Método e aparelho para impedir vibraçoes em um conjunto de rolos

A method and apparatus for preventing vibrations of a roll set of a paper making apparatus, wherein the roll set comprises at least two rolls of which at least one is a soft roll coated with a compressible coating and comprising a temperature control system. According to the method the natural frequ...

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Bibliographische Detailangaben
Hauptverfasser:	KARI LUOSTARINEN, JORMA KOLIO, MARKKU SALO, ESA LEHTOVIRTA
Format:	Patent
Sprache:	por
Schlagworte:	ACCESSORIES FOR PAPER-MAKING MACHINES BEARINGS BLASTING CALENDERS ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PAPER-MAKING PRODUCTION OF CELLULOSE ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TEXTILES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A method and apparatus for preventing vibrations of a roll set of a paper making apparatus, wherein the roll set comprises at least two rolls of which at least one is a soft roll coated with a compressible coating and comprising a temperature control system. According to the method the natural frequency of the roll set is changed during the operation of the apparatus by changing the temperature of the coating of at least one soft roll. The changing of the natural frequency prevents the resonance on a natural frequency of the roll set.