DEVICE FOR HYDRAULICALLY ADJUSTING THE ROLLERS OF STRAND GUIDING SEGMENTS OF A CONTINUOUS CASTING INSTALLATION

摘要

The invention relates to a device for hydraulically adjusting components, especially the rollers of strand guiding segments of a continuous casting installation with hydraulic cylinders (2) which are subdivided into a cylinder chamber (9) and an annular cylinder chamber (11) by each one piston (12) comprising a piston rod (13). The cylinder chambers (9, 11) can be alternatively, reciprocally and simultaneously connected to a pressure source (7) and to a pressure sink (5) by control elements. The disadvantages of prior art continuous valves used as control elements, primarily their high level of sensitivity with regard to cleanness and lubricity of the working fluid, are avoided in that control valves are provided as control elements. Said control valves are non-sensitive with regard to cleanness and to the use of an oil-in-water emulsion used as a working fluid.