Hydrostatically supported sag-compensation roll, in...

Details Hydrostatically supported sag-compensation roll, in... Hydrostatically supported sag-compensation roll, in...

D - Textiles, Paper

21

G

D21G 1/02 (2006.01) F16C 13/00 (2006.01)

Patent

CA 2092723

HYDROSTATICALLY SUPPORTED SAG-COMPENSATION ROLL, IN PARTICULAR FOR PAPER MANUFACTURING MACHINES ABSTRACT The invention relates to a sag-compensation roll having a roll shell (1), a stationary yoke (2), and an oblong hydrostatic pressure shoe (8) which can be tilted about a longitudinal axis and contains hydrostatic pressure pockets (11, 12). The pressure shoe is fitted to the inside diameter of the roll shell (1) and is attached to a radially movable oblong piston (4) which is sealed off from the yoke (2). The longitudinal ridges (9, 10) which define the individual hydrostatic pockets (11, 12) have a width (a, b) equal to at most 1/20 of the width (K) of the piston. The pressure shoe (8) is hydraulically supported over the main part of its width on its lower side, i.e. the side which faces the yoke (2).

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