CN211466244U - Bearing pulling device - Google Patents

Abstract

The embodiment of the application discloses bearing is got and is pulled out device includes: taking and pulling the part; one end of the pulling piece is provided with a pulling groove, and the other end of the pulling piece is provided with a screw hole communicated with the pulling groove; the pulling piece is connected with a mandril screw through a screw hole thread; a steel ball which is matched with the groove on the bearing inner ring to realize clamping is arranged in the groove wall of the drawing groove; the pulling piece is sleeved with an elastic sleeve for pressing and locking the steel balls, and the elastic sleeve is detachably connected with the pulling piece. The utility model discloses can take out the bearing inner race fast under the condition that does not harm the guide pulley flange axle, both improve maintenance efficiency, practice thrift cost of maintenance again, be a high-quality bearing and get and pull out the device.

Description

A bearing extraction device

technical field

The present application relates to the technical field of mechanical maintenance tools, and in particular, to a bearing extraction and extraction device.

Background technique

In the production process of cigarettes, in order to ensure the normal use of the workshop equipment, at least a second round of wheel repairs for the rolling equipment is required every month, which involves regular replacement of the ZJ112 suction belt wing plate guide wheel bearing. Since the guide wheel is made of hard alloy, it is very easy to damage the guide wheel when disassembling the bearing, and the price of the guide wheel is high, which seriously affects the maintenance cost and maintenance efficiency of the equipment. Therefore, the utility model proposes a bearing extraction device.

Utility model content

The embodiment of the present application provides a bearing extracting device, so that the bearing inner ring can be quickly taken out without damaging the flange shaft of the guide wheel, which not only improves the maintenance efficiency, but also saves the maintenance cost.

In view of this, the present application provides a bearing extracting device, comprising: extracting parts;

One end of the extraction piece is provided with a extraction slot, and the other end is provided with a screw hole communicating with the extraction slot;

The extractor is threadedly connected with a push rod screw through the screw hole;

The groove wall of the extraction groove is provided with steel balls used to cooperate with the grooves on the inner ring of the bearing to realize clamping;

An elastic sleeve for pressing and locking the steel ball is sleeved on the extracting piece, and the elastic sleeve is detachably connected with the extracting piece.

Optionally, steel ball holes are opened on the groove wall of the extraction groove;

The steel ball is arranged in the steel ball hole, and the diameter of the steel ball is larger than the thickness of the wall of the extraction groove.

Optionally, the number of the steel balls is four;

The four steel balls are uniformly arranged in the groove wall of the extraction groove along the circumferential direction.

Optionally, the extractor includes a large-diameter section and a small-diameter section;

The diameter of the large-diameter section is larger than the diameter of the small-diameter section;

The large diameter section and the small diameter section are integrally formed.

Optionally, the extraction groove is located at an end of the large-diameter section away from the small-diameter section.

Optionally, a locking nut is sleeved on the small diameter section, and the locking nut is threadedly connected to the small diameter section;

The elastic sleeve is fixed on the large diameter section through the locking nut.

Optionally, the elastic sleeve is threadedly connected with the small diameter section.

Optionally, a tapered head is provided at one end of the ejector screw close to the extraction groove.

Optionally, an end of the ejector screw away from the extraction groove is provided with an outer hexagonal structure for cooperating with a wrench to realize tightening.

Optionally, an inner hexagonal groove is provided at one end of the ejector screw away from the extraction groove.

It can be seen from the above technical solutions that the embodiment of the present application has the following advantages: one end of the extracting member is provided with a extracting groove, the other end is provided with a screw hole communicating with the extracting groove, and the extracting member is screwed through the screw hole. For the ejector screw, the groove wall of the extraction groove is provided with a steel ball for matching with the groove on the inner ring of the bearing to realize the clamping connection. It is detachably connected with the extractor. When in use, insert the extractor containing the steel ball into the inner ring of the bearing to be taken out, and the inner ring of the bearing enters the extraction groove. When the steel ball falls into the groove of the inner ring of the bearing, By installing the elastic sleeve, the steel ball is pressed and fixed, so that the steel ball and the groove are completely clamped, and then the ejector screw is rotated to take out the inner ring of the bearing. Taking out the bearing inner ring not only improves the maintenance efficiency, but also saves the maintenance cost. At the same time, the extraction device can be applied to the disassembly and assembly of bearing inner rings of different specifications by replacing the locking inner ring, which has great promotion value.

Description of drawings

1 is a schematic structural diagram of a bearing extraction device in an embodiment of the application;

Fig. 2 is the structural schematic diagram of the extractor in the embodiment of the application;

3 is a front view of the extractor in the embodiment of the application;

Among them, the reference numerals are:

1-Pullout parts, 2-Ejector screw, 3-Elastic sleeve, 4-Lock nut, 5-Steel ball, 6-Bearing inner ring, 11-Large diameter section, 12-Small diameter section, 21-Conical head, 22-external hexagonal structure, 23-internal hexagonal groove, 111-extraction groove, 112-steel ball hole, 121-inlet groove, 122-screw hole.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

The present application provides an embodiment of a bearing extraction device, please refer to FIG. 1 and FIG. 2 for details.

The bearing extracting device in this embodiment includes: a extracting member 1, one end of the extracting member 1 is provided with a extracting groove 111, and the other end is provided with a screw hole 122 communicating with the extracting groove 111, and the extracting member 1 is provided with a screw hole 122. The hole 122 is threadedly connected with the ejector screw 2, the groove wall of the extraction groove 111 is provided with a steel ball 5 for cooperating with the groove on the bearing inner ring 6 to realize the clamping connection, and the extraction part 1 is sleeved with for pressing The elastic sleeve 3 of the steel ball 5 is locked, and the elastic sleeve 3 is detachably connected with the extractor 1 .

It should be noted that: one end of the extractor 1 is provided with a extractor slot 111, the other end is provided with a screw hole 122 communicating with the extractor groove 111, and the extractor 1 is threadedly connected with the ejector screw 2 through the screw hole 122, The groove wall of the extraction groove 111 is provided with a steel ball 5 for cooperating with the groove on the inner ring 6 of the bearing to realize the clamping connection, and an elastic sleeve 3 for pressing and locking the steel ball 5 is sleeved on the extraction part 1, and The elastic sleeve 3 is detachably connected to the extractor 1. When in use, the extractor 1 containing the steel ball 5 is put into the inner ring 6 of the bearing to be removed, and the inner ring 6 of the bearing enters the extraction groove 111. When the steel ball 5 falls, When it is inserted into the groove of the bearing inner ring 6, the steel ball 5 is pressed and fixed by installing the elastic sleeve 3, so that the steel ball 5 is completely clamped with the groove, and then the ejector screw 2 is rotated to take out the bearing inner ring 6. The extraction device can quickly take out the bearing inner ring 6 without damaging the flange shaft of the guide wheel, which not only improves the maintenance efficiency, but also saves the maintenance cost. The bearing inner ring 6 of the specification can be disassembled and assembled, which has great promotion value.

The above is the first embodiment of a bearing extraction and extraction device provided by the embodiment of the application, and the following is the second embodiment of the bearing extraction and extraction device provided by the embodiment of the application, please refer to FIG. 1 to FIG. 3 for details.

The bearing extracting device in this embodiment includes: a extracting member 1, one end of the extracting member 1 is provided with a extracting groove 111, and the other end is provided with a screw hole 122 communicating with the extracting groove 111. Specifically, the extracting member The other end of 1 is provided with an inlet slot 121 for facilitating the insertion of the ejector screw 2. The central position of the slot bottom of the inlet slot 121 is provided with a screw hole 122 that communicates with the extraction slot 111. The shape of the inlet slot 121 is circular, and The radius of the inlet slot 121 is slightly larger than the diameter of the screw hole 122, which is convenient for the ejector screw 2 to extend into; The grooves on the inner ring 6 are matched with the steel balls 5 to be snapped together. The pull-out member 1 is sleeved with an elastic sleeve 3 for pressing and locking the steel balls 5 , and the elastic sleeve 3 is detachably connected with the pull-out member 1 .

Specifically, a steel ball hole 112 is formed on the groove wall of the extraction groove 111 , the steel ball 5 is arranged in the steel ball hole 112 , and the diameter of the steel ball 5 is greater than the thickness of the groove wall of the extraction groove 111 .

It should be noted that the steel ball hole 112 is a through hole with a large center diameter and a small diameter at the upper and lower ends. This structure enables the steel ball 5 to move up and down to a certain extent in the steel ball hole 112 without falling out. When the inner ring 6 of the bearing needs to be taken out, the steel ball 5 will slide outward and then fall into the groove of the bearing inner ring 6. At this time, the steel ball 5 is blocked by installing the elastic sleeve 3, so that the steel ball 5 cannot move outward. , so as to realize the snap connection between the steel ball 5 and the bearing inner ring 6 .

As shown in FIG. 3 , the number of steel balls 5 is four, and the four steel balls 5 are evenly arranged in the groove wall of the extraction groove 111 along the circumferential direction. The steel ball 5 can greatly improve the fixing effect of the steel ball 5 and the groove of the bearing inner ring 6, so that the bearing inner ring 6 can be better removed.

The extractor 1 includes a large diameter section 11 and a small diameter section 12. The diameter of the large diameter section 11 is larger than that of the small diameter section 12, and the large diameter section 11 and the small diameter section 12 are integrally formed; the extraction groove 111 is located between the large diameter section 11 and the small diameter section. 12 ends away from each other.

The small diameter section 12 is sleeved with a locking nut 4, and the locking nut 4 is threadedly connected with the small diameter section 12, and the elastic sleeve 3 is fixed on the large diameter section 11 through the locking nut 4. Specifically, the outer wall of the small diameter section 12 is provided with There is an external thread, the locking nut 4 is threadedly connected with the small diameter section 12 through the external thread, and the elastic sleeve 3 sleeved on the small diameter section 12 is fixed on the large diameter section 11 .

It can be understood that the elastic sleeve 3 can be directly sleeved between the locking nut 4 and the large diameter section 11, and the elastic sleeve 3 can be fixed by the locking nut 4, or the elastic sleeve 3 can also be threadedly connected with the small diameter section 12. , when the elastic sleeve 3 is threadedly connected with the small diameter section 12, the connection is firmer and the fixing effect is better.

One end of the ejector screw 2 close to the extraction groove 111 is provided with a conical head 21 , which can facilitate the ejection of the bearing inner ring 6 .

One end of the ejector screw 2 away from the extraction groove 111 is provided with an outer hexagonal structure 22 for cooperating with a wrench to realize tightening, which is convenient for use.

The end of the mandrel screw 2 away from the extraction groove 111 is provided with an inner hexagonal groove 23. Specifically, an inner hexagonal groove 23 is provided in the center of the outer hexagonal structure 22, which can be used both with an outer hexagonal wrench and an inner hexagonal wrench, which is more convenient .

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions recorded in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims (10)

1. A bearing extracting device, characterized in that, comprising: extracting parts; One end of the extraction piece is provided with a extraction slot, and the other end is provided with a screw hole communicating with the extraction slot; The extractor is threadedly connected with a push rod screw through the screw hole; The groove wall of the extraction groove is provided with steel balls used to cooperate with the grooves on the inner ring of the bearing to realize clamping; An elastic sleeve for pressing and locking the steel ball is sleeved on the extracting piece, and the elastic sleeve is detachably connected with the extracting piece. 2. The bearing extraction device according to claim 1, wherein a steel ball hole is provided on the groove wall of the extraction groove; The steel ball is arranged in the steel ball hole, and the diameter of the steel ball is larger than the thickness of the wall of the extraction groove. 3. The bearing extraction device according to claim 1, wherein the number of the steel balls is four; The four steel balls are evenly arranged in the groove wall of the extraction groove along the circumferential direction. 4. The bearing extracting device according to claim 1, wherein the extracting member comprises a large diameter section and a small diameter section; The diameter of the large-diameter section is larger than the diameter of the small-diameter section; The large diameter section and the small diameter section are integrally formed. 5 . The bearing extraction and extraction device according to claim 4 , wherein the extraction groove is located at one end of the large-diameter section away from the small-diameter section. 6 . 6. The bearing extraction device according to claim 5, wherein a locking nut is sleeved on the small diameter section, and the locking nut is threadedly connected with the small diameter section; The elastic sleeve is fixed on the large diameter section through the locking nut. 7 . The bearing extraction device according to claim 5 , wherein the elastic sleeve is threadedly connected with the small diameter section. 8 . 8 . The bearing extraction device according to claim 1 , wherein a tapered head is provided at one end of the ejector screw close to the extraction groove. 9 . 9 . The bearing extraction and extraction device according to claim 1 , wherein the end of the ejector screw away from the extraction and extraction groove is provided with an outer hexagonal structure for cooperating with a wrench to realize tightening. 10 . 10 . The bearing extraction and extraction device according to claim 1 , wherein an inner hexagonal groove is provided at one end of the ejector screw away from the extraction and extraction groove. 11 .

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