Retractable bearing dismounting tool
By designing a shrink bearing disassembly tool including a shrink sleeve, a pull rod, a support sleeve and an adjustment nut, the problem of small removal space of the bearings in the high-pressure pump assembly is solved, convenient and safe disassembly of the bearings is achieved, and working efficiency is improved.
Patent Information
- Application Number
- CN202422162267.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-03
AI Technical Summary
When disassembling the bearings in the high-pressure pump assembly, due to the small removal space, conventional pullers cannot be applied, resulting in manual use of pry rods and hammers to disassemble them with bare hands, which is time-consuming and labor-intensive, inefficient, and may damage the bearings.
A shrink bearing disassembly tool is designed, including a shrink sleeve, a pull rod, a support sleeve and an adjustment nut. Through the shrink claws and hook blocks of the shrink sleeve, the structure of the pull rod and an adjustment nut is combined with the pull rod and an adjustment nut, the bearing is safe and conveniently disassembled.
The tooling is easy to operate, can effectively remove the bearings, improve work efficiency, reduce the risk of manual operation and bearing damage.
Smart Images
Figure CN222972081U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing disassembly, in particular to a shrinkable bearing disassembly tooling. Background Art
[0002] When disassembling the bearings in some high-pressure pump assemblies, due to the narrow disassembly space, the conventional pullers for bearing disassembly are not applicable. The existing method is to manually use a crowbar and a hammer to knock out the bearings by hand. During the disassembly process, since a hammer is used manually to knock out the bearings, it is not only time-consuming and laborious with low work efficiency, but also may damage the bearings and the bearing body. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a shrinkable bearing disassembly tooling with simple operation and convenient bearing disassembly.
[0004] To solve the above technical problem, the utility model provides a shrinkable bearing disassembly tooling, which includes a shrinkage sleeve, a pull rod, a support sleeve and an adjusting nut. A plurality of axially arranged through grooves are provided on the side of the shrinkage sleeve, the front end of the through groove is an opening, and a shrinkage claw is formed between two adjacent through grooves. A hook block is provided on the outer side of the shrinkage claw. The pull rod includes a screw rod and a pull plate fixed at the front end of the screw rod. The front end of the screw rod is inserted into the shrinkage sleeve, the pull plate extends out of the front end of the shrinkage sleeve and abuts against the front end of the shrinkage sleeve. The rear end of the screw rod passes through the support sleeve and extends out of the rear end of the support sleeve, and the adjusting nut is threadedly connected to the rear end of the screw rod, and the front end of the adjusting nut abuts against the rear end of the support sleeve.
[0005] As a preferred scheme of the utility model, a positioning table is provided between the rear end of the pull plate and the front end of the screw rod, and the positioning table is matched with the front end of the inner hole of the shrinkage sleeve.
[0006] As a preferred scheme of the utility model, a guiding table coaxial with the shrinkage sleeve is provided between the rear end of the positioning table and the front end of the screw rod, and the guiding table is in the shape of a frustum of a cone that gradually shrinks from front to back.
[0007] As a preferred scheme of the utility model, a guiding surface is provided on the outer side of the front end of the hook block, and the guiding surface is inclined gradually outward from front to back.
[0008] As a preferred scheme of the utility model, the pull plate is coaxial with the shrinkage sleeve, and the diameter of the pull plate is larger than the inner diameter of the shrinkage sleeve and less than or equal to the outer diameter of the shrinkage sleeve.
[0009] As a preferred embodiment of the present utility model, an end plate is provided at the rear end of the support sleeve. The end plate is provided with a through hole, and the screw rod can movably pass through the through hole. The front end of the adjusting nut abuts against the rear end of the end plate.
[0010] As a preferred embodiment of the present utility model, the material of the shrinkage sleeve is plastic.
[0011] In one embodiment of the present utility model, compared with the prior art, the beneficial effects are as follows: during use, first, the shrinkage sleeve is sleeved on the screw rod from the rear end of the screw rod; then, the front end of the screw rod and the pull plate are moved forward from the rear through the inner ring of the bearing to be removed; then, the shrinkage claws are moved inward so that the shrinkage sleeve shrinks and extends into the inner ring of the bearing to be removed; subsequently, the shrinkage sleeve is pushed forward until the hook block extends out of the front end of the bearing to be removed; then, the screw rod is pulled backward and the position of the screw rod is adjusted so that the rear end of the pull plate abuts against the front end of the shrinkage sleeve; thereafter, the rear end of the screw rod passes through the support sleeve and the support sleeve is fixed; then, the adjusting nut is installed at the rear end of the screw rod, and the adjusting nut is rotated so that the screw rod gradually moves backward. At this time, the pull plate pulls the shrinkage sleeve, and the hook block pulls the bearing to be removed, and finally the removal of the bearing to be removed is realized; this operation is simple and convenient, and can facilitate the removal of the bearing; the operation of the present utility model is simple and convenient, and can facilitate the removal of the bearing. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the present utility model during use;
[0013] Figure 2 is a partial enlarged view of the present utility model;
[0014] Figure 3 is a cross-sectional view of the shrinkage sleeve of the present utility model;
[0015] Figure 4 is a right view of the shrinkage sleeve of the present utility model;
[0016] Figure 5 is a schematic structural diagram of the pulling rod of the present utility model;
[0017] Figure 6 is a schematic structural diagram of the support sleeve of the present utility model;
[0018] In the figure, 1. Shrinkage sleeve; 11. Through groove; 12. Shrinkage claw; 13. Hook block; 131. Guide surface; 2. Pulling rod; 21. Screw rod; 22. Pull plate; 23. Positioning table; 24. Guide table; 3. Support sleeve; 31. End plate; 311. Through hole; 4. Adjusting nut. Detailed Embodiments
[0019] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. of the present utility model is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0021] As Figure 1-6 shown, a shrink-type bearing disassembly tooling of a preferred embodiment of the present utility model includes a shrink sleeve 1, a pull rod 2, a support sleeve 3 and an adjusting nut 4. A plurality of through grooves 11 arranged axially around the shrink sleeve 1 are provided on the side of the shrink sleeve 1. The front end of the through groove 11 is an opening. A shrink claw 12 is formed between two adjacent through grooves 11. It can be understood that the shrink sleeve 1 has a certain elasticity, that is, the shrink claw 12 can move inward when a force is applied, so as to realize the shrinkage of the shrink sleeve 1. After the force is removed, the shrink claw 12 will return to its initial state under the action of elastic force, that is, the shrink sleeve 1 will return to its initial state. A hook block 13 is provided on the outer side of the shrink claw 12. The pull rod 2 includes a screw rod 21 and a pull plate 22 fixed to the front end of the screw rod 21. The front end of the screw rod 21 is inserted into the shrink sleeve 1. The pull plate 22 extends out of the front end of the shrink sleeve 1 and abuts against the front end of the shrink sleeve 1. The rear end of the screw rod 21 passes through the support sleeve 3 and extends out of the rear end of the support sleeve 3. The adjusting nut 4 is threadedly connected to the rear end of the screw rod 21. The front end of the adjusting nut 4 abuts against the rear end of the support sleeve 3. Generally, the outer diameter of the shrink sleeve 1 is adapted to the inner diameter of the inner ring of the bearing to be disassembled, and the hook block 13 is in the shape of a fan ring with an outer diameter not greater than the outer diameter of the outer ring of the bearing to be disassembled.
[0022] The working principle of this embodiment is as follows: When in use, first put the shrinkage sleeve 1 onto the screw rod 21 from the rear end of the screw rod 21; then move the front end of the screw rod 21 and the pull plate 22 forward through the inner ring of the bearing to be removed; then move the shrinkage claws 12 inward so that the shrinkage sleeve 1 shrinks to extend into the inner ring of the bearing to be removed; subsequently, push the shrinkage sleeve 1 forward until the hook block 13 extends out of the front end of the bearing to be removed. At this time, the shrinkage sleeve 1 returns to its initial state, and the hook block 13 is located at the front end of the outer ring of the bearing to be removed; then pull the screw rod 21 backward and adjust the position of the screw rod 21 so that the rear end of the pull plate 22 abuts against the front end of the shrinkage sleeve 1; thereafter, pass the rear end of the screw rod 21 through the support sleeve 3 and fix the support sleeve 3 (generally, fix the rear end of the support sleeve 3 on the rear end face of the hole where the bearing to be removed is installed); then install the adjusting nut 4 on the rear end of the screw rod 21 and rotate the adjusting nut 4 so that the screw rod 21 gradually moves backward. At this time, the pull plate 22 pulls the shrinkage sleeve 1, and the hook block 13 pulls the bearing to be removed, finally realizing the disassembly of the bearing to be removed; this operation is simple and convenient for realizing the disassembly of the bearing.
[0023] Exemplarily, a positioning table 23 is provided between the rear end of the pull plate 22 and the front end of the screw rod 21. The positioning table 23 cooperates with the front end of the inner hole of the shrinkage sleeve 1, and the positioning table 23 is embedded in the front end of the inner hole of the shrinkage sleeve 1. When the pull plate 22 pulls the front end of the shrinkage sleeve 1 backward, the setting of the positioning table 23 can prevent the front end of the shrinkage sleeve 1 from shrinking, ensuring that the hook block 13 can pull out the bearing to be disassembled.
[0024] Exemplarily, a guiding table 24 coaxial with the shrinkage sleeve 1 is provided between the rear end of the positioning table 23 and the front end of the screw rod 21. The guiding table 24 is in the shape of a frustum of a cone that gradually shrinks from front to back. The front end of the screw rod 21 is fixedly connected to the rear end of the guiding table 24. After the pull plate 22 passes through the inner ring of the bearing, move the screw rod 21 backward. At this time, the guiding table 24 can play a guiding role to facilitate the positioning connection between the positioning table 23 and the inner hole of the shrinkage sleeve 1.
[0025] Exemplarily, a guiding surface 131 is provided on the outer side of the front end of the hook block 13. The guiding surface 131 is inclined gradually outward from front to back. When in use, when the shrinkage sleeve 1 extends into the inner ring of the bearing to be removed, the guiding surface 131 can play a guiding role, making the shrinkage claws 12 gradually move inward, so as to facilitate the shrinkage of the shrinkage sleeve 1 to extend into the inner ring of the bearing to be removed.
[0026] Exemplarily, the pull plate 22 is coaxial with the shrinkage sleeve 1. The cross-section of the pull plate 22 is circular. The diameter of the pull plate 22 is larger than the inner diameter of the shrinkage sleeve 1 (i.e., the aperture of the inner hole of the shrinkage sleeve 1) and less than or equal to the outer diameter of the shrinkage sleeve 1. When the pull plate 22 pulls the shrinkage sleeve 1 backward, the shrinkage sleeve 1 is stressed evenly, ensuring the stability of this tooling during use.
[0027] Exemplarily, a end plate 31 is provided at the rear end of the support sleeve 3. The end plate 31 is provided with a through hole 311. The screw rod 21 can movably pass through the through hole 311. The front end of the adjusting nut 4 abuts against the rear end of the end plate 31, which is convenient for the assembly of this tooling.
[0028] Exemplarily, the shrinkage sleeve 1 is made of plastic, has certain elasticity and high strength, which is convenient for production and manufacturing.
[0029] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.
Claims
1. A shrink-type bearing disassembly tool, characterized in that: It includes a shrink sleeve, a pulling rod, a supporting sleeve and an adjusting nut. The side of the shrink sleeve is provided with a plurality of through grooves arranged axially around the shrink sleeve. The front end of the through groove is open. A shrinking claw is formed between two adjacent through grooves. A hook block is provided on the outer side of the shrinking claw. The pulling rod includes a screw and a pulling plate fixed to the front end of the screw. The front end of the screw is inserted in the shrink sleeve. The pulling plate extends out of the front end of the shrink sleeve and abuts against the front end of the shrink sleeve. The rear end of the screw passes through the supporting sleeve and extends out of the rear end of the supporting sleeve. The adjusting nut is threadedly connected to the rear end of the screw, and the front end of the adjusting nut abuts against the rear end of the supporting sleeve.
2. The shrinkable bearing disassembly tool according to claim 1 is characterized in that: A positioning platform is provided between the rear end of the pulling plate and the front end of the screw rod, and the positioning platform is matched with the front end of the inner hole of the shrink sleeve.
3. The shrinkable bearing disassembly tool according to claim 2 is characterized in that: A guide platform coaxially arranged with the shrink sleeve is provided between the rear end of the positioning platform and the front end of the screw rod, and the guide platform is in the shape of a truncated cone that gradually shrinks from front to back.
4. The shrinkable bearing disassembly tool according to claim 1 is characterized in that: A guide surface is arranged on the outer side of the front end of the hook block, and the guide surface is gradually inclined outward from the front to the back.
5. The shrinkable bearing disassembly tool according to claim 1 is characterized in that: The pulling plate is coaxially arranged with the shrink sleeve, and the diameter of the pulling plate is larger than the inner diameter of the shrink sleeve and smaller than or equal to the outer diameter of the shrink sleeve.
6. The shrinkable bearing disassembly tool according to claim 1, characterized in that: An end plate is provided at the rear end of the support sleeve, and the end plate is provided with a through hole. The screw rod can movably pass through the through hole, and the front end of the adjusting nut abuts against the rear end of the end plate.
7. The shrinkable bearing disassembly tool according to claim 1, characterized in that: The shrink sleeve is made of plastic.