| 摘要 |
PURPOSE:To quickly contract a selected hydraulic cylinder by connecting a shuttle valve between pipelines connecting control valves and flow dividers, and connecting the outlet of the shuttle valve to a tank through the main shuttle valve and switch valve. CONSTITUTION:The second and third shuttle valves 22, 23 are connected between pipelines 14a, 14b, 14c, 14d connecting the first and second control valves 15a, 15b and the second flow dividers 12, and the third and fourth control valves 15c, 15d and the third flow divider 13. Outlet of the second and third shuttle valves 22, 23 are connected to a tank 19 through the first shuttle valve 21 and a switch valve 27. In this arrangement, hydraulic cylinders can be individually or a selected pair of cylinders can be simultaneously contracted quickly. |
