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1. 发明申请

US20070246288A1 Dual force hydraulic steering system for articulated work machine 审中-公开
标题翻译：铰链式工作机械双力液压转向系统
公开(公告)号：US20070246288A1
公开(公告)日：2007-10-25
申请号：US11410167
申请日：2006-04-24
申请人： Daniel Mather , David Mork , Rabie Khalil
发明人： Daniel Mather , David Mork , Rabie Khalil
IPC分类号： B62D5/06
CPC分类号： B62D5/07 , B62D12/00
摘要： An articulated work machine is steered via left and right hydraulic cylinders that swivel a front portion of a work machine relative to a back portion about a vertical articulation axis. When a low force turn is being performed, high pressure is supplied to only one of the left and right hydraulic cylinders. When a high force turn is performed, high pressure is supplied to one of the left and right hydraulic cylinders, and pressurized hydraulic fluid is also supplied to the other of the left and right hydraulic cylinders in proportion to the torque required for the turn. This strategy allows for excess pressurized fluid, which is not used for the steering purpose, to be utilized by hydraulic implements of the work machine to increase performance capabilities while the machine is being steered in low force mode under light steering load.
摘要翻译：铰接式工作机械通过经由左右液压缸转向，该液压缸相对于围绕垂直铰接轴线的后部旋转工作机械的前部。当执行低力转动时，高压仅供给左右液压缸中的一个。当进行大力转动时，向左右液压缸中的一个提供高压，并且与转弯所需的扭矩成比例地将加压液压流体供应到左右液压缸中的另一个。该策略允许不用于转向目的的多余的加压流体被工作机械的液压工具所利用，以在光转向载荷下以低力模式转向机器时提高性能。

2. 发明申请

US20070186548A1 Hydraulic regeneration system 有权
标题翻译：液压再生系统
公开(公告)号：US20070186548A1
公开(公告)日：2007-08-16
申请号：US11341630
申请日：2006-01-30
申请人： David Smith , Daniel Mather
发明人： David Smith , Daniel Mather
IPC分类号： F16D31/02
CPC分类号： F15B21/14 , E02F9/2217 , E02F9/2292 , F15B11/006 , F15B2211/20523 , F15B2211/30575 , F15B2211/625 , F15B2211/7053 , F15B2211/88
摘要： A hydraulic system for a work machine is provided. The hydraulic regeneration system has a tank, a primary source, a first actuator, an accumulator, and a first valve mechanism. The tank is configured to hold a supply of fluid. The primary source is configured to pressurize the fluid and has a suction inlet and a discharge outlet. The first actuator is configured to receive pressurized fluid from the discharge outlet of the primary source. The accumulator is in fluid communication with the tank, the suction inlet of the primary source, and the first actuator. The first valve mechanism is disposed between the suction inlet of the primary source and the accumulator, and is movable between a first position at which fluid returning from the first actuator is directed to the suction inlet of the primary source, and a second position at which fluid returning from the first actuator is directed to only the accumulator.
摘要翻译：提供了一种用于作业机械的液压系统。液压再生系统具有罐，主源，第一致动器，蓄能器和第一阀机构。罐被配置成保持流体供应。主要来源被配置为对流体加压并具有吸入口和排出口。第一致动器构造成从主源的排出口接收加压流体。蓄能器与罐，主源的吸入口和第一致动器流体连通。第一阀机构设置在主源的吸入口和蓄能器之间，并且可在第一位置和第二位置之间移动，在第一位置，第一位置，第一位置从第一致动器返回的流体被引导到主源的吸入口，从第一致动器返回的流体仅被引导到蓄能器。

3. 发明申请

US20070044649A1 Metering valve with integral relief and makeup function 失效
公开(公告)号：US20070044649A1
公开(公告)日：2007-03-01
申请号：US11214957
申请日：2005-08-31
申请人： David Smith , Daniel Mather , Wayne Lark
发明人： David Smith , Daniel Mather , Wayne Lark
IPC分类号： F15B13/04
CPC分类号： F15B13/024 , F15B13/0433 , F15B2211/30505 , F15B2211/30575 , F15B2211/329 , F15B2211/353 , F15B2211/355 , F15B2211/365 , F15B2211/55 , F15B2211/555 , F15B2211/8609 , G05D16/2093
摘要： A metering valve for a work machine hydraulic system is disclosed. The metering valve has an inlet and an outlet, a main poppet, and a solenoid-operated pilot element. The main poppet is movable to pass fluid from the inlet to the outlet, and to block fluid from the inlet to the outlet. The solenoid-operated pilot element is movable between a first position at which pressurized fluid from the inlet pressurizes a control chamber in communication with a control end of the main poppet to urge the main poppet toward the flow-blocking position, and a second position at which the control chamber is communicated with a drain to move the main poppet toward the flow-passing position. The metering valve also has a relief valve element configured to drain pressurized fluid from the control chamber to move the main poppet toward the flow-passing position in response to a pressure at the inlet exceeding a predetermined pressure.

4. 发明申请

US20070175209A1 Hydraulic system having in-sump energy recovery device 失效
标题翻译：具有集水能量回收装置的液压系统
公开(公告)号：US20070175209A1
公开(公告)日：2007-08-02
申请号：US11341629
申请日：2006-01-30
申请人： David Smith , Igor Strashny , Daniel Mather
发明人： David Smith , Igor Strashny , Daniel Mather
IPC分类号： F16D31/02
CPC分类号： F15B21/14 , E02F9/2217 , E02F9/2292 , F15B2211/88
摘要： A hydraulic energy recovery device for a hydraulic system is disclosed. The hydraulic energy recovery device has a first impeller configured to receive a flow of pressurized liquid, and a second impeller configured to pressurize a flow of liquid. The hydraulic energy recovery device also has a common shaft connecting the first and second impellers.
摘要翻译：公开了一种用于液压系统的液压能量回收装置。液压能量回收装置具有构造成接收加压液体流的第一叶轮和被配置为对液体流加压的第二叶轮。液压能量回收装置还具有连接第一和第二叶轮的共同轴。

5. 发明申请

US20070022871A1 Electro-hydraulic metering valve with integral flow control 失效
公开(公告)号：US20070022871A1
公开(公告)日：2007-02-01
申请号：US11192036
申请日：2005-07-29
申请人： David Smith , Daniel Mather
发明人： David Smith , Daniel Mather
IPC分类号： F15B13/04
CPC分类号： G05D7/014 , F15B11/006 , F15B13/0433 , F15B2211/20546 , F15B2211/30575 , F15B2211/3144 , F15B2211/413 , F15B2211/426 , F15B2211/428 , F15B2211/7053 , G05D7/005
摘要： A metering valve for a work machine hydraulic system is disclosed. The metering valve has a valve body with an inlet and an outlet. The metering valve also has a main poppet disposed within the valve body between the inlet and the outlet. The main poppet has a nose end and a chamber end, and is movable between a flow-passing position at which fluid flows from the inlet to the outlet, and a flow-blocking position at which fluid flow between the inlet and outlet is blocked. The metering valve also has a pilot element movable to selectively communicate the chamber end of the main poppet with a drain, thereby affecting movement of the main poppet between the flow-passing and flow-blocking positions. The metering valve further has a solenoid mechanism operable to move the pilot element. The position of the pilot element is affected by a fluid pressure at the inlet.

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