CN2509371Y - Multi-wedge surface plastic composite bush - Google Patents
Multi-wedge surface plastic composite bush Download PDFInfo
- Publication number
- CN2509371Y CN2509371Y CN 01202533 CN01202533U CN2509371Y CN 2509371 Y CN2509371 Y CN 2509371Y CN 01202533 CN01202533 CN 01202533 CN 01202533 U CN01202533 U CN 01202533U CN 2509371 Y CN2509371 Y CN 2509371Y
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- bearing
- millimeter
- weight
- axle journal
- diameter
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- 239000004033 plastic Substances 0.000 title claims abstract description 43
- 229920003023 plastic Polymers 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 230000035876 healing Effects 0.000 claims description 7
- 238000005476 soldering Methods 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 108700041286 delta Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sliding-Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
The composite plastic bearing bush with multiple wedge surfaces belongs to the mechanical centripetal horizontal sliding bearing classification. The structure and the shape of the bearing bush can adapt to the operation problem of the centripetal horizontal sliding bearing. The technical key point is that the upper half bush and the lower half bush are embedded and brazed cylindrical layered composite structures of a metal bush base, an elastic metal wire layer and a plastic surface layer. The lower bearing bush is divided into an oil storage tank, an oil inlet wedge surface, a bearing surface, a stable wedge surface and an oil outlet wedge surface. The diameter of the oil inlet wedge surface is 0.5-3.0 mm larger than that of the bearing surface. The bearing surface is 55 to 135 degrees and has a diameter 0.3 to 1.5 mm larger than the journal. This novel be applied to large-scale entad horizontal slide bearing.
Description
Technical field: multi-scarf plastics composite bearing belongs to mechanical entad horizontal sliding bearing classification.
Background technique: existing plastics composite bearing is to inlay the plane shape composite junction zoarium of soldering by metal watt, elastic metal wire layer and plastics tiling.It at first is applied in the thrust-bearing.Be generalized to again in 1996 in the vertical piecemeal radial bearing and use, obtained good operational effect.Patent ZL96902226.4.Its technical characteristics has been described.1999, the plastics composite bearing was applied in again in the vertical radial bearing and moves successfully.Patent 99101414.6 has been described the feature of this plastics composite bearing.Because the peculiar a lot of premium properties of plastics composite bearing wish to bring into play in horizontal radial plain bearing.Not success is processed also in the calculating of indiscriminately imitating babbit-lined metal that has.Analyze wherein reason discovery, plastic made tile watt temperature before operation is referred to as cold conditions generally at 5-10 ℃.Because friction produces heat, make watt temperature rise during operation to 40-50 ℃ of stable operation, be referred to as hot, 35-40 ℃ of the cold and hot temperature difference.The thermal coefficient of expansion amount 12.5 * 10 of plastics tiling
-5, and the thermal coefficient of expansion of steel tile base is 1.17 * 10
-5Surplus both differ 10 times.Alleviated stress between them though elastic metallic yarn is inlayed brazing layer, it is complicated more that the distortion of tiling but becomes.For example, when the bearing shell internal diameter was 300 millimeters of φ, the circumferential heat expansion of steel tile base only had 0.18 millimeter, and the circumferential heat expansion of plastics tiling is 1.57 millimeters.The 20-40 radian of face sense of rotation and 120-165 radian place produce the millimeter to center of circle direction projection 0.10-0.30 because the level of acting on of elastic metallic yarn is healed up.And existing design standard stipulates that the axle at this place has only the 0.10-0.30 millimeter with the gap width of tiling.This has just hindered entering of lubricant oil, makes axle and watt is in the dry friction state, and dry friction makes the hurried rising of tiling humidity again, has caused bigger distortion again, and so vicious circle has then caused the tile kilning accident to take place.
Summary of the invention: multi-scarf plastics composite bearing technical problem to be solved is that the structure and the shape of bearing shell can adapt to the entad operation of horizontal sliding bearing.
The technological scheme of multi-scarf plastics composite bearing.This bearing shell is made up of top bearing shell and lower bearing.Upper and lower bearing shell relies on the pin bolt tight with becoming drum.The structure of upper and lower bearing shell is watt basic inner arc surface soldering elastic metallic yarn layer at metal, and the elastic metal wire layer is inlayed with the plastic made tile surface layer and is compounded to form cylinder layered composite structure body.The lower shaft tiling is multi-scarf circular shape-oil storage tank, oil-feed wedge surface, weight-bearing surface, stablizes wedge surface, fuel-displaced wedge surface.The oil storage slot wedge is both at the lower bearing face that heals up and is the miter angle setting along sense of rotation and the face of healing up.Apart from healing up about 10 millimeters of face.The oil-feed wedge surface is followed oil storage tank 0 to 60 degree radian setting from the face of healing up to sense of rotation.The cambered surface diameter of oil-feed wedge surface is greater than weight-bearing surface cambered surface diameter 0.5-0.3 millimeter.The center of circle of oil-feed wedge surface should be higher than the center of circle of weight-bearing surface cambered surface.Weight-bearing surface is followed the circular arc of oil-feed wedge surface, spends in 135 degree radians along sense of rotation 55 from healing up, and the weight-bearing surface circular arc center of circle is the center of circle of whole bearing shell.The diameter of weight-bearing surface circular arc is that the axle journal diameter adds increment, and increment is 0.30 to 1.50 millimeter according to the size of axle journal diameter, can select by table 1.
Table 1 plastics weight-bearing surface diameter and increment list unit: millimeter
| Numbering | The axle journal diameter phi | Weight-bearing surface diameter=φ+increment Delta |
| 1 | 125-200 | φ+(0.30～0.45) |
| 2 | 200-400 | φ+(0.45～0.60) |
| 3 | 400-630 | φ+(0.60～0.75) |
| 4 | 630-800 | φ+(0.75～0.90) |
| 5 | 800-1000 | φ+(0.90～1.25) |
| 6 | 1000-1250 | φ+(1.25～1.50) |
When the rotating speed height,, can be calculated as follows the weight-bearing surface diameter again than the big 20-30% of increment of last table for example greater than the good pump circulation time of 10 meter per second oil providing conditions:
Weight-bearing surface diameter=shaft diameter φ+increment Delta (120-130) %
When axle journal is bigger, operation stability requires stable wedge surface to be set when high.The center of circle of stablizing the wedge surface circular arc is lower than weight-bearing surface.Its diameter is less than the weight-bearing surface diameter.Its shape is to be lower than weight-bearing surface 0.10-1.00 millimeter by the sense of rotation section start, is in the crossing pointed shape of convergent crescent moon wedge gradually that forms of weight-bearing surface circular arc elongated surfaces along its termination of sense of rotation.Fuel-displaced wedge surface is then stablized wedge together.Be higher than the center of circle of weight-bearing surface circular arc when not establishing the center of circle of fuel-displaced wedge surface when stablizing wedge surface, its radius of arc is greater than the weight-bearing surface radius of arc.
The beneficial effect of multi-scarf plastics composite bearing.This novel elastic metal layer has resiliently deformable and restore funcitons, can absorb the heat expansion stress between metal tile-base and the plastics tiling.Because the plastics tiling is divided into a plurality of wedge surfaces, thereby alleviated the distortion that plastics Zhou Xiangre splashes and expands and produce.The weight-bearing surface that is provided with between the 0.3-1.5 millimeter, has promptly comprised the heat expansion and the plastic cover thermal expansion projection of axle than the increment of shaft diameter, has left the space that produces oil film again.When bearing shell carries out the transition to when hot from cold conditions, the running state that can influence oil film not because of the heat expansion stress and the distortion of plastic cover.After axle increased with watt gap, in order to ensure the stability of bearing operation, stable wedge surface had play a part to help.So multi-scarf plastics composite bearing can be applied among the horizontal radial plain bearing.
Description of drawings: Fig. 1 is that oil-feed wedge surface and fuel-displaced wedge surface are the axial sectional view of multi-scarf plastics composite bearing of the same center of circle and diameter.Fig. 2 is the lower shaft tiling unfolded drawing of Fig. 1.Fig. 3 is the axial sectional view of multi-scarf plastics composite bearing that stable wedge surface is arranged.Fig. 4 is the lower shaft tiling unfolded drawing of Fig. 3.
Numeral 1 is an axle journal among the figure, its center of fiqure OC, axle journal radius R C.The 2nd, upper half-bearing base inside radius RH.The 3rd, upper half-bearing elastic metallic yarn layer.The 4th, upper half-bearing plastic cover, center of circle OB, radius R B.The 5th, the low brass base.The 6th, following semiaxis elastic metallic yarn layer.The 7th, following semiaxis plastic cover.E-E is for watt analysing and observe the position among the figure, and arrow V indication is the axle journal sense of rotation.M-N is the upper and lower halfliner face that heals up.The MA intrados is an oil storage tank.The AB intrados is the oil-feed wedge surface.The BC intrados is a weight-bearing surface.The CN of Fig. 1 and the DN of Fig. 3 are respectively fuel-displaced wedge surfaces.CD stablizes wedge surface.OA is the center of circle of oil-feed wedge surface, and RA is a radius.OB is the center of circle of load-bearing wedge surface, and RB is the radius of load-bearing wedge surface.OC is the center of circle of axle journal, and RC is the radius of axle journal.OD is the center of circle of stablizing wedge surface, and RD is a radius of stablizing wedge surface.The F of Fig. 4 replenishes oil groove.
Embodiment: the best mode of multi-scarf plastics composite bearing is to adopt the structure stablize wedge surface, consults Fig. 3 and Fig. 4 is described below in conjunction with its mode of execution of example:
The water pilot bearing multi-scarf plastics composite bearing of certain hydraulic generator unit.15000 kilowatts of the powers of the assembling unit, 80 rev/mins of rotating speeds are loaded 280 tons.The radius R C=430 millimeter of its axle journal 1,860 millimeters of diameter 2 * RC=φ.1100 millimeters of bearing shell external diameter φ.Bearing shell is made up of upper and lower two halves bearing shell.The upper and lower bearing shell face MN that heals up.Upper and lower bearing shell pin bolton.Top bearing shell is made up of last watt base 2, elastic metallic yarn layer 3 and plastic layer 4.Lower bearing is by lower bearing base 5, and elastic metallic yarn layer 6 and plastics tiling 7 are formed.Upper and lower watt of base 2 and 5 is No. 30 Cast Steels and directly processes the face MN that heals up, with circle radius RH=438+0.10 millimeter in being lathed after the pin bolton, outside diameter=φ 1100-0.20 millimeter, wide 680 millimeters drum.Soldering elastic metallic yarn layer 3 and 6 on the inner headed face of upper and lower watt of base 2 and 5,5 millimeters of elastic metallic yarn layer thicknesses.Elastic metallic yarn layer 3 and 6 and plastic cover 4 and 7 inlay compound.Form soldering and inlay complex structure body.3 of the plastic cover 4 of top bearing shell and elastic metal layers are inlayed soldering at 80 mm wide places, top bearing shell base inner headed face two ends.The plastic cover 7 of lower bearing and elastic metallic yarn layer 6 are all inlayed soldering with lower bearing base 5 inner headed faces.The surface of lower bearing plastic cover 7 forms the multi-scarf form, and its position and structure are initiated with 0 degree radian by the axle sense of rotation from M, is 180 to spend radians and be arranged in order and be divided into 5 sections wedge surfaces to N: the MA oil storage tank.The cambered surface of MA oil storage tank and the MN face of healing up are miter angle, and the A place heals up identity distance from being 10 millimeters apart from MN, and 1.3 millimeters apart from the axle surface, wide 720 millimeters, the face end stays each 80 millimeters on limit.This face makes the more convenient oil-feed wedge surface that enters of fluid storage.AB oil-feed wedge surface is from the B of A to 55 degree cambered surface position, and its cambered surface center of circle OA is higher than the face MN that heals up, 720 millimeters of this face width degree of its radius R A=431.0+ (021～0.30).AB oil-feed wedge surface and weight-bearing surface circumference are the convergence wedge surface of crescent moon oil film wedge shape.So not only eliminated the thermal stress deformation of plastics, but also helped the formation of oil film at this place.The BC weight-bearing surface is from the C place of B to 135 degree radian.Its cambered surface center of circle OB is how much axle center of bearing shell.Its diameter 2 * RB=860+ (0.90+0.95) millimeter.Gap between this cambered surface and the axle has just in time comprised the thermal distortion and the oil slick thickness of plastic cover.CD stablize wedge surface from C to D 175 the degree radians.This cambered surface center of circle, place OD is lower than the center of circle OB of bearing shell, its cambered surface radius RD=430-(0.83-0.90) millimeter.Import C place is lower than 0.20 millimeter of weight-bearing surface, intersect to D place and weight-bearing surface circumference, like this between CD cambered surface and the axle just the formation crescent moon wedge shape similar to import wedge surface AB restrain wedge surface, the stability that the pressure of this wedge surface generation can retainer shaft moves.The fuel-displaced wedge surface of DN is from D to N, and its shape is identical with MA oil storage tank shape.The surperficial circular arc of top bearing shell plastic cover 4 and BC weight-bearing surface are same cylndrical surface.F among Fig. 4 is the oil groove at weight-bearing surface BC center in the lower bearing unfolded drawing, plays a part to be CD stabilising surface oiling supercharging.20 millimeters of its imports, export 15 millimeters, dark 1 millimeter by dark 2 millimeters.
Claims (2)
1, multi-scarf plastics composite bearing belongs to mechanical entad horizontal sliding bearing classification, it is made up of upper and lower two halves bearing shell, the structure that it is characterized in that upper and lower two halves bearing shell is by metal tile-base soldering elastic metallic yarn layer, and the elastic metallic yarn layer is inlayed the plastics surface layer again and formed cylinder stratiform composite-like; The lower shaft tiling is multi-scarf circular shape-oil storage tank, oil-feed wedge surface, weight-bearing surface, stablize wedge surface and fuel-displaced wedge surface; To 60 degree radians along sense of rotation, its cambered surface center of circle is higher than the center of circle of weight-bearing surface circular arc from the face of healing up in the position of oil-feed wedge, and its cambered surface diameter is greater than weight-bearing surface diameter 0.5-3.0 millimeter; The weight-bearing surface position is 55 to 135 degree radians from the face of healing up along sense of rotation, and its cambered surface center of circle is how much centers of circle of bearing shell, and its diameter is than the big 0.3-1.5 millimeter of axle journal:
A, when axle journal is the 120-200 millimeter, the weight-bearing surface diameter is than the big 0.30-0.45 millimeter of axle journal;
B, when axle journal is the 200-400 millimeter, the weight-bearing surface diameter is than the big 0.45-0.60 millimeter of axle journal;
C, when axle journal is the 400-630 millimeter, the weight-bearing surface diameter is than the big 0.60-0.75 millimeter of axle journal;
D, when axle journal is the 630-800 millimeter, the weight-bearing surface diameter is than the big 0.75-0.90 millimeter of axle journal;
E, when axle journal is the 800-1000 millimeter, the weight-bearing surface diameter is than the big 0.90-1.25 millimeter of axle journal;
F, when axle journal is the 1000-1200 millimeter, the weight-bearing surface diameter is than the big 1.25-1.50 millimeter of axle journal.
2, multi-scarf plastics composite bearing as claimed in claim 1, when it is characterized in that rotating speed surpasses 10 meter per seconds or forced oil-circulation, the diameter of plastics weight-bearing surface is the 120-130% that shaft diameter adds increment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01202533 CN2509371Y (en) | 2001-01-02 | 2001-01-02 | Multi-wedge surface plastic composite bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01202533 CN2509371Y (en) | 2001-01-02 | 2001-01-02 | Multi-wedge surface plastic composite bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509371Y true CN2509371Y (en) | 2002-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01202533 Expired - Fee Related CN2509371Y (en) | 2001-01-02 | 2001-01-02 | Multi-wedge surface plastic composite bush |
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| Country | Link |
|---|---|
| CN (1) | CN2509371Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325812C (en) * | 2003-08-29 | 2007-07-11 | 大丰工业株式会社 | Sliding bearing |
| CN100383422C (en) * | 2004-07-16 | 2008-04-23 | 台达电子工业股份有限公司 | Combined type hydrodynamic bearing device and manufacturing method thereof |
| CN102290906A (en) * | 2011-08-13 | 2011-12-21 | 无锡杰尔压缩机有限公司 | Tilting-pad radial bearing for high speed motor |
| CN102290907A (en) * | 2011-08-13 | 2011-12-21 | 无锡杰尔压缩机有限公司 | Supporting structure for high speed motor rotor |
| CN102322383A (en) * | 2011-06-11 | 2012-01-18 | 孙晶 | Radial metallic-plastic bearing bush of bearing of horizontal bulb tubular water turbine generator |
| CN103075425A (en) * | 2012-08-27 | 2013-05-01 | 浙江富春江水电设备股份有限公司 | Radial sliding bearing |
| CN103557232A (en) * | 2013-10-22 | 2014-02-05 | 申科滑动轴承股份有限公司 | Method for increasing bearing capacity of water lubrication bearing and corresponding water lubrication bearing |
| CN103775501A (en) * | 2013-12-16 | 2014-05-07 | 国网新源水电有限公司新安江水力发电厂 | Repairation control process of surface roughness of thrust bearing elastic metal plastic tile |
| CN105673696A (en) * | 2014-11-17 | 2016-06-15 | 孙守驯 | Elastic metal plastic bearing pad |
-
2001
- 2001-01-02 CN CN 01202533 patent/CN2509371Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325812C (en) * | 2003-08-29 | 2007-07-11 | 大丰工业株式会社 | Sliding bearing |
| CN100383422C (en) * | 2004-07-16 | 2008-04-23 | 台达电子工业股份有限公司 | Combined type hydrodynamic bearing device and manufacturing method thereof |
| CN102322383A (en) * | 2011-06-11 | 2012-01-18 | 孙晶 | Radial metallic-plastic bearing bush of bearing of horizontal bulb tubular water turbine generator |
| CN102290906A (en) * | 2011-08-13 | 2011-12-21 | 无锡杰尔压缩机有限公司 | Tilting-pad radial bearing for high speed motor |
| CN102290907A (en) * | 2011-08-13 | 2011-12-21 | 无锡杰尔压缩机有限公司 | Supporting structure for high speed motor rotor |
| CN103075425A (en) * | 2012-08-27 | 2013-05-01 | 浙江富春江水电设备股份有限公司 | Radial sliding bearing |
| CN103557232A (en) * | 2013-10-22 | 2014-02-05 | 申科滑动轴承股份有限公司 | Method for increasing bearing capacity of water lubrication bearing and corresponding water lubrication bearing |
| CN103557232B (en) * | 2013-10-22 | 2015-09-09 | 申科滑动轴承股份有限公司 | A kind of improve water lubriucated bearing bearing capacity method and corresponding water lubriucated bearing |
| CN103775501A (en) * | 2013-12-16 | 2014-05-07 | 国网新源水电有限公司新安江水力发电厂 | Repairation control process of surface roughness of thrust bearing elastic metal plastic tile |
| CN103775501B (en) * | 2013-12-16 | 2016-03-23 | 国家电网公司 | Thrust-bearing elastic metal plastic tile tiling roughness repairs Controlling Technology |
| CN105673696A (en) * | 2014-11-17 | 2016-06-15 | 孙守驯 | Elastic metal plastic bearing pad |
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| CF01 | Termination of patent right due to non-payment of annual fee |