Screw connection mechanism of wall plate extruder

The utility model relates to a screw connection mechanism of a wall plate extruder in construction machinery. The utility model is characterized in that an output shaft 1 is connected with one end of a universal joint 3 the other end 4 of which is connected with a spline sleeve 4A; one end of a screw rod is connected with one end 6 of a universal joint the other end 5 of which is connected with a spline shaft 5A; the spline shaft and the spline sleeve are cooperated to realize axial movement and torque transference; a gear 9 is arranged on the screw rod 8; a gear 10 is arranged on a screw rod 11 which is not connected with the universal joint; two gears are mutually engaged to transfer the torque. The wall plate extruder manufactured by the utility model can produce wall plates with different models by changing different numbers of the screw rods connected with the output shaft; simultaneously the thickness of the wall plates is uniform, and evacuation rate is high.