F - Mech Eng,Light,Heat,Weapons – 16 – C
Patent
F - Mech Eng,Light,Heat,Weapons
16
C
F16C 13/00 (2006.01) D21F 3/08 (2006.01) D21G 1/02 (2006.01)
Patent
CA 2183482
A method for regulating the loading of an adjustable-crown roll having a stationary roll axle around which a roll mantle is rotatingly mounted, and by means of which roll a nip is formed with a backup roll. The deflection of the roll mantle and/or the linear load in the nip is regulated by loading elements and a backup zone supported on the roll axle and acting upon the inner face of the roll mantle in the direction of the nip plane. Upon the inner face of the roll mantle of the roll by means of the backup zone/zones, a sum force is produced which acts in the nip plane in a direction substantially opposite to the force produced by the loading element, and the force effect applied by the backup zone/zones to the inner face of the roll mantle is applied, examined in the direction of the circumference, to more than one point. The adjustable-crown roll forms a nip with a backup roll and includes a stationary roll axle around which a roll mantle is arranged revolving, between which roll mantle and roll axle loading elements and backup zones are arranged to act upon the inner face of the roll mantle and are supported on the roll axle. The backup zones supported on the roll axle are formed of at least two rows of backup-zone elements or by a backup chamber or by at least one row of backup-zone elements and a backup chamber. The sum force produced by the elements or chamber in the nip plane is in a direction substantially opposite to the force produced by the row of loading elements.
Metso Paper Inc.
Sim & Mcburney
Valmet Corporation
LandOfFree
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