Device for strip guidance in a hot medium (II)

Patent metadata

Field	Value
Publication number	US-9737921-B2
Application number	US-201313261972-A
Country	US
Kind code	B2
Filing date	Apr 11, 2013
Priority date	Apr 12, 2012
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller ( 3, 38 ) which has two roller pins ( 23, 39 ) and is mounted to supporting arms ( 1, 2, 34, 37, 54, 57 ) by means of ceramic journal bearings ( 20, 31 ), wherein the journal bearings ( 20, 31 ) are in each case arranged in a bearing receptacle ( 45, 55 ) of the associated supporting arm ( 1, 2, 34, 37, 54, 57 ). The invention is characterized in that at least one of the journal bearings ( 20, 31 ) in its associated supporting arm ( 1, 2, 34, 37, 54, 57 ) is fixed in the bearing receptacle ( 45, 55 ) by means of a force-fit that engages on the outer edge of the journal bearing ( 20, 31 ) and balances the different heat expansion coefficients of the journal bearings ( 20, 31 ) and the bearing receptacle ( 45, 55 ).

First claim

The invention claimed is:

1. A device for strip guidance in a hot medium, comprising a deflection roller ( 3 , 38 ) which has two roller journals ( 23 , 39 ) which are mounted by means of ceramic journal bearings ( 20 , 31 ) on supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ) each of which has a bearing receptacle ( 45 , 55 ), the journal bearings ( 20 , 31 ) being supported in the bearing receptacles ( 45 , 55 ),
wherein at least one of the journal bearings ( 20 , 31 ) is fixed in at least one of the bearing receptacles ( 45 , 55 ) by means of a non-positive lock so that the at least one of the bearing receptacles ( 45 , 55 ) frictionally engages an outer edge of the at least one of the journal bearings ( 20 , 31 ) and compensates for different coefficients of thermal expansion of the at least one of the journal bearings ( 20 , 31 ) and the at least one of the bearing receptacles ( 45 , 55 ),
wherein at least one of the journal bearings ( 20 , 31 ) is fixed to at least one of the supporting arms by means of a clamping body ( 35 , 46 ) which engages on the at least one of the journal bearings ( 20 , 31 ) and on the at least one of the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ) so that the at least one of the journal bearings ( 20 , 31 ) is clamped against the at least one of the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ), and
wherein the clamping body ( 35 , 46 ) has a higher coefficient of thermal expansion compared to the material of the at least one of the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ).

2. The device as claimed in claim 1 , wherein the clamping body ( 35 , 46 ) has a bar shape.

3. The device as claimed in claim 1 , wherein at least one of the journal bearings ( 20 , 31 ) is unencapsulated with respect to the hot medium,
wherein there is a bearing gap ( 25 ) between the at least one of the journal bearings ( 20 , 31 ) and at least one of the roller journals ( 23 , 39 ), and
wherein the bearing gap ( 25 ) is sealed off against the penetration of molten material.

4. The device as claimed in claim 3 wherein at least one elastic sealing disk ( 29 , 30 ) is provided for sealing off the bearing gap ( 25 ) and the at least one elastic sealing disk is fixed against movement along an axis of the journal bearing:( 20 , 31 ).

5. The device as claimed in claim 4 , wherein the at least one elastic sealing disk ( 29 ) comprises graphite or consists of graphite.

6. The device as claimed in claim 1 , wherein one of the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ) is mounted on a carrier device by means of a floating bearing ( 5 ), wherein the floating bearing ( 5 ) allows the one of the supporting arms mounted thereby on the carrier device to move along a path parallel to an axis of the deflection roller ( 3 , 38 ), and
wherein an elastic counterelement ( 12 ) acting in a direction parallel to the axis of the deflection roller ( 3 , 38 ) on the supporting arm ( 1 , 2 , 34 , 37 , 54 , 57 ) mounted on the floating bearing ( 5 ) is present and counteracts an increasing distance between the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ).

7. The device as claimed in claim 6 , including fixing means for fixing the supporting arm ( 1 , 2 , 34 , 37 , 54 , 57 ) mounted by means of the floating bearing ( 5 ) on the carrier device.

8. The device as claimed in claim 6 , wherein a supporting arm stop element ( 15 ) adjustable in position is present for limiting the movement of the supporting arm ( 1 , 2 , 34 , 37 , 54 , 57 ) mounted on the floating bearing ( 5 ).

9. A device for strip guidance in a hot medium, comprising a deflection roller ( 3 , 38 ) which has two roller journals ( 23 , 39 ) which are mounted by means of ceramic journal bearings ( 20 ; 31 ) on supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ), each of which has a bearing receptacle ( 45 , 55 ), the journal bearings ( 20 , 31 ) being supported in the bearing receptacles ( 45 , 55 ),
wherein at least one of the journal bearings ( 20 , 31 ) is fixed in at least one of the bearing receptacles ( 45 , 55 ) by means of a non-positive lock so that the at least one of the bearing receptacles ( 45 , 55 ) frictionally engages an outer edge of the at least one of the journal bearings ( 20 , 31 ) and compensates for different coefficients of thermal expansion of the at least one of the journal bearing ( 20 , 31 ) and of the at least one of the bearing receptacles ( 45 , 55 ),
wherein at least one of the journal bearings ( 20 , 31 ) is fixed to at least one of the supporting arms by means of a clamping body ( 35 , 46 ) which engages on the at least one of the journal bearings ( 20 , 31 ) and on the at least one of the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ),
wherein the clamping body ( 35 , 46 ) has an annular shape, and
wherein the annularly shaped clamping body ( 35 , 46 ) comprises at least one wedge-shaped wedge piece ( 47 ).

10. The device as claimed in claim 9 , including an elastic spring element ( 50 ) acting on the clamping body ( 35 , 46 ) in the axial direction.

11. The device as claimed in claim 9 , wherein at least one of the journal bearings ( 20 , 31 ) is unencapsulated with respect to the hot medium,
wherein there is a bearing gap ( 25 ) between the at least one of the journal bearings ( 20 , 31 ) and at least one of the roller journals ( 23 , 39 ), and
wherein the bearing gap ( 25 ) is sealed off against the penetration of molten material.

12. The device as claimed in claim 11 , wherein at least one elastic sealing disk ( 29 , 30 ) is provided for sealing off the bearing gap ( 25 ) and the at least one elastic sealing disk is fixed against movement along an axis of the journal bearing ( 20 , 31 ).

13. The device as claimed in claim 12 , wherein the at least one elastic sealing disk ( 29 ) comprises graphite or consists of graphite.

14. The device as claimed in claim 9 , wherein one of the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ) is mounted on a carrier device by means of a floating bearing ( 5 ), wherein the floating bearing ( 5 ) allows the supporting arm mounted thereby on the carrier device to move along a path parallel to an axis of the deflection roller ( 3 , 38 ), and
wherein an elastic counterelement ( 12 ) acting in a direction parallel to the axis of the deflection roller ( 3 , 38 ) on the supporting arm ( 1 , 2 , 34 , 37 , 54 , 57 ) mounted on the floating bearing ( 5 ) is present and counteracts an increasing distance between the supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ).

15. The device as claimed in claim 14 , including fixing means for fixing the supporting arm ( 1 , 2 , 34 , 37 , 54 , 57 ) mounted by means of the floating bearing ( 5 ) on the carrier device.

16. The device as claimed in claim 14 , wherein a supporting arm stop element ( 15 ) adjustable in position is present for limiting the movement of the supporting arm ( 1 , 2 , 34 , 37 , 54 , 57 ) mounted on the floating bearing ( 5 ).

17. A device for strip guidance in a hot medium, comprising a deflection roller ( 3 , 38 ) which has two roller journals ( 23 , 39 ) which are mounted by means of ceramic journal bearings ( 20 , 31 ) on supporting arms ( 1 , 2 , 34 , 37 , 54 , 57 ), each of which has a bearing receptacle ( 45 , 55 ), the journal bearings ( 20 , 31 ) being supported in the bearing receptacles ( 45 , 55 ),
wherein at least one of the journal bearings ( 20 , 31 ) is fixed in at least one of the bearing receptacles by means of a non-positive lock so that the at least one of the beari

Assignees

• CEROBEAR GmbH
• Thyssenkrupp Steel Europe Ag

Inventors

• Blumenau Marc
• Eisner Frank
• Gusek Christopher
• Jindra Fred
• Schoenenberg Rudolf
• Willeke Bert-Reiner
• Denner Tobias
• Klatt Christian
• Wemhoener Jens

Classifications

• F16C13/02 Primary

  Bearings · CPC title

• F16C17/08

  for supporting the end face of a shaft or other member, e.g. footstep bearings · CPC title

• B21B31/02 Primary

  Rolling stand frames {or housings}; Roll mountings {; Roll chocks} · CPC title

• F16C17/02

  for radial load only · CPC title

• F16C21/00

  Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement (F16C17/24, F16C19/52 take precedence) · CPC title