CN201194359Y - Motor bearing apparatus special for beveled wheel compressor - Google Patents
Motor bearing apparatus special for beveled wheel compressor Download PDFInfo
- Publication number
- CN201194359Y CN201194359Y CNU2008200361014U CN200820036101U CN201194359Y CN 201194359 Y CN201194359 Y CN 201194359Y CN U2008200361014 U CNU2008200361014 U CN U2008200361014U CN 200820036101 U CN200820036101 U CN 200820036101U CN 201194359 Y CN201194359 Y CN 201194359Y
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- CN
- China
- Prior art keywords
- bearing
- rotor
- deep groove
- groove ball
- 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 - Fee Related
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Abstract
The utility model relates to a motor bearing device special for a helical gear compressor, specifically to a bearing device suitable for helical gear connection. The utility model is characterized in that the inner cover of the bearing is sleeved on a rotor, the inner ring of a cylindrical roller bearing is sleeved on the bearing retainer of the rotor; the outer ring of the cylindrical roller bearing is put into the bearing house of an end cover; and a fuel slinger is sleeved on the rotor and then equipped with a shaft fixer and a bearing outer cover. Since the motor drive end of the helical gear connection in compressor industry is a cylindrical roller bearing, the dynamic load rating is two times more than that of a deep groove ball bearing having the same size, the service life of the cylindrical roller bearing is longer than that of a deep groove ball bearing, being more than 10 times longer than that of a deep groove ball bearing, for some motor, the service life of the cylindrical roller bearing is more than 15 times than that of a deep groove ball bearing. The device can operate normally under large radial force action, the temperature rise is low, and the whole motor is not easy to burnout.
Description
Technical field
The utility model relates to a kind of motor bearing device especially for helical gear compressor, specifically for adapting to the bearing arrangement that helical gear connects.
Background technology
In prior art, the drive end axle bearing assembly of existing Y series, Y2 series threephase asynchronous mainly is made up of rotor, bearing exterior and interior cover, end cap and deep groove ball bearing.Bearing has been selected deep groove ball bearing for use, and this bearing life need reach more than the 10000h.Under usual condition, this bearing is bearing axial thrust and less radial pull, calculates through bearing life, and deep groove ball bearing just can satisfy.In order to reduce the rotor axial play bearing is produced injury, be provided with bearing locking device at anti-drive end.Thereby effectively reduce motor oscillating and noise axially applying precompression again, good result is also arranged prolonging bearing life.Yet the bearing of supporting motor-driven end on the compressor that helical gear connects has born huge radial load, and frictional force increases suddenly.Calculate through bearing life, deep groove ball bearing is owing to be a contact, and long-time running back heating easily burns out, and the life-span is far smaller than 10000h, thereby can have influence on whole motor properties.Bearing burns out and can cause bending shaft or fracture, even whole burn-down of electric motor.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thereby a kind of motor bearing device especially for helical gear compressor is provided, and can adapt in that have under the bigger radial load effect still can operate as normal, and temperature rise is lower, and bearing can obtain guarantee useful life.
Main solution of the present utility model is achieved in that
The utility model comprises rotor, bearing end cover, end cap, axle card, disc, internal bearing cover, and feature is that internal bearing cover is sleeved on the rotor, and the inner ring of cylinder roller bearing is sleeved on the bearing guard of rotor; Packed in the outer ring of cylinder roller bearing again in the bearing chamber of end cap; Disc is sleeved on back installation shaft card on the rotor, and bearing end cover is installed.
Compared with the prior art the utility model has the following advantages:
Because the motor-driven end that compressor industry helical gear connects is selected cylinder roller bearing for use, its dynamic load rating will be that the twice of deep groove ball bearing dynamic load rating of former same specification size is many, the life-span of cylinder roller bearing is also greater than deep groove ball bearing simultaneously, bearing useful life will be more than 10 times of former deep groove ball bearing, the part motor will be former employing deep groove ball bearing more than 15 times; And can adapt in that have under the bigger radial load effect still can operate as normal, temperature rise is lower, and whole motor is difficult for burning.
Description of drawings
Fig. 1 is the utility model helical gear motor drive end bearing apparatus structure schematic diagram.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
Shown in Figure 1: as to comprise rotor 1, V-shaped seal ring 2, bearing end cover 3, end cap 4, axle card 5, disc 6, cylinder roller bearing 7, internal bearing cover 8 etc.
The utility model is enclosed within internal bearing cover 8 on the rotor 1 earlier, is sleeved on the bearing guard of rotor 1 after the inner ring heating with cylinder roller bearing 7.Again in the outer ring bearing chamber of knocking in end cap 4 gently with cylinder roller bearing 7.After treating that rotor 1 is filled in stator, the end cap that has cylinder roller bearing is installed on the stator, this moment, cylinder roller bearing 7 Internal and external cycles alignd substantially.With the installation screw tightening of front end housing, again with disc 6 shrink-ons on rotor 1, by last axle card 5.First-class lubricating grease is installed bearing end cover 3, tightens the outer connection screw that covers, and loads onto V-shaped seal ring 2, and whole assembling is just finished.
Because the motor-driven end that compressor industry helical gear connects is selected cylinder roller bearing for use, the stuck bearing outer ring of bearing exterior and interior cover, bearing inner race shaft block ring axial restraint is cancelled pretightning force (promptly cancelling wavy spring) simultaneously.Anti-drive end still adopts the deep groove ball bearing axial location, bearing inner race back-up ring axial restraint.Such structure is because the shaft extension end adopts cylinder roller bearing, its dynamic load rating will be that the twice of deep groove ball bearing dynamic load rating of former same specification size is many, the life formula index of cylinder roller bearing is also greater than deep groove ball bearing simultaneously, pass through detailed calculated, basic rating life will be more than 10 times of former deep groove ball bearing, the part motor will be former deep groove ball bearing more than 15 times.
Claims (1)
1. motor bearing device especially for helical gear compressor, comprise rotor (1), bearing end cover (3), end cap (4), axle card (5), disc (6), internal bearing cover (8), it is characterized in that internal bearing cover (8) is sleeved on the rotor (1), the inner ring of cylinder roller bearing (7) is sleeved on the bearing guard of rotor (1); Packed in the outer ring of cylinder roller bearing (7) again in the bearing chamber of end cap (4); Disc (6) is sleeved on the rotor (1) installation shaft card (5) again, and bearing end cover (3) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200361014U CN201194359Y (en) | 2008-04-30 | 2008-04-30 | Motor bearing apparatus special for beveled wheel compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200361014U CN201194359Y (en) | 2008-04-30 | 2008-04-30 | Motor bearing apparatus special for beveled wheel compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201194359Y true CN201194359Y (en) | 2009-02-11 |
Family
ID=40393891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200361014U Expired - Fee Related CN201194359Y (en) | 2008-04-30 | 2008-04-30 | Motor bearing apparatus special for beveled wheel compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201194359Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751808A (en) * | 2012-07-11 | 2012-10-24 | 无锡市中达电机有限公司 | Motor bearing mechanism specially used for compressor |
-
2008
- 2008-04-30 CN CNU2008200361014U patent/CN201194359Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751808A (en) * | 2012-07-11 | 2012-10-24 | 无锡市中达电机有限公司 | Motor bearing mechanism specially used for compressor |
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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: 20090211 |