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1. 发明公开

EP4130393A1 WORK MACHINE 审中-实审
公开(公告)号：EP4130393A1
公开(公告)日：2023-02-08
申请号：EP21775640.2
申请日：2021-03-05
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： HAYAKAWA, Naoki , IZUMI, Shiho
IPC分类号： E02F3/43
摘要： A controller determines whether or not a work device is in a ground contact state, by using detection data of a pressure sensor and at least one balance relation between forces or moments acting on the work device, and generate partial shape data of a work object formed by the work device, on the basis of a movement locus of a monitoring point set to the work device and an external shape of the work device in a ground contact period in which the work device is determined to be in the ground contact state, and update the present-condition shape data of the work object on the basis of the partial shape data.

2. 发明公开

EP4047138A1 CONSTRUCTION ASSISTANCE SYSTEM AND WORK MACHINE 审中-实审
公开(公告)号：EP4047138A1
公开(公告)日：2022-08-24
申请号：EP20877404.2
申请日：2020-10-13
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： YAMADA, Hiroyuki , IMURA, Shinya , IZUMI, Shiho
IPC分类号： E02F3/43 , E02F9/24 , E02F9/26 , G08B21/24
摘要： A construction assisting system including a controller that performs construction assistance processing on the basis of positional relation between a worker and a hydraulic excavator, the construction assisting system including: an approach intention detecting device that detects an intention of the worker to approach the hydraulic excavator; an approach intention presenting device that presents a detection result of the approach intention detecting device to an operator of the hydraulic excavator; and an approach confirmation obtaining device that obtains a confirmation state of the operator of the hydraulic excavator for contents presented by the approach intention presenting device, the controller performing the construction assistance processing on the basis of position information of the worker when the operator of the hydraulic excavator denies the approach of the worker or when the operator of the hydraulic excavator does not confirm the intention of the worker to approach. It is thereby possible to perform construction assistance according to the intention of the worker, and further improve safety of the worker while suppressing a decrease in work efficiency.

3. 发明授权

EP3205862B1 WORK MACHINE 有权转让
公开(公告)号：EP3205862B1
公开(公告)日：2020-03-18
申请号：EP15848729.8
申请日：2015-10-02
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： TAKIGAWA, Yoshiyuki , OTA, Yasunori , IZUMI, Shiho , MORITA, Yuichiro , SHIBATA, Kouichi
IPC分类号： F02D29/02 , E02F9/20 , F02D29/00 , F02D29/04 , F02D29/06

4. 发明公开

EP3480371A1 WORK MACHINE 有权
公开(公告)号：EP3480371A1
公开(公告)日：2019-05-08
申请号：EP17819546.7
申请日：2017-02-28
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： IZUMI, Shiho , NARIKAWA, Ryuu , ISHIKAWA, Kouji , SAKAI, Daito , KUROSE, Takahiko
IPC分类号： E02F3/43 , E02F9/20 , E02F9/26
摘要： Provided is a work machine that is equipped with a control unit (9) that executes area limiting control with respect to a work device (1A). The control unit (9) includes: a position computing section (21) that calculates the position, on an operation plane, of the forward end (first reference point (P1)) of a bucket (1c) and the rear end (second reference point (Q1)) of the bucket (1c); and a first distance computing section (22) that calculates the distances (PC1, QC1) in the operating plane from the first reference point (P1) and the second reference point (Q1) to the target face A to be controlled. When the smaller one of the two distances (PC1, QC1) is equal to or lower than a threshold (T1) during area limiting control, the control unit (9) corrects an operation signal output from an operation lever device (4) so as to reduce the operating speed of a hydraulic actuator (3b) that is an control target of the operation signal.

5. 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.

6. 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.

7. 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.

8. 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).

9. 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。

10. 发明公开

EP3951069A1 WORK MACHINE 审中-公开
公开(公告)号：EP3951069A1
公开(公告)日：2022-02-09
申请号：EP19920989.1
申请日：2019-03-27
申请人： Hitachi Construction Machinery Co., Ltd.
发明人： TAKEUCHI, Hiroki , IZUMI, Shiho , NARIKAWA, Ryu , MEGURIYA, Shuuichi , IGARASHI, Teruki
IPC分类号： E02F3/43
摘要： There are provided an articulated-type front work implement having a boom, an arm, and a bucket that are driven members coupled to each other; a boom cylinder, an arm cylinder and a bucket cylinder that are hydraulic actuators each of which drives a corresponding one of the plurality of driven members on the basis of an operation signal; a plurality of operation members each outputting the operation signal to one of the hydraulic actuators, the one hydraulic actuator being intended by an operator; and a controller that outputs the operation signal to at least one of the plurality of hydraulic actuators or executes area limiting control of correcting the output operation signal such that the front work implement moves on a target surface preset for a work target of the front work implement or within an area above the target surface, and corrects the operation signal on the basis of information related to operation of the hydraulic actuator subjected to the area limiting control immediately before the area limiting control is performed. Thereby, the precision of excavation construction in machine control can be improved.

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