CN206449114U - Eight-oil-cavity static pressure control sliding bearing - Google Patents
Eight-oil-cavity static pressure control sliding bearing Download PDFInfo
- Publication number
- CN206449114U CN206449114U CN201720039138.1U CN201720039138U CN206449114U CN 206449114 U CN206449114 U CN 206449114U CN 201720039138 U CN201720039138 U CN 201720039138U CN 206449114 U CN206449114 U CN 206449114U
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- oil
- cavity
- small
- bearing
- bearing body
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- 230000003068 static effect Effects 0.000 title claims abstract description 16
- 238000011084 recovery Methods 0.000 claims description 14
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 7
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 111
- 230000000694 effects Effects 0.000 description 5
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The eight-oil-cavity static pressure control sliding bearing comprises a bearing body, wherein the working surface in the bearing body is oval, four large oil cavities and four small oil cavities are arranged in the bearing body, the small oil cavities and the large oil cavities are arranged on the working surface in the bearing body oval in a staggered manner, and the small oil cavities are distributed at two ends of a long shaft and a short shaft of the bearing body oval inner surface; the small oil cavity is in an equilateral triangle shape, and the large oil cavity is in a rectangular shape; the large oil cavity and the small oil cavity are both provided with small oil inlet holes, and an oil return groove is arranged between the large oil cavity and the small oil cavity; the middle of the oil return groove is provided with an oil return hole. The utility model discloses a pressure of the little oil pocket of active control changes the atress condition of main shaft in the bearing, can restrain the vibrations of main shaft in the bearing, perhaps promotes the main shaft axle center and does the oval movement track, realizes the processing in oval abnormal shape hole.
Description
Technical field
The utility model is related to sliding bearing technical field, more particularly to a kind of eight oil pockets Static prestressed-pile sliding bearing.
Background technology
Sliding bearing is widely used in the large high-speed rotating machinery such as turbine LP rotors, blower fan.It is sliding
Dynamic bearing can be divided into hydrodynamic sliding bearing, hybrid sliding bearing, static-pressure sliding bearing according to operation principle.Hydrodynamic sliding bearing
There is no static-pressure oil chamber, hybrid sliding bearing static-pressure oil chamber area very little, so the controllability of both bearings is all poor.It is quiet
The static-pressure oil chamber area that last item is held is big, and oil sealing surface is small, and dynamic pressure effect is small, there is good controllability.
Due to the strong load and high-power output of Current mechanical equipment, the circular inner hole institute in machine components is loaded strong
More and more higher is spent, the life-span is also shorter and shorter, and not rounded endoporus reduces stress concentration with its uniform load, greatly improves parts
The advantage in life-span is widely used.For example, common piston pin hole is exactly by the way that pin-and-hole is designed into slotted eye, from
And the stress concentration on the inside of pin-and-hole is reduced, processing this kind of non-circular hole needs motion of the spindle axis in static-pressure sliding bearing
Track is ellipse.And working surface is circle in common static-pressure sliding bearing, moving radially for spindle axis is on the one hand limited
Displacement, it is impossible to meet the space requirement of axle center elliptical trajectory；On the other hand easy unstability, the stabilization of bearing at high speeds
Property is relatively low.
, it is necessary to four static-pressure oil chambers when realizing the processing of oval irregularly-shaped hole using four oil recess structures of common hydrostatic bearing
Pressure carry out active control, but due to this kind of static-pressure oil chamber area generally it is all larger, i.e. the flow of bearing oil pocket is also larger, leads
Cause control process to produce delayed, be difficult to realize accurate, the real-time control of axle center elliptical trajectory.
Active control is carried out to static-pressure sliding bearing, the processing of the non-circular holes such as piston pin hole can be not only realized, also
Vibration of the rotor in static-pressure sliding bearing can be suppressed, the stability of bearing arrangement is improved.At present, bearing stability is carried out
The occasion of research and on-line monitoring is more and more.For example in mechanical field, steam turbine is the nucleus equipment of power generation, once
The progress maintenance down that breaks down will cause damage to electricity power enterprise and operation of power networks, to the stability of bearing of turbo generator set
Eliminable failure can be found in time by carrying out on-line monitoring, so that blindness maintenance cost is effectively reduced, with certain society
Meaning and economic implications.
Authorization Notice No. is CN205101400U, discloses a kind of entitled six oil pockets static-pressure sliding bearing, including bearing
Body, the interior working surface of the bearing body is shaped as ellipse, and wedge-shaped wavy gap, the bearing body inner surface are formed with main shaft
On be uniformly distributed six static-pressure oil chambers, i.e., adjacent static-pressure oil chamber centerlines are 60 °；The shape of the static-pressure oil chamber is
Equilateral triangle, and the static-pressure oil chamber has certain depth with this to form static pressure；The static-pressure oil chamber is provided with single
Oil-recovery tank and oil return aperture are set between oil-feed aperture, adjacent static-pressure oil chamber.The technical scheme is by improving static pressure sliding axle
The inner surface work profile held, increases the oil pocket quantity of static-pressure sliding bearing, optimizes the oil pocket shape of static-pressure sliding bearing, improve
The stability of static-pressure sliding bearing.But the stressing conditions in the technical scheme bearing are not good, it is unfavorable for adding for oval irregularly-shaped hole
Work.
Utility model content
The purpose of this utility model is, proposes a kind of eight oil pockets Static prestressed-pile sliding bearing, passes through the small oil of active control
The oil pocket pressure of chamber, changes stressing conditions of the main shaft in hydrostatic bearing, suppresses vibrations of the high-speed main spindle in hydrostatic bearing, pushes away
Dynamic spindle axis do elliptic motion, realize the processing of oval profiled holes.
To achieve these goals, the technical scheme that the utility model is used for：
Working surface is ellipse, institute in a kind of eight oil pocket Static prestressed-pile sliding bearings, including bearing body, the bearing body
State bearing body interior provided with four big oil pocket and four small oil cavities, small oil cavity is staggered in the oval interior work of bearing body with big oil pocket
Surface, small oil cavity is distributed in major axis and the short axle two ends of the oval inner surface of bearing body；The small oil cavity is equilateral triangle, big oil
Chamber is rectangle；
The big oil pocket is equipped with oil-feed aperture with small oil cavity, and oil-recovery tank is configured between big oil pocket and small oil cavity；Oil return
Spill port is provided with the middle of groove.
Wherein, working surface major axis is 65.06mm in the bearing body liner tin bronze, bearing body, and short axle is
65.02mm, major axis diameter is 65mm, and bearing width is 65mm；The small oil cavity cornerite is 20 °, the equilateral triangle of big oil pocket
The length of side is 32.62mm, and the depth of small oil cavity and big oil pocket is 3mm, and oil-feed hole diameter is 8mm, and oil-recovery tank cornerite is 12 °,
Groove depth is 3mm, a diameter of 8mm of spill port.
The beneficial effects of the utility model are：
First, working surface uses ellipsoidal structure in the eight oil pockets Static prestressed-pile sliding bearing, bearing body, is conducive to carrying
The rigidity and instability speed of high static pressure sliding bearing, improve the stability of static-pressure sliding bearing.
2nd, eight static-pressure oil chambers, including four big oil pocket and four small oil cavities, adjacent big oil pocket are uniformly distributed in bearing body
Centre, which has, also configures one big oil pocket between a small oil cavity, adjacent small oil cavity, small oil cavity is distributed in the oval inner surface of bearing body
Major axis, short-axis direction, it is convenient active force is applied to main shaft to be controlled；Big oil pocket is then distributed in the middle of adjacent small oil cavity, and four
The bearing capacity that the distributing position of individual big oil pocket now is distributed in than big oil pocket when both horizontally and vertically is big, and can avoid
There is negative stiffness situation, improve antiwhip.
3rd, the shape of the big oil pocket uses the rectangle result of the common static-pressure sliding bearing of triangular structure bag, can be with
Improve the stability of static-pressure sliding bearing.The effect of big oil pocket is subject to the load of main shaft.The shape of small oil cavity still uses square
Shape, and because the small oil content of its area is few, it is possible to achieve the quick accurate control of oil pocket pressure.
4th, big oil pocket and small oil cavity have single oil-feed aperture, can carry out fuel feeding respectively to two class oil pockets, realize small
The master control control of oil pocket pressure.
5th, oil-recovery tank is configured between big oil pocket and small oil cavity, on the one hand can reduces hydrostatic bearing in this way
Uncontrollable dynamic pressure effect, influencing each other for oil pocket pressure between adjacent two oil pocket on the other hand can be prevented, in the middle of oil-recovery tank
Spill port is provided with, lubricating oil can be caused to flow back to mailbox.
6th, the utility model is changed stressing conditions of the main shaft in bearing, can pressed down by the pressure of active control small oil cavity
Vibrations of the main shaft processed in bearing, or promote spindle axis to do elliptical trajectory, realize the processing of oval profiled holes.
Brief description of the drawings
Fig. 1 is a kind of structural representation of eight oil pockets Static prestressed-pile sliding bearing of the utility model；
Fig. 2 is to split bearing along line A-A and the structure chart after deploying in Fig. 1.
Reference is：
Small oil cavity -1, big oil pocket -2, main shaft -3, bearing body -4, oil-feed aperture -5, oil-recovery tank -6,
Spill port -7.
Embodiment
The utility model is described in detail below with reference to embodiment shown in the drawings.But these embodiment party
Formula is not intended to limit the utility model, structure that one of ordinary skill in the art is made according to these embodiments, method or
Conversion functionally is all contained in protection domain of the present utility model.
Refering to shown in Fig. 1 and Fig. 2, providing a kind of eight oil pockets Static prestressed-pile sliding axle in the embodiment of the utility model one
Hold, including bearing body 4, working surface is that four big oil pocket 2 and four is provided with ellipse, the bearing body 4 in the bearing body 4
Have small in the middle of individual small oil cavity 1, small oil cavity 1 and the staggered working surface in bearing body 4 is oval of big oil pocket 2, adjacent big oil pocket 2
It also provided big oil pocket 2 in the middle of oil pocket 1, adjacent small oil cavity 1, small oil cavity 1 is distributed in the major axis of the oval inner surface of bearing body 4 and short
Axle two ends；The small oil cavity 1 is equilateral triangle, and big oil pocket 2 is rectangle；
The big oil pocket 2 is equipped with oil-feed aperture 5 with small oil cavity 1, and oil-recovery tank is configured between big oil pocket 2 and small oil cavity 1
6；Spill port 7 is provided with the middle of oil-recovery tank 6.
In above-mentioned embodiment, the small oil cavity 1 is distributed in major axis and the short axle two ends of the oval inner surface of bearing body 4, side
Just apply active force to main shaft 3 to be controlled, big oil pocket 2 is distributed in the middle of adjacent small oil cavity 1, now the distribution position of big oil pocket 2
The bearing capacity put when big oil pocket 2 being distributed in into major axis, minor axis location than traditional scheme is big, and can avoid the occurrence of negative stiffness
Situation, improves antiwhip.
The planform of big oil pocket 2 uses equilateral triangle, instead of the rectangular configuration of common static-pressure sliding bearing, Ke Yiti
The stability of high static pressure sliding bearing, the effect of big oil pocket 2 is subject to the load of main shaft 3, and the planform of small oil cavity 1 is still adopted
With rectangle, and small oil cavity 1 due to the small oil content of area it is also few, it is possible to achieve the quick accurate control of oil pocket pressure.
Big oil pocket 2 and small oil cavity 1 have single oil-feed aperture 5, can carry out fuel feeding respectively to two class oil pockets, realize small
The active control of the pressure of oil pocket 1.
Oil-recovery tank 6 is configured between oil pocket 2 and small oil cavity 1 greatly, so on the one hand the uncontrollable of hydrostatic bearing can be reduced
Dynamic pressure effect, still further aspect can prevent between big oil pocket 2 and small oil cavity 1 influencing each other for oily governor pressure, in the middle of oil-recovery tank 6
Spill port 7 is provided with, lubricating oil can be caused to flow back to fuel tank.
In a preferred embodiment, working surface major axis A is in the liner tin bronze of bearing body 4, bearing body 4
65.06mm, short axle B are 65.02mm, and major axis diameter C is 65mm, and bearing width F is 65mm；The cornerite D of small oil cavity 1 is 20 °,
The equilateral triangle length of side of big oil pocket 2 is 32.62mm, and the depth of small oil cavity 1 and big oil pocket 2 is 3mm, the diameter of oil-feed aperture 5
For 8mm, oil-recovery tank cornerite E is 12 °, and groove depth is 3mm, a diameter of 8mm of spill port 7.
The bearing body 4 uses working surface major axis in steel material, liner tin bronze, bearing body 4 to be 65.06mm, short
Axle is 65.02mm, and at Precision Machining center, boring is completed.The eight oil pocket Static prestressed-piles processed according to said structure parameter are slided
Bearing, then active control is carried out to the pressure of static-pressure oil chamber, main shaft 3 can be promoted to realize the elliptical trajectory in axle center, finally
Realize the processing of oval profiled holes.
It should be understood that, although the present specification is described in terms of embodiments, but not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Bright book is as an entirety, and the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above
Body illustrates that they are simultaneously not used to limit protection domain of the present utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within protection domain of the present utility model.
Claims (2)
1. a kind of eight oil pockets Static prestressed-pile sliding bearing, it is characterised in that：Including bearing body（4）, the bearing body（4）Interior work
Surface is ellipse, the bearing body（4）Inside it is provided with four big oil pocket（2）With four small oil cavities（1）, small oil cavity（1）With big oil
Chamber（2）It is staggered in bearing body（4）Working surface in oval, small oil cavity（1）It is distributed in bearing body（4）The length of oval inner surface
Axle and short axle two ends；The small oil cavity（1）For equilateral triangle, big oil pocket（2）For rectangle；
The big oil pocket（2）With small oil cavity（1）It is equipped with oil-feed aperture（5）, big oil pocket（2）With small oil cavity（1）Between be configured with
Oil-recovery tank（6）；Oil-recovery tank（6）Centre is provided with spill port（7）.
2. a kind of eight oil pockets Static prestressed-pile sliding bearing according to claim 1, it is characterised in that：The bearing body（4）
Liner tin bronze, bearing body（4）Interior working surface major axis is 65.06mm, and short axle is 65.02mm, and major axis diameter is 65mm, bearing
Width is 65mm；
The small oil cavity（1）Cornerite is 20 °, big oil pocket（2）The equilateral triangle length of side be 32.62mm, small oil cavity（1）With big oil
Chamber（2）Depth be 3mm, oil-feed aperture（5）A diameter of 8mm, oil-recovery tank（6）Cornerite is 12 °, and groove depth is 3mm, spill port
（7）A diameter of 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039138.1U CN206449114U (en) | 2017-01-11 | 2017-01-11 | Eight-oil-cavity static pressure control sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039138.1U CN206449114U (en) | 2017-01-11 | 2017-01-11 | Eight-oil-cavity static pressure control sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206449114U true CN206449114U (en) | 2017-08-29 |
Family
ID=59671111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720039138.1U Expired - Fee Related CN206449114U (en) | 2017-01-11 | 2017-01-11 | Eight-oil-cavity static pressure control sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206449114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985545A (en) * | 2019-12-31 | 2020-04-10 | 中国工程物理研究院总体工程研究所 | Asymmetric radial dynamic large-unbalance-loading hydrostatic bearing |
-
2017
- 2017-01-11 CN CN201720039138.1U patent/CN206449114U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985545A (en) * | 2019-12-31 | 2020-04-10 | 中国工程物理研究院总体工程研究所 | Asymmetric radial dynamic large-unbalance-loading hydrostatic bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20180111 |