Power plants – Pressure fluid source and motor – Input pump and rotary output motor system having...
Patent
1996-12-10
1998-11-17
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Input pump and rotary output motor system having...
60493, 60494, F16D 3900
Patent
active
058361600
ABSTRACT:
A hydraulic system for driving an axial piston type hydraulic motor wherein a swash plate can tilt at a right angle relative to a shaft. The hydraulic system comprises a swash plate cylinder; a double-acting swash plate piston disposed in the swash plate cylinder; one rod end of which is connected to the swash plate; a pair of springs disposed in the swash plate cylinder for biasing the swash plate piston; a swash plate piston control valve for selectively connecting one of the swash plate piston chambers to a hydraulic pump or, alternatively, for interconnecting the chambers of the swash plate piston; an inlet passage installed between an inlet port of the hydraulic motor and a hydraulic pump; an outlet passage installed between an outlet port of the hydraulic motor and a tank; a main control valve installed in the inlet passage for opening or closing the inlet passage in response to a predetermined signal; a passage switching valve installed in the outlet passage for opening or closing the outlet passage in response to a predetermined signal; a bypass passage installed in the outlet passage wherein each end of the bypass passage is connected to a predetermined position before and after the passage switching valve; and a relief valve installed in the bypass passage.
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Nguyen Hoang
Samsung Heavy Industries Co. Ltd.
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