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公开(公告)号：US20230022248A1
公开(公告)日：2023-01-26
申请号：US17788077
申请日：2020-12-09
申请人： Komatsu Ltd.
发明人： Yuuji Shibata , Yusuke Fujii
摘要： A control system for a work machine includes a plurality of hydraulic pumps that discharge hydraulic oil, a hydraulic cylinder that moves a working equipment element, a plurality of flow rate control valves that are respectively connected to the hydraulic pumps and adjust a flow rate of the hydraulic oil supplied to the hydraulic cylinder, a plurality of supply flow paths respectively connected to the of flow rate control valves, a meter-in flow path that connects a collective part of the supply flow paths and an inlet of the hydraulic oil in the hydraulic cylinder, a plurality of discharge flow paths respectively connected to the flow rate control valves, a meter-out flow path that connects a collective part of the discharge flow paths and an outlet of the hydraulic oil in the hydraulic cylinder, and a throttle disposed in the meter-out flow path.
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公开(公告)号：US20230021713A1
公开(公告)日：2023-01-26
申请号：US17778714
申请日：2020-12-04
申请人： Komatsu Ltd.
IPC分类号： F03C1/34 , F04B1/2042 , F04B53/16 , F04B1/2021 , F03C1/06 , F03C1/32
摘要： A hydraulic pump/motor includes: a cylinder block rotating about a rotation axis; a piston in a cylinder bore; and a valve plate facing a cylinder port. The valve plate includes: a high pressure port through which hydraulic oil discharged from the cylinder port flows; a low pressure port through which the oil to be sucked into the cylinder port flows; a region disposed between the high and low pressure ports in a circumferential direction of the rotation axis and including a top dead center position facing the cylinder port of the cylinder bore in which the piston moved to a top dead center is disposed; and a residual pressure release port between the top dead center position and the low pressure port in the region. The residual pressure release port includes first and second ports disposed at a positions different from each other in the radial direction of the rotation axis.
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23.发明申请公开(公告)号：US20230018377A1
公开(公告)日：2023-01-19
申请号：US17781481
申请日：2021-01-07
申请人： KOMATSU LTD.
发明人： Jun MATSUMOTO , Yuuki KOBAYASHI
摘要： A camera captures an image of a region including at least a portion of an operating member and generates image data indicative of the image. A controller acquires the image data from the camera. The controller determines whether an operation of the operating member by an operator is an intentional operation or an unintentional operation based on the image. When the operation of the operating member by the operator is determined to be the intentional operation, the controller controls a work machine according to the operation of the operating member. When the operation of the operating member by the operator is determined to be the unintentional operation, the controller invalidates the operation of the operating member.
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公开(公告)号：US20220410694A1
公开(公告)日：2022-12-29
申请号：US17777195
申请日：2020-10-29
申请人： Komatsu Ltd.
发明人： Masahiro Ikeda , Kazuya Imamura , Takaaki Mizokami , Naotsuna Matsuda , Takeshi Nakagawa , Naoya Ando
摘要： A work machine includes: a partition member provided with an intake port and an exhaust port and forming an engine room; an engine disposed in the engine room; a cooling fan disposed on an intake port side of the engine in the engine room; an exhaust pipe discharging exhaust gas from the engine; and an exhaust duct disposed in the engine room and having an inflow port into which air from the cooling fan flows, and an outflow port. At least a portion of the exhaust duct is disposed above the engine and has a facing surface facing the engine and a through-hole provided in the facing surface. At least a portion of the exhaust pipe is disposed in the through-hole. A gap is formed between an outer surface of the exhaust pipe and an inner surface of the through-hole.
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公开(公告)号：US20220403617A1
公开(公告)日：2022-12-22
申请号：US17779453
申请日：2020-11-25
申请人： KOMATSU LTD.
发明人： Toru MATSUYAMA
摘要： A distance calculation unit calculates a bucket distance that is a distance between a point on a bucket and a target design surface representing a target shape of an excavation target. An intervention control unit calculates an intervention control amount to suppress a speed of work equipment such that the bucket does not intrude on the target design surface based on the bucket distance. An attachment control unit calculates an attachment control amount to rotate the bucket around an attachment axis such that an edge of the bucket and the target design surface approach each other in a parallel state. An attachment limiting unit limits rotation of the bucket around the attachment axis such that the bucket distance is not increased by a movement of the work equipment based on the intervention control amount and the attachment control amount.
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公开(公告)号：US11479944B2
公开(公告)日：2022-10-25
申请号：US17258032
申请日：2019-05-10
申请人： KOMATSU LTD.
发明人： Makoto Sasaki , Hiroaki Tanaka , Takeshi Ikeda
摘要： The cab includes a front pillar on the first side face and a front pillar disposed on the second side face and located behind the front pillar. The cab includes a front transparent member located between the first side face and the second side face and a lateral transparent member provided the second side face and connected to the front pillar. The cab includes a roller disposed on the front transparent member and a bracket disposed on the lateral transparent member and provided with a rail member to guide the roller.
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公开(公告)号：US20220327901A1
公开(公告)日：2022-10-13
申请号：US17851113
申请日：2022-06-28
申请人： Komatsu Ltd.
IPC分类号： G08B13/196 , B60Q9/00 , E02F9/26 , G06V20/56
摘要： A work vehicle periphery monitoring system includes: an alarm range storage unit that stores an alarm range, in which an alarm output is required when an object is present, in a detection range of an object detection device that detects an object present in a periphery of a work vehicle; a work mode determination unit that determines a work mode of the work vehicle; an alarm range changing unit that changes the alarm range in the detection range when it is determined that the work mode is a specific work mode; and an alarm control unit that causes an alarm device to output an alarm when an object is present in the alarm range.
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公开(公告)号：US20220325499A1
公开(公告)日：2022-10-13
申请号：US17638244
申请日：2020-07-07
申请人： KOMATSU LTD.
发明人： Takuya SONODA , Takeshi KAMIMAE , Yukihisa SAKAI
摘要： A motor grader representing a work vehicle includes a steering mechanism and a control unit. The control unit generates a travel path of the motor grader based on a position and an azimuth of the motor grader and a direction of travel of the motor grader and controls the steering mechanism such that the motor grader travels along the generated travel path.
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公开(公告)号：US20220316179A1
公开(公告)日：2022-10-06
申请号：US17639145
申请日：2020-09-15
申请人： KOMATSU LTD.
发明人： Masashi KATOH , Yuuki KOBAYASHI , Keisuke KUBOTA
摘要： A work vehicle includes an operating lever configured to operate a work implement, an actuator configured to move the operating lever, and a control section configured to control the actuator to move the operating lever to a retreat position outside an operation range of the operating lever.
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公开(公告)号：US20220316177A1
公开(公告)日：2022-10-06
申请号：US17612754
申请日：2020-07-09
申请人： KOMATSU LTD.
摘要： The cab includes an operator's seat, a console disposed on a lateral side of the operator's seat, a control lever disposed in the console for controlling a work implement, and a monitor disposed in the console as a display unit. In a top view, the control lever and the monitor are disposed in this order from the operator's seat toward the outside.
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