CN205081613U - A antifriction bearing seal structure for motor - Google Patents
A antifriction bearing seal structure for motor Download PDFInfo
- Publication number
- CN205081613U CN205081613U CN201520828691.4U CN201520828691U CN205081613U CN 205081613 U CN205081613 U CN 205081613U CN 201520828691 U CN201520828691 U CN 201520828691U CN 205081613 U CN205081613 U CN 205081613U
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- bearing
- rolling bearing
- cover
- rotating shaft
- end cap
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses an antifriction bearing seal structure for motor, include the motor end cover, wear to locate pivot, the support of motor end cover are in the motor end cover with antifriction bearing between the pivot, fix just be located on the motor end cover the bearing enclosing cover in the antifriction bearing outside and fixing just be located on the motor end cover the inboard bearing inner cup of antifriction bearing, in the pivot fixed cover be equipped with one with bearing enclosing cover matched with disc, the disc with the bearing enclosing cover forms labyrinth seal circle structure jointly. The utility model discloses can reach IP55's protection level to protection level can not reduce because of the operation of motor.
Description
Technical field
The utility model relates to technical field of motors, is specifically related to a kind of rolling bearing sealing structure for motor.
Background technology
With reference to shown in Fig. 1, in conventional art, the rolling bearing sealing structure that motor uses, is close to bearing end cover with skeleton rotary shaft lip seal 7 and is fixed on bearing end cover, and convection cell and lubricating grease seal (as Fig. 1).But in the running of motor, sealing ring can be worn and torn gradually by the rotation of rotating shaft, the time has been grown and will reduce degree of protection.
Utility model content
The utility model object is: for the problems referred to above, and the utility model provides a kind of rolling bearing sealing structure for motor, improve degree of protection, and degree of protection can not reduce because of the operation of motor.
The technical solution of the utility model is: a kind of rolling bearing sealing structure for motor, comprise electric motor end cap, be arranged in the rotating shaft of described electric motor end cap, be supported on the rolling bearing between described electric motor end cap and described rotating shaft, to be fixed on described electric motor end cap and the bearing end cover be positioned at outside described rolling bearing, and to be fixed on described electric motor end cap and the internal bearing cover be positioned at inside described rolling bearing, in described rotating shaft, fixed cover is provided with a disc matched with described bearing end cover, described disc and described bearing end cover form labyrinth sealing coil structures jointly.
The utility model, on the basis of technique scheme, also comprises following preferred version:
The outside of described bearing end cover forms the first cannelure axially caved inward, and the first annular sleeve axially extended internally, the inner side of described disc forms the second cannelure of axially outwards depression, and axial outward extending second annular sleeve, described first annular sleeve stretches in described second cannelure, and there is between the first annular sleeve and the second cannelure the first radial clearance and the first end play, described second annular sleeve stretches in described first cannelure, and there is between the second annular sleeve and the first cannelure the second radial clearance and the second end play.
The diameter of axle of described rotating shaft is no more than 50mm, and described first radial clearance and the second radial clearance are 0.2 ~ 0.5mm, and described first end play and the second end play are 1.0 ~ 2.0mm.
The diameter of axle of described rotating shaft is greater than 50mm and is less than 200mm, and described first radial clearance and the second radial clearance are 0.3 ~ 0.9mm, and described first end play and the second end play are 1.5 ~ 5.0mm.
Described disc is that the mode of fixing with hot jacket is arranged in described rotating shaft.
Described bearing end cover is fixed by screws on described electric motor end cap.
The utility model has the advantages that: this rolling bearing sealing structure of the utility model is in actual application, disc is with rotating shaft synchronous rotary, coordinate the labyrinth sealing coil structures formed can reach the degree of protection of IP55 by disc and bearing end cover, and degree of protection can not reduce because of the operation of motor.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the schematic diagram of conventional rolling bearing hermetically-sealed construction;
Fig. 2 is the schematic diagram of rolling bearing sealing structure in the utility model embodiment;
Fig. 3 is the rolling bearing sealing structure schematic diagram with gap mark in the utility model embodiment;
Wherein: 1-electric motor end cap, 2-rotating shaft, 3-rolling bearing, 4-bearing end cover, 41-first cannelure, 42-first annular sleeve, 61-second cannelure, 62-second annular sleeve, 5-internal bearing cover, 6-disc, 7-skeleton rotary shaft lip seal, a1-first radial clearance, a2-second radial clearance, b1-first end play, b2-second end play.
Embodiment
Embodiment: Fig. 2 and Fig. 3 shows a specific embodiment of this rolling bearing sealing structure for motor of the utility model, identical with conventional art, it also comprises electric motor end cap 1, be arranged in the rotating shaft 2 (i.e. electric machine main shaft) of electric motor end cap, be supported on rolling bearing 3 between electric motor end cap 1 and rotating shaft 2, be fixed on electric motor end cap 1 and the bearing end cover 4 be positioned at outside rolling bearing 3 and being fixed on electric motor end cap 1 and the internal bearing cover 5 be positioned at inside rolling bearing 3.The conveniently assembling of rolling bearing 3, described electric motor end cap 1 can be arranged to by end cap body and be fixed on the structure that the bearing holder (housing, cover) on end cap body forms by we, and described rolling bearing 3 is supported between rotating shaft 2 and bearing holder (housing, cover).
The key improvements of the present embodiment is: in described rotating shaft 2, fixed cover is provided with a disc 6 matched with bearing end cover 4, and this disc 6 forms labyrinth sealing coil structures jointly with bearing end cover 4.
With reference to shown in Fig. 2, the specific constructive form of the labyrinth sealing coil structures formed is as follows:
The outside of bearing end cover 4 forms the first cannelure 41 axially caved inward and the first annular sleeve 42 axially extended internally.The inner side of disc 6 forms the second cannelure 61 of axially outwards depression and axial outward extending second annular sleeve 62.First annular sleeve 42 stretches in the second cannelure 61, and has the first radial clearance a1 and the first end play b1 between the first annular sleeve 42 and the second cannelure 61.Second annular sleeve 62 stretches in the first cannelure 41, and has the second radial clearance a2 and the second end play b2 between the second annular sleeve 62 and the first cannelure 41.
The diameter of axle (diameter) of described rotating shaft 2 generally can not more than 200mm, designer finds: when the diameter of axle of rotating shaft 2 is greater than 0 and is less than 50mm (being namely no more than 50mm), described first radial clearance a1 and the second radial clearance a2 is 0.2 ~ 0.5mm, described first end play b1 and the second end play b2 is 1.0 ~ 2.0mm, and effect is better.When the diameter of axle of rotating shaft 2 is greater than 50mm and is less than 200mm, described first radial clearance a1 and the second radial clearance a2 is 0.3 ~ 0.9mm, and described first end play b1 and the second end play b2 is 1.5 ~ 5.0mm, and effect is better.
During work, rotating shaft 2 drives disc 6 synchronous rotary, and disc 6 and bearing end cover 4 coordinate the labyrinth sealing coil structures formed can reach the degree of protection of IP55, and degree of protection can not reduce because of the operation of motor.
In this example, described disc 6 is that the mode of fixing with hot jacket is arranged in rotating shaft 2, and described bearing end cover 4 is fixed by screws on electric motor end cap 1.
Certainly, above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to people can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, all should be encompassed within protection range of the present utility model.
Claims (7)
1. the rolling bearing sealing structure for motor, comprise electric motor end cap (1), be arranged in the rotating shaft (2) of described electric motor end cap, be supported on the rolling bearing (3) between described electric motor end cap (1) and described rotating shaft (2), be fixed on described electric motor end cap (1) to go up and the bearing end cover (4) being positioned at described rolling bearing (3) outside, and it is upper and be positioned at the internal bearing cover (5) of described rolling bearing (3) inner side to be fixed on described electric motor end cap (1), it is characterized in that: the upper fixed cover of described rotating shaft (2) is provided with a disc (6) matched with described bearing end cover (4), described disc (6) and described bearing end cover (4) form labyrinth sealing coil structures jointly.
2. the rolling bearing sealing structure for motor according to claim 1, it is characterized in that: the outside of described bearing end cover (4) forms the first cannelure (41) axially caved inward, and the first annular sleeve (42) axially extended internally, the inner side of described disc (6) forms second cannelure (61) of axially outwards depression, and axial outward extending second annular sleeve (62), described first annular sleeve (42) is stretched in described second cannelure (61), and there is between the first annular sleeve (42) and the second cannelure (61) the first radial clearance (a1) and the first end play (b1), described second annular sleeve (62) is stretched in described first cannelure (41), and there is between the second annular sleeve (62) and the first cannelure (41) the second radial clearance (a2) and the second end play (b2).
3. the rolling bearing sealing structure for motor according to claim 2, it is characterized in that: the diameter of axle of described rotating shaft (2) is no more than 50mm, described first radial clearance (a1) and the second radial clearance (a2) are 0.2 ~ 0.5mm, and described first end play (b1) and the second end play (b2) are 1.0 ~ 2.0mm.
4. the rolling bearing sealing structure for motor according to claim 2, it is characterized in that: the diameter of axle of described rotating shaft (2) is greater than 50mm and is less than 200mm, described first radial clearance (a1) and the second radial clearance (a2) are 0.3 ~ 0.9mm, and described first end play (b1) and the second end play (b2) are 1.5 ~ 5.0mm.
5. the rolling bearing sealing structure for motor according to claim 1 or 2 or 3 or 4, is characterized in that: described disc (6) is arranged in described rotating shaft (2) in the mode that hot jacket is fixing.
6. the rolling bearing sealing structure for motor according to claim 1 or 2 or 3 or 4, is characterized in that: described bearing end cover (4) is fixed by screws on described electric motor end cap (1).
7. the rolling bearing sealing structure for motor according to claim 1 or 2 or 3 or 4, it is characterized in that: described electric motor end cap (1) comprises end cap body and is fixed on bearing holder (housing, cover) on end cap body, and described rolling bearing (3) is supported between described bearing holder (housing, cover) and described rotating shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520828691.4U CN205081613U (en) | 2015-10-23 | 2015-10-23 | A antifriction bearing seal structure for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520828691.4U CN205081613U (en) | 2015-10-23 | 2015-10-23 | A antifriction bearing seal structure for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081613U true CN205081613U (en) | 2016-03-09 |
Family
ID=55433987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520828691.4U Active CN205081613U (en) | 2015-10-23 | 2015-10-23 | A antifriction bearing seal structure for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205081613U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681808A (en) * | 2017-11-17 | 2018-02-09 | 卧龙电气集团股份有限公司 | A kind of high power dust explosion protection motor of coal crusher |
| CN109687625A (en) * | 2019-02-25 | 2019-04-26 | 神驰机电股份有限公司 | A kind of waterproof and breathable rotor assembly |
-
2015
- 2015-10-23 CN CN201520828691.4U patent/CN205081613U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681808A (en) * | 2017-11-17 | 2018-02-09 | 卧龙电气集团股份有限公司 | A kind of high power dust explosion protection motor of coal crusher |
| CN107681808B (en) * | 2017-11-17 | 2024-05-28 | 卧龙电气南阳防爆集团股份有限公司 | High-power dust explosion-proof coal mill motor |
| CN109687625A (en) * | 2019-02-25 | 2019-04-26 | 神驰机电股份有限公司 | A kind of waterproof and breathable rotor assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |