CN208236901U - A kind of textured gas bush(ing) bearing of journal surface - Google Patents
A kind of textured gas bush(ing) bearing of journal surface Download PDFInfo
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- CN208236901U CN208236901U CN201820001331.0U CN201820001331U CN208236901U CN 208236901 U CN208236901 U CN 208236901U CN 201820001331 U CN201820001331 U CN 201820001331U CN 208236901 U CN208236901 U CN 208236901U
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- texture
- bearing
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- 230000004323 axial length Effects 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 230000001050 lubricating effect Effects 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 51
- 238000010586 diagram Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The utility model relates to a kind of textured gas bush(ing) bearings of journal surface, belong to sliding bearing technical field.The lubricating fluid of the sliding bearing is gas, including axle journal and bearing shell, the axial direction of axle journal are divided into m region, the circumferential direction of axle journal is divided into n region, to be evenly arranged with micro- texture in m × n arranged array region on the axial and circumferential of axle journal, wherein 1≤m≤2,1≤n≤6；Micro- texture area is symmetric along bearing centre in the axial direction；Axle journal axial length is L, and micro- texture area axial length is l, and micro- two region axial spacing of texture is l1, wherein micro- texture area axial length l and the ratio of axle journal axial length L are (0.2~1.0): 1, micro- two region axial spacing of texture is l1For 0≤l1≤L-l.The micro- texture of the journal surface of the utility model can both expand the supporting region of air film between sliding bearing, reduce air film pressure difference, increase the stability of gas bush(ing) bearing, air film supported power and rigidity can be effectively increased again, the lubrication property that sliding bearing can also be enhanced increases the service life of sliding bearing.
Description
Technical field
The utility model relates to a kind of textured gas bush(ing) bearings of journal surface, belong to sliding bearing technology neck
Domain.
Background technique
Since last century mid-term, gas lubrication technology is rapidly developed, and especially gas bush(ing) bearing is broken in recent years
The situation that hydrodynamic lubrication rules all the land.Compared with hydrodynamic lubrication, gas bush(ing) bearing has revolving speed height, precision height, function
Consume low and service life it is long the advantages that.Since the viscosity of gas is about the one thousandth of liquid, so gas bearing can be high
Revolving speed under work and almost without fretting wear；In addition there are also clean cleanings for gas bush(ing) bearing, can high temperature resistant and low temperature
Equal good characteristics.Therefore its use scope is more and more wider, and all receives an acclaim in every field.But due to gas radial direction
The lubricant that sliding bearing uses is gas, so its bearing capacity is lower, rigidity is low, stability for compared with hydrodynamic lubrication
Poor, gas bush(ing) bearing is easy to appear unstable phenomenon.
Currently, the research and improvement to sliding bearing surface texture all concentrate on oil lubrication or grease lubrication sliding bearing.In
" a kind of taper dynamic and hydrostatic bearing sub-assembly of diameter of axle surface-texturing " applied in state patent CN106870562A, be
A kind of pressure water or the cone bearing journal surface finished surface texture of pressure oil lubrication cooperate with structures such as oil pocket and flow controllers
To reduce temperature rise, increase speed.In addition liquid sliding bearing improve there are also some patents and paper and studied to reach
To improve revolving speed, reduce temperature rise, enhance lubrication property the purpose of, but due to gas bearing itself have working speed height, rub
The features such as scouring damage is small, there is no the characteristics such as cavitation, these technologies for compressibility and gas bearing additionally, due to gas
All it is not suitable for gas bearing.
Utility model content
The utility model aims at the problems existing in the prior art, and provides a kind of textured gases of journal surface to radially slide
Bearing, the sliding bearing structure is simple, easy to process, can effectively improve the greasy property between friction pair, further decrease sliding
The fretting wear of bearing；Expand the supporting region of air film between sliding bearing, drop by processing micro- texture on sliding bearing axle journal
Low air film pressure difference to increase the stability of gas bush(ing) bearing, and can effectively increase air film supported power and rigidity.
The utility model be solve its technical problem and the technical solution adopted is that:
A kind of textured gas bush(ing) bearing of journal surface, lubricating fluid are gas, including axle journal and bearing shell, axis
The axial direction of neck is divided into m region, and the circumferential direction of axle journal is divided into n region, arranges on the axial and circumferential of axle journal for m × n
Micro- texture is evenly arranged in array region, wherein 1≤m≤2,1≤n≤6；Micro- texture area is in the axial direction with respect to its center pair
Axis is claimed to be symmetric；Axle journal axial length is L, and micro- texture area axial length is l, and micro- two region axial spacing of texture is
l1, wherein micro- texture area axial length l and the ratio of axle journal axial length L are (0.2~1.0): 1, micro- two region of texture is axial
Spacing is l1For 0≤l1≤L-l；
Micro- texture area is uniformly distributed in the circumferential direction of axle journal, in the circumferential circumferential direction angle shared by each micro- texture area
Degree is set as β, wherein 15 °≤β≤120 °；
The pore density S of micro- texturepIt is 10~95%；The pore density S of micro- texture controlling unitpFor micropore
Projected area and micropore control unit area ratio；
The micropore aspect ratio ε of micro- texture1It is 0.005~0.5, the micropore depth of micro- texture is 0.1~100 μm；
Micro- texture is cylindrical pit, cuboid pit, segment-shaped pit, triangular prism shaped pit, multi-edge column-shaped
Pit it is one or more.
Micro- texture on the textured gas bush(ing) bearing axle journal of journal surface described in the utility model, can be used sharp
The processing of the prior arts such as light processing, electrochemical corrosion, electric spark.
Working principle: when the textured gas bush(ing) bearing axle journal direction as shown in the figure of journal surface rotates, by
In gas dynamic pressure effect, wedge-shaped air film is formed between axle journal and bearing shell；Air film can be reduced by processing micro- texture in journal surface
Maximum pressure, expand sliding bearing between air film supporting region so that increase gas bush(ing) bearing stability；Due to
The presence of micro- texture expands the supporting region of air film between sliding bearing, it is possible to effectively increase air film supported power and rigidity；?
Micro- texture is processed on gas bush(ing) bearing axle journal, increases the air-film thickness of micro- texture area, it is possible to enhancing sliding
The lubrication property of bearing increases the service life of sliding bearing.
The utility model has the beneficial effects that
(1) the utility model radially slides axis in gas bush(ing) bearing journal surface finished surface texture, gas
It is relatively small to hold size, precision is higher, so the micro- texture structure of journal surface is simply easy to process；
(2) the utility model in gas bush(ing) bearing journal surface processing certain shapes and the micro- of density by knitting
Structure can increase the bearing capacity and rigidity of sliding bearing air film compared to smooth axle journal；
(3) the utility model can expand sliding axle by processing micro- texture in gas bush(ing) bearing journal surface
The supporting region of an air film is held, so that increasing the stability of gas bush(ing) bearing；
(4) the utility model can be further enhanced by processing micro- texture in gas bush(ing) bearing journal surface
The greasy property of sliding bearing increases sliding bearing service life.
Detailed description of the invention
Fig. 1 is the textured gas bush(ing) bearing structural schematic diagram of embodiment journal surface；
Fig. 2 is journal surface textured gas bush(ing) bearing structural schematic diagram when embodiment revolving speed is reversed；
Fig. 3 is the textured structural schematic diagram of embodiment axle journal circumferential portion；
Fig. 4 is embodiment axle journal all textured structural schematic diagrams；
Fig. 5 is the textured structural schematic diagram of embodiment axle journal axial component；
Fig. 6 is the textured gas bush(ing) bearing journal surface of embodiment journal surface circumferentially expanded schematic diagram；
Fig. 7 is the structural schematic diagram (triangular prism shaped) of micro- texture in embodiment；
Fig. 8 is the structural schematic diagram (cuboid) of micro- texture in embodiment；
Fig. 9 is the structural schematic diagram (segment-shaped) of micro- texture in embodiment；
Figure 10 is the structural schematic diagram (cylinder) of micro- texture in embodiment；
In figure: 1- bearing shell, 2- axle journal, the micro- texture of 3-, the single micro- texture area circumferential direction angular range of β-, e- eccentricity, φ-
Deflection angle, the single micro- texture area axial length of ω-axle journal rotational angular velocity, l-, l1Micro- texture area axial spacing, L- axis
Neck axial length, D1- journal diameter, D1- bearing shell inner diameter.
Specific embodiment
With reference to embodiment, the utility model is described in further detail.
Embodiment 1: as shown in Fig. 1~7, a kind of textured gas bush(ing) bearing of journal surface, lubricating fluid is
Gas, including axle journal and bearing shell, the axial direction of axle journal are divided into m region, and the circumferential direction of axle journal is divided into n region, in axle journal
To be evenly arranged with micro- texture in m × n arranged array region on axial and circumferential, wherein m=1, n=2；Micro- texture area is in axis
Its opposite central symmetry axis is symmetric upwards；Axle journal axial length is L, and micro- texture area axial length is l, micro- texture two
Region axial spacing is l1, wherein micro- texture area axial length l and the ratio of axle journal axial length L are 0.8, micro- two region of texture
Axial spacing is l1It is 0；
Micro- texture area is uniformly distributed in the circumferential direction of axle journal in the present embodiment, in the circumferential shared by each micro- texture area
Circumferential angle is set as β, wherein β=90 °；
The pore density S of micro- texture in the present embodimentpIt is 80%；
The micropore aspect ratio ε of micro- texture in the present embodiment1It is 0.1, the micropore depth of micro- texture is 10 μm；
Micro- texture is cylindrical pit in the present embodiment (see Figure 10)；
Working principle: when the textured gas bush(ing) bearing axle journal direction as shown in the figure of journal surface rotates, by
In gas dynamic pressure effect, wedge-shaped air film is formed between axle journal and bearing shell；Air film can be reduced by processing micro- texture in journal surface
Maximum pressure, expand sliding bearing between air film supporting region so that increase gas bush(ing) bearing stability；Due to
The presence of micro- texture expands the supporting region of air film between sliding bearing, it is possible to effectively increase air film supported power and rigidity；?
Micro- texture is processed on gas bush(ing) bearing axle journal, increases the air-film thickness of micro- texture area, it is possible to enhancing sliding
The lubrication property of bearing increases the service life of sliding bearing.
The duty parameter of the present embodiment is taken as: radius clearance h0=5 × 10-6M, eccentricity are ε=0.5, bearing inlets
It is P with export pressure1=P2=1 × 105Pa, axle journal rotational speed omega=4 × 104r/min。
Embodiment 2: as shown in Fig. 1~7, a kind of textured gas bush(ing) bearing of journal surface, lubricating fluid is
Gas, including axle journal and bearing shell, the axial direction of axle journal are divided into m region, and the circumferential direction of axle journal is divided into n region, in axle journal
To be evenly arranged with micro- texture in m × n arranged array region on axial and circumferential, wherein m=1, n=1, i.e. journal surface are whole
It is processed into micro- texture；Micro- texture area is symmetric with respect to its central symmetry axis in the axial direction；Axle journal axial length is L, micro-
Texture area axial length is l, and micro- two region axial spacing of texture is l1, wherein micro- texture area axial length l and journal shaft
It is 1.0:1 to the ratio of length L, micro- two region axial spacing of texture is l1It is 0；
Circumferential direction angle shared by micro- texture area is set as β in the circumferential in the present embodiment, wherein β=360 °；
The pore density S of micro- texture in the present embodimentpIt is 95%；
The micropore aspect ratio ε of micro- texture in the present embodiment1It is 0.005, the micropore depth of micro- texture is 0.1 μm；
Micro- texture is cuboid pit in the present embodiment (see Fig. 8)；
The duty parameter of the present embodiment is taken as: radius clearance h0=5 × 10-6M, eccentricity are ε=0.5, bearing inlets
It is P with export pressure1=P2=1 × 105Pa, axle journal rotational speed omega=4 × 104r/min。
Embodiment 3: as shown in Fig. 1~7, a kind of textured gas bush(ing) bearing of journal surface, lubricating fluid is
Gas, including axle journal and bearing shell, the axial direction of axle journal are divided into m region, and the circumferential direction of axle journal is divided into n region, in axle journal
To be evenly arranged with micro- texture in m × n arranged array region on axial and circumferential, wherein m=2, n=1；Micro- texture area is in axis
Its opposite central symmetry axis is symmetric upwards；Axle journal axial length is L, and micro- texture area axial length is l, micro- texture two
Region axial spacing is l1, wherein micro- texture area axial length l and the ratio of axle journal axial length L are 0.2, micro- two region of texture
Axial spacing is l1For 10mm；
Micro- texture area is uniformly distributed in the circumferential direction of axle journal in the present embodiment, in the circumferential shared by each micro- texture area
Circumferential angle is set as β, wherein β=120 °；
The pore density S of micro- texture in the present embodimentpIt is 10%；
The micropore aspect ratio ε of micro- texture in the present embodiment1It is 0.5, the micropore depth of micro- texture is 100 μm；
Micro- texture is segment-shaped pit in the present embodiment (see Fig. 9)；
The duty parameter of the present embodiment is taken as: radius clearance h0=10 × 10-6M, eccentricity are ε=0.7, bearing inlets
It is P with export pressure1=P2=1 × 105Pa, axle journal rotational speed omega=6 × 104r/min。
Embodiment 4: as shown in Fig. 1~7, a kind of textured gas bush(ing) bearing of journal surface, lubricating fluid is
Gas, including axle journal and bearing shell, the axial direction of axle journal are divided into m region, and the circumferential direction of axle journal is divided into n region, in axle journal
To be evenly arranged with micro- texture in m × n arranged array region on axial and circumferential, wherein m=2, n=2；Micro- texture area is in axis
It is symmetric upwards along bearing centre；Axle journal axial length is L, and micro- texture area axial length is l, micro- two region axis of texture
It is l to spacing1, wherein micro- texture area axial length l and the ratio of axle journal axial length L are 0.3, between micro- two region axial direction of texture
Away from for l1For 10mm；
Micro- texture area is uniformly distributed in the circumferential direction of axle journal in the present embodiment, in the circumferential shared by each micro- texture area
Circumferential angle is set as β, wherein β=15 °；
The pore density S of micro- texture in the present embodimentpIt is 35%；
The micropore aspect ratio ε of micro- texture in the present embodiment1It is 0.05, the micropore depth of micro- texture is 20 μm；
Micro- texture is triangular prism shaped pit in the present embodiment (see Fig. 7)；
The duty parameter of the present embodiment is taken as: radius clearance h0=15 × 10-6M, eccentricity are ε=0.1, bearing inlets
It is P with export pressure1=P2=1 × 105Pa, axle journal rotational speed omega=8 × 104r/min。
Embodiment 5:
The textured gas bush(ing) bearing of the journal surface of the present embodiment and the structure of embodiment 4 are almost the same, no
It is with place, is to be evenly arranged with micro- texture in m × n arranged array region on the axial and circumferential of axle journal, wherein m=2,
N=6.
Embodiment 6:
The textured gas bush(ing) bearing of the journal surface of the present embodiment and the structure of embodiment 1 are almost the same, no
It is with place, micro- texture is multi-edge column-shaped pit in the present embodiment.
Embodiment 7:
The textured gas bush(ing) bearing of the journal surface of the present embodiment and the structure of embodiment 2 are almost the same, no
It is with place, micro- texture is equally distributed cylindrical pit (see Figure 10) and cuboid pit (see figure in the present embodiment
8)。
Embodiment 8:
The textured gas bush(ing) bearing of the journal surface of the present embodiment and the structure of embodiment 3 are almost the same, no
It is with place, micro- texture is equally distributed segment-shaped pit, triangular prism shaped pit and four prism type pit in the present embodiment.
Embodiment 9:
The textured gas bush(ing) bearing of the journal surface of the present embodiment and the structure of embodiment 4 are almost the same, no
It is with place, micro- texture is equally distributed cylindrical pit, cuboid pit and pentagonal prism shape pit in the present embodiment.
Embodiment 10:
The textured gas bush(ing) bearing of the journal surface of the present embodiment and the structure of embodiment 5 are almost the same, no
It is with place, micro- texture is equally distributed cylindrical pit, triangular prism shaped pit and pentagonal prism shape pit in the present embodiment.
Specific embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
Various changes can be made under the premise of objective.
Claims (5)
1. a kind of textured gas bush(ing) bearing of journal surface, it is characterised in that: lubricating fluid is gas, including axle journal
And bearing shell, the axial direction of axle journal are divided into m region, the circumferential direction of axle journal is divided into n region, is on the axial and circumferential of axle journalMicro- texture is evenly arranged in arranged array region, wherein,；Micro- texture area is in the axial direction
Its opposite central symmetry axis is symmetric；Axle journal axial length is L, and micro- texture area axial length is, micro- two region of texture
Axial spacing is, wherein micro- texture area axial lengthAnd the ratio of axle journal axial length L is (0.2 ~ 1.0): 1, micro- texture two
Region axial spacing isFor。
2. the textured gas bush(ing) bearing of journal surface according to claim 1, it is characterised in that: micro- texture area is in axis
It is uniformly distributed in the circumferential direction of neck, circumferential direction angle shared by each micro- texture area is set as in the circumferential, wherein。
3. the textured gas bush(ing) bearing of journal surface according to claim 1, it is characterised in that: micro- texture it is micro-
Hole density SpIt is 10 ~ 95%.
4. the textured gas bush(ing) bearing of journal surface according to claim 1, it is characterised in that: micro- texture it is micro-
Hole aspect ratioIt is 0.005 ~ 0.5, the micropore depth of micro- texture is 0.1 ~ 100 μm.
5. the textured gas bush(ing) bearing of journal surface according to claim 1, it is characterised in that: micro- texture is circle
Cylindrical Pit, cuboid pit, segment-shaped pit, multi-edge column-shaped pit it is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820001331.0U CN208236901U (en) | 2018-01-02 | 2018-01-02 | A kind of textured gas bush(ing) bearing of journal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820001331.0U CN208236901U (en) | 2018-01-02 | 2018-01-02 | A kind of textured gas bush(ing) bearing of journal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208236901U true CN208236901U (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820001331.0U Expired - Fee Related CN208236901U (en) | 2018-01-02 | 2018-01-02 | A kind of textured gas bush(ing) bearing of journal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208236901U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700748A (en) * | 2021-07-20 | 2021-11-26 | 山东科技大学 | Composite textured surface for radial sliding bearing |
| CN114508503A (en) * | 2022-04-19 | 2022-05-17 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
-
2018
- 2018-01-02 CN CN201820001331.0U patent/CN208236901U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700748A (en) * | 2021-07-20 | 2021-11-26 | 山东科技大学 | Composite textured surface for radial sliding bearing |
| CN114508503A (en) * | 2022-04-19 | 2022-05-17 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
| CN114508503B (en) * | 2022-04-19 | 2022-06-21 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 Termination date: 20200102 |