Dry quenching device

The invention discloses a dry quenching device which comprises a coke tank trolley and a coke tank body placed on the coke tank trolley, the coke tank trolley transports the coke tank body on a rail, an automatic centering device comprises two hydraulic cylinders, the end parts of the two hydraulic cylinders are respectively provided with an extrusion rod piece, and the extrusion rod pieces are arranged on the rail. The two hydraulic cylinders are symmetrically arranged on the two sides of the track, the center parts of the two extrusion rod pieces are connected to the corner position of a V-shaped rod in a rotating fit mode, the V-shaped rod and the extrusion rod pieces are perpendicular to each other, and the two ends of the V-shaped rod are each provided with an abutting roller in a rotating fit mode. The abutting roller is used for pushing the coke tank body to be accurately aligned with dry quenching coke, the two hydraulic cylinders simultaneously push the two extrusion rod pieces to move towards one en