CN2554418Y - Sleeve intermediate thrust dyndmic-static-pressure filmatic bearing - Google Patents
Sleeve intermediate thrust dyndmic-static-pressure filmatic bearing Download PDFInfo
- Publication number
- CN2554418Y CN2554418Y CN 02243825 CN02243825U CN2554418Y CN 2554418 Y CN2554418 Y CN 2554418Y CN 02243825 CN02243825 CN 02243825 CN 02243825 U CN02243825 U CN 02243825U CN 2554418 Y CN2554418 Y CN 2554418Y
- Authority
- CN
- China
- Prior art keywords
- oil
- rectangular
- main axle
- main shaft
- bearing
- 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.)
- Expired - Lifetime
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- Sliding-Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a sleeve type middle thrust dynamic pressure and static pressure oil film bearing. An operation main axle and two oil film bearings supported at the two ends of the main axle are positioned in a sleeve, the inner end surfaces of the two oil film bearings are pasted with the stepped surface on the middle section of the main axle, a rectangular oil cavity comprising an enclosed oil slot is arranged on the inner surface of the oil film bearing, and at least three rectangular oil cavities are arranged along the periphery, and at least a row of the rectangular oil cavities are arranged along the axial direction; an echelon-shaped oil wedge is arranged on one side of the rectangular oil cavity, and an oil inlet hole is arranged inside the enclosed oil slot; one to eight oil returning islands are arranged on the other side of the rectangular oil cavity, and oil returning holes are arranged on the oil returning island, and at least one oil returning hole is arranged inside each rectangular oil cavity. The utility model is convenient for processing, the static pressure effects of the main axle and the oil film bearing are good, the dynamic pressure effect is high, and the main axle is ensured to be in a good operating condition.
Description
Technical field
The utility model relates to a kind of telescopic middle thrust hybrid hydrodynamic oil film journal bearing.
Background technique
At present, in mechanical transmission structure, one of static pressure structural type is that the filmatic bearing of supporting spindle is placed in the casing, filmatic bearing interior edge face and main shaft stage casing ladder surface form axial thrust, see also shown in Figure 1, principal axis A is contained on the filmatic bearing B, and filmatic bearing B is contained on the casing C, and bearing B interior edge face D and main shaft stage casing ladder surface form axial thrust.In this structure, the filmatic bearing of carrying main shaft is located with box body hole, thereby it is very high to the box body hole concentricity requirement, and difficulty of processing is quite big; In addition, do not form the adjustment design of dynamic pressure at the oil pocket of filmatic bearing, when main shaft rotated, the dynamic pressure effect of filmatic bearing was very low, as do suitable adjustment at oil pocket in form, will make main shaft be in more good working order.
Summary of the invention
The purpose of this utility model is to improve the shortcoming of prior art and thrust dynamic and hydrostatic bearing in the middle of telescopic that hydrostatic effects is good in a kind of easy to process and main shaft and the filmatic bearing, dynamic pressure effect is high is provided, and is in good working order to guarantee main shaft.
For achieving the above object, the utility model is taked following design proposal: it is that working spindle and the filmatic bearing that is supported on the main shaft two ends are seated in the sleeve, and the ladder surface of this two filmatic bearings interior edge face and main shaft intermediate section fits, to play the thrust effect; The filmatic bearing internal surface is provided with the rectangle oil pocket of being made up of the sealing oil groove, and this rectangle oil pocket has a row at least vertically along circumferentially having three at least; One side of described rectangle oil pocket is provided with step-like oil film wedge, is provided with oil inlet hole in the sealing oil groove; The opposite side of described rectangle oil pocket is provided with 1～8 oil return island, and spill port is located on the oil return island, has one spill port in each rectangle oil pocket at least.
The utility model main shaft is placed in the sleeve, is easy to guarantee accuracy of manufacturing, and main shaft intermediate section diameter is bigger than two supports filmatic bearing section, and main axis stiffness increases; By the rectangle oil pocket clear border that four oil grooves are formed, the oil pocket internal pressure is evenly distributed, and the oil of supplying with filmatic bearing is to enter in the rectangle oil pocket by oil inlet hole through behind the flow controller, discharges by the spill port on axial sealing oil edge and the oil return island.When main shaft is subjected to external force to cause displacement and distortion, in the rectangle oil pocket on the oil return island oil return of spill port change and to make the variation in pressure between main shaft and the filmatic bearing obvious, oil film rigidity improves, and the ladder step oil film wedge that forms in the rectangle oil pocket has increased the rigidity of filmatic bearing when main shaft gyration.
The utility model is easy to process, and hydrostatic effects is good in main shaft and the filmatic bearing, dynamic pressure effect is high, guarantees that main shaft is in good working order.
Description of drawings
Thrust static pressure filmatic bearing in the middle of Fig. 1 is existing
Fig. 2 the utility model assembly structure schematic representation
Fig. 3 the utility model filmatic bearing internal surface unfolded drawing
Fig. 4 is the A-A section of Fig. 3
Embodiment
See also Fig. 2, Fig. 3 and shown in Figure 4, the utility model is that working spindle 1 and the filmatic bearing 2 that is supported on main shaft 1 two ends are seated in the sleeve 3, and the ladder surface 11 of these two filmatic bearings, 2 interior edge faces and main shaft intermediate section fits, to play the thrust effect; Filmatic bearing 2 internal surfaces are provided with the rectangle oil pocket of being made up of sealing oil groove 211 21, and this rectangle oil pocket has two rows vertically along circumferentially having six; One side of described rectangle oil pocket 21 is provided with step-like oil film wedge 212, and the rectangle oil pocket end big at this oil film wedge 212 and gap of main reinforcement is provided with oil inlet hole 213; The opposite side of described rectangle oil pocket 21 is provided with 2 oil return islands 214, and spill port 215 is located on the oil return island, and two spill ports are arranged in each rectangle oil pocket.
Claims (1)
1, a kind of telescopic middle thrust hybrid hydrodynamic oil film journal bearing, it is characterized in that: it is that working spindle and the filmatic bearing that is supported on the main shaft two ends are seated in the sleeve, the ladder surface of this two filmatic bearings interior edge face and main shaft intermediate section fits, the filmatic bearing internal surface is provided with the rectangle oil pocket of being made up of the sealing oil groove, this rectangle oil pocket has a row at least vertically along circumferentially having three at least; One side of described rectangle oil pocket is provided with step-like oil film wedge, is provided with oil inlet hole in the sealing oil groove; The opposite side of described rectangle oil pocket is provided with 1～8 oil return island, and spill port is located on the oil return island, has one spill port in each rectangle oil pocket at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243825 CN2554418Y (en) | 2002-07-24 | 2002-07-24 | Sleeve intermediate thrust dyndmic-static-pressure filmatic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243825 CN2554418Y (en) | 2002-07-24 | 2002-07-24 | Sleeve intermediate thrust dyndmic-static-pressure filmatic bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2554418Y true CN2554418Y (en) | 2003-06-04 |
Family
ID=33715965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02243825 Expired - Lifetime CN2554418Y (en) | 2002-07-24 | 2002-07-24 | Sleeve intermediate thrust dyndmic-static-pressure filmatic bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2554418Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968078A (en) * | 2010-09-29 | 2011-02-09 | 李耀强 | Bearing bush with oil return groove |
| CN102278367A (en) * | 2011-06-23 | 2011-12-14 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Biphase heavy-duty thrust bearing |
| CN103100972A (en) * | 2013-01-14 | 2013-05-15 | 柳州市冠升机械有限责任公司 | Hydrostatic bearing main shaft device and grinding machine |
| CN103659587A (en) * | 2013-12-04 | 2014-03-26 | 西安交通大学苏州研究院 | Axial-locking prevention static pressure main shaft structure of radial thrust combined bearing support |
| CN114523416A (en) * | 2022-03-14 | 2022-05-24 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
-
2002
- 2002-07-24 CN CN 02243825 patent/CN2554418Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968078A (en) * | 2010-09-29 | 2011-02-09 | 李耀强 | Bearing bush with oil return groove |
| CN102278367A (en) * | 2011-06-23 | 2011-12-14 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Biphase heavy-duty thrust bearing |
| CN102278367B (en) * | 2011-06-23 | 2013-07-10 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Biphase heavy-duty thrust bearing |
| CN103100972A (en) * | 2013-01-14 | 2013-05-15 | 柳州市冠升机械有限责任公司 | Hydrostatic bearing main shaft device and grinding machine |
| CN103659587A (en) * | 2013-12-04 | 2014-03-26 | 西安交通大学苏州研究院 | Axial-locking prevention static pressure main shaft structure of radial thrust combined bearing support |
| CN103659587B (en) * | 2013-12-04 | 2016-08-24 | 西安交通大学苏州研究院 | The hydrostatic spindle structure that the radical-thrust joint bearing of a kind of anti-axial locking supports |
| CN114523416A (en) * | 2022-03-14 | 2022-05-24 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120724 Granted publication date: 20030604 |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Yingzhong Document name: Notification of Expiration of Patent Right Duration |