公开(公告)号：US20150167699A1

公开(公告)日：2015-06-18

申请号：US14407981

申请日：2013-08-09

申请人： KAYABA INDUSTRY CO., LTD.

发明人： Takeshi Terao ,  Masayuki Nakamura

IPC分类号： F15B11/024 ,  F15B21/14 ,  E02F9/22

CPC分类号： F15B11/024 ,  E02F9/2217 ,  F15B13/021 ,  F15B13/0403 ,  F15B21/14 ,  F15B2011/0246

摘要： A switching valve includes a spool, a first cylinder port that communicates with the piston side chamber, a second cylinder port that communicates with the rod side chamber, a bridge passage having a first opening which is adjacent to the first cylinder port and a second opening which is adjacent to the second cylinder port, a regeneration passage formed in the spool to connect the second cylinder port communicating with the rod side chamber to the first cylinder port in accordance with a switching position of the spool, and a first communication port and a second communication port formed in the spool to communicate with the regeneration passage. The first communication port communicates with the second opening of the bridge passage, which is adjacent to the second cylinder port, and the second communication port communicates with the second cylinder port in accordance with the switching position of the spool.

摘要翻译： 切换阀包括阀芯，与活塞侧室连通的第一气缸端口，与杆侧室连通的第二气缸端口，具有与第一气缸端口相邻的第一开口的桥接通道和第二开口 其与所述第二气缸端口相邻，形成在所述阀芯中的再生通路，其根据所述阀芯的切换位置将与所述杆侧室连通的所述第二气缸端口连接到所述第一气缸端口，以及第一连通口和 第二通信端口形成在线轴中以与再生通道连通。 第一通信端口与第二气缸端口相邻的桥接通道的第二开口连通，并且第二连通口根据阀芯的切换位置与第二气缸端口连通。

公开(公告)号：US20020108486A1

公开(公告)日：2002-08-15

申请号：US09963056

申请日：2001-09-26

发明人： Naoto Sannomiya ,  Sotaro Tanaka

IPC分类号： F15B011/08

CPC分类号： E02F9/2296 ,  E02F9/2217 ,  E02F9/2235 ,  E02F9/226 ,  E02F9/2285 ,  F15B11/024 ,  F15B21/08 ,  F15B2011/0246 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30525 ,  F15B2211/3058 ,  F15B2211/3116 ,  F15B2211/3127 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/41527 ,  F15B2211/426 ,  F15B2211/428 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/633 ,  F15B2211/6654 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/7128 ,  F15B2211/7135 ,  F15B2211/78 ,  F15B2211/782 ,  F15B2211/8609

摘要： A hydraulic recovery system for a construction machine comprises a recovery valve for supplying at least a part of a hydraulic fluid from a rod-side line, through which the hydraulic fluid is drained from a rod-side hydraulic chamber of an arm hydraulic cylinder, to a bottom-side line through a variable throttle, and a throttle valve for returning the remaining part of the hydraulic fluid, which is not recovered, from the rod-side line to a hydraulic reservoir through a variable throttle. Opening areas of those variable throttles are controlled depending on an arm flow rate supplied from hydraulic pumps to the arm hydraulic cylinder.

摘要翻译： 一种用于建筑机械的液压回收系统，包括一个回收阀，用于从杆侧线路供给至少一部分液压流体，将液压流体从液压缸的杆侧液压室排出， 通过可变节流阀的底侧管路，以及节流阀，用于通过可变节流阀将未被回收的液压流体的剩余部分从杆侧管路返回到液压储存器。 这些可变节流阀的开口面积根据从液压泵提供给臂液压缸的臂流量来控制。

公开(公告)号：US20230235755A1

公开(公告)日：2023-07-27

申请号：US18001650

申请日：2021-04-27

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： Tomomichi NOSE ,  Hayato KAWASAKI ,  Hideyasu MURAOKA ,  Nobuyuki KINOSHITA

IPC分类号： F15B11/042 ,  F15B11/044 ,  F15B11/024

CPC分类号： F15B11/042 ,  F15B11/044 ,  F15B11/024 ,  F15B2011/0246 ,  F15B2211/327 ,  F15B2211/351 ,  F15B2211/353 ,  F15B2211/6309

摘要： This hydraulic drive system includes: a hydraulic pump that supplies a working fluid to a hydraulic actuator; a meter-in control valve that controls a flow rate of the working fluid flowing from the hydraulic pump to the hydraulic actuator; a meter-out control valve that controls a flow rate of the working fluid being drained from the hydraulic actuator into a tank; and a regeneration valve that supplies, to the hydraulic actuator, the working fluid drained from the hydraulic actuator. The meter-out control valve is connected to the hydraulic actuator in parallel with the regeneration valve.

公开(公告)号：US09890518B2

公开(公告)日：2018-02-13

申请号：US14431062

申请日：2013-10-15

申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

发明人： Kensuke Sato ,  Tsuyoshi Nakamura ,  Kouji Ishikawa

IPC分类号： E02F9/22 ,  F15B21/14 ,  E02F9/20 ,  F15B11/024

CPC分类号： E02F9/2217 ,  E02F9/2075 ,  E02F9/2095 ,  E02F9/2221 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/024 ,  F15B21/14 ,  F15B2011/0246 ,  F15B2211/20515 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/3058 ,  F15B2211/40515 ,  F15B2211/41527 ,  F15B2211/41563 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/88

摘要： During boom-midair lowering operation in which a front work implement 130 can be turned under the self-weight of a boom 131, a hydraulic pump/motor 7 is operated as a motor to operate a generator/electric motor 10 as a generator. Power generation operation is performed by the hydraulic fluid discharged from a bottom-side chamber 5b of a boom cylinder 5 to recover positional energy. During jack-up in which the front work implement 130 cannot be turned under the self-weight of the boom 131, the generator/electric motor 10 is operated as an electric motor to operate the hydraulic pump/motor 7 as a pump. The jack-up is performed by supplying the hydraulic fluid from the bottom-side chamber 5b to rod-side chamber 5a of the boom cylinder 5 without supplying the hydraulic fluid from the main pump 2 to the rod-side chamber 5a of the boom cylinder 5.

公开(公告)号：US09810243B2

公开(公告)日：2017-11-07

申请号：US14407981

申请日：2013-08-09

申请人： KAYABA INDUSTRY CO., LTD.

发明人： Takeshi Terao ,  Masayuki Nakamura

IPC分类号： F15B11/024 ,  F15B13/04 ,  E02F9/22 ,  F15B21/14 ,  F15B13/02

CPC分类号： F15B11/024 ,  E02F9/2217 ,  F15B13/021 ,  F15B13/0403 ,  F15B21/14 ,  F15B2011/0246

摘要： A switching valve includes a spool, a first cylinder port that communicates with the piston side chamber, a second cylinder port that communicates with the rod side chamber, a bridge passage having a first opening which is adjacent to the first cylinder port and a second opening which is adjacent to the second cylinder port, a regeneration passage formed in the spool to connect the second cylinder port communicating with the rod side chamber to the first cylinder port in accordance with a switching position of the spool, and a first communication port and a second communication port formed in the spool to communicate with the regeneration passage. The first communication port communicates with the second opening of the bridge passage, which is adjacent to the second cylinder port, and the second communication port communicates with the second cylinder port in accordance with the switching position of the spool.

公开(公告)号：US11815109B2

公开(公告)日：2023-11-14

申请号：US17755362

申请日：2020-09-30

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： Tomomichi Nose ,  Hayato Kawasaki ,  Hideyasu Muraoka ,  Nobuyuki Kinoshita

IPC分类号： F15B21/14 ,  F15B11/024 ,  E02F9/22 ,  F15B11/08

CPC分类号： F15B21/14 ,  E02F9/2217 ,  F15B11/024 ,  F15B11/08 ,  F15B2011/0246 ,  F15B2211/3058 ,  F15B2211/6313

摘要： A regeneration device includes: a regeneration valve that controls the flow rate of an operating fluid being drained from one port of a cylinder; a non-return valve that allows a regenerative flow of the operating fluid from the regeneration valve to the other port of the cylinder and blocks an opposite flow of the operating fluid; and an exhaust valve that controls the flow rate of the operating fluid output from the regeneration valve being drained to a tank. The regeneration valve controls the flow rate independently of the exhaust valve.

公开(公告)号：US09835179B2

公开(公告)日：2017-12-05

申请号：US14785887

申请日：2014-03-31

申请人： Danfoss Power Solutions ApS

发明人： Frede Callesen ,  Dirk Wroblewski

IPC分类号： F16K11/00 ,  F15B11/024 ,  F15B15/14 ,  F16K3/02 ,  G05D7/06 ,  G05D16/20

CPC分类号： F15B11/024 ,  F15B15/149 ,  F15B2011/0246 ,  F15B2211/30565 ,  F15B2211/351 ,  F15B2211/353 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/665 ,  F15B2211/6654 ,  F15B2211/7053 ,  F15B2211/761 ,  F16K3/0254 ,  G05D7/0652 ,  G05D16/204

摘要： A hydraulic valve arrangement (1) is provided comprising comprising a supply port arrangement having a high pressure port (2) and a low pressure port (4), a working port arrangement having two working ports (6, 7), a first valve (13) arranged between said high pressure port (2) and said working port arrangement (6, 7), a second valve (14) arranged between said low pressure port (4) and said working port arrangement (6, 7), a controller (19) for controlling said first valve (13) and said second valve (14), said controller (19) having an input connection (20) for receiving a signal of an operator input device, and a regenerative flow path which can be established by means of at least one of said first valve (13) and said second valve (14). The function of such a hydraulic valve arrangement should be enhanced. To this end said controller (19) said controller interrupts said regenerative flow path when a feed pressure at said working port arrangement (6, 7) exceeds a predetermined pressure level.

公开(公告)号：US09664209B2

公开(公告)日：2017-05-30

申请号：US14407089

申请日：2013-08-05

申请人： KAYABA INDUSTRY CO., LTD.

发明人： Haruhiko Kawasaki ,  Masahiro Egawa

IPC分类号： F15B11/024 ,  F15B21/08 ,  F15B21/14 ,  E02F9/20 ,  E02F9/22 ,  F01B23/10

CPC分类号： F15B11/024 ,  E02F9/2075 ,  E02F9/2095 ,  E02F9/2217 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  F01B23/10 ,  F15B21/082 ,  F15B21/14 ,  F15B2011/0246 ,  F15B2211/20507 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3058 ,  F15B2211/6658 ,  F15B2211/7058 ,  F15B2211/763 ,  F15B2211/88

摘要： A control system for hybrid construction machine includes: an operation valve for operating a boom; a variable displacement type fluid pressure motor; a distribution mechanism adapted to adjust a flow to be distributed to the fluid pressure motor; a motor generator adapted to be rotated integrally with the fluid pressure motor; a variable displacement type assist pump adapted to be rotated integrally with the motor generator; a distribution mechanism control unit adapted to control the distribution mechanism; a tilt angle control unit adapted to control tilt angles of the fluid pressure motor and the assist pump; and a motor generator control unit adapted to maintain a rotation speed of the motor generator at a target rotation speed. The target rotation speed at the time of boom regeneration control is set to higher than the target rotation speed in a case where only an assist control is carried out.

公开(公告)号：US20150252554A1

公开(公告)日：2015-09-10

申请号：US14431062

申请日：2013-10-15

申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

发明人： Kensuke Sato ,  Tsuyoshi Nakamura ,  Kouji Ishikawa

IPC分类号： E02F9/22 ,  F15B11/024 ,  F15B21/14 ,  E02F9/20

CPC分类号： E02F9/2217 ,  E02F9/2075 ,  E02F9/2095 ,  E02F9/2221 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/024 ,  F15B21/14 ,  F15B2011/0246 ,  F15B2211/20515 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/3058 ,  F15B2211/40515 ,  F15B2211/41527 ,  F15B2211/41563 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/88

摘要： During boom-midair lowering operation in which a front work implement 130 can be turned under the self-weight of a boom 131, a hydraulic pump/motor 7 is operated as a motor to operate a generator/electric motor 10 as a generator. Power generation operation is performed by the hydraulic fluid discharged from a bottom-side chamber 5b of a boom cylinder 5 to recover positional energy. During jack-up in which the front work implement 130 cannot be turned under the self-weight of the boom 131, the generator/electric motor 10 is operated as an electric motor to operate the hydraulic pump/motor 7 as a pump. The jack-up is performed by supplying the hydraulic fluid from the bottom-side chamber 5b to rod-side chamber 5a of the boom cylinder 5 without supplying the hydraulic fluid from the main pump 2 to the rod-side chamber 5a of the boom cylinder 5.

摘要翻译： 在起重臂 - 空降降低操作中，前作业工具130可以在悬臂131的自重下转动，液压泵/马达7作为电动机操作，以发电机/电动机10作为发电机。 通过从动臂缸5的底侧室5b排出的液压流体进行发电运转，以恢复位置能量。 在起重工具130不能在起重臂131的自重下不能转动的起升期间，发电机/电动机10作为电动机操作，以作为泵操作液压泵/电动机7。 通过将液压油从底侧室5b供给到动臂缸5的杆侧室5a而不将液压流体从主泵2供给到动臂缸的杆侧室5a来进行自升式 5。

公开(公告)号：US20150176609A1

公开(公告)日：2015-06-25

申请号：US14407089

申请日：2013-08-05

申请人： KAYABA INDUSTRY CO., LTD.

发明人： Haruhiko Kawasaki ,  Masahiro Egawa

IPC分类号： F15B11/024 ,  F01B23/10 ,  F15B21/14

CPC分类号： F15B11/024 ,  E02F9/2075 ,  E02F9/2095 ,  E02F9/2217 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  F01B23/10 ,  F15B21/082 ,  F15B21/14 ,  F15B2011/0246 ,  F15B2211/20507 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3058 ,  F15B2211/6658 ,  F15B2211/7058 ,  F15B2211/763 ,  F15B2211/88

摘要： A control system for hybrid construction machine includes: an operation valve for operating a boom; a variable displacement type fluid pressure motor; a distribution mechanism adapted to adjust a flow to be distributed to the fluid pressure motor; a motor generator adapted to be rotated integrally with the fluid pressure motor; a variable displacement type assist pump adapted to be rotated integrally with the motor generator; a distribution mechanism control unit adapted to control the distribution mechanism; a tilt angle control unit adapted to control tilt angles of the fluid pressure motor and the assist pump; and a motor generator control unit adapted to maintain a rotation speed of the motor generator at a target rotation speed. The target rotation speed at the time of boom regeneration control is set to higher than the target rotation speed in a case where only an assist control is carried out.

摘要翻译： 一种用于混合动力施工机械的控制系统，包括：操作吊杆的操作阀; 可变排量型流体压力马达; 分配机构，其适于调节流向所述流体压力马达的流量; 适于与所述流体压力马达一体地旋转的马达发电机; 适于与电动发电机一体旋转的可变排量型辅助泵; 适于控制分配机构的分配机构控制单元; 倾斜角度控制单元，其适于控制所述流体压力马达和所述辅助泵的倾斜角; 以及适于将电动发电机的转速保持在目标转速的电动发电机控制单元。 在仅执行辅助控制的情况下，将起重臂再生控制时的目标转速设定为高于目标转速。