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公开(公告)号：EP3480474B1
公开(公告)日：2024-08-07
申请号：EP18202034.7
申请日：2018-10-23
CPC分类号： F15B13/01 , F15B13/027 , F15B15/204
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公开(公告)号：EP3358198A1
公开(公告)日：2018-08-08
申请号：EP16850824.0
申请日：2016-07-15
申请人： KYB Corporation
发明人： MATSUURA, Akio
IPC分类号： F15B11/024 , F16K3/26 , F16K11/07
CPC分类号： F16K3/26 , F15B11/024 , F15B13/027 , F15B13/0402 , F16K11/07
摘要： a spool valve device includes a valve body (B), an actuator port (34, 35), a spool (37), a supply passage (33), and a regeneration flow passage (45) formed in the spool (37). An inflow port (46) of the regeneration flow passage (45) always communicates with the actuator port (35), when the spool (37) is placed at a regeneration switching position where a predetermined moving amount from a neutral position is ensured, the outflow port (47) of the regeneration flow passage (45) communicates with the actuator port (34) through the supply passage (33), and when the spool (37) is placed at a position other than the regeneration switching position, the communication between the outflow port (47) and the actuator port (34) is blocked.
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公开(公告)号：EP3329168A1
公开(公告)日：2018-06-06
申请号：EP16733292.3
申请日：2016-06-17
发明人： EBERHARD, Ralph
CPC分类号： F16L39/06 , B23Q11/10 , F15B13/027 , F15B13/0817 , F15B13/0821 , F15B13/0871 , F16K11/22 , F16K11/24 , F16K27/003 , F16K31/0651 , F16L41/03
摘要： A distribution device for at least one fluid that can be conducted in a fluid duct (35) via at least two distribution units (3, 4, 5) is characterized in that at least two of the distribution units (3, 5, 6) that are adjacent to each other jointly delimit a common interface (33) of the fluid duct (35) and in that at least one functional element (11, 61, 73, 87, 91) can be inserted into at least one of said interfaces (33).
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公开(公告)号：EP3201475A2
公开(公告)日：2017-08-09
申请号：EP15779117.9
申请日：2015-09-29
发明人： COOLIDGE, Gregory
IPC分类号： F15B11/16
CPC分类号： F15B11/161 , E02F3/32 , E02F9/2225 , E02F9/2267 , F15B13/026 , F15B13/027 , F15B2211/3105 , F15B2211/3122 , F16K11/07 , F16K31/426
摘要： Exemplary control valves that may be configured as a load sense, closed-center, and/or open-center valve. The control valve may include optional individual valve force sensing to potentially allow an operator to smoothly operate devices operating on low-load work ports even when a variable displacement pump is inducing pressure to operate a device connected to a high-load work port of a separate valve or worksection in the same stack. This optional force sensing may be employed on any or all worksections associated with any valve stack, and may further be included on one or both workports for any given worksection. Each worksection may include parallel and variable paths of fluid supplied by the pump. Also, flow priority to one or more worksections or external valves in a corresponding hydraulic system is optional and can be customized using the variable flow path and a corresponding fixed restriction.
摘要翻译： 示例性的控制阀可以构造为负载传感器，封闭式中心和/或开中心阀。 控制阀可以包括可选的单独的阀力感测，以潜在地允许操作者平稳地操作在低负载工作端口上操作的装置，即使当可变排量泵正在感应压力以操作连接到单独的高负载工作端口的装置时 阀门或工作区域在同一个堆栈中。 这种可选的力感测可以用在与任何阀组相关联的任何或所有工作部位上，并且可以进一步包括在一个或两个工作部位上用于任何给定的工作部位。 每个工作部分可以包括由泵供应的平行和可变的流体路径。 而且，对于相应液压系统中的一个或多个工作部分或外部阀的流量优先是可选的，并且可以使用可变流动路径和相应的固定限制来定制。
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公开(公告)号：EP2947211A4
公开(公告)日：2016-09-28
申请号：EP13871736
申请日：2013-01-18
发明人： JOUNG HEA-GYOON , KIM SUNG-GON
IPC分类号： E02F9/22 , F02D29/04 , F15B11/024 , F15B13/06
CPC分类号： F15B11/024 , E02F9/2217 , E02F9/2225 , E02F9/2228 , E02F9/2282 , E02F9/2296 , F15B13/026 , F15B13/027 , F15B2211/20546 , F15B2211/3133 , F15B2211/505
摘要： Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.
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公开(公告)号：EP2975273A1
公开(公告)日：2016-01-20
申请号：EP14764931.3
申请日：2014-03-13
发明人： CHO, Yong Lak , JANG, Dal Sik , JUNG, Woo Yong , AN, Min Ha , SEO, A Reum , LEE, Sang Woo , JANG, Yoon Seok
IPC分类号： F15B13/02 , E02F9/22 , F15B11/028
CPC分类号： F15B1/027 , E02F9/2217 , E02F9/2267 , E02F9/2289 , E02F9/2292 , E02F9/2296 , F15B1/04 , F15B11/10 , F15B11/17 , F15B13/027 , F15B13/04 , F15B2201/4155 , F15B2201/51 , F15B2211/20561 , F15B2211/20576 , F15B2211/212 , F15B2211/27 , F15B2211/40 , F15B2211/7053 , F15B2211/785
摘要： The present disclosure relates to a hydraulic system for a construction machine, and more particularly, to a hydraulic system for a construction machine including a plurality of actuators, in which each of the actuators includes a pump/motor, is operated under a control of a corresponding pump/motor, and stores working oil in an accumulator or receives the working oil supplemented from the accumulator in accordance with a difference between a flow rate entering the actuator and a flow rate discharged from the actuator.
摘要翻译： 用于建筑机械的液压系统技术领域本发明涉及一种用于建筑机械的液压系统，并且更具体地涉及一种用于包括多个致动器的建筑机械的液压系统，其中每个致动器包括泵/马达， 根据进入致动器的流量和从致动器排出的流量之间的差异，将工作油存储在蓄能器中或接收从蓄能器补充的工作油。
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公开(公告)号：EP2947211B1
公开(公告)日：2018-09-26
申请号：EP13871736.8
申请日：2013-01-18
发明人： JOUNG, Hea-Gyoon , KIM, Sung-Gon
IPC分类号： E02F9/22 , F02D29/04 , F15B11/024 , F15B13/06
CPC分类号： F15B11/024 , E02F9/2217 , E02F9/2225 , E02F9/2228 , E02F9/2282 , E02F9/2296 , F15B13/026 , F15B13/027 , F15B2211/20546 , F15B2211/3133 , F15B2211/505
摘要： Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.
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公开(公告)号：EP2350399B1
公开(公告)日：2018-04-11
申请号：EP09745190.0
申请日：2009-10-19
发明人： ST. AUBIN, Joseph, A. , KOCH, Rodney , ASCHE, Jason , HOESEL, Jeret, L. , VANDERLINDE, Todd, M.
IPC分类号： F15B11/044 , F15B13/02 , E02F9/22
CPC分类号： E02F9/2203 , E02F9/2267 , E02F9/2271 , F15B11/0445 , F15B13/027 , F15B2211/353 , F15B2211/473
摘要： A hydraulic circuit for an actuator that has a piston and piston rod that will move a load in a first direction, and which can be externally loaded in an opposite direction, includes a flow compensated valve between the actuator and a control valve. When the piston in the actuator is moved in the second opposite direction under the external load and the rate of flow of fluid out of the actuator through the flow compensated valve exceeds a selected rate, an orifice is introduced in the flow path to restrict flow from the actuator.
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10.发明授权VENTILVORRICHTUNG, INSBESONDERE IN DER ART EINES RÜCKSCHLAGVENTILS AUSGEBILDET UND VERFAHREN ZUM BETRIEB EINER SOLCHEN VENTILVORRICHTUNG 有权阀装置，尤其是用于止回阀类型的阀装置以及用于操作阀装置的方法
公开(公告)号：EP3149370B1
公开(公告)日：2018-03-21
申请号：EP15722071.6
申请日：2015-05-09
CPC分类号： F16K15/063 , F15B13/027 , F15B13/0405 , F15B21/047
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