The utility model discloses a safety connecting device of a
sizing mill, which relates to the technical field of
sizing mills, and comprises a
shear pin coupling, the
shear pin coupling is fixedly connected with a rotating roller and an output shaft of a speed
reducer motor, a driving component is mounted on the
shear pin coupling, and the driving component consists of a driving motor and a screw rod; the lead screw is fixedly installed on an output shaft of the driving motor, a broken pin push-out
assembly is installed on the shear pin coupling in a sliding mode, the broken pin push-out
assembly is installed on the lead screw at the same time, and the driving
assembly and the broken pin push-out assembly are arranged on the shear pin coupling and matched with each other; a plurality of broken
cut-off pin bodies can be quickly and automatically pushed out of a plurality of first pin holes and a plurality of second pin holes at a time, the cleaning efficiency is remarkably improved, the
downtime of equipment is shortened, meanwhile, due to the existence of the driving assembly and the broken pin pushing-out assembly, secondary damage possibly caused by manual operation is avoided, the reliability and safety of the equipment are ensured, and the service life of the equipment is prolonged. And the service life of the equipment is further prolonged.