发明名称 |
ANTI-KAVIATIONS- OCH AVLASTNINGSVENTIL FOR HYDRAULSYSTEM |
摘要 |
<p>A hydraulic system including at least one hydraulic cylinder is provided with an anti-cavitation and overload relief valve having a housing, a first chamber within the housing in fluid communication with one end of the cylinder, and a second chamber within the housing in fluid communication with a fluid reservoir. A fluid passageway within the valve housing connects the first and second chambers. A movable valve assembly is positioned within the fluid passageway for operating in a plurality of modes for providing anti-cavitation and overload relief. The valve includes a stationary portion positioned within the fluid passageway between the first and second chambers having a valve seat. The movable valve assembly includes a poppet mechanism for sealingly engaging a valve seat of the movable valve element when the movable valve assembly is operating in first and third modes. A tang on the head of the poppet engages a reduced diameter portion of the stationary valve element in order to maintain fluid communication between the first and second chambers during the second mode of operation. An axial extension of a poppet spring seat limits the travel of the movable valve during the third mode of operation and limits the stress on a poppet spring.</p> |
申请公布号 |
SE7901345(A) |
申请公布日期 |
1979.08.18 |
申请号 |
SE19790001345 |
申请日期 |
1979.02.15 |
申请人 |
* GENERAL SIGNAL CORPORATION |
发明人 |
G W * SUTTON |
分类号 |
E02F9/22;F15B13/02;F16K17/02;F16K17/18;F16K17/196;(IPC1-7):15B11/02 |
主分类号 |
E02F9/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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