Steel support moving head device easy to disassemble and assemble and having function of safe locking

The invention discloses a steel support moving head device easy to disassemble and assemble and having a function of safe locking. The steel support moving head device comprises an inserting and hanging buckling plate, wherein a jack and a jacking cylinder are sequentially fixed to the center of the top surface of the inserting and handing buckling plate from inner part to the outer part, the topof the jacking cylinder is fixedly connected with the bottom surface of an end seat of the jacking cylinder, a jacking segment of the jack penetrates through the end seat of the jacking cylinder, andis fixedly connected with the bottom of a movable plate above the jack, a support plate is fixedly connected to the top surface of the movable plate, and the steel support moving head device also comprises a fixing backing plate which is in clamping connection to the inserting and hanging buckling plate; a plurality of inserting tenons in mutually parallel are arranged on the surface of the fixingbacking plate, and head en