公开(公告)号：US20200277757A1

公开(公告)日：2020-09-03

申请号：US16486915

申请日：2018-03-14

Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.

Inventor： Kazushige KUROKAMI ,  Hiroshi SAKAMOTO ,  Shigeki TOKITA

IPC: E02F9/26 ,  E02F9/24 ,  B60Q5/00

Abstract: A mode selecting device configured to select a work mode of a hydraulic excavator, a work determining section configured to determine whether work contents of the hydraulic excavator are work contents other than those of the selected work mode on the basis of a detection result of pilot pressure sensors, a minimum alarm region determining section configured to determine one of a plurality of minimum alarm regions preset on the periphery of the hydraulic excavator on the basis of a selection result of the mode selecting device and a determination result of the work determining section, and an alarm determining section configured to output an alarm signal to a buzzer when the relative position of an obstacle, the relative position being computed by an obstacle position calculating section, is inside an alarm region set so as to include the minimum alarm region determined by the minimum alarm region determining section.

公开(公告)号：US20230114481A1

公开(公告)日：2023-04-13

申请号：US17909506

申请日：2021-05-26

Applicant: Hitachi Construction Machinery Co., Ltd.

Inventor： Kazushige KUROKAMI ,  Takaaki ISHII ,  Shigeki TOKITA ,  Hiroshi SAKAMOTO ,  Yoshiyuki TSUCHIE

IPC: E02F9/24 ,  E02F9/26 ,  E02F9/20

Abstract: A work machine includes: an informing device that informs an operator; an input device for inputting predetermined information; a notification device that gives a notification to a worker around the work machine; a controller; and a communication device that communicates with a mobile terminal carried by the worker. The controller determines whether or not an approval request for requesting approval of entry into a movable range of the work machine transmitted from the mobile terminal when the worker around the work machine operates the mobile terminal has been received; inform, by using the informing device, that the approval request has been received when it is determined that the approval request has been received; determine whether or not approval operation of approving entry into the movable range has been performed on the input device; set an interpersonal communication level representing a degree of interpersonal communication between the operator and the worker depending on whether or not the approval request has been received and whether or not the approval operation has been performed; decide a mode of notification in accordance with the interpersonal communication level; and give a notification in the mode of notification by using the notification device.