Patent ID: 7305822
Filing Date: 2007-12-11
Classification: F16H

Abstract:
1. Hydraulic equipment comprising: a first rotary shaft and a second rotary shaft; first and second plungers which are moved reciprocally axially; first and second spool valves which are also moved reciprocally axially; a cylinder block which houses the first and second plungers and the first and second spool valves and is rotated integrally with the first rotary shaft; a first swash plate which touches the first plungers; and a second swash plate which touches the second plungers and is rotated integrally with the second rotary shaft, wherein a hydraulic circuit is formed in the cylinder block so as to communicate holes in which the first plungers are housed with holes in which the second plungers are housed, and a passage of pressure oil flowing into or out from the plunger holes in which the first plungers are housed is switched by the first spool valves, and a passage of pressure oil flowing into or out from the plunger holes in which the second plungers are housed is switched by the second spool valves, characterized in that a spool valve guide on which a guide groove slanted against an axis of the rotary shaft is formed, and the first or second spool valve is engaged with a holding member attached to the guide groove.