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1. 发明公开

EP3951074A1 WORK MACHINE 审中-公开
公开(公告)号：EP3951074A1
公开(公告)日：2022-02-09
申请号：EP20777156.9
申请日：2020-03-17
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： MEGURIYA, Shuuichi , IZUMI, Shiho
IPC分类号： E02F3/43 , E02F9/20 , E02F9/26
摘要： A controller 20 mounted on a hydraulic excavator 1 that is able to perform machine control transmits work situation parameters (machine body position, hydraulic working fluid temperature, bucket weight, and target surface gradient) to a management server 71, receives, from the management server, control command correction values that are calculated by the management server on the basis of the work situation parameters and that represent correction values for correcting control commands, and controls hydraulic actuators 5, 6, and 7 with corrected control commands that represent the control commands corrected on the basis of the control command correction values.

2. 发明公开

EP3943668A1 WORK MACHINE 审中-公开
公开(公告)号：EP3943668A1
公开(公告)日：2022-01-26
申请号：EP20776723.7
申请日：2020-02-12
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： KANAZAWA, Akira , MORIKI, Hidekazu , IMURA, Shinya , IZUMI, Shiho , CHIBA, Takaaki
IPC分类号： E02F3/43
摘要： To provide a work machine that enables enhancement of shaping accuracy near a boundary line between two adjacent target surfaces. A controller 10 extracts, from among a plurality of target surfaces, a second target surface S2 that is a target surface adjacent to a first target surface S1, calculates a boundary line L2 between the first target surface S1 and the second target surface S2, and, prior to a work tool 6 passing the first boundary line L2, corrects a control signal for a posture control actuator 6c such that the angular difference E L between a reference line L1 set on the work tool 6 and the boundary line L2 becomes small.

3. 发明公开

EP3767042A1 CONSTRUCTION MACHINE 有权
公开(公告)号：EP3767042A1
公开(公告)日：2021-01-20
申请号：EP18910095.1
申请日：2018-12-17
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HIROMATSU, Kohei , IZUMI, Shiho , SAKAI, Daito
IPC分类号： E02F9/26
摘要： A construction machine that can display various work devices including a bucket on a display device without causing a sense of discomfort is provided. A display controller is configured to deform a first drawing figure to create a first post-deformation drawing figure such that a triangle having vertexes at a first coupling point, a second coupling point and a first monitor point in the first drawing figure becomes congruent with a triangle having vertexes at the first coupling point, the second coupling point and the first monitor point in a coordinate system on an image on a display device, and arrange the first post-deformation drawing figure on a screen of the display device such that positions of the first coupling point, the second coupling point and the first monitor point in the first post-deformation drawing figure are arranged correspondingly to positions of the first coupling point, the second coupling point and the first monitor point, respectively, in the coordinate system on the image.

4. 发明授权

EP2918733B1 CONSTRUCTION MACHINE 有权转让
公开(公告)号：EP2918733B1
公开(公告)日：2017-10-04
申请号：EP13853460.7
申请日：2013-10-15
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NISHIKAWA, Shinji , SATAKE, Hidetoshi , IMURA, Shinya , IZUMI, Shiho , ISHIKAWA, Kouji
IPC分类号： E02F9/20 , F15B11/02 , F15B11/028 , F16H61/4078 , E02F9/12 , E02F9/22 , F15B15/20
CPC分类号： F15B11/04 , E02F9/123 , E02F9/20 , E02F9/2095 , E02F9/22 , E02F9/2203 , E02F9/2217 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B11/162 , F15B11/165 , F15B13/06 , F15B13/14 , F15B2015/206 , F15B2211/205 , F15B2211/20515 , F15B2211/7058 , F15B2211/7135 , F15B2211/75 , F15B2211/781
摘要： A construction machine includes: a swing structure (50); a hydraulic pump (1); a hydraulic motor (3) for driving the swing structure (50) using hydraulic fluid from the hydraulic pump (1); an electric motor (14) for driving the swing structure (50) with or without the aid of the hydraulic motor (3); and a hydraulic actuator (16) driven by the hydraulic fluid from the hydraulic pump 1, the hydraulic actuator can be operated together with the swing structure (50). When the swing structure (50) is operated together with the hydraulic actuator (16), only the electric motor (14) is used to swing the swing structure (50).

5. 发明公开

EP2952638A2 HYBRID CONSTRUCTION MACHINE 有权
标题翻译：混合式建筑机械
公开(公告)号：EP2952638A2
公开(公告)日：2015-12-09
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
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).
摘要翻译：本发明的目的在于提供一种混合动力建筑机械，该混合动力建筑机械具有作为旋转体（50）的驱动源的液压马达（3）和电动机（14），该混合动力建筑机械构成为向操作者提供高在联合摆动操作期间的可操作性。本发明提供一种混合动力工程机械，其包括：旋转体（50），液压泵（1），利用来自液压泵（1）的工作油来驱动旋转体（50）的液压旋转马达（3）与液压回转马达（3）一起驱动回转体（50）的马达（14），与回转体（50）同时动作并由来自液压泵的液压流体驱动的动臂液压缸（16） 1）;第一方向控制阀（28），其控制从所述液压泵（1）供给到所述液压回转马达（3）的所述液压流体的流动;第二方向控制阀（29），其控制所述液压回流（3）和控制器（13）以及当悬臂缸（16）与摆动结构（50）同时工作时防止第二方向控制阀（29）工作的电磁减压阀。

6. 发明公开

EP3981923A1 CONSTRUCTION MACHINE 有权
公开(公告)号：EP3981923A1
公开(公告)日：2022-04-13
申请号：EP20818965.4
申请日：2020-05-28
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： ISHIHARA, Shinji , IZUMI, Shiho , KOTAKE, Shinichi
IPC分类号： E02F9/20 , G01S19/43 , G01S19/47 , G01S19/54
摘要： To enable calculation of an accurate azimuth by using a GNSS regardless of postural changes in a construction machine such as raising and lowering of a front work implement. For this object, in a controller 20, a position/posture computing section 20a determines that an azimuth of an upper swing structure 2 calculated at a GNSS receiver 17c is of low quality when at least one of a posture angle of the upper swing structure 2 acquired at a machine-body IMU 13 and a posture angle of a front work implement 1 acquired at a boom IMU 14 is equal to or larger than a threshold value, executes a bias removal computation on the basis of the quality of the azimuth and the azimuth of the upper swing structure 2 calculated at the GNSS receiver 17c, calculates a corrected azimuth of the upper swing structure 2 on the basis of the azimuth of the upper swing structure 2 calculated at the GNSS receiver 17c, and an angular velocity of the upper swing structure 2 from which a gyro bias has been removed, and computes a three-dimensional position and posture of the front work implement 1 by using the corrected azimuth.

7. 发明公开

EP3730699A1 WORK MACHINE 有权
公开(公告)号：EP3730699A1
公开(公告)日：2020-10-28
申请号：EP18891901.3
申请日：2018-12-20
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： IGARASHI, Teruki , IZUMI, Shiho
IPC分类号： E02F3/43 , E02F9/20 , E02F9/26
摘要： A hydraulic excavator includes a controller having an actuator control section that executes machine control of operating a work implement in accordance with a predetermined condition in a case in which a work implement is positioned in a deceleration area, and that does not execute machine control in a case in which the work implement is positioned in a non-deceleration area. The controller further includes an operation deciding section that decides operation of the work implement on the basis of an operation amount of an operation device, and a display control section that displays, on a display device, a positional relationship among the work implement, a target surface and a boundary line between the deceleration area and the non-deceleration area. The actuator control section executes machine control while changing the position of the boundary line depending on a result of the decision by the operation deciding section, and the display control section changes the display position of the boundary line on the display device, depending on the result of the decision by the operation deciding section.

8. 发明授权

EP3361007B1 CONSTRUCTION MACHINERY 有权
公开(公告)号：EP3361007B1
公开(公告)日：2020-05-27
申请号：EP16853639.9
申请日：2016-10-05
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： NARIKAWA, Ryu , MORIKI, Hidekazu , TSURUGA, Yasutaka , SAKAMOTO, Hiroshi , IZUMI, Shiho
IPC分类号： E02F3/43 , E02F9/20 , E02F9/22 , F02D29/00 , F02D29/04 , E02F9/26 , E02F3/32

9. 发明公开

EP3040483A1 WORKING MACHINE 有权转让
标题翻译：工作机器
公开(公告)号：EP3040483A1
公开(公告)日：2016-07-06
申请号：EP14840726.5
申请日：2014-08-28
申请人： Hitachi Construction Machinery Co., Ltd
发明人： IMURA, Shinya , ISHIKAWA, Kouji , NISHIKAWA, Shinji , KANETA, Tomoaki , IZUMI, Shiho
IPC分类号： E02F9/20
摘要： Provided is a work machine using a hydraulic motor and an electric motor to drive a swing structure, the work machine being adapted to reduce fuel consumption in regions where swinging by the hydraulic motor is prone to deteriorate in efficiency, such as when an operating stroke of swinging is small.
The work machine includes an engine, a hydraulic pump driven by the engine, a swing structure, an electric motor for driving the swing structure, a hydraulic motor for driving the swing structure, the hydraulic motor being driven by the hydraulic pump, and a swing control lever device that commands the swing structure to be driven. The work machine further includes a control device operates in either an electric swing mode in which the swing structure is driven mainly by torque of the electric motor or a hydraulic swing mode in which the swing structure is driven mainly by torque of the hydraulic motor, depending on an operating stroke of the control lever device and/or a swing speed of the swing structure.
摘要翻译：本发明提供一种作业机械，该作业机械使用液压马达和电动马达来驱动旋转体，该作业机械在由液压马达进行的摆动的效率容易恶化的区域，摆动很小。作业机械包括发动机，由发动机驱动的液压泵，旋转体，用于驱动旋转体的电动机，用于驱动旋转体的液压马达，由液压泵驱动的液压马达，控制杆装置，其命令摆动结构被驱动。作业机械还具有控制装置，该控制装置以主要通过电动机的转矩驱动旋转体的电动旋转模式或主要通过液压电动机的转矩驱动旋转体的液压旋转模式控制杆装置的操作行程和/或摆动结构的摆动速度。

10. 发明公开

EP2952638A3 HYBRID CONSTRUCTION MACHINE 有权
公开(公告)号：EP2952638A3
公开(公告)日：2016-03-02
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).

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