CN117469002A - Elastic bearing pedestal supporting system structure - Google Patents
Elastic bearing pedestal supporting system structure Download PDFInfo
- Publication number
- CN117469002A CN117469002A CN202311320996.XA CN202311320996A CN117469002A CN 117469002 A CN117469002 A CN 117469002A CN 202311320996 A CN202311320996 A CN 202311320996A CN 117469002 A CN117469002 A CN 117469002A
- Authority
- CN
- China
- Prior art keywords
- ring
- bearing
- elastic
- outer ring
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title description 2
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
- F01D25/164—Flexible supports; Vibration damping means associated with the bearing
Abstract
The application belongs to the technical field of aeroengines, and particularly relates to an elastic bearing seat supporting system structure, wherein an elastic outer ring comprises a ring wall, a first mounting edge positioned at a fixed end of the ring wall and a limiting edge positioned radially inwards at a free end of the ring wall; the elastic support ring comprises a support ring wall and a second installation edge positioned at the fixed end of the support ring wall; the elastic support outer ring and the elastic support ring are fixedly arranged on the bearing frame through connecting bolts distributed circumferentially, and the inner surface of the free end of the elastic support outer ring is overlapped with the outer surface of the free end of the elastic support ring; the elastic support ring free end internal surface has spacing boss, spacing boss and spacing limit form the installation annular of installation bearing outer loop, and this application can adjust the rigidity of part on the engine power transmission route, and bilayer structure's annular structure effectively improves the complete machine vibration that the rotor rotated and arouses.
Description
Technical Field
The application belongs to the technical field of aeroengines, and particularly relates to an elastic bearing seat supporting system structure.
Background
As an important supporting structure of the turbine component, the bearing seat has the function of fixing the outer ring of the bearing, and the bearing is used for limiting and fixing the turbine rotor, so that the rotor can be accurately kept on the rotation center during working, and the rotor is prevented from contacting or colliding with a stator due to the eccentricity of the rotor.
The turbine rotor supporting structure is designed reasonably or not, so that the vibration performance and the test safety of the test run of the whole machine are obviously affected, and even the function realization of an engine and the service life of the whole machine are affected.
Currently, the bearing support system design used on turbines is mostly a rigid support structure, as shown in FIG. 1
Disclosure of Invention
To solve the above-mentioned problem, the present application provides an elastic bearing seat support system structure, including:
the spring support outer ring comprises a ring wall, a first mounting edge positioned at the fixed end of the ring wall and a limiting edge positioned radially inwards of the free end of the ring wall;
the elastic support ring comprises a support ring wall and a second installation edge positioned at the fixed end of the support ring wall;
the elastic support outer ring and the elastic support ring are fixedly arranged on the bearing frame through connecting bolts distributed circumferentially, and the inner surface of the free end of the elastic support outer ring is overlapped with the outer surface of the free end of the elastic support ring; the inner surface of the free end of the elastic support ring is provided with a limit boss, and the limit boss and the limit edge form a mounting ring groove for mounting the bearing outer ring.
Preferably, an elastic ring is arranged between the side wall of the outer ring of the bearing and the side wall of the limiting boss, and the elastic ring limits the axial displacement of the outer ring of the bearing.
Preferably, the two sides of the elastic ring are provided with bosses which are distributed circumferentially, and the bosses are respectively contacted with the side wall of the limiting boss and the side wall of the outer ring with the bearing.
Preferably, a gap is formed between the end face of the free end of the elastic support ring and the inner surface of the limit edge of the elastic support outer ring.
Preferably, there is a gap between the inner surface of the annular wall and the inner surface of the support annular wall.
Preferably, the support ring wall is provided with strip-shaped through holes distributed in the circumferential direction.
Preferably, the annular wall has circumferentially distributed through holes.
Preferably, the strip-shaped through hole is provided with a special-shaped hole for the oil nozzle to pass through.
Preferably, the limiting edge is provided with a chamfer for facilitating axial entry of the bearing into the annular groove.
The advantages of the present application include: the rigidity of the part on the force transmission path of the engine can be adjusted, and the annular structure of the double-layer structure effectively improves the vibration of the whole machine caused by rotor rotation. The design requirements of the engine with long service life and high reliability can be met, and the engineering application value is high. Meanwhile, the elastic ring is adopted to realize the limit of the outer ring of the bearing, so that the positioning function of the outer ring of the bearing under the full working condition of the engine can be effectively improved, and the engine can work more stably.
In addition, the supporting system structurally omits a bearing outer ring compression nut and a locking plate structure for preventing the nut from rotating, which are necessary to be selected by a conventional structure, so that the assembly and the use are simpler, and the working stability of the engine is improved.
Drawings
FIG. 1 is a block diagram of a spring bearing support system according to a preferred embodiment of the present application;
FIG. 2 is a schematic view of the structure of the elastic support ring according to a preferred embodiment of the present application;
FIG. 3 is a diagram of a spring outer ring structure model in accordance with a preferred embodiment of the present application;
FIG. 4 is a diagram of a structural model of an elastic ring according to a preferred embodiment of the present application;
figure 5 is a block diagram of a rigid support bearing of conventional construction.
Detailed Description
In order to make the technical solution of the present application and the advantages thereof more apparent, the technical solution of the present application will be more fully described in detail below with reference to the accompanying drawings, it being understood that the specific embodiments described herein are only some of the embodiments of the present application, which are for explanation of the present application, not for limitation of the present application. It should be noted that, for convenience of description, only the portion relevant to the present application is shown in the drawings, and other relevant portions may refer to a general design, and without conflict, the embodiments and technical features in the embodiments may be combined with each other to obtain new embodiments.
Furthermore, unless defined otherwise, technical or scientific terms used in the description of this application should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," "outer," and the like as used in this description are merely used to indicate relative directions or positional relationships, and do not imply that a device or element must have a particular orientation, be configured and operated in a particular orientation, and that the relative positional relationships may be changed when the absolute position of the object being described is changed, and thus should not be construed as limiting the present application. The terms "first," "second," "third," and the like, as used in the description herein, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance to the various components. The use of the terms "a," "an," or "the" and similar referents in the description of the invention are not to be construed as limited in number to the precise location of at least one. As used in this description, the terms "comprises," "comprising," or the like are intended to cover an element or article that appears before the term and that is listed after the term and its equivalents, without excluding other elements or articles.
Furthermore, unless specifically stated and limited otherwise, the terms "mounted," "connected," and the like in the description herein are to be construed broadly and refer to either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements, and the specific meaning of the two elements can be understood by a person skilled in the art according to specific situations.
The application provides an elastic bearing seat support system structure, as shown in fig. 1, including:
the spring support outer ring 1, as shown in fig. 3, comprises an annular wall 14, a first mounting edge 11 positioned at the fixed end of the annular wall 14 and a limiting edge 13 positioned radially inwards of the free end of the annular wall 14;
the elastic supporting ring 2, as shown in fig. 2, comprises a supporting annular wall 23 and a second mounting edge 21 positioned at the fixed end of the supporting annular wall 23;
the elastic support outer ring 1 and the elastic support ring 2 are fixedly arranged on the bearing frame 6 through connecting bolts 5 distributed circumferentially, and the inner surface of the free end of the elastic support outer ring 1 is overlapped with the outer surface of the free end of the elastic support ring 2; the inner surface of the free end of the elastic support ring 2 is provided with a limit boss, and the limit boss and the limit edge 13 form a mounting ring groove for mounting the outer ring of the bearing 4.
Preferably, an elastic ring 3 is arranged between the side wall of the outer ring of the bearing 4 and the side wall of the limiting boss, and the elastic ring 3 limits the axial displacement of the outer ring of the bearing 4, so that the bearing bears the radial force of the rotor.
Preferably, two side edges of the elastic ring 3 are provided with bosses which are circumferentially distributed, the bosses are respectively contacted with the side wall of the limiting boss and the side wall of the outer ring of the bearing 4, the bearing 4 adopts a roller bearing, the elastic ring 3 is axially arranged between the outer ring of the roller bearing and the elastic supporting ring 2, and on one hand, the limiting edge of the elastic supporting outer ring 1 is utilized to axially limit the outer ring 4 of the roller bearing; on the other hand, the elastic rings 3 are uniformly distributed and staggered boss elastic structures, and the elastic deformation quantity, the elastic support ring 2 and the thermal deformation quantity of the outer ring 4 of the roller bearing are calculated, so that the outer ring 4 of the roller bearing can ensure that an engine is axially tightly attached to the elastic support ring in the cold state assembly and full working condition test run state, the structural stability is improved, the selection of the thin wall thickness of the elastic ring is combined with numerical calculation selection, the stress level is controlled while the required axial compression force and compression deformation quantity are met, and the overlarge stress failure under the limit condition is avoided;
after the elastic support outer ring 1, the elastic support ring 2, the elastic ring 3, the bearing 4 and the connecting bolts 5 form a support system, the installation of the elastic support outer ring and the bearing frame 6 is realized through the connecting bolts. 0. The component functions are more clearly distinguished, so that the integration of multiple installation functions of a single part is avoided, and the processing quality of components and parts is improved.
Preferably, a gap is formed between the end surface of the free end of the elastic support ring 2 and the inner surface of the limit edge 13 of the elastic support outer ring 1.
Preferably, a gap is formed between the inner surface of the annular wall 14 and the inner surface of the supporting annular wall 23, that is, the elastic support outer ring 1 and the elastic support ring 2 are assembled into a component by adopting a spigot in a tight fit manner, and an assembly gap of 0.1-0.13 is reserved between the two parts, so that the elastic support ring 1 is limited to be structurally damaged due to the fact that the flexible deformation exceeds the strength reserve of the elastic support ring, as shown in fig. 4. The end face of the spring support outer ring is provided with a large chamfer, so that the bearing rolling bodies on the rotor can be conveniently arranged in the bearing outer ring.
Preferably, the supporting annular wall 23 is provided with strip-shaped through holes distributed circumferentially, and the strip-shaped through holes can improve the mechanical property of the elastic supporting ring and enable the elastic supporting ring to have certain elastic deformation.
Preferably, the annular wall 14 has circumferentially distributed through holes.
Preferably, the strip-shaped through holes are used for enabling the oil spray nozzle to pass through the special-shaped holes, so that the lubricating oil is supplied during the operation of the bearing, and the oil spray nozzle can simultaneously supply the lubricating oil to the bearing through the through holes in the annular wall 14.
Preferably, the limit edge 13 is provided with a chamfer for facilitating the axial entry of the bearing 4 into said annular groove.
The advantages of the present application include: the rigidity of the part on the force transmission path of the engine can be adjusted, and the annular structure of the double-layer structure effectively improves the vibration of the whole machine caused by rotor rotation. The design requirements of the engine with long service life and high reliability can be met, and the engineering application value is high. Meanwhile, the elastic ring is adopted to realize the limit of the outer ring of the bearing, so that the positioning function of the outer ring of the bearing under the full working condition of the engine can be effectively improved, and the engine can work more stably.
In addition, the supporting system structurally omits a bearing outer ring compression nut and a locking plate structure for preventing the nut from rotating, which are necessary to be selected by a conventional structure, so that the assembly and the use are simpler, and the working stability of the engine is improved.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. An elastomeric bearing housing support system structure comprising:
the elastic support outer ring (1) comprises a ring wall (14), a first mounting edge (11) positioned at the fixed end of the ring wall (14) and a limiting edge (13) positioned radially inwards of the free end of the ring wall (14);
the elastic support ring (2) comprises a support ring wall (23) and a second mounting edge (21) positioned at the fixed end of the support ring wall (23);
the elastic support outer ring (1) and the elastic support ring (2) are fixedly arranged on the bearing frame (6) through connecting bolts (5) distributed in the circumferential direction, and the inner surface of the free end of the elastic support outer ring (1) is overlapped with the outer surface of the free end of the elastic support ring (2); the inner surface of the free end of the elastic support ring (2) is provided with a limit boss, and the limit boss and the limit edge (13) form a mounting ring groove for mounting the outer ring of the bearing (4).
2. The elastic bearing seat support system structure according to claim 1, wherein an elastic ring (3) is arranged between the side wall of the outer ring of the bearing (4) and the side wall of the limiting boss, and the elastic ring (3) limits the axial displacement of the outer ring of the bearing (4).
3. A resilient bearing support system structure as claimed in claim 2, characterized in that the resilient ring (3) has circumferentially distributed bosses on both sides, which bosses are in contact with the side walls of the limit bosses and the side walls of the outer ring of the bearing (4), respectively.
4. A resilient bearing support system structure as claimed in claim 1, characterized in that a gap is provided between the end face of the free end of the resilient support ring (2) and the inner surface of the limit edge (13) of the sprung outer ring (1).
5. A resilient housing support system structure according to claim 1, wherein there is a gap between the inner surface of the annular wall (14) and the inner surface of the support annular wall (23).
6. A resilient bearing support system structure according to claim 1, characterized in that the support ring wall (23) has circumferentially distributed strip-shaped through holes.
7. A resilient bearing support system structure according to claim 1, characterized in that the annular wall (14) has circumferentially distributed through holes.
8. The elastomeric bearing housing support system of claim 2 wherein said bar-shaped through holes have shaped holes therein for the fuel injector to pass through.
9. A resilient chock support system structure according to claim 1, in which the limit edge (13) has a chamfer thereon for facilitating axial entry of the bearing (4) into the ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311320996.XA CN117469002A (en) | 2023-10-12 | 2023-10-12 | Elastic bearing pedestal supporting system structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311320996.XA CN117469002A (en) | 2023-10-12 | 2023-10-12 | Elastic bearing pedestal supporting system structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117469002A true CN117469002A (en) | 2024-01-30 |
Family
ID=89624728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311320996.XA Pending CN117469002A (en) | 2023-10-12 | 2023-10-12 | Elastic bearing pedestal supporting system structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117469002A (en) |
-
2023
- 2023-10-12 CN CN202311320996.XA patent/CN117469002A/en active Pending
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