公开(公告)号：US4343595A

公开(公告)日：1982-08-10

申请号：US100860

申请日：1979-12-06

申请人： David L. Wells ,  Allen M. Johnson

发明人： David L. Wells ,  Allen M. Johnson

IPC分类号： F04B9/103 ,  F04B17/00

CPC分类号： F04B9/103

摘要： A hydraulic actuated pressure booster unit includes a differential power piston and an integral control valve controlling the pumping direction and action. The control valve has a reciprocally mounted tubular spool member in a cylindrical valve body. The spool member has a control passageway and a plurality of spaced spools, one of which mates with the power piston passage to form a first valve for transfer of oil to the pumping chamber and from a transfer chamber to an exhaust passageway. A pair of spaced spools slide in stepped control chamber forming a control bore and exhaust bore connected by the spool passageway to the pumping chamber via the first valve. A sequence valve connects the exhaust bore to the exhaust through a directional control valve. The sequence valve is controlled by the output working pressure. A pilot valve controls the load connection to the one end of the cylinder and a high pressure relief valve limits the total pressure created within the working system. The valves and operating sections are axially mounted in longitudinal spacing within a tubular housing having fluid passages formed by recesses in the sidewalls and sealed by an outer shell.

摘要翻译： 液压致动升压单元包括差动动力活塞和控制泵送方向和作用的整体控制阀。 控制阀具有在圆柱形阀体中的往复安装的管状阀芯构件。 卷轴构件具有控制通道和多个间隔开的卷轴，其中一个与动力活塞通道配合，以形成用于将油传递到泵送室和从传送室传递到排气通道的第一阀。 一对隔开的卷轴在阶梯式控制室中滑动，形成控制孔和通过阀芯通道连接到排气室的排气孔，经由第一阀。 顺序阀通过方向控制阀将排气孔连接到排气口。 顺序阀由输出工作压力控制。 先导阀控制与气缸一端的负载连接，高压溢流阀限制工作系统内产生的总压力。 阀和操作部分以纵向间隔轴向安装在管状壳体内，其具有由侧壁中的凹部形成并由外壳密封的流体通道。

公开(公告)号：US4659292A

公开(公告)日：1987-04-21

申请号：US100859

申请日：1979-12-06

申请人： David L. Wells ,  Allen M. Johnson

发明人： David L. Wells ,  Allen M. Johnson

IPC分类号： F04B9/103 ,  F04B17/00

CPC分类号： F04B9/103

摘要： A hydraulic actuated pressure booster unit includes a differential power piston and an integral control valve controlling the pumping direction and action. The control valve has a reciprocally mounted tubular spool member in a cylinder valve body. The spool member has a control passageway and a plurality of spaced spools, one of which mates with the power piston passage to form a first valve for transfer of oil to the pumping chamber and from a transfer chamber to an exhaust passageway. A pair of spaced spools slide in stepped control chamber forming a control bore and exhaust bore connected by the spool passageway to the pumping chamber via the first valve. A sequence valve connects the exhaust bore to the exhaust through a directional control valve. The sequence valve is controlled by the output working pressure. A pilot valve controls the load connection to the one end of the cylinder and a high pressure relief valve limits the total pressure created within the working system. The valves and operating sections are axially mounted in longitudinal spacing within a tubular housing having fluid passages formed by recesses in the sidewalls and sealed by an outer shell.

摘要翻译： 液压致动升压单元包括差动动力活塞和控制泵送方向和作用的整体控制阀。 控制阀具有在气缸阀体中的往复安装的管状阀芯构件。 卷轴构件具有控制通道和多个间隔开的卷轴，其中一个与动力活塞通道配合，以形成用于将油传递到泵送室和从传送室传递到排气通道的第一阀。 一对隔开的卷轴在阶梯式控制室中滑动，形成控制孔和通过阀芯通道连接到排气室的排气孔，经由第一阀。 顺序阀通过方向控制阀将排气孔连接到排气口。 顺序阀由输出工作压力控制。 先导阀控制与气缸一端的负载连接，高压溢流阀限制工作系统内产生的总压力。 阀和操作部分以纵向间隔轴向安装在管状壳体内，其具有由侧壁中的凹部形成并由外壳密封的流体通道。