| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably tilt-rotate and drive a swash plate without a special hydraulic source and miniaturize a hydraulic rotating machine, even when operation pressure of the hydraulic rotating machine is increased. SOLUTION: A spherical bodies 14, 14 rotatably supporting a swash plate 10 are arranged at right and left symmetrical positions in relation to Y-axis, and the swash plate 10 is tilt-rotated and driven by tilt-rotation control cylinders 17, 17 using X-axis orthogonal to Y-axis as a tilt-rotation central axis. The tilt-rotation control cylinders 17, 17 are arranged respectively at the opposite positions to spherical bodies 14, 14 on the both sides of an axis O of a rotary shaft, right and left symmetrically in relation to Y-axis, and common pressure oil from an oil passage is supplied as tilt-rotation control pressure to each tilt-rotation control cylinder 17. In addition, positional relation between each piston and the swash plate 10 is set so that application point of a resultant force F of hydraulic reaction acting from each piston to the swash plate 10 is within a region R surrounded by lines L, L which connect each supporting point C of the swash plate 10 with each spherical bodie 14 with a resultant force point D of each tilt-rotation control cylinder 17 and X-axis.</p> |
