CN209990777U - Cylindrical pin type foil fixing structure of aerodynamic foil bearing - Google Patents
Cylindrical pin type foil fixing structure of aerodynamic foil bearing Download PDFInfo
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- CN209990777U CN209990777U CN201920682474.7U CN201920682474U CN209990777U CN 209990777 U CN209990777 U CN 209990777U CN 201920682474 U CN201920682474 U CN 201920682474U CN 209990777 U CN209990777 U CN 209990777U
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- 239000011888 foil Substances 0.000 title claims abstract description 142
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of the air bearing, concretely relates to air dynamic pressure foil bearing foil fixed knot of cylindric lock formula constructs, including bearing housing, ripple foil, flat foil and two cylindric locks. A cuboid groove is formed in the inner wall of the bearing sleeve, a cylindrical groove is formed in the wall body, and a crossed part exists between the cylindrical groove and the middle of the cuboid groove and is communicated with the cylindrical groove and the cuboid groove; respectively arranging the corrugated foil and the flat foil in the bearing sleeve, inserting the break angle of the corrugated foil and the break angle of the flat foil into the cuboid groove and the cylindrical groove, and respectively embedding the two cylindrical pins into the cylindrical groove from two ends of the cylindrical groove, thereby fixing the corrugated foil and the flat foil in the bearing sleeve. The utility model discloses a design the cylinder groove that both ends can imbed the cylindric lock on the bearing housing, reach the purpose of fixed ripple foil and plain foil through utilizing the cylindric lock. Once the flat foil is worn, only the cylindrical pin needs to be taken down to replace the corrugated foil and the flat foil, the whole bearing sleeve does not need to be processed again, and time and cost are saved.
Description
Technical Field
The utility model belongs to the technical field of the air bearing, concretely relates to air dynamic pressure foil bearing foil fixed knot of cylindric lock formula constructs.
Background
The bearing is an extremely important part in modern mechanical equipment, has very wide application field, and exists from small household appliances to ships and aerospace. The bearing is a core component, but has been limiting the development of other technologies. Compared with other bearings, the gas dynamic pressure foil radial bearing has the advantages of high working speed, small friction energy consumption, long service life, wide working environment temperature range and the like. However, the flat foil and the corrugated foil in the air radial bearing are worn in the process of starting and stopping the rotating shaft, and after the rotating shaft is started and stopped for many times, the flat foil or the corrugated foil is seriously worn to cause the performance of the bearing to be reduced and even the bearing cannot successfully take off, so that the bearing needs to be replaced by a new bearing. The conventional air radial bearing fixes the flat foil and the corrugated foil on the bearing sleeve in a welding mode, which is troublesome in installation, and once the flat foil or the corrugated foil is seriously worn, the whole bearing is replaced, so that the conventional method is time-consuming and increases the cost.
The utility model discloses a design the cylinder groove that both ends can imbed the cylindric lock on the bearing housing, through utilizing the cylindric lock to reach the purpose of fixed flat foil piece and ripple foil piece. Once the flat foil or the corrugated foil is worn, the cylindrical pin is only required to be taken down to replace the flat foil or the corrugated foil, the whole bearing sleeve does not need to be processed again, and the mode not only saves time, but also greatly saves cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, make things convenient for the installation and the change of flat foil piece or ripple foil piece in the air journal bearing, the utility model provides an air dynamic pressure foil bearing foil piece fixed knot of cylindric lock formula constructs, through this kind of convenient flat foil piece or ripple foil piece change mode, can realize the reuse to the bearing housing.
The technical scheme of the utility model:
a cylindrical pin type aerodynamic foil bearing foil fixing structure comprises a bearing sleeve 1, a corrugated foil 2, a flat foil 3, a cylindrical pin a4 and a cylindrical pin b 5;
the bearing sleeve 1 is a hollow cylindrical barrel, a cuboid groove 6 is arranged on the inner wall of the bearing sleeve, and the cuboid groove 6 is communicated with the surface of the inner wall of the bearing sleeve 1 and is in an open state; a cylindrical groove 7 is formed in the wall body of the bearing sleeve 1, and the diameter of the cylindrical groove 7 is smaller than the depth of the rectangular groove 6; along the cross section direction of the cylindrical groove 7, the middle parts of the cylindrical groove 7 and the cuboid groove 6 are provided with crossed parts, so that the cylindrical groove 7 is communicated with the cuboid groove 6; the two ends of the cylindrical groove 7 are in an open state and are used for installing a cylindrical pin a4 and a cylindrical pin b 5; the rectangular groove 6 and the cylindrical groove 7 are parallel to the central axis of the bearing sleeve 1, and the rectangular groove 6 and the cylindrical groove 7 are matched with the corrugated foil break angle 8 and the flat foil break angle 9;
the corrugated foil 2 is of a hollow cylindrical structure which is not closed in the circumferential direction, the surface of the corrugated foil is provided with corrugations which are parallel to the central line of the cylindrical structure, and one end which is not closed in the circumferential direction is folded outwards to form a corrugated foil break angle 8; the size of the corrugated foil 2 is smaller than that of the bearing sleeve 1; the flat foil 3 is of a hollow cylindrical structure which is not closed in the circumferential direction and is formed by folding and surrounding a square foil through two opposite edges of the square foil, the joint of the two opposite edges is in an open state, and one edge is folded outwards to form a flat foil folding angle 9; the size of the flat foil 3 is smaller than that of the corrugated foil 2, the corrugated foil 2 is arranged in the bearing sleeve 1, the outer surface of the corrugated foil 2 is attached to the inner surface of the bearing sleeve 1, the flat foil 3 is arranged in the corrugated foil 2, the outer surface of the flat foil 3 is attached to the inner surface of the corrugated foil 2, the break angle 8 of the corrugated foil and the break angle 9 of the flat foil are inserted into the cuboid groove 6, and the cylindrical pin a4 and the cylindrical pin b5 are respectively embedded into the cylindrical groove 7 from two ends of the cylindrical groove 7, so that the corrugated foil 2 and the flat foil 3 are fixed in the bearing sleeve 1.
The utility model has the advantages that:
the utility model discloses with traditional radial gaseous dynamic pressure foil bearing different in the mode of fixed flat foil and ripple foil, traditional air radial bearing adopts the welded mode to install flat foil and ripple foil on the bearing housing, both the waste time has increased the cost again. The utility model discloses a design the cylinder groove that both ends can imbed the cylindric lock on the bearing housing, through utilizing the cylindric lock to reach the purpose of fixed flat foil piece and ripple foil piece. Once the flat foil or the corrugated foil is worn, the cylindrical pin is only required to be taken down to replace the flat foil or the corrugated foil, the whole bearing sleeve does not need to be processed again, and the mode not only saves time, but also greatly saves cost.
Drawings
Fig. 1 is a schematic view of the fixing structure of the present invention before assembly.
Fig. 2 is a schematic view of the structure of the bearing sleeve of the present invention.
Fig. 3 is a partial enlarged view of the schematic structural diagram of the bearing sleeve of the present invention.
Fig. 4 is a schematic structural view of the corrugated foil of the present invention before assembly.
Fig. 5 is a schematic structural view of the flat foil of the present invention before assembly.
Fig. 6 is a schematic structural diagram of the cylindrical pin of the present invention.
Fig. 7 is an effect diagram of the fixing structure of the present invention after assembly.
Fig. 8 is an enlarged view of the effect diagram of the fixing structure after assembly.
Fig. 9 is a schematic diagram of the corrugated foil of the present invention after assembly.
Fig. 10 is a schematic view of the flat foil of the present invention after assembly.
In the figure: 1, bearing sleeves; 2 a corrugated foil; 3, flat foil; 4, a cylindrical pin a; 5 cylindrical pins b; 6, a rectangular groove; 7, a cylindrical groove; 8, folding the corrugated foil; 9 flat foil folding angle.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Referring to fig. 1, a cylinder pin type aerodynamic foil bearing foil fixing structure includes a bearing housing 1, a corrugated foil 2, a flat foil 3, a cylindrical pin a4 and a cylindrical pin b 5; the bearing sleeve 1 is used as a 'frame' of the whole structure, a cuboid groove 6 is arranged on the inner wall of the bearing sleeve, a cylindrical groove 7 is formed in the wall body, and the diameter of the cylindrical groove 7 is smaller than the depth of the cuboid groove 6; along the cross section direction of the cylindrical groove 7, the middle parts of the cylindrical groove 7 and the cuboid groove 6 are provided with crossed parts, so that the cylindrical groove 7 is communicated with the cuboid groove 6; fig. 2 and 3 show a schematic structural view of the bearing sleeve 1 and a partially enlarged view of the schematic structural view.
FIG. 4 is a schematic structural diagram of a corrugated foil 2 before assembly, wherein the corrugated foil 2 is a hollow cylindrical structure which is not closed in the circumferential direction, the surface of the hollow cylindrical structure is provided with corrugations parallel to the central line of the cylindrical structure, one end which is not closed in the circumferential direction is folded outwards to form a corrugated foil break angle 8, the length of the break angle is several millimeters, and the length is determined according to the specific size of a bearing; fig. 5 is a schematic structural diagram of the flat foil 3 before assembly, wherein the flat foil 3 is a circumferentially unclosed "cylindrical cylinder", one end of which is folded outwards to form a protrusion, which is called a flat foil fold angle 9, and the fold angle length is several millimeters, and is determined according to the specific size of the bearing.
The corrugated foil break angle 8 and the flat foil break angle 9 are arranged in the cuboid groove 6 and the cylindrical groove 7 of the bearing sleeve 1, the outer surface of the corrugated foil 2 is attached to the inner surface of the bearing sleeve 1, and the outer surface of the flat foil 3 is attached to the inner surface of the corrugated foil 2. The cylindrical pin a4 and the cylindrical pin b5 are universal standard parts, the length of the universal standard parts is not more than half of the length of the bearing sleeve 1, the cylindrical pin a4 and the cylindrical pin b5 are respectively embedded into the cylindrical groove 7 from two ends of the cylindrical groove 7 to fix the corrugated foil 2 and the flat foil 3, and the cylindrical pins are not exposed after being completely embedded. The assembled effect diagram and a partial enlarged view of the assembled effect diagram are shown in fig. 7 and 8. The corrugated foil folds 8 and the flat foil folds 9 are pressed by the cylindrical pins a4 and b5 to be deformed, and the corrugated foil 2 and the flat foil 3 are deformed as shown in fig. 9 and 10. Due to the material characteristics of the corrugated foil 2 and the flat foil 3, the deformation of the corrugated foil break angles 8 and the flat foil break angles 9 caused by the extrusion of the cylindrical pins a4 and b5 belongs to the elastic deformation of the material, so that large internal stress is formed between the corrugated foil break angles 8 and the flat foil break angles 9 and the cylindrical pins a4 and b5, and the corrugated foil 2 and the flat foil 3 are firmly fixed in the cylindrical grooves 7 during the operation of the bearing.
Claims (1)
1. A cylindrical pin type aerodynamic foil bearing foil fixing structure is characterized by comprising a bearing sleeve (1), a corrugated foil (2), a flat foil (3), a cylindrical pin a (4) and a cylindrical pin b (5);
the bearing sleeve (1) is a hollow cylindrical barrel, a cuboid groove (6) is formed in the inner wall of the bearing sleeve, and the cuboid groove (6) is communicated with the surface of the inner wall of the bearing sleeve (1) and is in an open state; the bearing sleeve (1) is characterized in that a cylindrical groove (7) is formed in the wall body of the bearing sleeve, and the diameter of the cylindrical groove (7) is smaller than the depth of the cuboid groove (6); along the cross section direction of the cylindrical groove (7), the middle parts of the cylindrical groove (7) and the cuboid groove (6) are provided with crossed parts, so that the cylindrical groove (7) is communicated with the cuboid groove (6); two ends of the cylindrical groove (7) are in an open state and are used for installing a cylindrical pin a (4) and a cylindrical pin b (5); the cuboid groove (6) and the cylindrical groove (7) are parallel to the central axis of the bearing sleeve (1), and the cuboid groove (6) and the cylindrical groove (7) are matched with the corrugated foil break angle (8) and the flat foil break angle (9) mutually;
the corrugated foil (2) is of a hollow cylindrical structure which is not closed in the circumferential direction, the surface of the corrugated foil is provided with corrugations which are parallel to the central line of the cylindrical structure, and one end which is not closed in the circumferential direction is folded outwards to form a corrugated foil break angle (8); the size of the corrugated foil (2) is smaller than that of the bearing sleeve (1); the flat foil (3) is of a hollow cylindrical structure which is not closed in the circumferential direction and is formed by folding and surrounding a square foil through two opposite edges of the square foil, the joint of the two opposite edges is in an open state, and one edge is folded outwards to form a folded angle (9) of the flat foil; the size of the flat foil (3) is smaller than that of the corrugated foil (2), the corrugated foil (2) is arranged inside the bearing sleeve (1), the outer surface of the corrugated foil (2) is attached to the inner surface of the bearing sleeve (1), the flat foil (3) is arranged inside the corrugated foil (2), the outer surface of the flat foil (3) is attached to the inner surface of the corrugated foil (2), the folded angle (8) of the corrugated foil and the folded angle (9) of the flat foil are inserted into the cuboid groove (6), and the cylindrical pin a (4) and the cylindrical pin b (5) are respectively embedded into the cylindrical groove (7) from two ends of the cylindrical groove (7), so that the corrugated foil (2) and the flat foil (3) are fixed inside the bearing sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920682474.7U CN209990777U (en) | 2019-05-13 | 2019-05-13 | Cylindrical pin type foil fixing structure of aerodynamic foil bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920682474.7U CN209990777U (en) | 2019-05-13 | 2019-05-13 | Cylindrical pin type foil fixing structure of aerodynamic foil bearing |
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| Publication Number | Publication Date |
|---|---|
| CN209990777U true CN209990777U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920682474.7U Active CN209990777U (en) | 2019-05-13 | 2019-05-13 | Cylindrical pin type foil fixing structure of aerodynamic foil bearing |
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| CN (1) | CN209990777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067808A (en) * | 2019-05-13 | 2019-07-30 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cylinder pin type |
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2019
- 2019-05-13 CN CN201920682474.7U patent/CN209990777U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067808A (en) * | 2019-05-13 | 2019-07-30 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cylinder pin type |
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