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公开(公告)号：EP4397816A1
公开(公告)日：2024-07-10
申请号：EP22880734.3
申请日：2022-09-21
IPC分类号： E02F9/26
CPC分类号： E02F9/26
摘要： A bucket information acquisition device (5) for acquiring information regarding the shape of a bucket that rotates about a rotational center axis along a predetermined moving plane in a construction machine includes: a distance distribution acquisition unit (63) that acquires the three-dimensional distance distribution of the bucket with respect to a reference point; a reference cross section extraction unit (502) that extracts, from the distance distribution acquired by the distance distribution acquisition unit, a reference cross section which is a cross section of the bucket obtained by cutting the bucket along a plane parallel to the moving plane; an approximate line identification unit (503) that identifies, based on the reference cross section, an approximate line approximating the reference cross section composed of a straight line and a curve; and a bucket shape calculation unit (504) that calculates bucket shape information regarding the shape of the bucket based on the approximate line.
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公开(公告)号：EP4339380A1
公开(公告)日：2024-03-20
申请号：EP22832581.7
申请日：2022-04-21
摘要： Provided is a construction machine that is capable of preventing degradation in efficiency of excavation work while preventing an increase in excavation resistance in the excavation work. A controller (50) of a construction machine (10) determines an accommodation state of earth and sand accommodated in a bucket (6), and outputs a resistance reduction command signal that is a command signal for operating a work device (3) such that the bucket (6) is displaced in a resistance reduction direction (D2, D3, D4) that is a direction where excavation resistance acting on the bucket (6) is capable of being reduced, in accordance with a result of determining the accommodation state.
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公开(公告)号：EP4332309A1
公开(公告)日：2024-03-06
申请号：EP22828309.9
申请日：2022-06-15
IPC分类号： E02F9/26
摘要： The present invention acquires soil quality information of the ground while excavation work is performed at a work site. A hydraulic excavator (1) includes a work attachment (20), a drive unit (71), a load cell (61), a machine load calculator (503), a soil pressure load calculator (504), and a soil quality estimator (505). The machine load calculator (503) calculates, from orientation information of the work attachment (20) and information about a load that the drive unit (71) receives, a machine load, which is a load that a bucket (23) receives from earth and sand. The soil pressure load calculator (504) calculates, from a shape of a soil mass, the orientation information, the shape of the bucket (23), the density of the soil, a wall surface frictional angle, a soil pressure load.
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公开(公告)号：EP4310256A1
公开(公告)日：2024-01-24
申请号：EP22815585.9
申请日：2022-02-24
发明人： OKIMOTO, Sho , SHIMAZU, Yasuhiko , YAMASHITA, Koji
摘要： Provided are a soil quality information acquisition system that enables acquisition of soil quality information at an appropriate time on a worksite, and a working machine including the system. The soil quality information acquisition system (100) includes a body position detection part (33), an acquisition time determination part (503), a soil quality information acquisition part (502), and a storage part (506). The body position detection part (33) acquires position information about a hydraulic excavator (1) on the worksite. The acquisition time determination part (503) determines an acquisition time on the basis of soil quality relevant information being information related a change in a quality on the worksite. The soil quality information acquisition part (502) receives an acquisition signal output from the acquisition time determination part (503), and acquires the soil quality information in response to the acquisition signal. The storage part (506) stores the position information and the soil quality information in association with each other.
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公开(公告)号：EP4328172A1
公开(公告)日：2024-02-28
申请号：EP22819865.1
申请日：2022-03-15
发明人： OKIMOTO, Sho , MAEDO, Teppei , SHIMAZU, Yasuhiko
摘要： In a lower travelling body (101) of the mobile crane (100), each of a right front coupling member (11R) and a right rear coupling member (12R) is configured to change a relative position to one or both of a right crawler frame (2R) and a car body (10) in order to reduce dimensions of the lower travelling body (101) when it is transported. Each of a left front coupling member (11L) and a left rear coupling member (12L) is configured to change a relative position to one or both of a left crawler frame (2L) and the car body (10) in order to reduce dimensions of the lower travelling body (101) when it is transported.
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公开(公告)号：EP4331955A1
公开(公告)日：2024-03-06
申请号：EP22819862.8
申请日：2022-03-15
发明人： MAEDO, Teppei , OKIMOTO, Sho , SHIMAZU, Yasuhiko , TAKAMATSU, Nobuhiro , MATSUI, Dairo , KOYAHATA, Akira
摘要： A coupling portion of a lower travelling body (101) of a mobile crane (100) is configured such that, in plan view, a right front straight line (LA), which passes through any point included in a front load receiving surface and through any point included in a right front load transmission surface, passes through a right front end roller (261) or a point on the front side relative to the right front end roller (261) and that a left front straight line (LC), which passes through any point included in the front load receiving surface and through any point included in a left front load transmission surface, passes through a left front end roller (261) or a point on the front side relative to the left front end roller (261).
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