CN105351359A - Fluid supporting tilting-pad bearing - Google Patents
Fluid supporting tilting-pad bearing Download PDFInfo
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- CN105351359A CN105351359A CN201510717870.5A CN201510717870A CN105351359A CN 105351359 A CN105351359 A CN 105351359A CN 201510717870 A CN201510717870 A CN 201510717870A CN 105351359 A CN105351359 A CN 105351359A
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- bearing
- tile
- oil
- tiles
- internal surface
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Abstract
A fluid supporting tilting-pad bearing comprises a bearing shell. Bearing tiles are installed on the inner surface of the bearing shell. The two sides of the bearing shell are connected with a bearing end cover. A mechanical shaft penetrates through holes of the bearing tiles to form interference fit, and the two ends of the mechanical shaft are installed in strip-shaped holes in the bearing end cover. The bearing tiles are allowed to float in the radial direction. An oil supply trough is formed in the outer surface of the bearing shell. The bearing shell and the bearing tiles are provided with oil supply guide pipes. Oil grooves are formed in the inner surfaces of the bearing tiles. The oil supply trough is communicated with the oil grooves through the oil supply guide pipes. Small center holes are formed in the bearing tiles. Static pressure cavities are formed in the outer surfaces of the bearing tiles and communicated with a dynamic pressure oil film area through the small center holes, wherein the dynamic pressure oil film area is generated by wedge-shaped convergence gaps formed by a shaft neck and the inner surfaces of the bearing tiles. Oil releasing grooves are formed in the bearing end cover. Lubricant oil in the bearing flows out of the bearing through the oil releasing grooves in a releasing manner. The dependency of the bearing on external high oil supply pressure can be reduced, and assembling and tile state monitoring are facilitated.
Description
Technical field
The present invention relates to technical field of fluid lubrication, particularly relate to a kind of fluid support tilting-pad bearing.
Background technique
Oil whirl be rotor in the main cause of lower unstability that runs up, but for oil whirl occur mechanism, also could not provide gratifying explanation in theory at present.As long as but there is oil whirl, bearing just cannot run well under the rotating speed determined and load.By can strengthen the stability of Rotor-Bearing System to the design of bearing, eliminate or weaken contingent oil whirl phenomenon.The radial sliding bearing form of current large rotating machinery extensive use is followed successively by by the height sequence of stability: tilting-pad bearing, three lobe bearing, elliptic bearing and circular journal bearing.The maximum advantage of tilting-pad bearing is to eliminate or to weaken axle journal oil whirl at high speed, widely uses in large rotating machinery therefore at present.
Although the use of above-mentioned bearing reduces or reduce the possibility that oil whirl phenomenon occurs greatly, the thing followed high power consumption and high cost also limit the further application of these bearings.Traditional tilting-pad bearing obtains higher stability by high power consumption, and fluid trunnion bearing also can only be applied due to its higher processing cost and more complicated assembling in very little scope.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of fluid support tilting-pad bearing, the dependence of bearing to the high charge oil pressure in outside can be reduced, be convenient to the monitoring assembling and carry out tile fragment state.
In order to achieve the above object, the technological scheme that the present invention takes is:
A kind of fluid support tilting bush sliding bearing, comprise bearing housing 1, the internal surface of bearing housing 1 is provided with three bearing tiles 2, bearing housing 1 both sides are connected with bearing (ball) cover 3, and bearing tile 2 has through hole, and mechanical axis 5 passes this through hole and forms interference fit, mechanical axis 5 is arranged in the bar hole 6 that bearing (ball) cover 3 is opened, the circumferential movement of restriction bearing tile 2, mechanical axis 5 moves along strip-type hole 6 thus allows the radial floating of bearing tile 2
The outer surface of described bearing housing 1 has oil supply 7, the radial direction of bearing housing 1 is provided with the first fuel supply duct 8, the radial direction of bearing tile 2 is provided with the second fuel supply duct 9, bearing tile 2 internal surface is provided with uniform oil groove 10, oil supply 7 is communicated with oil groove 10 by the first fuel supply duct 8, second fuel supply duct 9, oil groove 10 is arranged symmetrically with relative to the axis of bearing tile 2
Described bearing tile 2 geometrical center is provided with central aperture 11, bearing tile 2 outer surface is provided with uniform static pressure chamber 12, static pressure chamber 12 is restrained by the wedge shape that central aperture 11 makes axle journal and bearing tile 2 internal surface be formed the dynamic pressure oil film district that gap produces and is connected
Described bearing (ball) cover 3 was upwards evenly equipped with drain pan 13 last week, and drain pan 13 makes lubricant oil in bearing by this groove earial drainage to Bearing outer.
The outer surface of described bearing tile 2 has identical radius with the internal surface of bearing housing 1, and the outer surface of bearing tile 2 needs fine grinding, to ensure the laminating degree having more than 95% between the outer surface of bearing tile 2 and the internal surface of bearing housing 1, the radius of the internal surface of bearing tile 2 equals the radius of axle journal, and bearing tile 2 has the preset bias of a thousandth to thousand/bis-.
Described bearing housing 1 is monolithic construction or adopts split type structure.
Beneficial effect of the present invention is: mechanical axis 5 makes the attitude of bearing tile more easily control.Simultaneously due to the existence of mechanical axis 5, the location of convenient bearing tile, maintenance and replacing.
Owing to being provided with equal spreader groove 10 on bearing tile 2 internal surface, make the tile fragment of this bearing lubrication good, uniform oil film distribution, therefore do not need as tilting-pad bearing adopt like that due to lubricating system and the lubricant oil of at substantial.
Acting in conjunction due to static pressure oil film and bearing tile mechanical axis 5 makes bearing can adapt to different rotating speeds and load and can allow the certain flexure of axle journal and misalign to obtain optimum load-carrying properties simultaneously.
In sum, invention increases the performance of bearing, reduce oil whirl effect, make bearing structure compacter.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of fluid support tilting-pad bearing.
Fig. 2 is the plan view of fluid support tilting-pad bearing.
Fig. 3 is the axonometric drawing of bearing tile 2.
Fig. 4 is the cross sectional view of Fig. 2 A-A subdivision along the line.
Fig. 5 is the cross sectional view of Fig. 2 B-B subdivision along the line.
Fig. 6 is the plane view of bearing tile 2.
Fig. 7 is the subdivision view of the longitudinal middle section of bearing tile 2.
Fig. 8 is the revolved view of viewpoint C in Fig. 7.
Fig. 9 is the plan view of bearing (ball) cover 3.
Figure 10 is the partial enlarged view of the D part of Fig. 9.
Figure 11 is the cross sectional view of Fig. 9.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of fluid support tilting bush sliding bearing, comprise bearing housing 1, the internal surface of bearing housing 1 is provided with three bearing tiles 2, bearing housing 1 both sides are connected with bearing (ball) cover 3 by bolt 4, bearing tile 2 has through hole, mechanical axis 5 is through this through hole and form interference fit to ensure relative movement not to occur bearing tile 2 and mechanical axis 5, now can bearing tile 2 and mechanical axis 5 be seen integral, mechanical axis 5 is arranged in the bar hole 6 that bearing (ball) cover 3 is opened, the circumferential movement of restriction bearing tile 2, strip-type hole 6 geometrical shape is bar shaped, bearing tile 2 swings around mechanical axis 5 around the integrative-structure with mechanical axis 5, mechanical axis 5 moves along strip-type hole 6 thus allows the radial floating of bearing tile 2,
With reference to Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the outer surface of described bearing housing 1 have for bearing provides the oil supply 7 of lubricant oil, the radial direction of bearing housing 1 is provided with the first fuel supply duct 8, the radial direction of bearing tile 2 is provided with the second fuel supply duct 9, bearing tile 2 internal surface is provided with uniform oil groove 10, oil supply 7 is by the first fuel supply duct 8, second fuel supply duct 9 is communicated with oil groove 10, whole bearing tile 2 internal surface is made to produce uniform oil film, oil groove 10 is arranged symmetrically with relative to the axis of bearing tile 2, therefore no matter axle journal clockwise and anticlockwise all produces uniform oil film, bearing is because strengthening dredge oil amount make efficiency higher to the DFF Direct Fuel Feed of each bearing tile 2,
Described bearing tile 2 geometrical center is provided with central aperture 11, bearing tile 2 outer surface is provided with uniform static pressure chamber 12, static pressure chamber 12 is restrained by the wedge shape that central aperture 11 and axle journal and bearing tile 2 internal surface are formed the dynamic pressure oil film district that gap produces and is connected
With reference to Fig. 9, Figure 10, Figure 11, the drain pan 13 that the circumference of described bearing (ball) cover 3 is arranged, drain pan 13 makes the interior lubricant oil of bearing by this groove earial drainage to Bearing outer, strengthens lubricant oil dredge oil amount and effectively reduces churning loss thus reduce power consumption,
The outer surface of described bearing tile 2 has identical radius with the internal surface of bearing housing 1, and the outer surface of bearing tile 2 needs fine grinding, to ensure the laminating degree having 95% between the outer surface of bearing tile 2 and the internal surface of bearing housing 1, the radius of the internal surface of bearing tile 2 equals the radius of axle journal, but consider the load-carrying properties of bearing, bearing tile 2 has the preset bias of a thousandth to thousand/bis-.
Described bearing housing 1 is monolithic construction or adopts split type structure.
Working principle of the present invention is: oil supply 7 and bearing support form sealing area, lubricant oil is full of under the charge oil pressure of oil supply system, lubricant oil is directed in oil groove 10 by the first fuel supply duct 8 and the second fuel supply duct 9, when axle journal starts to rotate, lubricant oil is brought in the wedge shape convergence gap of axle journal and the formation of bearing tile 2 internal surface to form dynamic pressure oil film, form the lubricant oil of dynamic pressure oil film under the effect of high pressure, the static pressure chamber 12 of bearing tile 2 outer surface is entered into by the central aperture 11 of bearing tile 2, along with constantly entering of pressure oil, static pressure oil film is formed in static pressure chamber 12, under the common effect of active and static pressure oil film, the radial floating of bearing tile 2, and adjust according to different rotating speeds and load.
During fuel feeding, lubricant oil can fill up oil supply 7 and enters into the convergence wedge area of axle journal and the formation of bearing tile 2 internal surface by the equal spreader groove 10 of the first fuel supply duct 8 on bearing housing 1, the second fuel supply duct 9 on bearing tile 2 and bearing tile 2 internal surface processing successively and form dynamic pressure oil film.
Claims (3)
1. a fluid support tilting bush sliding bearing, comprise bearing housing (1), the internal surface of bearing housing (1) is provided with three bearing tiles (2), bearing housing (1) both sides are connected with bearing (ball) cover (3), it is characterized in that: (2) have through hole to bearing tile, mechanical axis (5) is through this through hole and form interference fit, mechanical axis (5) is arranged in the bar hole (6) that bearing (ball) cover (3) is opened, the circumferential movement of restriction bearing tile (2), mechanical axis (5) moves along strip-type hole (6) thus allows bearing tile (2) floating,
The outer surface of described bearing housing (1) has oil supply (7), the radial direction of bearing housing (1) is provided with the first fuel supply duct (8), the radial direction of bearing tile (2) is provided with the second fuel supply duct (9), bearing tile (2) internal surface is provided with uniform oil groove (10), oil supply (7) is communicated with oil groove (10) by the first fuel supply duct (8), the second fuel supply duct (9), oil groove (10) is arranged symmetrically with relative to the axis of bearing tile (2)
Described bearing tile (2) geometrical center is provided with central aperture (11), bearing tile (2) outer surface is provided with uniform static pressure chamber (12), static pressure chamber (12) is restrained by the wedge shape that central aperture (11) and axle journal and bearing tile (2) internal surface are formed the dynamic pressure oil film district that gap produces and is connected
Described bearing (ball) cover (3) last week is upwards evenly equipped with drain pan (13), and drain pan (13) makes lubricant oil in bearing by this groove earial drainage to Bearing outer.
2. a kind of fluid support tilting bush sliding bearing according to claim 1, it is characterized in that: the outer surface of described bearing tile (2) has identical radius with the internal surface of bearing housing (1), and the outer surface of bearing tile (2) needs fine grinding, to ensure the laminating degree having more than 95% between the outer surface of bearing tile (2) and the internal surface of bearing housing (1), the radius of the radius axle journal of the internal surface of bearing tile (2), bearing tile (2) has the preset bias of a thousandth to thousand/bis-.
3. a kind of fluid support tilting bush sliding bearing according to claim 1, is characterized in that: described bearing housing (1) is monolithic construction or adopts split type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510717870.5A CN105351359A (en) | 2015-10-29 | 2015-10-29 | Fluid supporting tilting-pad bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510717870.5A CN105351359A (en) | 2015-10-29 | 2015-10-29 | Fluid supporting tilting-pad bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351359A true CN105351359A (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510717870.5A Withdrawn CN105351359A (en) | 2015-10-29 | 2015-10-29 | Fluid supporting tilting-pad bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN105351359A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194518A (en) * | 2017-12-30 | 2018-06-22 | 北京化工大学 | A kind of tilting bush sliding bearing directly lubricates partition deep fat spray nozzle device |
| CN108302121A (en) * | 2018-04-13 | 2018-07-20 | 广州航海学院 | A kind of tilting bush sliding bearing |
| CN108779751A (en) * | 2016-02-02 | 2018-11-09 | 瓦锡兰芬兰有限公司 | Bearing arrangement |
| CN108884860A (en) * | 2016-08-10 | 2018-11-23 | 三菱日立电力系统株式会社 | Bearing arrangement and rotating machinery |
-
2015
- 2015-10-29 CN CN201510717870.5A patent/CN105351359A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108779751A (en) * | 2016-02-02 | 2018-11-09 | 瓦锡兰芬兰有限公司 | Bearing arrangement |
| CN108779751B (en) * | 2016-02-02 | 2020-09-08 | 瓦锡兰芬兰有限公司 | Bearing arrangement and high-pressure pump for a common rail fuel injection system |
| CN108884860A (en) * | 2016-08-10 | 2018-11-23 | 三菱日立电力系统株式会社 | Bearing arrangement and rotating machinery |
| CN108884860B (en) * | 2016-08-10 | 2020-04-07 | 三菱日立电力系统株式会社 | Bearing device and rotary machine |
| US11035404B2 (en) | 2016-08-10 | 2021-06-15 | Mitsubishi Power, Ltd. | Bearing device and rotary machine |
| CN108194518A (en) * | 2017-12-30 | 2018-06-22 | 北京化工大学 | A kind of tilting bush sliding bearing directly lubricates partition deep fat spray nozzle device |
| CN108302121A (en) * | 2018-04-13 | 2018-07-20 | 广州航海学院 | A kind of tilting bush sliding bearing |
| CN108302121B (en) * | 2018-04-13 | 2020-02-18 | 广州航海学院 | Tilting pad sliding bearing |
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Application publication date: 20160224 |