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

IPC: E02F9/20 ,  G05D1/00

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).

公开(公告)号：US20240011251A1

公开(公告)日：2024-01-11

申请号：US18037599

申请日：2021-11-15

Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.

Inventor： Takaaki CHIBA ,  Masamichi ITO ,  Koji SHIWAKU ,  Shinya KASAI ,  Morizo HENMI

IPC: E02F9/26

CPC classification number: E02F9/262 ,  E02F9/265 ,  E02F3/435

Abstract: Provided is a work machine including a controller configured to perform area restriction control for preventing a vehicle body from deviating from a work area set in a construction area. In this work machine, it is possible to easily set an area for which operation of the work machine is to be restricted in an actual space to a desired position, and to avoid displacement of the area for which the work machine is to be actually controlled from the set area. The work machine includes a controller configured to perform area restriction control for restricting operation of a vehicle body so as to prevent the vehicle body from deviating from a work area set in a construction area. The controller sets at least a part of the work area based on design data representing a final intended shape of a construction target in the construction area.

公开(公告)号：US20230323631A1

公开(公告)日：2023-10-12

申请号：US18024695

申请日：2022-02-01

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Masamichi ITO ,  Koji SHIWAKU ,  Shinya KASAI

IPC: E02F9/20 ,  E02F9/26

CPC classification number: E02F9/205 ,  E02F9/268 ,  E02F9/24

Abstract: Provided is a work machine including a front work device, the work machine including a state amount sensor that senses a state amount relating to an action state of the work device and a controller that controls an action of the work machine on the basis of an operation signal transmitted from a remote device by radio communication. The controller assesses a communication status of the radio communication, and, when restricting the action of the work machine on the basis of a result of the assessment, eases the restriction on the action of the work machine, depending on a sensing result from the state amount sensor. As a result, it is possible to appropriately restrict action on the basis of a communication status, while suppressing worsening of workability.