HIGH TORQUE DRIVE MEANS FOR TWO VERY CLOSES SHAFTS WHICH ARE ALSO SUBJECTED TO STRONG AXIAL THRUSTS AND APPLICATION THEREOF TO A DOUBLE SCREW EXTRUDER

摘要

It is provided, according to the present invention, that two very close parallel shafts (2) rotating in the same or opposite direction, each fitted with a gear (4), are rotated each of them by means of at least one or more drive members (8, 12, 23, 25, 29, 13, 24, 26) which act on the periphery zone of each of said gears. In an application to a double screw extruder, the housing (18) containing the extruding screws (15) is directly connected with the support (17) of the thrust bearings (16), without urging the drive box (22). Said connection is obtained by means of tie rods (19, 20) passing through said drive box and preferably within the shafts (21) on which the final gears of the drive element are mounted.