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公开(公告)号：US20240133157A1
公开(公告)日：2024-04-25
申请号：US18279442
申请日：2022-03-14
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Shinjiro YAMAMOTO , Shinya IMURA , Koji SHIWAKU , Hiroki ISHII
CPC classification number: E02F9/205 , E02F9/2004 , E02F9/2203 , E02F9/24
Abstract: Provided is a work machine control system which enables a worker to perform a work more easily in the vicinity of a work machine executing a task automatically. A work machine control system comprises: a work machine that executes a task automatically as a work to be executed; and a task control device for controlling execution of the task. The work machine comprises a vehicle body control device and a hydraulic actuator used for executing the task, wherein the vehicle body control device comprises: a task content input section for receiving input of task content information; a movement control section for calculating a speed instruction of the hydraulic actuator based on the task content information; a receiving section for receiving task control information outputted from the task control device having a task control input section for receiving input of the task control information; and a task control section for controlling execution of the task based on the task control information.
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公开(公告)号：US20220333348A1
公开(公告)日：2022-10-20
申请号：US17641038
申请日：2021-03-18
Applicant: Hitachi Construction Machinery Co., Ltd.
Inventor： Kento KUMAGAI , Shinya IMURA , Yasutaka TSURUGA , Takaaki CHIBA , Hiroaki AMANO , Shinji NISHIKAWA , Akihiro NARAZAKI , Genroku SUGIYAMA , Shinjiro YAMAMOTO
Abstract: Provided is a work machine which can increase the operation speed of an actuator by a regeneration function while securing the position control accuracy of the actuator. A controller is configured to calculate a regeneration flow rate on the basis of an input amount of an operation lever and a target actuator flow rate, subtract the regeneration flow rate from the target actuator flow rate to calculate a target actuator supply flow rate, calculate a target flow rate control valve opening amount on the basis of the target actuator supply flow rate, calculate a target pump flow rate that is equal to or higher than a total target actuator supply flow rate, control a selector valve on the basis of the input amount of the operation lever, control a flow rate control valve according to the target flow rate control valve opening amount, and control a hydraulic pump according to the target pump flow rate.
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公开(公告)号：US20230304261A1
公开(公告)日：2023-09-28
申请号：US18024119
申请日：2022-02-28
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Hiroki ISHII , Shinya IMURA , Shinjiro YAMAMOTO , Koji SHIWAKU
CPC classification number: E02F9/205 , E02F9/265 , G07C5/02 , E02F9/2285
Abstract: A work machine includes: a work device; a posture sensor that senses posture information of the work device; a hydraulic actuator that drives the work device; and a controller configured to generate operation plan information on the basis of task information necessary for automatic control, the task information being obtained from an external system, and perform automatic control of the hydraulic actuator on the basis of the operation plan information and a sensing result of the posture sensor. The controller outputs the operation plan information to the external system. The controller does not perform the automatic control when an approval signal indicating that the operation plan information is approved is not input from the external system. The controller performs the automatic control when the approval signal is input from the external system.
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公开(公告)号：US20220282459A1
公开(公告)日：2022-09-08
申请号：US17632362
申请日：2020-03-25
Applicant: Hitachi Construction Machinery Co., Ltd.
Inventor： Takaaki CHIBA , Shinya IMURA , Shinjiro YAMAMOTO , Masamichi ITO , Koji SHIWAKU
Abstract: Provided is an operation assistance system for a work machine having both operation assistance and work assistance functions, capable of reducing the inconvenience to an operator or the like of setting an area of the operation assistance function and an area of the work assistance function, and preventing a collision of the work machine with an object in a work area. The operation assistance system for a work machine has the operation assistance function of stopping a hydraulic excavator (work machine) 1 when an object is detected in a stop area 40 set in advance and the work assistance function of preventing the hydraulic excavator (work machine) 1 from going out of a work area 51 set in advance. When both of the work assistance function and the operation assistance function can be switched between enabled and disabled states, and when the work assistance function is in an enabled state and the work area 51 is set, the operation assistance system enables the operation assistance function and sets the work area 51 as the stop area 40.
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公开(公告)号：US20230323630A1
公开(公告)日：2023-10-12
申请号：US18023513
申请日：2022-02-18
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Shinya KASAI , Masamichi ITO , Shinjiro YAMAMOTO
CPC classification number: E02F9/205 , G05D2201/0202 , G05D1/0038
Abstract: Provided is a remote operation device capable of remotely operating efficiently and safely a work machine that is operated from a remote location, even when a communication delay occurs. The remote operation device includes a communication control section 222 that receives a camera video image of a work site captured by a vehicle-mounted camera 91 and vehicle body information of the work machine (hydraulic shovel) 1, a predicted trajectory computing section 220 that computes a predicted trajectory of the work machine (hydraulic shovel) 1 from the vehicle body information and outputs predicted trajectory data to be displayed as a video image on a display device 202, and a display control section 221 that causes the display device 202 to display the camera video image and the video image of the predicted trajectory on the same screen (simultaneously).
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Patent Agency Ranking
公开(公告)号：US20230243126A1
公开(公告)日：2023-08-03
申请号：US18023910
申请日：2020-09-01
Applicant: Hitachi Construction Machinery Co., Ltd.
Inventor： Shinjiro YAMAMOTO , Shinya IMURA
Abstract: Provided is a control system for a work machine that allows a worker in the operation around the work machine to safely approach the work machine. The control system for a work machine includes: a work machine 1 including a work implement 7, a lock mechanism 14 for the work implement 7, a lock controller 13 that controls the lock mechanism 14, and a communication device 20; and a communication terminal 30 that is able to communicate with the communication device 20 of the work machine 1. The lock controller 13 controls the lock mechanism 14 so as not to be released from a locked state in a case receiving a lock demand signal from the communication terminal 30, and controls the lock mechanism 14 so as to be released from the locked state in a case receiving a lock demand cancellation signal from the communication terminal 30.
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公开(公告)号：US20230235539A1
公开(公告)日：2023-07-27
申请号：US18023460
申请日：2022-01-06
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Yuho SAITO , Takaaki CHIBA , Shinjiro YAMAMOTO , Shinya IMURA
Abstract: An overhead-view image of a work site is presented to an operator of a work machine even when the number of imaging devices at a construction site is lacking. The present disclosure provides an information presentation device for generating and outputting a terrain image relating to a construction site. The information presentation device includes a storage device that stores a program for performing a predetermined imaging process on the terrain image, and a processor for reading the program from the storage device and generating the terrain image. The processor performs: a process of using an image of the construction site acquired by at least one imaging device installed at a construction site, to acquire a first overhead-view image representing a current terrain of the construction site as viewed from above; a process of acquiring a second overhead-view image acquired by a method other than capturing by the imaging device installed at the construction site, and representing an original terrain of the construction site as viewed from above; and an image synthesis process of superimposing the first overhead-view image and the second overhead-view image to generate a first synthesized overhead-view image.
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公开(公告)号：US20230167622A1
公开(公告)日：2023-06-01
申请号：US17910953
申请日：2021-03-31
Applicant: Hitachi Construction Machinery Co., Ltd.
Inventor： Kento KUMAGAI , Shinya IMURA , Yasutaka TSURUGA , Takaaki CHIBA , Hiroaki AMANO , Shinji NISHIKAWA , Akihiro NARAZAKI , Genroku SUGIYAMA , Shinjiro YAMAMOTO
IPC: E02F3/43 , E02F9/22 , F15B11/024 , F15B11/042 , F15B11/044 , F15B11/08 , F15B11/16
CPC classification number: E02F3/435 , E02F9/2203 , E02F9/2217 , E02F9/2235 , E02F9/2242 , E02F9/2282 , E02F9/2292 , E02F9/2296 , F15B11/08 , F15B11/16 , F15B11/024 , F15B11/042 , F15B11/044 , F15B2211/46 , F15B2211/327 , F15B2211/329 , F15B2211/426 , F15B2211/455 , F15B2211/3058 , F15B2211/3116 , F15B2211/6306 , F15B2211/6309 , F15B2211/6336 , F15B2211/6346 , F15B2211/6355 , F15B2211/6652 , F15B2211/6654 , F15B2211/20553 , F15B2211/20576 , F15B2211/30505 , F15B2211/30595
Abstract: An object of the present invention is to provide a work machine that can increase the operation speed of an actuator by a regenerating function while ensuring accuracy of position control of the actuator. For this purpose, a controller computes a target actuator supply flow rate by subtracting a regeneration flow rate from a target actuator flow rate, computes a target flow control valve opening amount on the basis of the target actuator supply flow rate, computes a target pump flow rate equal to or more than the sum of a plurality of the target actuator supply flow rates, controls flow control valves according to the target flow control valve opening amount, and controls a hydraulic pump according to the target pump flow rate.
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公开(公告)号：US20220267998A1
公开(公告)日：2022-08-25
申请号：US17623637
申请日：2020-06-11
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Shinji NISHIKAWA , Koji SHIWAKU , Shinjiro YAMAMOTO , Ryota KAMEOKA , Akihiro NARAZAKI
Abstract: There is provided a construction machine that achieves both safety and operability by lowering the possibility of an accident due to contact between the construction machine and a worker in the periphery of a vehicle body while securing operability in situations where an object required for work is present in the periphery. A controller has a normal mode as a control mode for making the operation limiting control effective and a temporary cancelation mode as a control mode for temporarily canceling the operation limiting control. The controller shifts to the temporary cancelation mode in response to operation of the control canceling device while in the normal mode. The controller shifts back to the normal mode in a case where a predetermined condition not responsive to operation of the control canceling device is satisfied while in the temporary cancelation mode.
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公开(公告)号：US20250163678A1
公开(公告)日：2025-05-22
申请号：US18842448
申请日：2022-03-30
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Masamichi ITO , Shinjiro YAMAMOTO , Yuichi OGAWA
IPC: E02F9/20
Abstract: Provided is an automated control system for a work machine capable of suppressing deterioration of the workability in automated work caused by instability of the ground for the work machine. An automated traveling control section 703 performs automated traveling of the work machine; an automated work control section (automated excavation control section 704) performs automated work of the work machine; and a stability determination section 702 determines stability of ground for the work machine. When execution of automated traveling control by the automated traveling control section 703 is to be followed by execution of automated work control by the automated work control section (automated excavation control section 704), stability determination by the stability determination section 702 is executed before executing the automated work control, and automated control of the work machine is executed on the basis of a determination result obtained by the stability determination section 702.
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