CN202402483U - Static pressure air bearing - Google Patents
Static pressure air bearing Download PDFInfo
- Publication number
- CN202402483U CN202402483U CN201120559044XU CN201120559044U CN202402483U CN 202402483 U CN202402483 U CN 202402483U CN 201120559044X U CN201120559044X U CN 201120559044XU CN 201120559044 U CN201120559044 U CN 201120559044U CN 202402483 U CN202402483 U CN 202402483U
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- China
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- main body
- bearing
- fumarole
- bonnet
- protecgulum
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- Withdrawn - After Issue
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Abstract
The utility model relates to a static pressure air bearing which comprises a tubular bearing main body. A rotor is rotatably installed in the bearing body, a front cover is fixed on a right-side shaft end of the bearing main body and a rear cover is fixed at a left-side shaft end of the bearing main body. Screwed holes coaxial with an air injection hole in a rear cover are arranged in the rear cover one the left side of a rear cover air chamber. An air outlet is arranged in the rear cover along the axial direction, bolts are installed in all the screwed holes, a rotor air chamber is arranged in a rotor, a radial air outlet hole is arranged in the rotor along the radial direction, a circular ring is arranged on around walls of the rotor, an axial air outlet is arranged at the left end of the rotor along the axial direction, and a circular concave groove is arranged on the left end surface of the rotor. The static pressure air bearing solves the problem that in the process of operation, a conventional air bearing is easily in direct contact with boundary solids caused by a radial air film so as to be locked, so that the bearing and a main shaft are damaged, and meets the condition that the bearing operates by bearing radial load and axial load.
Description
Technical field
The utility model relates to high speed rotary machinery and ultraprecise Instrument technology field, the utility model discloses a kind of static-pressure air bearing.
Background technique
Air-bearing is exactly a viscosity of utilizing gas, improves the pressure of gas in the gap, thereby axle suspension is floated next bearing, and it is a new high-tech product that develops rapidly mid-term in 20th century.Air-bearing relies on air lubrication, compares with the oily lubricating bearings of routine (rolling bearing or oily sliding bearing), and it has a lot of good characteristics: friction factor and friction torque are very little; The gas supporting can be worked under the state that cleans most; Characteristics with cold conditions work, the motion wear rate is almost equal to zero, and noise is low, vibration is little, precision is high, the life-span is long; Can in very wide temperature range and rugged environment, work, can keep very little gap.Therefore be widely used in industries such as national defence, the energy, lathe and medical treatment, especially obvious superiority more arranged at high speed rotary machinery and ultraprecise Instrument technology field.
Air-bearing is divided into static-pressure air bearing and kinetic pressure air-float bearing of inner.Static-pressure air bearing does not have specific requirement to rotating speed, and kinetic pressure air-float bearing of inner then requires rotor speed to reach the effect of certain value competence exertion, and therefore, static-pressure air bearing has obtained using widely.Static-pressure air bearing is a viscosity of utilizing air; The fully dry back of also filtering of the pressurized air of outside is imported in the bearing play through some fumaroles of opening on bearing working face by suction port; Make to have constrictive air between bearing and the rotor abrim, and come support load and realize steadily action by the pressure air film that forms.
Traditional static-pressure air bearing is because gas enters atmosphere from the bearing outward edge continuously; So air does not have the boundary lubrication ability, in the course of the work, in case if the pneumatic bearing load has surpassed the limit of regulation; Direct contact and the locking of solid can take place at once; Cause bearing and main shaft impaired, and it can only bear radial load, for existing radial load have again axial load situation it can not meet the demands.In addition, owing to contain particulate matters such as particulate, bisque in the air, when air is pressed in the process of bearing play; These particulate matters are deposited on around the fumarole easily; Of long duration just fumarole is stopped up, gas can't be arrived between bearing and the rotor smoothly, thereby cause rotor can not balance to float occurring serious bumping to rub and shake; Rotor occur vibration or part bump rub or external disturbance under; The atmospheric pressure effect of two ends of rotor is equity no longer, thereby has reduced the bearing capacity of static-pressure air bearing, has promptly reduced the reliability of high-speed rotating machine.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the existing technology, provides a kind of and can bear radial and axial load and the high static-pressure air bearing of rotation reliability simultaneously.
According to the technological scheme that the utility model provides, said static-pressure air bearing comprises the bearing main body of pipe shape in bearing main body, being rotatablely equipped with rotor that axle head is fixed with protecgulum on the right side of bearing main body, and axle head is fixed with bonnet in the left side of bearing main body; In the wall body of bearing main body, offer the main body air chamber, in protecgulum, offer the protecgulum air chamber, in bonnet, offer the bonnet air chamber; The protecgulum air chamber is communicated with the main body air chamber, and the bonnet air chamber is communicated with the main body air chamber, radially offers the main body fumarole along it on the bearing main body in the main body air chamber; In the bearing main body in the main body air chamber outside, offer tapped hole with the coaxial setting of main body fumarole; The main body fumarole is communicated with the main body air chamber, in the protecgulum in protecgulum air chamber left side, axially offers the protecgulum fumarole along it, in the protecgulum on protecgulum air chamber right side, offers the tapped hole with the coaxial setting of protecgulum fumarole; The protecgulum fumarole is communicated with the protecgulum air chamber; In the bonnet on bonnet air chamber right side, axially offer the bonnet fumarole along it, in the bonnet in bonnet air chamber left side, offer the tapped hole with the coaxial setting of bonnet fumarole, the bonnet fumarole is communicated with the bonnet air chamber; In bonnet, axially offer the air outlet, screw all is installed in all tapped holes along it; Outer wall one at bearing main body is fixed with circular convexity, on this circular convexity, radially offers suction port along it, on this circular convexity, axially offers fixed hole along it; In rotor, offer the rotor air chamber; In rotor, radially offer radially air outlet hole along it, on the perisporium of rotor, offer annular groove, radially air outlet hole is communicated with annular groove; Left part at rotor axially offers axial air outlet hole along it; Offer circular Baltimore groove in the left side of rotor, axially air outlet hole is connected with circular Baltimore groove, and should be connected with the air outlet by the circle Baltimore groove.
Said main body fumarole is even layout around the axis of bearing main body, and the aperture of main body fumarole is 0.1 ~ 0.2mm.
Said protecgulum fumarole is even layout around the axis of protecgulum, and the aperture of protecgulum fumarole is 0.1 ~ 0.2mm.
Said bonnet fumarole is even layout around the axis of bonnet, and the aperture of bonnet fumarole is 0.1 ~ 0.2mm.
Said axial air outlet hole is offered along the axial direction of rotor.
The beneficial effect that the utility model adopts technique scheme to obtain is:
1, solved traditional air-bearing in the course of the work; Owing to only receiving air film radially to make bearing that direct contact and the locking of border solid take place easily; Cause the impaired problem of bearing and main shaft, and can satisfy the situation that bearing is worked by radial load and axial load together;
2, solve fumarole and stopped up the bearing that causes and with rotor clearance air pressure inequality serious the bumping of rotor appearance rubbed and shake, improved the reliability of bearing high speed rotating.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
As shown in the figure, the utility model mainly by bearing main body 101, rotor 102, protecgulum 103, bonnet 104, suction port 105, fixed hole 106, tapped hole 107, main body fumarole 108, air outlet 109, screw 110, axially air outlet hole 111, main body air chamber 112, protecgulum air chamber 113, bonnet air chamber 114, protecgulum fumarole 115, bonnet fumarole 116, rotor air chamber 117, radially parts such as air outlet hole 118, annular groove 119 and circular Baltimore groove 120 constitute.
This static-pressure air bearing comprises the bearing main body 101 of pipe shape in bearing main body 101, being rotatablely equipped with rotor 102 that axle head is fixed with protecgulum 103 on the right side of bearing main body 101, and axle head is fixed with bonnet 104 in the left side of bearing main body 101; In the wall body of bearing main body 101, offer main body air chamber 112; In protecgulum 103, offer protecgulum air chamber 113; In bonnet 104, offer bonnet air chamber 114; Protecgulum air chamber 113 is communicated with main body air chamber 112, and bonnet air chamber 114 is communicated with main body air chamber 112, radially offers main body fumarole 108 along it on the bearing main body 101 in main body air chamber 112; In the bearing main body 101 in main body air chamber 112 outsides, offer tapped hole 107 with the 108 coaxial settings of main body fumarole; Main body fumarole 108 is communicated with main body air chamber 112, in the protecgulum 103 in protecgulum air chamber 113 left sides, axially offers protecgulum fumarole 115 along it, in the protecgulum 103 on protecgulum air chamber 113 right sides, offers the tapped hole 107 with the 115 coaxial settings of protecgulum fumarole; Protecgulum fumarole 115 is communicated with protecgulum air chamber 113; In the bonnet 104 on bonnet air chamber 114 right sides, axially offer bonnet fumarole 116 along it, in the bonnet 104 in bonnet air chamber 114 left sides, offer the tapped hole 107 with the 116 coaxial settings of bonnet fumarole, bonnet fumarole 116 is communicated with bonnet air chamber 114; In bonnet 104, axially offer air outlet 109, in all tapped holes 107, screw 110 is installed all along it; Outer wall one at bearing main body 101 is fixed with circular convexity, on this circular convexity, radially offers suction port 105 along it, on this circular convexity, axially offers fixed hole 106 along it; In rotor 102, offer rotor air chamber 117; In rotor 102, radially offer radially air outlet hole 118 along it, on the perisporium of rotor 102, offer annular groove 119, radially air outlet hole 118 is communicated with annular groove 119; Left part at rotor 102 axially offers axial air outlet hole 111 along it; Offer circular Baltimore groove 120 in the left side of rotor 102, axially air outlet hole 111 is connected with circular Baltimore groove 120, and should be connected with air outlet 109 by circle Baltimore groove 120.
Said main body fumarole 108 is even layout around the axis of bearing main body 101, and the aperture of main body fumarole 108 is 0.1 ~ 0.2mm.
Said protecgulum fumarole 115 is even layout around the axis of protecgulum 103, and the aperture of protecgulum fumarole 115 is 0.1 ~ 0.2mm.
Said bonnet fumarole 116 is even layout around the axis of bonnet 104, and the aperture of bonnet fumarole 116 is 0.1 ~ 0.2mm.
Said axial air outlet hole 111 is offered along the axial direction of rotor 102.
Evenly be provided with on the bearing main body 101 of the utility model static-pressure air bearing on main body fumarole 108 and the protecgulum 103 and evenly be provided with protecgulum fumarole 115; When bearing suction port 105 feeds pressurized air; Can form the pressure air film at the constrictive air that axially and radially all is full of of rotor 102, rotor 102 is suspended.
The bearing main body 101 of the utility model static-pressure air bearing, protecgulum 103 and bonnet 104 are outside evenly, concentric ring is established tapped hole 107, can be on tapped hole 107 setting pressure table, monitoring bearing air pressure inside situation in real time.If inner main body fumarole 108, protecgulum fumarole 115 or the bonnet fumarole 116 of bearing stops up; When behind bearing suction port 105 bubbling airs; It is unbalance that blocked fumarole place has of short duration air pressure; Can be installed in outside pressure gauge through this place and detect, after finding that fumarole stops up, can in time draw the fumarole that stops up logical through outside fumarole with instrument.
Claims (5)
1. static-pressure air bearing; It is characterized in that: the bearing main body (101) that comprises the pipe shape; In bearing main body (101), be rotatablely equipped with rotor (102); Right side axle head at bearing main body (101) is fixed with protecgulum (103), is fixed with bonnet (104) at the left side axle head of bearing main body (101); In the wall body of bearing main body (101), offer main body air chamber (112); In protecgulum (103), offer protecgulum air chamber (113); In bonnet (104), offer bonnet air chamber (114); Protecgulum air chamber (113) is communicated with main body air chamber (112); Bonnet air chamber (114) is communicated with main body air chamber (112); Bearing main body (101) in main body air chamber (112) is gone up and radially to be offered main body fumarole (108) along it, in the bearing main body (101) in main body air chamber (112) outside, offers the tapped hole (107) with the coaxial setting of main body fumarole (108), and main body fumarole (108) is communicated with main body air chamber (112); In the protecgulum (103) in protecgulum air chamber (113) left side, axially offer protecgulum fumarole (115) along it; In the protecgulum (103) on protecgulum air chamber (113) right side, offer the tapped hole (107) with the coaxial setting of protecgulum fumarole (115), protecgulum fumarole (115) is communicated with protecgulum air chamber (113), in the bonnet (104) on bonnet air chamber (114) right side, axially offers bonnet fumarole (116) along it; In the bonnet (104) in bonnet air chamber (114) left side, offer tapped hole (107) with the coaxial setting of bonnet fumarole (116); Bonnet fumarole (116) is communicated with bonnet air chamber (114), in bonnet (104), axially offers air outlet (109) along it, and screw (110) all is installed in all tapped holes (107); Outer wall one at bearing main body (101) is fixed with circular convexity, on this circular convexity, radially offers suction port (105) along it, on this circular convexity, axially offers fixed hole (106) along it; In rotor (102), offer rotor air chamber (117); In rotor (102), radially offer radially air outlet hole (118) along it; On the perisporium of rotor (102), offer annular groove (119); Radially air outlet hole (118) is communicated with annular groove (119), axially offers axial air outlet hole (111) in the left part of rotor (102) along it, offers circular Baltimore groove (120) in the left side of rotor (102); Axially air outlet hole (111) is connected with circular Baltimore groove (120), and should be connected with air outlet (109) by circle Baltimore groove (120).
2. static-pressure air bearing as claimed in claim 1 is characterized in that: said main body fumarole (108) is even layout around the axis of bearing main body (101), and the aperture of main body fumarole (108) is 0.1 ~ 0.2mm.
3. static-pressure air bearing as claimed in claim 1 is characterized in that: said protecgulum fumarole (115) is even layout around the axis of protecgulum (103), and the aperture of protecgulum fumarole (115) is 0.1 ~ 0.2mm.
4. static-pressure air bearing as claimed in claim 1 is characterized in that: said bonnet fumarole (116) is even layout around the axis of bonnet (104), and the aperture of bonnet fumarole (116) is 0.1 ~ 0.2mm.
5. static-pressure air bearing as claimed in claim 1 is characterized in that: said axial air outlet hole (111) is offered along the axial direction of rotor (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120559044XU CN202402483U (en) | 2011-12-28 | 2011-12-28 | Static pressure air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120559044XU CN202402483U (en) | 2011-12-28 | 2011-12-28 | Static pressure air bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402483U true CN202402483U (en) | 2012-08-29 |
Family
ID=46700133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120559044XU Withdrawn - After Issue CN202402483U (en) | 2011-12-28 | 2011-12-28 | Static pressure air bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402483U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494025A (en) * | 2011-12-28 | 2012-06-13 | 元亮科技有限公司 | Static-pressure gas bearing |
| CN103016530A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Rotary air supply device unaffected by air pipe bending disturbance |
| CN106763192A (en) * | 2017-03-31 | 2017-05-31 | 河北工业大学 | Radial and axial power can be born and with the floating-ring bearing of automatic reverse oil supply function |
| CN114294328A (en) * | 2021-12-28 | 2022-04-08 | 中国航天空气动力技术研究院 | Air-floating type load reversing device with thrust function |
-
2011
- 2011-12-28 CN CN201120559044XU patent/CN202402483U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494025A (en) * | 2011-12-28 | 2012-06-13 | 元亮科技有限公司 | Static-pressure gas bearing |
| CN102494025B (en) * | 2011-12-28 | 2013-08-28 | 元亮科技有限公司 | Static-pressure gas bearing |
| CN103016530A (en) * | 2012-12-31 | 2013-04-03 | 浙江工业大学 | Rotary air supply device unaffected by air pipe bending disturbance |
| CN103016530B (en) * | 2012-12-31 | 2014-12-10 | 浙江工业大学 | Rotary air supply device unaffected by air pipe bending disturbance |
| CN106763192A (en) * | 2017-03-31 | 2017-05-31 | 河北工业大学 | Radial and axial power can be born and with the floating-ring bearing of automatic reverse oil supply function |
| CN114294328A (en) * | 2021-12-28 | 2022-04-08 | 中国航天空气动力技术研究院 | Air-floating type load reversing device with thrust function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20130828 |
|
| RGAV | Abandon patent right to avoid regrant |