CN107882870B - Bionic spiral groove thrust bearing - Google Patents
Bionic spiral groove thrust bearing Download PDFInfo
- Publication number
- CN107882870B CN107882870B CN201711230124.9A CN201711230124A CN107882870B CN 107882870 B CN107882870 B CN 107882870B CN 201711230124 A CN201711230124 A CN 201711230124A CN 107882870 B CN107882870 B CN 107882870B
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- bearing
- spiral groove
- rotor
- face
- spiral
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 9
- 235000020238 sunflower seed Nutrition 0.000 claims abstract description 29
- 239000000314 lubricant Substances 0.000 claims abstract description 25
- 241000208818 Helianthus Species 0.000 claims description 4
- 235000003222 Helianthus annuus Nutrition 0.000 claims description 4
- 230000003592 biomimetic effect Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 26
- 238000005461 lubrication Methods 0.000 abstract description 10
- 230000003068 static effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
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- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
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- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a bionic spiral groove thrust bearing. The bearing end face is provided with a spiral groove, a platform area and a dam area, the dam area is positioned at the inner edge of the bearing end face, the bearing end face at the periphery of the dam area is provided with the spiral groove, and the surface of the bearing end face at the periphery of the dam area, which is not provided with the spiral groove, forms the platform area; the rotor rotates relative to the bearing, and lubricant is filled between the rotor and the bearing; the spiral groove line type mould imitates the leaf sequence structure of sunflower seed arrangement, namely the spiral groove is arranged along the clockwise and anticlockwise inclined lines formed by sunflower seed arrangement, so that two spiral grooves in the rotation direction are formed. According to the invention, dynamic pressure and static pressure lubrication effects are generated in the circumferential direction of the bearing through the special structure of the spiral groove, so that the bearing capacity of the bearing is improved; the rotor has good lubrication effect under the condition of positive and negative rotation, the working stability of the rotor is improved, and the leakage of the lubricant is reduced.
Description
Technical Field
The invention relates to a spiral groove thrust bearing, in particular to a bionic spiral groove thrust bearing with a diagonal structure formed by arranging spiral groove linear type sunflower-like kernels.
Background
The spiral groove thrust bearing is a thrust bearing with good hydrodynamic effect, and the working surface of the thrust bearing has grooves, openings or steps with special structures to form a gap convergence section towards the sliding speed direction, so that a strong wedge dynamic pressure effect is generated by utilizing the convergence section. The working principle is as follows: when the rotor moves at high speed relative to the bearing pair, the lubricant is driven to flow from the outside of the bearing to the rotation center, and a radial pumping effect is generated. At the same time, the lubricant flows circumferentially periodically through the sump and land, thereby creating static and dynamic pressure effects. The sum of the two effects gives a higher load carrying capacity to the thrust bearing. The spiral groove bearing has the advantages of high bearing capacity, good stability, simple structure and the like, and is widely used as a thrust component of low-temperature high-speed machines such as a turbine expander and the like.
The application environment of the spiral groove thrust bearing requires that the spiral groove thrust bearing has higher bearing capacity and better lubricating effect. In practical application, the phenomena of poor lubrication effect and large friction force are often encountered, so that incomplete liquid lubrication is caused, the bearing capacity is reduced, and the normal operation of the rotating part is prevented. One possible solution to these problems is to improve the helical flute profile. Several typical helical groove patterns exist today: logarithmic spiral grooves, oblique straight spiral grooves, circular arc spiral grooves, and parabolic spiral grooves. The research of the spiral groove line type has important significance for improving hydrodynamic effect, reducing friction, improving bearing capacity and the like.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a bionic spiral groove thrust bearing, which has a spiral groove line type inclined line structure formed by imitating sunflower seed arrangement.
The technical scheme adopted by the invention is as follows:
the invention comprises a rotor and a bearing, wherein the end surface of the bearing is provided with a spiral groove, a platform area and a dam area, the dam area is positioned at the inner edge of the end surface of the bearing, the end surface of the outer periphery of the dam area is provided with the spiral groove, and the surface of the end surface of the outer periphery of the dam area, which is not provided with the spiral groove, forms the platform area; the rotor rotates relative to the bearing, and lubricant is filled between the rotor and the bearing.
The platform area and the dam area are of equal height, namely the surfaces of the platform area and the dam area are on the same plane.
The lubricant is water, air, lubricating oil or lubricating grease, etc.
The spiral groove adopts a leaf sequence structure of sunflower seed arrangement, and is arranged along an inclined line formed by sunflower seed arrangement.
The number of the spiral grooves in the two spiral directions is equal, each of the spiral grooves is 10-20, and the groove depth h g And oil film thickness h 1 Ratio h of g /h l =2 to 5; groove length ratio λ= (r) o -r g )/(r o -r i )＝0.5～0.9，r g Represents the outer diameter of the dam area, r o Represents the outer diameter of the bearing, r i Indicating the bearing inner diameter.
The spiral groove comprises two plane spiral grooves which are arranged on the bearing end face at the periphery of the dam area and extend to the outer edge of the bearing end face, wherein the clockwise spiral groove and the anticlockwise spiral groove are respectively arranged along oblique lines in two directions formed by arrangement of sunflower seeds, and the clockwise spiral groove and the anticlockwise spiral groove are intersected to form a fork-shaped leaf sequence structure for arrangement of the sunflower seeds.
The outer edge of the end face of the bearing is also provided with a dam region, an annular pit structure or a bulge structure is arranged between the two dam regions at the inner edge and the outer edge of the end face of the bearing, the sections of the pit structure and the bulge structure are semicircular, and spiral grooves are formed in the surfaces of the pit structure or the bulge structure; the end face of the rotor is provided with a corresponding annular protruding structure or a corresponding pit structure, and the cross sections of the protruding structure and the pit structure are semicircular, so that the pit structure of the bearing is embedded with the protruding structure of the rotor or the protruding structure of the bearing is embedded with the pit structure of the rotor;
the spiral groove comprises two spiral grooves of a clockwise spiral groove and a counterclockwise spiral groove which are formed on the surface of a protruding structure or a pit structure on the bearing, and the clockwise spiral groove and the counterclockwise spiral groove are respectively arranged along inclined lines of two directions formed by arranging sunflower seeds on the projection of the bottom surface of the bearing, so that the clockwise spiral groove and the counterclockwise spiral groove intersect to form a fork-shaped leaf sequence structure for arranging the sunflower seeds.
A gap of 2-4 mm is formed between the concave pit structure of the bearing and the convex structure of the rotor or between the convex structure of the bearing and the concave pit structure of the rotor, and a lubricant is distributed in the gap.
The spiral grooves are only arranged on the surfaces of the pit structures or the convex structures and do not extend to the dam area.
On the projection of the bottom surface of the bearing, the lines of the clockwise spiral groove and the anticlockwise spiral groove are all leaf sequence structures which are arranged by sunflower seeds, the clockwise spiral groove simulates the clockwise inclined line of the sunflower seeds, and the anticlockwise spiral groove simulates the anticlockwise inclined line of the sunflower seeds.
According to the invention, the lubricant is brought into the working gap in the rotating process of the rotor relative to the bearing, and dynamic pressure and static pressure lubrication effects are generated in the circumferential direction of the bearing through the special structure of the spiral groove, so that the bearing capacity is improved; the rotor has good lubrication effect under the condition of positive and negative rotation, the staggered groove and table structure enhances the hydrodynamic pressure effect, the pit-bulge mosaic structure improves the working stability of the rotor, and the lubricant leakage is reduced.
The invention has the beneficial effects that:
the structure of the invention can strengthen the step effect of the circumference of the bearing, strengthen the fluid dynamic pressure effect and improve the bearing capacity of the bearing.
The rotor has good lubrication effect and fluid dynamic pressure effect during forward and reverse rotation, so that lubricating oil can quickly and fully fill gaps, friction is reduced, incomplete liquid lubrication is avoided, the circumferential stepped effect of the bearing is enhanced, the fluid dynamic pressure effect is enhanced, and the bearing capacity of the bearing is improved.
The invention increases the relative movement surface area through the annular pit-bulge mosaic structure of the bearing and the rotor, improves the working stability of the rotor, and is beneficial to reducing the leakage of lubricant. And the thrust bearing can bear axial load and also can bear certain radial load.
Drawings
Fig. 1 is a schematic view of sunflower seed leaf sequence structural model of sunflower seed distribution of the present invention.
Fig. 2 is a schematic diagram of the bionic spiral groove thrust bearing end face structure of example 1.
Fig. 3 is a cross-sectional view of example 1.
Fig. 4 is a schematic diagram of the bionic spiral groove thrust bearing end face structure of example 2.
Fig. 5 is a cross-sectional view of example 2.
Fig. 6 is a schematic diagram of the bionic spiral groove thrust bearing end face structure of example 3.
FIG. 7 is a cross-sectional view of example 3.
In the figure: 1. spiral groove, 2, platform district, 3, dam district, 4, clockwise spiral groove, 5, anticlockwise spiral groove, 7, pit structure, 8, protruding structure, 9, protruding structure, 10, pit structure, 11, rotor, 12, bearing.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The concrete implementation of the invention comprises a rotor 11 and a bearing 12, wherein the end surface of the bearing 12 is provided with a spiral groove 1, a platform area 2 and a dam area 3, the dam area 3 is positioned at the inner edge of the end surface of the bearing 12, the end surface of the bearing 12 at the periphery of the dam area 3 is provided with the spiral groove 1, and the surface of the end surface of the bearing 12 at the periphery of the dam area 3, which is not provided with the spiral groove 1, forms the platform area 2; the rotor 11 rotates relative to the bearing 12, and the space between the rotor 11 and the bearing 12 is filled with lubricant.
As shown in FIG. 1, which is a schematic diagram of a sunflower seed distribution model, sunflower disc seed distribution presents a spiral shape, and a leaf sequence theory in bioscience shows that a sunflower seed distribution structure meets a F.R.Yeatts leaf sequence model to form a sunflower seed leaf sequence structure:
wherein: θ is the polar angle of the nth raised grain; r is the polar radius of the nth raised grain; r is R 0 Is the radius of the flower or fruit; k is a leaf order coefficient, determined by grain size, and n represents the ordinal number of the raised grain.
This distribution causes the sunflower seeds to appear in a diagonal line clockwise and counterclockwise. The spiral groove 1 adopts a leaf sequence structure of sunflower seeds, the spiral groove 1 is arranged along an inclined line formed by arranging sunflower seeds, and the sunflower seeds are distributed in a structure with self-cutting function, maximum heat radiation absorption function and low resistance divergence function on fluid.
Embodiments of the invention are as follows:
example 1
As shown in fig. 2 and 3, the spiral groove 1, the land 2 and the dam 3 are included. The spiral groove 1 comprises two plane spiral grooves which are formed on the end face of the bearing 12 at the periphery of the dam area 3 and extend to the outer edge of the end face of the bearing 12, wherein all the clockwise spiral grooves 4 are consistent in outward direction from the dam area, the circumferential spacing between every two adjacent clockwise spiral grooves 4 is uniform, all the counterclockwise spiral grooves 5 are consistent in outward direction from the dam area, the circumferential spacing between every two adjacent counterclockwise spiral grooves 5 is uniform, and the clockwise spiral grooves 4 and the counterclockwise spiral grooves 5 are respectively arranged along the inclined lines of two directions formed by arranging sunflower seeds, so that the clockwise spiral grooves 4 and the counterclockwise spiral grooves 5 are intersected.
The spiral groove line type adopts a leaf sequence structure of sunflower seeds, and simulates the shape of an inclined line formed by sunflower disc seeds. In the design process, points conforming to the formula (1) can be selected on the working surface of the bearing to form a diagonal lattice, the points are connected into a smooth curve, and a spiral groove with a certain width and depth is processed along the diagonal curve.
Example 2
As shown in fig. 4 and 5, the outer edge of the end face of the bearing 12 is also provided with a dam region 3, an annular pit structure 7 is arranged between the two dam regions 3 at the inner and outer edges of the end face of the bearing 12, the section of the pit structure is semicircular, and a spiral groove 1 is arranged on the surface of the pit structure; the end face of the rotor 11 is provided with a corresponding annular protruding structure 8, and the cross section of the protruding structure is semicircular, so that the pit structure of the bearing 12 is embedded with the protruding structure of the rotor 11;
the spiral groove 1 comprises two spiral grooves of a clockwise spiral groove 4 and a counterclockwise spiral groove 5 which are formed on the pit structure surface of the bearing 12, all the clockwise spiral grooves 4 are consistent in outward rotation direction, the adjacent clockwise spiral grooves 4 are uniformly spaced along the circumferential direction, all the counterclockwise spiral grooves 5 are consistent in outward rotation direction, the adjacent counterclockwise spiral grooves 5 are uniformly spaced along the circumferential direction, and on the projection of the bottom surface of the bearing, the clockwise spiral grooves 4 and the counterclockwise spiral grooves 5 are respectively arranged along the inclined lines of two directions formed by arranging sunflower seeds, so that the clockwise spiral grooves 4 and the counterclockwise spiral grooves 5 are intersected.
A gap of 2-4 mm is provided between the pit structure of the bearing 12 and the projection structure of the rotor 11, and a lubricant is distributed in the gap.
The spiral groove thrust bearing can bear axial load and also can bear certain radial load.
Example 3
As shown in fig. 6 and 7, the outer edge of the end face of the bearing 12 is also provided with a dam region 3, an annular convex structure 9 is arranged between the two dam regions 3 at the inner and outer edges of the end face of the bearing 12, the cross section of the convex structure is semicircular, and a spiral groove 1 is arranged on the surface of the convex structure; the end face of the rotor 11 is provided with a corresponding annular pit structure 10, and the section of the pit structure is semicircular, so that the protruding structure of the bearing 12 is embedded with the pit structure of the rotor 11;
the spiral groove 1 comprises two spiral grooves of a clockwise spiral groove 4 and a counterclockwise spiral groove 5 which are formed on the surface of a convex structure of the bearing 12, all the clockwise spiral grooves 4 are consistent in outward rotation, the adjacent clockwise spiral grooves 4 are uniformly spaced along the circumferential direction, all the counterclockwise spiral grooves 5 are consistent in outward rotation, the adjacent counterclockwise spiral grooves 5 are uniformly spaced along the circumferential direction, and on the projection of the bottom surface of the bearing, the clockwise spiral grooves 4 and the counterclockwise spiral grooves 5 are respectively arranged along the inclined lines of two directions formed by arranging sunflower seeds, so that the clockwise spiral grooves 4 and the counterclockwise spiral grooves 5 are intersected.
A gap of 2-4 mm is provided between the convex structure of the bearing 12 and the concave structure of the rotor 11, and a lubricant is distributed in the gap.
The spiral groove thrust bearing can bear axial load and also can bear certain radial load.
The working principle of the invention is as follows:
the spiral groove line type imitates a diagonal structure formed by sunflower seed arrangement, and utilizes self-cutting action, low-resistance divergence action of fluid and the like.
In the thrust bearing of example 1: as shown in fig. 3, the rotor is clockwise (ω 1 ) When rotating, the lubricant is mainly carried by the counterclockwise spiral groove, and the rotor is counterclockwise (ω 2 ) When the rotor rotates, the lubricant is mainly conveyed by the clockwise spiral groove, so that the rotor can quickly and fully fill the gap between the bearing and the rotor when rotating positively and negatively, and a good lubricating effect is generated. Effectively avoiding incomplete liquid lubrication.
The lubricant periodically flows through the spiral grooves and the table areas along the circumferential direction of the bearing in the process of being brought into the gap between the bearing and the rotor, so that a stepped dynamic pressure effect is generated, and the bearing capacity of the bearing is improved. The bidirectional spiral groove structure of the invention can generate good circumferential step effect when the rotor rotates positively and negatively, enhances hydrodynamic pressure effect, and ensures that the bearing has higher bearing capacity when the bearing rotates positively and negatively.
In the radial direction of the bearing, the helical groove produces an increase in pressure due to its compression of the lubricant. The lubricant is continuously compressed at the root of the groove, blocked by the dam area, and the pressure is further increased. The bearing develops a load bearing capacity by virtue of the high pressure of the lubricant in the region of the spiral grooves.
In the thrust bearings of examples 2 and 3: as shown in fig. 5, the rotor is clockwise (ω 1 ) When rotating, the lubricant is mainly carried by the counterclockwise spiral groove, and the rotor is counterclockwise (ω 2 ) When rotating, the lubricant is mainly conveyed by the clockwise spiral groove, so that the rotor has good lubrication effect and fluid dynamic pressure effect during forward and reverse rotation.
Based on the low-resistance dispersion effect of the sunflower disc on the fluid, the spiral grooves in the two spiral directions are mutually staggered, so that the lubricant can quickly and fully fill the gaps, and friction can be reduced. The staggered groove table structure enhances the step effect of the circumference of the bearing, enhances the hydrodynamic pressure effect and improves the bearing capacity of the bearing.
The annular pit-bulge mosaic structure of the bearing and the rotor increases the relative movement surface area, improves the working stability and is beneficial to reducing the leakage of the lubricant. The bearing force has a component along the radial direction of the bearing, so that the bearing can bear axial load and also can bear certain radial load.
The foregoing detailed description is provided to illustrate the present invention and not to limit the invention, and any modifications and changes made to the present invention within the spirit of the present invention and the scope of the appended claims fall within the scope of the present invention.
Claims (4)
1. The bionic spiral groove thrust bearing comprises a rotor (11) and a bearing (12), and is characterized in that: the end face of the bearing (12) is provided with a spiral groove (1), a platform area (2) and a dam area (3), the dam area (3) is positioned at the inner edge of the end face of the bearing (12), the spiral groove (1) is formed on the end face of the bearing (12) at the periphery of the dam area (3), and the platform area (2) is formed on the surface of the end face of the bearing (12) at the periphery of the dam area (3), which is not provided with the spiral groove (1); the rotor (11) rotates relative to the bearing (12), and lubricant is filled between the rotor (11) and the bearing (12);
the spiral groove (1) extends to the outer edge of the end face of the bearing (12) and is consistent in outward rotation from the center;
the spiral groove (1) adopts a leaf sequence structure of sunflower seeds, and the spiral groove (1) is arranged along a diagonal line formed by sunflower disc seeds;
the spiral groove (1) comprises two plane spiral grooves which are arranged on the end face of the bearing (12) at the periphery of the dam area (3) and extend to the outer edge of the end face of the bearing (12), wherein the two plane spiral grooves are a clockwise spiral groove (4) and a counterclockwise spiral groove (5), and the clockwise spiral groove (4) and the counterclockwise spiral groove (5) are respectively arranged along oblique lines in two directions formed by arrangement of sunflower seeds, so that the clockwise spiral groove (4) and the counterclockwise spiral groove (5) are intersected;
the outer edge of the end face of the bearing (12) is also provided with a dam region (3), an annular pit structure or a bulge structure is arranged between the two dam regions (3) at the inner edge and the outer edge of the end face of the bearing (12), the sections of the pit structure and the bulge structure are semicircular, and a spiral groove (1) is formed in the surface of the pit structure or the bulge structure; the end face of the rotor (11) is provided with a corresponding annular protruding structure or a corresponding pit structure, and the cross sections of the protruding structure and the pit structure are semicircular, so that the pit structure of the bearing (12) is embedded with the protruding structure of the rotor (11) or the protruding structure of the bearing (12) is embedded with the pit structure of the rotor (11); the spiral groove (1) comprises two spiral grooves, namely a clockwise spiral groove (4) and a counterclockwise spiral groove (5), which are formed on the surface of a protruding structure or a pit structure on the bearing (12), wherein the clockwise spiral groove (4) and the counterclockwise spiral groove (5) are respectively arranged along inclined lines in two directions formed by arranging sunflower seeds on the projection of the bottom surface of the bearing, so that the clockwise spiral groove (4) and the counterclockwise spiral groove (5) are intersected.
2. A biomimetic spiral groove thrust bearing as in claim 1, wherein: in the spiral groove (1), the number of the spiral grooves in two spiral directions is equal, each of the spiral grooves is 10-20, and the groove depth h g And oil film thickness h 1 Ratio h of g /h l =2 to 5; groove length ratio λ= (r) o -r g )/(r o -r i )＝0.5～0.9，r g Represents the outer diameter of the dam area, r o Represents the outer diameter of the bearing, r i Indicating the bearing inner diameter.
3. A biomimetic spiral groove thrust bearing as in claim 1, wherein: a gap of 2-4 mm is formed between the pit structure of the bearing (12) and the protruding structure of the rotor (11) or between the protruding structure of the bearing (12) and the pit structure of the rotor (11), and a lubricant is distributed in the gap.
4. A biomimetic spiral groove thrust bearing as in claim 1, wherein: the spiral groove (1) is only arranged on the surface of the pit structure or the convex structure and does not extend to the dam area (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230124.9A CN107882870B (en) | 2017-11-29 | 2017-11-29 | Bionic spiral groove thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711230124.9A CN107882870B (en) | 2017-11-29 | 2017-11-29 | Bionic spiral groove thrust bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107882870A CN107882870A (en) | 2018-04-06 |
| CN107882870B true CN107882870B (en) | 2024-03-22 |
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|---|---|---|---|
| CN201711230124.9A Active CN107882870B (en) | 2017-11-29 | 2017-11-29 | Bionic spiral groove thrust bearing |
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| CN109638993B (en) * | 2018-11-26 | 2024-06-11 | 四川芯智热控技术有限公司 | Anti-shifting structure of electronic water pump rotor assembly |
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|---|---|---|---|---|
| GB927736A (en) * | 1960-07-23 | 1963-06-06 | Philips Nv | Improvements in or relating to axial thrust bearings for rotary shafts |
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