CN102062145A - Squeeze film damper bearing - Google Patents
Squeeze film damper bearing Download PDFInfo
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- CN102062145A CN102062145A CN200910223742XA CN200910223742A CN102062145A CN 102062145 A CN102062145 A CN 102062145A CN 200910223742X A CN200910223742X A CN 200910223742XA CN 200910223742 A CN200910223742 A CN 200910223742A CN 102062145 A CN102062145 A CN 102062145A
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- bearing
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- squeeze film
- film damper
- peripheral surface
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Abstract
The invention provides a squeeze film damper bearing, which comprises a hollow cylindrical bearing body, wherein the bearing body comprises outer bearing rings and inner bearing rings; an annular groove is formed on the inner ring surface of the inner bearing ring on at least one end part of the bearing body, and is outwards extended axially from the inner ring surface and radially along the inner ring; moreover, oil discharge grooves used for providing channels for lubricating oil to flow out of the inner ring surface are formed along an axial direction of the bearing body on the inner ring surface. The squeeze film damper bearing provided by the embodiment of the invention reduces a contact area between a main shaft and the inner bearing ring at the same time of ensuring an effective bearing area, and can achieve reduction in sensitivity to oil temperature and an improvement on the working stability. Moreover, the oil discharge grooves are formed on the inner ring surfaces so as to increase the circulation speed of the lubricating oil and the utilization rate of the lubricating oil, further improve the heat removal and temperature reduction capability of the bearing and achieve a better heat removal effect.
Description
Technical field
The present invention relates to technology for Turbocharger Manufacturing and technical field of bearings, relate to a kind of squeeze film damper bearing, relate in particular to the novel squeeze film damper bearing of a kind of internal support formula turbosupercharger.
Background technique
Bearing is the most accurate in the turbosupercharger, most key part, and bearing plays important effect to working stability, the durability of total efficiency, reliability and the motor (for example diesel engine, petrol engine etc.) of turbosupercharger.
At present because requirements such as diesel engine has efficiently, reliable and compact structures, so most of producers generally are provided with the internal support turbosupercharger in diesel engine.Squeeze film damper bearing in the existing internal support turbosupercharger because oil film plays certain damping shock absorption effect between bearing outer ring and the bearing support, therefore is by increasing bearing damp, to improve the stability of rotor mostly.But,, just to increase bearing if will increase bearing damp; Therefore when increasing bearing, bearing inner race and the area of contact that is arranged between the main shaft in the described bearing also will increase thereupon; And main shaft is high speed rotating in bearing, will can cause the rising of temperature in the bearing because of producing a large amount of heats with the mutual friction of bearing inner race in the process of main axis rotation.Because most of frictional heat will be taken away by lubricant oil, rule of thumb as can be known, when the temperature of the lubricant oil in the bearing surpassed 120 ℃, very likely the scaling loss bearing caused the damage of internal support turbosupercharger, and working stability is relatively poor.In addition, squeeze film damper bearing of the prior art is had relatively high expectations to the grease of lubricant oil, and does not have dirt eliminating function, even lubricant oil after filtering, also can carry fine impurities and enter bearing, and the Internal and external cycle of bearing scratched, long-term accumulation progressively will cause the inefficacy of this bearing.
Summary of the invention
Technical problem to be solved by this invention is, a kind of squeeze film damper bearing is provided, in order to solve in the prior art when increasing bearing and improve rotor stability, owing to also increasing thereupon, the area of contact between bearing inner race and the main shaft causes producing in the bearing a large amount of heats, cause damage of bearings, defectives such as bearing working poor stability improve bearing work stability.
The embodiment of the invention provides a kind of squeeze film damper bearing, comprise the bearing main body that is hollow cylinder, described bearing main body comprises bearing outer ring and bearing inner race, on at least one end position of the described bearing main body inner peripheral surface place, described bearing inner race, also be provided with from described inner peripheral surface axially outwards, along the circular groove of described inner ring radial expansion.
The squeeze film damper bearing that the embodiment of the invention provides, by circular groove is set, reduce the area of contact of main shaft and bearing inner race, when guaranteeing effective bearing area on inner peripheral surface, can reduce the receptance of bearing, improve bearing work stability the oil temperature.
In order to improve the speed of circulation of lubricant oil in the bearing, and make bearing have dirt eliminating function, aforesaid squeeze film damper bearing, wherein, in described inner peripheral surface and along on the axial direction of described bearing main body, also be provided with at least one, be used to lubricant oil to flow out the oil-discharge trough that described inner peripheral surface provides passage.
Aforesaid squeeze film damper bearing wherein, also is provided with oil groove at the middle part of described inner peripheral surface, and described oil groove is at least one, and described oil-discharge trough is communicated with described oil groove.
Aforesaid squeeze film damper bearing, wherein, described oil groove that is interconnected and described oil-discharge trough respectively are three or four, and are symmetrical arranged on described inner peripheral surface.
Aforesaid squeeze film damper bearing wherein, also is provided with oil groove at the middle part of described inner peripheral surface, and described oil groove is at least one, and described oil-discharge trough and described oil groove be arranged in parallel.
Aforesaid squeeze film damper bearing, wherein, the cylindrical or frustoconic shape of described circular groove.
Aforesaid squeeze film damper bearing wherein, along on the radial direction of described bearing main body, offers the oil inlet hole that is communicated with described oil groove by the surperficial extremely described inner peripheral surface in the outer ring of described bearing outer ring.
Aforesaid squeeze film damper bearing wherein, on the surface, outer ring of described bearing outer ring, is provided with the fixed groove that is used for fixing described bearing main body.
The squeeze film damper bearing that the embodiment of the invention provides is by being provided with oil-discharge trough on inner peripheral surface, lubricant oil can flow out bearing inner race fast by the formed passage of oil-discharge trough, has accelerated the speed of circulation of lubricant oil, improves the utilization ratio of lubricant oil; Even more important, owing to carry away by lubricant oil because of the heat major part of friction generation in the bearing, so after the quickening of the velocity of liquid assets of lubricant oil, the ability of the heat elimination and cooling of bearing has obtained further raising, the heat extraction effect is better.
Description of drawings
Fig. 1 is a squeeze film damper bearing structure schematic representation of the present invention.
Fig. 2 is the sectional view of A-A direction among Fig. 1.
Fig. 3 is the sectional view of B-B direction among Fig. 1.
Reference character:
Bearing main body-1; Bearing outer ring-11; Bearing inner race-12;
Surface, outer ring-111; Inner peripheral surface-121; Circular groove-122;
Oil groove-123; Oil-discharge trough-124; Oil inlet hole-112;
Fixed groove-113.
Embodiment
For the purpose, technological scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who is obtained under the creative work prerequisite.
Various embodiments of the present invention are at existing in the prior art, the squeeze film damper bearing increases the contradiction that causes between the bearing temperature height by increase bearing maintenance rotor stability with because of bearing, and cause the defectives such as Internal and external cycle scuffing of squeeze film damper bearing owing to mixing fine impurities in the lubricant oil in the prior art, the i.e. inner peripheral surface by reducing squeeze film damper bearing middle (center) bearing inner ring and be arranged on area of contact between the main shaft in the described bearing inner race of a solution is provided, to reduce a large amount of heats that produce in the bearing that causes because of friction, reduce the temperature in the bearing, improve bearing work stability.In addition, for the speed of circulation of quickening lubricant oil and can take away well cuts by lubricant oil, can also on the inner peripheral surface of bearing, oil-discharge trough be set in the various embodiments of the present invention, think that lubricant oil provides the passage of circulation, and have dirt eliminating function concurrently, accelerate the heat dissipation rate of bearing, improved the working life of bearing.
Fig. 1 is a squeeze film damper bearing structure schematic representation of the present invention, Fig. 2 is the sectional view of A-A direction among Fig. 1, Fig. 3 is the sectional view of B-B direction among Fig. 1, as Fig. 1, Fig. 2 and shown in Figure 3, this squeeze film damper bearing (hereinafter to be referred as: bearing) comprise bearing main body 1, this bearing main body 1 is a hollow cylinder, comprises bearing outer ring 11 and bearing inner race 12, and promptly bearing outer ring 11 and bearing inner race 12 are enclosed to form a hollow cylinder; Bearing outer ring 11 has surface, outer ring 111, and bearing inner race 12 has inner peripheral surface 121, and the inner peripheral surface 121 of bearing inner race 12 be provided with from inner peripheral surface 121 axially outwards, along the circular groove 122 of described bearing inner race 12 radial expansion.This circular groove 122 is arranged on the end position place of bearing main body 1, be that end, the inner peripheral surface 121 of bearing main body 1 is provided with groove and is provided with around bearing main body one week of 1 axle center, that is to say that the end with bearing inner race 12 is provided with chamfering, make bearing inner race 12 increase at the opening of the end of bearing main body 1.
Because the inner peripheral surface 121 of bearing inner race 12 will be in contact with one another with the main shaft that is arranged in the bearing main body 1, and main shaft is high speed rotating in bearing inner race 12, therefore the loaded area of 121 pairs of main shafts of inner peripheral surface promptly is the area of contact with main shaft, in the present embodiment by circular groove 122 is set on inner peripheral surface 121, make main shaft on the end position of bearing main body 1, reduce with the area of contact of inner peripheral surface 121, therefore the friction between main shaft and the bearing inner race 12 is also just corresponding reduces, the heat that generates because of friction also just reduces thereupon, temperature in the bearing main body 1 just will reduce like this, and bearing work stability has also just improved accordingly.
Inner peripheral surface 121 is provided with circular groove 122, can be the arbitrary end setting at bearing main body 1, also can be all to be provided with at the two ends of bearing main body 1, with the area of contact of further minimizing main shaft and bearing inner race 12, the generation of the heat of reducing friction.
The embodiment of the invention reduces the area of contact of main shaft and bearing inner race by circular groove is set on inner peripheral surface, when guaranteeing effective bearing area, can reduce the receptance of bearing to the oil temperature, improves bearing work stability.
Further, being provided with of circular groove can be according to actual conditions, and by reduce the area of internal support in the end of bearing inner race chamfering or other forms, circular groove can be cylindrical like this, or be frustoconic shape etc.Wherein, the angle that is between the axis of the side of circular groove of frustoconic shape and bearing main body is α, wherein 15 °≤α＜90 °.The height of circular groove can be known in the following manner, the width value along the axial direction of bearing main body of bearing is deducted by after calculating the optimum width value that obtains, the width value of inner peripheral surface on that acquisition should be removed, the bearing inner race, this width value can mean allocation arrive two ends, also can for example distribute 2: 7 etc. according to other allocation proportions, even the circular groove of width for this numerical value can only at one end be set, and the other end is kept intact or the like.
In addition as shown in the figure, middle part in inner peripheral surface 121 also is provided with oil groove 123, this oil groove 123 is used to store lubricant oil, and provides lubricant oil during high speed rotating on the surface of contact between main shaft and the inner peripheral surface 121 when main shaft in bearing main body 1, plays lubrication.And this oil groove 123 generally is arranged on the medium position of inner peripheral surface 121, and promptly the two ends of oil groove 123 do not extend to the two ends of bearing inner race 12, and oil groove 123 is to offer along the axial direction of bearing main body 1.This oil groove 123 can be provided with one or more according to demand.
On the basis of the foregoing description, on inner peripheral surface 121, also be provided with oil-discharge trough 124, this oil-discharge trough 124 is along the axial direction setting of bearing main body 1, being used to lubricant oil flows out inner peripheral surface 121 passage is provided, that is to say that oil-discharge trough 124 is that axial direction at bearing main body 1 runs through in the bearing inner race 12, promptly the port of oil-discharge trough 124 is arranged on the circular groove 122.And the oil-discharge trough of varying number can be set according to demand, and can be provided with one or morely, and can be provided with according to the geometric parameter of actual conditions to dump tank.
Present embodiment is by being provided with oil-discharge trough on inner peripheral surface, lubricant oil can flow out bearing inner race fast by the formed passage of oil-discharge trough, has accelerated the speed of circulation of lubricant oil, improves the utilization ratio of lubricant oil; Even more important, owing to carry away by lubricant oil because of the heat major part of friction generation in the bearing, so after the quickening of the velocity of liquid assets of lubricant oil, the ability of the heat elimination and cooling of bearing has obtained further raising, the heat extraction effect is better.
And because the gap between main shaft and the inner peripheral surface is very narrow and small, therefore the impurity that is mixed in the lubricant oil just can't be discharged bearing inner race via lubricant oil; By oil-discharge trough is set, the impurity that is mixed in the lubricant oil just can be taken bearing inner race out of by the lubricated oil of this passage in this example, reduces the accumulation of impurity in bearing, reduces the damage probability of impurity to bearing, the working life of having improved bearing.
In the above-described embodiments, as shown in the figure, oil-discharge trough 124 can be communicated with oil groove 123, and processing technology is simple like this.Certainly, oil-discharge trough 124 also can be arranged in parallel with oil groove 123, not be communicated with oil groove 123, promptly offers oil-discharge trough 124 and oil groove 123 on the inner peripheral surface 121 respectively.
As shown in Figure 3, inner peripheral surface 121 is provided with three oil grooves 123, three 124, three oil-discharge troughs 124 of oil-discharge trough and is communicated with three oil grooves 123 of correspondence respectively, and is symmetrical arranged on inner peripheral surface 121.The quantity of oil-discharge trough can be arranged to three or four or the like according to the quantity of oil groove, to meet the different needs.
In the above-described embodiments, on bearing main body 1, also be provided with oil inlet hole 112, this oil inlet hole 112 be along bearing main body 1 radial direction, offer by surface, outer ring 111 to the inner peripheral surface 121 of bearing outer ring 11, and be communicated with oil groove 123.Can in oil groove 123, import lubricant oil by oil inlet hole 112, certainly the position of oil inlet hole 112 should be corresponding with the position of oil groove 123, bearing forms the lubricant oil transmission channel by oil inlet hole 112, oil groove 123 and oil-discharge trough 124, realizes the recycling of lubricant oil.
In the above-described embodiments, on the surface, outer ring 111 of bearing outer ring 11, be provided with the fixed groove 113 that is used for fixing bearing main body 1, bearing can be fixedly mounted on the worktable by fixed groove 113.
The squeeze film damper bearing that the embodiment of the invention provides by at bearing two ends processing suitable quantity dump tank, and reduces the area of internal support by chamfering or other forms, and then reduces the temperature in the bearing, improves reliability, and fault reduces; This bearing not only can be enhanced productivity, and guarantees quality of product, and processing is simple, and processing cost is low.
It should be noted that at last: above embodiment only in order to technological scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (9)
1. squeeze film damper bearing, comprise the bearing main body that is hollow cylinder, described bearing main body comprises bearing outer ring and bearing inner race, it is characterized in that, on at least one end position of the described bearing main body inner peripheral surface place, described bearing inner race, also be provided with from described inner peripheral surface axially outwards, along the circular groove of described inner ring radial expansion.
2. squeeze film damper bearing according to claim 1, it is characterized in that, in described inner peripheral surface and along on the axial direction of described bearing main body, also be provided with at least one, be used to lubricant oil to flow out the oil-discharge trough that described inner peripheral surface provides passage.
3. squeeze film damper bearing according to claim 2 is characterized in that, also is provided with oil groove at the middle part of described inner peripheral surface, and described oil groove is at least one, and described oil-discharge trough is communicated with described oil groove.
4. squeeze film damper bearing according to claim 3 is characterized in that, described oil groove that is interconnected and described oil-discharge trough respectively are three or four, and are symmetrical arranged on described inner peripheral surface.
5. squeeze film damper bearing according to claim 2 is characterized in that, also is provided with oil groove at the middle part of described inner peripheral surface, and described oil groove is at least one, and described oil-discharge trough and described oil groove be arranged in parallel.
6. according to the arbitrary described squeeze film damper bearing of claim 1 to 5, it is characterized in that the cylindrical or frustoconic shape of described circular groove.
7. squeeze film damper bearing according to claim 6 is characterized in that, the angle that is between the axis of the side of described circular groove of frustoconic shape and described bearing main body is α, wherein 15 °≤α＜90 °.
8. according to the arbitrary described squeeze film damper bearing of claim 3 to 5, it is characterized in that,, offer the oil inlet hole that is communicated with described oil groove by the surperficial extremely described inner peripheral surface in the outer ring of described bearing outer ring along on the radial direction of described bearing main body.
9. according to the arbitrary described squeeze film damper bearing of claim 1 to 5, it is characterized in that, on the surface, outer ring of described bearing outer ring, be provided with the fixed groove that is used for fixing described bearing main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223742XA CN102062145A (en) | 2009-11-18 | 2009-11-18 | Squeeze film damper bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223742XA CN102062145A (en) | 2009-11-18 | 2009-11-18 | Squeeze film damper bearing |
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| CN102062145A true CN102062145A (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200910223742XA Pending CN102062145A (en) | 2009-11-18 | 2009-11-18 | Squeeze film damper bearing |
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| CN (1) | CN102062145A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788113A (en) * | 2012-07-18 | 2012-11-21 | 中国船舶重工集团公司第七○二研究所 | Squeeze film damper for transmission shafting |
| CN105899829A (en) * | 2014-01-15 | 2016-08-24 | 福伊特专利有限公司 | Hydrodynamic plain bearing |
| CN106481671A (en) * | 2015-08-27 | 2017-03-08 | 长城汽车股份有限公司 | For the bearing block of supercharger, supercharger and automobile |
| CN110529498A (en) * | 2018-05-25 | 2019-12-03 | 博格华纳公司 | Single-row ball bearing with integrated squeeze film damper |
| CN111692211A (en) * | 2020-06-22 | 2020-09-22 | 奚志娴 | Magnetic suspension bearing with squeeze film damper |
| US10815831B2 (en) | 2018-12-18 | 2020-10-27 | General Electric Company | Bearing support including hermetic squeeze film damper and accumulator volume |
| CN113983069A (en) * | 2021-11-11 | 2022-01-28 | 中国船舶重工集团公司第七0三研究所 | High-speed heavy-load low-power-consumption dislocation molded line sliding support bearing |
-
2009
- 2009-11-18 CN CN200910223742XA patent/CN102062145A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788113A (en) * | 2012-07-18 | 2012-11-21 | 中国船舶重工集团公司第七○二研究所 | Squeeze film damper for transmission shafting |
| CN105899829A (en) * | 2014-01-15 | 2016-08-24 | 福伊特专利有限公司 | Hydrodynamic plain bearing |
| CN105899829B (en) * | 2014-01-15 | 2018-01-02 | 福伊特专利有限公司 | Hydrodynamic plain bearing |
| US10533602B2 (en) | 2014-01-15 | 2020-01-14 | Voith Patent Gmbh | Hydrodynamic plain bearing |
| CN106481671A (en) * | 2015-08-27 | 2017-03-08 | 长城汽车股份有限公司 | For the bearing block of supercharger, supercharger and automobile |
| CN110529498A (en) * | 2018-05-25 | 2019-12-03 | 博格华纳公司 | Single-row ball bearing with integrated squeeze film damper |
| CN110529498B (en) * | 2018-05-25 | 2023-07-14 | 博格华纳公司 | Single row ball bearing with integrated squeeze film damper |
| US10815831B2 (en) | 2018-12-18 | 2020-10-27 | General Electric Company | Bearing support including hermetic squeeze film damper and accumulator volume |
| CN111692211A (en) * | 2020-06-22 | 2020-09-22 | 奚志娴 | Magnetic suspension bearing with squeeze film damper |
| CN113983069A (en) * | 2021-11-11 | 2022-01-28 | 中国船舶重工集团公司第七0三研究所 | High-speed heavy-load low-power-consumption dislocation molded line sliding support bearing |
| CN113983069B (en) * | 2021-11-11 | 2024-04-09 | 中国船舶重工集团公司第七0三研究所 | High-speed heavy-load low-power consumption dislocation molded line sliding support bearing |
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Application publication date: 20110518 |