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公开(公告)号：US10480160B2
公开(公告)日：2019-11-19
申请号：US15540077
申请日：2016-11-09
Applicant: KOMATSU LTD.
Inventor： Akira Tanishige , Yoshiki Kami , Takashi Yokoo , Yuto Fujii , Haruki Nishiguchi
Abstract: A main controller controlling an operation of a work vehicle includes a determination unit and an abnormal condition determination unit. The determination unit determines whether or not an attachment has a sensor based on information on an attachment. When the determination unit determines that the attachment has the sensor and when the abnormal condition determination unit cannot receive a signal from the sensor, the abnormal condition determination unit determines that an abnormal condition has occurred.
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公开(公告)号：US10358799B2
公开(公告)日：2019-07-23
申请号：US15561546
申请日：2016-11-09
Applicant: KOMATSU LTD.
Inventor： Yuto Fujii , Takashi Yokoo
Abstract: A work vehicle includes an operation apparatus for operating a work implement, a valve adjusting a flow rate of a hydraulic oil operating the work implement, an electromagnetic proportional control valve provided in a pilot oil path connecting a pilot oil pressure source and a pilot chamber of the valve to each other and generating a command pilot pressure with a source pressure input from the pilot oil pressure source being used as a primary pressure, and a main controller outputting a command current operating the electromagnetic proportional control valve in accordance with an operation of the operation apparatus. The main controller includes a data table storage unit storing data for predicting an operation speed of the work implement and a calibration unit calibrating data on the condition that an operation onto the operation apparatus is performed.
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公开(公告)号：US10106952B2
公开(公告)日：2018-10-23
申请号：US15328584
申请日：2016-05-31
Applicant: Komatsu Ltd.
Inventor： Tsutomu Iwamura , Yuhei Yamamoto , Yuto Fujii , Takashi Yokoo , Yoshiro Iwasaki
Abstract: A work machine control system that controls a work machine including a working device having a working tool that rotates about a shaft line includes: a target construction shape generation unit that generates a target construction shape indicating a target shape of a construction target of the work machine; a target shape calculation unit that calculates a control target shape which is a target shape when controlling rotation of the working tool from the target construction shape and calculates an extended target shape obtained by extending the control target shape; and a working device control unit that controls the rotation of the working tool about the shaft line based on a distance between the working tool and the control target shape and the extended target shape.
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Patent Agency Ranking
公开(公告)号：US10323381B2
公开(公告)日：2019-06-18
申请号：US15500272
申请日：2016-06-24
Applicant: KOMATSU LTD.
Inventor： Yuto Fujii , Takashi Yokoo
Abstract: A work implement has a boom, an arm, and a bucket pivotable around a bucket axis which is a pivot axis with respect to the arm and a tilt axis orthogonal to the bucket axis. The hydraulic cylinder has the bucket pivot around the tilt axis. The regulation valve regulates an amount of supply of a hydraulic oil to be supplied to the hydraulic cylinder based on a command signal. The position sensor measures a stroke length of the hydraulic cylinder. The control unit resets the stroke length measured by the position sensor. The control unit determines proximity to a stroke end of the hydraulic cylinder, generates a command signal for increasing a degree of opening of the regulation valve in the proximity of the stroke end, and resets the stroke length measured by the position sensor while the regulation valve is open in response to the command signal.
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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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6.发明授权公开(公告)号：US10017913B2
公开(公告)日：2018-07-10
申请号：US15326700
申请日：2016-05-31
Applicant: Komatsu Ltd.
Inventor： Tsutomu Iwamura , Jin Kitajima , Yoshiro Iwasaki , Yuto Fujii , Takashi Yokoo
CPC classification number: E02F3/435 , E02F3/32 , E02F3/3677 , E02F9/16 , E02F9/2004 , E02F9/2033 , E02F9/2267 , E02F9/2271 , E02F9/2285 , E02F9/2296 , E02F9/262 , G05D1/0278
Abstract: A construction machine control system includes: a target construction ground shape generation unit which generates a target construction ground shape indicating a target shape of an excavation target; a working device control instruction determination unit which outputs an instruction for driving the working device in a working device operation plane orthogonal to at least one of a boom axis, an arm axis, and a bucket axis based on an operation state of at least one of an arm and a bucket and a distance between the bucket and the target construction ground shape; and a tilting control instruction determination unit which outputs an instruction for performing a tilting control of the bucket about a tilting axis based on a tilting state of the bucket and the distance between the bucket and the target construction ground shape.
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公开(公告)号：US20170342680A1
公开(公告)日：2017-11-30
申请号：US15328584
申请日：2016-05-31
Applicant: Komatsu Ltd.
Inventor： Tsutomu Iwamura , Yuhei Yamamoto , Yuto Fujii , Takashi Yokoo , Yoshiro Iwasaki
CPC classification number: E02F3/435 , E02F3/32 , E02F3/3677 , E02F3/369 , E02F9/0866 , E02F9/16 , E02F9/22 , E02F9/2267 , E02F9/2271 , E02F9/2296 , E02F9/262 , E02F9/264 , G05D1/0278 , G05D2201/0202
Abstract: A work machine control system that controls a work machine including a working device having a working tool that rotates about a shaft line includes: a target construction shape generation unit that generates a target construction shape indicating a target shape of a construction target of the work machine; a target shape calculation unit that calculates a control target shape which is a target shape when controlling rotation of the working tool from the target construction shape and calculates an extended target shape obtained by extending the control target shape; and a working device control unit that controls the rotation of the working tool about the shaft line based on a distance between the working tool and the control target shape and the extended target shape.
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8.发明申请公开(公告)号：US20170342679A1
公开(公告)日：2017-11-30
申请号：US15326700
申请日：2016-05-31
Applicant: Komatsu Ltd.
Inventor： Tsutomu Iwamura , Jin Kitajima , Yoshiro Iwasaki , Yuto Fujii , Takashi Yokoo
CPC classification number: E02F3/435 , E02F3/32 , E02F3/3677 , E02F9/16 , E02F9/2004 , E02F9/2033 , E02F9/2267 , E02F9/2271 , E02F9/2285 , E02F9/2296 , E02F9/262 , G05D1/0278
Abstract: A construction machine control system includes: a target construction ground shape generation unit which generates a target construction ground shape indicating a target shape of an excavation target; a working device control instruction determination unit which outputs an instruction for driving the working device in a working device operation plane orthogonal to at least one of a boom axis, an arm axis, and a bucket axis based on an operation state of at least one of an arm and a bucket and a distance between the bucket and the target construction ground shape; and a tilting control instruction determination unit which outputs an instruction for performing a tilting control of the bucket about a tilting axis based on a tilting state of the bucket and the distance between the bucket and the target construction ground shape.
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