CN219685391U - Bearing inner sleeve dismounting tool - Google Patents

Abstract

The utility model relates to the technical field of maintenance of electromechanical equipment, in particular to a bearing inner sleeve disassembling tool which comprises a bolt (1), a sleeve (2) and a jacking screw (5), wherein the jacking screw (5) is attached to a bearing inner sleeve (4), and the bearing inner sleeve (4) can be pulled out from the rotating body (3) by continuously screwing the bolt (1) after being abutted against the rotating body (3).

Description

Bearing inner sleeve dismounting tool

Technical Field

The utility model relates to the technical field of maintenance of electromechanical equipment, in particular to a bearing inner sleeve dismounting tool.

Background

The bearing is an important part in mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing friction coefficient in the motion process and ensuring the rotation precision. In order to prevent abrasion caused by relative rotation, the bearing inner sleeve and the rotating body are tightly matched, and the bearing and the rotating body are difficult to disassemble due to factors such as rust, abrasion, deformation and the like. When the bearing is disassembled by using common tools such as a puller, the condition that the bearing outer sleeve is disassembled and the inner sleeve is still remained on the rotating body often happens, and the process of disassembling the residual bearing inner sleeve from the rotating body is laborious and time-consuming.

Disclosure of Invention

The utility model provides a bearing inner sleeve disassembling tool, which can easily and quickly take out the residual bearing inner sleeve by adopting the technical scheme provided by the utility model, and has the advantages of simple structure and low manufacturing cost.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a bearing inner race extracting tool, it includes bolt, sleeve pipe, top tight screw, the sleeve pipe includes big footpath body portion and coaxial an organic whole set up in the path body portion of big footpath body portion one end side, and the pipe wall inner circumference side of path body portion is for the screw thread through-hole that supplies the bolt to screw in and pass, on the cross-section of same height from the sleeve pipe bottom of the other end side of big footpath body portion, along circumference equidistance be equipped with more than two supplies the screw hole that the top tight screw was screwed in.

Preferably, the bolt is a full-threaded external hexagonal bolt or a full-threaded internal hexagonal screw.

Preferably, the tightening screw is an inner hexagonal screw or an outer hexagonal screw.

Preferably, the small-diameter pipe body is a solid round steel body positioned at one end side of the top of the large-diameter pipe body, and the threaded through hole is formed in the center of the solid round steel body.

Preferably, three or four of the screw holes are provided at equal intervals in the circumferential direction on the same-height cross section.

Preferably, two or more screw holes are provided at equal intervals in the circumferential direction in cross sections at different heights from the bottom of the sleeve on the other end side of the large-diameter pipe body.

Preferably, the outer peripheral surface of the small-diameter tube portion or the large-diameter tube portion is formed into a convex shape.

Preferably, the lower end side of the large-diameter pipe body is further provided with a larger-diameter expanded-diameter pipe body and corresponding screw holes continuously.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a bearing inner sleeve disassembling tool, which can easily and quickly take out the residual bearing inner sleeve 4 by adopting the technical scheme provided by the utility model, and has the advantages of simple structure and low manufacturing cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the use of a bearing inner sleeve removal tool of the present utility model;

fig. 2 (a) and (B) are schematic views of longitudinal and transverse sectional structures of a sleeve of the bearing inner sleeve removing tool;

fig. 3 shows a schematic structural view of the bearing inner sleeve removing tool in an assembled state;

in fig. 1: 1-bolt, 2-sleeve, 3-rotator, 4-bearing inner sleeve, 5-jack screw.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Embodiment 1 of the present utility model will be described with reference to fig. 1 and 2.

The bearing inner sleeve dismounting tool comprises a bolt 1 (also called a long bolt), a sleeve 2 and a jacking screw 5, wherein the bolt 1 is a full-thread outer hexagonal bolt or a full-thread inner hexagonal screw, only the top (corresponding to one end side) of the sleeve 2 is a solid round steel body, a small part of the sleeve 2 is provided with a threaded through hole (corresponding to a small-diameter pipe body part) in the center, the rest part is tubular (corresponding to a large-diameter pipe body part), and four uniformly distributed threaded holes are formed in the section at the same height from the bottom of the sleeve 2; the jacking screw 5 can be an inner hexagon screw or an outer hexagon screw. The top of the sleeve 2, for example, the outer peripheral surface of the small-diameter pipe body is processed into a convex shape, and the sleeve 2 can be prevented from rotating when the bolt 1 is screwed by clamping the opening wrench on the convex part. The sleeve 2 is provided with a plurality of groups of threaded holes on sections with different heights from the bottom, so that the rotating body 3 which protrudes out of the bearing inner sleeve 4 with different lengths can be matched better.

Embodiment 2 of the present utility model will be described with reference to fig. 1 and 2.

In a second aspect of the present utility model, there is provided a dismounting method using the above-described bearing inner sleeve dismounting tool, further comprising a rotating body 3 (e.g., a shaft) and a bearing inner sleeve 4, characterized by comprising the steps of:

step one: penetrating the sleeve 2 into the rotating body 3 so as to be sleeved outside the rotating body 3 until the threaded hole at the bottom of the sleeve 2 is aligned with the cambered surface of the bearing inner sleeve 4;

step two: four jacking screws 5 are screwed in and are attached to the cambered surface of the bearing inner sleeve 4;

step three: the bolt 1 is screwed in until the bearing inner sleeve 4 is pulled off the rotating body 3.

Therefore, the sleeve can be sleeved on the rotating body (shaft), the sleeve is provided with a threaded hole, the threaded hole is aligned with the bearing inner sleeve and then screwed into the bolt to be contacted with the bearing inner sleeve, and the outer surface of the bearing inner sleeve is provided with an arc surface, so that the bolt can clamp the bearing inner sleeve to move together with the sleeve.

The straight cylindrical large-diameter tube body of the sleeve 2 is shown above, but the lower end side (corresponding to the other end side) of the large-diameter tube body may be further provided with a larger-diameter expanded-diameter tube body and corresponding screw holes in succession, so that the bearing inner sleeves of different outer diameters may be applied to the bottom side of the sleeve 2.

Compared with the prior art, the utility model has the beneficial effects that: therefore, the utility model provides a bearing inner sleeve disassembling tool and a disassembling method, and by adopting the technical scheme provided by the utility model, the residual bearing inner sleeve can be easily and quickly taken out, and the bearing inner sleeve disassembling tool is simple in structure and low in manufacturing cost.

While the utility model has been described with reference to various specific embodiments, it should be understood that numerous changes could be made within the spirit and scope of the inventive concepts described. Accordingly, it is intended that the utility model not be limited to the described embodiments, but that it have the full scope defined by the language of the following claims.

Claims (8)

1. The utility model provides a bearing inner race extracting tool which characterized in that: the sleeve comprises a large-diameter pipe body and a small-diameter pipe body coaxially integrally arranged at one end side of the large-diameter pipe body, the inner periphery side of the pipe wall of the small-diameter pipe body is provided with threaded through holes for the bolts to be screwed in and pass through, and more than two threaded holes for the tight jacking screws to be screwed in are formed in the same height of the cross section of the sleeve bottom at the other end side of the large-diameter pipe body along the circumferential direction at equal intervals.

2. The bearing inner sleeve removing tool as set forth in claim 1, wherein: the bolt is a full-thread external hexagonal bolt or a full-thread internal hexagonal screw.

3. The bearing inner sleeve removing tool as set forth in claim 1, wherein: the jacking screw is an inner hexagon screw or an outer hexagon screw.

4. The bearing inner sleeve removing tool as set forth in claim 1, wherein: the small-diameter pipe body is a solid round steel body positioned at one end side of the top of the large-diameter pipe body, and the threaded through hole is formed in the center of the solid round steel body.

5. The bearing inner sleeve removing tool as set forth in claim 1, wherein: and three or four threaded holes are circumferentially and equidistantly arranged on the cross section with the same height.

6. The bearing inner sleeve removing tool as set forth in claim 1, wherein: two or more screw holes are provided at equal intervals in the circumferential direction on sections of different heights from the bottom of the sleeve on the other end side of the large-diameter pipe body.

7. The bearing inner sleeve removing tool as set forth in claim 1, wherein: the outer peripheral surface of the small-diameter tube body or the large-diameter tube body is formed into a convex shape.

8. The bearing inner sleeve removing tool as set forth in claim 1, wherein: the lower end side of the large-diameter pipe body is also continuously provided with a larger-diameter expanded-diameter pipe body and a corresponding threaded hole.