HYDRAULIC MACHINE WITH GEAR-MOUNTED SWASH-PLATE

摘要

A pair of nutating gears (10, 20) restrain the rotation of a wobbler portion (14) of a split swash-plate in variable and fixed displacement hydraulic machines. Each pair includes an internal gear (10) fixed to a housing (12) and an external gear (20) fixed to an outer circumferential surface of the wobbler. The tooth configuration of the gears can be any one of four different designs (Figure 7, 9A and 9B, 12B, 13A and 13B), which allow the gears to simultaneously share two centers of meshing engagement when nutating, while not interfering with the complex lemniscate motion of the wobbler.