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公开(公告)号：US20100043418A1
公开(公告)日：2010-02-25
申请号：US12575716
申请日：2009-10-08
IPC分类号： F15B13/00
CPC分类号： F15B11/163 , F15B11/006 , F15B21/08 , F15B2211/253 , F15B2211/30535 , F15B2211/30575 , F15B2211/3144 , F15B2211/327 , F15B2211/6313 , F15B2211/7053
摘要： A hydraulic system is disclosed having at least two hydraulic circuits. The disclosed system compares pressures between the hydraulic circuits and alters valve commands of the circuit associated with higher pressures in order to reduce overall system pressure.
摘要翻译： 公开了具有至少两个液压回路的液压系统。 所公开的系统比较了液压回路之间的压力并改变了与较高压力相关联的回路的阀门命令，以便降低总体系统压力。
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公开(公告)号：US07146808B2
公开(公告)日：2006-12-12
申请号：US10975418
申请日：2004-10-29
IPC分类号： F16D31/02
CPC分类号： E02F9/2246 , F15B11/162 , F15B11/163 , F15B2211/255 , F15B2211/40515 , F15B2211/41527 , F15B2211/455 , F15B2211/6323 , F15B2211/6326 , F15B2211/6346 , F15B2211/6654 , F15B2211/71 , F15B2211/75
摘要： A hydraulic system has a source, a plurality of fluid actuators, and a controller. The controller is configured to receive an input indicative of which of the plurality of fluid actuators are a first and a second type of fluid actuator, to receive an input indicative of a desired flow rate for the plurality of fluid actuators, and to determine a current flow rate of the source. The controller is further configured to demand the desired flow rate for the first type of fluid actuator and to demand a scaled down desired flow rate for the second type of fluid actuator when a total desired flow rate exceeds the current flow rate of the source, and to demand a scaled down desired flow rate for all of the plurality of fluid actuators when the desired flow rate for the first type of fluid actuator exceeds the current flow rate of the source.
摘要翻译： 液压系统具有源，多个流体致动器和控制器。 控制器被配置为接收指示多个流体致动器中的哪一个是第一和第二类型的流体致动器的输入，以接收指示多个流体致动器的期望流量的输入，并且确定电流 来源流量。 所述控制器还被配置成当所述总期望流量超过所述源的当前流速时，要求所述第一类型的流体致动器的期望流量，并且要求所述第二类型的流体致动器的按比例缩小的期望流量;以及 当第一类型的流体致动器的期望流量超过源的当前流速时，要求所有多个流体致动器的所需流量按比例缩小。
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公开(公告)号：US08973358B2
公开(公告)日：2015-03-10
申请号：US13278788
申请日：2011-10-21
CPC分类号： E02F9/2285 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20546 , F15B2211/20561 , F15B2211/265 , F15B2211/3111 , F15B2211/3116 , F15B2211/3144 , F15B2211/329 , F15B2211/7053 , F15B2211/7058 , Y02P80/13
摘要： A hydraulic system is disclosed. The hydraulic system may have a unidirectional variable displacement first pump, a first actuator connected to the first pump via a closed-loop first circuit, and a first switching valve disposed between the first actuator and the first pump. The first switching valve may be configured to control a fluid flow direction through the first actuator. The hydraulic system may also have a second actuator connected to the first pump in parallel with the first actuator via the first circuit, and a second switching valve disposed between the second actuator and the first pump. The second switching valve may be configured to control a fluid flow direction through the second actuator. The hydraulic system may further have a modulation valve associated with the first circuit and configured to selectively modulate a pressure of the first circuit during actuation of the first or second switching valves.
摘要翻译： 公开了一种液压系统。 液压系统可以具有单向可变排量的第一泵，通过闭环第一回路连接到第一泵的第一致动器和设置在第一致动器和第一泵之间的第一切换阀。 第一切换阀可被配置成控制通过第一致动器的流体流动方向。 液压系统还可以具有经由第一回路与第一致动器并联的第一泵连接的第二致动器，以及设置在第二致动器和第一泵之间的第二切换阀。 第二切换阀可以被配置为控制通过第二致动器的流体流动方向。 液压系统还可以具有与第一回路相关联的调节阀，并配置成在第一或第二切换阀的致动期间选择性地调制第一回路的压力。
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公开(公告)号：US20130098014A1
公开(公告)日：2013-04-25
申请号：US13278788
申请日：2011-10-21
IPC分类号： F15B13/02
CPC分类号： E02F9/2285 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B11/17 , F15B2211/20546 , F15B2211/20561 , F15B2211/265 , F15B2211/3111 , F15B2211/3116 , F15B2211/3144 , F15B2211/329 , F15B2211/7053 , F15B2211/7058 , Y02P80/13
摘要： A hydraulic system is disclosed. The hydraulic system may have a unidirectional variable displacement first pump, a first actuator connected to the first pump via a closed-loop first circuit, and a first switching valve disposed between the first actuator and the first pump. The first switching valve may be configured to control a fluid flow direction through the first actuator. The hydraulic system may also have a second actuator connected to the first pump in parallel with the first actuator via the first circuit, and a second switching valve disposed between the second actuator and the first pump. The second switching valve may be configured to control a fluid flow direction through the second actuator. The hydraulic system may further have a modulation valve associated with the first circuit and configured to selectively modulate a pressure of the first circuit during actuation of the first or second switching valves.
摘要翻译： 公开了一种液压系统。 液压系统可以具有单向可变排量的第一泵，通过闭环第一回路连接到第一泵的第一致动器和设置在第一致动器和第一泵之间的第一切换阀。 第一切换阀可被配置成控制通过第一致动器的流体流动方向。 液压系统还可以具有经由第一回路与第一致动器并联的第一泵连接的第二致动器，以及设置在第二致动器和第一泵之间的第二切换阀。 第二切换阀可以被配置为控制通过第二致动器的流体流动方向。 液压系统还可以具有与第一回路相关联的调节阀，并配置成在第一或第二切换阀的致动期间选择性地调制第一回路的压力。
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公开(公告)号：US20130098013A1
公开(公告)日：2013-04-25
申请号：US13278745
申请日：2011-10-21
IPC分类号： F15B11/17
CPC分类号： F15B11/17 , E02F9/2242 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B2211/20523 , F15B2211/20546 , F15B2211/20561 , F15B2211/20576 , F15B2211/265 , F15B2211/3144 , F15B2211/329 , F15B2211/7053 , F15B2211/7058 , Y02P80/13
摘要： A hydraulic system is disclosed. The hydraulic system may have a plurality of pumps with unidirectional functionality and being variable displacement, a common discharge passage connected to the plurality of pumps, and a common intake passage connected to the plurality of pumps. The hydraulic system may also have at least one actuator connected in closed-loop manner to the common discharge and common intake passages, and a switching valve associated with the at least one actuator and disposed between the at least one actuator and the common discharge and intake passages. The hydraulic system may additionally have at least one isolation valve configured to selectively isolate a portion of the common discharge passage and a portion of the common intake passage associated with one pump of the plurality of pumps from another pump of the plurality of pumps.
摘要翻译： 公开了一种液压系统。 液压系统可以具有多个具有单向功能并具有可变排量的泵，连接到多个泵的公共排放通道以及连接到多个泵的公共进气通道。 液压系统还可以具有至少一个致动器，其以闭环方式连接到公共排放和公共进气通道，以及与至少一个致动器相关联并设置在至少一个致动器和公共排放和进气口之间的切换阀 段落。 液压系统可以另外具有至少一个隔离阀，该隔离阀构造成选择性地将公共排放通道的一部分和与多个泵中的一个泵相关联的公共进气通道的一部分与多个泵中的另一个泵隔离。
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公开(公告)号：US08919114B2
公开(公告)日：2014-12-30
申请号：US13278479
申请日：2011-10-21
CPC分类号： F15B7/003 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30595 , F15B2211/3144 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/781 , F15B2211/785 , Y02P80/13
摘要： A hydraulic system is disclosed having first, second, and third pumps. The hydraulic system may also have a first actuator connected to the first pump in closed-loop manner, a second actuator connected to the second pump in closed-loop manner, and a third actuator. The hydraulic system may further have a selector valve associated with the third pump, and a first switching valve associated with the third pump and the third actuator. The first switching valve may be movable between a first position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a first direction, a second position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a second direction, and a third position at which the third pump is connected to the selector valve.
摘要翻译： 公开了一种具有第一，第二和第三泵的液压系统。 液压系统还可以具有以闭环方式连接到第一泵的第一致动器，以闭环方式连接到第二泵的第二致动器和第三致动器。 液压系统还可以具有与第三泵相关联的选择阀，以及与第三泵和第三致动器相关联的第一切换阀。 第一切换阀可以在第一位置和第三位置之间移动，在第一位置，第三泵以闭环方式连接到第三致动器，以沿第一方向移动第三致动器，第二位置将第三泵连接到第三泵 第三致动器以闭环方式沿第二方向移动第三致动器，以及第三位置，第三泵连接到选择阀。
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公开(公告)号：US20130098010A1
公开(公告)日：2013-04-25
申请号：US13278479
申请日：2011-10-21
CPC分类号： F15B7/003 , E02F9/2228 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30595 , F15B2211/3144 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/781 , F15B2211/785 , Y02P80/13
摘要： A hydraulic system is disclosed having first, second, and third pumps. The hydraulic system may also have a first actuator connected to the first pump in closed-loop manner, a second actuator connected to the second pump in closed-loop manner, and a third actuator. The hydraulic system may further have a selector valve associated with the third pump, and a first switching valve associated with the third pump and the third actuator. The first switching valve may be movable between a first position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a first direction, a second position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a second direction, and a third position at which the third pump is connected to the selector valve.
摘要翻译： 公开了一种具有第一，第二和第三泵的液压系统。 液压系统还可以具有以闭环方式连接到第一泵的第一致动器，以闭环方式连接到第二泵的第二致动器和第三致动器。 液压系统还可以具有与第三泵相关联的选择阀，以及与第三泵和第三致动器相关联的第一切换阀。 第一切换阀可以在第一位置和第三位置之间移动，在第一位置，第三泵以闭环方式连接到第三致动器，以沿第一方向移动第三致动器，第二位置将第三泵连接到第三泵 第三致动器以闭环方式沿第二方向移动第三致动器，以及第三位置，第三泵连接到选择阀。
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公开(公告)号：US07260931B2
公开(公告)日：2007-08-28
申请号：US11287342
申请日：2005-11-28
CPC分类号： F16D31/02 , E02F9/2203 , E02F9/2228 , E02F9/226 , E02F9/2292 , F15B11/163 , F15B2211/20576 , F15B2211/6306 , F15B2211/6346 , F15B2211/665 , F15B2211/7053 , F15B2211/7058
摘要： A hydraulic control system for a work machine is disclosed. The hydraulic control system has a fluid actuator, a supply of pressurized fluid, and a control valve movable to selectively pass pressurized fluid to the fluid actuator. The hydraulic control system also has a sensor configured to sense the pressure of the pressurized fluid passed to the fluid actuator and a controller in communication with the control valve and the sensor. The controller is configured to receive an input indicative of a desired velocity of the fluid actuator and to determine a fluid flow rate corresponding to the desired velocity. The controller is also configured to determine a ratio of the sensed pressure to a stall pressure of the supply and to scale down the determined flow rate an amount based on the determined ratio. The controller is further configured to move the control valve an amount corresponding to the scaled down flow rate.
摘要翻译： 公开了一种用于作业机械的液压控制系统。 液压控制系统具有流体致动器，加压流体的供应和可移动以选择性地将加压流体传递到流体致动器的控制阀。 液压控制系统还具有传感器，其构造成感测传递到流体致动器的加压流体的压力和与控制阀和传感器连通的控制器。 控制器被配置为接收指示流体致动器的期望速度的输入并且确定对应于期望速度的流体流速。 控制器还被配置为确定感测到的压力与电源的失速压力的比率，并且基于所确定的比例来将确定的流量减小量。 控制器还被配置成使控制阀移动与缩小的流量对应的量。
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公开(公告)号：US08631650B2
公开(公告)日：2014-01-21
申请号：US12874243
申请日：2010-09-02
IPC分类号： F15B13/02
CPC分类号： F15B11/16 , E02F9/2235 , E02F9/2296 , F15B21/08 , F15B2211/20546 , F15B2211/3053 , F15B2211/30575 , F15B2211/3144 , F15B2211/50518 , F15B2211/6309 , F15B2211/6313
摘要： A hydraulic system is disclosed having at least two hydraulic circuits. The disclosed system apportions flow between the two hydraulic circuits based on an assumed flow rate that is held constant in both power-limited and non-power-limited conditions.
摘要翻译： 公开了具有至少两个液压回路的液压系统。 所公开的系统分配在两个液压回路之间基于在功率受限和非功率受限条件下保持恒定的假定流量流动。
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公开(公告)号：US07559197B2
公开(公告)日：2009-07-14
申请号：US11907768
申请日：2007-10-17
申请人： Michael T. Verkuilen
发明人： Michael T. Verkuilen
IPC分类号： F16D31/02
CPC分类号： F15B11/17 , E02F9/2242 , E02F9/2253 , E02F9/2292 , F15B11/162 , F15B21/087 , F15B2211/20576 , F15B2211/255 , F15B2211/30595 , F15B2211/327 , F15B2211/40515 , F15B2211/413 , F15B2211/426 , F15B2211/6654 , F15B2211/7142 , F15B2211/783
摘要： A hydraulic control system for a machine is disclosed. The hydraulic control system may have a first fluid actuator, a first pump configured to produce a first stream of pressurized fluid, a second fluid actuator, and a second pump configured to produce a second stream of pressurized fluid. The hydraulic control system may further have a combiner valve, and a controller. The controller may be configured to receive an operator input indicative of a desired velocity for the first fluid actuator, determine a flow rate for the first fluid actuator corresponding to the desired velocity, and determine a flow capacity of the first pump. The controller may also be configured to move the combiner valve to combine the second stream of pressurized fluid with the first stream of pressurized fluid when the determined flow rate for the first fluid actuator is greater than the determined flow capacity of the first pump.
摘要翻译： 公开了一种用于机器的液压控制系统。 液压控制系统可以具有第一流体致动器，构造成产生第一加压流体流的第一泵，第二流体致动器和被配置成产生第二加压流体流的第二泵。 液压控制系统还可以具有组合阀和控制器。 控制器可以被配置为接收指示用于第一流体致动器的期望速度的操作者输入，确定对应于期望速度的第一流体致动器的流量，并且确定第一泵的流量。 当所确定的第一流体致动器的流量大于所确定的第一泵的流量时，所述控制器还可被配置成移动所述组合阀以将所述第二加压流体流与所述第一加压流体流组合。
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