CN215257366U - Foil modularized mounted dynamic pressure gas thrust bearing - Google Patents
Foil modularized mounted dynamic pressure gas thrust bearing Download PDFInfo
- Publication number
- CN215257366U CN215257366U CN202120625676.5U CN202120625676U CN215257366U CN 215257366 U CN215257366 U CN 215257366U CN 202120625676 U CN202120625676 U CN 202120625676U CN 215257366 U CN215257366 U CN 215257366U
- Authority
- CN
- China
- Prior art keywords
- foil
- tile
- elastic support
- bearing
- support bottom
- 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.)
- Active
Links
Images
Landscapes
- Support Of The Bearing (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a foil modularized mounted dynamic pressure gas thrust bearing, which comprises a bearing seat, a tile, a countersunk head screw, a flat head screw, an elastic support bottom foil and a top foil; the elastic support bottom foil and the top foil are both composed of a straight section and a duty section, and the duty section is vertical to the straight section and is provided with a screw through hole; the tile is fan-shaped, and threaded holes are formed in the bottom and the side of the tile; the elastic support bottom foil and the top foil are fixed on the side part of the tile through flat head screws; countersunk screw holes are uniformly distributed on the bearing seat along the circumferential direction; the pads are uniformly fixed on the bearing seat through countersunk screws; the bearing seat, the tile, the elastic support bottom foil and the top foil are sequentially stacked and arranged. The utility model discloses a modular split type structure compares integral welded structure, and the technology degree of difficulty is low, and the local replacement of being convenient for and quick installation easily realize standardization and line production, have solved the problem that current foil dynamic pressure gas footstep bearing installation accuracy and cost of manufacture are high.
Description
Technical Field
The utility model relates to a high-speed rotating machinery and gas lubrication field, concretely relates to gaseous footstep bearing of dynamic pressure of foil piece modularization installation.
Background
The foil dynamical pressure gas bearing has good stability, reliability and impact resistance at high speed, is widely applied to various high-speed rotating machines such as high-speed turbojet engines, high-speed turboexpanders, high-speed oil-free centrifugal air compressors of fuel cell automobile oxygen supply systems, airplane environment control systems and the like, and has very wide development prospect. However, the foil dynamical pressure gas bearing is difficult to model through accurate theoretical analysis, and the theoretical analysis lags behind the test. Different researchers adopt a matching design method to design the bearing, so that the structure of the foil dynamic pressure gas bearing is continuously changed, and no standardization and serialization universality criterion exists.
The existing foil dynamic pressure gas thrust bearing mostly adopts a centralized and integral manufacturing method. The centralized manufacturing method is that the elastic supporting bottom foil and the elastic supporting top foil are divided into a plurality of pieces and are directly welded on the bearing seat. The foil dynamic pressure gas thrust bearing manufactured by the method has high installation precision requirement, high process difficulty and high defective rate. In the integral manufacturing method, the elastic support bottom foil and the elastic support top foil are respectively integral pieces and are formed by integral stamping. The foil dynamic pressure gas thrust bearing manufactured by the method has the advantages of poor interchangeability, high defective rate, uneven bearing capacity and slow heat dissipation. By adopting a centralized or integrated manufacturing method, the whole bearing needs to be replaced when the foil is damaged, which greatly increases the cost. Therefore the utility model discloses an gaseous footstep bearing of dynamic pressure of foil piece modularization installation has effectively solved above problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gaseous footstep bearing of dynamic pressure of foil piece modularization installation, it adopts the module of distributing type to be convenient for with the timely replacement of series, and the bearing installation degree of difficulty obtains decomposing, has effectively solved current gaseous footstep bearing of foil piece dynamic pressure and has had the processing assembly difficulty, the defective percentage is high, the reliability is low, the bearing capacity is inhomogeneous, the slow performance defect of heat dissipation and installation accuracy height, cost of manufacture big scheduling problem in the manufacture process, and easily realizes standardization and line production.
The utility model provides a following technical scheme:
the utility model discloses a gaseous footstep bearing of dynamic pressure of foil piece modularization installation, including bearing frame, tile, countersunk screw, flat head screw, elastic support bottom foil and top foil. The elastic support bottom foil and the top foil are fan-shaped and both consist of a flat section of a working plane and a space filling section for fastening and positioning a flat head screw, the space filling section is vertical to the flat section, and the space filling section is provided with a screw through hole; the tile is fan-shaped, and the bottom and the side are respectively provided with a threaded hole; the elastic support bottom foil and the top foil are fixed on the side part of the tile through flat head screws; countersunk screw holes are uniformly distributed on the bearing seat along the circumferential direction; the tile blocks are uniformly distributed on the bearing seat and are fastened and positioned through countersunk screws; the bearing seat, the tile, the elastic support bottom foil and the top foil are sequentially stacked and arranged.
Furthermore, the elastic supporting bottom foil and the top foil are overlapped in outline, and can be of a wave foil type, a metal wire mesh type or a bubbling type.
Further, the tile top and bottom planes are parallel; the threaded hole formed at the bottom of the tile can be a blind hole or a through hole; the threaded holes formed in the side parts of the tiles are blind holes, and the number of the threaded holes is multiple.
Furthermore, an inner ring of the elastic support bottom foil and an inner ring of the top foil which are fixed through the flat head screws are coincided with the inner cylindrical surface of the tile, and the occupied sections of the elastic support bottom foil and the top foil are coincided with the side surface of the tile.
Furthermore, the pads are uniformly distributed on the bearing seat, so that the bearing seat can be equally divided into multiple parts; a micro gap is formed between each tile and the flat head screw of the adjacent tile, and the micro gaps are used for ensuring that the tiles are installed and centered uniformly.
The utility model provides a pair of gaseous footstep bearing of dynamic pressure of foil piece modularization installation, elastic support bottom foil and top foil pass through the flat head screw to be fixed on the tile in proper order, and tile and bearing frame pass through countersunk screw fastening and location. When a certain foil unit is damaged in the using process, the foil can be replaced independently, the tile and the undamaged foil can still be used for multiple times, the foil unit can achieve the purpose of serial replacement, and the defective rate, the processing and assembling difficulty and the using cost are reduced. The pads are uniformly distributed on the bearing seat, so that the bearing capacity uniformity of the bearing can be improved. The processing and assembling difficulty of the bearing is decomposed, the installation uniformity and the efficiency are improved, and the mass production and the processing are easy. Generally the utility model provides a pair of gaseous footstep bearing of foil piece modularization installation can effectively solve current gaseous footstep bearing of foil piece dynamic pressure and have processing assembly difficulty, defective percentage height, reliability low, bearing capacity inhomogeneous, the slow performance defect of heat dissipation and installation accuracy height, the big scheduling problem of cost of manufacture in the manufacture process, and easily realize standardization and line production.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, further features, objects, and advantages of the invention will become apparent. The drawings and their description of the invention are intended to illustrate the invention and do not constitute an undue limitation on the invention. In the drawings:
fig. 1 is a front view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the tile, spring support bottom foil and top foil fastening and positioning of the present invention;
fig. 4 is a schematic structural view of the bearing seat of the present invention;
FIG. 5 is a schematic view of the bearing seat and the pad bolt fastening and positioning of the present invention;
according to the utility model discloses a gaseous footstep bearing of dynamic pressure of foil piece modularization installation, the reference numeral explains:
1. a bearing seat; 11. fixing grooves; 12. countersunk screw holes; 2. countersunk head screws; 3. a tile; 31. a threaded hole is formed in the bottom of the tile; 32. threaded holes in the side parts of the tiles; 4. a resilient support base foil; 41. an elastic support bottom foil occupying section; 42. elastically supporting the bottom foil working section; 43. the elastic support bottom foil occupies the screw through hole of the section; 5. a top foil; 51. a top foil footprint; 52. a top foil working section; 53. the top foil fills the segment screw through hole; 6. a grub screw.
Detailed Description
In order to make the person skilled in the art better understand the present invention, the following detailed description of the present invention will be made in conjunction with the accompanying drawings of the present invention. The drawings of the present invention are merely exemplary embodiments of the invention, and not intended to depict all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in figure 1, the utility model provides a gaseous footstep bearing of foil piece modularization installation's dynamic pressure, including bearing frame 1, countersunk screw 2, tile 3, elastic support bottom foil 4, top foil 5 and grub screw 6, wherein the stack of elastic support bottom foil 4 and top foil 5 superposes in proper order on tile 3, fastens and fixes a position through grub screw 6.
As shown in fig. 2 and 3, the elastic supporting bottom foil 4 and the top foil 5 are mounted in the lateral screw holes 32 of the tile inlet block through the elastic supporting bottom foil space screw through holes 43, the top foil space screw through holes 53 and the flat head screws 6, the top of the tile is attached to the elastic supporting bottom foil working section 42, and the elastic supporting bottom foil working section 42 is attached to the top foil working section 52. In the use process, when a certain foil unit is damaged, the elastic support bottom foil 4 or the top foil 5 can be replaced independently, and the tile 6 and the undamaged foil can be used for multiple times, so that the purpose of serial replacement is achieved, the processing technology is simplified, the defective rate is reduced, and the processing and assembling difficulty is reduced. The tiles 3 are evenly distributed on the bearing seat 1, and a micro gap is formed between each tile 3 and the flat head screw 6 of the adjacent tile, so that the tiles are guaranteed to be installed uniformly and centered, and bearing uniformity is achieved. The elastic support bottom foil working section 42 and the top foil working section 52 form a wedge-shaped space with the shaft shoulder of the rotating shaft for forming a dynamic pressure gas film, so that the top foil and the rotating shaft are more smoothly matched, and the bearing capacity of the bearing is higher.
As shown in fig. 4, the bearing housing 1 is a base of the bearing, and is circumferentially fixed by a fixing groove 11. A plurality of countersunk screw holes 12 are uniformly distributed at the bottom of the bearing seat 1, and the tile 3 can be fixedly arranged at the upper side of the bearing seat 1 through the countersunk screws 2.
As shown in FIG. 5, the pads 3 are uniformly distributed on the bearing seat 1 and are fastened and positioned by the countersunk head screws 2. The resilient support bottom foil 4 and the top foil 5 on the bearing housing 1 are capable of supporting the main shaft of the rotor system. The threaded hole 31 at the bottom of the tile is a blind hole, so that the formation of a dynamic pressure air film cannot be influenced. When the threaded hole 32 at the side of the pad is a through hole, a gasket is added at the bottom of the bearing seat to prevent air leakage, so that the formation of a dynamic pressure air film is not influenced.
Although the invention has been described in detail with reference to specific embodiments and examples, it will be understood by those skilled in the art that the invention is not limited to the details shown, since various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. A foil modularly-installed dynamic pressure gas thrust bearing is characterized in that the thrust bearing comprises a bearing seat, a tile block, a countersunk head screw, a flat head screw, an elastic support bottom foil and a top foil; the elastic support bottom foil and the top foil are fan-shaped and both consist of a flat section of a working plane and a duty section for fastening and positioning a flat head screw, and the duty section is vertical to the flat section and is provided with a screw through hole; the tile is fan-shaped, and the bottom and the side are respectively provided with a threaded hole; the elastic support bottom foil and the top foil are fixed on the side part of the tile through flat head screws; countersunk screw holes are uniformly distributed on the bearing seat along the circumferential direction; the tile blocks are uniformly distributed on the bearing seat and are fastened and positioned through countersunk screws; the bearing seat, the tile, the elastic support bottom foil and the top foil are sequentially stacked and arranged.
2. The foil modular mounted dynamic gas thrust bearing of claim 1, wherein said elastic support bottom foil and top foil have contours that coincide and can be of the foil, wire mesh or blister type.
3. The foil modular mounted dynamic gas thrust bearing of claim 1, wherein said pads top and bottom planes are parallel; the threaded hole formed at the bottom of the tile can be a blind hole or a through hole; the threaded holes formed in the side parts of the tiles are blind holes, and the number of the threaded holes is multiple.
4. The foil modular mounted dynamic pressure gas thrust bearing of claim 1 wherein the inner rings of the resiliently supported bottom and top foils secured by the grub screws are coincident with the inner cylindrical surface of the tile and the free section of the resiliently supported bottom foil is coincident with the side surface of the tile.
5. A foil modular mounted thrust gas bearing according to claim 1 wherein the pads are evenly distributed on the housing to divide the housing into equal parts; a micro gap is formed between each tile and the flat head screw of the adjacent tile, and the micro gaps are used for ensuring that the tiles are installed and centered uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625676.5U CN215257366U (en) | 2021-03-29 | 2021-03-29 | Foil modularized mounted dynamic pressure gas thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625676.5U CN215257366U (en) | 2021-03-29 | 2021-03-29 | Foil modularized mounted dynamic pressure gas thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215257366U true CN215257366U (en) | 2021-12-21 |
Family
ID=79506070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120625676.5U Active CN215257366U (en) | 2021-03-29 | 2021-03-29 | Foil modularized mounted dynamic pressure gas thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215257366U (en) |
-
2021
- 2021-03-29 CN CN202120625676.5U patent/CN215257366U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108286567B (en) | Thrust foil dynamic pressure air bearing with thick top foil structure | |
| CN108730330B (en) | Elastic foil air bearing and method for adjusting rigidity and damping thereof | |
| CN111927876A (en) | Thrust air foil bearing | |
| CN108730331B (en) | Axial dynamic pressure air bearing and method for adjusting rigidity and damping thereof | |
| CN113090645A (en) | Foil gas thrust bearing | |
| CN215257366U (en) | Foil modularized mounted dynamic pressure gas thrust bearing | |
| CN112855749B (en) | Split type foil dynamic pressure gas thrust bearing and manufacturing method thereof | |
| CN102418568A (en) | Fingertip sealing device | |
| CN101749055A (en) | Involute-type fingertip sealing structure | |
| CN113357258A (en) | Novel method for mounting foil dynamic pressure gas thrust bearing | |
| CN113266643A (en) | Radial-axial integrated magnetic-gas hybrid bearing and manufacturing method and application thereof | |
| CN216143065U (en) | Cantilever structure elastic foil dynamic pressure air-float thrust bearing | |
| CN221097204U (en) | Assembled dynamic pressure gas thrust bearing and rotor system of high-speed centrifugal air compressor | |
| CN112160980B (en) | Gas dynamic pressure bearing, motor and compressor | |
| CN214304498U (en) | Compressor and air conditioner | |
| CN213332038U (en) | Thrust pad device of generator | |
| CN209892446U (en) | Water lubrication screw compressor | |
| CN110985526B (en) | Pneumatic dynamic bearing, manufacturing method thereof and mechanical equipment | |
| CN218863079U (en) | Thrust foil gas bearing structure | |
| CN114850799B (en) | Ceramic matrix composite turbine outer ring machining tool and machining method | |
| CN216882451U (en) | Spot welding tool for foil air-floatation thrust bearing | |
| CN220613533U (en) | Assembled honing head of concatenation | |
| CN211728059U (en) | Welding positioning tool for vent valve assembly | |
| CN215949867U (en) | Compressor, centrifugal compressor, air compressor, automobile and air conditioner | |
| CN114922843B (en) | High-speed centrifugal air compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230608 Address after: Room 99, Room 706, 7th Floor, Block A, Zhongdeng Wenjing Building, Fengcheng 9th Road, Xi'an Economic and Technological Development Zone, Shaanxi Province, 710000 Patentee after: Qicheng Suspension Technology (Xi'an) Co.,Ltd. Address before: No.22 Xinong Road, Yangling Demonstration Zone, Xianyang City, Shaanxi Province, 712100 Patentee before: NORTHWEST A & F University |