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公开(公告)号：US10745889B2
公开(公告)日：2020-08-18
申请号：US15540596
申请日：2016-11-09
Applicant: KOMATSU LTD.
Inventor： Minetaka Nishimura , Yuki Shimano , Takuya Sonoda
IPC: G01G19/14 , E02F9/26 , E02F3/32 , G01P15/16 , G05B13/04 , E02F3/42 , G01G19/08 , E02F9/22 , E02F3/43 , G01P3/487
Abstract: 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：US09938694B2
公开(公告)日：2018-04-10
申请号：US15301779
申请日：2016-03-29
Applicant: Komatsu Ltd.
Inventor： Toru Matsuyama , Yuki Shimano , Masashi Ichihara , Yoshiki Kami
CPC classification number: E02F9/265 , E02F3/32 , E02F3/435 , E02F9/20 , E02F9/2033 , E02F9/22 , E02F9/2292 , E02F9/2296 , E02F9/262
Abstract: A control device for a work machine is a device for controlling a working unit of a work machine to excavate an object to be excavated. The control device includes a control unit for controlling the working unit to prevent a working implement of the working unit from crossing a predetermined target profile, and a switching unit for defining the target profile as an offset profile separated by a predetermined distance from a target excavation profile that is a target profile for finishing of the object to be excavated or the target excavation profile, based on an attitude of the working implement relative to the target excavation profile.
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公开(公告)号：US09783961B2
公开(公告)日：2017-10-10
申请号：US14127263
申请日：2013-04-12
Applicant: Komatsu Ltd.
Inventor： Katsuhiro Ikegami , Yoshiki Kami , Yuki Shimano , Hayato Matsumoto
CPC classification number: E02F9/264 , E02F9/2271 , E02F9/267 , F15B15/2815 , F15B19/002
Abstract: The present invention includes a stroke sensor which is arranged on a hydraulic cylinder and measures a stroke length of the hydraulic cylinder; a rotary encoder and a magnetic force sensor which measure a reset reference point to reset a value of the stroke length measured by the stroke sensor; a stroke end detection processing unit which detects a stroke end position of the hydraulic cylinder; a calibration processing unit which calibrates the measured value of the stroke length when the reset reference point and/or the stroke end position is detected; an HMI monitor which displays an entire work machine mounted with the hydraulic cylinder when an initial calibration work for the hydraulic cylinder is carried out; and a highlight display processing unit that highlights a moving portion to drive a hydraulic cylinder to be calibrated along with an indication of a driving direction.
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4.发明授权公开(公告)号：US09551133B2
公开(公告)日：2017-01-24
申请号：US14350461
申请日：2013-04-12
Applicant: Komatsu Ltd.
Inventor： Katsuhiro Ikegami , Yoshiki Kami , Yuki Shimano , Hayato Matsumoto
CPC classification number: E02F9/226 , E02F3/435 , E02F9/22 , E02F9/2271 , E02F9/2296 , E02F9/26 , E02F9/265 , F15B15/2807 , F15B15/2815 , F15B19/002 , G01D5/145 , G01D18/00
Abstract: A stroke operation calibration control device for a hydraulic cylinder includes: movable portions; hydraulic cylinders; a stroke sensor measuring a stroke length of the hydraulic cylinder; a reset sensor measuring a reset reference point at which a measurement value of the stroke length obtained by the stroke sensor is reset; a stroke end detection process unit detecting a stroke end position of the hydraulic cylinder; a calibration process unit calibrating the measurement value of the stroke length upon the detection of the reset reference point and/or the stroke end position; a malfunction detection unit outputting an error when the stroke length is in the predetermined measurement range; and a control unit prohibiting the reset until the stroke length has passed the reset reference point at power input time.
Abstract translation: 一种用于液压缸的行程操作校准控制装置，包括：可移动部分; 液压缸; 测量液压缸的行程长度的行程传感器; 复位传感器，其测量由所述行程传感器获得的行程长度的测量值复位的复位基准点; 行程结束检测处理单元，检测液压缸的行程结束位置; 校准处理单元，在检测到复位基准点和/或行程终点位置时校准行程长度的测量值; 当行程长度在预定测量范围内时输出错误的故障检测单元; 以及控制单元，禁止复位，直到行程长度在功率输入时间经过复位基准点。
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公开(公告)号：US10822769B2
公开(公告)日：2020-11-03
申请号：US15757096
申请日：2017-04-10
Applicant: KOMATSU LTD.
Inventor： Yuki Shimano , Toru Matsuyama , Takuya Sonoda
Abstract: An earthmoving machine includes a work implement, a distance calculation unit, and a hydraulic cylinder control unit. The work implement includes a boom, an arm, and a bucket. The distance calculation unit calculates a distance between a monitoring point in the bucket and design topography representing an aimed shape of a land grading target. The hydraulic cylinder control unit outputs a command signal for lowering the boom when the distance between the monitoring point and the design topography is equal to or smaller than a prescribed value and when the bucket is expected to move in such a direction that the monitoring point moves away from the design topography as a result of an operation of the arm.
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Patent Agency Ranking
公开(公告)号：US10697149B2
公开(公告)日：2020-06-30
申请号：US15757085
申请日：2017-01-10
Applicant: KOMATSU LTD.
Inventor： Yuki Shimano , Takuya Sonoda , Kenji Ohiwa
Abstract: A work vehicle includes: a hydraulic operation apparatus for operating an actuator; a main controller configured to generate a command current in accordance with an amount of operation of the operation apparatus; an electromagnetic proportional control valve configured to generate command pilot pressure in accordance with the command current; and a main valve configured to adjust a flow rate of hydraulic oil for operating the actuator based on the command pilot pressure. The electromagnetic proportional control valve is provided in a pilot oil passage that connects a pilot pump and a main valve, and configured to utilize hydraulic pressure supplied from the pilot pump to generate command pilot pressure. The operation apparatus is provided in an operation apparatus oil passage that is different from the pilot oil passage.
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公开(公告)号：US10443214B2
公开(公告)日：2019-10-15
申请号：US15704400
申请日：2017-09-14
Applicant: KOMATSU LTD.
Inventor： Yuki Shimano , Jin Kitajima , Yoshiki Kami , Masashi Ichihara
Abstract: A control system for a work vehicle includes at least one sensor, an operating device, and a controller. The operating device includes at least one operating member. The controller is programmed to control a work implement of the work vehicle based on signals from the at least one sensor and the operating device. The controller is further programmed to use the signals to obtain a distance between the work implement and a design terrain which represents a target shape of a work object, and to determine whether a surface compaction determination condition indicating that work performed by the work implement is surface compaction work is satisfied. The controller executes a surface compaction control in which a velocity of the work implement toward the design terrain is limited in response to the distance between the work implement and the design terrain when the surface compaction determination condition is satisfied.
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公开(公告)号：US10036141B2
公开(公告)日：2018-07-31
申请号：US15118480
申请日：2016-04-08
Applicant: KOMATSU LTD.
Inventor： Takashi Yokoo , Yuki Shimano , Tomohiro Nakagawa
CPC classification number: E02F9/2041 , E02F3/32 , E02F3/437 , E02F3/439 , E02F9/2004 , E02F9/2012 , E02F9/22 , E02F9/262 , E02F9/265
Abstract: A control system for a work vehicle having a work implement includes a first operating lever for the work implement, a first operating member and a controller. The first operating member is provided on the first operating lever. The controller is configured to perform an automatic control of the work implement. The controller is configured to perform a function of the automatic control, which is allocated to the first operating member, in response to operating the first operating member when a performance condition, including that the first operating lever is located in a neutral position thereof, is satisfied.
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公开(公告)号：US20170284070A1
公开(公告)日：2017-10-05
申请号：US15301779
申请日：2016-03-29
Applicant: KOMATSU LTD.
Inventor： Toru Matsuyama , Yuki Shimano , Masashi Ichihara , Yoshiki Kami
CPC classification number: E02F9/265 , E02F3/32 , E02F3/435 , E02F9/20 , E02F9/2033 , E02F9/22 , E02F9/2292 , E02F9/2296 , E02F9/262
Abstract: A control device for a work machine is a device for controlling a working unit of a work machine to excavate an object to be excavated. The control device includes a control unit for controlling the working unit to prevent a working implement of the working unit from crossing a predetermined target profile, and a switching unit for defining the target profile as an offset profile separated by a predetermined distance from a target excavation profile that is a target profile for finishing of the object to be excavated or the target excavation profile, based on an attitude of the working implement relative to the target excavation profile.
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10.发明申请APPARATUS AND METHOD FOR ASSISTING HYDRAULIC CYLINDER STROKE INITIAL CALIBRATION WORK 有权用于辅助液压缸冲击初始校准工作的装置和方法公开(公告)号：US20140326039A1
公开(公告)日：2014-11-06
申请号：US14127263
申请日：2013-04-12
Applicant: Komatsu Ltd.
Inventor： Katsuhiro Ikegami , Yoshiki Kami , Yuki Shimano , Hayato Matsumoto
IPC: E02F9/26
CPC classification number: E02F9/264 , E02F9/2271 , E02F9/267 , F15B15/2815 , F15B19/002
Abstract: The present invention includes a stroke sensor which is arranged on a hydraulic cylinder and measures a stroke length of the hydraulic cylinder; a rotary encoder and a magnetic force sensor which measure a reset reference point to reset a value of the stroke length measured by the stroke sensor; a stroke end detection processing unit which detects a stroke end position of the hydraulic cylinder; a calibration processing unit which calibrates the measured value of the stroke length when the reset reference point and/or the stroke end position is detected; an HMI monitor which displays an entire work machine mounted with the hydraulic cylinder when an initial calibration work for the hydraulic cylinder is carried out; and a highlight display processing unit that highlights a moving portion to drive a hydraulic cylinder to be calibrated along with an indication of a driving direction.
Abstract translation: 本发明包括一个行程传感器，其布置在液压缸上并测量液压缸的行程长度; 旋转编码器和磁力传感器，其测量复位参考点以重置由行程传感器测量的行程长度的值; 行程结束检测处理单元，其检测液压缸的行程结束位置; 校准处理单元，其在检测到复位参考点和/或行程结束位置时校准行程长度的测量值; 在进行液压缸的初始校准工作时，显示安装有液压缸的整个作业机的HMI监视器; 以及高亮显示处理单元，其突出显示驱动被校准的液压缸的运动部分以及驱动方向的指示。
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