| 摘要 |
PURPOSE:To improve output control accuracy and energy utilizing efficiency of a two-throw variable pump. CONSTITUTION:This control mechanism is provided with levers 3A, 3B which are formed integratedly with swash plates 32A, 32B for changing a slant rotating angle, and regulator pistons 4A, 4B for driving the levers 3A, 3B according to pressure supplied to oil chambers 6A, 6B. First control valves 11A, 11B are provided to control pressure in the oil chambers 6A, 6B according to rocking of common rocker arm 7. Piston 9A, 9B are provided to have moment responding to positions of the levers 3A, 3B and discharging pressure of pump units 1A, 1B applied to the rocker arm 7. A second control valve 12A or 12B for forcibly supplying high pressure to the oil chamber 6A or 6B according to operation is provided on at least one of pump unit 1A or 1B. |
