Bearing dismounting tool

Abstract

The utility model provides a bearing dismounting tool, which relates to the technical field of bearing dismounting tools and comprises a chuck, an H-shaped plate and a die. In the whole disassembling process, the die always acts on the inner ring of the bearing, the situation that the balls are damaged due to uneven stress is fundamentally avoided, the integrity of the bearing is guaranteed to a great extent, the service life of the disassembled bearing is remarkably prolonged, the cost expenditure caused by frequent replacement due to damage of the bearing is reduced, and meanwhile, the production efficiency is improved. By the adoption of the design that the die can be replaced, a limiting cylinder is driven to slide in a reserved hole by pulling a connecting rod, then a check block extrudes a reset spring, the limiting cylinder is separated from a limiting round hole, and an old die can be easily taken out; and the reset spring rebounds to enable the limiting cylinder to bounce into the limiting round hole to fix the die, so that one set of tool can adapt to the disassembly work of bearings with different sizes through the convenient operation, and the universality of the tool is greatly improved.

Description

Technical Field

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

[0002] In motor maintenance, bearings are key supporting components of the motor shaft, and their disassembly and assembly are performed extremely frequently.

[0003] Currently, commonly used bearing removal tools, such as three-jaw pullers and double-disc pullers, have significant drawbacks when removing bearings from shafts. Three-jaw pullers remove bearings by pulling on the outer ring, which puts stress on the balls, causing damage to the bearing and shortening its lifespan or even rendering it unusable. While double-disc pullers are an improvement over three-jaw pullers, they still apply stress to the outer ring, inevitably causing some damage. These problems not only increase motor maintenance costs but also affect maintenance efficiency and subsequent normal operation, thus requiring improvement. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a bearing disassembly tool.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bearing disassembly tool, comprising a chuck, an H-shaped plate, and a mold, wherein there are two sets of chucks and molds. A connecting block is fixedly installed on the outer wall of the mold. Limiting circular holes are opened on both sides of the connecting block. A slot is opened through one side of the chuck. A fixing plate is symmetrically fixedly installed on one side of the chuck. A reserved hole is opened through one side of the fixing plate. A limiting cylinder is slidably connected inside the reserved hole. A stop is fixedly installed on the outer wall of the limiting cylinder. A return spring is sleeved on the outer wall of the limiting cylinder. A connecting rod is fixedly installed at the end of the limiting cylinder away from the reserved hole. Connecting ears are fixedly installed on both sides of the chuck. A sliding hole is opened through one side of the connecting ear. A bolt is slidably connected inside the sliding hole. A nut is installed on the outer wall of the bolt. A slot is symmetrically opened through the top of the H-shaped plate. A second threaded rod is threadedly connected inside the H-shaped plate. A second knob is fixedly installed at the top of the second threaded rod.

[0006] Preferably, the connecting block and the slot are slidably connected.

[0007] Preferably, the outer wall of the second knob is provided with a second anti-slip groove.

[0008] Preferably, the bolt and nut are threaded together.

[0009] Preferably, the limiting cylinder and the limiting hole are slidably connected.

[0010] Preferably, one end of the return spring is fixedly connected to the fixed plate, and the other end of the return spring is fixedly connected to the stop block.

[0011] Preferably, the number of bolts and nuts is two sets each.

[0012] Preferably, a threaded cylinder is symmetrically fixedly installed on the top of the chuck, and a first threaded rod is threadedly connected to the inside of the threaded cylinder. A first knob is fixedly installed on the top end of the first threaded rod.

[0013] Preferably, the outer wall of the first knob is provided with a first anti-slip groove.

[0014] Preferably, both the threaded cylinder and the first threaded rod are slidably connected to the empty groove.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, the mold always acts on the inner ring of the bearing throughout the entire disassembly process, fundamentally avoiding damage to the balls due to uneven force, greatly ensuring the integrity of the bearing, significantly extending the service life of the disassembled bearing, and reducing the cost of frequent replacement due to bearing damage. At the same time, by adopting a replaceable mold design, by pulling the connecting rod, the limiting cylinder slides in the reserved hole, thereby causing the stop block to squeeze the return spring, and the limiting cylinder disengages from the limiting hole, making it easy to remove the old mold. After inserting the connecting block of the new mold into the slot, the connecting rod is released, and the return spring rebounds, causing the limiting cylinder to spring into the limiting hole to fix the mold. This convenient operation allows one set of tools to be adapted to the disassembly of bearings of different sizes, greatly improving the versatility of the tools. Compared with equipping each size of bearing with a special tool, it greatly saves the purchase cost.

[0017] 2. In this utility model, by rotating the first knob in sequence, the friction between the hand and the first knob is increased due to the uniform distribution of the first anti-slip grooves on the outer wall of the first knob, making it easier for the user to apply force. During the rotation, the first threaded rod connected to the first knob rotates in or out of the threaded cylinder. After rotating in or out a certain length, the first knob stops rotating. At this time, the H-shaped plate can slide between the first threaded rod and the outer wall of the threaded cylinder. This design allows for flexible adjustment of the starting position of the H-shaped plate according to the length of the motor shaft, which is convenient for use. Attached Figure Description

[0018] Figure 1 This utility model provides an overall structural diagram of a bearing disassembly tool;

[0019] Figure 2 This utility model provides an exploded view of a portion of the structure of a bearing disassembly tool;

[0020] Figure 3 This utility model proposes a bearing disassembly tool. Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This utility model provides a partial structural diagram of a bearing disassembly tool;

[0022] Figure 5 This invention provides a partial exploded side view of the structure of a bearing disassembly tool.

[0023] Legend: 1. Chuck; 2. H-shaped plate; 3. Mold; 4. Connecting block; 5. Limiting hole; 6. Slot; 7. Fixing plate; 8. Reserved hole; 9. Limiting cylinder; 10. Stop block; 11. Return spring; 12. Connecting rod; 13. Connecting lug; 14. Sliding hole; 15. Bolt; 16. Nut; 17. Threaded cylinder; 18. First threaded rod; 19. First knob; 20. First anti-slip groove; 21. Empty groove; 22. Second threaded rod; 23. Second knob; 24. Second anti-slip groove. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1: As Figures 1-4As shown, this utility model provides a technical solution: a bearing disassembly tool, including a chuck 1, an H-shaped plate 2, and a mold 3. There are two sets of chucks 1 and two sets of molds 3. A connecting block 4 is fixedly installed on the outer wall of the mold 3. Limiting circular holes 5 are opened on both sides of the connecting block 4. A slot 6 is opened through one side of the chuck 1. A fixing plate 7 is symmetrically fixedly installed on one side of the chuck 1. A reserved hole 8 is opened through one side of the fixing plate 7. A limiting cylinder 9 is slidably connected inside the reserved hole 8. A stop 10 is fixedly installed on the outer wall of the limiting cylinder 9. A return spring 11 is sleeved on the outer wall of the limiting cylinder 9. A connecting rod 12 is fixedly installed at the end of the limiting cylinder 9 away from the reserved hole 8. Connecting ears 13 are fixedly installed on both sides of the chuck 1. A sliding hole 14 is provided through one side of the 3, and a bolt 15 is slidably connected inside the sliding hole 14. A nut 16 is installed on the outer wall of the bolt 15. A slot 21 is symmetrically provided through the top of the H-shaped plate 2. A second threaded rod 22 is threadedly connected inside the H-shaped plate 2. A second knob 23 is fixedly installed at the top of the second threaded rod 22. The connecting block 4 is slidably connected to the slot 6. A second anti-slip groove 24 is evenly provided on the outer wall of the second knob 23. The bolt 15 and the nut 16 are threadedly connected. The limiting cylinder 9 is slidably connected to the limiting hole 5. One end of the return spring 11 is fixedly connected to the fixing plate 7. The other end of the return spring 11 is fixedly connected to the stop block 10. There are two sets of bolts 15 and nuts 16.

[0027] In this embodiment, throughout the disassembly process, the mold 3 always acts on the inner ring of the bearing, fundamentally avoiding damage to the balls due to uneven force, greatly ensuring the integrity of the bearing, significantly extending the service life of the disassembled bearing, and reducing the cost of frequent replacement due to bearing damage. At the same time, by adopting the design of a replaceable mold 3, by pulling the connecting rod 12, the limiting cylinder 9 slides in the reserved hole 8, thereby causing the stop block 10 to squeeze the return spring 11, and the limiting cylinder 9 disengages from the limiting hole 5, making it easy to remove the old mold 3. After inserting the connecting block 4 of the new mold 3 into the slot 6, the connecting rod 12 is released, and the return spring 11 rebounds, causing the limiting cylinder 9 to spring into the limiting hole 5 to fix the mold 3. This convenient operation allows one set of tools to be adapted to the disassembly of bearings of different sizes, greatly improving the versatility of the tools and significantly saving purchase costs compared to equipping each size of bearing with a special tool.

[0028] Example 2: Figure 1 and Figure 5 As shown, a threaded cylinder 17 is symmetrically fixedly installed on the top of the chuck 1. A first threaded rod 18 is threadedly connected inside the threaded cylinder 17. A first knob 19 is fixedly installed on the top of the first threaded rod 18. A first anti-slip groove 20 is evenly opened on the outer wall of the first knob 19. The threaded cylinder 17 and the first threaded rod 18 are slidably connected to the empty groove 21.

[0029] In this embodiment, by rotating the first knob 19 in sequence, the friction between the hand and the first knob 19 can be increased due to the uniform distribution of the first anti-slip grooves 20 on the outer wall of the first knob 19, making it easier for the user to apply force. During the rotation, the first threaded rod 18 connected to the first knob 19 screws in or out inside the threaded cylinder 17. After screwing in or out a certain length, the first knob 19 stops rotating. At this time, the H-shaped plate 2 can slide between the first threaded rod 18 and the outer wall of the threaded cylinder 17. This design allows for flexible adjustment of the starting position of the H-shaped plate 2 according to the length of the motor shaft, which is convenient for use.

[0030] The working principle of this embodiment is as follows: In use, firstly, place the two chucks 1, each equipped with a mold 3, on opposite sides of the bearing. After placement, place the two sets of molds 3 against the inner ring of the bearing. Then, sequentially pass the two sets of bolts 15 through the sliding holes 14 on one side of the connecting lugs 13. After passing through, align the two sets of nuts 16 with the bolts 15 and tighten them. After tightening, the two chucks 1 equipped with molds 3 are fixed to the bearing. After fixing, rotate the first knob 19 according to the length of the motor shaft. Since the outer wall of the first knob 19 has evenly distributed first anti-slip grooves 20, rotation increases the contact area between the hand and the first anti-slip groove. The friction between the knobs 19 facilitates the user's application of force. During rotation, the first threaded rod 18 connected to the first knob 19 screws in or out of the threaded cylinder 17. After screwing in or out a certain length, the first knob 19 stops rotating. At this time, the H-shaped plate 2 can slide between the first threaded rod 18 and the outer wall of the threaded cylinder 17. After sliding a certain distance, the H-shaped plate 2 presses against the first knob 19. After pressing against it, the second knob 23 is rotated. Because the outer wall of the second knob 23 is provided with a second anti-slip groove 24, the rotation operation is easier and less strenuous. As the second knob 23 continues to rotate, the second threaded rod 22 connected to it... The mechanism begins to move towards the bearing location within the internal threaded structure of the H-shaped plate 2. After moving a certain distance, the second threaded rod 22 will abut against the motor shaft. Once abutted, the second knob 23 continues to rotate. As the second knob 23 continues to rotate, the second threaded rod 22 continuously applies a thrust to the motor shaft. Since the bearing is fixed by two chucks 1 equipped with molds 3, and the H-shaped plate 2 abuts against the first knob 19, this thrust is transmitted through the H-shaped plate 2 to the entire chuck 1 and mold 3 structure. At this time, the mold 3 presses against the inner ring of the bearing. Under the continuous thrust of the second threaded rod 22, the chuck 1 and mold 3 structure... The moving bearing moves along the motor shaft. During this process, it is necessary to constantly monitor the separation of the bearing from the motor shaft to ensure that the thrust is uniform and stable, and to avoid the bearing tilting or being damaged due to uneven force. As the second threaded rod 22 rotates continuously, the thrust continues to increase, and the fit between the bearing and the motor shaft gradually loosens. Finally, the bearing is successfully detached from the motor shaft. Throughout the disassembly process, the mold 3 always acts on the inner ring of the bearing, avoiding the problem of the ball bearing being damaged due to the force acting on the outer ring of traditional tools. This greatly ensures the integrity of the bearing, effectively improves the efficiency and quality of motor maintenance work, and reduces maintenance costs.When it is necessary to change the mold 3 according to the size of the bearing, first pull the connecting rod 12 to make it slide the limiting cylinder 9 inside the reserved hole 8. During the sliding process, the limiting cylinder 9 will drive the stop block 10 to press the return spring 11 towards the fixed plate 7. After pressing to a certain extent, the limiting cylinder 9 will disengage from the limiting hole 5. After disengagement, the mold 3 can be pulled to remove the connecting block 4 from the slot 6. After removal, the connecting block 4 on the new mold 3 is inserted into the slot 6. After insertion, the connecting rod 12 is released. At this time, the rebound force of the return spring 11 will push the limiting cylinder 9 into the limiting hole 5, thereby fixing the position of the mold 3.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A bearing disassembly tool, comprising a chuck (1), an H-shaped plate (2), and a mold (3), characterized in that: The number of chucks (1) and molds (3) are both two sets. A connecting block (4) is fixedly installed on the outer wall of the mold (3). Limiting holes (5) are opened on both sides of the connecting block (4). A slot (6) is opened through one side of the chuck (1). A fixing plate (7) is symmetrically fixedly installed on one side of the chuck (1). A reserved hole (8) is opened through one side of the fixing plate (7). A limiting cylinder (9) is slidably connected inside the reserved hole (8). A stop block (10) is fixedly installed on the outer wall of the limiting cylinder (9). A return spring (11) is sleeved on the outer wall of the limiting cylinder (9). A connecting rod (12) is fixedly installed at one end of the limiting cylinder (9) away from the reserved hole (8). Connecting ears (13) are fixedly installed on both sides of the chuck (1). A sliding hole (14) is opened through one side of the connecting ear (13). A bolt (15) is slidably connected inside the sliding hole (14). A nut (16) is installed on the outer wall of the bolt (15). A slot (21) is symmetrically opened through the top of the H-shaped plate (2). A second threaded rod (22) is threadedly connected inside the H-shaped plate (2). A second knob (23) is fixedly installed at the top of the second threaded rod (22).

2. The bearing disassembly tool according to claim 1, characterized in that: The connecting block (4) is slidably connected to the slot (6).

3. The bearing disassembly tool according to claim 1, characterized in that: The outer wall of the second knob (23) is evenly provided with second anti-slip grooves (24).

4. The bearing disassembly tool according to claim 1, characterized in that: The bolt (15) and nut (16) are threaded together.

5. The bearing disassembly tool according to claim 1, characterized in that: The limiting cylinder (9) and the limiting hole (5) are slidably connected.

6. The bearing disassembly tool according to claim 1, characterized in that: One end of the reset spring (11) is fixedly connected to the fixed plate (7), and the other end of the reset spring (11) is fixedly connected to the stop block (10).

7. The bearing disassembly tool according to claim 1, characterized in that: The number of bolts (15) and nuts (16) are both two sets.

8. The bearing disassembly tool according to claim 1, characterized in that: A threaded cylinder (17) is symmetrically fixedly installed on the top of the chuck (1), and a first threaded rod (18) is threadedly connected inside the threaded cylinder (17). A first knob (19) is fixedly installed on the top of the first threaded rod (18).

9. The bearing disassembly tool according to claim 8, characterized in that: The outer wall of the first knob (19) is uniformly provided with first anti-slip grooves (20).

10. The bearing disassembly tool according to claim 8, characterized in that: Both the threaded cylinder (17) and the first threaded rod (18) are slidably connected to the empty groove (21).

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