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1. 发明公开

EP4257754A1 WORK MACHINERY 审中-实审
公开(公告)号：EP4257754A1
公开(公告)日：2023-10-11
申请号：EP21903112.7
申请日：2021-11-12
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NAKAMURA, Satoshi , SHIWAKU, Kouji , IMURA, Shinya
IPC分类号： E02F3/43 , E02F9/20
摘要： A working status indicating a status related to the present work of a hydraulic excavator 1 is determined on the basis of operation signals output from a control lever 24, posture information output from inertial measuring devices 27 to 30, load information output from pressure sensors 32 and 33, and a work area set by a display input device 26, an operation form indicating contents of an operation in operation correction control of a front work implement 12 is decided from a plurality of operation forms set in advance, according to the determined working status, and the operation correction control is performed such that the front work implement moves according to the operation form. Thus, an appropriate assisting operation can be performed in machine control, so that the work accuracy can be improved.

2. 发明公开

EP4187477A1 SYSTEM FOR DETERMINING CHANGE TO WORK CONTENT AND FUNCTION CONTENT 审中-实审
公开(公告)号：EP4187477A1
公开(公告)日：2023-05-31
申请号：EP21906304.7
申请日：2021-11-26
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： SAITO, Yuho , MORIKI, Hidekazu , IMURA, Shinya
IPC分类号： G06Q50/08
摘要： Provided is a work and function content change determination system that leaves a responsible person to make a determination whether or not to change work content and function content in a timely manner. A work and function content change determination system 35 is configured to determine whether or not to change work content and function content at a civil engineering and construction site, and includes a determination device 34 that is communicable with a first terminal 47 and a second terminal 33. When receiving information on an application for change of the work content and function content from the first terminal 47, the determination device 34 transmits, to the second terminal 33 of the authorized person having authority to approve the application for change, information on the application content for change and authority information on the authorized person identified. When receiving information on the determination result by the authorized person of permitting the application for change from the second terminal 33 that the identified authorized person has, the determination device 34 changes the work content and the function content based on the application content.

3. 发明公开

EP3608548A1 CONSTRUCTION MACHINE 有权
公开(公告)号：EP3608548A1
公开(公告)日：2020-02-12
申请号：EP18907473.5
申请日：2018-03-19
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： YAMASHITA, Ryohei , MORI, Kazushige , IMURA, Shinya
IPC分类号： F15B11/02 , E02F9/22 , F15B11/08 , F15B11/16
摘要： To provide a construction machine that can improve the energy efficiency in a leveling operation in which an arm crowding operation and a boom raising operation are performed simultaneously.
A controller (30) controls a first regulator (60a) according to the maximum value among target displacement volume (Qa1) of a first hydraulic pump (1) that is based on a boom raising operation amount (Pi1), and target displacement volume (Qa2) of the first hydraulic pump (1) that is based on an arm crowding operation amount (Pi2) of an arm operation device (18) if the boom raising operation amount (Pi1) of a boom operation device (17) is smaller than a predetermined operation amount, or if a delivery pressure (P2) of a second hydraulic pump (2) is equal to or higher than a predetermined pressure, and controls the first regulator (60a) according only to the target displacement volume (Qa1) of the first hydraulic pump (1) that is based on the boom raising operation amount (Pi1) if the boom raising operation amount (Pi1) is equal to or larger than the predetermined operation amount, and the delivery pressure (P2) of the second hydraulic pump (2) is lower than the predetermined pressure.

4. 发明公开

EP3517789A1 HYDRAULIC ENERGY RECOVERY DEVICE FOR WORK MACHINE 有权
公开(公告)号：EP3517789A1
公开(公告)日：2019-07-31
申请号：EP16913636.3
申请日：2016-09-23
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HIJIKATA, Seiji , ISHIKAWA, Kouji , IMURA, Shinya
IPC分类号： F15B21/14 , E02F9/22 , F15B11/00 , F15B11/024
摘要： A hydraulic energy regeneration system for a work machine for boosting a pressure of a return hydraulic fluid of a hydraulic cylinder and regenerating the hydraulic fluid, prevents a bottom pressure from reaching an overload relief set pressure and suppresses a changeover shock to ensure favorable operability.
The hydraulic energy regeneration system for the work machine, includes: a communication pressure boost passage that can boost a pressure of a discharge-side hydraulic fluid by communicating a discharge side and a suction side of the hydraulic cylinder with each other during an own weight fall of a driven body; a communication pressure boost valve that is disposed in the communication pressure boost passage and that can regulate one of or both of a pressure and a flow rate of the communication pressure boost passage; a reuse-side line and a reuse control valve or a regeneration-side line and a regeneration control valve that can regenerate a hydraulic fluid discharged from the hydraulic cylinder during the own weight fall of the driven body; and a controller. The controller is configured to reduce an opening degree of the communication pressure boost valve in response to an increase of the discharge-side pressure of the hydraulic cylinder right after the discharge-side pressure reaches a preset high load set pressure, and gradually reduces the opening degree of the communication pressure boost valve with passage of time.

5. 发明授权

EP3037589B1 CONSTRUCTION MACHINE 有权
公开(公告)号：EP3037589B1
公开(公告)日：2019-03-20
申请号：EP14837337.6
申请日：2014-08-20
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： IZUMI, Shiho , IMURA, Shinya , ISHIKAWA, Kouji , KANETA, Tomoaki , AMANO, Hiroaki , NISHIKAWA, Shinji
IPC分类号： E02F9/20 , H02P27/06 , E02F9/12 , E02F9/22 , B60L1/00 , H02P6/08 , F04B49/00

6. 发明授权

EP2952638B1 HYBRID CONSTRUCTION MACHINE WITH SWINGABLE SUPERSTRUCTURE 有权
公开(公告)号：EP2952638B1
公开(公告)日：2018-10-24
申请号：EP15170506.8
申请日：2015-06-03
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NISHIKAWA, Shinji , ISHIKAWA, Kouji , SATAKE, Hidetoshi , IMURA, Shinya , IZUMI, Shiho
IPC分类号： E02F9/12 , E02F9/20 , E02F9/22 , F15B11/08 , F15B11/042
CPC分类号： F15B11/042 , E02F9/123 , E02F9/2095 , E02F9/2203 , E02F9/2228 , E02F9/2282 , E02F9/2296 , F15B11/08 , F15B2211/20515 , F15B2211/30525 , F15B2211/3059 , F15B2211/6306 , F15B2211/6346 , F15B2211/6355 , F15B2211/6654 , F15B2211/7058 , F15B2211/7135 , F15B2211/75
摘要： An object of the present invention is to provide a hybrid construction machine having a hydraulic motor (3) and an electric motor (14) as driving sources for a swing structure (50), the hybrid construction machine being configured to provide the operator with high manipulability during combined swing operation. This invention provides a hybrid construction machine including a swing structure (50), a hydraulic pump (1), a hydraulic swing motor (3) driving the swing structure (50) using hydraulic fluid from the hydraulic pump (1), an electric swing motor (14) driving the swing structure (50) in conjunction with the hydraulic swing motor (3), a boom cylinder (16) operated simultaneously with the swing structure (50) at times and driven by the hydraulic fluid from the hydraulic pump (1), a first directional control valve (28) controlling flow of the hydraulic fluid supplied from the hydraulic pump (1) to the hydraulic swing motor (3), a second directional control valve (29) controlling the flow of the hydraulic fluid returning from the hydraulic swing motor (3), and a controller (13) and solenoid pressure reducing valves which prevent operation of the second directional control valve (29) when the boom cylinder (16) is operated simultaneously with the swing structure (50).

7. 发明公开

EP3306112A1 CONSTRUCTION-MACHINE HYDRAULIC CONTROL DEVICE 有权
标题翻译：施工机械液压控制装置
公开(公告)号：EP3306112A1
公开(公告)日：2018-04-11
申请号：EP16803218.3
申请日：2016-05-26
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： YAMASHITA, Ryohei , IMURA, Shinya , ISHIKAWA, Kouji , MORIKI, Hidekazu , AMANO, Hiroaki
IPC分类号： F15B20/00 , E02F9/22 , F15B11/04 , F15B11/08
CPC分类号： E02F9/2228 , E02F9/2235 , E02F9/2296 , E02F9/268 , F15B11/04 , F15B11/044 , F15B11/10 , F15B20/00 , F15B2211/30565 , F15B2211/31558 , F15B2211/329 , F15B2211/353 , F15B2211/355 , F15B2211/40515 , F15B2211/41581 , F15B2211/426 , F15B2211/6313 , F15B2211/6316 , F15B2211/6355 , F15B2211/665 , F15B2211/6654 , F15B2211/761 , F15B2211/862
摘要： Disclosed is a hydraulic control system of a construction machine capable of achieving a reduction in meter-out pressure loss in accordance with variation of a negative load acting on a hydraulic actuator and capable of preventing deterioration in operability even when an abnormal condition arises in a pressure sensor detecting the magnitude of a negative load. There are provided meter-out flow lines through which a hydraulic fluid discharged from a hydraulic actuator flows; variable restrictors provided in the meter-out flow lines; a load sensor detecting the magnitude of a negative load which is a load applied to the hydraulic actuator by an external force and which is a load in the same direction as the operating direction of the hydraulic actuator; and a control device which, when the load abnormality sensor does not detect any abnormality in the load sensor, reduces the sum total of the opening areas of the variable restrictors in accordance with an increase in the magnitude of the negative load detected by the load sensor and the operation amount detected by the operation amount sensor and which, when the load abnormality sensor detects abnormality in the load sensor, reduces the sum total of the opening areas of the variable restrictors to a predetermined value in accordance with the operation amount detected by the operation amount sensor.
摘要翻译：本发明提供一种建筑机械的液压控制装置，其能够根据作用于液压执行机构的负载的变动来实现出口节流用压力损失的降低，即使在压力产生异常的情况下也能够防止操作性的降低传感器检测负载的大小。设有流出液压流体的液压流体的流出流路，设置在出口流量管线中的可变节流器; 负载传感器，其检测负载的大小，所述负负载是通过外力施加至所述液压致动器的负载，并且所述负载是与所述液压致动器的操作方向相同的方向上的负载; 以及控制装置，当所述负载异常传感器未检测到所述负载传感器中的任何异常时，根据由所述负载传感器检测到的所述负载的大小的增加来减小所述可变节流器的开口面积的总和以及由所述操作量传感器检测到的操作量，并且当所述负载异常传感器检测到所述负载传感器中的异常时，根据由所述操作量检测器检测到的操作量，将所述可变限制器的开口面积的总和减小到预定值操作量传感器。

8. 发明公开

EP3249116A1 HYBRID CONSTRUCTION MACHINE 有权转让
标题翻译：混合式建筑机械
公开(公告)号：EP3249116A1
公开(公告)日：2017-11-29
申请号：EP16740154.6
申请日：2016-01-19
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HITA, Masafumi , IMURA, Shinya , IZUMI, Shiho , MORIKI, Hidekazu , AMANO, Hiroaki
IPC分类号： E02F9/20 , F15B11/00
摘要： A motor-generator (27) is connected mechanically to an engine (21) and a hydraulic pump (23). The hydraulic pump (23) delivers pressurized oil to cylinders (12D) to (12F) in a working mechanism (12), a traveling hydraulic motor (25) and a revolving hydraulic motor (26). The revolving hydraulic motor (26) drives a revolving device (3) in cooperation with a revolving electric motor (33). An HCU (36) reduces outputs of the revolving electric motor (33), the revolving hydraulic motor (26), the boom cylinder (12D) and the like such that a ratio of a revolving speed of an upper revolving structure (4) and a movement speed of raising a boom (12A) is held to a ratio in a normal mode (NMODE) at the time of performing a compound movement of a revolving movement and a boom-raising movement in a low speed mode (LSMODE).
摘要翻译：电动发电机（27）机械连接到发动机（21）和液压泵（23）。液压泵23将工作机构12，行驶用液压马达25以及旋转液压马达26中的气缸12D〜12F输送加压油。旋转液压马达（26）与旋转电动机（33）协同驱动旋转装置（3）。 HCU（36）减小回转电动机（33），回转液压马达（26），动臂油缸（12D）等的输出，使得上部回转体（4）的回转速度与在执行低速模式（LSMODE）中的旋转运动和悬臂升起运动的复合运动时，使起重臂（12A）上升的运动速度保持在正常模式（NMODE）下的比率。

9. 发明公开

EP3115249A1 CONTROL DEVICE FOR THE BATTERY OF A HYBRID CONSTRUCTION MACHINE 有权
标题翻译： STEUERUNGSVORRICHTUNGFÜRDIE BATTERIE EINER HYBRIDEN BAUMASCHINE
公开(公告)号：EP3115249A1
公开(公告)日：2017-01-11
申请号：EP16157571.7
申请日：2016-02-26
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： ISHIDA, Seiji , IMURA, Shinya , HITA, Masafumi
IPC分类号： B60L11/02 , B60L11/12 , B60L11/18 , B60L1/00 , E02F9/20
CPC分类号： E02F9/2091 , B60K6/485 , B60K35/00 , B60K2350/352 , B60L1/003 , B60L11/02 , B60L11/123 , B60L11/1857 , B60L11/1861 , B60L11/1872 , B60L2200/40 , B60L2240/545 , B60L2240/549 , B60Y2200/412 , B60Y2300/91 , E02F3/32 , E02F9/2075 , G05B15/02 , H02J7/0047 , H02J7/007 , H02J2007/005 , Y02T10/6217 , Y02T10/7005 , Y02T10/7044 , Y02T10/705 , Y02T10/7077 , Y10S903/903
摘要： A control device of construction machine that performs tasks by driving a hydraulic pump 103 by means of an electric motor 102 that is driven by electric power of a battery device 111 that is capable to charge and discharge and an engine 101 that is mechanically coupled to the electric motor 102, includes: a charging/discharging control unit that controls the charging/discharging of the battery device 111 in such a manner that, in case that a heavy load task where an output of the hydraulic pump 103 is large and a light load task where the output of the hydraulic pump 103 is small are alternately performed, when the output of the hydraulic pump 103 during the heavy load task is increased or a time proportion of the heavy load task in the unit period is increased, an average value of charging current of the battery device 111 per the unit period increases, and when the output of the hydraulic pump 103 during the heavy load task is further increased or the time proportion of the heavy load task in the unit period is further increased, then the average value of the charging current of the battery device 111 per the unit period decreases.
摘要翻译：一种施工机械的控制装置，其通过由能够进行充放电的电池装置111的电力驱动的电动机102驱动液压泵103，以及机械地联接电动机102包括：充电/放电控制单元，其以这样的方式控制电池装置111的充电/放电，即，在液压泵103的输出大的负载任务和轻负载交替地执行液压泵103的输出小的任务，当在重载任务期间液压泵103的输出增加或单位时段内的重载任务的时间比例增加时，平均值在单位期间电池装置111的充电电流增加，并且当在重载任务期间液压泵103的输出进一步增加或重物的时间比例单位期间的广告任务进一步增加，则每单位期间电池装置111的充电电流的平均值减少。

10. 发明公开

EP3059351A1 HYBRID-TYPE CONSTRUCTION MACHINE 有权
标题翻译：施工机械与混合型
公开(公告)号：EP3059351A1
公开(公告)日：2016-08-24
申请号：EP14853993.5
申请日：2014-09-18
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： AMANO, Hiroaki , ISHIKAWA, Kouji , SATAKE, Hidetoshi , IMURA, Shinya , NISHIKAWA, Shinji , KANETA, Tomoaki , IZUMI, Shiho
IPC分类号： E02F9/20
CPC分类号： E02F9/123 , B60Y2200/416 , E02F3/32 , E02F9/20 , E02F9/2004 , E02F9/2095 , E02F9/2246
摘要： Provided is a hybrid-type construction machine including a swing device of the hydraulic-electric combined swing type and by which, in a work for which accurate swing operability is demanded like, for example, a crane work, a swing body is driven alone by the electric motor.
The hybrid-type construction machine includes an engine, a hydraulic pump driven by the engine, a swing body, an electric motor for driving the swing body, and a hydraulic motor driven by the hydraulic pump for driving the swing body. The swing body is swung by simultaneous drive by the electric motor and the hydraulic motor. The hybrid-type construction machine includes a control apparatus having a work mode changeover unit by which an operator changes over a mode in response to an aspect of a work and an electric alone swing controlling unit configured to control the swing body to be swung by the electric motor alone. When a work in which position accuracy is demanded is selected by the work mode changeover unit, the swing body is swung by the electric alone swing controlling unit.

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