CN102829091A - Rolling auxiliary bearing system - Google Patents
Rolling auxiliary bearing system Download PDFInfo
- Publication number
- CN102829091A CN102829091A CN2012103308706A CN201210330870A CN102829091A CN 102829091 A CN102829091 A CN 102829091A CN 2012103308706 A CN2012103308706 A CN 2012103308706A CN 201210330870 A CN201210330870 A CN 201210330870A CN 102829091 A CN102829091 A CN 102829091A
- Authority
- CN
- China
- Prior art keywords
- bearing
- auxiliary bearing
- rolling auxiliary
- bearings
- internal diameter
- 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.)
- Pending
Links
Images
Abstract
The invention provides a rolling auxiliary bearing system, which comprises a bearing pedestal (1), a bearing end cap (3), a rotation shaft (4), a check ring (5) and a four point contact rolling bearing (2); wherein the rotation shaft (4) is provided with a shaft shoulder, and the bearing pedestal (1) is connected with the bearing end cap (3) by bolts; the axial locating for the four point contact rolling bearing (2) is conducted by the check ring (5) and the shaft shoulder of the rotation shaft (4). The rolling auxiliary bearing system has high limiting speed and small volume.
Description
Technical field
The present invention relates to the electromagnetic bearing field, relate in particular to a kind of rolling auxiliary bearing system vertical or the horizontal active magnetic bearing system that axial force is bigger that is used for.
Background technique
Active magnetic bearing system has and does not have the machinery contact, rotating speed is high, can carry out characteristics such as ACTIVE CONTROL, has the advantage that can not be substituted at some special occasions.But there is the risk of sudden power in electromagnetic bearing, possibly cause stator modules such as rotor and electromagnetic bearing to collide, and makes system failure, even causes major accident.Therefore, need auxiliary bearing is installed, be used for the supporting of rotor-support-foundation system when electromagnetic bearing can't be worked.In addition, at orderly closedown states such as installation, maintenances, rotor also need drop on the auxiliary bearing.The auxiliary bearing of active magnetic bearing system at first will have high rotational speed and certain bearing value.Secondly, because electromagnetic bearing is comparatively complicated, it is bigger to take up room, and therefore sometimes the volume of auxiliary bearing has been proposed strict restriction.
In research and practice process to auxiliary bearing; Inventor of the present invention finds: for horizontal active magnetic bearing system vertical or that axial force is bigger; In order to guarantee that auxiliary bearing can bear the axial force of both direction, adopt the mode of two row angular contact ball bearing paired mounting to design auxiliary bearing usually.Such design at first makes the limit speed of bearing descend, because the angular contact ball bearing limit speed of paired mounting is less than single row bearing; Secondly, owing to adopt two row bearings, the volume of auxiliary bearing also can increase.Therefore, the present invention more is applicable to and requires that limit speed is high, thrust load is less relatively, volume also requires less occasion.
Summary of the invention
The technical problem that (one) will solve
The purpose of this invention is to provide a kind of rolling auxiliary bearing system, it can satisfy the requirement to the high rotating speed of auxiliary bearing, small volume of vertical or horizontal active magnetic bearing system that axial force is bigger well.
(2) technological scheme
In order to solve the problems of the technologies described above, the present invention provides a kind of rolling auxiliary bearing system, and this rolling auxiliary bearing system comprises bearing base, bearing (ball) cover, rotating shaft, back-up ring and 4 touch scrolling bearings; Wherein, said rotating shaft has the shaft shoulder, and said bearing base is connected through bolt with bearing (ball) cover, and the shaft shoulder of said back-up ring and rotating shaft carries out axially locating to 4 touch scrolling bearings.
Optional, said rolling auxiliary bearing system is applicable to bears twocouese thrust load and less vertical active magnetic bearing system or the bigger horizontal active magnetic bearing system of axial force of radial load.
Optional, gapped between the inner ring of said rotating shaft and 4 touch scrolling bearings.
Optional, between the outer ring of said 4 touch scrolling bearings and the bearing base transition fit.
Optional, gapped between the lower end surface of the shaft shoulder of said rotating shaft and 4 touch scrolling bearing inner races.
Optional, gapped between the upper-end surface of said back-up ring and 4 touch scrolling bearing inner races.
Optional, said bearing base has first inside diameter D
1, second inside diameter D
2With the 3rd inside diameter D
3, and according to first inside diameter D
1, second inside diameter D
2, the 3rd inside diameter D
3Order increase gradually.
Optional, said first inside diameter D
1Corresponding with the shaft shoulder place of rotating shaft; Second inside diameter D
2Corresponding with the outer ring of 4 touch scrolling bearings; The 3rd inside diameter D
3Corresponding with bearing (ball) cover.
(3) beneficial effect
Because the outer ring of 4 touch scrolling bearings that the present invention adopted is by accurate assorted the forming of two half-turns; And the ditch radius of curvature of its integral inner ring is very little; Steel ball is all contacted on four " points " with inside and outside circle, make bearing rely on compact size to bear the thrust load of bigger both direction like this, and had the axial limiting ability of good both direction; So rolling auxiliary bearing system limits rotating speed of the present invention is high, volume is little.
Description of drawings
Fig. 1 is structure (part) schematic representation of a kind of auxiliary bearing system of rolling of the present invention.
Among the figure, 1: bearing base; 2: four touch scrolling bearings; 3: bearing (ball) cover; 4: rotating shaft; 5: back-up ring.
Embodiment
Below in conjunction with accompanying drawing the roll embodiment of auxiliary bearing system of the present invention is done further explain.These mode of executions only are used to explain the present invention, and are not limitation of the present invention.
In description of the invention; Need to prove; The orientation of indications such as term " " center ", " vertically ", " laterally ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the present invention; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can concrete condition understand above-mentioned term concrete implication in the present invention.
In addition, in description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more.
As shown in Figure 1, a kind of rolling auxiliary bearing system, this rolling auxiliary bearing system comprise bearing base 1, touch scrolling bearing 2, bearing (ball) cover 3, rotating shaft 4 and back-up rings 5 at 4.Said rotating shaft 4 has the shaft shoulder.The inner circumference of said bearing base 1, stepped in the axial direction, promptly bearing base 1 has the internal diameter of variation, and the internal diameter of said variation comprises first inside diameter D
1, second inside diameter D
2With the 3rd inside diameter D
3, wherein, first inside diameter D
1Corresponding with the shaft shoulder place diameter of rotating shaft 4, to satisfy the requirement easy for installation of rotating shaft 4 shaft shoulders; Second inside diameter D
2Corresponding with the external diameter of 4 touch scrolling bearings 2, to realize the transition fit of bearing base 1 and 4 touch scrolling bearing 2 outer rings; The 3rd inside diameter D
3Corresponding with bearing (ball) cover 3 external diameters, satisfying the installation requirement of bearing (ball) cover 3, and according to first inside diameter D
1, second inside diameter D
2With the 3rd inside diameter D
3Order increase gradually.Said bearing base 1 and bearing (ball) cover 3 are connected through bolt.
For fear of the axial float of 4 touch scrolling bearings 2, with the shaft shoulder of back-up ring 5 and rotating shaft 44 touch scrolling bearings 2 are carried out axially locating, be transition fit between the outer ring of 4 touch scrolling bearings 2 and the bearing base 1.Between the inner ring of rotating shaft 4 and 4 touch scrolling bearings 2 certain interval is arranged; Between the lower end surface of the shaft shoulder of rotating shaft 4 and 4 touch scrolling bearing 2 inner rings certain clearance is arranged, between the upper-end surface of back-up ring 5 and 4 touch scrolling bearing 2 inner rings certain clearance is arranged also.
Embodiment of the present invention is following:
In or the horizontal active magnetic bearing system that axial force is bigger vertical, use the core of 4 touch scrolling bearings 2 as rolling auxiliary bearing system at one.During horizontal active magnetic bearing system proper functioning that this is vertical or axial force is bigger; Rolling auxiliary bearing system each several part does not rotate; In case the overload or the loss of power accident take place; Rotating shaft 4 contacts with the inner ring of 4 touch scrolling bearings 2, and the shaft shoulder of back-up ring 5 and rotating shaft 4 also possibly contact with the upper and lower end face of 4 touch scrolling bearing 2 inner rings, drives inner ring and rotates together.
Because 4 touch scrolling bearings 2 have higher limit speed, it is less to take volume, and the angular contact ball auxiliary bearing of comparing general paired mounting more is applicable to active magnetic bearing system, especially under the less condition of radial load.
The outer ring of 4 touch scrolling bearings that the present invention adopted is by accurate assorted the forming of two half-turns; And the ditch radius of curvature of its integral inner ring is very little; Steel ball is all contacted on four " points " with inside and outside circle, make bearing rely on compact size to bear the thrust load of bigger both direction like this, and had the axial limiting ability of good both direction; Rolling auxiliary bearing system limits rotating speed therefore of the present invention is high, and volume is little.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and replacement, these improvement and replacement also should be regarded as protection scope of the present invention.
Claims (8)
1. rolling auxiliary bearing system, this rolling auxiliary bearing system comprises bearing base (1), bearing (ball) cover (3), rotating shaft (4) and back-up ring (5), it is characterized in that: said rolling auxiliary bearing system also comprises 4 touch scrolling bearings (2); Wherein, said rotating shaft (4) has the shaft shoulder, and said bearing base (1) is connected through bolt with bearing (ball) cover (3), and the shaft shoulder of said back-up ring (5) and rotating shaft (4) carries out axially locating to 4 touch scrolling bearings (2).
2. rolling auxiliary bearing according to claim 1 system is characterized in that: said rolling auxiliary bearing system is applicable to bears twocouese thrust load and less vertical active magnetic bearing system or the bigger horizontal active magnetic bearing system of axial force of radial load.
3. rolling auxiliary bearing according to claim 1 system is characterized in that: gapped between the inner ring of said rotating shaft (4) and 4 touch scrolling bearings (2).
4. rolling auxiliary bearing according to claim 1 system is characterized in that: be transition fit between the outer ring of said 4 touch scrolling bearings (2) and the bearing base (1).
5. rolling auxiliary bearing according to claim 1 system is characterized in that: gapped between the lower end surface of the shaft shoulder of said rotating shaft (4) and 4 touch scrolling bearings (2) inner ring.
6. rolling auxiliary bearing according to claim 1 system is characterized in that: gapped between the upper-end surface of said back-up ring (5) and 4 touch scrolling bearings (2) inner ring.
7. rolling auxiliary bearing according to claim 1 system, it is characterized in that: said bearing base (1) has the first internal diameter (D
1), the second internal diameter (D
2) and the 3rd internal diameter (D
3), and according to the first internal diameter (D
1), the second internal diameter (D
2), the 3rd internal diameter (D
3) order increase gradually.
8. rolling auxiliary bearing according to claim 7 system is characterized in that: the said first internal diameter (D
1) corresponding with the shaft shoulder place of rotating shaft (4); Second internal diameter (the D
2) corresponding with the outer ring of 4 touch scrolling bearings (2); The 3rd internal diameter (D
3) corresponding with bearing (ball) cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103308706A CN102829091A (en) | 2012-09-07 | 2012-09-07 | Rolling auxiliary bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103308706A CN102829091A (en) | 2012-09-07 | 2012-09-07 | Rolling auxiliary bearing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102829091A true CN102829091A (en) | 2012-12-19 |
Family
ID=47332336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103308706A Pending CN102829091A (en) | 2012-09-07 | 2012-09-07 | Rolling auxiliary bearing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102829091A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852005A (en) * | 2006-04-30 | 2006-10-25 | 南京航空航天大学 | Super-high-speed high-power magnetic-suspension main-shaft motor |
| CN101262184A (en) * | 2008-04-29 | 2008-09-10 | 哈尔滨工业大学 | Vertical bending layer energy converter round disk stator and ultrasonic electromotor using this stator |
| CN102324822A (en) * | 2011-10-17 | 2012-01-18 | 永济新时速电机电器有限责任公司 | Variable frequency speed control three-phase asynchronous motor for high-speed rolling test bed |
| CN102437675A (en) * | 2011-10-13 | 2012-05-02 | 山东科技大学 | Energy storage device of magnetic suspension flywheel |
| US8415847B2 (en) * | 2010-05-21 | 2013-04-09 | Siemens Industry, Inc. | Induction machine bearing system |
-
2012
- 2012-09-07 CN CN2012103308706A patent/CN102829091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852005A (en) * | 2006-04-30 | 2006-10-25 | 南京航空航天大学 | Super-high-speed high-power magnetic-suspension main-shaft motor |
| CN101262184A (en) * | 2008-04-29 | 2008-09-10 | 哈尔滨工业大学 | Vertical bending layer energy converter round disk stator and ultrasonic electromotor using this stator |
| US8415847B2 (en) * | 2010-05-21 | 2013-04-09 | Siemens Industry, Inc. | Induction machine bearing system |
| CN102437675A (en) * | 2011-10-13 | 2012-05-02 | 山东科技大学 | Energy storage device of magnetic suspension flywheel |
| CN102324822A (en) * | 2011-10-17 | 2012-01-18 | 永济新时速电机电器有限责任公司 | Variable frequency speed control three-phase asynchronous motor for high-speed rolling test bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10125815B2 (en) | Rotating machine with at least one active magnetic bearing and auxiliary rolling bearings | |
| CN103233984B (en) | A kind of aiding support of vertical magnetic suspension flywheel rotor | |
| EP3004653B1 (en) | Rotating machine with at least one active magnetic bearing and spaced auxiliary rolling bearings | |
| CN105464897B (en) | Wind turbine rotor shaft arrangement | |
| EP2789865B1 (en) | Bearing for vertical axis wind turbine and vertical axis wind power generation device | |
| EP2715167B1 (en) | Segmented coast-down bearing for magnetic bearing systems | |
| HUE025337T2 (en) | Large roller bearing | |
| CN107317426B (en) | Rotation protection device of flywheel motor shafting | |
| CN102185413A (en) | Bearing structure of 2-megawatt wind driven generator | |
| CN103542036B (en) | Coming away type nuclear power station main pump flywheel | |
| CN205244137U (en) | Magnetic bearing | |
| CN102829091A (en) | Rolling auxiliary bearing system | |
| CN107612209A (en) | A kind of disc-type permanent magnet motor with novel base | |
| CN102767565B (en) | Rolling sliding integrated auxiliary bearing | |
| CN103727177B (en) | There is the nuclear power main pump flywheel of over-speed protection function | |
| CN203627648U (en) | Nuclear power main pump flywheel having overspeed protection function | |
| CN207344092U (en) | A kind of Double layer rotating pallet being used on electric cabinet module production line | |
| CN207166287U (en) | A kind of rotation protection device of fly-wheel motor shafting | |
| CN102734335A (en) | Auxiliary bearing unit of vertical magnetic suspension bearing | |
| CN103394394A (en) | Installation structure for central shaft and central shaft bracket of powder mill | |
| CN204985324U (en) | Flange bearing fast -assembling structure | |
| CN104298252A (en) | Slewing bearing provided with engineering plastic bearings | |
| WO2015057126A1 (en) | Wind turbine rotor bearing arrangement | |
| CN103401345A (en) | Novel bearing structure of wind driven generator | |
| CN103115075A (en) | Integrated thrust bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121219 |