-
公开(公告)号：US10787788B2
公开(公告)日：2020-09-29
申请号：US15757084
申请日：2017-07-14
Applicant: KOMATSU LTD.
Inventor： Takeo Yamada , Ayumi Ohkuma , Toru Matsuyama
Abstract: A work machine according to an aspect includes: a dipper stick; a boom; a cylinder for driving the boom; an operation apparatus for operating the dipper stick; and a controller for performing intervention control by using the boom in accordance with an operation command issued from the operation apparatus to achieve land grading. The controller determines whether or not the operation command from the operation apparatus indicates an amount greater than or equal to a predetermined amount, and corrects a speed of the cylinder when the operation command from the operation apparatus indicates an amount greater than or equal to the predetermined amount.
-
2.发明申请CONSTRUCTION MACHINE CONTROL SYSTEM AND METHOD OF CONTROLLING CONSTRUCTION MACHINE 审中-公开施工机械控制系统及其控制方法公开(公告)号：US20160040398A1
公开(公告)日：2016-02-11
申请号：US14782937
申请日：2015-06-02
Applicant: KOMATSU LTD.
Inventor： Jin Kitajima , Yoshiki Kami , Takeo Yamada , Toru Matsuyama , Masashi Ichihara
CPC classification number: E02F3/435 , E02F3/32 , E02F9/22 , E02F9/2228 , E02F9/2285 , E02F9/2296 , E02F9/262 , E02F9/265
Abstract: A control method includes: detecting an attitude of a work machine including a boom, an arm, and a bucket; operating an operating device to drive a movable member including the arm and the bucket; detecting an amount of operation of the operating device; generating position data of a cutting edge of the bucket based on the detected attitude; acquiring a target shape of an excavation object to be excavated by the work machine and calculating a distance between the cutting edge and the target shape based on the position data and the target shape; setting a limited amount of operation limiting a speed of the movable member based on the detected amount of operation; and outputting a signal to a valve that adjusts an amount of operating oil supplied to a hydraulic cylinder driving the work machine so that the movable member is driven with the limited amount of operation.
Abstract translation: 控制方法包括：检测包括吊杆，臂和铲斗的作业机械的姿态; 操作操作装置以驱动包括所述臂和所述铲斗的可动构件; 检测操作装置的操作量; 基于检测到的姿态生成铲斗的切削刃的位置数据; 获取由作业机械挖掘的挖掘对象的目标形状，并基于位置数据和目标形状计算切削刃与目标形状之间的距离; 基于检测到的操作量设定限制可动构件的速度的有限量的操作; 并将信号输出到调节向驱动作业机械的液压缸供给的工作油量的阀，使得可动构件以有限的操作量被驱动。
-
公开(公告)号：US11072910B2
公开(公告)日：2021-07-27
申请号：US15758059
申请日：2017-06-27
Applicant: KOMATSU LTD.
Inventor： Takeo Yamada , Shota Nakamura , Gousuke Nakashima
Abstract: A plurality of electromagnetic proportional control valves are configured to control a pressure of a pilot oil generated by operation of a first control lever device and a second control lever device and, in accordance with the pressure of the pilot oil, adjust a flow rate of a hydraulic oil supplied to hydraulic cylinders. The plurality of electromagnetic proportional control valves are divided into a first valve block including at least one of the electromagnetic proportional control valves and a second valve block including at least one of the electromagnetic proportional control valves. The first valve block and the second valve block are arranged to be separated from each other.
-
公开(公告)号：US11031684B2
公开(公告)日：2021-06-08
申请号：US15757677
申请日：2017-06-26
Applicant: KOMATSU LTD.
Inventor： Takeo Yamada , Hiroshi Abe , Ryosuke Okui , Gousuke Nakashima
Abstract: A hydraulic excavator includes: a vehicular body; a cab placed on the vehicular body; and a plurality of antennas for receiving satellite positioning signals, the plurality of antennas including a main antenna and a sub-antenna. The main antenna is attached to the cab. The sub-antenna is attached to the vehicular body without the cab being interposed.
-
公开(公告)号：US09797111B2
公开(公告)日：2017-10-24
申请号：US14408370
申请日：2014-09-10
Applicant: KOMATSU LTD.
Inventor： Yoshiki Kami , Takeo Yamada
CPC classification number: E02F3/437 , E02F3/32 , E02F3/435 , E02F9/2004 , E02F9/2033 , E02F9/2203 , E02F9/2207 , E02F9/2228 , E02F9/2285 , E02F9/262 , G05B2219/2616
Abstract: A work vehicle includes an arm. An arm cylinder drives the arm. A direction control valve operates the arm cylinder by allowing supply of a hydraulic oil to the arm cylinder as a spool moves. An oil path is connected to the direction control valve. A pilot oil for moving the spool flows through the oil path. A proportional solenoid valve for arm excavation is provided in the oil path. An arm control member is provided for an operator to operate drive of the arm. An amount of operation of the arm control member is equal to or smaller than a prescribed value in a first operation state and greater than the prescribed value in a second operation state. A command current instructing an opening of the proportional solenoid valve for arm excavation is set to a constant value in the first operation state.
-
Patent Agency Ranking
公开(公告)号：US09382693B2
公开(公告)日：2016-07-05
申请号：US14380851
申请日：2014-04-28
Applicant: KOMATSU LTD.
Inventor： Takeo Yamada , Tomohiro Nakagawa
CPC classification number: E02F9/2221 , E02F9/14 , E02F9/2012 , E02F9/2282 , E02F9/2285 , E02F9/2292 , F15B11/10 , F15B13/0401 , F15B21/08 , F15B2211/575 , F15B2211/6316 , F15B2211/6346 , F15B2211/6355 , F15B2211/6653 , F15B2211/67 , F16K31/42 , G05D7/0641 , Y10T137/0379 , Y10T137/87113
Abstract: A hydraulic excavator is provided with an arm cylinder, an arm switching valve, a sixth pilot pressure control valve, a sixth electromagnetic proportional valve, a sixth upstream pilot flow path, a sixth hydraulic pressure sensor, and a control section. The control section selects at least one item of current value information from a plurality of items of current value information on the basis of a hydraulic pressure that is detected by the sixth hydraulic pressure sensor. The control section is configured to set a current value of a current that is output to the sixth electromagnetic proportional valve on the basis of the current value information that is selected.
Abstract translation: 液压挖掘机设有臂缸，臂切换阀，第六先导压力控制阀，第六电磁比例阀，第六上游先导流路，第六液压传感器和控制部。 控制部基于由第六液压传感器检测到的液压，从多个当前值信息项中选择至少一个当前值信息。 控制部被配置为基于所选择的当前值信息来设定输出到第六电磁比例阀的电流的当前值。
-
公开(公告)号：US11047108B2
公开(公告)日：2021-06-29
申请号：US15756240
申请日：2017-07-14
Applicant: KOMATSU LTD.
Inventor： Tom Matsuyama , Ayumi Ohkuma , Takeo Yamada
Abstract: A work machine according an aspect includes a work implement, an operation apparatus for operating the work implement, and a controller for controlling the work implement. The controller performs intervention control for lowering the work implement based on an operation command from the operation apparatus, and reduces a speed of the work implement during the intervention control to stop the work implement before completion of the intervention control.
-
8.发明申请公开(公告)号：US20170121930A1
公开(公告)日：2017-05-04
申请号：US14391567
申请日：2014-06-02
Applicant: Komatsu Ltd.
Inventor： Jin Kitajima , Yoshiki Kami , Takeo Yamada
CPC classification number: E02F3/435 , E02F3/32 , E02F9/22 , E02F9/2228 , E02F9/2285 , E02F9/2296 , E02F9/262 , E02F9/265
Abstract: A method of controlling a construction machine including a work machine including a boom, an arm, and a bucket, the method comprising: determining a speed limit according to a distance between the bucket and a target excavation landform based on the target excavation landform and bucket position data and limiting a speed of the boom so that a speed at which the work machine approaches the target excavation landform is equal to or smaller than the speed limit; operating an operating device in order to drive a movable member including at least one of the arm and the bucket; detecting an amount of operation of the operating device; setting a limited amount of operation for limiting a speed of the movable member based on a detection result of the detection device; and outputting a control signal so that the movable member is driven with the limited amount of operation.
-
公开(公告)号：US11136745B2
公开(公告)日：2021-10-05
申请号：US15758074
申请日：2017-06-30
Applicant: KOMATSU LTD.
Inventor： Takeo Yamada , Kenichirou Tanaka , Takafumi Katayama , Taiki Sugawara , Shogo Atsumi
Abstract: A stereo camera provided in an earth-moving machine includes a first image pick-up portion and a second image pick-up portion. An optical axis of the first image pick-up portion and an optical axis of the second image pick-up portion are inclined away from a work implement at angles different from each other with respect to a central axis of the work implement in a plan view as a distance from a main body is greater.
-
公开(公告)号：US09481976B2
公开(公告)日：2016-11-01
申请号：US14419542
申请日：2014-09-10
Applicant: KOMATSU LTD.
Inventor： Yoshiki Kami , Takeo Yamada , Yuto Fujii , Takeshi Takaura
IPC: E02F3/43 , E02F3/30 , G05B19/41 , E02F9/26 , G05B19/416
CPC classification number: E02F3/435 , E02F3/30 , E02F3/437 , E02F9/262 , E02F9/265 , G05B19/416 , G05B2219/40043 , G05B2219/43203 , G05B2219/45012
Abstract: A work vehicle includes a boom, an arm, a bucket, an arm control member, a speed limit determination portion, and a target speed determination portion. The speed limit determination portion determines a speed limit for limiting a speed of a cutting edge of the bucket in accordance with a distance between a cutting edge and a design surface. The target speed determination portion determines a target speed of the boom based on the speed limit. The speed limit determination portion decides on a speed limit calculated based on correlation between the speed limit and the distance between the design surface and the cutting edge when an amount of operation of the arm control member is equal to or greater than a prescribed amount and decides on a speed limit lower than the speed limit calculated based on the correlation when the amount of operation is smaller than the prescribed amount.
Abstract translation: 工作车辆包括吊杆，臂，铲斗，臂控制构件，限速确定部和目标速度确定部。 速度限制判定部根据切削刃和设计面之间的距离，决定限制铲斗的切削刃速度的速度限制。 目标速度确定部分基于速度限制来确定起重臂的目标速度。 速度限制判断部判定在臂控制部件的动作量为规定量以上的情况下，基于速度限制与设计面与切削刃之间的距离的关系而计算出的速度限制，并且决定 在比操作量小于规定量时基于相关性计算的速度限制的速度限制。
-
-
-
-
-
-
-
-
-
Search Results
13
records
(took 0.016 seconds)
