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US 4,047,273 AGranted
Deflection compensating roll
AssigneeEscher Wyss Limited
InventorMario Biondetti
Life of this patent
Estimating the term…
Abstract
A deflection compensating press roll is disclosed in which a stationary beam has a barrel mounted for rotation thereabout and a plurality of hydrostatic elements provide selective hydrostatic support along the length of the roll. The support elements are arranged in a plurality of groups to which hydrostatic pressure fluid is directed at selected pressures through pressure fluid paths which are facilitated by separate hydrostatic fluid ducts.
Claims10
A deflection compensating press roll comprising:
- a. a stationary axial support beam having a central bore extending therethrough;
- b. a roll shell rotatably disposed about said support beam to rotate thereabout;
- c. a plurality of hydrostatic support elements positioned in engaged relation between said beam and said shell to exert forces therebetween;
- d. a plurality of coaxial ducts disposed in the central bore of said axial support beam, said ducts being capable of transmitting hydrostatic pressure fluid therethrough to feed said hydrostatic support elements, each of said ducts having apertures selectively positioned for entry and exit of hydrostatic pressure fluid;
- e. means to selectively direct hydrostatic pressure fluid to said ducts for feeding said hydrostatic support elements with said fluid;
- and
- f. sealing means selectively disposed in engaged relation with said coaxial ducts to define a plurality of separate of distinct sealed hydrostatic pressure fluid paths, each sealed hydrostatic pressure fluid path being associated in communicating relation with a group of at least on hydrostatic support element such that the hydrostatic pressure fluid directed to each group of said elements is independently selectable.
4 more elements
A deflection compensating press roll which comprises:
- a. a stationary axial beam having a central bore extending therethrough;
- b. a rotatable roll shell disposed about said beam to move in a free manner in a generally radial direction relative to said beam;
- c. at least three hydrostatic support elements guidably mounted in said beam in a predetermined support plane to rotatably support said shell on said beam and to follow movements of said shell, said supporting elements consituting the sole means to restrict motion of said shell with respect to said beam in said plane;
- d. at least three telescopic coaxial tubular members disposed within said central bore of said axial support beam, said tubular members being adapted to direct hydrostatic pressure fluid therethrough to feed said hydrostatic support elements, each of said tubular members having apertures positioned for entry and exit of hydrostatic pressure fluid;
- e. means to selectively direct hydrostatic pressure fluid to said ducts for feeding said hydrostatic support elements with said fluid;
- and
- f. resilient fluid sealing rings selectively disposed between pairs of adjacent tubular members to define a plurality of separate and distinct pressure fluid paths in a manner that each fluid path is being associated with a group of at least three hydorstatic support elements such that the hydrostatic pressure fluid directed to each group of said elements is independently selectable.
4 more elements
Dependencies are inferred from the claim text.