CN205978078U - Self -circulation slide bearing of formula - Google Patents
Self -circulation slide bearing of formula Download PDFInfo
- Publication number
- CN205978078U CN205978078U CN201620701314.9U CN201620701314U CN205978078U CN 205978078 U CN205978078 U CN 205978078U CN 201620701314 U CN201620701314 U CN 201620701314U CN 205978078 U CN205978078 U CN 205978078U
- Authority
- CN
- China
- Prior art keywords
- spiral groove
- bearing
- spiral
- groove
- bearing shell
- 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.)
- Withdrawn - After Issue
Links
- 239000010687 lubricating oil Substances 0.000 claims abstract description 15
- 239000004519 grease Substances 0.000 claims abstract description 10
- 230000001050 lubricating effect Effects 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 10
- 239000003921 oil Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000000916 dilatatory effect Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a self -circulation slide bearing of formula. The axle bush inner wall is equipped with both ends confined spiral groove, and lubricating oil or lubricating grease is at the spiral groove inner loop, and spiral groove along axle bush equidistance, spiral groove are the helicla flute of degree of deepening, each ring equal coaxial inner conductor of spiral of spiral groove, and the axial lead of spiral groove is higher than the axial lead of axle bush for the groove depth of the spiral groove of axle bush lower part part is shallow than the groove depth of the spiral groove part on axle bush upper portion, makes to be the wedge between inner wall and the tank bottom surface of axle bush bottom. The utility model discloses it is lubricated to be favorable to forming the dynamic pressure, and improves radial bearing capacity, has slowed down the leakage of lubricating oil or lubricating grease, the manufacture of being convenient for.
Description
Technical field
The utility model is related to a kind of sliding bearing, especially relates to a kind of sliding bearing of self-circulation type.
Background technology
Inner surface of bearing bush is loading end and rubbing surface, is the core component in sliding bearing.Sliding bearing is in load
During the lower work of effect, when rotating speed reaches certain value, in oil film, the pressure of each point makes a concerted effort and external applied load FRBalance, its level side
To pressure and make a concerted effort to be zero, obtain balance, so, axle journal is just stable on equilbrium position rotation.
Although, in theory, the simple relative gap Ψ that increases can make its contact surface form sharp wedge gap, has
Beneficial to the formation of hydrodynamic lubrication, but on the one hand the oil pressure of lubricating oil film can be made excessively to concentrate, thus reducing the tired longevity of bearing
Life, one side axle journal is excessive with the gap of bearing shell, lubricant leakage is serious, is unfavorable for the stable operation of bearing.By changing axle
Watt spiral inner wall groove forms wedge effect and is conducive to hydrodynamic lubrication, thus improving bearing capacity, simultaneously without increasing bearing shell
With the relative gap Ψ of axle journal, increased antiwhip, save space.
Utility model content
In order to solve problem present in background technology, the purpose of this utility model is to provide a kind of cunning of self-circulation type
Dynamic bearing, has equally distributed enclosed spiral groove vertically inside bearing shell, and helicla flute is varying depth, is imitated by wedge shape
The formation of hydrodynamic lubrication should be promoted, improve bearing capacity.
The utility model adopts the technical scheme that：
Described bearing is the bearing shell of annular, and bearing shell inwall is provided with the spiral groove of closed at both ends, lubricating oil or lubricating grease
In spiral groove interior circulation.Axle sleeve is contained in the bearing shell of sliding bearing, and lubricating oil or lubricating grease remain predominantly in spiral groove
In gap and axle between.
Described spiral groove is equidistant along bearing shell, and spiral grooves are along the rectangular cross-section in tangent to helix direction.
Described spiral groove is the helicla flute of varying depth.
The equal coaxial inner conductor of each circle spiral of described spiral groove, the axial line of spiral groove is higher than the axle center of bearing shell
Line so that the groove depth of the spiral groove part of bearing shell bottom is shallow compared with the groove depth of the spiral groove part on bearing shell top, thus
Make wedge shaped between the inwall of bearing shell bottom and bottom surface.
Described bearing shell adopts babbit or other bronze material, for example, tin bronze ZCuSn10P1 etc., aluminium bronze
ZCuAl10Fe3 etc..
The beneficial effects of the utility model are：
The utility model is wedge shaped with axle journal by spiral trench bottom, and wedge effect is conducive to the formation of hydrodynamic lubrication, carries
High bearing capacity, it also avoid oil pressure simultaneously and concentrates, increased the service life of bearing.
Meanwhile, helicla flute closing is so that lubricating oil and lubricating grease, in helicla flute internal circulation flow, decrease lubricant and let out
Leakage, it is to avoid the waste of lubricating oil or lubricant.Lubricating oil or lubricating grease self-loopa in groove, reduce oil film temperature,
Improve the bearing capacity of bearing.
Inside the utility model bearing shell, helicla flute is brief due to designing, and is thus advantageous to manufacture processing.
Brief description
Fig. 1 is the axial sectional drawing of bearing shell.
Fig. 2 is the radial direction sectional drawing of bearing shell.
Specific embodiment
Below in conjunction with drawings and Examples, the utility model is described further：
As shown in figure 1, bearing of the present utility model is the bearing shell of annular, bearing shell inwall is provided with the spirality ditch of closed at both ends
Groove, lubricating oil or lubricating grease are in spiral groove.
Axle sleeve is contained in the bearing shell of sliding bearing, and lubricating oil or lubricating grease remain predominantly between spiral groove and axle journal
In gap.When axle journal rotates forward or backwards, lubricating oil or lubricating grease, in helicla flute internal circulation flow, reduce lubricating oil or profit
The leakage of consistent lubricant.Helicla flute closed at both ends, reduces oil film temperature, improves the bearing capacity of bearing.
Spiral groove is equidistant along bearing shell, and spiral grooves are along the rectangular cross-section in tangent to helix direction.
As shown in Fig. 2 spiral groove is the helicla flute of varying depth, helicla flute geometry vertically is circle, its
The center of circle is located above the bearing liner center of circle, forms the geometry that bearing shell upper groove is deep, undercut is shallow so that bottom helicla flute
Wedge shaped with axle journal, be conducive to hydrodynamic lubrication, improve bearing capacity.
Embodiment of the present utility model is as follows：
Case study on implementation 1
Case 1 is used for the self-circulation type sliding bearing under high speed light loading, such as steam turbine, bearing of blower.
When case is chronically under high speed light loading, such as steam turbine, bearing of blower, in order to improve its hydrodynamic lubrication
Ability, and consider oil leak amount and the heat loss through convection at its bearing two ends, takes width-diameter ratio B/d value 0.3～1
Between；Because speed is higher, in order to avoid bearing temperature rise is too high, take relative gap Ψ value=0.001～0.002, be higher value,
Concrete numerical value is tentatively tried to achieve according to speed v by formula (5)；In order to avoid larger frictional resistance and power consumption, relatively low from viscosity
Lubricating oil.
Meanwhile, if now the density of bearing shell internal helicoid connected in star larger although being conducive to hydrodynamic lubrication, bearing two ends
Oil leak amount is relatively low, but and be unfavorable for bearing radiating it is contemplated that under high-speed motion hydrodynamic lubrication itself be just easier to be formed and
Very high bearing capacity is not needed, the dense degree taking spiral groove is a relatively low value, that is, spiral shell under side crops industry
Line lift angle λ be the larger value that compares it is contemplated that processing technology, λ value is 20 about.
Case study on implementation 2
Case 2 is used for the self-circulation type sliding bearing under low-speed heave-load, such as lathe, dilatory machine bearing.
When case is chronically under low-speed heave-load, such as lathe, dilatory machine bearing, improve its hydrodynamic lubrication for knowing clearly
Ability, and consider oil leak amount and the heat loss through convection at its bearing two ends, take width-diameter ratio B/d value 0.8～
1.2 between；Because load is larger, in order to ensure its bearing capacity, take between relative gap Ψ value=0.0002～0.001, tool
Body numerical value is tentatively tried to achieve according to speed v by formula (5)；In order to improve the bearing capacity of bearing, from the higher lubricating oil of viscosity.
Meanwhile, bearing rotating speed is relatively low and is unfavorable for that hydrodynamic lubrication is formed, and the holding of the higher bearing of larger loading demands
Loading capability, at this time, it may be necessary to increase the dense degree of spiral groove, improves its bearing capacity by wedge effect, that is,
Lead angle λ is a relatively small value, λ value<10゜.
Above-mentioned specific embodiment is used for illustrating the utility model, rather than the utility model is limited,
In spirit of the present utility model and scope of the claims, any modifications and changes that the utility model is made, all fall
Enter protection domain of the present utility model.
Claims (4)
1. a kind of sliding bearing of self-circulation type, described bearing be annular bearing shell it is characterised in that：Bearing shell inwall is provided with two ends
The spiral groove of closing, lubricating oil or lubricating grease are in spiral groove interior circulation；
Described spiral groove is the helicla flute of varying depth；The equal coaxial inner conductor of each circle spiral of described spiral groove, spirality
The axial line of groove be higher than bearing shell axial line so that the spiral groove part of bearing shell bottom groove depth compared with bearing shell top spiral shell
The groove depth of rotation shape trench portions is shallow, so that wedge shaped between the inwall of bearing shell bottom and bottom surface.
2. a kind of self-circulation type according to claim 1 sliding bearing it is characterised in that：Described spiral groove is along axle
Watt equidistant, spiral grooves are along the rectangular cross-section in tangent to helix direction.
3. a kind of self-circulation type according to claim 1 sliding bearing it is characterised in that：Described bearing shell adopts Pasteur to close
Gold.
4. a kind of self-circulation type according to claim 1 sliding bearing it is characterised in that：Described bush material adopts
GCr15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620701314.9U CN205978078U (en) | 2016-07-04 | 2016-07-04 | Self -circulation slide bearing of formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620701314.9U CN205978078U (en) | 2016-07-04 | 2016-07-04 | Self -circulation slide bearing of formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205978078U true CN205978078U (en) | 2017-02-22 |
Family
ID=58023492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620701314.9U Withdrawn - After Issue CN205978078U (en) | 2016-07-04 | 2016-07-04 | Self -circulation slide bearing of formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205978078U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050922A (en) * | 2016-07-04 | 2016-10-26 | 浙江大学 | Self-circulation slide bearing |
| CN107956802A (en) * | 2017-12-22 | 2018-04-24 | 天津辅然分离机械有限公司 | The sliding bearing sealing structure of decanter centrifuge screw spindle |
| WO2020034054A1 (en) * | 2018-08-13 | 2020-02-20 | 苏州福尔镘精密工具有限公司 | Novel sleeve |
-
2016
- 2016-07-04 CN CN201620701314.9U patent/CN205978078U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050922A (en) * | 2016-07-04 | 2016-10-26 | 浙江大学 | Self-circulation slide bearing |
| CN106050922B (en) * | 2016-07-04 | 2018-08-14 | 浙江大学 | The sliding bearing of self-circulation type |
| CN107956802A (en) * | 2017-12-22 | 2018-04-24 | 天津辅然分离机械有限公司 | The sliding bearing sealing structure of decanter centrifuge screw spindle |
| WO2020034054A1 (en) * | 2018-08-13 | 2020-02-20 | 苏州福尔镘精密工具有限公司 | Novel sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170222 Effective date of abandoning: 20180814 |
|
| AV01 | Patent right actively abandoned |