公开(公告)号：US07677871B2

公开(公告)日：2010-03-16

申请号：US11266179

申请日：2005-11-04

申请人： Charles L. Gray ,  Andrew J. Moskalik ,  Matthew J. Brusstar ,  David K. Gill ,  Kevin Berent Fuqua ,  Craig Douglas Moffat

发明人： Charles L. Gray ,  Andrew J. Moskalik ,  Matthew J. Brusstar ,  David K. Gill ,  Kevin Berent Fuqua ,  Craig Douglas Moffat

IPC分类号： F04B1/12 ,  F01B3/02 ,  F01B13/04

CPC分类号： F04B1/2092 ,  F04B1/124 ,  F04B1/128 ,  F04B1/328 ,  F16H2039/005

摘要： A variable displacement hydraulic/pump motor has a yoke with a pair of shafts aligned to define a yoke pivot axis and connected to a valve plate therebetween having intake and discharge apertures. A rotatable cylinder barrel has piston cylinders open at one end to receive a piston head and opening through fluid ports at another end, flush against the valve plate surface. A drive block is mounted on an input/output shaft for rotation about a central axis of rotation inclined at an angle relative to the longitudinal axis of the cylinder barrel which may be changed by a drive engaging the yoke at a point near its pivot axis. Loads on bushings supporting the yoke shafts are reduced by providing radially extending fluid ports in the shafts and in communication with the intake and discharge apertures of the valve plate.

摘要翻译： 可变排量液压/泵马达具有轭，其一对轴对准以限定轭枢转轴线并且连接到其间具有进气和排出孔的阀板。 可旋转的缸筒具有在一端敞开的活塞气缸，以接收活塞头并通过另一端的流体端口开口，与阀板表面齐平。 驱动块安装在输入/输出轴上，用于围绕相对于气缸筒的纵向轴线成一定角度倾斜的中心旋转轴线旋转，该中心轴线可以通过在靠近其枢转轴线的点处接合轭架的驱动器来改变。 通过在轴中提供径向延伸的流体端口并与阀板的进入和排出孔连通来减少支撑轭轴的衬套上的负载。