bush trimming tool

Abstract

This utility model relates to the field of bearing repair technology, and in particular to a bearing repair fixture. The bearing repair fixture includes: a cylinder, two side discs, an outer wall rubber ring, handles at both ends, and an outer wall Velcro strap. A disassembly / assembly assembly is installed inside the cylinder, and an anti-scratch assembly is installed inside the discs. The disassembly / assembly assembly consists of a push plate, a push rod, a first locking block, and a compression spring. In conjunction with the support plate on the inner wall of the Velcro strap and the second locking block, the Velcro strap can be quickly disassembled / assembled by pressing the push rod, facilitating the replacement of worn or contaminated scouring pads, significantly improving work efficiency and ensuring connection stability. The anti-scratch assembly includes a toothed disc, a collar, a mounting disc, toothed claws, and a torque spring, forming a unidirectional rotation mechanism. This ensures that the clockwise rotation direction of the cylinder is consistent with the mechanical running marks of the bearing, avoiding repair errors caused by counterclockwise rotation due to misoperation, and ensuring the accuracy of bearing repair. The bearing repair fixture provided by this utility model has the advantages of convenient Velcro strap replacement and reduced risk of errors.

Description

Technical Field

[0001] This utility model relates to the field of bearing repair technology, and in particular to a bearing repair tool. Background Technology

[0002] With the continuous development and widespread application of marine low-speed diesel engines, customers have increasingly higher requirements for the performance, quality, and appearance of diesel engines.

[0003] Currently, the market for large marine low-speed diesel engines mainly manufactures and uses main engines from two patented manufacturers: MAN and WINGD. Regardless of the main engine, bearings, as the transition between the main moving parts, are of great concern to customers regarding their wear after operation. Currently, the post-inspection bearing repair and grinding process is hampered by varying operator skill levels and numerous uncertainties during actual operation. It is difficult to ensure that the grinding is performed exactly in the direction of the machine's normal break-in marks, and it requires waiting for professional personnel, which is time-consuming and labor-intensive. This falls far short of meeting the time constraints and appearance requirements for bearing repair during inspections. If the bearing's appearance is unsatisfactory during nighttime inspections, professional technicians are usually required to repair or replace it with a spare bearing to ensure successful delivery the next day. This method easily leads to a waste of time, manpower, and material resources.

[0004] Therefore, it is necessary to provide a new bearing bush dressing tool to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a bearing bush trimming tool.

[0006] The bearing trimming fixture provided by this utility model includes: a cylinder, with a disc fixedly connected to both sides of the cylinder, rubber rings symmetrically installed on the outer wall of the cylinder, handles fixedly connected to both ends of the cylinder, Velcro fitted on the outer wall of the cylinder, a disassembly and assembly component for disassembling and assembling the Velcro installed inside the cylinder, and a scratch-resistant component for controlling the unidirectional rotation of the disc installed inside the disc.

[0007] Preferably, the disassembly and assembly components include: a push plate, a push rod, a first locking block, and a compression spring. The push plate is slidably connected to the axis of the cylinder, and the push rod is fixedly connected to the axis on one side of the push plate. Multiple sets of first locking blocks are symmetrically slidably connected inside the cylinder on one side of the push plate. One end of each first locking block is fixedly connected to a compression spring, and one end of each compression spring is fixed to the inner wall of the cylinder.

[0008] Preferably, the inner wall of the Velcro is symmetrically fixedly connected with multiple sets of support plates, and the inner side of each set of support plates is fixedly connected with a second locking block, and the first locking block engages with the second locking block.

[0009] Preferably, the anti-scratch component includes: a toothed disc, a collar, a mounting plate, a toothed claw, and a torque spring. The toothed disc is fixedly connected to the inner wall of the disc, the collar is rotatably connected to the outer wall of the handle, the mounting plate is rotatably connected to one side of the collar, the toothed claw is rotatably connected to the bottom of the mounting plate, the toothed claw engages with the inner wall of the toothed collar, and the torque spring is fixedly connected to the inner wall of the toothed claw. One end of the torque spring is fixedly connected to the mounting plate.

[0010] Preferably, one end of the push rod passes through and extends out of the handle near the push rod.

[0011] Preferably, the mounting plate is a circular design, with its inner wall diameter being larger than the outer wall diameter of the handle.

[0012] Preferably, the outer walls of both the handle and the collar are fitted with anti-slip textures.

[0013] Preferably, the inner wall of the toothed ring has multiple sets of tooth grooves, which engage with toothed claws, allowing the toothed claws to drive the toothed ring to rotate counterclockwise in one direction.

[0014] Compared with related technologies, the bearing bush dressing fixture provided by this utility model has the following beneficial effects:

[0015] Easy to replace Velcro:

[0016] The fixture's built-in assembly and disassembly components utilize a combination of a push plate, push rod, first locking block, and compression spring. Combined with the support plate on the inner wall of the Velcro and the second locking block, this enables quick assembly and disassembly of the Velcro. In actual use, simply pressing the push rod releases the locking mechanism between the first and second locking blocks, facilitating the removal of the old Velcro and the installation of the new one. Compared to traditional fastening methods, this design significantly reduces Velcro replacement time, making it particularly suitable for scenarios requiring frequent Velcro changes and dramatically improving work efficiency. Simultaneously, the stable locking structure ensures that the Velcro will not easily detach during use, guaranteeing the continuity and reliability of the repair work.

[0017] Reduce the risk of errors:

[0018] The anti-scratch assembly, consisting of a toothed disc, collar, mounting plate, toothed claw, and torque spring, works together to form a reliable unidirectional rotation mechanism. During bearing dressing, the operator holds the collar and rotates it clockwise. The engagement of the toothed claw with the toothed disc precisely drives the cylinder to rotate, allowing the scouring pad to dress along the circumference of the bearing, ensuring that the cylinder's rotation direction always aligns with the direction of the bearing's mechanical running marks. When a clockwise rotation tendency occurs, the toothed claw disengages from the tooth groove, and the toothed disc compresses the toothed claw, compressing the torque spring and preventing the cylinder from rotating in the opposite direction. This effectively avoids incorrect dressing direction due to misoperation, thus ensuring the accuracy and quality of bearing dressing. This precise and controllable operation method not only lowers the technical threshold for operators but also reduces the risk of bearing damage caused by improper operation. Attached Figure Description

[0019] Figure 1 A schematic diagram of the bearing trimming fixture provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows a cross-sectional structure of the Velcro strap.

[0021] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the disk shown;

[0022] Figure 4 for Figure 3 The diagram shows the structure of the toothed disc;

[0023] Figure 5 for Figure 4 The diagram shows the structure of the installation disk.

[0024] The following are the labels in the diagram: 1. Cylinder; 2. Disc; 3. Rubber ring; 4. Handle; 5. Velcro; 6. Push plate; 7. Push rod; 8. First locking block; 9. Compression spring; 10. Support plate; 11. Second locking block; 12. Gear disc; 13. Collar; 14. Mounting plate; 15. Toothed claw; 16. Torque spring; 17. Tooth groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 5A bearing bush trimming fixture includes: a cylinder 1, with discs 2 fixedly connected to both sides of the cylinder 1; rubber rings 3 symmetrically installed near the outer wall of the cylinder 1; handles 4 fixedly connected to both ends of the cylinder 1; Velcro 5 fitted onto the outer wall of the cylinder 1; a disassembly / removal assembly for the Velcro 5 installed inside the cylinder 1; and a scratch-resistant assembly for controlling the unidirectional rotation of the discs 2 installed inside the discs 2. The disassembly / removal assembly includes: a push plate 6, a push rod 7, a first locking block 8, and a compression spring 9. A sliding connection is established at the axis of the cylinder 1. A push plate 6 is connected, and a push rod 7 is fixedly connected to the axis on one side of the push plate 6. Multiple sets of first locking blocks 8 are symmetrically slidably connected inside the cylinder 1 on one side of the push plate 6. A compression spring 9 is fixedly connected to one end of each first locking block 8. One end of each compression spring 9 is fixed to the inner wall of the cylinder 1. Multiple sets of support plates 10 are symmetrically fixedly connected to the inner wall of the Velcro 5. A second locking block 11 is fixedly connected to the inner side of each set of support plates 10. The first locking block 8 and the second locking block 11 are engaged. One end of the push rod 7 passes through and extends out to the handle 4 near the push rod 7.

[0028] It should be noted that the rubber ring 3 plays a buffering and positioning role during operation, reducing hard friction between the tooling and the bearing, protecting the bearing surface from additional damage, and at the same time helping to improve the uniformity of the dressing effect.

[0029] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 The anti-scratch component includes: a toothed disc 12, a collar 13, a mounting plate 14, a toothed claw 15, and a torque spring 16. The toothed disc 12 is fixedly connected to the inner wall of the disc 2. The collar 13 is rotatably connected to the outer wall of the handle 4. The mounting plate 14 is rotatably connected to one side of the collar 13. The toothed claw 15 is rotatably connected to the bottom of the mounting plate 14. The toothed claw 15 is engaged with the inner wall of the toothed ring. The torque spring 16 is fixedly connected to the inner wall of the toothed claw 15. One end of the torque spring 16 is fixedly connected to the mounting plate 14. The mounting plate 14 is a circular design with an inner wall diameter larger than the outer wall diameter of the handle 4. The outer walls of the handle 4 and the collar 13 are both equipped with anti-slip textures. The inner wall of the toothed ring has multiple sets of tooth grooves 17, which are engaged with the toothed claw 15. The toothed claw 15 can drive the toothed ring to rotate counterclockwise in one direction.

[0030] It should be noted that the anti-slip texture on the outer wall of the handle 4 and the collar 13 fully considers the operator's grip comfort and stability. Even during long-term operation or when hands are wet, it can effectively prevent the tool from slipping out of the hand, thus improving operational safety.

[0031] The working principle of the bearing trimming fixture provided by this utility model is as follows:

[0032] Velcro 5: Installation and Removal

[0033] The tooling assembly consists of a push plate 6, a push rod 7, a first locking block 8, and a compression spring 9. The inner wall of the Velcro 5 is equipped with a support plate 10 and a second locking block 11. Through the coordinated action of these components, the Velcro 5 can be quickly replaced. When the Velcro 5 needs to be replaced, the operator presses the push rod 7, which extends through and extends the handle 4. The push rod 7 then drives the push plate 6, located at the axis of the cylinder 1, to move synchronously. During the movement, the push plate 6 presses against multiple sets of first locking blocks 8 that are symmetrically slidably connected inside the cylinder 1. This causes the first locking blocks 8 to gradually overcome the elastic force of the compression spring 9 and move away from the second locking blocks 11. When the first locking block 8 and the second locking block 11 are completely disengaged, the locking relationship between them is released. At this time, the operator can easily pull the Velcro 5 to remove the Velcro 5 with the second locking block 11 on the inner wall from the inside of the cylinder 1. When installing the new Velcro 5, insert the second locking block 11 on the inner wall of the new Velcro 5 into the cylinder 1, and then release the push rod 7. The compressed spring 9 is reset, pushing the first locking block 8 to approach the second locking block 11 again until the first locking block 8 and the second locking block 11 are locked again, thus completing the secure installation of the Velcro 5.

[0034] Bearing overhaul:

[0035] The bearing overhaul process mainly relies on the design of anti-scratch components and the overall structure to achieve precise and efficient overhaul operations. Before overhauling the bearing, the operator first fixes the bearing and then attaches the scouring pad to the Velcro 5. The design of this tooling makes the counterclockwise rotation direction of the cylinder 1 consistent with the direction of the mechanical running marks of the bearing, laying the foundation for subsequent overhaul operations.

[0036] When the bearing needs to be repaired, the operator holds the collar 13 with both hands. Since both the handle 4 and the outer wall of the collar 13 are provided with anti-slip texture, the stability of the grip can be ensured. The operator rotates the collar 13 counterclockwise. The collar 13 drives the toothed claw 15 connected to the bottom through the mounting plate 14 connected to one side. At this time, the toothed claw 15 engages with the inner wall of the toothed disc 12 fixed to the inner wall of the disc 2. The rotational force of the collar 13 is transmitted to the cylinder 1 through the engagement between the toothed claw 15 and the toothed disc 12, thereby driving the cylinder 1 to rotate, so that the scouring pad attached to the Velcro 5 can repair the bearing.

[0037] To prevent the cylinder 1 from rotating clockwise due to misoperation during the finishing process, which would cause its rotation direction to be inconsistent with the direction of the mechanical running marks on the bearing, the tooling is equipped with a one-way rotation mechanism. When the collar 13 rotates clockwise, the inner wall of the gear disc 12 will squeeze the toothed pawl 15. The toothed pawl 15 is compressed by the torque spring 16 fixed on the inner wall, causing the toothed pawl 15 to disengage from the gear disc 12. The toothed pawl 15 can then rotate relative to the gear disc 12. After the toothed pawl 15 has rotated a certain angle, the gear disc 12 no longer squeezes the toothed pawl 15, and the toothed pawl 15 is reset by the torque spring 16. The new tooth 12 engages with another tooth groove 17 of the toothed disc 12. At this time, the toothed disc 12 cannot drive the cylinder 1 to rotate, thus ensuring that the cylinder 1 always rotates in the counterclockwise direction, ensuring the accuracy and consistency of the bearing trimming. At the same time, the diameter of the disc 2 is larger than the diameter of the rubber ring 3. During the trimming process, the rubber ring 3 can play a certain role in buffering and positioning, helping to improve the trimming effect. The mounting plate 14 is a ring design, and its inner wall diameter is larger than the outer wall diameter of the handle 4, ensuring that the collar 13, the mounting plate 14 and the handle 4 can rotate flexibly without affecting the smoothness of the overall operation.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bearing shell conditioning tool, characterised in that, include: A cylinder (1) has a disc (2) fixedly connected to both sides of the cylinder (1). Rubber rings (3) are symmetrically installed on the outer wall of the cylinder (1). Handles (4) are fixedly connected to both ends of the cylinder (1). Velcro (5) is fitted on the outer wall of the cylinder (1). A disassembly and assembly component for disassembling and assembling the Velcro (5) is installed inside the cylinder (1). A scratch-resistant component for controlling the unidirectional rotation of the disc (2) is installed inside the disc (2).

2. The bushing trimming tool of claim 1, wherein The assembly and disassembly components include: a push plate (6), a push rod (7), a first locking block (8), and a compression spring (9). The push plate (6) is slidably connected to the axis of the cylinder (1), and the push rod (7) is fixedly connected to the axis on one side of the push plate (6). Multiple sets of first locking blocks (8) are symmetrically slidably connected to the inside of the cylinder (1) on one side of the push plate (6). One end of each first locking block (8) is fixedly connected to a compression spring (9), and one end of each compression spring (9) is fixed to the inner wall of the cylinder (1).

3. The bushing trimming tool of claim 2, wherein, The inner wall of the Velcro (5) is symmetrically fixedly connected to multiple sets of support plates (10), and the inner side of each set of support plates (10) is fixedly connected to a second locking block (11), and the first locking block (8) and the second locking block (11) are engaged.

4. The bushing trimming tool of claim 1, wherein, The anti-scratch assembly includes: a toothed disc (12), a collar (13), a mounting plate (14), a toothed claw (15), and a torque spring (16). The toothed disc (12) is fixedly connected to the inner wall of the disc (2), and the collar (13) is rotatably connected to the outer wall of the handle (4). The mounting plate (14) is rotatably connected to one side of the collar (13), and the toothed claw (15) is rotatably connected to the bottom of the mounting plate (14). The torque spring (16) is fixedly connected to the inner wall of the toothed claw (15), and one end of the torque spring (16) is fixedly connected to the mounting plate (14).

5. The bearing trimming fixture according to claim 2, characterized in that, One end of the push rod (7) passes through and extends out of the handle (4) near the push rod (7).

6. The bearing trimming fixture according to claim 3, characterized in that, The mounting plate (14) is a circular design, and its inner wall diameter is larger than the outer wall diameter of the handle (4).

7. The bushing trimming tool of claim 3, wherein The outer walls of the handle (4) and the collar (13) are both fitted with anti-slip textures.

8. The bushing trimming tool of claim 3, wherein, The inner wall of the toothed ring has multiple sets of tooth grooves (17), which are engaged with tooth claws (15). The tooth claws (15) can drive the toothed ring to rotate counterclockwise in one direction.

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