CN219605860U - Split type bearing seat structure for welding radial air bearing - Google Patents
Split type bearing seat structure for welding radial air bearing Download PDFInfo
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- CN219605860U CN219605860U CN202320741405.5U CN202320741405U CN219605860U CN 219605860 U CN219605860 U CN 219605860U CN 202320741405 U CN202320741405 U CN 202320741405U CN 219605860 U CN219605860 U CN 219605860U
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Abstract
The split bearing seat structure comprises a bearing seat, a wave foil and a top foil, wherein the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted in the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a wave foil, the inner side of the wave foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, the wave foil and the top foil are fixedly connected by welding, and the wave foil and the stainless steel sleeve are fixedly connected by welding. The stainless steel sleeve has high strength and good welding stability, and the connection strength after being welded with the top foil is greatly improved; the wave foil and the top foil are fixedly welded, the wave foil and the stainless steel sleeve are fixedly welded, the top foil and the stainless steel sleeve are more firmly connected, the loose top foil can not occur, the displacement of the top foil and the wave foil can be avoided, the stability of forming an air film is ensured, and the stability of the whole bearing is improved.
Description
Technical field:
the utility model relates to a split bearing seat structure for welding a radial air bearing.
The background technology is as follows:
the radial air bearing supports the spindle to run at high speed by utilizing the compression effect of the air film between the top foil and the spindle, as in the patent application published under number CN214661483U, which discloses a radial foil air dynamic pressure bearing, which mainly consists of an outer bearing seat, a middle wave foil and an inner top foil. Wherein, the one end of top foil is the free end, fixes through the screw between the other end of top foil and the bearing frame, and this kind of structure is poor at long-time during operation stability, and the screw becomes flexible easily, leads to top foil to take place axial and radial displacement, and the air film can't form, loses the supporting effect to the rotor.
In summary, the above-mentioned problems in radial air bearings have become a technical problem to be solved in the industry.
The utility model comprises the following steps:
the utility model provides a split type bearing seat structure for welding a radial air bearing, which solves the problem that the traditional bearing seat and top foil are easy to loosen and displace through screw fixation in order to make up the defects of the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the split bearing seat structure comprises a bearing seat, a wave foil and a top foil, wherein the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted in the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a wave foil, the inner side of the wave foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, the wave foil and the top foil are fixedly connected by welding, and the wave foil and the stainless steel sleeve are fixedly connected by welding.
The aluminum base and the stainless steel sleeve are fixedly connected in an interference hot-fitting manner.
The slot comprises a groove or a through slot.
The wave foil is a monolithic wave foil.
The fixed end of the wave foil is fixedly connected with the bending part of the fixed end of the top foil in a welding way.
And a welding groove is formed in the side wall of the stainless steel sleeve corresponding to the fixed end of the corrugated foil, and the stainless steel sleeve is fixedly connected with the corrugated foil by welding in the welding groove.
The wave foil is a split wave foil.
The fixed end of the wave foil is fixedly connected with the top foil in a welding way.
And the side wall of the stainless steel sleeve is provided with a welding groove corresponding to the fixed end of each corrugated foil, and the stainless steel sleeve is fixedly connected with each corrugated foil by welding in the welding groove.
The inner surface of the top foil is sprayed with a wear-resistant coating, and the wear-resistant coating comprises a molybdenum disulfide coating, a polytetrafluoroethylene coating or a DLC coating.
The utility model adopts the scheme and has the following advantages:
the bearing seat is divided into two parts, namely the aluminum base and the stainless steel sleeve, so that the integral aluminum bearing seat in the past is replaced, the stainless steel sleeve is high in strength and good in welding stability, and the connection strength of the stainless steel sleeve and the top foil after welding is greatly improved; the wave foil and the top foil are fixedly welded, and the wave foil and the stainless steel sleeve are fixedly welded, so that the structure that the top foil and the bearing seat are fixed through screws in the past is replaced, the top foil and the stainless steel sleeve are more firmly connected, the loose top foil is avoided, the displacement of the top foil and the wave foil can be avoided, the stability of an air film is guaranteed, and the stability of the whole bearing is improved.
Description of the drawings:
fig. 1 is a schematic front perspective view of the present utility model.
Fig. 2 is a schematic rear perspective view of the present utility model.
Fig. 3 is a schematic perspective view of the utility model with the base removed.
Fig. 4 is a schematic cross-sectional view of fig. 3.
Fig. 5 is a schematic structural view of the wave foil and top foil of the present utility model.
In the figure, 1, an aluminum base, 2, a stainless steel sleeve, 3, a slot, 4, a corrugated foil, 5, a top foil, 6, a bending part, 7 and a welding groove.
The specific embodiment is as follows:
in order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-5, a split bearing seat structure for welding a radial air bearing comprises a bearing seat, a corrugated foil 4 and a top foil 5, wherein the bearing seat comprises an aluminum base 1 and a stainless steel sleeve 2, a mounting hole is formed in the center of the aluminum base 1, and the stainless steel sleeve 2 is inserted in the mounting hole and fixedly connected with the aluminum base 1 in an interference fit manner; the slot 3 has been seted up along the axial to the lateral wall of stainless steel sleeve 2, and stainless steel sleeve 2 inboard is equipped with ripples foil 4, and ripples foil 4 inboard is equipped with top foil 5, and the both ends of top foil 5 are equipped with the bending portion 6 of inserting in slot 3 respectively, and the welding links firmly between ripples foil 4 and the top foil 5, and the welding links firmly between ripples foil 4 and the stainless steel sleeve 2, and the material of ripples foil 4 and top foil 5 adopts GH4169 alloy, and the joint strength after stainless steel sleeve 2 and GH4169 alloy welding promotes greatly.
The aluminum base 1 and the stainless steel sleeve 2 are fixedly connected through interference fit, specifically, the aluminum base 1 is heated and expanded firstly, then the stainless steel sleeve 2 is inserted into a mounting hole, and after the aluminum base 1 is cooled, the aluminum base 1 and the stainless steel sleeve 2 are fixedly connected through interference fit according to the principle of thermal expansion and contraction.
The slot 3 comprises a groove or a through slot. Preferably, the slot 3 is designed as a through slot, so that on one hand, the direct wire cutting is convenient to process, and on the other hand, the through slot can enable the stainless steel sleeve 2 to have certain elastic deformation capability, and the stainless steel sleeve can be connected with the aluminum base 1 more tightly when being hot-set.
The corrugated foil 4 comprises two structural forms, one is an integral corrugated foil and is arranged in an integral annular mode, the bending part of the fixed end of the corrugated foil 4 and the fixed end of the top foil 5 is welded and fixedly connected, a multi-point spot welding or continuous welding mode can be adopted, the inner side of the top foil 5 is directly contacted with a main shaft and cannot be provided with welding spots, the corrugated foil 4 and the stainless steel sleeve 2 cannot be welded and fixed from the inner side, meanwhile, the stainless steel sleeve 2 has a certain thickness, a welding groove 7 is formed in the side wall of the stainless steel sleeve 2 corresponding to the fixed end of the corrugated foil 4, the stainless steel sleeve 2 is fixedly connected with the corrugated foil 4 through welding in the welding groove 7, and the corrugated foil 4 is fixed through welding from the outer side of the stainless steel sleeve 2.
The other is split type corrugated foil, the split type corrugated foil is distributed in an arc-shaped sheet manner, the fixed end of each corrugated foil 4 is fixedly connected with the top foil 5 in a welding way, a multipoint spot welding or continuous welding way can be adopted, the positions, corresponding to the fixed end of each corrugated foil 4, of the side wall of the stainless steel sleeve 2 are respectively provided with a welding groove 7, and the stainless steel sleeve 2 is fixedly connected with each corrugated foil 4 by welding in the welding grooves 7.
The inner surface of the top foil 5 is sprayed with a wear-resistant coating, and the wear-resistant coating comprises a molybdenum disulfide coating, a polytetrafluoroethylene coating or a DLC coating, so that the wear can be reduced, and the service life can be prolonged.
During assembly, the utility model comprises two assembly modes, namely, firstly, the aluminum base 1 and the stainless steel sleeve 2 are subjected to interference hot fitting, then the corrugated foil 4 and the top foil 5 are welded and fixedly connected to form a whole, then the corrugated foil 4 and the top foil 5 are placed in the inner hole of the stainless steel sleeve 2, the bending parts 6 at the two ends of the top foil 5 are inserted into the slots 3, and finally, the corrugated foil 4 and the stainless steel sleeve 2 are welded and fixedly connected to finish the whole assembly process. The other is that firstly, the wave foil 4 and the top foil 5 are welded and fixedly connected to form a whole, then the wave foil 4 and the top foil 5 are placed in the inner holes of the stainless steel sleeve 2, the bending parts 6 at the two ends of the top foil 5 are inserted into the slots 3, then, the wave foil 4 and the stainless steel sleeve 2 are welded and fixedly connected, and finally, the aluminum base 1 and the stainless steel sleeve 2 are subjected to interference hot mounting, so that the whole assembly process is completed.
The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (10)
1. The utility model provides a split type bearing frame structure of welding radial air bearing, includes bearing frame, ripples foil and top foil, its characterized in that: the bearing seat comprises an aluminum base and a stainless steel sleeve, a mounting hole is formed in the center of the aluminum base, and the stainless steel sleeve is inserted into the mounting hole and fixedly connected with the aluminum base in an interference fit manner; the side wall of the stainless steel sleeve is provided with a slot along the axial direction, the inner side of the stainless steel sleeve is provided with a wave foil, the inner side of the wave foil is provided with a top foil, two ends of the top foil are respectively provided with a bending part inserted into the slot, the wave foil and the top foil are fixedly connected by welding, and the wave foil and the stainless steel sleeve are fixedly connected by welding.
2. A split bearing housing structure for a welded radial air bearing according to claim 1, wherein: the aluminum base and the stainless steel sleeve are fixedly connected in an interference hot-fitting manner.
3. A split bearing housing structure for a welded radial air bearing according to claim 1, wherein: the slot comprises a groove or a through slot.
4. A split bearing housing structure for a welded radial air bearing according to claim 1, wherein: the wave foil is a monolithic wave foil.
5. A split bearing housing structure for a welded radial air bearing as defined in claim 4 wherein: the fixed end of the wave foil is fixedly connected with the bending part of the fixed end of the top foil in a welding way.
6. A split bearing housing structure for a welded radial air bearing as defined in claim 4 wherein: and a welding groove is formed in the side wall of the stainless steel sleeve corresponding to the fixed end of the corrugated foil, and the stainless steel sleeve is fixedly connected with the corrugated foil by welding in the welding groove.
7. A split bearing housing structure for a welded radial air bearing according to claim 1, wherein: the wave foil is a split wave foil.
8. A split bearing housing structure for a welded radial air bearing as defined in claim 7 wherein: the fixed end of the wave foil is fixedly connected with the top foil in a welding way.
9. A split bearing housing structure for a welded radial air bearing as defined in claim 7 wherein: and the side wall of the stainless steel sleeve is provided with a welding groove corresponding to the fixed end of each corrugated foil, and the stainless steel sleeve is fixedly connected with each corrugated foil by welding in the welding groove.
10. A split bearing housing structure for a welded radial air bearing according to claim 1, wherein: the inner surface of the top foil is sprayed with a wear-resistant coating, and the wear-resistant coating comprises a molybdenum disulfide coating, a polytetrafluoroethylene coating or a DLC coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320741405.5U CN219605860U (en) | 2023-03-31 | 2023-03-31 | Split type bearing seat structure for welding radial air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320741405.5U CN219605860U (en) | 2023-03-31 | 2023-03-31 | Split type bearing seat structure for welding radial air bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219605860U true CN219605860U (en) | 2023-08-29 |
Family
ID=87745352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320741405.5U Active CN219605860U (en) | 2023-03-31 | 2023-03-31 | Split type bearing seat structure for welding radial air bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219605860U (en) |
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2023
- 2023-03-31 CN CN202320741405.5U patent/CN219605860U/en active Active
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