发明名称 Method of controlling a swinging boom and apparatus for controlling the same
摘要 A swing speed compensation device is provided for use with a flow sharing hydraulic system. The present invention is mounted within the metering spool of a flow sharing valve and includes a poppet that is attached to a spring retainer. The spring retainer encases a compression spring which pushes against a plug and has a drain hole that, depending upon the position of the spring retainer and poppet combination, can vent excess pressure within the present invention to a hydraulic pump tank. When a flow sharing hydraulic system starts or stops, there is a rush in the fluid flow that can cause a spike in the system pressure. The present invention absorbs this pressure spike, allowing for the fluid flow to gradually increase or decrease as the system starts or stops.
申请公布号 US6868672(B2) 申请公布日期 2005.03.22
申请号 US20030437323 申请日期 2003.05.13
申请人 SAUER-DANFOSS, INC. 发明人 LUO NIANZHU
分类号 E02F9/22;F15B11/00;F15B13/04;(IPC1-7):F16D31/02 主分类号 E02F9/22
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