Radial air bearing

Abstract

This application relates to the field of bearings, and more particularly to a radial air bearing. The radial air bearing includes an inner ring, an outer ring, and support members. The outer ring is disposed around the outer side of the inner ring. Multiple support members are arranged circumferentially around the inner ring. A limiting groove is formed on the inner wall of the outer ring, corresponding to each support member, and the support members are respectively disposed on the corresponding limiting groove. Each support member has spaced-apart support beams, which elastically deform under the force transmitted by the inner ring and return to their initial state when the force is removed. Therefore, the support members of this application do not exhibit mutual interference or are prone to permanent plastic deformation, effectively improving the load-bearing capacity and operational stability of the radial air bearing, and greatly ensuring its service life and operational reliability.

Description

Technical Field

[0001] This application relates to the field of bearings, and more particularly to a radial air bearing. Background Technology

[0002] Hydrodynamic air bearings offer advantages such as oil-free lubrication, frictionless operation, and easy maintenance, and are now widely used in various high-speed rotating machinery. Current hydrodynamic air bearings employ a foil-type structure, with core components including a top foil and corrugated foil. The corrugated foil can be integrally stamped from a single sheet of metal foil, forming multiple sets of corrugated arch support structures.

[0003] However, during the high-speed rotation of the shaft within the hydrodynamic air bearing, a hydrodynamic air film forms between the shaft and the top foil. The pressure of this film can be transmitted from the top foil to the lower corrugated foil. When the corrugated foil is subjected to a load and undergoes significant deformation, it is prone to irreversible plastic deformation, which can lead to irreversible damage to the bearing and severely impact its operational reliability. Summary of the Invention

[0004] This application provides a radial air bearing to solve the problem that irreversible plastic deformation easily occurs when existing corrugated foils are subjected to large deformations under load.

[0005] This application provides a radial air bearing, comprising an inner bearing ring, an outer bearing ring, and support members. The outer bearing ring is disposed around the outer side of the inner bearing ring. Multiple support members are arranged circumferentially around the inner bearing ring. A limiting groove is formed on the inner sidewall of the outer bearing ring, corresponding to each of the support members. The support members are respectively disposed on the corresponding limiting grooves. Each support member has spaced-apart support beams, which elastically deform under the force transmitted by the inner bearing ring and return to their initial state when the force is removed.

[0006] Furthermore, the multiple support members are arranged end to end to cooperate in forming a polygonal structure.

[0007] Furthermore, the limiting groove extends through the outer ring of the bearing along the axial direction of the outer ring.

[0008] Furthermore, the support is made of a resilient metal material.

[0009] Furthermore, the radial wall thickness of the bearing inner ring is greater than 1 mm.

[0010] Furthermore, the radial air bearing also includes a reinforcing beam disposed on the support member, the reinforcing beam being located between adjacent support beams.

[0011] Furthermore, the radial air bearing also includes a first retaining ring and a second retaining ring disposed at both ends of the outer ring of the bearing, the first retaining ring and the second retaining ring being used to cooperate in limiting the axial displacement of the support member and the inner ring of the bearing.

[0012] Furthermore, the radial air bearing also includes a limiting member, a first limiting hole is formed on the first retaining ring, and a second limiting hole is formed on the inner ring of the bearing corresponding to the first limiting hole, and the limiting member is inserted into the first limiting hole and the second limiting hole.

[0013] Furthermore, the outer surface of the bearing inner ring abuts against the middle portion of the support member.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art: The radial air bearing of this application can be provided with multiple support members arranged circumferentially along the inner ring of the bearing. Each support member is independent of the others, and each support member is provided with spaced-apart support beams. Each support beam has an independent elastic deformation space, and the support beams do not overlap or constrain each other during elastic deformation under stress. When the force transmitted through the inner ring of the bearing is large, the support members can distribute the force to each support beam, significantly reducing the deformation amplitude of a single support beam and thus improving the support beam's resistance to plastic deformation. When the force transmitted through the inner ring of the bearing is removed, each support beam can return to its initial state. Therefore, the support members of this application do not suffer from mutual interference or easy permanent plastic deformation, effectively improving the load-bearing capacity and operational stability of the radial air bearing, and greatly ensuring the service life and operational reliability of the radial air bearing. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 An exploded view of a radial air bearing provided in an embodiment of this application; Figure 2 A front view of a support member for a radial air bearing provided in an embodiment of this application; Figure 3 A side view of the outer ring of a radial air bearing provided for an embodiment of this application; Figure 4 A cross-sectional view of the outer ring of a radial air bearing provided in an embodiment of this application. Figure 1 ; Figure 5 A cross-sectional view of the outer ring of a radial air bearing provided in an embodiment of this application. Figure 2 .

[0019] Explanation of reference numerals in the attached figures: 1. Inner ring of the bearing; 11. Second limiting hole; 2. Bearing outer ring; 21. Limiting groove; 211. Groove body; 3. Supporting components; 31. Supporting beams; 4. First retaining ring; 5. Second retaining ring; 6. Limiting components. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0022] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0023] To address the technical problem that corrugated foil is prone to irreversible plastic deformation when subjected to large loads in existing technologies.

[0024] To address the aforementioned technical issues, such as Figure 1 and Figure 2 As shown, the radial air bearing includes an inner ring 1, an outer ring 2, and support members 3. The outer ring 2 is arranged around the outer side of the inner ring 1. Multiple support members 3 are arranged circumferentially around the inner ring 1. The inner wall of the outer ring 2 has corresponding limiting grooves 21, with each support member 3 positioned on its respective limiting groove 21. Each support member 3 has spaced-apart support beams 31, which elastically deform under the force transmitted by the inner ring 1 and return to their initial state when the force is removed.

[0025] like Figure 1 As shown, the inner ring 1 of the bearing can have a through hole for the shaft to pass through and assemble. After the shaft is assembled into the through hole, there can be an annular gap between the outer circumferential surface of the shaft and the inner wall surface of the inner ring 1. When the shaft rotates at high speed, the gas outside the shaft will be continuously drawn into the gap due to the viscous drag effect of the shaft surface. The gas is squeezed in the gap and cannot be quickly released outward, which causes the gas pressure in the gap to continuously increase. Eventually, a dynamic pressure gas film with radial support force can be formed between the shaft and the inner ring 1. This dynamic pressure gas film can transmit the force to the support member 3 through the inner ring 1.

[0026] like Figure 4As shown, the outer ring 2 of the bearing can be coaxially arranged with the inner ring 1 of the bearing, and an installation gap for assembling the support member 3 can be formed between the outer side wall of the inner ring 1 and the inner side wall of the outer ring 2. When multiple support members 3 are sequentially assembled into the corresponding limiting grooves 21, one side of the support member 3 can abut against the inner ring 1 of the bearing, and the other side of the support member 3 can form an elastic deformation space with the inner side wall of the outer ring 2 of the bearing. When the dynamic pressure film transmits the force to the support member 3 through the inner ring 1 of the bearing, the support beam 31 on the support member 3 can bend and deform into the elastic deformation space, and the support beam 31 can recover its deformation when the force is removed.

[0027] like Figure 2 As shown, the support member 3 can be specifically shaped like a long strip. During the processing of the support member 3, a portion of the long strip support member 3 can be removed, leaving only the outer fixed frame and multiple beam-type support structures parallel to the width direction of the support member 3. This forms support beams 31 spaced apart on the support member 3. Furthermore, the radial air bearing requires the support beams 31 to have low stiffness during operation to ensure that the support beams 31 can undergo smooth elastic deformation. Therefore, by removing a portion of the support member 3 to form spaced support beams 31, this application can fully meet the low stiffness performance requirement of the radial air bearing for the support beams 31.

[0028] It is understandable that each support beam 31 on the support member 3 has an independent elastic deformation space. When the support beam 31 bears the radial force transmitted by the inner ring 1 of the bearing, each support beam 31 can bend and deform independently. There will be no deformation coupling or stress superposition between adjacent support beams 31. After the force is removed, they can independently spring back to their original positions, avoiding the defects of traditional corrugated foils that are mutually involved and prone to plastic permanent deformation during deformation.

[0029] The radial air bearing of this application can be provided with multiple support members 3 arranged circumferentially along the inner ring 1 of the bearing. Each support member 3 is independent of each other and has a spaced-apart support beam 31. Each support beam 31 has an independent elastic deformation space, and the support beams 31 do not overlap or constrain each other during elastic deformation under stress. When the force transmitted through the inner ring 1 of the bearing is large, the support member 3 can distribute the force to each support beam 31, significantly reducing the deformation amplitude of a single support beam 31, thereby improving the ability of the support beam 31 to resist plastic deformation. When the force transmitted through the inner ring 1 of the bearing is removed, each support beam 31 can return to its initial state. Therefore, the support members 3 of this application do not have the problems of mutual interference and easy permanent plastic deformation, effectively improving the load-bearing capacity and operational stability of the radial air bearing, and greatly ensuring the service life and reliability of the radial air bearing during operation.

[0030] In some embodiments, such as Figure 1 As shown, multiple support members 3 are arranged end to end to form a polygonal structure.

[0031] like Figure 1 As shown, Figure 1 The number of support members 3 can be eight, and the eight support members 3 can be combined to form an octagonal structure. Of course, it is understood that the number of support members 3 can also be arbitrary, such as 6, 10 or 12, as long as they can be combined to form a polygonal structure. Those skilled in the art can make reasonable selections according to actual use.

[0032] In the above embodiment, multiple support members 3 are arranged end-to-end to form a polygonal structure. On the one hand, the force on the inner ring 1 of the bearing can be evenly distributed circumferentially to each support member 3, significantly reducing the compressive deformation of the support beam 31 on a single support member 3. This effectively ensures that the support beam 31 will not undergo irreversible plastic deformation even under large forces, further improving the reliability of the radial air bearing. On the other hand, each support member 3 is set independently, so the deformation of a single support member 3 will not affect other support members 3. At the same time, the polygonal support members 3 can bear the force from all directions, significantly improving the load-bearing capacity and operational stability of the radial air bearing. In addition, if one of the support members 3 becomes fatigued or damaged, the failed support member 3 can be disassembled and replaced individually without replacing all the support members 3, effectively simplifying the maintenance process and reducing the cost of operation and maintenance.

[0033] In some embodiments, such as Figure 3 As shown, the limiting groove 21 extends through the outer ring 2 of the bearing along the axial direction of the outer ring 2.

[0034] like Figure 1As shown, the length of the limiting groove 21 can correspond to the axial length of the bearing outer ring 2, so that the limiting groove 21 can form a through groove structure with both ends connected. When assembling the support 3, the operator can align the support 3 with the axial groove on either side of the bearing outer ring 2 and push the support 3 in a straight line along the axial direction of the bearing outer ring 2, thereby smoothly inserting the support 3 into the limiting groove 21.

[0035] Each of the aforementioned limiting grooves 21 may also have two independent grooves 211 with their openings facing each other. When the support member 3 is inserted into the limiting groove 21, both ends of the support member 3 along its own width direction can be inserted into the corresponding grooves 211 respectively. The two grooves 211 clamp and limit the two ends of the support member 3 in the width direction, so as to stably limit the support member 3 within the limiting groove 21.

[0036] In the above embodiment, the limiting groove 21 can be arranged through the bearing outer ring 2 along the axial direction. On the one hand, the support member 3 can be directly assembled into the limiting groove 21 along the axial direction of the bearing outer ring 2, effectively simplifying the assembly process and steps of the support member 3. On the other hand, the limiting groove 21, which extends through the axial direction, can achieve uniform circumferential limiting along the length direction of the support member 3, effectively ensuring the stability and reliability of the connection between the support member 3 and the limiting groove 21. In addition, the limiting groove 21, which extends through the axial direction, also greatly facilitates the processing of the limiting groove 21, effectively reducing the processing difficulty and manufacturing cost.

[0037] In some embodiments, the support 3 is made of a resilient metal material.

[0038] The aforementioned elastic metal material can be spring steel, stainless steel, or beryllium copper alloy, etc., and this application does not make any specific limitation in this regard.

[0039] In the above embodiments, the support member 3 made of elastic metal material not only has suitable stiffness to meet the radial bearing requirements of the radial air bearing foundation, but also has excellent elastic rebound performance. The support member 3 can buffer the radial force transmitted by the inner ring 1 of the bearing by its own elastic deformation, and can autonomously restore the initial shape after the force is removed, effectively avoiding the possibility of irreversible plastic deformation of the support beam 31.

[0040] In some embodiments, the radial wall thickness of the bearing inner ring 1 is greater than 1 mm.

[0041] The radial wall thickness of the inner ring 1 of the bearing can be greater than 1 mm. For example, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, etc.

[0042] In the above embodiments, the bearing inner ring 1 with the above-mentioned radial wall thickness range can have sufficient structural rigidity to effectively resist the expansion deformation caused by the dynamic pressure air film, so that the inner sidewall of the bearing inner ring 1 can be stably maintained, and the airflow streamline inside the dynamic pressure air film will not be twisted, disordered, broken or otherwise damaged, thus ensuring that the dynamic pressure air film can continuously form a uniform and complete high-pressure support layer, thereby improving the radial load-bearing capacity of the radial air bearing.

[0043] In some embodiments, the radial air bearing further includes a reinforcing beam (not shown) disposed on the support 3, the reinforcing beam being located between adjacent support beams 31.

[0044] When it is necessary to enhance the structural strength of the support beam 31 and increase the load-bearing capacity of the support member 3, a reinforcing beam can be added between two adjacent support beams 31. The reinforcing beam can improve the structural strength of the support beam 31, preventing excessive bending deformation due to excessive stress and further reducing the risk of plastic deformation. Specifically, several reinforcing beams arranged along the width direction of the support member 3 can be placed between adjacent support beams 31 according to actual load-bearing requirements.

[0045] In the above embodiments, by setting a reinforcing beam, the structural strength of the support beam 31 can be improved. This will not completely eliminate the low-stiffness elastic deformation capability required by the support beam 31, but will also improve the overall bending and impact resistance of the support member 3, thereby further improving the reliability and safety of the radial air bearing.

[0046] In some embodiments, such as Figure 1 As shown, the inner ring 1 of the bearing has multiple rings connected in sequence, and the multiple rings are integrally formed.

[0047] The aforementioned bearing inner ring 1 has multiple rings connected end to end. All rings are manufactured using an integral molding process. The bearing inner ring 1 has no splicing gaps or segmented breaks, and the whole is a continuous and complete closed-loop ring structure.

[0048] In the above embodiments, the bearing inner ring 1 can be provided with multiple rings connected in sequence and integrally formed, so that the bearing inner ring 1 forms a complete closed-loop structure without breaks or splicing gaps, which greatly improves the structural strength and rigidity of the bearing inner ring 1. Furthermore, the bearing inner ring 1 has minimal deformation under the continuous action of the dynamic pressure air film and is not prone to expansion deformation, which can maintain the integrity and smoothness of the inner sidewall of the bearing inner ring 1, avoiding the occurrence of turbulent flow lines and breakage of the dynamic pressure air film, ensuring the uniformity and stability of the dynamic pressure air film, and effectively improving the load-bearing capacity of the radial air bearing.

[0049] In some embodiments, such as Figure 5As shown, the radial air bearing also includes a first retaining ring 4 and a second retaining ring 5 disposed at both ends of the outer ring 2 of the bearing. The first retaining ring 4 and the second retaining ring 5 are used to cooperate in limiting the axial displacement of the support member 3 and the inner ring 1 of the bearing.

[0050] The first retaining ring 4 and the second retaining ring 5 can be ring-shaped, and the rotating shaft can pass through the first retaining ring 4 or the second retaining ring 5 and enter the inner ring 1 of the bearing.

[0051] The first retaining ring 4 can be connected to the end face of one end of the outer ring 2 of the bearing using fasteners. Similarly, the second retaining ring 5 can also be connected to the end face of the other end of the outer ring 2 of the bearing using fasteners. The fasteners can specifically be bolts or screws, etc., and this application does not specifically limit their use. Of course, it is understood that the number of fasteners can be arbitrary, such as one, two, or three, etc., and those skilled in the art can make reasonable selections based on actual use.

[0052] like Figure 5 As shown, the axial width of the first retaining ring 4 can be equal to the sum of the radial thicknesses of the inner bearing ring 1 and the outer bearing ring 2, or it can be slightly smaller than the sum of the radial thicknesses. The end faces of the first retaining ring 4 and the second retaining ring 5 can simultaneously abut against the two ends of the support member 3 and the axial end of the inner bearing ring 1, thereby achieving axial positioning of the support member 3 and the inner bearing ring 1 and effectively limiting the axial movement of the support member 3 and the inner bearing ring 1 during operation.

[0053] In the above embodiment, a first retaining ring 4 and a second retaining ring 5 can be respectively provided at both ends of the outer ring 2 of the bearing. The first retaining ring 4 and the second retaining ring 5 can cooperate with each other to simultaneously abut against the support member 3 and the inner ring 1 of the bearing from the axial direction of the inner ring 1 of the bearing, thereby achieving axial positioning of the support member 3 and the inner ring 1 of the bearing. This effectively prevents the support member 3 from sliding out of the axially penetrating limiting groove 21, and also prevents the inner ring 1 of the bearing from axially moving, greatly improving the stability and reliability of the radial air bearing during high-speed operation. Furthermore, the first retaining ring 4 and the second retaining ring 5 are easy to disassemble and assemble. The damaged support member 3 can be pulled out along the axial direction by disassembling either the first retaining ring 4 or the second retaining ring 5, without disassembling the inner ring 1 of the bearing, the outer ring 2 of the bearing, etc., which greatly simplifies the maintenance process of the radial air bearing, reduces the time spent on disassembly and assembly of the radial air bearing, and lowers the maintenance cost of the radial air bearing.

[0054] In some embodiments, such as Figure 5 As shown, the radial air bearing also includes a limiting member 6. A first limiting hole is formed on the first retaining ring 4, and a second limiting hole 11 corresponding to the first limiting hole is formed on the inner ring 1 of the bearing. The limiting member 6 is inserted into the first limiting hole and the second limiting hole 11.

[0055] The first limiting hole can be formed on the side wall of the first retaining ring 4 facing the inner ring 1 of the bearing, and the second limiting hole 11 can be formed on the side wall of the inner ring 1 of the bearing facing the first retaining ring 4. The limiting member 6 can be simultaneously inserted into the first limiting hole and the second limiting hole 11 to achieve circumferential locking of the first retaining ring 4 and the inner ring 1 of the bearing. It can be understood that the limiting member 6 can specifically be a pin.

[0056] In some other embodiments, there can be multiple limiting members 6, which can be evenly spaced along the circumference of the inner ring 1 of the bearing to form multi-point circumferential limiting of the inner ring 1. Multi-point limiting can disperse the circumferential torque borne by a single limiting member 6, avoiding deformation, wear or even breakage of a single limiting member 6 due to concentrated force, thus greatly improving the reliability and safety of the radial air bearing.

[0057] In the above embodiment, by providing a first limiting hole on the first retaining ring 4 and a corresponding second limiting hole 11 on the inner bearing ring 1, and inserting the limiting member 6 into the first limiting hole and the second limiting hole 11, the inner bearing ring 1 and the first retaining ring 4 can be locked together, effectively preventing the inner bearing ring 1 from rotating circumferentially, avoiding relative sliding and wear between the inner bearing ring 1 and the support member 3, and stabilizing the uniformity of the dynamic pressure air film gap, thereby further improving the service life and operational stability of the radial air bearing.

[0058] In some embodiments, such as Figure 4 As shown, the outer surface of the inner ring 1 of the bearing abuts against the middle part of the support member 3.

[0059] The middle part of the aforementioned support member 3 can be specifically understood as the area near its central axis in the width direction of the support member 3, which corresponds to the middle part of the support beam 31. It is understood that the middle part of the support beam 31 has a larger elastic deformation margin compared to the two ends of the support beam 31, and its resilience is also superior to that of the two ends. When the bearing inner ring 1 is abutted against at this point, the good elastic characteristics of this area can be fully utilized to buffer the impact of the force, and the force distribution on the support beam 31 can be symmetrically distributed, effectively alleviating the problem of local stress concentration in the support beam 31.

[0060] In the above embodiment, the outer surface of the inner ring 1 of the bearing can abut against the middle part of the support 3. The middle part of the support 3 has better elastic deformation performance and can give full play to its elastic performance under the action of dynamic pressure air film, thus avoiding the plastic deformation of the support 3 and effectively improving the load-bearing capacity and service life of the radial air bearing.

[0061] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0062] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0063] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A radial air bearing, characterized in that, include: Inner ring of bearing; The bearing outer ring is disposed on the outside of the bearing inner ring; The support member is a plurality of supports arranged around the circumference of the inner ring of the bearing. The inner sidewall of the outer ring of the bearing has a limiting groove corresponding to each of the supports. The plurality of supports are respectively disposed on the corresponding limiting grooves. Each of the support members has spaced support beams, which are used to undergo elastic deformation when subjected to the force transmitted by the inner ring of the bearing, and to return to their initial state when the force is removed.

2. The radial air bearing according to claim 1, characterized in that, Multiple support members are arranged end to end to form a polygonal structure.

3. The radial air bearing according to claim 1, characterized in that, The limiting groove extends through the outer ring of the bearing along the axial direction of the outer ring.

4. The radial air bearing according to claim 1, characterized in that, The support is made of a flexible metal material.

5. The radial air bearing according to claim 1, characterized in that, The radial wall thickness of the inner ring of the bearing is greater than 1 mm.

6. The radial air bearing according to claim 1, characterized in that, The radial air bearing also includes a reinforcing beam disposed on the support member, the reinforcing beam being located between adjacent support beams.

7. The radial air bearing according to claim 1, characterized in that, The bearing inner ring has multiple rings connected in sequence, and the multiple rings are integrally formed.

8. The radial air bearing according to claim 1, characterized in that, The radial air bearing further includes a first retaining ring and a second retaining ring disposed at both ends of the outer ring of the bearing. The first retaining ring and the second retaining ring are used to cooperate in limiting the axial displacement of the support member and the inner ring of the bearing.

9. The radial air bearing according to claim 8, characterized in that, The radial air bearing further includes a limiting member. A first limiting hole is formed on the first retaining ring, and a second limiting hole corresponding to the first limiting hole is formed on the inner ring of the bearing. The limiting member is inserted into the first limiting hole and the second limiting hole.

10. The radial air bearing according to claim 1, characterized in that, The outer surface of the bearing inner ring abuts against the middle portion of the support member.

Images