CN116292621A - Elastic damping protection bearing of magnetic suspension bearing - Google Patents
Elastic damping protection bearing of magnetic suspension bearing Download PDFInfo
- Publication number
- CN116292621A CN116292621A CN202310125760.4A CN202310125760A CN116292621A CN 116292621 A CN116292621 A CN 116292621A CN 202310125760 A CN202310125760 A CN 202310125760A CN 116292621 A CN116292621 A CN 116292621A
- Authority
- CN
- China
- Prior art keywords
- bearing
- disc spring
- elastic
- ring
- radial
- 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
- 238000013016 damping Methods 0.000 title claims abstract description 23
- 239000000725 suspension Substances 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 229920001967 Metal rubber Polymers 0.000 claims description 2
- 230000036316 preload Effects 0.000 claims 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
A magnetic suspension bearing elastic damping protection bearing. The application relates to the field of magnetic suspension bearing systems, in particular to a magnetic suspension motor protection device which is used for protecting a rotor and a system under a sudden failure state of a magnetic suspension bearing and preventing damage caused by damage. The protection device comprises a supporting seat, a bearing seat, a disc spring, a pressure plate, an adjusting ring, a disc spring pressure plate, a radial elastic ring and a protection bearing; the radial direction of the protective bearing seat is tightly pressed with the bearing seat through a sealing ring or other elastic elements, the elastic damping support is axially provided through a disc spring, and the radial deformation and axial displacement of the bearing seat outer ring are rigidly limited through a tooth-shaped structure; the disc spring is axially preloaded through the sealing cover. The application proposes to elasticity damping protection bearing security and suitability.
Description
Technical Field
The invention provides a protection bearing assembly, belongs to the field of magnetic suspension bearing systems, and is used for avoiding damage to the system caused by rotor falling when a magnetic suspension bearing fails.
Background
In magnetic bearing systems, a set of protective bearings (or called auxiliary bearings, backup bearings, emergency bearings) is generally required in order to ensure the reliability and safety of the system. The purpose is to support the rotor when stationary and prevent the rotor from falling down to damage the system when the magnetic suspension bearing fails.
The conventional structure absorbs impact energy due to a radial gap between the rotor assembly and the inner race of the rolling bearing by means of an elastic damper. However, the performance requirement on the elastomer is very high, and the circumferential impact is absorbed completely by virtue of the friction force between the radial elastomer and the fixed seat, so that the service life of the elastomer and the reliability of the system are reduced.
In addition, axial impact generated when falling is absorbed through an axial spring arranged on a bearing seat in the traditional structure, and the structure cannot realize continuous adjustment on the pretightening force.
Disclosure of Invention
The technical solution of the invention is as follows: the novel protection bearing is low in cost and simple in structure, is formed by combining standard components, and can meet the requirement of a magnetic suspension bearing on high rotation speed.
The technical scheme adopted for solving the technical problems is as follows: the elastic damping protection bearing mainly comprises a supporting seat, a bearing seat, a disc spring, a sealing cover, an adjusting ring, a pressure plate, a radial elastic ring and a protection bearing. The radial direction of the bearing seat is protected to be tightly pressed with the bearing seat through a sealing ring or other elastic elements, the elastic damping support is axially provided through a disc spring, and the radial deformation and axial displacement of the bearing seat outer ring are rigidly limited through a tooth-shaped structure; the disc spring is axially preloaded by the cover.
By adopting the technical scheme, the invention has the following advantages:
the invention is applicable to various radial elastic dampers.
2 the bearing seat of the invention has rigid constraint in the circumferential direction, thereby prolonging the service life of the elastic damper and improving the reliability of the system.
The axial damping and radial vibration of the invention are isolated, and the eccentricity caused by radial vibration is avoided.
4 the axial direction of the invention can realize the continuous adjustment of the pretightening force, and is suitable for various springs.
Drawings
FIG. 1 is a cross-sectional view of a protective bearing assembly;
FIG. 2 is a view of the circumferential teeth structure of the protection bearing (hidden 3, 4, 5);
in the figure: 1. the supporting seat; 2. a bearing seat; 3. a disc spring; 4. a cover; 5. an adjusting ring; 6. a pressure plate; 7. a radial elastic ring; 8. protecting the bearing; 11. radial clearance; 21. a tooth slot structure; 61. a boss;
Detailed Description
As shown in fig. 1, a radial gap 11 is left between the bearing housing 2 and the bearing support 1, which gap is filled with an elastic ring 7 (e.g. a tolerance ring, an O-ring or a metal rubber) and provides radial damping. The sum of the radial gap 11 and the protection gap needs to be smaller than the magnetic gap of the magnetic bearing.
The bearing seat and the bearing seat are circumferentially restrained by the tooth slot form 21 shown in fig. 2, so that the friction moment applied to the elastic ring 7 can be reduced, and the structure is more reliable than that of the positioning pin.
The protection bearing 8 and the bearing seat 2 are connected together according to standard interference fit, and axial rigidity constraint in a pre-tightening state is provided through tooth grooves.
The sealing cover 4 and the adjusting ring 5 are connected to the supporting seat 1 through bolts, a pretightening force is provided for the disc spring 3, and the disc spring is connected with the protection bearing 8 through the pressure plate 6 and provides axial damping.
Radial and circumferential restraint is carried out between the pressure plate 6 and the bearing seat 2 through locating pins, tooth grooves or other structures, and a boss 61 of the pressure plate 6 provides certain concentric positioning for the disc spring 3.
The pretightening force of the disc spring on the protection bearing can be adjusted by changing the thickness of the adjusting pad.
When the magnetic bearing falls, the radial elastic ring is elastically deformed, and impact load is absorbed. When the elastic deformation is greater than the radial gap 11, the bearing housing 2 is in rigid contact with the bearing housing 1.
Claims (7)
1. The elastic damping protection bearing of the magnetic suspension bearing is characterized by comprising a supporting seat, a bearing seat, a disc spring, a sealing cover, an adjusting ring, a pressure plate, a radial elastic ring and a protection bearing; the radial direction of the protective bearing seat is tightly pressed with the bearing seat through a sealing ring or other elastic elements, the elastic damping support is axially provided through a disc spring, and the radial deformation and axial displacement of the bearing seat outer ring are rigidly limited through a tooth-shaped structure; the disc spring is axially preloaded through the sealing cover.
2. The magnetic bearing elastic damping protection bearing according to claim 1, wherein: a radial gap 11 is left between the bearing housing 2 and the bearing support 1, which gap is filled by an elastic ring 7 (e.g. tolerance ring, O-ring or metal rubber) and provides radial damping.
3. The magnetic bearing elastic damping protection bearing according to claim 1, wherein: the bearing blocks and the bearing blocks are circumferentially constrained by the spline form 21 shown in figure 2.
4. The magnetic bearing elastic damping protection bearing according to claim 1, wherein: the protection bearing 8 provides axial rigid constraint in the pre-tensioned state through the tooth slot.
5. The magnetic bearing elastic damping protection bearing according to claim 1, wherein: the cover 4 and the adjusting ring 5 are rigidly connected to the support 1 to provide a preload force to the disc spring 3, which provides axial restraint and damping to the protection bearing 8 via the pressure plate 6.
6. The magnetic bearing elastic damping protection bearing according to claim 1, wherein: the pretightening force of the disc spring 3 on the protection bearing 8 can be adjusted by changing the thickness of the adjusting pad.
7. The magnetic bearing elastic damping protection bearing according to claim 1, wherein: in conventional elastic damping bearings, the axial elastomer is typically mounted on the protective bearing housing 2 and is subject to radial vibrations. While the elastic damping protection bearing applied herein, the axial elastomeric disc spring 3 is mounted on the cover 4, decoupled axially from the radial damping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310125760.4A CN116292621A (en) | 2023-02-01 | 2023-02-01 | Elastic damping protection bearing of magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310125760.4A CN116292621A (en) | 2023-02-01 | 2023-02-01 | Elastic damping protection bearing of magnetic suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116292621A true CN116292621A (en) | 2023-06-23 |
Family
ID=86819663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310125760.4A Pending CN116292621A (en) | 2023-02-01 | 2023-02-01 | Elastic damping protection bearing of magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116292621A (en) |
-
2023
- 2023-02-01 CN CN202310125760.4A patent/CN116292621A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8308364B2 (en) | Auxiliary bearing system for magnetically supported rotor system | |
| CN108119542B (en) | Landing bearing assembly and rotary machine equipped with such an assembly | |
| CN105452672B (en) | The rotating machinery of auxiliary rolling bearing at least one active magnetic bearings and interval | |
| CN201393129Y (en) | Shock absorption structure of motor bearing system | |
| US10233968B2 (en) | Bearing device and supercharger | |
| KR20120089358A (en) | Compliant bearing mount | |
| CN113931935A (en) | Magnetic suspension bearing elastic damping protection bearing | |
| CN111711307A (en) | Bearing pre-tightening structure of motor and motor with same | |
| CN116292621A (en) | Elastic damping protection bearing of magnetic suspension bearing | |
| US8106556B2 (en) | Emergency rolling bearing that is insensitive to axial load | |
| CN215830952U (en) | Turbocharger, axial damper device, and axial damper | |
| CN111457075B (en) | Antifriction device and aircraft transmission system main reducer | |
| CN211599388U (en) | Piezoelectric type self-balancing elastic support dry friction damper of rotary machine rotor | |
| CN116457589A (en) | Mobile device damper | |
| CN108591250B (en) | Rolling bearing assembly | |
| CN217539345U (en) | Auxiliary protection device for magnetic suspension bearing | |
| JP2010281386A (en) | Sealing device, rolling bearing and rolling bearing for wheel | |
| CN217056174U (en) | Rotary speed reducer and engineering machinery | |
| JP2001082582A (en) | Pullley unit | |
| CN215170773U (en) | Mounting structure and compressor of compressor transmission shaft | |
| CN114233750A (en) | Magnetic suspension bearing auxiliary protection device | |
| WO2022172652A1 (en) | Electric compressor | |
| CN220791856U (en) | Full-floating connection structure of brake disc and brake disc | |
| CN220581514U (en) | Protective bearing device | |
| CN215950142U (en) | Suspension shaft assembly, motor, compressor, air conditioner and refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |