Title of Invention	STRAND GUIDE ROLLER
Abstract	Abstract STRAND GUIDE ROLLER The invention relates to a strand guide roller 100 of a strand guide device for guiding a cast strand 200. The stand guide roller includes at least one first and one second sectional roller arranged next to each other, wherein the first sectional roller 110-1 has a roller journal 112-1 at its end surface adjacent to the second sectional roller. Tn addition, the strand guide roller includes a middle bearing 120-1, 120-2 between both sectional rollers 110-1 110-2 for receiving and supporting the roller journal 112-1 of the first sectional roller. In order to improve strand guidance by increasing the bearing surface for the strand 200, it is suggested, according to the invention, that the first and second sectional rollers be connected with each other outside of the middle bearing by a plug-in connection. Then, according to the invention, the middle bearing is formed simply as unsplit separate bearing with an essentially smaller window width in comparison with a split bearing.

Title of Invention

STRAND GUIDE ROLLER

Abstract

Abstract STRAND GUIDE ROLLER The invention relates to a strand guide roller 100 of a strand guide device for guiding a cast strand 200. The stand guide roller includes at least one first and one second sectional roller arranged next to each other, wherein the first sectional roller 110-1 has a roller journal 112-1 at its end surface adjacent to the second sectional roller. Tn addition, the strand guide roller includes a middle bearing 120-1, 120-2 between both sectional rollers 110-1 110-2 for receiving and supporting the roller journal 112-1 of the first sectional roller. In order to improve strand guidance by increasing the bearing surface for the strand 200, it is suggested, according to the invention, that the first and second sectional rollers be connected with each other outside of the middle bearing by a plug-in connection. Then, according to the invention, the middle bearing is formed simply as unsplit separate bearing with an essentially smaller window width in comparison with a split bearing.

Full Text	STRAND GUIDE ROLLER The invention relates to strand guide rollers of a strand guide device for guiding a cast strand e.g a slab after it leaves a strand casting mold. Publications WO 2004/094087 and WO 2005/016578 describe the state of the art with respect to strand guide devices with strand guide rollers. In all of the strand guide rollers, which are disclosed in this publication, all of the separate components, such as roller bodies or rotation-preventing elements in form, e.g., of plain keys, should be stringed on a common central shaft; therefore, the assembly and an eventual disassembly of such strand guide roller are very expensive and require use of special tools. In addition, it is very difficult to realize an inner cooling of the rollers. State-of-the art with regard to strand guide rollers which are divided once or multiple times, is disclosed in U.S. Patent No. 5,279,535. Such strand guide roller includes several sectional rollers arranged axially next to each other, with each sectional roller having two roller journals at its both ends, respectively. The two roller journals, of two arranged next to each other sectional rollers, which extend in opposite directions, are received in their respective axial bearings that typically are combined in a split middle bearing. Optionally, though this is not shown in U.S. Patent No. 5,279,535, such a middle bearing can have, between the oppositely extending roller journals, additionally, a curved-tooth gear coupling for transmission of a torque between both adjacent sectional rollers. Such split middle bearings in form of two separate, arranged next to each other, bearings with an optional curved-tooth gear coupling therebetween, are disadvantageously rather wide and, therefore, form a particular wide bearing window in which a to-be-guided and to-be-supported strand is not supported by the sectional rollers. Moreover, such middle bearings, because they are formed of a plurality of separate parts, are rather expensive. The state-of-the art is also disclosed in publications DE 75 01 394; DE 24 20 514, ended 100 24 513 Al which likewise describe strand guide rollers of a strand guide device for guiding a cast strand. All three publications disclose that a strand guide roller has at least one first and one second sectional rollers wherein the first sectional roller has, at its end surface adjacent to the second sectional roller, a roller journal. Between the second sectional roller and the roller journal, there is provided a plug-in connection for plug-in connecting the first and second sectional rollers with each other. At least German Utility Model GM 75 01 394 and German Publication DE 100 24 513 Al disclose additionally a middle bearing between both sectional rollers for receiving and supporting the roller journal of the first sectional roller, wherein the middle bearing is formed as sunspot single bearing. Proceeding from this state-of-the art, the object of the invention is to provide, in a strand guide roller with at least one first and second roller, a coupling between both rollers that can be formed as simple as possible and cost-effectively and with improved strand guidance. This object is achieved by the subject matter of claim 1. This subject matter is characterized in that the cross-section of the roller journal and the cross-section of the associated recess are formed, respectively, as polygon, and that the insert member is secured in a bore against rotation with locking pins. The formation of the cross-section of the roller journal and the cross-section of the associated recess in form of polygons provides an advantage in that both adjacent sectional rollers are connected with each other form-and forelocking for transmission of a torque. The transmission of a torque between sectional rollers is important, in particular with sectional rollers non-driven by a motor. In this case, the form-and forcelocking plug-in connection provides an advantage that consists in that when one sectional roller starts to rotate upon a contact with a transported slab, the adjacent sectional rollers rotate therewith even when they do not have any contact with the slab. The advantage of this consists in that the excessive heating and, thereby, warping and wedging of the sectional rollers is prevented. The recess is subjected to very high loads, in particular when it is formed as a polygon for transmission of a torque and, therefore, can quickly wear out, with the comers and flanks being rounded during the operation, so that the transmission of a torque is not sufficient or is not at all possible. Therefore, it is advantageous when the recess is not formed directly in the end surface of a sectional roller but instead is defined and limited by an annular insert member insertable in a bore in the end surface of a sectional roller. The advantage of the insert member consists in that it, as a wear-out part, can be economically replaced. An alternative renewing of the recess directly in the end surface of the sectional roller is, in comparison, noticeably more expensive. The middle bearing serves for supporting the first sectional roller, receiving its roller journal. To this end, the middle bearing should be formed as an unsplit single bearing. By the plug-in connection, the second sectional roller is so connected with the first sectional roller that the second sectional roller can be supported on the first sectional roller. Because of the plug-in connection with the first sectional roller, the second sectional roller does not need any separate bearing, rather the second sectional roller is supported by the plug-in connection means in or on the first sectional roller. Therefore, with the in\'entive strand guide roller, a conventional, in the state-of-the art, second bearing in the middle bearing for the second sectional roller as well as the curved-tooth gear coupling can be dispensed with. Because the middle bearing can have only one separate bearing, the width of the middle bearing and, therefore, the window width between both adjacent sectional rollers can be reduced in comparison with the state-of-the-art. The advantage of this consists in that the bearing surface for the slab is increased, whereby the guiding and support flinction of the strand guide roller for the slab is improved. It is advantageous when the middle bearing is formed as a single bearing, preferably in form of a standard bearing, which makes it more cost-effective than a split bearing. Jn addition, with the inventive embodiment of the strand guide roller, the sectional rollers can be easily assembled and disassembled. The provision of the cooling channel in the sectional rollers has the advantage in that they would not overheat; the amount of a possible cooling can be influenced by the number of channels. When the cooling channel has an inner tube the outer diameter of which is smaller than the inner diameter of the cooling channel, the inner tube forms a first cooling conduit, and the intermediate space between the inner tube and the cooling channel forms the second cooling conduit. In the first and second cooling channels, the cooling medium can flow In opposite directions. The invention relates to both driven and non-driven strand guide rollers. Further advantageous embodiments of the strand guide roller form the subject matter of dependent claims. The description is accompanied by five Figures, wherein: Fig. 1 is a first embodiment of the inventive strand guide roller; Fig. 2 is a cross-section of the strand guide roller according to the first embodiment; We claim: 1. A strand guide roller (100) of a strand guide device for guiding a cast strand (200) e.g., a slab, comprising; at least one first and one second sectional roller (110-1, 110-2) arranged next to each other, wherein the first sectional roller (110-1) has a roller journal (112-1) on its end surface adjacent to the second sectional roller (110-2); and at least one middle bearing (120-1, 120-2) in form of an unplug single bearing between both sectional rollers (110-1, 110-2) for receiving and supporting the roller journal (112-1) of the first sectional roller; wherein between the second sectional roller (110-2) and the roller journal (112-1) of the first sectional roller (110-1), a plug-in connection is formed for plug-in connecting the first and the second sectional roller with each other, and wherein the plug-in connection is so formed that the second sectional roller (110-2) has, in an surface (114-2) thereof adjacent to the first sectional roller (110-1), a bore with an insert member (130) inserted therein and in the center of which a recess, which is adapted for receiving the roller journal of the first sectional roller is formed, characterized in that a cross-section of the roller journal (112-1) and the cross-section of associated recess are formed as a polygon, respectively; and the insert member (130) is secured in the bore against rotation with locking pins (132). 2. A strand guide roller (100) according to claim 1, characterized in that an axial and/or extending parallel to the axis, cooling channel (140) extends through both sectional rollers (110-1, 110-2) for conducting a cooling medium. 3. A strand guide roller (100) according to claim 2, characterized in that an inner tube (142), an outer diameter of which is smaller than an inner diameter of the cooling channel (140), extends in the cooling channel (140). 4. A strand guide roller (100) according to one of claims 1 through 3, characterized in that both adjacent sectional rollers (110-1, 110-2) have, respectively, a separate cooling wherein both sectional rollers are sealed against each other in the region of the middle bearing (120). 5. A strand guide roller (100) according to one of the preceding claims, characterized by a drive (150) for driving the strand guide roller (100).

Full Text

STRAND GUIDE ROLLER
The invention relates to strand guide rollers of a strand guide device for guiding a cast strand e.g a slab after it leaves a strand casting mold.
Publications WO 2004/094087 and WO 2005/016578 describe the state of the art with respect to strand guide devices with strand guide rollers. In all of the strand guide rollers, which are disclosed in this publication, all of the separate components, such as roller bodies or rotation-preventing elements in form, e.g., of plain keys, should be stringed on a common central shaft; therefore, the assembly and an eventual disassembly of such strand guide roller are very expensive and require use of special tools. In addition, it is very difficult to realize an inner cooling of the rollers.
State-of-the art with regard to strand guide rollers which are divided once or multiple times, is disclosed in U.S. Patent No. 5,279,535. Such strand guide roller includes several sectional rollers arranged axially next to each other, with each sectional roller having two roller journals at its both ends, respectively. The two roller journals, of two arranged next to each other sectional rollers,

which extend in opposite directions, are received in their respective axial bearings that typically are combined in a split middle bearing.
Optionally, though this is not shown in U.S. Patent No. 5,279,535, such a middle bearing can have, between the oppositely extending roller journals, additionally, a curved-tooth gear coupling for transmission of a torque between both adjacent sectional rollers.
Such split middle bearings in form of two separate, arranged next to each other, bearings with an optional curved-tooth gear coupling therebetween, are disadvantageously rather wide and, therefore, form a particular wide bearing window in which a to-be-guided and to-be-supported strand is not supported by the sectional rollers. Moreover, such middle bearings, because they are formed of a plurality of separate parts, are rather expensive.
The state-of-the art is also disclosed in publications DE 75 01 394; DE 24 20 514, ended 100 24 513 Al which likewise describe strand guide rollers of a strand guide device for guiding a cast strand. All three publications disclose that a strand guide roller has at least one first and one second sectional rollers wherein the first sectional roller has, at its end surface adjacent to the second

sectional roller, a roller journal. Between the second sectional roller and the roller journal, there is provided a plug-in connection for plug-in connecting the first and second sectional rollers with each other. At least German Utility Model GM 75 01 394 and German Publication DE 100 24 513 Al disclose additionally a middle bearing between both sectional rollers for receiving and supporting the roller journal of the first sectional roller, wherein the middle bearing is formed as sunspot single bearing.
Proceeding from this state-of-the art, the object of the invention is to provide, in a strand guide roller with at least one first and second roller, a coupling between both rollers that can be formed as simple as possible and cost-effectively and with improved strand guidance.
This object is achieved by the subject matter of claim 1. This subject matter is characterized in that the cross-section of the roller journal and the cross-section of the associated recess are formed, respectively, as polygon, and that the insert member is secured in a bore against rotation with locking pins.
The formation of the cross-section of the roller journal and the cross-section of the associated recess in form of polygons provides an advantage in that both

adjacent sectional rollers are connected with each other form-and forelocking for transmission of a torque. The transmission of a torque between sectional rollers is important, in particular with sectional rollers non-driven by a motor. In this case, the form-and forcelocking plug-in connection provides an advantage that consists in that when one sectional roller starts to rotate upon a contact with a transported slab, the adjacent sectional rollers rotate therewith even when they do not have any contact with the slab. The advantage of this consists in that the excessive heating and, thereby, warping and wedging of the sectional rollers is prevented.
The recess is subjected to very high loads, in particular when it is formed as a polygon for transmission of a torque and, therefore, can quickly wear out, with the comers and flanks being rounded during the operation, so that the transmission of a torque is not sufficient or is not at all possible. Therefore, it is advantageous when the recess is not formed directly in the end surface of a sectional roller but instead is defined and limited by an annular insert member insertable in a bore in the end surface of a sectional roller. The advantage of the insert member consists in that it, as a wear-out part, can be economically

replaced. An alternative renewing of the recess directly in the end surface of the sectional roller is, in comparison, noticeably more expensive.
The middle bearing serves for supporting the first sectional roller, receiving its roller journal. To this end, the middle bearing should be formed as an unsplit single bearing. By the plug-in connection, the second sectional roller is so connected with the first sectional roller that the second sectional roller can be supported on the first sectional roller. Because of the plug-in connection with the first sectional roller, the second sectional roller does not need any separate bearing, rather the second sectional roller is supported by the plug-in connection means in or on the first sectional roller. Therefore, with the in\'entive strand guide roller, a conventional, in the state-of-the art, second bearing in the middle bearing for the second sectional roller as well as the curved-tooth gear coupling can be dispensed with. Because the middle bearing can have only one separate bearing, the width of the middle bearing and, therefore, the window width between both adjacent sectional rollers can be reduced in comparison with the state-of-the-art. The advantage of this consists in that the bearing surface for the slab is increased, whereby the guiding and support flinction of the strand guide roller for the slab is improved.

It is advantageous when the middle bearing is formed as a single bearing, preferably in form of a standard bearing, which makes it more cost-effective than a split bearing. Jn addition, with the inventive embodiment of the strand guide roller, the sectional rollers can be easily assembled and disassembled.
The provision of the cooling channel in the sectional rollers has the advantage in that they would not overheat; the amount of a possible cooling can be influenced by the number of channels. When the cooling channel has an inner tube the outer diameter of which is smaller than the inner diameter of the cooling channel, the inner tube forms a first cooling conduit, and the intermediate space between the inner tube and the cooling channel forms the second cooling conduit. In the first and second cooling channels, the cooling medium can flow In opposite directions. The invention relates to both driven and non-driven strand guide rollers.
Further advantageous embodiments of the strand guide roller form the subject matter of dependent claims.
The description is accompanied by five Figures, wherein:

Fig. 1 is a first embodiment of the inventive strand guide roller;
Fig. 2 is a cross-section of the strand guide roller according to the first embodiment;

We claim:
1. A strand guide roller (100) of a strand guide device for guiding a cast strand (200) e.g., a slab, comprising;
at least one first and one second sectional roller (110-1, 110-2) arranged next to each other, wherein the first sectional roller (110-1) has a roller journal (112-1) on its end surface adjacent to the second sectional roller (110-2); and
at least one middle bearing (120-1, 120-2) in form of an unplug single bearing between both sectional rollers (110-1, 110-2) for receiving and supporting the roller journal (112-1) of the first sectional roller;
wherein between the second sectional roller (110-2) and the roller journal (112-1) of the first sectional roller (110-1), a plug-in connection is formed for plug-in connecting the first and the second sectional roller with each other, and wherein the plug-in connection is so formed that the second sectional roller (110-2) has, in an surface (114-2) thereof adjacent to the first sectional roller (110-1), a bore with an insert member (130) inserted therein and in the center of which a recess, which is

adapted for receiving the roller journal of the first sectional roller is
formed,
characterized in that
a cross-section of the roller journal (112-1) and the cross-section of associated recess are formed as a polygon, respectively; and the insert member (130) is secured in the bore against rotation with locking pins (132).
2. A strand guide roller (100) according to claim 1,
characterized in that
an axial and/or extending parallel to the axis, cooling channel (140) extends through both sectional rollers (110-1, 110-2) for conducting a cooling medium.
3. A strand guide roller (100) according to claim 2,
characterized in that

an inner tube (142), an outer diameter of which is smaller than an inner diameter of the cooling channel (140), extends in the cooling channel (140).
4. A strand guide roller (100) according to one of claims 1 through 3,
characterized in that
both adjacent sectional rollers (110-1, 110-2) have, respectively, a separate cooling wherein both sectional rollers are sealed against each other in the region of the middle bearing (120).
5. A strand guide roller (100) according to one of the preceding claims,
characterized by
a drive (150) for driving the strand guide roller (100).

Documents:

5676-CHENP-2008 CORRESPONDENCE OTHERS 04-12-2014.pdf

5676-CHENP-2008 CORRESPONDENCE OTHERS 29-11-2013.pdf

5676-CHENP-2008 CORRESPONDENCE OTHERS 12-12-2013.pdf

5676-CHENP-2008 FORM-1 18-08-2014.pdf

5676-CHENP-2008 FORM-13 18-08-2014.pdf

5676-CHENP-2008 FORM-3 29-11-2013.pdf

5676-CHENP-2008 FORM-3 12-12-2013.pdf

5676-CHENP-2008 AMENDED CLAIMS 18-08-2014.pdf

5676-CHENP-2008 AMENDED PAGES OF SPECIFICATION 18-08-2014.pdf

5676-CHENP-2008 CORRESPONDENCE OTHERS 11-02-2014.pdf

5676-CHENP-2008 EXAMINATION REPORT REPLY RECEIVED 18-08-2014.pdf

5676-CHENP-2008 FORM-3 18-08-2014.pdf

5676-CHENP-2008 - FORM 13.pdf

5676-CHENP-2008 - Petition 137 Annex Form 3.pdf

5676-CHENP-2008 - Petiton 137 - POR.pdf

5676-CHENP-2008 - Spec.pdf

5676-chenp-2008 abstract.pdf

5676-CHENP-2008 AMENDED CLAIMS 18-08-2014.pdf

5676-chenp-2008 claims.pdf

5676-chenp-2008 correspondnece-others.pdf

5676-chenp-2008 description(complete).pdf

5676-chenp-2008 drawings.pdf

5676-chenp-2008 form-1.pdf

5676-CHENP-2008 FORM-13 20-08-2009.pdf

5676-chenp-2008 form-18.pdf

5676-chenp-2008 form-3.pdf

5676-chenp-2008 form-5.pdf

5676-chenp-2008 pct.pdf

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Patent Number

265411

Indian Patent Application Number

5676/CHENP/2008

PG Journal Number

09/2015

Publication Date

27-Feb-2015

Grant Date

24-Feb-2015

Date of Filing

21-Oct-2008

Name of Patentee

SMS SIEMAG AKTIENGESELLSCHAFT

Applicant Address

EDUARD-SCHLOEMANN-STRASSE 4, 40237 DUSSELDORF,

Inventors:

#	Inventor's Name	Inventor's Address
1	GIRGENSSOHN, ALBRECHT,	WESTSTRASSE 15, 40597 DUSSELDORF,
2	HOVESTADT, ERICH,	BOLTZMANNSTRASE 1, 46314 RHEDE
3	BEKURTS, AXEL,	BONHOEFFERWEG 18, 45470 MULHEIM,
4	STAVENOW, AXEL	DORNAPER STRASSE 8, 40625 DUSSELDORF,
5	MANGLER, DIRK,	NEPTUNSTRASSE 46, D-47877 WILLICH,

PCT International Classification Number

B22D 11/128

PCT International Application Number

PCT/EP07/02859

PCT International Filing date

2007-03-30

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	102006040011.9	2006-08-25	Germany
2	102006019147.1	2006-04-21	Germany