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公开(公告)号：US20240253699A1
公开(公告)日：2024-08-01
申请号：US18560455
申请日：2022-06-15
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takashi MAEDA , Yoshihide NAKAE
Abstract: A work machine includes a vehicle body, a steering control wheel, a first actuator, a second actuator, a steering angle sensor, a leaning angle sensor, and a controller. The steering control wheel is supported by the vehicle body. The first actuator changes a steering angle of the steering control wheel. The second actuator changes a leaning angle of the steering control wheel. The steering angle sensor outputs a first angle signal indicative of the steering angle. The leaning angle sensor outputs a second angle signal indicative of the leaning angle. The controller acquires the first angle signal and the second angle signal, acquires the steering angle based on the first angle signal, acquires the leaning angle based on the second angle signal, acquires a target leaning angle corresponding to the steering angle, and controls the second actuator so that the leaning angle becomes the target leaning angle.
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公开(公告)号：US20240247466A1
公开(公告)日：2024-07-25
申请号：US18560484
申请日：2022-06-15
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takashi MAEDA , Yoshihide NAKAE
CPC classification number: E02F9/225 , E02F9/0841 , E02F9/2203 , E02F9/2285 , E02F9/2292
Abstract: A work machine includes a vehicle body, a steering control wheel, an actuator, and a controller. The vehicle body includes a rear frame and a front frame coupled to the rear frame so as to turn with respect to the rear frame. The steering control wheel is supported by the front frame. The actuator changes a steering angle of the steering control wheel. The controller controls the actuator. The controller determines a target direction in which the vehicle body travels, acquires an articulate angle of the front frame with respect to the rear frame, and sets the steering angle so that the vehicle body moves in the target direction by controlling the actuator in accordance with the articulate angle.
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公开(公告)号：US20240337089A1
公开(公告)日：2024-10-10
申请号：US18681971
申请日：2022-08-29
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Yoshihide NAKAE , Takashi MAEDA
CPC classification number: E02F3/847 , E02F9/2004 , E02F9/2041 , E02F9/2203
Abstract: A controller acquires vehicle body posture data. The controller acquires work implement posture data. The controller calculates a height of a work implement in a gravity direction from a reference point of a vehicle body based on the vehicle body posture data and the work implement posture data. The controller controls an actuator so that the height of the work implement in the gravity direction is maintained even when a posture of the vehicle body changes.
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公开(公告)号：US20240301657A1
公开(公告)日：2024-09-12
申请号：US18284163
申请日：2022-01-19
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takeshi KAMIMAE , Yoshihide NAKAE , Youichirou KIMURA , Takashi MAEDA
CPC classification number: E02F9/2045 , E02F9/26
Abstract: A travel system for a work machine is provided that can facilitate recording of courses actually traveled by the work machine. A travel system for a motor grader includes a traveling apparatus and a controller. The traveling apparatus prompts the motor grader to travel. The controller prompts automatic recording of an actually traveled course which is a course actually traveled by the motor grader.
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Patent Agency Ranking
公开(公告)号：US20240218634A1
公开(公告)日：2024-07-04
申请号：US18558219
申请日：2022-05-18
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takashi MAEDA , Yoshihide NAKAE
CPC classification number: E02F9/225 , B62D1/22 , B62D5/091 , E02F9/2004 , E02F9/2203 , E02F9/2285 , E02F9/2292
Abstract: A work machine includes a vehicle body, a traveling wheel supported by the vehicle body, an actuator to change a steering angle of the traveling wheel from a neutral angle to left or right, a first steering member, and a controller. The first steering member is operable between a left steering range, a right steering range, and a neutral range. The controller controls the actuator so that the steering angle of the traveling wheel is changed to the left and right at speeds that correspond to operating amounts of the first steering member when the first steering member is positioned in the left and right steering ranges, respectively. The controller controls the actuator so that the steering angle returns to the neutral angle when the first steering member is positioned in the neutral range.
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公开(公告)号：US20240218633A1
公开(公告)日：2024-07-04
申请号：US18558238
申请日：2022-05-18
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takashi MAEDA , Yoshihide NAKAE , Yasuhisa ASANO , Takeo MURATA
CPC classification number: E02F9/2087 , E02F3/7663
Abstract: A work machine includes a vehicle body, traveling wheel, steering member, actuator, operation sensor, steering angle sensor, direction sensor, and a controller. The steering member is operable between left, right, and neutral steering ranges. The actuator sets a steering angle of the traveling wheel to a neutral angle when the steering member is in the neutral range, and changes the steering angle to left or right in response to operation of the steering member. The controller acquires operation, angle, and direction signals from the sensors. The controller determines whether the steering angle has returned to the neutral angle when the steering member has been operated from the left or right steering ranges to the neutral range. The controller determines the traveling direction when the steering angle has returned to the neutral angle, as a target direction. The controller controls the actuator to hold the traveling direction in the target direction.
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公开(公告)号：US20240151001A1
公开(公告)日：2024-05-09
申请号：US18284150
申请日：2022-01-19
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takashi MAEDA , Yoshihide NAKAE , Youichirou KIMURA
CPC classification number: E02F9/2087 , E02F3/76
Abstract: A steering mechanism is used to navigate the direction of travel of a motor grader. A directional correction input device is manipulatable by an operator. A controller, during automatic control of the steering operation by the steering mechanism, controls the steering mechanism in a manner that the direction of travel is adjustable leftward or rightward through a certain angle based on an operation command inputted through the directional correction input device.
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公开(公告)号：US20240352706A1
公开(公告)日：2024-10-24
申请号：US18553257
申请日：2022-05-10
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Yoshihide NAKAE , Takashi MAEDA
CPC classification number: E02F3/844 , E02F3/764 , E02F9/2004 , E02F3/7645 , E02F3/765 , E02F9/2203
Abstract: A work machine includes a vehicle body, a work implement movably connected to the vehicle body, a plurality of actuators that are connected to the work implement and change an orientation of the work implement with respect to the vehicle body, an operating device that is operable to change the orientation of the work implement, a sensor that detects the orientation of the work implement, and a controller. The controller acquires a current orientation of the work implement, determines a target orientation of the work implement corresponding to an operation of the operating device, determines respective target stroke lengths of the plurality of actuators so that the work implement assumes the target orientation from the current orientation with a combination of stroke motions of the plurality of actuators, and controls the plurality of actuators based on the target stroke lengths.
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公开(公告)号：US20240229419A1
公开(公告)日：2024-07-11
申请号：US18558284
申请日：2022-05-18
Applicant: KOMATSU LTD.
Inventor： Takuya SONODA , Takashi MAEDA , Yoshihide NAKAE , Yasuhisa ASANO , Takeo MURATA
CPC classification number: E02F9/2087 , E02F3/76
Abstract: A work machine including a vehicle body, a traveling wheel, first and second steering members, an actuator, first and second operation sensors that output operation signals indicative of operation of the first and second steering members, and a controller. The controller acquires the first and second operation signals. The controller determines whether or not the first steering member is being operated, and whether the first steering member was operated last. The controller performs an automatic control of the actuator to set the steering angle to a target angle upon determining that the first steering member is not being operated and the first steering member was operated last. The controller does not perform the automatic control upon determining that the second steering member was operated last even if the first steering member is not being operated.
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