CN210909828U - Special tool for disassembling small-diameter bearing - Google Patents

Special tool for disassembling small-diameter bearing Download PDF

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Publication number
CN210909828U
CN210909828U CN201920811892.1U CN201920811892U CN210909828U CN 210909828 U CN210909828 U CN 210909828U CN 201920811892 U CN201920811892 U CN 201920811892U CN 210909828 U CN210909828 U CN 210909828U
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China
Prior art keywords
bearing
disk body
gasket
small
disassembling
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CN201920811892.1U
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Chinese (zh)
Inventor
王龙
裴广会
苏大鹏
杨金星
沈宗宏
于光楠
孙逸凡
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Tianjin Sdic Jinneng Electric Power Co ltd
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Tianjin Sdic Jinneng Electric Power Co ltd
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Abstract

The utility model discloses a minor diameter bearing dismantles specialized tool, including first disk body, second disk body, pull rod, first disk body is installed in one side that the bearing is close to equipment, is provided with the gasket between first disk body and the bearing, through recess and lug fixed mounting between gasket and the first disk body, and the second disk body is through a plurality of pull rods and first disk body fixed connection, and one side that the second disk is close to the bearing is supported and is equipped with ejection mechanism, and ejection mechanism supports and establishes the one side at the equipment pump shaft. The utility model aims at providing a simple structure's minor diameter bearing dismantles specialized tool, can realize the dismantlement of the most middle-size and small-size bearing of current, because even atress when dismantling, the protection bearing that can be fine takes place the local atress of bearing and causes the deformation too greatly, simultaneously because there is not relative motion between extracting tool and the axle when dismantling, fine having avoided the spindle nose damage and having torn open more tightly when causing the dismantlement because of the spindle nose damages thickening, has improved dismantlement efficiency.

Description

Special tool for disassembling small-diameter bearing
Technical Field
The utility model relates to a tooling equipment technical field especially relates to a minor diameter bearing dismantles specialized tool.
Background
The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The method of mounting the bearing varies depending on the bearing structure, fit, and conditions, and generally, since the shaft rotates in many cases, the inner ring needs to be fitted with interference. Cylindrical hole bearing, press-in by multi-purpose press or hot-packing method. In the case of a taper hole, the taper hole is directly installed on a taper shaft or installed by a sleeve.
At present, the universal dismounting tool for the bearing is a three-jaw puller, namely pulling the bearing out by pulling three points on the outer edge of the bearing. In the process of using the puller to pull out the bearing, due to uneven stress, and certain relative motion exists between the grab puller and the shaft during disassembly, the shaft head is damaged and becomes thicker due to the damage of the shaft head, the disassembly is more and more tight, even the bearing is damaged and cannot be pulled out, so that the bearing cannot be continuously used, a new bearing has to be replaced, a plurality of overhauling costs are greatly increased, and due to the fact that the size of the bearing is various, the bearing disassembling tool cannot be suitable for bearings of different sizes, and the universality is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing a specialized tool is dismantled to simple structure's minor diameter bearing can realize the dismantlement of the most middle-size and small-size bearing of current, because even atress when dismantling, the protection bearing that can be fine takes place that the local atress of bearing is too big to cause the deformation, simultaneously because there is not relative motion when dismantling between extracting tool and the axle, fine having avoided the spindle nose damage and having torn open more tightly when causing the dismantlement because of the spindle nose damages thickening, has improved dismantlement efficiency.
The utility model provides a technical scheme that above-mentioned technical problem adopted is: the utility model provides a minor diameter bearing dismantles specialized tool, includes first disk body, second disk body, pull rod, first disk body is installed in one side that the bearing is close to equipment, be provided with the gasket between first disk body and the bearing, the surface that first disk body is close to bearing one side is equipped with the recess, one side that the gasket is close to first disk body is equipped with the lug, through recess and lug fixed mounting between gasket and the first disk body, the second disk body passes through a plurality of pull rods and first disk body fixed connection, one side that the second disk body is close to the bearing is supported and is equipped with ejection mechanism, ejection mechanism supports and establishes the one side at the equipment pump shaft.
Furthermore, the number of the pull rods is four.
Furthermore, a plurality of the outer surfaces of the pull rods are provided with threads, and the pull rods are connected with the first disc body and the second disc body through bolts.
Further, the second disk body includes first concatenation piece and second concatenation piece, be equipped with the connecting piece on the first concatenation piece, the second concatenation piece passes through connecting piece and first concatenation piece fixed connection.
Further, the ejection mechanism is specifically a jack.
Further, the gasket comprises two semicircular gaskets with the same shape, and the outer diameter of each gasket is the same as that of the bearing.
Furthermore, the gasket and the pull rods are made of carbon steel.
The utility model has the advantages that:
the bearing dismounting tool of the utility model has the advantages that the gasket is arranged between the bearing and the first disk body and is made of carbon steel, so that the gasket has certain strength, the gaskets with different sizes can be replaced according to bearings with different models, the device is suitable for bearings with bearing inner diameters within a certain range, the dismounting of most of the existing middle and small bearings is realized, the universality is better, and the bearing is well protected from deformation caused by too large local stress of the bearing due to uniform stress between the first disk body and the bearing during dismounting; meanwhile, due to the introduction of the jack, the labor is saved greatly compared with the conventional three-jaw puller during disassembly, and because the jack does not move relative to the shaft during disassembly, the damage of the shaft head and the fact that the shaft head is damaged and thickened, the disassembly is tighter and tighter, and even the shaft head is damaged and cannot be pulled out are well avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.
Fig. 3 is a schematic structural diagram of the first tray body of the present invention.
Fig. 4 is a schematic structural diagram of the second tray of the present invention.
Fig. 5 is a schematic structural diagram of the gasket of the present invention.
Wherein:
1. the shaft pump comprises a shaft pump body, 2, a first disc body, 3, a second disc body, 31, a first splicing sheet, 32, a second splicing sheet, 33, a connecting piece, 4, a pull rod, 5, a jack, 6, a bearing, 7, a gasket, 8, a groove, 9 and a convex block.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, 2 and 3, the special tool for disassembling the small-diameter bearing comprises a first disc body 2, a second disc body 3 and pull rods 4, wherein the first disc body 2 is installed on one side of a bearing 6 close to the equipment, a gasket 7 is arranged between the first disc body 2 and the bearing 6, a groove 8 is arranged on the surface of one side of the first disc body 2 close to the bearing 6, a convex block 9 is arranged on one side of the gasket 7 close to the first disc body 2, the gasket 7 and the first disc body 2 are fixedly installed through the groove 8 and the convex block 9, through holes penetrating through the first disc body 2 and the second disc body 3 are arranged, the second disc body 3 penetrates through the through holes through a plurality of pull rods 4 and is fixedly connected with the first disc body 2, the pull rods 4 are four in number, the pull rods 4 are made of carbon steel, the outer surfaces of the four pull rods 4 are provided with threads, and the four pull rods 4 and, The second disc body 3 is connected through bolts, and the bearings 6 are uniformly pulled out when being disassembled due to uniform stress between the first disc body 2 and the bearings 6, so that the phenomenon that shaft necks are roughened to damage pump shafts due to deflection of the bearings 6 when being pulled is prevented;
the side, close to the bearing 6, of the second disc 2 is abutted with an ejection mechanism, the ejection mechanism is abutted to one side of the equipment pump shaft 1, the ejection mechanism is specifically a jack 5, and due to the fact that no relative motion exists between the jack 5 and the shaft during disassembly, the shaft head damage and the disassembly caused by the fact that the shaft head is damaged and thickened are prevented from being more and more tightly disassembled, and even damaged and cannot be pulled out.
As shown in fig. 4, the second tray 3 includes a first splicing sheet 31 and a second splicing sheet 32, a connecting member 33 is disposed on the first splicing sheet 31, and the second splicing sheet 32 is fixedly connected to the first splicing sheet 31 through the connecting member 33.
As shown in fig. 5, the gasket 7 includes two semicircular gaskets with the same shape, the outer diameter of the gasket 7 is the same as that of the bearing 6, the gasket 7 is made of carbon steel, so that the gasket 7 has certain strength, and the device can be suitable for bearings with a certain range of bearing inner diameters through the arrangement of the gasket 7.
The device has been tested in a small range in part of power plants, and has been used for carrying out dismounting experiments on bearings of devices such as heating systems, industrial water systems, domestic water systems, condensate systems, vacuum pumping systems, medium-sized and small-sized pump sets fans of most systems such as fuel oil and ash conveying systems in the trial process, so that the device has good trial conditions and better universality. Meanwhile, the damage of the bearing is detected after the disassembly is finished, the damage condition is not found, and the damage of the shaft is not found. The trial situation shows that most of coupling devices used in the daily industrial field of the bearing can be tested, and meanwhile, the bearing can be used after being amplified in size.
The working mode is as follows:
during installation, the first disc body 2 is fixed on one side, close to the equipment, of the bearing 6, then a proper gasket 7 is selected, the gasket 7 and the first disc body 2 are fixed through the groove 8 and the bump 9, the second disc body 2 is connected with the first disc body 2 through the pull rod 4, and the jack 5 is jacked against one end of the pump shaft 1. After the mounting is finished, the relative positions of the four pull rods 4, the first disc body 2 and the second disc body 3 are adjusted, so that the central holes of the first disc body 2 and the second disc body 3 are basically superposed with the pump shaft 1, and the positions of the four pull rods 4 on the first disc body 2 to the center of the pump shaft 1 are basically the same and are as close to the bearing 6 as possible. After all the adjustment work is finished, the bearing 6 is jacked up by the jack 5, and the first disc body 2 is pulled out of the pump shaft 1, so that the disassembly work of the bearing 6 is finished.
The utility model discloses a bearing extracting tool can realize the dismantlement of the middle-size and small-size bearing of the overwhelming majority of current, because even atress when dismantling, protection bearing that can be fine takes place that the local atress of bearing is too big to cause the deformation. Meanwhile, due to the introduction of the jack, the labor is saved greatly compared with the conventional three-jaw puller during disassembly, and because the jack does not move relative to the shaft during disassembly, the damage of the shaft head and the fact that the shaft head is damaged and thickened, the disassembly is tighter and tighter, and even the shaft head is damaged and cannot be pulled out are well avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (7)

1. The utility model provides a specialized tool is dismantled to minor diameter bearing, its characterized in that, includes first disk body, second disk body, pull rod, first disk body is installed in one side that the bearing is close to equipment, be provided with the gasket between first disk body and the bearing, the surface that first disk body is close to bearing one side is equipped with the recess, one side that the gasket is close to first disk body is equipped with the lug, through recess and lug fixed mounting between gasket and the first disk body, the second disk body is through a plurality of pull rods and first disk body fixed connection, one side that the second disk body is close to the bearing is supported and is equipped with ejection mechanism, ejection mechanism supports and establishes the one side at the equipment pump shaft.
2. The special tool for disassembling the small-diameter bearing of claim 1, wherein the number of the pull rods is four.
3. The special tool for disassembling the small-diameter bearing of claim 2, wherein the outer surfaces of the plurality of pull rods are provided with threads, and the pull rods are connected with the first disc body and the second disc body through bolts.
4. The special tool for disassembling the small-diameter bearing of claim 1, wherein the second disc body comprises a first splicing sheet and a second splicing sheet, a connecting piece is arranged on the first splicing sheet, and the second splicing sheet is fixedly connected with the first splicing sheet through the connecting piece.
5. The special tool for disassembling the small-diameter bearing as claimed in claim 1, wherein the ejection mechanism is a jack.
6. The special tool for disassembling the small-diameter bearing according to claim 1, wherein the gasket comprises two semicircular gaskets with the same shape, and the outer diameter of the gasket is the same as the outer diameter of the bearing.
7. The special tool for disassembling the small-diameter bearing of any one of claims 1, 2, 3 and 6, wherein the gasket and the plurality of pull rods are made of carbon steel.
CN201920811892.1U 2019-05-31 2019-05-31 Special tool for disassembling small-diameter bearing Active CN210909828U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920811892.1U CN210909828U (en) 2019-05-31 2019-05-31 Special tool for disassembling small-diameter bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920811892.1U CN210909828U (en) 2019-05-31 2019-05-31 Special tool for disassembling small-diameter bearing

Publications (1)

Publication Number Publication Date
CN210909828U true CN210909828U (en) 2020-07-03

Family

ID=71347133

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920811892.1U Active CN210909828U (en) 2019-05-31 2019-05-31 Special tool for disassembling small-diameter bearing

Country Status (1)

Country Link
CN (1) CN210909828U (en)

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