CN202374096U - Sealing structure for motor bearing - Google Patents
Sealing structure for motor bearing Download PDFInfo
- Publication number
- CN202374096U CN202374096U CN2011205357591U CN201120535759U CN202374096U CN 202374096 U CN202374096 U CN 202374096U CN 2011205357591 U CN2011205357591 U CN 2011205357591U CN 201120535759 U CN201120535759 U CN 201120535759U CN 202374096 U CN202374096 U CN 202374096U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- bearing
- ring
- annular groove
- sealing flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a sealing structure for a motor bearing, which comprises a rotating shaft, wherein the rotating shaft is provided with a bearing; an inner ring of the bearing is sleeved on the rotating shaft, and an outer ring is arranged inside an end cover; two side end surfaces of the end cover are respectively provided with an inner cover and an outer cover; the surface of the inner cover, which is close to the rotating shaft, is provided with a first labyrinth slot; the surface of the outer cover, which is close to the rotating shaft, is provided with a second labyrinth slot; the rotating shaft is provided with a shaft shoulder corresponding to the inner cover, and the shaft shoulder is provided with a first circular groove in the axial direction; the inner cover is integrally provided with a first sealing flange; the first sealing flange stretches into the first circular groove and is spaced to the inner surface of the first circular groove; the outer cover is provided with a second circular groove corresponding to the bearing; a retainer ring is sleeved on the rotating shaft on the outer end surface of the bearing; the middle part of the retainer ring is provided with a second sealing flange; and the second sealing flange stretches into the second circular groove and is spaced to the inner surface of the second circular groove. The sealing structure for the motor bearing has a good sealing effect and can avoid the leakage of lubricating grease.
Description
Technical field
The utility model relates to a kind of hermetically-sealed construction, particularly relates to a kind of structure that is used for the sealed electric-motor bearing.
Background technology
In the technology, the hermetically-sealed construction of bearing is now: two axial unidirectional maze troughs are processed in closing between internal bearing cover, bearing end cover and rotating shaft on the face, utilize the air pressure in the rotary course to reach sealing effectiveness.But the sealing effectiveness of this hermetically-sealed construction is relatively poor, is easy to generate the problem that bearing grease leaks.
Therefore those skilled in the art are devoted to develop a kind of motor bearings hermetically-sealed construction of good sealing effect.
The utility model content
Because the above-mentioned defective of prior art, the utility model technical problem to be solved provides a kind of motor bearings hermetically-sealed construction of good sealing effect.
For realizing above-mentioned purpose, the utility model provides a kind of motor bearings hermetically-sealed construction, comprises rotating shaft; Said rotating shaft is provided with bearing; The inner ring of said bearing is sleeved in the said rotating shaft, and the outer ring is arranged in the end cap; The both sides end face of said end cap is respectively arranged with inner cap and enclosing cover; The face that closes on of said inner cap and said rotating shaft is provided with first maze trough; The face that closes on of said enclosing cover and said rotating shaft is provided with second maze trough;
The corresponding said inner cap of said rotating shaft place is provided with the shaft shoulder, and this shaft shoulder place is provided with first annular groove vertically; Cover in said and be wholely set first sealing flange; Said first sealing flange stretches in said first annular groove, and is provided with at interval with the inner surface of said first annular groove;
The corresponding said bearing of said enclosing cover place is provided with second annular groove; Said rotating shaft is set with back-up ring at the place, outer face that is positioned at said bearing; The middle part of said back-up ring is provided with second sealing flange; Said second sealing flange stretches in said second annular groove, and is provided with at interval with the inner surface of said second annular groove.
Preferable, said first sealing flange and said first annular groove spacing distance vertically are greater than radially spacing distance; Said second sealing flange and said second annular groove spacing distance vertically are greater than radially spacing distance.
Preferable, the outside of said back-up ring radially is provided with groove along said rotating shaft.
Preferable, being provided with oil scraper ring between the outer ring of said enclosing cover and said bearing, said oil scraper ring and said back-up ring are provided with at interval.
The beneficial effect of the utility model is: the utility model good sealing effect, avoided the leakage of bearing lubrication grease.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the partial enlarged drawing at I place among Fig. 1.
Fig. 3 is the partial enlarged drawing at II place among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Like Fig. 1, Fig. 2 and shown in Figure 3, a kind of motor bearings hermetically-sealed construction comprises rotating shaft 1, and rotating shaft 1 is provided with bearing 2.The inner ring of bearing 2 is sleeved in the rotating shaft 1, and the outer ring is arranged in the end cap 3.The both sides end face of end cap 3 is respectively arranged with inner cap 4 and enclosing cover 5, and inner cap 4 is provided with first maze trough 6 with the face that closes on of rotating shaft 1, and enclosing cover 5 is provided with second maze trough 7 with the face that closes on of rotating shaft 1.
Rotating shaft 1 corresponding inner cap 4 places are provided with the shaft shoulder, and this shaft shoulder place is provided with first annular groove 8 vertically.Be wholely set first sealing flange, 9, the first sealing flanges 9 on the inner cap 4 and stretched in first annular groove 8, and be provided with at interval with the inner surface of first annular groove 8.
Enclosing cover 5 corresponding bearings 2 places are provided with second annular groove 10.Rotating shaft 1 is set with back-up ring 11 at the outer face place that is positioned at bearing 2, and the middle part of back-up ring 11 is provided with second sealing flange, 12, the second sealing flanges 12 and stretches in second annular groove 10, and is provided with at interval with the inner surface of second annular groove 10.The outside of back-up ring 11 radially is provided with groove 13 along rotating shaft 1.
First sealing flange 9 and first annular groove 8 spacing distance vertically be greater than radially spacing distance, and second sealing flange 12 and second annular groove 10 spacing distance vertically are greater than radially spacing distance.
Be provided with oil scraper ring 14 between the outer ring of enclosing cover 5 and bearing 2, oil scraper ring 14 is provided with back-up ring 11 at interval.
The utility model is processed two axial unidirectional maze troughs except that closing between internal bearing cover 4, bearing end cover 5 and rotating shaft 1 on the face; Also between internal bearing cover 4 and rotating shaft 1, processed two-way maze trough radially; Between bearing end cover 5 and back-up ring 11, processed two-way maze trough radially; And, solved the problem that bearing grease leaks because the setting of oil scraper ring 14 and groove 13 makes hermetically-sealed construction more perfect.
More than describe the preferred embodiment of the utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technical staff in the art according to the design of the utility model on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection range by claims.
Claims (4)
1. a motor bearings hermetically-sealed construction comprises rotating shaft (1); Said rotating shaft (1) is provided with bearing (2); The inner ring of said bearing (2) is sleeved in the said rotating shaft (1), and the outer ring is arranged in the end cap (3); The both sides end face of said end cap (3) is respectively arranged with inner cap (4) and enclosing cover (5); Said inner cap (4) is provided with first maze trough (6) with the face that closes on of said rotating shaft (1); Said enclosing cover (5) is provided with second maze trough (7) with the face that closes on of said rotating shaft (1); It is characterized in that:
The corresponding said inner cap of said rotating shaft (1) (4) locates to be provided with the shaft shoulder, and this shaft shoulder place is provided with first annular groove (8) vertically; Be wholely set first sealing flange (9) on the said inner cap (4); Said first sealing flange (9) stretches in said first annular groove (8), and is provided with at interval with the inner surface of said first annular groove (8);
The corresponding said bearing of said enclosing cover (5) (2) locates to be provided with second annular groove (10); Said rotating shaft (1) is set with back-up ring (11) at the place, outer face that is positioned at said bearing (2); The middle part of said back-up ring (11) is provided with second sealing flange (12); Said second sealing flange (12) stretches in said second annular groove (10), and is provided with at interval with the inner surface of said second annular groove (10).
2. motor bearings hermetically-sealed construction as claimed in claim 1 is characterized in that: said first sealing flange (9) and said first annular groove (8) spacing distance vertically are greater than radially spacing distance; Said second sealing flange (12) and said second annular groove (10) spacing distance vertically are greater than radially spacing distance.
3. motor bearings hermetically-sealed construction as claimed in claim 1 is characterized in that: the outside of said back-up ring (11) radially is provided with groove (13) along said rotating shaft (1).
4. like claim 1 or 2 or 3 described motor bearings hermetically-sealed constructions, it is characterized in that: be provided with oil scraper ring (14) between the outer ring of said enclosing cover (5) and said bearing (2); Said oil scraper ring (14) is provided with said back-up ring (11) at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205357591U CN202374096U (en) | 2011-12-20 | 2011-12-20 | Sealing structure for motor bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205357591U CN202374096U (en) | 2011-12-20 | 2011-12-20 | Sealing structure for motor bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374096U true CN202374096U (en) | 2012-08-08 |
Family
ID=46597787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205357591U Expired - Fee Related CN202374096U (en) | 2011-12-20 | 2011-12-20 | Sealing structure for motor bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202374096U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746500A (en) * | 2013-12-19 | 2014-04-23 | 重庆赛力盟电机有限责任公司 | High-speed motor bearing sealing device |
| CN106026501A (en) * | 2016-08-13 | 2016-10-12 | 中车永济电机有限公司 | Novel motor end cover of full-closed structure |
-
2011
- 2011-12-20 CN CN2011205357591U patent/CN202374096U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746500A (en) * | 2013-12-19 | 2014-04-23 | 重庆赛力盟电机有限责任公司 | High-speed motor bearing sealing device |
| CN106026501A (en) * | 2016-08-13 | 2016-10-12 | 中车永济电机有限公司 | Novel motor end cover of full-closed structure |
| CN106026501B (en) * | 2016-08-13 | 2018-02-16 | 中车永济电机有限公司 | A kind of full-enclosed structure electric motor end cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20131220 |