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公开(公告)号：US09469971B2
公开(公告)日：2016-10-18
申请号：US13324620
申请日：2011-12-13
摘要： A hydraulic system is adapted to recover potential and kinetic energy of a work attachment of a work machine. A valve arrangement may configure the hydraulic system in various modes. The hydraulic system may provide suspension and/or actuation for the work attachment. The energy of the work attachment may move a rod of a first cylinder. The rod may pressurize fluid within the first cylinder. The pressurized fluid may flow from the first cylinder through a valve and into an accumulator. The first cylinder may amplify pressure of the fluid. The pressurized fluid in the accumulator may actuate the first cylinder. The movement of the rod of the first cylinder may cause simultaneous actuation of a second cylinder. A controller may monitor pressures and positions of components of the hydraulic system and control the valve arrangement.
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12.发明申请Fault detection, isolation and reconfiguration systems and methods for controlling electrohydraulic systems used in construction equipment 有权故障检测，隔离和重新配置系统以及用于控制建筑设备中使用的电液系统的方法公开(公告)号：US20120232756A1
公开(公告)日：2012-09-13
申请号：US13385779
申请日：2012-03-05
申请人： QingHui Yuan , Michael Berne Rannow , Wade Leo Gehlhoff , Christy William Schottler , Vishal Mahulkar
发明人： QingHui Yuan , Michael Berne Rannow , Wade Leo Gehlhoff , Christy William Schottler , Vishal Mahulkar
CPC分类号： E02F9/268 , E02F9/226 , E02F9/2278 , E02F9/2296 , E02F9/267 , F15B19/002 , F15B19/005 , G05B23/0275 , G05B23/0286 , G05B23/0289
摘要： The present disclosure relates to fault detection, isolation and reconfiguration schemes, architectures and methods for use in electrohydraulic actuation systems for construction equipment. In one embodiment, a supervisory controller adapted to interface with a main controller of the construction vehicle is provided. A plurality of control nodes that interface with the supervisory controller are also disclosed, each of which includes pressure and position sensors. The nodes also include a first actuator control node for controlling operation of a first hydraulic actuator, a second actuator control node for controlling operation of a second hydraulic actuator, and a pump control node. The control system has an architecture in which faults are detected and isolated at the supervisory controller level and, where possible, within each of the control nodes at a sensor level, a component level, and a subsystem level.
摘要翻译： 本公开涉及用于建筑设备的电动液压致动系统中的故障检测，隔离和重新配置方案，结构和方法。 在一个实施例中，提供了适于与施工车辆的主控制器相接合的监控控制器。 还公开了与监控控制器接口的多个控制节点，每个控制节点包括压力和位置传感器。 节点还包括用于控制第一液压致动器的操作的第一致动器控制节点，用于控制第二液压致动器的操作的第二致动器控制节点和泵控制节点。 控制系统具有这样的架构，其中在监控控制器级别检测和隔离故障，并且在可能的情况下，在传感器级别，组件级别和子系统级别内的每个控制节点内。
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公开(公告)号：US07984785B2
公开(公告)日：2011-07-26
申请号：US12039599
申请日：2008-02-28
CPC分类号： B62D1/22 , B62D5/09 , F15B2211/20538 , F15B2211/30565 , F15B2211/3144 , F15B2211/31576 , F15B2211/324 , F15B2211/329 , F15B2211/605 , F15B2211/61 , F15B2211/6346 , F15B2211/7054 , F15B2211/8757 , Y10T137/2514 , Y10T137/265 , Y10T137/86493 , Y10T137/877
摘要： A steering system includes a fluid pump and an electro-hydraulic steering circuit in selective fluid communication with the fluid pump. The electro-hydraulic steering circuit defines a first flow path having a first proportional valve and a first load-sense passage in selective communication with the first proportional valve. The first proportional valve includes a closed position. A hydrostatic steering circuit is in selective fluid communication with the fluid pump and defines a second flow path having a second proportional valve and a second load-sense passage in selective fluid communication with the second proportional valve. The second flow path is in a parallel flow configuration with the first flow path. An isolation valve is disposed in the first flow path in series with the first proportional valve. The isolation valve includes a closed position and is piloted to the closed position by fluid communicated through the second load-sense passage.
摘要翻译： 转向系统包括流体泵和与流体泵选择性流体连通的电动液压转向回路。 电动液压转向回路限定了具有与第一比例阀选择性连通的第一比例阀和第一负载检测通道的第一流路。 第一比例阀包括关闭位置。 静液压转向回路与流体泵选择性地流体连通，并且限定具有第二比例阀的第二流路和与第二比例阀选择性流体连通的第二负载感测通道。 第二流动路径处于与第一流动路径平行的流动配置。 隔离阀设置在与第一比例阀串联的第一流路中。 隔离阀包括关闭位置，并且通过第二负载感测通道连通的流体被引导到关闭位置。
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公开(公告)号：US20110174393A1
公开(公告)日：2011-07-21
申请号：US12690724
申请日：2010-01-20
CPC分类号： F15B11/006 , F15B13/0426 , F15B2211/30515 , F15B2211/30575 , F15B2211/329 , F15B2211/355 , F15B2211/7053 , F15B2211/8609 , Y10T137/7761 , Y10T137/7837 , Y10T137/86493 , Y10T137/86879 , Y10T137/86928 , Y10T137/87056 , Y10T137/87201 , Y10T137/87225 , Y10T137/87241
摘要： A valve assembly includes a valve housing defining a service passage, a first bore in fluid communication with the service passage, a first passage, a second bore in communication with the service passage and a second passage. The first bore has an inlet portion, a first service portion in communication with the service passage, and a first load holding portion. The first passage is in communication with the first load holding portion and the service passage. The second bore has a return portion, a second service portion in fluid communication with the first service passage, and a second load holding portion. The second passage is in selective communication with the second load holding portion of the second bore and the return passage. A valve is disposed in the second passage. The valve allows fluid to flow only in a direction from the second load holding portion to the return passage.
摘要翻译： 阀组件包括限定服务通道的阀壳体，与服务通道流体连通的第一孔，第一通道，与服务通道连通的第二孔和第二通道。 第一孔具有入口部分，与服务通道连通的第一服务部分和第一负载保持部分。 第一通道与第一负载保持部分和服务通道连通。 第二孔具有返回部分，与第一服务通道流体连通的第二服务部分和第二负载保持部分。 第二通道与第二孔的第二负载保持部分和返回通道选择性连通。 阀设置在第二通道中。 阀允许流体仅在从第二负载保持部分到返回通道的方向上流动。
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公开(公告)号：US20090272598A1
公开(公告)日：2009-11-05
申请号：US12114061
申请日：2008-05-02
申请人： Wade Leo Gehlhoff
发明人： Wade Leo Gehlhoff
IPC分类号： B62D5/08
摘要： A steering system includes a fluid actuator, a first steering circuit in selective fluid communication with the fluid actuator, and a second steering circuit in selective fluid communication with the fluid actuator and disposed in parallel to the first steering circuit. The second steering circuit includes a load-reaction feature and an isolation valve with the isolation valve being adapted to enable and disable the load-reaction feature.
摘要翻译： 转向系统包括流体致动器，与流体致动器选择性流体连通的第一转向回路和与流体致动器选择性流体连通并与第一转向回路平行设置的第二转向回路。 第二转向电路包括负载反应特征和隔离阀，隔离阀适于启用和禁用负载反应特征。
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