FLUID CIRCUIT |
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19840709 专利内容由知识产权出版社提供 摘要: PURPOSE:To raise the safety of the whole of a fluid circuit by a method in which a throttle mechanism is provided to the upstream side of a pilot relief valve to set up the pressure of the circuit, and the pressure difference before and behind of the throttle mechanism is compensated by a pressure compensating valve to make vent flow rate in the pilot relief valve constant. CONSTITUTION:A flow rate control circuit 33 is provided with variable capacity- type liquid pressure pumps 11 and 11', flow direction control valves 13-20, and load sensing valves 30 and 30'. A pilot relief valve 39 to set up the pressure of the circuit is provided and a throttle mechanism 40 is provided to the upstream side of the pilot relief valve 39. The pressure difference before and behind the throttle mechanism 40 is compensated by a pressure compensating valve 42 to keep vent flow rate in the pilot relief valve 39 constant. 申请人: DAIKIN KOGYO KK 更多信息请下载全文后查看 |
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