| 摘要 |
PURPOSE:To reduce a brake valve to compact size and light weight by mounting a pair of relief valves in a spool to be united in a body. CONSTITUTION:When pressure oil comes to a chamber 20, the pressure oil in the chamber 20 pushes a poppet valve 17 to be opened against a spring 18, and flows in a motor 5 through a chamber 29, a passage 30 and a port 6, to prevent cavitation of the motor 5. Thus, brake pressure is produced on the outlet side of the motor 5, and oil passing through a relief valve built-in a spool 9 is supplied to the inlet of the motor 5 so as to stop the motor 5 smoothly. The thus constructed brake valve is reduced in size and weight. |
