CN214465606U - Independent movable multi-elastic-piece slotting composite air bearing - Google Patents
Independent movable multi-elastic-piece slotting composite air bearing Download PDFInfo
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- CN214465606U CN214465606U CN202120297096.8U CN202120297096U CN214465606U CN 214465606 U CN214465606 U CN 214465606U CN 202120297096 U CN202120297096 U CN 202120297096U CN 214465606 U CN214465606 U CN 214465606U
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Abstract
The utility model discloses an independent movable multi-spring-piece slotting composite air bearing, which comprises a bearing seat and a rotating shaft, and also comprises a bearing outer ring and an outer sliding spring piece ring, wherein both ends of the bearing outer ring are provided with a left limit ring and a right limit ring which are symmetrically arranged, the outer sliding spring piece ring comprises a slot drawing ring and a plurality of independent arch-shaped spring pieces arranged on the slot drawing ring, when the bearing outer ring is subjected to external excitation vibration, the axle seat spring pieces and the independent arch-shaped spring pieces deform to dissipate partial external excitation vibration energy, the slot sliding ring can rotate around a shaft in a range limited by the left limit ring, through the mechanical conversion of an independent arch-shaped spring piece system, the circumferential reciprocating vibration can keep dissipating linear vibration energy and reduce the system amplitude, the advantage of the rigid bearing seat that the small gap of a system pneumatic component is ensured, thus, the bearing seat can still follow vibration motion when being subjected to the external excitation vibration, the load of the bearing is reduced, the air film between the bearing seat and the rotating shaft is ensured not to be unstable and broken due to external vibration.
Description
Technical Field
The invention relates to the field of foil type bearings, in particular to an independent movable multi-elastic-piece slotted composite air bearing.
Background
Air bearings are widely used in the industrial field. The higher the rotating speed of the conventional mechanical contact type rolling bearing is, the higher the requirements on bearing precision, lubrication and the like are, and the shorter the service life is. The air bearing suspends the main shaft in the air, has no mechanical contact, uses clean air as a lubricant, reduces the abrasion degree to the minimum, but is widely applied to non-road and non-strong-excitation-vibration scenes at present, and faces challenges in the using process of the strong-excitation-vibration scenes such as roads.
Different application scenes have great requirements on the air bearing, the difference between the external vibration of the mobile machine and the operation condition of the non-mobile machine is large, and particularly in the field of vehicles, the vehicle vibration caused by the unevenness of roads can provide strong external excitation for the air bearing through tires and a vehicle body. Such excitation is complex, with the load spectrum being related by road conditions, vehicle conditions, and vehicle operating conditions. The excitation often causes large load change of the air bearing, causes change, fluctuation and breakage of a bearing air film, and further causes damage and even failure of the air bearing.
The invention aims to solve the problems that: the mobile rotary machine has larger working condition difference during operation, and the external vibration received during working due to severe road environment, human factors and the like is transmitted to the existing foil bearing, the vibration acceleration of the external vibration has a large variation range, the vibration frequency variation is very large, and the maximum value of the vibration acceleration often exceeds the maximum bearing capacity of the existing foil bearing. The foil itself is formed by a very thin, elastic metal sheet which is very susceptible to deformation under the influence of vibrational forces. The deformation of the thin foil under the external vibration causes the deformation of 'air film forming boundary', the deformation is not uniform along the circumferential direction of the rotating shaft, the air film is changed, fluctuated and broken, a continuous, regular and stable structure cannot be maintained, and the shaft cannot normally rotate. The boundary deformation of the air film is required to be ensured to meet the fluid dynamic requirement from the aspects of structural design, foil rigidity and the like, and the normal and efficient work of the air film is ensured.
Disclosure of Invention
The utility model aims at improving the poor problem of current foil bearing stability, provide an independent movable many plays piece fluting composite air bearing, the air film is when the environment is stable, and air film stability is good, and the pneumatic part of system can obtain higher pneumatic efficiency with less pneumatic clearance, makes the bearing frame can be along with the shell fragment motion, and then makes the air film between bearing frame and the axle keep continuous stable, ensures bearing system job stabilization.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a compound air bearing of independent movable many shell fragment fluting, includes bearing frame and pivot, still includes bearing inner race and outer slip shell fragment ring, and bearing inner race both ends are equipped with symmetrical arrangement's left spacing ring and right spacing ring, and outer slip shell fragment ring includes the slot sliding ring and sets up a plurality of independent arch shell fragments on the slot sliding ring, wherein: each independent arched elastic sheet protrudes inwards, the independent arched elastic sheets are sequentially connected end to end, and the slot sliding ring is in sliding fit with the bearing outer ring; the bearing frame is in outer slip shell fragment intra-annular, is equipped with a plurality of axle bed shell fragments on the bearing frame outer wall, wherein: the shaft seat elastic sheets and the independent arched elastic sheets are in one-to-one correspondence, and are fixedly connected with each other. When the bearing seat is subjected to external vibration, the bearing seat is displaced firstly, then the shaft seat elastic sheet connected with the bearing seat is deformed, the bearing seat can vibrate along with an elastic sheet system, the shaft seat elastic sheet and the independent arched elastic sheet deform to dissipate partial external vibration energy, the slot sliding ring is limited in radial direction, circumferential direction and axial direction and can move, the slot sliding ring can rotate around a shaft in a range limited by a left limiting ring, through mechanical conversion of the independent arched elastic sheet system, circumferential reciprocating vibration can maintain dissipation linear vibration energy and reduce system amplitude, the advantage of the rigid bearing seat in ensuring small clearance of a system pneumatic component is maintained, meanwhile, the position of the slot sliding ring can be adjusted by vibration and elastic sheet tension when the external vibration is applied, and the characteristic of vibration mode of different radial directions of the system can be obtained, so that the bearing seat can still follow vibration movement when the external vibration is applied, the load of the bearing is reduced, and the air film between the bearing seat and the rotating shaft is ensured not to be unstable and broken due to external vibration.
Preferably, a plurality of left limiting clamping strips are arranged on the left limiting ring, a plurality of right limiting clamping strips are arranged on the right limiting ring, the left limiting ring and the right limiting ring are fixedly clamped with the outer ring of the bearing, and the left limiting clamping strips and the right limiting clamping strips are located in a cavity formed by the slot sliding ring and the independent arched elastic sheet.
Preferably, the width of each left limiting clamping strip is half of that of the independent arched elastic sheet, and the slot sliding ring and the independent arched elastic sheet slide between two adjacent left limiting clamping strips in a reciprocating mode. Independent arch shell fragment and draw-in groove sliding ring are through sliding in circumference, and the buffering reduces system vibration energy.
Preferably, the number of the left limiting clamping strips and the number of the right limiting clamping strips are five, the left limiting clamping strips are arranged on the left limiting ring at equal intervals, and the right limiting clamping strips are arranged on the right limiting ring at equal intervals.
Preferably, the number of the independent arched elastic sheets and the number of the shaft seat elastic sheets are five.
Preferably, in each of the bearing shells: the axle bed shell fragment includes middle part bearing part and the elastic supporting foot that two symmetries set up, and middle part bearing part is convex, is equipped with a plurality of wedge draw-in grooves on the bearing frame outer wall, and the elastic supporting foot joint is on the wedge draw-in groove. The elastic supporting legs are used for absorbing vibration energy after deformation, and the middle bearing part mainly conducts most of the vibration energy to the independent arched elastic pieces.
Preferably, wherein: the middle bearing parts are arc-shaped, and the middle points of the middle bearing parts and the middle points of the corresponding independent arch-shaped elastic sheets are welded and fixed with each other. The transmission efficiency of the independent arched elastic sheet and the shaft seat elastic sheet is higher and more stable through welding and fixing.
Preferably, the middle bearing part and the elastic supporting foot are of an integrally formed structure.
The motor is characterized by further comprising a driving motor, the driving motor comprises a stator and an outer rotor, a connecting shaft piece is arranged between the outer rotor and the slot sliding ring, and the outer rotor rotates to drive the slot sliding ring to rotate back and forth along the outer ring of the bearing. The outer rotor rotates to drive the slot slip ring to rotate along the outer ring of the bearing, and the vibration energy which is received and dissipated by circumferential rotation can be used for improving the overall stability.
The invention has the beneficial technical effects that: the shaft seat elastic sheet and the independent arched elastic sheet are opposite to each other to form a bulge, mutual contact points of the middle points of each elastic sheet are welded, a bearing can still follow vibration motion when being subjected to external excitation vibration, the slot slip ring can rotate around a shaft in a limited range, through mechanical conversion of the elastic sheet system, the reciprocating vibration can keep dissipating linear vibration energy and simultaneously reduce system amplitude, an air film between a bearing seat and the shaft can not be unstable and broken due to the external excitation vibration, the bearing elastic supporting system has different rigidity and natural frequency along the circumferential direction of the bearing through the design of a supporting system structure and material characteristics, and the system changes along the circumferential direction, so that the system can keep different damping modal characteristics along different directions.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic transverse cross-sectional view of the present invention;
fig. 3 is a schematic view of the assembly structure of the present invention;
FIG. 4 is a schematic view of the structure of the elastic sheet of the shaft seat of the present invention;
fig. 5 is a schematic cross-sectional structure diagram of the external motor of the present invention;
Detailed Description
The invention will be further described with reference to the accompanying drawings, which will serve to assist the public in understanding the invention, and the following description of the embodiments is not intended to limit the invention to the specific embodiments given by the applicant, and any changes in the definition of parts or features, or in the form of an overall structure, rather than essential changes, may be made to the invention as defined in the claims.
Examples
As shown in fig. 1: the utility model provides an independent movable compound air bearing of many shell fragments fluting, includes bearing frame 2 and pivot 1, still includes bearing inner race 4 and outer slip shell piece ring 3, and 4 both ends of bearing inner race are equipped with symmetrical arrangement's left spacing ring 5 and right spacing ring 6.
As shown in fig. 2: the outer sliding spring plate ring 3 comprises a slot sliding ring 31 and five independent arched spring plates 32 arranged on the slot sliding ring, wherein: each independent arched elastic sheet 32 protrudes inwards, the independent arched elastic sheets are sequentially connected end to end and surround to form an annular outer sliding elastic sheet ring 3, and the slot sliding ring 31 is in sliding fit with the bearing outer ring 4; bearing frame 2 is in outer slip shell fragment ring 3, is equipped with a plurality of axle bed shell fragments 21 on the 2 outer walls of bearing frame, wherein: the number of the shaft seat elastic sheets 21 corresponds to that of the independent arch elastic sheets 32, and the shaft seat elastic sheets and the independent arch elastic sheets are fixedly connected with each other.
As shown in fig. 3: the left limiting ring 5 is provided with five left limiting clamping strips 51 which are arranged at equal intervals, the right limiting ring 6 is provided with five right limiting clamping strips 61 which are arranged at equal intervals, the left limiting ring and the right limiting ring are clamped and fixed with the outer ring of the bearing, and each left limiting clamping strip and each right limiting clamping strip are positioned in a cavity formed by the slot sliding ring 31 and the independent arched elastic sheet 32.
Each left limiting clamping strip 51 has a width half of that of the independent arched elastic sheet 32, and the slot slip ring 31 and the independent arched elastic sheet 32 slide back and forth between two adjacent left limiting clamping strips.
As shown in fig. 2 and 4: in each bearing leaf spring: the shaft seat elastic sheet 21 comprises a middle bearing part 211 and two elastic supporting legs 212 symmetrically arranged, the middle bearing part is arc-shaped, the outer wall of the bearing seat 2 is provided with a plurality of wedge-shaped clamping grooves 20, and the elastic supporting legs are clamped on the wedge-shaped clamping grooves 20. The elastic supporting legs are used for absorbing vibration energy after deformation, and the middle bearing part mainly conducts most of the vibration energy to the independent arched elastic pieces.
Wherein: the middle bearing parts 211 are arc-shaped, and the middle point of each middle bearing part 211 and the middle point of the corresponding independent arch-shaped elastic sheet 32 are welded and fixed with each other. The transmission efficiency of the independent arched elastic sheet and the shaft seat elastic sheet is higher and more stable through welding and fixing. The middle bearing part 211 and the elastic supporting legs 212 are of an integrally formed structure, and the elastic supporting legs 212 achieve proper elasticity and rigidity through heat treatment.
As shown in fig. 5: the motor is characterized by further comprising a driving motor 7, the driving motor comprises a stator 71 and an outer rotor 72, a connecting shaft 73 is arranged between the outer rotor 72 and the slot sliding ring 31, the outer rotor 72 rotates to drive the slot sliding ring 31 to rotate along the outer ring of the bearing in a reciprocating mode, the outer rotor rotates to drive the slot sliding ring to rotate along the outer ring of the bearing, the received vibration energy can be dissipated in a circumferential direction, and the overall stability is improved.
In this embodiment: when the bearing seat is subjected to external excitation vibration, the bearing seat 2 is displaced firstly, then the shaft seat elastic sheet 21 connected with the bearing seat 2 is deformed, the bearing seat 2 can vibrate along with an elastic sheet system, the shaft seat elastic sheet and the independent arched elastic sheet 32 deform to dissipate partial external excitation vibration energy, the slot sliding ring 31 is limited in radial direction, circumferential direction and axial direction and can move, the slot sliding ring 31 can rotate around a shaft in a range limited by a left limiting ring, through mechanical conversion of the independent arched elastic sheet system, circumferential reciprocating vibration can reduce system amplitude while maintaining dissipation linear vibration energy, the advantage of the rigid bearing seat 2 in ensuring small clearance of a system pneumatic component is maintained, meanwhile, the position of the slot sliding ring 31 can be adjusted through vibration and elastic sheet tension when the external excitation vibration is received, different system vibration modal characteristics in radial direction can be obtained, and the bearing seat can still follow vibration when the external excitation vibration is received, the load of the bearing is reduced, and the air film between the bearing seat 2 and the rotating shaft 1 is ensured not to be unstable and broken due to external vibration.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.
Claims (9)
1. The utility model provides an independent movable compound air bearing of many plays piece fluting, includes bearing frame (2) and pivot (1), its characterized in that: still include bearing inner race (4) and outer slip shell fragment ring (3), bearing inner race (4) both ends are equipped with symmetrical arrangement's left spacing ring (5) and right spacing ring (6), outer slip shell fragment ring (3) include slot sliding ring (31) and set up a plurality of independent arch shell fragments (32) on the slot sliding ring, wherein: each independent arched elastic sheet (32) protrudes inwards, the independent arched elastic sheets are sequentially connected end to end, and the slot sliding ring (31) is in sliding fit with the bearing outer ring (4);
bearing frame (2) are in outer slip shell fragment ring (3), be equipped with a plurality of axle bed shell fragments (21) on bearing frame (2) outer wall, wherein: the number of the shaft seat elastic sheets (21) corresponds to that of the independent arched elastic sheets (32), and the shaft seat elastic sheets and the independent arched elastic sheets are fixedly connected with each other.
2. The independently movable multiple-spring-piece slotted compound air bearing as claimed in claim 1, wherein the left limit ring (5) is provided with a plurality of left limit clamping strips (51), the right limit ring (6) is provided with a plurality of right limit clamping strips (61), the left limit ring and the right limit ring are fixed to the outer ring of the bearing in a clamping manner, and each of the left limit clamping strips and the right limit clamping strips is located in a cavity formed by the slot sliding ring (31) and the independent arched spring piece (32).
3. The independently movable multiple-spring-piece slotted compound air bearing as claimed in claim 2, wherein each left limit clip strip (51) has a width half of that of the independent arched spring piece (32), and the slot-in slip ring (31) and the independent arched spring piece (32) slide back and forth between two adjacent left limit clip strips.
4. The independently movable multiple-spring-piece slotted compound air bearing of claim 2, wherein the number of the left limit clamping strips and the number of the right limit clamping strips are five, each left limit clamping strip is arranged on the left limit ring at equal intervals, and each right limit clamping strip is arranged on the right limit ring at equal intervals.
5. The independently movable multiple-blade slotted compound air bearing of claim 1, wherein the number of independent dome blades (32) and shaft seat blades (21) is five.
6. The independently movable multiple-blade slotted composite air bearing of claim 1, wherein in each bearing blade: the shaft seat elastic sheet (21) comprises a middle bearing part (211) and two elastic supporting legs (212) which are symmetrically arranged, the middle bearing part is arc-shaped, a plurality of wedge-shaped clamping grooves (20) are formed in the outer wall of the bearing seat (2), and the elastic supporting legs are connected to the wedge-shaped clamping grooves (20) in a clamping mode.
7. The independently movable multiple-blade slotted composite air bearing of claim 6, wherein: the middle bearing parts (211) are arc-shaped, and the middle points of the middle bearing parts (211) and the middle points of the corresponding independent arch-shaped elastic sheets (32) are welded and fixed with each other.
8. The independently movable multiple-blade slotted compound air bearing of claim 6, wherein the middle bearing portion (211) and the resilient support foot (212) are integrally formed.
9. The independently movable multi-spring-sheet slotted compound air bearing as claimed in claim 1, further comprising a driving motor (7), wherein the driving motor comprises a stator (71) and an outer rotor (72), a shaft connecting member (73) is provided between the outer rotor (72) and the slotted slip ring (31), and the outer rotor (72) rotates to drive the slotted slip ring (31) to rotate along the inner wall of the bearing outer ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120297096.8U CN214465606U (en) | 2021-02-02 | 2021-02-02 | Independent movable multi-elastic-piece slotting composite air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120297096.8U CN214465606U (en) | 2021-02-02 | 2021-02-02 | Independent movable multi-elastic-piece slotting composite air bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465606U true CN214465606U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120297096.8U Active CN214465606U (en) | 2021-02-02 | 2021-02-02 | Independent movable multi-elastic-piece slotting composite air bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465606U (en) |
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2021
- 2021-02-02 CN CN202120297096.8U patent/CN214465606U/en active Active
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