CN202364037U - Thrust cap structure of flame-proof motor having sliding bearing - Google Patents
Thrust cap structure of flame-proof motor having sliding bearing Download PDFInfo
- Publication number
- CN202364037U CN202364037U CN2011204509756U CN201120450975U CN202364037U CN 202364037 U CN202364037 U CN 202364037U CN 2011204509756 U CN2011204509756 U CN 2011204509756U CN 201120450975 U CN201120450975 U CN 201120450975U CN 202364037 U CN202364037 U CN 202364037U
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- China
- Prior art keywords
- sleeve
- motor
- sliding bearing
- ring
- pushing cover
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- Expired - Lifetime
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Abstract
The utility model provides a thrust cap structure of a flame-proof motor having a sliding bearing. The thrust cap structure of the flame-proof motor having the sliding bearing includes a thrust cap fixed on an end cover, a retainer ring and an outer cover installed together with the thrust cap, a sleeve and a positioning key installed on a shaft and capable of rotating along with the shaft. An empty cavity is formed between the retainer ring and the outer cover. The sleeve is disposed in the empty cavity between the retainer ring and the outer cover, thereby forming curving path sealing. High temperature gas in the cooling motor is cooled fully. The sleeve is made of copper material that does not easy to generate sparks, thereby preventing explosion in the motor from spreading to a mixed explosive mixture environment outside the motor. Thus, the flame-proof effect of the motor is realized.
Description
Technical field
The utility model relates to explosion separation motor labyrinth seal explosion separation structure, relates in particular to a kind of explosion separation motor pushing cover structure of using sliding bearing.
Background technology
Use the explosion separation motor of sliding bearing,, rely on axle and bearing to be fitted to each other face as flame proof faying face and unreliable because sliding bearing self is installed complicated and is prone to hidden danger such as leakage of oil.If support function and flame proof functional separation, sliding bearing only plays a supportive role, realize that by the pushing cover structure flame proof effect then can perfectly solve this difficult problem.Structurally, the pushing cover structure is installed on the end cap, places the support inner chamber, compact conformation and can not increase the axial length of motor.
The utility model content
The problem that is difficult to realize flame proof to existing explosion separation motor sliding bearing and axle composition surface; The utility model provides a kind of sliding bearing explosion separation motor pushing cover structure; Can reliably realize the flame proof function, it is without hindrance to take into account smooth and easy rotation of rotor and axial endplay, and can not increase the motor axial length.
The technical scheme of the utility model is following:
A kind of sliding bearing explosion separation motor pushing cover structure comprises pushing cover, back-up ring, enclosing cover, sleeve and positioning key; Pushing cover is fixed on the electric motor end cap, and back-up ring and pushing cover cooperate, and enclosing cover and back-up ring put together on together, form cavity between enclosing cover and back-up ring; The cavity that sleeve places enclosing cover and back-up ring to form, sleeve and positioning key are installed on the axle.
Its further technical scheme is: said pushing cover is fixed on the electric motor end cap through hex bolts and spring washer.Said back-up ring is fixed on the pushing cover through hex bolts and spring washer.Said enclosing cover is fixed on the back-up ring through hex bolts and spring washer.Said sleeve is copper.Between said pushing cover and the sleeve, between back-up ring and the sleeve, have the gap between enclosing cover and the axle, said gap is greater than the electric machine rotor air gap.
The useful technique effect of the utility model is:
The utility model can overcome the problem that explosion separation motor sliding bearing self flame proof effect is difficult to realize, simplifies plain bearing arrangement, under the prerequisite that does not increase the motor axial length, realizes reliable flame proof, and it is without hindrance to take into account smooth and easy rotation of rotor and axial endplay.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
For enabling further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited about the utility model.
As shown in Figure 1, the utility model is the pushing cover structure of a kind of use on the sliding bearing explosion separation motor, comprises the securing member of pushing cover and electric motor end cap: hex bolts 1, spring washer 2; Pushing cover 3; Back-up ring 4; The securing member of pushing cover and back-up ring: hex bolts 5, spring washer 6; The securing member of enclosing cover and back-up ring: hex bolts 7, spring washer 8; Enclosing cover 9; Sleeve 10; Positioning key 11.
Pushing cover 3 is fixed on the electric motor end cap 12, and back-up ring 4 cooperates with pushing cover 3, and enclosing cover 9 puts together on together with back-up ring 4, and 4 of enclosing cover 9 and back-up rings form cavity.The cavity that sleeve 10 places enclosing cover 9 and back-up ring 4 to form; Sleeve 10 can radially rotate in cavity and move axially; Sleeve 10 is installed on the axle 13 and can rotates with axle with positioning key 11, and positioning key 11 is fixed on the axle 13, and sleeve 10 axially can relatively move with axle 13.
Pushing cover 3 is fixed on the electric motor end cap 12 through hex bolts 1 and spring washer 2, and hex bolts 1 meets the flame proof relevant regulations with spring washer 2 and layout thereof.Back-up ring 4 cooperates with pushing cover 3 through hex bolts 5 and spring washer 6, and hex bolts 5 meets the flame proof relevant regulations with spring washer 6 and layout thereof.Enclosing cover 9 puts together on back-up ring 4 through hex bolts 7 and spring washer 8, and hex bolts 7 meets the flame proof relevant regulations with spring washer 8 and layout thereof.4 of enclosing cover 9 and back-up rings form cavity, and both meet the flame proof relevant regulations at composition surface length.
Between pushing cover 3 and the sleeve 10, between back-up ring 4 and the sleeve 10, between enclosing cover 9 and the axle 13, radially all have certain clearance, these radial clearances must be greater than air gap between electric machine rotor, guarantees that motor pushing cover in assembling process assembles not bear rotor weight.
The cavity that sleeve 10 places enclosing cover 9 and back-up ring 4 to form, sleeve 10 in this cavity axially, radially all removable: move axially smooth and easy rotation when guaranteeing that sleeve 10 rotates with axle, move radially and guarantee that pushing cover assembles not bear rotor weight.When sleeve 10 was in the axial limit position, between back-up ring 4 and the sleeve 10, gap and composition surface length between sleeve 10 and the enclosing cover 9 should meet the flame proof related request.Sleeve 10, back-up ring 4 and enclosing cover 9 triangular composition surfaces form labyrinth seal and realize the flame proof function.
Sleeve 10 is copper sleeve, and sleeve 10 is installed on the axle 13 with positioning key 11, by positioning key 11 radial locations and axially directed: radially can rotate with the axis, axially can on axle, move.13 on sleeve 10 and axle engage the face length degree and the gap meets the flame proof related request.The composition surface length of sleeve 10 and positioning key 11 should be able to guarantee that positioning key 11 all can reliable radial location and axially directed at sleeve 10 any axial locations.Positioning key 11 is fixed on the axle 13, plays radial location and axially directed effect.Under the location and guiding of positioning key 11; Can axially relatively move between sleeve 10 and axle 13, the positioning key 11; Limit axial displacement between sleeve 10 and the positioning key 11 should be greater than the axial movement value of motor shaft extension end sliding bearing permission; To displaced position, sleeve 10 all has contact-making surface to fit with positioning key 11 at the arbitrary axis of sleeve 10, guarantees that positioning key 11 all the time can be to sleeve 10 reliable axially directed and radial locations.
The erection sequence of the utility model is:
Be installed in back-up ring 4 on the pushing cover 3 with hex bolts 5 and spring washer 6 earlier; Be installed in pushing cover 3 on the end cap 12 with hex bolts 1 and spring washer 2 again; Positioning key 11 is installed on the armature spindle 13 of suit stator; Be installed to the end cap 12 that pushing cover 3, back-up ring 4 are housed on the electric machine stand; Be directed at cover sleeved 10 on the axle 13 with positioning key 11; Be installed in enclosing cover 9 on the back-up ring 4 with hex bolts 7 and spring washer 8.
The utility model is by said structure and step, adopts the labyrinth seal structure to realize reliable flame proof, and it is without hindrance to take into account smooth and easy rotation of rotor and axial endplay simultaneously, and is simple and compact for structure and do not increase motor length.
Above-described only is the preferred implementation of the utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite of the basic design that does not break away from the utility model, all should think to be included within the protection range of the utility model.
Claims (6)
1. a sliding bearing explosion separation motor pushing cover structure is characterized in that: comprise pushing cover (3), back-up ring (4), enclosing cover (9), sleeve (10) and positioning key (11); Pushing cover (3) is fixed on the electric motor end cap (12), and back-up ring (4) and pushing cover (3) cooperate, and enclosing cover (9) and back-up ring (4) put together on together, form cavity between enclosing cover (9) and back-up ring (4); The cavity that sleeve (10) places enclosing cover (9) and back-up ring (4) to form, sleeve (10) and positioning key (11) are installed on the axle (13).
2. according to the said sliding bearing explosion separation motor of claim 1 pushing cover structure, it is characterized in that: said pushing cover (3) is fixed on the electric motor end cap (12) through hex bolts (1) and spring washer (2).
3. according to the said sliding bearing explosion separation motor of claim 1 pushing cover structure, it is characterized in that: said back-up ring (4) is fixed on the pushing cover (3) through hex bolts (5) and spring washer (6).
4. according to the said sliding bearing explosion separation motor of claim 1 pushing cover structure, it is characterized in that: said enclosing cover (9) is fixed on the back-up ring (4) through hex bolts (7) and spring washer (8).
5. according to the said sliding bearing explosion separation motor of claim 1 pushing cover structure, it is characterized in that: said sleeve (10) is for copper.
6. according to the said sliding bearing explosion separation motor of claim 1 pushing cover structure; It is characterized in that: between said pushing cover (3) and the sleeve (10), between back-up ring (4) and the sleeve (10), have the gap between enclosing cover (9) and the axle (13), said gap is greater than the electric machine rotor air gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204509756U CN202364037U (en) | 2011-11-15 | 2011-11-15 | Thrust cap structure of flame-proof motor having sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204509756U CN202364037U (en) | 2011-11-15 | 2011-11-15 | Thrust cap structure of flame-proof motor having sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364037U true CN202364037U (en) | 2012-08-01 |
Family
ID=46575193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204509756U Expired - Lifetime CN202364037U (en) | 2011-11-15 | 2011-11-15 | Thrust cap structure of flame-proof motor having sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202364037U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403827A (en) * | 2011-11-15 | 2012-04-04 | 中电电机股份有限公司 | Sliding bearing explosion isolation push cover structure for motor |
-
2011
- 2011-11-15 CN CN2011204509756U patent/CN202364037U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403827A (en) * | 2011-11-15 | 2012-04-04 | 中电电机股份有限公司 | Sliding bearing explosion isolation push cover structure for motor |
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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 |
Granted publication date: 20120801 |
|
| CX01 | Expiry of patent term |