CN223989253U - A blind bore inner bearing outer ring disassembly device - Google Patents
A blind bore inner bearing outer ring disassembly deviceInfo
- Publication number
- CN223989253U CN223989253U CN202520533916.7U CN202520533916U CN223989253U CN 223989253 U CN223989253 U CN 223989253U CN 202520533916 U CN202520533916 U CN 202520533916U CN 223989253 U CN223989253 U CN 223989253U
- Authority
- CN
- China
- Prior art keywords
- pulling
- hammer
- pin
- clamping unit
- outer ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Mounting Of Bearings Or Others (AREA)
- Automatic Assembly (AREA)
Abstract
本实用新型提供了一种盲孔内轴承外圈拆卸装置，涉及轴承外圈拆卸装置，解决了现有技术采用拉拔器拉拔的方法拆卸盲孔内轴承外圈，存在容易打滑、损伤待拆轴承外圈边缘，且不适用于盲孔较深或孔径较小的安装环境的技术问题。本实用新型包括拔拆杆、夹紧单元与拔锤；拔拆杆的一端为手柄，另一端与夹紧单元连接；手柄内侧的拔拆杆上设置有挡块；拔锤套设在拔拆杆上，拔锤可在挡块与夹紧单元之间滑动；夹紧单元用于夹紧待拆轴承外圈，包括销盘和顶销；销盘的外周设置有至少三个螺纹孔，每个螺纹孔均安装有一个顶销；销盘的外径小于待拆轴承外圈的内径。
This utility model provides a device for disassembling the outer ring of a bearing with a blind hole. It addresses the technical problems of existing methods that use a puller to disassemble the outer ring of a bearing with a blind hole, which are prone to slippage, damage to the edge of the outer ring, and are unsuitable for installation environments with deep or small-diameter blind holes. This utility model includes a pull rod, a clamping unit, and a pull hammer. One end of the pull rod is a handle, and the other end is connected to the clamping unit. A stop is provided on the pull rod inside the handle. The pull hammer is sleeved on the pull rod and can slide between the stop and the clamping unit. The clamping unit is used to clamp the outer ring of the bearing to be disassembled and includes a pin disc and a top pin. The outer circumference of the pin disc has at least three threaded holes, each threaded hole housing a top pin. The outer diameter of the pin disc is smaller than the inner diameter of the outer ring of the bearing to be disassembled.
Description
Technical Field
The utility model relates to a bearing outer ring dismounting device, in particular to a bearing outer ring dismounting device in a blind hole.
Background
In the maintenance process of mechanical equipment, the situation that the bearing outer ring scattered in the blind hole is required to be disassembled often happens, and because the bearing outer ring is limited by factors such as working environment and conditions, bearing positions and the like, the bearing outer ring scattered in the blind hole is disassembled by adopting a drawing method of a drawing device in the prior art, namely, the bearing outer ring to be disassembled is fixed through a drawing claw, a supporting arm props against a shaft or an orifice, then a central screw rod is rotated, and a pulling force is gradually applied, so that the bearing outer ring to be disassembled is slowly pulled out. However, in the process of disassembly, the pull claw needs to be penetrated into the blind hole and hooked on the edge of the outer ring of the bearing to be disassembled, so that the method is easy to slip and even damage the edge of the outer ring of the bearing to be disassembled, and when the depth of the blind hole is deeper or the aperture is smaller, the conventional pull claw cannot be hooked on the edge of the outer ring of the bearing to be disassembled effectively, so that force cannot be applied.
The utility model patent with publication number CN214394040U discloses a bearing disassembly tool, which is realized by penetrating a connecting piece with a scalable size through an inner hole of a bearing first and then expanding the connecting piece to clamp the bearing. However, the dismounting device needs to penetrate through the inner hole of the bearing, only the whole bearing can be dismounted, and the dismounting of the outer ring of the bearing which is scattered in the blind hole independently still cannot be realized.
Disclosure of utility model
The utility model aims to solve the technical problems that in the prior art, a puller pulling method is adopted to detach a bearing outer ring in a blind hole, the edge of the bearing outer ring to be detached is easy to slip and damage, and the device is not suitable for an installation environment with a deep blind hole or a small aperture, and provides a device for detaching the bearing outer ring in the blind hole.
In order to achieve the above object, the technical solution provided by the present utility model is:
The dismounting device for the bearing outer ring in the blind hole is characterized by comprising a dismounting rod, a clamping unit and a hammer;
One end of the pulling and dismantling rod is a handle, and the other end of the pulling and dismantling rod is connected with the clamping unit;
The pulling hammer is sleeved on the pulling and detaching rod and can slide between the stop block and the clamping unit;
The clamping unit is used for clamping the outer ring of the bearing to be disassembled and comprises a pin disc and a jacking pin;
The outer periphery of the pin disc is provided with at least three threaded holes, each threaded hole is provided with one jacking pin, and the outer diameter of the pin disc is smaller than the inner diameter of the outer ring of the bearing to be disassembled.
Further, in order to ensure that the moment is uniform in the process of disassembling the outer ring of the bearing to be disassembled, at least three jacking pins are uniformly distributed on the periphery of a pin disc, and each jacking pin comprises a head part, a connecting section, an operating section and a mounting section which are sequentially connected;
The front end of the head part is a sphere and is used for propping up the outer ring of the bearing to be disassembled;
The connecting section is a columnar body, one end of the connecting section is connected with the head, and the other end of the connecting section is connected with the operating section;
The outer wall of the operation section is at least provided with two clamping surfaces which correspond to each other and are used for clamping by an installation tool and installing a top pin;
the outer wall of the mounting section is provided with external threads.
Further, the clamping unit further comprises a connecting rod, one end of the connecting rod is connected with the pin disc, the other end of the connecting rod is provided with external threads, and the connecting rod is connected with a threaded hole formed in the other end of the pulling-out and disassembling rod.
Further, in order to facilitate holding, the pulling hammer is a columnar body, a through hole is formed in the axial direction of the columnar body and used for sleeving the pulling hammer on the pulling and disassembling rod, one end, close to the clamping unit, of the pulling hammer is in arc transition, one end, close to the stop block, of the pulling hammer is in a plane shape, the outer diameter of the pulling hammer is larger than the outer diameter of one end, close to the clamping unit, of the pulling hammer, and the middle of the periphery of the pulling hammer is in a concave curved surface shape.
Further, in order to reduce the knocking surface and noise, one end of the stop block close to the pulling hammer is provided with a round table, the outer diameter of the round table is larger than the diameter of the axial through hole in the pulling hammer, one end close to the handle is provided with a frustum, the small end of the frustum is connected with the round table, and the outer diameters of the two are the same.
Further, the periphery of the pin disc is uniformly provided with three threaded holes.
Further, in order to prevent slipping during use, knurling is provided on the handle.
Further, the handle, the pin plate, the ejector pin and the connecting rod are made of medium carbon steel materials;
The pulling hammer is made of high-carbon chromium bearing steel materials.
The utility model has the beneficial effects that:
1. the utility model has simple structure, low manufacturing cost, convenient disassembly and replacement and long service life.
2. According to the utility model, the pin discs or the ejector pins with different specifications can be replaced according to the size of the outer ring of the bearing to be disassembled and the actual disassembly condition, so that the application range is effectively enlarged, and the universality of the device is improved.
3. According to the utility model, the heads of the plurality of jacking pins are tightly propped against the outer ring of the bearing to be disassembled, so that stable clamping and fixing are realized, slipping or offset is effectively avoided, the risk of damaging the outer ring of the bearing to be disassembled is reduced, and a basis is provided for solving the problem of similar working conditions.
4. According to the utility model, the repeated drawing of the bearing outer ring to be disassembled is realized by sliding the pull hammer between the stop block and the clamping unit, the operation is simple and convenient, the disassembly efficiency is high, the noise is low, the time and the labor are saved, and the safety and the durability are realized.
Drawings
FIG. 1 is a schematic view of a device for removing a bearing outer ring from a blind hole according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic view of a pulling and disassembling rod according to an embodiment of the present utility model;
FIG. 4 is a schematic perspective view of a hammer according to an embodiment of the present utility model;
FIG. 5 is a schematic view of the structure of the pin plate and connecting rod in an embodiment of the utility model;
FIG. 6 is a schematic perspective view of a knock pin according to an embodiment of the present utility model;
FIG. 7 is a schematic perspective view of an outer race of a bearing to be disassembled according to an embodiment of the present utility model;
FIG. 8 is a side view of a bearing outer race to be disassembled in an embodiment of the utility model.
Reference numerals:
the device comprises a 1-pulling and detaching rod, a 2-clamping unit, a 3-pulling hammer, a 4-bearing outer ring to be detached, a 11-handle, a 12-stop block, a 21-pin plate, a 21-1-threaded hole, a 22-ejector pin, a 22-1-head, a 22-2-connecting section, a 22-3-operating section, a 22-4-mounting section and a 23-connecting rod.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and specific examples:
The blind hole inner bearing outer ring dismounting device comprises a pulling and dismounting rod 1, a clamping unit 2 and a pulling and dismounting hammer 3, wherein one end of the pulling and dismounting rod 1 is a handle 11, knurling is arranged on the handle 11 and used for increasing friction force and preventing slipping in use, the handle 11 is made of medium carbon steel, the other end of the pulling and dismounting rod 1 is provided with a threaded hole and connected with the clamping unit 2, a stop block 12 is arranged on the pulling and dismounting rod 1 on the inner side of the handle 11, the pulling and dismounting rod 1 is an integral piece, the pulling and dismounting hammer 3 is sleeved on the pulling and dismounting rod 1, the pulling and dismounting hammer 3 can slide between the stop block 12 and the clamping unit 2, the hardness of the pulling and dismounting hammer 3 is larger than that of the pulling and dismounting rod 1 and the clamping unit 2, the pulling and dismounting hammer 3 is made of high carbon chromium bearing steel, the pulling and dismounting rod 1 is made of medium carbon steel, the clamping unit 2 is used for clamping the bearing outer ring 4 to be dismounted, the pin 21 and the top pin 22, the stop block 12 is close to one end of the pulling and dismounting hammer 3 is provided with a round table, knocking surface can be effectively reduced, the noise can be reduced to a certain extent, the outer diameter of the pulling and the pulling hammer is larger than the outer diameter of the handle is larger than the diameter of the handle and the inner diameter of the pulling and the hammer is close to the end of the same with the round table 11, and the diameter of the round table is equal to the diameter of the round table.
As shown in fig. 4, the pulling hammer 3 is a cylindrical body, a through hole is formed in the axial direction of the cylindrical body and is used for sleeving the pulling hammer 3 on the pulling and disassembling rod 1, one end, close to the clamping unit 2, of the pulling hammer 3 is in arc transition, one end, close to the stop block 12, is in a plane shape, the outer diameter of the end, close to the clamping unit 2, is larger than the outer diameter of the end, close to the clamping unit 2, of the pulling hammer 3, and the middle of the outer periphery of the pulling hammer 3 is in a concave curved surface shape, so that good holding feeling and comfort feeling can be provided.
As shown in fig. 5 and 6, at least three threaded holes 21-1 are formed in the periphery of the pin plate 21, one jacking pin 22 is mounted on each threaded hole 21-1, the outer diameter of the pin plate 21 is smaller than the inner diameter of the bearing outer ring 4 to be disassembled, the pin plate 21 is made of medium carbon steel, in order to ensure that moment is uniform in the process of disassembling the bearing outer ring to be disassembled, at least three jacking pins 22 are uniformly distributed on the periphery of the pin plate 21, each jacking pin 22 comprises a head 22-1, a connecting section 22-2, an operating section 22-3 and a mounting section 22-4 which are sequentially connected, the front end of the head 22-1 is a spherical body and used for jacking the bearing outer ring 4 to be disassembled, the connecting section 22-2 is a cylindrical body, one end of the connecting section 22-2 is connected with the head 22-1, the other end of the connecting section 22-3 is connected with the operating section 22-3, at least two clamping surfaces which correspond to each other are arranged on the outer wall of the operating section 22-3 and are used for clamping and mounting the jacking pins 22, the outer wall of the mounting section 22-4 is provided with external threads, the pin 22 is made of medium carbon steel, the jacking pin 2 further comprises a connecting rod 23, one end of the connecting rod 23 is connected with the pin 21, the other end of the connecting rod 21 is connected with the connecting rod 1 by the connecting rod is provided with the external thread, and the connecting rod is provided with the threaded hole 1.
As shown in fig. 7 and 8, in the process of disassembling the bearing outer ring to be disassembled, the head 22-1 of the knock pin is made to press against the inner ring groove of the bearing outer ring 4 to be disassembled by adjusting the position of the knock pin 22.
According to the utility model, the pull hammer 3 is made of GCr15 material with the hardness of 58-63HRC, the pull and detach rod 1 and the clamping unit 2 are made of 45 # steel material with the hardness of 40-45HRC, three threaded holes 21-1 are uniformly formed in the periphery of the pin disc 21, the included angle between the threaded holes is 120 degrees, the number of the jacking pins 22 is three, and the diameter of a through hole of the pull hammer 3 is 1mm different from the outer diameter of the pull and detach rod 1, so that the pull hammer 3 can slide freely.
The working principle of the bearing outer ring dismounting device in the blind hole of the embodiment is as follows:
1) At least three knock pins 22 are fitted into screw holes in the outer periphery of the pin plate 21 with a tool, thereby achieving the mounting of the clamping unit 2.
2) The positions of the jacking pins 22 are roughly adjusted according to the inner diameter of the bearing outer ring 4 to be disassembled, so that the outer circle diameter formed by the front ends of the heads of at least three jacking pins 22 is smaller than the inner diameter of the bearing outer ring 4 to be disassembled.
3) The clamping unit 2 is arranged in the bearing outer ring 4 to be disassembled, the clamping surfaces of the operating sections 22-3 of the jacking pins 22 are clamped by the tool, the jacking pins 22 are respectively and uniformly rotated, and the front ends of the heads of at least three jacking pins 22 are sequentially contacted and abutted against the inner ring groove of the bearing outer ring 4 to be disassembled, so that positioning and clamping are realized.
4) The pulling hammer 3 is sleeved on the pulling and dismantling rod 1, then the threaded hole of the pulling and dismantling rod 1 is aligned with the external thread of the connecting rod 23, the pulling and dismantling rod 1 is rotated clockwise until the pulling and dismantling rod 1 cannot rotate, and the pulling and dismantling rod 1 and the connecting rod are firmly connected.
5) The knurling department of handle 11 is gripped to the left hand, and the right hand grips and pulls out hammer 3, makes it follow pull out and tear lever 1 and slide from top to bottom to constantly strike dog 12 hard, through striking repeatedly and drawing, makes wait to tear open bearing inner race 4 slowly promote, finally pulls out, and the dismantlement is accomplished.
The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any changes or substitutions within the technical scope of the present utility model should be covered by the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a bearing inner race dismounting device which characterized in that:
comprises a pulling and dismantling rod (1), a clamping unit (2) and a pulling hammer (3);
One end of the pulling and dismantling rod (1) is provided with a handle (11), and the other end of the pulling and dismantling rod is connected with the clamping unit (2), and a stop block (12) is arranged on the pulling and dismantling rod (1) at the inner side of the handle (11);
The pulling hammer (3) is sleeved on the pulling and detaching rod (1), and the pulling hammer (3) can slide between the stop block (12) and the clamping unit (2);
the clamping unit (2) is used for clamping the bearing outer ring (4) to be disassembled and comprises a pin disc (21) and a top pin (22);
At least three threaded holes (21-1) are formed in the periphery of the pin disc (21), one jacking pin (22) is mounted in each threaded hole (21-1), and the outer diameter of the pin disc (21) is smaller than the inner diameter of the bearing outer ring (4) to be disassembled.
2. The blind hole inner bearing outer race dismounting device as set forth in claim 1, wherein:
At least three jacking pins (22) are uniformly distributed on the periphery of the pin disc (21), and each jacking pin (22) comprises a head (22-1), a connecting section (22-2), an operating section (22-3) and a mounting section (22-4) which are sequentially connected;
The front end of the head part (22-1) is a spheroid and is used for propping up the bearing outer ring (4) to be disassembled;
The connecting section (22-2) is a columnar body, one end of the connecting section is connected with the head (22-1), and the other end of the connecting section is connected with the operating section (22-3);
the outer wall of the operation section (22-3) is provided with at least two clamping surfaces which correspond to each other and are used for clamping an installation tool and installing a top pin (22);
The outer wall of the mounting section (22-4) is provided with external threads.
3. The blind hole inner bearing outer race dismounting device as set forth in claim 1, wherein:
The clamping unit (2) further comprises a connecting rod (23), one end of the connecting rod (23) is connected with the pin disc (21), the other end of the connecting rod is provided with external threads, and the connecting rod is connected with a threaded hole formed in the other end of the pulling-out and disassembling rod (1).
4. A blind hole inner bearing outer race dismounting apparatus according to claim 3, characterized in that:
The pulling hammer (3) is a columnar body, a through hole is formed in the axial direction of the pulling hammer, the pulling hammer (3) is sleeved on the pulling and detaching rod (1), one end, close to the clamping unit (2), of the pulling hammer (3) is in arc transition, one end, close to the stop block (12), is in a plane shape, the outer diameter of the end, close to the clamping unit (2), of the pulling hammer is larger than the outer diameter of the end, close to the clamping unit (2), of the pulling hammer, and the middle part of the periphery of the pulling hammer (3) is in a concave curved surface shape.
5. The blind hole inner bearing outer race dismounting device as set forth in claim 4, wherein:
one end of the stop block (12) close to the pulling hammer (3) is provided with a round table, the outer diameter of the round table is larger than the diameter of the axial through hole in the pulling hammer (3), one end close to the handle (11) is provided with a frustum, the small end of the frustum is connected with the round table, and the outer diameters of the frustum and the frustum are the same.
6. The blind hole inner bearing outer race dismounting device as set forth in claim 1, wherein:
three threaded holes (21-1) are uniformly formed in the periphery of the pin disc (21).
7. The blind hole inner bearing outer race dismounting device as set forth in claim 1, wherein:
The handle (11) is provided with knurling.
8. A blind hole inner bearing outer race dismounting apparatus according to claim 3, characterized in that:
The handle (11), the pin disc (21), the ejector pin (22) and the connecting rod (23) are made of medium carbon steel materials;
the pulling hammer (3) is made of high-carbon chromium bearing steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520533916.7U CN223989253U (en) | 2025-03-25 | 2025-03-25 | A blind bore inner bearing outer ring disassembly device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520533916.7U CN223989253U (en) | 2025-03-25 | 2025-03-25 | A blind bore inner bearing outer ring disassembly device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223989253U true CN223989253U (en) | 2026-03-13 |
Family
ID=99003161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520533916.7U Active CN223989253U (en) | 2025-03-25 | 2025-03-25 | A blind bore inner bearing outer ring disassembly device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223989253U (en) |
-
2025
- 2025-03-25 CN CN202520533916.7U patent/CN223989253U/en active Active
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