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公开(公告)号：US20240126301A1
公开(公告)日：2024-04-18
申请号：US18278644
申请日：2021-12-28
申请人： Komatsu Ltd.
IPC分类号： G05D1/646 , G05D1/248 , G05D1/69 , G05D107/70 , G05D109/10
CPC分类号： G05D1/646 , G05D1/248 , G05D1/69 , G05D2107/73 , G05D2109/10
摘要： An unmanned vehicle management system includes: a traveling area definition unit that defines a traveling area on a traveling path of a work site; and a determination unit that determines whether or not an unmanned vehicle can enter the traveling area on the basis of a vehicle width indicating the width of the unmanned vehicle and a track width indicating the width of the traveling area.
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公开(公告)号：US20190100101A1
公开(公告)日：2019-04-04
申请号：US15553684
申请日：2017-01-27
申请人： Komatsu Ltd.
发明人： Shinya Sano
CPC分类号： B60K17/16 , F16H57/0423 , F16H57/0424 , F16H57/0436 , F16H57/0441 , F16H57/0447 , F16H57/0471 , F16H57/0479 , F16H57/0483 , F16H57/0493
摘要： An axle apparatus includes: an axle housing in which a machine part is disposed, the axle housing including a discharge port that discharges oil supplied to the machine part and a plurality of inflow ports into which the oil flows; a filter disposed outside the axle housing; a discharge pipe connecting the discharge port of the axle housing and the filter; a supply pipe of which one end side is connected to the filter, the other end side of the supply pipe being branched off and connected to the plurality of inflow ports; and a pump that causes the oil to circulate from the axle housing to the filter via the discharge pipe, and causes the oil to circulate from the filter to the axle housing via the supply pipe.
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公开(公告)号：US20180274210A1
公开(公告)日：2018-09-27
申请号：US15540596
申请日：2016-11-09
申请人： KOMATSU LTD.
发明人： Minetaka NISHIMURA , Yuki SHIMANO , Takuya SONODA
摘要： A hydraulic excavator has a boom, an arm, a bucket, and a boom cylinder which drives the boom. A load value within the bucket is computed based on a load of the boom cylinder, and the load value obtained by computing is corrected based on an acceleration of extension/retraction of the boom cylinder.
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公开(公告)号：US20240355155A1
公开(公告)日：2024-10-24
申请号：US18683518
申请日：2022-08-09
申请人： Komatsu Ltd.
发明人： Akira Oka , Tatsuya Yamakawa
CPC分类号： G07C5/0825 , B60P1/04 , G01G19/08
摘要： A state estimation system of a dump truck including an engine and a dump body that includes a flow path through which exhaust gas discharged from the engine flows and on which a load is loaded includes an exhaust gas flow rate acquisition unit that acquires an exhaust gas flow rate indicating detection data of a flow rate of the exhaust gas flowing into the flow path, an exhaust gas temperature acquisition unit that acquires an exhaust gas temperature indicating detection data of a temperature of the exhaust gas flowing into the flow path, and a body temperature estimation unit that estimates a body temperature indicating a temperature of a predetermined portion of an inner surface of the dump body in contact with the load on the basis of the exhaust gas flow rate and the exhaust gas temperature.
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公开(公告)号：US20240352705A1
公开(公告)日：2024-10-24
申请号：US18683003
申请日：2022-09-05
申请人： Komatsu Ltd.
发明人： Kazuhiro HATAKE , Yusuke SAIGO
CPC分类号： E02F3/439 , E02F3/308 , E02F3/437 , E02F9/2203
摘要： A control device of a work machine includes work equipment including a work tool and is configured to perform an automatic loading control of holding a posture of the work tool in a target posture and moving a position of the work tool up to a target position, in which in the automatic loading control, when the posture of the work tool is out of a predetermined range from the target posture, the control device is configured to prioritize a control of the posture of the work tool over a control of the position of the work tool until the posture of the work tool falls within the predetermined range.
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公开(公告)号：US20240344535A1
公开(公告)日：2024-10-17
申请号：US18683265
申请日：2022-08-10
申请人： Komatsu Ltd.
发明人： Koutaro Asano , Keisuke Tasaki , Yuki lkezawa
IPC分类号： F15B15/14
CPC分类号： F15B15/1447 , F15B15/149
摘要： A hydraulic cylinder includes a cylinder tube, a piston rod that has a rod end portion disposed inside the cylinder tube and moves in an axial direction, a first rod passage that is formed inside the piston rod and connects a hydraulic source and a first opening formed in the rod end portion, a plug that is inserted into the first rod passage through the first opening, and a piston that is fixed to the piston rod in a state of covering at least a part of the plug and partitions an inside of the cylinder tube into a bottom chamber on one side in the axial direction and a head chamber on the other side in the axial direction.
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公开(公告)号：US12116756B2
公开(公告)日：2024-10-15
申请号：US17779302
申请日：2021-02-17
申请人： KOMATSU LTD.
发明人： Mitsuhiko Kamado , Takashi Sawaki
CPC分类号： E02F9/264 , E02F9/2228 , E02F9/2235 , E02F9/2296
摘要： A first process acquires a true value of the position of a predetermined portion. A second process acquires a reference position of a work machine. A third process determines a plurality of correction candidate values of a parameter. The correction candidate values are used so that a calculation value of the position of the predetermined portion calculated based on the parameter from the reference position matches the true value. A fourth process calculates an assessment value indicative of the difference between the true value and a calculation value for each of plurality of correction candidate values. A fifth process determines a confirmation correction value of the parameter from among the plurality of correction candidate values based on the assessment value.
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公开(公告)号：US12116754B2
公开(公告)日：2024-10-15
申请号：US17769794
申请日：2020-11-18
申请人： Komatsu Ltd.
摘要： In an operation area presentation device according to the present invention, a reception unit is configured to receive history data of a position of an operation site in which a work machine is present. A calculation unit is configured to calculate a staying time of the work machine for each of a plurality of areas of the operation site. A generation unit is configured to generate an operation area map obtained by mapping the staying time for each of the plurality of areas to a map of the operation site. An output unit is configured to output the generated operation area map.
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公开(公告)号：US20240337089A1
公开(公告)日：2024-10-10
申请号：US18681971
申请日：2022-08-29
申请人： KOMATSU LTD.
发明人： Takuya SONODA , Yoshihide NAKAE , Takashi MAEDA
CPC分类号： E02F3/847 , E02F9/2004 , E02F9/2041 , E02F9/2203
摘要： A controller acquires vehicle body posture data. The controller acquires work implement posture data. The controller calculates a height of a work implement in a gravity direction from a reference point of a vehicle body based on the vehicle body posture data and the work implement posture data. The controller controls an actuator so that the height of the work implement in the gravity direction is maintained even when a posture of the vehicle body changes.
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公开(公告)号：US12105025B2
公开(公告)日：2024-10-01
申请号：US17413726
申请日：2020-03-10
申请人： KOMATSU LTD.
发明人： Takatoshi Sasaki , Masaya Kato
CPC分类号： G01N21/85 , E02F9/2278 , E02F9/26 , F15B15/20 , F15B19/00 , G01N33/2841 , E02F9/202
摘要： An inspection device for hydraulic equipment includes a hydraulic circuit having a branch valve, an optical detection section, a pump configured to supply oil to the hydraulic circuit, and a controller. The optical detection section includes an inspection oil passage connected to the branch valve. The inspection oil passage includes a filter arranged to collect foreign matter. The controller operates the branch valve to supply oil to the inspection oil passage. The optical detection section includes first and second foreign matter detection sections arranged on upstream and downstream sides of the filter to detect foreign matter. A work vehicle includes the inspection device. An inspection system includes the inspection device. An inspection method includes supplying oil to an inspection oil passage by operating a branch valve of a hydraulic circuit, and detecting foreign matter on upstream and downstream sides of a filter arranged on the inspection oil passage.
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