REAR TABLE OF HELICAL ROLLING MILL Russian patent published in 2002 - IPC

FIELD: rolled stock production, possibly rolling elongated thin-wall tubes in three-roll helical rolling mills with drive mechanism arranged at side of metal outlet from rolling stand. SUBSTANCE: rear table includes housing carrying rotary guide mounted in bearing assemblies; drive mechanism; shaft stationary mounted in housing; two pressure lids and shaped levers rigidly joined with said lids and mounted with possibility of rotation by means of drive mechanism. Housing is stationary one, it has inclined guiding members and stoppers arranged at side opposite relative to shaft. At changing guide, lids and levers simultaneously start to rotate around stationary shaft. After engaging of shaped levers with guide, the last begins to move on shaped levers; bearing assemblies at first move in turnings and then on inclined guiding members of housing until their arresting by means of stoppers. Stroke of drive mechanism is ended by such operation. In the result guide with bearing assemblies moves to zone completely open from upwards. EFFECT: improved design, easy maintenance of rear table in three-roll helical rolling mills with drive placed at side of metal outlet. 4 dwg