| 摘要 |
PROBLEM TO BE SOLVED: To drive a high-pressure driving hydraulic apparatus with a low-pressure hydraulic unit.SOLUTION: A high-pressure hydraulic apparatus is operated with a low-pressure hydraulic unit 2. Respective driving shafts of an oil motor 7 for pressurization and a high-pressure oil motor 8 for boosting are interconnected through a coupler 14. Oil delivered from a hydraulic pump 4 in the low-pressure hydraulic unit 2 passes through a feed-side hydraulic hose 12, and is supplied to the oil motor 7 for pressurization and high-pressure oil motor 8 for boosting. The oil motor 7 for pressurization is driven with the supplied low-pressure oil, the driving shaft of the high-pressure oil motor 8 for boosting is rotated, the supplied low-pressure oil is boosted, and the boosted hydraulic fluid drives an oil motor 10 for driving to operate the high-pressure driving apparatus. The hydraulic fluid passes through a return passage 13, and returns to an oil tank 20 in the low-pressure hydraulic unit 2. |
