CN111997999B - Tilting pad sliding bearing bush structure and tilting pad sliding bearing - Google Patents
Tilting pad sliding bearing bush structure and tilting pad sliding bearing Download PDFInfo
- Publication number
- CN111997999B CN111997999B CN202010843735.6A CN202010843735A CN111997999B CN 111997999 B CN111997999 B CN 111997999B CN 202010843735 A CN202010843735 A CN 202010843735A CN 111997999 B CN111997999 B CN 111997999B
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- Prior art keywords
- pressure
- sliding bearing
- groove
- chute
- tilting pad
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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
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
-
- 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
Abstract
The invention discloses a tilting pad sliding bearing bush structure and a tilting pad sliding bearing, which comprise a bearing bush main body, wherein an oil inlet hole and an oil inlet groove communicated with the oil inlet hole are formed in the pressure inlet side of the bearing bush main body, a dynamic and static pressure connecting hole for connecting a dynamic pressure layer and a static pressure layer is formed in the middle of the bearing bush main body, a circumferential groove and a first inclined groove communicated with the circumferential groove are formed in the upper side and the lower side of the dynamic and static pressure connecting hole respectively, a second inclined groove is formed in the left side of the dynamic and static pressure connecting hole, the upper circumferential groove and the lower circumferential groove are communicated through the second inclined groove, the first inclined groove is located in a bearing bush high-pressure area, and the second inclined groove is located in a bearing bush low-pressure area. According to the invention, the high-pressure oil film of the sliding bearing is introduced into the low-pressure area through the groove structure, so that the pressure value of the low-pressure side is effectively improved, the cavitation area is reduced, the running stability of the sliding bearing is increased, and the running life of the sliding bearing is prolonged.
Description
Technical Field
The invention belongs to the field of mechanical devices, and relates to a tilting pad sliding bearing bush structure and a tilting pad sliding bearing.
Background
The sliding bearing shows pressure increase and decrease along with contraction and diffusion of an oil film during working, and can be divided into a high-pressure bearing area and a low-pressure non-bearing area according to pressure distribution, when the pressure of the oil film in a diffusion area is lower than the vaporization pressure of the liquid, the liquid can generate vaporization phenomenon and generate steam bubbles, the bubbles can be rapidly broken under the impact generated by surrounding steam bubbles and are circularly carried out with higher frequency and impact force, when the phenomenon appears on the surfaces of a bearing bush and a shaft, the metal surface continuously bears the impact force, further surface fatigue damage is generated, and accordingly a cavitation phenomenon appears, the cavitation phenomenon in the sliding bearing can cause the bearing surface to drop in a punctiform manner, the abrasion is accelerated, the noise is increased, the service performance of the bearing is reduced, and the service life is shortened.
In order to effectively reduce the damage of cavitation to the bearing bush and increase the running reliability of the bearing, the invention needs to provide a bearing bush structure which is not easy to be subjected to cavitation.
Disclosure of Invention
The embodiment of the invention aims to provide a tilting pad sliding bearing bush structure and a tilting pad sliding bearing, so as to solve the problem of cavitation in a tilting pad sliding bearing shaft.
In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows:
in a first aspect, an embodiment of the present invention provides a bearing bush structure of a tilting-pad sliding bearing, including a bearing bush main body, an oil inlet hole and an oil inlet groove communicated with the oil inlet hole are formed on a pressure inlet side of the bearing bush main body, a dynamic and static pressure connecting hole connecting a dynamic pressure layer and a static pressure layer is formed in a middle portion of the bearing bush main body, a circumferential groove and a first chute communicated with the circumferential groove are formed on each of upper and lower sides of the dynamic and static pressure connecting hole, a second chute is formed on a left side of the dynamic and static pressure connecting hole, the upper and lower circumferential grooves are communicated with each other through the second chute, wherein the first chute is located in a bearing bush high-pressure region, and the second chute is located in a bearing bush low-pressure region.
Further, the oil inlet hole is used for supplementing the amount of lubricating oil; the oil inlet groove is used for uniformly dispersing the lubricant from the oil inlet hole; the dynamic and static pressure connecting holes are used for introducing a high-pressure lubricant of the dynamic pressure layer into the static pressure layer to form a static pressure oil film so that the tile floats or rotates; the first chute is used for collecting the lubricating oil dispersed from the oil inlet groove and allowing the lubricating oil to enter the circumferential groove; the circumferential groove is used for enabling the high-pressure lubricating oil collected by the first chute to pass through the second chute; the circumferential groove and the second inclined groove are used for transporting high-pressure lubricating oil collected by the circumferential groove into the low-pressure side gap.
Further, the depth and the width of the circumferential groove are both larger than the first inclined groove and the second inclined groove.
Further, the inclination angle of the first chute is 30-60 °.
Further, the second inclined groove is in an inverted V shape.
Further, the inclination angle of the two sides of the second chute is 30-60 degrees.
Further, the cross sections of the circumferential groove, the first inclined groove and the second inclined groove are rectangular, trapezoidal, U-shaped or semicircular.
In a second aspect, an embodiment of the present invention further provides a tilting pad sliding bearing, including the tilting pad sliding bearing bush structure described in the first aspect.
According to the technical scheme, the invention has the following beneficial effects: according to the invention, the high-pressure oil film of the sliding bearing is introduced into the low-pressure area through the groove structure, so that the pressure value of the low-pressure side is effectively improved, the cavitation area is reduced, the running stability of the sliding bearing is increased, and the running life of the sliding bearing is prolonged. According to the invention, under the condition that no additional power source is added, lubricating oil on the high-pressure side is introduced into the low-pressure side through the grooves by virtue of the dynamic and static pressure connecting holes, the first chute and the second chute, so that the pressure on the low-pressure side is increased, and the cavitation-prone area of the sliding bearing is reduced. By reducing cavitation, the invention can better reduce the pulse impact generated by oil film cavitation and increase the running stability of the sliding bearing. The invention can better prolong the service life of the surface of the bearing bush and reduce the fatigue damage of the surface of the bearing bush caused by cavitation by reducing the cavitation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a bearing shell structure of a tilting pad sliding bearing according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the flow of the lubricating oil in the groove of the bearing bush structure of the tilting-pad sliding bearing provided by the embodiment of the invention;
FIG. 3 is a schematic view of a groove structure of a bearing shell structure of a sliding bearing of a tilting pad according to an embodiment of the present invention;
in the figure: the oil inlet structure comprises an oil inlet hole 1, an oil inlet groove 2, a dynamic and static pressure connecting hole 3, a first inclined groove 4, a circumferential groove 5, a second inclined groove 6 and a bearing bush main body 7.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms such as "to the left of … …", "to the right of … …", "above … …", "above", and the like, may be used herein for ease of description to describe the spatial relationship of one device or feature to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations.
As shown in fig. 1 to 3, an embodiment of the present invention provides a bearing bush structure of a tilting-pad sliding bearing, including a bearing bush main body 7, an oil inlet hole 1 and an oil inlet groove 2 communicated with the oil inlet hole 1 are formed on a pressure inlet side of the bearing bush main body 7, the oil inlet hole 1 is used for supplementing the amount of lubricating oil, and the oil inlet groove 2 is used for uniformly dispersing the lubricant from the oil inlet hole, so that the lubricant is uniformly distributed on the surface of the bearing bush, and no air bubbles occur; the middle part of the bearing bush main body 7 is provided with dynamic and static pressure connecting holes 3 for connecting a dynamic and static pressure layer, the upper side and the lower side of the dynamic and static pressure connecting holes 3 are symmetrically provided with circumferential grooves 5 and first chutes 4 communicated with the circumferential grooves 5, the left side of the dynamic and static pressure connecting holes 3 is provided with second chutes 6, the upper circumferential groove 5 and the lower circumferential groove 5 are communicated through the second chutes 6, the first chutes 4 are positioned in a bearing bush high-pressure area, the second chutes 6 are positioned in a bearing bush low-pressure area, and the circumferential grooves 5 are connected with a bearing bush high-pressure area and a bearing bush low-pressure area. The dynamic and static pressure connecting holes 3 can lead the high-pressure lubricant of the dynamic pressure layer into the static pressure layer under the conditions of proper rotating speed and load to form a static pressure oil film, so that the tiles float or rotate; the first chute 4 is used for collecting the lubricating oil dispersed from the oil inlet groove 2 and entering the circumferential groove 5, and reducing the leakage amount at two ends of the pressure side; the circumferential groove 5 is used for enabling the high-pressure lubricating oil collected by the first chute 4 to pass through the second chute 6; the circumferential groove 5 and the second inclined groove 6 are used for transporting the high-pressure lubricating oil collected by the second inclined groove 6 into the low-pressure side gap, so that the pressure in the low-pressure side diffusion region is effectively increased, and the effect of improving cavitation is achieved.
Aiming at the problem that the traditional bearing bush cavitation influences the service life and the performance of a sliding bearing, the invention provides a tilting pad sliding bearing bush structure for reducing the cavitation by utilizing a slot, an oil film on a high-pressure side is conveyed to a low-pressure area easy to be cavitated through the slot, and the tilting pad sliding bearing bush structure is used for improving the cavitation resistance of a bearing under the action of not obviously reducing the performance of the bearing bush, so that the damage of the bearing bush caused by the cavitation influence is reduced, the service life is prolonged, and the running stability is improved.
In an alternative embodiment, the oil inlet hole 1 is connected with an oil inlet groove 2, and the width of the oil inlet groove is slightly smaller than that of the bearing bush. The circumferential grooves 5 are located on the upper and lower sides of the hybrid connecting hole 3, about one each of tile widths 1/3 and 2/3, from the pressure region to the negative pressure region. The depth and the width of the circumferential groove 5 are both larger than those of the first inclined groove 4 and the second inclined groove 6, the second inclined groove 6 is in an inverted V shape, the inclined angles of the first inclined groove 4 and the second inclined groove 6 are about 30-60 degrees, and the cross sections of the circumferential groove, the first inclined groove and the second inclined groove are rectangular, trapezoidal, U-shaped or semicircular.
The embodiment of the invention also provides a tilting pad sliding bearing, which comprises the tilting pad sliding bearing bush structure.
The foregoing detailed description is intended to illustrate and not limit the invention, which is intended to be within the spirit and scope of the appended claims, and any changes and modifications that fall within the true spirit and scope of the invention are intended to be covered by the following claims.
Claims (8)
1. The utility model provides a tilting pad slide bearing bush structure, its characterized in that, includes axle bush main part (7), the pressure inlet side of axle bush main part (7) is opened oil inlet (1) and with oil feed tank (2) that oil inlet (1) are linked together, the middle part of axle bush main part (7) is equipped with dynamic and static pressure connecting hole (3) of connecting dynamic and static pressure layer, the upper and lower side of dynamic and static pressure connecting hole (3) respectively open have circumference groove (5) and with first chute (4) that circumference groove (5) are linked together, open the left side of dynamic and static pressure connecting hole (3) has second chute (6), and two upper and lower circumference grooves (5) are linked together through second chute (6), wherein first chute (4) are located axle bush high pressure region, second chute (6) are located axle bush low pressure region.
2. A tilting pad sliding bearing pad structure according to claim 1, characterized in that said oil inlet hole (1) is used for supplementing the amount of lubricating oil; the oil inlet groove (2) is used for uniformly dispersing the lubricant from the oil inlet hole; the dynamic and static pressure connecting holes (3) are used for introducing a high-pressure lubricant of the dynamic pressure layer into the static pressure layer to form a static pressure oil film so that the tile floats or rotates; the first chute (4) is used for collecting lubricating oil dispersed from the oil inlet groove (2) and enabling the lubricating oil to enter the circumferential groove (5); the circumferential groove (5) is used for enabling high-pressure lubricating oil collected by the first chute (4) to pass through the second chute (6); the circumferential groove (5) and the second inclined groove (6) are used for conveying high-pressure lubricating oil collected by the circumferential groove (5) into the low-pressure side gap.
3. A tilting pad sliding bearing pad construction according to claim 1, characterized in that the depth and width of the circumferential groove (5) are larger than the first (4) and second (6) diagonal grooves.
4. A tilting pad sliding bearing pad construction according to claim 1, characterized in that the angle of inclination of the first chute (4) is 30-60 °.
5. A tilting pad sliding bearing pad construction according to claim 1, characterized in that said second chute (6) is Λ -shaped.
6. A tilting pad sliding bearing pad construction according to claim 5, characterised in that the angle of inclination of the second chute (6) on both sides is 30-60 °.
7. A tilting pad sliding bearing pad construction according to claim 1, wherein the circumferential groove, the first inclined groove and the second inclined groove have a rectangular, trapezoidal, U-shaped or semicircular cross-section.
8. A tilting pad sliding bearing comprising a tilting pad sliding bearing pad arrangement according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010843735.6A CN111997999B (en) | 2020-08-20 | 2020-08-20 | Tilting pad sliding bearing bush structure and tilting pad sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010843735.6A CN111997999B (en) | 2020-08-20 | 2020-08-20 | Tilting pad sliding bearing bush structure and tilting pad sliding bearing |
Publications (2)
| Publication Number | Publication Date |
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| CN111997999A CN111997999A (en) | 2020-11-27 |
| CN111997999B true CN111997999B (en) | 2022-04-12 |
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| CN202010843735.6A Active CN111997999B (en) | 2020-08-20 | 2020-08-20 | Tilting pad sliding bearing bush structure and tilting pad sliding bearing |
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| CN (1) | CN111997999B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833068A1 (en) * | 1996-09-30 | 1998-04-01 | Maag Pump Systems Textron AG | Slide bearing, especially for a gear pump |
| JP2009024798A (en) * | 2007-07-20 | 2009-02-05 | Hitachi Powdered Metals Co Ltd | Sliding bearing |
| DE102010003077A1 (en) * | 2010-03-19 | 2011-09-22 | Federal-Mogul Wiesbaden Gmbh | plain bearing shell |
| WO2012028345A1 (en) * | 2010-09-02 | 2012-03-08 | Federal-Mogul Wiesbaden Gmbh | Structured dirt depository in sliding bearing surfaces |
| CN111365364A (en) * | 2020-04-21 | 2020-07-03 | 东莞台一盈拓科技股份有限公司 | Tilting pad dynamic pressure bearing |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474792Y (en) * | 2000-08-10 | 2002-01-30 | 蒋东生 | Vibration absorber sliding bearing capable of self feeding grease oil |
| CN1128941C (en) * | 2001-02-06 | 2003-11-26 | 蒋东生 | Sliding bearing leading-in lubricating oil by itself for vibration damper |
| US20080279492A1 (en) * | 2003-11-04 | 2008-11-13 | Nmb (Usa), Inc. | Fluid Dynamic Bearing Mechanism |
| CN100357620C (en) * | 2004-08-14 | 2007-12-26 | 鸿富锦精密工业（深圳）有限公司 | Hydrodynamic bearing |
| JP2011038570A (en) * | 2009-08-07 | 2011-02-24 | Isuzu Motors Ltd | Sliding bearing |
| EP2626604B1 (en) * | 2010-10-06 | 2019-06-12 | Eagle Industry Co., Ltd. | Sliding part |
| KR20120062083A (en) * | 2010-12-06 | 2012-06-14 | 정인보 | Bush bearing of sliding bearing |
| CN103415716B (en) * | 2011-03-09 | 2016-06-08 | Ntn株式会社 | Fluid dynamic-pressure bearing device |
| JP5524249B2 (en) * | 2012-01-17 | 2014-06-18 | 大同メタル工業株式会社 | Main bearing for crankshaft of internal combustion engine |
| CN105156463B (en) * | 2013-01-31 | 2018-12-14 | 三菱日立电力系统株式会社 | Tilting pad piece bearing arrangement |
| CN204592003U (en) * | 2015-04-30 | 2015-08-26 | 东风商用车有限公司 | A kind of sliding bearing |
| CN106122262A (en) * | 2016-08-22 | 2016-11-16 | 江苏工大金凯高端装备制造有限公司 | Hydrodynamic chevron-notch sliding bearing |
| EP3575621B1 (en) * | 2017-01-30 | 2022-01-12 | Eagle Industry Co., Ltd. | Sliding component |
| CN208919089U (en) * | 2018-10-12 | 2019-05-31 | 重庆兴富吉实业有限公司 | A kind of bearing shell |
-
2020
- 2020-08-20 CN CN202010843735.6A patent/CN111997999B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833068A1 (en) * | 1996-09-30 | 1998-04-01 | Maag Pump Systems Textron AG | Slide bearing, especially for a gear pump |
| JP2009024798A (en) * | 2007-07-20 | 2009-02-05 | Hitachi Powdered Metals Co Ltd | Sliding bearing |
| DE102010003077A1 (en) * | 2010-03-19 | 2011-09-22 | Federal-Mogul Wiesbaden Gmbh | plain bearing shell |
| WO2012028345A1 (en) * | 2010-09-02 | 2012-03-08 | Federal-Mogul Wiesbaden Gmbh | Structured dirt depository in sliding bearing surfaces |
| CN111365364A (en) * | 2020-04-21 | 2020-07-03 | 东莞台一盈拓科技股份有限公司 | Tilting pad dynamic pressure bearing |
Non-Patent Citations (2)
| Title |
|---|
| 基于CFD的新型斜面推力滑动轴承承载性能分析;张文涛等;《润滑与密封》;20170915(第09期);全文 * |
| 表面织构凹槽对径向滑动轴承润滑性能的影响;张喜等;《现代制造技术与装备》;20171215(第12期);全文 * |
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| CN111997999A (en) | 2020-11-27 |
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Inventor after: Xu Yongli Inventor after: Xie Rongsheng Inventor after: Fu Jueyi Inventor after: Chen Biwu Inventor after: Xu Gaohuan Inventor after: Zhang Wanghai Inventor after: Schelege waleri konstandinovich Inventor after: Sosnowski Alexei Inventor before: Xu Yongli Inventor before: Xie Rongsheng Inventor before: Fu Jueyi Inventor before: Chen Biwu Inventor before: Zhang Wanghai Inventor before: Schelege waleri konstandinovich Inventor before: Sosnowski Alexei |
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