Tensioning protection device for coal conveying belt

The invention discloses a tensioning protection device for a coal conveying belt, and belongs to the technical field of coal conveying belt protection.The tensioning protection device is characterized in that a buffering bottom plate with a buffering function is additionally arranged below a traditional heavy hammer tensioning device, and guiding side plates used for vertically guiding a tensioning roller shaft are arranged on the two sides of the upper end of the buffering bottom plate; the tensioning roller shaft and the counter weight hammer assembly are matched to form a counter weight tensioning structure, when the belt is accidentally broken, the counter weight hammer assembly and the tensioning roller shaft fall, in the falling process, matched traction of the elastic piece and the bearing belt plays a primary buffering role in falling of the tensioning roller shaft, the falling speed of the counter weight hammer assembly can be reduced, and the safety of the belt is improved. And the buffering bottom