公开(公告)号：US5928041A

公开(公告)日：1999-07-27

申请号：US20560

申请日：1998-02-09

申请人： David J. Anderson ,  Jason Danner

发明人： David J. Anderson ,  Jason Danner

IPC分类号： B63H20/12 ,  B63H25/30 ,  F15B9/12 ,  B63H5/125

CPC分类号： B63H25/30 ,  B63H21/265 ,  F15B9/12

摘要： A power-assist hydraulic system for use in connection with a linkage extending through a housing and mechanically coupled to an actuated member. The power-assisted hydraulic system includes a double-acting hydraulic cylinder having a rod configured for interconnection to the actuated member, an accumulator for storing pressurized hydraulic fluid and a rotary valve. The rotary valve has a valve interface for selectively connecting the hydraulic cylinder to the accumulator. The rotary valve has at least one valve piston for receiving pressurized hydraulic fluid to maintain a hydraulic balance at the valve interface. A sleeve having a bore through which the linkage can extend is mechanically coupled and movably mounted with respect to the rotary valve for moving the rotary valve between a neutral position and first and second rotated positions in response to forces between the linkage and housing. The sleeve and rotary valve cooperate to drive the hydraulic cylinder in a first or a second direction in response to the rotary valve being in the first or the second rotated position, respectively.

摘要翻译： 一种动力辅助液压系统，用于与延伸穿过壳体并机械联接到致动构件的联动件相结合。 动力辅助液压系统包括双作用液压缸，其具有构造成与致动构件相互连接的杆，用于存储加压液压流体的储液器和旋转阀。 旋转阀具有用于选择性地将液压缸连接到蓄能器的阀接口。 旋转阀具有至少一个用于接收加压液压流体的阀活塞，以在阀接口处保持液压平衡。 具有孔的套筒具有连接件能够延伸穿过的孔，其相对于旋转阀机械联接和可移动地安装，用于响应于连杆机构和壳体之间的力而在中立位置和第一和第二旋转位置之间移动旋转阀。 套筒和旋转阀配合以响应于旋转阀分别处于第一或第二旋转位置而在第一或第二方向上驱动液压缸。