CN114718735A - Multi-point flexible bearing supporting structure based on additive manufacturing - Google Patents
Multi-point flexible bearing supporting structure based on additive manufacturing Download PDFInfo
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- CN114718735A CN114718735A CN202210259092.XA CN202210259092A CN114718735A CN 114718735 A CN114718735 A CN 114718735A CN 202210259092 A CN202210259092 A CN 202210259092A CN 114718735 A CN114718735 A CN 114718735A
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- bearing
- additive manufacturing
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- structure based
- bearing support
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000000654 additive Substances 0.000 title claims abstract description 18
- 230000000996 additive effect Effects 0.000 title claims abstract description 18
- 230000008093 supporting effect Effects 0.000 title claims abstract description 16
- 238000013016 damping Methods 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A multipoint flexible bearing supporting structure based on additive manufacturing is applied to a bearing supporting structure of a rotor system in the industries of aircraft engines and large-scale wind power. It includes bearing support, a set of bearing and back bearing housing, bearing support fixed mounting is on the bearing housing of back, and the inside of bearing support is equipped with a set of installing support, and the bearing is installed on the installing support that corresponds, makes up between the lateral wall of a set of bearing and forms multiple spot bearing support space, the inside of back bearing housing is equipped with a set of spacing attenuator, and the one-to-one setting between spacing attenuator and the installing support. The supporting structure adopts a multi-point flexible bearing supporting mode, and reduces the bearing capacity requirement of each bearing, the installation precision requirement of the bearing and the rotating speed of the bearing on the basis of ensuring the supporting bearing capacity, so that the service life of the bearing is prolonged, and the processing and the assembly of the bearing are facilitated; the support structure can be used for applying a common low-speed bearing to the field with high rotating speed requirement.
Description
Technical Field
The invention is applied to a bearing support structure of a rotor system in the industries of aeroengines and large-scale wind power, and particularly relates to a multipoint flexible bearing support structure based on additive manufacturing.
Background
Bearings have been in use for thousands of years, and in the process of long development, bearing types have been diversified. In aeroengine and large-scale wind-powered electricity generation trade, antifriction bearing is by extensive application, but its bearing form is still comparatively single, and its support form all adopts single bearing to embrace axle construction generally, and this kind of structure can't satisfy different service environment, and to the installation accuracy requirement of bearing than higher.
Additive manufacturing is a technique for building three-dimensional objects by adding layered materials, such as, but not limited to, 3D printing, rapid prototyping, and the like. Additive manufacturing techniques are now increasingly being used in a wide variety of areas of the manufacturing industry.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a multipoint flexible bearing supporting structure based on additive manufacturing, which can reduce the DN value of a bearing and the installation precision of the bearing and is convenient for processing and assembling the bearing; and the bearing capacity of a single bearing can be reduced on the basis of ensuring the supporting effect, and the service life of the bearing is prolonged.
The invention provides the following technical scheme: the utility model provides a multiple spot flexible bearing structure based on vibration material disk, includes bearing support, a set of bearing and back bearing cover, bearing support fixed mounting is on the bearing cover of back, and the inside of bearing support is equipped with a set of installing support, and the bearing is installed on the installing support that corresponds, makes up between the lateral wall of a set of bearing and forms multiple spot bearing support space, the inside of back bearing cover is equipped with a set of spacing attenuator, and the one-to-one sets up between spacing attenuator and the installing support.
Further, the bearing support includes that the middle part is equipped with the bottom plate of through-hole and sets up the installed part on the bottom plate, and the installed part is the hollow cylinder structure, and a set of installing support equipartition sets up on the inside wall of installed part.
Further, the installing support comprises a main bearing arm support, a bearing installing seat arranged on the main bearing arm support and an auxiliary bearing arm support for supporting the bearing installing seat in an auxiliary mode, wherein the bearing installing seat comprises a connecting section arranged at one end of the main bearing arm support, a bearing installing section arranged on the connecting section and a damping matching section arranged at the end of the bearing installing section.
Furthermore, the outer side of the bearing mounting section is provided with a group of fins which are of flexible structures, and through holes are formed in the fins.
Furthermore, a slot is formed in the end portion of one side of the rear bearing outer sleeve, and an inserting protrusion matched with the slot is arranged on the outer side, located on the mounting piece, of the bottom plate.
Furthermore, a set of limiting dampers are uniformly distributed in the rear bearing outer sleeve and are arranged in one-to-one correspondence with the damping matching sections to form an elastic damping structure.
Furthermore, the main bearing arm support and the auxiliary bearing arm support are both of bent flexible structures, and the minimum clearance between the main bearing arm support and the upper end face of the bottom plate is 0.1-0.5 mm.
Further, the structure on the bottom plate, which is positioned on the inner side of the mounting piece, is a corrugated structure.
Further, the number of the bearings is at least three.
By adopting the technology, compared with the prior art, the invention has the following beneficial effects:
1) the supporting structure adopts a multi-point flexible bearing supporting mode, and on the basis of ensuring the supporting bearing capacity, the bearing capacity requirement of each bearing, the mounting precision requirement of the bearing and the rotating speed of the bearing when the bearing supports the rotor system are reduced, so that the service life of the bearing is prolonged, and the bearing is convenient to process and assemble; the support structure can be used for applying the common low-speed bearing to the field with high rotating speed requirement;
2) in the invention, the bearing support is provided with the corrugated structure, and gaps are reserved among the corrugated structure, the main bearing arm support and the auxiliary bearing arm support;
3) according to the invention, the limit damper and the damping matching section are combined to form an elastic damping structure, so that the bearing can be reset when the position of the bearing deviates due to the unbalance of a rotor system, and the requirement on the machining precision of the bearing supporting position is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic structural view of a bearing support of the present invention;
FIG. 4 is a schematic view of the internal structure of the bearing support of the present invention;
FIG. 5 is a schematic perspective view of a rear bearing housing of the present invention;
fig. 6 is a schematic construction view of the structure of the present invention.
In the figure: 1. a turbine rotor; 2. a turbine stator; 3. a bearing support; 301. a base plate; 302. a mounting member; 303. a main carrier arm support; 304. an auxiliary carrier arm support; 305. a connecting section; 306. a bearing mounting section; 307. a damping fit section; 308. inserting and connecting the bulges; 4. a bearing; 5. a rear bearing housing; 501. a slot; 6. a torsion transmission shaft; 7. and a limiting damper.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
Referring to fig. 1-6, a multi-point flexible bearing support structure based on additive manufacturing includes a bearing support 3, a bearing 4, and a rear bearing housing 5, which are all flexibly processed by additive manufacturing. A typical rotor system comprises a turbine rotor 1, a turbine stator 2 and a torque transmission shaft 6.
Specifically, one end of the bearing support 3 is fixed on the rear bearing outer sleeve 5 to form a whole, the bearing support is sleeved on the outer side of the torsion transmission shaft 6, and the bearing support 3 is limited through the turbine stator 2.
Specifically, the bearing support 3 includes a base plate 301 and a mounting member 302; a through hole is formed in the middle of the bottom plate 301, so that the torsion transmission shaft 6 can penetrate through the through hole conveniently; the mounting piece 302 is arranged on the bottom plate 301, and three sets of mounting brackets are arranged on the inner side wall of the mounting piece 302.
The mounting support comprises a main bearing arm support 303, an auxiliary bearing arm support 304 and a bearing mounting seat, the bearing mounting seat is arranged at one side end part of the main bearing arm support 303, and the other end of the main bearing arm support 303 is connected with the inner side wall of the mounting part 302; one end of the auxiliary outrigger 304 is connected to the inner sidewall of the mount 302 and the other end is connected to the bearing mount, forming an auxiliary support thereto.
The mounting seat comprises a connecting section 305, a bearing mounting section 306 and a damping matching section 307, wherein the connecting section 305 is connected with one side end of the main bearing arm support 303; the bearing mounting section 306 is arranged on the connecting section 305 and used for mounting the bearing 4, a group of flexible fins are arranged on the outer side of the bearing mounting section 306, through holes are formed in the fins, and the flexible fins can enable the outer ring of the bearing and the shaft diameter of the rotor to generate 0.2mm interference in the assembling process; the damping fitting section 307 is provided at an end of the bearing mounting section 306, and a tapered hole is provided at the middle thereof.
Specifically, the structure on the bottom plate 301, which is positioned on the inner side of the mounting part 302, is a corrugated structure, gaps are reserved between the main carrier arm support 303, the auxiliary carrier arm support 304 and the corrugated structure to play a role in drag reduction, and the minimum gap is 0.1-0.5 mm.
Specifically, a V-shaped slot 501 is arranged on the mounting side of the rear bearing outer sleeve 5 and the bearing support 3, and an insertion protrusion 308 matched with the slot 501 is arranged on the bottom plate 301 and on the outer side of the mounting piece 302; the bearing support 3 is inserted on the rear bearing outer sleeve 5 through a matching structure between the slot 501 and the insertion bulge 308;
the inside of rear bearing overcoat 5 is equipped with three spacing attenuator 7, and spacing attenuator 7 is provided with damping cooperation section 307 one-to-one, and the shape of the conical hole on damping cooperation section 307 cooperatees with the shape of the inboard toper structure of spacing attenuator 7, combines to form elastic damping structure.
The support structure of the invention adopts a multi-point flexible bearing support mode, and flexibly supports the torsion shaft 6 through the three bearings 4; in the supporting process, in order to prevent the position of the bearing 4 from generating large displacement caused by the unbalance of a rotor system, through the arranged elastic damping structure, when the axle bearing arm exceeds 0.5mm, the conical surface structure at the inner side of the damper is combined with the damping matching section 307 on the bearing support 3 to form a damping effect of repeated high-frequency collision, so that the bearing is forced to restore to the original position; when the main force bearing arm support 303 and the auxiliary force bearing arm support 304 are acted by the unbalanced force of the rotor, the main force bearing arm support and the auxiliary force bearing arm support can contact the corrugated structure on the bottom plate 301, force is diffused to the outer circle of the bearing support 3, and the function of drag reduction is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a multiple spot flexible bearing structure based on additive manufacturing which characterized in that: including bearing support (3), a set of bearing (4) and rear bearing overcoat (5), bearing support (3) fixed mounting is on rear bearing overcoat (5), and the inside of bearing support (3) is equipped with a set of installing support, and bearing (4) are installed on the installing support that corresponds, and the combination forms multiple spot bearing support space between the lateral wall of a set of bearing (4), the inside of rear bearing overcoat (5) is equipped with a set of spacing attenuator (7), and the one-to-one setting between spacing attenuator (7) and the installing support.
2. The multipoint flexible bearing support structure based on additive manufacturing according to claim 1, wherein the bearing support (3) comprises a bottom plate (301) with a through hole in the middle and a mounting part (302) arranged on the bottom plate (301), the mounting part (302) is a hollow cylindrical structure, and a group of mounting brackets are uniformly distributed on the inner side wall of the mounting part (302).
3. The multipoint flexible bearing support structure based on additive manufacturing according to claim 2, characterized in that the mounting bracket comprises a main outrigger (303), a bearing mount arranged on the main outrigger (303), and an auxiliary outrigger (304) for auxiliary supporting the bearing mount, and the bearing mount comprises a connecting section (305) arranged at one end of the main outrigger (303), a bearing mount section (306) arranged on the connecting section (305), and a damping fitting section (307) arranged at the end of the bearing mount section (306).
4. The multipoint flexible bearing support structure based on additive manufacturing of claim 3, characterized in that the bearing mounting section (306) is provided with a set of fins on the outside, the fins are flexible structures, and through holes are provided in the fins.
5. The multipoint flexible bearing support structure based on additive manufacturing according to claim 3, wherein one side end of the rear bearing outer sleeve (5) is provided with a slot (501), and the bottom plate (301) on the outer side of the mounting part (302) is provided with an insertion protrusion (308) matched with the slot (501).
6. The multipoint flexible bearing support structure based on additive manufacturing according to claim 5, characterized in that a set of said limiting dampers (7) are uniformly distributed inside the rear bearing housing (5), which are arranged in one-to-one correspondence with the damping mating sections (307) to form an elastic damping structure in combination.
7. The multipoint flexible bearing support structure based on additive manufacturing of claim 6, characterized in that the main outrigger (303) and the auxiliary outrigger (304) are both curved flexible structures, and the minimum clearance between the main outrigger (303), the auxiliary outrigger (304) and the upper end face of the bottom plate (301) is 0.1-0.5 mm.
8. A multi-point compliant bearing support structure based on additive manufacturing according to claim 7 characterised in that the structure on the base plate (301) inside the mount (302) is a corrugated structure.
9. A multipoint flexible bearing support structure based on additive manufacturing according to claim 1 or 7, characterised in that the number of bearings (4) is at least three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210259092.XA CN114718735A (en) | 2022-03-16 | 2022-03-16 | Multi-point flexible bearing supporting structure based on additive manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210259092.XA CN114718735A (en) | 2022-03-16 | 2022-03-16 | Multi-point flexible bearing supporting structure based on additive manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114718735A true CN114718735A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210259092.XA Pending CN114718735A (en) | 2022-03-16 | 2022-03-16 | Multi-point flexible bearing supporting structure based on additive manufacturing |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030048964A1 (en) * | 2001-09-13 | 2003-03-13 | Brackett Norman C. | Flexible bearing damping system, energy storage system using such a system, and a method related thereto |
| US20080152483A1 (en) * | 2006-12-22 | 2008-06-26 | Rolls-Royce North American Technologies, Inc. | Bearing support |
| CN107817107A (en) * | 2016-09-13 | 2018-03-20 | 中国航发商用航空发动机有限责任公司 | Elastic support structure and turbine engine rotor testing stand |
| CN209340198U (en) * | 2018-12-25 | 2019-09-03 | 珠海格力电器股份有限公司 | Bearing support assemblies and centrifugal compressor |
| CN113107969A (en) * | 2020-01-09 | 2021-07-13 | 珠海格力电器股份有限公司 | Rotor assembly and machining method thereof, compressor and air conditioning equipment |
| CN113530679A (en) * | 2021-08-05 | 2021-10-22 | 浙江意动科技股份有限公司 | Limiting structure of turbine shaft |
-
2022
- 2022-03-16 CN CN202210259092.XA patent/CN114718735A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030048964A1 (en) * | 2001-09-13 | 2003-03-13 | Brackett Norman C. | Flexible bearing damping system, energy storage system using such a system, and a method related thereto |
| US20080152483A1 (en) * | 2006-12-22 | 2008-06-26 | Rolls-Royce North American Technologies, Inc. | Bearing support |
| CN107817107A (en) * | 2016-09-13 | 2018-03-20 | 中国航发商用航空发动机有限责任公司 | Elastic support structure and turbine engine rotor testing stand |
| CN209340198U (en) * | 2018-12-25 | 2019-09-03 | 珠海格力电器股份有限公司 | Bearing support assemblies and centrifugal compressor |
| CN113107969A (en) * | 2020-01-09 | 2021-07-13 | 珠海格力电器股份有限公司 | Rotor assembly and machining method thereof, compressor and air conditioning equipment |
| CN113530679A (en) * | 2021-08-05 | 2021-10-22 | 浙江意动科技股份有限公司 | Limiting structure of turbine shaft |
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Effective date of abandoning: 20240126 |