Tensioning and anti-shifting device for blast-furnace tuyere sleeve II

The utility model provides a tensioning and anti-shifting device for a blast-furnace tuyere sleeve II, which belongs to the technical field of blast-furnace smelting equipment and is used for preventing the tuyere sleeve II from being raised inwards and upwards to cause shifting deformation due to abnormal expansion of an inner lining of a blast-furnace cylinder. The tensioning and anti-shifting device adopts the following technical scheme: the tensioning and anti-shifting device is composed of a fixed ring, a tensioning rod and a transverse supporting rod, wherein the fixed ring is fixedly welded at the lower part of an inner ring of the tuyere sleeve II, the tensioning rod is particularly a round steel pull rod, a drag hook is arranged at the front end of the tensioning rod, a thread is arranged at the rear end of the tensioning rod, the transverse supporting rod is erected on an outer opening of a large tuyere sleeve, a tensioning hole is arranged on the transverse supporting rod, the drag hook at the fron