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公开(公告)号：US20240279902A1
公开(公告)日：2024-08-22
申请号：US18569875
申请日：2022-04-21
Inventor： Ryota HASHIMOTO , Yasuhiko SHIMAZU , Sho OKIMOTO
Abstract: A construction machine is capable of preventing degradation in efficiency of excavation work while preventing an increase in excavation resistance in the excavation work. A controller of a construction machine determines an accommodation state of earth and sand accommodated in a bucket, and outputs a resistance reduction command signal that is a command signal for operating a work device such that the bucket is displaced in a resistance reduction direction that is a direction where excavation resistance acting on the bucket is capable of being reduced, in accordance with a result of determining the accommodation state.
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公开(公告)号：US12024851B2
公开(公告)日：2024-07-02
申请号：US17267061
申请日：2019-08-28
Applicant: KOMATSU LTD.
Inventor： Tomoki Konda , Kazuhiro Hatake , Takeshi Oi , Masanori Aizawa
CPC classification number: E02F3/439 , E02F3/32 , E02F9/2037 , E02F9/2041
Abstract: A loading machine includes a swing body and work equipment with a bucket. A control device of the loading machine includes a loading target specifying unit that specifies a position and shape of a loading target, an avoidance position specifying unit, and a movement processing unit. The avoidance position specifying unit specifies an interference avoidance position based on the position and shape of the loading target. The movement processing unit outputs an operation signal to drive only the swing body until the bucket reaches the interference avoidance position from a loading position above the loading target, to cause the bucket to move to the interference avoidance position. The movement processing unit outputs an operation signal to drive the swing body and the work equipment after the bucket has reached the interference avoidance position, to cause the bucket to move to an excavation position above an excavation target.
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公开(公告)号：US11913190B2
公开(公告)日：2024-02-27
申请号：US17271748
申请日：2019-12-13
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Kazuyuki Ito , Yoshikazu Urimoto
Abstract: Provided is a wheel loader capable of reducing erroneous determination of rear wheel lifting. The wheel loader 1 includes a controller 5 for determining a rear wheel lifting state where rear wheels 11B are lifted upwardly. The controller 5 is configured to, when a temporal change rate α of a bucket operation angle becomes a temporal change rate of a bucket operation angle necessary for a tilt operation of a bucket 23 during an excavation operation and a temporal change rate β of a vehicle body inclination angle estimated by the controller 5 becomes a temporal change rate of an obliquely upward inclination state of a rear vehicle body with respect to a front vehicle body, turn on a correlation flag indicating a correlation between an operation state of the bucket 23 and an inclination state of a vehicle body to determine a rear wheel lifting.
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公开(公告)号：US20240044102A1
公开(公告)日：2024-02-08
申请号：US18554652
申请日：2022-03-08
Applicant: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
Inventor： Ryunosuke MIYAZAKI , Masaki AKIYAMA , Sho FUJIWARA , Takayuki DOI
Abstract: A target locus of an attachment is determined while a calculation load for generating the target locus of the attachment is suppressed. A controller is configured to set a position of an arm distal end at a time when a contact detector detects contact of a bucket distal end with an excavation object at a start point of an arm distal end target locus. The controller is configured to receive information about a form of the arm distal end target locus in advance. The controller is configured to set a position for a finish point on the basis of an angle of a surface of the excavation object, an intersection angle between the arm distal end target locus and the surface of the excavation object, information about the form of the arm distal end target locus, and an offset amount about the finish point of the arm distal end target locus.
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公开(公告)号：US20240026656A1
公开(公告)日：2024-01-25
申请号：US18032285
申请日：2021-10-14
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Shuuichi MEGURIYA , Teruki IGARASHI , Akihiro NARAZAKI
CPC classification number: E02F9/262 , E02F3/439 , E02F9/2285
Abstract: A work machine includes a swing structure, a work device, a position sensor, a posture sensor and a controller that performs machine control on the basis of a target surface set on the basis of target shape data, the position information of the swing structure, and the information about the posture of the work machine. When the controller becomes unable to obtain the position information of the swing structure, the controller stores swing angle information of the swing structure, the swing angle information being sensed by the posture sensor at that time. The controller prohibits execution of the machine control when the swing structure is positioned outside a swing range; and permits the execution of the machine control when the swing structure is positioned inside the swing range and when the swing structure is positioned inside the swing range again after being positioned outside the swing range.
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Patent Agency Ranking
公开(公告)号：US11873621B2
公开(公告)日：2024-01-16
申请号：US17107059
申请日：2020-11-30
Applicant: Deere & Company
Inventor： Michael G. Kean
CPC classification number: E02F9/2041 , E02F9/205 , E02F3/439
Abstract: A system and method are provided for controlling movement of an implement for a self-propelled work vehicle, said implement comprising one or more components coupled to a main frame of the work vehicle. A linkage joint in defined in association with at least one implement component, wherein sensors are respectively associated with opposing sides of the linkage joint. Output signals from each sensor comprise sense elements which are fused in an independent coordinate frame associated at least in part with the respective linkage joint, wherein the independent coordinate frame is independent of a global navigation frame for the work vehicle. At least one joint characteristic (e.g., joint angle) is tracked based on at least a portion of the sense elements from the received output signals for each of the opposing sides of the respective linkage joint. Movement of implement components may optionally be controlled in view of the tracked joint characteristics.
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公开(公告)号：US20230332374A1
公开(公告)日：2023-10-19
申请号：US18026894
申请日：2021-10-07
Applicant: HITACHI, LTD.
Inventor： Shinji ISHIHARA , Ryu NARIKAWA , Akira KANAZAWA
CPC classification number: E02F3/434 , E02F3/437 , E02F3/439 , E02F9/2033 , E02F9/262
Abstract: Upon determining that the work apparatus will not enter a prohibited area set on the basis of output of a second position calculator of a carrier, the system computes, on the basis of the result of a prediction computation, first input of the dynamic characteristic with which a distal end of the work apparatus approaches a target position set on the basis of the output of the second position calculator. Upon determining that the work apparatus will enter the prohibited area, the system computes second input of the dynamic characteristic with which the distal end targets and approaches a position that is closer to the target position than the position of the distal end of the work apparatus at a position different from the target position outside the prohibited area, and the system computes control input for controlling the operation of the loader.
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公开(公告)号：US11753792B2
公开(公告)日：2023-09-12
申请号：US16644747
申请日：2018-08-13
Applicant: Komatsu Ltd.
Inventor： Tomoki Konda , Yusuke Saigo , Ryuta Okuwaki , Kazuhiro Hatake
CPC classification number: E02F3/435 , E02F3/32 , E02F3/437 , E02F3/439 , B60Y2200/412 , E02F9/2004 , E02F9/2296 , E02F9/264
Abstract: A movement processing unit is configured to generate operation signals of a work equipment and a swing body for moving a bucket to a loading point based on a start command of an automatic movement of the bucket. A stop processing unit is configured to brake a swing of the swing body based on a stop command of the automatic movement of the bucket, and is further configured to generate an operation signal for retreating the work equipment when a height of the bucket is lower than the loading point.
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公开(公告)号：US11668070B2
公开(公告)日：2023-06-06
申请号：US17137194
申请日：2020-12-29
Applicant: BUILT ROBOTICS INC.
Inventor： Noah Austen Ready-Campbell , Andrew Xiao Liang , Linus Page Chou , Edward Stephen Walker, Jr. , Christian John Wawrzonek , Cyrus McMann Ready-Campbell
IPC: E02F9/26 , E02F3/43 , E02F3/32 , E02F3/96 , G06T7/73 , G01C21/20 , G01N33/24 , G05D1/00 , G05D1/02 , G06T17/05 , G06V20/56 , E02F9/20
CPC classification number: E02F3/435 , E02F3/32 , E02F3/434 , E02F3/439 , E02F3/964 , E02F9/205 , E02F9/2029 , E02F9/262 , E02F9/265 , G01C21/20 , G01N33/24 , G05D1/0088 , G05D1/0219 , G05D1/0231 , G05D1/0274 , G06T7/74 , G06T17/05 , G06V20/56 , G05D2201/0202 , G06T2207/30248
Abstract: This description provides an autonomous or semi-autonomous excavation vehicle that is capable of navigating through a dig site and carrying out an excavation routine using a system of sensors physically mounted to the excavation vehicle. The sensors collect any one or more of spatial, imaging, measurement, and location data representing the status of the excavation vehicle and its surrounding environment. Based on the collected data, the excavation vehicle executes instructions to carry out an excavation routine. The excavation vehicle is also able to carry out numerous other tasks, such as checking the volume of excavated earth in an excavation tool and helping prepare a digital terrain model of the site as part of a process for creating the excavation routine.
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公开(公告)号：US20190078302A1
公开(公告)日：2019-03-14
申请号：US15757107
申请日：2017-07-13
Applicant: KOMATSU LTD.
Inventor： Takeo YAMADA , Ryosuke OKUI , Gousuke NAKASHIMA
CPC classification number: E02F9/265 , E02F3/283 , E02F3/32 , E02F3/43 , E02F3/439 , E02F9/2004 , E02F9/262 , E02F9/264
Abstract: A boom is attached to a body. A boom pin supports the boom while being swingable with respect to the body. A through-hole is made in the body. The through-hole is made such that a member (for example, the boom pin or a boom angle detector) that recognizes a position of the boom pin can be observed through the through-hole from a side of a hydraulic excavator.
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