| 摘要 |
PURPOSE:To simplify the structure and reduce the cost by housing the first and the second intake spool valves, driven by a piston, and the first and the second outlet spool valves in a cylinder main body. CONSTITUTION:The first and the second intake spool valves 9a, 9b, which are operated by a piston 3 and open or close the first and the second intake passages 5a, 5b, and the first and the second outlet spool valves 16a, 16b, which are operated by the piston 3 and open or close the first and the second outlet passages 15a, 15b, are housed in a cylinder main body 2. Since this eliminates requirement for an expensive control circuit for controlling changeover means which alternately change over and supply hydraulic fluid to each operation chamber 1a, 1b, the structure of a fluid pressure operation device is simplified and its cost can be reduced.
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