Description

All transmission device of epicyclic cycloidal pinwheel speed reducer can be divided intothree parts: input part, slowing down part and output part. The input shaft is installed a dislocation **0° double eccentric locking collar that is installed two roller bearings. It forms H mechanism. The central hole of two cycloidal wheels is just the roller table of tumbler bearing at eccentric locking collar. Meanwhile it is meshed with one group of pin wheel arranged in ring shape at cycloidal wheel and pin wheel in order to consist of less differential gear inner meshing speed-down mechanism (in order to reduce friction, the pin tooth has sleeve of pin tooth at speed reducer with small speed ratio). 。　　　 When input shaft brings eccentric locking collar to rotate one cycle, because of the characteristic of tooth profile curve at cycloidal wheel as well as it is limited by up pin tooth of pin wheel, the motion of cycloidal wheel becomes a plane motion with revolution and rotation. When the input shaft rotates clockwise one cycle, the eccentric locking collar rotates one cycle too. The cycloidal wheel will rotates one differential gear at opposite direction and the speed-down can be got. By means of W output mechanism, the low velocity rotation motion of cycloidal wheel will transmit to output shaft through axis pin and lower output velocity can be got