CN209990776U - Cuboid pin type air dynamic pressure foil bearing foil fixing structure - Google Patents
Cuboid pin type air dynamic pressure foil bearing foil fixing structure Download PDFInfo
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- CN209990776U CN209990776U CN201920675026.4U CN201920675026U CN209990776U CN 209990776 U CN209990776 U CN 209990776U CN 201920675026 U CN201920675026 U CN 201920675026U CN 209990776 U CN209990776 U CN 209990776U
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- 239000011888 foil Substances 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 claims description 3
- 210000005056 cell body Anatomy 0.000 claims 1
- 238000001125 extrusion Methods 0.000 claims 1
- 210000002287 horizontal cell Anatomy 0.000 claims 1
- 238000012958 reprocessing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process 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 air bearings, in particular to a cuboid pin type air hydrodynamic foil bearing foil fixing structure, which comprises a bearing sleeve, a corrugated foil, a flat foil, a cuboid pin and a screw; the corrugated foil break angle and the flat foil break angle are inserted into the L-shaped groove, the cuboid pin is embedded into the L-shaped groove, the two screws are screwed in from threaded holes in the front end and the rear end of the bearing sleeve respectively, the cuboid pin is fixed by the conical surface in the front end of the screw, and the cuboid pin is extruded to fix the corrugated foil and the flat foil in the bearing sleeve. Once the flat foil or the corrugated foil is worn, only the screw and the cuboid pin are required to be taken down, and the flat foil or the corrugated foil is replaced without reprocessing the whole bearing sleeve, so that the time is saved, and the cost is greatly 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 cuboid pin 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 and the corrugated foil are seriously worn, so that the performance of the bearing is reduced, and even the bearing cannot successfully take off, and therefore, 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 a type L type groove that can imbed the cuboid pin on the bearing housing, threaded hole is opened at the both ends of bearing housing, utilizes the screw to fix the cuboid pin in order to reach the purpose of fixed flat foil piece and ripple foil piece. Once the flat foil or the corrugated foil is worn, only the screw and the cuboid pin are required to be taken down, and the flat foil or the corrugated foil is replaced without reprocessing the whole bearing sleeve, so that the time is saved, and the cost is greatly saved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses for convenient installation and the change of flat foil and ripple foil among the air journal bearing, provide an air dynamic pressure foil bearing foil fixed knot of cuboid pin formula constructs, through this kind of convenient flat foil or ripple foil change mode, can realize the reuse to the bearing housing.
The technical scheme of the utility model:
a cuboid pin type air dynamic pressure foil bearing foil fixing structure comprises a bearing sleeve 1, a corrugated foil 2, a flat foil 3, a cuboid pin 4 and a screw 5;
the bearing sleeve 1 is a hollow cylindrical barrel, an L-shaped groove 6 is formed in the direction from the inner wall of the bearing sleeve to the wall body, and the L-shaped groove 6 is embedded in the wall body of the bearing sleeve 1 and is parallel to the central axis of the bearing sleeve 1; the L-shaped groove 6 consists of a transverse groove body and a longitudinal groove body which are communicated, wherein the longitudinal groove body is communicated with the inner wall surface of the bearing sleeve 1 and is in an open state and used for installing a corrugated foil break angle 8 and a flat foil break angle 9; the transverse groove body is positioned in the wall body of the bearing sleeve 1 and positioned on one side of the longitudinal groove body and is used for mounting a cuboid pin 4; the front end and the rear end of the L-shaped groove 6 penetrate through the front end face and the rear end face of the bearing sleeve 1 and are in an open state; inclined threaded holes 7 are respectively formed in the front end face and the rear end face of the bearing sleeve 1, the threaded holes 7 are located on one side of the transverse groove body, and the threaded holes 7 extend into the wall body of the bearing sleeve 1 to be communicated with the transverse groove body;
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 axis 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 with a smooth surface and an unclosed circumferential direction, and one end of the unclosed circumferential direction is folded outwards to form a flat foil break angle 9; the size of the flat foil 3 is smaller than that of the corrugated foil 2;
the method comprises the following steps of (1) placing a corrugated foil 2 in a bearing sleeve 1, placing a flat foil 3 in the corrugated foil 2, attaching the outer surface of the corrugated foil 2 to the inner surface of the bearing sleeve 1, attaching the outer surface of the flat foil 3 to the inner surface of the corrugated foil 2, and attaching a corrugated foil break angle 8 to a flat foil break angle 9; the corrugated foil break angle 8 and the flat foil break angle 9 are plugged into a longitudinal groove body of the L-shaped groove 6 together, the cuboid pin 4 is embedded into a transverse groove body of the L-shaped groove 6, the two screws 5 are screwed in from threaded holes 7 at the front end and the rear end of the bearing sleeve 1 respectively, the cuboid pin 4 is fixed by utilizing the conical surface at the front end of the screw 5, and the cuboid pin 4 is extruded so as to fix the corrugated foil 2 and the flat foil 3 in the bearing sleeve 1.
The central axis of the threaded hole 7 forms an included angle of 45 degrees with the length direction of the L-shaped groove 6.
The sectional dimension of cuboid pin 4 be less than the sectional dimension of type L type groove 6, be clearance fit with type L type groove 6, the length of cuboid pin 4 is no longer than the length of bearing housing 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 a class L type groove of embedding cuboid pin on the bearing housing, threaded hole is opened at the both ends of bearing housing, fixes the cuboid pin through utilizing the screw in order to reach the purpose of fixed flat foil piece and ripple foil piece. Once the flat foil or the corrugated foil is worn, only the screw and the cuboid pin are required to be taken down, and the flat foil or the corrugated foil is replaced without reprocessing the whole bearing sleeve, so that the time is saved, and the cost is greatly saved.
Drawings
Fig. 1 is a schematic view of the structure of the present invention before assembly.
Fig. 2 is a structure view of the bearing housing of the present invention.
Fig. 3 is a partial enlarged view of the bearing sleeve structure of the present invention.
Fig. 4 is a structure diagram of the corrugated foil of the present invention.
Fig. 5 is a structure diagram of the flat foil of the present invention.
Fig. 6 is a schematic view of the structure of the rectangular pin of the present invention.
Fig. 7 is a schematic view of the screw structure of the present invention.
Fig. 8 is an effect diagram of the utility model after assembly.
Fig. 9(a) and 9(b) are partial enlarged views of the assembled effect of the present invention.
In the figure: 1, bearing sleeves; 2 a corrugated foil; 3, flat foil; 4, a cuboid pin; 5, screws; a class 6L-shaped groove; 7, a threaded hole; 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 cuboid pin type aerodynamic foil bearing foil fixing structure includes a bearing housing 1, a corrugated foil 2, a flat foil 3, a cuboid pin 4 and a screw 5; the bearing sleeve 1 is used as a frame of the integral structure, an L-shaped groove 6 is formed in the inner wall of the bearing sleeve towards the inner direction of the wall body, the L-shaped groove 6 consists of a transverse groove body and a longitudinal groove body which are communicated, and the L-shaped groove 6 completely penetrates through two ends of the bearing sleeve 1 and is parallel to the central axis of the bearing sleeve 1; the longitudinal groove body is communicated with the surface of the inner wall of the bearing sleeve 1, is in an open state and is used for installing a corrugated foil break angle 8 and a flat foil break angle 9; the transverse groove body is positioned in the wall body of the bearing sleeve 1 and positioned on one side of the longitudinal groove body and is used for mounting a cuboid pin 4; threaded holes 7 are respectively formed in the front end face and the rear end face of the bearing sleeve 1, the threaded holes 7 are located near the transverse groove body of the similar L-shaped groove 6, an included angle of 45 degrees is formed between the central axis of each threaded hole 7 and the length direction of the similar L-shaped groove 6, and the threaded holes 7 are communicated with the similar L-shaped groove 6; the structure and a partially enlarged view of the bearing housing 1 are shown in fig. 2 and 3.
FIG. 4 is a structural diagram of a corrugated foil 2, 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 which are parallel to the central axis 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, and the length of the break angle is several millimeters and is determined according to the specific size of a bearing; fig. 5 is a structural diagram of a flat foil 3, wherein the flat foil 3 is a hollow cylindrical structure with a smooth surface and an unclosed circumferential direction, one end of the unclosed circumferential direction is folded outwards to form a flat foil break angle 9, the length of the break angle is several millimeters, and the length is determined according to the specific size of the bearing; FIG. 6 is a structure diagram of a cuboid pin 4, the sectional dimension of the cuboid pin 4 is slightly smaller than that of the L-shaped groove 6, clearance fit is achieved with the L-shaped groove 6, the length of the cuboid pin 4 is not more than that of the bearing sleeve 1, and the cuboid pin is not exposed at two ends of the bearing sleeve 1 after being completely plugged; fig. 7 is a structural diagram of a screw 5, the screw 5 is a general standard component, one end of the screw 5 is in a conical surface structure, the other end of the screw is in an inner hexagonal structure, the length of the screw 5 is smaller than that of the threaded hole 7, and after the screw is completely screwed in, the screw 5 is not exposed.
The corrugated foil break angle 8 is arranged in the L-shaped groove 6 of the bearing sleeve 1, and the outer surface of the corrugated foil 2 is attached to the inner surface of the bearing sleeve 1. The folded angle 9 of the flat foil is arranged in the L-shaped groove 6 of the bearing sleeve 1, and the outer surface of the flat foil 3 is attached to the inner surface of the corrugated foil 1. Then, a cuboid pin 4 is plugged into the similar L-shaped groove 6, and the screw 5 is screwed into the threaded holes 7 at the two ends of the bearing sleeve 1. The overall assembled result is shown in figure 8. The cuboid pin 4 is extruded in the L-shaped groove 6 by utilizing the conical surface at one end of the screw 5, and the conical surface of the screw 5 is tightly attached to the cuboid pin 4, so that the purpose of firmly fixing the corrugated foil 2 and the flat foil 3 is achieved. Fig. 9(a) and 9(b) show enlarged views of the overall assembly effect.
Claims (3)
1. A cuboid 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 cuboid pin (4) and a screw (5);
the bearing sleeve (1) is a hollow cylindrical tube, an L-shaped groove (6) is formed in the direction from the inner wall of the bearing sleeve to the wall body, and the L-shaped groove (6) is embedded in the wall body of the bearing sleeve (1) and is parallel to the central axis of the bearing sleeve (1); the L-shaped groove (6) is composed of a transverse groove body and a longitudinal groove body which are communicated, wherein the longitudinal groove body is communicated with the inner wall surface of the bearing sleeve (1) and is in an open state and used for installing a corrugated foil break angle (8) and a flat foil break angle (9); the transverse groove body is positioned in the wall body of the bearing sleeve (1), is positioned on one side of the longitudinal groove body and is used for mounting a cuboid pin (4); the front end and the rear end of the L-shaped groove (6) penetrate through the front end face and the rear end face of the bearing sleeve (1) and are in an open state; inclined threaded holes (7) are respectively formed in the front end face and the rear end face of the bearing sleeve (1), the threaded holes (7) are located on one side of the transverse groove body, and the threaded holes (7) extend into the wall body of the bearing sleeve (1) to be communicated with the transverse groove body;
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 axis of the cylindrical, 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 with a smooth surface and an unclosed circumferential direction, and one end of the unclosed circumferential direction is folded outwards to form a flat foil break angle (9); the size of the flat foil (3) is smaller than that of the corrugated foil (2);
the method comprises the following steps that a corrugated foil (2) is arranged inside a bearing sleeve (1), a flat foil (3) is arranged inside the corrugated foil (2), the outer surface of the corrugated foil (2) is attached to the inner surface of the bearing sleeve (1), the outer surface of the flat foil (3) is attached to the inner surface of the corrugated foil (2), and a corrugated foil break angle (8) is attached to a flat foil break angle (9); corrugated foil break angle (8) and plain foil break angle (9) insert the vertical cell body in class L type groove (6) together, imbed cuboid pin (4) in the horizontal cell body in class L type groove (6), two screw (5) are twisted from screw hole (7) at both ends around bearing housing (1) respectively, utilize the fixed cuboid pin (4) of the conical surface of screw (5) front end, thereby cuboid pin (4) receive the extrusion and fix corrugated foil (2) and plain foil (3) in bearing housing (1).
2. A cuboid pin type aerodynamic hydrodynamic foil bearing foil fixation structure as claimed in claim 1 wherein the threaded hole (7) has an axis at 45 ° to the length direction of the L-like groove (6).
3. A cuboid pin type aerodynamic foil bearing foil fixation structure according to claim 1 or 2, wherein the cross sectional dimension of the cuboid pin (4) is smaller than the cross sectional dimension of the L-like groove (6) in clearance fit with the L-like groove (6), and the length of the cuboid pin (4) does not exceed the length of the bearing housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920675026.4U CN209990776U (en) | 2019-05-13 | 2019-05-13 | Cuboid pin type air dynamic pressure foil bearing foil fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920675026.4U CN209990776U (en) | 2019-05-13 | 2019-05-13 | Cuboid pin type air dynamic pressure foil bearing foil fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209990776U true CN209990776U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920675026.4U Active CN209990776U (en) | 2019-05-13 | 2019-05-13 | Cuboid pin type air dynamic pressure foil bearing foil fixing structure |
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| Country | Link |
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| CN (1) | CN209990776U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131301A (en) * | 2019-05-13 | 2019-08-16 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cuboid peg type |
| DE102021108887B3 (en) | 2021-04-09 | 2022-09-15 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with foil packs welded on the face side |
| DE102021108882B3 (en) | 2021-04-09 | 2022-09-15 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with stop edge in the outer ring for foil positioning |
| WO2022214133A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing having an overload protection and a shaft displacement limiting mechanism |
| WO2022214134A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Modular radial foil bearing with outer sleeve |
| WO2022214136A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing having a plurality of load-bearing surfaces and a defined angular contact zone |
| DE102021108886A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with spring-loaded foils |
| DE102021113397A1 (en) | 2021-05-25 | 2022-12-01 | Schaeffler Technologies AG & Co. KG | Modular radial foil bearing with elastic carrier foil |
-
2019
- 2019-05-13 CN CN201920675026.4U patent/CN209990776U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131301A (en) * | 2019-05-13 | 2019-08-16 | 大连理工大学 | A kind of air hydrodynamic foil bearing paillon fixed structure of cuboid peg type |
| DE102021108887B3 (en) | 2021-04-09 | 2022-09-15 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with foil packs welded on the face side |
| DE102021108882B3 (en) | 2021-04-09 | 2022-09-15 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with stop edge in the outer ring for foil positioning |
| WO2022214135A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing having an abutment edge in the outer ring to position the foil |
| WO2022214133A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing having an overload protection and a shaft displacement limiting mechanism |
| DE102021108888A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with overload protection and shaft displacement limitation |
| WO2022214134A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Modular radial foil bearing with outer sleeve |
| WO2022214136A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing having a plurality of load-bearing surfaces and a defined angular contact zone |
| DE102021108883A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Multifoil radial foil bearing, contact angle definition |
| DE102021108889A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Modular radial foil bearing with outer sleeve |
| DE102021108886A1 (en) | 2021-04-09 | 2022-10-13 | Schaeffler Technologies AG & Co. KG | Radial foil bearing with spring-loaded foils |
| DE102021113397A1 (en) | 2021-05-25 | 2022-12-01 | Schaeffler Technologies AG & Co. KG | Modular radial foil bearing with elastic carrier foil |
| WO2022247979A1 (en) | 2021-05-25 | 2022-12-01 | Schaeffler Technologies AG & Co. KG | Modular radial foil bearing having an elastic carrier foil |
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