CN205559546U - Two -way roll formula automatically removed rotor radial clearance's protection bearing device - Google Patents
Two -way roll formula automatically removed rotor radial clearance's protection bearing device Download PDFInfo
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- CN205559546U CN205559546U CN201620191906.0U CN201620191906U CN205559546U CN 205559546 U CN205559546 U CN 205559546U CN 201620191906 U CN201620191906 U CN 201620191906U CN 205559546 U CN205559546 U CN 205559546U
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- bearing
- roller
- rotor
- protection
- rolling
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model belongs to the technical field of protection bearing device technique and specifically relates to a two -way roll formula automatically removed rotor radial clearance's protection bearing device. Include the bearing frame, radially protect bearing and rotor, should draw together antifriction bearing by a radial protection axle contracting, still include gyro wheel, annular connecting piece, flexible connectors, two -way sleeve and baffle. The utility model discloses can adjust well after magnetic suspension bearing system becomes invalid / direction changing rotor provides radial protection to can eliminate the radial clearance between rotor and the gyro wheel, just also eliminate the radial clearance between rotor and the antifriction bearing in other words, thereby eliminate high -speed rotor and fallen back vibration and impact to antifriction bearing, improve the reliability and the security of radial protection bearing, with the needs that satisfy the development of high -speed magnetic suspension bearing system.
Description
Technical field
This utility model is related to protection of bearing arrangement technical field, and a kind of bidirectional rolling type eliminates the protection bearing arrangement in rotor radial gap automatically.
Background technology
In magnetic levitation bearing system, it is generally required to a set of protection bearing (also referred to as auxiliary bearing, replacement bearing, holding bearing or emergent bearing) lost efficacy or under the emergency case such as fault as temporary support in system cut-off, overload, control system.Bidirectional rolling type eliminates the protection bearing in rotor radial gap automatically radially can bear load, it is ensured that the rotor of high speed rotating not stationary part with system collides and rubs, to ensure the safety and reliability of whole system.Traditional protection design bearing is usually and is assemblied in bearing block by rolling bearing, and the magnetic suspension bearing arranged between inner ring and the rotor of the rolling bearing required radial clearance that normally works is generally the half of rotor and radial magnetic bearing radial clearance.Therefore; being severely affected and vibrate during protection bearing working, simultaneously because rotor cannot eliminate the gap between protection bearing and rotor after falling, the ability of protection bearing opposing shock and vibration is poor; it is easily caused it to damage, so that causing the major accident that magnetic levitation bearing system damages.Therefore, protection bearing the most always governs magnetic levitation bearing system application and the principal element of development.
Owing to the rotating speed of magnetic levitation bearing system is the highest, and between rotor and protection bearing, there is bigger radial clearance, cause rotor can produce the biggest impact and vibration when dropping on protection bearing.Having a kind of method at present is by being covered with rolling bearing in rotor assembly circumference, after rotor assembly falls, by the motion of periphery rolling bearing to eliminate gap, but its structure is extremely complex, the most only support falling when rotor assembly rotates along a direction, and owing to root diameter is much larger than the diameter of periphery rolling bearing, causes and fall the Later Zhou Dynasty, one of the Five Dynasties to the rotating speed of rolling bearing much larger than himself limit speed, do not tackle the problem at its root.
Utility model content
In order to overcome the deficiency of existing technology, this utility model provides a kind of bidirectional rolling type and automatically eliminates the protection bearing arrangement in rotor radial gap.
This utility model solves its technical problem and be the technical scheme is that a kind of bidirectional rolling type eliminates the protection bearing arrangement in rotor radial gap automatically; including bearing block, radially protection bearing and rotor; this radial direction protection bearing includes rolling bearing, also includes roller, circular connector, elastic supporting member for supporting optical member, two-way sleeve and baffle plate；
Wherein:
Described rolling bearing, housing washer is installed in bearing block, by bearing gland axial compression；
Described baffle plate, axial distribution is in two-way sleeve both sides, and consistent with two-way sleeve is installed on rolling bearing inner ring in an interference fit, its axial location being intended to limit roller；
Described two-way sleeve, is installed on rolling bearing inner ring in an interference fit, and two-way sleeve inner circumferential surface configuration is the repetition arc section corresponding with roller number, and each arc section is gradually reduced to two ends by centre with the radial distance at device center；
Described roller, is axially placed in the axial centre position of two-way sleeve, and roller and device center are for being arranged concentrically, and roller outer round surface contacts with two-way sleeve interior surface, there is radially portable protective gaps L1 between roller inner circle and rotor；It addition, roller includes that the roller split of more than 2, each roller split are distributed in guide groove by both sides roller shaft；
Described circular connector, is circumferentially evenly arranged with the guide groove corresponding with roller number in circular connector；
Described elastic supporting member for supporting optical member, is arranged in circular connector between each guide groove and roller shaft, can allow the radial displacement of roller.
According to another embodiment of the present utility model, farther including, described bearing block is fixing with support to be connected, and rolling bearing is placed in bearing block.
According to another embodiment of the present utility model, farther including, described rolling bearing gland is fixedly connected with the bearing seat by screw, axial compression rolling bearing.
According to another embodiment of the present utility model, farther including, described roller split is 2-200.
According to another embodiment of the present utility model, farther including, described elastic supporting member for supporting optical member can be independent spring element, it is also possible to is structure as a whole with circular connector and is formed by processes such as line cuttings.
According to another embodiment of the present utility model, farther include, the composite that described radial direction protection bearing is metal or carbon fibers/fiberglass is made.
The beneficial effects of the utility model are; the present invention can eliminate the protection bearing arrangement of radial clearance between rotor and roller after magnetic levitation bearing system inefficacy, rotor fall automatically; also the radial clearance eliminating between rotor and rolling bearing it is equivalent to; thus eliminate after rotor falls the shock and vibration to rolling bearing; improve reliability and the safety of protection bearing, to meet high-speed magnetic levitation bearing arrangement needs.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of bidirectional rolling type of the present invention eliminates the protection bearing arrangement in rotor radial gap automatically.
Fig. 2 is the A-A sectional view in Fig. 1.
In figure: 1, rotor, 2, circular connector, 3, elastic supporting member for supporting optical member, 4, guide groove, 5, roller, 6, two-way sleeve, 7, baffle plate, 8, rolling bearing, 9, bearing gland, 10, screw, 11, bearing block.
Detailed description of the invention
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation；Technical scheme is explained below with reference to accompanying drawing.
As depicted in figs. 1 and 2; a kind of bidirectional rolling type of the present invention eliminates the protection bearing arrangement in rotor radial gap automatically; including bearing block 11, radially protection bearing and rotor 1, this radial direction protection bearing includes rolling bearing 8, roller 5, circular connector 2, elastic supporting member for supporting optical member 3, two-way sleeve 6 and baffle plate 7；Rolling bearing 8 outer ring is installed in bearing block 11, by bearing gland 9 axial compression；Two-way sleeve 6 is installed on rolling bearing 8 inner ring in an interference fit, and two-way sleeve 6 inner circumferential surface configuration is the repetition arc section corresponding with roller 5 number, and each arc section is gradually reduced to two ends by centre with the radial distance at device center；Baffle plate 7 axial distribution is in two-way sleeve 6 both sides, and consistent with two-way sleeve 6 is installed on rolling bearing 8 inner ring in an interference fit, its axial location being intended to limit roller 5；Roller 5 is axially placed in the two-way axial centre position of sleeve 6, and roller 5 and device center are for being arranged concentrically, and roller 5 outer round surface contacts with two-way sleeve 6 inner surface, there is radially portable protective gaps L1 between roller 5 inner circle and rotor 1；It addition, roller 5 includes roller 5 split of more than 2, the split of each roller 5 is distributed in guide groove 4 by both sides roller shaft；Circular connector 2 is circumferentially evenly arranged with the guide groove 4 corresponding with roller 5 number；Elastic supporting member for supporting optical member 3 is arranged in circular connector 2 between each guide groove 4 and roller 5 axle, can allow the radial displacement of roller 5；
Bearing block 11 is fixing with support to be connected, and rolling bearing 8 is placed in bearing block；Bearing gland 9 is connected by screw 10 is fixing with bearing block 11, axial compression rolling bearing 8；Roller 5 split is 2-200；Elastic supporting member for supporting optical member 3 can be independent spring element, it is also possible to is structure as a whole with circular connector 2 and is formed by processes such as line cuttings.
When magnetic suspension bearing normally works, circular connector 2 and elastic supporting member for supporting optical member 3 make all roller 5 split moment be at the centre position of two-way sleeve 6 inner surface arc section, i.e. roller 5 split position A shown in Fig. 1；Uniform gap is there is so that protection bearing arrangement does not disturb the normal rotation of rotor 1 between all roller 5 split inner circles and rotor 1.Additionally, so that the gap uniformity between the split of all rollers 5 and rotor 1 is equal, must assure that during installation that the split of each roller 5 is arranged concentrically with rotor 1, i.e. must assure that the center of rolling bearing 8, two-way sleeve 6, roller 5 and rotor 1 four is in same straight line.
It addition, in the present embodiment, the circular connector used is an annular connecting rod, and the elastic supporting member for supporting optical member used is spring or the elastomer being integrated the processes molding such as warp cutting with circular connector.
When magnetic levitation bearing system normally works, the radial clearance size between roller 5 internal circular surfaces and rotor 1 is about 0.15 mm, and both are not in contact with each other, and rotor 1 is high speed rotating, and roller 5 remains static together with rolling bearing 8 inner ring；After magnetic suspension bearing lost efficacy, rotor 1 falls, rotor 1 and part roller 5 split contact-impact, the frictional force produced between roller 5 split and rotor 1 drives roller 5 split to produce relative rolling on two-way sleeve 6 inner circumferential surface along rotor rotation direction, owing to the split of all rollers 5 is connected by circular connector 2, as long as having the split of a roller 5 to produce relative rolling with two-way sleeve 6 all, other roller 5 splits are inevitable produces identical relative rolling simultaneously；Owing to the arc section inner surface in two-way sleeve 6 is set to be gradually reduced to two ends by centre with the radial distance at device center, so when after roller 5 split with rotor 1 making contact, the split of all rollers 5 is radially proximating the central motion of device, this motion makes the gap between the split of all rollers 5 and rotor 1 reduce rapidly, when the split of all rollers 5 is all rolled at the B of position at the relative position A of two-way sleeve 6 inner surface arc section, gap between roller 5 split and rotor 1 is i.e. reduced to zero, thus eliminate the radial clearance between rotor 1 and all rollers 5 split, it is equivalent to eliminate the radial clearance between rotor 1 and rolling bearing 8 inner ring.Eliminate after rotor falls the protection impact of bearing and vibration, be remarkably improved in magnetic levitation bearing system the life-span radially protecting bearing, and rotor can be fallen along both direction rotation clockwise or counterclockwise and shields by this device.
The operation principle of the present invention is:
During installation, utilize the elastic supporting member for supporting optical member 3 acting on roller 5 split so that roller 5 split is in the initial position (position A) of two-way sleeve 6 inner surface, and makes the split of each roller 5 all in this initial position by circular connector 2 effect.When magnetic levitation bearing system is properly functioning; the split of all rollers 5 is in initial position all the time; remain static together with two-way sleeve 6, circular connector 2, elastic supporting member for supporting optical member 3 and rolling bearing 8 inner ring, now between rotor 1 and each roller 5 split, there are the normal portable protective gaps of magnetic levitation bearing system (typically about 0.15 mm).After magnetic levitation bearing system lost efficacy, rotor 1 falls rear and part roller 5 split making contact, now rotor 1 and roller 5 and between on the one hand there is the biggest relative velocity, on the other hand there is impact force effect, the frictional force that impact force between rotor 1 with roller 5 produces makes part roller 5 split take place along the relative rolling of rotor rotation direction at two-way sleeve 6 inner surface, by the effect of circular connector 2, other roller 5 splits can produce identical rolling relative to two-way sleeve 6 the most simultaneously.Owing to two-way sleeve 6 inner circumferential surface is arranged to the repetition arc section corresponding with roller 5 number; each arc section is gradually reduced to two ends by centre with the radial distance at device center; so rotor 1 and roller 5 collision rift; the split of all rollers 5 is radially proximating the central motion of device; when roller 5 along the radial distance of two-way sleeve 6 inner circumferential surface scrolls equal in magnitude with radially portable protective gaps time (roller 5 is rolled to relative position B), be equivalent to eliminate the radial clearance between rotor 1 and roller 5.Now; be equivalent to all rollers 5 together with circular connector 2, rolling bearing 8 along with rotor 1 the most still around magnetic levitation bearing system normally work time center of rotation rotate; the collision of rotor and protection bearing i.e. will not occur; also protection bearing will not be produced repeated stock and vibration, improve the life-span of protection bearing.
Claims (6)
1. a bidirectional rolling type eliminates the protection bearing arrangement in rotor radial gap automatically; including bearing block (11), radially protection bearing and rotor (1); this radial direction protection bearing includes rolling bearing (8), also includes roller (5), circular connector (2), elastic supporting member for supporting optical member (3), two-way sleeve (6) and baffle plate (7)；
Wherein:
Described rolling bearing (8), rolling bearing (8) outer ring is installed in bearing block (11), by bearing gland (9) axial compression；
Described baffle plate (7), axial distribution is in two-way sleeve (6) both sides, and consistent with two-way sleeve (6) is installed on rolling bearing (8) inner ring in an interference fit, its axial location being intended to limit roller；
It is characterized in that:
Described two-way sleeve (6), it is installed on rolling bearing (8) inner ring in an interference fit, two-way sleeve (6) inner circumferential surface configuration is the repetition arc section corresponding with roller number, and each arc section is gradually reduced to two ends by centre with the radial distance at device center；
Described roller (5); axially it is placed in two-way sleeve (6) axially centre position; roller (5) and device center are for being arranged concentrically, and roller (5) outer round surface contacts with two-way sleeve (6) inner surface, and roller (5) exists radially portable protective gaps L1 between inner circle and rotor；It addition, roller (5) includes the roller split of more than 2, each roller split is distributed in guide groove (4) by both sides roller shaft；
Described circular connector (2), is circumferentially evenly arranged with the guide groove (4) corresponding with roller number in circular connector (2)；
Described elastic supporting member for supporting optical member (3), is arranged in circular connector (2) between each guide groove (4) and roller shaft, can allow the radial displacement of roller.
Bidirectional rolling type the most according to claim 1 eliminates the protection bearing arrangement in rotor radial gap automatically, it is characterized in that, described bearing block (11) is fixing with support to be connected, and rolling bearing (8) is placed in bearing block (11).
Bidirectional rolling type the most according to claim 1 eliminates the protection bearing arrangement in rotor radial gap automatically, it is characterized in that, described bearing gland (9) is connected by screw (10) and bearing block (11) are fixing, axial compression rolling bearing (8).
Bidirectional rolling type the most according to claim 1 eliminates the protection bearing arrangement in rotor radial gap automatically, it is characterized in that, described roller split is 2-200.
Bidirectional rolling type the most according to claim 1 eliminates the protection bearing arrangement in rotor radial gap automatically; it is characterized in that; described elastic supporting member for supporting optical member (3) can be independent spring element, it is also possible to be structure as a whole with circular connector and by the structure of the processes such as line cutting.
Bidirectional rolling type the most according to claim 1 eliminates the protection bearing arrangement in rotor radial gap automatically, it is characterized in that, the composite that described radial direction protection bearing is metal or carbon fibers/fiberglass is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191906.0U CN205559546U (en) | 2016-03-14 | 2016-03-14 | Two -way roll formula automatically removed rotor radial clearance's protection bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191906.0U CN205559546U (en) | 2016-03-14 | 2016-03-14 | Two -way roll formula automatically removed rotor radial clearance's protection bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559546U true CN205559546U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620191906.0U Expired - Fee Related CN205559546U (en) | 2016-03-14 | 2016-03-14 | Two -way roll formula automatically removed rotor radial clearance's protection bearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205559546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911534A (en) * | 2020-07-01 | 2020-11-10 | 江苏理工学院 | Automatic trigger lever type bearing protection device |
-
2016
- 2016-03-14 CN CN201620191906.0U patent/CN205559546U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911534A (en) * | 2020-07-01 | 2020-11-10 | 江苏理工学院 | Automatic trigger lever type bearing protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20170314 |