CN111594548A - Hydrostatic bearing sleeve - Google Patents
Hydrostatic bearing sleeve Download PDFInfo
- Publication number
- CN111594548A CN111594548A CN202010640425.4A CN202010640425A CN111594548A CN 111594548 A CN111594548 A CN 111594548A CN 202010640425 A CN202010640425 A CN 202010640425A CN 111594548 A CN111594548 A CN 111594548A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- bearing
- static pressure
- hole
- hydrostatic
- 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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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
- 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
- F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
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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
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a hydrostatic bearing sleeve which is provided with a bearing sleeve, wherein a sleeve joint hole is formed in the center of the end face of the bearing sleeve, an annular bulge is arranged at the position, close to the left end, of the periphery of the bearing sleeve, a sealing hole is formed in the left end of the bearing sleeve, a hydrostatic sleeve is sleeved at the right end of the bearing sleeve, a shaft hole which is communicated with the left side and the right side is formed in the center of the end face of the hydrostatic sleeve, a limiting bulge of an annular structure is arranged at the position, close to the right end, of the periphery of the hydrostatic sleeve, the limiting bulge is clamped at the outer side of the right end of the bearing. The static pressure bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the maximum extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of the oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, and leading the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 r/min.
Description
Technical Field
The invention relates to the field of hydrostatic bearings, in particular to a hydrostatic bearing sleeve.
Background
A hydrostatic bearing is one type of sliding bearing, and is a sliding bearing in which a pressure lubricant is forcibly pumped into a minute gap between a bearing and a shaft by a pressure pump. The high-speed rotating device is mainly used in the fields which need to run at low speed and require high bearing capacity, high rotating precision and high rotating speed, such as various heavy machine tools and high-precision machine tools.
At present, most of hydrostatic bearing sleeves in the market are made of steel or iron castings, the structure is strong in rigidity, but the elasticity is extremely low, the oil temperature change is large, and the precision is easy to deform due to temperature change, so that the thickness of an oil film is easy to change when a transmission shaft runs in the bearing sleeves, the running precision of the hydrostatic bearing is not improved, the precision of the hydrostatic bearing is in a laggard situation internationally, and the hydrostatic bearing with high precision required by China completely depends on import.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydrostatic bearing sleeve which has high elasticity and is not easy to deform due to temperature change so as to ensure the running precision of a bearing.
In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a hydrostatic bearing housing, has the bearing housing of being made by the alloy, the terminal surface center of bearing housing is provided with the circular hole of cup jointing of intercommunication about, and the position that the bearing housing periphery is close to the left end is provided with annular arch, the left end of bearing housing be provided with cup joint the endocentric sealed hole in hole, the right-hand member cup joint with cup joint hole complex hydrostatic cover, the hydrostatic cover is the copper sheathing, and the shaft hole of intercommunication about its terminal surface center is provided with, and the position that the hydrostatic cover periphery is close to the right-hand member is provided with the spacing arch of loop configuration, spacing protruding joint is in the right-hand member outside of bearing housing, and this spacing bellied periphery is provided with the draining district with the shaft hole.
Preferably, the oil drainage area has at least two.
Preferably, the sealing hole is a counter bore, and a sealing ring matched with the sealing hole in an embedded mode is arranged in the sealing hole.
Preferably, a plurality of assembling holes communicated left and right are formed in the annular bulge at the left end of the bearing sleeve.
Preferably, the left end of the static pressure sleeve sleeved in the bearing sleeve is connected with the right end of the sealing hole.
Preferably, the right end face of the static pressure sleeve is provided with an annular static pressure groove concentric with the shaft hole.
Preferably, the part of the inner wall of the shaft hole corresponding to the oil drainage area is provided with an oil guide groove communicated with the right end face of the static pressure sleeve.
Preferably, the left end and the right end of the shaft hole in the static pressure sleeve are provided with guide flaring holes which are flared outwards.
Compared with the prior art, the invention has the advantages that: the static pressure bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the maximum extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of the oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, and leading the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 r/min.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a sectional view of the internal structure of a hydrostatic bearing housing according to the present invention;
FIG. 2 is a sectional view of the inner structure of a bearing housing of a hydrostatic bearing housing according to the present invention;
FIG. 3 is a cross-sectional view of the internal structure of an axial thrust static pressure sleeve in a static pressure bearing sleeve of the present invention;
fig. 4 is a structural sectional view of a in fig. 3.
In the figure: 1. a bearing housing; 11. sleeving a hole; 12. a seal ring; 13. sealing the hole; 14. an assembly hole; 2. a static pressure sleeve; 21. a shaft hole; 22. an oil drainage area; 23. a static pressure groove; 24. and an oil guide groove.
Detailed Description
The invention is described in detail below with reference to the following figures and embodiments:
fig. 1 shows a hydrostatic bearing housing, which has a bearing housing 1 made of alloy, as shown in fig. 2, a circular sleeve hole 11 communicating left and right is formed in the center of the end surface of the bearing housing 1, an annular protrusion is formed at a position near the left end of the periphery of the bearing housing 1, a sealing hole 13 concentric with the sleeve hole 11 is formed at the left end of the bearing housing 1, the sealing hole 13 is a countersunk hole, and a sealing ring 12 matched with the sealing hole 13 in an embedded manner is arranged in the sealing hole 13, so that the sealing property in the bearing housing 1 is ensured; the right end of the bearing sleeve 1 is sleeved with a static pressure sleeve 2 matched with the sleeving hole 11, and the left end of the static pressure sleeve 2 sleeved in the bearing sleeve 1 is connected with the right end of the sealing hole 13; as shown in fig. 3, the static pressure sleeve 2 is a copper sleeve, a shaft hole 21 which is communicated with the left and the right is arranged in the center of the end surface of the static pressure sleeve, a limiting bulge with an annular structure is arranged at the position, close to the right end, of the periphery of the static pressure sleeve 2, the limiting bulge is clamped at the outer side of the right end of the bearing sleeve 1, and an oil drainage area 22 communicated with the shaft hole 21 is arranged on the periphery of the limiting bulge; the forming mode between the bearing sleeve 1 and the static pressure sleeve 2 is realized by adopting a mode of carrying out secondary centrifugal copper pouring on a casting.
In order to ensure that the oil film thickness is balanced when the transmission shaft runs in the bearing sleeve, the oil leakage area 22 is at least provided with two oil leakage areas.
In order to facilitate the later assembly between the bearing sleeve 1 and the bearing box, a plurality of assembling holes 14 which are communicated left and right are formed in the annular bulge at the left end of the bearing sleeve 1.
As shown in fig. 4, in order to realize axial thrust of the propeller shaft mounted in the static pressure sleeve 2, the right end surface of the static pressure sleeve 2 is provided with an annular static pressure groove 23 concentric with the shaft hole 21.
In order to facilitate the oil in the oil discharge area 22 to flow into the right end of the static pressure sleeve 2, an oil guide groove 24 communicated with the right end face of the static pressure sleeve 2 is arranged on the inner wall of the shaft hole 21 corresponding to the oil discharge area 22.
In order to facilitate the penetration connection of the transmission shaft, the left end and the right end of the inner shaft hole 21 of the static pressure sleeve 2 are provided with guide flaring holes which are flared outwards.
During the use, bearing housing 1 passes pilot hole 14 through the bolt and fixes on the bearing box, the transmission shaft is worn to establish in the shaft hole 21 of static pressure cover 2, it is sealed through sealing washer 12 between transmission shaft and the bearing housing 1, fluid gets into in the shaft hole 21 through leaking oil district 22, make the oil film formed in the clearance between transmission shaft and the shaft hole 21, fluid also can get into the right-hand member face of static pressure cover 2 through leading oil groove 24 simultaneously, and then in infiltration static pressure groove 23, make the right-hand member face of static pressure cover 2 also can form the oil film that is used for the axial thrust, because the shaping mode between bearing housing 1 and static pressure cover 2 adopts the foundry goods to carry out the mode realization that the secondary centrifugation pours copper, consequently, the elasticity of bearing housing has been improved, the oil film clearance between transmission shaft and the bearing housing can not change when the oil temperature changes in bearing housing 1, the running accuracy of transmission shaft.
The static pressure bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the maximum extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of the oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, and leading the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 r/min.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a hydrostatic bearing housing, has bearing housing (1) of being made by the alloy, the terminal surface center of bearing housing (1) is provided with circular cup joint hole (11) of left right intercommunication, and the position that the periphery of bearing housing (1) is close to the left end is provided with annular arch, its characterized in that: the left end of bearing housing (1) is provided with cup joint hole (11) endocentric sealed hole (13), and the right-hand member cup joints with cup joint hole (11) complex static pressure cover (2), static pressure cover (2) are the copper sheathing, and shaft hole (21) of intercommunication about its terminal surface center is provided with, and the position that static pressure cover (2) periphery is close to the right-hand member is provided with the spacing arch of loop configuration, spacing protruding joint is in the right-hand member outside of bearing housing (1), and this spacing bellied periphery is provided with the oil drain district (22) that communicates with shaft hole (21).
2. The hydrostatic bearing cartridge of claim 1, wherein: the oil leakage area (22) is at least provided with two.
3. The hydrostatic bearing cartridge of claim 1, wherein: the sealing hole (13) is a counter bore, and a sealing ring (12) matched with the sealing hole in an embedded mode is arranged in the sealing hole (13).
4. The hydrostatic bearing cartridge of claim 1, wherein: the bearing sleeve (1) is characterized in that a plurality of assembling holes (14) which are communicated left and right are formed in the annular bulge at the left end of the bearing sleeve.
5. The hydrostatic bearing cartridge of claim 1, wherein: the left end of the static pressure sleeve (2) sleeved in the bearing sleeve (1) is connected with the right end of the sealing hole (13).
6. The hydrostatic bearing cartridge of claim 1, wherein: the right end face of the static pressure sleeve (2) is provided with an annular static pressure groove (23) concentric with the shaft hole (21).
7. The hydrostatic bearing cartridge of claim 1, wherein: and an oil guide groove (24) communicated with the right end face of the static pressure sleeve (2) is arranged at the part of the inner wall of the shaft hole (21) corresponding to the oil drainage area (22).
8. The hydrostatic bearing cartridge of claim 1, wherein: the left end and the right end of an inner shaft hole (21) of the static pressure sleeve (2) are provided with guide flaring holes which are flared outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010640425.4A CN111594548B (en) | 2020-07-06 | 2020-07-06 | Hydrostatic bearing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010640425.4A CN111594548B (en) | 2020-07-06 | 2020-07-06 | Hydrostatic bearing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111594548A true CN111594548A (en) | 2020-08-28 |
| CN111594548B CN111594548B (en) | 2023-09-19 |
Family
ID=72185061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010640425.4A Active CN111594548B (en) | 2020-07-06 | 2020-07-06 | Hydrostatic bearing sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111594548B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1129853A (en) * | 1966-06-02 | 1968-10-09 | Mach Tool Industry Res Ass | Improvements in or relating to hydrostatic bearing assemblies |
| AU4412972A (en) * | 1971-07-05 | 1974-01-03 | Pongrass Bros. (Eng) Pty. Ltd | Composite bush |
| CN2030673U (en) * | 1988-05-09 | 1989-01-11 | 杭州轴承厂 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
| CN1314741A (en) * | 2000-03-17 | 2001-09-26 | 三星电机株式会社 | Main shaft motor |
| CN1462840A (en) * | 2002-05-27 | 2003-12-24 | 株式会社三协精机制作所 | Oil hydrodynamic bearing and shaft returning dynamo |
| CN1678838A (en) * | 2002-09-26 | 2005-10-05 | Ntn株式会社 | Hydrodynamic bearing device |
| CN1938524A (en) * | 2004-03-30 | 2007-03-28 | Ntn株式会社 | Hydrodynamic bearing device |
| JP2007263176A (en) * | 2006-03-27 | 2007-10-11 | Ntn Corp | Hydrodynamic bearing device |
| CN101705963A (en) * | 2009-11-27 | 2010-05-12 | 中国北车集团大连机车研究所有限公司 | Dongfeng series internal combustion locomotive supercharger thrust bearing |
| CN201827234U (en) * | 2010-09-21 | 2011-05-11 | 胡永光 | Axial throttling structure of liquid sliding antithrust bearing |
| US20110170813A1 (en) * | 2008-09-09 | 2011-07-14 | Ntn Corporation | Fluid dynamic bearing device and manufacturing method therefor |
| CN201944119U (en) * | 2011-01-26 | 2011-08-24 | 江西杰克机床有限公司 | Static-pressure bearing with internal-feedback throttling return oil |
| CN205937453U (en) * | 2016-07-20 | 2017-02-08 | 海盐鼎盛机械有限公司 | Two -way slip copper bearing |
| CN208236733U (en) * | 2018-05-12 | 2018-12-14 | 珠海格力电器股份有限公司 | Bearing arrangement and compressor with it |
| DE102017213502A1 (en) * | 2017-08-03 | 2019-02-07 | Continental Automotive Gmbh | Floating bush bearing for an exhaust gas turbocharger |
| WO2019155797A1 (en) * | 2018-02-08 | 2019-08-15 | 株式会社Ihi | Bearing structure |
| CN212272832U (en) * | 2020-07-06 | 2021-01-01 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
-
2020
- 2020-07-06 CN CN202010640425.4A patent/CN111594548B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1129853A (en) * | 1966-06-02 | 1968-10-09 | Mach Tool Industry Res Ass | Improvements in or relating to hydrostatic bearing assemblies |
| AU4412972A (en) * | 1971-07-05 | 1974-01-03 | Pongrass Bros. (Eng) Pty. Ltd | Composite bush |
| CN2030673U (en) * | 1988-05-09 | 1989-01-11 | 杭州轴承厂 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
| CN1314741A (en) * | 2000-03-17 | 2001-09-26 | 三星电机株式会社 | Main shaft motor |
| CN1462840A (en) * | 2002-05-27 | 2003-12-24 | 株式会社三协精机制作所 | Oil hydrodynamic bearing and shaft returning dynamo |
| CN1678838A (en) * | 2002-09-26 | 2005-10-05 | Ntn株式会社 | Hydrodynamic bearing device |
| CN1938524A (en) * | 2004-03-30 | 2007-03-28 | Ntn株式会社 | Hydrodynamic bearing device |
| JP2007263176A (en) * | 2006-03-27 | 2007-10-11 | Ntn Corp | Hydrodynamic bearing device |
| US20110170813A1 (en) * | 2008-09-09 | 2011-07-14 | Ntn Corporation | Fluid dynamic bearing device and manufacturing method therefor |
| CN101705963A (en) * | 2009-11-27 | 2010-05-12 | 中国北车集团大连机车研究所有限公司 | Dongfeng series internal combustion locomotive supercharger thrust bearing |
| CN201827234U (en) * | 2010-09-21 | 2011-05-11 | 胡永光 | Axial throttling structure of liquid sliding antithrust bearing |
| CN201944119U (en) * | 2011-01-26 | 2011-08-24 | 江西杰克机床有限公司 | Static-pressure bearing with internal-feedback throttling return oil |
| CN205937453U (en) * | 2016-07-20 | 2017-02-08 | 海盐鼎盛机械有限公司 | Two -way slip copper bearing |
| DE102017213502A1 (en) * | 2017-08-03 | 2019-02-07 | Continental Automotive Gmbh | Floating bush bearing for an exhaust gas turbocharger |
| WO2019155797A1 (en) * | 2018-02-08 | 2019-08-15 | 株式会社Ihi | Bearing structure |
| CN208236733U (en) * | 2018-05-12 | 2018-12-14 | 珠海格力电器股份有限公司 | Bearing arrangement and compressor with it |
| CN212272832U (en) * | 2020-07-06 | 2021-01-01 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111594548B (en) | 2023-09-19 |
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