| 摘要 |
The invention relates to a device for replacing the rollers in a tube-rolling mill on a tube-production line, more particularly in a rolling mill with mandrel or a calibration (sizing) rolling mill for the manufacture of defect-free tubes. The device comprises a displacement carriage 23 located on each of the passage sides of the tubes to be rolled, in order to be displaced longitudinally in the direction of the tube-rolling mill, and comprises a plurality of carriages for replacement of rollers 4, each of them being designed for rearward and forward displacement, by means of withdrawal carriages 26 which are associated therewith, between the positions of working and of placing in reserve. Replacement of the rolling rollers 21 takes place rapidly and safely, while reducing the work and ensuring high productivity. <IMAGE>
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