公开(公告)号：US4997344A

公开(公告)日：1991-03-05

申请号：US394609

申请日：1989-08-14

申请人： Roger J. Nelson ,  Donald J. MacDonald ,  Arlen W. Koelling ,  William L. Snyder

发明人： Roger J. Nelson ,  Donald J. MacDonald ,  Arlen W. Koelling ,  William L. Snyder

IPC分类号： F04B1/04 ,  F04B1/053

CPC分类号： F04B1/0408 ,  F04B1/0426 ,  F04B1/053

摘要： A radial piston pump is provided with a plurality of valve/piston cartridges. Each cartridge includes the piston and at least one of the valves connecting the piston to the inlet and outlet passages of the pump. The bearings for the main rotor are pre-loaded using a threadedly adjustable end guill. Once adjusted, the end quill is held in location by a pin or the like. The rotor itself is provided with counterweights to balance the eccentric cam surface. These features allow construction of a pump housing which is substantially a single unit, rather than two pump halves. A significant reduction in the number of machined bores also is obtained.

摘要翻译： 径向柱塞泵设置有多个阀/活塞筒。 每个筒包括活塞和将活塞连接到泵的入口和出口通道的阀中的至少一个。 用于主转子的轴承使用螺纹可调端盖进行预加载。 一旦调整，终端套管通过销等保持在位置。 转子本身设有配重以平衡偏心凸轮表面。 这些特征允许构造基本上是单个单元的泵壳体，而不是两个泵半部。 也可获得加工孔数量的显着减少。

公开(公告)号：US4915595A

公开(公告)日：1990-04-10

申请号：US207347

申请日：1988-06-15

申请人： Roger J. Nelson ,  Donald J. Macdonald ,  Arlen W. Koelling ,  William L. Snyder

发明人： Roger J. Nelson ,  Donald J. Macdonald ,  Arlen W. Koelling ,  William L. Snyder

IPC分类号： F04B1/04 ,  F04B1/047 ,  F04B1/053 ,  F04B53/00 ,  F04B53/10 ,  F04B53/14

CPC分类号： F04B1/0426 ,  F04B1/0408 ,  F04B1/053

摘要： A radial piston pump is provided with a plurality of valve/piston cartridges. Each cartridge includes the piston and at least one of the valves connecting the piston to the inlet and outlet passages of the pump. The bearings for the main rotor are pre-loaded using a threadedly adjustable end quill. Once adjusted, the end guill is held in location by a pin or the like. The rotor itself is provided with counterweights to balance the eccentric cam surface. These features allow construction of a pump housing which is substantially a single unit, rather than two pump halves. A significant reduction in the number of machined bores also is obtained.

摘要翻译： 径向柱塞泵设置有多个阀/活塞筒。 每个筒包括活塞和将活塞连接到泵的入口和出口通道的阀中的至少一个。 用于主转子的轴承使用螺纹可调末端套筒进行预加载。 一旦调整，终端ill ill通过销等保持在位置。 转子本身设有配重以平衡偏心凸轮表面。 这些特征允许构造基本上是单个单元的泵壳体，而不是两个泵半部。 也可获得加工孔数量的显着减少。

公开(公告)号：US4141382A

公开(公告)日：1979-02-27

申请号：US848264

申请日：1977-11-03

申请人： James A. Miller ,  William L. Snyder

发明人： James A. Miller ,  William L. Snyder

IPC分类号： F15B13/04 ,  F15B13/043 ,  F15B13/08

CPC分类号： F15B13/04 ,  Y10T137/87201 ,  Y10T137/87209

摘要： A direction control valve for controlling a reversible hydraulic actuator includes a valve body in which a pair of valve stems and a pair of float control pistons, respectively axially aligned with the valve stems, are reciprocally mounted. To establish a float condition in the actuator, the pair of valve stems are simultaneously shifted to respective active positions by engagement of the pair of float-control pistons to which pressure fluid is routed upon selective energization of a solenoid-operated valve by manually closing a first normally open switch. A second normally open switch is connected in parallel with the first switch and is closed by a switch-control piston mounted in the valve body between and in fluid communication with the float-control pistons and shiftable concurrent therewith whereby the manually operable switch may be released without effecting de-energization of the solenoid-operated valve. A control rod is rockably mounted in the valve body for selective movement to opposite sides of a neutral position for respectively initiating independent shifting of the pair of valve stems to their active positions for respectively effecting extend and retract conditions in the actuator. A cam is fixed to the control rod and is operable, when the control valve is in its float-effecting condition and the control rod is moved from its neutral position, to move the switch-control piston to release the second switch and de-energize the solenoid-operated valve whereby the control valve is released from its float effecting condition.

摘要翻译： 用于控制可逆液压致动器的方向控制阀包括：阀体，其中一对阀杆和分别与阀杆轴向对准的一对浮子控制活塞相互安装。 为了在致动器中建立浮起状态，通过一对浮动控制活塞的接合，一对阀杆同时移动到相应的活动位置，该对浮动控制活塞通过手动关闭电磁阀的选择性通电而被施加压力流体 第一个常开开关。 第二常开开关与第一开关并联连接，并且由安装在阀体中的开关控制活塞封闭，该开关控制活塞与浮动控制活塞流体连通并与其同步地移动，由此手动操作的开关可以被释放 而不影响电磁阀的断电。 控制杆可旋转地安装在阀体中，用于选择性地运动到中立位置的相对侧，以分别启动一对阀杆的独立移位到其活动位置，以分别实现致动器中的延伸和缩回状态。 凸轮固定到控制杆上，并且当控制阀处于浮动效应状态并且控制杆从其中立位置移动时可操作，以移动开关控制活塞以释放第二开关并断开 电磁阀，由此控制阀从其浮动效应状态释放。