| 摘要 |
PURPOSE:To drive a selected hydraulic cylinder promptly by connecting the first flow divider to the discharge side of a hydraulic pump, and connecting the second, third flow dividers and a control valve to the discharge side of the first flow divider. CONSTITUTION:The first flow divider 30 is connected to a hydraulic pump 5, and the second and third flow dividers 33, 34 are connected to the first flow divider 30. Jack cylinders 4a, 4b, 4c, 4d are connected to the second and third flow dividers 33, 34 through the first, second, third and fourth flow control valves 36a, 36b, 36c, 36d. In this arrangement, the jack cylinders are individually, or plural selected cylinders are simultaneously, or all the cylinders are simultaneously contracted, and the prompt operation speed can be attained. |
