ARRANGEMENT FOR ATTENUATING VIBRATION OF A ROLL ASSEMBLY

ARRANGEMENT FOR ATTENUATING VIBRATION OF A ROLL ASSEMBLY

An arrangement of attenuating the vibration in a roll assembly of a fiber web machine, in which assembly the roll (10) being rotatably suspended at i ts end on bearings in bearing housings (13a, 13b), and the bearing housings being supported on the frame or the foundation of the machine via viscoela...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PENTTILA, KIMMO, JORKAMA, MARKO
Format: Patent
Sprache:eng ; fre
Schlagworte:
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES
PACKING
PERFORMING OPERATIONS
STORING
TRANSPORTING
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Beschreibung
Zusammenfassung:An arrangement of attenuating the vibration in a roll assembly of a fiber web machine, in which assembly the roll (10) being rotatably suspended at i ts end on bearings in bearing housings (13a, 13b), and the bearing housings being supported on the frame or the foundation of the machine via viscoelast ic intermediate piece or pieces (21a, 21b). According to the invention the l oss factor of the intermediate piece is greater than 0.1 at the normal opera ting conditions of the roll at a frequency range, which is ±10 % calculated from the lowest bending eigenfrequency of the roll, and in the each end of t he rolthe spring constant of the total influence of the intermediate piece o r pieces is in the range of 0.04 GN/m - lGN/m.