A device for disassembling bearings

Abstract

This utility model relates to the field of bearing processing, specifically to a device for disassembling bearings, including a fixing component and a disassembly mechanism. The disassembly mechanism includes a fixing sleeve and a rotating component. The rotating component passes through the fixing sleeve and connects to the bearing inside the fixing component. The rotating component is a rotating rod, with a fixing block at one end. An expansion component is provided on the outside of the fixing block, and the expansion component is movably sleeved on the rotating rod. This utility model adopts a linkage structure (protrusion and groove cooperation) between the expansion disassembly sleeve and the internal support rod, achieving force balance on the inner ring of the bearing through uniform radial expansion force, completely avoiding the risk of raceway deformation caused by traditional hammering. The multi-directional groove design on the side wall of the disassembly sleeve ensures uniform distribution of expansion force, reduces local stress concentration, and meets the requirements for intact disassembly of precision bearings.

Description

Technical Field

[0001] This utility model belongs to the field of bearing processing technology, and in particular relates to a device for disassembling bearings. Background Technology

[0002] In the maintenance of mechanical equipment, bearings, as critical transmission components, require regular replacement. Traditional bearing disassembly operations suffer from two main technical defects: First, the use of forceful disassembly methods such as hammering and prying can easily cause irreversible damage such as bearing raceway deformation and cage breakage, which may lead to cascading damage, especially in the maintenance of precision equipment. Second, when using mechanical disassembly tools, there are generally problems with structural redundancy. A typical example is the three-jaw puller, which requires multiple parts to operate. Its jaw adjustment mechanism is complex and has the defect of uneven radial force distribution. In actual operation, unstable clamping often leads to slippage of the bearing inner ring, affecting disassembly efficiency. Although existing patented technologies include hydraulic expansion disassembly devices, they generally suffer from bulky actuators, inability to adapt to multiple bearing sizes, and difficulty in effective operation in confined spaces.

[0003] Therefore, there is an urgent need to develop a bearing disassembly device that is compact, has stable clamping, and is adaptable to various working conditions, so as to achieve rapid disassembly without damaging the bearing structure. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a device for disassembling bearings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for disassembling a bearing, comprising a fixing component and a disassembly mechanism. The disassembly mechanism includes a fixing sleeve and a rotating component. The rotating component passes through the fixing sleeve and is connected to the bearing inside the fixing component. The rotating component is a rotating rod. A fixing block is provided at one end of the rotating rod. An expansion component is provided on the outside of the fixing block. The expansion component is movably sleeved on the rotating rod.

[0006] Preferably, the expansion member is a disassembly sleeve, which has a hollow structure and openings on both end faces, and the side wall of the disassembly sleeve has a groove.

[0007] Preferably, a support rod is provided inside the rotating rod, both ends of which pass through the rotating rod, and one end of the support rod is provided with a protrusion that is adapted to the disassembly sleeve.

[0008] Preferably, the fixing sleeve includes a fixing ring and a fixing cylinder, the fixing cylinder is connected to one of the open ends of the fixing ring, and the fixing ring is screwed onto the rotating rod.

[0009] Preferably, the rotating rod has a threaded sidewall, and the rotating rod is threadedly connected to the fixed sleeve.

[0010] Preferably, a glove is fitted onto the rotating rod, and a fixed handle is connected to the side wall of the glove.

[0011] Preferably, the fastener includes a bearing mounting base and a bearing body, wherein the bearing body is mounted on the bearing mounting base.

[0012] Preferably, when the disassembly sleeve is located inside the bearing body, the bearing body and the disassembly sleeve are adapted to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model adopts a linkage structure of expansion disassembly sleeve and internal support rod (protrusion and groove cooperation), which realizes the force balance of the bearing inner ring through uniform radial expansion force, and completely avoids the risk of raceway deformation caused by traditional hammering. The multi-directional groove design of the side wall of the disassembly sleeve makes the expansion force evenly distributed, reduces the phenomenon of local stress concentration, and meets the requirements of integrity disassembly of precision bearings.

[0015] (2) The "fixed block expansion component" combination mechanism in this utility model converts the axial displacement of the threaded rod into the radial deformation of the disassembly sleeve. The wedge-shaped fit structure between the support rod protrusion and the disassembly sleeve groove automatically compensates for the dimensional tolerances of different bearing inner rings during the tightening process, thus solving the slippage problem.

[0016] (3) The present invention decomposes the fixed sleeve into a modular design of a fixed ring and a fixed cylinder, which reduces the axial installation space requirement. The threaded transmission mechanism is integrated into the rotating rod, which can adapt to operation in narrow spaces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembly mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the support rod of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the fastener of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the expansion component of this utility model;

[0022] In the diagram: 1. Fixing component; 2. Disassembly mechanism; 3. Fixing sleeve; 4. Rotating component; 5. Fixing block; 6. Expansion component; 7. Disassembly sleeve; 8. Support rod; 9. Fixing ring; 10. Fixing cylinder; 11. Handle; 12. Bearing mounting base; 13. Bearing body; Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Please see Figure 1-5 To achieve the above objectives, this embodiment provides a device for disassembling bearings, including a fixing component 1 and a disassembly mechanism 2. The fixing component 1 includes a bearing mounting seat 12 and a bearing body 13. The bearing mounting seat 12 is used to fix the base of the bearing body 13 and is usually connected to the equipment housing. The target bearing to be disassembled is installed in the bearing mounting seat 12. The disassembly mechanism 2 includes a fixing sleeve 3 and a rotating component 4. The fixing sleeve 3 includes a fixing ring 9 and a fixing cylinder 10. The fixing ring 9 is threadedly connected to the rotating rod to provide axial positioning. The fixing cylinder 10 is connected to the fixing ring 9 and is sleeved on the outside of the bearing to provide a guiding function.

[0026] In this embodiment, the rotating component 4 is a rotating rod, located in the center of the fixed sleeve 3, with threaded sidewalls, and passes through the fixed sleeve 3 to connect with the bearing.

[0027] In this embodiment, the fixing block 5 is located at one end of the rotating rod and is used to limit the position of the expansion member 6.

[0028] In this embodiment, the expansion member 6 is a disassembly sleeve 7: a hollow sleeve with grooves on the side wall, which is movably sleeved on the rotating rod and can expand radially.

[0029] In this embodiment, the support rod 8 is built into the rotating rod, with a protrusion at one end for pushing the disassembly sleeve 7 to expand it.

[0030] In this embodiment, the glove 11 is fitted onto the rotating rod, and a fixed handle is connected to the side wall to provide a fulcrum for applying force.

[0031] In this embodiment, the disassembly sleeve 7 achieves radial elastic deformation through the side wall groove, and after expansion, it fits tightly with the inner ring of the bearing to transmit tensile force.

[0032] In this embodiment, the linkage between the support rod 8 and the protrusion pushes the inner wall of the disassembly sleeve 7, causing it to expand outward and enhance the contact friction with the bearing.

[0033] In this embodiment, the rotating rod is threadedly connected to the fixed sleeve 3. When the rotating rod rotates, the fixed sleeve 3 generates axial displacement through threaded transmission, providing a smooth pulling force.

[0034] Working principle

[0035] Installation stage: Insert the disassembly sleeve 7 into the inner ring of the bearing, rotate the rotating rod to make the protrusion of the support rod 8 press against the inner wall of the disassembly sleeve 7, causing it to expand and lock the bearing.

[0036] Disassembly stage: Hold the fixed handle and rotate the rotating rod. Since the fixed sleeve 3 is threadedly engaged with the rotating rod, the rotation of the rotating rod is converted into axial tension, which pulls the bearing out at a constant speed through the expansion member 6.

[0037] In other embodiments, a guide keyway can be added inside the fixed cylinder 10 to cooperate with the key on the outer wall of the disassembly sleeve 7 to prevent rotational slippage.

[0038] In other embodiments, the fixed handle 11 is lengthened or a ratchet mechanism is added to reduce the operating torque.

[0039] In other embodiments, a buffer pad is installed between the fixing block 5 and the bearing end face to prevent damage to the bearing seat during pulling.

[0040] In other embodiments, the device is particularly suitable for precision bearing disassembly in space-constrained scenarios, such as motor and gearbox repair, combining high efficiency and safety.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A device for dismounting a bearing, characterized in that: It includes a fixing component and a disassembly mechanism. The disassembly mechanism includes a fixing sleeve and a rotating component. The rotating component passes through the fixing sleeve and is connected to the bearing inside the fixing component. The rotating component is a rotating rod. One end of the rotating rod is provided with a fixing block. An expansion component is provided on the outside of the fixing block. The expansion component is movably sleeved on the rotating rod.

2. The device for disassembling a bearing according to claim 1, characterized in that: The expansion component is a disassembly sleeve, which has a hollow structure and openings on both end faces. The side wall of the disassembly sleeve has a groove.

3. The device for disassembling a bearing according to claim 2, characterized in that: The rotating rod has a support rod inside, with both ends of the support rod passing through the rotating rod. One end of the support rod has a protrusion that is adapted to the disassembly sleeve.

4. The device for disassembling a bearing according to claim 2, characterized in that: The fixing sleeve includes a fixing ring and a fixing cylinder. The fixing cylinder is connected to one of the open ends of the fixing ring, and the fixing ring is screwed onto the rotating rod.

5. The device for disassembling a bearing according to claim 1, characterized in that: The rotating rod has threads on its side wall, and the rotating rod is threadedly connected to the fixed sleeve.

6. The device for disassembling a bearing according to claim 5, characterized in that: A glove is fitted onto the rotating rod, and a fixed handle is connected to the side wall of the glove.

7. The device for disassembling a bearing according to claim 2, characterized in that: The fastener includes a bearing mounting base and a bearing body, the bearing body being mounted on the bearing mounting base.

8. The device for disassembling a bearing according to claim 7, characterized in that: When the disassembly sleeve is located inside the bearing body, the bearing body and the disassembly sleeve are adapted to each other.

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