CN105370730B - A kind of tilting-pad bearing for rotor - Google Patents
A kind of tilting-pad bearing for rotor Download PDFInfo
- Publication number
- CN105370730B CN105370730B CN201510964839.1A CN201510964839A CN105370730B CN 105370730 B CN105370730 B CN 105370730B CN 201510964839 A CN201510964839 A CN 201510964839A CN 105370730 B CN105370730 B CN 105370730B
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- Prior art keywords
- tile fragment
- bearing
- gasket
- rotor
- carrying
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to technical field of bearings, a kind of specially tilting-pad bearing for rotor, including shell, several pieces of carrying tile fragments and several pieces of non-bearing tile fragments, carrying tile fragment is equipped with the second gasket for making the rotor keep balance with corresponding carrying tile fragment and stablize, non-bearing tile fragment is equipped with for making the rotor and corresponding non-bearing tile fragment keep balance and stablizing and be used to increase the first gasket of corresponding non-bearing tile fragment preload value, and the thickness of the first gasket is bigger than the thickness of the second gasket.The configuration of the present invention is simple, it is highly practical.
Description
Technical field
The present invention relates to technical field of bearings, specially a kind of tilting-pad bearing for rotor.
Background technology
Tilting bush radial journal bearing the arc tile fragment of free inclination can usually be formed by 3~5 or more on fulcrum, institute
To be called the more shoe radial journal bearings of branch living, also cries and swing split sleeve bearing.Since its tile fragment can be with rotating speed, load and bearing temperature
The difference of degree and freely swing, multi-oil wedge floating-ring is formed around axle journal.And each oil film pressure always points at center, has higher
Stability can be used in occasions such as turbocompressor, expanding machine, gear-box, water pumps.
Currently, due to the market demand, rotor span is increasingly longer, and the diameter of rotor is also increasing, and rotor weight is also got over
Come heavier, unit working speed is also higher and higher, correspondingly, as be mounted on the tilting-pad bearing on turbine rotor weight,
Build also increases therewith, in the prior art in use for the conventional tilting-pad bearing of turbine rotor installation, with
Rotor span it is elongated, root diameter become larger, the change of rotor quality weight, unit working speed is higher and higher and tilting bush axis
The increase of the weight and build held, after causing tilting-pad bearing to be mounted on the rotor, under the action of rotor gravity or external applied load,
Rotor center deviates bearing centre e（As Figure 1-Figure 4）, cause the gap of non-bearing part tile fragment and rotor to become larger, in turn
Cause non-bearing part tile fragment tiling oil film rigidity and oil-film damping to weaken, the stability of tile fragment is caused to weaken；If deviateing e mistakes
Greatly, will cause to be in intermediate larger between non-bearing tile fragment tiling and axle journal, and the state that both sides are smaller（As shown in Figure 2）, in work
Negative pressure is easily formed during making so that oil-film force is unstable during the work time for this part tile fragment, and tile fragment is in irregular fluctuation.
Invention content
It is a kind of steady with generation during rotor engagement in view of the deficiencies of the prior art, the present invention intends to provide
Tile fragment is not easy the tilting-pad bearing of beat unstability in fixed oil film, the course of work.
To achieve the above object, the present invention provides following technical solutions：A kind of tilting-pad bearing for rotor, including
Shell, several pieces of carrying tile fragments and several pieces of non-bearing tile fragments, non-bearing tile fragment are equipped with for adjusting corresponding non-bearing tile fragment
First gasket of preload value.
Further, carrying tile fragment is equipped with for making the rotor keep balance and stablize second with corresponding carrying tile fragment
The thickness of gasket, the first gasket is bigger than the thickness of the second gasket.
Further, the carrying tile fragment and non-bearing tile fragment are connected by several supporting blocks with shell, carrying watt
Block and non-bearing tile fragment be equipped with make one-to-one supporting block be embedded in respectively on corresponding carrying tile fragment and non-bearing tile fragment and
It is respectively used to place the locating slot of the first gasket and the second gasket.
Further, the locating piece includes swinging cambered surface, and the radius of curvature of shell intrados is more than the song for swinging cambered surface
Rate radius.
Further, the piece number of the carrying tile fragment is 3 pieces, and the piece number of non-bearing tile fragment is 2 pieces.
Further, the piece number of the carrying tile fragment is 2 pieces, and the piece number of non-bearing tile fragment is 3 pieces.
Further, the piece number of the carrying tile fragment is 2 pieces, and the piece number of non-bearing tile fragment is 2 pieces.
The deficiencies in the prior art are compared, advantageous effect caused by technical solution provided by the invention：1. the present invention is increasing
After having added the first gasket and the second gasket, the eccentricity of non-bearing tile fragment increases, then the oil between non-bearing tile fragment and rotor
Film rigidity and oil-film damping just increase, and then the stability of tile fragment is made also to be increased by.2. the tilting-pad bearing of the present invention passes through increasing
The first gasket and the second gasket are added, have reduced the gap between non-bearing tile fragment and rotor, and then the tilting-pad bearing is made to pacify
After on rotor, each non-bearing tile fragment is in stress, and uniform force, prevents non-bearing tile fragment in the course of work from occurring
The phenomenon that random swing, occurs；Be also prevented from simultaneously the gap of non-bearing tile fragment and rotor in it is intermediate it is larger, both sides are smaller shows
As occurring, and then prevent from being easy to form negative pressure and the phenomenon of oil film shakiness is caused to occur during oiling.
Description of the drawings
Fig. 1 be traditional five pieces watts and load watt on tilting-pad bearing and rotor attachment structure schematic diagram.
Fig. 2 is the portions the G enlarged structure schematic diagram of Fig. 1.
Fig. 3 be traditional five pieces watts and load watt between tilting-pad bearing and rotor attachment structure schematic diagram.
Fig. 4 be traditional henry chloranthus herb and load watt on tilting-pad bearing and rotor attachment structure schematic diagram.
Fig. 5 is the structural schematic diagram for carrying tile fragment.
Fig. 6 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 7 is the structural schematic diagram of the embodiment of the present invention 2.
Fig. 8 is the structural schematic diagram of the embodiment of the present invention 3.
Fig. 9 is the portions the K enlarged diagram of Fig. 6.
Specific implementation mode
The present invention will be further described by-Fig. 9 referring to Fig.1, illustrates the reality of the present invention by particular specific embodiment below
Mode is applied, the content that those skilled in the art can be disclosed by this specification easily understands other advantages and work(of the present invention
Effect.
Referring to Fig.1, it should however be clear that structure, ratio, the size etc. that this specification institute accompanying drawings are drawn, only coordinating
The bright revealed content of book is not limited to the enforceable limit of the present invention so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
It does not influence under the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed technology contents
In the range of capable of covering；Meanwhile cited such as "upper", "lower" term in this specification, it is merely convenient to the bright of narration
, rather than to limit the scope of the invention, relativeness is altered or modified, and technology contents are being changed without essence
Under, when the enforceable scope for being also considered as the present invention.
The tilting-pad bearing of the present invention will be described in detail by specific embodiment below.
Embodiment 1
As shown in Figure 6：A kind of tilting-pad bearing for rotor, including shell 2, several pieces of carrying tile fragments 3 and several pieces
Non-bearing tile fragment 4, non-bearing tile fragment 4 be equipped with for make the rotor 1 and corresponding non-bearing tile fragment 4 keep balancing and stabilization and
The first gasket 5 for adjusting 4 preload value of non-bearing tile fragment；Carrying tile fragment 3 be equipped with for make the rotor 1 with to agreeing
The second gasket 6 that tile fragment 3 keeps balance and stablizes is carried, the thickness of the first gasket 5 is bigger than the thickness of the second gasket 6.
When with five pieces of watts of Tilting Pad bearings, and when load acts on watt upper, wherein the quantity of carrying tile fragment 3 is 3
The quantity of block, non-bearing tile fragment 4 is 2 pieces；
The second gasket 6 is designed on carrying tile fragment 3, for making the rotor 1 and the holding of corresponding carrying tile fragment 3 balance and surely
Fixed effect, and the first gasket 5 is designed on non-bearing tile fragment 4, it has both been used to that the rotor 1 to be made to keep with corresponding carrying tile fragment 3
Balance and the effect stablized, and the thickness of the first gasket 5 is bigger than the thickness of the second gasket 6, the Increased thickness portion is for adjusting
4 preload value of corresponding non-bearing tile fragment, and the preload value of non-bearing tile fragment 4 increases, then non-bearing tile fragment 4 and rotor 1
Between gap just reduce, then the oil film rigidity and oil-film damping between tile fragment and rotor 1 just increase, and then make the steady of tile fragment
It is qualitative to be also increased by, and watt arc radius that tile fragment preload value m=e/ (R-r), wherein R are corresponding tile fragment, r are 1 axis of rotor
Radius, e correspond to the setting-up eccentricity of tile fragment away from, and the radius r of 1 axis of watt arc radius R and rotor of tile fragment is definite value, as long as
The setting-up eccentricity of corresponding tile fragment is improved away from, so that it may the preload value of the corresponding tile fragment of opposite raising.
For the ease of observation, special carrying tile fragment 3 and non-bearing tile fragment 4 in attached drawing 6 has done corresponding label, wherein holding
It carries tile fragment 3 and indicates A, non-bearing tile fragment 4 indicates B；Traditional tile fragment eccentricity is e1 (as shown in Figure 1), and increases by the first pad
After piece 5 and the second gasket 6, the eccentric distance of non-bearing tile fragment 4 is e2=e1+&, wherein & is that 5 thickness of the first gasket subtracts second
The value of 6 thickness of gasket（As shown in Figure 6）, after increasing the first gasket 5 and the second gasket 6, the eccentricity of non-bearing tile fragment 4 increases
Greatly, then oil film rigidity and oil-film damping between non-bearing tile fragment 4 and rotor 1 just increase, and then make the stability of tile fragment
It is increased by.
As shown in Figure 5：The carrying tile fragment 3 and non-bearing tile fragment 4 is connected by several supporting blocks 8 with shell 2,
Carrying tile fragment 3 and non-bearing tile fragment 4, which are equipped with, makes one-to-one supporting block 8 be embedded in corresponding carrying tile fragment 3 respectively and non-hold
The locating slot 7 of the first gasket 5 and the second gasket 6 is carried on tile fragment 4 and is respectively used to place, each piece of carrying tile fragment 3 passes through one piece
Supporting block 8 is connected on shell 2, and each piece of non-bearing tile fragment 4 is connected to also by one piece of supporting block 8 on shell 2, and each piece is held
It carries tile fragment 3 and each piece of non-bearing tile fragment 4 is both provided with locating slot 7,7 one side of locating slot is used to inlay supporting block 8, and another
Aspect is for placing the first gasket 5 or the second gasket 6.
As shown in Figure 9：The supporting block 8 includes swinging cambered surface 81, and the radius of curvature of 2 intrados of shell is more than arc of oscillation
The radius of curvature in face 81, therefore, supporting block 8 can neatly be swung during the work time, while be also convenient for installing, different-thickness
Gasket can facilitate loading, the thickness of the first gasket 5 can be determined according to the size of tile fragment and technological requirement, in order to adjust
The thickness of tile fragment.
When the conventional tilting-pad bearing for coordinate with rotor 1 works, be located at carrying tile fragment 3 below rotor 1 because
Under the action of 1 gravity of rotor or external applied load, 1 center deviation bearing centre e of rotor（As Figure 1-Figure 4）, of the invention inclines
Pad bearing reduces the gap between non-bearing tile fragment 4 and rotor 1, in turn by increasing the first gasket 5 and the second gasket 6
After so that the tilting-pad bearing is mounted on rotor 1, the force-bearing situation of non-bearing tile fragment 4, and uniform force are substantially improved, is prevented
There is the phenomenon that random swing and occurs in non-bearing tile fragment 4 in the course of work；It is also prevented from non-bearing tile fragment 4 and rotor 1 simultaneously
Gap occurs in intermediate phenomenon larger, that both sides are smaller（As shown in Figure 2）, and then prevent from being easy to be formed during oiling negative
It presses and the phenomenon of oil film shakiness is caused to occur.
Embodiment 2
As shown in Figure 7：The present embodiment is substantially the same manner as Example 1, the difference is that, can uniquely incline when with five pieces of watts of radial directions
Pad bearing, and load act on watt between when, wherein the quantity of carrying tile fragment 3 is 2 pieces, and the quantity of non-bearing tile fragment 4 is 3 pieces, is
Convenient for observation, the carrying tile fragment 3 in Fig. 7 is marked into A, and 3 pieces of non-bearing watt-minutes are not labeled as to B1, B2 and B1 successively.
As shown in Figure 7：According to the Distribution Principle of power, the non-bearing tile fragment 4 and the gap-ratio of rotor 1 that are marked with B1 are marked with
The non-bearing tile fragment 4 of B2 and the gap of rotor 1 are small, then increasing the thickness of the first gasket 5 on the non-bearing tile fragment 4 for being marked with B2
Degree &2 is bigger than the Hou Du &1 for increasing by the first gasket 5 on the non-bearing tile fragment 4 for being marked with B1, and traditional tile fragment eccentricity is
E1 (as shown in Figure 2), and after increasing the first gasket 5 and the second gasket 6, the eccentric distance for indicating the non-bearing tile fragment 4 of B1 be e2=
E1+&1, the eccentric distance for indicating the non-bearing tile fragment 4 of B2 are that e3=e1+&2 ,Qi Zhong,s &1 is to pad in the non-bearing watt for indicating B1
The value , &2 that first gasket, 5 thickness subtracts 6 thickness of the second gasket on block 4 is pad first gasket on the non-bearing tile fragment 4 for indicate B2
5 thickness subtract the value of 6 thickness of the second gasket（As shown in Figure 7）, after increasing the first gasket 5 and the second gasket 6, non-bearing watt
The eccentricity of block 4 increases, then the oil film rigidity and oil-film damping between non-bearing tile fragment 4 and rotor 1 just increase, and then makes watt
The stability of block is also increased by.
When the conventional tilting-pad bearing for coordinate with rotor 1 works, be located at carrying tile fragment 3 below rotor 1 because
Under the action of 1 gravity of rotor or external applied load, 1 center deviation bearing centre e of rotor（As Figure 1-Figure 4）, of the invention inclines
Pad bearing reduces the gap between non-bearing tile fragment 4 and rotor 1, in turn by increasing the first gasket 5 and the second gasket 6
After so that the tilting-pad bearing is mounted on rotor 1, the force-bearing situation of each non-bearing tile fragment 4 is optimized, and uniform force, is prevented
Only there is the phenomenon that random swing and occurs in non-bearing tile fragment 4 in the course of work；It is also prevented from non-bearing tile fragment 4 and rotor 1 simultaneously
Gap occur in intermediate phenomenon larger, that both sides are smaller（As shown in Figure 2）, and then prevent from being easy formation during oiling
Negative pressure and cause the phenomenon of oil film shakiness to occur.
Embodiment 3
As shown in Figure 8：The present embodiment is substantially the same manner as Example 1, the difference is that, can uniquely incline when with 4 pieces of watts of radial directions
Pad bearing, and load act on watt between when, wherein the quantity of carrying tile fragment 3 is 2 pieces, and the quantity of non-bearing tile fragment 4 is 2 pieces,
For the ease of observation, special carrying tile fragment 3 and non-bearing tile fragment 4 in attached drawing 8 has done corresponding label, wherein carrying tile fragment 3
A is indicated, non-bearing tile fragment 4 indicates B.
Traditional tile fragment eccentricity is e1 (as shown in Figure 4), and after increasing the first gasket 5 and the second gasket 6, non-bearing
The eccentric distance of tile fragment 4 is e2=e1+&, wherein & is the value that 5 thickness of the first gasket subtracts 6 thickness of the second gasket（Such as Fig. 6 institutes
Show）, after increasing the first gasket 5 and the second gasket 6, the eccentricity of non-bearing tile fragment 4 increases, then non-bearing tile fragment 4 with
Oil film rigidity and oil-film damping between rotor 1 just increase, and then the stability of tile fragment is made also to be increased by.
When the conventional tilting-pad bearing for coordinate with rotor 1 works, be located at carrying tile fragment 3 below rotor 1 because
Under the action of 1 gravity of rotor or external applied load, 1 center deviation bearing centre e of rotor（As Figure 1-Figure 4）, of the invention inclines
Pad bearing reduces the gap between non-bearing tile fragment 4 and rotor 1, in turn by increasing the first gasket 5 and the second gasket 6
After so that the tilting-pad bearing is mounted on rotor 1, the force-bearing situation of each non-bearing tile fragment 4 is optimized, and the course of work is prevented
There is the phenomenon that random swing and occurs in middle non-bearing tile fragment 4；During the gap for being also prevented from non-bearing tile fragment 4 and rotor 1 simultaneously is in
Between larger, phenomenon that both sides are smaller occur（As shown in Figure 2）, and then prevent from being easy to form negative pressure and cause during oiling
The phenomenon of oil film shakiness occurs.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, and those skilled in the art exists
Common variations and alternatives are carried out within the scope of technical solution of the present invention should all be included within the scope of the present invention.
Claims (4)
1. a kind of tilting-pad bearing for rotor, including shell, several pieces of carrying tile fragments and several pieces of non-bearing tile fragments, special
Sign is:Carrying tile fragment is equipped with the second gasket for making the rotor keep balance with corresponding carrying tile fragment and stablize, non-
Carrying tile fragment is equipped with for making the rotor and corresponding non-bearing tile fragment keep balancing and stablizing and corresponding to non-hold for increasing
The first gasket of tile fragment preload value is carried, the thickness of the first gasket is bigger than the thickness of the second gasket；
The carrying tile fragment and non-bearing tile fragment is connected by several supporting blocks with shell, and tile fragment and non-bearing watt are carried
Block, which is equipped with, to be made one-to-one supporting block be embedded in respectively on corresponding carrying tile fragment and non-bearing tile fragment and is respectively used to place
The locating slot of first gasket and the second gasket；
The supporting block includes swinging cambered surface, and the radius of curvature of shell intrados is more than the radius of curvature for swinging cambered surface.
2. a kind of tilting-pad bearing for rotor according to claim 1, it is characterised in that:The carrying tile fragment
The piece number is 3 pieces, and the piece number of non-bearing tile fragment is 2 pieces.
3. a kind of tilting-pad bearing for rotor according to claim 1, it is characterised in that:The carrying tile fragment
The piece number is 2 pieces, and the piece number of non-bearing tile fragment is 3 pieces.
4. a kind of tilting-pad bearing for rotor according to claim 1, it is characterised in that:The carrying tile fragment
The piece number is 2 pieces, and the piece number of non-bearing tile fragment is 2 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510964839.1A CN105370730B (en) | 2015-12-18 | 2015-12-18 | A kind of tilting-pad bearing for rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510964839.1A CN105370730B (en) | 2015-12-18 | 2015-12-18 | A kind of tilting-pad bearing for rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370730A CN105370730A (en) | 2016-03-02 |
| CN105370730B true CN105370730B (en) | 2018-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510964839.1A Active CN105370730B (en) | 2015-12-18 | 2015-12-18 | A kind of tilting-pad bearing for rotor |
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| Country | Link |
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| CN (1) | CN105370730B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016118006A1 (en) * | 2016-09-23 | 2018-03-29 | Renk Aktiengesellschaft | Sucker pump gearbox output shaft bearing and dredger pump gearbox |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4568204A (en) * | 1984-09-04 | 1986-02-04 | Kingsbury, Inc. | Journal bearing |
| CN2352752Y (en) * | 1998-09-03 | 1999-12-08 | 东方汽轮机厂 | Asymmetry tiltably-supprted segments bearing |
| CN202468703U (en) * | 2012-03-26 | 2012-10-03 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing provided with spring at back of upper pad |
| JP2012241758A (en) * | 2011-05-17 | 2012-12-10 | Toshiba Corp | Tilting pad journal bearing |
| CN202790093U (en) * | 2012-07-06 | 2013-03-13 | 西安陕鼓动力股份有限公司 | Multi-oil wedge tilting pad radial bearing with adjustable rigidity |
| CN205298262U (en) * | 2015-12-18 | 2016-06-08 | 中车集团台州第七八一六工厂 | A tilting pad bearing for rotor |
-
2015
- 2015-12-18 CN CN201510964839.1A patent/CN105370730B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4568204A (en) * | 1984-09-04 | 1986-02-04 | Kingsbury, Inc. | Journal bearing |
| CN2352752Y (en) * | 1998-09-03 | 1999-12-08 | 东方汽轮机厂 | Asymmetry tiltably-supprted segments bearing |
| JP2012241758A (en) * | 2011-05-17 | 2012-12-10 | Toshiba Corp | Tilting pad journal bearing |
| CN202468703U (en) * | 2012-03-26 | 2012-10-03 | 哈尔滨汽轮机厂有限责任公司 | Tilting pad bearing provided with spring at back of upper pad |
| CN202790093U (en) * | 2012-07-06 | 2013-03-13 | 西安陕鼓动力股份有限公司 | Multi-oil wedge tilting pad radial bearing with adjustable rigidity |
| CN205298262U (en) * | 2015-12-18 | 2016-06-08 | 中车集团台州第七八一六工厂 | A tilting pad bearing for rotor |
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| Publication number | Publication date |
|---|---|
| CN105370730A (en) | 2016-03-02 |
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