Bearing dismounting tool
By designing a bearing disassembly tool including a support and a pulling mechanism, the problem of easy damage to the bearing in the prior art during the disassembly is solved, and the effect of protecting the bearing during the disassembly is achieved.
Patent Information
- Application Number
- CN202420272250.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-02-04
AI Technical Summary
The existing bearing disassembly tooling is prone to damage the bearings during the disassembly process, resulting in the scrapping of the bearings.
A bearing disassembly tool including a support and a drawing mechanism is designed. The base side of the support is provided with a recess for placing the bearing and a through groove for the rotary shaft to pass through. The axis of the recess and the through groove are colinear. The rotation shaft is drawn axially by using the pulling mechanism to gradually separate the rotation shaft from the bearing, and only radial force is applied to protect the bearing.
This tool only applies radial force during the disassembly process to effectively protect the bearing, avoid damage and extend the service life of the bearing.
Smart Images
Figure CN222589530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical tooling accessories, in particular to a bearing disassembly tool. Background Art
[0002] Bearings are important parts in mechanical equipment. Their main function is to support the mechanical rotating body and reduce the mechanical load friction coefficient of the equipment during the transmission process. They are used in all walks of life. When mechanical equipment is being maintained, or when unqualified products appear in the manufacturing process, the shaft and bearings need to be disassembled and the bearings need to be recycled and reused. Some current bearing disassembly tools can improve the disassembly efficiency through disassembly tools, but some bearing disassembly tools are easy to cause bearing damage during disassembly, resulting in the scrapping of the bearing. Utility Model Content
[0003] The utility model aims to provide a bearing disassembly tool which can effectively protect the bearing from being damaged.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a bearing disassembly tool, including a support and a pulling mechanism, a recess for placing the bearing is opened on the side of the base of the support, and a through groove for the rotating shaft to pass through is also provided on the base, and the through groove extends from the middle of the recess to the edge of the base, and the axes of the recess, the through groove and the pulling mechanism are collinear.
[0005] The cross-section of the recessed portion is in the shape of a Chinese character "concave", and includes a main groove. An annular convex ring is provided on the inner wall of the main groove adjacent to the drawing mechanism and protrudes toward the groove cavity. The inner diameter of the annular convex ring is larger than the inner diameter of the bearing inner ring and smaller than the outer diameter of the bearing inner ring. The inner wall of the annular convex ring constitutes a part of the groove body of the through groove.
[0006] The depth of the main groove shall not be less than half of the diameter of the bearing outer ring, and the depth of the through groove shall not be less than half of the diameter of the shaft.
[0007] The distance between the annular protrusion and the groove wall on the other side of the main groove is greater than the axial thickness of the bearing.
[0008] The support is in the shape of a square as a whole, and comprises a base, a top seat, and side seats located on both sides of the base and the top seat for fixed connection. The pulling mechanism is threadedly connected with the top seat.
[0009] The pulling mechanism comprises a threaded rod, which passes through a threaded hole provided on the top seat, one end of the threaded rod adjacent to the base is connected with a clamping head, and the other end is provided with a handle.
[0010] The clamping head comprises a connecting section and a clamping section. The clamping section is provided with a cutout along its axial direction. A circular hole is formed at the center of the cutout. In a natural state, the inner diameter of the circular hole matches the diameter of the rotating shaft.
[0011] The incision is cross-shaped, the round hole is arranged at the center of the cross-shaped incision, and a narrow gap is left between the entities on both sides of the incision.
[0012] In the above scheme, when in use, first place the bearing of the shaft to be rotated into the recess, place the shaft into the through groove, then adjust the pulling mechanism to clamp the free end of the shaft, use the pulling mechanism to axially pull the shaft, and gradually separate the shaft and the bearing. Since the bearing only bears radial force, the bearing is not easily damaged during the separation process. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the tooling;
[0014] Figure 2 for Figure 1 The middle part is an enlarged schematic diagram;
[0015] Figure 3 It is a schematic diagram of the use status of the tooling;
[0016] Figure 4 for Figure 3 The middle part is an enlarged schematic diagram;
[0017] Figure 5 This is a cross-sectional view of the tooling. DETAILED DESCRIPTION
[0018] Combine the following Figure 1-Figure 5 The utility model is further described in detail.
[0019] A bearing disassembly tool comprises a support 10 and a pulling mechanism 20. A recess 111 for placing a bearing A is provided on the side of the base 11 of the support 10. A through slot 112 for a rotating shaft B to pass through is also provided on the base 11. The through slot 112 extends from the middle of the recess 111 to the edge of the base 11. The axes of the recess 111, the through slot 112 and the pulling mechanism 20 are collinear. When in use, the bearing A of the rotating shaft B is first placed in the recess 111, and the rotating shaft B is placed in the through slot 112. Then, the pulling mechanism 20 is adjusted to clamp the free end of the rotating shaft B. The rotating shaft B is axially pulled by the pulling mechanism 20 to gradually separate the rotating shaft B and the bearing A. Since the bearing B only bears radial force, the bearing A is not easily damaged during the separation process.
[0020] As a preferred solution of the utility model, the cross section of the recess 111 is in the shape of a Chinese character "concave", and includes a main groove 111a. The inner wall of the main groove 111a adjacent to the drawing mechanism 20 is provided with an annular convex ring 111b protruding toward the groove cavity. The inner diameter of the annular convex ring 111b is larger than the inner diameter of the inner ring of the bearing A and smaller than the outer diameter of the inner ring of the bearing A. The inner wall of the annular convex ring 111b constitutes a part of the groove body of the through groove 112. When the bearing A is placed in the main groove 111a, when the shaft B is subjected to an outward drawing force, the annular convex ring 111b is abutted against the end face of the inner ring of the bearing A, limiting the position of the inner ring of the bearing A.
[0021] In order to ensure reliable positioning of the bearing A, the depth of the main groove 111a is not less than half of the outer ring diameter of the bearing A, and the depth of the through groove 112 is not less than half of the diameter of the shaft B. Preferably, the depth of the main groove 111a is equal to half of the outer ring diameter of the bearing A, and the depth of the through groove 112 is equal to half of the shaft B diameter.
[0022] In order to facilitate the taking and placing of the bearing A, the distance between the annular protrusion 111b and the groove wall on the other side of the main groove 111a is greater than the axial thickness of the bearing A, leaving space in the axial direction.
[0023] Furthermore, the support 10 is in a U-shape as a whole, including a base 11 and a top seat 12, and side seats 13 located on both sides of the base 11 and the top seat 12 for fixed connection, and the pulling mechanism 20 is threadedly connected to the top seat 12.
[0024] Furthermore, the pulling mechanism 20 includes a threaded rod 21, which passes through a threaded hole on the top seat 12. One end of the threaded rod 21 near the base 11 is connected to a clamping head 22, and the other end is provided with a handle 23. The linear motion of the clamping head 22 is ensured by the screw nut mechanism, so that the rotating shaft B is pulled outward.
[0025] The clamping head 22 includes a connecting section 221 and a clamping section 222. The clamping section 222 is provided with a cutout 222a along its axial direction. A circular hole 222b is formed at the center of the cutout 222a. In a natural state, the inner diameter of the circular hole 222b matches the diameter of the rotating shaft B. Here, the clamping head 22 can be replaced according to the rotating shaft B of different diameters to improve the versatility of the tooling. The circular hole 222b is smaller than the rotating shaft B. The rotating shaft B is conical. The more it is inserted into the circular hole 222b, the tighter it is. The rotating shaft B can be inserted very deeply, and the friction is very large. The rotating shaft B has patterns to increase the friction.
[0026] Furthermore, the cutout 222a is cross-shaped, the circular hole 222b is arranged at the center of the cross-shaped cutout 222a, and a narrow gap is left between the entities on both sides of the cutout 222a to facilitate processing.
Claims
1. A bearing disassembly tool, comprising a support (10) and a pulling mechanism (20), characterized in that: A recess (111) for accommodating a bearing (A) is provided on a side surface of a base (11) of the support (10); a through slot (112) for the rotating shaft (B) to pass through is also provided on the base (11); the through slot (112) extends from the middle of the recess (111) to the edge of the base (11); and the axes of the recess (111), the through slot (112) and the pulling mechanism (20) are collinear.
2. The bearing disassembly tool according to claim 1, characterized in that: The recessed portion (111) has a "concave"-shaped cross section and comprises a main groove (111a). An annular convex ring (111b) is provided on the inner wall of the main groove (111a) adjacent to the drawing mechanism (20) and protrudes toward the groove cavity. The inner diameter of the annular convex ring (111b) is larger than the inner diameter of the inner ring of the bearing (A) and smaller than the outer diameter of the inner ring of the bearing (A). The inner wall of the annular convex ring (111b) constitutes a part of the groove body of the through groove (112).
3. The bearing disassembly tool according to claim 2, characterized in that: The depth of the main groove (111a) is not less than half the diameter of the outer ring of the bearing (A), and the depth of the through groove (112) is not less than half the diameter of the rotating shaft (B).
4. The bearing disassembly tool according to claim 2, characterized in that: The distance between the annular protrusion (111b) and the groove wall on the other side of the main groove (111a) is greater than the axial thickness of the bearing (A).
5. The bearing disassembly tool according to claim 1, characterized in that: The support (10) is in the shape of a square as a whole, and comprises a base (11) and a top seat (12), as well as side seats (13) located on both sides of the base (11) and the top seat (12) for fixed connection, and the pulling mechanism (20) is threadedly connected to the top seat (12).
6. The bearing disassembly tool according to claim 5, characterized in that: The pulling mechanism (20) comprises a threaded rod (21), the threaded rod (21) passing through a threaded hole provided on the top seat (12), one end of the threaded rod (21) adjacent to the base (11) is connected to a clamping head (22), and the other end is provided with a handle (23).
7. The bearing disassembly tool according to claim 6, characterized in that: The clamping head (22) comprises a connecting section (221) and a clamping section (222); the clamping section (222) is provided with a cutout (222a) along its axial direction; a circular hole (222b) is formed at the center of the cutout (222a); in a natural state, the inner diameter of the circular hole (222b) matches the diameter of the rotating shaft (B).
8. The bearing disassembly tool according to claim 7, characterized in that: The cutout (222a) is in a cross shape, the circular hole (222b) is arranged at the center of the cross-shaped cutout (222a), and a narrow gap is left between the entities on both sides of the cutout (222a).