Supporting beam for a foil in a paper machine

Details Supporting beam for a foil in a paper machine Supporting beam for a foil in a paper machine

1982-10-25

1985-08-27

Alvo, Steve

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162374, 248559, D21C 148, D21G 700, D21G 900

Patent

active

045376590

ABSTRACT:
A supporting beam for a paper machine foil or the like is constituted by a horizontal box-type beam, the height of which is in the range of about 1.3 to 2.5 times the breadth of the beam and the side walls of which extend substantially perpendicularly to the run of the paper machine wire which passes over the foil supported by the beam. According to the invention, to reduce the vibrations of the supporting beam, stiffener members are disposed in the rearward upper and forward lower quadrants of the interior of the beam extending parallel to the longitudinal axis thereof. The stiffener members function to incline the principal axes of inertia of the beam at a small positive angle to the vertical and horizontal planes passing through the center of gravity of the beam relative to the direction of run of the paper machine wire. The stiffener members are situated on the inwardly facing surfaces of the vertical side walls of the beam and preferably extend substantially over the entire length of the beam. The stiffener member situated in the rearward upper quadrant is located proximate to the top side wall of the beam and the stiffener member situated in the forward lower quadrant is located close to the lower corner of the beam.

REFERENCES:
patent: 2978213 (1981-04-01), Kass
patent: 3393124 (1968-07-01), Kingler et al.
patent: 3535204 (1970-10-01), Truxa
patent: 3762991 (1973-10-01), Justus
patent: 4061532 (1977-12-01), Biondetti
patent: 4162937 (1979-07-01), Corbellini
patent: 4203546 (1980-05-01), Raquet et al.

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