CN1301809C - Triple bearing arrangement for cantilevered roll shafts - Google Patents
Triple bearing arrangement for cantilevered roll shafts Download PDFInfo
- Publication number
- CN1301809C CN1301809C CNB2004100456097A CN200410045609A CN1301809C CN 1301809 C CN1301809 C CN 1301809C CN B2004100456097 A CNB2004100456097 A CN B2004100456097A CN 200410045609 A CN200410045609 A CN 200410045609A CN 1301809 C CN1301809 C CN 1301809C
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- CN
- China
- Prior art keywords
- bearing
- adjusting sleeve
- eccentric adjusting
- roll
- roll 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
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- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
A rolling mill roll stand comprises parallel roll shafts rotatably supported by axially spaced first and second bearings contained in parallel eccentric sleeves. The eccentric sleeves are rotatably supported in a housing and the roll shafts have cantilevered ends that project externally from one side of the housing and that are adapted to carry work rolls. Third oil film bearings are contained by the eccentric sleeves and are arranged to rotatably support the roll shafts at intermediate locations between and spaced axially from both the first and second bearings.
Description
Technical field
The present invention relates generally to the milling train of product that is used for rolling length such as bar, rod and the like, specifically, relates to the improvement to so-called " cantilever " roll stand, and wherein, work roll is installed on the supporting the tip of the axis.
Background technology
The work roll of cantilever is installed on the parallel support the tip of the axis traditionally.All axles is bearing in by axle journal ground and is contained in work in the eccentric adjusting sleeve, axially spaced-apart and the transmission side bearing to rotate, and eccentric adjusting sleeve is installed in again in the shell box, so that rotate adjustment.Roll shaft carries all gears, and these arrangement of gears become all gears engaged with the milling train transmission device, and rotating eccentric sleeve tube side by side in opposite direction, work roll is carried out the adjustment of symmetry with respect to roll line.
Can be for the more detailed description of this traditional structure with reference to U.S. Patent No. Re28,107, this paper quotes this patent for your guidance.
Along with the more appearance of small diameter work roll, the roll shaft diameter also must reduce, and causes the length of axle to compare the undue length that seems with the diameter of axle.Although two traditional bearing arrangements can quite reasonably satisfy the requirement of intensity, it does not satisfy the requirement of rigidity, so that the deflection of axle becomes a problem.
A kind of method that addresses this problem is disclosed in U.S. Patent No. 6,561, among 003 (Grimmel).Here, between traditional work and transmission side bearing, adopt pressure house.Pressure house adopts hydrostatic pressure to load also remote control and offsets its trend at deflection under load thus with the prestrain axle.Except crossing to complicated and the costliness, this rigidity of structure is not enough, and this is because roll shaft is only comprised by pressure house, and the latter lacks the critical radial support that applies from shell box on every side.
Summary of the invention
According to the present invention,, provide extra axle rigidity by between traditional work and transmission side bearing, the 3rd bearing being set.The 3rd bearing belongs to " oil film " type, and wherein, axle is bearing in the fluid dynamic mode with axle journal and remains on the oil film of bearing loading location, to rotate.Filmatic bearing has the rigidity of automodulation, and the increase of rigidity is proportional to the off-centre of bearing, need not to introduce compressed oil in the mode of controlling hydrostatic pressure individually.In addition, the 3rd bearing is radially supported by eccentric adjusting sleeve and shell box, therefore, compares with the structure of known systems, and the rigidity of increase is provided.
Now above and other features and advantages of the present invention are described in further detail with reference to all accompanying drawings.
Description of drawings
Fig. 1 is the longitdinal cross-section diagram that passes the cantilever roll stand intercepting of implementing theory of the present invention;
Fig. 2 is the cross-sectional view along the line 2-2 intercepting of Fig. 1;
Fig. 3 is the view of the amplification of Fig. 2 part; And
Fig. 4 is how rigidity that the 3rd filmatic bearing is shown is proportional to the bearing degree of eccentricity and the curve map that improves.
The specific embodiment
At first with reference to Fig. 1 and 2, roll shaft 10 is comprised in transmission and 12,14 supportings of active side sleeve bearing in the eccentric adjusting sleeve 16 rotationally.Eccentric adjusting sleeve axle journal ground supporting in shell box 18 is adjusted rotationally so that rotate also.The outboard end 10a of the cantilever of roll shaft is configured to support the work roll (not shown), and the medial extremity of cantilever carries all gears 20, and these gear configurations mesh with the travelling gear (not shown) that is arranged to the milling train transmission device.
Be bearing on the 3rd bearing 22 that is included in eccentric adjusting sleeve 16 mid portions so that rotate the mid portion axle journal of roll shaft, and the mid portion of eccentric adjusting sleeve be contained in the shell box and therefore tightly supported by the shell box solidly.Bearing 22 is socket types, is lubricated by oil, and the rotation of axle forms hydrokinetic oil film in the loading location of bearing.
Specifically, as from Fig. 3 clearly as seen, shell box 18 is provided with an access road 24, it be included in eccentric adjusting sleeve 16 in the hole in deep-slotted chip breaker 26 be communicated with.One radial passage 28 is directed to second deep-slotted chip breaker 30 hole of eccentric adjusting sleeve from groove 26.Sleeve bearing 22 has the radial passage 32 that is communicated with groove 30.
In the process of roll stand operation, oil is fed in the operating clearance by passage 24, groove 26, passage 28, groove 30 and passage 32, and this gap is between the inner bearing surface of the journal surface of axle 10 and sleeve 22.In the loading zone of bearing, form a wedge film flow of oil power.
When roll shaft is applied on the work roll of cantilever bearing load because of separating force, the deflection of axle will be subjected to the opposing of bearing 22.Because roll shaft is tending towards deflection under load, so Fig. 4 illustrates bearing 22, and how fluid dynamic ground increases rigidity in response to the degree of eccentricity of the increase of the journal surface in the bearing.The increase of bearing rigidity is automodulation, does not need to exert pressure individually oil, does not also need remote control.
Eccentric adjusting sleeve 16 designs very firmly, and extend between all transmissions and active side bearing continuously the intermediate portion.The equilibrant force of the automodulation that this forms by the support of shell box and by bearing 22 in conjunction with the eccentric adjusting sleeve mid portion, all these helps to improve widely the integral rigidity of roller assembly.
Claims (5)
1. the roll stand of a milling train, it comprises:
Parallel roll shaft, it is rotationally by first and second bearings supporting at interval vertically;
The parallel eccentric adjusting sleeve that comprises described bearing, described eccentric adjusting sleeve are rotatably supported in the shell, and described roll shaft has the cantilever end of giving prominence to and be suitable for carrying work roll outside a side direction of described shell; And
The 3rd bearing that is comprised by described eccentric adjusting sleeve, described the 3rd bearing is arranged between described first and second supportings, also locates the described roll shaft of rotatably support with the isolated middle part of described first and second bearings vertically, to be bearing in described shell interior with rotation described eccentric adjusting sleeve axle journal, and radially supported by described shell at place, described middle part.
2. roll stand as claimed in claim 1 is characterized in that, described the 3rd bearing is a filmatic bearing.
3. roll stand as claimed in claim 1 is characterized in that, described roll shaft has from the second outwards outstanding cantilever end of the opposite side of described shell, and described second cantilever end is suitable for supporting travelling gear.
4. roll stand as claimed in claim 1 is characterized in that, described the 3rd bearing is the sleeve bearing of oil lubrication, and it has the degree of eccentricity that is proportional to the journal surface in the described bearing and the rigidity of the automodulation that increases.
5. the roll stand of a milling train, it comprises:
Parallel roll shaft, it is rotationally by isolated first and second bearings supporting vertically;
The parallel eccentric adjusting sleeve that comprises described bearing, described eccentric adjusting sleeve are rotatably supported in the shell, and described roll shaft has the cantilever end of giving prominence to and be suitable for carrying work roll outside a side direction of described shell; And
The 3rd bearing that is comprised by described eccentric adjusting sleeve, described the 3rd bearing is arranged between described first and second supportings, also locates the described roll shaft of rotatably support with the isolated middle part of described first and second bearings vertically, described the 3rd bearing is the sleeve bearing of oil lubrication, and it has the degree of eccentricity that is proportional to its corresponding journal surface and the rigidity of the automodulation that increases.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/828,945 US6959579B2 (en) | 2003-05-08 | 2004-04-21 | Triple bearing arrangement for cantilevered roll shafts |
| US10/828945 | 2004-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1689722A CN1689722A (en) | 2005-11-02 |
| CN1301809C true CN1301809C (en) | 2007-02-28 |
Family
ID=35345652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100456097A Expired - Fee Related CN1301809C (en) | 2004-04-21 | 2004-08-18 | Triple bearing arrangement for cantilevered roll shafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1301809C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272851A (en) * | 2013-05-20 | 2013-09-04 | 浙江朋诚科技有限公司 | High-speed mill roller box |
| CN103272848B (en) * | 2013-05-20 | 2015-12-02 | 浙江朋诚科技有限公司 | A kind of fast mill roll shaft |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3491571A (en) * | 1966-02-14 | 1970-01-27 | United Eng Foundry Co | Rolling mill method and apparatus |
| US4666317A (en) * | 1985-03-16 | 1987-05-19 | Kocks Technik Gmbh & Co. | Bearing assemblies for rotating shafts |
| JPS6384707A (en) * | 1986-09-26 | 1988-04-15 | Kobe Steel Ltd | Bearing device for rolling mill |
| EP0824045A2 (en) * | 1996-07-18 | 1998-02-18 | Sms Schloemann-Siemag Aktiengesellschaft | Eccentric bearing bush for roll shaft |
| CN1253526A (en) * | 1997-04-24 | 2000-05-17 | 赫伯特·伦珀 | Dynamic crown control back-up roll assembly |
| US6561003B2 (en) * | 2000-09-20 | 2003-05-13 | Sms Demag Aktiengesellschaft | Support system for cantilevered-roll shafts |
-
2004
- 2004-08-18 CN CNB2004100456097A patent/CN1301809C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3491571A (en) * | 1966-02-14 | 1970-01-27 | United Eng Foundry Co | Rolling mill method and apparatus |
| US4666317A (en) * | 1985-03-16 | 1987-05-19 | Kocks Technik Gmbh & Co. | Bearing assemblies for rotating shafts |
| JPS6384707A (en) * | 1986-09-26 | 1988-04-15 | Kobe Steel Ltd | Bearing device for rolling mill |
| EP0824045A2 (en) * | 1996-07-18 | 1998-02-18 | Sms Schloemann-Siemag Aktiengesellschaft | Eccentric bearing bush for roll shaft |
| CN1253526A (en) * | 1997-04-24 | 2000-05-17 | 赫伯特·伦珀 | Dynamic crown control back-up roll assembly |
| US6561003B2 (en) * | 2000-09-20 | 2003-05-13 | Sms Demag Aktiengesellschaft | Support system for cantilevered-roll shafts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1689722A (en) | 2005-11-02 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SIEMENS BUILDING TECH AG Free format text: FORMER OWNER: MORGAN CONSTRUCTION CO. Effective date: 20100906 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: MASSACHUSETTS, UNITED STATES TO: GEORGIA, UNITED STATES |
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| TR01 | Transfer of patent right |
Effective date of registration: 20100906 Address after: American Georgia Patentee after: Siemens Building Tech AG Address before: Massachusetts, USA Patentee before: Morgan Construction Co. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161227 Address after: American Georgia Patentee after: Metal technology America Limited Address before: American Georgia Patentee before: Siemens Industry Inc. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070228 Termination date: 20170818 |
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| CF01 | Termination of patent right due to non-payment of annual fee |