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1. 发明公开

EP2902551A1 Construction machine 有权
标题翻译：建筑机械
公开(公告)号：EP2902551A1
公开(公告)日：2015-08-05
申请号：EP15152144.0
申请日：2015-01-22
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Hijikata, Seiji , Ishikawa, Kouji , Ooki, Takatoshi , Imura, Shinya
IPC分类号： E02F9/22 , B66C13/20 , F15B21/14
CPC分类号： E02F9/2221 , E02F9/2095 , E02F9/2217 , E02F9/2228 , E02F9/2285 , E02F9/2296 , F15B21/082 , F15B21/14 , F15B2211/20523 , F15B2211/40515 , F15B2211/415 , F15B2211/426 , F15B2211/6316 , F15B2211/6651 , F15B2211/6658
摘要： Provided is a construction machine comprising an energy recovery device for recovering hydraulic fluid energy from a hydraulic actuator and being capable of achieving excellent operability even when the power of the prime mover is changed. The construction machine comprises an engine (1), a hydraulic pump (2), a plurality of hydraulic actuators (31 - 34), a plurality of control valves (41 - 44), a plurality of operating devices (71 - 74), an energy recovery device (80), an operation mode selector switch (76), an engine revolution speed dial (77), a pressure sensor (75), and a controller (90) which controls the flow rate of hydraulic fluid recovered by the energy recovery device based on input signals from the operation mode selector switch, the engine revolution speed dial and the pressure sensor.
摘要翻译：本发明提供一种建筑机械，其包括能量回收装置，该能量回收装置用于从液压致动器回收液压流体能量，并且即使在原动机的动力被改变时也能够实现优异的可操作性。该建筑机械包括发动机1，液压泵2，多个液压致动器31〜34，多个控制阀41〜44，多个操作装置71〜74，（80），运转模式选择开关（76），发动机转速刻度盘（77），压力传感器（75）和控制器（90），所述控制器基于来自操作模式选择器开关，发动机转速拨盘和压力传感器的输入信号的能量回收装置。

2. 发明授权

EP2107170B1 HYDRAULIC DRIVE SYSTEM FOR A CIVIL ENGINEERING OR CONSTRUCTION MACHINE. 有权
标题翻译：液压驱动装置，以便一ZIVILBAU-或土方机械。
公开(公告)号：EP2107170B1
公开(公告)日：2012-03-21
申请号：EP09159713.8
申请日：2000-01-18
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Toyooka, Tsukasa , Hirata, Toichi , Sugiyama, Genroku , Ishikawa, Kouji , Nishimura, Masao , Nakamura, Tsuyoshi
IPC分类号： E02F9/22
CPC分类号： E02F9/2267 , E02F9/2239 , E02F9/2242 , E02F9/2271 , E02F9/2292

3. 发明公开

EP2107170A3 Hydraulic driving device of civil engineering and construction machinery 有权
标题翻译：用于Zivilbau-和运土机械液压驱动装置。
公开(公告)号：EP2107170A3
公开(公告)日：2009-11-11
申请号：EP09159713.8
申请日：2000-01-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Toyooka, Tsukasa , Hirata, Toichi , Sugiyama, Genroku , Ishikawa, Kouji , Nishimura, Masao, Hitachi Kenki Tsukubaryo , Nakamura, Tsuyoshi, Hitachi Kenki Tsukubaryo
IPC分类号： E02F9/22
CPC分类号： E02F9/2267 , E02F9/2239 , E02F9/2242 , E02F9/2271 , E02F9/2292
摘要： Provided are hydraulic pumps 1,2, a control valve group 15a connected to the pump 1 and including a bypass on/off valve 7, a control valve group 15b connected to the pump 2 and including a reserve-actuator-controlling, directional control valve 11, a communication line 13 communicating a most upstream side of the control valve group 15a with a supply line 11a to the reserve-actuator-controlling, directional control valve 11, a merge control valve 14 for communicating or cutting off the communication line 13, an interlocked control means for changing over the merge control valve 14 to an open position and the bypass on/off valve 7 to a closed position in association with a change-over operation of the reserve-actuator-controlling, directional control valve 11, and a selective control valve 28 capable of taking one of a state, in which the operation to change over the merge control valve 14 by the interlocked control means is feasible, and another state in which the operation to change over the merge control valve by the interlocked control means is infeasible. A valve opening area control means is provided for controlling drive of said merge control valve 14 such that, when a specific directional control valve included in said first control valve group 15a for controlling drive of an actuator to which a load pressure higher than a load pressure to an actuator controlled by said reserve directional control valve 11 may be applied is operated concurrently with a change-over operation of said reserve directional control valve 11 by said reserve control device 24, a valve opening area of said merge control valve is changed to a predetermined small valve opening area, and
said interlocked control means 26, 27 acts to hold said bypass on/off valve 7 at said closed position in response to a change-over operation of said reserve control device 24 even when said opening area of said merge control valve is reduced by said valve opening area control means 40.

4. 发明公开

EP2107170A2 Hydraulic driving device of civil engineering and construction machinery 有权
标题翻译： HYDRAULISCHE ANTRIEBSANORDNUNGFÜREINE ZIVILBAU- ODER ERDBEWEGUNGSMASCHINE。
公开(公告)号：EP2107170A2
公开(公告)日：2009-10-07
申请号：EP09159713.8
申请日：2000-01-18
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Toyooka, Tsukasa , Hirata, Toichi , Sugiyama, Genroku , Ishikawa, Kouji , Nishimura, Masao, Hitachi Kenki Tsukubaryo , Nakamura, Tsuyoshi, Hitachi Kenki Tsukubaryo
IPC分类号： E02F9/22
CPC分类号： E02F9/2267 , E02F9/2239 , E02F9/2242 , E02F9/2271 , E02F9/2292
摘要： Provided are hydraulic pumps 1,2, a control valve group 15a connected to the pump 1 and including a bypass on/off valve 7, a control valve group 15b connected to the pump 2 and including a reserve-actuator-controlling, directional control valve 11, a communication line 13 communicating a most upstream side of the control valve group 15a with a supply line 11a to the reserve-actuator-controlling, directional control valve 11, a merge control valve 14 for communicating or cutting off the communication line 13, an interlocked control means for changing over the merge control valve 14 to an open position and the bypass on/off valve 7 to a closed position in association with a change-over operation of the reserve-actuator-controlling, directional control valve 11, and a selective control valve 28 capable of taking one of a state, in which the operation to change over the merge control valve 14 by the interlocked control means is feasible, and another state in which the operation to change over the merge control valve by the interlocked control means is infeasible. A valve opening area control means is provided for controlling drive of said merge control valve 14 such that, when a specific directional control valve included in said first control valve group 15a for controlling drive of an actuator to which a load pressure higher than a load pressure to an actuator controlled by said reserve directional control valve 11 may be applied is operated concurrently with a change-over operation of said reserve directional control valve 11 by said reserve control device 24, a valve opening area of said merge control valve is changed to a predetermined small valve opening area, and
said interlocked control means 26, 27 acts to hold said bypass on/off valve 7 at said closed position in response to a change-over operation of said reserve control device 24 even when said opening area of said merge control valve is reduced by said valve opening area control means 40.
摘要翻译：设有液压泵1,2，与泵1连接并包括旁通开关阀7的控制阀组15a，连接到泵2的控制阀组15b，并且包括备用执行器控制方向控制阀如图11所示，将控制阀组15a的最上游侧与供给管线11a连通的通信线路13设置在备用执行器控制方向控制阀11，用于连通或切断通信线路13的合并控制阀14，联锁控制装置，用于将合并控制阀14转换到打开位置，并且旁路开关阀7与备用执行器控制方向控制阀11的转换操作相关联地转换到关闭位置，以及选择控制阀28，其能够采取以下状态之一：其中通过联动控制装置切换合并控制阀14的操作是可行的;以及另一种状态，其中改变o 通过互锁控制装置检查合并控制阀是不可行的。提供一种阀开放区域控制装置，用于控制所述合并控制阀14的驱动，使得当包括在所述第一控制阀组15a中的特定方向控制阀用于控制致动器的驱动时，负载压力高于负载压力可以通过所述储备控制装置24与所述备用方向控制阀11的转换动作同时操作由所述备用方向控制阀11控制的致动器，所述合并控制阀的阀开口面积变为预定的小阀开口面积，并且所述互锁控制装置26,27用于响应于所述储备控制装置24的转换操作，在所述关闭位置处保持所述旁路通/断阀7，即使所述合并的所述开口区域控制阀由所述阀开口区域控制装置40减小。

5. 发明公开

EP0922813A3 hydraulic drive system for hydraulic work vehicle 审中-公开
标题翻译：的液压作业车辆的液压作动系统
公开(公告)号：EP0922813A3
公开(公告)日：2000-04-12
申请号：EP98204096.6
申请日：1998-12-03
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Ishikawa, Kouji , Hirata, Toichi , Sugiyama, Genroku , Toyooka, Tsukasa , Nakamura, Tsuyoshi, c/o Tsukuba-ryo , Gotou, Yasuharu
IPC分类号： E02F9/22
CPC分类号： E02F9/2296 , B60W2710/0644 , E02F9/2235 , E02F9/2246 , E02F9/26
摘要： A hydraulic drive system is provided with a signal guide system for guiding a delivery pressure of a pump (21) as a command pressure via a line (28) and a port (29), another signal guide system for guiding a pilot pressure of a pilot pump (22) as another command pressure via a line (30) and a port (31), a tilting control unit (23) for controlling the displacement of the pump (21) by the command pressures guided to the ports (29,31), a controller (33) having a command current-setting unit (34) for setting a relationship between a target engine speed and a command current, a target engine speed-indicating unit (35) for an engine (20), and a solenoid-operated proportional valve (32) for allowing the pilot pressure of the line (30) to pass as is while no drive signal is outputted from the controller (33) but for being reduced in opening to change the pilot pressure to a smaller value when a drive signal is outputted from the controller (33).

6. 发明公开

EP0908564A3 Control system for prime mover and hydraulic pump of hydraulic construction machine 有权
标题翻译： Steuersystemfürdie Antriebsmaschine und die hydraulische Pumpe einer Baumaschine
公开(公告)号：EP0908564A3
公开(公告)日：1999-11-17
申请号：EP98118904.6
申请日：1998-10-07
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Nakamura, Kazunori , Takahashi, Ei , Toyooka, Tsukasa , Ishikawa, Kouji , Nakamura, Tsuyoshi , Kowatari, Yoichi , Shimamura, Tadatoshi , Sugiyama, Genroku , Hirata, Toichi
IPC分类号： E02F9/22
CPC分类号： E02F9/2285 , E02F9/2235 , E02F9/2246 , E02F9/2282 , E02F9/2292 , E02F9/2296
摘要： A reference pump-delivery-rate calculating portion (70a) calculates a reference delivery rate (QR10) of a hydraulic pump (1) by referring to a table stored in a memory based on a control pilot pressure (PL1) for the hydraulic pump. A target pump-delivery-rate calculating portion (70c) divides the reference delivery rate (QR10) by a ratio (NRC/NR1) of a maximum revolution speed NRC to a target engine revolution speed (NR1), thereby calculating a target delivery rate (QR11). A target pump tilting calculating portions (70e) divides the target delivery rate (QR11) by an actual engine revolution speed (NE1) and a constant (K1), thereby calculating a target tilting (θR1). A solenoid output current calculating portion (70g) calculates a drive current (S11) to provide the target tilting (θR1) and outputs the drive current (S11) to a solenoid control valve (30). The pump delivery rate is thereby controlled with good response following input change of operation instructing means.
摘要翻译：参考泵输送速率计算部分（70a）基于用于液压泵的控制先导压力（PL1）参考存储在存储器中的表格来计算液压泵（1）的参考输送速率（QR10）。目标泵输送速度计算部分（70c）将参考输出速率（QR10）除以最大转速NRC的比（NRC / NR1）与目标发动机转速（NR1），从而计算目标输送速率（QR11）。目标泵倾转计算部（70e）将目标输送速度（QR11）除以实际发动机转速（NE1）和常数（K1），从而计算目标倾斜（＆amp; t; R1）。螺线管输出电流计算部（70g）计算驱动电流（S11）以提供目标倾斜（＆amp; t; R1），并将驱动电流（S11）输出到电磁控制阀（30）。由此，在输入变化操作指示装置之后，以良好的响应来控制泵送出速度。

7. 发明公开

EP0906993A3 Auto-acceleration system for prime mover of hydraulic construction machine and control system for prime mover and hydrolic pump 有权
标题翻译：液压建筑机械原动机自动加速系统和原动机和液压泵控制系统
公开(公告)号：EP0906993A3
公开(公告)日：1999-10-20
申请号：EP98118583.8
申请日：1998-10-01
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Nakamura, Kazunori , Takahashi, Ei , Toyooka, Tsukasa , Ishikawa, Kouji , Nakamura, Tsuyoshi , Kowatari, Yoichi , Shimamura, Tadatoshi , Sugiyama, Genroku , Hirata, Toichi
IPC分类号： E02F9/22
CPC分类号： E02F9/2296 , E02F9/2235 , E02F9/2246 , E02F9/2282 , E02F9/2285 , E02F9/2292
摘要： In the arm-crowding or track operation, a calculating portion (700d2 or 700d4) calculates a modification gain (KAC or KTR) depending on an operation pilot pressure and a calculating portion (700g) calculates a decrease modification (DND) based on the KAC or KTR, while a calculating portion (700m or 700p) calculates a modification gain (KACH or KTRH) depending on an operation pilot pressure and calculating portions (700q - 700s) calculate an increase modification (DNH) based on the KACH or KTRH. A reference target engine revolution speed NR0 is modified using the DND and DNH. In other operations than the arm-crowding and track operations, NR0 is modified using only the decrease modification (DND) calculated from the modification gain just depending on the operation pilot pressure. In the operation where an engine revolution speed is desired to become higher as an actuator load increases, the engine revolution speed can be controlled in accordance with change of the actuator load as well. In other operations, the engine revolution speed can be controlled just depending on the direction and input amount in and by which corresponding operation instructing means is operated.
摘要翻译：在臂拥挤或轨道运行中，计算部分（700d2或700d4）根据操作先导压力计算修正增益（KAC或KTR），并且计算部分（700g）基于KAC计算减小修正（DND）或KTR，而计算部分（700m或700p）根据操作先导压力计算修正增益（KACH或KTRH），并且计算部分（700q-700s）基于KACH或KTRH计算增加修改（DNH）。使用DND和DNH修改参考目标发动机转速NR0。除了斗杆拥挤和轨道运行以外的其他操作中，仅根据操作先导压力，仅使用根据修正增益计算的减少修正值（DND）修改NR0。在期望发动机转速随着致动器负载增加而变高的操作中，也可以根据致动器负载的变化来控制发动机转速。在其他操作中，发动机转速可以仅根据操作相应操作指令装置的方向和输入量来控制。

8. 发明公开

EP0922813A2 hydraulic drive system for hydraulic work vehicle 审中-公开
标题翻译：液压系统液压系统Arbeitsfahrzeug
公开(公告)号：EP0922813A2
公开(公告)日：1999-06-16
申请号：EP98204096.6
申请日：1998-12-03
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Ishikawa, Kouji , Hirata, Toichi , Sugiyama, Genroku , Toyooka, Tsukasa , Nakamura, Tsuyoshi, c/o Tsukuba-ryo , Gotou, Yasuharu
IPC分类号： E02F9/22
CPC分类号： E02F9/2296 , B60W2710/0644 , E02F9/2235 , E02F9/2246 , E02F9/26
摘要： A hydraulic drive system is provided with a signal guide system for guiding a delivery pressure of a pump (21) as a command pressure via a line (28) and a port (29), another signal guide system for guiding a pilot pressure of a pilot pump (22) as another command pressure via a line (30) and a port (31), a tilting control unit (23) for controlling the displacement of the pump (21) by the command pressures guided to the ports (29,31), a controller (33) having a command current-setting unit (34) for setting a relationship between a target engine speed and a command current, a target engine speed-indicating unit (35) for an engine (20), and a solenoid-operated proportional valve (32) for allowing the pilot pressure of the line (30) to pass as is while no drive signal is outputted from the controller (33) but for being reduced in opening to change the pilot pressure to a smaller value when a drive signal is outputted from the controller (33).
摘要翻译：液压驱动系统设置有信号引导系统，用于经由管线（28）和端口（29）引导泵（21）的输送压力作为指令压力，另一个信号引导系统用于引导泵通过管线（30）和端口（31）作为另一指令压力的先导泵（22），用于通过引导到所述端口（29）的指令压力来控制泵（21）的位移的倾转控制单元（23） 31），具有用于设定目标发动机转速和指令电流之间的关系的指令电流设定单元（34）的控制器（33），用于发动机（20）的目标发动机转速指示单元（35），以及用于允许管线（30）的先导压力在没有从控制器（33）输出驱动信号的同时通过的电磁比例阀（32），但是为了将先导压力改变到更小的开度当从控制器（33）输出驱动信号时的值。

9. 发明公开

EP2503064A3 Hybrid construction machine 审中-公开
标题翻译：混合建筑机器
公开(公告)号：EP2503064A3
公开(公告)日：2017-08-02
申请号：EP12160621.4
申请日：2012-03-21
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Ooki, Takatoshi , Kajita, Yusuke , Satake, Hidetoshi , Ishida, Seiji , Izumi, Shiho , Ishikawa, Kouji , Okumura, Shinya , Edamura, Manabu
IPC分类号： E02F9/12 , E02F9/22 , E02F9/20
CPC分类号： E02F9/123 , E02F9/2095 , E02F9/2217 , E02F9/2296
摘要： Provided is a hybrid construction machine (driving the upper swing structure (20) using a hydraulic motor (27) and an electric motor (25) together) capable of regenerating the energy of the upper swing structure (20) in deceleration or stopping into electric power and using the regenerated electric power for assisting the hydraulic motor (27) for driving the upper swing structure (20), while also being capable of securing a satisfactory operational feeling equivalent to that in construction machines driving the upper swing structure (20) with the hydraulic motor (27) alone. Opening area characteristics of a meter-out restrictor (37MOa; 37MOc) and a bleed-off restrictor (37BO) of a swing directional control valve (37) are set so that their opening areas become larger than prescribed opening areas that are set to the construction machines driving the upper swing structure (20) with the hydraulic motor (37) alone. Torque of the electric motor (25) is controlled so that the total sum of actual torque (braking torque or acceleration torque) occurring in the hydraulic motor (27) and torque (braking torque or acceleration torque) of the electric motor (25) in deceleration or acceleration of the hydraulic motor (27) equals torque (braking torque or acceleration torque) occurring when the opening area of the meter-out restrictor (37MOa, 37MOc) or the bleed-off restrictor (37BO) is set at the prescribed opening area.
摘要翻译：本发明提供一种混合动力建筑机械（使用液压马达（27）和电动机（25）一起驱动上部回转体（20）），该回转体能够将上部回转体（20）的能量减速或停止为电动（20）驱动的液压电动机（27）的辅助动力，并且能够确保与在驱动上部回转体（20）的工程机械中相同的良好的操作感的同时，仅液压马达（27）。摆动方向控制阀（37）的出口节流限流器（37MOa; 37MOc）和泄放限流器（37BO）的开口面积特性设定为其开口面积大于规定的开口面积只用液压马达（37）驱动上部回转结构（20）的建筑机械。控制电动机（25）的转矩，使得在液压马达（27）中出现的实际转矩（制动转矩或加速转矩）和电动机（25）的转矩（制动转矩或加速转矩）的总和液压马达27的减速或加速度等于出口节流限流器37MOc或泄放限流器37BO的开口面积设定在规定开度时产生的转矩（制动转矩或加速转矩）区。

10. 发明授权

EP2187012B1 Exhaust gas purification system for engineering machine 有权
标题翻译：施工排放控制系统
公开(公告)号：EP2187012B1
公开(公告)日：2016-09-07
申请号：EP09014009.6
申请日：2009-11-09
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： Tsukada, Hidenobu , Ishikawa, Kouji , Arai, Yasushi , Kamiya, Shohei
IPC分类号： F01N9/00 , F01N3/025
CPC分类号： E02F9/0866 , E02F9/00 , F01N9/002 , Y02T10/47

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