CN201013753Y - High pressure big cornerite running-in type porous reduce section closed type air-float ball bearing - Google Patents
High pressure big cornerite running-in type porous reduce section closed type air-float ball bearing Download PDFInfo
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- CN201013753Y CN201013753Y CNU2007200107767U CN200720010776U CN201013753Y CN 201013753 Y CN201013753 Y CN 201013753Y CN U2007200107767 U CNU2007200107767 U CN U2007200107767U CN 200720010776 U CN200720010776 U CN 200720010776U CN 201013753 Y CN201013753 Y CN 201013753Y
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Abstract
The utility model relates to high pressure big cornerite running-in multiaperture reduce section closed type air ball bearing consisting of a bulb, a ball socket, an air feed plug, a locating sleeve and an anchor plug. The ball socket is provide with a single-row or multi-row air inlet pore canal, an exhaust pressure equalizing slot, an air exit hole and an air exit hole. The air feels plug, the locating sleeve and the anchor plug are arranged in the air inlet pore canal. Air enters into the bearing air file clearance through the flow passage formed by the feels plug, the locating sleeve and the anchor plug and provides supporting force to balance with the external applied load on the bulb. The air feed plug consists of a curved surface extended composite cavity or cone extended composite cavity and air inlet small holes. The beneficial effect of the utility model is that the bearing area increases thus improving the bearing capacity greatly. The air feed plug is convenient to disassemble. The phenomenon of abrupt pressure drop at the transition position between the air feed pore canal and the air film has been obviously amended. The bearing capacity of the utility model is much larger than a traditional static press air ball thrust bearing and the utility model is for the occasions of needing heavy-duty and precision heavy machinery, measuring equipment and ground air simulation equipment of large space structure.
Description
Technical field
The utility model relates to pressurized air ball bearing technical field, be a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing, be applicable to the ground air supporting Emulator of the accurate heavy machinery that needs heavy duty, high rigidity, measuring equipment, large space structure etc.
Background technique
There are two main shortcomings in the gas bearing of conventional construction: the one, and supply gas pressure is low, and bearing capacity is little, and rigidity is low; The 2nd, poor stability, along with the raising of supply gas pressure, the dynamic characteristic of bearing worsens thereupon, and air film presents negative dynamic antivibration, causes its unstability.The defective of this two aspect makes the gas bearing of conventional construction can only be used for the accurate supporting of underloading, yet development along with modern sophisticated technology, particularly in the aerospace industry large-scale satellite is put in order the full physical simulation test of star, its critical piece just provides low friction environment can bear the gaseous sphere bearing of heavy duty, if adopt traditional low pressure parcel angle air feed bearing, then sphere diameter just need be very big, and this has just increased manufacture cost and difficulty.And when bearing when subsonic speed is worked, with the raising of supply gas pressure, bearing capacity improves thereupon; When supply gas pressure further improves, occur supersonic speed in the air gap and flow and negative pressuren zone, at this moment the bearing capacity of bearing will decline to a great extent, even the bearing capacity that may occur bearing.Therefore, gas bearing artificer is the design principle of gas bearing running parameter not occur supersonic speed in the bearing play mobile often, and promptly gas bearing must work in subsonic speed, under such guiding theory, the gas bearing supply gas pressure of conventional construction is all lower, generally is not more than 6 * 10
5N/m
2, limited its application greatly in heavily loaded field.
Summary of the invention
The purpose of this utility model is to provide a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing, overcome the restriction that traditional gas bearing is subjected to supply gas pressure, optimal design by air feed plug flow road shape, the too fast pressure loss of bringing of reducing speed is kept the high pressure in the loading ability of bearing district.The gas bearing of this new structure does not have the restriction of supply gas pressure, and bearing capacity can be with the proportional improve of the raising of supply gas pressure.
The technical solution of the utility model is, a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing, by bulb 1, ball-and-socket 2, air feed plug 5, setting sleeve 6, fixing plug 7 is formed, on ball-and-socket 2, be provided with single row or multiple rows air inlet duct 9, exhaust balancing slit 3, exhaust port 4 and exhaust port 8, air feed plug 5, setting sleeve 6 and fixing plug 7 are assemblied in the air inlet duct 9, gas enters bearing air film gap via the runner of its formation, and provide supporting force, balance each other with the external load of effect on the bulb 1, air feed plug 5 is made of flaring mixing chamber and air inlet aperture 10, and the cornerite of bulb 1 and ball-and-socket 2 supporting planes is between 120 °～170 °.Described flaring mixing chamber is curve surface gradual-enlargement mixing chamber 11 or conical surface flaring mixing chamber 12.Air inlet duct 9 diameters are 4 ~ 15mm, and the diameter of exhaust port 4 and exhaust port 8 is 0.5 ~ 2mm.The cornerite of bulb 1 and ball-and-socket 2 supporting planes work efficiency under 140 °～160 ° situation is better.Air inlet duct 9 is 1～4 row.The quantity of exhaust port 4 and exhaust port 8 is respectively 3～20.
The utility model adopts the structural type of big cornerite closed bearing, processing single row or multiple rows air feed duct on ball-and-socket, the air feed plug that has taper or the air inlet of curve form flaring along the assembling of air feed duct, and make surface rationally distributing air vent and exhaust port in the bearing ball work holdup, slowed down the adverse effect that bring in air feed duct and air film transition position abrupt pressure reduction under the high pressure, keep higher middle pressure in the bearing supporting region, reach the purpose that improves bearing load carrying capacity and stability.
The beneficial effects of the utility model are: (1) owing to adopt big cornerite closed type structure, loaded area increases, thereby improves bearing capacity greatly.(2) the air feed plug can be for convenience detach, and the change of its flow passage structure and size simultaneously can enlarge the Applicable scope of bearing.(3) under high pressure and big air film operating conditions, air feed duct and air film transition position abrupt pressure reduction phenomenon be improved significantly, keep higher middle pressure in the loading ability of bearing district, bearing capacity is much larger than traditional static pressure air-bearing ball bearing, improve approximately 30～50%, and bearing capacity can improve with the raising of supply gas pressure. and being provided with of (4) air vent and exhaust port increased antiwhip.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a high pressure big angle-wrap porous section-variable closed type air-floating ball bearing assembly schematic representation.
Fig. 2 is ball-and-socket 2 working surface schematic representation.
Fig. 3 is the schematic representation with air feed plug of curve surface gradual-enlargement air inlet.
Fig. 4 has the schematic representation that the air feed plug of conical surface flaring air inlet shows.
Among the figure, 1, bulb, 2, ball-and-socket, 3, the exhaust balancing slit, 4, exhaust port, 5, the air feed plug, 6, setting sleeve, 7, fixing plug, 8, exhaust port, 9, the air inlet duct, 10, the air inlet aperture, 11, the curve surface gradual-enlargement mixing chamber, 12, conical surface flaring mixing chamber.
Embodiment
Shown in Fig. 1～4, on ball-and-socket, have single row or multiple rows air feed duct 9, wherein be equipped with air feed plug 5, setting sleeve 6, fixing plug 7, the passage that they provide working medium to flow through.Simultaneously, the ball-and-socket surface has also processed exhaust balancing slit 3, exhaust port 4 and exhaust port 8.Pressure is the air feed plug 5 of the gas of 0.3～1.5MPa via assembling in the ball-and-socket gas-entered passageway 9, and the runner that setting sleeve 6 and fixing plug 7 constitute enters bearing air film gap, and supporting force is provided, and balances each other with the external load that acts on the bulb.Owing to be processed with curve surface gradual-enlargement mixing chamber 11 and conical surface flaring mixing chamber 12 on the air feed plug 5, under high pressure and big air film operating conditions, the setting of curve surface gradual-enlargement mixing chamber 11 and conical surface flaring mixing chamber 12 and optimal design make air vent 10 outlet and air film gap transition position abrupt pressure reduction phenomenon be improved significantly, bearing load carrying capacity obviously improves.
In the bearing working process, the gas in the gap is discharged from three: one, and the same with traditional air-floating ball bearing, flow out from upper bearing gap and external environment atmosphere connecting part; Its two, gas flows out from the exhaust port 4 of ball-and-socket top balancing slit 3, its three, flow out from the exhaust port 8 of ball-and-socket bottom.Being provided with of exhaust balancing slit and exhaust hole improved antiwhip.
Claims (7)
1. high pressure big angle-wrap porous section-variable closed type air-floating ball bearing, it is characterized in that, by bulb (1), ball-and-socket (2), air feed plug (5), setting sleeve (6), fixing plug (7) is formed, on ball-and-socket (2), be provided with single row or multiple rows air inlet duct (9), exhaust balancing slit (3), exhaust port (4) and exhaust port (8), air feed plug (5), setting sleeve (6) and fixing plug (7) are assemblied in the air inlet duct (9), air feed plug (5) is made of flaring mixing chamber and air inlet aperture (10), and the cornerite of bulb (1) and ball-and-socket (2) supporting plane is between 120 °～170 °.
2. a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing according to claim 1 is characterized in that, described flaring mixing chamber is curve surface gradual-enlargement mixing chamber (11).
3. a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing according to claim 1 is characterized in that, described flaring mixing chamber is a conical surface flaring mixing chamber (12).
4. a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing according to claim 1 is characterized in that, described air inlet duct (9) diameter is 4 ~ 15mm, and the diameter of exhaust port (4) and exhaust port (8) is 0.5 ~ 2mm.
5. a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearing according to claim 1 is characterized in that, the cornerite of described bulb (1) and ball-and-socket (2) supporting plane is between 140 °～160 °.
6. according to claim 1 or 4 described a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearings, it is characterized in that described air inlet duct (9) is 1～4 row.
7. according to claim 1 or 4 described a kind of high pressure big angle-wrap porous section-variable closed type air-floating ball bearings, it is characterized in that the quantity of described exhaust port (4) and exhaust port (8) is respectively 3～20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200107767U CN201013753Y (en) | 2007-03-03 | 2007-03-03 | High pressure big cornerite running-in type porous reduce section closed type air-float ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200107767U CN201013753Y (en) | 2007-03-03 | 2007-03-03 | High pressure big cornerite running-in type porous reduce section closed type air-float ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013753Y true CN201013753Y (en) | 2008-01-30 |
Family
ID=39025543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200107767U Expired - Fee Related CN201013753Y (en) | 2007-03-03 | 2007-03-03 | High pressure big cornerite running-in type porous reduce section closed type air-float ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013753Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968077A (en) * | 2010-10-12 | 2011-02-09 | 中国计量学院 | Split type parallel microchannel radial gas static-pressure throttleer |
| CN102928158A (en) * | 2012-10-24 | 2013-02-13 | 北京航天控制仪器研究所 | Static balance testing instrument based on air flotation bearing |
| CN103216481A (en) * | 2012-01-18 | 2013-07-24 | 昆山思拓机器有限公司 | One-dimensional rotary gas pressure column |
| CN103216482A (en) * | 2012-01-18 | 2013-07-24 | 昆山思拓机器有限公司 | Positioning gas pressure column |
| CN103912583A (en) * | 2014-04-09 | 2014-07-09 | 杭州宏量科技有限公司 | Split type parallel microchannel spherical gas static pressure throttler |
| WO2020224614A1 (en) * | 2019-05-07 | 2020-11-12 | 哈尔滨工业大学 | Split-type adjustable-swing-angle aerostatic bearing device for static balancing of rotor, and gas-flotation support device for static balancing of rotating ring-shaped part |
-
2007
- 2007-03-03 CN CNU2007200107767U patent/CN201013753Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968077A (en) * | 2010-10-12 | 2011-02-09 | 中国计量学院 | Split type parallel microchannel radial gas static-pressure throttleer |
| CN101968077B (en) * | 2010-10-12 | 2011-12-28 | 中国计量学院 | Split type parallel microchannel radial gas static-pressure throttleer |
| CN103216481A (en) * | 2012-01-18 | 2013-07-24 | 昆山思拓机器有限公司 | One-dimensional rotary gas pressure column |
| CN103216482A (en) * | 2012-01-18 | 2013-07-24 | 昆山思拓机器有限公司 | Positioning gas pressure column |
| CN102928158A (en) * | 2012-10-24 | 2013-02-13 | 北京航天控制仪器研究所 | Static balance testing instrument based on air flotation bearing |
| CN102928158B (en) * | 2012-10-24 | 2015-09-23 | 北京航天控制仪器研究所 | A kind of static balancing tester based on air-bearing |
| CN103912583A (en) * | 2014-04-09 | 2014-07-09 | 杭州宏量科技有限公司 | Split type parallel microchannel spherical gas static pressure throttler |
| WO2020224614A1 (en) * | 2019-05-07 | 2020-11-12 | 哈尔滨工业大学 | Split-type adjustable-swing-angle aerostatic bearing device for static balancing of rotor, and gas-flotation support device for static balancing of rotating ring-shaped part |
| US11988252B2 (en) | 2019-05-07 | 2024-05-21 | Harbin Institute Of Technology | Split-type swing angle adjustable aerostatic bearing device for rotor static balance, and air flotation support device for static balance of rotating ring-shaped parts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 |