CN202348954U - Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure - Google Patents
Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure Download PDFInfo
- Publication number
- CN202348954U CN202348954U CN201120318261XU CN201120318261U CN202348954U CN 202348954 U CN202348954 U CN 202348954U CN 201120318261X U CN201120318261X U CN 201120318261XU CN 201120318261 U CN201120318261 U CN 201120318261U CN 202348954 U CN202348954 U CN 202348954U
- Authority
- CN
- China
- Prior art keywords
- runner
- flow
- hydrodynamic
- flow path
- rotating shaft
- 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 - Fee Related
Links
Images
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a hydrodynamic bearing and a hydrodynamic rotary shaft with improved structure. A dynamic pressure groove is arranged on inner side wall surface of a hollow cavity of the hydrodynamic bearing or on the outer side of the hydrodynamic rotary shaft, the dynamic pressure groove includes two runner areas close to two ends, and each group of runners of each of the runner areas includes a first runner and a second runner which are intersected together, wherein the first runner inclines to the central position, the second runner inclines to the end portion, and the second runner and the first runner are intersected at the position which is close to the first runner end portion of the first runner and is located on the first runner; therefore, by improving the structure of the dynamic pressure groove, each group of runners can build a high pressure on the end portion of the first runner, the dynamic balance of a lubricated fluid can be maintained, the rotary accuracy of the hydrodynamic rotary shaft can be improved, a good abrasion resistance and long service lives of the hydrodynamic bearing and the hydrodynamic rotary shaft can be guaranteed, and simultaneously the leakage of the lubricated fluid can be effectively prevented.
Description
Technical field
The utility model relates to the hydrodynamic pressure bearing art, refers in particular to high structure improved hydrodynamic pressure bearing of a kind of long service life and rotation precision and hydrodynamic rotating shaft.
Background technique
In the past for example in the hard disc motor normally used bearing be ball bearing; Yet; Because the abrasion condition of ball every ball when rolling is different; The flutter phenomenon that the meeting appearance can not be expected after use a period of time, these flutter phenomenon cause the read/write head derailing, if the excessive normal read-write of just can't carrying out of deviation has been operated.
Afterwards, hydrodynamic pressure bearing occurred, it is through in the dynamic pressure groove, filling the dynamically lubricating fluid; In the bearing play, produce the dynamic pressure effect of lubricating fluid; Thereby with non-contact mode support fluid dynamic pressure rotating shaft, it is adapted to high speed rotating, and has advantages such as high running accuracy, low noise and high working life; Thereby, substituted aforementioned ball bearing gradually.
To above-mentioned hydrodynamic pressure bearing, of the patent No. 200620101987.7, the two runners system in its every group of runner is obliquely installed into the splayed shape structure, and it is difficult to form the higher pressure point of building; And for example the patent No. is the dynamic pressure groove of 02292854.5 record, and its every group of runner roughly becomes the V-shape structure, and two runners are set up higher pressure with support fluid dynamic pressure rotating shaft in joint; But the dynamic pressure groove of this kind structure is not when the lubricating fluid pressure of two runners in every group of runner waits; The lubricating fluid of the runner that pressure is bigger is prone to reverse the inflow in the less runner of lubricating fluid pressure, is difficult to the original intersection's build-up pressure that is designed, thereby; The dynamical balance feature that is unfavorable for lubricating fluid; Influenced the rotation precision of hydrodynamic rotating shaft, and, also be prone to the lubricating fluid leakage phenomenon; And the patent No. 200410051160.5 and the patent No. 200680000504.7 described dynamic pressure grooves, it has played good leak preventing effect, and still, its all dynamic pressure groove communicates with each other, and is unfavorable for forming the stable higher pressure point of building.
By this, be badly in need of technological scheme that research makes new advances to solve above-mentioned deficiency.
The model utility content
In view of this; The utility model is to the disappearance of existing technology existence; Its main purpose provides a kind of structure improved hydrodynamic pressure bearing and hydrodynamic rotating shaft, and the rotation precision that it has improved the hydrodynamic rotating shaft has prolonged the working life of hydrodynamic pressure bearing and hydrodynamic rotating shaft; Simultaneously, effectively prevented the lubricating fluid leakage phenomenon.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of structure improved hydrodynamic pressure bearing; Its inside has the cavity that supplies hydrodynamic rotating shaft installing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this cavity interior sidewall surface; This dynamic pressure groove includes two flow path areas that lay respectively near the aforementioned cavity end positions, and each flow path area includes the many groups runner that is provided with at interval, and the many groups runner in these two flow path areas all distributes along same circumferencial direction; Aforementioned every group of runner includes the first flow and second runner that crosses each other; This first flow tilts towards the middle position of hydrodynamic pressure bearing; This second runner tilts towards the end position of hydrodynamic pressure bearing, and this second runner and first flow are intersected on the first flow position near the first flow end.
As a kind of preferred version, said two flow path areas are respectively the first flow district and second flow path area, and every group of runner in this first flow district is herringbone structure, and every group of runner of this second flow path area is into the font structure.
As a kind of preferred version, the said first flow district and second flow path area are complete symplex structure.
As a kind of preferred version, the length of said first flow is greater than the length of second runner.
A kind of hydrodynamic rotating shaft; It is to be installed in the inner cavity of hydrodynamic pressure bearing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this hydrodynamic rotating shaft outer side surface; This dynamic pressure groove includes two flow path areas that lay respectively near aforesaid fluid dynamic pressure rotating shaft end positions, and each flow path area includes the many groups runner that is provided with at interval, and the many groups runner in these two flow path areas all distributes along same circumferencial direction; Aforementioned every group of runner includes the first flow and second runner that crosses each other; This first flow tilts towards the middle position of hydrodynamic rotating shaft; This second runner tilts towards the end position of hydrodynamic rotating shaft, and this second runner and first flow are intersected on the first flow position near the first flow end.
As a kind of preferred version, said two flow path areas are respectively the first flow district and second flow path area, and every group of runner in this first flow district is herringbone structure, and every group of runner of this second flow path area is into the font structure.
As a kind of preferred version, the said first flow district and second flow path area are complete symplex structure.
As a kind of preferred version, the length of said first flow is greater than the length of second runner.
After the utility model adopted technique scheme, its beneficial effect was that main system is through the structure of improvement dynamic pressure groove; Make every group of runner all can set up elevated pressures in the first flow end position; Help keeping the transient equiliblium of lubricating fluid, improved the rotation precision of hydrodynamic rotating shaft, make hydrodynamic pressure bearing and hydrodynamic rotating shaft have the better wear resistance ability; Prolonged both working life; Simultaneously, the first flow of aforementioned two flow path areas near end positions all is obliquely installed towards middle position, and it has effectively prevented the lubricating fluid leakage phenomenon.
Be structure characteristic and the effect of more clearly setting forth the utility model, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the assembling schematic representation of hydrodynamic pressure bearing (the dynamic pressure groove is arranged) and hydrodynamic rotating shaft (no dynamic pressure groove) in the preferred embodiment of the utility model;
Fig. 2 is the perspective view of hydrodynamic pressure bearing in the preferred embodiment of the utility model;
Fig. 3 is the stereo dissected figure of hydrodynamic pressure bearing in the preferred embodiment of the utility model;
Fig. 4 is the schematic cross-section of fluid dynamic pressure shaft in the preferred embodiment of the utility model;
Fig. 5 is the stereo dissected figure when being concaved with annular groove on the hydrodynamic pressure bearing cavity medium position inwall in the preferred embodiment of the utility model;
Fig. 6 is the schematic cross-section when being concaved with annular groove on the hydrodynamic pressure bearing cavity medium position inwall in the preferred embodiment of the utility model;
Fig. 7 is the assembling schematic representation of hydrodynamic pressure bearing (no dynamic pressure groove) and hydrodynamic rotating shaft (the dynamic pressure groove is arranged) in the preferred embodiment of the utility model;
Fig. 8 is the decomposing schematic representation of hydrodynamic pressure bearing (the dynamic pressure groove is arranged) and hydrodynamic rotating shaft (the dynamic pressure groove is arranged) in the preferred embodiment of the utility model;
Fig. 9 is the flow schematic diagram of lubricating fluid in the dynamic pressure groove in the preferred embodiment of the utility model.
The accompanying drawing identifier declaration:
10, hydrodynamic pressure bearing 11, dynamic pressure groove
1101, first flow district 1102, second flow path area
111, first flow 112, second runner
101, annular groove 102, flute mark
20, hydrodynamic rotating shaft 21, dynamic pressure groove.
Embodiment
See also Fig. 1 to shown in Figure 9, it has demonstrated the concrete structure of the preferred embodiment of the utility model.These hydrodynamic pressure bearing 10 inside have a cavity, and this hydrodynamic rotating shaft 20 is installed in this cavity.Through on the cavity interior sidewall surface of hydrodynamic pressure bearing 10, offering dynamic pressure groove 11 (as shown in Figure 1); Perhaps on hydrodynamic rotating shaft 20 outer surfaces, offer dynamic pressure groove 21 (as shown in Figure 7); Perhaps; On the cavity interior sidewall surface of hydrodynamic pressure bearing 10, offer dynamic pressure groove 11; And on hydrodynamic rotating shaft 20 outer surfaces, offer dynamic pressure groove 21 (as shown in Figure 8); Be filled with the dynamically lubricating fluid in this dynamic pressure groove; Utilize lubricating fluid between hydrodynamic rotating shaft 20 and hydrodynamic pressure bearing 10, to produce lubrication, with the collision and the friction of 10 of hydrodynamic pressure bearings, and hydrodynamic rotating shaft 20 is maintained within certain rotation precision when avoiding hydrodynamic rotating shaft 20 to rotate by the pressure and the damping characteristic of lubricating fluid foundation.
Need to prove; When dynamic pressure groove 11 only is opened on the aforesaid fluid hydraulic bearing 10 cavity interior sidewall surface (as shown in Figure 1); The sense of rotation of this hydrodynamic pressure bearing 10 is identical when dynamic pressure groove 21 only is opened in aforesaid fluid dynamic pressure rotating shaft 20 outer surfaces (as shown in Figure 7) in circumferentially with the flow direction of aforementioned lubricating fluid, and the sense of rotation of this hydrodynamic rotating shaft 20 and the flow direction of aforementioned lubricating fluid are opposite in circumferentially; Certainly; Flow direction respectively at offering 11,21 o'clock (as shown in Figure 8) these dynamic pressure groove 11 interior lubricating fluids of dynamic pressure groove on the cavity interior sidewall surface of aforesaid fluid hydraulic bearing 10 and on hydrodynamic rotating shaft 20 outer surfaces is identical in circumferentially with the sense of rotation of hydrodynamic rotating shaft 20, and the sense of rotation of the flow direction of these dynamic pressure groove 21 interior lubricating fluids and hydrodynamic rotating shaft 20 is opposite in circumferentially.
Focusing on of the utility model, the structural design of aforementioned dynamic pressure groove.At this, the dynamic pressure groove of offering on the cavity interior sidewall surface with hydrodynamic pressure bearing 10 11 is that example is explained, certainly, the dynamic pressure groove 11 of this kind structure also can be opened on aforesaid fluid dynamic pressure rotating shaft 20 outer surfaces.
This dynamic pressure groove 11 includes two flow path areas that lay respectively near aforesaid fluid hydraulic bearing 10 cavity end positions, and each flow path area includes the many groups runner that is provided with at interval, and the many groups runner in these two flow path areas all distributes along same circumferencial direction; Aforementioned every group of runner includes the first flow 111 and second runner 112 that crosses each other; This first flow 111 tilts towards the middle position of hydrodynamic pressure bearing 10; This second runner 112 tilts towards the end position of hydrodynamic pressure bearing 10; And this second runner 112 and first flow 111 are intersected on the first flow 111 near the position of first flow 111 ends, and the length of this first flow 111 is greater than the length of second runner 112
Specifically in present embodiment; Aforementioned two flow path areas; Be the district of first flow shown in the accompanying drawing 1101 and second flow path area 1102; Every group of runner in this first flow district 1101 is herringbone structure, and every group of runner of this second flow path area 1102 is into the font structure, and this first flow district 1101 and second flow path area 1102 are complete symplex structure.
In addition; Like Fig. 5 and shown in Figure 6; When being concaved with annular groove 101 on the aforementioned hydrodynamic pressure bearing 10 cavity medium position inwalls, the degree of depth of aforementioned dynamic pressure groove 11 obviously is shallower than the degree of depth of annular groove 101, thereby; When making dynamic pressure groove 11, can on annular groove 101 interior sidewall surface of hydrodynamic pressure bearing 10 cavity medium positions, not form like Fig. 3 or flute mark 102 shown in Figure 4.
The design focal point of the utility model is; Main system makes every group of runner all can set up elevated pressures in the first flow end position through the structure of improvement dynamic pressure groove, helps keeping the transient equiliblium of lubricating fluid; Improved the rotation precision of hydrodynamic rotating shaft; Make hydrodynamic pressure bearing and hydrodynamic rotating shaft have the better wear resistance ability, prolonged both working life, simultaneously; The first flow of aforementioned two flow path areas near end positions all is obliquely installed towards middle position, and it has effectively prevented the lubricating fluid leakage phenomenon.
The above; It only is the preferred embodiment of the utility model; Be not that the technical scope of the utility model is done any restriction; So every technical spirit according to the utility model all still belongs in the scope of the utility model technological scheme any trickle modification, equivalent variations and modification that above embodiment did.
Claims (8)
1. structure improved hydrodynamic pressure bearing; Its inside has the cavity that supplies hydrodynamic rotating shaft installing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this cavity interior sidewall surface; It is characterized in that: this dynamic pressure groove includes two flow path areas that lay respectively near the aforementioned cavity end positions, and each flow path area includes the many groups runner that is provided with at interval, and the many groups runner in these two flow path areas all distributes along same circumferencial direction; Aforementioned every group of runner includes the first flow and second runner that crosses each other; This first flow tilts towards the middle position of hydrodynamic pressure bearing; This second runner tilts towards the end position of hydrodynamic pressure bearing, and this second runner and first flow are intersected on the first flow position near the first flow end.
2. structure improved hydrodynamic pressure bearing according to claim 1; It is characterized in that: said two flow path areas are respectively the first flow district and second flow path area; Every group of runner in this first flow district is herringbone structure, and every group of runner of this second flow path area is into the font structure.
3. structure improved hydrodynamic pressure bearing according to claim 2 is characterized in that: the said first flow district and second flow path area are complete symplex structure.
4. structure improved hydrodynamic pressure bearing according to claim 1 is characterized in that: the length of said first flow is greater than the length of second runner.
5. hydrodynamic rotating shaft; It is to be installed in the inner cavity of hydrodynamic pressure bearing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this hydrodynamic rotating shaft outer side surface; It is characterized in that: this dynamic pressure groove includes two flow path areas that lay respectively near aforesaid fluid dynamic pressure rotating shaft end positions, and each flow path area includes the many groups runner that is provided with at interval, and the many groups runner in these two flow path areas all distributes along same circumferencial direction; Aforementioned every group of runner includes the first flow and second runner that crosses each other; This first flow tilts towards the middle position of hydrodynamic rotating shaft; This second runner tilts towards the end position of hydrodynamic rotating shaft, and this second runner and first flow are intersected on the first flow position near the first flow end.
6. hydrodynamic rotating shaft according to claim 5; It is characterized in that: said two flow path areas are respectively the first flow district and second flow path area; Every group of runner in this first flow district is herringbone structure, and every group of runner of this second flow path area is into the font structure.
7. hydrodynamic rotating shaft according to claim 6 is characterized in that: the said first flow district and second flow path area are complete symplex structure.
8. hydrodynamic rotating shaft according to claim 5 is characterized in that: the length of said first flow is greater than the length of second runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120318261XU CN202348954U (en) | 2011-08-29 | 2011-08-29 | Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120318261XU CN202348954U (en) | 2011-08-29 | 2011-08-29 | Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348954U true CN202348954U (en) | 2012-07-25 |
Family
ID=46537961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120318261XU Expired - Fee Related CN202348954U (en) | 2011-08-29 | 2011-08-29 | Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348954U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404416A (en) * | 2018-12-14 | 2019-03-01 | 中国船舶重工集团公司第七0七研究所 | A kind of hydrodynamic pressure bearing and its manufacturing method |
| CN111981033A (en) * | 2019-05-23 | 2020-11-24 | 东培工业股份有限公司 | Non-directional dynamic pressure bearing structure |
| CN113681036A (en) * | 2021-08-12 | 2021-11-23 | 珠海格力电器股份有限公司 | Lubricating assembly, electric spindle device and machining equipment |
| CN114060108A (en) * | 2021-10-28 | 2022-02-18 | 江苏大学 | Water-lubricated bearing of turbine type energy recovery all-in-one machine |
-
2011
- 2011-08-29 CN CN201120318261XU patent/CN202348954U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404416A (en) * | 2018-12-14 | 2019-03-01 | 中国船舶重工集团公司第七0七研究所 | A kind of hydrodynamic pressure bearing and its manufacturing method |
| CN111981033A (en) * | 2019-05-23 | 2020-11-24 | 东培工业股份有限公司 | Non-directional dynamic pressure bearing structure |
| CN113681036A (en) * | 2021-08-12 | 2021-11-23 | 珠海格力电器股份有限公司 | Lubricating assembly, electric spindle device and machining equipment |
| CN113681036B (en) * | 2021-08-12 | 2022-08-19 | 珠海格力电器股份有限公司 | Lubricating assembly, electric spindle device and machining equipment |
| CN114060108A (en) * | 2021-10-28 | 2022-02-18 | 江苏大学 | Water-lubricated bearing of turbine type energy recovery all-in-one machine |
| CN114060108B (en) * | 2021-10-28 | 2024-06-07 | 江苏大学 | Water lubrication bearing of turbine type energy recovery integrated machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202348954U (en) | Hydrodynamic bearing and hydrodynamic rotary shaft with improved structure | |
| US20040141666A1 (en) | Grooving pattern for grooved fluid bearing | |
| CN203926403U (en) | A kind of guide bearing system of initiatively lubricating | |
| CN102954111A (en) | Surface structure of radial sliding bearing with lubricating oil points in phyllotaxy arrangement | |
| CN202348955U (en) | Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft | |
| CN102494021B (en) | Oil lubricating roll-slide bearing with elastic roller | |
| CN102305237A (en) | Fluid dynamic pressure bearing and fluid dynamic pressure shaft | |
| CN1940322A (en) | Fluid dynamical-pressure bearing | |
| CN104141688B (en) | hydrodynamic sliding bearing device with automatic cleaning function | |
| US7042125B2 (en) | Hydraulic fluid dynamic bearing incorporating an asymmetric journal bearing | |
| US7637663B2 (en) | Fluid bearing with a variable depth groove | |
| CN203868122U (en) | Powder metallurgy oil hydrodynamic bearing | |
| CN201908955U (en) | Pressure equalization groove structure for pneumatic bearing | |
| US7422371B2 (en) | Active hybrid FDB motor | |
| CN206280383U (en) | A kind of water lubricating thrust bearing possessing new construction | |
| CN100373063C (en) | Fluid bearing apparatus and disk rotating apparatus using the same | |
| CN205689605U (en) | A kind of magnetic lubrication sliding bearing | |
| CN205841524U (en) | Improvement type cylinder roller bearing | |
| CN201428801Y (en) | Mechanism sealing device | |
| CN205618546U (en) | Rolling bearing | |
| CN205552260U (en) | Main shaft supporting system of grinding superfinish equipment | |
| CN201916347U (en) | Hydrodynamic pressure bearing | |
| CN202125610U (en) | Mechanical seal ring for bionic scale trough | |
| CN212643328U (en) | Self-adjustable oil damping radial bearing | |
| CN102828693A (en) | Roller bit of rolling and sliding floating sleeve bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |