CN202108867U - Self-sealing dynamic gas radial ceramic bearing - Google Patents

Self-sealing dynamic gas radial ceramic bearing Download PDF

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Publication number
CN202108867U
CN202108867U CN2011202053113U CN201120205311U CN202108867U CN 202108867 U CN202108867 U CN 202108867U CN 2011202053113 U CN2011202053113 U CN 2011202053113U CN 201120205311 U CN201120205311 U CN 201120205311U CN 202108867 U CN202108867 U CN 202108867U
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China
Prior art keywords
ceramic bearing
bearing
ceramic
sleeve
cover
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Expired - Lifetime
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CN2011202053113U
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Chinese (zh)
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罗立峰
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罗立峰
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Priority to CN201120174298.X priority
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Priority to CN2011202053113U priority patent/CN202108867U/en
Application granted granted Critical
Publication of CN202108867U publication Critical patent/CN202108867U/en
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Abstract

The utility model discloses a self-sealing dynamic gas radial ceramic bearing, which includes a ceramic bearing outer sleeve, a ceramic bearing inner sleeve, big sealing stop rings and small sealing stop rings, wherein both grooves and concave holes are uniformly distributed on the outer circle of the ceramic bearing outer sleeve; regular-shaped grooved patterns are arranged on the outer circle and at the two ends of the ceramic bearing inner sleeve, and grooves are uniformly distributed on the inner circle thereof; the ceramic bearing inner sleeve is arranged in the ceramic bearing outer sleeve; the big sealing stop rings are equipped at the two ends of the ceramic bearing outer sleeve; and the small sealing stop rings are equipped at the two ends of the ceramic bearing inner sleeve. In the dynamic gas radial ceramic bearing, as the big sealing stop rings are equipped at the two ends of the ceramic bearing outer sleeve, the small sealing stop rings are equipped at the two ends of the ceramic bearing inner sleeve, the regular-shaped grooved patterns are processed at the two ends of the ceramic bearing inner sleeve, the continuously-produced dynamic gas can be satisfactorily kept in the fit clearances between the two ends of the ceramic bearing inner sleeve and the big and the small sealing stop rings as driven by a high-speed rotating shaft, and a gas film required for sealing is formed, as a result, the sealing function is achieved, and the bearing is ensured to have excellent stability and loading capacity.

Description

The selfsealings kinetic pressure gas is ceramic bearing radially
Technical field
The utility model relates to technical field of bearings, especially relates to radially ceramic bearing of a kind of high rigidity selfsealings kinetic pressure gas that can support the high speed rotary axle.
Background technique
Bearing can be divided into rolling bearing (use ball or roller), oilless bearing (use the lubricity material to rub and move), sliding bearing (using oil), gas bearing and magnetic bearing (utilizing magnetic force to do contactless action).Sliding bearing is divided into hydrodynamic bearing and hydrodynamic journal liquid polymers again, and wherein hydrodynamic bearing is that nationality comes supporting axis by slide relative motion generation oil pressure; Hydrodynamic journal liquid polymers are to come supporting axis through the high pressure oil that the bearing outside provides.Gas bearing is except using gases replaces oil, and other operating principles are identical with sliding bearing.Hydrostatic gas-lubricated bearing provides superheated steam from the outside; Move and produce pressure and hydrodynamic gas-lubricated bearing is a slide relative.
Hydrodynamic gas-lubricated bearing is as oiling agent with gas; Between axle and bearing, constitute air film; The bearing type that to be all-moving surface directly do not contact with stationary face, and have pollution-free, frictional loss is low, the adaptive temperature scope wide, running steadily, service time plurality of advantages such as length, working speed height.Because frictional loss is few, also need not use lubricating oil, therefore on the high speed rotary application, be widely used, be used in the ultra-high speed applications field and the difficult lubricating oil place that uses that are difficult to the rolling bearing support especially usually.
The direction that hydrodynamic gas-lubricated bearing is pressed bearing load is different, is divided into kinetic pressure gas radial bearing, kinetic pressure gas thrust-bearing and kinetic pressure gas radial thrust combination bearing again.
The kinetic pressure gas radial bearing is to form wedge shape space by two working surfaces that relatively move, and when they relatively move, gas is driven because of the viscous effect of himself, and is compressed in the wedge gap, produces kinetic pressure thus and bearing load.The gas dynamic pressure radial bearing of different structure form is owing to structural difference, and its working procedure is slightly different.Several kinds of comparatively common kinetic pressure gas radial bearing structural types have at present: watt formula of can inclining, slot type and paillon foil formula.
Watt formula radial dynamic pressure gas bearing that can incline is a kind of hydrodynamic gas-lubricated bearing of function admirable; Has self-regulation performance; Can be in littler air film interstice coverage trouble free service; Insensitive to thermal distortion, resiliently deformable etc., and the machining accuracy assurance that is easy to get, also the variation to load has the outstanding advantage of " from motion tracking ".Because its good stability, bearing capacity is high, is mainly used in large high-speed rotating machinery and turbomachinery at present both at home and abroad.But its bearing shell structure more complicated, mounting process is complicated, and general radial bearing requires high, thereby has limited its application.
Have performances such as yielding support, good stability though the paillon foil formula is radial gas bearing provided; But because the general employing of foil bearing is tinsel; Also there are some difficult problems on its material manufacture technology and the technology, so the application of foil bearing also is restricted.
It is fine with paillon foil formula kinetic pressure gas radial bearing stability though can incline watt,, the processing technology more complicated, practical application at present still has certain difficulty.
The slot type bearing has stability preferably, even certain stability is also arranged under zero load, moreover; Under at a high speed; Its static bearing capacity is big than the bearing of other form, be used on the miniature high-speed rotating machinery at present more, as in the precision optical machinery of gyroscope and magnetic drum and so on as bearing.
The model utility content
The purpose of the utility model provides a kind of high rigidity that can support the high speed rotary axle and reliable performance, the life-span is permanent, simple in structure, weight light and handy and excellent properties such as low cost of manufacture, and the selfsealings kinetic pressure gas that can implement industrialization ceramic bearing radially.It not only can solve existing tilting-pad radial dynamic pressure gas bearing on bearing shell structure and mounting process; Since too a complicated difficult problem caused like difficult serial problems that realizes of industrialization such as expensive, poor benefits; Simultaneously also solved aerodynamic elastic foil bearing on material preparation technology and technology, because the too much serial problem that does not reach the difficult realizations of industrialization such as designing requirement like expensive, performance that technical barrier caused.
To achieve these goals, the utility model is to have selected the raw material of the anti-carbide ceramics based composites that physical property is excellent, cost is low such as wear-resisting, high temperature resistant as bearing for use at material at first.The carbide ceramics based composites is a kind of stupalith with low cost, convenient and practical, in light weight, excellent anti friction wear, performance such as high temperature resistant; It not only can be applied in novel space flight and aviation motor; Also can be widely used in military fields such as aircraft, cruise missile, antiaircraft missile and intercontinental missile; Can also be applied to support the bearing on the high speed rotary axle, like the high-speed electric expreess locomotive bearing.
The purpose of the utility model adopts following technological scheme to be achieved:
A kind of selfsealings kinetic pressure gas is ceramic bearing radially; It is characterized in that; Comprise in ceramic bearing overcoat, the ceramic bearing and overlap, seal greatly stop ring and little sealing stop ring; The cylindrical of described ceramic bearing overcoat has equally distributed groove and equally distributed shrinkage pool, and the cylindrical of cover and two ends have regular shape in the described ceramic bearing slot type decorative pattern, interior circle have equally distributed groove, and cover is arranged in the ceramic bearing overcoat in the described ceramic bearing; Described big sealing stop ring is arranged on the two ends of ceramic bearing overcoat, and described little sealing stop ring is arranged on the two ends of cover in the ceramic bearing.Kinetic pressure gas radially ceramic bearing is fixedly mounted on the high speed rotary axle through cover in the ceramic bearing; Under the drive of high speed rotary axle; The kinetic pressure gas that produces continuously can remain in the matching gap of cover in ceramic bearing overcoat and the ceramic bearing preferably; Form the supporting required air film of axle bearing function that runs up, air film promptly as kinetic pressure gas ceramic bearing oiling agent radially, makes radially ceramic bearing stable running of high speed under pneumatically supported state of kinetic pressure gas; And provide air film required sealing function by big sealing stop ring and little sealing stop ring; Play self sealing action, promptly have the selfsealings performance, thus the kinetic pressure gas of realizing having certain stability and load-carrying ability ceramic bearing function radially.The slot type decorative pattern that the cylindrical of cover and two ends have regular shape (like the impeller shape) in the ceramic bearing; Under the drive of high speed rotary axle; The slot type decorative pattern of regular shape can produce more kinetic pressure gas and press in the matching gap of cover in ceramic bearing overcoat and the ceramic bearing, forms the more air film of high pressure.
Cover in the described ceramic bearing overcoat, ceramic bearing, seal stop ring greatly and little sealing stop ring all uses the carbide ceramics based composites to be prepared from.
The two ends of said overcoat all dispose said big sealing stop ring; The two ends of cover all dispose described little sealing stop ring in described.
Cover is 0.001~0.008mm with the matching gap of ceramic bearing overcoat in the described ceramic bearing.
The interior circle of cover has three equally distributed grooves in the described ceramic bearing; The cylindrical of described ceramic bearing overcoat has three equally distributed grooves and three equally distributed shrinkage pools, and described shrinkage pool is arranged between the groove at interval.Like this selfsealings kinetic pressure gas radially in ceramic bearing overcoat and the ceramic bearing of ceramic bearing cover can be connected with bearing support and turning axle through key respectively and fixedly mount, the while can be realized selfsealings the kinetic pressure gas radially dynamic balancing and the static balancing of ceramic bearing easily.
The utlity model has following beneficial effect:
(1) the utility model is owing to selected the manufactured materials of carbide ceramics based composites as bearing for use; Through the characteristics of selflubricating that material self had, anti-superior physical properties such as wear-resisting, high temperature resistant, thus the kinetic pressure gas of the utility model radially ceramic bearing have simple in structure, easy for installation, financial cost is cheap, practical, characteristics such as industrialized implementation is easy.
(2) the utility model is because the slot type decorative pattern that cylindrical that in ceramic bearing, overlaps and two ends all are processed with regular shape; So under the drive of high speed rotary axle; The kinetic pressure gas that produces continuously can remain in the matching gap of cover cylindrical in interior circle of ceramic bearing overcoat and the ceramic bearing preferably; And form the supporting required air film of axle bearing function that runs up, thereby realize having certain stability and load-carrying ability.
(3) the utility model is owing to all be equipped with big sealing stop ring at the two ends of ceramic bearing overcoat; The cover two ends all are equipped with little sealing stop ring in ceramic bearing; And the two ends of in ceramic bearing, overlapping are processed with the slot type decorative pattern of regular shape, and under the drive of high speed rotary axle, the kinetic pressure gas that produces continuously can remain in the matching gap at cover two ends and big sealing stop ring and little sealing stop ring in the ceramic bearing preferably; And the required air film of formation sealing function; Play self sealing action, promptly have the selfsealings performance, thereby guarantee bearing good stable property and load-carrying ability.
Description of drawings
Fig. 1 is the utility model embodiment's a plan view,
Fig. 2 is the utility model embodiment's a side view,
Fig. 3 is the A-A sectional drawing of Fig. 2,
Fig. 4 is the B-B sectional drawing of Fig. 3.
Embodiment
Shown in Fig. 1-4; The selfsealings kinetic pressure gas of the utility model mode of execution is ceramic bearing radially; Include the ceramic bearing overcoat 1 and the interior cover 4 of ceramic bearing of Spielpassung, cover 4 is 0.001~0.008mm with the matching gap of ceramic bearing overcoat 1 in the ceramic bearing.The slot type decorative pattern that the cylindrical of cover 4 and two ends are provided with regular shape in the ceramic bearing; The slot type decorative pattern of this regular shape makes in ceramic bearing overcoat 1 and the ceramic bearing and forms wedge shape space between the cover 4; When the 4 relative ceramic bearing overcoats 1 of cover in the ceramic bearing rotate; Gas is driven because of the viscous effect of himself, and is compressed in the wedge gap, produces kinetic pressure thus and 4 rotations of supporting ceramic bearing inner sleeve.The slot type decorative pattern at cover 4 two ends is symmetrical set in the ceramic bearing, and the slot type decorative pattern is the impeller shape evenly to be laid, and every groove extends to cylindrical by the interior circle that overlaps 4 in the ceramic bearing always.Under the drive of high speed rotary axle, the slot type decorative pattern of regular shape can produce more kinetic pressure gas and press in the matching gap of cover 4 in ceramic bearing overcoat 1 and the ceramic bearing, forms the more air film of high pressure.The cylindrical of ceramic bearing overcoat 1 has equally distributed groove 5 and three equally distributed shrinkage pools 6, seals the two ends that stop ring 2 is arranged on ceramic bearing overcoat 1 greatly, seals the matching gap of cover 4 in ceramic bearing overcoat 1 and the ceramic bearing.The interior circle of cover 4 has three equally distributed grooves 7 in the ceramic bearing, and little sealing stop ring 3 is through being fixed on the two ends that are configured in cover 4 in the ceramic bearing on the turning axle.
The interior circle of cover 4 offers three equally distributed grooves 7 in the ceramic bearing, and the cylindrical of ceramic bearing overcoat 1 offers three equally distributed grooves 5 and three equally distributed shrinkage pools 6 simultaneously.The ceramic bearing overcoat 1 of bearing can be connected and bearing support and turning axle fixed installation through key respectively with the interior cover 4 of ceramic bearing like this, can keep the dynamic balancing and the static balancing of bearing simultaneously, makes bearing operation more steady.
For make kinetic pressure gas radially ceramic bearing possess excellent anti-wear wearing and tearing, heat-resisting quantity, cover 4 in ceramic bearing overcoat 1, the ceramic bearing, seal stop ring 2 greatly and little sealing stop ring 3 all uses the carbide ceramics based composites to be prepared from.
The utility model is owing to the cylindrical of cover 4 in ceramic bearing and the slot type decorative pattern that two ends all are processed with regular shape; So under the drive of high speed rotary axle; The kinetic pressure gas that produces continuously can remain in the matching gap of cover 4 cylindricals in ceramic bearing overcoat 1 interior circle and the ceramic bearing preferably; And the required air film of axle bearing function that runs up is supported in formation; Air film makes bearing stable running of high speed under pneumatically supported state promptly as kinetic pressure gas radial bearing oiling agent, and realizes having certain stability and load-carrying ability.In addition; The utility model is owing to all be equipped with big sealing stop ring 2 at the two ends of ceramic bearing overcoat 1, and cover 4 two ends all are equipped with little sealing stop ring 3 in ceramic bearing, and the two ends of cover 4 are processed with the slot type decorative pattern of regular shape in ceramic bearing; Under the drive of high speed rotary axle; The kinetic pressure gas that produces continuously can remain in the matching gap of overlapping 4 two ends and big sealing stop ring 2 and little sealing stop ring 3 in the ceramic bearing preferably, and the required air film of formation sealing function, plays self sealing action; Promptly have the selfsealings performance, thereby guarantee bearing good stable property and load-carrying ability.

Claims (5)

1. selfsealings kinetic pressure gas ceramic bearing radially; It is characterized in that; Comprise cover (4) in the ceramic bearing overcoat (1), ceramic bearing, seal stop ring (2) and little sealing stop ring (3) greatly; The cylindrical of described ceramic bearing overcoat (1) has equally distributed groove (5) and equally distributed shrinkage pool (6); Cylindrical and the slot type decorative pattern that two ends have regular shape, the interior circle of cover (4) have equally distributed groove (7) in the described ceramic bearing; Cover (4) is arranged in ceramic bearing overcoat (1) in the described ceramic bearing, and described big sealing stop ring (2) is arranged on the two ends of ceramic bearing overcoat (1), and described little sealing stop ring (3) is arranged on the two ends of cover (4) in the ceramic bearing.
2. selfsealings kinetic pressure gas according to claim 1 is ceramic bearing radially; It is characterized in that, cover (4) in the described ceramic bearing overcoat (1), ceramic bearing, seal stop ring (2) greatly and little sealing stop ring (3) all uses the carbide ceramics based composites to be prepared from.
3. selfsealings kinetic pressure gas according to claim 1 is ceramic bearing radially; It is characterized in that; The cylindrical of described ceramic bearing overcoat (1) has three equally distributed grooves (5) and three equally distributed shrinkage pools (6), and described shrinkage pool (6) is arranged between the groove (5) at interval.
4. selfsealings kinetic pressure gas according to claim 1 is ceramic bearing radially, it is characterized in that, the interior circle of cover (4) has three equally distributed grooves (7) in the described ceramic bearing.
5. according to each described selfsealings kinetic pressure gas of claim 1-4 ceramic bearing radially, it is characterized in that cover (4) is 0.001~0.008mm with the matching gap of ceramic bearing overcoat (1) in the described ceramic bearing.
CN2011202053113U 2011-05-27 2011-06-17 Self-sealing dynamic gas radial ceramic bearing Expired - Lifetime CN202108867U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201120174298 2011-05-27
CN201120174298.X 2011-05-27
CN2011202053113U CN202108867U (en) 2011-05-27 2011-06-17 Self-sealing dynamic gas radial ceramic bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202053113U CN202108867U (en) 2011-05-27 2011-06-17 Self-sealing dynamic gas radial ceramic bearing

Publications (1)

Publication Number Publication Date
CN202108867U true CN202108867U (en) 2012-01-11

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CN2011202053113U Expired - Lifetime CN202108867U (en) 2011-05-27 2011-06-17 Self-sealing dynamic gas radial ceramic bearing

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278366A (en) * 2011-05-27 2011-12-14 罗立峰 Self-sealing dynamic-pressure gas radial ceramic bearing
CN105202014A (en) * 2015-05-19 2015-12-30 罗立峰 Slot type dynamic pressure gas radial bearing
WO2016183786A1 (en) * 2015-05-19 2016-11-24 罗立峰 Mixed-type dynamic pressure gas radial bearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102278366A (en) * 2011-05-27 2011-12-14 罗立峰 Self-sealing dynamic-pressure gas radial ceramic bearing
CN105202014A (en) * 2015-05-19 2015-12-30 罗立峰 Slot type dynamic pressure gas radial bearing
WO2016183786A1 (en) * 2015-05-19 2016-11-24 罗立峰 Mixed-type dynamic pressure gas radial bearing
EA035325B1 (en) * 2015-05-19 2020-05-28 Лифэн Ло Hybrid dynamic pressure gas radial bearing

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 201899 No. 215 Chengbei Road, Shanghai, Jiading District

Patentee after: Luo Lifeng

Address before: 510080, room 25, 809 East Lake Road, Yuexiu District, Guangdong, Guangzhou, China

Patentee before: Luo Lifeng

Address after: 201899 No. 215 Chengbei Road, Shanghai, Jiading District

Patentee after: Luo Lifeng

Address before: 510080, room 25, 809 East Lake Road, Yuexiu District, Guangdong, Guangzhou, China

Patentee before: Luo Lifeng

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120111