BEARING CONTROL SYSTEM FOR A ROLL WITH HYDROSTATIC BEARINGS

摘要

The invention concerns a bearing control system for a roll with hydrostatic bearings, which roll is mounted from its axle (3) on a bearing block or on an equivalent frame member by means of a number of hydraulically loaded hydrostatic bearing elements (10, 20, 30). At least one bearing element is a so-called principal bearing element (10), which acts in the principal loading direction, and one bearing element is a so-called backup bearing element (20), which acts in the direction opposite to the principal loading direction. The bearing elements are provided with bearing shoes positioned freely around the neck of the roll axle (3) in order to support said axle (3) and, thus, the roll revolvingly in relation to the frame member, such as a bearing block. The control system has been arranged preferably to feed the pressures of the hydraulic pressure medium passing to the hydrostatic bearing elements (10, 20, 30) so that the roll can be displaced in the principal loading direction (A-A), for example in the direction of the nip plane, by displacing the axle (3) by means of said bearing elements (10, 20, 30).