CN216343373U - Thrust air bearing assembly - Google Patents
Thrust air bearing assembly Download PDFInfo
- Publication number
- CN216343373U CN216343373U CN202123273128.XU CN202123273128U CN216343373U CN 216343373 U CN216343373 U CN 216343373U CN 202123273128 U CN202123273128 U CN 202123273128U CN 216343373 U CN216343373 U CN 216343373U
- Authority
- CN
- China
- Prior art keywords
- air bearing
- thrust air
- thrust
- bearing
- mounting plate
- 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)
Abstract
The utility model discloses a thrust air bearing assembly, which comprises a bearing seat and a thrust air bearing arranged on the front surface of the bearing seat, wherein the front surface of the thrust air bearing is close to the end surface of a thrust disc, central holes for a rotating shaft to penetrate are formed in the middle parts of the bearing seat and the thrust air bearing, the thrust air bearing assembly also comprises a plurality of elastic dampers uniformly distributed along the peripheral edge of the thrust air bearing, one end of each elastic damper is fixedly connected with the peripheral edge of the back surface of the thrust air bearing, the other end of each elastic damper is fixedly connected with the front surface of the bearing seat, and the elastic dampers are compressed when the thrust air bearing is stressed. The machining precision of the matching surface of the thrust air bearing mounting part is reduced, the machining cost is reduced, the difficulty in assembling the thrust air bearing and the thrust disc in parallel is reduced, the assembling efficiency is improved, when the thrust air bearing shaft bears impact, the elastic damping is increased, the bearing is protected, and the service life is prolonged.
Description
Technical Field
The utility model relates to the field of air bearing, in particular to a thrust air bearing assembly.
Background
The air bearing has the advantages of high rotating speed, high precision, small friction loss and the like, and is widely applied to the fields of high-speed precision rotating machinery and the like. The air bearing supports the high-speed rotating mechanical shafting and is supported by a pair of radial air bearings and a pair of thrust air bearings, the radial air bearings are used for bearing radial force, the thrust air bearings are used for bearing axial force, and in the prior art, the thrust air bearings are installed on a bearing seat through screws and matched with a thrust disc.
However, when the parallelism is not reached, the thrust air bearing is severely unbalanced, and the thrust air bearing and the thrust disc are easily worn locally. In order to guarantee the requirement of installation parallelism, the requirement of machining precision of the bearing seat, the bearing bottom plate and the thrust disc is high, so that the machining is difficult, the assembly precision is difficult to guarantee during installation, and the installation qualified rate is low. Because the thrust air bearing is directly rigidly connected with the bearing seat through the screw, when the rotor impacts, the thrust air bearing is easy to be damaged due to the fact that plastic deformation cannot be recovered when the rotor impacts, and the service life is shortened.
Therefore, how to provide a thrust air bearing assembly which overcomes the above problems is a technical problem which needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a thrust air bearing assembly, wherein an elastic damper provides buffer damping, so that the thrust air bearing is prevented from being damaged due to impact, the mounting difficulty is reduced, the impact resistance is improved, and the service performance of the bearing is improved.
In order to solve the technical problem, the utility model provides a thrust air bearing assembly which comprises a bearing seat and a thrust air bearing arranged on the front surface of the bearing seat, wherein the front surface of the thrust air bearing is close to the end surface of a thrust disc, central holes for a rotating shaft to pass through are formed in the middle of the bearing seat and the thrust air bearing, the thrust air bearing assembly also comprises a plurality of elastic dampers uniformly distributed along the peripheral edge of the thrust air bearing, one end of each elastic damper is fixedly connected with the peripheral edge of the back surface of the thrust air bearing, the other end of each elastic damper is fixedly connected with the front surface of the bearing seat, and the elastic dampers are compressed when the thrust air bearing is stressed.
Preferably, the elastic damper comprises a lower mounting plate fixedly mounted on the front surface of the bearing seat and an upper mounting plate fixedly mounted on the peripheral edge of the back surface of the thrust air bearing, the lower mounting plate and the upper mounting plate are arranged oppositely, and an axially extending spring is arranged between the lower mounting plate and the upper mounting plate.
Preferably, the peripheral edge of the lower mounting plate is provided with a plurality of mounting through holes, the corresponding position in the front of the bearing seat is provided with a threaded hole, and a mounting bolt penetrates through the mounting through holes to be connected with the threaded hole.
Preferably, the front surface of the upper mounting plate is provided with an axially extending threaded rod, a connecting through hole is formed in the corresponding position of the peripheral edge of a bearing bottom plate of the thrust air bearing, and the threaded rod penetrates through the connecting through hole and is locked through a nut.
Preferably, the lower mounting plate openly be provided with around the lower sleeve of spring, the upper mounting plate back is provided with around the upper sleeve of spring, the upper sleeve stretches into in the lower sleeve to can stretch out and draw back along the axial, be provided with axially extended guide post in the spring.
Preferably, the elastic damper comprises a positioning bolt extending axially and a disc spring sleeved on the positioning bolt, a connecting through hole is formed in the edge of the periphery of a bearing bottom plate of the thrust air bearing, a threaded hole is formed in the corresponding position of the front face of the bearing seat, the positioning bolt penetrates through the connecting through hole and is connected with the threaded hole, and the disc spring is pressed by the back face of the bearing bottom plate and the front face of the bearing seat.
Preferably, each positioning bolt is sleeved with a plurality of disc springs in forward and reverse butt joint.
Preferably, the disc spring is arranged between the nut of the positioning bolt and the front face of the bearing bottom plate.
Preferably, four elastic dampers which are uniformly distributed are arranged on the peripheral edge of the thrust air bearing.
Preferably, the two symmetrically arranged thrust air bearings are respectively located on two sides of the thrust disc, and the thrust air bearings are thrust dynamic pressure gas foil bearings or thrust static pressure air bearings.
The utility model provides a thrust air bearing assembly, which comprises a bearing seat and a thrust air bearing arranged on the front surface of the bearing seat, wherein the front surface of the thrust air bearing is close to the end surface of a thrust disc, central holes for a rotating shaft to penetrate are formed in the middle parts of the bearing seat and the thrust air bearing, the thrust air bearing assembly also comprises a plurality of elastic dampers uniformly distributed along the peripheral edge of the thrust air bearing, one end of each elastic damper is fixedly connected with the peripheral edge of the back surface of the thrust air bearing, the other end of each elastic damper is fixedly connected with the front surface of the bearing seat, and the elastic dampers are compressed when the thrust air bearing is stressed.
By utilizing the characteristic of the elastic damper of stress expansion, when the stress is increased due to the fact that the part is uneven, the elastic damper is stressed and compressed, the thrust air bearing and the thrust disc are automatically leveled, and when the thrust air bearing shaft bears the impact of the rotating shaft, the elastic damper provides buffering damping, so that damage caused by the impact is avoided. The machining precision of the matching surface of the thrust air bearing mounting part is reduced, the machining cost is reduced, the difficulty in assembling the thrust air bearing and the thrust disc in parallel is reduced, the assembling efficiency is improved, when the thrust air bearing shaft bears impact, the elastic damping is increased, the bearing is protected, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a first thrust air bearing assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of an elastomeric damper of an embodiment of an air thrust bearing assembly according to the present invention;
FIG. 3 is a schematic view of a thrust air bearing assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second embodiment of a thrust air bearing assembly according to the present invention;
FIG. 5 is an enlarged view of a portion of a third elastomeric damper of an embodiment of an air thrust bearing assembly in accordance with the present invention;
FIG. 6 is an enlarged view of a portion of an elastic damper in a fourth embodiment of an air thrust bearing assembly according to the present invention.
Detailed Description
The thrust air bearing assembly has the core that the elastic damper provides buffer damping, so that the thrust air bearing is prevented from being damaged due to impact, the mounting difficulty is reduced, the impact resistance is improved, and the service performance of the bearing is improved.
In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a thrust air bearing assembly according to a first embodiment of the present invention; FIG. 2 is an enlarged view of a portion of an elastomeric damper of an embodiment of an air thrust bearing assembly according to the present invention; FIG. 3 is a schematic view of a thrust air bearing of a first embodiment of the thrust air bearing assembly of the present invention.
The utility model provides a thrust air bearing assembly, which comprises a bearing seat 1 and a thrust air bearing 2, wherein one surface of each component, which is close to a thrust disc 4, is a front surface, the other surface of each component, which is far away from the thrust disc 4, is a back surface, the thrust air bearing 2 is arranged on the front surface of the bearing seat 1, the front surface of the thrust air bearing 2 is close to the end surface of the thrust disc 4, and central holes for a rotating shaft to pass through are arranged in the middle parts of the bearing seat 1 and the thrust air bearing 2. Specifically, the thrust air bearing 2 may be a thrust dynamic pressure gas foil bearing, and includes a bearing bottom plate 21, an elastic element 24, and a top foil 23, the front surface of the bearing bottom plate 21 fixes the elastic element 24 and the top foil 23 by welding, and the top foil 23 covers the elastic element 24. The thrust air bearing 2 can also be a thrust static pressure air bearing, and is also provided with a bearing bottom plate 21, and the elastic damper 3 is connected on the bearing bottom plate 21. Two thrust air bearings 2 which are symmetrically arranged can be respectively positioned at two sides of the thrust disc 4.
Further, the thrust air bearing assembly further comprises a plurality of elastic dampers 3, the elastic dampers 3 are evenly distributed along the peripheral edges of the thrust air bearing 2, one end of each elastic damper 3 is fixedly connected with the peripheral edge of the back surface of the thrust air bearing 2, the other end of each elastic damper 3 is fixedly connected with the front surface of the bearing seat 1, the elastic dampers 3 are evenly distributed between the thrust air bearing 2 and the bearing seat 1, and the elastic dampers 3 are compressed when the thrust air bearing 2 is stressed.
By utilizing the characteristic that the elastic damper 3 is stressed and stretched, when the stress is increased due to the fact that the part is uneven, the elastic damper 3 is stressed and compressed, the thrust air bearing 2 and the thrust disc 4 are automatically leveled, and when the thrust air bearing 2 is impacted by the rotating shaft, the elastic damper 3 provides buffer damping, so that damage caused by impact is avoided. The machining precision of the matching surface of the installation part of the thrust air bearing 2 is reduced, the machining cost is reduced, the difficulty of the assembling parallelism of the thrust air bearing 2 and the thrust disc 4 is reduced, the assembling efficiency is improved, when the thrust air bearing 2 is impacted, the elastic damping is increased, the bearing is protected, and the service life is prolonged.
Specifically, the elastic damper 3 includes a lower mounting plate 31 and an upper mounting plate 32, the lower mounting plate 31 is fixedly mounted on the front surface of the bearing seat 1, the upper mounting plate 32 is fixedly mounted on the peripheral edge of the back surface of the thrust air bearing 2, the lower mounting plate 31 and the upper mounting plate 32 are oppositely arranged, and an axially extending spring 33 is arranged between the lower mounting plate 31 and the upper mounting plate 32, and when the elastic damper is impacted, the spring 33 is compressed to provide damping buffering.
For stable connection, a plurality of mounting through holes 34 are formed in the peripheral edge of the lower mounting plate 31, threaded holes are formed in corresponding positions of the front surface of the bearing seat 1, and mounting bolts penetrate through the mounting through holes 34 and then are connected with the threaded holes, so that the lower mounting plate 31 is fixedly connected with the bearing seat 1.
The front surface of the upper mounting plate 32 is provided with an axially extending threaded rod 35, a connecting through hole 22 is arranged at a corresponding position on the peripheral edge of the bearing bottom plate 21 of the thrust air bearing 2, and the threaded rod 35 passes through the connecting through hole 22 and then is locked by a nut during mounting, so that the nut is positioned on the front surface of the bearing bottom plate 21. All the parts are connected through bolts, so that the parts are convenient to disassemble and update, and of course, all the parts can also be connected in a clamping way or a welding way and the like, and the utility model is within the protection scope
Further, the front surface of the lower mounting plate 31 is provided with a lower sleeve 36 surrounding the spring 33, the back surface of the upper mounting plate 32 is provided with an upper sleeve 37 surrounding the spring 33, the upper sleeve 37 extends into the lower sleeve 36, the upper sleeve and the lower sleeve are in clearance fit and can extend and retract along the axial direction, an axially extending guide post is arranged in the spring 33, and the end part of the guide post can be connected with the front surface of the lower mounting plate 31 or the back surface of the upper mounting plate 32, so that the guide function during axial extension and retraction is realized.
Referring to fig. 4 to 6, fig. 4 is a schematic structural diagram of a second thrust air bearing assembly according to an embodiment of the present invention; FIG. 5 is an enlarged view of a portion of a third elastomeric damper of an embodiment of an air thrust bearing assembly in accordance with the present invention; FIG. 6 is an enlarged view of a portion of an elastic damper in a fourth embodiment of an air thrust bearing assembly according to the present invention.
Also can adopt the elastic damping structure of other forms, in embodiment two, elastic damper 3 includes positioning bolt 38 and belleville spring 39, positioning bolt 38 axial extension, belleville spring 39 suit is in positioning bolt 38, thrust air bearing 2's bearing bottom plate 21 periphery edge is provided with connect the through-hole 22, the positive corresponding position of bearing frame 1 is provided with the screw hole, during the installation, connect the screw hole behind positioning bolt 38 passing connect the through-hole 22, make bearing bottom plate 21 connect bearing frame 1, tight belleville spring 39 is located between bearing bottom plate 21 back and the bearing frame 1 front simultaneously, bearing bottom plate 21 back and bearing frame 1 front compress tightly belleville spring 39, when receiving the impact, belleville spring 39 compresses, provide the damping buffering.
In the third embodiment, each positioning bolt 38 is sleeved with a plurality of disc springs 39 in forward and reverse butt joint, so that the damping performance is improved.
In the fourth embodiment, disc springs 39 are also arranged between the nuts of the positioning bolts 38 and the front surface of the bearing bottom plate 21, the two disc springs 39 clamp the two surfaces of the bearing bottom plate 21, and the thrust air bearing 2 can be optimally installed by adopting different numbers and combination modes of the disc springs 39, or by adopting a diaphragm spring, a wave washer, a rubber ring and the like, which are within the protection scope of the utility model.
On the basis of the thrust air bearing assembly provided by each of the above embodiments, the number of the elastic dampers 3 may be adjusted according to the situation, for example, four elastic dampers 3 are uniformly arranged on the peripheral edge of the thrust air bearing 2. Accordingly, four connection through-holes 22 need to be provided at the outer peripheral edge of the bearing base plate 21.
The thrust air bearing assembly provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a thrust air bearing assembly, include bearing frame (1) and install in the positive thrust air bearing (2) of bearing frame (1), thrust dish (4) terminal surface is pressed close to in the front of thrust air bearing (2), bearing frame (1) with thrust air bearing (2) middle part is provided with the centre bore that is used for the pivot to pass, its characterized in that still includes the edge a plurality of elastic damper (3) that thrust air bearing (2) neighboring was evenly arranged, the one end fixed connection of elastic damper (3) the neighboring at thrust air bearing (2) back, the other end fixed connection of elastic damper (3) bearing frame (1) is positive, compress during thrust air bearing (2) atress elastic damper (3).
2. The thrust air bearing assembly as claimed in claim 1, characterized in that said elastic damper (3) comprises a lower mounting plate (31) fixedly mounted on the front face of said bearing housing (1) and an upper mounting plate (32) fixedly mounted on the peripheral edge of the rear face of said thrust air bearing (2), said lower mounting plate (31) and said upper mounting plate (32) being disposed opposite each other, and an axially extending spring (33) being disposed between said lower mounting plate (31) and said upper mounting plate (32).
3. The thrust air bearing assembly as claimed in claim 2, characterized in that a plurality of mounting through holes (34) are formed at the peripheral edge of the lower mounting plate (31), threaded holes are formed at corresponding positions on the front surface of the bearing seat (1), and mounting bolts are inserted through the mounting through holes (34) to connect the threaded holes.
4. The thrust air bearing assembly as claimed in claim 3, characterized in that the upper mounting plate (32) is provided with an axially extending threaded rod (35) on the front surface, a connecting through hole (22) is provided at a position corresponding to the peripheral edge of the bearing bottom plate (21) of the thrust air bearing (2), and the threaded rod (35) passes through the connecting through hole (22) and is locked by a nut.
5. The thrust air bearing assembly according to claim 4, characterized in that the lower mounting plate (31) is provided with a lower sleeve (36) surrounding the spring (33) on the front side, the upper mounting plate (32) is provided with an upper sleeve (37) surrounding the spring (33) on the rear side, the upper sleeve (37) extends into the lower sleeve (36) and can be extended and retracted in the axial direction, and an axially extending guide post is arranged in the spring (33).
6. The thrust air bearing assembly as recited in claim 1, wherein the elastic damper (3) comprises a positioning bolt (38) extending axially and a disc spring (39) sleeved on the positioning bolt (38), a connecting through hole (22) is formed in the outer peripheral edge of a bearing bottom plate (21) of the thrust air bearing (2), a threaded hole is formed in a corresponding position of the front face of the bearing seat (1), the positioning bolt (38) penetrates through the connecting through hole (22) and is connected with the threaded hole, and the disc spring (39) is pressed by the back face of the bearing bottom plate (21) and the front face of the bearing seat (1).
7. The thrust air bearing assembly as set forth in claim 6 wherein each of said set bolts (38) is sleeved with a plurality of said belleville springs (39) in a positive-negative butt joint.
8. The thrust air bearing assembly as set forth in claim 7 wherein said belleville springs (39) are disposed between the nuts of said set bolts (38) and the front face of said bearing backing plate (21).
9. Thrust air bearing assembly according to any one of claims 1 to 8, characterized in that said thrust air bearing (2) is provided at its peripheral edge with four elastic dampers (3) arranged uniformly.
10. The thrust air bearing assembly as claimed in claim 9, characterized in that two of said thrust air bearings (2) are symmetrically disposed on two sides of said thrust disc (4), respectively, said thrust air bearings (2) being embodied as a thrust hydrodynamic foil bearing or a thrust hydrostatic air bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123273128.XU CN216343373U (en) | 2021-12-23 | 2021-12-23 | Thrust air bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123273128.XU CN216343373U (en) | 2021-12-23 | 2021-12-23 | Thrust air bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216343373U true CN216343373U (en) | 2022-04-19 |
Family
ID=81165378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123273128.XU Active CN216343373U (en) | 2021-12-23 | 2021-12-23 | Thrust air bearing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216343373U (en) |
-
2021
- 2021-12-23 CN CN202123273128.XU patent/CN216343373U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2532957A1 (en) | Compact resilient anisotropic support for bearing | |
| CN216343373U (en) | Thrust air bearing assembly | |
| CN109951148B (en) | Photovoltaic tracker transmission device | |
| CN101182865A (en) | Magnetic suspension bearing electric chief axis system with integral shock-absorbing device | |
| CN114087280A (en) | Thrust air bearing assembly | |
| CN202443027U (en) | Connection structure between encoder and rotating mechanism | |
| CN219413248U (en) | Dynamic pressure gas radial ceramic bearing for motor | |
| CN219082069U (en) | Composite radial foil gas bearing | |
| CN210510005U (en) | Flexible transmission connecting device | |
| CN219932757U (en) | Damping bearing support | |
| CN210296822U (en) | Large-scale transmission slip ring structure resistant to thermal stress damage | |
| CN214660812U (en) | Mounting rack with blocking pad for mounting hydraulic pump | |
| CN110486405B (en) | Vibration isolation system with annular metal rubber vibration isolator | |
| CN215861404U (en) | Elastic coupling with weight-hanging structure | |
| CN216950951U (en) | Novel many adaptations fan axle | |
| CN219529623U (en) | Quick mounting structure of shaft coupling | |
| CN205605364U (en) | Variable speed module and wind generating set and driving chain device | |
| CN217055306U (en) | Limiting and damping structure of turbine shaft | |
| CN212643222U (en) | Aeroelastic auxiliary support | |
| CN211175208U (en) | Bull-dozer engine shock absorber | |
| CN211924624U (en) | Oil cylinder with anti-shake mechanism | |
| CN220934962U (en) | Elastic connection structure of inner ring of disc type motor and input shaft of speed reducer | |
| CN220416002U (en) | Bearing pedestal with vibration reduction function | |
| CN213838759U (en) | Engine power output mechanism for agricultural equipment with elastic connecting plate | |
| CN216078136U (en) | Vibration isolator device suitable for axial rigidity adjustment of engine gearbox rack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |