A detachable air suspension fan bearing

Abstract

The present invention discloses a detachable air suspension fan bearing, which relates to the technical field of bearings and includes four base foil parts. A wave foil part is provided on the inner surface wall of each base foil part. A top foil body is arranged between the inner surface walls of the four wave foil parts. A notch is formed on the inner surface wall of the top foil body. An extended top foil part is fixedly installed at one end of the top foil body. The extended top foil part is movably placed inside the notch. A plurality of gas guiding joints are fixedly communicated with the outer surface wall of the extended top foil part. A plurality of holes are formed inside the four wave foil parts. A group of exhaust air bins are fixedly installed on the inner surface walls of the top foil body and the extended top foil part. A group of air inlet holes are formed inside each exhaust air bin. By adopting a combination of information monitoring and mechanical assistance, the bearing is enabled to have the ability of intermittent air guiding, avoiding the wave foil parts being in a squeezed state for a long time, preventing the generation of unidirectional external force impact, reducing the deformation probability of the wave foil parts, and prolonging the service life of the bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and particularly to a detachable air suspension fan bearing. Background Art

[0002] An air bearing is a precision bearing technology that uses gas (usually compressed air) as a lubricating and supporting medium. It is widely used in high-speed rotating machinery, precision measuring instruments, semiconductor manufacturing equipment, and aerospace fields.

[0003] An air bearing has the ability to reduce friction and wear, effectively improve transmission efficiency and reduce noise, and has characteristics such as strong reliability and convenient maintenance. Since the power systems used in suspension fans mostly adopt magnetic levitation technology, with the addition of an air bearing, the capabilities that should be possessed can be fully exerted, making the air bearing an indispensable part in the field of suspension fans.

[0004] However, the existing air suspension fan bearings have the following deficiencies:

[0005] The operation of the bearing uses compressed air or inert gas as the lubricating medium for the main shaft. During the process, to avoid the disappearance of the air film, gas needs to be continuously supplied into the bearing. However, due to the limitations of its own structure, the traditional air bearing cannot reasonably control the gas intake. When the supply volume is greater than the consumption volume, the air film pressure increases, resulting in a high mechanical friction coefficient between the gas medium and the machinery, increasing the mechanical load, increasing the vibration and the number of instantaneous impacts. When the external force applied to the wave foil exceeds its maximum elastic range, it is very easy to cause deformation of the wave foil.

[0006] Therefore, we propose a detachable air suspension fan bearing to solve the problems raised above. Summary of the Invention

[0007] The purpose of the present invention is to provide a detachable air suspension fan bearing. By optimizing the traditional structural layout, improving the gas delivery method, and with the cooperation of the induction component and the mechanical component, the contraction and expansion deformation of the main body structure can be obtained in real time. Through the intermittent air guiding method, the air pressure can be autonomously controlled, reducing the probability of deformation of some main components under pressure, so as to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A detachable air suspension fan bearing, including four base foil parts, each inner surface wall of the base foil part is provided with a wave foil part, a top foil body is arranged between the inner surface walls of the four wave foil parts, a notch is opened on the inner surface wall of the top foil body, an extended top foil part is fixedly installed at one end of the top foil body, the extended top foil part is movably placed inside the notch, a plurality of groups of air guiding joints are fixedly communicated with the outer surface wall of the extended top foil part, a plurality of groups of holes are opened inside the four wave foil parts, a group of exhaust air chambers are fixedly installed on the inner surface walls of the top foil body and the extended top foil part, a group of air inlet holes are opened inside each exhaust air chamber, each air inlet hole is respectively communicated with a corresponding air guiding joint, a plurality of groups of air guiding cavities are fixedly inserted inside the four base foil parts, a telescopic pipe is movably inserted inside each air guiding cavity, an arc-shaped induction nozzle is fixedly communicated with the exhaust end of each telescopic pipe, an active spring is fixedly installed between each air guiding cavity and the arc-shaped induction nozzle, and each active spring is respectively movably sleeved on the outer surface wall of a corresponding telescopic pipe.

[0009] Preferably, a group of positioning bases are fixedly installed on the inner surface walls of the top foil body and the extended top foil part, a drainage plate is fixedly installed on the outer surface wall of each positioning base, and a blocking frame is fixedly installed inside the exhaust air chamber.

[0010] Preferably, cross bars are fixedly inserted on both sides of the inner wall of each exhaust air chamber, a square seat is movably sleeved on the outer surface wall of each cross bar, and a flow limiting plate is inserted inside each square seat.

[0011] Preferably, a group of first movable components are fixedly installed on the outer surface wall of each flow limiting plate, a second movable component is fixedly installed on one side of the inner wall of each exhaust air chamber, a damping rod is fixedly inserted inside each first movable component, and the shaft ends of each damping rod are respectively fixedly inserted inside a corresponding second movable component.

[0012] Preferably, an external joint is fixedly communicated with the air inlet end of each air guiding joint, a flow splitting component is fixedly communicated between the air inlet ends of each group of external joints, an external frame is fixedly installed on the outer surface wall of each flow splitting component, and a pressurizing box is fixedly installed on the outer surface wall of each external frame.

[0013] Preferably, an air inlet joint is fixedly communicated with the top of each pressurizing box, a conveying pipeline is fixedly communicated with the outer surface wall of each pressurizing box, and the exhaust end of the conveying pipeline respectively penetrates through the outer surface wall of a corresponding flow splitting component and is communicated with the inside of the flow splitting component.

[0014] Preferably, one end of the top foil body is fixedly installed with a first extended positioning plate, both ends of each first extended positioning plate are fixedly installed with second extended positioning plates, and every two opposite second extended positioning plates form a group. Both ends of each wave foil member are fixedly installed with third extended positioning plates, and every two opposite third extended positioning plates form a group.

[0015] Preferably, a group of the second extended positioning plates, the third extended positioning plates and a first extended positioning plate form a first assembly. Lining plates are arranged between every other three groups of the third extended positioning plates. Three groups of the second extended positioning plates, the third extended positioning plates and three lining plates form three second assemblies, and a group of through round holes are opened inside each of the three second assemblies and the first assembly.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, when the spindle speed increases, the friction coefficient with the gas increases, and the temperature also shows an increasing trend. At this time, the air pressure inside the cavity is high, and the generated reverse thrust can realize the expansion of the top foil body. Furthermore, the air ducts will shift to varying degrees. The relevant sensing components can be disengaged from the air ducts under the cooperation of the mechanical components, and the detected signals are directly shared with the fan system. The air supply inside the cavity is briefly stopped. Due to the disappearance of the air source and the characteristic of the gas flowing towards the low pressure, the consumption of the gas inside the cavity can be accelerated. After the air pressure range is reduced to a certain range, each component resets and continues to supply gas. In this way, the bearing can have the ability of intermittent air guiding, avoiding the wave foil members being in a squeezed state for a long time, preventing the generation of single-direction external force impact, reducing the deformation probability of the wave foil members, and prolonging the service life of the bearing.

[0018] 2. In the present invention, under the coordination of the air guiding component and the intervention component, the released gas can be set according to the rotation direction of the spindle. In this way, it is convenient to form the initial air film flow direction, ensure that the air film can tend to be stable in a short time, without being guided by the centripetal force provided by the spindle, accelerate the spindle stabilization time, and improve the fan startup efficiency.

[0019] 3. In the present invention, the provided bearing adopts a modular design. The main part can be assembled from multiple components, and with the cooperation of the associated components, the disassembly and assembly difficulty of the bearing is effectively reduced. At the same time, each wave foil member is independent of each other. If one of them is deformed, it is not necessary to replace all of them, thus greatly reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional front view structure diagram of a detachable air suspension fan bearing of the present invention;

[0021] Figure 2 For a detachable air suspension fan bearing of the present invention Figure 13D enlarged view of Structure A

[0022] Figure 3 3D view of the middle layer structure of the main body in a detachable air suspension fan bearing of the present invention;

[0023] Figure 4 3D view of the inner layer structure of the main body in a detachable air suspension fan bearing of the present invention;

[0024] Figure 5 3D enlarged view of a partial structure in a detachable air suspension fan bearing of the present invention;

[0025] Figure 6 A detachable air suspension fan bearing of the present invention is Figure 5 3D enlarged view of the structure at B;

[0026] Figure 7 3D enlarged view of the connected structure of the exhaust air chamber in a detachable air suspension fan bearing of the present invention;

[0027] Figure 8 Schematic diagram of the operation of a detachable air suspension fan bearing of the present invention.

[0028] In the figure: 1. Base foil part; 2. Wave foil part; 3. First extended positioning plate; 4. Top foil body; 5. Notch; 6. Extended top foil part; 7. Air guide joint; 8. Hole; 9. Blocking frame; 10. Positioning base; 11. Drainage plate; 12. Exhaust air chamber; 13. Air intake hole; 14. Square seat; 15. Flow limiting plate; 16. First movable component; 17. Second movable component; 18. Damping rod; 19. Air guide cavity; 20. Telescopic tube; 21. Arc surface induction nozzle; 22. Active spring; 23. External joint; 24. Shunt component; 25. External frame; 26. Booster tank; 27. Air intake joint; 28. Second extended positioning plate; 29. Third extended positioning plate; 30. Lining plate; 31. Through round hole. Detailed implementation method

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to the attached Figure 1 - attached Figure 7As shown in the figure, the present invention provides a technical solution: a detachable air suspension fan bearing, including four base foil parts 1, each inner surface wall of the base foil part 1 is provided with a wave foil part 2, and a top foil body 4 is arranged between the inner surface walls of the four wave foil parts 2.

[0031] Example 1, according to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7 As shown, a notch 5 is formed on the inner surface wall of the top foil body 4, an extended top foil part 6 is fixedly installed at one end of the top foil body 4, the extended top foil part 6 is movably placed inside the notch 5, and a plurality of gas guiding joints 7 are fixedly communicated with the outer surface wall of the extended top foil part 6. A plurality of holes 8 are formed inside the four wave foil parts 2, and a plurality of gas guiding cavities 19 are fixedly inserted inside the four base foil parts 1. A telescopic tube 20 is movably inserted into each gas guiding cavity 19, and an arc-shaped induction nozzle 21 is fixedly communicated with the exhaust end of each telescopic tube 20. An active spring 22 is fixedly installed between each gas guiding cavity 19 and the arc-shaped induction nozzle 21, and each active spring 22 is respectively movably sleeved on the outer surface wall of a corresponding telescopic tube 20.

[0032] The overall effect achieved by the entire Example 1 is as follows: By setting the above components, during the operation of the bearing, each gas guiding cavity 19 completes the transportation of gas and continuously injects it between the top foil body 4 and the main shaft. Since an extended top foil part 6 is integrally installed at one end of the top foil body 4, the integrity of the top foil body 4 can be ensured, avoiding gas escape caused by gaps during the inner diameter expansion after the gas film is formed. When the main shaft runs, the gas film formed in the cavity can provide support for the shaft body from multiple directions. When the rotational speed of the main shaft increases, the friction coefficient with the gas increases, and the temperature also shows an upward trend. At this time, the air pressure inside the cavity is high, and the generated reverse thrust can realize the expansion of the body of the top foil body 4, thereby realizing the displacement of the air duct. The relevant induction components can be disengaged from the air duct under the cooperation of the mechanical components, and the detected signals are directly shared with the fan system. The gas supply inside the cavity is briefly stopped. Due to the disappearance of the gas source and the tendency of the gas to flow to low pressure, the consumption of the gas inside the cavity can be accelerated. After the air pressure range is reduced to a certain range, each component resets and continues to supply gas. In this way, the bearing can be equipped with the ability of intermittent gas guiding, avoiding the wave foil part 2 from being in a squeezed state for a long time, preventing the generation of unidirectional external force impact, reducing the deformation probability of the wave foil part 2, and extending the service life of the bearing.

[0033] Discuss the gas guiding joints 7, holes 8 and gas guiding cavities 19 proposed in Example 1:

[0034] The plurality of gas guiding joints 7 provided are equidistantly distributed on the outer surface wall of the top foil body 4. Therefore, the top foil body 4 will produce different degrees of displacement during expansion and retraction.

[0035] Multiple sets of holes 8 are evenly distributed in each wave foil piece 2, and the inner diameter dimension of the wave foil piece 2 is larger than that of the air guiding cavity 19. The purpose is that when the wave foil piece 2 deforms, the set holes 8 will also change to a certain extent. However, flattening the surface is not enough to affect the initial position of each air guiding cavity 19, so as to achieve the mutual independence of the air guiding cavity 19 and the wave foil piece 2 and avoid restricting the original function of the wave foil piece 2.

[0036] The initial spacing distance between the exhaust end of the air guiding cavity 19 and the top foil body 4 is relatively long. This setting method can avoid restricting the expansion of the top foil body 4.

[0037] Example 2, according to Figure 2 and Figure 7 As shown, a set of exhaust air chambers 12 are fixedly installed on the inner surfaces of the top foil body 4 and the extended top foil piece 6. A set of air inlet holes 13 are opened inside each exhaust air chamber 12. Each air inlet hole 13 is respectively communicated with a corresponding air guiding joint 7. A set of positioning bases 10 are fixedly installed on the inner surfaces of the top foil body 4 and the extended top foil piece 6. Drainage plates 11 are fixedly installed on the outer surfaces of each positioning base 10. Cross bars are fixedly inserted on both sides of the inner wall of each exhaust air chamber 12, and square seats 14 are movably sleeved on the outer surfaces of each cross bar. A flow limiting plate 15 is inserted into each square seat 14. A set of first movable components 16 are fixedly installed on the outer surface of each flow limiting plate 15. A second movable component 17 is fixedly installed on one side of the inner wall of each exhaust air chamber 12. A damping rod 18 is fixedly inserted into each first movable component 16. The shaft ends of each damping rod 18 are respectively fixedly inserted into the corresponding second movable component 17. A blocking frame 9 is fixedly installed inside the exhaust air chamber 12.

[0038] The overall effect achieved by the entire Example 2 is as follows: This part of the components is divided into two parts. One is the air guiding component, and the other is the intervention component, so that the released gas can be set according to the rotation direction of the main shaft. In this way, it is convenient to form the initial air film flow direction, ensure that the air film can tend to be stable in a short time, and does not require the centripetal force provided by the main shaft to guide, thereby accelerating the stable time of the main shaft and improving the starting efficiency of the fan.

[0039] Example 3, according to Figure 1 、 Figure 2 and Figure 3As shown, an external joint 23 is fixedly connected to the air inlet end of each air guide joint 7. A flow splitting assembly 24 is fixedly connected between the air inlet ends of each group of external joints 23. An external frame 25 is fixedly installed on the outer surface wall of each flow splitting assembly 24. A pressurizing tank 26 is fixedly installed on the outer surface wall of each external frame 25. An air inlet joint 27 is fixedly connected to the top of each pressurizing tank 26. A conveying pipeline is fixedly connected to the outer surface wall of each pressurizing tank 26, and the exhaust end of the conveying pipeline penetrates through the outer surface wall of a corresponding flow splitting assembly 24 and is connected to the inside of the flow splitting assembly 24.

[0040] The effect achieved by the entire Embodiment 3 is as follows: By presetting the above components, the provided pressurizing tank 26 is used as a gas transfer medium, and the gas is secondarily pressurized by utilizing the inflow volume. On the one hand, when the gas supply is briefly removed, the continuously conveyed gas can be temporarily stored in the pressurizing tank 26. On the other hand, it ensures that the gas can be injected into the cavity at high speed from multiple directions.

[0041] Embodiment 4, according to Figure 1 、 Figure 2 and Figure 3 As shown, a first extended positioning plate 3 is fixedly installed at one end of the top foil body 4. Second extended positioning plates 28 are fixedly installed at both ends of each first extended positioning plate 3, and every two opposite second extended positioning plates 28 form a group. Third extended positioning plates 29 are fixedly installed at both ends of each wave foil part 2, and every two opposite third extended positioning plates 29 form a group. A group of second extended positioning plates 28, third extended positioning plates 29, and a first extended positioning plate 3 constitute a first assembly. Lining plates 30 are provided between the other three groups of third extended positioning plates 29. Three groups of second extended positioning plates 28, third extended positioning plates 29, and three lining plates 30 constitute three second assemblies, and a set of through-round holes 31 are opened inside the three second assemblies and a first assembly.

[0042] The effect achieved by the entire Embodiment 4 is as follows: The provided bearing mainly consists of three parts, namely a base foil part 1, a wave foil part 2, and a top foil body 4. It adopts a modular design, and the main body part can be assembled from multiple components. With the cooperation of related components, the disassembly and assembly difficulty of the bearing is effectively reduced.

[0043] The working principle of the bearing is as follows: in the positioning stage, the main structure is first assembled, and each corrugated foil piece 2 is merged with the inner wall of a corresponding base foil piece 1 in turn, and the top foil body 4 is placed inside the corrugated foil piece 2. Each component is fine-tuned so that the first extended positioning plate 3, the second extended positioning plate 28, the third extended positioning plate 29 and the inner lining plate 30 can all fit correspondingly, and the built-in through circular holes 31 of the first assembly part and the second assembly part formed are all in a flush state. Select a suitable locking part to fix the bearing body. After completion, it is assembled into the bearing box at the front end of the fan, and the external air pipe is connected and fixed with the air inlet joint 27 in turn. At this time, the main shaft of the fan is placed inside the top foil body 4.

[0044] During the startup phase, the gas is continuously transported through the outer tube into each booster box 26. As the volume of the gas inside increases, the air pressure intensity gradually increases, and part of the gas is continuously squeezed into the connected transport pipe. The gas is then evenly distributed to each gas guide cavity 19 by the diverter assembly 24, and then transported into each exhaust bin 12 through the telescopic tube 20 and the gas guide joint 7. At this time, the high-speed flowing gas will apply pressure thrust to the reverse side of each flow limiting plate 15. By utilizing the movable connection between the cross bar and the square seat 14, the airway of each exhaust bin 12 is in an open state. After being blocked by each guide plate 11, multiple beams of continuously flowing gas are injected between the top foil body 4 and the main shaft in a circular flow manner. After the main shaft rotates, the gas flowing in the same direction can assist the main shaft to rotate, avoid reverse friction, and quickly form an air film between the top foil body 4 and the outer wall of the main shaft.

[0045] During the operation phase, when the spindle load increases, the initial rotational speed increases, the friction frequency with the gas medium increases, forcing the internal temperature to show an upward trend, increasing the original air pressure of the air film. During this process, the top foil body 4 begins to expand outward, and some of the extended top foil parts 6 will slowly slide out of the notch 5. At the same time, the positions of each air guiding joint 7 also show varying degrees of displacement. As the displacement continues to increase, the inclined surface of each arc-shaped induction nozzle 21 gradually disengages from the corresponding air guiding joint 7. The generated induction signal will be shared in real time with the fan system, and the relevant air valves will close the gas supply. Subsequently, the air film between the top foil body 4 and the spindle begins to self-consume. During this process, after the reverse side of each flow limiting plate 15 loses the thrust, the damping rod 18 in the compressed state can extend its inner shaft out of the cavity under the reverse push of the built-in spring, which is achieved by utilizing the movement characteristics of the first movable component 16 and the second movable component 17. When the flow limiting plate 15 is reset, its reverse side can fully cover the blocking frame 9, thereby restricting the rotational orientation of the flow limiting plate 15 and preventing the gas in the air film from flowing back into the guiding channel. After the air pressure continues to decrease, the extended top foil parts 6 begin to reset, the top foil body 4 begins to contract, and each air guiding joint 7 also slowly resets to its original position. During this process, when the outer wall of each air guiding joint 7 contacts the inclined surface of the corresponding arc-shaped induction nozzle 21, the generated reverse thrust can force the telescopic tube 20 to retract into the air guiding cavity 19 by utilizing the movable connection between the telescopic tube 20 and the air guiding cavity 19, and the active spring 22 is in a compressed state. When the air guiding joint 7 and the arc-shaped induction nozzle 21 are opposite to each other, the reverse force generated by the active spring 22 will push the arc-shaped induction nozzle 21 to accurately insert into the air inlet end of the air guiding joint 7 to reconstruct the air passage again. When the inclined surface of each air guiding joint 7 is completely covered, the obtained signal can be quickly known by the fan system and gas transportation is carried out.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A detachable air suspension fan bearing, characterized in that: The invention comprises four base foil members (1), each of which is provided with a corrugated foil member (2) on its inner surface wall, a top foil body (4) is provided between the inner surface walls of the four corrugated foil members (2), a notch (5) is provided on the inner surface wall of the top foil member (4), an extended top foil member (6) is fixedly installed at one end of the top foil member (4), the extended top foil member (6) is movably placed inside the notch (5), the outer surface wall of the extended top foil member (6) is fixedly connected with a plurality of groups of air guide joints (7), a plurality of groups of holes (8) are provided inside the four corrugated foil members (2), a group of exhaust bins (12) are fixedly installed on the inner surface walls of the top foil member (4) and the extended top foil member (6), and each of the top foil members (4) and the extended top foil member (6) has a plurality of groups of holes (8) arranged inside the four corrugated foil members (2), and a group of exhaust bins (12) are fixedly installed on the inner surface walls of the top foil member (4) and the extended top foil member (6). A group of air inlet holes (13) are provided inside the exhaust bin (12), and each of the air inlet holes (13) is connected to a corresponding air guide joint (7). A plurality of air guide cavities (19) are fixedly inserted inside the four base foil pieces (1), and a telescopic tube (20) is movably inserted inside each of the air guide cavities (19). The exhaust end of each of the telescopic tubes (20) is fixedly connected to a curved induction nozzle (21), and an active spring (22) is fixedly installed between each of the air guide cavities (19) and the curved induction nozzle (21), and each of the active springs (22) is movably sleeved on the outer wall of a corresponding telescopic tube (20).

2. The detachable air suspension fan bearing according to claim 1 is characterized in that: A group of positioning bases (10) are fixedly mounted on the inner surface walls of the top foil body (4) and the extended top foil member (6), a guide plate (11) is fixedly mounted on the outer surface wall of each positioning base (10), and a blocking frame (9) is fixedly mounted inside the exhaust bin (12).

3. The detachable air suspension fan bearing according to claim 1 is characterized in that: Cross bars are fixedly inserted on both sides of the inner wall of each exhaust bin (12), and a square seat (14) is movably sleeved on the outer wall of each cross bar, and a limiting plate (15) is inserted inside each square seat (14).

4. The detachable air suspension fan bearing according to claim 3 is characterized in that: A group of first movable components (16) are fixedly mounted on the outer wall of each of the limiting plates (15), a second movable component (17) is fixedly mounted on one side of the inner wall of each of the exhaust bins (12), a damping rod (18) is fixedly inserted inside each of the first movable components (16), and the axial end of each of the damping rods (18) is fixedly inserted inside a corresponding second movable component (17).

5. The detachable air suspension fan bearing according to claim 1 is characterized in that: The air inlet end of each of the air guide joints (7) is fixedly connected to an external joint (23), the air inlet ends of each group of the external joints (23) are fixedly connected to a flow diversion component (24), the outer wall of each of the flow diversion components (24) is fixedly mounted with an external frame (25), and the outer wall of each of the external frames (25) is fixedly mounted with a boost box (26).

6. The detachable air suspension fan bearing according to claim 5 is characterized in that: The top of each boost box (26) is fixedly connected to an air inlet connector (27), the outer wall of each boost box (26) is fixedly connected to a delivery pipeline, and the exhaust end of the delivery pipeline passes through the outer wall of a corresponding diversion component (24) and is connected to the interior of the diversion component (24).

7. The detachable air suspension fan bearing according to claim 1 is characterized in that: A first extended positioning plate (3) is fixedly mounted on one end of the top foil body (4), second extended positioning plates (28) are fixedly mounted on both ends of each of the first extended positioning plates (3), and every two of the second extended positioning plates (28) form a group, and third extended positioning plates (29) are fixedly mounted on both ends of each of the corrugated foil pieces (2), and every two of the third extended positioning plates (29) form a group.

8. The detachable air suspension fan bearing according to claim 7 is characterized in that: A group of the second extended positioning plates (28), the third extended positioning plates (29) and a first extended positioning plate (3) constitute a first assembly component, and inner lining plates (30) are provided between the other three groups of the third extended positioning plates (29). The three groups of the second extended positioning plates (28), the third extended positioning plates (29) and the three inner lining plates (30) constitute three second assembly components, and a group of through circular holes (31) are provided inside the three second assembly components and the first assembly component.

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