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公开(公告)号：US09599127B2
公开(公告)日：2017-03-21
申请号：US14159942
申请日：2014-01-21
申请人： DEERE & COMPANY
CPC分类号： F15B1/26 , F04B23/02 , F04F1/02 , F15B2211/20592 , F15B2211/89 , Y10T137/85978 , Y10T137/86019 , Y10T137/86043 , Y10T137/86083 , Y10T137/86187 , Y10T137/86348
摘要： The invention relates to an system for supplying a hydraulic circuit with hydraulic fluid. The system includes a working reservoir and an auxiliary reservoir connected to the working reservoir by a hydraulic line. An air pump has an inlet connected to a suction line that opens into a liquid-free portion of the auxiliary reservoir so that a negative pressure can be built up in the auxiliary reservoir relative to the atmospheric ambient pressure. The air pump inlet is also connected to a control line, which comprises a control opening which is covered by the hydraulic fluid in the working reservoir, at least before the air pump is started up.
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公开(公告)号：US11326592B2
公开(公告)日：2022-05-10
申请号：US16515932
申请日：2019-07-18
申请人： DEERE & COMPANY
IPC分类号： F04B49/08 , F04B1/295 , F04B49/06 , F04B49/12 , F04B49/00 , F04B1/324 , F04B49/22 , F15B19/00 , F04B49/10
摘要： A method for operating a hydraulic consumer on an electrically actuated control valve includes providing the valve with an open valve position for establishing a connection between a valve inlet and a pilot line for influencing a pivot angle set on an axial piston pump and a system pressure which is present at the valve inlet and dependent on the pivot angle. Data regarding the current system pressure and the current pivot angle are detected and communicated to a control unit. The method includes determining an incorrect setting of the control valve if the control unit detects that a delivery volume flow of the axial piston pump is smaller than a value to be expected based on valve position, or the control unit detects that the system pressure present at the valve inlet is at a maximum without a delivery volume flow flowing in the direction of the hydraulic consumer.
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公开(公告)号：US11359649B2
公开(公告)日：2022-06-14
申请号：US16835775
申请日：2020-03-31
申请人： DEERE & COMPANY
发明人： Michael Meid , Christian Brueser
IPC分类号： F15B20/00
摘要： A hydraulic system of a vehicle includes a first pump for supplying at least one first hydraulic circuit and at least one second pump for supplying at least one second hydraulic circuit with hydraulic medium. The second pump supplies the first hydraulic circuit with hydraulic medium in an emergency mode or when an output pressure of the first pump fails.
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公开(公告)号：US09435358B2
公开(公告)日：2016-09-06
申请号：US14507398
申请日：2014-10-06
申请人： Deere & Company
IPC分类号： F16K31/524 , F15B13/04 , F15B13/044
CPC分类号： F15B13/0402 , F15B13/044 , F15B2211/32 , F15B2211/322 , Y10T137/87217
摘要： A hydraulic directional control valve for activating a hydraulic load, comprising a housing with a pump connection for connecting to a pressure source, a tank connection for connecting to a hydraulic fluid reservoir and a first and second working connection for connecting to the hydraulic load, and a first and a second valve slide, which are held in the housing so as to be linearly movable in a displacement direction.
摘要翻译： 一种用于启动液压负载的液压方向控制阀，包括具有用于连接到压力源的泵连接的壳体，用于连接到液压油箱的油箱连接件和用于连接到液压负载的第一和第二工作连接件;以及 第一和第二阀滑动件，其保持在壳体中，以便沿位移方向线性移动。
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公开(公告)号：US20160169252A9
公开(公告)日：2016-06-16
申请号：US14159942
申请日：2014-01-21
申请人： Deere & Company
CPC分类号： F15B1/26 , F04B23/02 , F04F1/02 , F15B2211/20592 , F15B2211/89 , Y10T137/85978 , Y10T137/86019 , Y10T137/86043 , Y10T137/86083 , Y10T137/86187 , Y10T137/86348
摘要： The invention relates to an system for supplying a hydraulic circuit with hydraulic fluid. The system includes a working reservoir and an auxiliary reservoir connected to the working reservoir by a hydraulic line. An air pump has an inlet connected to a suction line that opens into a liquid-free portion of the auxiliary reservoir so that a negative pressure can be built up in the auxiliary reservoir relative to the atmospheric ambient pressure. The air pump inlet is also connected to a control line, which comprises a control opening which is covered by the hydraulic fluid in the working reservoir, at least before the air pump is started up.
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公开(公告)号：US20150275925A1
公开(公告)日：2015-10-01
申请号：US14159942
申请日：2014-01-21
申请人： Deere & Company
CPC分类号： F15B1/26 , F04B23/02 , F04F1/02 , F15B2211/20592 , F15B2211/89 , Y10T137/85978 , Y10T137/86019 , Y10T137/86043 , Y10T137/86083 , Y10T137/86187 , Y10T137/86348
摘要： The invention relates to an system for supplying a hydraulic circuit with hydraulic fluid. The system includes a working reservoir and an auxiliary reservoir connected to the working reservoir by a hydraulic line. An air pump has an inlet connected to a suction line that opens into a liquid-free portion of the auxiliary reservoir so that a negative pressure can be built up in the auxiliary reservoir relative to the atmospheric ambient pressure. The air pump inlet is also connected to a control line, which comprises a control opening which is covered by the hydraulic fluid in the working reservoir, at least before the air pump is started up.
摘要翻译： 本发明涉及一种用于向液压回路提供液压流体的系统。 该系统包括通过液压管线连接到工作储存器的工作储存器和辅助储存器。 空气泵具有连接到吸入管线的入口，该吸入管线通向辅助储存器的无液体部分，使得相对于大气环境压力可以在辅助储存器中建立负压。 空气泵入口还连接到控制线，控制线包括至少在空气泵启动之前由工作容器中的液压流体覆盖的控制开口。
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