CN102522845B - Motor bearing apparatus with sleeve - Google Patents
Motor bearing apparatus with sleeve Download PDFInfo
- Publication number
- CN102522845B CN102522845B CN201110407192.4A CN201110407192A CN102522845B CN 102522845 B CN102522845 B CN 102522845B CN 201110407192 A CN201110407192 A CN 201110407192A CN 102522845 B CN102522845 B CN 102522845B
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- Prior art keywords
- bearing
- cover
- rotating shaft
- ring
- motor
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- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a motor bearing apparatus with a sleeve. The motor bearing apparatus comprises a rotating shaft, a sleeve, a locking assembly, a bearing inner cover, a bearing outer cover, a bearing, a bearing sleeve and a sealing ring, wherein the sleeve, the locking assembly, the bearing inner cover, the bearing outer cover, the bearing, the bearing sleeve and the sealing ring are installed on the rotating shaft. The motor bearing apparatus is characterized in that: one side of a bearing inner ring is localized by the bearing inner cover and the other side of the bearing inner ring is fixed by the sleeve and the locking assembly; a groove that is used for installing the locking assembly is opened at an outboard of an inner bore of the sleeve as well as an M330*6-7H screw thread is threaded; an R15 chamfer is formed at a position close to an inner side position; and there is a 0.5-mm gap between an axial inner side position and the rotating shaft; and an axial relative position between the sleeve and the rotating shaft can be adjusted in a range of from 0 to 5 mm. According to the invention, when the apparatus is utilized at a motor, security and reliability of fixing of a bearing can be ensured; service life of the bearing can be substantially improved; therefore, operation reliability of the motor can be enhanced.
Description
Technical field
The motor bearing apparatus of cover belongs to a field of motor manufacturing, relates to a kind of motor bearing apparatus, especially a kind of motor bearing apparatus with cover of motor force side.
Background technology
Rotor is supported by a unsteady bearing arrangement and a fixing bearing arrangement conventionally at present.Unsteady bearing arrangement refers to that bearing internal external lid seam and bearing outer ring end face have certain gap, allow rotating shaft to move axially.When axle generation thermal expansion, therefore bearing can not bear excessive extra duty.Fixing bearing arrangement blocks bearing outer ring by bearing internal external lid seam, leans on shaft block ring or locking nut and rotating shaft shoulder block that bearing inner race is blocked, and plays the effect of axial location.When fixing bearing arrangement blocks bearing inner race by shaft block ring and rotating shaft shoulder block, due to the size of shaft block ring and the restriction of stressing conditions, cannot meet major diameter or bear the needs of heavier main bearing.Now fixing bearing arrangement can be selected by locking nut and rotating shaft shoulder block bearing inner race is blocked, though can meet major diameter or bear the needs of heavier main bearing, also has certain defect.Because the position of locking nut and rotating shaft shoulder block can not regulate, cause the rigging position of bearing not regulate according to the cumulative limit of parts, so not only improve the processing grade of each parts of motor, reduced production efficiency, wasted unnecessary human and material resources, financial resources; And the assembly quality of bearing also cannot guarantee, reduce motor useful life.
Prior art is as Fig. 1 and Fig. 2:
Figure 1 shows that the structural representation of available technology adopting locking nut rigid bearing inner ring, bearing 7 inner ring one sides are located by rotating shaft 1 shoulder block, and opposite side is fixed by locking nut 9.
Figure 2 shows that the structural representation of available technology adopting shaft block ring rigid bearing inner ring, bearing 7 inner ring one sides are located by rotating shaft 1 shoulder block, and opposite side is fixed by shaft block ring 10.
Above-mentioned two schemes of the prior art, when rotating shaft and be arranged on part manufacturing tolerance in rotating shaft and be accumulated to bearing arrangement when inner, bearing inner race fixedly there is potential safety hazard, during bearing operation, there will be a series of problem.
Summary of the invention
The object of the invention is in order to solve major diameter and to bear the problem that the rigging position of heavier main bearing need regulate, a kind of motor bearing apparatus with cover is provided, this device is optimized from structure, make whole apparatus structure simple, be convenient to dismounting, and can reduce large part (as forging gear shaft) wearing and tearing, and can make its regulating shaft hold rigging position.
For achieving the above object, technical scheme provided by the invention is as follows:
The motor bearing apparatus of this band cover, comprise machine shaft, be installed on successively internal bearing cover, bearing and bearing end cover in rotating shaft, on described bearing, be arranged with bearing holder (housing, cover), described rotating shaft is also arranged with cover in the position of bearing end cover, and bearing end cover is enclosed within and puts, and the inner ring of bearing is withstood in the inner of described cover, described Tao outer end diameter is greater than inner diameter, and has sealing ring inner with the step of outer end transition; Between described Tao outer end and rotating shaft, be provided with expansion set.
The dimensional tolerance of respectively keeping off of above-mentioned rotating shaft is and subtracts tolerance, and the axial dimension tolerance of described internal bearing cover and cover is plus tolerance.
The screw thread that above-mentioned rotating shaft shaft extension end is attacked M330*6-7h.
Above-mentioned bearing inner race inner side is located by internal bearing cover, and bearing inner race outside is fixed by cover and expansion set.
Above-mentioned bearing outer ring inner side is located by bearing holder (housing, cover), and bearing outer ring outside is fixed by bearing end cover; Described bearing end cover is bolted on bearing holder (housing, cover).
The radial direction inner side of above-mentioned cover: axially outside has the groove of placing expansion set; The screw thread that axially M330*6-7H is attacked in centre position; Axially near inner side, there is the chamfering of R15; Axially between inner side and rotating shaft, there is the gap of 0.5mm; Axial distance between cover and rotating shaft can regulate 0～5mm.
More than cover the radial direction of step of the inner and outer end transition outside have the V-ring body groove of laying sealing ring; The axial distance of sealing ring and bearing end cover can regulate 0～4mm.
Between above-mentioned internal bearing cover and bearing holder (housing, cover), leave the rotary gap of 1～2mm.
Between above-mentioned bearing end cover and cover, leave the rotary gap of 0.5～1mm.
When static between above-mentioned sealing ring and bearing end cover, being contact seal, is non-contacting seal during rotation.
The present invention has following beneficial effect:
Bearing inner race of the present invention inner side is located by internal bearing cover, has reduced the wearing and tearing of countershaft shoulder block when bearing bears load.Bearing inner race of the present invention outside is fixed by cover and expansion set, the radial direction inner side of cover: axially outside has the groove of placing expansion set; The screw thread that axially M330*6-7H is attacked in centre position; Axially near inner side, there is the chamfering of R15; Axially between inner side and rotating shaft, have the gap of 0.5mm, the axial distance between cover and rotating shaft can be according to the position adjustments 0～5mm of bearing assemble like this.Mix up rear installation expansion set, bearing inner race is fixed.Because the fixture of bearing can regulate according to the rigging position of bearing, therefore guarantee the assembly quality of bearing arrangement, thereby greatly improved bearing useful life, improve the operational reliability of whole motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of available technology adopting locking nut rigid bearing inner ring.
Fig. 2 is the structural representation of available technology adopting shaft block ring rigid bearing inner ring.
Fig. 3 is the schematic diagram of an embodiment of bearing arrangement of band cover of the present invention.
Wherein: 1 is rotating shaft; 2 is expansion set; 3 is cover; 4 is sealing ring; 5 is bearing end cover; 6 is bearing holder (housing, cover); 7 is bearing; 8 is internal bearing cover; 9 is locking nut; 10 is shaft block ring.
Embodiment
Referring to Fig. 3, the motor bearing apparatus of band cover of the present invention, comprises machine shaft 1, is installed on successively internal bearing cover 8, bearing 7 and bearing end cover 5 in rotating shaft 1, is arranged with bearing holder (housing, cover) 6 on bearing 7.Rotating shaft 1 is also arranged with 3 in the position of bearing end cover 5, and bearing end cover 5 is enclosed within on 3, overlaps the inner ring that bearing 7 is withstood in the inner of 3, overlaps 3 outer end diameter and is greater than inner diameter, and have sealing ring 4 inner with the step of outer end transition; Between the outer end of cover 3 and rotating shaft 1, be provided with expansion set 2.The dimensional tolerance of respectively keeping off of its shaft 1 is and subtracts tolerance, and the axial dimension tolerance of internal bearing cover 8 and cover 3 is plus tolerance.At the shaft extension end of rotating shaft 1, attack the screw thread of M330*6-7h.
Bearing 7 inner ring inner sides are located by internal bearing cover 8, and bearing 7 inner ring outsides are fixing by cover 3 and expansion set 2.Bearing 7 inner sides, outer ring are located by bearing holder (housing, cover) 6, and bearing 7 outsides, outer ring are fixed by bearing end cover 5; Bearing end cover 5 is bolted on bearing holder (housing, cover) 6.The radial direction inner side of cover 3: axially outside has the groove of placing expansion set 2; The screw thread that axially M330*6-7H is attacked in centre position; Axially near inner side, there is the chamfering of R15; Axially between inner side and rotating shaft 1, there is the gap of 0.5mm; Axial distance between cover 3 and rotating shaft 1 can regulate 0～5mm.The radial direction outside of the inner of cover 3 and the step of outer end transition has the V-ring body groove of laying sealing ring 4; Sealing ring 4 can regulate 0～4mm with the axial distance of bearing end cover 5.Between internal bearing cover 8 and bearing holder (housing, cover) 6, leave the rotary gap of 1～2mm.Between bearing end cover 5 and cover 3, leave the rotary gap of 0.5～1mm.When static between sealing ring 4 and bearing end cover 5, being contact seal, is non-contacting seal during rotation.
In sum, the rigging position of bearing can regulate according to the physical location of bearing, and in figure, two places of A, B indication can be used for the position that regulates, thereby has guaranteed fixing safe and reliable of bearing, has improved widely bearing useful life.
Claims (4)
1. the motor bearing apparatus with cover, comprise machine shaft (1), be installed on successively internal bearing cover (8), bearing (7) and bearing end cover (5) in rotating shaft (1), on described bearing (7), be arranged with bearing holder (housing, cover) (6), it is characterized in that: described rotating shaft (1) is also arranged with (3) in the position of bearing end cover (5), bearing end cover (5) is enclosed within on (3), the inner ring of bearing (7) is withstood in the inner of cover (3), the outer end diameter of cover (3) is greater than inner diameter, and has sealing ring (4) inner with the step of outer end transition; Between the outer end of cover (3) and rotating shaft (1), be provided with expansion set (2);
The screw thread that rotating shaft (1) shaft extension end is attacked M330*6-7h;
Described bearing (7) inner ring inner side is by internal bearing cover (8) location, and bearing (7) inner ring outside is fixing by cover (3) and expansion set (2);
Inner side, described bearing (7) outer ring is by bearing holder (housing, cover) (6) location, and outside, bearing (7) outer ring is fixing by bearing end cover (5); Described bearing end cover (5) is bolted on bearing holder (housing, cover) (6);
The radial direction inner side of cover (3): axially outside has the groove of placing expansion set (2); The screw thread that axially M330*6-7H is attacked in centre position; Axially near inner side, there is the chamfering of R15; Axially between inner side and rotating shaft (1), there is the gap of 0.5mm; Axial distance between cover (3) and rotating shaft (1) can regulate 0～5mm;
The radial direction outside of the cover the inner of (3) and the step of outer end transition has the V-ring body groove of laying sealing ring (4); Sealing ring (4) can regulate 0～4mm with the axial distance of bearing end cover (5);
When static between described sealing ring (4) and bearing end cover (5), being contact seal, is non-contacting seal during rotation.
2. the motor bearing apparatus of band according to claim 1 cover, is characterized in that: the dimensional tolerance of respectively keeping off of described rotating shaft (1) is and subtracts tolerance, and internal bearing cover (8) and the axial dimension tolerance of overlapping (3) are plus tolerance.
3. the motor bearing apparatus of band cover according to claim 1, is characterized in that: the rotary gap that leaves 1～2mm between described internal bearing cover (8) and bearing holder (housing, cover) (6).
4. the motor bearing apparatus with expansion set according to claim 1, is characterized in that: the rotary gap that leaves 0.5～1mm between described bearing end cover (5) and cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110407192.4A CN102522845B (en) | 2011-12-08 | 2011-12-08 | Motor bearing apparatus with sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110407192.4A CN102522845B (en) | 2011-12-08 | 2011-12-08 | Motor bearing apparatus with sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102522845A CN102522845A (en) | 2012-06-27 |
| CN102522845B true CN102522845B (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110407192.4A Active CN102522845B (en) | 2011-12-08 | 2011-12-08 | Motor bearing apparatus with sleeve |
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| Country | Link |
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| CN (1) | CN102522845B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539086A (en) * | 2014-12-09 | 2015-04-22 | 张斐斐 | Outer sleeve structure for electric generator |
| CN106907398B (en) * | 2017-05-02 | 2023-09-15 | 西安赛隆金属材料有限责任公司 | Bearing support device for high-speed rotating shaft |
| CN108448794B (en) * | 2018-05-23 | 2024-04-16 | 深圳市弘城益五金制品有限公司 | Bearing structure of double-rotor motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2118364U (en) * | 1992-05-15 | 1992-10-07 | 上海先锋电工厂 | Three phase asynchronous intermediate frequency vibrating motor |
| JP3907635B2 (en) * | 2004-04-16 | 2007-04-18 | ファナック株式会社 | Electric motor |
| CN201312218Y (en) * | 2008-11-27 | 2009-09-16 | 湘潭电机股份有限公司 | Alternative current variable frequency speed regulation asynchronous traction motor |
| CN102437684A (en) * | 2011-12-02 | 2012-05-02 | 西安泰富西玛电机有限公司 | Primary gear transmission motor |
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| CN102522845A (en) | 2012-06-27 |
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Effective date of registration: 20230609 Address after: No. 21, Building 11, Zone A, Phase I, Business Plaza, south of Huanghe Road and east of Huashan Street, Longsha District, Qiqihar City, Heilongjiang Province, 161005 Patentee after: Qiqihar Nankuichang Enterprise Management Consulting Co.,Ltd. Address before: 710032 No. 159 Mingguang Road, Xi'an economic and Technological Development Zone, Shaanxi Patentee before: XI'AN TECH FULL SIMO MOTOR Co.,Ltd. |