Controlled deflection roll

摘要

A controlled deflection roll comprising a fixed support and a hollow shell rotatable about the support and displaceable relative to the support in the direction of a pressure plane. Between the support and the shell there is located at least one hydrostatic pressure or contact element which is effective in the pressure plane and serves for oppressing the roll shell against a counter roll and thus for forming the pressure force of the roll. Additionally, there is provided at least one hydrostatic lift-off element which is effective in the opposite direction with respect to the contact or pressure element and serves for lifting-off the roll shell from the counter roll. The contact element and the lift-off element can be connected by hydraulic lines or conduits to a source of hydraulic pressurized fluid medium. A control device or means serves for the selective connection of a conduit of the contact element or the lift-off element with the source of hydraulic pressurized fluid medium and for simultaneously connecting the conduit of the element disconnected from the source with a drainage or outflow line or conduit.