VARIABLE DISPLACEMENT SWASH PLATE-TYPE HYDRAULIC ROTATING MACHINE

摘要

A pair of leg sections (21A, 21B) is provided on a swash plate (21). A main static pressure bearing section (22A) communicating with one supply/discharge path (12A) through an oil guide path (24) is provided on one (21A) of the leg sections, and an auxiliary static pressure bearing section (22C) communicating with the oil guide path (24) is provided on the other leg section (21B). Further, on the other leg section (21B), there is provided the other main static pressure bearing section (22B) communicating with the other supply/discharge path (12B) through an oil guide path (25), and on the one leg section (21A), there is provided the other auxiliary static pressure bearing section (22D) communicating with the oil guide path (25). A separation force is produced between the leg sections (21A, 21B) of the swash plate (21) and a swash plate support body (20) by the main static pressure bearing sections (22A, 22B) and the auxiliary static pressure bearing sections (22C, 22D). The separation force balances with a pressing force of the swash plate (21).