| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost and safe hydraulic motor device attaining speedy and efficient mooring and cargo handling in a ship, minimizing power to a load, and reducing CO2 by energy saving without depending on a high-cost VVVF system.SOLUTION: A hydraulic motor device 10 includes: a first chamber 5d, a second chamber 5e and a third chamber 5f formed in a hydraulic motor part 5; a first main oil passage (a) for transmitting oil pressure to the first chamber 5d; a second main oil passage (b) having a first distribution valve 4 which is switched when oil pressure exceeds a first pressure as the oil pressure in the first main oil passage (a) increases, and further increasing the oil pressure in the first main oil passage (a) to be transmitted to the second chamber 5e; a third main oil passage (c) having a second distribution valve 6 which is switched when oil pressure exceeds a second pressure higher than the first pressure as the oil pressure in the first main oil passage (a) increases, and further increasing the oil pressure in the first main oil passage (a) to be transmitted to a third chamber 5f; a fourth main oil passage (d); and a fifth main oil passage (e) for recovering drain. |
