CN202856510U - Sealing structure of motor shaft through portion - Google Patents
Sealing structure of motor shaft through portion Download PDFInfo
- Publication number
- CN202856510U CN202856510U CN 201220549719 CN201220549719U CN202856510U CN 202856510 U CN202856510 U CN 202856510U CN 201220549719 CN201220549719 CN 201220549719 CN 201220549719 U CN201220549719 U CN 201220549719U CN 202856510 U CN202856510 U CN 202856510U
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- CN
- China
- Prior art keywords
- shaft
- bearing
- end cover
- waterproof
- motor
- 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 - Lifetime
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- Motor Or Generator Frames (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a sealing structure of a motor shaft through portion, which comprises a shaft, a bearing and a bearing outer cover, wherein a surface, which is away from the bearing, of the bearing outer cover is provided with a circular groove which is concentric and communicated with a shaft hole; a shaft surface oil seal is embedded in the circular groove; the shaft surface oil seal is in interference fit with the shaft; a water throwing ring and a waterproof end cover are fixedly arranged in sequence on the shaft at the outer side of the bearing outer cover; and a labyrinth type crooked waterproof structure is adopted between the water throwing ring and the bearing outer cover. According to the utility model, the shaft surface oil seal is adopted, an inner cavity of the shaft surface oil seal is fully coated by grease, and the shaft surface oil seal is attached to the bearing outer cover, thereby blocking splashed water out of a bearing chamber; secondly, the waterproof performance is increased through additionally arranging the water throwing ring, and the labyrinth type crooked waterproof structure is adopted between the water throwing ring and the bearing outer cover, thereby further improving the waterproof performance; and moreover, the additionally arranged waterproof end cover can cover the whole shaft through portion, and alleviates direct impact imposed by high-pressure water flow on the shaft through portion. The sealing structure disclosed by the utility model is simple, and easy to implement.
Description
Technical field
The utility model relates to a kind of hermetically-sealed construction, relates in particular to a kind of hermetically-sealed construction of motor the through position of the shaft.
Background technology
Motor is widely used in various industries as the power source of electrical appliance or various machineries.Because motor application is in different places, operational environment is comparatively abominable sometimes; As be applied in steel mill's industry for the roller-way variable frequency motor of driving work and transmission roller channel, in the transmission course of rolling steel billet, the cooling procedure of steel billet will produce a large amount of high-temperature vapors and High-Pressure Water, this certainly will require roller-way variable frequency motor that higher classification of waterproof will be arranged, and motor will reach 6 grades of waterproof requirements at least.The high energy of common electric machine reaches the requirement of 5 grades of waterproof, if the motor water resistance is excessively low, high-temperature vapor or a small amount of water will enter motor internal, cause the motor winding to make moist, and then cause winding inter-turn or phase fault, and even winding, thus the normal operation of production line affected.
At present, the mating surface gap between the parts of motor housing easily intakes; Wherein, the through position of the shaft is the easiliest to intake because high pressure dabbles, the hermetically-sealed construction of existing common electric machine the through position of the shaft as shown in Figure 1, this kind hermetically-sealed construction can meet the demands in common place, but under some rugged environments, high temperature dabble and the bump of superheated vapor under, water can enter in the motor in the space between bearing end cover 11 and axle 12, cause stator winding to burn, have certain potential safety hazard.
The utility model content
The purpose of this utility model is for the problems referred to above, and a kind of hermetically-sealed construction of motor the through position of the shaft is provided, and to solve the hermetically-sealed construction poor sealing performance of existing motor the through position of the shaft, water resistance is poor, has the problem of potential safety hazard.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of hermetically-sealed construction of motor the through position of the shaft, comprise axle, bearing and bearing end cover, offer cannelure concentric with axis hole and that be communicated with on the face of described bearing end cover away from bearing, described cannelure has been embedded in the axial plane oil sealing, described axial plane oil sealing and axle interference fit, the outside that is positioned at bearing end cover on the described axle is fixedly installed throw rijng, waterproof end shield successively, adopts the bent road of labyrinth type waterproof construction between described throw rijng and the bearing end cover.
Further, described throw rijng and axle interference fit.
Further, described axial plane oil sealing comprises metal-back and rubber ring, and described metal-back is fixedly connected with rubber ring, and itself and axle interference fit, and described rubber ring and bearing end cover are fitted.
Further, described metal-back is circular ring, and hoop is furnished with groove on it, is provided with the location division on the described rubber ring, matches with groove in described location division.
The beneficial effects of the utility model are, the hermetically-sealed construction of described motor the through position of the shaft is by adopting the axial plane oil sealing, and axial plane oil sealing inner chamber is coated with full lubricating grease, and it fits with bearing end cover, will dabble gear outside bearing chamber; Secondly, by increasing throw rijng, increase water resistance, and adopt the bent road of labyrinth type waterproof construction between throw rijng and the bearing end cover, further improved water resistance; In addition, the waterproof end shield of setting up can cover whole the through position of the shaft, relaxes High-Pressure Water to the direct impact of the through position of the shaft, and is simple in structure, is easy to realize.
Description of drawings
Fig. 1 is the schematic diagram of the hermetically-sealed construction of existing motor the through position of the shaft;
Fig. 2 is the schematic diagram of the hermetically-sealed construction of the utility model motor the through position of the shaft.
Among the figure:
11, bearing end cover; 12, axle; 21, bearing end cover; 22, axle; 23, axial plane oil sealing; 24, throw rijng; 25, waterproof end shield; 26, bearing.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Please refer to shown in Figure 2, in the present embodiment, a kind of hermetically-sealed construction of motor the through position of the shaft, comprise axle 22, bearing 26 and bearing end cover 21, offer cannelure concentric with axis hole and that be communicated with on the face of described bearing end cover 21 away from bearing 26, described cannelure has been embedded in axial plane oil sealing 23, described axial plane oil sealing 23 comprises metal-back and rubber ring, described metal-back is circular ring, hoop is furnished with groove on it, being provided with the location division on the described rubber ring, matches with groove in described location division, described metal-back and axle 22 interference fit, described rubber ring and bearing end cover 21 are fitted, the outside that is positioned at bearing end cover 21 on the described axle 22 is fixedly installed throw rijng 24 successively, waterproof end shield 25, described throw rijng 24 and axle 22 interference fit, and its with bearing end cover 21 between adopt labyrinth type song road waterproof construction.
The utility model is simple in structure, be easy to realize, by adopting axial plane oil sealing 23 and setting up throw rijng 24, waterproof end shield 25, effectively formed the protection of three roads, improved the water resistance of motor the through position of the shaft, avoid high-temperature steam or water to enter motor internal, improved the classification of waterproof of motor.
Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model is not limited by above-described embodiment; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various variations and change, and these variations and change all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the hermetically-sealed construction of a motor the through position of the shaft, comprise axle, bearing and bearing end cover, it is characterized in that: offer cannelure concentric with axis hole and that be communicated with on the face of described bearing end cover away from bearing, described cannelure has been embedded in the axial plane oil sealing, described axial plane oil sealing and axle interference fit, the outside that is positioned at bearing end cover on the described axle is fixedly installed throw rijng, waterproof end shield successively, adopts the bent road of labyrinth type waterproof construction between described throw rijng and the bearing end cover.
2. the hermetically-sealed construction of motor the through position of the shaft according to claim 1 is characterized in that: described throw rijng and axle interference fit.
3. the hermetically-sealed construction of motor the through position of the shaft according to claim 1, it is characterized in that: described axial plane oil sealing comprises metal-back and rubber ring, and described metal-back is fixedly connected with rubber ring, and itself and axle interference fit, described rubber ring and bearing end cover are fitted.
4. the hermetically-sealed construction of motor the through position of the shaft according to claim 3, it is characterized in that: described metal-back is circular ring, and hoop is furnished with groove on it, is provided with the location division on the described rubber ring, match with groove in described location division.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549719 CN202856510U (en) | 2012-10-24 | 2012-10-24 | Sealing structure of motor shaft through portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549719 CN202856510U (en) | 2012-10-24 | 2012-10-24 | Sealing structure of motor shaft through portion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856510U true CN202856510U (en) | 2013-04-03 |
Family
ID=47987661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220549719 Expired - Lifetime CN202856510U (en) | 2012-10-24 | 2012-10-24 | Sealing structure of motor shaft through portion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047381A1 (en) * | 2019-09-09 | 2021-03-18 | 卧龙电气驱动集团股份有限公司 | Motor having double-sealing structure |
-
2012
- 2012-10-24 CN CN 201220549719 patent/CN202856510U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021047381A1 (en) * | 2019-09-09 | 2021-03-18 | 卧龙电气驱动集团股份有限公司 | Motor having double-sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |