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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：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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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：US20130098464A1
公开(公告)日：2013-04-25
申请号：US13278556
申请日：2011-10-21
申请人： Michael L. Knussman
发明人： Michael L. Knussman
IPC分类号： F17D3/00
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：US20130098017A1
公开(公告)日：2013-04-25
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：US08074558B2
公开(公告)日：2011-12-13
申请号：US12149327
申请日：2008-04-30
摘要： An axial piston device for use with a hydraulic system is disclosed. The axial piston device may have a body defining at least one bore and having a central axis, a pump piston disposed within the at least one bore to at least partially define a pumping chamber, and a tiltable plate biased into engagement with the pump piston. The axial piston device may also have an actuator configured to selective tilt the plate relative to the central axis of the body to thereby vary a displacement of the pump piston within the at least one bore. The actuator may have a control piston operatively connected to move the tiltable plate, a rotary motor, and a valve driven by the rotary motor to control fluid communication between the control piston and a source of pressurized fluid to move the control piston.
摘要翻译： 公开了一种用于液压系统的轴向活塞装置。 轴向活塞装置可以具有限定至少一个孔并具有中心轴线的主体，设置在至少一个孔内的泵活塞以至少部分地限定泵送室，以及偏置成与泵活塞接合的可倾斜板。 轴向活塞装置还可以具有构造成选择性地相对于主体的中心轴线倾斜板的致动器，从而改变泵活塞在至少一个孔内的位移。 致动器可以具有可操作地连接以便移动可倾斜板，旋转马达和由旋转马达驱动的阀的控制活塞，以控制控制活塞和加压流体源之间的流体连通以移动控制活塞。
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公开(公告)号：US06460623B1
公开(公告)日：2002-10-08
申请号：US09693491
申请日：2000-10-20
IPC分类号： A01B4106
CPC分类号： A01C7/205 , A01B63/11 , F15B11/028 , F15B11/16 , F15B2211/20553 , F15B2211/30505 , F15B2211/30515 , F15B2211/30525 , F15B2211/3056 , F15B2211/3111 , F15B2211/3144 , F15B2211/324 , F15B2211/50554 , F15B2211/5153 , F15B2211/5155 , F15B2211/528 , F15B2211/7053 , F15B2211/7058 , F15B2211/76 , Y10S111/926
摘要： A hydraulic system (20) for controlling the seed/fertilizer supply system (10) and the down pressure on a plurality of individual row units (12). A secondary supply arrangement (60) interconnects a first control circuit (26) of supply system (10) with a second control circuit (28), when the row units (12) are in a float mode, to provide pressurized fluid for the down force on the row units (12) during operation.
摘要翻译： 一种用于控制种子/肥料供应系统（10）的液压系统（20）和在多个单独行单元（12）上的向下压力。 当行单元（12）处于浮动模式时，辅助供应装置（60）将供应系统（10）的第一控制电路（26）与第二控制电路（28）互连，以向下供应加压流体 操作期间行单元（12）上的力。
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公开(公告)号：US5979504A
公开(公告)日：1999-11-09
申请号：US642038
申请日：1996-05-02
IPC分类号： B62D5/083 , B62D11/18 , F16K31/524
CPC分类号： B62D5/083 , Y10T137/86638 , Y10T137/87064
摘要： A rotary control valve includes a directional control valve having a rotatable valve element for controlling the direction of fluid flow from an input passage to a pair of control ports and from the control ports to a drain passage. A pressure regulating valve is connected to a source of pilot pressure and has a valve spool for controlling the regulated pressure level of pilot fluid in the input passage. A cam is connected to the valve element for unitary rotation therewith. A spring and a plunger are disposed between the valve spool and the cam so that the valve spool is mechanically moved in a rectilinear direction by the cam in either direction from a neutral position to increase the level of the regulated pressure in the input passage proportional to the degree of rotation of the rotatable valve element.
摘要翻译： 旋转控制阀包括方向控制阀，其具有用于控制从输入通道到一对控制端口以及从控制端口到排出通道的流体流动方向的可旋转阀元件。 压力调节阀连接到先导压力源，并具有用于控制输入通道中先导流体的调节压力水平的阀芯。 凸轮连接到阀元件以与其一起旋转。 弹簧和柱塞设置在阀芯和凸轮之间，使得阀芯在直线方向上由凸轮在任一方向上从中性位置机械地移动，以增加输入通道中的调节压力的水平与 可旋转阀元件的旋转度。
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公开(公告)号：US08943819B2
公开(公告)日：2015-02-03
申请号：US13278939
申请日：2011-10-21
申请人： Michael L. Knussman
发明人： Michael L. Knussman
CPC分类号： F15B11/17 , E02F9/2217 , E02F9/2242 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B7/006 , F15B7/008 , F15B2211/20546 , F15B2211/20576 , F15B2211/27 , F15B2211/3111 , F15B2211/3144 , F15B2211/327 , F15B2211/613 , F15B2211/7053 , F15B2211/7058
摘要： A hydraulic system includes a variable displacement first pump, a first linear actuator fluidly connected to the first pump via a first closed-loop circuit, a variable displacement second pump, and second and third linear actuators fluidly connected to the second pump in parallel via a second closed-loop circuit. The system also includes a variable displacement third pump, a fourth linear actuator fluidly connected to the third pump via a third closed-loop circuit, a variable displacement fourth pump, and a first rotary actuator fluidly connected to the fourth pump via a fourth closed-loop circuit. The system further includes a second rotary actuator fluidly connected to the second pump in parallel with the second and third linear actuators. The system also includes a third rotary actuator fluidly connected to the third pump in parallel with the fourth linear actuator.
摘要翻译： 液压系统包括可变排量的第一泵，经由第一闭环回路流体地连接到第一泵的第一线性致动器，可变排量的第二泵，以及通过一个第二泵并联连接到第二泵的第二和第三线性致动器 第二闭环电路。 该系统还包括可变排量第三泵，经由第三闭环回路流体连接到第三泵的第四线性致动器，可变排量第四泵和经由第四闭合回路流体连接到第四泵的第一旋转致动器。 回路电路。 该系统还包括与第二和第三线性致动器平行地流体连接到第二泵的第二旋转致动器。 该系统还包括与第四线性致动器平行地流体连接到第三泵的第三旋转致动器。
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