CN2030673U - Liquid dynamic and static pressure radial footstep bearing with two-line hole - Google Patents
Liquid dynamic and static pressure radial footstep bearing with two-line hole Download PDFInfo
- Publication number
- CN2030673U CN2030673U CN 88205410 CN88205410U CN2030673U CN 2030673 U CN2030673 U CN 2030673U CN 88205410 CN88205410 CN 88205410 CN 88205410 U CN88205410 U CN 88205410U CN 2030673 U CN2030673 U CN 2030673U
- Authority
- CN
- China
- Prior art keywords
- oil
- bearing
- shallow
- shallow oil
- sense
- 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.)
- Granted
Links
Images
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a liquid dynamic and static pressure hybrid bearing with two-line hole, whose bearing body is provided with 4 to 8 shallow oil chambers uniformly. Two oil holes are arranged on the upper part of the sense of rotation on each shallow oil chamber, and a circumferential return chute connected by a spill port is arranged on one end of the bearing body. 4 to 8 end plane shallow oil chambers are arranged on the one end plane of the bearing body closed to the circumferential return chute; an oil supplying hole is arranged on the upper part of the sense of rotation on each end plane shallow oil chamber; the oil supplying hole is communicated with the oil hole of the closest radial shallow oil chamber. The utility model has the advantages of favorable effect of dynamic and static pressure, radial bearing, and axial anti-thrust. The bearing is ordinarily suitable for the machine tools and mechanical equipment which have moderate-low heavy load, which have the great change between velocity and load, and which can be started under greater bearing capacity.
Description
A kind of double cellular type hydrodynamic and hydrostatic pressure radial-thrust bearing is applicable to the supportings of various axle systems, is particularly useful at middle low speed, high precision overloading or in the bigger lathe of speed and load change and the supporting of machinery center shafting.
The hydrodynamic and hydrostatic pressure combined bearing has had bigger development in recent years, at present, commonly used have a kind of stepped shaft hydrodynamic and hydrostatic pressure combined bearing, has single-row and branch biserial, and bearing is provided with the single-column type that is of fuel feeding annular groove in shallow oil pocket one side, be provided with the double-row type that is of fuel feeding annular groove in the centre of shallow oil pocket, shallow chamber leads directly to the fuel feeding annular groove, and axle is static when not changeing, and pressure oil is gone into the shallow chamber of bearing from the supply ring concentrated flow, and after axially oil sealing surface flow out, the static pressure of bearing is that the throttling action by shallow chamber produces; The kinetic pressure of bearing is produced by shallow oil pocket.But since the dynamic and hydrostatic bearing of this structure its active and static pressure effect is undesirable in actual use, for low speed, heavy duty or speed and load change greatly and the requirement lathe and the application in the machinery of under bigger carrying, starting be subjected to certain restriction.A kind of three pad single hole ring restrictor hydrodynamic and hydrostatic pressure combined bearings are disclosed in Chinese patent CN85203674 in addition, this invention is owing to adopted single hole three lubricating pads and the middle structure that also accompanies three oil-return grooves, when main shaft is in when static, the static pressure bearing capacity is on the low side, and the dynamic pressure effect is also poor, and rotating accuracy is not good enough, the directivity of rigidity is poor, lack angle steel, and main shaft is in when work, circumferentially oil-return groove easily advances air.Above-mentioned two kinds of hybrid bearings all do not have the axial thrust effect, can't accurately accomplish axially locating.
The purpose of this utility model is exactly in order to overcome the deficiency of above-mentioned existence, a kind of active and static pressure good mixing effect to be provided, and is applied widely, and can play radial support, the double-acting double cellular type hydrodynamic and hydrostatic pressure combined bearing of axial thrust.
The utility model is achieved by the following technical solution, and is provided with 4～8 shallow oil pockets on the internal surface of bearing support, at two of the provided upstream of each shallow oil pocket sense of rotation oil supply hole independently, oil sealing surface is arranged around each shallow oil pocket; Also have a circumferential oil-return groove on the internal surface of one side of bearing support, this oil-return groove is communicated with by at least more than one oil return straight hole in bearing support.In addition for reaching thrust function, can on a Transverse plane of bearing support, be provided with 4～8 shallow oil pockets of end face, the shallow oil pocket of each end face offers an oil supply hole in the upstream of its sense of rotation, the oil supply hole that this oil supply hole is the most close with it communicates, and forms cellular type shallow chamber hydrodynamic and hydrostatic pressure mixing thrust-bearing.
Description of drawings is as follows:
Fig. 1 is an internal structure schematic representation of the present utility model.
Fig. 2 is an axial arrangement schematic representation of the present utility model.
Fig. 3 is an axial thrust schematic representation of the present utility model.
Below by accompanying drawing the utility model is done more detailed introduction: on bearing support 1 internal surface, evenly be manufactured with 6 shallow oil pockets 2, sealing oil edge is arranged around them, all be provided with 2 oil supply holes 3 in the upstream of each shallow oil pocket 2 sense of rotation, each oil supply hole 3 equates with the distance of adjacent shafts to sealing oil edge, on an end internal surface of bearing support 1, be provided with a circumferential oil-return groove 4, on Transverse plane, evenly be manufactured with 6 shallow oil pockets 5 of end face near the bearing support 1 of this oil-return groove, in each shallow oil pocket, respectively have one oil supply hole 6 in the upstream of its sense of rotation, this oil supply hole 6 and close oil supply hole 3 corresponding connections, between 6 shallow oil pockets 6 of end face, also can be provided with radially oil-return groove 7 in addition, to increase the anti-canting ability of thrust-bearing.
Unequal or when not having multiple mutually when the number of shallow oil pocket 2 and the shallow oil pocket 5 of end face, then the oil supply hole on the shallow oil pocket 5 of end face 6 directly and the most close oil supply holes 3 be communicated with, all the other are with above-mentioned identical.
It is effective to the utlity model has dynamic and static pressure, its bearing capacity and rigidity are all more satisfactory, the precision height, and the life-span is long, low in energy consumption, the characteristics such as applied widely both can be used for the improvement of new equipment, also can be used for the transformation of used equipment, low-speed heave-load or speed and load variation are greatly and the lathe that starts under big carrying and the application in the plant equipment in generally being applicable to, and the utility model also has the effect of axial thrust, and axially the effect of location is better.
Claims (3)
1, a kind of double cellular type hydrodynamic and hydrostatic pressure combined bearing, it is to offer 4～8 shallow oil pockets 2 in bearing support 1, around the shallow oil pocket 2 is sealing oil edge, each shallow oil pocket 2 has oil supply hole 3 in the upstream of its sense of rotation, it is characterized in that described oil supply hole 3 is double cellular type, the upstream that is each shallow oil pocket 2 inherent its sense of rotation has two independently oil supply holes 3, on an end internal surface of bearing support 1, also drive a circumferential oil-return groove 4, this oil-return groove 4 is communicated with by at least more than one oil return straight hole 7 in bearing support, makes pressure oil be back to the other end of bearing support.
2, hybrid bearing as claimed in claim 1, it is characterized in that being equipped with 4～8 shallow oil pockets 5 of end face on the Transverse plane of described bearing support, the shallow oil pocket of each end face has an oil supply hole 6 in the upstream of its sense of rotation, this oil supply hole 6 communicates with the most close oil supply hole 3.
3,, it is characterized in that being provided with radially oil-return groove 7 between the shallow oil pocket 5 of described end face as claim 1,2 described hybrid bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88205410 CN2030673U (en) | 1988-05-09 | 1988-05-09 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88205410 CN2030673U (en) | 1988-05-09 | 1988-05-09 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2030673U true CN2030673U (en) | 1989-01-11 |
Family
ID=4839811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88205410 Granted CN2030673U (en) | 1988-05-09 | 1988-05-09 | Liquid dynamic and static pressure radial footstep bearing with two-line hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2030673U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101589242B (en) * | 2006-10-31 | 2011-12-21 | Gsi集团有限公司 | Aerostatic bearing spindles |
| CN102765047A (en) * | 2012-08-07 | 2012-11-07 | 湖南大学 | Hydrostatic rotational supporting component for vertical shafting and grinding and polishing machine |
| CN103075416A (en) * | 2013-01-24 | 2013-05-01 | 郑州大学 | Dynamic and static pressure conical bearing with wedged dovetail cavities |
| CN106194986A (en) * | 2016-08-09 | 2016-12-07 | 宁波市鄞州箭精密机械有限公司 | Dynamic and static pressure plane bearing |
| CN107097152A (en) * | 2017-05-05 | 2017-08-29 | 固耐重工（苏州）有限公司 | A kind of static-pressure central frame |
| CN111594548A (en) * | 2020-07-06 | 2020-08-28 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
| CN114810829A (en) * | 2022-06-27 | 2022-07-29 | 云南省机械研究设计院有限公司 | Bidirectional large dynamic range hybrid bearing |
-
1988
- 1988-05-09 CN CN 88205410 patent/CN2030673U/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101589242B (en) * | 2006-10-31 | 2011-12-21 | Gsi集团有限公司 | Aerostatic bearing spindles |
| CN102765047A (en) * | 2012-08-07 | 2012-11-07 | 湖南大学 | Hydrostatic rotational supporting component for vertical shafting and grinding and polishing machine |
| CN102765047B (en) * | 2012-08-07 | 2014-10-29 | 湖南大学 | Hydrostatic rotational supporting component for vertical shafting and grinding and polishing machine |
| CN103075416A (en) * | 2013-01-24 | 2013-05-01 | 郑州大学 | Dynamic and static pressure conical bearing with wedged dovetail cavities |
| CN103075416B (en) * | 2013-01-24 | 2015-04-29 | 郑州大学 | Dynamic and static pressure conical bearing with wedged dovetail cavities |
| CN106194986A (en) * | 2016-08-09 | 2016-12-07 | 宁波市鄞州箭精密机械有限公司 | Dynamic and static pressure plane bearing |
| CN107097152A (en) * | 2017-05-05 | 2017-08-29 | 固耐重工（苏州）有限公司 | A kind of static-pressure central frame |
| CN111594548A (en) * | 2020-07-06 | 2020-08-28 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
| CN111594548B (en) * | 2020-07-06 | 2023-09-19 | 德本恒嘉精机(昆山)有限公司 | Hydrostatic bearing sleeve |
| CN114810829A (en) * | 2022-06-27 | 2022-07-29 | 云南省机械研究设计院有限公司 | Bidirectional large dynamic range hybrid bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4371216A (en) | Fluid bearing | |
| US4090743A (en) | Fluid bearing including both hydrodynamic and hydrostatic bearings | |
| US3708215A (en) | Hybrid boost bearing assembly | |
| US3549215A (en) | Hydrostatically supported tilting pad journal bearing | |
| CN101691879A (en) | Dynamic and static pressure composite gas bearing with internal pi shaped air wedge groove | |
| CN103846459A (en) | Electric main shaft supported by hydrostatic integrated gas bearing | |
| CN2851705Y (en) | High-rigidity multi-chamber feedback static pressure bearing | |
| CN2030673U (en) | Liquid dynamic and static pressure radial footstep bearing with two-line hole | |
| CN104154120A (en) | Dynamic pressure and static pressure combined bearing bush device | |
| CN116044904A (en) | Drum-shaped double-conical-surface dynamic-static pressure radial sliding bearing | |
| US4325585A (en) | Fluid bearing | |
| CN102266952B (en) | High-precision high-rigidity large-torque hydrostatic piezoelectric spindle | |
| CN106763190B (en) | A kind of intelligent dynamic and hydrostatic bearing based on negative poisson's ratio structure | |
| CN2294801Y (en) | High-precision high-speed drilling-cutting pneumatic master shaft | |
| CN86206678U (en) | Grinding wheel axle system with cylinder-roller bearing in cylindrical house | |
| CN201106625Y (en) | Locating bearing for high speed aluminium foil mill | |
| CN211117124U (en) | Large-contact-angle pure rolling thrust tapered roller bearing | |
| US3829183A (en) | Ultra high speed rolling bearing assembly | |
| CN2030273U (en) | Shallow-cavity hydrodynamic and hydrostatic fine radial thrust bearing | |
| CN111365201A (en) | Main shaft system of large wind generating set | |
| CN2735067Y (en) | Hybrid bearing | |
| EP0221727B1 (en) | Bearing assembly | |
| CN201925357U (en) | Bearing structure of radial and axial combined oil way | |
| CN110732687A (en) | micro-groove hole dynamic and static pressure air-float main shaft | |
| CN215214357U (en) | Blocking flow damping sliding bearing with honeycomb holes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right |