Steel rail welding seam overflow flash full-section grinding machine

The utility model relates to a steel rail welding seam overflow flash polishing treatment device. A steel rail welding seam overflow flash full-section grinding machine comprises a clamping rail positioning mechanism, a supporting mechanism and a grinding mechanism, a first supporting arm of the supporting mechanism is hinged to the clamping rail positioning mechanism, and the grinding mechanism is fixed to an operation arm of the supporting mechanism; the rail clamping positioning mechanism comprises a rail clamping device and a sliding mechanism; the sliding mechanism comprises a sliding seat, a sliding guide rail and a lead screw which is matched with the sliding seat to achieve relative sliding of the sliding seat in the steel rail direction, and the sliding seat is connected to the rail clamping device through the sliding guide rail and the lead screw. The first supporting arm of the supporting mechanism is hinged to the sliding seat of the sliding mechanism. The steel rail welding seam overflow flash gr