CN102322476B - Tilting-pad water-lubricated rubber alloy bearing - Google Patents
Tilting-pad water-lubricated rubber alloy bearing Download PDFInfo
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- CN102322476B CN102322476B CN2011102777919A CN201110277791A CN102322476B CN 102322476 B CN102322476 B CN 102322476B CN 2011102777919 A CN2011102777919 A CN 2011102777919A CN 201110277791 A CN201110277791 A CN 201110277791A CN 102322476 B CN102322476 B CN 102322476B
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Abstract
The invention discloses a tilting-pad water-lubricated rubber alloy bearing, wherein a bearing pad adopts a tilting type, and the structure allows the water-lubricated rubber alloy bearing to form a more stable wedge-shaped pressure water film; during operation, the tilting pad can adjust a rotor center automatically with the differences of rotating speed, load, and bearing water film thickness; a plurality of water wedges are formed around a shaft journal; the suspension operation of the shaft is realized by the wedge-shaped pressure water film; the force condition of the shaft is improved; the bearing is not easy to wear; and the energy consumption is reduced; when the shaft is affected by external disturbance, the tilting pad can swing around a fulcrum with the disturbance of the shaft; new balance is reached rapidly, and stable operation of the shaft is recovered rapidly; the operation stability of the bearing is effectively improved; therefore, the invention can effectively prolong the service life of the water-lubricated rubber alloy bearing, reduce the vibration and noise of bearing operation, and save using cost.
Description
Technical field
The present invention relates to a kind of bearing, particularly a kind of water lubricating rubber alloy bearing.
Background technique
Mechanical transmission is the various friction pairs in the marine propuision system particularly, often form with metal construction, with mineral oil as lubricant medium.Expended strategic resources such as a large amount of mineral oil and noble metal,, need seal, made its structure quite complicated in order to prevent oil leakage, be difficult to reduce or reduce that various mechanical transmission inevitably rub, wear and tear, vibration, impact, noise, idle energy consumption.In transmission system, still exist poor reliability and life-span than problems such as weak points, particularly have the situation that is on the rise because of seal leakage oil pollution water of river, lake and sea environment.
At shipbuilding industry; Statistics according to relevant department of ship inspection office shows, push boat ship that power is 880kW only, and the lubricant oil that its propulsion system every year is leaked by stern tube shaft is more than 3 tons; In reservoir area of Three Gorges and Yangtze river basin navigation, adopt the boats and ships of oil-lubricated bearing system to amount to more than 10 ten thousand; And every ship average year oil leak amount is about 2 tons, has not only greatly wasted lube stock, also the rivers,lakes and seas environment has been caused very serious pollution simultaneously.At present, the industrially developed country such as the U.S. have made laws and have forbidden that the boats and ships that navigate by water at endorheism use oil-lubricated bearing in the west, with the protection and the resource of purifying waste water.If the boats and ships of river valley continued to use oil-lubricated bearing in China also allowed to operate in, certainly will more seriously destroy the whole ecological environment to the oil pollution that water resources caused so, thereby injure the human existence condition.Therefore; Go to research and develop pollution-free and have the novel bearing system of vibration damping, noise reduction, wear-resisting, reliable, efficient, energy-conservation, effect such as bearing capacity is strong, life of equipment is long; And apply; To solve rivers,lakes and seas severe environmental pollution problem, should this be the task of top priority of shipping industry, inland water transport.
In the existing technology, the bearing shell of water lubricating rubber alloy bearing is that to process one fixed with axle housing, and in the operation process, because stressed and moment unbalance, the whirling motion of certain frequency is being done in the axle center, thereby produces bigger friction, wearing and tearing, vibration and noise.
Therefore, need improve, make the axle center can steady running, reduce wearing and tearing, vibration and noise, prolong the working life of water lubricating rubber alloy bearing, and practice thrift user cost existing water lubricating rubber alloy bearing.
Summary of the invention
In view of this; The present invention provides a kind of watt formula water lubricating rubber alloy bearing that inclines; The bearing shell of this water lubricating rubber alloy bearing can be swung with the disturbance of axle, and fast quick-recovery shaft balancing steady running reduces wearing and tearing, vibration and noise; Reach the working life that prolongs water lubricating rubber alloy bearing, and practice thrift the purpose of user cost.
Watt formula water lubricating rubber alloy bearing that inclines of the present invention; Comprise axle housing, serve as a contrast along circumferentially being uniformly distributed in the bearing shell in the axle housing and being fixed in the inboard rubber alloy of bearing shell; Said axle housing inwall is set with to be arranged and the circumferential equally distributed supporting bar in edge vertically; Said supporting bar is corresponding one by one with bearing shell; The top cross section of supporting bar is circular, and said bearing shell arranged outside cross section is circular axial notch, and the top clearance cooperation of supporting bar embeds the interior bearing shell that forms of groove can be around inclined to the structure of supporting bar top swing.
Further; Be set with the press strip that cross section is the T type between the adjacent bearing shell; Two laterally projecting positions of press strip head form the radially spacing of adjacent two bearing shell ends respectively, surround the swing space of bearing shell between axle, press strip and the axle housing inwall that cooperates with said water lubricating rubber alloy bearing jointly;
Further, the longitudinal section of the longitudinal section, top of said supporting bar and the groove that is arranged at the bearing shell outside is arc to axle housing shaft axis protrusion;
Further; Said rubber alloy lining inboard is provided with circumferentially equally distributed axial straight trough of 1～3 edge, and the rubber alloy lining inner surface when rubber alloy lining inner surface between straight trough and the press strip and straight trough quantity are 2～3 between straight trough and the straight trough is a bearing working face;
Further, the cross section of said bearing working face is a concave arc shape, and straight trough and rubber alloy serve as a contrast along two circumferential sides all and rounding off between the working surface;
Further, the bottom transverse cross section of said supporting bar is a swallow-tail form, has on the said axle housing and the corresponding dovetail groove in supporting bar bottom, and the supporting bar bottom embeds in the dovetail groove;
Further, the radius of said bearing working face is R1, and the radius of the axle that cooperates with said bearing is R2, and the gap between said axle and the bearing working face is c, and the ratio between R1-R2 and the c is 1.2～3;
Further, the field angle of said bearing shell is β 1, and it is β 2 to the subtended angle between the supporting bar top center that said bearing shell plays initial line, β 2/ β 1=0.58～0.61;
Further, the groove internal surface in said supporting bar outer surface of cupular part and the bearing shell outside is coated with solid lubricant coating;
Further, when said bearing shell is swung, do not contact axle housing and press strip in the swing space.
Beneficial effect of the present invention: watt formula water lubricating rubber alloy bearing that inclines of the present invention; Bearing shell adopts tilting-type; This structure can make water lubricating rubber alloy bearing form more stable wedge shape pressure moisture film, and the bearing shell that can incline can be adjusted rotor center with the difference of rotating speed, load and bearing water film thickness automatically when work, around axle journal, form a plurality of water wedges; Make axle suspension float work through wedge shape pressure moisture film; Improve the stressing conditions of axle, made bearing be not easy wearing and tearing, also reduced energy consumption simultaneously; When axle received external interference, the bearing shell that can incline can will soon reach new balance along with the disturbance of axle around a spot wobble, makes a fast quick-recovery steady running, effectively raises the operation stability of bearing; Therefore, the present invention can be effectively along the working life of long water lubricating rubber alloy bearing, and vibration and noise when reducing the bearing operation are practiced thrift user cost.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A revolved sectional view of Fig. 1;
Fig. 3 is the structural representation of supporting bar;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the I place partial enlarged drawing among Fig. 1.
Embodiment
Below will combine accompanying drawing that the present invention is elaborated; As shown in the figure: watt formula water lubricating rubber alloy bearing that inclines of present embodiment, comprise axle housing 1, serve as a contrast 3 along circumferentially being uniformly distributed in the bearing shell 2 in the axle housing 1 and being fixed in bearing shell 2 inboard rubber alloys, the quantity of general bearing shell is more than 3; Present embodiment adopts 5 bearing shells; Said axle housing 1 inwall is set with arranges vertically and the circumferential equally distributed supporting bar 4 in edge that said supporting bar 4 is corresponding one by one with bearing shell 2, and the top cross section of supporting bar 4 is circular; Said bearing shell 2 arranged outside cross sections are circular axial notch 2a; The top clearance of supporting bar 4 cooperates inclined to the structure that formation bearing shell 2 can be swung around supporting bar 4 tops in the embedding groove 2a, and the bearing shell that can incline can be adjusted rotor center with the difference of rotating speed, load and bearing water film thickness automatically when work, form a plurality of water wedges all around at axle journal; Make axle suspension float work through wedge shape pressure moisture film; Improve the stressing conditions of axle, made bearing be not easy wearing and tearing, also reduced energy consumption simultaneously; When axle received external interference, the bearing shell that can incline can will soon reach new balance along with the disturbance of axle around a spot wobble; Make a fast quick-recovery steady running; Effectively raise the operation stability of bearing, therefore, this structure can effectively prolong the working life of water lubricating rubber alloy bearing; Vibration and noise when reducing the bearing operation are practiced thrift user cost.
Further improvement as technique scheme; Being set with cross section between the adjacent bearing shell 2 is the press strip 5 of T type, and two laterally projecting positions of press strip 5 heads form the radially spacing of adjacent two bearing shell 2 ends respectively, surrounds the swing space of bearing shell 2 between axle 6, press strip 5 and axle housing 1 inwall that cooperates with said water lubricating rubber alloy bearing jointly; Under the situation of bearing proper functioning; Bearing shell does not contact with press strip 5 with axle housing 1, and spacing through press strip both can guarantee that bearing shell did not depart from its swing position under the non-normal working situation; Simultaneously, also make bearing bearing shell when assembling can not increase assembling difficulty because there not being spacing dropping.
Further improvement as technique scheme; The longitudinal section, top of said supporting bar 4 and the longitudinal section that is arranged at the groove 2a in bearing shell 2 outsides are arc to axle housing 1 shaft axis protrusion; Can make bearing shell on axial direction, do small swing, thereby adapt to the bending deflection of coaxiality error with the axle of bearing, bearing shell produces axial float in the time of can effectively preventing bearing working simultaneously; Improve the stability of bearing working, reduce wearing and tearing, vibration and noise.
Further improvement as technique scheme; Said rubber alloy serves as a contrast 3 inboards circumferentially equally distributed axial straight trough 3a of 1～3 edge is set, and 1 straight trough is set in the present embodiment, and it is bearing working face that the rubber alloy the when rubber alloy between straight trough 3a and the press strip 5 serves as a contrast 3 inner surfaces and straight trough 3a quantity and is 2～3 between straight trough and the straight trough serves as a contrast 3 inner surfaces; Through straight trough 3a the rubber alloy lining is divided into a plurality of working surfaces; So that on single tile fragment, also form more wedge shape moisture films, make stressed even more, the more stable work of tile fragment, further improve the stressing conditions of axle; Make bearing be not easy wearing and tearing, also cut down the consumption of energy simultaneously.
Further improvement as technique scheme; The cross section of said bearing working face is a concave arc shape; Straight trough 3a and rubber alloy lining 3 is rounding off all and between the working surface along two circumferential sides; The silt and the impurity that help getting into working surface are excreted in the straight trough, thereby help reducing the wearing and tearing of working surface, in addition rubber alloy lining 3 along two circumferential sides rounding off all and between the working surface; Make the bearing shell ingress that one section convergence wedge shape arranged, this structure can prevent " unloading " or underloading the stuck or reversing of bearing shell and the tile kilning that take place to rub.
Further improvement as technique scheme; The bottom transverse cross section of said supporting bar 4 is a swallow-tail form, has on the said axle housing 1 and the corresponding dovetail groove in supporting bar 4 bottoms, and supporting bar 4 bottoms embed in the dovetail groove; Structure through the swallow-tail form draw-in groove fixes supporting bar, is easy to processing and dismounting.
Further improvement as technique scheme; The radius of said bearing working face is R1, and the radius of the axle 6 that cooperates with said bearing is R2, and the gap between said axle 6 and the bearing working face is c; Ratio between R1-R2 (R1 and R2's is poor) and the c is 1.2～3; It is eccentric in advance that bearing promptly is set, and all bearing shells did not all have the negative bias heart with respect to the axle center when axle was worked under work loads, thereby prevent that " quiet unstability (tile fragment constantly swings to and fro) " phenomenon from occurring.In addition, suitable preparatory off-centre is set, can also improves the bearing capacity of bearing.
Further improvement as technique scheme; The field angle of said bearing shell 2 is β 1; 2 initial lines of said bearing shell are β 2 to the subtended angle between supporting bar 4 top center, and circumferential position parameter beta 2/ β 1 of fulcrum is one of major parameter of tilting-pad bearing design, and it is fairly obvious to the carrying and the dynamic characteristic influence of bearing; General β 2/ β 1=0.58～0.61; Should follow according to the Elongation of tile fragment and choose best fl 2/ β 1 value, make the position of the fulcrum of tile fragment best, can effectively improve the bearing capacity and the dynamic characteristic of bearing; The elasticity of fulcrum directly influences the rigidity and the damping of a moisture film in addition, thereby influences quiet, dynamic performance, be designed to rigidity or flexibility to fulcrum according to different applications.
As the further improvement of technique scheme, the groove 2a internal surface in said supporting bar 4 outer surface of cupular part and bearing shell 2 outsides is coated with solid lubricant coating, like MoS
2Deng, reduce the friction that bearing shell is produced when supporting bar rotates, reduce wearing and tearing, vibration and noise.
As the further improvement of technique scheme, when carrying out structural design, when requiring said bearing shell 2 in the swing space, to swing, do not contact axle housing 1 and press strip 5, parameters such as the vibration when further reducing bearing working, noise.
The tilting pad number of watt formula water lubricating rubber alloy bearing that inclines of the present invention, straight trough number, R1-R2/c value and β 2/ β 1 value are chosen with reference to following table with the diameter of axle contrast of axle and are carried out:
The selection of parameter table of comparisons
Explanation is at last; Above embodiment is only unrestricted in order to technological scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technological scheme of the present invention; And not breaking away from the aim and the scope of technological scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. watt formula water lubricating rubber alloy bearing that can incline; Comprise axle housing (1), serve as a contrast (3) along circumferentially being uniformly distributed in the bearing shell (2) in the axle housing (1) and being fixed in the inboard rubber alloy of bearing shell (2); It is characterized in that: said axle housing (1) inwall is set with to be arranged and edge circumferential equally distributed supporting bar (4) vertically; Said supporting bar (4) is corresponding one by one with bearing shell (2); The top cross section of supporting bar (4) is circular; Said bearing shell (2) arranged outside cross section is circular axial notch (2a), and the top clearance of supporting bar (4) cooperates the interior bearing shell (2) that forms of embedding groove (2a) to be set with the press strip that cross section is the T type (5) between the adjacent bearing shell (2) around inclined to the structure of supporting bar (4) top swing; Two laterally projecting positions of press strip (5) head form the radially spacing of adjacent two bearing shells (2) end respectively; Surround the swing space of bearing shell (2) between axle (6), press strip (5) and axle housing (1) inwall that cooperates with said water lubricating rubber alloy bearing jointly, when said bearing shell (2) is swung, do not contact axle housing (1) and press strip (5) in the swing space.
2. watt formula water lubricating rubber alloy bearing that inclines according to claim 1 is characterized in that: the longitudinal section of the longitudinal section, top of said supporting bar (4) and the groove (2a) that is arranged at bearing shell (2) outside is arc to axle housing (1) shaft axis protrusion.
3. watt formula water lubricating rubber alloy bearing that inclines according to claim 2; It is characterized in that: said rubber alloy lining (3) inboard is provided with circumferentially equally distributed axial straight trough (3a) of 1～3 edge, and rubber alloy lining (3) inner surface when rubber alloy lining (3) inner surface between straight trough (3a) and the press strip (5) and straight trough (3a) quantity are 2～3 between straight trough and the straight trough is a bearing working face.
4. watt formula water lubricating rubber alloy bearing that inclines according to claim 3, it is characterized in that: the cross section of said bearing working face is a concave arc shape, straight trough (3a) and rubber alloy lining (3) is along two circumferential sides all and excessively slick and sly between the working surface.
5. watt formula water lubricating rubber alloy bearing that inclines according to claim 4; It is characterized in that: the bottom transverse cross section of said supporting bar (4) is a swallow-tail form; Have on the said axle housing (1) and the corresponding dovetail groove in supporting bar (4) bottom, supporting bar (4) bottom embeds in the dovetail groove.
6. watt formula water lubricating rubber alloy bearing that inclines according to claim 5; It is characterized in that: the radius of said bearing working face is R1; The radius of the axle (6) that cooperates with said bearing is R2; Gap between said axle (6) and the bearing working face is c, and the ratio between R1-R2 and the c is 1.2～3.
7. watt formula water lubricating rubber alloy bearing that inclines according to claim 6; It is characterized in that: the field angle of said bearing shell (2) is β 1; It is β 2 to the subtended angle between supporting bar (4) top center that said bearing shell (2) plays initial line, β 2/ β 1=0.58～0.61.
8. watt formula water lubricating rubber alloy bearing that inclines according to claim 7 is characterized in that: groove (2a) internal surface in said supporting bar (4) outer surface of cupular part and bearing shell (2) outside is coated with solid lubricant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102777919A CN102322476B (en) | 2011-09-19 | 2011-09-19 | Tilting-pad water-lubricated rubber alloy bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102777919A CN102322476B (en) | 2011-09-19 | 2011-09-19 | Tilting-pad water-lubricated rubber alloy bearing |
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| Publication Number | Publication Date |
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| CN102322476A CN102322476A (en) | 2012-01-18 |
| CN102322476B true CN102322476B (en) | 2012-10-31 |
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| CN2011102777919A Active CN102322476B (en) | 2011-09-19 | 2011-09-19 | Tilting-pad water-lubricated rubber alloy bearing |
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| CN102619876A (en) * | 2012-03-26 | 2012-08-01 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing with groove on upper bush and spring on bush back |
| CN103953644A (en) * | 2014-05-21 | 2014-07-30 | 无锡杰尔压缩机有限公司 | Radially adjustable tiltable pad bearing |
| CN104074871B (en) * | 2014-06-06 | 2016-05-11 | 中国人民解放军海军工程大学 | A kind of boats and ships Water Lubricated Stern Tube Bearing System that possesses automatic even year function |
| CN104405768A (en) * | 2014-11-13 | 2015-03-11 | 重庆海山橡塑化工有限公司 | Rubber bearing |
| JP2016098888A (en) * | 2014-11-20 | 2016-05-30 | 三菱重工業株式会社 | Tilting pad bearing |
| CN105134800A (en) * | 2015-08-11 | 2015-12-09 | 哈尔滨汽轮机厂有限责任公司 | Assembly method for tilt pad bearing of steam turbine |
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| CN107202067A (en) * | 2017-05-29 | 2017-09-26 | 苏州固特斯电子科技有限公司 | A kind of bushing |
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| CN110107595B (en) * | 2019-04-11 | 2020-07-28 | 西安理工大学 | Dynamic and static pressure thrust bearing jointly borne by tilting pad and static pressure oil cavity |
| CN110296146B (en) * | 2019-06-27 | 2021-03-30 | 武汉理工大学 | Broadband damping vibration attenuation modularization water lubricated bearing |
| CN112228527B (en) * | 2020-10-15 | 2022-05-17 | 重庆大学 | Gear assembly with variable tooth thickness |
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| DE2920344C2 (en) * | 1979-05-19 | 1984-12-13 | Glyco-Maschinenbau GmbH, 4300 Essen | Sealing ring arrangement for a radial tilting segment plain bearing |
| JPS56141866A (en) * | 1980-04-04 | 1981-11-05 | Toyota Motor Corp | Thrust bearing of rotary atomizing electrostatic coating device |
| JPH0344750A (en) * | 1989-07-12 | 1991-02-26 | Toshiba Corp | Message file protection system |
| JPH09144750A (en) * | 1995-11-24 | 1997-06-03 | Kobe Steel Ltd | Pad type journal bearing |
| JP5021576B2 (en) * | 2008-06-30 | 2012-09-12 | 日立三菱水力株式会社 | Pad type bearing device and horizontal axis turbine |
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