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公开(公告)号：US20080295681A1
公开(公告)日：2008-12-04
申请号：US11806383
申请日：2007-05-31
IPC分类号： F15B13/04
CPC分类号： F15B11/05 , E02F3/7618 , E02F3/844 , F15B11/006 , F15B2211/20546 , F15B2211/30535 , F15B2211/30575 , F15B2211/3144 , F15B2211/40561 , F15B2211/50518 , F15B2211/6051 , F15B2211/6054 , F15B2211/65 , F15B2211/7053
摘要： A hydraulic system for a machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber. The first valve further includes a first element movable between a flow passing, at which fluid from the source flows to the first chamber, and a flow blocking position, at which fluid from the source is blocked from the first chamber and a second element configured to selectively drain a control passageway associated with the first element to cause the first element to move. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first valve dependent upon the pressure of the control passageway.
摘要翻译： 公开了一种用于机器的液压系统。 液压系统具有加压流体源和具有第一室的流体致动器。 液压系统还具有构造成选择性地将源与第一室流体连通的第一阀。 第一阀还包括第一元件，第一元件可以在通过流体之间移动，流体从源流出到第一室，流动阻挡位置在该流动阻挡位置处，来自源的流体被阻挡在第一室中，第二元件被配置为 选择性地排出与第一元件相关联的控制通道以使第一元件移动。 液压系统还具有比例压力补偿阀，该比例压力补偿阀被配置为根据控制通道的压力来控制引导在源和第一阀之间的流体的压力。
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公开(公告)号：US07735517B2
公开(公告)日：2010-06-15
申请号：US11643818
申请日：2006-12-22
IPC分类号： F15B13/043
CPC分类号： F15B13/0402 , F15B13/0435 , Y10T137/0352 , Y10T137/86019 , Y10T137/86582 , Y10T137/86606 , Y10T137/86614
摘要： A valve for controlling fluid flow in a fluid system is disclosed. The valve includes a housing, a servo spool, and a piston. The servo spool defines a spiral groove and a spiral land. The piston defines an orifice configured to provide flow communication to a supply of pressurized fluid and an orifice configured to provide flow communication to a portion of the fluid system exterior to the valve. The valve further includes a main spool operably coupled to the piston. The main spool is configured to control flow of fluid in the fluid system. The spiral groove and spiral land are configured such that angular displacement of the servo spool results in a force imbalance on the piston, thereby moving the piston and the main spool in one of a first direction and a second direction.
摘要翻译： 公开了一种用于控制流体系统中的流体流动的阀。 阀包括壳体，伺服卷轴和活塞。 伺服卷轴限定螺旋槽和螺旋槽。 活塞限定了一个孔口，其构造成提供与加压流体供应的流动连通，以及构造成提供与该阀外部流体系统的一部分的流动连通的孔口。 阀还包括可操作地联接到活塞的主阀芯。 主阀芯被配置为控制流体系统中的流体流动。 螺旋槽和螺旋槽脊构造成使得伺服阀芯的角位移导致活塞上的力不平衡，从而使活塞和主阀芯在第一方向和第二方向中的一个方向上移动。
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公开(公告)号：US20080295508A1
公开(公告)日：2008-12-04
申请号：US11806382
申请日：2007-05-31
IPC分类号： F16D31/02
CPC分类号： F16K31/406 , E02F9/2207 , E02F9/2267 , F15B11/006 , F15B11/05 , F15B13/0405 , F15B13/0417 , F15B13/0433 , F15B2211/20546 , F15B2211/30575 , F15B2211/3144 , F15B2211/327 , F15B2211/40553 , Y10T137/7788
摘要： The force feedback poppet valve includes a valve body having a main chamber, a first port, and a second port. The force feedback poppet valve further includes a main poppet disposed within the main chamber and movable between an open position and a closed position to control fluid flow between the first port and the second port. The main poppet forms a control chamber within the main chamber. The force feedback poppet valve further includes a first passage communicating the control chamber with the second port, a second passage communicating the control chamber with the first port, and a pilot valve having a pilot poppet for controlling fluid flow between the control chamber and the first port through the second passage. The force feedback poppet valve further includes a pressure compensator disposed within the main poppet, and fluidly connected to the second port via the first passage. The force feedback poppet valve further includes a first spring coupled between the main poppet and the pilot poppet to provide a force proportional to a distance between the main poppet and the pilot poppet, and a second spring coupled between the pressure compensator and the pilot poppet to provide a force proportional to a distance between the pressure compensator and the pilot poppet.
摘要翻译： 力反馈提升阀包括具有主室，第一端口和第二端口的阀体。 力反馈提升阀还包括设置在主室内的主提升阀，并且可在打开位置和关闭位置之间移动，以控制第一端口和第二端口之间的流体流动。 主提升阀在主室内形成一个控制室。 力反馈提升阀还包括将控制室与第二端口连通的第一通道，将控制室与第一端口连通的第二通道，以及具有用于控制控制室和第一阀门之间的流体流动的先导阀的先导阀 港口通过第二通道。 力反馈提升阀还包括设置在主提升阀内的压力补偿器，并且经由第一通道流体地连接到第二端口。 力反馈提升阀还包括联接在主提升阀和先导提升阀之间的第一弹簧以提供与主提升阀和先导提升阀之间的距离成比例的力，以及联接在压力补偿器和先导提升阀之间的第二弹簧， 提供与压力补偿器和驾驶员提升阀之间的距离成比例的力。
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公开(公告)号：US07621211B2
公开(公告)日：2009-11-24
申请号：US11806382
申请日：2007-05-31
CPC分类号： F16K31/406 , E02F9/2207 , E02F9/2267 , F15B11/006 , F15B11/05 , F15B13/0405 , F15B13/0417 , F15B13/0433 , F15B2211/20546 , F15B2211/30575 , F15B2211/3144 , F15B2211/327 , F15B2211/40553 , Y10T137/7788
摘要： The force feedback poppet valve includes a valve body having a main chamber, a first port, and a second port. The force feedback poppet valve further includes a main poppet disposed within the main chamber and movable between an open position and a closed position to control fluid flow between the first port and the second port. The main poppet forms a control chamber within the main chamber. The force feedback poppet valve further includes a first passage communicating the control chamber with the second port, a second passage communicating the control chamber with the first port, and a pilot valve having a pilot poppet for controlling fluid flow between the control chamber and the first port through the second passage. The force feedback poppet valve further includes a pressure compensator disposed within the main poppet, and fluidly connected to the second port via the first passage. The force feedback poppet valve further includes a first spring coupled between the main poppet and the pilot poppet to provide a force proportional to a distance between the main poppet and the pilot poppet, and a second spring coupled between the pressure compensator and the pilot poppet to provide a force proportional to a distance between the pressure compensator and the pilot poppet.
摘要翻译： 力反馈提升阀包括具有主室，第一端口和第二端口的阀体。 力反馈提升阀还包括设置在主室内的主提升阀，并且可在打开位置和关闭位置之间移动，以控制第一端口和第二端口之间的流体流动。 主提升阀在主室内形成一个控制室。 力反馈提升阀还包括将控制室与第二端口连通的第一通道，将控制室与第一端口连通的第二通道，以及具有用于控制控制室和第一阀门之间的流体流动的先导阀的先导阀 港口通过第二通道。 力反馈提升阀还包括设置在主提升阀内的压力补偿器，并且经由第一通道流体地连接到第二端口。 力反馈提升阀还包括联接在主提升阀和先导提升阀之间的第一弹簧以提供与主提升阀和先导提升阀之间的距离成比例的力，以及联接在压力补偿器和先导提升阀之间的第二弹簧， 提供与压力补偿器和驾驶员提升阀之间的距离成比例的力。
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公开(公告)号：US20080149181A1
公开(公告)日：2008-06-26
申请号：US11643818
申请日：2006-12-22
IPC分类号： F16K31/124 , F16K31/12 , F16K31/04
CPC分类号： F15B13/0402 , F15B13/0435 , Y10T137/0352 , Y10T137/86019 , Y10T137/86582 , Y10T137/86606 , Y10T137/86614
摘要： A valve for controlling fluid flow in a fluid system is disclosed. The valve includes a housing, a servo spool, and a piston. The servo spool defines a spiral groove and a spiral land. The piston defines an orifice configured to provide flow communication to a supply of pressurized fluid and an orifice configured to provide flow communication to a portion of the fluid system exterior to the valve. The valve further includes a main spool operably coupled to the piston. The main spool is configured to control flow of fluid in the fluid system. The spiral groove and spiral land are configured such that angular displacement of the servo spool results in a force imbalance on the piston, thereby moving the piston and the main spool in one of a first direction and a second direction.
摘要翻译： 公开了一种用于控制流体系统中的流体流动的阀。 阀包括壳体，伺服卷轴和活塞。 伺服卷轴限定螺旋槽和螺旋槽。 活塞限定了一个孔口，其构造成提供与加压流体供应的流动连通，以及构造成提供与该阀外部流体系统的一部分的流动连通的孔口。 阀还包括可操作地联接到活塞的主阀芯。 主阀芯被配置为控制流体系统中的流体流动。 螺旋槽和螺旋槽脊构造成使得伺服阀芯的角位移导致活塞上的力不平衡，从而使活塞和主阀芯在第一方向和第二方向中的一个方向上移动。
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