CN115539501A - Elastic lamination assembly, foil dynamic pressure thrust bearing and rotating mechanical shaft system - Google Patents
Elastic lamination assembly, foil dynamic pressure thrust bearing and rotating mechanical shaft system Download PDFInfo
- Publication number
- CN115539501A CN115539501A CN202211513068.0A CN202211513068A CN115539501A CN 115539501 A CN115539501 A CN 115539501A CN 202211513068 A CN202211513068 A CN 202211513068A CN 115539501 A CN115539501 A CN 115539501A
- Authority
- CN
- China
- Prior art keywords
- elastic
- base
- foil
- along
- elastic sheet
- 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
- 239000011888 foil Substances 0.000 title claims abstract description 75
- 238000003475 lamination Methods 0.000 title claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 238000005530 etching Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000035882 stress Effects 0.000 description 7
- 230000032683 aging Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/042—Sliding-contact bearings for exclusively rotary movement for axial load only with flexible leaves to create hydrodynamic wedge, e.g. axial foil bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Support Of The Bearing (AREA)
Abstract
The invention provides an elastic laminated assembly, a foil dynamic pressure thrust bearing and a rotating mechanical shaft system, and relates to the field of transmission structures. The elastic lamination assembly comprises a base and a plurality of elastic sheets; the base is arranged annularly, the elastic sheet is connected with the base, the elastic sheet is wound annularly along the circumferential direction of the base, the direction from the inner surface of the elastic sheet to the outer surface vertically is the thickness direction, and the elastic sheets are arranged along the radial direction of the base; the elastic sheet is provided with a plurality of elastic parts which can deform along the axial direction of the base, and the elastic parts are arranged along the circumferential direction of the base. The deformation direction of the elastic part is perpendicular to the thickness direction of the elastic sheet, the foil can be directly etched or subjected to linear cutting processing to obtain a plurality of foils with elastic part structures, and the foils are wound along the circumferential direction of the base to form the elastic sheet. The foil does not have residual stress, and the mechanical strength and the stress release are not required to be improved through a subsequent heat treatment process, so that the forming process can be effectively simplified, and the processing period is shortened.
Description
Technical Field
The invention relates to the field of transmission structures, in particular to an elastic lamination assembly, a foil dynamic pressure thrust bearing and a rotating mechanical shaft system.
Background
The foil dynamic pressure air bearing is a key supporting component of a rotating mechanical shafting, and is particularly suitable for high rotating speed, light load, high temperature, low temperature and oil-free working conditions. According to different force bearing directions, foil dynamical pressure air bearings can be divided into axial bearings and radial bearings, wherein the axial bearings are also called foil dynamical pressure thrust bearings and are matched with a thrust disc on a rotor for use.
The foil dynamic pressure thrust bearing is generally composed of a top foil and a bump foil, and is a bearing using gas as a lubricating medium. A wedge-shaped area is formed between the top foil and the thrust disc, and when the thrust disc runs at high speed, a high-pressure area is generated in the wedge-shaped area by using the dynamic pressure effect of gas, so that the thrust disc is supported and gas lubrication is realized.
However, when processing the above corrugated foil, it is necessary to first press-mold the entire foil in a solid solution state, and then perform aging strengthening heat treatment to improve the material strength and reduce the springback of the foil, thereby ensuring the dimensional stability. The forming process of the wave foil is complex, and the processing period is long.
Disclosure of Invention
In order to solve the problems of the prior art, it is an object of the present invention to provide an elastic lamination assembly.
The invention provides the following technical scheme:
an elastic lamination assembly comprises a base and a plurality of elastic sheets;
the base is arranged annularly, the elastic sheet is connected with the base, the elastic sheet is wound annularly along the circumferential direction of the base, the direction from the inner surface of the elastic sheet to the outer surface vertically is the thickness direction of the elastic sheet, the elastic sheet is formed by etching or cutting along the thickness direction, and the elastic sheets are arranged along the radial direction of the base;
the elastic sheet is provided with a plurality of elastic parts, the elastic parts can deform along the axial direction of the base, and the elastic parts are arranged along the circumferential direction of the base.
As a further optional solution to the elastic lamination assembly, the elastic lamination further includes a bottom beam, the bottom beam is disposed along a circumferential direction of the base and connected to the base, and the plurality of elastic portions are disposed on the bottom beam.
As a further optional solution to the elastic lamination assembly, the elastic lamination further includes a plurality of limiting portions, and the limiting portions are disposed corresponding to the elastic portions;
the limiting part is provided with a large end and a small end, and the large end of the limiting part is embedded in the bottom beam and is in clearance fit with the bottom beam;
the elastic part is fixedly connected with the bottom beam along one end of the base in the circumferential direction, and the other end of the elastic part is fixedly connected with the small end of the corresponding limiting part.
As a further optional solution to the elastic lamination assembly, a first clamping groove is formed on the base, the first clamping groove is arranged along a radial direction of the base, and the bottom beam has a first clamping portion, and the first clamping portion is clamped with the first clamping groove.
As a further alternative to the elastic lamination assembly, the bottom beam has a second clamping portion, and is provided with a second clamping groove;
the second clamping part is located at one end of the bottom beam along the circumferential direction of the base, the second clamping groove is formed in the other end of the bottom beam and is arranged along the radial direction of the base, and the second clamping part is clamped with the second clamping groove.
As a further alternative to the elastic lamination assembly, the first locking grooves are provided with at least two, the at least two first locking grooves are arranged along the circumferential direction of the base, and the first locking parts of at least two of the bottom beams are locked with different first locking grooves.
As a further alternative to the elastic lamination assembly, the elastic lamination assembly further includes a limiting inner ring embedded in the inner side wall of the base and abutting against the bottom beam.
As a further alternative to the elastic lamination assembly, the elastic portion includes several alternately connected arch waves and arch feet, and wave heights of the arch waves decrease along a circumferential direction of the base.
It is another object of the present invention to provide a foil dynamic pressure thrust bearing.
The invention provides the following technical scheme:
a foil dynamic pressure thrust bearing comprises a top foil, a mounting seat and the elastic lamination assembly, wherein the top foil and the base are connected with the mounting seat, and the top foil is abutted to the elastic part.
It is a further object of the present invention to provide a rotating mechanical shaft system.
The invention provides the following technical scheme:
a rotating mechanical shaft system comprises the foil dynamic pressure thrust bearing.
The embodiment of the invention has the following beneficial effects:
the elastic sheets are arranged along the radial direction of the base and are connected into a whole through the base, so that the conventional bump foil structure is replaced. Because the deformation direction of the elastic part is perpendicular to the thickness direction of the elastic sheet, when the elastic laminated sheet assembly is processed, the thermal foil subjected to the aging strengthening treatment can be directly etched or subjected to linear cutting processing to obtain a plurality of foils with the elastic part structure, and then the foils are wound along the circumferential direction of the base to form the elastic sheet. The foil does not have residual stress in the processing process, and the mechanical strength and the stress release are not required to be improved through a subsequent heat treatment process, so that the forming process can be effectively simplified, and the processing period is shortened.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view showing the overall structure of an elastic lamination assembly provided by an embodiment of the invention;
FIG. 2 illustrates an exploded view of an elastic laminate assembly provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating an elastic sheet in an elastic laminate assembly according to an embodiment of the present invention;
FIG. 4 is a schematic illustration showing a portion of an unfolded elastic sheet of an elastic laminate assembly according to an embodiment of the present invention;
figure 5 shows a partial structural view of a bottom beam of an elastic lamination assembly according to an embodiment of the invention;
FIG. 6 is a schematic view illustrating the fit relationship between the elastic sheet and the base in an elastic laminate assembly according to an embodiment of the present invention;
FIG. 7 is a layout diagram illustrating batch processing of elastic sheets;
fig. 8 shows an exploded view of a foil hydrodynamic thrust bearing according to an embodiment of the present invention.
Description of the main element symbols:
10-an elastic lamination assembly; 20-top foil; 30-a mounting seat;
100-a base; 110-a first card slot; 200-an elastic sheet; 210-an elastic portion; 211-bow wave; 212-spring back; 220-bottom beam; 221-a first catch; 222-a second catch; 223-a second card slot; 230-a connecting portion; 240-a limiting part; 241-big end; 242-small end; 300-limit inner ring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Examples
Referring to fig. 1 and 2, the present embodiment provides an elastic lamination assembly 10 applied to a foil dynamic pressure thrust bearing to replace the conventional bump foil structure. The elastic lamination assembly 10 is composed of a base 100, an elastic sheet 200 and a limiting inner ring 300, wherein the base 100 is annular, and the elastic sheet 200 and the limiting inner ring 300 are both connected with the base 100.
Specifically, the elastic sheet 200 is wound in a ring shape along the circumferential direction of the chassis 100, and the elastic sheet 200 has a sheet structure, and the direction from the inner surface of the elastic sheet 200 to the outer surface thereof is the thickness direction of the elastic sheet 200 and is also the radial direction of the chassis 100.
In addition, the elastic sheet 200 is provided in a plurality, and a plurality of elastic sheets 200 are arranged in a radial direction of the chassis 100. In any two adjacent elastic pieces 200, the inner diameter of the elastic piece 200 at the outer periphery is equal to the outer diameter of the elastic piece 200 at the inner periphery.
Referring to fig. 3 and 4, each elastic sheet 200 has a plurality of elastic portions 210, the elastic portions 210 are deformable along the axial direction of the base 100 (see fig. 2), and the plurality of elastic portions 210 are arranged along the circumferential direction of the base 100.
Since the deformation direction of the elastic portion 210 is perpendicular to the thickness direction of the elastic sheet 200, during processing, the thermal foil subjected to the aging strengthening treatment can be directly subjected to etching or wire cutting processing to obtain a foil having the structure of the elastic portion 210, and then the foil is wound along the circumferential direction of the base 100 to finally form the elastic sheet 200. The thickness direction of the elastic sheet 200 is the thickness direction of the foil, and is also the thickness direction of the hot foil.
In the processing process, the residual stress in the foil is little or no, and the subsequent heat treatment process is not needed to improve the mechanical strength and release the stress.
In contrast, the conventional bump foil deforms along the thickness direction thereof, the arch structure cannot be formed by etching or wire cutting, and the arch structure can be obtained only by a process such as stamping or forging by means of an expensive stamping die. After the elastic structure is formed, the wave foil has more stress inside, the conditions of size springback and the like are easy to occur, and further aging strengthening heat treatment is needed, so that the forming process is complex and the processing period is long.
Specifically, the number of the elastic portions 210 on each elastic piece 200 is the same, and the elastic portions 210 on two adjacent elastic pieces 200 are respectively aligned.
In some embodiments, the spring 210 is comprised of a plurality of alternating connected arch waves 211 and arches 212. Wherein, the wave height of the arch wave 211 decreases progressively along the circumferential direction of the base 100.
In other embodiments, the arch wave 211 constituting the elastic portion 210 may be replaced by other structures that can be deformed in the axial direction of the base 100, such as a bar-shaped structure disposed obliquely with respect to the arch 212. At this point, the arch 212 is of a continuous construction, with each bar structure being simultaneously connected to the arch 212.
In some embodiments, the bow waves 211 of two adjacent springs 210 are aligned to form a planar bow wave 211 structure, consistent with conventional wave foils. The structure can provide uniform and fine support for the top foil 20 of the foil dynamic pressure bearing, and prevent the top foil 20 from locally and obviously sinking due to insufficient support position.
In other embodiments, the arch waves 211 of two adjacent springs 210 may be offset to provide a finer support for the top foil 20.
In some embodiments, the elastic sheet 200 includes a bottom beam 220, a connecting portion 230, and a stopper portion 240 in addition to the elastic portion 210.
Wherein, the bottom beam 220 is arranged along the circumference of the base 100 and connected with the base 100, and the plurality of elastic parts 210 are all arranged on the bottom beam 220.
The number of the connecting parts 230 and the number of the limiting parts 240 are the same as the number of the elastic parts 210, and each elastic part 210 is correspondingly provided with one connecting part 230 and one limiting part 240.
One end of the elastic part 210 along the circumferential direction of the base 100 is a fixed end, and is fixedly connected with the bottom beam 220 through a connecting part 230. The other end of the elastic portion 210 is a free end, and is engaged with the bottom beam 220 through the limiting portion 240, and can freely move in a limited range relative to the bottom beam 220.
The fixed end of the elastic part 210 is an arch wave 211, and the connecting part 230 is tangent to the arch wave 211 and embedded in the surface of the bottom beam 220. One end of the connecting portion 230, which is far away from the elastic portion 210, is fixedly connected to the bottom beam 220, and two sides of the connecting portion 230 are in clearance fit with the bottom beam 220.
The stopper 240 has a large end 241 and a small end 242. The large end 241 of the position-limiting portion 240 is embedded in the bottom beam 220 and is in clearance fit with the bottom beam 220. The small end 242 of the position-limiting part 240 penetrates the surface of the bottom beam 220 and is fixedly connected with the free end of the elastic part 210.
On one hand, the large end 241 of the limiting portion 240 cannot be disengaged from the bottom beam 220, so that the elastic portion 210 is limited, the elastic portion 210 is prevented from disengaging and deviating from the bottom beam 220 when loaded, and the elastic portion 210 is prevented from toppling, skewing and twisting.
On the other hand, the stopper 240 is freely movable within a limited range, and the elastic portion 210 is ensured to have a certain deformation capability when loaded.
Since the elastic piece 200 is formed by etching or wire cutting the foil, the bottom beam 220 and the connecting portion 230, the connecting portion 230 and the elastic portion 210, and the elastic portion 210 and the limiting portion 240 are integrally formed.
In other embodiments, the bottom beam 220 may be divided into several segments, one elastic portion 210 is disposed on each bottom beam 220, and each bottom beam 220 is connected to the base 100.
In still other embodiments, each of the elastic portions 210 of the elastic sheet 200 may be independently connected to the chassis 100.
Referring to fig. 5 and 6, in some embodiments, the base 100 is provided with a first card slot 110. The first card slot 110 is disposed along a radial direction of the base 100, and a width of a notch of the first card slot 110 is smaller than a maximum width of the first card slot 110.
Accordingly, the bottom beam 220 has a first retaining portion 221 on a side facing the base 100, and the first retaining portion 221 is engaged with the first slot 110.
During assembly, a worker firstly clamps the foil obtained by etching or wire cutting with the base 100, then winds the foil along the circumferential direction of the base 100, and fixedly connects two ends of the foil, thereby forming the elastic sheet 200.
Optionally, the first card slot 110 is dovetail or arcuate in cross-section.
Further, in some embodiments, the first card slot 110 is provided with at least two. The first engaging grooves 110 are arranged along the circumferential direction of the base 100, and the first engaging portions 221 of the at least two bottom beams 220 are engaged with different first engaging grooves 110.
The clamping of the first clamping parts 221 of the at least two bottom beams 220 with different first clamping grooves 110 means that the first clamping part 221 of one bottom beam 220 is clamped with one of the first clamping grooves 110, and the first clamping part 221 of the other bottom beam 220 is clamped with the other first clamping groove 110.
The single elastic piece 200 can slide along the corresponding first slot 110, when the plurality of elastic pieces 200 are sleeved, the first clamping parts 221 of the at least two bottom beams 220 are clamped with the different first slots 110, so that the sliding directions of the at least two elastic pieces 200 are different, and the elastic pieces 200 can be mutually limited and locked.
Optionally, the number of the first card slots 110 is six, and the six first card slots 110 are uniformly distributed along the circumferential direction of the base 100.
Further, the bottom beam 220 has a second catching portion 222 and is provided with a second catching groove 223.
The second engaging portion 222 is located at one end of the bottom beam 220 along the circumferential direction of the base 100, and the second engaging groove 223 is located at the other end of the bottom beam 220. The second engaging groove 223 is disposed along the radial direction of the base 100, and the second engaging portion 222 is engaged with the second engaging groove 223.
After the worker winds the foil along the circumferential direction of the base 100, the second retaining portion 222 is engaged into the second engaging groove 223, so as to form and retain the annular elastic sheet 200.
Referring to fig. 1 and fig. 2 again, specifically, the limiting inner ring 300 is disposed coaxially with the base 100 and embedded on the inner sidewall of the base 100. The inner limiting ring 300 protrudes from the surface of the base 100 along one axial end of the base 100, and abuts against the bottom beam 220 of the elastic sheet 200 at the inner periphery, so as to prevent the elastic sheet 200 from falling out of the base 100.
The top of the inner limiting ring 300 is slightly lower than the top of the bottom beam 220, so as to avoid forming a rigid support for the top foil 20 of the foil dynamic pressure thrust bearing when the deformation of the elastic part 210 is too large.
Referring to fig. 7, in summary, the elastic laminate assembly 10 is manufactured by using a hot foil material subjected to an aging treatment as a raw material. A plurality of foils having the elastic portion 210 structure are obtained in batch by etching or wire cutting, and then the foils are snapped to the base 100. The respective foils are sequentially wound from the inside to the outside in the circumferential direction of the chassis 100 to form the elastic pieces 200, and the respective elastic pieces 200 are stacked in the radial direction of the chassis 100. Finally, a planar elastic supporting structure is formed to replace the conventional bump foil structure.
In the processing process, the residual stress in the foil is less or does not exist, and the subsequent heat treatment process is not needed to improve the mechanical strength and release the stress, so that the forming process can be effectively simplified, the processing period is shortened, and the cost is reduced.
Each elastic sheet 200 is formed by winding along the circumferential direction of the base 100, and is stacked along the radial direction of the base 100, so that a continuous and uniform supporting effect can be provided for the top foil 20, and the bearing capacity of the foil dynamic pressure thrust bearing is improved. In addition, the elastic piece 200 has various structures, can be processed in batches, and has simple processing and assembly processes.
Referring to fig. 8, the present embodiment further provides a foil dynamic pressure thrust bearing, which includes a top foil 20, a mounting seat 30, and the above-mentioned elastic lamination assembly 10.
Specifically, the mounting seat 30 has a ring-shaped structure, and the inner diameter of the mounting seat 30 is equal to or slightly larger than the outer diameter of the base 100. The base 100 is embedded in the mounting seat 30 and is welded and fixed or in interference fit with the mounting seat 30. The top foil 20 is overlaid on the elastic lamination assembly 10, abuts against the elastic portion 210, and is bolted and fixed to the mounting seat 30.
The embodiment also provides a rotating mechanical shaft system which comprises a rotor, a thrust disc and the foil dynamic pressure thrust bearing.
Specifically, the rotor passes through a foil dynamic pressure thrust bearing. The thrust disk is fixed in a nested manner on the rotor, opposite the side of the top foil 20 facing away from the elastic lamination assembly 10.
The wave height of the arch wave 211 of the elastic part 210 decreases gradually along the circumferential direction of the base 100, and the top foil 20 in contact with the elastic part 210 is inclined accordingly, so that a wedge-shaped area is formed between the top foil and the thrust disc.
In all examples shown and described herein, any particular value should be construed as exemplary only and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. An elastic lamination assembly is characterized by comprising a base and a plurality of elastic laminations;
the base is arranged annularly, the elastic sheet is connected with the base, the elastic sheet is wound annularly along the circumferential direction of the base, the direction from the inner surface of the elastic sheet to the outer surface vertically is the thickness direction of the elastic sheet, the elastic sheet is formed by etching or cutting along the thickness direction, and the elastic sheets are arranged along the radial direction of the base;
the elastic sheet is provided with a plurality of elastic parts, the elastic parts can deform along the axial direction of the base, and the elastic parts are arranged along the circumferential direction of the base.
2. The flexible stack assembly of claim 1 wherein the flexible sheet further comprises a base beam disposed circumferentially about and attached to the base, the plurality of flexible segments being disposed on the base beam.
3. The elastic lamination assembly of claim 2 wherein the elastic sheet further comprises a plurality of limiting portions disposed in correspondence with the elastic portions;
the limiting part is provided with a large end and a small end, and the large end of the limiting part is embedded in the bottom beam and is in clearance fit with the bottom beam;
the elastic part is fixedly connected with the bottom beam along one end of the base in the circumferential direction, and the other end of the elastic part is fixedly connected with the small end of the corresponding limiting part.
4. The elastic lamination assembly according to claim 2, wherein the base is provided with a first locking groove, the first locking groove is arranged along a radial direction of the base, and the bottom beam is provided with a first locking portion, and the first locking portion is engaged with the first locking groove.
5. The elastic lamination assembly according to claim 4, wherein the bottom beam has a second catch and is provided with a second catch groove;
the second clamping part is located at one end of the bottom beam along the circumferential direction of the base, the second clamping groove is formed in the other end of the bottom beam and is arranged along the radial direction of the base, and the second clamping part is clamped with the second clamping groove.
6. The elastic lamination assembly according to claim 4, wherein the first locking slots are provided in at least two, the at least two first locking slots are arranged along the circumference of the base, and the first locking portions of at least two of the bottom beams are engaged with different first locking slots.
7. The resilient lamination assembly of claim 4, further comprising a retainer ring embedded in an inner sidewall of the base and abutting the floor beam.
8. The elastic lamination assembly according to any one of claims 1 to 7, wherein the elastic portion comprises a plurality of alternating arched waves and arches, the wave height of the arched waves decreasing in the circumferential direction of the base.
9. A foil dynamic pressure thrust bearing comprising a top foil, a mounting seat and an elastic laminate assembly as claimed in any one of claims 1 to 8, the top foil and the base being connected to the mounting seat, the top foil abutting the elastic portion.
10. A rotating mechanical shaft assembly comprising the foil dynamic pressure thrust bearing of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211513068.0A CN115539501A (en) | 2022-11-30 | 2022-11-30 | Elastic lamination assembly, foil dynamic pressure thrust bearing and rotating mechanical shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211513068.0A CN115539501A (en) | 2022-11-30 | 2022-11-30 | Elastic lamination assembly, foil dynamic pressure thrust bearing and rotating mechanical shaft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115539501A true CN115539501A (en) | 2022-12-30 |
Family
ID=84722549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211513068.0A Pending CN115539501A (en) | 2022-11-30 | 2022-11-30 | Elastic lamination assembly, foil dynamic pressure thrust bearing and rotating mechanical shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115539501A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989061A (en) * | 2023-09-25 | 2023-11-03 | 亿昇(天津)科技有限公司 | Foil dynamic pressure thrust bearing and rotary machine |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291745A (en) * | 2013-05-29 | 2013-09-11 | 南京航空航天大学 | Separated-type wave foil dynamic pressure gas thrust bearing |
| US20180172067A1 (en) * | 2016-12-15 | 2018-06-21 | Hyundai Motor Company | Air foil thrust bearing |
| CN108730330A (en) * | 2018-08-09 | 2018-11-02 | 北京瑞深航空科技有限公司 | The method of adjustment of compliant foil air bearing and its rigidity and damping |
| CN108730331A (en) * | 2018-08-09 | 2018-11-02 | 北京瑞深航空科技有限公司 | The method of adjustment of axial hydrodynamic air bearing and its rigidity and damping |
| CN110486372A (en) * | 2019-08-13 | 2019-11-22 | 珠海格力电器股份有限公司 | A kind of hybrid aero dynamic bearing |
| WO2021001016A1 (en) * | 2019-07-01 | 2021-01-07 | Bladon Jets Holdings Limited | Compliant foil thrust bearing |
| CN214247995U (en) * | 2021-01-14 | 2021-09-21 | 上海优社动力科技有限公司 | Net-shaped thrust gas foil bearing |
| CN215908242U (en) * | 2021-08-12 | 2022-02-25 | 芜湖佰登瑞动力科技有限公司 | Air-floating thrust bearing |
| CN215928134U (en) * | 2021-10-21 | 2022-03-01 | 大连海事大学 | Split air foil thrust bearing |
| CN114458689A (en) * | 2022-03-09 | 2022-05-10 | 东莞青锐科技有限公司 | Thrust foil gas bearing |
| WO2022136511A1 (en) * | 2020-12-22 | 2022-06-30 | Robert Bosch Gmbh | Bump foil used in thrust bearings and corresponding thrust bearing and device |
| KR20220094815A (en) * | 2020-12-29 | 2022-07-06 | 현대위아 주식회사 | Gas foil thrust bearing |
| CN114941650A (en) * | 2022-05-13 | 2022-08-26 | 烟台东德实业有限公司 | Air bearing without bottom plate |
-
2022
- 2022-11-30 CN CN202211513068.0A patent/CN115539501A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291745A (en) * | 2013-05-29 | 2013-09-11 | 南京航空航天大学 | Separated-type wave foil dynamic pressure gas thrust bearing |
| US20180172067A1 (en) * | 2016-12-15 | 2018-06-21 | Hyundai Motor Company | Air foil thrust bearing |
| CN108730330A (en) * | 2018-08-09 | 2018-11-02 | 北京瑞深航空科技有限公司 | The method of adjustment of compliant foil air bearing and its rigidity and damping |
| CN108730331A (en) * | 2018-08-09 | 2018-11-02 | 北京瑞深航空科技有限公司 | The method of adjustment of axial hydrodynamic air bearing and its rigidity and damping |
| WO2021001016A1 (en) * | 2019-07-01 | 2021-01-07 | Bladon Jets Holdings Limited | Compliant foil thrust bearing |
| CN110486372A (en) * | 2019-08-13 | 2019-11-22 | 珠海格力电器股份有限公司 | A kind of hybrid aero dynamic bearing |
| WO2022136511A1 (en) * | 2020-12-22 | 2022-06-30 | Robert Bosch Gmbh | Bump foil used in thrust bearings and corresponding thrust bearing and device |
| KR20220094815A (en) * | 2020-12-29 | 2022-07-06 | 현대위아 주식회사 | Gas foil thrust bearing |
| CN214247995U (en) * | 2021-01-14 | 2021-09-21 | 上海优社动力科技有限公司 | Net-shaped thrust gas foil bearing |
| CN215908242U (en) * | 2021-08-12 | 2022-02-25 | 芜湖佰登瑞动力科技有限公司 | Air-floating thrust bearing |
| CN215928134U (en) * | 2021-10-21 | 2022-03-01 | 大连海事大学 | Split air foil thrust bearing |
| CN114458689A (en) * | 2022-03-09 | 2022-05-10 | 东莞青锐科技有限公司 | Thrust foil gas bearing |
| CN114941650A (en) * | 2022-05-13 | 2022-08-26 | 烟台东德实业有限公司 | Air bearing without bottom plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989061A (en) * | 2023-09-25 | 2023-11-03 | 亿昇(天津)科技有限公司 | Foil dynamic pressure thrust bearing and rotary machine |
| CN116989061B (en) * | 2023-09-25 | 2024-01-09 | 亿昇(天津)科技有限公司 | Foil dynamic pressure thrust bearing and rotary machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113969938B (en) | Bump foil assembly, foil dynamic pressure air bearing and shaft system | |
| US11946510B2 (en) | Shaft assembly | |
| KR101293197B1 (en) | Foil bearing | |
| EP1740839B1 (en) | Radial foil bearing | |
| CN115539501A (en) | Elastic lamination assembly, foil dynamic pressure thrust bearing and rotating mechanical shaft system | |
| JPH0355693B2 (en) | ||
| EP3299644B1 (en) | Mixed-type dynamic pressure gas thrust bearing | |
| JP2018141559A (en) | Tolerance ring with component engagement structures | |
| US7963702B2 (en) | Roller bearing | |
| CN106194987B (en) | Thrust bearing assembl | |
| CN115076219B (en) | Laminated type foil dynamic pressure bearing and shaft system | |
| WO2001057408A1 (en) | Tilting pad bearing arrangement | |
| JPS6125930B2 (en) | ||
| CN115628264B (en) | Foil type dynamic pressure air bearing and rotating mechanical shaft system | |
| EP2282072A1 (en) | Inner and outer ring, and ball bearing made of sheet metal | |
| US3430942A (en) | Belleville spring assembly with elastic guides | |
| CN114857164A (en) | Foil dynamic pressure bearing and shafting | |
| CN116989061B (en) | Foil dynamic pressure thrust bearing and rotary machine | |
| CN116989060B (en) | Thrust bearing and shafting | |
| GB2180012A (en) | Hydrodynamic fluid film bearing | |
| JP2006097809A (en) | Manufacturing method of high-precision ring | |
| JP7319520B2 (en) | bearing structure | |
| CN210003664U (en) | multistage elastic support assembly and dynamic pressure gas radial bearing | |
| JPH0520606B2 (en) | ||
| EP3914831B1 (en) | Stacked thrust tapered dissimilar series roller bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221230 |