DRIVE FOR GATES OR DOORS

摘要

It is described a drive operator (10) for gates (CG) or doors comprising a gear motor formed by an electric motor and a reduction unit with an output shaft; an articulated arm (30, 132) to be connected to the gate or door which is turnable and has at one end (34, 134) a crown gear (36, 136); a transmission member (70, 170) to transmit the rotary motion of said output shaft to the crown gear. To improve the stability and the arm centering, one or more satellite gears (60, 160) are placed between the transmission member and the crown gear, so that the transmission member, the satellite gears and the crown gear form a kinematical arrangement of the epicyclical type.