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公开(公告)号：US20130047599A1
公开(公告)日：2013-02-28
申请号：US13222990
申请日：2011-08-31
IPC分类号： F16H61/4035 , F16D31/02 , F15B13/01 , F16K17/04 , F16K15/00
CPC分类号： F16D48/02 , E02F9/2228 , E02F9/2267 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B2211/20523 , F15B2211/20553 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/30515 , F15B2211/50527 , F15B2211/613 , F15B2211/7053 , Y10T137/7858
摘要： A hydraulic system is disclosed. The hydraulic system may have a pump, a hydraulic actuator, and first and second passages fluidly connecting the pump to the hydraulic actuator in a closed-loop. The hydraulic system may also have a control valve, and a load-holding valve configured to selectively lock movement of the hydraulic actuator. The load-holding valve may include a valve block at least partially defining a pump passage, an actuator passage, a control passage, a restricted passage connecting the actuator passage and the control passage, and a bypass passage connecting the actuator passage and the control passage. The load-holding valve may also include a valve element movable between a first position at which flow between the pump and the hydraulic actuator is blocked, and a second position at which fluid is allowed to flow between the pump and the hydraulic actuator, the valve element being spring-biased toward the first position.
摘要翻译： 公开了一种液压系统。 液压系统可以具有泵，液压致动器以及在闭环中将泵流体地连接到液压致动器的第一和第二通路。 液压系统还可以具有控制阀和构造成选择性地锁定液压致动器的运动的负载保持阀。 负载保持阀可以包括至少部分地限定泵通道的阀块，致动器通道，控制通道，连接致动器通道和控制通道的限制通道以及连接致动器通道和控制通道的旁通通道 。 负载保持阀还可以包括阀元件，该阀元件可以在泵和液压致动器之间的流动被阻挡的第一位置和允许流体在泵和液压致动器之间流动的第二位置之间移动，阀 元件被弹簧偏置到第一位置。
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公开(公告)号：US09080310B2
公开(公告)日：2015-07-14
申请号：US13278556
申请日：2011-10-21
IPC分类号： F16D31/02 , F15B13/042 , E02F9/22 , F15B11/00 , F15B11/024 , F15B11/042 , F15B7/00
CPC分类号： E02F9/2217 , E02F9/2235 , E02F9/2285 , E02F9/2289 , F15B7/006 , F15B11/003 , F15B11/024 , F15B11/0423 , F15B2211/20553 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/30515 , F15B2211/3058 , F15B2211/50527 , F15B2211/50563 , F15B2211/613 , F15B2211/625 , F15B2211/6346 , F15B2211/6652 , F15B2211/761 , F15B2211/785 , F15B2211/88 , Y10T137/0379 , Y10T137/85986
摘要： A hydraulic system is disclosed that has first and second passages connecting a pump to an actuator in closed-loop manner, and first and second load-holding valves within the first and second passages. The hydraulic system may also have a regeneration valve connected to the first and second passages between the actuator and the first and second load-holding valves to selectively connect the first and second passages. The hydraulic system may further have a controller configured to cause a control valve to simultaneous move the first and second load-holding valves toward flow-blocking positions when pump displacement is about zero. The controller may also be configured to selectively cause the regeneration valve to connect the first and second passages when pump displacement is non-zero, and to cause only one of the first and second load-holding valves to move to its flow-blocking position when the regeneration valve connects the first and second passages.
摘要翻译： 公开了一种液压系统，其具有以闭环方式将泵连接到致动器的第一和第二通道以及第一和第二通道内的第一和第二负载保持阀。 液压系统还可以具有连接到致动器和第一和第二负载保持阀之间的第一和第二通道的再生阀，以选择性地连接第一和第二通道。 液压系统还可以具有控制器，该控制器构造成当泵排量约为零时使控制阀同时将第一和第二负载保持阀移动到阻流位置。 控制器还可以被配置为当泵排量不为零时选择性地使再生阀连接第一通道和第二通道，并且仅当第一和第二负载保持阀中的一个移动到其阻流位置时， 再生阀连接第一和第二通道。
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公开(公告)号：US08863509B2
公开(公告)日：2014-10-21
申请号：US13222990
申请日：2011-08-31
CPC分类号： F16D48/02 , E02F9/2228 , E02F9/2267 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B2211/20523 , F15B2211/20553 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/30515 , F15B2211/50527 , F15B2211/613 , F15B2211/7053 , Y10T137/7858
摘要： A hydraulic system is disclosed. The hydraulic system may have a pump, a hydraulic actuator, and first and second passages fluidly connecting the pump to the hydraulic actuator in a closed-loop. The hydraulic system may also have a control valve, and a load-holding valve configured to selectively lock movement of the hydraulic actuator. The load-holding valve may include a valve block at least partially defining a pump passage, an actuator passage, a control passage, a restricted passage connecting the actuator passage and the control passage, and a bypass passage connecting the actuator passage and the control passage. The load-holding valve may also include a valve element movable between a first position at which flow between the pump and the hydraulic actuator is blocked, and a second position at which fluid is allowed to flow between the pump and the hydraulic actuator, the valve element being spring-biased toward the first position.
摘要翻译： 公开了一种液压系统。 液压系统可以具有泵，液压致动器以及在闭环中将泵流体地连接到液压致动器的第一和第二通路。 液压系统还可以具有控制阀和构造成选择性地锁定液压致动器的运动的负载保持阀。 负载保持阀可以包括至少部分地限定泵通道的阀块，致动器通道，控制通道，连接致动器通道和控制通道的限制通道以及连接致动器通道和控制通道的旁通通道 。 负载保持阀还可以包括阀元件，该阀元件可以在泵和液压致动器之间的流动被阻挡的第一位置和允许流体在泵和液压致动器之间流动的第二位置之间移动，阀 元件被弹簧偏置到第一位置。
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公开(公告)号：US08966892B2
公开(公告)日：2015-03-03
申请号：US13222945
申请日：2011-08-31
IPC分类号： F15B11/08
CPC分类号： F15B11/08 , F15B2211/20523 , F15B2211/20553 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/30515 , F15B2211/3058 , F15B2211/613 , F15B2211/625 , F15B2211/6355 , F15B2211/7053
摘要： A hydraulic system is disclosed. The hydraulic system may have a primary pump, a hydraulic actuator, and first and second passages fluidly connecting the primary pump to the hydraulic actuator in a closed-loop manner. The hydraulic system may also have a charge circuit, a makeup valve movable to selectively allow charge fluid from the charge circuit to enter the first or second passages, and at least one restricted pilot passage configured to direct pilot fluid to the makeup valve to move the makeup valve and allow the charge fluid into the first and second passages.
摘要翻译： 公开了一种液压系统。 液压系统可以具有主泵，液压致动器以及以闭环方式将主泵流体连接到液压致动器的第一和第二通路。 液压系统还可以具有充电电路，补充阀可移动以选择性地允许来自充电电路的充电流体进入第一或第二通道，以及至少一个限制的先导通道，其被配置为将先导流体引导到补充阀以移动 补充阀，并使进料流体进入第一和第二通道。
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公开(公告)号：US08944103B2
公开(公告)日：2015-02-03
申请号：US13222895
申请日：2011-08-31
IPC分类号： F15B13/043 , F15B7/00 , E02F9/22
CPC分类号： F15B7/006 , E02F9/2217 , E02F9/2235 , E02F9/2267 , E02F9/2289 , E02F9/2296 , F15B2211/20523 , F15B2211/20553 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/30515 , F15B2211/50527 , F15B2211/613 , F15B2211/7053 , Y02P80/13 , Y10T137/85978 , Y10T137/86614 , Y10T137/8663 , Y10T137/87193 , Y10T137/87209 , Y10T137/87249
摘要： A hydraulic system is disclosed. The hydraulic system may have a pump, a tank, a displacement actuator having first and second chambers, a regeneration valve, and a load-holding valve. The hydraulic system may also have a displacement control valve including a valve element, and a stationary cage portion at least partially forming a high-pressure passage fluidly connecting the pump and valve element, a low-pressure passage fluidly connecting the valve element and tank, a first displacement actuator passage fluidly connecting the valve element and first chamber, a second displacement actuator passage fluidly connecting the valve element and second chamber, a load-holding control passage fluidly connecting the valve element and load-holding valve, and a regeneration control passage fluidly connecting the valve element and regeneration valve. The displacement control valve may also include a movable cage portion that is movable to selectively restrict fluid flow through only the first and second displacement actuator passages.
摘要翻译： 公开了一种液压系统。 液压系统可以具有泵，罐，具有第一和第二室的排量致动器，再生阀和负载保持阀。 液压系统还可以具有包括阀元件的位移控制阀和至少部分地形成流体连接泵和阀元件的高压通道的静止保持架部分，流体连接阀元件和油箱的低压通道， 流体连接阀元件和第一室的第一排量致动器通道，流体连接阀元件和第二室的第二排量致动器通道，流体连接阀元件和负载保持阀的负载保持控制通路，再生控制通道 流体连接阀元件和再生阀。 排量控制阀还可以包括可移动的保持架部分，其可移动以选择性地限制流体流过仅第一和第二排量致动器通道。
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公开(公告)号：US20130047592A1
公开(公告)日：2013-02-28
申请号：US13222945
申请日：2011-08-31
IPC分类号： F15B13/042
CPC分类号： F15B11/08 , F15B2211/20523 , F15B2211/20553 , F15B2211/20561 , F15B2211/20569 , F15B2211/27 , F15B2211/30515 , F15B2211/3058 , F15B2211/613 , F15B2211/625 , F15B2211/6355 , F15B2211/7053
摘要： A hydraulic system is disclosed. The hydraulic system may have a primary pump, a hydraulic actuator, and first and second passages fluidly connecting the primary pump to the hydraulic actuator in a closed-loop manner. The hydraulic system may also have a charge circuit, a makeup valve movable to selectively allow charge fluid from the charge circuit to enter the first or second passages, and at least one restricted pilot passage configured to direct pilot fluid to the makeup valve to move the makeup valve and allow the charge fluid into the first and second passages.
摘要翻译： 公开了一种液压系统。 液压系统可以具有主泵，液压致动器以及以闭环方式将主泵流体连接到液压致动器的第一和第二通路。 液压系统还可以具有充电电路，补充阀可移动以选择性地允许来自充电电路的充电流体进入第一或第二通道，以及至少一个限制的先导通道，其被配置为将先导流体引导到补充阀以移动 补充阀，并使进料流体进入第一和第二通道。
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公开(公告)号：US20130098024A1
公开(公告)日：2013-04-25
申请号：US13278895
申请日：2011-10-21
CPC分类号： F15B7/001 , E02F9/2242 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/003 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30575 , F15B2211/30595 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/785 , Y02P80/13
摘要： A hydraulic system includes a first pump, a first actuator fluidly connected to the first pump via a first closed-loop circuit, a second pump, and a second actuator fluidly connected to the second pump via a second closed-loop circuit. The system also includes a third pump, a third actuator fluidly connected to the third pump via a third closed-loop circuit, a fourth pump, and a fourth actuator fluidly connected to the fourth pump via a fourth closed-loop circuit. The system further includes a first combining valve configured to combine fluid from the first and second circuits, a second combining valve configured to combine fluid from the second and third circuits, and a third combining valve configured to combine fluid from the third and fourth circuits. The system also includes a fourth combining valve configured to combine fluid from the first and fourth circuits.
摘要翻译： 液压系统包括第一泵，通过第一闭环回路与第一泵流体连接的第一致动器，第二泵和经由第二闭环回路流体连接到第二泵的第二致动器。 该系统还包括第三泵，通过第三闭环回路与第三泵流体连接的第三致动器，第四泵和通过第四闭环回路流体地连接到第四泵的第四致动器。 该系统还包括构造成组合来自第一和第二回路的流体的第一合并阀，构造成组合来自第二和第三回路的流体的第二组合阀以及被配置为组合来自第三和第四回路的流体的第三组合阀。 该系统还包括构造成组合来自第一和第四回路的流体的第四组合阀。
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公开(公告)号：US08910474B2
公开(公告)日：2014-12-16
申请号：US13278895
申请日：2011-10-21
CPC分类号： F15B7/001 , E02F9/2242 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/003 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30575 , F15B2211/30595 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/785 , Y02P80/13
摘要： A hydraulic system includes a first pump, a first actuator fluidly connected to the first pump via a first closed-loop circuit, a second pump, and a second actuator fluidly connected to the second pump via a second closed-loop circuit. The system also includes a third pump, a third actuator fluidly connected to the third pump via a third closed-loop circuit, a fourth pump, and a fourth actuator fluidly connected to the fourth pump via a fourth closed-loop circuit. The system further includes a first combining valve configured to combine fluid from the first and second circuits, a second combining valve configured to combine fluid from the second and third circuits, and a third combining valve configured to combine fluid from the third and fourth circuits. The system also includes a fourth combining valve configured to combine fluid from the first and fourth circuits.
摘要翻译： 液压系统包括第一泵，通过第一闭环回路与第一泵流体连接的第一致动器，第二泵和经由第二闭环回路流体连接到第二泵的第二致动器。 该系统还包括第三泵，通过第三闭环回路与第三泵流体连接的第三致动器，第四泵和通过第四闭环回路流体地连接到第四泵的第四致动器。 该系统还包括构造成组合来自第一和第二回路的流体的第一合并阀，构造成组合来自第二和第三回路的流体的第二组合阀以及被配置为组合来自第三和第四回路的流体的第三组合阀。 该系统还包括构造成组合来自第一和第四回路的流体的第四组合阀。
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公开(公告)号：US08893490B2
公开(公告)日：2014-11-25
申请号：US13278935
申请日：2011-10-21
CPC分类号： F15B7/001 , E02F9/2242 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/003 , F15B7/006 , F15B11/17 , F15B2211/20546 , F15B2211/20576 , F15B2211/30595 , F15B2211/613 , F15B2211/6346 , F15B2211/7142 , F15B2211/785
摘要： A method of controlling a hydraulic system includes providing fluid to a first actuator with a first pump via a first closed-loop circuit of a machine, and providing fluid to a second actuator with a second pump via a second closed-loop circuit of the machine. The method also includes providing fluid to a third actuator with a third pump via a third closed-loop circuit of the machine, and providing fluid to a fourth actuator with a fourth pump via a fourth closed-loop circuit of the machine. The method further includes forming a combined flow of fluid including fluid from the first circuit and fluid from at least one of the second, third, and fourth circuits, and directing the combined flow to the first actuator while providing fluid to the actuator of the at least one of the second, third, and fourth circuits.
摘要翻译： 一种控制液压系统的方法包括：通过机器的第一闭环回路向第一致动器提供具有第一泵的流体，并且通过机器的第二闭环回路向具有第二泵的第二致动器提供流体 。 该方法还包括通过机器的第三闭环回路向第三致动器提供流体，并通过机器的第四闭环回路向具有第四泵的第四致动器提供流体。 该方法还包括形成包括来自第一回路的流体和来自第二，第三和第四回路中的至少一个的流体的流体的组合流，并将组合流引导到第一致动器，同时向流体施加流体 第二，第三和第四电路中的至少一个。
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公开(公告)号：US09151018B2
公开(公告)日：2015-10-06
申请号：US13250002
申请日：2011-09-30
申请人： Michael L. Knussman
发明人： Michael L. Knussman
CPC分类号： E02F9/2217 , E02F9/2289 , E02F9/2296 , F15B11/16 , F15B15/1476 , F15B2211/20546 , F15B2211/20561 , F15B2211/20569 , F15B2211/255 , F15B2211/27 , F15B2211/30575 , F15B2211/327 , F15B2211/351 , F15B2211/625 , F15B2211/6346 , F15B2211/665 , F15B2211/6652 , F15B2211/6654 , F15B2211/7053 , F15B2211/7107 , F15B2211/7128 , F15B2211/88
摘要： A hydraulic system is disclosed. The hydraulic system may have a pump with variable-displacement, a first linear actuator, and a second linear actuator coupled to the first linear actuator to operate in tandem. The first and second linear actuators may be connected to the pump in closed-loop manner, and each of the first and second linear actuators may have a first chamber and a second chamber separated by a piston. The hydraulic system may also have an accumulator in fluid communication with the second chamber of only the second linear actuator.
摘要翻译： 公开了一种液压系统。 液压系统可以具有可变排量的泵，第一线性致动器和联接到第一线性致动器以串联操作的第二线性致动器。 第一和第二线性致动器可以以闭环方式连接到泵，并且第一和第二线性致动器中的每一个可以具有由活塞分隔开的第一室和第二室。 液压系统还可以具有与只有第二线性致动器的第二室流体连通的蓄能器。
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