CN116221267A - Sliding bearing capable of conducting oil inlet unidirectionally - Google Patents
Sliding bearing capable of conducting oil inlet unidirectionally Download PDFInfo
- Publication number
- CN116221267A CN116221267A CN202310176786.1A CN202310176786A CN116221267A CN 116221267 A CN116221267 A CN 116221267A CN 202310176786 A CN202310176786 A CN 202310176786A CN 116221267 A CN116221267 A CN 116221267A
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- China
- Prior art keywords
- oil
- bearing
- bush
- oil feed
- tesla valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003921 oil Substances 0.000 claims abstract description 148
- 239000010687 lubricating oil Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005457 optimization Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
Images
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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/046—Brasses; Bushes; Linings divided or split, e.g. half-bearings or rolled sleeves
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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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
-
- 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
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
-
- 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
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/14—Bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The utility model provides a slide bearing of unilateral conduction oil feed, includes bearing frame and axle bush, and the fixed cover of bearing frame is established in the axle bush periphery, is equipped with a plurality of oil feed passageway on the axle bush, and arbitrary oil feed passageway runs through the distribution along the radial direction of axle bush, and the outer end and the bearing frame oil circuit intercommunication of oil feed passageway. According to the invention, the oil inlet channel is formed in the bearing bush, the Tesla valve is arranged in the oil inlet channel, and the bearing bush is supplied with oil by the characteristics of forward conduction and reverse interception of the Tesla valve, so that the oil bag is eliminated, the wrap angle of the bearing bush is increased, and the bearing capacity of the bearing is improved. Meanwhile, because of the reverse interception characteristic of the Tesla valve, lubricating oil flowing into the inner circle of the bearing bush cannot flow back to the oil inlet channel due to oil film pressure, the oil inlet channel can supply specific oil to the position with the maximum oil film pressure and the position with the highest oil film temperature while the oil film pressure distribution is not damaged, meanwhile, all the oil inlet channels on the bearing bush are densely distributed in the middle in the width direction of the bearing bush, and the two sides of the oil inlet channel are sparsely distributed, so that the occurrence of oil lack can be avoided.
Description
Technical Field
The invention relates to the technical field of sliding bearings, in particular to a sliding bearing with one-way conduction oil inlet.
Background
The sliding bearing has the advantages of stable and reliable operation, low noise and the like, and can ensure that the bearing bush is separated from the shaft under the lubricating condition of lubricating oil, so that the surface abrasion is reduced, and the sliding bearing is widely applied to various high-speed rotating equipment, such as large-scale turbo generators, industrial turbines and the like. However, most of the existing bearing oil inlet modes are that oil bags are arranged on bearing bushes, lubricating oil enters the oil bags through lubricating channels, and the lubricating oil is brought into bearing gaps by utilizing rotation of a rotor. The oil feeding mode has low utilization rate of lubricating oil, the wrap angle of the bearing bush is reduced due to the arrangement of the oil bag on the bearing bush, the bearing capacity of the bearing is reduced, the oil bag cannot specifically supply oil to the highest temperature and the maximum oil film pressure of the bearing bush, and if the bearing is too wide, the bearing is easy to have the oil shortage condition.
Disclosure of Invention
The invention aims to solve the technical problems and defects that the oil bag oil supply is easy to produce the oil shortage condition if the bearing is too wide, the invention provides a one-way conduction oil inlet sliding bearing, the utilization rate of the lubricating oil is improved, the bearing capacity is increased, the specific oil supply can be carried out at the highest bearing temperature and the maximum oil film pressure, and the oil shortage condition is difficult to occur.
The invention solves the technical problems, and adopts the following technical scheme: the utility model provides a slide bearing of unilateral conduction oil feed, includes bearing frame and axle bush, and the fixed cover of bearing frame is established in the axle bush periphery, is equipped with a plurality of oil feed passageway on the axle bush, and arbitrary oil feed passageway runs through along the radial direction of axle bush and distributes, and the outer end and the bearing frame oil circuit intercommunication of oil feed passageway all are equipped with the tesla valve in the oil feed passageway, and the tesla valve is used for the unidirectional water conservancy diversion to the axle bush interior circle with the lubricating oil of bearing frame oil circuit inflow, and all oil feed passageways are middle intensive in axle bush width direction, both sides sparse distribution.
As a further optimization of the sliding bearing with the one-way conduction oil inlet, the oil inlet channel is arranged at the initial position of oil film pressure, the position of maximum oil film pressure, the position of end of oil film pressure, the non-bearing area and the position of highest oil film temperature.
As a further optimization of the sliding bearing for one-way conduction oil inlet, the inner wall of the outer end of the oil inlet channel is provided with a ring groove for embedding a Tesla valve.
As a further optimization of the sliding bearing capable of conducting oil in one direction, key grooves communicated with the ring grooves are formed in ring grooves of the outer circle of the bearing bush, mounting keys are arranged at the outer ends of the Tesla valves, screws are screwed on the mounting keys, and the screws penetrate through the nail bodies of the mounting keys and are screwed with the bottom walls of the key grooves.
As further optimization of the sliding bearing with the one-way conduction oil inlet, the bearing bush comprises an upper bearing bush and a lower bearing bush, positioning pins are arranged on the outer peripheral sides of the upper bearing bush and the lower bearing bush, and positioning grooves matched with the positioning pins are formed in the inner peripheral side of the bearing seat.
As a further optimization of the sliding bearing with one-way conduction oil inlet, the bearing seat is of a split type structure, and the upper bearing seat and the lower bearing seat are connected through bolts.
As a further optimization of the sliding bearing for one-way conduction oil inlet, the inner diameter of the oil inlet channel is smaller than that of the Tesla valve.
As a further optimization of the sliding bearing with the one-way conduction oil inlet, the Tesla valve is a stepped Tesla valve.
As a further optimization of the sliding bearing for one-way conduction oil inlet, the Tesla valve is of a half-and-half structure, and the combined valve body of the Tesla valve can be a cylinder, a cone or a cuboid.
The invention has the following beneficial effects: according to the invention, the oil inlet channel is formed in the bearing bush, the Tesla valve is arranged in the oil inlet channel, and the bearing bush is supplied with oil by the characteristics of forward conduction and reverse interception of the Tesla valve, so that the oil bag is eliminated, the wrap angle of the bearing bush is increased, and the bearing capacity of the bearing is improved. Meanwhile, because of the reverse interception characteristic of the Tesla valve, lubricating oil flowing into the inner circle of the bearing bush cannot flow back to the oil inlet channel due to oil film pressure, the oil inlet channel can supply specific oil to the position with the maximum oil film pressure and the position with the highest oil film temperature while the oil film pressure distribution is not damaged, meanwhile, all the oil inlet channels on the bearing bush are densely distributed in the middle in the width direction of the bearing bush, and the two sides of the oil inlet channel are sparsely distributed, so that the occurrence of oil lack can be avoided.
Drawings
FIG. 1 is a schematic view of the internal structure of a bearing according to the present embodiment;
FIG. 2 is a schematic view of the internal cross-sectional structure of the bearing according to the present embodiment;
reference numerals: 1. bearing bush, 101, upper bearing bush, 102, lower bearing bush, 2, tesla valve, 3, bearing pedestal, 4, bolt, 5, oil inlet channel, 6, locating pin, 7, installation key, 8, screw, 9, annular groove, 10, constant head tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1-2, the invention provides a sliding bearing with one-way conduction oil inlet, which comprises a bearing seat 3 and a bearing bush 1 for supporting a rotor to rotate, wherein the bearing seat 3 is fixedly sleeved on the periphery of the bearing bush 1. When the bearing bush 1 supports the rotor, a gap is formed between the rotor and the bearing bush 1. When the bearing bush 1 supports the bearing rotor system to rotate, lubricating oil is conveyed to the gap through the oil inlet structure of the bearing bush 1, so that a pressure oil film is formed in the gap.
The bearing bush 1 is provided with a plurality of oil inlet channels 5, any oil inlet channel 5 runs through and distributes along the radial direction of the bearing bush 1, the outer end of the oil inlet channel 5 is communicated with an oil way of the bearing seat 3, a Tesla valve 2 is arranged in the oil inlet channel 5, and the forward inlet of the Tesla valve 2 is consistent with the outer end of the oil inlet channel 5 in orientation. By utilizing the characteristics of forward conduction and reverse interception of the Tesla valve 2, after the lubricating oil of the oil way of the bearing seat 3 flows into the oil inlet channel 5, the Tesla valve 2 leads the lubricating oil to the inner circle of the bearing bush 1 in a one-way, and provides stable one-way oil inlet conditions for a bearing rotor system.
Through set up oil feed passageway 5 and set up tesla valve 2 in oil feed passageway 5, can realize carrying out the oil feed to the interior circle of axle bush 1, one-way oil feed can improve the oil feed oil pressure, the cancellation of oil pocket simultaneously, has increased the wrap angle of axle bush 1, has improved bearing capacity. Meanwhile, because of the reverse interception characteristic of the Tesla valve 2, lubricating oil flowing into the inner circle of the bearing bush 1 cannot flow back to the oil inlet channel 5 due to oil film pressure, so that abrupt change of the oil film pressure in a gap is avoided, and oil film pressure distribution is damaged. The oil feed passage 5 may be opened at locations including, but not limited to, an initial oil film pressure location, a maximum oil film pressure location, an end oil film pressure location, a non-load bearing region, and a highest oil film temperature location. If the outlet of the oil inlet channel 5 is placed at the maximum oil film pressure, because of the single circulation of the Tesla valve 2, when the outlet pressure of the Tesla valve 2 is greater than the maximum oil film pressure, lubricating oil enters a bearing gap through the oil inlet channel 5 and the Tesla valve 2; when the outlet pressure of the tesla valve 2 is smaller than the maximum oil film pressure, no abrupt change occurs at the maximum oil film and the bearing capacity is not reduced because of the incompressibility of the lubricating oil and the single circulation of the tesla valve 2.
The oil inlet channel 5 is arranged at the maximum oil film pressure to supply oil to the gap, so that the rotor can be fully lubricated during starting, and dry friction is prevented. The oil inlet channel 5 is arranged at the highest temperature of the oil film to supply oil to the gap, so that the highest temperature of the oil film can be cooled, and the situation that the material of the bearing bush 1 is softened due to overhigh temperature to cause the service life of the bearing bush 1 to be too short is prevented.
Under the condition of insufficient oil supply or over-wide bearing, dry friction or indirect friction between the bearing bush 1 and the rotor caused by insufficient lubrication condition causes the condition of oil shortage of the bearing, and all oil inlet channels 5 are arranged in the width direction of the bearing bush 1 to form middle dense and two sides sparse distribution, so that the occurrence of the oil shortage can be avoided. Since the lubricating oil in the gap is discharged by extrusion to the two sides of the bearing bush 1, most of the lubricating oil is controlled to flow into the middle part of the inner circle of the bearing bush 1, and the bearing is not easy to have the condition of spent oil as long as the middle part is supplied with oil.
The inner diameter of the oil inlet channel 5 is smaller than that of the Tesla valve 2, and an annular groove 9 for embedding the Tesla valve 2 is formed in the inner wall of the outer end of the oil inlet channel 5. The annular groove 9 of the outer circle of the bearing bush 1 is provided with key grooves communicated with the annular groove 9, the outer end of the Tesla valve 2 is provided with a mounting key 7, the mounting key 7 is provided with a screw 8 in a screwing mode, and the screw 8 penetrates through the nail body of the mounting key 7 to be screwed with the bottom wall of the key groove. The mounting key 7 is fixed on the bearing bush 1 through the screw 8, so that the position of the Tesla valve 2 is limited, and the Tesla valve 2 is prevented from misplacement or falling off.
In this embodiment, the bearing seat 3 may be a split structure, and the upper bearing seat and the lower bearing seat are connected by a bolt 4. The bearing housing 3 in this embodiment may also be an integral housing. In this embodiment, the axle bush 1 is also a split structure, the axle bush 1 includes an upper axle bush 101 and a lower axle bush 102, the outer peripheral sides of the upper axle bush 101 and the lower axle bush 102 are both provided with positioning pins 6, and the inner peripheral side of the bearing seat 3 is provided with positioning grooves 10 matched with the positioning pins 6. The bearing shell 1 is fixed inside the bearing seat 3 by a locating pin 6 and a locating groove 10. In this embodiment, the axle bush 1 may be an integral axle bush.
The tesla valve 2 in the present embodiment may be a normal tesla valve or a stepped tesla valve. The stepped tesla valve is preferred in this embodiment because it reduces the radial width of the bearing shell 1 while increasing the reverse damping and non-return. In this embodiment, the tesla valve 2 has a half-and-half structure, and the combined valve body of the tesla valve 2 may be a cylinder, a cone or a cuboid. The position setting of the oil inlet channel 5 and the structure setting of the tesla valve 2 in the present example are that a cloud chart of bearing pressure and temperature distribution is obtained by iterative calculation according to a bearing lubrication reynolds equation and an energy equation, and then the cloud chart is determined according to the cloud chart, which belongs to the prior art.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (9)
1. The utility model provides a slide bearing of unilateral conduction oil feed, includes bearing frame (3) and axle bush (1), and the fixed cover of bearing frame (3) is established in axle bush (1) periphery, its characterized in that: be equipped with a plurality of oil feed passageway (5) on axle bush (1), arbitrary oil feed passageway (5) run through along axle bush (1) radial direction and distribute, the outer end and the bearing frame (3) oil circuit intercommunication of oil feed passageway (5), all be equipped with tesla valve (2) in oil feed passageway (5), tesla valve (2) are used for the lubricating oil one-way water conservancy diversion to the interior circle of axle bush (1) that flows in bearing frame (3) oil circuit, all oil feed passageway (5) are middle intensive in axle bush (1) width direction, both sides sparse distribution.
2. The sliding bearing for one-way conduction of oil feed according to claim 1, wherein: the oil inlet channel (5) is arranged at the initial position of oil film pressure, the position of maximum oil film pressure, the position of end of oil film pressure, the non-bearing area and the position of highest oil film temperature.
3. The sliding bearing for one-way conduction of oil feed according to claim 2, wherein: an annular groove (9) for embedding the Tesla valve (2) is formed in the inner wall of the outer end of the oil inlet channel (5).
4. A sliding bearing with one-way conduction oil feed as claimed in claim 3, wherein: the annular groove (9) of the outer circle of the bearing bush (1) is provided with key grooves communicated with the annular groove (9), the outer end of the Tesla valve (2) is provided with a mounting key (7), the mounting key (7) is provided with a screw (8) in a screwing mode, and the screw (8) penetrates through the nail body of the mounting key (7) to be screwed with the bottom wall of the key groove.
5. The sliding bearing for one-way conduction of oil feed according to claim 1, wherein: the bearing bush (1) comprises an upper bearing bush (101) and a lower bearing bush (102), positioning pins (6) are arranged on the outer periphery sides of the upper bearing bush (101) and the lower bearing bush (102), and positioning grooves (10) matched with the positioning pins (6) are formed in the inner periphery side of the bearing seat (3).
6. The sliding bearing for one-way conduction of oil feed according to claim 1, wherein: the bearing seat (3) is of a split structure, and the upper bearing seat and the lower bearing seat are connected through bolts (4).
7. The sliding bearing for one-way conduction of oil feed according to claim 1, wherein: the inner diameter of the oil inlet channel (5) is smaller than the inner diameter of the Tesla valve (2).
8. The sliding bearing for one-way conduction of oil feed according to claim 1, wherein: the Tesla valve (2) is a stepped Tesla valve (2).
9. The sliding bearing for one-way conduction of oil feed according to claim 1, wherein: the Tesla valve (2) is of a half-and-half structure, and the combined valve body of the Tesla valve (2) can be a cylinder, a cone or a cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310176786.1A CN116221267A (en) | 2023-02-28 | 2023-02-28 | Sliding bearing capable of conducting oil inlet unidirectionally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310176786.1A CN116221267A (en) | 2023-02-28 | 2023-02-28 | Sliding bearing capable of conducting oil inlet unidirectionally |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116221267A true CN116221267A (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310176786.1A Pending CN116221267A (en) | 2023-02-28 | 2023-02-28 | Sliding bearing capable of conducting oil inlet unidirectionally |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116221267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605763A (en) * | 2023-11-24 | 2024-02-27 | 浙江申发轴瓦股份有限公司 | Bearing bush and use method thereof |
-
2023
- 2023-02-28 CN CN202310176786.1A patent/CN116221267A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605763A (en) * | 2023-11-24 | 2024-02-27 | 浙江申发轴瓦股份有限公司 | Bearing bush and use method thereof |
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Effective date of registration: 20240625 Address after: 450001 No.149, science Avenue, high tech Zone, Zhengzhou City, Henan Province Applicant after: Zheng Ji Suo (Zhengzhou) Transmission Technology Co.,Ltd. Country or region after: China Address before: 450001 149 science Avenue, Zhengzhou high tech Industrial Development Zone, Henan Applicant before: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING Co.,Ltd. Country or region before: China |