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AssigneeValmet Paper Machinery Inc.
InventorsJuhani Niskanen, Pekka Kivioja, Juha Lahtinen, Esa Lensu, Esa Salvamaki
Estimating the term…
A method for providing a tubular roll mantle of a roll for a paper machine or equivalent with glide bearings and a roll including glide-bearings. The roll mantle is supported on a stationary roll axle by hydraulic glide-bearing members acting upon the roll mantle or upon the roll ends. The bearing members are loaded hydraulically by a pressure medium. The roll mantle is supported on the roll axle by at least one pair of glide-bearing members which acting radially and/or axially in opposite directions. When an outside force that shifts or attempts to shift the roll mantle in the direction transverse to the main loading direction and/or in the axial direction is applied to the roll mantle, the pressure in the glide-bearing member placed at the side of the higher loading is adjusted to a level higher than the pressure in the glide-bearing member acting in the opposite direction so that the outside forces are neutralized. In another embodiment, the roll mantle is permitted to be shifted over a certain distance in the main loading direction. When the roll mantle approaches its preset extreme position in this direction, the movement of the roll mantle is braked down, and finally the movement is stopped in its extreme position by the glide-bearing members.
In a tubular roll for a paper machine or equivalent, comprising a stationary roll axle, a roll mantle, glide-bearing members for supporting said roll mantle on said roll axle, said glide-bearing members acting on an inner face of said roll mantle or roll ends of said roll under hydraulic pressure provided by a pressure medium, and loading means for supporting and loading said roll mantle in a main loading direction, the improvement comprising:
In a tubular roll for a paper machine or equivalent, comprising a stationary roll axle, a roll mantle, glide-bearing members for revolvingly supporting said roll mantle on said roll axle, said glide-bearing members acting on an inner face of said roll mantle under hydraulic pressure provided by a pressure medium, and said roll is loaded in a main loading plane, the improvement comprising:
In a tubular roll for a paper machine or equivalent, comprising a stationary roll axle, a roll mantle, glide-bearing members for supporting said roll mantle on said roll axle, said glide-bearing members acting on an inner face of said roll mantle or roll ends of said roll under hydraulic pressure provided by a pressure medium, the improvement comprising:
In a tubular roll for a paper machine or equivalent, comprising a stationary roll axle, a roll mantle, glide-bearing members for supporting said roll mantle on said roll axle, said glide-bearing members acting on an inner face of said roll mantle or roll ends of said roll under hydraulic pressure provided by a pressure medium, the improvement comprising:
In a tubular roll for a paper machine or equivalent, comprising a stationary roll axle, a roll mantle, glide-bearing members for supporting said roll mantle on said roll axle, said glide-bearing members acting on an inner face of said roll mantle or roll ends of said roll under hydraulic pressure provided by a pressure medium, the improvement comprising:
Dependencies are inferred from the claim text.