Fire extinguishing device

The invention relates to the field of fire extinguishing equipment, and discloses a fire extinguishing device which comprises a bridge seat and a bridge cover, the bridge seat is a trapezoidal block body, the middle of the bridge seat is provided with a front-back through protection groove with an opening in the upper end, and the middle of the bridge seat is further provided with a left-right through limiting groove with an opening in the upper end; the bridge cover is a cross-shaped plate body comprising a longitudinal plate and a transverse plate, the length of the transverse plate is larger than that of the longitudinal plate, and the length of the longitudinal plate is equal to the width of the bridge seat; rolling pieces are rotationally connected to the tops of the longitudinal plates and protrude out of the surfaces of the longitudinal plates. The protective bridge can serve as a protective bridge to protect the fire hose on a road and can also serve as a movable support of the fire hose, the moving c