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公开(公告)号：US20240279901A1
公开(公告)日：2024-08-22
申请号：US18170081
申请日：2023-02-16
申请人： Deere & Company
CPC分类号： E02F3/431 , E02F3/3414
摘要： A construction machine includes a machine frame, a plurality of ground engaging wheels or tracks supporting the machine frame, a work implement, and a lifting linkage connected to the work implement for lifting and lowering the work implement relative to the machine frame. A position sensor is operably associated with the lifting linkage for generating a position signal representative of a position of the lifting linkage within a range of motion. A hydraulic actuator is connected to the lifting linkage for moving the lifting linkage through the range of motion. A hydraulic pressure supply system provides hydraulic pressure to the hydraulic actuator. A controller is configured to receive the position signal and to generate a control signal to vary a system relief pressure of the hydraulic pressure supply system at least in part in response to the position signal.
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公开(公告)号：US12012725B2
公开(公告)日：2024-06-18
申请号：US17273844
申请日：2018-09-28
发明人： Koji Hyodo , Masaki Yoshikawa , Tetsuji Tanaka , Masaki Nukii
CPC分类号： E02F9/2246 , E02F3/3417 , E02F3/422 , E02F3/431 , E02F9/2289
摘要： Provided is a loading work vehicle capable of improving work efficiency even when working on a slippery road surface. An HST-traveling-drive wheel loader 1 comprises a step-on amount detection sensor 610, a discharge pressure detection sensor 75, a mode switch device 60, and a controller 5. The controller 5 is configured to: determine whether a limit mode is selected by the mode switch device 60; specify an operation state of the wheel loader 1 when determining that the limit mode is selected; limit maximum traction force to a first set value which is set based on a static friction coefficient μ and vehicle weight when specifying that a bucket 23 is pushed into a natural ground 100; and increase the maximum traction force from the first set value when specifying that excavation of the natural ground 100 is started.
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3.发明授权公开(公告)号：US11959255B2
公开(公告)日：2024-04-16
申请号：US16971707
申请日：2019-03-11
申请人： Komatsu Ltd.
发明人： Yohei Seki , Masataka Ozaki
IPC分类号： E02F9/00 , E02F3/00 , E02F9/20 , E02F9/26 , G01B11/00 , G01S17/00 , G01S17/89 , E02F3/43 , G01B11/245
CPC分类号： E02F9/262 , E02F9/2041 , G01S17/89 , E02F3/431 , G01B11/245
摘要： A work machine control device includes a measurement-data acquisition unit that acquires measurement data of a three-dimensional measurement device that is mounted on a work machine including work equipment and measures a three-dimensional shape including a ridgeline of a work target on which the working equipment performs work, and a target calculation unit that calculates and outputs, based on the measurement data regarding the ridgeline of the work target, a distance from the work machine to the work target or an angle of repose of the work target.
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公开(公告)号：US11926995B2
公开(公告)日：2024-03-12
申请号：US17286918
申请日：2019-12-24
摘要： A wheel loader includes a lift arm, bucket, a lift cylinder that rotates the lift arm, a hydraulic force detection unit that detects a hydraulic force of the lift cylinder, an arm angle detection unit that detects a rotation angle of the lift arm, and a controller that calculates a weight of the load. A hydraulic force measurement unit measures a hydraulic force with the rotation angle of the lift arm within a predetermined measurement angle range; and a hydraulic-force-change-rate calculation unit calculates a change rate of the hydraulic force with respect to the rotation angle of the lift arm, and then calculates a new hydraulic force change rate within the measurement angle range. The controller corrects an error of the weight of the load occurring due to the inclination angle of the body on the basis of the new hydraulic force change rate calculated by the hydraulic-force-change-rate calculation unit.
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公开(公告)号：US20230407598A1
公开(公告)日：2023-12-21
申请号：US18036266
申请日：2021-11-01
申请人： Komatsu Ltd.
CPC分类号： E02F9/2253 , E02F3/283 , E02F3/431 , F16D48/02 , E02F9/2203
摘要： A work vehicle includes a power source, a travel device that includes a clutch capable of adjusting a degree of engagement between the power source and a transmission, and travels on a basis of power transmitted from the power source, working equipment, a drive device that operates the working equipment on a basis of power transmitted from the power source, and a control device that outputs a control command for controlling the degree of engagement of the clutch on a basis of a state of the working equipment.
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6.发明授权公开(公告)号：US11788258B2
公开(公告)日：2023-10-17
申请号：US16825249
申请日：2020-03-20
申请人： Caterpillar Inc.
发明人： Shaun D. Currier
摘要： A method for determining implement load characteristics of a load carrying mobile machine includes receiving at least pressure data and position data associated with a payload received by the implement. The method also includes determining a locational value associated with the payload within the implement. The method further includes updating the locational value based on movement of the payload in the implement, the updated locational value being based at least on the pressure data, the position data, and predetermined physical parameters of the machine. The method further includes using the updated locational value to determine operational parameters of the machine.
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公开(公告)号：US20190218753A1
公开(公告)日：2019-07-18
申请号：US16358952
申请日：2019-03-20
发明人： Takaaki MORIMOTO
摘要： A shovel includes a lower traveling body, an upper turning body turnably mounted on the lower traveling body, a cab mounted on the upper turning body, an attachment including a working part configured to perform work, and a display device provided in the cab. The display device is configured to display information related to the time of the last adjustment of the information of the working part.
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公开(公告)号：US20190186100A1
公开(公告)日：2019-06-20
申请号：US16330875
申请日：2016-11-28
申请人： KOMATSU LTD.
IPC分类号： E02F3/43
摘要： A work vehicle includes a vehicular body, a work implement, a manipulation unit and a controller. The work implement has a boom pivotable with respect to the vehicular body, a dipper stick pivotable with respect to the boom, and a bucket pivotable with respect to the dipper stick. The manipulation unit is operated to output a manipulation command for the work implement. The controller controls the work implement in accordance with the manipulation command received from the manipulation unit. When in accordance with the manipulation command via the manipulation unit the bucket travels in a direction on the side of the back surface of the bucket with respect to the direction of the cutting edge of the bucket, the controller limits movement of the bucket in the direction in accordance with the manipulation command.
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公开(公告)号：US20180347154A1
公开(公告)日：2018-12-06
申请号：US15779866
申请日：2015-12-18
摘要： A system for determining a material entity to be removed from a pile by an implement of a material moving machine is provided. The system includes an arrangement for generating a current pile shape of the actual surface shape of the pile. Moreover, the system is adapted to determine a nominal pile shape of at least a portion of the pile. The nominal pile shape is determined on the basis of at least the current pile shape and information regarding the material type of the pile. Further the system is adapted to determine a surplus volume between the nominal pile shape and the current pile shape and the system is adapted to determine the material entity to be removed from the pile on the basis of the surplus volume.
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公开(公告)号：US20180179739A1
公开(公告)日：2018-06-28
申请号：US15643095
申请日：2017-07-06
申请人： Caterpillar Inc.
发明人： Jeffrey K. Berry , Qi Li , Dinny Jacob , Randall D. Pruitt
摘要： A machine includes a frame supported on at least a first axle and a second axle and a work implement that is hydraulically powered to be displaced with respect to the frame. A powertrain disposed on the machine generates a first force for propelling the machine with respect to the ground. The machine can include an electronic controller that communicates with the powertrain and a hydraulic sensor on the hydraulic actuator. The controller is configured to determine the weight distribution directed through the front and rear axles of the machine based in part on the dynamic positioning of the work implement.
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