CN103742526A - Gyro motor bearing unit - Google Patents
Gyro motor bearing unit Download PDFInfo
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- CN103742526A CN103742526A CN201310718130.4A CN201310718130A CN103742526A CN 103742526 A CN103742526 A CN 103742526A CN 201310718130 A CN201310718130 A CN 201310718130A CN 103742526 A CN103742526 A CN 103742526A
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- resilient bushing
- bearing unit
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Abstract
The invention discloses a gyro motor bearing unit and relates to the field of the design technologies of the bearings. The gyro motor bearing unit comprises a step shaft (12), a bearing A (19), a bearing B (20), an oil storage ring (16), an oil storage ring lining (18), an elastic lining (1) and a U-shaped clamping ring (10), wherein the bearing A and the bearing B are arranged on two sides of the middle part of the step shaft (12); the elastic lining and the U-shaped clamping ring are arranged between the bearings A and B; the U-shaped clamping ring is arranged between the elastic lining and the bearing A; the oil storage ring is arranged in a groove body which is formed in the middle part of the inner surface of the elastic lining; an oil storage ring lining is arranged between the oil storage ring and the groove body of the elastic lining. The gyro motor bearing unit overcomes such defects of the conventional gyro motor bearing unit as low rotation precision, short service life, low reliability and poor installation qualified rate; and the performance of the gyro motor bearing unit can be effectively improved.
Description
Technical field
The present invention relates to technical field of bearings, especially relate to a kind of gyro machine bearing unit.
Background technique
Known, the measure-alike divergence type angular contact ball bearing of the gyro machine live axle that the general main employing in current domestic flexible gyroscope motor bearings unit is conventional and two covers applies axially locating by inside and outside rigid liner and preloads the structure combining; For the ease of assembling, the cooperation of bearing inner race and axle adopts little Spielpassung, due to closely spaced existence, cause the running accuracy of bearing to decline, and bearing axial preload need to grind by repairing the height of inside and outside rigid liner and accurately control, thereby precision, performance and the installation up-to-standard rate of gyro machine have been reduced; General gyro machine boundary dimension is less, and bearing unit, owing to being subject to motor mounting space structural limitations, does not allow subsidiary other supplementary oil supplying device, so exist the problem of bearing lubrication deficiency, is also greatly affected the working life of bearing; Development along with gyro machine technology, gyro machine is more and more microminiaturized, more and more higher to bearing performance requirement, on the basis of traditional bearing modular construction, the precision, life-span and the reliability that improve bearing are the difficult problems that gyro machine technical field of bearings faces always.
Summary of the invention
In order to realize described goal of the invention, the invention discloses a kind of gyro machine bearing unit, described gyro machine bearing unit is set to multi-stage stairs by Step Shaft 12, adopt not identical back-to-back being arranged on Step Shaft 12 of angular contact ball bearing of two cover internal diameter sizes, the inner ring 6 of angular contact ball bearing adopts interference fit with Step Shaft 12, make inner ring 6 and Step Shaft 12 form integral combined structure, utilize resilient bushing 1 and 10 pairs of bearings of U-shaped collar to apply axial little level pressure and preload, and realize the supplemental lubrication to bearing by oil storage ring 16; The present invention has overcome the shortcomings such as traditional gyro machine bearing unit running accuracy is low, the life-span is short, reliability is not high, installation up-to-standard rate is low, has effectively improved the performance of gyro machine bearing unit.
In order to realize the object solving the problems of the technologies described above, the present invention has adopted following technological scheme:
A kind of gyro machine bearing unit, comprise Step Shaft, bearing A, bearing B, oil storage ring, oil storage lining papers cover, resilient bushing and U-shaped collar, in the both sides, middle part of Step Shaft, be respectively equipped with bearing A and bearing B, between bearing A and bearing B, be provided with resilient bushing and U-shaped collar, described U-shaped collar is arranged between resilient bushing and bearing A, described oil storage ring is arranged in the cell body at resilient bushing internal surface middle part, is provided with oil storage lining papers cover between oil storage ring and the cell body of resilient bushing.
Described gyro machine bearing unit, described bearing A and bearing B comprise respectively inner ring, outer ring, rolling element and retainer, outside at inner ring is provided with outer ring, described rolling element is arranged in the raceway between inner ring outer surface and inner surface, a plurality of rolling elements are held frame evenly to be separated, and the internal diameter of described bearing B is greater than the internal diameter of bearing A.
Described gyro machine bearing unit, at the middle part of Step Shaft, one side is provided with step A, shaft part A successively, described step A is arranged on the inner side of shaft part A, described shaft part A is through the internal diameter of bearing A, step locating face A by step A locates bearing A, at the middle part of Step Shaft opposite side, is provided with successively shaft part B and step B, and described shaft part B is arranged on the inner side of step B, described bearing B is arranged on the outside of shaft part B, by the step locating face B of step B, bearing B is located.
Described gyro machine bearing unit, at the middle part of resilient bushing outer surface, be provided with the slotted hole that two row are uniformly distributed along the circumference, wherein arbitrary one slotted hole listing is at least two, a side at resilient bushing internal surface is provided with boss, opposite side at resilient bushing internal surface is provided with groove, in groove, be provided with spring collar, form a cell body between described boss and spring collar, described oil storage ring and oil storage lining papers cover are separately positioned in the cell body between boss and spring collar.
Described gyro machine bearing unit, the shaft part A of described Step Shaft and bearing A interference fit; The shaft part B of described Step Shaft and bearing B interference fit.
Described gyro machine bearing unit, the inner ring of described bearing A and bearing B is band ramp structure.
Described gyro machine bearing unit is uniformly distributed a plurality of pockets hole on the circumferential surface of retainer, and described pocket hole is the straight pocket hole structure of entity, and a plurality of rolling elements are installed respectively in a plurality of pockets hole.
Described gyro machine bearing unit, the outer surface of described oil storage lining papers cover coordinates with the internal surface gaps of resilient bushing cell body, the internal surface interference fit of the outer surface of oil storage ring and oil storage lining papers cover.
Described gyro machine bearing unit, described inner ring and rolling element adopt army's first bearing steel material, and described Step Shaft, resilient bushing, oil storage lining papers cover, U-shaped collar, spring collar all adopt nonmagnetic steel material.
Described gyro machine bearing unit, described bearing A and bearing B are angular contact ball bearing, and described angular contact ball bearing adopts back-to-back mounting type.
By adopting technique scheme, the present invention has following beneficial effect:
Gyro machine bearing unit of the present invention is set to multi-stage stairs by Step Shaft 12, adopt not identical back-to-back being arranged on Step Shaft 12 of angular contact ball bearing of two cover internal diameter sizes, the inner ring 6 of angular contact ball bearing adopts interference fit with Step Shaft 12, make inner ring 6 and Step Shaft 12 form integral combined structure, utilizing resilient bushing 1 and 10 pairs of bearings of U-shaped collar to apply axial little level pressure preloads, and by oil storage ring, realize the supplemental lubrication to bearing, make the present invention have following superiority:
(1) described gyro machine bearing unit is installed gyro machine and is become simple and efficient, improved installation up-to-standard rate;
(2) inner ring of angular contact ball bearing and Step Shaft 12 are designed to integral combined structure, make angular contact ball bearing apply axial preload and do not need to use neck bush, saved installing space, and angular contact ball bearing is by external diameter and the end face location of Step Shaft 12, reduced lasso and be loaded on nonconcentricity and the inclination producing on Step Shaft, bearing positioning precision is improved;
(3) resilient bushing 1 makes the support of angular contact ball bearing change elastic support into by rigid support, utilizing resilient bushing and the common diagonal angle of U-shaped collar contact ball bearing to apply axial little level pressure preloads, bearing unit is joined preloading easy, and preload the impact that changed by bearing temperature, bearing preload lotus is stable;
(4) in bearing unit inside, set up oil storage ring, realized the supplemental lubrication of diagonal angle contact ball bearing; The lubricated employing of angular contact ball bearing oil lubrication, retainer and oil storage ring adopt porous polyimide material, make the elastohydrodynamic lubrication oil film of bearing stable for extended periods of time, prevent oil-poor phenomenon, have extended bearing life;
(5) bearing inner race and rolling element material adopt army's first Bearing Steel to improve bearing wear resistance; Step Shaft, resilient bushing, oil storage lining papers cover, U-shaped collar, spring collar all adopt nonmagnetic steel material, have effectively improved the diamagnetism of gyro machine bearing unit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In the drawings: 1, resilient bushing; 2, spring collar; 3, step A; 4, shaft part A; 5, step locating face A; 6, inner ring; 7, retainer; 8, rolling element; 9, outer ring; 10, U-shaped collar; 11, slotted hole; 12, Step Shaft; 13, step B; 14, shaft part B; 15, step locating face B; 16, oil storage ring; 17, boss surface; 18, oil storage lining papers cover; 19, bearing A; 20, bearing B.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, so that those skilled in the art further understands the present invention, but following embodiment is not limiting the scope of the present invention.
Gyro machine bearing unit described in 1 by reference to the accompanying drawings, comprise Step Shaft 12, bearing A19, bearing B20, oil storage ring 16, oil storage lining papers cover 18, resilient bushing 1 and U-shaped collar 10, in the both sides, middle part of Step Shaft 12, be respectively equipped with bearing A19 and bearing B20, described bearing A19 and bearing B20 are angular contact ball bearing, and described angular contact ball bearing adopts back-to-back mounting type, described bearing A19 and bearing B20 comprise respectively inner ring 6, outer ring 9, rolling element 8 and retainer 7, in the outside of inner ring 6, be provided with outer ring 9, described rolling element 8 is arranged in the raceway between inner ring 6 outer surfaces and outer ring 9 internal surfaces, a plurality of rolling elements 8 are held frame 7 evenly to be separated, and the internal diameter of described bearing B20 is greater than the internal diameter of bearing A19, the inner ring 6 of described bearing A19 and bearing B20 is band ramp structure, on the circumferential surface of retainer 7, be uniformly distributed a plurality of pockets hole, described pocket hole is the straight pocket hole structure of entity, and a plurality of rolling elements 8 are installed respectively in a plurality of pockets hole, described inner ring and rolling element adopt army's first bearing steel material, and described Step Shaft 12, resilient bushing 1, oil storage lining papers cover 18, U-shaped collar 10, spring collar 2 all adopt nonmagnetic steel material, at the middle part of Step Shaft 12, a side is provided with step A3, shaft part A4 successively, described step A3 is arranged on the inner side of shaft part A4, described shaft part A4 is through the internal diameter of bearing A19, step locating face A5 by step A3 locates bearing A19, at the middle part of Step Shaft 12 opposite side, be provided with successively shaft part B14 and step B13, described shaft part B14 is arranged on the inner side of step B13, and described bearing B20 is arranged on the outside of shaft part B14, by the step locating face B15 of step B13, bearing B20 is located, the shaft part A4 of described Step Shaft 12 and bearing A19 interference fit, the shaft part B14 of described Step Shaft 12 and bearing B20 interference fit, between bearing A19 and bearing B20, be provided with resilient bushing 1 and U-shaped collar 10, described U-shaped collar 10 is arranged between resilient bushing 1 and bearing A19, described oil storage ring 16 is arranged in the cell body at resilient bushing 1 internal surface middle part, at the middle part of resilient bushing 1 outer surface, be provided with the slotted hole 11 that two row are uniformly distributed along the circumference, wherein arbitrary one slotted hole listing 11 is at least two, a side at resilient bushing 1 internal surface is provided with boss, opposite side at resilient bushing 1 internal surface is provided with groove, in groove, be provided with spring collar 2, between described boss and spring collar 2, form a cell body, in described oil storage ring 16 and oil storage lining papers cover 18 cell bodies that are separately positioned between boss and spring collar 2, between oil storage ring 16 and the cell body of resilient bushing 1, be provided with oil storage lining papers cover 18, the outer surface of described oil storage lining papers cover 18 coordinates with the internal surface gaps of resilient bushing 1 cell body, the internal surface interference fit of the outer surface of oil storage ring 16 and oil storage lining papers cover 18.
Implement gyro machine bearing unit of the present invention, when mounted, by the inner ring of angular contact ball bearing 6 and the shaft part A4 of Step Shaft 12 and the outer diametric plane interference fit of shaft part B14, step locating face B15 by step B13 locates bearing B20, step locating face A5 by step A3 locates bearing A19, resilient bushing 1 and U-shaped collar 10 are set between bearing A19 and bearing B20, at the middle part of resilient bushing 1 outer surface, arrange and be provided with three slotted holes 11 that two row are uniformly distributed along the circumference to reduce the rigidity of resilient bushing, by resilient bushing 1 and U-shaped collar 10, be arranged side by side between bearing A19 and bearing B20, the axial level pressure that spring bearing outer ring 9 applies bearing jointly preloads, oil storage lining papers cover 18 and oil storage ring 16 are set in the cell body of resilient bushing 1 internal surface, described oil storage lining papers cover 18 1 side end faces are by boss surface 17 location of resilient bushing 1 internal surface one side, oil storage lining papers overlaps 18 opposite side end faces by spring collar 2 axially locating, spring collar 2 is arranged in the groove of resilient bushing 1 internal surface opposite side, the external diameter of described oil storage lining papers cover 18 and the internal diameter Spielpassung of resilient bushing 1, the internal diameter interference fit of the external diameter of oil storage ring 16 and oil storage lining papers cover 18, the present invention is quick for installation, improved bearing positioning precision, bearing preload lotus is stable and effectively prevent oil-poor phenomenon, thereby extended bearing life.
Part not in the detailed description of the invention is prior art.
The embodiment who selects in this article in order to disclose goal of the invention of the present invention, currently thinks suitablely, still, will be appreciated that, the present invention is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and invention scope.
Claims (10)
1. a gyro machine bearing unit, comprise Step Shaft (12), bearing A(19), bearing B(20), oil storage ring (16), oil storage lining papers cover (18), resilient bushing (1) and U-shaped collar (10), it is characterized in that: the both sides, middle part at Step Shaft (12) are respectively equipped with bearing A(19) and bearing B(20), at bearing A(19) and bearing B(20) between be provided with resilient bushing (1) and U-shaped collar (10), described U-shaped collar (10) is arranged on resilient bushing (1) and bearing A(19) between, described oil storage ring (16) is arranged in the cell body at resilient bushing (1) internal surface middle part, between oil storage ring (16) and the cell body of resilient bushing (1), be provided with oil storage lining papers cover (18).
2. gyro machine bearing unit according to claim 1, it is characterized in that: described bearing A(19) and bearing B(20) comprise respectively inner ring (6), outer ring (9), rolling element (8) and retainer (7), in the outside of inner ring (6), be provided with outer ring (9), described rolling element (8) is arranged in the raceway between inner ring (6) outer surface and outer ring (9) internal surface, a plurality of rolling elements (8) are held frame (7) evenly to be separated, described bearing B(20) internal diameter be greater than bearing A(19) internal diameter.
3. gyro machine bearing unit according to claim 1, it is characterized in that: at the middle part of Step Shaft (12), a side is provided with step A(3 successively), shaft part A(4), described step A(3) be arranged on shaft part A(4) inner side, described shaft part A(4) through bearing A(19) internal diameter, by step A(3) step locating face A(5) to bearing A(19) location, middle part opposite side at Step Shaft (12) is provided with shaft part B(14 successively) and step B(13), described shaft part B(14) be arranged on step B(13) inner side, described bearing B(20) be arranged on shaft part B(14) outside, by step B(13) step locating face B(15) to bearing B(20) location.
4. gyro machine bearing unit according to claim 1, it is characterized in that: at the middle part of resilient bushing (1) outer surface, be provided with the slotted hole (11) that two row are uniformly distributed along the circumference, wherein arbitrary one slotted hole listing (11) is at least two, a side at resilient bushing (1) internal surface is provided with boss, opposite side at resilient bushing (1) internal surface is provided with groove, in groove, be provided with spring collar (2), between described boss and spring collar (2), form a cell body, described oil storage ring (16) and oil storage lining papers cover (18) are separately positioned in the cell body between boss and spring collar (2).
5. gyro machine bearing unit according to claim 1, is characterized in that: the shaft part A(4 of described Step Shaft (12)) with bearing A(19) interference fit; The shaft part B(14 of described Step Shaft (12)) with bearing B(20) interference fit.
6. gyro machine bearing unit according to claim 1, is characterized in that: described bearing A(19) and bearing B(20) inner ring (6) be band ramp structure.
7. gyro machine bearing unit according to claim 1, is characterized in that: on the circumferential surface of retainer (7), be uniformly distributed a plurality of pockets hole, described pocket hole is the straight pocket hole structure of entity, and a plurality of rolling elements (8) are installed respectively in a plurality of pockets hole.
8. gyro machine bearing unit according to claim 1, it is characterized in that: the outer surface of described oil storage lining papers cover (18) coordinates with the internal surface gaps of resilient bushing (1) cell body the internal surface interference fit of the outer surface of oil storage ring (16) and oil storage lining papers cover (18).
9. gyro machine bearing unit according to claim 1, it is characterized in that: described inner ring (6) and rolling element (8) adopt army's first bearing steel material, and described Step Shaft (12), resilient bushing (1), oil storage lining papers cover (18), U-shaped collar (10), spring collar (2) all adopt nonmagnetic steel material.
10. gyro machine bearing unit according to claim 1, is characterized in that: described bearing A(19) and bearing B(20) be angular contact ball bearing, described angular contact ball bearing adopts back-to-back mounting type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310718130.4A CN103742526B (en) | 2013-12-24 | 2013-12-24 | A kind of gyro machine bearing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310718130.4A CN103742526B (en) | 2013-12-24 | 2013-12-24 | A kind of gyro machine bearing unit |
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| Publication Number | Publication Date |
|---|---|
| CN103742526A true CN103742526A (en) | 2014-04-23 |
| CN103742526B CN103742526B (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310718130.4A Active CN103742526B (en) | 2013-12-24 | 2013-12-24 | A kind of gyro machine bearing unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176843A (en) * | 2019-05-20 | 2019-08-27 | 中国船舶重工集团公司第七0七研究所 | A kind of gyro machine bearing is to preloading bringing device |
| CN111009989A (en) * | 2019-11-26 | 2020-04-14 | 西安航天精密机电研究所 | Switching device used between gyro motor and dynamic balancing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2849303Y (en) * | 2004-12-21 | 2006-12-20 | 洛阳轴研科技股份有限公司 | Combined structure of integrated shaft jointing bearing |
| CN201031878Y (en) * | 2007-03-25 | 2008-03-05 | 上海卡固电气设备有限公司 | Motor bearings |
| US20080247689A1 (en) * | 2007-04-06 | 2008-10-09 | Nidec Corporation | Motor |
| US20120051681A1 (en) * | 2010-08-31 | 2012-03-01 | Minebea Co., Ltd. | Preload device of ball bearing and motor having the preload device |
-
2013
- 2013-12-24 CN CN201310718130.4A patent/CN103742526B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2849303Y (en) * | 2004-12-21 | 2006-12-20 | 洛阳轴研科技股份有限公司 | Combined structure of integrated shaft jointing bearing |
| CN201031878Y (en) * | 2007-03-25 | 2008-03-05 | 上海卡固电气设备有限公司 | Motor bearings |
| US20080247689A1 (en) * | 2007-04-06 | 2008-10-09 | Nidec Corporation | Motor |
| US20120051681A1 (en) * | 2010-08-31 | 2012-03-01 | Minebea Co., Ltd. | Preload device of ball bearing and motor having the preload device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176843A (en) * | 2019-05-20 | 2019-08-27 | 中国船舶重工集团公司第七0七研究所 | A kind of gyro machine bearing is to preloading bringing device |
| CN111009989A (en) * | 2019-11-26 | 2020-04-14 | 西安航天精密机电研究所 | Switching device used between gyro motor and dynamic balancing machine |
| CN111009989B (en) * | 2019-11-26 | 2021-05-14 | 西安航天精密机电研究所 | Switching device used between gyro motor and dynamic balancing machine |
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| Publication number | Publication date |
|---|---|
| CN103742526B (en) | 2016-10-19 |
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Effective date of registration: 20180509 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |