Novel duplex-gear slewing mechanism

TLDR: In this paper, a duplex-gear slewing mechanism was proposed, where the primary planetary gear adopts the duplex gears, so that reduction ratio is increased and output torque is improved within strength allowed by the mechanism.

Abstract: The utility model relates to a novel duplex-gear slewing mechanism. A motor provides input power; a shaft sleeve of the motor drives a primary sun gear by the aid of a transmission shaft; the primary sun gear is connected with a primary planetary gear; the primary planetary gear meshes with a primary inner gear ring; the primary planetary gear adopts duplex gears; a primary planet carrier is connected with a secondary sun gear; the secondary sun gear meshes with a secondary planetary gear; the secondary planetary gear meshes with a secondary inner gear ring; a secondary planet carrier is connected with a tail-end output shaft; and the tail-end output shaft is provided with a gear meshing with a slewing bearing. A plurality of parts of the novel duplex-gear slewing mechanism are integrated, so that the mechanism is more compact and reasonable and smaller in volume. The primary planetary gear adopts the duplex gears, so that reduction ratio is increased and output torque is improved within strength allowed by the mechanism. For some slewing mechanisms of specific types, three-stage transmission is even converted into two-stage transmission, and accordingly the volume and the weight of the mechanism is decreased more, so that the mechanism is more compact, and cost is reduced.